JPS602794A - Vacuum dehydrator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum dehydrator used for dewatering paper, cloth, composites thereof, processed products, etc. (hereinafter referred to as webs).

B. Prior art A conventional vacuum dehydrator is equipped with a suction box connected to a blower and having a slit groove on the web transport surface in the transport path of the web, which is a strip of processed material, which is transported by an appropriate means.
The web was dehydrated by applying suction force to the suction box by operating the blower. However, in order to improve the dewatering efficiency with the vacuum dehydrator, it is possible to increase the suction pressure, but increasing the suction pressure increases the tension of the web, and has the disadvantage that the web is sucked into the slit grooves. Ta. Furthermore, when the spray pressure is increased to improve the dewatering efficiency by air jet dewatering (spray dewatering), there is a problem in that the tension of the web becomes thick, similar to vacuum dewatering.

9. OBJECTS OF THE INVENTION An object of the present invention is to provide a vacuum dehydrator capable of improving dewatering efficiency without applying large tension to a web, which is a strip-shaped processed product.

C0 Structure of the Invention The first invention of the present invention provides for a suction box (2) and a spray box (3) to be opposed to each other via the strip-shaped treated material (1) during the transfer route of the strip-shaped treated material (1). It was installed.

A second invention is one in which the suction box (2) and the spray box (3) of the first invention are connected via a separator (13) and a blower (14).

In the third aspect of the present invention, a running section of an endless net conveyor (27) for conveying the strip-shaped processed material (1) is located between the suction box (2) and the spray box (3).

2. Examples 1 to 3 show embodiments of the present invention.

In the figure, (1) is a web that is a strip-shaped processed material that is transferred by an appropriate means, and (2) and (3) are a suction box and a spray box that are installed opposite to each other at predetermined positions on the transfer path of the web (1). , both boxes (2) and (3) have flanges (4a) (4a) (4b) (4b) on the web transfer surface.
A main body (7) (8) having a box-shaped cross section and an air outlet (5) and an air inlet (6);
7) Two slit plates (9) (9) (10) (10) fixed to the flange part (3) (3) (4) (4) of (8)
), and slit grooves (11) and (12) extending in the width direction of the web (1) are formed on their opposing surfaces. (13) is a separator connected to the air outlet (5) of the suction box (2), and (14) is a separator connected to the air inlet (6) of the separator (13) and the spray box (3), respectively. By driving this blower (14) with a suitable means using a blower such as a Roots blower, the suction box (
2), and this suction force dehydrates the contained moisture from the lower surface of the running web (1), and the dehydrated moisture is separated into water and air by the separator (13), and the separated air is Blow box (3) with blower (14)
The hot separation air is blown onto the upper surface of the web (1). (15) (16) is a suction/spray width adjustment mechanism provided at symmetrical positions on both sides of the suction box (2) and spray box (3) in the width direction;
5) (16) is a storage chamber (19) (2
0), and the flexible band-shaped shielding plates (23) (24) wound around the rotating shafts (21) (22) are stored in the storage chambers (19) (20), and the above-mentioned slits Guide grooves (25) (25) (2G) (26) on the opposing inner end surfaces of the plates (9) (9) (10) (10)
are formed respectively, and these guide grooves (25) (25)
(26) In (26), the above-mentioned band-shaped shielding plate (23) (24
) is slidably fitted into the rotating shaft (2).
1) The suction width and the blowout width can be adjusted by rotating (22) manually or electrically and changing the amount of extension of the band-shaped shielding plates (23) and (24) as appropriate. (27) is an endless net conveyor used when it is necessary to transport knitted fabrics with low tension.
is circulated by appropriate means, and its upper running part (2B)
is run between the suction port (2) and the spray box (3). In addition, if it is not necessary to transfer the strip-shaped processed material (1) with low tension, use the above-mentioned Ne Nodokon Hair (2).
7) may be omitted.

Therefore, if the blower (14) is now driven by an appropriate means,
A suction force acts on the suction box 1 to the groove (11) of the suction box (2) through the separator (13), and the running web (1) is suctioned from its lower surface to remove water contained therein. This dehydrated water is separated into water and air by the separator (13), and only the air is sucked into the blower (14) and further sent under pressure to the spray box (3). The temperature of the separated air increases (approximately 80 to 120°C) due to friction, compression, etc. due to suction and pressure feeding by the blower (14), and the separated air becomes hot air and is sent to the blowing box (3). It is sprayed onto the running web (1) through the slits (12) of the box (3). This hot air blowing reduces the viscosity of the water contained in the web (1), and
) It becomes easier to separate, and the efficiency of dewatering becomes extremely good.

Note that the present invention includes a suction box (2) and a spray box (3).
Since they are installed facing each other, even if the gap between the suction box (2) and the strip-shaped processed material (1) such as knitted fabric becomes large due to the thickness of the net conveyor (27), the strip-shaped processed material (1) such as knitted fabric can be removed regardless of the gap size. (1) Dehydration can be carried out efficiently. Further, in the above embodiment, air is sucked and pumped by one blower, but a separate blower may be connected to the blowing box (3).

E3 Effects of the Invention In the present invention, the suction box and the spray box are installed facing each other in the conveyance path of the strip-shaped material, with the strip-shaped material being interposed therebetween, so that the dewatering efficiency of the strip-shaped material can be greatly improved. can. In addition, since the suction box and the spray box are connected through the separator and the blower, the discharge pressure of the blower can be effectively used to perform suction dehydration and spray dewatering from the upper and lower surfaces of the traveling strip-shaped object. It is possible to improve the dewatering efficiency without increasing the suction pressure, and therefore, there is no possibility that a large amount of telescoping occurs on the strip-shaped processed material, and the suction of the strip-shaped processed material into the suction box can be reliably prevented. Furthermore, even when a knitted fabric or the like is dehydrated using a net-comb hair, the water can be efficiently dehydrated.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a dehydrator according to the present invention, FIG. 2 is a front sectional view of essential parts of both the suction and blowing boxes, and FIG. 3 is a side sectional view thereof. (1) - Strip-shaped processed material, (2) - Suction box, (3) -
- Spray box, (13) - Separate box, (14)
- Blower, (27) - Net conveyor. Figure 1 Figure 3 @ Figure I2

Claims (3)

[Claims] (1) A vacuum dehydrator characterized in that a suction box and a spray box are installed facing each other in a transfer path of a strip-shaped product with the strip-shaped product interposed therebetween. (2) A suction box and a spray box are installed facing each other in the transfer path of the strip-shaped processed material via the strip-shaped processed material, and the suction box and the spray box are connected via a separator and a blower. Vacuum dehydrator. (3) A suction box and a spray box are installed facing each other in the transfer route of the strip-shaped processed material with the strip-shaped processed material interposed therebetween, and the running section of an endless net conveyor that conveys the strip-shaped processed material is located between both boxes. A vacuum dehydrator characterized by: