JPH0716080Y2 - Ejector device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ejector device, and more particularly, it can be replaced with one side face and an upper face or a lower face of the ejector device which are not in contact with each other on the assumption that they are manifolded in advance. Alternatively, the present invention relates to an ejector device in which an adjustable element is arranged and an ejector and an ejector peripheral device are connected in series.

The ejector device is a device that sucks air to obtain a vacuum,
In recent years, its range of use has been expanding rapidly. in this case,
It is rarely used as an ejector alone, and peripheral devices such as a directional control valve, a pressure control valve, a check valve, a suction filter, a silencer, and a pressure switch are attached.

However, when the various devices are attached as described above, the ejector device becomes extremely large, occupies a large area in the factory, and it is inconvenient for the user and expensive. In addition, when a large number of devices of the same kind are connected in series in pneumatic equipment such as solenoid valve manifolds in order to reduce their size and to further enhance their functions, the ejector device is attached to various kinds of disorder as described above. It has been pointed out that it is not possible to form a manifold due to peripheral devices.

Furthermore, since the peripheral device is not mounted so as to be compatible with various expected use conditions, the work of adjusting, operating or replacing the device becomes complicated,
Therefore, it has been pointed out that the ejector device according to the prior art cannot meet the demand for a manifold.

The present invention has been made in order to overcome the above-mentioned inconvenience, and an ejector unit and peripheral devices attached thereto are formed in a flat rectangular parallelepiped shape or a rectangular body shape, and are connected to the ejector unit in a manifold shape. In this case, the replacement element or the adjustment element is arranged so that it can be operated from one narrow side surface and the upper surface or the lower surface exposed to the outside. It is an object of the present invention to provide an ejector device that facilitates the adjustment of the device, is suitable for downsizing, and is easy to maintain and manage.

To achieve the above object, the present invention provides a nozzle unit,
Diffuser part, vacuum port, air supply port,
An ejector device in which a plurality of flat rectangular parallelepiped-shaped or rectangular-shaped ejector units each having a silencer are continuously provided, wherein the air is made to extend in a direction orthogonal to a flow direction of air ejected from the nozzle portion to the diffuser portion. A supply port and a vacuum port are provided, further, a common passage for air supply extending orthogonal to the air flow direction and the extending direction of the air supply port and the vacuum port is provided, and a pressure is applied to each of the ejector units. A switch is selectively and removably provided, and a suction filter is selectively and removably provided, and the operation portion of the pressure switch is provided so as to correspond to a narrow portion of the ejector unit. And

A preferred embodiment of the ejector device according to the present invention will be described below in detail with reference to the accompanying drawings.

1 to 4, reference numeral 10 indicates an ejector unit according to the present invention formed on the premise that they are connected to each other. The ejector unit 10 includes a first block body 12,
Second block body 14, ejector body 16, plate member 1
8, third block body 20, pressure switch 22, safety valve 24,
It is composed of an on-off valve 26 and the like operated by electromagnetic operation, and each of the above-mentioned constituent elements is a flat substantially rectangular parallelepiped or a columnar shape, and a gas passage is formed therein. Further, the ejector unit 10 has therein a suction filter 28, check valves 30a and 30b, a silencer 32, and the like.

First, in the block body 12, the vacuum port 36, the air supply port 38, and the vacuum port 3 each formed of a screw hole are provided.
6. A recess 40 is formed between the air supply ports 38, and the suction filter 28 is installed in a U-shaped passage 42 that connects the vacuum port 36 and the recess 40. In this case, the 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 lid 46 is screwed into the recess 40 with a seal member 44 interposed.
It is attached by inserting screws 48a and 48b. Block body
The 12 and the block body 14 are integrated with each other by interposing a seal member 50 between them and threading screws 52a and 52b through the block body 12 and the block body 14.

Further, the block body 14 is provided with through holes 54a to 54c and screw holes 56a and 56b on its wide side surface and lower surface, respectively, and the block body 14 is further equipped with a silencer 32, check valves 30a and 30b, and a filter 58. To be done. As shown in FIG. 5, the silencer 32 is positioned and fixed by the covers 60a and 60b and the plate body 62. In this case, covers 60a, 60b and plate 62 are silencers.
A large number of holes are formed in order to sufficiently secure the flow path of the gas exhausted from 32, and the screws 64a and 64b cover the cover 60a,
The block body 14 and the cover 60b are inserted and screwed to integrate them. The passage 70 and the passage 72 formed in the block body 14 are each provided with an internal screw.
Further, a screw hole 74 as a common passage for each ejector unit 10 is formed so as to extend in a direction orthogonal to the passage 72, and blind screws 76a and 76b are screwed into the openings of the screw hole 74. Inner screws are formed in the holes 78 and the openings 80 formed in 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 includes a silencer 32 of the block body 14.
A passage 154 that crosses the ejector main body 16 is formed so as to communicate with the passage 156 that extends to, and further, the diffuser chambers 140 and 144 are defined so as to correspond to the recesses that house the check valves 30a and 30b. A passage 138 is bored so as to correspond to the recess that houses 58. Further, a hole 83, a passage 142, and a passage 146 are provided in the longitudinal direction of the ejector body 16. In this case, when forming the hole 83, a hole 94b having a diameter larger than this is formed in advance, while a hole 94a having a diameter larger than these is preferably used for forming the passages 142 and 146. Next, the hole 83 has an O
A nozzle 88 fitted with a ring 84 and a cylindrical member 86 is fitted. 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 to preferably capture the fluid vigorously ejected from the tip of the nozzle 88. deep. Further, in the passage 146, the diameter of the passage 146 is formed to be relatively large so as to sufficiently capture the fluid ejected from the passage 142. Further, in this case, as shown in FIG. 6, a recess 90 is formed in the cylindrical member 86, and a passage 92 is formed to connect the recess 90 and the passage of the nozzle 88. Also, holes 94a and 94b bored to create a passage in the ejector body 16 are provided with internal screws, respectively, and blind screws 96a and 96b are screwed into them.

Between the block body 14 and the ejector body 16, the ejector body 16
A seal member 98 and a seal member 100 are respectively interposed between the plate member 18 and the plate member 18, and screws 102a and 102b are threaded from the plate member 18 to the block body 14 so as to penetrate therethrough.

On the other hand, an O-ring 106 is attached to the block body 20, and the screw 108
The a and 108b are penetrated from the block body 20 to the plate member 18 and screwed 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 attached to the pressure switch 22 and the block body 20.
They are integrated by inserting and tightening.
In this case, the upper surface of the pressure switch 22 is provided with a screw 114 for adjusting the pressure setting and a display section 116 of the pressure state corresponding to the narrow direction of the ejector unit 10, and the operation or confirmation of the pressure switch 22 is performed on the upper surface. It is configured so that it can be performed from the direction. Further, a seal member 118 and an opening / closing valve 26 are mounted on the upper surface of the block body 14, and the screws 120a and 120b are attached to the opening / closing valve 26.
The seal member 118 is pierced through and is inserted and tightened in the block body 14 to integrate the three members. In this case, a lead wire 121a for inputting a valve operation signal to the upper surface of the on-off valve 26,
Connect 121b. On the other hand, the safety valve 24 has an O-ring 122.
Then, the screws 124a and 124b are inserted into the safety valve 24 and the opening / closing valve 26 and tightened to integrate them. In this case also the safety valve 24
A screw 126 for adjusting the flow rate when the valve is operating is provided on the upper surface of the port, and a port 128 is provided to introduce air when the valve is operating.
Is provided.

It should be noted that all of the above-mentioned sealing members are appropriately provided with holes so as not to interfere with the connection of the passages, etc.
The rings are each properly fitted to obtain a suitable communication of each passage. In this way, each component is arranged in series,
The ejector simple substance 10 has a plate shape similar to a flat rectangular parallelepiped, as can be easily understood from the drawing.

Next, the air passage of the ejector unit 10 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 said air supply port 38 can pass through the passage 13
2, 72, and screw holes 74 and 134 are sequentially passed, and are supplied to the opening / closing valve 26. This air is operated by operating the on-off valve 26.
26 through passage 136, filter 58 to ejector body 16
Is further supplied to the passage 138 of the nozzle, and is further vigorously discharged from the nozzle 88, 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 suctioned and extracted gas sequentially passes through the vacuum port 36, the passage 42, the suction filter 28, and the passage 70 to reach the passage 148. Further, the gas is branched into the passages 150 and 152, and the check valves 30a, respectively. Pass 30b. Therefore, the air ejected from the nozzle 88 under a predetermined pressure flows into the passage 142, but at this time, the air introduced through the check valve 30a is sucked. Further, the air sent out from this passage 142 is diffuser chamber 1
At 44, the air sent through the check valve 30b is sucked. The air that creates a vacuum on the passage 148 side then flows into the passage 146, passes through the passages 154 and 156, and is sent to the silencer 32. The gas sent to the silencer 32 is silenced, passes through the holes of the covers 60a and 60b and the plate 62, and is discharged to the outside of the ejector unit 10. The safety valve 24 is connected to the passage 150 by the passages 160 and 162.
When the vacuum pressure on the suction mechanism side reaches a set value, air is introduced into the passage 150 from the port 128 to control the vacuum pressure on the suction mechanism side. Further, since the pressure switch 22 is pipe-connected to the passage 42 through the passages 164 and 166, the recess 168, and the passages 170 and 172 in this order, it is possible to obtain an effect that a desired degree of vacuum can be selected by this pressure switch. To be That is, the pressure switch 22 is actuated in accordance with the vacuum pressure on the suction mechanism side via the pipe, and this state is shown on the display unit 116.

Here, the effect of the ejector unit 10 will be described in advance.

For convenience of description, the surface of the ejector single unit 10 having the vacuum port 36, the air supply port 38, etc. is referred to as the ejector single unit 10
The front surface, the surface facing the surface is the back surface, 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 side surface, and the cover 60b is The surface that has is the left side surface.

Therefore, in the present invention, if an appropriate space is secured corresponding to the front surface of the ejector unit 10, the pipes connected to the vacuum port 36 and the air supply port 38 can be attached and detached without any trouble. Further, all the mounting screws of the lid 46, the safety valve 24 and the block body 12 can be tightened and loosened. Therefore, when the suction filter 28 needs to be replaced due to dirt or the like, the lid 46 can be removed, and the safety valve 24 and the block body 12 can be attached and detached as necessary. For example, when the gas sucked and extracted from the vacuum port 36 is clean and there is no need to use the suction filter 28, the block body 12 is removed, and a pipe line for air supply is screwed into the passage 72 to extract gas. It is possible to suck and extract the gas by screwing the conduit of the above into the passage 70.

On the other hand, if an appropriate space is secured with respect to the upper surface of the ejector unit 10, first, the adjusting screws 114 and 126 can be operated,
The display unit 116 can be easily confirmed, and the processing of the lead wires 121a and 121b can be performed without any inconvenience. Further, since the mounting screws of the pressure switch 22 and the opening / closing valve 26 can be tightened and loosened, they can be easily attached / detached when the two need replacement. on the other hand,
Regarding replacement or attachment / detachment, the components other than those described above have a relatively simple structure and also have excellent durability,
Since there is no need to replace the ejector unit 10 during normal use, the ejector unit 10 can be further miniaturized by orderly incorporating these components. Further, the other surface of the ejector unit 10, that is, the right side surface, the left side surface, the rear surface and the lower surface, has no element for adjusting or exchanging, and secures a small space for exhaust from the cover 60a or 60b. Okay, the right side,
The left side, back and bottom can be used freely. Therefore, it is possible to easily carry out various expected operations and works even in a small installation place where an appropriate space cannot be obtained in correspondence with any of the surfaces.

Further, in the present invention, a plurality of ejector units 10 are bored to form a manifold. In this case, as shown in FIG.
The side surfaces of the respective ejector units 10a to 10d are in contact with each other and coupled. That is, if the through holes 54a to 54c are made to communicate with each other to form long through holes, and bolts are inserted into these through holes and screwed, the ejector units 10a to 10d can be easily connected and fixed. In the ejector device formed by the juxtaposed state, the blind screw 76a (76b) of any one of the ejector units 10 located at the outermost side is screwed into the screw hole 74,
Remove all the blind screws 76a and 76b of the remaining ejector unit 10. Then, the pipe line is connected to the other outer blind screw 76b (76a), and each of the air supply ports 38 is closed by the blind screw. At that time, an appropriate seal member is interposed between the individual ejector units 10a to 10d. As a result, all the screw holes 74 form one communication passage as a common passage orthogonal to the extending direction of the vacuum port 36, the nozzle 88, and the diffuser chamber 140. In other words, it is possible to achieve manifolding on the air supply side. As described above, even when a plurality of ejector single bodies 10 are arranged in series, the various operations and operations described above can be easily performed without any inconvenience. Moreover, with such a setting, as a result, many ejector single units can be installed in a limited space, so that the occupied space can be remarkably small. Furthermore, the ejector alone
Through hole when fixing 10 to a wall or plate
54a to 54c or screw holes 56 on the lower surface of the ejector unit 10
It may be screwed to a and 56b with bolts.

As described above, when the ejector device according to the present invention is used by forming a manifold by arranging a plurality of side faces of each ejector unit in contact with each other, it is easy to adjust, replace, attach / detach the components of the ejector unit, and confirm the indicators. It is possible to carry out the above, and it is possible to use the individual units arranged in parallel. Therefore, it is possible to obtain an effect that a group of individually adjustable ejectors, that is, a manifold can be easily formed, and a limited space can be effectively used.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an ejector unit according to the present invention, FIG. 2 is a partial vertical cross-sectional view of the ejector unit according to the present invention, and FIGS. 3 and 4 are partially omitted of the ejector unit according to the present invention. FIG. 5 is an exploded perspective view, FIG. 5 is a cross-sectional view of a silencer interior portion of a single ejector according to the present invention, FIG. 6 is a cross-sectional view of a nozzle and its accessory parts of the single ejector according to the present invention, and FIG. FIG. 8 is a schematic perspective view for explaining the ejector alone according to the present invention. 10 …… Ejector alone, 12, 14 …… Block body 16 …… Ejector body, 18 …… Plate member 20 …… Block body, 22 …… Pressure switch 24 …… Safety valve, 26 …… Open / close 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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-56-141100 (JP, A) Actually opened 59-133800 (JP, U) Actually opened 58-191400 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An ejector device in which a plurality of flat rectangular parallelepiped or rectangular ejector units each including a nozzle portion, a diffuser portion, a vacuum port, an air supply port, and a silencer are connected in series. The air supply port and the vacuum port are provided by extending in a direction orthogonal to the flow direction of the air ejected from the diffuser portion, and further in the air flow direction and the extending direction of the air supply port and the vacuum port. A common passage for air supply extending orthogonally is provided, a pressure switch is selectively and detachably provided in each of the ejector units, and a section filter is selectively and detachably provided. An ejector device characterized in that an operating portion of the pressure switch is provided in correspondence with a narrow portion of the ejector unit.