TW201722558A - Roll crusher of cooler device - Google Patents

Abstract

A roll crusher of a cooler device is provided which can level out changes over time in the load on the rolls. This roll crusher 15 of a cooler device 1 is provided with multiple load reducing rolls 15a, 15b. The load reducing rolls 15a, 15b are arranged in parallel to a conveyance direction with a gap S1 therebetween and are rotated by rotation units about rotation axes L1, L2, so as to crush cement. The load reducing rolls 15a, 15b have multiple crushing rings 22, 23, 32, 33, and on the outer peripheral surface of the crushing rings 22, 23, 32, 33, crushing teeth 24, 27, 34, 35 are formed at an equal pitch p1, p2, and the crushing teeth 27, 35 are arranged offset in the circumferential direction with respect to adjacent crushing teeth 24, 34.

Description

Roller crusher for cooling unit

The present invention relates to a roll crusher for a cooling device that performs cooling while transporting a high-temperature granular carrier, such as granular cement clinker.

In the cement plant, a cooling device that transports the high-temperature cement clinker produced by the preheating, the calcination, and the sintering while being cooled in the conveyance direction is provided, for example, the cooling device of Patent Document 1. The cooling device is conveyed while cooling the clinker in the cooling portion, and discharges the clinker from the discharge end portion of the cooling portion. Further, the cooling device is provided with four rollers extending in a direction perpendicular to the conveyance direction in the vicinity of the discharge end portion. The three rollers on the discharge end side among the four rollers perform forward rotation (i.e., rotation outputted to the conveyance direction). Further, the fourth reverse roller is rotated in the reverse direction, and the clinker is sandwiched between the reverse roller and the roller adjacent thereto to perform compression fracture.

Prior art literature:

Patent literature:

Patent Document 1: Japanese Laid-Open Patent Publication No. SHO 61-295264.

With regard to the four rolls described in Patent Document 1, in order to further effectively clink the clinker, it is conceivable to form a plurality of teeth on the outer circumferential surfaces of the four rolls, and to rotate the rolls to utilize the pair of teeth from the discharge end. The clinker discharged from the part is broken. In the case of such a structure, the load acts on the rolls when the clinker is crushed by the teeth. When the crushing by the teeth is simultaneously performed at a plurality of positions of the rolls, the load of the rolls becomes maximum only for a certain period of time. Therefore, there is a need for a rotating machine that can rotate a roller even if a large load is generated, that is, a rotating unit such as a motor that can generate a large driving force. For a rotating unit capable of generating such a large driving force, its outer shape is large and power consumption is large. Therefore, in order to achieve downsizing of the rotating unit and reduction in power consumption, it is expected that the load of the suppressing roller is maximized only for a specific period of time.

Accordingly, it is an object of the present invention to provide a roll crusher of a cooling apparatus capable of averaging changes in the load of a roll over time.

The roll crusher of the cooling device of the present invention is a roll crusher for crushing the particulate conveyed material in a cooling device that performs cooling while transporting the particulate conveyed material; and is arranged in parallel in the conveying direction with a gap therebetween And a plurality of rollers that are rotated by the rotation unit about the axis orthogonal to the conveying direction and parallel to each other and that crush the granular conveyed object; at least one of the plurality of rollers is a load reducing roller; The load reducing roller has a plurality of crushing rings; each of the plurality of crushing rings has a plurality of crushing teeth disposed on the outer peripheral surface at equal intervals in the circumferential direction; and the plurality of the plurality of crushing rings The plurality of crushing teeth of the crushing teeth and the adjacent crushing ring are arranged to be shifted in the circumferential direction.

According to the invention, the plurality of crushing teeth of the at least one crushing ring are arranged offset in the circumferential direction. Therefore, when the roller is rotated, the timing at which the load is increased can be shifted for the load at the time of crushing of the crushing ring and the other crushing ring which are respectively disposed in the staggered arrangement. With this, The time-dependent change in the load acting on the load reducing roller is averaged, and as a result, the change in the load of the rotating unit with time can be averaged.

In the above invention, the plurality of crushing teeth may be disposed on the outer circumferential surface of the crushing ring at a predetermined pitch, and the plurality of crushing teeth of the crushing ring adjacent to each other in the axial direction extending in the axial direction. The arrangement is performed one by one in the form of a pitch of 1/n times in the circumferential direction, wherein n is an integer of 2 or more.

According to the above configuration, the crushing teeth are arranged in the axial direction to form a tooth row, and the tooth row is formed to be twisted in the circumferential direction. Thereby, when the load reduction roller is rotated, the agglomerated particulate conveyance which cannot be crushed and remains on the roller can be conveyed to the axial direction side. By conveying the agglomerated particulate conveyances in this manner, the remaining agglomerated particulate conveyed objects collide with other agglomerated particulate conveyances, whereby the pulverization can be performed. Moreover, by conveying the particulate conveyance, the particulate conveyance remaining on the roll can be guided into the gap which can be bitten well. With this, even a granular carrier having a large particle size can be bitten well.

In the above invention, the load reducing roller may have a shaft extending in the axial direction and rotating by the rotating unit about the axis; the shaft extending in the axial direction and having a mutual card on an outer circumferential surface thereof And one of the engaging and retaining grooves; the plurality of crushing rings have the other of the engaging piece and the engaged groove on the inner circumferential surface, and the engaging piece and the aforementioned The engaging groove is engaged to be externally mounted on the shaft in a form in which the relative displacement cannot occur in the circumferential direction; the plurality of crushing rings include a first crushing ring and a second crushing ring; the first crushing ring has the foregoing a first reference tooth of one of the plurality of crushing teeth; the second crushing ring has a second reference tooth as one of the plurality of crushing teeth; the first reference tooth is located at a center of the first breaking ring and the card Blend And a connecting line at a center of the other of the engagement grooves; wherein the second reference tooth and the first reference tooth are arranged in a 360/(n×N) degree in the circumferential direction, wherein N is a second The number of teeth in the broken ring.

According to the above configuration, if the second crushing ring is reversed, the crushing ring of the crushing teeth (i.e., the crushing tooth) can be disposed as a broken tooth of the first crushing ring by 360 × (n-1) / (n × N) degrees. It is used by shifting the (n-1)/n times pitched crushing ring one by one to the side in the circumferential direction. Therefore, the type of the mold used for manufacturing the crushing ring is smaller than the type of the crushing ring to be used, so that the manufacturing cost can be reduced.

In the above invention, the plurality of crushing teeth may include: the crushing teeth having a first height, that is, high teeth; and the crushing teeth having a second height lower than the first height, that is, low teeth.

According to the above configuration, by forming the low teeth, it is possible to sandwich and crush the large-sized granular conveyed articles that cannot be gripped by the high teeth and that cannot be broken by the low teeth. Thereby, it is possible to suppress the particulate conveyance which remains on the roll and which has a large block which cannot be bitten.

In the above invention, the outer peripheral surface of the load reducing roller may have a plurality of high-teeth formation portions in which the plurality of high teeth are arranged in the circumferential direction, and a plurality of low teeth in which the plurality of low teeth are arranged in the circumferential direction. In the formation portion, the high tooth formation portion and the low tooth formation portion are arranged in a zigzag shape.

According to the above configuration, the low teeth and the high teeth between the rolls are alternately arranged in the axial direction at the time of the crushing, so that the change in the load acting on the load reducing rolls can be averaged over time, and as a result, the load of the rotating unit can be made. Averaged over time.

In the above invention, the load reducing roller may have the axial extension a shaft extending in the axial direction of the extension and rotating by the rotating unit about the axis; the plurality of crushing teeth are disposed on the outer circumferential surface of the crushing ring at a predetermined pitch and at equal intervals, and at the aforementioned axis The plurality of crushing teeth of the crushing ring adjacent to each other in the direction are arranged one by one in the circumferential direction by 1/2 times the pitch; the shaft extends in the axial direction and has a card that is engaged with each other on the outer peripheral surface. And a plurality of the engaging grooves; the plurality of crushing rings have the other of the engaging piece and the engaged groove on the inner circumferential surface, and the engaging piece and the engaged groove Engaging, so as to be externally mounted on the shaft in such a manner that relative displacement cannot occur in the circumferential direction; and having at least two of the high-tooth forming portions and the arrangement of at least two of the high teeth on the outer peripheral surface of the crushing ring The aforementioned low tooth forming portion of the above-mentioned low teeth; the plurality of crushing rings include a first crushing ring and a second crushing ring; the first crushing ring has the plurality of broken a first reference tooth of one of the teeth, and a line connecting the center of the first crushing ring and the center of the engaging piece and the other of the engaging grooves, on the outer circumferential surface of the first breaking ring The high tooth forming portion and the low tooth forming portion are alternately arranged in the circumferential direction with respect to the first reference tooth; the second crushing ring has one of the plurality of crushing teeth, and the first The second reference tooth in which the reference tooth is shifted by 1/2 times the pitch in the circumferential direction, and the outer peripheral surface of the second crush ring is alternately arranged in the circumferential direction with respect to the second reference tooth The high tooth forming portion and the low tooth forming portion are formed; and the first crushing ring and the second crushing ring have a rotational symmetry about the respective axes.

According to the above configuration, the first crushing ring and the second crushing ring are externally mounted on the shaft in a standard posture, and the first crushing ring and the second crushing ring are externally mounted on the shaft in an inverted posture in which the turning is performed, And repeating the process to make the broken teeth one by one and 1/2 times the pitch The high-teeth region and the aforementioned low-tooth region are load-reducing rollers arranged in a zigzag shape. Therefore, although four kinds of crushing rings are used at the time of manufacture, the kinds of molds used in manufacturing the crushing rings can be suppressed to two types, so that the manufacturing cost can be reduced.

In the above invention, the plurality of rollers may have at least two or more load reducing rollers adjacent to each other; and the adjacent load reducing rollers each have a different amount of shifting of the plurality of crushing teeth in the circumferential direction. The aforementioned broken ring.

According to the above configuration, the time change of the load acting on the load reducing roller can be further averaged, and as a result, the change in the load of the rotating unit with time can be further averaged.

According to the present invention, the change in the load of the rolls can be averaged over time.

1‧‧‧Cooling device

15‧‧‧ Roller Crusher

15a‧‧‧First roll

15b‧‧‧second roll

15c‧‧‧third roll

15d‧‧‧fourth roller

17‧‧‧Rotating unit

21‧‧‧first axis

21a‧‧‧ key

22‧‧‧First Breaking Ring

22a‧‧‧ keyway

23‧‧‧Second Breaking Ring

23a‧‧ ‧ keyway

24‧‧‧ broken teeth

24a‧‧‧High teeth

24c‧‧‧low teeth

24d‧‧‧ first reference tooth

25‧‧‧The first high tooth formation site

26‧‧‧First low tooth formation site

27‧‧‧ broken teeth

27a‧‧‧High teeth

27c‧‧‧low teeth

27e‧‧‧second reference tooth

28‧‧‧Second high tooth formation site

29‧‧‧Second low tooth formation site

30H‧‧‧High tooth formation site

30L‧‧‧low tooth formation

31‧‧‧second axis

31a‧‧‧ key

32‧‧‧First Breaking Ring

32a‧‧ ‧ keyway

33‧‧‧Second Breaking Ring

33a‧‧ ‧ keyway

34‧‧‧Fractured teeth

34a‧‧‧First reference tooth

35‧‧‧Fractured teeth

35a‧‧‧second reference tooth

36‧‧‧ teeth

1 is a schematic view showing a configuration of a cement plant equipped with a cooling device according to the present invention; FIG. 2 is a perspective view showing a schematic configuration of the cooling device of FIG. 1; and FIG. 3 is a roller type showing the cooling device of FIG. Figure 4 is a front elevational view showing a first crushing ring of the first roller of Figure 3; Figure 5 is a front elevational view showing a portion of the first crushing ring of the first roller of Figure 3; A front view showing a second crushing ring of the first roller in Fig. 3; Fig. 7 is a front elevational view showing a portion of the second crushing ring of the first roller of Fig. 4; and Fig. 8 is a partial view of the first roller of Fig. 3. Enlarged and illustrated enlarged perspective view; FIG. 9 is a front elevational view showing the first crush ring of the second roller of FIG. 3; Figure 10 is a front elevational view showing a second crushing ring of the second roller of Figure 3; Figure 11 is a front elevational view showing a portion of the second crushing ring of the second roller of Figure 3; An enlarged perspective view of the two rolls partially enlarged and shown.

Hereinafter, a cooling device 1 according to an embodiment of the present invention will be described with reference to the drawings. In addition, the concept of the direction used in the following description is used for convenience of explanation, and is not intended to limit the direction of the structure of the invention or the like to the direction. Further, the cooling device 1 described above is only one embodiment of the present invention. Therefore, the present invention is not limited to the embodiments, and may be added, deleted, or changed without departing from the spirit of the invention.

[First Embodiment]

<cement equipment>

The cement is produced by a raw material pulverizing step of pulverizing a cement raw material containing limestone, clay, vermiculite, iron, etc.; a sintering step of sintering the pulverized cement raw material; and a final processing step as a final step, The three steps are carried out in a cement plant. In the sintering step of one of the three steps, the pulverized cement raw material is sintered and cooled to form a granular cement clinker. The structure shown in Fig. 1 shows a sintering apparatus 3 of a cement plant which is part of a sintering step in cement manufacturing. The sintering apparatus 3 preheats, burns, and sinters the pulverized cement raw material in the raw material pulverization step, and cools the particulate cement clinker which is sintered to become high temperature.

The portion in which the sintering step is performed will be described in further detail. The sintering apparatus 3 is provided with a preheater 4, and the preheater 4 is composed of a plurality of cyclones 5. The cyclones 5 are arranged in a plurality of stages in the up and down direction, and the exhaust gas 5 is blown up to the cyclone 5 (refer to In the dotted line arrow of Fig. 1, the input cement raw material is separated by a swirling flow, and is supplied to the cyclone 5 of the lower stage (refer to the solid arrow in Fig. 1). The cyclone 5 located in the uppermost stage of the lowermost stage inputs the cement raw material to the keratin furnace 6. The keratin furnace 6 has a burner, and the reaction of the carbon dioxide gas in the cement raw material (i.e., the sinter reaction) is separated by the heat generated by the burner and the exhaust heat described below. The cement raw material which is accelerated by the sinter-burning reaction in the sinter furnace 6 is introduced into the cyclone 5 of the lowermost stage as follows, and the cement raw material in the cyclone 5 is supplied to the rotary kiln 7.

The rotary furnace 7 is formed in a cylindrical shape that is long in a horizontal direction of several tens of meters or more. The rotary kiln 7 is disposed in a form that is slightly inclined downward from the inlet on the side of the cyclone 5 to the outlet on the front end side. Therefore, the cement raw material located on the inlet side is conveyed to the outlet side by rotating the rotary furnace 7 around the axis. Further, a combustion device 8 is provided at the outlet of the rotary furnace 7. The combustion device 8 forms a high temperature flame to sinter the cement raw material.

Further, the combustion device 8 injects the high-temperature combustion gas toward the inlet side, and the combustion gas injected from the combustion device 8 flows into the rotary furnace 7 to the inlet side while sintering the cement raw material. The combustion gas is turned into a jet flow from the lower end of the sinter furnace 6 as a high-temperature exhaust gas, and is blown upward in the sinter furnace 6 (see a broken line arrow in FIG. 1), and the cement raw material introduced into the sinter furnace 6 can be blown upward. . The cement raw material is heated to about 900 ° C by heating the exhaust gas and the burner. Further, the cement raw material blown upward flows into the lowermost cyclone 5 together with the exhaust gas, and the exhaust gas and the cement raw material flowing therein are separated. The separated cement raw material is supplied to the rotary furnace 7, and the exhaust gas blows the cyclone 5 of the upper section. The exhaust gas blown upward is heat-exchanged with the cement raw materials put into the respective cyclones 5 to heat the cement raw material, and is again separated from the cement raw material. The separated exhaust gas is further raised to the cyclone 5 above it to repeat the heat exchange. Then, from the top of the whirlwind The device 5 is discharged to the atmosphere.

In the sintering apparatus 3 configured as described above, the cement raw material is supplied from the vicinity of the uppermost cyclone 5, and after the heat exchange with the exhaust gas, the cyclone 5 is lowered to the uppermost stage of the lowermost stage, and then It is put into the furnace 6. In the sinter furnace 6, the cement raw material is subjected to a burn by a burner and a high-temperature gas, and then the cement raw material is introduced into the lowermost cyclone 5, where it is separated from the exhaust gas, and then supplied to the rotary kiln 7. The supplied cement raw material is transported to the outlet side while being burned in the rotary furnace 7. After preheating, firing and sintering, it is formed into cement clinker. A cooling device 1 is provided at the outlet of the rotary furnace 7, and the formed cement clinker is discharged from the outlet of the rotary furnace 7 to the cooling device 1.

<Cooling device>

The cooling device 1 cools the cement clinker (high-temperature granular carrier) discharged from the rotary furnace 7 while being conveyed in a predetermined conveyance direction, and a fixed inclined grate 11 is disposed immediately below the outlet of the rotary furnace 7. The fixed inclined weir 11 is inclined downward from the outlet side of the rotary furnace 7 toward the conveyance direction, and the granular cement clinker discharged from the outlet of the rotary furnace 7 is slid down in the conveyance direction so as to roll on the fixed inclined weir 11. A plurality of cooling grid rows 13 are provided at the front end portion of the fixed inclined weir 11 in the conveying direction, and the cement clinker is deposited on the plurality of cooling grid rows 13 to form the mature layer 14. The cooling grid row 13 is a structure extending in the conveying direction, and is juxtaposed in a lateral direction orthogonal to the conveying direction (hereinafter referred to as "orthogonal direction") adjacent to each other, and is covered thereon. The clinker layer 14 is loaded in the form of all of the plurality of cooling grid rows 13 (see the two-dot chain line in FIG. 2).

The cooling grid array 13 configured as described above has a carriage (not shown) and is movable in the conveyance direction side and the other side, and the cooling grid array 13 is moved and the cooling grid array 13 is cooled. The cessation is repeated to carry the granular cement clinker. As a specific conveyance method, for example, there is a method of advancing all of the cooling grid arrays 13 arranged in the orthogonal direction and then retracting the adjacent cooling grid arrays 13 a plurality of times, and extending in the orthogonal direction. The crossbar is provided on the upper portion of the cooling grid row 13, and the method of moving the crossbar in the conveying direction to convey the clinker layer 14 in the conveying direction. Moreover, the structure and method of conveying the clinker layer 14 in the conveyance direction are not limited to the above-described structure and method, and may be any structure and method capable of conveying the clinker layer 14 in the conveyance direction. The cement clinker thus conveyed falls from the front end of the cooling grid array 13 to the lower side, and a roll crusher 15 is disposed directly below the front end of the cooling grid array 13.

As shown in FIG. 3, the roll crusher 15 is a device for further breaking the cement clinker dropped from the front end of the cooling grid array 13 into fine particles. The roll crusher 15 is composed of four load reducing rolls (hereinafter simply referred to as "rollers") 15a to 15d. The four rollers 15a to 15d are cylindrical rod-like bodies extending in the orthogonal direction, and are axially supported by a bearing mechanism (not shown) so as to rotate around the rotation axes L1 to L4 each serving as a central axis. The four rollers 15a to 15d are arranged such that the respective rotation axes L1 to L4 are parallel to each other and arranged at a predetermined interval in the conveyance direction, and the rotation unit 17 is provided for each of the four rollers 15a to 15d. The rotating unit 17 is a so-called electric motor, and each of the rollers 15a to 15d is rotated in the forward direction and reversely in accordance with an instruction input thereto. Further, the rotation unit 17 is connected to the control device 18, and the control device 18 controls the operation of the rotation unit 17 to rotate the four rollers 15a to 15d to crush the cement clinker. Hereinafter, the four rollers 15a to 15d will be described in detail.

The four rollers 15a to 15d are composed of two types of rollers. Specifically, the first and third from the downstream side in the conveying direction are composed of the first type of rolls, and the second and fourth are composed of the second type of rolls. Hereinafter, the first roller as the first roller of the first roller will be described with reference to FIGS. 4 to 8. The structure of 15a, next, referring to Figs. 9 to 12, the structure of the second roller 15b as the second roller will be described. The respective configurations of the third roller 15c as the third roller and the fourth roller 15d as the fourth roller are the same as those of the first roller 15a and the second roller 15b, and therefore the same reference numerals will be given thereto, and the description thereof will be omitted.

The first roller 15a has a first shaft 21 and a plurality of crush rings 22, 23. The first shaft 21 is a substantially columnar member that extends in the orthogonal direction, and is rotatably supported around the rotation axis L1 by a bearing mechanism (not shown) in the vicinity of both end portions. Further, one end portion of the first shaft 21 is connected to the rotation unit 17, and is rotationally driven by the rotation unit 17 in a form of rotation about the rotation axis L1. Further, two keys 21a are formed on the outer peripheral surface of the first shaft 21. The two keys 21a as the engaging pieces protrude outward in the radial direction and extend from one end to the other end of the first shaft 21, and are arranged at intervals of 180 degrees in the circumferential direction. A plurality of two kinds of crushing rings 22, 23 are alternately mounted on the outer peripheral surface of the first shaft 21 having such a shape. Hereinafter, the configuration of the first crushing ring 22 and the second crushing ring 23 as the two types of crushing rings 22 and 23 will be described.

The first crushing ring 22 shown in Fig. 4 is a substantially cylindrical member extending in the orthogonal direction, and has two key grooves 22a on its inner peripheral surface. The key groove 22a as the engaged groove has the same shape as the key 21a of the first shaft 21, and extends from one end of the first breaking ring 22 to the other end. Further, the key grooves 22a are arranged at intervals of 180 degrees in the circumferential direction, and the key 21a is fitted in the key groove 22a when the first breaking ring 22 is externally mounted on the first shaft 21. With this, the first crushing ring 22 is externally mounted on the first shaft 21 in a form that does not rotate relative to the first shaft 21. Further, a plurality of crushing teeth 24 are formed on the outer peripheral surface of the first crushing ring 22. In the present embodiment, 18 crushing teeth 24 are formed on the outer peripheral surface of the first crushing ring 22, and the 18 crushing teeth 24 are arranged at an equal pitch p1. Each of the crushing teeth 24 protrudes outward in the radial direction and is orthogonal to the first crushing ring 22 Extend to one end to the other. Further, the plurality of crushing teeth 24 include the crushing teeth 24 having different tooth lengths. In the present embodiment, the teeth of the three different tooth lengths of the six high teeth 24a, the four middle teeth 24b, and the eight low teeth 24c are included.

The high teeth 24a are the teeth having the largest tooth length among the three types of teeth. One of the six high teeth 24a is located on the imaginary center plane PL11 including the center axis of the first crush ring 22 (i.e., the rotation axis L1) and the center of the one side key groove 22a. The high teeth 24a are first reference teeth, and on the outer peripheral surface of the first crush ring 22, two high teeth 24a are arranged on the circumferential side with reference to the first reference teeth 24d of FIG. 4, and then the middle teeth 24b are disposed. . The middle tooth 24b is a tooth lower than the high tooth 24a and higher than the low tooth 24c, that is, has a tooth length between the high tooth 24a and the low tooth 24c. Further, four low teeth 24c are arranged in the vicinity of one side in the circumferential direction of the middle teeth 24b at equal pitches p1. The low teeth 24c are the teeth having the smallest tooth length among the three types of teeth. The middle teeth 24b are disposed again in the vicinity of one side of the four low teeth 24c in the circumferential direction, and then the high teeth 24a are disposed. The high teeth 24a are located on the imaginary center plane PL11, and two high teeth 24a are arranged in the circumferential direction on the one side in the circumferential direction at an equal pitch p1. Next, the middle teeth 24b, the four low teeth 24c, and the middle teeth 24b are sequentially arranged at equal pitches p1.

In the first crushing ring 22 configured as above, three high teeth 24a are arranged on the outer peripheral surface, and each of the three high teeth 24a arranged in line constitutes the first high tooth forming portion 25 (for example, the first of FIG. 8 described below) The grid portion of the roller 15a). Further, between the two first high-teeth forming portions 25, four low teeth 24c are arranged side by side on the one side and the other side in the circumferential direction, and each of the four low teeth 24c arranged in an array constitutes a first low tooth formation. Part 26. By this, on the outer peripheral surface of the first crushing ring 22, the first high-teeth forming portion 25 and the first low-tooth forming portion 26 are alternately arranged on the circumferential side. The first crushing ring 22 having such a shape can be externally mounted on the first axis in a standard posture in which the high teeth 24a adjacent to the first reference teeth 24d are located on the circumferential side of the first reference teeth 24d. 21 on.

Further, the first crushing ring 22 has rotational symmetry centering on the central axis, and the key groove 22a is disposed at a position shifted by 180 degrees, so that one side of the first crushing ring 22 and the other can be made with respect to the virtual central surface PL11. The inverted posture in which one side is turned over is externally mounted on the first shaft 21. In the reverse posture, as shown in FIG. 5, the circumferential position of the first reference tooth 24d does not change, but the two high teeth 24a are arranged side by side on the other side in the circumferential direction of the first reference tooth 24d. With this, by rotating the first crushing ring 22 to the left and right with respect to the virtual center plane PL11, the first high tooth forming portion 25 and the first low tooth can be formed on the outer peripheral surface with reference to the first reference tooth 24d. The portions 26 are alternately arranged in the circumferential direction on the other side.

The second crushing ring 23 shown in FIG. 6 is a substantially cylindrical member extending in the orthogonal direction, and has substantially the same structure as the first crushing ring 22. That is, the second crushing ring 23 has two key grooves 23a as the engaged grooves on the inner peripheral surface thereof, and has a plurality of crushing teeth 27 on the outer peripheral surface. The plurality of crushing teeth 27, like the plurality of crushing teeth 24 of the first crushing ring 22, include crushing teeth 27 having different tooth lengths, and in the present embodiment, six high teeth 27a, four middle teeth 27b, and eight low teeth are included. 27c Three different tooth length teeth. Further, the respective arrangement of the plurality of crushing teeth 27 is also the same as the plurality of crushing teeth 24 of the first crushing ring 22, and the second reference tooth corresponding to the first reference tooth 24d on the outer peripheral surface of the second crushing ring 23 27e is arranged in this order in the circumferential direction with two high teeth 27a, middle teeth 27b, four low teeth 27c, middle teeth 27b, three high teeth 27a, middle teeth 27b, four low teeth 27c, and middle teeth 27b. As a difference between the first crushing ring 22 and the second crushing ring 23, in the second crushing ring 23, the tooth bottom 27d formed between the second reference tooth 27e and the middle tooth 27b is located at the center including the second crushing ring 23. The imaginary center plane PL12 at the center of the shaft and the key groove 23a is disposed with the second reference tooth 27e offset from the imaginary center plane by 1/2 times the pitch p1. That is, multiple broken The plurality of teeth 24 and the plurality of crushing teeth 24 of the first crushing ring 22 are arranged at a pitch of 1/2 times the pitch p1 about the rotation axis L1.

In the second crushing ring 23 thus formed, similarly to the first crushing ring 22, the second high-teeth forming portion 28 is constituted by three high teeth 27a arranged in an array, and the second low-tooth forming portion 29 is arranged in an array. Four low teeth 27c are formed. In other words, on the outer circumferential surface of the second crushing ring 23, the second high tooth forming portion 28 and the second low tooth forming portion 29 are alternately arranged on the circumferential side with respect to the second reference tooth 27e. The second crushing ring 23 having such a shape can be attached to the first shaft 21 in a standard posture in which the high teeth 27a adjacent to the second reference teeth 27e are positioned on one side in the circumferential direction with respect to the second reference teeth 27e.

Further, the second crushing ring 23 has rotational symmetry about the central axis, and the key groove 23a is disposed at a position shifted by 180 degrees similarly to the first crushing ring 22, so that the second crushing ring 23 can be second with respect to the virtual central surface PL12. The inverted posture in which one side and the other side of the breaking ring 23 are reversed is externally mounted on the first shaft 21. In the reverse posture, as shown in FIG. 7, the second reference tooth 27e can be disposed at a position inverted with respect to the imaginary center plane PL12, and the two high teeth 27a are arranged in the circumferential direction of the second reference tooth 27e. On one side. By inverting the second crushing ring 23 to the right and left with respect to the virtual center plane PL12, the second high tooth forming portion 28 and the second low tooth forming portion 29 can be formed on the outer peripheral surface with reference to the second reference tooth 27e. Alternately arranged in the circumferential direction on the other side.

The two types of crushing rings 22, 23 configured as described above are externally attached to the first shaft 21 in the form of alternately switching between the standard posture and the reverse posture. That is, a plurality of crushing rings 22, 23 are externally mounted on the first shaft 21 as shown in FIG. The first crushing ring 22 is externally mounted on the other end side of the first shaft 21 in a standard posture, and the second crushing ring 23 is adjacent to the first crushing ring 22 in a standard posture. Installed. With this, the second crushing ring 23T of the standard posture is disposed such that the second reference tooth 27e is offset from the first reference tooth 24d of the first crushing ring 22T of the standard posture by a half pitch p1/2. That is, the second crushing ring 23T is externally attached to the first shaft 21 in a state in which a plurality of the crushing teeth 27 and the plurality of crushing teeth 24 of the first crushing ring 22 are all shifted by one-half of the pitch p1/2. In the two crushing rings 22T and 23T which are externally mounted as described above, the first high tooth forming portion 25 and the second high tooth forming portion 28 are disposed substantially at a position closer to the circumferential side than the virtual center planes PL11 and PL12. on.

Further, on the first shaft 21, the first crushing ring 22 is externally attached to the two crushing rings 22T, 23T in an inverted posture, and the second crushing ring 23 is adjacent to the first crushing ring 22 Take the exterior in a flipped position. In the two crushing rings 22R and 23R which are externally mounted in the inverted posture, the first high-teeth forming portion 25 and the second high-tooth forming portion 28 are disposed substantially in the circumferential direction as compared with the imaginary central faces PL11 and PL12. On the other side of the position. That is, the first high-teeth forming portion 25 and the second high-tooth forming portion 28 of the two crushing rings 22R, 23R in the inverted posture, and the first high-tooth forming portion 25 and the second highest in the crushing rings 22T, 23T of the standard posture The tooth forming portion 28 is located on the opposite side to the imaginary center planes PL11 and PL12.

Further, on the first shaft 21, the two crushing rings 22T, 23T in the standard posture are sequentially externally attached to the two crushing rings 22R, 23R in the inverted posture, and the inverted posture is placed at a position adjacent thereto. The two crushing rings 22R, 23R are further externally mounted in order. The plurality of crushing rings 22T, 22R, 23T, and 23R are externally mounted on the first shaft 21 in this manner, thereby constituting the first roller 15a.

On the outer circumferential surface of the first roller 15a configured as described above, the high tooth formation portion 30H is formed by the adjacent first high tooth formation portion 25 and the second high tooth formation portion 28 by the first low first The tooth forming portion 26 and the second low tooth forming portion 29 are formed with a low tooth forming portion 30L. The high tooth forming portion 30H and the low tooth forming portion 30L are in the orthogonal direction on the imaginary center plane One side and the other side of PL11 and PL12 are alternately arranged. With this, the high tooth forming portion 30H and the low tooth forming portion 30L are arranged in a zigzag shape on the outer peripheral surface of the first roller 15a. Further, the second roller 15b is disposed adjacent to the first roller 15a at a predetermined interval and adjacent to the conveyance direction.

The second roller 15b has a second shaft 31 and a plurality of crush rings 32, 33. The second shaft 31 has the same shape as the first shaft 21. That is, the second shaft 31 is a cylindrical member extending in the orthogonal direction, and the vicinity of both end portions thereof is rotatably supported around the rotation axis L2 by a bearing mechanism (not shown). Further, one end portion of the second shaft 31 is connected to the rotation unit 17, and is rotationally driven by the rotation unit 17 in a form of rotation about the rotation axis L2. Moreover, two keys (engagement pieces) 31a which are arranged at intervals of 180 degrees in the circumferential direction are formed on the outer peripheral surface of the second shaft 31. A plurality of two types of crushing rings 32, 33 are externally mounted on the outer peripheral surface of the second shaft 31 having such a shape.

The first crushing ring 32 shown in Fig. 9 is a substantially cylindrical member extending in the orthogonal direction, and has two key grooves 32a on its inner peripheral surface. The key groove 32a as the engaged groove has the same shape as the key 31a of the second shaft 31, and extends from one end of the first breaking ring 32 to the other end. Further, the key grooves 32a are arranged at intervals of 180 degrees in the circumferential direction, and the key 31a is fitted in the key groove 32a when the first breaking ring 32 is externally mounted on the second shaft 31. With this, the first crushing ring 32 is externally mounted on the second shaft 31 in a form that does not rotate relative to the second shaft 31. Further, a plurality of crushing teeth 34 are formed on the outer peripheral surface of the first crushing ring 32. In the present embodiment, 18 crushing teeth 34 are formed on the outer peripheral surface of the first crushing ring 32, and the 18 crushing teeth 34 are arranged at an equal pitch p2. Each of the crushing teeth 34 protrudes outward in the radial direction and extends from one end of the first crushing ring 32 to the other end. Further, each of the crushing teeth 34 is formed on the outer peripheral surface of the first crushing ring 32 in such a manner that the tooth length thereof is the same.

In more detail, as the first reference of one of the plurality of crushing teeth 34 The teeth 34a are located on the imaginary center plane PL21 including the center axis of the first crush ring 32 (i.e., the rotation axis L2) and the center of the key groove 32a, and the other crushing teeth 34 are equalized with the first reference tooth 34a as a reference. Arranged from p2 and disposed on the outer peripheral surface of the first crushing ring 32. The first crushing ring 32 configured as described above is formed to have rotational symmetry about its central axis. The first crushing ring 32 is externally attached to the second shaft 31 in a form in which the key 31a on which the first reference tooth 34a is located on one side of the second shaft 31 is extended on the outer side in the radial direction.

The second crushing ring 33 shown in FIG. 10 is a substantially cylindrical member extending in the orthogonal direction, and has substantially the same structure as the first crushing ring 32. That is, the second crushing ring 33 has two key grooves (engaged grooves) 33a on its inner peripheral surface, and has a plurality of crushing teeth 35 on the outer peripheral surface. Similarly to the first crushing ring 32, a plurality of crushing teeth 35 are formed on the outer peripheral surface of the second crushing ring 33 in the same tooth length. In the present embodiment, 18 crushing teeth 35 are formed on the outer peripheral surface of the second crushing ring 33, and the 18 crushing teeth 35 are arranged at the equal pitch p2. Further, the second crushing ring 33 has a second reference tooth 35a corresponding to the first reference tooth 34a as one of the plurality of crushing teeth 35, and the second reference tooth 35a and the central axis including the second crushing ring 33 ( In other words, the rotation axis L2) and the virtual center plane PL22 at the center of the key groove 33a on one side are arranged offset by 1/3 times the pitch p2. That is, the plurality of teeth of the second crushing ring 33 are all arranged with the plurality of crushing teeth 34 of the first crushing ring 32 shifted by 1/3 times the pitch p2 in the direction around the rotating shaft L2. The second crushing ring 33 having such a shape can be attached to the second shaft 31 in a standard posture in which the second reference tooth 35a is located on the circumferential side with respect to the virtual central surface PL22.

Further, the second crushing ring 33 has rotational symmetry centering on the central axis thereof, and the key groove 33a is disposed at a position shifted by 180 degrees, so that one side of the second crushing ring 33 can be made with respect to the virtual central surface PL22. The reverse posture in which the other side is turned over is externally mounted on the second shaft 31. With this, as shown in FIG. 11, the second reference tooth 35a can be disposed at a position inverted with respect to the imaginary center plane PL22, and the second reference tooth 35a and the imaginary center plane PL22 can be shifted to the other side in the circumferential direction. /3 pitch p2 is configured. That is, the plurality of crushing teeth 35 of the second crushing ring 33 are all disposed with the plurality of crushing teeth 34 of the first crushing ring 32 shifted by 2/3 times the pitch p2 in the direction around the rotating shaft L2. By inverting the second crushing ring 33 with respect to the imaginary center plane PL22, it is possible to form the plurality of crushing teeth 35 all of which are offset from the plurality of crushing teeth 34 of the first crushing ring 32 in the direction around the rotation L2. /3 times the second breaking ring 33 of the pitch p2.

The two types of crushing rings 32 and 33 configured as described above are externally attached to the second shaft 31 in such a manner that the crushing teeth 34 and 35 formed in the respective crushing rings 32 and 33 are shifted by 1/3 times the pitch p2 one by one. . That is, a plurality of crushing rings 32, 33 are externally mounted on the second shaft 31 as shown in FIG. A first crushing ring 32 is externally mounted on the other end side of the second shaft 31, and the first reference tooth 34a is located radially outward of the key 31a of the second shaft 31.

Further, a second crushing ring 33 is externally attached to the second shaft 31 adjacent to the first crushing ring 32 in a standard posture. The second crushing ring 33T in the standard posture is disposed such that the second reference tooth 35a and the first reference tooth 34a of the first crush ring 32 are shifted by 1/3 times the pitch p2 in the circumferential direction. In other words, the second crushing ring 33T is externally attached to the second shaft 31 in a state in which the plurality of crushing teeth 35 and the crushing teeth 34 of the first crushing ring 32 are all shifted by 1/3 times the pitch p2. Further, the second crushing ring 33 is externally attached to the second shaft 31 in a reversed position at a position adjacent to the second crushing ring 33T in the standard posture. The second crushing ring 33R in the inverted posture is disposed such that the second reference tooth 35a and the first reference tooth 34a of the first crushing ring 32 are shifted by 1/3 times the pitch p2 toward the other side in the circumferential direction. That is, the second crushing ring 33R is externally attached to the second shaft 31 in a state in which the plurality of crushing teeth 35 and the crushing teeth 34 of the first crushing ring 32 are all shifted by 2/3 times the pitch p2. Further, at a position adjacent to the second crushing ring 33R of the reverse posture The first crushing ring 32, the second crushing ring 33T in the standard posture, and the second crushing ring 33R in the inverted posture are externally repeatedly mounted. The plurality of crushing rings 32, 33T, and 33R are externally attached to the second shaft 31 in this manner, thereby constituting the second roller 15b.

On the outer circumferential surface of the second roller 15b configured as described above, the tooth row 36 is formed by the crushing teeth 34 and 35 adjacent in the axial direction, that is, in the orthogonal direction. Further, since the adjacent crushing teeth 34, 35 are arranged offset by 1/3 times of the pitch, the tooth row 36 is twisted in the circumferential direction on the outer peripheral surface of the second roller 15b in the circumferential direction. Extending (for example, as one tooth row 36, reference may be made to the mesh portion of the second roller 15b of FIGS. 3 and 12). Further, the first roller 15a disposed adjacent to the second roller 15b is also similarly configured to be shifted by one-half pitch in the axial direction, that is, in the orthogonal direction and on the other side in the circumferential direction. The crushing teeth 24 and 27 arranged in the P1/2 form a tooth row which extends in the orthogonal direction so as to be twisted on the outer circumferential surface of the first roller 15a toward the other side in the circumferential direction.

Further, as described above, the third roller 15c is formed in the same configuration as the first roller 15a, and the fourth roller 15d is formed in the same configuration as the second roller 15b.

The four rollers 15a to 15d configured as described above are arranged at predetermined intervals in the conveyance direction as described above, and gaps S1 to S3 are formed between the adjacent rollers 15a to 15d, respectively. Since the rollers 15a to 15d rotate and the crushing teeth 24, 27, 34, and 35 are formed on the outer circumferential surfaces of the rollers 15a to 15d, the widths of the gaps S1 to S3 (that is, the length in the conveying direction) are broken. The teeth 24, 27, 34, 35 vary in position from one another. That is, when the high teeth 24a and 27a face the crushing teeth 34 and 35, the widths of the gaps S1 to S3 are the narrowest (the minimum width), and the widths of the S1 to S3 are the widest (the maximum width) when the tooth bottoms face each other. When the width of the gaps S1 to S3 is narrowed, although the particle size of the cement clinker after crushing can be reduced, the load acting on the rolls 15a to 15d at the time of crushing increases. also, When the width of the gaps S1 to S3 is widened, although the load at the time of crushing is reduced, the cement clinker having a larger particle diameter is discharged from below. In general, the minimum width of the gaps S1 to S3 is set according to the allowable amount of the load acting on the rollers 15a to 15d at the time of the crushing, and the maximum width of the gaps S1 to S3 is set according to the allowable particle diameter of the cement clinker. Further, the interval between the adjacent rollers 15a to 15d and the tooth length of each of the crushing teeth 24, 27, 34, 35 are set in accordance with their minimum width and maximum width.

The four rollers 15a to 15d formed in such a configuration are rotationally driven by the respective rotation units 17. For example, in the control device 18, the normal mode and the high break mode can be selected. In the normal mode, the first roller 15a rotates to the other side in the circumferential direction, and the second to fourth rollers 15b to 15d rotate to one side in the circumferential direction. In the high crush mode, the first roller 15a and the third roller 15c are oriented. The other side of the circumferential direction rotates, and the second roller and the fourth roller 15b, 15d rotate toward one side in the circumferential direction. The four rollers 15a to 15d thus rotated receive the cement clinker rolled off from the front end of the cooling device 1, and the received cement clinker is broken into a particle diameter below the allowable particle diameter.

More specifically, in the normal mode, the second to fourth rolls 15b to 15d convey the rolled cement clinker to the first roll 15a side. At this time, in the second to fourth rolls 15b to 15d, the cement clinker having the particle diameter below the particle diameter is allowed to fall from the gaps S2, S3, and the bulk cement clinker having a larger particle size is transported to The first roller 15a side. The first roller 15a is rotated together with the second roller 15b in such a manner that the cement clinker on the first roller and the second roller 15a, 15b is wound therebetween (i.e., the gap S1) by entangling the aforementioned cement clinker In the meantime, it is broken. The cement clinker which has a large particle size below the allowable particle size is broken down from the gap S1 to the lower side by crushing.

On the other hand, in the high crushing mode, the third roller 15c is also carried out together with the fourth roller 15d in such a manner that the cement clinker on the third roller and the fourth roller 15c, 15d is involved (i.e., the gap S3). Rotating, by breaking the aforementioned cement clinker, thereby breaking. like this, The crushing is performed at two places of the roll crusher 15, so that more cement clinker can be broken and dropped to the lower side.

In the first roller 15a and the third roller 15c of the roll crusher 15 having such a configuration, the load acting on the crushing rings 22T, 22R, 23T, and 23R during rotation is caused by the pair of crushing teeth 24, 27 When the cement clinker is crushed, it increases, and the load applied at the other time decreases. In the first roller 15a and the third roller 15c, the adjacent crushing teeth 24 and 27 are arranged so as to be shifted by one-half of the pitch p1/2 in the circumferential direction. Therefore, it is possible to act on the rotation. The timing at which the load of each of the crushing rings 22T, 22R, 23T, and 23R increases is different. That is, the timing at which the load acts on each of the crushing rings 22T, 22R, 23T, and 23R at the time of rotation can be shifted from each other. Thereby, the change in the load acting on the first roller 15a and the third roller 15c can be averaged over time, and as a result, the change in the load of the rotating unit 17 can be averaged over time.

Further, in the first roller 15a and the third roller 13c, each of the crushing rings 22 and 23 has crushing teeth 24a to 24c and 27a to 27c having different tooth lengths. That is, the high teeth 24a and 27a and the low teeth 24c and 27c are formed in each of the crushing rings 22 and 23. Thereby, the cement clinker which cannot be crushed by the high teeth 24a and 27a and which cannot be crushed can be clamped and crushed by the low teeth 24c and 27c. Thereby, it is possible to suppress the cement clinker which remains on the first roller 15a and the third roller 15c with a large block which cannot be bitten.

Further, in the first roller 15a and the third roller 15c, the load acting on the crushing rings 22, 23 reaches a peak when the cement clinker is crushed by the high teeth 24a, 27a of the high tooth forming portion 30H. The high tooth forming portion 30H and the low tooth forming portion 30L are arranged in a zigzag shape on the outer circumferential surfaces of the first roller 15a and the third roller 15c, so that the high teeth 24a, 27a of the first roller 15a and the third roller 15c can be prevented. Arranged adjacently in the orthogonal direction. With this, you can make a difference The change in the load of the first roller 15a and the third roller 15c is averaged over time, and as a result, the change in the load of the rotating unit 17 over time can be averaged.

Further, the first crushing ring 22 and the second crushing ring 23 are externally mounted on the first shaft 21 in a standard posture, and the first crushing ring 22 and the second crushing ring 23 are externally mounted in the inverted posture adjacent thereto. The first roller 15a and the third roller 15c are manufactured by repeating the process on a shaft 21. Therefore, the first roller 15a and the third roller 15c can be manufactured by two kinds of crushing rings 22, 23. Therefore, although the four crushing rings 22T, 22R, 23T, 23R are used, the kinds of the molds used in manufacturing them can be suppressed to two types, so that the manufacturing cost can be reduced.

Further, in the second roller 15b and the fourth roller 15d, the adjacent crushing teeth 34 and 35 are also arranged in the circumferential direction by 1/3 times the pitch p2, so that they can be applied to each of the second rollers 15b and 35d. The timing at which the load of the crushing rings 32, 33T, and 33R increases is different. That is, the timing at which the load acts on each of the crushing rings 32, 33T, and 33R at the time of rotation can be shifted from each other. Thereby, the change in the load acting on the second roller 15b and the fourth roller 15d can be averaged over time, whereby the change in the load of the rotary unit 17 over time can be averaged.

Further, in the second roller 15b and the fourth roller 15d, the tooth row 36 on the outer circumferential surface thereof is twisted in the orthogonal direction so as to be twisted in the circumferential direction (refer to the second roller 15b of FIGS. 3 and 12). Part of the grid). Therefore, when the second roller 15b and the fourth roller 15d are respectively rotated, the cement clinker which is not able to fall from the gaps S1 to S3 and remains on the rollers 15b and 15d can be turned to the orthogonal direction side ( For example, the other end side of the second shaft 31 is conveyed. The cement clinker is conveyed like this so as to collide with other agglomerated cement clinker, so that the agglomerated cement clinker can be pulverized. Further, by conveying the cement clinker, the bulk cement clinker remaining on the rolls 15b and 15d can be guided to the gaps S1 to S3 which can be bitten well, so that even a large block Cement clinker can also bite well.

Further, in the first roller 15a, the crushing teeth 24 and 27 adjacent in the orthogonal direction are also shifted by one-half pitch p1/2 from the other side in the circumferential direction, and by the staggered The breaking teeth 24, 27 form a tooth row. The tooth row extends in the orthogonal direction in a form of twisting on the outer circumferential surface of the first roller 15a toward the other side in the circumferential direction. Therefore, by rotating the first roller 15a to the other side in the circumferential direction, it is possible to transport the larger clinker clinker remaining on the roller 15a to the side in the orthogonal direction by the tooth row, thereby exerting The second roller and the tooth row 36 of the fourth roller 15b, 15d have the same operational effects.

Further, the first crushing ring 32 is externally mounted on the second shaft 31, and the second crushing ring 33T in the standard posture and the second crushing ring 33R in the inverted posture are sequentially externally mounted on the second shaft 31. This process is repeated to produce the second roller and the fourth roller 15b, 15d. Therefore, the second roller 15b and the fourth roller 15d can be manufactured by the two types of crushing rings 32, 33. Therefore, although three kinds of crushing rings 32, 33T, and 33R are used, the kinds of molds used in manufacturing them can be suppressed to two types, and the manufacturing cost can be reduced.

Further, in the roll crusher 15 of the cooling device 1, the first to fourth rolls 15a to 15d are arranged in order, and the adjacent rolls 15a to 15d are arranged in different types of rolls. In this way, it is possible to diversify the portions facing each other in the gaps S1 to S3 at the time of rotation. For example, the high teeth 24a and the tooth bottom, the low teeth 24c and the crushing teeth 34, and the low teeth 24c may be opposed to the tooth bottom or the like. Thereby, the change in the magnitude of the load acting on the crushing rings 22, 23, 32, 33 can be more evenly changed, whereby the change in the load of the rotating unit 17 can be averaged over time.

<Other Embodiments>

In the cooling device 1 of the present embodiment, the four rollers 15a to 15d are disposed such that the adjacent rollers 15a to 15d are different types of rollers, but all of the same rollers may be used. For example, a roller having the same structure as that of the first roller 15a may be employed in the four rollers, or a roller having the same structure as the second roller 15b may be employed in the four rollers 15a to 15d. Further, the rotation control mode of the four rollers 15a to 15d at the time of the crushing is not limited to the above-described normal mode and high crush mode, and can be rotated in different rotation control modes.

Further, the amount of shift in which the adjacent crushing teeth 24, 27, 34, 35 are shifted by 1/2 times or 1/3 times of the pitch may be 1/4 times the pitch. In other words, the amount of shift of the adjacent crushing teeth 24, 27, 34, and 35 may be 1/n times (n: an integer). In this manner, by shifting the 1/n times pitch, the second reference tooth and the first reference tooth are arranged in a circumferential direction by 360/(n×N) (N: the number of teeth of the second crush ring). With this, if the second crushing ring is turned over, the crushing ring of the crushing teeth can be arranged as a broken tooth with a breaking tooth of the first crushing ring of 360×(n-1)/(n×N). The side of the circumferential direction is shifted by (n-1)/n times the pitch of the crushing ring). Therefore, the type of the mold used for manufacturing the crushing ring is smaller than the type of the crushing ring to be used, so that the manufacturing cost can be reduced.

Further, in the present embodiment, the widths of the gaps S1 to S3 are changed by changing the tooth surface positions of the respective crushing teeth 24 and 27 in the first roller 15a and the third roller 15c, but they may be changed by The position of the bottom of the tooth changes the width of the gaps S1 to S3. Further, in each of the rollers 15a to 15d, keys 21a and 31a are formed on the shafts 21 and 31, and key grooves 22a, 23a, 32a and 33a are formed in the crushing rings 22, 23, 32 and 33, but they may be A key groove is formed on the shaft and a key is formed on the crush ring.

Further, a plurality of crushing rings 22 and 23 are arranged in turn, but they may also be At least one crushing ring having differently configured crushing teeth is used in the plurality of crushing rings. In this case as well, the timing at which the applied load is increased can be shifted by at least one of the crushing rings, and thus it is useful to average the load over time.

Further, the high-tooth forming portion 30H and the low-tooth forming portion 30L of the first roller 15a and the third roller 15c need not necessarily be arranged in a zigzag shape, and may be arranged in a strip shape. Further, the high tooth forming portion 30H and the low tooth forming portion 30L may be arranged in any shape.

15‧‧‧ Roller Crusher

15a~15d‧‧‧roll

17‧‧‧Rotating unit

18‧‧‧Control device

21‧‧‧first axis

21a‧‧‧ key

22‧‧‧First Breaking Ring

22T‧‧‧ first break ring in standard posture

22R‧‧‧The first broken ring in the flipped position

23‧‧‧Second Breaking Ring

23T‧‧‧ second break ring in standard position

23R‧‧‧ second breaking ring in the flipped position

31‧‧‧second axis

31a‧‧‧ key

32‧‧‧First Breaking Ring

33‧‧‧Second Breaking Ring

33T‧‧‧ second break ring in standard position

33R‧‧‧ second broken ring in the flipped position

36‧‧‧ teeth

L1~L4‧‧‧Rotary axis

S1~S3‧‧‧ gap

Claims (7)

A roll crusher for a cooling device for crushing the particulate conveyance in a cooling device that performs cooling while conveying a particulate conveyed object, wherein the gap-shaped transporting material is provided in parallel with each other with a gap therebetween a plurality of rollers that crush the granular conveyed object by rotating the rotating unit around an axis orthogonal to the conveying direction and parallel to each other; at least one of the plurality of rollers is a load reducing roller; and the load reducing roller a plurality of crushing rings; each of the plurality of crushing rings having a plurality of crushing teeth disposed on the outer peripheral surface at equal intervals in the circumferential direction; and the plurality of crushing teeth of the at least one of the plurality of crushing rings The plurality of the crushing teeth of the adjacent crushing rings are arranged to be shifted in the circumferential direction. The roller crusher of the cooling device according to the first aspect of the invention, wherein the plurality of crushing teeth are disposed on an outer circumferential surface of the crushing ring at a predetermined pitch and at an axis extending with respect to the axis The plurality of the crushing teeth of the crushing ring adjacent in the direction are arranged one by one in the circumferential direction by 1/n times the pitch, wherein n is an integer of 2 or more. The roll crusher of the cooling device according to claim 2, wherein the load reducing roller has a shaft extending in the axial direction and rotating by the rotating unit about the axis; the shaft is at the aforementioned axis An engaging piece extending in the direction and having a mutual engagement on the outer peripheral surface thereof And any one of the engaged grooves; the plurality of crushing rings have the other of the engaging piece and the engaged groove on the inner circumferential surface, and the engaging piece is engaged with the engaged groove And externally mounted on the shaft in a form in which the relative displacement cannot occur in the circumferential direction; the plurality of crushing rings include a first crushing ring and a second crushing ring; and the first crushing ring has the plurality of crushing teeth a first reference tooth of the first; the second crushing ring has a second reference tooth as one of the plurality of crushing teeth; the first reference tooth is located at a center of the first breaking ring and the engaging piece and the aforementioned a connecting line at a center of the other of the engaging grooves; wherein the second reference tooth and the first reference tooth are disposed 360/(n×N) degrees in the circumferential direction, wherein N is the second breaking ring Number of teeth. The roll crusher of the cooling device according to claim 1, wherein the plurality of crushing teeth include: the crushing teeth having a first height, that is, high teeth; and having a lower level than the first height The aforementioned two teeth of the height, that is, the low teeth. The roll crusher of the cooling device according to claim 4, wherein the outer peripheral surface of the load reducing roller has a plurality of high tooth forming portions in which the plurality of high teeth are arranged in the circumferential direction, and a plurality of The low tooth formation portion in which the low teeth are arranged in the circumferential direction, the high tooth formation portion and the low tooth formation portion are arranged in a zigzag shape. The roll crusher of the cooling device according to claim 5, wherein the load reducing roller has an axis extending in an axial direction in which the axis extends and rotating by the rotating unit about the axis; The crushing teeth are arranged at a predetermined pitch and at equal intervals in the aforementioned crushing And the plurality of crushing teeth of the crushing ring adjacent to each other in the axial direction are shifted by 1/2 times the pitch in the circumferential direction on the outer peripheral surface of the ring; the shaft is in the axial direction And extending and having any one of an engagement piece and an engagement groove that are engaged with each other on the outer circumferential surface; the plurality of crushing rings have the other of the engagement piece and the engaged groove on the inner circumferential surface, Further, the engaging piece is engaged with the engaged groove, and is externally attached to the shaft so as not to be displaced relative to each other in the circumferential direction; and at least two or more of the outer peripheral surface of the crushing ring are arranged The high tooth forming portion of the high tooth and the low tooth forming portion arranging at least two or more of the aforementioned low teeth; the plurality of crushing rings include a first crushing ring and a second crushing ring; and the first crushing ring has the plurality of One of the crushing teeth, and the first reference tooth located on the connecting line of the center of the first crushing ring and the center of the engaging piece and the other of the engaging grooves The outer peripheral surface of the first crushing ring is alternately arranged with the high tooth forming portion and the low tooth forming portion in the circumferential direction with respect to the first reference tooth; the second crushing ring has the plurality of crushing teeth And the second reference tooth disposed with respect to the first reference tooth shifted by 1/2 times the pitch in the circumferential direction, and the second reference tooth on the outer peripheral surface of the second crush ring The reference has the high-teeth formation portion and the low-tooth formation portion alternately arranged in the circumferential direction. The first fracture ring and the second fracture ring have a rotational symmetry about the respective axes. Roll crushing of the cooling device according to any one of claims 1 to 6 The plurality of rollers have at least two or more of the load reducing rollers adjacent to each other; and the adjacent load reducing rollers respectively have the crushing ring having different amounts of the plurality of crushing teeth in the circumferential direction .