JP2553892Y2 - Ejector device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ejector device in which an ejector body and various peripheral devices are arranged on a narrow side wall portion side of a block body and a silencer is opened in the direction of the narrow side wall portion. In recent years, the ejector device has been widely used as a device for obtaining a vacuum by sucking air. In this case, the ejector is rarely used alone, and as its peripheral devices, for example, a direction control valve, a pressure control valve, a check valve, a suction filter, a silencer, a pressure switch, and the like are additionally provided. By the way, when various peripheral devices are attached to the ejector main body, there is a problem that the ejector device becomes extremely large and occupies a large area in a factory. In particular, since the silencer is attached to the narrow side wall of the ejector body, the entire ejector device becomes considerably long (see Japanese Patent Application Laid-Open No. 56-141100). Moreover, in order to form a manifold by connecting a large number of ejector devices, it is necessary to dispose various peripheral devices on a narrow side wall portion of each ejector body, but a silencer is provided on one side wall portion. Therefore, the number of attached peripheral devices is limited. This has pointed out a disadvantage that an ejector device having a versatile function and being made into a manifold cannot be obtained. The present invention has been made to overcome the above-described disadvantages, and it is possible to reduce the size of the entire ejector device as much as possible, and to efficiently arrange various peripheral devices when connecting them in a manifold. It is another object of the present invention to provide an ejector device that can easily and effectively realize a manifold. In order to achieve the above object, the present invention provides an ejector body having a substantially rectangular parallelepiped shape, an air passage having a substantially rectangular parallelepiped shape and communicating with the ejector body, and the ejector body having a narrow side wall surface. And a plurality of peripheral devices such as switches, valves, etc., which are disposed on the narrow side wall surface of the block body, are formed of a substantially rectangular parallelepiped block body, and are mounted from the narrow side wall surface direction. A silencer for silencing a sound generated by air derived from the ejector body, wherein the ejector body, the block body, the peripheral device, and the silencer have substantially the same narrow side surfaces. A flat assembly is formed at the time of assembly, and the silencer further has an opening in a wide surface substantially orthogonal to a narrow side wall surface of the block body formed in a substantially rectangular parallelepiped shape. It is characterized by having. Next, a preferred embodiment of the ejector device according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 4, reference numeral 10 denotes an ejector device according to the present invention. The ejector device 10 includes a first block body 12, a second block body 14, an ejector body 16, a plate member 18, a third , A pressure switch 22, a safety valve 24, an on-off valve 26 operated by electromagnetic operation, and the like. Each of the above-mentioned components is a flat, substantially rectangular parallelepiped or a column, and has a gas passage formed therein. The ejector device 10 has a suction filter 28, check valves 30a, 30
b, the silencer 32 etc. are installed. First, in the block body 12, the vacuum port 36, the air supply port 38, and the vacuum port
36, a concave portion 40 is formed between the air supply ports 38, and a suction filter 28 is provided in a U-shaped passage 42 that connects the vacuum port 36 and the concave portion 40. In this case, a passage 39 is defined so as to communicate with the air supply port 38, while the suction filter 28 is configured to be detachable from the recess 40. Next, a sealing member 44 is interposed in the concave portion 40, and a lid 46 is screwed.
It is attached by inserting screws 48a and 48b. Block
The block body 14 and the block body 14 are integrated by inserting screws 52a and 52b from the block body 12 to the block body 14 with a seal member 50 interposed therebetween and screwing them. The block body 14 is provided with through holes 54a to 54c and screw holes 56a and 56b on its wide side surfaces and lower surface, respectively.The block body 14 further includes a silencer 32, check valves 30a and 30b, and a filter 58. Is done. As shown in FIG. 5, the silencer 32 includes covers 60a, 6
0b and the plate 62 are used for positioning and fixing. in this case,
The covers 60a and 60b are provided with a large number of holes 63a and 63b in order to secure a sufficient flow path for gas exhausted from the silencer 32. 1 and 5 (in the direction of arrow X in FIGS. 1 and 5). A number of holes are also formed in the plate 62. Screws 64a and 64b on cover 60a, block body 14, and cover 60b
Are integrated by screwing. The passage 70 and the passage 72 formed in the block body 14 are each provided with an internal screw. A screw hole 74 is formed in communication with the passage 72, and blind screws 76a and 76b are screwed into openings of the screw hole 74. Internal screws are cut into holes 78 and openings 80 formed on the lower surface of the block body 14, and blind screws 82a and 82b are screwed therein. On the other hand, the ejector body 16 has a silencer
A passage 154 traversing the ejector body 16 is formed so as to communicate with a passage 156 reaching 32, and further, check valves 30a, 30b
The diffuser chambers 140 and 144 are defined so as to correspond to the recesses in which the filter 58 is provided, and the passages 138 are formed in correspondence to the recesses in which the filter 58 is provided. Further, a hole 83, a passage 142, and a passage 146 are formed in the longitudinal direction of the ejector body 16. in this case,
When drilling the hole 83, a hole 94b having a diameter larger than
On the other hand, for forming the passages 142 and 146, holes 94a having a larger diameter than these are preferably used. Next, a nozzle 88 provided with an O-ring 84 and a cylindrical member 86 is fitted into the hole 83. In the ejector body 16, one end of the passage 142 is formed in a tapered shape in which the diameter on the diffuser chamber 140 side expands, and is configured so as to preferably capture a fluid that gushes vigorously from the tip of the nozzle 88. deep. In addition, passage 146
In this case, the diameter of the passage 146 is relatively large so as to sufficiently capture the fluid ejected from the passage 142.
Further, in this case, as shown in FIG. 6, a concave portion 90 is formed in the cylindrical member 86, and a passage 92 communicating the concave portion 90 and the passage of the nozzle 88 is formed. In addition, internal screws are cut into holes 94a and 94b formed for creating a passage in the ejector body 16, respectively, and blind screws 96a and 96b are screwed therein. Between the block body 14 and the ejector body 16, the ejector body
A seal member 98 and a seal member 100 are interposed between the plate member 18 and the plate member 18, respectively, and the screws 102a and 102b are penetrated from the plate member 18 to the block body 14 and screwed. On the other hand, an O-ring 106 is attached to the block
08a and 108b are penetrated from the block body 20 to the plate member 18 and screwed together to integrate the two. An O-ring 110 is attached to the pressure switch 22 (see FIG. 3), and the screws 112a and 112b are connected to the pressure switch 22 and the block body.
These are integrated by inserting into the 20 and tightening. In this case, a pressure setting adjusting screw 114 and a pressure state display unit 116 are provided on the upper surface of the pressure switch 22, so that the pressure switch 22 can be operated or confirmed from the upper surface direction. A seal member 118 and an on-off valve 26 are mounted on the upper surface of the block body 14, and
The three members a and 120b are inserted into the block body 14 through the seal member 118 from the on-off valve 26 and tightened to integrate the three members. In this case, lead wires 121a and 121b for inputting a valve operation signal are connected to the upper surface of the on-off valve 26 in advance. Meanwhile, safety valve 24
Is fitted with an O-ring 122 and screws 124a and 124b are
4. Insert them into the on-off valve 26 and tighten them to integrate them. In this case as well, a screw 126 for adjusting the flow rate when the valve is operated is provided on the upper surface of the safety valve 24, and a port 128 is provided for introducing air when the valve is operated. In addition, all the seal members are appropriately provided with holes so as not to hinder the connection of each passage, and all the O-rings described above are appropriately mounted to obtain a suitable communication state of each passage. Is done. In this way, the constituent elements are connected in series, and the ejector device 10 has a plate shape that approximates a flat rectangular parallelepiped as easily understood from the drawing. Next, the air passage of the ejector device configured as described above is schematically shown in FIG. 7, and its operation will be described. First, air is supplied from the pressure source 130 to the on-off valve 26.
In this case, the pressure source 130 is connected to the air supply port 38, so that the air supplied to the air supply port 38
2, 72, and through the screw holes 74 and 134 in order, and are supplied to the on-off valve 26. This air is supplied to the on-off valve by operating the on-off valve 26.
Ejector body 16 passes through passage 136 and filter 58 from 26
Is further supplied from the nozzle 88 to the passage 138, and sequentially passes through the diffuser chamber 140, the passage 142, and the diffuser chamber 144 to reach the passage 146. At this time, a negative pressure is generated in the diffuser chambers 140 and 144, and as a result, gas is suctioned and extracted from the vacuum port 36. That is, the gas to be sucked and extracted sequentially passes through the vacuum port 36, the passage 42, the suction filter 28, and the passage 70 to reach the passage 148.Then, the gas is divided into the passages 150 and 152, and the check valves 30a and 30b are respectively provided. Pass through 30b. Then, the air ejected from the nozzle 88 under a predetermined pressure flows into the passage 142, and at this time, the air introduced through the check valve 30a is sucked. Further, the air discharged from this passage 142 is diffused into the diffuser chamber 1
At 44, the air supplied through the check valve 30b is sucked. The air that creates a vacuum on the side of the passage 148 in this manner then flows into the passage 146, passes through the passages 154 and 156, and is sent into the silencer 32. The gas sent to the silencer 32 is silenced and then exhausted to the outside of the ejector device 10 through the holes of the plate 62 and the holes 63a and 63b of the covers 60a and 60b. Note that the safety valve 24 is connected to the passage 150 by passages 160 and 162 in a pipeline manner. When the vacuum pressure on the suction mechanism side reaches a set value, air is introduced from the port 128 into the passage 150, and the safety mechanism 24 Control the vacuum pressure. Further, the pressure switch 22 is connected to the passages 164 and 166,
Since the pressure switch 22 is connected to the passage 42 via the pipes 0 and 172 sequentially, a desired degree of vacuum can be selected by the pressure switch 22. That is, the pressure switch 22 operates according to the vacuum pressure on the suction mechanism side via the pipe line, and this state is shown on the display unit 116. Then, the effect of the device of the present invention acting as described above will be described below. For convenience of explanation, the surface of the ejector device 10 having the vacuum port 36, the air supply port 38, etc.
The front of 10, the surface facing this surface is the back, the surface having the adjusting screws 114 and 126 is the upper surface, the surface facing the upper surface is the lower surface, the surface having the cover 60a is the right surface,
The surface having the cover 60b is the left side surface. Therefore, in the present invention, the block body 12 containing the suction filter 28 on the front, top and back of the block body 14,
Peripheral devices such as the safety valve 24, the on-off valve 26, the ejector body 16, and the pressure switch 22 can be arranged compactly. For this reason, the ejector device 10 can be made as small as possible as compared with a conventional device in which a silencer is provided on a narrow side wall portion of the ejector device, and peripheral devices provided by the presence of such a silencer are provided. Is not reduced, and the diversification of the ejector device 10 is not prevented. Further, when the right side surface or the left side surface of the ejector device 10 is used as a mounting surface, a space between the mounting portion and the block body 14 is secured so as to secure a small space for exhaust between the mounting portion and the cover 60a or 60b. If a thin plate, washer, or the like as a gap defining means is interposed in the above, the right side surface, left side surface, back surface, and lower surface can be freely used. Therefore,
Various assumed operations and operations can be easily performed even in a small installation location where an appropriate space cannot be obtained corresponding to any of the above-described surfaces. Moreover, when a plurality of ejector devices 10 are connected in series to form a manifold, as shown in FIG. 8, the side surfaces of the respective ejector devices 10a to 10d can be used in contact with each other. In this case, if the through holes 54a to 54c are in communication with each other to form a long through hole, and a bolt is inserted into this through hole and screwed, the ejector devices 10a to 10d can be easily connected and fixed. At this time, in the ejector devices in the juxtaposed state, the blind screw 76a (76b) is screwed into the screw hole 74 of any one of the outermost ejector devices, and the blind screws 76a, 76b of the remaining ejector devices are connected. Remove all. Then, the pipe is connected to the other outer blind screw 76b (76a), and an appropriate sealing member is interposed between the ejector devices 10a to 10d. As a result, all the screw holes 74 form one communication passage. On the other hand, by closing all the air supply ports 38 using blind screws or the like, a manifold on the air supply side can be achieved. Further, a seal member interposed between the ejector devices 10a to 10d or the ejector devices 10a to 10d
Covers 60a and 60b provided in each silencer 32 can secure a small space from each other by a thin plate, a washer, and the like interposed between 0d, and a plurality of holes in the covers 60a and 60b.
The appropriately silenced exhaust gas is smoothly led out from 63a and 63b. In addition, by connecting the ejector devices 10a to 10d in series, the respective silencers 32 communicate with each other, and an exhaust port is formed integrally. In particular, when connecting a plurality of ejector devices 10a to 10d in a row, peripheral devices cannot be arranged on the right side surface and the left side surface of the block body 14, so that the width of the block body 14 is invented as in the present invention. With a configuration capable of effectively utilizing the entire narrow side wall portion, it becomes possible to effectively arrange desired peripheral devices. As described above, not only when the ejector device according to the present invention is used alone, but also when a plurality of ejector devices are used side by side, the peripheral devices can be effectively arranged, and the number of ejector devices can be increased. Functionalization is easily achieved.
Moreover, it is easy to make a plurality of ejector devices into a manifold, and it is possible to effectively use a limited space. Although the present invention has been described with reference to the preferred embodiment, the present invention is not limited to this embodiment, and various improvements and design changes can be made without departing from the gist of the present invention. Of course.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of an ejector device according to the present invention, FIG.
The drawings are a partial longitudinal sectional view of the ejector device according to the present invention, FIGS. 3 and 4 are partially exploded perspective views of the ejector device according to the present invention, and FIG. 5 is a silencer interior in the ejector device according to the present invention. FIG. 6 is a cross-sectional view of a nozzle and ancillary parts of the ejector device according to the present invention;
FIG. 7 is a configuration diagram of the air flow path of the ejector device according to the present invention, and FIG. 8 is a schematic perspective view for explaining a case where the ejector devices according to the present invention are juxtaposed. 10 ... Ejector device, 12, 14 ... Block body 16 ... Ejector body, 18 ... Plate member 20 ... Block body, 22 ... Pressure switch 24 ... Safety valve, 26 ... On-off valve 28 ... Suction filter 30 Check valve, 32 Silencer 36 Vacuum port, 38 Air supply port 58 Filter, 70, 72 Passage 88 Nozzle 130 Pressure source 140, 144 Diffuser chamber

Claims (1)

(57) [Rules for requesting registration of utility model] An ejector body having a substantially rectangular parallelepiped shape; a block body having a substantially rectangular parallelepiped shape, forming an air passage communicating with the ejector body, and disposing the ejector body on a narrow side wall surface thereof; and a width of the block body. A plurality of peripheral devices, such as switches and valves, which are disposed on the narrow side wall surface and are formed of a substantially rectangular parallelepiped block and are mounted from the narrow side wall surface direction, and a sound generated by air derived from the ejector body. And a silencer for silencing the ejector body, wherein the ejector body, the block body, the peripheral device, and the silencer have substantially the same narrow side surfaces to form a flat assembly at the time of assembly, and further comprise the silencer. Is an ejector device having an opening in a wide surface substantially orthogonal to a narrow side wall surface of the block body formed in a substantially rectangular parallelepiped shape.