JPS643458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a filtration device, and more specifically, to a filtration device for removing and discharging slag mixed into a liquid, such as label scum in the washing liquid of a bottle washing machine. It is related to the device.

[Prior art] To give an example of a conventionally known filtration device, a separation tank is provided which communicates with the washing tank of a bottle washing machine, and a part of the drum with a screen stretched around its outer periphery is washed inside the separation tank. It is installed so that it protrudes from the liquid level into the atmosphere. Then, the cleaning liquid is sucked in from inside the rotating drum through the suction pipe, and the label residue and the like are attracted to the screen by this suction force. Thereafter, air is injected from inside toward the filter dregs that appear in the atmosphere as the rotating drum rotates, and the filter dregs are blown into the discharge chute and discharged from the discharge port below the chute.

In such conventional filtration devices, air for separating the filter dregs from the drum screen is discharged from the chute outlet together with the filter dregs. As a result, steam is released along with the air, resulting in a large amount of heat being dissipated, resulting in a loss of energy.

For this reason, a filtration device has been developed in which an air suction port is installed in the middle of the exhaust chute, and the air is circulated through a conduit, thereby making it possible to circulate the air and suppress the dissipation of heat. This has already been proposed by the applicant.

However, in the structure where the air suction port of the conduit is provided in the middle of the discharge chute as described above, the filter slag falling inside the discharge chute is carried by the flow of air sucked into the conduit and is discharged. There is a risk that the air suction port will be attracted and deposited around the air suction port in the middle of the chute, clogging the air passage, so the air suction port section must be set wide, which increases the size of the device. I was forced to do so.

[Summary of the invention] In view of the above points, the present invention configures the chute itself as a conduit for circulating air, and
A secondary conveying means intersecting with the air flow path is provided in the middle of the flow, and the filter slag separated by the air is forcibly conveyed together with the air, and it is captured by the secondary conveying means and forcibly conveyed to the outside. The present invention aims to provide a filtration device that eliminates the above-mentioned conventional drawbacks.

[Embodiments of the invention] The invention will be described below with reference to the embodiments shown in FIGS. 1 and 2. In the figure, 1 is a filtration device equipped with a separation tank 2 that communicates with a washing tank of a bottle washing machine (not shown), and a rotating drum 4 that is rotationally driven by a drive unit 3 is provided inside the filtration device. . As is well known, the rotating drum 4 is disposed horizontally so that its upper part protrudes above the surface of the cleaning liquid stored in the cleaning tank and the separation tank 2, and The liquid flows through a drum screen stretched over the outer peripheral surface of the rotating drum 4, flows into the drum, and is then sucked out to the outside by a suction pipe (not shown) arranged inside the rotating drum. .

Reference numeral 5 denotes a bottom plate consisting of a trihedron consisting of a bottom surface 5a, a sloped surface 5b, and a vertical surface 5c, and 6 represents an outer wall whose lower end is bent into a U-shape, as shown in detail in FIG. The bent portion 6a is sloped in the longitudinal direction (see FIG. 2), and its bent tip edge 6b is fixed in contact with the lower bent portion of the vertical surface portion 5c of the bottom plate. 7 is the slope part 7
It is a plate body consisting of a vertical surface portion 7b and a vertical surface portion 7b, with both side edges abutting and fixed to the left and right side walls 8 and 9, and the upper edge 7c of the slope portion 7a protrudes above the liquid level of the cleaning liquid. It is disposed near the outer circumferential surface of the rotating drum 4 to constitute a filter dregs discharge chute, with the central portion of the lower surface of the sloped portion 7a in contact with the upper edge 5d of the vertical surface portion 5c of the bottom plate. is set to . Further, the plate body 7 has a vertical surface portion 7b.
is disposed at a position that vertically bisects the space formed between the outer wall 6 and the vertical surface portion 5c of the bottom plate, forming flow paths A and B, and its lower edge 7d forms a bend in the outer wall. It is provided at an angle above and parallel to the portion 6a (see FIG. 2).

As shown in FIG. 4, the left side wall 8 is provided with a hole 8a at a bent portion 6a of the outer wall, and a hole 8b at a flow path B formed by the plate 7. A duct 10 is provided in the hole 8b.
is installed. The other end of the duct 10 is connected to an air intake port 11a of a blower 11 that pressurizes and supplies air to an air outlet (not shown) in the rotating drum 4.

Reference numeral 12 denotes a secondary conveyance means, that is, a screw conveyor, which is provided through a hole 8a in the left side wall and a hole 9a bored in the right side wall 9 so as to block the space inside the bent portion 6a of the outer wall. Its base end is connected to the drive shaft of a motor 13 for rotationally driving the motor 13, and the casing side of the motor 13 is connected to a tube body 1 having a drain hole 14a below.
4 to the left side wall 8. Reference numeral 15 denotes a constrictor tube that is arranged to surround the tip of the screw conveyor 12 and fixed to the right side wall 9 via an attachment tube 16, and has a taper 15a formed on the inner periphery of the tip. It is now possible to add a squeeze to the filter dregs.

In the filtration device of this embodiment configured as described above, the upper opening A' of the flow path A and the air intake port 11a of the blower are connected to the air flow path C of the duct 10, the hole 8b of the left side wall, the flow path B, The screw conveyor 12 is connected through the gap B' between the screw blades 12a and 12a and the flow path A, and the discharge chute is configured to also serve as an air conduit, so that air is transferred from the blower 11 to the air outlet. The opening above when feeding
As shown by the arrows in FIGS. 1 and 2, the air sucked in from A' can not only be forced to circulate in its entirety, but also make it possible to downsize the device. Therefore, when the filter slag is peeled off from the drum screen of the rotating drum 4 by the air, it is sucked together with the air through the opening A' and flows through the flow path A toward the screw conveyor 12. It can be forcibly transported.

At this time, the screw conveyor 12 is operated by the motor 13.
The screw blade 12
a is that the screw slope is always pitch gap
Since the filter slag is rotated so as to block B', the filter slag that has been forcibly conveyed by air up to this screw conveyor 12 is prevented from passing by the screw blades 12a, and is caught up and forced toward the throttle tube. After being conveyed to the constrictor tube 15 and squeezed by the taper 15a
is discharged to the outside from the opening at the tip. The air that carried the filter slag is then passed through the gap between the screw blades.
It passes through B′ and returns to the air inlet side of the blower.
The water released when the filter cake is squeezed flows downward in the longitudinal direction of the bent portion 6a and can be caused to fall through the drain hole 14a of the tube body 14. Therefore, the filtration device of this embodiment also has the effect that the screw conveyor 12 has the function of a filter.

In the above embodiment, a screw conveyor is used as the secondary conveyance means, but the longitudinal slope of the bent portion 6a of the outer wall is horizontal to constitute a waterway, and the water surface of this waterway and the above-mentioned The gap between the plate and the lower edge 7d may be set small so that the filter dregs can be adsorbed by water.

[Effects of the invention] As described above, according to the invention, the chute doubles as a conduit for circulating air, and a secondary conveyance means intersecting with the air flow path is disposed in the middle of the chute, thereby allowing the air to fly. Reliable capture of filter dregs,
A filtration device that can be made smaller can be obtained.

[Brief explanation of drawings]

Fig. 1 is a side view showing a filtration device according to an embodiment of the present invention, Fig. 2 is a partially exploded front view of the filtration device shown in Fig. 1, and Fig. 3 is a diagram illustrating the air passage. A sectional view of the main part, and FIG. 4 is a partial side view for explaining a hole formed in the left side wall. 11...Blower, 11a...Air inlet, A,
B, C... Air flow path, 12... Screw conveyor (secondary conveyance means).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A screen that adsorbs slag, etc. in the washing liquid, a blower that injects air to this screen in the atmosphere to peel off the adsorbed slag, and A chute that sucks air through an opening at one end and forcibly conveys the peeled filter cake along with the air toward the other end connected to the inlet of the blower, and a chute that intersects with the air flow path in the middle of the chute. A filtration device characterized by comprising a secondary conveying means for capturing the filter dregs being provided and forcibly conveying it to the outside. (2) The filtration device according to claim 1, wherein the secondary conveying means is disposed at a bent portion of the air flow path in the chute. (3) The filtration device according to claim 1 or 2, characterized in that a screw conveyor is used as the secondary conveyance means. (4) The filtration device according to claim 3 of the utility model registration, characterized in that the screw conveyor is sloped in the arrangement part and drain holes are bored in the lower part of the screw conveyor where the slag does not enter. (5) The filtration device according to claim 3 or 4 of the utility model registration claim, characterized in that the screw conveyor is provided with a constrictor tube having a tapered inner circumferential portion surrounding the end portion in the conveyance direction. .