JPH03188979A - Perfect hermetic type solvent washing machine - Google Patents

Abstract

PURPOSE:To prevent the release of a washing gas from a carrying-in/out port so as to decrease the natural loss of a washing solvent and to reduce size of the solvent washing machine by forming the solvent recovering machine in such a manner that the machine can freely be driven simultaneously with the automatic opening of a suction valve and discharge valve cooperatively with the opening of a slide outside door. CONSTITUTION:The suction valve 26 is provided in an inlet/outlet passage 3 which is opened and closed by a lifting slide inside door 47 of a washing machine body 1 and the carrying-in/out port 8 is provided on a ceiling 2a of an inlet/outlet stand-by chamber 2 to be opened and closed by a lifting sliding outside door 28 and the discharge valve 27 interlocked to the solvent recovering machine is provided in an under-the-floor side chamber 2b on the lower side of a conveyor 9. Cooling pipes 23 to 25 in which refrigerants are passed during the shutdown are internally provided in respective treating tanks 16 to 18 of the washing machine body 1. Mechanisms 36 to 39 for pressing the door in tight contact which press the sliding outside door 28 to the carrying-in/out port 8 to completely hermetically close the door when the door 28 is closed are provided. The solvent recovering machine is so formed that the machine can freely be driven simultaneously with the automatic opening of the suction valve 26 and the discharge valve 27 cooperatively with the opening of the sliding outside door 28.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a completely enclosed solvent cleaning machine that prevents organic solvents such as fluorocarbons used for cleaning from leaking and diffusing outside the cleaning machine body.

[Prior Art] This kind of conventional sealed solvent cleaning m (hereinafter referred to as "conventional cleaning machine"), which has already been filed by the present applicant and disclosed in Japanese Patent Application Laid-Open No. 54-58957, has an inlet/outlet connection at both ends of the washer body. The front and rear auxiliary chambers connected to the mouth, the washing processing chamber, the drain chamber, and the drying chamber built into the washer body are sealed independently with opening/closing doors to prevent leakage and wastage of solvent, reducing costs by reducing solvent consumption. However, since the opening/closing door was a vertically sliding outer door type with wire rope hanging, even when the opening/closing door was lowered and the opening was closed, the periphery of the opening/closing door remained in close contact with the surrounding wall of the opening. However, a small gap was created from which the solvent gas leaked, and perfection could not be expected.

In addition, exhaust ducts were opened in the front and rear preliminary chambers, drain chamber, and drying chamber that communicated with a large recovery machine that was constantly running during operation to exhaust and recover the solvent gas that had entered each chamber, so a suction flow was constantly generated. Therefore, when the door is opened and closed, the high concentration solvent gas that fills the cleaning processing chamber is unnecessarily forcibly sucked, resulting in a large amount of cleaning solvent being wasted.

Furthermore, it was also found that when the system was left to cool naturally after the operation was stopped, the organic solvent decreased by about 20% and disappeared during the night.

In this respect, the present invention aims to provide a fully enclosed solvent washer that is effective and suitable for solving the problems of the conventional enclosed solvent washer.

[Means for Solving the Problems] The first feature of the fully enclosed solvent cleaning machine of the present invention is that the loading/unloading port is connected to the loading/unloading port which is opened and closed by the sliding inner door of the cleaning machine body. An intake valve is installed in the Otsuki of the entry/exit waiting room that opens and closes with a sliding outer door, and a υ1 air valve that communicates with the solvent recovery machine is installed on the side wall of the lower floor below the conveyor. A cooling pipe for flowing a refrigerant is installed inside the door, and a door tight holding mechanism is provided which presses against the loading/unloading exit side to completely airtightly close the sliding outer door when the sliding outer door is closed. The intake valve and the exhaust valve are configured such that the solvent recovery machine can be freely driven at the same time as the intake valve and the exhaust valve are automatically opened. An intake valve is installed in the Otsuki of the entrance/exit waiting room, which is connected to the entry/exit entrance which is opened and closed by the sliding inner door of the washing machine body, which has a descending and ascending entrance that mutually transition to both the upper and lower darkrooms. and an exhaust valve communicating with the solvent recovery machine is provided on the lower floor side wall of the conveyor, an inner door is provided for closing the exit port and the ascending port when the operation is stopped, and on the other hand, the A cooling pipe is installed inside each processing tank in the lower floor room to flow a refrigerant when the operation is stopped, and a door tight holding mechanism is provided that presses the sliding outer door against the loading/unloading exit side to completely airtightly close the door when the sliding outer door is closed. This is achieved by adopting each of the above-mentioned constituent means, in which the intake valve and the exhaust valve are automatically opened in conjunction with the opening of the sliding outer door, and the solvent recovery machine is configured to be freely drivable at the same time. Ru.

[Function] Since the present invention takes the above-mentioned means, an inner sliding door and an outer sliding door are provided for the entrance/exit of the washing machine main body and the loading/unloading exit of the entrance/exit waiting room, and the sliding outer door is held by a door tight holding mechanism. At the same time, when the operation is stopped, the entrances and exits of the upper and lower partition walls inside the washer body are sealed with inner doors to ensure complete sealing. While suppressing the flow of solvent gas between the upper floor room and the upper and lower floor rooms as much as possible, the intake valve and exhaust valve are opened only when the sliding outer door is opened, and the solvent recovery machine is operated. It sucks and collects the solvent gas that has flowed into the washing machine body into the entry/exit waiting room and prevents it from leaking outside the washing machine.On the other hand, when the operation is stopped,
Cooling medium is passed through the cooling pipes that extend inside each processing room on the lower floor to rapidly cool the organic cleaning solvent and high-concentration solvent gas stored or filled in each processing tank, and evaporates from the liquid surface and condenses and liquefies the high-concentration solvent gas. This eliminates unnecessary losses caused by natural cooling of organic cleaning solvents and high-concentration solvent gases, and reduces operating costs.

[Example 1] A first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a central longitudinal sectional front view of this embodiment, and FIGS. 2 and 3 are cross-sectional views taken along lines 1--1 and I[[-I[1] of FIG.

In the figure, A is the fully enclosed solvent washer of this embodiment, 1 is the washer body, 2 is an entrance/exit waiting room connected to the inlet/exit opening 3 of the washer body 1, and 4 is the inside of the washer body 1 both above and below. Upper and lower partition walls that divide the darkrooms 5 and 6; 7 is a roller conveyor for conveying the cage α containing the items to be cleaned to the roller conveyor 9 in the loading/unloading waiting room 2 through the loading/unloading port 8; 10 is the loading/unloading roller conveyor The lifting/unloading roller conveyor 11 receives the cage α from the loading/unloading roller conveyor 9 through the port 3, and the cage α on the loading/unloading roller conveyor A710 is hung with a hook 12 (raised and unloaded). Entering the upper room 5 from the room 13, proceeding intermittently parallel to the ceiling 58, passing through the exit 14, and arranged in rows in compartment 1 and compartment 6, there is a hot liquid rocking tank 15, a cooling ultrasonic tank 16, and steam. The cage α passes through the tank 17 and the drain tank 18 in sequence, leaves the upper floor room 5 through the entrance 19, enters the loading and unloading room 13, and is lowered onto the elevating and unloading roller conveyor 10 waiting one step down. 20.21 is a cross-rod conveyor that is endlessly permeable through the above series of processes, elevating and lowering the security loading/unloading roller conveyor 10 and removing the cage α from the hanging hook 12, 20.21 is a cooling system, 22, 23,
24. 25 is a cooling pipe through which cooling water, which is a cooling medium, is passed when the operation is stopped; 26 is an intake valve installed on the ceiling 2a of the entry/exit waiting room 2;
7 is an exhaust valve that communicates with a separately installed solvent recovery machine (not shown) and is opened on the side wall 2b at the bottom of the floor; 28 is an elevating sliding outer door that moves up and down along the guide 29 of the entry/exit waiting room 2 and closes the loading/unloading exit 8; A pulley 32 is rotated by a transmission chain 31 by an opening/closing drive motor 30 mounted heavily on the ceiling 2a.
A balance weight 34 is suspended from one end of a wire rope 35 which is wound around the balance weight 34 and moves up and down inside the guide cylinder 33. The other end of a crank arm 43 has one end pivotally connected to the head 42 at the outer end of a piston rod 41 which is inserted into the presser operation cylinder 40 so as to be movable in and out. The rotating shaft 44 that fixes the
A pressure roller 46 is pivotally attached to the free end of the action piece 45, which cantileverly fixes the base end to one end, and presses and contacts each corner of the elevating slide outer door 28 when it is closed. It is an elevating and sliding inner door that moves up and down along the guide 48 of the loading/unloading room 13 of No. 1 and closes the entry/exit entrance 3, and the ceiling 13a
A balance weight 51 which is wound around a pulley 49 driven by a reversible motor (not shown) attached to the guide cylinder 50 and moves up and down within the guide tube 50 is suspended from one end of the wire rope 52, and is suspended from the other end of the wire rope 52. Reference numeral 54 denotes a middle door that opens and closes the exit 14 and the ascending entrance 19; 55 and 56 depict opening and closing operations, and a piston rod 59 and 60 that is inserted into the opening and closing operation cylinder 57 and 58 so that it can move in and out; and an outer end head 61. A rotation shaft 6 to which the other ends of crank arms 63 and 64 are fixed, one end of which is pivotally connected to .62.
Inner door 5 on bracket 67.68 protruding parallel to 5°66
3.54 are fixed respectively, 69 is a viewing door with a hard transparent glass or hard transparent plus book window 70, 71 is a sealing cover, and 72 is a conveyor sprocket group.

Although a vertical opening/closing cylinder 57 is used as the opening/closing mechanism 55 of the inner door 53 in this embodiment, the opening/closing mechanism 73 of the inner door 53 has a horizontal opening/closing cylinder 74 as shown in FIGS. A bracket 1-8 protrudes parallel to a rotating shaft 79 to which the other end of a crank arm 78 to which one end of an outer end head 76 of a piston rod 75, which is movably inserted and retractable, is pivotally connected, is fixed.
0, and arranged symmetrically with the opening/closing mechanism 56 in a plane.

Furthermore, although the main body 1 of the washing machine in this embodiment is a two-story permeable type in which the cross rod conveyor 11 is endlessly permeable over both upper and lower compartments 5.6, the present invention is not limited to this. The main body of the washing machine may be used, and in that case, an entry waiting room with a loading port and an exit waiting room with a loading port open at both ends of the main body of the cleaning machine are connected to each other. The loading and unloading entrances are equipped with sliding external doors, and the entrances and exits are equipped with internal sliding doors, and the entrance and exit waiting rooms are equipped with intake valves on the ceiling. It is exactly the same as in this embodiment that a solvent recovery machine and an exhaust valve for passing the solvent are provided on the side wall of the lower part of the floor.

Next, the operating procedure of this embodiment will be explained.

First, at the same time as the start of operation, the opening/closing operation cylinder 57° 58.7
4, the piston rod 0.75 is retracted, and the piston rod 59 is moved forward to rotate the rotating shafts 65, 66, 79 via the crank arms 63, 64, 78, so that they are integrated with this. By raising and opening the inner doors 53 and 54, the exit 14 and the exit 19 are left open.

0 Then, when the cage α containing the items to be cleaned is placed on the carry-in conveyor 7 and faced to the carry-in/out port 8, the full press operation cylinder 40 is activated, and the screws 1 to 41 are retracted and the crank arm 43 is moved. The rotating shaft 44 is rotated counterclockwise to move the action piece 45 up and down to release the pressure from the pressure roller 46. At the same time, the opening/closing drive motor 30 is activated and the pulley 32 is rotated forward in the clockwise direction. 35, the lift/lower slide outer door 28 is raised, and finally the inside of the guide 29 is completely raised and the loading/unloading port 8 is fully opened.

During this opening/closing drive motor 30, the intake valve 26 and the exhaust valve 27 are opened when the opening/closing drive motor 30 is started, and a solvent recovery machine (not shown) is driven to suck the cleaning gas that has entered the entrance/exit waiting chamber 2 into the exhaust valve 27, and the elevating/lowering sliding outer door is opened. 28, and completely prevents it from dispersing to the outside from the loading/unloading port 8 at the time of unveiling.

When the conveyor 7 passes through the loading/unloading port 8 and moves to the loading/unloading standby conveyor 9 in the loading/unloading waiting room 2, the opening/closing drive motor 30 is started to close again and the pulley 32 is rotated in the counterclockwise direction, so that the wire rope 1 Lower the elevating slide outer door 28 through the guide 2
9 and is completely exposed, and the loading/unloading port 8 is closed.

Then, the presser foot operation cylinder 40 is reactivated, and the piston rod 41 is advanced to move the rotation shaft 4 through the crank arm 43.
4 in the clockwise direction to horizontally activate the action piece 45, and press the four corners of the lifting slide outside R2B with the press roller 46 against the peripheral wall surface of the loading/unloading port 8, thereby completely sealing out the leakage of the cleaning gas. Then, the intake valve 26 and exhaust valve 27 are closed to stop the solvent recovery machine.

Next, the opening/closing drive motor (not shown) is started for a while and the pulley 49 is rotated forward in the training direction, so that the wire rope 52
The lift slide inner door 47 is raised through the guide 4.
When the stomach reaches the upper limit position of 8 and the entry/exit port 3 is fully opened, it passes from the entry/exit waiting conveyor 9 through the entry/exit port 3 and +7? l! 'f Transfer to the loading/unloading conveyor 10.

At the same time as the transition is completed, the opening/closing drive motor is started to close again and the pulley 49 is rotated counterclockwise, so that the wire rope 5
2, the elevating slide outer door 47 is lowered to the lower limit position guided by the lowering guide 48, and the entrance/exit opening 3 is closed.

Thereafter, the cage α on the elevating and unloading conveyor 10 is hooked on both sides by the hanging hooks 12 that come at the right time, and is moved intermittently along the operating trajectory of the cross rod conveyor 11, and is moved to the loading and unloading room 1.
3, enters the upper room 5, advances intermittently parallel to the large moon 58, reaches the lower room 6 from the exit 14, and moves the cage α sequentially into the hot liquid rocking tank 15, the cold liquid ultrasonic tank 16, and the steam tank. 17 and drain tank 18, enters the upper room 5 from the ascending port 19, returns to the loading/unloading room 13 while drying on the way, returns to the lifting/unloading conveyor 10, and removes the hanging hook 12. Similarly, the elevator slide inner door 47 opens, and after the transfer from the elevator loading/unloading conveyor 10 through the entrance/exit port 3 onto the entrance/exit standby conveyor 9 is completed, the elevator slide inner door 47 is closed.

Further, the intake valve 26 and the exhaust valve 27 are opened to drive the solvent recovery machine, and at the same time, the door tight holding mechanism 36.3 is opened as described above.
7.38.39 operates in the same manner as described above, releases the pressure, opens the elevating sliding outer door 28 as described above, and after completing the transition from the loading/unloading standby conveyor 9 to the loading/unloading conveyor 7 through the loading/unloading exit 8, the lowering sliding outer door opens. 28, and then re-activate the door tight press mechanisms 36, 37, 38, and 39 to press the four corners of the elevating sliding outer door 28 to the surrounding wall surface of the loading/unloading port 8 airtightly, thereby eliminating the cleaning gas inside the loading/unloading waiting room 2. Intake valve 26 exhaust valve 27 to completely prevent leakage
Close the valve and stop the solvent recovery machine.

The cleaned cage α is unloaded from the carry-in conveyor 7 and moves to the next process.

Such a series of operations is repeated for each cage α.

At the end of the day's operation in this embodiment, the opening/closing operation cylinders 57, 58, and 74 are operated so that the piston rotation is 0.
75, move the crank arm 64 and rotating shaft 66 counterclockwise, and move the crank arm 7B and rotating shaft 79 counterclockwise.
The piston rod 59 is moved clockwise, the piston rod 59 is retracted, and the crank arm 63 and the rotating shaft 65 are respectively swung counterclockwise to cause the inner doors 53 and 54 in the upright state to fall down. At the same time, the heater (not shown) is turned off, and the hot liquid shaking tank 15, the cooling ultrasonic tank 16, and the steam tank are sealed. 17 and the cooling pipes 22, 23, and 24° 25 installed in the drain tank 18 to rapidly cool down the h-machine cooling solvent and condense and cool the filling cleaning gas to evaporate from the organic cleaning solvent liquid surface. The cleaning gas is condensed and liquefied to be recovered.

[Effects of the Invention] Thus, the present invention is equipped with an elevating sliding outer door, an elevating sliding inner door, and an inner door at the loading/unloading exit, the entrance/exit, the exit, and the elevating entrance, and in particular, the door tight press mechanism of the elevating sliding outer door and the entrance/exit door. We installed an air intake valve in the waiting room that communicates with the solvent recovery machine to completely prevent the release of cleaning gas from the loading/unloading port, and we also installed cooling pipes in each processing tank to prevent the cleaning solvent from leaking out during the night. We succeeded in suppressing the loss as much as possible, reducing the natural loss by about 70% from a one-time perspective, and since the solvent recovery machine itself is not constantly operated, the capacity can be reduced and the operation time is reduced. It has excellent effects such as making it possible to significantly reduce costs.

[Brief explanation of drawings]

FIG. 1 is a central longitudinal sectional front view showing an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional views taken along lines ll-Tl and ■-■ in FIG. A central vertical front view showing,
FIG. 5 is a sectional view taken along the line v-v in FIG. 4. A...Completely enclosed solvent cleaning machine α...Cooler 1...Washing machine body 2...
・Enter/exit waiting room 2a, 5a...Ceiling 2b...
Lower floor side wall 3...Entrance/exit door 4...Upper and lower partition wall 5...Upper floor room 6...Lower floor room 7
Loading amount roller conveyor 8 Loading/unloading exit 9 Loading/unloading standby roller conveyor 10 Elevating/unloading roller conveyor 11 Cross rod conveyor 12 Hanging hook 13 Loading/unloading room 6 15...Heat wave shaking tank 17...Steam tank 19...Rising port 25...Cooling pipe 27...Exhaust valve 14...Descent port 16...Cooling ultrasonic tank 18. ...Drain tank 22, 23, 24゜26...Intake valve 28...Elevating and lowering sliding outer door 36-39...Door tight press mechanism 47...Elevating and lowering sliding inner door 53.54...Middle door 55.56.73...Opening/closing mechanism 7

Claims (1)

[Scope of Claims] 1. An intake valve is provided on the ceiling of the entry/exit waiting room that is connected to the entry/exit opening that is opened and closed by the sliding inner door of the washing machine body, and the loading/unloading exit is opened and closed by the sliding outer door, and an intake valve is provided in the floor below the conveyor. An exhaust valve communicating with the solvent recovery machine is provided on the side wall, and a cooling pipe is provided internally for flowing a refrigerant into each processing tank of the washing machine main body when the operation is stopped, and when the sliding outer door is closed, the In addition to having a door tight holding mechanism that presses to close completely airtight, the solvent recovery machine is configured to be freely drivable at the same time as the intake valve and the exhaust valve are automatically opened in conjunction with the opening and opening of the sliding outer door. A fully enclosed solvent washer 2 characterized by the following: The main body of the washer is separated into upper and lower chambers by an upper and lower partition wall, and has an exit and an ascending entrance through which a cross rod conveyor transfers to the upper and lower chambers. An intake valve is installed on the ceiling of the entrance/exit waiting room, which is connected to the entrance/exit that opens and closes with an inner sliding door, and an exhaust valve that communicates with the solvent recovery machine is installed on the side wall of the lower floor below the conveyor. On the one hand, it has an inner door that closes the descending port and the ascending port when the operation is stopped, and on the other hand, a cooling pipe is installed inside each processing tank of the washing machine body to flow a coolant when the operation is stopped, A door holding mechanism is provided which presses the door toward the loading/unloading exit side to completely airtightly close the door when the door is closed, and simultaneously opens the intake valve and the exhaust valve automatically in conjunction with the opening of the sliding outer door. A completely enclosed solvent cleaning machine characterized by a collection machine that can be freely driven.