JP2005186003A - Treatment object crushing mechanism of organic waste treatment drum - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably crush large bulky treatment objects by the treatment object crushing mechanism of an organic waste treatment drum. <P>SOLUTION: The treatment object crushing mechanism is an improved mechanism comprising a hollow drum 2 which is supported transversely in rotatable manner and in which water-containing organic wastes are thrown, rotated, and discharged to an outlet side; screens 14 installed circumferentially in a plurality of rows and extruded in the inner circumference of the drum 2 at proper intervals so as to bring treatment objects rotated and contrariwise rotated and falling following the rotation of the drum 2 into contact with and further so as to pass and drop the objects through; and auxiliary screens 21 each installed between tip ends of neighboring screens 14 and each made of a member with a linear, rod, lattice, or net-like shape for receiving the treatment object rotated and dropped in the drum 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a treated material grinding mechanism of an organic waste treatment drum for producing organic fertilizer from livestock droppings such as cow dung and organic waste such as sewage sludge.

Conventionally, a treated product made of organic waste containing water such as animal manure and sewage sludge is put into a hollow drum, the drum is rotated, the organic waste is stirred and mixed, and air is contained inside, and partly Or the apparatus which processes by making the whole agglomerate etc. is well-known from the following patent document 1.
This device increases the air content in the processed product by dropping the processed product that falls in the drum in reverse while contacting the screen projecting inwardly on the inner peripheral wall. It is characterized by promoting the next fermentation process by making it.
Japanese Patent No. 3035290

When the processed product is relatively soft and the baby boom is small, such as livestock excreta, the baby boom is crushed by rotating the drum. Mix well.
On the other hand, for example, a processed product having a large baby boom such as sewage sludge is not sufficient for grinding the baby boom, containing air, or mixing the conditioning material and the promoter, even if the drum rotates. There are drawbacks such as leaving fermentation defects in the fermentation process.

  In order to solve the above-mentioned problems, the treated product pulverizing mechanism of the present invention firstly rotates a hollow drum 2 that rotates by inserting and rotating organic waste containing moisture from the input side and discharging it to the discharge side. In the inner periphery of the drum 2, a processing object that falls by reversing or rolling inside with the rotation of the drum 2 is brought into contact with the drum 2, and further, a screen 14 that passes through and drops is processed inward. In a mechanism provided in a plurality of rows at appropriate intervals in the circumferential direction, a line that is attached between the tips or tip sides of the screen 14 and receives and pulverizes the processed material that rolls or falls within the drum 2. Auxiliary screen 21 made of a member formed in the shape of a rod, a bar, a lattice, or a net is provided.

  Second, the auxiliary screen 21 is attached between the front end portions of the adjacent screens 14.

  Third, the auxiliary screen 21 is formed in a polygonal cylindrical shape substantially concentric with the drum 2.

  Fourth, the auxiliary screen 21 is characterized by being made of a wire wound in a hook shape so as to connect the front end portions of the screen 14.

  Fifth, the auxiliary screen 21 is detachably attached to the screen 14.

According to the pulverization mechanism of the present invention configured as described above, the drum rotation after the processing product is charged has high pulverization performance even for a processing product containing a relatively large nodule such as sewage sludge, There is an advantage that the degree of mixing with the adjusting material or the like is increased.
In addition, the auxiliary screen forms a polygonal bowl or cylinder at the center of the drum, so that the processed material comes into contact with the outer peripheral side and the inner peripheral side of the cylindrical part in the process of rolling or dropping. Further, there is an effect that the powder is repeatedly pulverized.

  Embodiments of the present invention shown in the drawings will be described below. 1 to 3 are an overall side view of a processing apparatus showing an embodiment of the present invention, a discharge side end view of a drum, and a main part extraction perspective view showing a crushing mechanism inside the drum.

  In the processing apparatus, a cylindrical drum 2 (for example, D = 1980, L = 3570) is installed substantially horizontally in the longitudinal direction on a frame 1 that forms a substantially rectangular frame in plan view, and a predetermined front and rear are disposed on the outer periphery thereof. A plurality of rolling rings 3 are mounted at intervals, and each ring 3 is rotatably supported by left and right rotating rollers 4 supported on the frame 1.

  At least one of the left and right rows of the rotation rollers 4 is coaxially connected to the drive shaft 6 and driven to rotate at the same speed, and the shaft end thereof is connected to a motor (not shown) side such as a motor. An input section such as a chain wheel 7 is provided, and by rotating the roller 4, the drum 2 is rotated slowly (for example, 2 rpm) so that forward / reverse switching is possible.

  At the front and rear ends of the drum 2, an input frame 9 for attaching a processing hopper 8 and a discharge frame 12 for attaching a discharge port 11 are erected so as to cover the front and rear ends of the drum, respectively. A conveyor 13 for conveying the discharged processed material to the next process is installed below the section.

  As shown in the drawing, on the inner peripheral surface of the drum 2, a screen 14 having a predetermined height facing inwardly stands at an interval of 120 ° so as to be directed substantially in the center direction. Reference numeral 16 denotes an attachment seat for attaching the screen 14 to the peripheral wall. As shown in the figure, the screen 14 is formed in a lattice shape having a protrusion height of 500 mm, a lattice spacing of 200 × 115 (mm), and a gap of 145 mm with respect to the peripheral surface using, for example, a rod-shaped material. In the same way as the drum rotation, it receives and collides with the processed material that falls in reverse with the rotation of the drum, so that it falls down while containing air in the processed material. It may be a plate.

  Further, a gap is provided between the lower end of the screen 14 and the inner peripheral surface of the drum. For example, the processed material that has fallen on the peripheral surface during the drum rotation rolls in contact and at least a part thereof contains air, for example, 10 This is to give a condition for aggregating to about 50 mm and promoting subsequent fermentation. The screens 14 may be integrally formed with each other, but are divided (three divisions) as shown in the drawing for convenience of attachment and stirring efficiency of the processed material, and are attached to each.

  A guide blade 17 (guide section) in a spiral direction made of a plate material having a height of 150 mm, for example, is positioned near the rear of the screen in the forward rotation state between the screen rows, and the drop position of the workpiece to be inverted and dropped. Is installed. The guide vanes 17 are fixedly attached by joining a plurality of (three) plate members in the length direction and welding or fastening them with bolts.

  This guide vane 17 is inclined in a direction to send the processed material that has fallen from above at the normal rotation of the drum or passed through the screen to the rear from the moment when it is received by the lower peripheral surface, and is about the inner peripheral surface between the screen rows. A plurality of (three in this example) are intermittently provided in parallel within a width of about ½. The remaining portion between the screen rows is formed with a non-guide space 18 having a constant width (without the guide vanes 17) in the arcuate direction, and freely rolls along the inner peripheral surface of the drum on which the workpiece rotates. It has a structure to do.

  Therefore, when the drum 2 is rotated forward, the processed material dropped on the lower inner peripheral surface is guided rearward by the guide blade 17 (at least not sent in the discharge direction), and after rolling or stirring, While rolling and rolling into the non-guide space 18, stirring and agglomeration are performed. As a result, stirring and agglomeration of the processed material are promoted by the guide blades 17, and troubles such as poor stirring due to at least the entire processed material being accumulated in the direction of the discharge port 11 can be prevented.

  Further, the guide vanes 17 can be set lower than the gap below the screen 14 so that one end is inserted into the gap and crossed with the screen 14. In this case, the screen 14 is rotated during rotation. There exists an advantage which can move the processed material which falls along both sides to the front or back early. In addition, a gap of, for example, about 30 to 100 mm can be provided between the outer peripheral end of the guide vane 17 and the drum inner peripheral surface. When this gap is provided, the processed material during normal rotation is stirred by the guide vane and discharged. While being prevented from moving to the side, a part of the roller falls while directly falling on the drum peripheral surface, rolls while passing through the gap, and is aggregated.

  In addition, a plurality of (six) discharge blades 19 made of a plate member having a height approximately the same as the screen 14 and a length of about 970 mm are disposed at equal intervals (every 60 °) at the discharge side end in the drum 2. And a guide blade 17 that pushes the processed material back to the input end side during forward rotation and discharges it during reverse rotation, and has a helical inclination angle of substantially the same angle and direction.

  Moreover, three of the discharge vanes 19 are arranged so that their rear ends are close to the tip of the corresponding guide vanes 17 so as to discharge the processed material in linkage with the guide vanes 17 smoothly when the drum reverses, or at the time of reverse rotation. It is desirable to be configured to overlap the rear position, and if the adjacent gaps between the discharge vanes 19 are too small, scraping failure at the time of discharge operation will be caused. Therefore, as shown in FIG. It is desirable.

  When processing a processed object with the drum configured as described above, during normal rotation, the processed object is rotated while being uniformly distributed over the entire surface so as not to be shifted to the discharge side by natural movement, and discharged after the processing is completed. In some cases, it is possible to discharge quickly and with no residual discharge into the drum by the action of the guide vanes 17 and the discharge vanes 19 in spite of substantially the same reverse rotation speed.

  Also, lattice frame-shaped auxiliary screens 21 as shown in FIGS. 2 and 3 are attached from the three directions between the tip ends of the three screens 14 projecting inward from the inner periphery of the drum. The auxiliary screen 21 is detachably bolted and fixed by, for example, a mounting plate 22 between three screens at three positions on the drum axis. That is, the auxiliary screen 21 as a whole is concentric with the drum 2, and a triangular cylindrical or bowl-shaped screen 23 is formed at the center of the drum 2.

  With the above configuration, when the drum 2 rotates in a state in which the processed product is charged, the processed product is crushed by being scraped up and inverted and dropped by the screen 14 in addition to the above-described operation in the front-rear feed direction. At this time, further, the processed material comes into contact with each grid-like wire or bar from the outer peripheral side of the bowl-shaped screen 23, and the processed material entering the bowl also comes into contact again from the inside of the bowl-shaped screen 23. , Repeatedly pulverized.

  FIG. 4 shows another example of the bowl-shaped screen 23. In this example, the grids of other screens 14 adjacent to the inward grid part of the screen 14 shown in the figure from the inlet side to the outlet side. An auxiliary screen 21 between adjacent screens 14 in the circumferential direction and a cylindrical screen 23 in the axial direction are formed by spirally winding a wire 24 such as a wire or steel wire while sequentially shifting the pitch by one pitch. To do.

  In the example shown in the figure, a cylindrical screen 24 is formed by winding and fixing a total of three wire rods 24a, 24b, and 24c in a spiral manner in accordance with the number of inward lattices of the screen 14 and the number of stages of the screen 14. Yes. Each of the wires 24a to 24c does not need to be a single wire, and may be divided in the middle, and the winding pitch in the spiral direction is not limited to the pitch of the inward lattice, and the type and nature of the processed material It can be changed freely according to. Other configurations and operations are the same as those shown in FIGS.

  The present invention can be used as a pretreatment device for moisture adjustment and the like when organic waste such as livestock excrement, raw garbage, and sewage treatment sludge is treated by a method such as fermentation.

1 is an overall side view of an organic waste treatment apparatus of the present invention. It is a rear view which shows the discharge side end surface of a rotating drum. It is the perspective view which extracted the principal part of the grinding | pulverization mechanism of this invention. It is the perspective view which extracted the principal part of the crushing mechanism which shows other embodiment of this invention.

Explanation of symbols

2 Drum 14 Screen 21 Auxiliary Screen 22 Mounting Plate 23 篭 (Tube) Screen 24 Wire

Claims (5)

  A hollow drum (2) for discharging organic waste containing moisture from the input side and rotating it and rotating it to the discharge side is rotatably supported in the lateral direction, and the drum (2) is disposed on the inner periphery of the drum (2). The processing object falling by reversing or rolling inside with the rotation is brought into contact, and further, the screen (14) to be processed by dropping it downward is protruded inwardly at appropriate intervals in the circumferential direction. In a mechanism provided in a plurality of rows, a linear, rod-like, or grid-like shape that is attached between the tips or tip sides of the screen (14) and receives and pulverizes the processed material that rolls or falls in the drum (2). An organic waste processing drum treatment product grinding mechanism provided with an auxiliary screen (21) made of a net-like member.   The treatment crushing mechanism of the organic waste treatment drum according to claim 1, wherein the auxiliary screen (21) is attached between the front end portions of the adjacent screens (14).   The treated material grinding mechanism of the organic waste processing drum according to claim 1 or 2, wherein the auxiliary screen (21) is formed in a polygonal cylindrical shape substantially concentric with the drum (2).   The treated material grinding mechanism for an organic waste treatment drum according to claim 1, 2 or 3, wherein the auxiliary screen (21) is made of a wire wound in a hook shape so as to connect the tip of the screen (14).   The treated material crushing mechanism of the organic waste processing drum according to claim 1, 2, 3, or 4, wherein the auxiliary screen (21) is detachably attached to the screen (14).

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