JP3000097U - Switching valve for air suction - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a compact and simple switching valve for air suction. [Structure] An upper lid 10, a switching plate 20, an inner lid 30, a filter retainer 40, a filter 50, and a bottom plate 60 are housed in a barrel 70. The switching plate 20 is rotated by the switching motor 14, and the holes 22 are formed in the plurality of suction ports 12a, 12 of the upper lid 10.
b, 12c, 12d, 12e, and any one of the holes 32a, 32b, 32c, 32d, 32e of the inner lid 30, the air is blown from the selected suction port 12 to the position. 22 is sucked through the suction port 62 through the selected hole 32 and the filter 50. Top lid 10
A plurality of suction ports 12a, 12b, 12c, 12d,
12e is provided and the switching valve is integrated with the filter, resulting in a compact device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air suction switching valve, and more particularly to an air suction switching valve for selecting one of a plurality of pipes and connecting it to a suction device to suck air from the selected pipe.

[0002]

[Prior art]

 For example, in the production of plastic films, resin molded products, etc., a plurality of types of resin pellets are compounded and supplied in predetermined amounts, and melted and molded. Supply of such resin pellets to the mixing device is performed by, for example, sucking a pipe connected to the raw material supply tank with a suction device. Therefore, in order to select and suck the raw materials contained in the plural raw material supply tanks, it is necessary to switch the connection between the pipes connected to the plural raw material supply tanks and the suction device.

Conventionally, in order to switch the connection between the pipes connected to such a plurality of raw material supply tanks and the suction device, the pipes connected in multiple stages are switched by a reciprocating switching valve, and further, In order to remove dust and the like contained in the air sucked from the selected pipe, a filter was placed and connected to the suction device.

[0004]

[Problems to be solved by the device]

 Therefore, when the switching valve and the filter are separately arranged and the number of pipes to be selected is large, the number of stages of connection increases, so that the device becomes large and the device cannot be made compact.

An object of the present invention is to solve the above problems and provide a compact and simple switching valve for air suction.

[0006]

[Means for Solving the Problems] To achieve the above object, according to the present invention, an air for selecting any one of a plurality of pipes to connect with a suction device and sucking air from the selected pipes. The suction quote switching valve is a disc-shaped upper lid member having a plurality of suction ports respectively connected to a plurality of pipes, and a rotatable switching member having a single hole provided under the upper lid member. And an inner lid member that is provided in the lower portion of the switching member and has the same number of holes as the upper lid member in the same position as the upper lid member, a filter that is provided in the lower portion of the inner lid member, and a suction provided in the lower portion of the filter. It has a bottom plate member provided with a mouth, a motor for rotating the switching member, and a cylindrical body member for accommodating each member, and the motor is used to rotate the switching member so that the hole of the switching member is formed in the upper cover member. Multiple suction ports By matching the position of one of the plurality of holes of fine inner lid member, characterized by sucking either one or et air plurality of pipes.

[0007]

[Action]

 Therefore, according to the air suction switching valve of the present invention, the switching member is rotated by the motor so that the hole of the switching member is aligned with one of the plurality of suction ports of the upper lid member and the plurality of holes of the inner lid member. , Any one of a plurality of pipes can be selected and connected to a suction device, and suction can be performed from this pipe. Further, since the filter is integrally provided, it is possible to remove dust and the like contained in the air during suction from the selected pipe.

[0008]

【Example】

 Next, an embodiment of a switching valve for air suction according to the present invention will be described in detail with reference to the accompanying drawings. 1 and 3, there is shown an embodiment of a switching valve for air suction of the present invention.

FIG. 1 shows the external appearance of the air suction switching valve of this embodiment, and FIG. 2 shows the disassembled components. As shown in FIG. 2, the air suction switching valve of this embodiment has an upper lid 10, a switching plate 20, an inner lid 30, a filter retainer 40, a filter 50, and a bottom plate 60, which are cylindrical barrels. It is housed in 70 and assembled.

The upper lid 10 is formed in a disc shape and is provided with a plurality of suction ports 12a, 12b, 12c, 12d, 12e which are respectively connected to a plurality of pipes. Although five suction ports 12a, 12b, 12c, 12d, and 12e are provided in this embodiment, the required number may be provided according to the number of pipes that can be switched. A switching motor 14 is provided on the upper surface of the upper lid 10. The switching motor 14 rotates the switching plate 20.

The switching plate 20 is provided in the lower portion of the upper lid 10, is a disk-shaped member like the upper lid 10, and has one hole 22. The switching plate 20 is rotated by the drive of the switching motor 14, and the hole 22 is provided with any one of the suction ports 12a, 12b, 12c, 12d, and 12e of the upper lid 10 and the holes 32a, 32b, 32c of the inner lid 30. By matching any one of the positions 32d and 32e, any one of the suction ports 12a, 12b, 12c, 12d and 12e is selected and connected to the suction device to perform suction.

The inner lid 30 is provided at the lower portion of the switching plate 20, is a similar disc-shaped member, and has holes 32 a, 32 b, 32 c, 32 d, and 32 e provided at positions corresponding to the upper lid 10. A hollow cylindrical filter 50 is provided on the lower portion of the inner lid 30, and a filter retainer 40 is placed on the upper portion of the filter 50. A bottom plate 60 is provided below the filter 50. A suction port 62 is provided in the center of the bottom plate 60, and the suction port 62 is connected to a suction device such as a blower (not shown).

The air suction switching valve of this embodiment is configured as described above. When a switching command is output from a control circuit (not shown), the switching motor 14 is driven and the switching plate 20 rotates. The hole 22 provided in the switching plate 20 is any one of the suction ports 12 a, 12 b, 12 c, 12 d, 12 e of the upper lid 10 and any of the holes 32 a, 32 b, 32 c, 32 d, 32 e of the inner lid 30. Or matched to one position. When the switching plate 20 reaches the desired positions of the suction port 12 of the upper lid 10 and the hole 32 of the inner lid 30, a limit switch (not shown) operates and the switching motor 14 is stopped. As a result, the hole 22 of the switching plate 20 is aligned with the desired suction port 12 and hole 32.

When the suction device sucks air from the suction port 62 of the bottom plate 60, the air is sucked from the pipe connected to the suction port selected from the suction ports 12a, 12b, 12c, 12d, and 12e. The air sucked from any of the suction ports 12a, 12b, 12c, 12d, 12e passes through one of the holes 22 of the switching plate 20 and the holes 32a, 32b, 32c, 32d, 32e of the inner lid 30. Then, it passes through the filter 50 from the outside to the inside and is sucked out to the suction device from the suction port 62 of the bottom plate 60.

After that, when another raw material is sucked from any of the suction ports 12a, 12b, 12c, 12d, and 12e, the same operation as described above is performed, and the hole 22 provided in the switching plate 20 is performed. Is aligned with any one of the suction ports 12a, 12b, 12c, 12d, 12e of the upper lid 10 and any one of the holes 32a, 32b, 32c, 32d, 32e of the inner lid 30, Similarly, suction is performed.

FIG. 3 shows an example of a powdery or granular material feed device using the air suction switching valve of the present embodiment.

A suction pipe 22 and a raw material supply pipe 24 are connected to the upper portion of the supply device. Any one of the suction ports 12a, 12b, 12c, 12d, 12e of the air suction switching valve of this embodiment is connected to the suction pipe 22. Therefore, one supply device as shown in FIG. 3 is selected by the air suction switching valve of the present embodiment, and air is sucked from the pipe 22 by suction of the air suction switching valve.

The pipe 24 is connected to the raw material supply tank. When air is sucked from the pipe 22, the suction shutter 36 rises to close the outlet of the suction chamber 14 and the raw material powder is supplied from the pipe 24 to the suction chamber 14 in a predetermined amount. When the suction is stopped by the timer, the suction shutter 36 descends, the outlet of the suction chamber 14 is opened, and the raw material falls into the raw material supply hopper 16. The raw material powder that has fallen into the raw material supply hopper 16 is discharged from the raw material discharge port 40A and sent to a mixing device (not shown).

The air suction switching valve according to the present invention is used, for example, with such a supply device.

According to the air suction switching valve of the present embodiment, the switching motor 14 rotates the switching plate 20, and the limit switch causes the hole 22 of the switching plate 20 to move into the plurality of suction ports 12a, 12b, 12c of the upper lid 10. , 12d, 12e and the plurality of holes 32a, 32b, 32c, 32d, 32e of the inner lid 30, the rotation of the switching plate 20 is stopped.

Therefore, any of the plurality of pipes connected to the suction ports 12a, 12b, 12c, 12d, 12e can be selected and connected to the suction device, and suction can be performed from this pipe. Further, since the filter 50 is integrally provided, dust and the like contained in the air can be removed by the filter 50 during suction from the selected pipe.

Although the above-described embodiment is a preferred example of the present invention, the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention.

[0023]

[Effect of device]

 As will be apparent from the above description, according to the air suction switching valve of the present invention, the switching member is rotated by the motor, and the holes of the switching member are opened in the plurality of suction ports of the upper lid member and the plurality of inner lid members. Since it matches the position of one of the holes, you can select any of the multiple pipes and connect it to the suction device, and suction from this pipe, because the filter is integrated, Dust and the like contained in the air can be removed by suction from the selected pipe.

Therefore, since it is possible to perform suction from a large number of pipes according to the number of suction ports that can be provided in the upper lid member, it is not necessary to separately arrange the switching valve and the filter, and the selection is made. The device can be made compact even when the number of pipes is large.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a switching valve for air suction of the present invention.

2 is an exploded perspective view of the valve of FIG. 1. FIG.

FIG. 3 is a cross-sectional view showing an example of a powdery or granular material raw material supply device in which the valve of FIG. 1 is used.

[Explanation of symbols]

 10 Upper Lid 12a, 12b, 12c, 12d, 12e Suction Port 14 Switching Motor 20 Switching Plate 22 Hole 30 Inner Lid 32a, 32b, 32c, 32d, 32e Hole 40 Filter Presser 50 Filter 60 Bottom Plate 62 Suction Port 70 Body Tube

Claims (2)

[Scope of utility model registration request] 1. An air suction switching valve for selecting any one of a plurality of pipes and connecting the suction device to suck air from the selected pipe, wherein the valves are respectively connected to the plurality of pipes. A disc-shaped upper lid member provided with a plurality of suction ports to be connected, a rotatable switching member provided in the lower portion of the upper lid member, having one hole, and a lower portion of the switching member. An inner lid member in which the same number of holes as the upper lid member are provided at the same position as the upper lid member, a filter provided in the lower portion of the inner lid member, and a suction port provided in the lower portion of the filter. It has a bottom plate member, a motor for rotating the switching member, and a cylindrical body member for accommodating the members, and the motor is used to rotate the switching member so that a hole of the switching member is formed in the upper lid member. Multiple sucking By matching the position of one of the plurality of holes of look mouth and said inner lid member, air suction switch valve, characterized by sucking the air from one of the plurality of pipes. 2. The valve according to claim 1, wherein the valve further has a limit switch, and the motor is operated until the limit switch is operated so that the holes of the switching member are sucked into the plurality of suction holes of the upper lid member. A switch valve for air suction, which is made to coincide with one position of a mouth and a plurality of holes of the inner lid member.