JP3140036B2 - Water separation filter and adsorption transfer device having the same - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water separation filter for separating water from air, and an adsorption transfer device having the same.

[Prior Art] Vacuum pressure generating devices such as vacuum pumps and ejectors may cause inconvenience when water comes into contact with control devices necessary for their operation control, in particular, vacuum pressure switches, pressure sensors, valves, silencers, and the like. Therefore, it is necessary that the air flowing through the vacuum circuit does not contain water.

However, for example, in a suction conveyance device in which a suction pad suctions and conveys a work by vacuum pressure, since water droplets adhere to the work and the like, suction of water into a vacuum circuit is inevitable. It is necessary to separate the water in the air by means.

Conventionally, as shown in FIG. 3, a water separation device 5 is provided in a vacuum circuit 1 for connecting the suction pad 2 to a vacuum source such as the ejector 3 to separate water in the air. In order for the water in the air to be separated by the separation device 5, a liquid level of a certain level or more is required, so that the device becomes large and maintenance is troublesome.

[Problems to be Solved by the Invention] The problem to be solved by the present invention is to provide a small and easy-to-maintain water separation filter, and an adsorption and transport device having the same.

[Means for Solving the Problems] In order to solve the above problems, a water separation filter of the present invention is a water separation filter used in a flow path in which the action of vacuum pressure and vacuum breakage are repeated, and an air inlet port. And an outlet, a filter element in a flow path connecting these openings, a drain port for discharging water separated by the filter element, and a vacuum port attached to the drain port, closed by vacuum pressure and opened by vacuum breakage. The filter element is formed of a water-blocking filter element that has air permeability and prevents water from passing therethrough.

In addition, the adsorption transport device of the present invention includes an air inlet and an air outlet, a filter element in a flow path connecting these openings, a drain port for discharging water separated by the filter element, and a drain port. A water-separating filter comprising a check valve attached to a mouth and closed by vacuum pressure and opened by vacuum breakage, wherein the filter element comprises a water-blocking filter element having air permeability and preventing passage of water. An adsorption pad for adsorbing a work connected to the water separation filter, a flow path for communicating an air outlet of the water separation filter with a suction side of the ejector, and a supply for supplying compressed air to the ejector. And a vacuum break valve for supplying air for vacuum break to the suction pad.

[Operation] The air that has flowed into the filter from the inflow port is separated from water molecules by the water-blocking filter element, and becomes air without water molecules and flows out from the outflow port.

In this case, a check valve that is closed by vacuum pressure and opened by vacuum break is provided at the drain port, so that water in the filter can be discharged every time the vacuum pressure is released.

In addition, since the adsorption transport device includes the water separation filter, it is possible to prevent the water from flowing out to the outflow side of the water separation filter.

[Embodiment] FIG. 1 shows an embodiment of the present invention.
10 is a main body 11 having an air inlet 13 and a drain port 15
And a cover plate 12a having an air outlet 14, and a bottom plate 12b opening to the outside, and the filter element 1 is provided in the main body 11.
6 is airtightly and detachably mounted.

The filter element 16 is configured as a tubular water-impervious membrane 19 attached between a pair of end plates 17a, 17b connected by a connecting member 17, and the outer periphery thereof is provided with dust for removing dust in the air. Filters 20 are installed at intervals, and vent holes 18a, which open into the filter element 16 in the end plate 17a, have water passage holes 18b, between the filter element 16 and the dust filter 20 in the end plate 17b.・ ・ The water blocking membrane 19 is, for example, PT
A tubular nonwoven fabric or membrane formed of a hydrophobic material such as FE is configured to have air permeability and prevent water from passing therethrough.

The lower part of the main body 11 constitutes a water storage chamber 21 of the water separated by the filter element 16, and the drain port 15 is provided with a spring 21.
A check valve 24 urged in the closing direction by 3 has a spring 23 which, when a vacuum pressure acts on the filter 10,
And has a weak urging force to open the drain port 15 when the vacuum pressure is released.

In the above embodiment, dust in the air is removed by the dust filter 20, then water is separated from the air by the filter element 16, and the separated water is stored in the water storage chamber 21 through the water holes 18b,. You. When the vacuum pressure acting on the water separation filter 10 is released, the water stored in the water storage chamber 21 is discharged to the outside by the check valve 24 opening the drain port 15.

In the above embodiment, the water separated from the air can be discharged depending on the presence or absence of the vacuum pressure acting on the water separation filter 10 without depending on the external signal, so that the drain can be easily discharged.

FIG. 2 shows an embodiment of an adsorption / conveyance device 30 incorporating the water separation filter 10; the adsorption / conveyance device 30 includes an ejector 31 as a vacuum source and a supply valve 32 for supplying compressed air to the ejector 31. , A vacuum release valve 33 for supplying compressed air to the suction pad 37 and their pilot valves, a vacuum pressure switch 34,
In addition, the water separation filter 10 is configured to be integrally assembled, and the inflow port 13 of the water separation filter 10 is connected to a tube 38.
To the suction pad 37, and the outlet 14 is connected to the ejector 31.
It communicates with a flow path 36 that opens to the outside.

When the compressed air in the supply port 35 is supplied to the ejector 31 by the supply valve 32, the suction conveyance device 30 sucks the air in the flow path 36 to generate a negative pressure in the flow path 36, and the suction pad 37 To adsorb. The air sucked into the water separation filter 10 from the inlet 13 is dust-removed by the dust filter 20, water is further separated by the filter element 16, and air containing no water flows out of the outlet 14 to the flow path 36. . Therefore, the pressure sensor 34a of the vacuum pressure switch 34 opened to the flow path 36 does not cause any trouble due to the water.

When the supply of the compressed air to the ejector 31 by the supply valve 32 is shut off and the vacuum break valve 33 is opened, the compressed air is supplied to the suction pad 37 through the vacuum break flow path 33a and the inlet 13 so that the suction is performed. The pad 37 releases the work 40. At the same time, since the on-off valve 41 is opened by the compressed air supplied to the signal flow path 33b, the water in the water storage chamber 21 is discharged from the drain port 15, and when the supply of the compressed air by the vacuum break valve 33 is shut off, the spring 42 The opening / closing valve 41 cuts off the communication between the water storage chamber 21 and the drain port 15 by the urging force of.

[Effects of the Invention] In the water separation filter of the present invention, water molecules are separated from air by the water-blocking filter element, so that the size of the water separation device can be reduced.

In addition, since a check valve which is closed by vacuum pressure and opened by vacuum break is provided, the configuration of the filter is simple and maintenance is easy.

Furthermore, since the water separation filter having the above-described configuration is incorporated in the adsorption and conveyance device, it is possible to prevent the water from flowing out to the outflow side of the water separation filter.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of a main part in a state of being incorporated in an adsorption / conveying apparatus, and FIG. 10 Water filter, 13 Inlet, 14 Outlet, 15 Drain port, 16 Filter element, 24 Check valve, 30 Adsorber, 31 Ejector, 32 …… Supply valve, 33… Vacuum release valve, 40… Workpiece, 41 …… On-off valve.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 46/00-46/54 B25J 15/06

Claims (2)

(57) [Claims] 1. A water separation filter used in a flow path in which the action of vacuum pressure and vacuum breakage are repeated, comprising: an air inlet and an air outlet; a filter element in the flow path connecting these openings; A drain port for discharging the water separated by the filter element, and a check valve attached to the drain port, which is closed by vacuum pressure and opened by vacuum breakage. A water separation filter, comprising a water-blocking filter element that blocks passage of water. 2. An air inlet and an air outlet, a filter element in a flow path connecting these openings, and a drain port for discharging water separated by the filter element.
A check valve attached to the drain port and closed by vacuum pressure and opened by vacuum breakage, wherein the filter element is a water-blocking filter element having air permeability and preventing water from passing therethrough. A separation filter, an adsorption pad for adsorbing a work connected to the water separation filter, a flow path communicating an air outlet of the water separation filter with a suction side of the ejector, and supplying compressed air to the ejector. And a vacuum break valve for supplying air for vacuum break to the suction pad.