JP5789388B2 - Sliding valve device and transport switching device provided with the same - Google Patents

Description

  The present invention relates to a slide type valve device that is incorporated in the middle of a transportation path of a granular material, and a transportation switching device including the same.

As a conventional slide type valve device incorporated in the middle of the transportation path of granular material, the transportation path is opened and closed or switched by sliding a plate-like slide valve body in the hollow provided in the valve body housing. Things are known.
In such a slide type valve device, since the slide valve body slides in the hollow of the valve body housing, wear and seizure may occur on both sliding surfaces. These slide valve bodies and valve body housings are generally made of metal, and if metal powder is generated due to wear, it can be considered that the slide valve body and the valve body housing are mixed into the granular material transported through the transportation path. Such a problem can be solved by applying or supplying lubricating oil to these sliding surfaces, but it is also conceivable that the lubricating oil is mixed into the granular material. Therefore, measures such as forming slide valve bodies and valve body housings with materials that are difficult to wear, heat-treating them, and surface-treating these sliding surfaces are adopted. Improvement was desired.

  For example, in the following Patent Document 1, a slide valve is proposed in which a slider plate having a communication hole communicating with both conduction holes is slidably interposed between upper and lower presser plates each having a conduction hole. . In this slide valve, an annular recess communicating with the guide groove of the slider plate is formed in the vicinity of the opening edge of the upper and lower presser plates, and a seal body such as a ring is fitted into the annular recess, and the seal body is spring-loaded. It is set as the structure pressed toward a slider board by pressing means, such as. According to this, the leak of the gas for transport which conveys granular material, and the biting of granular material were not reduced.

Japanese Utility Model Publication No. 4-97171

  However, even in the slide valve described in Patent Document 1, the seal body gradually wears out due to long-term use, and it is necessary to perform regular maintenance or the like, or the seal body that is pressed against the valve body has a frictional resistance (sliding). Dynamic resistance), and further improvement has been desired.

  The present invention has been made in view of the above circumstances, and can effectively prevent wear and the like of a slide valve body and a valve body housing that houses the slide valve body, and can slide the slide valve body smoothly. And it aims at providing the transport switching device provided with this.

  In order to achieve the above object, a slide type valve device according to the present invention is a slide type valve device that is incorporated in the middle of a transportation path for a granular material, and the slide valve body and the slide valve body are substantially horizontal. A valve body housing having a hollow guide portion slidably accommodated in the direction and having an opening communicating with the transport path, and provided so as to face between a lower surface of the slide valve body and a bottom surface of the hollow guide portion And an air supply unit that supplies air so that an air layer is formed between the air supply ports.

According to the slide type valve device according to the present invention configured as described above, air is supplied by the air supply unit so that an air layer is formed between the lower surface of the slide valve body and the bottom surface of the hollow guide unit. Therefore, wear and seizure of the slide valve body and the valve body housing that accommodates the slide valve body can be effectively prevented. In other words, an air layer is formed between the bottom surface of the slide valve body and the bottom surface of the hollow guide portion so that the slide valve body floats against the dead weight of the slide valve body that slides in a substantially horizontal direction. The sliding resistance (friction resistance) between the lower surface of the slide valve body and the bottom surface of the hollow guide portion can be reduced or substantially eliminated, and wear and seizure can be effectively prevented. This also allows the slide valve body to slide smoothly.
In addition, since the sliding resistance (friction resistance) between the lower surface of the slide valve body and the bottom surface of the hollow guide portion can be reduced or substantially eliminated, the degree of freedom in selecting materials for forming these increases, and heat treatment and Processing such as surface treatment can be omitted, and material costs and processing costs can be reduced.
Furthermore, since air is supplied between the lower surface of the slide valve body and the bottom surface of the hollow guide portion, a positive pressure is generated between them, and particulate material or dust transported between them enters. It is also possible to prevent this, and it is possible to omit the cleaning that is necessary when changing materials.

In this invention, you may make it provide the air supply port of the said air supply part so that it may open to the bottom face of the said hollow guide part.
With such a configuration, the structure can be simplified compared to the case where the air supply port is provided on the slide valve body side to be slid, that is, on the moving side.

In the present invention, at least one of the lower surface of the slide valve body and the bottom surface of the hollow guide portion is provided with a concave groove that receives air supplied from the air supply port of the air supply portion along the slide direction. It may be.
With such a configuration, it is possible to effectively increase the pressure receiving area required when the lower surface of the slide valve body is floated from the bottom surface of the hollow guide portion in order to form the air layer. Thereby, in order to form an air layer, that is, in order to float the slide valve body, it is possible to relatively reduce the diameter of the air supply port, or to reduce the number of air supply ports. it can.

In the present invention, a flow rate adjusting valve may be provided in an air supply line connected in communication with the air supply port of the air supply unit.
With such a configuration, the slide valve body can be adjusted relatively easily and stably so that the upper surface of the slide valve body is not pressed against or contacted with the top surface of the hollow guide portion due to the floating of the slide valve body. . In other words, by adjusting the flow rate of the supplied air, it is relatively simple and stable so that the slide valve body can be lifted while ensuring a clearance (clearance) between the upper surface of the slide valve body and the top surface of the hollow guide portion. Can be adjusted.

In this invention, it is good also as what further provided the upper side air supply part which supplies air between the upper surface of the said slide valve body, and the top | upper surface of the said hollow guide part.
With such a configuration, it is possible to prevent the upper surface of the slide valve body from being pressed against or contacting the top surface of the hollow guide portion due to the floating of the slide valve body with a relatively simple structure.
In addition, since air is supplied between the upper surface of the slide valve body and the top surface of the hollow guide portion, a positive pressure is generated between them, and particulate material or dust transported between them enters. Can also be prevented.
Further, in the case where the top and bottom of the slide type valve device are arranged upside down, the upper air supply portion is formed so that an air layer is formed between the lower surface of the slide valve body and the bottom surface of the hollow guide portion. It can also be used as an air supply unit for supplying air, and the air supply unit can be used as an upper air supply unit. Thereby, a common slide type valve device can be used even when it is necessary to arrange the top and bottom in reverse.

You may make it comprise the air supply line of the said upper side air supply part by branching the air supply line of the air supply part which supplies air to the lower surface side of a slide valve body. Moreover, you may make it provide a flow regulating valve in the branch line.
The air supply port of the upper air supply unit may be provided so as to open on the top surface of the hollow guide unit.
Further, at least one of the upper surface of the slide valve body and the top surface of the hollow guide portion may be provided with a groove along the slide direction for receiving the air supplied from the air supply port of the upper air supply portion. Good.

In the present invention, each of the hollow guide portions of the valve body housing is provided at each of both ends in the sliding direction, and has valve body drive air supply ports that open toward the respective end faces of the slide valve body, and these valve body drives. A valve body drive air supply unit that selectively supplies air to the air supply port may be provided.
With such a configuration, the slide valve body can be slid in the hollow guide portion by the air supplied from the valve body driving air supply port. As a result, a space for providing an actuator as a valve body drive unit such as an air cylinder for sliding the slide valve body becomes unnecessary, and a compact design can be achieved.

In the present invention, the opening of the valve body housing is composed of a first opening through which a one-system transportation path communicates and two second openings through which two systems of transportation paths communicate with each other, A first through hole that allows one of the second openings to communicate with the first opening when the slide valve body is slid to one side, and the other of the second openings when the slide valve body is slid to the other side. And a second through hole that allows the first opening to communicate with each other may be provided at intervals along the sliding direction.
In this case, the second opening of the valve body housing is provided so as to face the first opening, and is formed as a pair formed at intervals along the sliding direction. May be provided obliquely along the thickness direction at intervals along the sliding direction.
Alternatively, the first opening and the second opening of the valve body housing are provided so as to face each other, and the other of the second openings is provided in a direction substantially orthogonal to the facing direction. It is good also as an aspect which provides the through-hole corresponding to these in a slide valve body. That is, when one of the first opening and the second opening is provided on the upper and lower sides, respectively, the other of the second openings may be provided on the side surface side.

With the above configuration, either one of the two transportation routes and one transportation route can be selectively switched to communicate with each other, and two different types of granular material are switched and transported. be able to.
Further, since the slide valve body as described above needs to be provided with the through hole being inclined or bent, the thickness of the slide valve body becomes relatively large, resulting in a tendency to become heavy and wear. There is a tendency that seizure is likely to occur. According to the present invention, the air supply portion forms an air layer between the lower surface of the slide valve body and the bottom surface of the hollow guide portion as described above, and therefore, the slide valve having such two through holes. It is also suitable for a slide type valve device provided with a body.

In addition, the transport switching device according to the present invention includes a plurality of slide valve devices according to the present invention in which one of the second openings of adjacent slide valve devices communicates with the first opening. It was set up.
According to the transport switching device according to the present invention configured as described above, the first opening of the slide type valve device disposed on one end side in the juxtaposed direction direction by controlling the slide valve body of each slide type valve device. The other of the second openings of the slide type valve device and the other of the second openings of the other slide type valve device and the other side of the parallel arrangement direction with respect to the transport path connected to It is possible to switch the communication path connected to one of the second openings of the valve device for communication. That is, one-way to multi-way transportation switching can be performed.
Also, for example, compared to conventional rotary header type transport switching devices, etc., it is also easy to switch and control the slide valve bodies of a plurality of slide type valve devices substantially simultaneously, so that the transport direction can be switched relatively quickly. Can also be done. In addition, because the slide valve body can be slid within the valve body housing to change the transport direction, it is possible to suppress leakage, spillage, biting, etc. of the granular material material compared to conventional rotary header type transport switching devices, etc. You can also

In addition, the transport switching device according to the present invention includes a plurality of slide valve devices according to the present invention in which one of the second openings of adjacent slide valve devices communicates with the first opening. A first switching unit provided and a plurality of slide type valve devices according to the present invention are provided in parallel, with one of the second openings of adjacent slide type valve devices communicating with the first opening. And a sliding type disposed at one end of the second switching unit in the juxtaposed direction and a first opening of the sliding valve device disposed at one end of the first switching unit. The first opening of the valve device is communicated.
According to the transport switching device according to the present invention configured as described above, the same effects as described above can be obtained, and multi-directional vs. multi-directional transport switching is performed by sliding control of the slide valve body of each slide type valve device. be able to.

  Since the slide type valve device according to the present invention has the above-described configuration, it is possible to effectively prevent wear of the slide valve body and the valve body housing that accommodates the slide valve body, and to make the slide valve body smooth. Can be slid.

(A), (b) is a schematic longitudinal cross-sectional view schematically showing a slide type valve device according to an embodiment of the present invention, each corresponding to the X1-X1 arrow in FIG. 2 (a). It is. (A)-(d) all show the same slide type valve apparatus typically, (a) is a schematic plan view, (b) is a schematic bottom view, (c), (d) is a schematic. It is a side view. (A), (b) shows typically an example of the slide valve body with which the same slide type valve apparatus is equipped, (a) is a schematic plan view, (b) is a schematic bottom view, (c) These are explanatory drawings which show typically an example of the air circuit diagram of the same slide type valve device. It is a schematic front view which shows typically an example of the transport switching apparatus provided with the slide type valve apparatus. It is a schematic system block diagram which shows typically an example of the transport switching system of the granular material incorporating the transport switching device. (A)-(c) shows typically the slide type valve apparatus which concerns on other embodiment of this invention, (a), (b) is the X2-X2 line arrow in Fig.7 (a). A schematic longitudinal sectional view corresponding to each view, (c) is a schematic side view of the slide type valve device. (A), (b) both show the same slide type valve device, (a) is a schematic plan view, (b) is a schematic bottom view, and (c) is the slide type valve device. It is explanatory drawing which shows typically an example of this air circuit diagram. (A)-(c) shows typically the slide-type valve apparatus which concerns on other embodiment of this invention, (a) is a schematic longitudinal cross-sectional view corresponding to Fig.1 (a), (B) is a schematic plan view schematically showing an example of a slide valve body provided in the slide type valve device, and (c) is an explanatory view schematically showing an example of an air circuit diagram of the slide type valve device. is there. (A)-(c) shows typically the slide-type valve apparatus which concerns on other embodiment of this invention, (a) is a schematic longitudinal cross-sectional view corresponding to Fig.1 (a), (B) is a schematic bottom view schematically showing an example of the top wall portion of the valve body housing provided in the slide type valve device, and (c) is a partially broken schematic enlarged view corresponding to the Y portion in (a). It is a longitudinal cross-sectional view.

Embodiments of the present invention will be described below with reference to the drawings.
In some of the drawings, some of the detailed reference numerals attached to the other drawings are omitted, and pipes and signal lines are schematically shown by solid lines, two-dot chain lines, and dotted lines. .
Further, the front-rear direction shown in each of the following embodiments will be described with the air cylinder side as the rear, the piston rod extending direction side as the front, and the up-down direction, etc., with reference to the state shown in FIG. However, these directions are not limited depending on the arrangement mode and the like.

1-3 is explanatory drawing for demonstrating the slide type valve apparatus of the granular material which concerns on 1st Embodiment.
As shown in FIG. 1, the slide valve device 1 according to this embodiment includes a valve body housing 10, a slide valve body 20 accommodated in the valve body housing 10, and a valve that slides the slide valve body 20. And an air cylinder 40 as a body driving unit.
This slide type valve device 1 is incorporated in the middle of the transport paths 2, 3 and 4 of the granular material. In this embodiment, this slide type valve apparatus 1 is connected to a single system transport path (first transport path). 2 shows an example of being incorporated between two and two systems of transport paths (second transport path 3 and third transport path 4).
Moreover, in this embodiment, it is set as the structure which switches and connects the 2nd transport path 3 and the 3rd transport path 4 with respect to the 1st transport path 2 by sliding the slide valve body 20 as a slide type valve apparatus. The switching valve device 1 is illustrated.

The granular material transported through each of these transport paths 2, 3, and 4 refers to a powder / granular material, but includes a fine flake, short fiber, sliver and the like. Moreover, as said material, what kind of materials, such as synthetic resin materials, such as a resin pellet and a resin fiber piece, metal material, a semiconductor material, a wood material, a chemical material, a food material, may be sufficient.
Moreover, as an aspect which conveys such a granular material, it is good also as an aspect which carries out pneumatic transportation (suction transportation, pressure feeding), or it is good also as an aspect which transports (transfers) by dead weight.

  The valve body housing 10 has a substantially rectangular parallelepiped shape as shown in FIGS. 1 and 2 and has a hollow guide portion 17 that accommodates the slide valve body 20 so as to be slidable in a substantially horizontal direction. In this embodiment, the valve body housing 10 includes a top wall portion 13 and a bottom wall portion 14 that are vertically opposed to each other in a direction (thickness direction) substantially orthogonal to a sliding direction (front-rear direction, longitudinal direction in the illustrated example). And the remaining side wall portions 15 and 15 that are opposed to each other in the direction substantially perpendicular to the sliding direction (width direction) and the end plate 16 that is disposed at the air cylinder 40 side (rear side) end. The shape is a box shape that opens toward the front, and the space surrounded by these is the hollow guide portion 17.

In addition, the valve body housing 10 is provided so as to face the first opening 11 through which the first transport path 2 communicates and the first opening 11, and is formed at intervals along the sliding direction. The second transport path 3 and the third transport path 4 are provided with a pair of second openings 12 and 12 that communicate with each other.
In the present embodiment, a first opening 11 that penetrates the bottom wall portion 14 in the thickness direction of the bottom wall portion 14 is provided, and the top wall portion 13 penetrates in the thickness direction of the ceiling wall portion 13 respectively. An example is shown in which a pair of second openings 12, 12 are provided at intervals along the sliding direction. In the illustrated example, the pair of second openings 12 and 12 and the first opening 11 are arranged at substantially the same position along the opposing direction of the side wall portions 15 and 15, that is, each of the openings 11, 12 and 12. An example is shown in which these openings 11, 12, and 12 are provided so that the hole centers are positioned on substantially the same plane (see also FIG. 2). Further, in the example of the drawing, in the plan view (bottom view), each of the openings 11 is positioned so that the center of the hole of the first opening 11 is located at the approximate center between the pair of second openings 12 and 12 formed with a space therebetween. , 12 and 12 are shown.

  Further, in the illustrated example, each of the openings 11, 12, 12 is illustrated as a circular shape having substantially the same diameter. In addition, it is not restricted to such a circular opening, It is good also as a rectangular opening. Further, in the illustrated example, the valve body housing 10 is constituted by a member having a substantially concave shape in cross section constituting the bottom wall portion 14 and both side wall portions 15, 15, a plate-like member constituting the top wall portion 13, and the end plate 16. However, the present invention is not limited to such an embodiment. For example, it is good also as an aspect which comprised each wall part combining the plate-shaped member, or formed integrally in the above-mentioned substantially box shape. Further, the end plate 16 may have a structure that can be easily attached to and detached from the wall portions 13, 14, 15, and 15. According to this, the air cylinder 40 to be described later together with the end plate 16 and the slide valve body 20 connected thereto can be easily removed from the valve body housing 10, and the inside of the valve body housing 10 and the slide valve body 20 can be removed. It can be easily cleaned.

As shown in FIGS. 1 and 2, the slide valve body 20 has a substantially rectangular parallelepiped shape corresponding to the shape of the hollow guide portion 17 of the valve body housing 10 (FIGS. 3A and 3B are also shown). reference). In addition, when the slide valve body 20 is slid to one side (the front side in the figure), one of the first opening 11 and the second opening 12 of the valve body housing 10 (in the figure example, The first opening 11 and the second opening 12 of the valve body housing 10 are slid to the first through hole 21 communicating with the second opening 12 on the rear side and the other side (rear side in the illustrated example). The second through hole 22 that communicates with the other one (the second opening 12 on the front side in the figure) is provided with a gap along the slide direction (longitudinal direction in the figure). .
The first through hole 21 and the second through hole 22 are provided so as to penetrate in the thickness direction (vertical direction) of the slide valve body 20, and are provided obliquely along the thickness direction (FIG. 3). (See also (a) and (b)). In the illustrated example, the through holes 21 and 22 are expanded from the lower side toward the upper side along the sliding direction so as to correspond to the openings 11, 12, and 12 provided in the valve body housing 10. The example provided in the diagonal form is shown.

In the illustrated example, in a state in which the slide valve body 20 is slid forward, the lower opening of the first through hole 21 and the first opening 11 of the valve body housing 10 are substantially aligned with each other. A first through hole 21 is formed so that the upper opening and the second opening 12 on the rear side of the valve body housing 10 are substantially aligned (see FIG. 1A). Further, in this state, the second through hole 22 is formed so that the upper and lower openings of the second through hole 22 are substantially closed by the top wall portion 13 and the bottom wall portion 14 of the valve body housing 10. (See FIG. 1 (a)).
On the other hand, in a state in which the slide valve body 20 is slid rearward, the lower opening of the second through hole 22 and the first opening 11 of the valve body housing 10 are substantially aligned, and the upper side of the second through hole 22. A second through hole 22 is formed so that the opening and the second opening 12 on the front side of the valve body housing 10 are substantially aligned (see FIG. 1B). Further, in this state, the first through hole 21 is formed so that the upper and lower openings of the first through hole 21 are substantially closed by the top wall portion 13 and the bottom wall portion 14 of the valve body housing 10. (See FIG. 1 (b)).

In addition, although each of these through-holes 21 and 22 has illustrated the thing by which the cross-sectional shape orthogonal to the penetration direction was made into the circular shape of substantially the same diameter as each opening 11, 12, 12 of the valve body housing 10 mentioned above. The through hole having a circular cross section is not limited to the through hole having a circular cross section, and may be a through hole having a rectangular cross section corresponding to the shape of each opening 11, 12, 12 of the valve body housing 10.
In addition, in the illustrated example, the through-holes 21 and 22 are formed through the block-like body. However, the plate-like member has a substantially rectangular parallelepiped shape. The upper and lower plate-like members are provided with openings and connected pipes or the like. By connecting these openings, the above-described through holes 21 and 22 may be configured.
Further, the valve body housing 10 and the slide valve body 20 described above may be made of a metal material such as carbon steel or stainless steel.

The air cylinder 40 is connected to the rear side end portion of the slide valve body 20 and functions as a valve body drive unit that slides the slide valve body 20. As this air cylinder 40, a well-known thing is applicable. In the illustrated example, an air cylinder 40 including a cylinder body 41, a piston rod 43 that is expanded and contracted from the cylinder body 41, and a connecting member 44 that connects the piston rod 43 and the slide valve body 20 is illustrated. .
The cylinder body 41 has a port 45 for introducing air for moving the piston 42 (see FIG. 3C) accommodated in the cylinder body 41 and connected to the base end of the piston rod 43 in the sliding direction. 45 is provided. The air cylinder 40 is configured such that a piston rod 43 is inserted into a through-hole formed in the end plate 16 of the valve body housing 10 and is connected and fixed to the end plate 16 with a stopper such as a screw or a bolt. Good.

As shown in FIG. 3C, a drive air line 46 connected to a compressed air source 5 such as a compressor is connected to each port 45, 45 of the air cylinder 40. The driving air line 46 is connected to the compressed air source 5 via the compressed air line 6 in the illustrated example. The compressed air line 6 is provided with a manual open / close valve 7, a regulator or a pressure reducing valve 8 for adjusting the pressure of the compressed air to be supplied, and a pressure gauge 9.
The driving air line 46 is provided with a driving air line switching valve 47 such as an electromagnetic valve, and the compressed air is selectively supplied to the ports 45, 45 downstream of the driving air line switching valve 47. This is done via each drive air line connected to each of the side ports, whereby the piston rod 43 is expanded and contracted. In the illustrated example, a solenoid valve of a double-sided solenoid type is shown as the drive air line switching valve 47. However, as long as the compressed air from the drive air line 46 can be switched and supplied to each port 45, 45. Any switching valve may be used, and other switching valves such as an electromagnetic valve and a pilot operation valve may be employed.

In FIG. 3C, reference numeral 48 denotes a drive air line 46 (or each port 45, 45) branched and connected to each port 45, 45 with a check valve. This is a flow control valve (speed controller, speed control valve).
Further, the stroke (extension / contraction) of the piston rod 43 of the air cylinder 40 is such that the first opening 11 of the valve body housing 10 and the second opening 12 on the rear side of the valve body housing 10 are slide valve bodies 20 when extended as shown in FIG. The first opening 11 of the valve body housing 10 and the second opening 12 on the front side are connected to the first of the slide valve body 20 so as to communicate with each other through the first through-hole 21. The two through holes 22 are set to communicate with each other.
In addition, the valve body driving unit for sliding the slide valve body 20 is not limited to the above-described air cylinder 40, and other various actuators such as a hydraulic cylinder, an electric cylinder, an electric screw shaft (ball screw, etc.), etc. Adoption is possible.

In the switching valve device 1 configured as described above, as shown in FIG. 1A, if compressed air is introduced into the cylinder body 41 via the rear end side port 45 of the air cylinder 40, the slide valve body is provided. The first opening 11 of the valve body housing 10 communicates with the second opening 12 on the rear side by the first through hole 21 of the slide valve body 20 (FIGS. 2A and 2B). See also)). In this state, the second opening 12 on the front side of the valve body housing 10 is substantially closed by the slide valve body 20. As a result, the first transport path 2 communicated with the first opening 11 and the second transport path 3 communicated with the second opening 12 on the rear side communicate with each other and communicate with the second opening 12 on the front side. The third transport path 4 is blocked.
On the other hand, as shown in FIG. 1B, when the compressed air is introduced into the cylinder body 41 via the front end side port 45 of the air cylinder 40, the slide valve body 20 moves rearward, and the slide valve The first opening 11 of the valve body housing 10 communicates with the second opening 12 on the front side through the second through hole 22 of the body 20 (see also FIG. 2B). In this state, the second opening 12 on the rear side of the valve body housing 10 is substantially closed by the slide valve body 20. As a result, the first transport path 2 communicated with the first opening 11 communicates with the third transport path 4 communicated with the second opening 12 on the front side, and the second transport path 12 communicated with the second opening 12 on the rear side. 2 The transport path 3 is blocked.

In the switching valve device 1 as the slide type valve device configured to slide the slide valve body 20 in the hollow guide portion 17 of the valve body housing 10 as described above, the slide valve body 20 is particularly slid. It is conceivable that the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17 of the valve body housing 10 slide, and wear and seizure occur on both sliding surfaces.
Therefore, the switching valve device 1 according to the present embodiment has the air supply port 34 provided so as to face between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17, and between them. The air supply part 30 which supplies air (compressed air) so that an air layer may be formed is provided.

As shown in FIG. 3C, the air supply unit 30 includes an air supply line 31 that communicates with and is connected to the air supply port 34.
In the present embodiment, the air supply line 31 is branched from the compressed air line 6. In addition, it replaces with the aspect which branches from the line which supplies compressed air to the air cylinder 40 in this way, and provides the air supply line 31 as an aspect which connects the said air supply line 31 directly to the compressed air source 5. Also good. In this case, devices such as a regulator or a pressure reducing valve or a pressure gauge may be arranged in the line as necessary.

  The air supply line 31 includes an open / close valve 32 such as an electromagnetic valve for opening / closing the air supply line 31 and a flow rate adjusting valve 33 including a needle valve (throttle valve) and the like toward the downstream side in this order. It is arranged. By opening the on-off valve 32, compressed air from the compressed air source 5 is supplied between the lower surface 20 a of the slide valve body 20 and the bottom surface 17 a of the hollow guide portion 17 through the air supply port 34. Further, by adjusting the flow rate adjustment valve 33, it is possible to adjust the flow rate of the compressed air supplied between the lower surface 20 a of the slide valve body 20 and the bottom surface 17 a of the hollow guide portion 17 via the air supply port 34. Has been. The on-off valve 32 is not limited to a single-acting solenoid spring return type solenoid valve as shown in the figure, and may be any on-off valve as long as the air supply line 31 can be opened and closed. An on-off valve such as a solenoid valve or a pilot operation valve may be employed. Further, the flow rate adjustment valve 33 is not limited to the needle valve as shown in the figure, and any flow rate adjustment valve can be used as long as a relatively small flow rate can be manually adjusted in a multistage or stepless manner. You may make it employ | adopt a flow regulating valve.

  In this embodiment, the air supply port 34 is provided so as to open to the bottom surface 17 a of the hollow guide portion 17 of the valve body housing 10 as shown in FIGS. 1 and 2. In the illustrated example, an example in which a plurality of air supply ports 34 are provided through the bottom wall portion 14 of the valve body housing 10 is shown. The plurality of air supply ports 34 are open toward the lower surface 20a of the slide valve body 20, and are provided so as to be aligned with the slide valve body 20 that is slid in the hollow guide portion 17 at all times. It has been. That is, the plurality of air supply ports 34 are provided so as to always face the lower surface 20a of the slide valve body 20 to be slid.

  In the illustrated example, four air supply ports 34 are provided. As shown in FIGS. 1 and 2, two air supplies are provided at intervals along the sliding direction (longitudinal direction in the illustrated example). The example which provided the opening | mouth 34 so that it might open to each of the both-sides edge part (both side wall parts 15 and 15 side edge part, width direction both edge part) of the bottom face 17a of the hollow guide part 17 is shown. Moreover, the two air supply ports 34 and 34 provided in the back side among these four air supply ports 34 were slid to the front side, as shown to FIG. 1 (a) and FIG.2 (b). Two air supply ports 34, 34 provided on the front side of the four air supply ports 34 are provided so as to open toward the lower surface 20 a of the rear side end portion of the slide valve body 20. As shown in FIG. 2B and FIG. 2B, it is provided so as to open toward the lower surface 20a of the front end portion of the slide valve body 20 slid to the rear side.

Moreover, in this embodiment, the concave groove 23 which receives the compressed air supplied from the air supply port 34 of the air supply part 30 is formed on the lower surface 20a of the slide valve body 20 along the slide direction (longitudinal direction in the illustrated example). Provided.
In this embodiment, as shown in FIGS. 2B and 3B, the concave grooves 23 are formed on both sides in the width direction of the through holes 21 and 22 provided at intervals along the sliding direction. , And provided in the shape of an elongated groove along the longitudinal direction. Each of these concave grooves 23 and 23 is positioned so as to be vertically aligned with the two air supply ports 34 and 34 that are opened at both ends in the width direction of the bottom surface 17a of the hollow guide portion 17 as described above. Is provided. That is, each of the concave grooves 23 and 23 is provided along the longitudinal direction at both end portions in the width direction of the slide valve body 20, and when the slide valve body 20 is slid, these two airs The supply ports 34 and 34 are always provided so as to open toward the concave grooves 23 and 23 on both sides in the width direction.

  Further, as shown in FIG. 3B, the concave grooves 23 and 23 have wide portions that are wide at both ends in the longitudinal direction. As shown in FIG. 2B, the wide portion is formed on the rear side toward the wide portion on the rear side of the concave grooves 23 and 23 when the slide valve body 20 is slid forward. When the slide valve body 20 is slid rearward so that the two air supply ports 34 and 34 are opened, the front side described above toward the wide portion on the front side of the concave grooves 23 and 23. The two air supply ports 34, 34 are formed so as to open (see also FIG. 1). In the illustrated example, the longitudinal both ends of the concave grooves 23 and 23 formed in the shape of elongated grooves along the longitudinal direction at the both lateral ends of the slide valve body 20 are the longitudinal directions of the slide valve body 20. The example which formed the wide part so that it may bulge toward the center side of the direction (width direction) orthogonal to is shown. By providing such a wide portion, the air supplied from the air supply port 34 can be smoothly received and guided and diffused along the longitudinal direction of the concave groove 23.

The depth dimension of the concave groove 23 depends on the mass of the slide valve body 20, the area of the lower surface 20a, the pressure and flow rate of the supplied compressed air, etc., but may be a relatively shallow dimension of less than 1 mm. It may be a micro-order depth dimension.
In addition, the groove 23 is not limited to the one formed in the width direction at both end portions as shown in the figure, and the two groove grooves may be formed so as to communicate with each other at both end portions in the longitudinal direction. Further, it may be formed so as to communicate with each other at the central portion in the longitudinal direction.

In the switching valve device 1 having the air supply unit 30 configured as described above, the open / close valve 32 is opened, and the compressed air from the compressed air source 5 is slid through the lines 6, 31 and the air supply port 34. By supplying between the lower surface 20a of the body 20 and the bottom surface 17a of the hollow guide portion 17, wear of the slide valve body 20 and the valve body housing 10 accommodating the slide valve body 20 can be effectively prevented, and the slide The valve body 20 can be smoothly slid.
That is, an air layer is formed between the lower surface 20 a of the slide valve body 20 and the bottom surface 17 a of the hollow guide portion 17 so as to float the slide valve body 20 against the dead weight of the slide valve body 20 that is slid in the substantially horizontal direction. To form. Thereby, the sliding resistance (friction resistance) between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17 can be reduced or substantially eliminated, and wear and seizure can be effectively prevented. Thereby, the slide valve body 20 can be smoothly slid.

In addition, the thickness dimension of the air layer, that is, the flying height of the slide valve body 20, the size of the slide valve body 20 and the hollow guide portion 17, the mass of the slide valve body 20, the transport mode of the granular material, You may make it set according to the particle size etc. of a granular material. For example, a clearance (clearance) between the valve body housing 10 that slidably accommodates the slide valve body 20 and the slide valve body 20, particularly between the upper surface 20 b of the slide valve body 20 and the top surface 17 b of the hollow guide portion 17. The clearance (clearance) is a slight clearance (for example, 1 μm to 1 μm) so that the slide valve body 20 can be slid and the leakage of transport air from the clearance and the biting of the granular material can be effectively reduced. It may be set to be about 50 μm, and the flying height may be about the same as the gap.
In addition, for example, when the switching valve device 1 itself is large and the particle size of the granular material to be transported is large, and is incorporated in a transportation path for transporting this by its own weight, the above-described gap and flying height are For example, it does not cause much trouble even in the millimeter order.

Further, according to the switching valve device 1 according to this embodiment, the sliding resistance (friction resistance) between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17 can be reduced or substantially eliminated. The degree of freedom in selecting the materials for forming them can be increased, and processing such as heat treatment and surface treatment can be omitted, so that material costs and processing costs can be reduced.
Further, since air is supplied between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17, a positive pressure is generated between them, and the granular material, dust, etc. transported between them. Can be prevented, and the cleaning required when changing materials can be omitted.

  Note that the timing for supplying the compressed air between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17 as described above is always during the operation of the switching valve device 1. , May be supplied. Alternatively, it may be supplied only when the slide valve body 20 is slid in conjunction with the slide operation of the slide valve body 20, and the time before and after the slide valve body 20 is slid (for example, around 1 second or several seconds). It may be supplied only when sliding.

In the present embodiment, the air supply port 34 of the air supply unit 30 is provided so as to open to the bottom surface 17 a of the hollow guide unit 17. Thereby, it can be made a simple structure compared with the case where the air supply port is provided on the slide valve body 20 side to be slid, that is, the moving side.
Instead of such an aspect, an air supply port of the air supply unit may be provided so as to open on the lower surface 20a of the slide valve body 20. In this case, for example, an air supply line may be connected to the front end face or the rear end face of the slide valve body, and an air path to the air supply port may be provided in the slide valve body.
Moreover, in this embodiment, although the example which has arrange | positioned the side provided with the 1st opening 11 of the valve body housing 10 to the downward side is shown, the example which provided the air supply port 34 corresponding to it is shown, When the side of the body housing 10 provided with the first opening 11 is arranged on the upper side, that is, when the switching valve device 1 is arranged upside down from the illustrated example, What is necessary is just to provide an air supply port so that the top wall part 13 of the upper side of the body housing 10 of illustration may be penetrated, or it may open to the upper surface 20b of the upper side of illustration of the slide valve body 20. That is, the top wall portion 13 on the upper side in the figure may be grasped as the bottom wall portion of the valve body housing, and the upper surface 20b on the upper side in the figure may be grasped as the lower surface of the slide valve body.

  Furthermore, in this embodiment, since the plurality of air supply ports 34 are provided at intervals along the longitudinal direction at each of the width direction both side end portions of the bottom surface 17a of the hollow guide portion 17, the slide valve body 20 is provided. It is possible to float stably. That is, the slide valve body 20 can be prevented from being inclined in the longitudinal direction or the width direction, and can be smoothly slid along the substantially horizontal direction.

  Furthermore, in this embodiment, the concave groove 23 for receiving the air supplied from the air supply port 34 of the air supply unit 30 is provided on the lower surface 20a of the slide valve body 20 along the slide direction. Thereby, in order to form the said air layer, the pressure receiving area required when the lower surface 20a of the slide valve body 20 is floated from the bottom face 17a of the hollow guide part 17 can be enlarged effectively. In other words, the air supplied from the air supply port 34 can be smoothly guided and diffused between the lower surface 20 a of the slide valve body 20 and the bottom surface 17 a of the hollow guide portion 17 by the concave groove 23. As a result, the diameter of the air supply port 34 required to form an air layer, that is, to float the slide valve body 20 is relatively small (for example, about 1 mm to several mm), or air supply is performed. The number of openings 34 can be reduced (for example, about four as shown in the figure).

In the present embodiment, an example is shown in which the concave groove 23 for receiving the air supplied from the air supply port 34 of the air supply unit 30 is provided on the lower surface 20a of the slide valve body 20 along the slide direction. Instead of or in addition to this, a concave groove for receiving the air supplied from the air supply port 34 of the air supply unit 30 may be provided on the bottom surface 17a of the hollow guide portion 17 along the slide direction. That is, you may make it provide the concave groove which expands the air supply port 34 opened to the bottom face 17a of the hollow guide part 17 in the bottom face 17a of the hollow guide part 17. FIG. Even in such an aspect, the same effects as described above can be obtained. Further, when the switching valve device 1 is arranged upside down as described above, air is supplied to the upper surface 20b of the slide valve body 20 on the upper side of the drawing and / or the upper surface 17b of the hollow guide portion 17 on the upper side of the drawing. You may make it provide the ditch | groove which receives the air supplied from the air supply port 34 of the part 30 along a slide direction.
Further, such a concave groove may not be provided. In this case, the diameter, shape, number, installation location, etc. of the air supply port are appropriately set so that the air layer is formed, that is, the slide valve body 20 can be lifted. Also good. For example, a large number of air supply ports having the same diameter as described above may be provided, or a long slit-like air supply port may be formed along the slide direction.

In the present embodiment, the flow rate adjustment valve 33 is provided in the air supply line 31 that is connected to and connected to the air supply port 34 of the air supply unit 30. This prevents the upper surface 20b of the slide valve body 20 from being pressed against or brought into contact with the top surface 17b of the hollow guide portion 17 due to the floating of the slide valve body 20, that is, ensuring the clearance is relatively simple and stable. Can be adjusted.
When the flying height is small as described above, the flying height is approximately proportional to the flow rate of the compressed air to be supplied, and increasing the flow rate increases the flying height, while decreasing the flow rate increases the flying height. There is a tendency to become smaller. In addition, air supplied between the lower surface 20 a of the slide valve body 20 and the bottom surface 17 a of the hollow guide portion 17 leaks from the front opening of the hollow guide portion 17 and the openings 11, 12, 12 of the valve body housing 10. In addition, by adjusting the air to a predetermined flow rate, the slide valve body 20 can be adjusted relatively easily and stably so as to be in an equilibrium state in which the slide valve body 20 is floated with a predetermined flying height. As a result, by adjusting the flow rate, the flying height can be adjusted to an appropriate level relatively easily and stably while securing the gap.
Such adjustment of the flow rate is such that the slide valve body 20 smoothly slides in the hollow guide portion 17 in a substantially no-load state before or after the switching valve device 1 is incorporated in the middle of the transportation path. You may make it adjust beforehand. Further, when the flow rate is adjusted in this way, the pressure of the supplied air may be set to a constant pressure by a regulator or a pressure reducing valve.

In the case where there is no problem even if the flying height is relatively large as described above, for example, by providing a pressure adjusting valve or the like in the air supply line and adjusting the pressure of the supplied air, the flying height It is good also as an aspect adjusted so that may become an appropriate grade.
In addition, instead of the flow rate adjustment valve that allows manual flow rate adjustment as described above, flow rate increase / decrease control can be performed automatically, for example, a flow rate adjustment valve such as a motor valve or a diaphragm valve capable of opening control. May be adopted. Alternatively, the flow rate per predetermined time may be controlled to increase / decrease by controlling the opening / closing valve capable of opening / closing control at a relatively high speed.

When a valve capable of automatically increasing or decreasing the flow rate as described above is adopted, the flow rate is adjusted so that the flying height is appropriate, i.e., the flying height is small while securing the gap. Increase / decrease control may be performed. In this case, various detection means capable of detecting a contact state and a non-contact state between the bottom surface 17a of the hollow guide portion 17 of the valve body housing 10 and the lower surface 20a of the slide valve body 20 are provided, and a non-contact state by the detection means is provided. On the basis of this detection, the flow rate may be automatically adjusted so as to increase or decrease or increase from zero.
For example, the bottom wall portion 14 of the valve body housing 10 and the slide valve body 20 are made of a conductive material, a low voltage or the like is applied to them, and a current value is detected by an ammeter or the like as detection means. The flow rate may be increased from the zero state until the value becomes zero, that is, until the non-contact state is reached.
Alternatively, a magnetic sensor or the like may be embedded in these contact surfaces as the detection means, and the non-contact state may be detected by the magnetic sensor.

Alternatively, for example, a pressure sensor that detects the pressure (back pressure) of air supplied to the air supply port 34 is provided as the detection means, and the measured value of the pressure sensor is reduced to a predetermined pressure, that is, It is good also as an aspect which makes a flow volume increase until it will be in a non-contact state and will fall to a predetermined pressure by the air leak from each part.
Alternatively, an optical sensor that detects the non-contact state may be provided as the detection unit, and the flow rate may be increased until the optical sensor detects the non-contact state.
Alternatively, a sensor for detecting a load on the piston rod 43 or the like of the air cylinder 40 is provided as the detection means, and the load on the piston rod 43 or the like is kept in a non-contact state until the load is reduced to a predetermined value, that is, The flow rate may be increased until the value decreases.

Further, a detecting means similar to the above that can detect a contact state and a non-contact state between the top surface 17b of the hollow guide portion 17 of the valve body housing 10 and the upper surface 20b of the slide valve body 20 is further provided. In addition to the detection, the flow rate automatic adjustment may be performed so as to increase or decrease the flow rate of the air supply unit 30 based on the detection of the contact state and the non-contact state by the upper detection unit. That is, based on the detection of the contact state and the non-contact state by the upper and lower detection means so that the upper surface 20b and the lower surface 20a of the slide valve body 20 are not in contact with the top surface 17b and the bottom surface 17a of the hollow guide portion 17. The flow rate of the air supply unit 30 may be controlled to increase or decrease.
The detection means is not limited to the above example, and various other detection means can be employed.
Furthermore, it is good also as an aspect which sets the flow volume and pressure of the air supplied previously so that it may become an appropriate flying height, without providing the above various flow control valves, pressure control valves, etc.

Moreover, in this embodiment, since the switching valve device 1 as described above is used as the sliding valve device, either one of the two transport routes 3 and 4 and the one transport route 2 are selectively switched. And two different types of granular materials can be switched and transported.
Moreover, since the slide valve body 20 used for such a switching valve apparatus 1 needs to provide the two through-holes 21 and 22 diagonally as mentioned above, the thickness dimension of the slide valve body 20 is comparatively comparative. As a result, it tends to become heavier and tends to cause wear and seizure. According to the present embodiment, as described above, an air layer is formed between the lower surface 20a of the slide valve body 20 and the bottom surface 17a of the hollow guide portion 17 by the air supply unit 30. It is also suitable for the switching valve device 1 as a slide type valve device provided with a slide valve body 20 having two through holes 21 and 22.

The transport paths 2, 3, and 4 that are connected to the openings 11, 12, and 12 of the valve body housing 10 have a pipe shape or a tube shape that transports or transfers the granular material by its own weight. It is not limited to things. For example, a measuring unit such as a measuring cup or a measuring tank that is connected to the first opening 11 may be grasped as the first transport path 2. In an aspect in which such a weighing unit is connected to the first opening 11, for example, a second lower end of a storage unit such as a material tank or a material hopper is connected to one of the pair of second openings 12. Ascertained as the transport path 3, the material transported or discharged from the storage section is stored in the measuring section, and the slide valve body 20 is slid as described above to communicate with the other of the pair of second openings 12. It is good also as an aspect which transports the material stored by the measurement part toward the connected 3rd transport path 4. FIG.
The slide valve body 20 may be slid after the powder material passes through the switching valve device 1, and the powder material slides while the switching valve device 1 is passing. You may do it. Such a slide mode of the slide valve body 20 can be appropriately set according to the type of the powder material, the transport source, and the transport destination of the transport switching system in which the switching valve device 1 is incorporated.

Next, an example of a transport switching device in which a plurality of switching valve devices 1 according to the present embodiment are arranged will be described with reference to FIG.
The transportation switching device 50 according to the present example includes a plurality of switching valve devices 1 arranged in parallel, and transportation as a first switching unit connected to a transportation destination side transportation path 68 that transports the granular material toward the transportation destination. A transport source side switching unit as a second switching unit that is connected in parallel to the transport side transport path 67 that transports the particulate material from the transport source by arranging the front side switching unit 50A and a plurality of switching valve devices 1 in parallel. 50B. In this example, each switching valve device 1 of the transportation source side switching unit 50B is arranged upside down with respect to the switching valve device 1 described based on FIGS. As described above, the air supply port 34, the concave groove 23, and the like are provided on the opposite side of the switching valve device 1 described with reference to FIGS.

The transport destination side switching unit 50 </ b> A communicates the first opening 11 and the pair of second openings 12 of the switching valve devices 1, 1 adjacent to each other (four in the illustrated example) of the switching valve devices 1. Let me connect. In this example, the example which connected these with the connecting pipe 57 is shown.
Similarly to the transportation destination side switching unit 50A, the transportation source side switching unit 50B also includes a first opening 11 and a pair of first switching valves 1 and 1 adjacent to each other (five in the illustrated example) of the switching valve devices 1. One of the two openings 12 is connected and connected by a connecting pipe 57.
Moreover, the 1st opening 11 of the switching valve apparatus 1 arrange | positioned in the juxtaposition direction one end side (in the figure example lower side) of transport destination side switching unit 50A, and the juxtaposition direction one end of transport source side switching unit 50B The first opening 11 of the switching valve device 1 disposed on the side (the uppermost side in the figure) is connected in communication, and in this example, as in the above example, these are connected by the connection pipe 58. Show.

In addition, the second openings 12 and 12 of the switching valve devices 1 and 1 disposed on the other end side in the juxtaposition direction of the transport destination side switching unit 50A and the transport source side switching unit 50B, respectively, and disposed therebetween. Connection pipes 56 are connected to the other of the second openings 12 of the respective switching valve devices 1.
The connection pipe 56 of the transport destination side switching unit 50A is connected to the transport destination side transport path 68 for transporting the granular material toward the transport destination, while the connection pipe 56 of the transport source side switching unit 50B is connected to the connection pipe 56 of the transport destination side switching unit 50A. A transportation source side transportation path 67 that transports the granular material from the transportation source is connected.

Further, the transport switching device 50 according to this example includes a compressed air supply switching unit 52 configured by combining a drive air line switching valve 47 (see FIG. 3C) such as a plurality of solenoid valves, and the compressed air supply. A control panel 51 that controls the switching of the solenoid valve and the like of the switching unit 52 to drive and control the air cylinder 40 (see FIG. 1 and the like) of each switching valve device 1, and a housing 55 in which these and each switching valve device 1 are incorporated. And. In the illustrated example, two compressed air supply switching units 52 and 52 are provided.
A compressed air line 53 connected to the compressed air source 5 such as a compressor is branched and connected to the compressed air supply switching unit 52. The compressed air line 53 is provided with an air adjustment unit 54 including a manual open / close valve as described above, a regulator for adjusting the pressure of compressed air to be supplied, a pressure reducing valve, a pressure gauge, or the like. The compressed air supply switching unit 52 and the ports 45 and 45 (see FIG. 1 and the like) of the air cylinder 40 of each switching valve device 1 are connected by a driving air line, although not shown. . Although not shown, the compressed air line 53 (or the air adjusting unit 54) branches from the air supply line 31 (see FIG. 3C) of the air supply unit 30 of each switching valve device 1. Connected, and the above-described opening / closing control of the opening / closing valve 32 is performed by a CPU or the like provided in the control panel 51.

  The control panel 51, the compressed air supply switching unit 52, and the on-off valve 32 of each switching valve device 1 are connected by a signal line or the like. The control panel 51 is provided with a storage unit that stores a CPU, a predetermined program, and the like. For example, a granular material from a transportation destination connected to each switching valve device 1 of the transportation destination side switching unit 50A. The air cylinder 40 of each switching valve device 1 is driven based on a material request signal and the like, and the slide valve body 20 is slid to control the transport direction. In addition, as described above, the opening / closing valve 32 is controlled to open and close, and the air that floats the slide valve body 20, that is, the air that forms the air layer is supplied.

In the illustrated example, one of the pair of second openings 12 (second opening 12 on the rear side in the drawing) of the lowermost switching valve device 1 of the transportation source side switching unit 50B and the uppermost stage of the transportation destination side switching unit 50A. One of the pair of second openings 12 of the switching valve device 1 (the second opening 12 on the rear side in the drawing) is disposed between the first through hole 21 and the first opening 11 and between them. In addition, a state is shown in which the switching valve devices 1 communicate with each other via the first opening 11, the second opening 12 on the rear side in the drawing, and the first through hole 21 (see FIG. 1 and the like).
By driving the air cylinder 40 of each switching valve device 1 and sliding the slide valve body 20, any one of the plurality of transport side transport paths 67 and any of the plurality of transport destination side transport paths 68 are selected. The heel can be selectively switched for communication. In other words, multi-directional vs. multi-directional transport switching can be performed by sliding control of the slide valve body 20 of each switching valve device 1.

According to the transport switching device 50 configured as described above, for example, it is easy to switch and control the slide valve bodies 20 of the plurality of switching valve devices 1 substantially simultaneously as compared to a conventional rotary header type transport switching device or the like. The transportation direction can be switched relatively quickly. Further, since the slide valve body 20 can be slid in the valve body housing 10 to change the transport direction, the granular material material leaks, spills, bites, etc., compared to a conventional rotary header type transport switching device or the like. Can also be suppressed.
Furthermore, as described above, according to the switching valve device 1 according to the present embodiment, the slide valve body 20 can be smoothly slid, so that stable switching control can be performed.
Further, as described above, if the gap and the flying height are made relatively small, the leakage of the transportation air can be reduced. Even when a plurality of switching valve devices 1 are arranged in parallel as in this example, the leakage of the transportation air is caused. A transportation trouble (for example, piping blockage etc.) etc. can be prevented, or a transportation air source such as a blower can have a relatively small capacity.

  Note that the number of switching valve devices 1 provided in each switching unit 50A, 50B is not limited to the number in the illustrated example, and a number corresponding to the number of transportation sources and the number of transportation destinations may be provided. That is, according to the transport switching device 50 according to the present example, by increasing or decreasing the number of the switching valve devices 1, it is possible to easily construct a transport direction switching system that can flexibly cope with the increase or decrease of the transport source or the transport destination. .

  In the example shown in the figure, a plurality of switching valve devices 1 respectively connected to a plurality of transport destination side transport paths 68 are connected in series to a transport destination side switching unit 50A and a plurality of transport source side transport paths 67, respectively. Although the transportation switching device 50 including the transportation source side switching unit 50B in which a plurality of switching valve devices 1 are arranged in series is illustrated, this is not a limitation. For example, the switching valve device 1 connected to the transportation source side transportation path 67 is further incorporated between the plurality of switching valve devices 1 of the transportation destination side switching unit 50A in accordance with the required transportation direction switching mode. A side-by-side configuration or a side-by-side configuration in which the switching valve device 1 connected to the transportation destination side transport path 68 is further incorporated between the switching valve devices 1 of the transportation source side switching unit 50B may be adopted. Even in such an aspect, although the number of transport direction switching patterns is reduced as compared with the above-described example, multi-directional versus multi-directional transport switching can be performed.

  Furthermore, in the example of the figure, the transport switching device 50 including the transport destination side switching unit 50A and the transport source side switching unit 50B is shown, but these are understood as the transport switching devices 50A and 50B. Also good. In other words, a plurality of switching valve devices 1 are used as a transportation switching device 50A (50B) in which the first opening 11 of the adjacent switching valve devices 1 and one of the pair of second openings 12 are in communication with each other. You may grasp. According to such a transport switching device 50A (50B), by controlling the slide valve body 20 of each switching valve device 1, one end side in the juxtaposed direction (the lowermost stage side of the transport switching device 50A, the transport switching device 50B). The other switching valve device 1 includes the other of the second openings 12 of the switching valve device 1 with respect to the transport path connected to the first opening 11 of the switching valve device 1 disposed on the uppermost side). One of the second openings 12 of the switching valve device 1 disposed on the other side of the second opening 12 and the other end side in the juxtaposed direction (the uppermost stage side of the transportation switching apparatus 50A, the lowermost stage side of the transportation switching apparatus 50B) It is possible to communicate by switching the transport route connected to each other. That is, one-way to multi-way transportation switching can be performed.

Next, an example of a granular material transport switching system incorporating the transport switching device 50 according to this example will be described with reference to FIG. In FIG. 5, the transport switching device 50 is shown in a simplified manner.
The granular material transport switching system 60 according to the present example includes a plurality of (four in the illustrated example) molding machines 63 as transport destinations, and a plurality of (five in the illustrated example) drying apparatuses 64 as transport sources. The transport switching device 50 that switches these transport directions, a control panel 61 that controls the transport switching system 60, and a suction air source 62 as pneumatic transport means are provided. A material source 65 such as a material tank is connected to the drying device 64 via an air transport pipe 66.

The suction air source 62 includes a filter, a suction blower, and the like that capture dust contained in the suction air, and one end of an air suction pipe 69 is connected thereto. The other end side of the air suction pipe 69 is branched, and each branch pipe is connected to a collector installed on the molding machine 63.
The collector installed on the molding machine 63 is switched by the transport switching device 50 and collects the granular material transported via the transport destination side transport path 68. In addition, a storage unit is provided below the collector to temporarily store the particulate material collected by the collector and supply the material to the molding machine 63. The storage unit is provided with a level meter or the like that outputs a material request signal, and this level meter is connected to the control panel 61 by a signal line or the like.
The molding machine 63 may be, for example, an injection molding machine that performs injection molding of a resin molded product, an injection molding machine for other materials, an extrusion molding machine, a compression molding machine, or the like.

The drying device 64 stores a granular material, a hopper for storing and drying, a heated gas supply unit that supplies heated gas to the hopper, and a granular material that is transported from the material source 65 via the air transport pipe 66. A collector that collects and feeds into the hopper, a material discharge section such as a discharge valve provided at the lower end of the hopper, and the like are provided. Moreover, it is good also as what was equipped with the dehumidifier etc. which circulate and supply the dehumidified gas to a hopper via a heated gas supply part.
The collector of the drying device 64 is connected to an air suction pipe or the like connected to an air source, and is appropriately collected from the material source 65 based on a material request signal such as a level meter provided in the hopper. The particulate material is transported to the vessel and from the collector to the hopper. The air source for transporting the granular material to the drying device 64 may also be used as the suction air source 62 described above.

  The control panel 61 includes a CPU that controls each unit, a storage unit that stores a predetermined program, a display unit that performs various displays, an operation unit that receives inputs such as various settings, and the like. The above-described units are connected to the CPU of the control panel 61 by signal lines or the like, and the suction air source 62 is driven based on a level meter request signal of the storage unit on the molding machine 63 according to a predetermined program. Control, transport direction switching control of the transport switching device 50, discharge control of the material discharge unit of the drying device 64, and the like are performed. For example, when transporting the granular material stored in one of the drying devices 64 toward one of the molding machines 63, switching of the transport switching device 50 in which these are connected by the transport paths 67 and 68, respectively. The slide valve body 20 (see FIG. 1 and the like) of each switching valve device 1 is slid so that the second openings 12 and 12 (see FIG. 4) of the valve devices 1 and 1 communicate with each other. When the suction air source 62 is driven, the granular material can be transported from the desired drying device 64 among the plurality of drying devices 64 to the desired molding machine 63 among the plurality of molding machines 63. Become.

Further, in the transportation switching system 60 according to this example, for example, when the molding machine 63 is added, the switching valve device 1 is further added to the transportation destination side switching unit 50A of the transportation switching device 50. Then, a transportation destination side transportation path 68 is connected to the switching valve device 1 as shown by a two-dot chain line in the figure, and the transportation destination side transportation path 68 is connected to a collector or the like on the molding machine 63. do it.
Similarly, when the drying device 64 is additionally installed, the switching valve device 1 is further added to the transportation source side switching unit 50B of the transportation switching device 50, and the switching valve device 1 is connected to the illustrated two-dot chain line. As shown, the transportation source side transportation path 67 is connected, and the transportation source side transportation path 67 is connected to the material discharge portion at the lower end of the hopper of the drying device 64.
Further, when the number of molding machines 63 and drying devices 64 decreases, the corresponding switching valve device may be removed, and the other of the second openings 12 of the corresponding switching valve device is slid into a state of being shut off. The valve body 20 may be slid.

According to the transport switching system 60 according to the present example having the above-described configuration, since the transport switching device 50 is provided, the number of molding machines 63 as the transport destination is increased or decreased, and the drying device 64 (that is, the material source) as the transport source. It is possible to flexibly cope with the increase / decrease.
In this example, the mode in which the granular material from the drying device 64 is pneumatically transported toward the molding machine 63 side by suction transportation is illustrated, but the aspect may be that in which pneumatic transportation is performed by pressure feeding.
Further, the transportation destination is not limited to the molding machine 63 as described above, and a temporary storage unit such as a blending device that blends a plurality of types of powdered material materials at a predetermined blending ratio, a weighing hopper, or the like may be used as the transportation destination. .
Furthermore, the transportation source is not limited to the drying device 64 as described above, and a material source such as a material tank may be used as the transportation source, such as a blending device that blends a plurality of types of granular material at a predetermined blending ratio. A temporary storage unit, a weighing hopper, or the like may be used as a transportation source.
Furthermore, in this example, the transportation switching system 60 provided with a plurality of transportation sources and a plurality of transportation destinations is illustrated. However, as a transportation switching system provided with a single transportation source and a plurality of transportation destinations. It is good also as a transportation switching system provided with a plurality of transportation sources and a single transportation destination. In this case, the above-described transport switching devices 50A, 50B and the like may be appropriately applied instead of the transport switching device 50.

Next, another embodiment according to the present invention will be described with reference to the drawings.
FIG.6 and FIG.7 is explanatory drawing for demonstrating the switching valve apparatus as a slide type valve apparatus which concerns on 2nd Embodiment.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or simplified.
The switching valve device 1A according to the present embodiment is mainly different from the switching valve device 1 according to the first embodiment in the configuration of the valve body driving unit that slides the slide valve body 20. In this embodiment, it replaces with the air cylinder 40, the valve body drive air supply part 25 is provided, and the connection member etc. are not connected also to the slide valve body 20 corresponding to this.

  As shown in FIGS. 6 and 7, the valve body driving air supply unit 25 is provided on each of the end plate 16A, 18 that seals both ends in the sliding direction of the hollow guide portion 17A of the valve body housing 10A. 20 has valve body drive air supply ports 29, 29 that open toward the respective end faces 20c, 20c, and is configured to selectively supply air to these valve body drive air supply ports 29, 29. Moreover, this valve body drive air supply part 25 has the drive air line 26 connected to the compressed air source 5 through the same compressed air line 6 as the above, as shown in FIG.7 (c). The driving air line 26 is provided with a driving air line switching valve 27 similar to that described above, and the compressed air is selectively supplied to the valve body driving air supply ports 29 and 29. This is done via each drive air line connected to each of the downstream ports of the. In FIG. 7C, reference numeral 28 denotes each of the driving air line 26 (or each valve body driving air supply port 29, 29) branched and connected to each valve body driving air supply port 29, 29. Is a flow rate adjusting valve (speed controller, speed control valve) with a check valve similar to the above.

  In the switching valve device 1A configured as described above, as shown in FIG. 6A, the valve body drive air supply port 29 provided on the end plate 16A side (the right side in FIG. 6A) is provided. If the compressed air is introduced into the hollow guide portion 17 </ b> A via the slide valve body 20, the slide valve body 20 moves toward the front (left side in FIG. 6A) and is moved by the first through hole 21 of the slide valve body 20. The first opening 11 of the valve body housing 10A communicates with the second opening 12 on the rear side (the right side in FIG. 6A) (see also FIGS. 7A and 7B). In this state, the second opening 12 on the front side of the valve body housing 10 </ b> A is substantially closed by the slide valve body 20. As a result, the first transport path 2 communicated with the first opening 11 and the second transport path 3 communicated with the second opening 12 on the rear side communicate with each other and communicate with the second opening 12 on the front side. The third transport path 4 is blocked.

  On the other hand, as shown in FIG. 6B, the compressed air is introduced into the hollow guide portion 17A through the valve body drive air supply port 29 provided on the end plate 18 side (left side in FIG. 6B). Is introduced, the slide valve body 20 moves rearward (to the right side in FIG. 6B), and the second through-hole 22 of the slide valve body 20 and the first opening 11 of the valve body housing 10A. The second opening 12 on the front side (left side in FIG. 6B) communicates (see also FIG. 7B). In this state, the second opening 12 on the rear side of the valve body housing 10 </ b> A is substantially closed by the slide valve body 20. As a result, the first transport path 2 communicated with the first opening 11 communicates with the third transport path 4 communicated with the second opening 12 on the front side, and the second transport path 12 communicated with the second opening 12 on the rear side. 2 The transport path 3 is blocked.

According to the switching valve device 1A according to the present embodiment having the above-described configuration, a space for providing an actuator as a valve body drive unit such as an air cylinder for sliding the slide valve body 20 is not required, and the size reduction can be achieved. Can be planned.
It should be noted that a cushion mechanism is provided for reducing impact, noise, vibration, etc. caused by a collision between the slide direction both end surfaces of the slide valve body 20 slid in the hollow guide portion 17A and both slide direction inner wall surfaces of the hollow guide portion 17A. May be. As such a cushion mechanism, a mechanism (air cushion mechanism) for adjusting the amount of air leakage in the hollow guide portion 17A on the front side in the sliding direction, an aspect in which an elastic body such as rubber is provided, oil, etc. It is also possible to use a shock absorber or the like utilizing the flow resistance.
Further, the switching valve device 1A according to the present embodiment is applicable to the above-described various transportation switching devices and transportation switching systems.

Next, still another embodiment according to the present invention will be described with reference to the drawings.
FIG. 8 is an explanatory diagram for explaining a switching valve device as a sliding valve device according to the third embodiment.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or simplified.

The switching valve device 1B according to the present embodiment further includes an upper air supply unit 35 that supplies air between the upper surface 20b of the slide valve body 20A and the top surface 17b of the hollow guide portion 17 of the valve body housing 10B. This is mainly different from the switching valve device 1 according to the first embodiment.
The upper air supply part 35 has an upper air supply port 38 provided so as to face between the upper surface 20b of the slide valve body 20A and the top surface 17b of the hollow guide part 17, and an air layer is formed between them. It is set as the structure which supplies air (compressed air) so that it may be formed.
As shown in FIG. 8C, the upper air supply unit 35 includes an upper air supply line 36 that is connected to and communicates with the upper air supply port 38.

In the present embodiment, the upper air supply line 36 is provided to be branched from the air supply line 31 of the air supply unit 30 described above. In the illustrated example, the upper air supply line 36 is branched and connected to the air supply line 31 on the downstream side of the on-off valve 32.
It should be noted that the upper air supply line 36 is directly connected to the compressed air source 5 instead of the embodiment in which the upper air supply line 36 is provided by branching from the line for supplying the compressed air to the air supply unit 30. It is good also as an aspect. In this case, devices such as a regulator or a pressure reducing valve, a pressure gauge, and an on-off valve may be provided in the line as necessary.
The upper air supply line 36 is provided with a flow rate adjusting valve 37 including a needle valve (throttle valve) similar to the above. By adjusting the flow rate adjusting valve 37, the flow rate of the compressed air supplied between the upper surface 20b of the slide valve body 20A and the top surface 17b of the hollow guide portion 17 can be adjusted via the upper air supply port 38. It is said that.

In the present embodiment, the upper air supply port 38 is provided so as to open to the top surface 17b of the hollow guide portion 17 of the valve body housing 10B, as shown in FIGS. In the example shown in the figure, a plurality of upper air supply ports 38 are provided through the top wall portion 13A of the valve body housing 10B. The plurality of upper air supply ports 38 are open toward the upper surface 20b of the slide valve body 20A, and, similar to the air supply port 34 described above, the slide valve body 20A that is slid in the hollow guide portion 17 and always, It is provided so as to be a position that aligns vertically. That is, the plurality of upper air supply ports 38 are provided so as to always face the upper surface 20b of the slide valve body 20A to be slid.
In the present embodiment, as with the air supply port 34 described above, an example in which four upper air supply ports 38 are provided is shown, and two airs are spaced apart along the slide direction (longitudinal direction in the illustrated example). The supply ports 38 are provided so as to open to both end portions of the top surface 17b of the hollow guide portion 17 (both side wall portions 15, 15 side end portions, width direction both end portions). In the present embodiment, each of the four upper air supply ports 38 is provided so as to be substantially aligned with each of the air supply ports 34 described above.

Further, in the present embodiment, as shown in FIG. 8B, the upper concave groove 24 that receives the compressed air supplied from the upper air supply port 38 of the upper air supply unit 35 is formed on the upper surface 20b of the slide valve body 20A. They are provided along the sliding direction (longitudinal direction in the figure).
The upper concave groove 24 has substantially the same configuration as the concave groove 23 described above, and has two upper air supply ports 38 and 38 that are open at both ends in the width direction of the top surface 17b of the hollow guide portion 17 and upper and lower portions. It is provided so that it may become a position to align.

  In the switching valve device 1B according to the present embodiment configured as described above, the compressed air source 5 is opened via the air supply line 31 and the air supply port 34 by opening the on-off valve 32 as in the first embodiment. Compressed air is supplied between the lower surface 20a of the slide valve body 20A and the bottom surface 17a of the hollow guide portion 17. Further, the compressed air from the compressed air source 5 is supplied between the upper surface 20 b of the slide valve body 20 </ b> A and the top surface 17 b of the hollow guide portion 17 through the upper air supply line 36 and the upper air supply port 38.

As described above, air is supplied to both the upper and lower sides of the slide valve body 20A, so that the upper surface 20b of the slide valve body 20A is pressed against the top surface 17b of the hollow guide portion 17 by the rising of the slide valve body 20A. It is possible to prevent contact with a relatively simple structure. That is, the excessive lift of the slide valve body 20 </ b> A that floats by the air supplied from the lower air supply unit 30 can be easily suppressed by the air supplied from the upper air supply port 38 of the upper air supply unit 35. Can be prevented.
Further, since air is also supplied between the upper surface 20b of the slide valve body 20A and the top surface 20b of the hollow guide portion 17, the pressure between them becomes positive pressure, It is also possible to prevent dust and the like from entering.

  Further, in the case where the top and bottom of the slide type valve device 1B are arranged upside down, the upper air supply unit 35 is used as the lower surface (upper surface in the drawing) 20b of the slide valve body 20A and the lower surface (illustrated in the drawing). It is also possible to use the air supply unit 30 as an air supply unit that supplies air so that an air layer is formed between the air supply unit 20b and the above-described air supply unit 30 as an upper air supply unit. Thereby, a common slide type valve device can be used even when it is necessary to arrange the top and bottom in reverse.

In the present embodiment, since the air supply port 38 of the upper air supply part 35 is provided so as to open to the top surface 17b of the hollow guide part 17, the slide valve body 20A side to be slid, that is, the same as above, that is, Compared with the case where an air supply port is provided on the moving side, the structure can be simplified.
Instead of such an aspect, an upper air supply port of the upper air supply unit may be provided so as to open on the upper surface 20b of the slide valve body 20A. In this case, for example, an upper air supply line may be connected to the front end face or the rear end face of the slide valve body, and an air path to the air supply port may be provided in the slide valve body.
Furthermore, in the present embodiment, substantially in the same manner as the air supply port 34 of the lower air supply unit 30 described above, a distance along the longitudinal direction is provided at each of both end portions in the width direction of the top surface 17b of the hollow guide unit 17. Since a plurality of upper air supply ports 38 are provided in the open state, it is possible to prevent the slide valve body 20A from being inclined in the longitudinal direction or the width direction as described above, and to smoothly slide along the substantially horizontal direction. .

Furthermore, in the present embodiment, the upper groove 20 for receiving the air supplied from the air supply port 38 of the upper air supply unit 35 is provided on the upper surface 20b of the slide valve body 20A along the slide direction. The substantially same effect as that obtained by providing the recessed groove 23 is provided.
As in the first embodiment, instead of or in addition to the aspect in which the upper concave groove 24 is provided on the upper surface 20b of the slide valve body 20A, the upper air supply portion 35 is provided on the top surface 17b of the hollow guide portion 17. You may make it provide the upper side ditch | groove which receives the air supplied from the air supply port 38 along a slide direction. Or you may make it not provide such an upper side ditch | groove.

  In the present embodiment, a flow rate adjustment valve 37 is provided in the upper air supply line 36 that is connected to and connected to the upper air supply port 38 of the upper air supply unit 35. Thereby, like the flow rate adjustment valve 33 of the lower air supply unit 30, the gap and the flying height can be adjusted relatively easily and stably by adjusting the flow rate of the supplied air.

The flow rate adjustment valves 33 and 37 disposed in the lower and upper air supply lines 31 and 36 are flow rate adjustment valves that can be manually adjusted in flow rate, as in the first embodiment. Instead, a valve capable of automatically increasing or decreasing the flow rate may be employed. When such a valve capable of automatically increasing or decreasing the flow rate is adopted, the flow rate can be increased or decreased so that the gap is an appropriate level, that is, a minute gap while ensuring the flying height. You may make it do. In this case, substantially the same as in the first embodiment, the contact state and the non-contact state of the top surface 17b and bottom surface 17a of the hollow guide portion 17 of the valve body housing 10B and the top surface 20b and bottom surface 20a of the slide valve body 20A are detected. Possible detection means similar to the above may be provided on the upper side and the lower side, respectively, and automatic adjustment for increasing or decreasing the flow rate based on detection of the contact state and the non-contact state by these detection means may be executed. That is, the flow rate of the upper and lower air supply units 30 and 35 may be controlled to increase or decrease so that the upper surface 20b and the lower surface 20a of the slide valve body 20A are not in contact with the top surface 17b and the bottom surface 17a of the hollow guide portion 17. .
Furthermore, it is good also as an aspect which sets the flow volume and pressure of the air supplied previously so that it may become an appropriate flying height and clearance gap, without providing the above various flow control valves, a pressure control valve, etc.

Note that the switching valve device 1B according to the present embodiment is applicable to the various transportation switching devices and transportation switching systems described above.
Further, the upper air supply part 35 and the upper concave groove 24 on the upper surface 20b of the slide valve body 20A described in the present embodiment may be further provided in the switching valve device 1A according to the second embodiment.

Next, still another embodiment according to the present invention will be described with reference to the drawings.
FIG. 9 is an explanatory diagram for explaining a switching valve device as a sliding valve device according to the fourth embodiment.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or simplified.

The switching valve device 1C according to the present embodiment is mainly different from the switching valve device 1 according to the first embodiment in the configuration of the valve body housing 10C.
In this embodiment, as shown to Fig.9 (a), the sealing member 19 is arrange | positioned along the peripheral edge vicinity of each 2nd opening 12 and 12 in the inner wall face of the hollow guide part 17 of 10 C of valve body housings. .
As shown in FIG. 9B, the seal member 19 is provided along the vicinity of the periphery of each of the second openings 12 and 12 and has a ring shape concentric with the second opening 12. An annular housing groove 13a in which the seal member 19 is housed is formed in the top wall portion 13B of the valve body housing 10C.
As shown in FIG. 9C, the seal member 19 includes a seal ring 19a that is in sliding contact with the upper surface 20b of the slide valve body 20, and an elastic member that slightly biases the seal ring 19a toward the slide valve body 20 side. 19b.

The seal ring 19a has a groove along the circumferential direction that opens toward the groove bottom (the groove top surface in the example) of the housing groove 13a of the top wall portion 13B. It shows what was in the shape of a letter. The seal ring 19a is accommodated so as to be fitted into the accommodating concave groove 13a of the top wall portion 13B. The elastic member 19b is accommodated in the concave groove of the seal ring 19a.
The seal ring 19a is made of UHMWPE (ultra high molecular weight polyethylene), Teflon (registered trademark), PEEK (polyether ether ketone), a synthetic resin material such as a fluororesin, or a metal material such as bronze or phosphor bronze. It may be made of a material excellent in wear resistance and slidability.

In the illustrated example, the elastic member 19b is an O-ring having a substantially circular cross section made of an elastic material such as rubber. The seal ring 19a is slightly biased toward the slide valve body 20 by the elastic member 19b.
The elastic member 19b is not limited to an O-ring shape, and may be a V-ring shape having a substantially V-shaped cross section. Moreover, it is not restricted to a ring-shaped thing, It is good also as an aspect which arrange | positions a some elastic member at intervals along the circumferential direction of the ditch | groove of the seal ring 19a. Moreover, it is not restricted to what consists of elastic members, such as rubber | gum, It is good also as what consists of spring members, such as a disk spring and a spring.

According to the switching valve device 1 </ b> C including the sealing member 19 as described above, the top surface 17 b of the hollow guide portion 17 of the valve body housing 10 </ b> C and the upper surface 20 b of the slide valve body 20 are brought into close contact with each other via the sealing member 19. Therefore, it is possible to prevent leakage of fine powder or leakage of transport air for transporting the granular material.
Further, as in the third embodiment, excessive sliding of the slide valve body 20 is prevented by the seal member 19, and direct contact between the top surface 17b of the hollow guide portion 17 and the upper surface 20b of the slide valve body 20 is simplified. Can be suppressed with a simple structure.
Note that the switching valve device 1C according to the present embodiment can be applied to the above-described various transportation switching devices and transportation switching systems.
Moreover, you may make it provide further the sealing member 19 demonstrated in this embodiment in 1 A of switching valve apparatuses which concern on the said 2nd Embodiment.

The position of the opening of the valve body housing described in the above embodiments is not limited to the illustrated example, and may be provided at another position. Moreover, what is necessary is just to make it deform | transform suitably the shape of each through-hole of a slide valve body according to these opening positions.
Further, in each of the above embodiments, the valve body housing and the slide valve body whose cross-sectional shape substantially orthogonal to the slide direction is a substantially square shape are shown, but the present invention is not limited to such a mode, and the cross-sectional shape is a substantially rectangular shape. It is also good.

  Further, in each of the above embodiments, the second opening of the valve body housing is provided so as to face the first opening, and is formed as a pair formed at intervals along the sliding direction. Although the example which provided the through-hole diagonally along the thickness direction at intervals along the slide direction is shown, it is not restricted to such an aspect. For example, the first opening and the second opening of the valve body housing are provided so as to face each other, and the other of the second openings is provided in a direction substantially orthogonal to the facing direction. It is good also as an aspect which provides the corresponding through-hole in a slide valve body. That is, when one of the first opening and the second opening is provided on the upper and lower sides, respectively, the other of the second openings may be provided on the side surface side. In this case, one of the through holes of the slide valve body is provided so as to penetrate in the thickness direction so that one of the first opening and the second opening communicates, and the other of the through holes is connected to the first opening. It is good also as an aspect provided so that it may bend toward the side surface side from one side of the upper and lower sides (side in which the 1st opening was provided) so that the other of 2nd opening may be connected. In this case, when the seal member as described in the fourth embodiment is provided, the seal member may be disposed on the side wall portion of the valve body housing provided with the other of the second openings.

Further, the opening and the through hole as described above are combined, and three or more second openings respectively connected to the three or more systems of the transportation paths are provided in the valve body housing, and the opening of the valve body housing is provided. It is good also as a multidirectional switching valve apparatus made into the aspect which provided the three or more corresponding through-holes in the slide valve body at intervals along the slide direction. That is, the valve body housing is provided with a first opening that communicates with one system of transportation paths and three or more second openings that communicate with three or more systems of transportation paths, and these valve openings correspond to these openings. By providing the through hole in the slide valve body, it is possible to adopt a mode in which a plurality of three or more transportation routes can be switched to communicate with one transportation route. For example, the same first opening and two (or one) second openings as described above are provided on the lower surface side and the upper surface side of the valve body housing, and one (or two) second openings are also provided on the side surface side. It is good also as an aspect which can provide and connect the through-hole corresponding to these openings to the slide valve body at intervals along the sliding direction, and can switch and communicate three transport routes with respect to one transport route.
In this case, a valve body drive unit capable of controlling the stop of the slide valve body at a plurality of positions so that each opening of the valve body housing and each through hole of the slide valve body communicate with each other is adopted. do it.

  Furthermore, in each of the above embodiments, as the slide type valve device, the switching valve device that switches and communicates the two transportation routes with respect to the one transportation route is exemplified, but the sliding valve device according to the present invention is The present invention is not limited to such a switching valve device, and can be applied to various sliding valve devices. For example, the present invention can also be applied to an open / close shutter or the like in which a single opening is provided on each of the upper and lower sides of the valve body housing, and a single transport path connected to the opening is opened and closed by a slide valve body.

1, 1A, 1B, 1C Switching valve device (sliding valve device)
2 1st transportation route (1 transportation route)
3 Second transport route (one of two transport routes)
4 Third transport route (the other of the two transport routes)
10, 10A, 10B, 10C Valve body housing 11 First opening 12 Second opening 17, 17A Hollow guide portion 17a Bottom surface of hollow guide portion 17b Top surface of hollow guide portion 20, 20A Slide valve body 20a Lower surface of slide valve body 20b Upper surface of slide valve body 20c End face of slide valve body 21 First through hole 22 Second through hole 23 Concave groove 25 Valve body drive air supply unit 29 Valve body drive air supply port 30 Air supply unit 31 Air supply line 33 Flow rate adjusting valve 34 Air supply port 35 Upper air supply unit 50 Transport switching device 50A Transport destination side switching unit (transport switching device, first switching unit)
50B Transport source side switching unit (transport switching device, second switching unit)

Claims (8)

A slide type valve device incorporated in the middle of the transportation path of the granular material,
A slide valve body, a valve body housing having a hollow guide portion that slidably accommodates the slide valve body in a substantially horizontal direction and having an opening communicating with the transport path, a lower surface of the slide valve body, and the hollow It has an air supply port provided so as to face between the bottom surface of the guide part, and an air supply part that supplies air so that an air layer is formed between them.
The opening of the valve body housing is composed of a first opening through which a single transportation route is communicated and two second openings through which two transportation routes are communicated.
The slide valve body has a first through hole that allows one of the second openings to communicate with the first opening when slid to one side, and the second opening when slid to the other side. A slide-type valve device , wherein a second through-hole that communicates the other of the first opening and the first opening is provided at an interval along the slide direction . In claim 1,
An air supply port of the air supply unit is provided so as to open to a bottom surface of the hollow guide unit. In claim 1 or 2,
At least one of the lower surface of the slide valve body and the bottom surface of the hollow guide portion is provided with a concave groove for receiving air supplied from the air supply port of the air supply portion along the slide direction. A sliding valve device. In any one of Claims 1 thru | or 3,
A slide type valve device characterized in that a flow rate adjusting valve is provided in an air supply line connected in communication with an air supply port of the air supply unit. In any one of Claims 1 thru | or 4,
A slide type valve device further comprising an upper air supply part for supplying air between an upper surface of the slide valve body and a top surface of the hollow guide part. In any one of Claims 1 thru | or 5,
The valve body housing has a valve body drive air supply port provided at each end in the sliding direction of the hollow guide portion of the valve body housing and opening toward each end surface of the slide valve body, and these valve body drive air supply ports are selected. A slide-type valve device comprising a valve body drive air supply unit for supplying air in a continuous manner. The plurality of sliding valve devices according to any one of claims 1 to 6, wherein one of the second openings of adjacent sliding valve devices and the first opening are in communication with each other. A transport switching device characterized by that. The plurality of sliding valve devices according to any one of claims 1 to 6, wherein one of the second openings of adjacent sliding valve devices and the first opening are in communication with each other. A first switching unit;
The plurality of sliding valve devices according to any one of claims 1 to 6, wherein one of the second openings of adjacent sliding valve devices and the first opening are in communication with each other. A second switching unit,
A first opening of a sliding valve device disposed on one end side in the juxtaposition direction of the first switching unit; and a first opening of a sliding valve device disposed on one end side in the juxtaposition direction of the second switching unit. A transport switching device characterized by communicating with each other.

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