JPH0451758Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a dehydrating device that dehydrates washed clothes, etc. by compression.

(Prior art) Figure 6 shows an example of a conventional dehydrator (patent application 1973-
25594), and FIG. 8 shows a cross-sectional view of the cylinder shown in FIG. 6, where 1 is the main body base and is installed on the work floor. 2 is an air cylinder whose cylinder part is fixed to the main body base 1 and whose conical part is fixed to the piston rod 14 of the hydraulic cylinder 5;
4 is a bottomless cylinder jacket having a large number of small holes in its body; 6 is a piston rod 1 of cylinder 5;
4 is a press disk fixed to the body, 7 is an air cylinder attached to the main body (not shown), 8 is a pin that serves as a swinging fulcrum for suspending the cylinder 7 from the main body (not shown), and 9 is attached to the main body (not shown). 10 is a pin serving as a swinging fulcrum for suspending the air cylinder 9 from a main body (not shown), and 11 is a hinge pin that is locked to the cylinder 7 and the cylinder 9.

12 is an air cylinder fixed to the main body (not shown); 13 is laundry to be dehydrated or a collection thereof; and 13A (FIG. 7) is laundry 1.
3 is the protruding part, 15 is the hydraulic oil that becomes the pressure medium that moves the piston rod 14 up and down, and 16 is the cylinder 5.
and a rubber gasket for sealing the piston rod 14, 17 is a holding plate for the rubber gasket 16, and 18 is a dust seal attached to the holding plate 17.

9 is a detailed view of part A in FIG. 8. In the figure, 19 is a seal ring, which is installed in a groove 20 provided on the side surface of the piston rod 14, and seals between the cylinder 5 and the piston rod 14. This is installed to prevent hydraulic oil 15 from leaking between the cylinder upper chamber 21 and lower chamber 22 when the piston rod 14 is raised or lowered. Further, when the hydraulic oil 15 is supplied to the cylinder upper chamber 21 from a supply port (not shown),
The piston rod 14 descends and squeezes the laundry 13,
When the hydraulic oil 15 is supplied to the lower chamber 22 from a supply port (not shown), the piston rod 14 rises.

Now, the trolley 3 loaded with the cylinder jacket 4 and the laundry 13 is moved onto the base 1 as shown in FIG. 6, and comes into contact with a stopper (not shown). Next, when the cylinder 2 is actuated to raise the conical part fixed to the tip of the piston rod, the conical part comes into pressure contact with the elongated conical recess on the lower surface of the truck 3, thereby positioning and fixing the truck. Next, when the cylinder 5 is operated and the press plate 6 is lowered from the state shown in FIG. 6, the cart 3 is pressed through the laundry 13, and the cushion device of the cart 3 is bent to contact the upper surface of the main body base 1. At this time, the conical portion of the cylinder 2 also descends while being pressed upward. The dehydration action progresses in this step.

Next, the cylinder 9 is actuated to make the cylinder 7 vertical, and then the cylinder 7 is actuated to engage the tip of the piston rod with the ear portion 4a of the cylinder jacket 4. Next, operate the cylinder 5 to press the press plate 6.
By slightly moving the cylinder jacket 4 upward, the relative displacement between the cylinder jacket 4 and the laundry 13 is facilitated. At this time, the contact between the upper surface of the main body base 1 and the lower surface of the trolley 3 is also released. The cylinder 7 is also actuated, and the cylinder jacket 4 that engages with the cylinder 7 is lifted until its lower end is aligned with or slightly above the press plate 6.

Next, the cylinder 12 is operated to push the laundry 13 out of the machine, and later the cylinder 12 is restored, and then the cylinder 7 is operated to place the cylinder jacket 4 on the trolley 3, and then the cylinder 7 and the cylinder Disengage the jacket 4. Next, actuate the cylinder 7 to retract the piston rod, and
The cylinder 9 is operated to restore the state shown in FIG. 6. At the same time, the cylinder 5 is activated and the press plate 6 is pulled out above the cylinder jacket 4. Next, the laundry 13 is replaced with another trolley, and the series of dewatering operations described above are repeated.

(Problems to be solved by the invention) In a dehydrator that dehydrates clothes, etc., it is extremely important to dehydrate the clothes evenly. For this purpose, it is necessary to press the press plate 6 into contact with the inner surface of the cylinder jacket 4 over the entire surface. As shown in FIG. 8, the cylinder 5 generally uses a seal ring 19, a rubber packing 16, etc. at the sliding portion between the cylinder 5 and the piston rod 14. In addition, as shown in FIG. 6, the piston rod 1
When the high pressure hydraulic oil 15 is supplied to the upper chamber of the cylinder to dehydrate the clothes 13 when the cylinder jacket 4 descends, if the clothes in the cylinder jacket 4 are unevenly distributed even to some extent, the piston In addition to the vertical force, the rod 14 also receives a lateral component force. At this time, the piston rod 14 and the seal ring 19
Since there is a slight gap between them as shown in FIG. 9, the piston rod 14 is inclined.

As a result, the center of the piston rod 14 and the center of the cylinder jacket 4 are shifted from each other. That is, the spacing between the press plate 6 and the cylinder jacket 4 is uneven, wide on one side, and narrow at a position 180° different from the other. In addition to the above-mentioned causes, the piston rod 14 bends due to bending force due to pressurization when the laundry 13 is stored in the cylinder jacket 4 in a biased manner. 4 is subjected to hoop stress because the laundry 13 is pressurized by the press plate 6, but if the laundry 13 is not evenly accommodated in the cylinder jacket 4, this hoop stress will occur unevenly. It has been confirmed that the shape of the cylinder jacket 4 is not a perfect circle, but an ellipse or a complicated shape.

Normally, the laundry 13 is housed unevenly in the cylinder jacket 4, so due to a combination of the above causes, the distance between the press plate 6 and the cylinder jacket 4 changes greatly, and in some cases, the press plate 6 By coming into contact with the jacket 4 and being pressurized, the gap on the 180° opposite side becomes larger, and due to the deformation of the ellipse of the jacket 4, water during dehydration flows between the protruding part 13A of the laundry and the press plate 6. It stays in the triangular gap 23, and after dehydration, it soaks into the protruding portion 13A, leaving the upper surface of its outer periphery almost undehydrated.

Although not shown, if this dehydrator is installed right next to the washing machine, the splashed water will still remain in the triangular gap 23 or on the press plate 6, and the protruding portion 13A and the laundry 13 after dehydration. Rehydrate the top. If an unbalanced moisture content or an undehydrated area occurs in this way, when processing with an ironer in the subsequent process, the drying time may be extended if the towel is used to dry completely after dehydration. There were problems such as increased energy loss.

The present invention has been proposed to solve the above-mentioned conventional problems.

(Means for Solving the Problems) Therefore, the present invention provides an apparatus for dehydrating clothes, etc. after washing by squeezing, in which water accumulates on the top and/or side of the pressurizing body during dehydration. It is equipped with a stagnant water discharge device that periodically or continuously sucks and discharges water or water scattered from the washing machine in the previous process, and is used as a means to solve the problem.

(Function) The accumulated water is sucked out from the suction port by negative pressure and collected in the bottle. In addition, water scattered from the continuous washer installed in the front stage of the dehydrator also accumulates. By constantly sucking this during spin-drying or by intermittently sucking it up when spin-drying is finished, it is possible to prevent it from falling onto the spin-drained laundry after spin-drying is finished.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. Figs. 1 to 5 show an embodiment of the present invention. In the figure, reference numeral 35 denotes a pedestal, which is installed on the work floor.
Reference numeral 36 denotes an upper pedestal, which is fixed to the pedestal 35 by a plurality of pillars 37. 38 is pedestal 3
Deck as a grid-like member fixed to 5, 39
Reference numeral 40 indicates a deck plate which is a perforated plate fixed to the deck 38; 40 indicates a perforated or mesh-like wide endless belt for conveyance through which water can pass; and 41 indicates a roll for driving the conveyance belt 40.

Reference numeral 42 indicates a basket whose lower half is formed into a cylindrical shape with a perforated plate, 43 indicates a laundry inlet which is an opening formed in the upper part of the basket, and 44 is fixed to the basket 42 and engages with the pillar 37. A guide 46 is a lifting drive device 47 fixed to the upper frame 36 and engaged with the basket 42 by a chain or the like.
48 is a hydraulic cylinder fixed to the upper frame 37;
49 is a hydraulic pump for the hydraulic system 48; 50 is a drive motor for the pump 49;
is the piston rod of the cylinder 47.

A press plate 52 is fixed to the piston rod 51. Reference numeral 53 denotes a membrane which is an elastic membrane that seals water by closely contacting the press plate 52 and the opening, 54 a water supply port attached to the press plate 52, 55 an air vent attached to the press plate 52, and 56 a press. Board 52
This is a liquid such as water sealed between the membrane 53 and the membrane 53.

A plurality of suction ports 57 are provided on the outer periphery of the press plate 52. Reference numeral 58 denotes a continuous washing machine consisting of a washing machine placed before the dehydration process, 59 a conveyor placed after the dehydration process and discharging the laundry 60 to a dryer, etc., 61 a collecting pipe for collecting the sucked water, and 62 an intermediate water washer. is a coiled tube fixed to the lower part of the upper frame 36 and expanded and contracted by the upper and lower parts of the press plate 52, which has one end connected to the circumferential wall of the collecting pipe 61, and 63 has one end connected to the coiled tube 62, and the other end connected to the bottle. A tube led to 64, 64 a bottle as a container for temporarily retaining suction water, and 65 a filter for removing suction water (also removes dust). 66 is a vacuum generator using compressed air (a vacuum pump can also be used), 6
7 is a muffler which is an outlet for sucked air; 68
69 is the compressed air for vacuum generation, 69 is the suction water temporarily retained in the bottle 64, 70 is the bottom lid that opens under its own weight as shown by the two-dot chain line when not suctioning, 71 is the discharged water that comes out when not suctioning, 7
2 is the water accumulated between the press plate 52 and the basket (suctioned from the suction port), 73 is the side wall position of the membrane 53 when no pressure is applied, 74 is the side wall position of the membrane 53 when pressurized, and 75 is the side wall position of the membrane 53 when pressurized. This is the internal pressure of the membrane 53 that occurs when the pressure is applied.

Next, to explain the operation, when the dehydrator is in the state shown in FIG. 1, that is, the belt 40 is stopped, the basket 42 is in the lowered position, and the piston rod 51 is in the raised position, an approximately fixed amount of laundry is removed from the continuous washing machine 58. 6
0 is placed into the basket 42. Next, when the hydraulic device 48 is activated upon receiving a signal from the continuous water washer 58 indicating the completion of loading, the piston rod 51 is lowered.
The membrane 53 pressurizes the laundry 60.

Normally, the laundry 60 is not necessarily uniformly thrown into the basket 42, but the laundry 60 that has been thrown into the basket 42
is a press plate 5 fixed to the tip of the piston rod 51
Pressure is applied by a membrane 53 attached to 2. At this time, since the sealed liquid 56 is contained in the membrane 53, the laundry 60 is subjected to uniform pressure and uniform dehydration is performed. However, when the laundry 60 is not uniformly contained within the basket 42, the press plate 52 is subjected to a horizontal component force in addition to the vertical force for pressurization. At this time, for the same reason as explained for the cylinder in Figure 6,
The press plate 52 shifts the center line of the basket 42, and the press plate 52 shifts the center line of the basket 42.
A part of the inner surface may come into contact with the inner surface of the

This is because when the press plate 52 presses the laundry 60 in a state where the laundry 60 is biased and stored in the basket 42, the piston rod 51 is bent, or the hoop generated in the basket 42 at this time. The stress becomes non-uniform, resulting in a complex shape (usually circular), and the membrane 53 and basket 42
Due to the decrease in the contact pressure between the two, the water being dehydrated will gush out to the top.

Compressed air is sent to the vacuum generator 66 from the absorption port 57 using a solenoid valve (not shown) to remove the accumulated water 72.
It is suctioned by negative pressure and collected into a bottle 64 via a collecting pipe 61, a coil tube 62, and a tube 63. In addition, this retained water 72 also retains water splashed from the continuous water washer 58 installed at the front stage of the dehydrator. By constantly suctioning this during dehydration, or by intermittently scooping it out at the end of dehydration,
After the spin-drying is completed, the spin-drained laundry 60 shown in FIG.
can be prevented from falling.

In addition, in FIG. 5, during pressurization, the membrane 5
When the side wall 73 of No. 3 is pressurized, an internal pressure 75 is generated, which moves to the inner surface of the basket 42 and becomes the position of the side wall 74 when pressurized, and the accumulated water 72 is above the suction port 57.
All of the accumulated water can be sucked out. Further, near the end of the dehydration, the average moisture content of the laundry 60 becomes around 50%, and free water rising upward disappears. Therefore, this effect can be sufficiently achieved even if the suction is performed a little before the end of dehydration. Vacuum generator 6 every cycle after completion of dehydration
When the compressed air 68 to the bottle 6 is stopped, the water 69 in the bottle 64 is automatically drained.

Next, when a timer (not shown) set in consideration of sufficient dewatering and a dewatering cycle times out, the circuit of the hydraulic device 48 is switched, and the piston rod 5
1 rises slightly as shown in Figure 3. Next, when the pressurized state by the membrane 53 is released by a timer or the like (not shown) and the elevating device 46 is operated, the basket 42 engaged by a chain or the like is raised as shown in FIG. 3. The rise of this basket 42,
When the drive roll 41 is rotated in the direction of the arrow by a signal detected by a limit switch (not shown) or the like, the laundry 60 is transferred to the conveyor 59 as the belt 40 rotates.
It moves in the direction of and is ejected.

Next, the conveyor 59 transports the dehydrated laundry 60 to a dryer (not shown), etc., while stopping the rotation of the drive roll 41 in response to a signal detected by a timer (not shown), a phototube, etc. (not shown). In response to the stop signal of the drive roll 41, the basket 42 is lowered to the lowered position on the belt 40 in the same manner as described above, and the piston rod 51 is raised to the raised position to restore the state shown in FIG. Next, the rise of the piston rod 51 is detected by a limit switch (not shown), and this signal causes the laundry 60 to be loaded from the continuous water washer 58, and the above-mentioned actions are repeated in cycles of 1.5 to 2 minutes, thereby causing intermittent operation. Perform dehydration.

(Effects of the invention) As explained in detail above, the present invention is configured to prevent water that comes out from the laundry during dehydration, or water that is scattered from outside (such as a washing machine) and mixed into the basket. Since the entire amount can be suctioned, it prevents an increase in the water content of the laundry after spin-drying, and the remaining water content is uniform, which is extremely effective for finishing the ironer in the subsequent process, and also saves energy in the dryer for pre-drying towels, etc. This is an extremely effective idea that can increase production through short-term recycling.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a dewatering device showing an embodiment of the present invention, FIGS. Figure 4a is an enlarged cross-sectional view of a part of the press plate and membrane part in Figure 1, Figure 4b is a plan view of the same, Figure 5 is an enlarged view of part B in Figure 4a, and Figure 6 is a conventional dehydration system. FIG. 7 is a side sectional view showing an example of the machine; FIG. 7 is a side view showing an example of the shape of laundry dehydrated by a conventional dehydrator;
8 is a side sectional view of the hydraulic cylinder in FIG. 6, and FIG. 9 is an enlarged view of section A in FIG. 8. Explanation of the main parts of the diagram, 42...Basket, 4
7...Cylinder, 48...Hydraulic device, 49...Pump, 51...Piston rod, 52...Press plate,
53... Membrane, 56... Enclosed water, 57...
Suction port, 58... Continuous washing machine, 60... Laundry, 61... Collection pipe, 62... Coil tube,
63...tube, 64...bottle, 66...vacuum generator.

Claims (1)

[Scope of utility model registration request] In a device that dehydrates clothes, etc. after washing by squeezing, water accumulated during dehydration or water splashed from a washing machine in the previous process is periodically or A dewatering device characterized by being equipped with a stagnant water discharge device that continuously sucks and discharges stagnant water.