JPH0116521Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a crushing device for crushing industrial waste, municipal garbage, and the like.

(Prior art) As this type of crushing device, for example,
The one described in Japanese Patent No. 126951 is known. This conventional crushing device consists of rotary cutters that are mounted horizontally in parallel in a crushing housing so that they can rotate in an interlocking manner with each other, and the bottom of the outer periphery of the cutter that is parallel to the center of the cutter. The rotary raking drive shaft has circulating raking drive shafts arranged spaced apart from each other from the side part to the upper part, and raking pieces protruding from each outer periphery of the raking drive shafts and arranged spaced apart in the axial direction. A part of the crushed material from the cutters was allowed to fall freely from the removal port between the scraping pieces, while the remaining part was scraped up by the scraping pieces and reintroduced between the rotary cutters.

(Problem to be solved by the invention) In the above-mentioned conventional crushing device, the scraping pieces are constantly rotated in the scraping direction, so for example, waste cloths or fibrous foods that become long and thin after being crushed are circulated and scraped. It wraps around the shaft and remains that way for a long time, and as a result, the removal port becomes clogged, and even those that have already reached the state of being removed have to be scraped up and re-shredded. Moreover, the wrapping caused an overload, resulting in a decrease in crushing efficiency and a shutdown of the operation.

Therefore, the present invention has a scraping piece arranged around the outer circumference of the rotary cutter with a screen function and a re-raking function, and automatically removes the crushed materials wrapped around the circulation scraping drive shaft as necessary. The purpose of the present invention is to provide a crushing device that is designed to prevent overload, properly maintain the screen function, and improve the crushing efficiency as a whole.

(Means for solving the problems) In order to achieve the above object, the present invention takes the following measures. That is, the feature of the present invention is that the rotary cutters 13 are mounted horizontally in parallel in the crushing housing 9 and rotated in a mutually interlocking manner, and the rotary cutters 13 are arranged in a parallel relationship with the center of the cutters. Circulating scraping drive shafts 28 are arranged spaced apart from each other from the bottom to the top of the outer periphery of the cutter, and scrapers are arranged on each outer periphery of the scraping drive shafts 28 and spaced apart in the axial direction. It has a lifting piece 27 and a rotary cutter 13.
In this structure, a part of the crushed material is allowed to fall freely from the removal port 30 between the scraping pieces 27, while the remaining part is scraped up by the scraping pieces 27 and reintroduced between the rotary cutters 13. An overload detection device is provided in the drive device for the circulation scraping drive shaft 28, and when an overload is detected by the detection device, the rotary cutter 13 is automatically stopped, and the circulation scraping drive shaft 28 is moved in the anti-raking direction. The main feature is that a reversal control device is provided to rotate the engine in the opposite direction.

(Operation) The operation of the present invention will be explained with reference to FIGS. 1 and 4. In the present invention, various objects are crushed, and first, the materials introduced from the conveyor 1 into the input hopper 4 are sheared and crushed by the two rotary cutters 13, 13 in the form of a set, and then the scraping means 26 reach the top. This scraping means 26 has a relationship in which the scraping drive shaft 28 and the scraping pieces 27 are spaced apart from each other, so a certain exclusion opening 30 is formed in this part, and therefore, a certain removal opening 30 is formed in this part. The particles that are smaller than the particle size are dropped through the removal port 30. On the other hand, those that do not pass through the removal port 30 are scraped up one after another as the scraping pieces 27 are rotated in the direction of the arrow X in FIG. be done. As a result, it is re-crushed and finally discharged from the discharge port 30.

However, if the scraping piece 27 is constantly rotated in the direction of arrow As a result, the removal port 30 becomes clogged, and even those that have already reached the state of being removed are scraped up and re-shredded. It becomes overloaded, leading to a decrease in crushing efficiency and operation stoppage.

Therefore, in this invention, the circulation scraping drive shaft 28 is made rotatable in the Y direction opposite to the X direction.

That is, as shown in the fourth figure, when the shredded material is wrapped around the circulation scraping drive shaft 28, the drive shaft 28 is reversely rotated to unwind the shredded material. It is carried out independently with the system stopped. As a result, the rotational state of the scraping means 26 becomes completely free of resistance, and the particle size control function of the removal port 30 is always optimized, eliminating unnecessary crushing.

Specifically, the stopping of the rotary cutter 13 and the like and the reversal of the scraping means 26 are carried out by the circulation scraping drive shaft 28.
When the overload detection device installed in the drive device detects an overload on the drive shaft 28, the detection device issues a command to the reverse rotation control device, and the reverse rotation control device that receives the command starts the rotation of the rotary cutter. 13 automatically stops, and the raking drive shaft 28 automatically reverses in the anti-raking direction.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

The items shown in Figures 1 to 3 are transported - crushed -
An overall diagram of a crushing processing device with an unloading function,
In the figure, 1 is an incoming conveyor, 2 is an outgoing conveyor, and a crusher 3 is installed between them.

The crusher 3 has a charging hopper 4 at its upper end, a crushing device 5 connected to the lower part of the hopper 4, and a pedestal 6 at its lower end.

As shown in FIGS. 4 to 6, in the crushing device 5, a crushing housing 9 is formed by having a pair of side frames 7 facing each other, and connecting the upper and lower ends of both frames 7 with a connecting frame 8. An introduction port 10 through which the input hopper 4 communicates is provided at the upper end, a drop port 11 is provided at the lower end, and opening/closing lids 12 are attached to both sides.

13, 13 are a pair of rotary cutters supported between both side frames 7 to be driven within the crushing housing 9; in this case, each cutter main shaft 1
A plurality of center spacers 15 are placed on the outer periphery of 4 and 14.
are arranged and fixed in a row, and a cutter blade 17 with a cutter edge 16 is provided protrudingly between the spacers 15, and a plurality of side blades 18 are arranged between the bottom of each edge 16 and the flange of the center spacer 15. These pair of rotary cutters 13,
13 are mounted in a mutually interlocking manner with their shaft centers in a horizontal and parallel relationship, and the interlocking position is between the tops of each other.

In addition, the drive device includes each cutter main shaft 14, 14.
Gears 19, 19 that mesh with the taken out outer end of the
, and connect the motor to the reducer (not shown).
The power guided through the gears is transmitted to both gears 19, 19 via a pair of chain couplings 20. In this case, the rotary cutter 13 on the left side of FIG. 5 is on the high speed side and the other is on the low speed side.

Reference numeral 21 denotes a rotary scraper that is mounted parallel to the outer shoulder of each rotary cutter 13. The scraper 21 has a rotary cylinder 23 fixed to the outer periphery of a scraper support shaft 22, and a plurality of scraper pieces 24 on the outer periphery of the rotary scraper 21.
It is configured by installing and deploying the following. In this case, the scraper 21 forms a combination with the rotary cutter 13 and is rotated in the same direction. Therefore, a chain sprocket 25 is attached to each scraper support shaft 22 and each cutter main shaft 14, and a chain sprocket 25 is attached between them. It is configured to be interlocked with a stretched chain (not shown).

On the other hand, 26 is a disk-shaped lifting piece 27...
A large number of scraping means are arranged around the outer periphery of the circulation scraping drive shaft 28, and these are arranged in a U-shaped manner parallel to each other, extending from the outer periphery of the bottom side of both rotary cutters 13 to the outer periphery of the rotary scraper 21. are arranged in Since the scraping piece 27 and the scraping drive shaft 28 are spaced apart from each other, certain exclusion ports 30 are formed in these parts. A chain sprocket 29 serves as a driving means for the lifting drive shaft 28.
It is equipped with Incidentally, FIG. 6 31 shows a gear for driving the raking means 26.

Power is distributed to this gear 31 from the motor for driving the cutter main shaft 14, or power is transmitted from an independent motor separate from the motor.

An overload detection device is provided within the drive device for the raking drive shaft 28. This detection device may be of any known type, such as one that detects the rotational speed and determines overload when the rotational speed decreases, or one that detects a change in the motor load power source and determines overload. It may be hot.

The cutter main shaft 14 and the scraping drive shaft 2
A reversal control device is provided in the drive device 8, and this reversal control device stops the cutter shaft 14 and reverses the raking drive shaft 28 in response to an overload signal from the overload detection device. It is. Specifically, when the drive motor is common, a clutch is interposed in the power transmission system of the cutter shaft 14, and the clutch is disconnected to stop the rotation of the cutter shaft 14 and to transfer the power of the scraping drive shaft 28. Known means such as providing a reversing gear mechanism in the transmission system or rotating the motor in reverse are employed. If the drive motor is independent and individual, the above stop,
Control of reversal becomes easier.

The shape of the scraping piece 27 may be a star shape or other shape, and the scraping piece 27 may be provided with a rotary cutter 13 or a rotary scraper 2.
1 is sometimes referred to as Irigumijo. Furthermore, in order to accurately and quickly deal with overload in the housing, a rotation sensor (not shown) is placed in the front stage of the reducer instead of in the rotation system after deceleration, so that it can be stopped in conjunction with it most quickly. In some cases, the crushing device is protected by incorporating a thermosensor into the housing and making it possible to stop the crushing device in conjunction with or independently from the housing. In this case, the thermosensor is arranged at the position indicated by t in FIG. 4 to reduce detection errors.

(Effect of the invention) According to the invention, the shredded material wrapped around the circulating raking drive shaft with raking pieces arranged around the outer circumference of the rotary cutter with a screen function and a re-raking function can be removed as needed. This prevents overload, maintains the screen function properly, and improves the overall crushing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view of the entire crushing device showing an example of this invention, FIG. 2 is a plan view thereof, FIG. 3 is a side view of the crushing device shown in FIG. 1, and FIG. 4 is a half-vertical front view of the crushing device.
FIG. 5 is a half-transverse plan view thereof, and FIG. 6 is a half-longitudinal side view thereof. 3... Crushing machine, 5... Crushing device, 9... Crushing housing, 13... Rotary cutter, 27... Scraping piece, 28... Circulating scraping drive shaft, 30... Exclusion port.

Claims (1)

[Claims for Utility Model Registration] Rotary cutters 13 are mounted horizontally in parallel in the crushing housing 9 and rotated in a mutually interlocking manner, and rotary cutters 13 are mounted outside the cutter in a parallel relationship with the center of the cutter. Circulating scraping drive shafts 28 arranged spaced apart from each other from the bottom side to the top of the periphery, and scraping pieces 27 protruding from each outer periphery of the scraping drive shafts 28 and spaced apart in the axial direction. A part of the crushed material from the rotary cutter 13 can be freely dropped from the removal port 30 between the scraping pieces 27, while the remaining part can be dropped from the scraping piece 2.
In the configuration configured to be reintroduced between the scraping rotary cutters 13 in step 7, an overload detection device is provided in the drive device of the circulation scraping drive shaft 28, and when an overload is detected by the detection device, A crushing device characterized by being provided with a reversal control device that automatically stops the rotary cutter 13 and reversely rotates the circulating scraping drive shaft 28 in the anti-scuffing direction.