JPH1034387A - Screw dehydrater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily discharge a dehydrated solid caked by a fibrous material in a screw dehydrater. SOLUTION: This dehydrater is provided with a screw 7 in the inside of a screen cylinder 6 and a pressing cover 10 in an opening part 11 of the screen cylinder 6. In this case, a pressing face 12 of the pressing cover 10 is formed into a conical shape, when a solid matter is hardly discharged from the clearance of the opening part 11 and the load of the screw 7 becomes large, the pressing cover 10 is rotated in the rotational direction of the screw 7 while adjusting the clearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw dewatering machine for dewatering slurry such as garbage crushed by a disposer and discharging it as a solid.

[0002]

2. Description of the Related Art Such a screw dewatering machine has a screw provided inside a screen cylinder fixed in a machine frame, and a push lid pressed by a spring at an opening at an upper portion of the screen cylinder. The slurry supplied from is compressed and dehydrated in the screen cylinder to be solidified and discharged from the gap that has pushed up the upper lid, but the solid matter solidified in a lump by the fibrous material in the slurry is There is a drawback that it is not discharged from the gap of the opening, it is further compressed and solidified in the screen cylinder, the rotation of the screw is prevented, and the drive motor is burned, and the repair is troublesome. Instead of pressing the push lid directly with a coil spring, attach it with a hinge, and attach it to the tip of a lever protruding on the opposite side to the push lid across the hinge and to the fixed part above the push lid. A tension spring is attached between the locking pin and the push lid to press the push lid, and when the push lid is opened, the pressing force of the push lid by the tension spring is reduced to facilitate the discharge. .

[0003]

In the case where the solid is pushed up and discharged by the pushing force of the screw as described above, since the gap is adjusted by the movement of the pushing lid due to the discharge, when the push lid is pushed up. In addition, a considerable effect can be obtained by reducing the pressing force of the spring, but if strong and long fibrous materials such as cabbage are mixed and hardened, simply reducing the pressing force of the push lid will result in a narrow discharge. If the gap cannot be sufficiently discharged from the outlet and is excessively pushed up to increase the gap, there is a problem that the compressive force of the screw is reduced and dehydration is not sufficiently performed.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a pressing surface for contacting a solid material of a push lid is formed in a conical shape, a contact surface with the solid material is inclined to facilitate discharge, and a load of a screw is reduced. When it becomes excessive, the gap between the discharge ports is adjusted and the push lid is rotated in the rotation direction of the screw.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A push lid provided at an upper opening of a screen cylinder of a screw dehydrator has a conical pressing surface for contacting solids in the screen cylinder, the contact surface is inclined, and the solids are discharged. The support rod of the push lid is rotatably supported, the upper end of the support rod is engaged with a lever that pushes down by a tension spring, and the push lid is pressed against the opening, so that solid matter is not smoothly discharged and the screw is not screwed. When the load increases due to the restraining force, the support rod is rotated in the same direction as the screw, and the pressing surface that contacts the solid matter of the push lid is rotated in the direction of discharge so that discharge can be performed easily. I have to.

[0006]

An embodiment in which this is used for a kitchen waste disposal machine will be described. 1 is a garbage disposal machine, and a disposer 2 inside
The kitchen waste sent with the water from the sink 4 is crushed by the disposer 2, and the garbage is sent to the screw dehydrator 3 to be dewatered to be solidified and discharged. 5 is a machine frame of the screw dewatering machine 3, 6 is a screen cylinder, 7 is a screw, 8 is a feed port, 9 is a drain port, 10 is a push lid provided in the opening 11 at the upper part of the screen cylinder, Pressing surface 1 that contacts object
2 has a conical shape. 13 is a discharge port, 14 is a support rod of a push lid, 15 is a press ring supporting the upper end of the support rod via a bearing, 16 is a lever having one end connected to a fixed portion, and a pin 17 is attached to the press ring 14 with a pin 17. Connected. Reference numeral 18 denotes a tension spring stretched between the lever 16 and the pin 19 of the fixed portion. Reference numeral 20 denotes a hollow gear that surrounds the support rod 14 and is engaged only in the rotational direction by a spline, and meshes with a spur gear 22 that is rotated by a motor 21.

The garbage put into the disposer 2 together with the water is crushed and sent to the screw dehydrator 3 from the inlet 8 and compressed inside the screen cylinder 6 by the rotation of the screw 7 to open the screen cylinder while being dewatered. The push cover 10, which is sent to the portion 11 and pressed by the tension spring 18 via the lever 16, is pushed up and discharged from the gap of the opening 11. Solid matter such as relatively soft leftovers is smoothly discharged from the gap between the openings 11, but when the fiber is mixed and solidified in a lump in the screen cylinder, it is not discharged from the slight gap of the push lid 10, When the push lid is pushed up too much, when the push lid is pushed up too much, the gap between the opening 11 and the push lid 10 becomes large, a large amount of solid matter is discharged, the compressive force by the screw 7 is reduced, and the dewatering effect is reduced. In addition to being reduced, a large amount of waste flows into the outlet 13 and causes clogging, and it is necessary to stop the operation and remove solids. In particular, fibers such as cabbage are likely to agglomerate and hinder the rotation of the screw 7. However, a large load is applied to a drive motor (not shown).

When such a state occurs, it is detected, for example, by an overload applied to the drive motor of the screw 7, and the motor 21 is driven to rotate the hollow gear 20 via the spur gear 22 and engage with the spline. The push lid 10 is rotated in the rotation direction of the screw 7 together with the support rod 14 thus set. For this reason, the opening 1 is assisted by rotating the solid in contact with the pressing surface 12 of the push lid 10 in the discharge direction.
1 makes it easy to discharge and ensures that it is discharged.

The rotation of the support rod 14 is not limited to the rotation by the illustrated hollow gear. For example, a spur gear may be attached to the support rod and engaged with the spur gear 22. Further, as shown in FIG. 2, if radial grooves 23 are radially or spirally formed on the pressing surface 12, the contact portion of the solid material cuts into the grooves, the contact resistance increases, and more effective discharge is performed. Let

[0010]

As described above, according to the present invention, the pressing surface of the push lid in the screw dewatering machine, which comes into contact with the solid matter, is formed in a conical shape, and when an excessive load is applied to the screw without discharging the solid matter, Since the push lid is rotated in the same direction as the screw, even if solid matter mixed with fibrous material solidifies in the screen cylinder and discharge becomes difficult, the push lid is rotated in the same direction as the screw. By doing so, the discharge of solids can be performed smoothly,
There is an effect that the reliability of the screw dehydrator is improved and the work can be performed smoothly. In addition, by providing a groove on the pressing surface of the push lid, the contact resistance with the solid material can be increased, and the discharging force can be increased.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment in which the present invention is used in a kitchen waste disposal machine.

FIG. 2 is a plan view of a pressing surface showing another embodiment of a push cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Garbage processing machine 2 Disposer 3 Screw dehydrator 4 Sink 5 Machine frame 6 Screen cylinder 7 Screw 8 Inlet 9 Drain port 10 Push lid 11 Opening 12 Pressing surface 13 Discharge port 14 Support rod 15 Pressing ring 16 Lever 17 Pin 18 Pulling Spring 19 Pin 20 Hollow gear 21 Motor 22 Spur gear 23 Groove

Claims (2)

[Claims] 1. A screw dewatering machine having a screw inside a screen cylinder, a push lid provided in an opening of the screen cylinder, and discharging dehydrated solid matter from a gap between the opening and the push lid. A screw dewatering machine characterized in that a pressing surface in contact with a solid is formed in a conical shape, and when the load on the screw is increased, the gap is adjusted and the push lid is rotated in the rotation direction of the screw. 2. The screw dewatering machine according to claim 1, wherein a radial groove is provided on a pressing surface of said push lid.