JP2006326417A - Crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crusher, more specifically, a crusher for mainly crushing vegetable substances such as branches, leaves and bark of timber from thinning or cut-down wood, leaves of a bamboo, bamboo grass, a ditch reed, etc. and abrading the crushed vegetable fibers to fibrillate them. <P>SOLUTION: The crusher has a rotatable rotary shaft 2 having spiral blades 20 and 21, a plurality of the crushing chambers 1a, 1b and 1c provided to the rotary shaft 2 in its longitudinal direction, the passing ports 30 provided between the crushing chambers, the discharge plate 5 or partition plate 3 capable of being heated by the exhaust heat of the engine 7 of a power source and the discharge port 50 provided to the upstream part of the flow of crushing targets moved by the rotation of the spiral blades. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a crushing apparatus, and more particularly, crushing plant materials such as thinned wood and branches and bark of wood that has been cut, bark, and bamboo leaves such as bamboo, firewood, firewood, etc. It is a crushing device that wears and defibrates.

Japanese Utility Model Publication No. 2-33291 is known as an apparatus for crushing and compressing wastes and the like with a spiral blade.
The prior art apparatus crushes, kneads and compresses general municipal waste and industrial waste containing polymer substances, generates heat, melts them, and dries them to form solid rod-like solids. Solidification device.

  The above-mentioned prior art device is described as follows: “a horizontally long casing having a waste inlet at one end and an outlet at the other end; a rotating shaft disposed in the casing along the longitudinal direction thereof; A helical body attached to the peripheral body, a plurality of rotary pressing bodies interposed between the casing with a small gap in the middle of the helical body and a plurality of oblique grooves formed on the outer peripheral surface, and the rotational body A solidifying device for waste including a polymer comprising a steam discharge pipe disposed immediately after the compressed body and a perforated plate for extrusion attached to the outlet.

Further, in the above-mentioned device "the heater unit is embedded in the perforated plate", and further, "the rotary pressing body is composed of a truncated cone-shaped portion having a gradually reduced diameter on the upstream side and a cylindrical portion on the downstream side" Device.
Japanese Utility Model Publication No. 2-33291

  In the prior art, a heater unit is embedded and heated in a perforated plate that extrudes the object to be processed, the object to be processed is softened, and the bar-shaped solid matter is continuously discharged to facilitate extrusion. A power supply is required for operation, and an electricity generator or the like is separately required for use in places where electricity cannot be used such as outdoors.

  In addition, a rotary pressing body is provided in the middle of the spiral body to compress the object to be processed, but there is a problem that the structure of the rotary sliding part is complicated, processing accuracy is increased, and manufacturing costs are increased. When the raw material for crushing is charged, there is a problem that it takes too much time to crush it to a size that allows the rotating compressed body part to pass through only the spiral on the inlet side, such as waste that is thrown into the apparatus. There was no effect of grinding the material to be crushed.

  Furthermore, recently, a large number of fallen timbers caused by natural disasters such as typhoons and a large amount of timbers that flow to dams have become enormous, and there has been no compact device that can handle these effectively and easily.

  In order to solve the above problems, a plurality of crushing chambers provided in the longitudinal direction of the rotating shaft, a partition plate provided between the crushing chambers and having an inter-chamber passage, and rotation of a spiral blade provided with an object to be crushed on the rotating shaft A crushing apparatus having a raw material input port provided in an upstream part of a flow moved by the above and a discharge port provided in a downstream part of a flow in which a material to be crushed moves by rotation of a spiral blade provided on the rotating shaft, This invention proposes a crushing apparatus characterized in that either a discharge plate provided with the discharge port and / or the partition plate are heated by exhaust heat of an engine which is a driving power source.

  Further, a crushing device described in the column 0008, which has a crushing object wear unevenness on a discharge plate and / or a partition plate facing upstream of the flow in which the material to be crushed moves by the rotation of the spiral blade, is proposed. .

  In addition, the present invention proposes a crushing apparatus described in the column 0008 or 0009, in which spiral blades located in a plurality of crushing chambers are spiral blades having a pitch smaller in the crushing chamber on the downstream side than in the crushing chamber on the upstream side.

  Further, the downstream end of each spiral blade provided on the rotating shaft and located in each crushing chamber is close to the partition plate and the discharge plate or one of the upstream facing walls, respectively. The described crushing device is proposed.

  Furthermore, the inter-chamber passage opening of the partition plate provided between the crushing chambers has an opening area in which the opening area on the downstream side is wider than the opening area on the upstream side in the thickness of the partition plate. A crushing device according to 0008 or 0009 or 0010 or 0011, which is a passage between rooms, is proposed.

  According to the present invention, when a product produced by crushing and grinding a material to be crushed is produced, especially plant-based crushed material such as thinned wood is crushed and ground to release plant fibers. The product on wet powder does not need to be heat sterilized or killed again because the frictional heat generated when it is loosened and the exhaust heat of the engine are automatically sterilized and killed. Or, weeds can be prevented or composted on the soil surface.

  In addition, the present invention is compact and easy to move, uses an engine without using electricity as a power source, and is easy to transport and install in a forest with no power source. It is possible to process many fallen timbers that occur in disasters and a large amount of timber that flows into dams, making it easy to effectively treat those fallen trees and contributing to the natural circulation of materials.

  The present invention also has a crushing chamber provided in the longitudinal direction of the rotating shaft, an inter-chamber passage opening provided between the crushing chambers, and directed upstream of the flow that is moved by the rotation of the spiral blade of the object to be crushed. Because of the partition plates and discharge plates that have irregularities for wear on the wall that was crushed, even a fairly large thick branch is broken into smaller pieces by crushing and wear each time it passes between multiple crushing chambers. A part of the product was not dumped, and the clogging of the device was greatly reduced as compared with the past.

  FIG. 1 showing a plan view, FIG. 2 showing a front view, FIG. 3 showing a side view seen from the upstream side, and one embodiment of a series of partition plates and discharge plates from the upstream side to the downstream side. 4 to 6 showing the partition plate, FIGS. 7 to 10 showing another embodiment of the partition plate, FIG. 11 showing another embodiment of the discharge plate, and a diagram showing a horizontal cross-sectional view of the inter-room passage opening of the partition plate 12, FIG. 13 showing the upstream spiral blade, FIG. 14 showing the downstream spiral blade, FIG. 15 which is a plan view of the raw material inlet, and a sectional view of an example partition plate provided with an engine exhaust gas passage Description will be made based on FIG. 16 shown, and FIG. 17 showing a sectional view of a discharge plate provided with an exhaust gas passage of the engine.

  The crushing apparatus according to one embodiment of the present invention includes two rotating shafts 2a and 2b that are provided in parallel and have spiral blades 20 and 21 in opposite directions, and upstream in the longitudinal direction of the rotating shafts 2a and 2b. From each of the first crushing chamber 1a, the second crushing chamber 1b, the third crushing chamber 1c, the crushing chamber 1 provided, and between each of the first crushing chamber 1a and the second crushing chamber 1b and the second crushing chamber 1b. The first partition plate 3a and the second partition plate 3b provided between the third crushing chambers 1c, the raw material input port 4 opened at the top of the first crushing chamber 1a, and the exhaust provided downstream of the third crushing chamber 1c. It has a discharge plate 5 having an outlet 50, a speed reducer 6, and an engine 7. Reference numeral 8 denotes a frame base, which has wheels 80 and is movable. The material to be crushed is thrown into the apparatus from the raw material inlet 4 and moved by the rotation of the spiral blades 20 and 21. In this specification, the meaning of upstream and downstream is upstream of the flow moved by the rotation of the spiral blades 20 and 21. Downstream means position and direction.

  FIG. 15 is a plan view of the raw material charging port 4 that opens to the top of the first crushing chamber 1a. The raw material charging port 4 has a rectangular tube shape with an upper surface opened. Two danger prevention bars 40 are provided in the middle of the cylindrical portion. The danger prevention bar 40 prevents the upper end portion from making a large movement or an abnormal movement when it is caught in the spiral blades 20 and 21 when a thick branch or the like is inserted.

  The crushing chamber 1 and the rotating shaft 2 are provided so as to be substantially horizontal when the crushing apparatus is placed horizontally. However, as another embodiment, the crushing chamber 1 and the rotating shaft 2 may have an inclination such that the downstream side is lowered to some extent when the crushing apparatus is horizontally mounted. The plurality of rotating shafts 2a and 2b are two in this embodiment, but a configuration in which two or more rotating shafts are arranged in parallel and have spiral blades in opposite directions to each other is possible, and a configuration having one spiral blade Is also possible. One rotation 2a of the plurality of rotating shafts is connected to the speed reducer 6, and the speed reducer 6 is rotationally transmitted by the engine 7 and the belt 70, and appropriately reduces the rotation of the engine 7 to rotate the rotating shaft 2a. To be transmitted. One rotating shaft 2a transmits reverse rotation to the paired rotating shaft 2b by a gear 23.

  In this embodiment, the plurality of crushing chambers 1 include three crushing chambers 1a, 2b, and 3c from the upstream side to the downstream side. Is covered. The upper surface of the cylindrical wall surface of each crushing chamber 1 is connected to the left and right wall surfaces or the lower wall surface by bolts or the like so as to be easily detachable. The number of the plurality of crushing chambers 1 may be two or more.

  The first crushing chamber 1a is divided by an upstream side wall plate 11 on the upstream side and a first partition plate 3a provided on the downstream side with the second crushing chamber 1b. It is connected to the lower end of. Similarly, the second crushing chamber 1b is provided by a first partition plate 3a provided upstream with the first crushing chamber 1a, and a second partition plate 3b provided downstream with the third crushing chamber 1c. It is divided. The third crushing chamber 1c is divided by a second partition plate 3b provided on the upstream side with the second crushing chamber 1b, and on the downstream side by a discharge plate 5 having a number of discharge ports 50.

  As shown in FIG. 17, the discharge plate 5 is provided with a passage through which the exhaust gas of the engine 7 can pass. The passage inlet is connected to the exhaust pipe 71 of the engine 7. Accordingly, when the heating temperature is insufficient with only the frictional heat of the object to be crushed, it is possible to heat with the exhaust gas, and it is not necessary to use electricity such as an electric heater. FIG. 16 shows an example in which a passage through which exhaust gas can pass is provided in the partition plate.

Two rotating shafts 2a, 2b penetrate the respective chambers of the first crushing chamber 1a, the second crushing chamber 1b, and the third crushing chamber 1c in parallel, and the two rotating shafts 2a, 2b spiral with each other. The spiral blades 20 and 21 that are opposite to each other and overlap each other with a constant blade width are fixed to the shaft. The pitch P of the spiral blade is larger than the spiral blades 20 and 21 provided in the crushing chamber 1 positioned on the relatively downstream side as the spiral blades 20 and 21 provided in the crushing chamber 1 located on the upstream side. Accordingly, the pitch Pa of the first spiral blades 20a and 21a disposed in the first crushing chamber 1a is larger than the pitch Pb of the second spiral blades 20b and 21b disposed in the second crushing chamber 1b on the downstream side. . Similarly, the pitch Pb of the second spiral blades 20b and 21b disposed in the second crushing chamber 1b is greater than the pitch Pc of the third spiral blades 20c and 21c disposed in the third crushing chamber 1c on the downstream side. large. When the number of crushing chambers is N, the pitch P of the spiral blades 20n and 21n disposed on the most downstream side is the smallest.

  The number of the crushing chambers 1 should just be two or more, and the pitch of the spiral blade 3 located in each crushing chamber 1 should just become small as it goes downstream from upstream. The first spiral blades 20a, 21a located in the first crushing chamber 1a on the most upstream side have crushing and / or scraping action and have a notch 200 as shown in FIG. FIG. 14 is a side explanatory view of the second spiral blades 20b and 21b located in the second crushing chamber 1b or the third spiral blades 20c and 21c located in the third crushing chamber 1c.

  Each spiral blade 20, 21 is formed and disposed so as to be rotatable substantially in parallel and close to the upstream-side wall surface 33 of each partition plate 3 at its downstream end face.

  In the embodiment of the present invention, the partition plate 3 has two types of partition plates because there are three crushing chambers 1. That is, the partition plate 3 includes a first partition plate 3a provided between the first crushing chamber 1a and the second crushing chamber 1b, and a second partition plate 3b provided between the second crushing chamber 1b and the third crushing chamber 1c. Consists of.

Each of the partition plates 3a and 3b passes between the chambers above the shaft holes 32 and 32, and the shaft holes 32 and 32 through which the rotation shafts 2a and 2b penetrate at positions corresponding to the two rotation shafts 2a and 2b, respectively. It has mouths 30a and 30b. Furthermore, each partition plate 3a, 3b is provided with unevenness 31 for wear of the object to be crushed on the wall surface 33 directed in the upstream direction. In this embodiment, the crushing object wear irregularities 31 are formed by a large number of slanted right and left grooves on the wall surface 33. In addition, a large number of slanted left and right linear protrusions, lattice-shaped grooves or linear protrusions, A protrusion or a hole, or a shape in which these are mixed may be used.

  The inter-chamber passage port 30 is provided in the second partition plate 3b located relatively downstream as the first inter-chamber passage port 30a provided in the first partition plate 3a whose opening area is located on the upstream side. It is larger than the second chamber passage port 30b. Further, each inter-room passage opening 30 has an opening area in which the opening area on the downstream side is wider than the opening area on the upstream side in the thickness of the partition plate 3 as shown in the cross-sectional view of FIG. is doing.

  In the embodiment shown in FIGS. 4 and 5, the opening shape of the inter-room passage port 30 and the position of the partition plate 3 are the opening areas of the first partition plate 30 a and the second partition plate 30 b in the first partition plate 30 a. Although large, the opening shape is almost square.

A wall surface 33 facing in the upstream direction of each partition plate 3 is provided so as to be close to the downstream end of each spiral blade 20, 21 installed and positioned in each crushing chamber 1. The object to be crushed is pressed by the spiral blades 20 and 21, and the unevenness 31 for the object to be crushed on the wall surface 33 facing the upstream direction of each partition plate 3 and the downstream end of each spiral blade 20 and 21 approach each other. When entering the narrow gap, the spiral blades 20 and 21 are crushed and worn by the rotation of the spiral blades 20 and 21.

  A discharge plate 5 is provided on the downstream side of the third crushing chamber 1c provided on the most downstream side. As shown in FIG. 6, the discharge plate 5 has shaft holes 52, 52 through which the rotation shafts 2 a, 2 b penetrate at positions corresponding to the two rotation shafts 2 a, 2 b, and around the shaft holes 52, 52. There are as many outlets 50 as possible. Further, the discharge plate 5 is provided with a crushing object wear unevenness 51 on a wall surface 53 directed in the upstream direction. In this embodiment, the unevenness 51 for wearing the object to be crushed comprises a large number of slanted right and left grooves on the wall surface 53. In addition, a large number of slanted left and right linear protrusions, lattice-shaped grooves or linear protrusions, Small protrusions or holes, or a mixture of these may be used. Each discharge port 50 has an opening area in which the opening area on the downstream side is wider than the opening area on the upstream side in the thickness of the discharge plate 5.

  Another embodiment of the discharge plate 5 is shown in FIG. Many discharge ports 50a of the discharge plate 5 in FIG. 11 are provided on the wall surface 53 facing the upstream direction. The object to be crushed is pressed by the spiral blades 20, 21, and the crushed object wear unevenness 51 of the wall surface 53 facing the upstream direction of the discharge plate 5 and the downstream end of each spiral blade 20, 21 are close to each other. When entering the narrow gap, the spiral blades 20 and 21 are crushed and worn by rotation.

  The third spiral blades 20c and 21c on the most downstream side are formed and arranged so as to be rotatable in parallel with and close to the wall surface 53 facing the upstream direction of the discharge plate 5 at the downstream end face thereof.

Another embodiment of the opening shape of the inter-room passage port 30 and the position on the partition plate 3 is shown in FIGS. 7 is a trapezoidal opening that is provided above and below the shaft holes 32 and 32 and has a slightly narrow upper and lower end, and an upstream opening in the thickness of the partition plate 3. The sides of the opening in the rotation direction of the rotary shafts 2a and 2b are formed so as to be oblique so that the opening area on the downstream side is larger than the area.

  8 has a trapezoidal opening 301a with a slightly narrow upper and lower ends provided above the shaft holes 32 and 32 and an arc side provided below the shaft holes 32 and 32. And an opening 301b having the same. In the opening 301a, the sides of the openings in the rotation direction of the rotary shafts 2a and 2b are slanted so that the opening area in the downstream portion is wider than the opening area on the upstream side in the thickness of the partition plate 3. Forming.

  9 is a rectangular opening 302 that is provided above and below the shaft holes 32 and 32 and opens from the shaft hole to the periphery, and is upstream of the thickness of the partition plate 3. The sides of the openings in the rotation direction of the rotary shafts 2a and 2b are formed so as to be oblique so that the opening area on the downstream side is wider than the opening area on the side.

  The inter-room passage port 303 of the partition plate 3 shown in FIG. 10 is provided with a rectangular opening 303a provided above the shaft holes 32, 32 and extending from the shaft hole to the periphery, and an arc provided below the shaft holes 32, 32. The opening 303b has a side. The opening 303a is formed by slanting the sides of the openings in the rotation direction of the rotation shafts 2a and 2b so that the opening area on the downstream side is wider than the opening area on the upstream side in the thickness of the partition plate 3. Forming.

  Next, operation | movement is demonstrated about the crushing apparatus of embodiment of this invention. When the engine 7 is driven, the rotation of the engine 7 is transmitted to the speed reducer 6 by the belt 70, and the rotation appropriately decelerated by the speed reducer 6 is transmitted to the rotating shaft 2 a, and the pair of rotating shafts 2 b are connected via the gear 23. Are rotated in the reverse direction, and the rotary shafts 2a and 2b rotate in the reverse direction toward each other. Plant materials such as thinned timber that is to be crushed, branches and leaves of cut wood, bark, and bamboo shoots such as bamboo, firewood, and firewood are mainly introduced from the raw material input 4. At this time, since there is a danger prevention bar 40 even in the case of a relatively thick branch or the like, the upper end portion of the thick branch or the like due to the lower part starting to be caught in the spiral blades 20 and 21 at the time of insertion makes a large or abnormal movement. Prevent the danger of workers.

The material to be crushed enters the first crushing chamber 1a from the raw material inlet 3, and is crushed by the first spiral blades 20a and 21a. Since the first spiral blades 20a and 21a have the cutting blades 200, the first spiral blades 20a and 21a are crushed larger because they have a relatively large pitch Pa while being cut. The object to be crushed is pushed and flowed downstream by the spiral blade while being crushed, and is narrowed in a narrow gap where the upstream facing wall surface 33 of the first partition plate 3a and the downstream end face of the first spiral blades 20a, 21a are close to each other. Rarely, the first spiral blades 20a and 21a are worn and defibrated by the crushing object wear irregularities 31 while being pressed by the rotation of the first spiral blades 20a and 21a. The object to be crushed sequentially moves from the inter-chamber passage port 30a to the outermost chamber 1b while being worn and defibrated. At this time, since the inter-chamber passage port 30a has an opening area having a wider opening area on the downstream side than the opening area on the upstream side in the thickness of the partition plate 3,
It is hard to clog and easily moves downstream.

  The material to be crushed in the second crushing chamber 1b is crushed by the second spiral blades 20b and 21b having a relatively small pitch P. Since the pitch Pb is relatively small, the second spiral blades 20b and 21b are compressed and crushed to a smaller size. The object to be crushed is pressed and crushed by the spiral blade while being compressed and crushed, and the narrow gap between the upstream wall surface 33 of the second partition plate 3b and the downstream end surfaces of the second spiral blades 20b and 21b is close. The crushed object wear irregularities 31 are worn and defibrated while being pressed by the rotation of the second spiral blades 20b and 21b. The object to be crushed sequentially moves from the inter-room passage port 30b to the third crushing chamber 1c while being worn and defibrated. At this time, the inter-chamber passage opening 30b has a larger opening area on the downstream side than the opening area on the upstream side in the thickness of the partition plate 3, and therefore moves to the downstream side with less clogging. It's easy to do.

The material to be crushed in the third crushing chamber 1c is the third spiral blade 20c having the smallest pitch P,
It is crushed by 21c. Since the third spiral blades 20c and 21c have a smaller pitch Pc, the third spiral blades 20c and 21c are crushed to a smaller size while being highly compressed. The object to be crushed is pushed and flowed downstream by the spiral blade while being compressed and crushed, and is sandwiched between the upstream-side wall surface 53 of the discharge plate 5 and the downstream end face of the third spiral blades 20c and 21c. The crushed object wear irregularities 31 are worn and defibrated while being pressed by the rotation of the third spiral blades 20c and 21c. The objects to be crushed are sequentially discharged from the discharge port 50 to the outside while being worn and defibrated. At this time, the discharge port 50 has a larger opening area on the downstream side than the opening area on the upstream side in the thickness of the discharge plate 5, so that the discharge port 50 is less likely to be clogged and easily moves to the downstream side. Easy to discharge.

Further, the exhaust plate 5 is heated by passing the exhaust gas of the engine through the inside of the discharge plate 5, so that the temperature of the object to be crushed can be sufficiently heated, and sterilization and insecticide without being affected by the outside air temperature. The effect of can be exhibited effectively.

This invention mainly crushes plant materials such as thinned timber, branches and leaves of cut wood, bark, and bamboo shoots such as bamboo, firewood, and firewood, and presses and wears and defibrates those plant fibers. It can be naturally sterilized by the heat generated during production and the exhaust heat of the engine, so that it can be used as a substitute for livestock litter and soil weed prevention as a wet powdery plant material. It can be used as a raw material or a raw material for additional fertilization In addition, since the material of the material to be crushed is plant material, it returns to the soil by corrosion, so it conforms to the natural circulation of substances and contributes to ecology.

Recently, a large amount of fallen timber caused by natural disasters such as typhoons and timber that flows to dams can be expected to be used for these treatments.

The top view of the crushing device which is one embodiment of this invention The front view of the crushing apparatus which is one embodiment of this invention The side view seen from the upstream of the crushing device which is one embodiment of this invention The figure which showed embodiment of the partition plate of this invention, and looked at the 1st partition plate from the upstream side The figure which showed embodiment of the partition plate of this invention, and looked at the 2nd partition plate from the upstream side The figure which showed embodiment of the discharge plate of this invention, and looked at the discharge plate from the upstream side The figure which showed another embodiment of the partition plate of this invention, and looked at the partition plate from the upstream side The figure which showed another embodiment of the partition plate of this invention, and looked at the partition plate from the upstream side The figure which showed another embodiment of the partition plate of this invention, and looked at the partition plate from the upstream side The figure which showed another embodiment of the partition plate of this invention, and looked at the partition plate from the upstream surface The figure which showed another embodiment of the discharge plate of this invention, and looked at the discharge plate from the upstream side Horizontal sectional view of the partition plate of the present invention The figure which looked at the 1st spiral blade of this invention from the upper stream side The downstream spiral blade of the present invention as viewed from the upstream side Plan view of raw material inlet of this invention Sectional drawing of the partition plate which provided the passage of the exhaust gas of the engine of this invention Sectional view of the exhaust plate provided with the exhaust gas passage of the engine of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crushing chamber 1a 1st crushing chamber 1b 2nd crushing chamber 1c 3rd crushing chamber 2 (2a, 2b) Rotating shaft 20 Spiral blade 21 Spiral blade 20a, 21a 1st spiral blade 200 Notch part 20b, 21b 2nd spiral blade 20c 21c Third spiral blade 3 Partition plate 3a First partition plate 30a First chamber passage port 3b Second partition plate 30b Second chamber passage port 300 Chamber passage port 301 Chamber passage port 302 Chamber passage port 303 Chamber Intermittent port 31 Unevenness for abrasion of object to be crushed 32 Shaft hole 33 Upstream side wall surface 4 Raw material input port 40 Danger prevention bar 5 Discharge plate 50 Discharge port 51 Unevenness for crushing chamber abrasion 52 Shaft hole 53 Upstream side wall surface 6 Reducer 7 Engine 70 Belt 71 Exhaust pipe 8 Frame stand 80 Wheel

Claims (5)

  A crushing chamber provided in the longitudinal direction of the rotating shaft, a partition plate provided between the crushing chambers and having an inter-chamber passage, and an upstream portion of a flow in which a material to be crushed moves by rotation of a spiral blade provided on the rotating shaft In a crushing apparatus having a raw material charging port provided in a discharge port provided in a downstream portion of a flow in which a material to be crushed moves by rotation of a spiral blade provided on the rotating shaft, an engine serving as a driving power source for the apparatus A crushing apparatus, wherein the discharge plate provided with the discharge port and / or the partition plate are heated by exhaust heat of the gas.   The crushing object according to claim 1, wherein a crushing object wear unevenness is provided on a discharge plate and / or a partition plate facing upstream of a flow in which the crushing object moves by rotation of a spiral blade. apparatus.   The crushing apparatus according to claim 1 or 2, wherein the pitch of the spiral blades located in the plurality of crushing chambers is a spiral blade having a smaller pitch in the crushing chamber on the downstream side than in the crushing chamber on the upstream side.   The downstream end of each spiral blade provided on the rotating shaft and located in each crushing chamber is adjacent to the partition plate and the discharge plate or one of the upstream facing walls, respectively. Item 4. The crushing apparatus according to Item 3. The inter-room passage opening of the partition plate provided between the crushing chambers has an opening area in which the opening area on the downstream side is wider than the opening area on the upstream side in the thickness of the partition plate The crushing apparatus according to claim 1, claim 2, claim 3, or claim 4, which is a mouth.

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