JPH08310656A - Switching valve for air transport piping of light waste substance - Google Patents

Abstract

PURPOSE: To provide a switching valve for an air transport piping for light wastes capable of reducing the hooking of the substrate to be transported from being hooked to the tip of a valve element. CONSTITUTION: A switching valve is provided with a housing 1 which is provided with a drum-shaped or spherical valve chamber 2, and an inlet port 3, a first outlet port 4 and a second outlet port 5 at the prescribed position around the axis thereof, or the axis passing the center thereof, a rotary shaft 9 fitted to the housing so as to pass the axis, and plate-shaped first and second valve element 10, 11 whose base part is individually and rotatably fitted to the rotary shaft and whose peripheral edge is slidably provided on the inner surface of the valve chamber. Both outlet ports can individually be opened/closed at an arbitrary opening by operating each valve element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching valve used in an air transportation pipeline for pneumatically transporting light waste such as sheet, string, sponge mass, or plastics, paper and the like mixed with them.

[0002]

2. Description of the Related Art Conventionally, as a switching valve for a pneumatic transport line for light waste of this type, for example, as shown in FIG.
The upstream pipe line 31 and the first branch that bifurcates from this pipe line 31.
A plate-shaped valve element 34 that closes the first downstream pipeline 32 or the second downstream pipeline 33 is provided in a branch portion between the downstream pipeline 32 and the second downstream pipeline 33. , 33 rotatably provided by a rotary shaft 35 rotatably supported at the branch portions, or, as shown in FIG. 11, a flow path 37 of a housing 36 is formed by a spherical or cylindrical valve element 38 at right angles to the transport direction. A method of narrowing down from the direction is considered (actual fair 5-15663).
(See the official gazette).

[0003]

However, in the conventional pneumatic waste line switching valve for light waste, since the material to be transported has a sheet shape, a string shape, etc., the material to be transported is closed when the valve body is closed. There is a problem that an object is easily caught on the tip of the valve body and switching of the pipeline is incomplete. Therefore, the present invention reduces the catch of the transported object on the tip of the valve body,
Therefore, it is an object of the present invention to provide a switching valve for a light waste air transportation pipeline, which can completely switch the pipeline.

[0004]

In order to solve the above-mentioned problems, a first light waste pneumatic transfer line switching valve according to the present invention has a drum-shaped or spherical valve chamber, and its axis or Inlet port at the required position around the axis passing through the center, first
A housing having an outlet port and a second outlet port,
A rotating shaft attached to the housing so as to pass through the above axis,
It is characterized in that the base part is provided rotatably individually on the rotary shaft, and the plate-shaped first and second valve bodies each having a peripheral edge slidably provided on the inner surface of the valve chamber. The second light waste pneumatic transfer line switching valve is the same as the first one.
An inlet port provided in the housing between the outlet port and the second outlet port, and an auxiliary valve that can open and close the inlet port are provided. In addition, the third light waste switching valve for the air transportation pipeline is the first or second
The first and second cleaning air inlet ports are provided with a housing between the inlet port and the first outlet port and the second outlet port.

[0005]

In the first light waste pneumatic transfer line switching valve of the present invention, the first and second outlet ports can be individually opened and closed at any opening by operating the respective valve elements. At the time of switching between the first and second outlet ports, the front end of the valve element on the closed side moves independently while directing to the downstream side, and both outlet ports can be opened simultaneously. In the second light waste pneumatic transport line switching valve, in addition to the function of the first one, it becomes possible to supply air to the first or second outlet port which is being closed. In addition, in the third light waste pneumatic transfer line switching valve, in addition to the action of the first or second one, it becomes possible to clean the transported object caught at the tip of the valve element.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a first embodiment of a switching valve for a light waste pneumatic transportation line according to the present invention. 1 in the figure
Is a housing having a drum-shaped valve chamber 2, and an inlet port 3, a first outlet port 4 and a second outlet port 5 are provided at substantially equal intervals on a peripheral wall of the housing 1 around the axis of the valve chamber 2. An upstream pipe line 6, a first downstream pipe line 7, and a second downstream pipe line 8 are connected to each of the ports 3, 4, and 5. A rotating shaft 9 is attached to the housing 1 so as to pass through the axis of the valve chamber 2, and an upstream pipe line 6 and a first downstream pipe line 7 or a second downstream pipe line 8 are provided in the housing 1. Plate-shaped first and second valve bodies 10 and 11 for individually opening and closing the first outlet port 4 and the second outlet port 5 for communicating with each other.
However, the bases are individually rotatably attached, and the peripheral edge is provided so as to be slidably contactable with the inner surface of the valve chamber 2 and accommodated therein. Then, the valve bodies 10 and 11 are individually operated by manual or electric valve body operating means (not shown) provided outside the housing 1.

In the switching valve having the above structure, as shown in FIG. 1, the upstream pipe line 6 communicates with the second downstream pipe line 7 from the state where the upstream pipe line 6 communicates with the first downstream pipe line 7. 2, the first valve body 11 is operated to open the second outlet port 5, and the upstream conduit 6 is opened.
To communicate with the first downstream pipeline 7 and the second downstream pipeline 8. When the second valve element 11 is operated, the tip of the second valve element 11 moves so as to be directed to the downstream side, so that the transported object is not caught on the tip. Then, as shown in FIG. 3, the first valve body 10
Is operated to close the first outlet port 4. With the fact that the second outlet port 5 is completely opened during the operation of the first valve body 10, the amount of the transported object flowing through the first outlet port 4 is also reduced, It is possible to reduce catching of the transported object on the tip of the valve body 10.

FIG. 4 is a schematic view showing a second embodiment of the switching valve for a light waste pneumatic transportation line according to the present invention. This switching valve has an inlet port 12 for introducing purge air for cleaning the inside of the first and second downstream pipelines 7, 8 between the first outlet port 4 and the second outlet port 5 in the housing. 1 and is connected to the air intake conduit 14 via an auxiliary valve 13 that opens and closes the air inlet port 12. Air intake line 14
Is normally connected to the atmosphere, but may be separately connected to a gas supply source (not shown). In the switching valve having the above structure, as shown in FIG. 4, the upstream pipe line 6 is switched from the state in which the upstream pipe line 6 is in communication with the first downstream pipe line 7 to be in communication with the second downstream pipe line 8. First, as shown in FIG. 5, first, the second valve body 11 is operated to open the second outlet port 5, and the upstream pipeline 6 is communicated with the first downstream pipeline 7 and the second downstream pipeline 8. Let In this state, the inlet port 12 is closed by the auxiliary valve 13. Then, as shown in FIG.
The first valve body 10 is operated to close the first outlet port 4, and the auxiliary valve 13 is opened to introduce purge air into the casing 1 from the air inlet port 12. The purge air is introduced at any practically effective timing. The introduction of the purge air causes the purge air to flow from the first outlet port 4 to the first outlet port 4 as shown by the dotted line in FIG.
It is supplied to the downstream pipeline 7, and the inside of the first downstream pipeline 7 is cleaned. Then, as shown in FIG. 7, the auxiliary valve 13 is closed to complete the purge. Since other configurations and operational effects are similar to those of the switching valve of the first embodiment, the same components and the like are designated by the same reference numerals and the description thereof will be omitted.

FIGS. 8 and 9 are schematic views showing a third embodiment and a fourth embodiment of the switching valve for a light waste pneumatic transport line according to the present invention. These switching valves have first and second cleaning air inlet ports 15 and 16 for introducing cleaning air for cleaning the transported object caught at the tips of the first and second valve bodies 10 and 11, respectively. Inlet port 3 and first outlet port 4
The first and second points are that the casing 1 is provided between the first and second outlet ports 5 and the air conduits 17 and 18 connected to an air supply source (not shown) are connected to the cleaning air inlet ports 15 and 16. It differs from that of the embodiment. In both of the switching valves having the above-described configuration, the first and second closing operations are performed.
The valve bodies 10 and 11 are cleaned of the transported objects caught at their tips by the air blown from the first and second cleaning air inlet ports 15 and 16 on the way of their movement paths.
Since other configurations and effects are similar to those of the switching valves of the first and second embodiments, the same constituent members and the like are designated by the same reference numerals and the description thereof will be omitted.

In each of the above-described embodiments, the case where the valve chamber 2 has a drum shape has been described, but the present invention is not limited to this, and the valve chamber may have a spherical shape, for example.

[0011]

As described above, according to the first light waste air transfer pipeline switching valve of the present invention,
The second outlet port can be opened and closed individually by each valve element at an arbitrary opening degree, and when switching between the first and second outlet ports, the tip of the closed valve element is directed independently to the downstream side. Since it is possible to move and open both outlet ports at the same time, it is possible to reduce the catch of the transported object on the tip of the valve body, and it is possible to switch the pipe lines almost completely. According to the second switching valve, in addition to the function and effect of the first one, it becomes possible to supply air to the first or second outlet port which is being closed, so that the downstream pipeline connected to each outlet port can be provided. The inside can be cleaned.
Further, according to the third switching valve, in addition to the action and effect of the first or second one, it is possible to clean the transported object caught at the tip of the valve element, and therefore the transported object to the tip of the valve element can be cleaned. Can be completely prevented from being caught.

[Brief description of drawings]

FIG. 1 is a schematic view showing a first embodiment of a switching valve for a light waste pneumatic transportation line according to the present invention.

FIG. 2 is an explanatory view showing the operation of the switching valve of FIG.

FIG. 3 is an explanatory view showing the operation of the switching valve of FIG.

FIG. 4 is a schematic view showing a second embodiment of a switching valve for a light waste air transportation pipeline according to the present invention.

FIG. 5 is an explanatory diagram showing the operation of the switching valve of FIG.

FIG. 6 is an explanatory view showing the operation of the switching valve of FIG.

FIG. 7 is an explanatory view showing the operation of the switching valve of FIG.

FIG. 8 is a schematic view showing a third embodiment of the switching valve for a light waste pneumatic transportation line according to the present invention.

FIG. 9 is a schematic view showing a fourth embodiment of the switching valve for a light waste pneumatic transport line according to the present invention.

FIG. 10 is a schematic view of a conventional switching valve.

FIG. 11 is a schematic view of another conventional switching valve.

[Explanation of symbols]

 1 Housing 2 Valve Chamber 3 Inlet Port 4 1st Outlet Port 5 2nd Outlet Port 9 Rotating Shaft 10 1st Valve Body 11 2nd Valve Body 12 Inlet Port 13 Auxiliary Valve 15 1st Cleaning Air Inlet Port 16 2nd Air inlet port for cleaning

Claims (3)

[Claims] 1. A housing having a drum-shaped or spherical valve chamber and provided with an inlet port, a first outlet port and a second outlet port at required positions around an axis passing through the axis or the center thereof, and the axis. A rotary shaft attached to the housing so as to pass therethrough; and plate-shaped first and second valve bodies each having a base portion rotatably attached to the rotary shaft and having a peripheral edge slidably contacting an inner surface of the valve chamber. A switching valve for air transport pipelines for light waste. 2. An air inlet port provided in the housing between the first outlet port and the second outlet port, and an auxiliary valve having the air inlet port openable and closable. Item 1. A switching valve for a light waste pneumatic transportation line according to Item 1. 3. A first housing provided in the housing between the inlet port and the first outlet port and the second outlet port,
A switching valve for a light waste air transport line according to claim 1 or 2, further comprising a second cleaning air inlet port.