JP6842217B1 - Educator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ejector capable of flexibly responding to various usage environments and having improved usability. SOLUTION: The ejector main body A is provided, and the ejector main body A is provided with a nozzle N inside, and a driving water inflow portion A1 into which the driving water w1 flows in, and a suction water w2 inside as the driving water w1 flows in. It has an inflowing suction water inflow part A2, a mixing part A3 in which the driving water w1 and the suction water w2 are mixed inside, and a drainage part A4 for discharging the driving water w1 and the suction water w2 to the outside. The water inflow portion A1 and the drainage portion A4 include hose attachment portions A1a and A4a to which a flexible hose H can be attached and detached at their ends. [Selection diagram] Fig. 1

Description

The present invention relates to an ejector that sucks a driven fluid by utilizing the flow of the driven fluid.

Conventionally, an ejector has been widely used as a device called a bilge for discharging unnecessary liquid and ballast water accumulated on the bottom of a ship, discharging combustion gas, and the like.

The ejector usually has two suction portions that communicate with each other and suck the fluid, and one suction portion is provided with a nozzle inside.
Then, when the driving fluid guided by the pump flows into one of the suction portions, the fluid is ejected into the ejector at high speed by the nozzle. At this time, according to Bernoulli's theorem, the pressure of the other suction part becomes low, and the fluid is sucked into the other suction part due to the pressure difference from the outside.

As described above, since the ejector has a simple structure and does not have an electric drive unit itself, it is superior in durability and safety as compared with a general electric drive vacuum pump or the like. ing.

Various inventions relating to such an ejector have been proposed. For example, in Patent Document 1, a jet of high-pressure fluid ejected from a nozzle into a diffuser is brought into contact with the inner surface of a narrowed portion of the diffuser appropriately, and the suction chamber is negatively affected. An invention relating to an ejector for the purpose of stably and surely exerting a desired suction capacity without a pressure state is described.

Further, Patent Document 2 describes an invention relating to an ejector provided with a strainer, which is used for transferring fuel between two tanks of an aircraft or supplying fuel to an engine.

Japanese Unexamined Patent Publication No. 2006-170051 JP-A-2017-190682

However, the ejector described in Patent Document 1 has a configuration in which a rigid pipe is connected to each of the suction port and the drain port via a flange at the end. Further, although the ejector described in Patent Document 2 does not describe piping, flanges are provided at the ends of each of the suction port and the drain port, and it is premised that a rigid piping is connected as in Patent Document 1. It is a configuration that is supposed to be.

That is, the ejectors described in both Patent Document 1 and Patent Document 2 have a problem that not only the place of use is restricted by the connection of rigid pipes, but also the handling becomes difficult and the usability is poor.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ejector that can flexibly respond to various usage environments and has improved usability.

In order to solve the above problems, the present invention includes an ejector main body.
The ejector main body is provided with a nozzle inside, a driving water inflow portion into which the driving water flows in, an inhalation water inflow portion in which the suction water flows in with the inflow of the driving water, and the driving water inside. It has a mixing unit in which the suction water is mixed, and a drainage unit for discharging the driving water and the suction water to the outside.
The driving water inflow portion and the drainage portion include a hose attachment portion to which a flexible hose can be attached and detached at its end.

According to the present invention, the drive water inflow part and the drainage part include a hose attachment part to which a flexible hose H can be attached and detached at the end portion thereof, so that the ejector can be easily handled during use and the fluid can be removed. Usability is improved because the suction area and the discharge area can be flexibly selected according to the usage environment and the like.

In a preferred embodiment of the present invention, the flow path of the suction water inflow portion and the flow path of the drainage portion are provided in a substantially straight line, and the opening direction of the driving water inflow portion and the opening direction of the drainage portion are set. It is almost the same.

With such a configuration, the flow path of the suction water inflow section and the flow path of the drainage section are provided in a substantially straight line, and the opening direction of the driving water inflow section and the opening direction of the drainage section are substantially the same. Therefore, the flow of the discharged driving water and the suction water is stable, and the drainage hose attached to the drainage portion does not run wild, so that stable drainage work can be performed.

In a preferred embodiment of the present invention, the outer peripheral surface of the suction water inflow portion is configured as a suction strainer.

With such a configuration, the suction water inflow portion is configured as a suction strainer on the outer peripheral surface thereof, thereby preventing dust contained in the intake water from flowing into the mixing portion and the drainage portion, and an ejector. It is possible to prevent clogging of the hose and the hose.

In a preferred embodiment of the present invention, the suction water inflow portion includes a hose attachment portion to which the hose can be attached and detached at an end portion thereof.

With such a configuration, it is possible to perform drainage work without submerging the ejector in water.
As a result, the work of transporting the ejector to a predetermined area to be inhaled becomes unnecessary, and the usability is improved.

In a preferred embodiment of the present invention, a suction strainer is provided at the end of the hose attached to the suction water inflow portion.

With such a configuration, it is possible to prevent dust contained in the intake water from flowing into the mixing portion and the draining portion, and to prevent clogging of the ejector and the hose.

In a preferred embodiment of the present invention, a handle portion for carrying the ejector main body is provided.

With such a configuration, the work of transporting the ejector main body to a predetermined area to be sucked becomes easy, and the usability is improved.

In a preferred embodiment of the present invention, a lifting locking portion for lifting the ejector main body is provided.

With such a configuration, it is possible to transport and collect the ejector body to a place that cannot be transported by human power by using a separate lifting tool or a work machine such as a crane vehicle, which improves usability. To do.

According to the present invention, it is possible to provide an ejector that can flexibly respond to various usage environments and has improved usability.

It is a schematic perspective view which shows the ejector which concerns on Embodiment 1 of this invention. It is a PP'line sectional view which shows the ejector which concerns on Embodiment 1 of this invention. It is a figure which shows the ejector which concerns on Embodiment 1 of this invention, is (a) front view, (b) plan view. It is a figure which shows the use state of the ejector which concerns on Embodiment 1 of this invention. It is a schematic perspective view which shows the ejector which concerns on Embodiment 2 of this invention. It is a QQ'line sectional view which shows the ejector which concerns on Embodiment 2 of this invention. It is a figure which shows the ejector which concerns on Embodiment 2 of this invention, is (a) front view, (b) plan view. It is a top view which shows the state which attached the hose to the driving water inflow part of the ejector body in the ejector which concerns on Embodiment 2 of this invention. It is a figure which shows the use state of the ejector which concerns on Embodiment 2 of this invention.

Hereinafter, the ejector according to the embodiment of the present invention will be described with reference to FIGS. 1 to 9.
It should be noted that each of the embodiments shown below is an example of the present invention, and the present invention is not limited to each of the following embodiments.

<Embodiment 1>
Hereinafter, the ejector according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
In these figures, reference numeral 1 indicates an ejector according to the present embodiment. Further, in FIG. 2, a portion other than the handle portion 1a, the lifting locking portion 1b, and the suction water inflow portion A2 is shown in cross section.

As shown in FIGS. 1 to 3, the ejector 1 includes an ejector main body A.

The ejector main body A is provided with a nozzle N inside, and has a driving water inflow portion A1 into which the driving water w1 flows in, an suction water inflow portion A2 in which the suction water w2 flows into the inside as the driving water w1 flows in, and an inside. It has a mixing portion A3 in which the driving water w1 and the suction water w2 are mixed, and a drainage portion A4 for discharging the driving water w1 and the suction water w2 to the outside.
In FIG. 2, the driving water w1 is indicated by a dotted arrow, the suction water w2 is indicated by a broken line arrow, and the mixed water of the driving water w1 and the suction water w2 passing through the flow path r3 is indicated by a dashed line arrow. ..

The drive water inflow portion A1 and the drainage portion A4 include hose attachment portions A1a and A4a to which a flexible hose H (see FIG. 4) can be attached and detached at their ends, respectively.
Further, the flow path r2 of the suction water inflow section A2 (not shown in this embodiment) and the flow path r3 of the drainage section A4 are provided substantially in a straight line.

The drive water inflow portion A1 extends from the mixing portion A3 so as to branch off, and is curved toward the drainage portion A4 to form a substantially L-shaped flow path r3.
As a result, the opening direction of the driving water inflow portion A1 and the opening direction of the drainage portion A4 are substantially the same.
Further, the nozzle N provided inside the mixing portion A3 and forming the end portion of the flow path r3 is configured so that the opening direction thereof is substantially the same as the opening direction of the drainage portion A4.

The intake water inflow portion A2 has a substantially cylindrical shape, and the outer peripheral surface thereof is configured as a suction strainer, and extends from the opening end of the mixing portion A3 on the side facing the drainage portion A4.

The mixing section A3 is connected to the mixing section main body A3a, which is connected to the suction water inflow section A2 and is formed in a substantially cylindrical shape, and the mixing section connection, which is connected to the drainage section A4 and gradually reduces in diameter toward the drainage section A4 side. Includes body A3b and.

The drainage portion A4 is configured to have a substantially cylindrical shape by being provided with a hose attachment portion A4a at the end and being connected to a drainage portion main body A4b whose diameter gradually increases toward the hose attachment portion A4a and a mixing portion connecting body A3b. Includes the drainage unit connecting body A4c.

More specifically, the ejector 1 is provided with a handle portion 1a for carrying the ejector main body A and a lifting locking portion 1b for lifting the ejector main body A.

The handle portion 1a extends over the substantially U-shaped first handle portion 1a1 provided over the mixing portion connecting body A3b and the draining portion connecting body A4c, and the driving water inflow portion A1 and the mixing portion A3. Includes a substantially linear second handle portion 1a2 provided.

The lifting locking portion 1b includes a first lifting locking portion 1b1 provided on the mixing portion main body A3a and a second lifting locking portion 1b2 provided on the drainage portion main body A4b, respectively. For example, a through hole p through which a string-like body for lifting (not shown) or the like is inserted is provided.

The ejector 1 configured in this way is used together with the water supply / drainage pump device W and the hose H in the state shown in FIG.
The water supply / drainage pump device W is an electrically driven pump device that has been conventionally used, and has a drainage port W1 and a water supply port W2.
Further, the hose H has a driving water hose H1, a water supply hose H2, and a drainage hose H3, and at each end, a coupler for connecting the ejector 1 and the water supply / drainage pump device W. C is provided.

More specifically, as shown in FIG. 4, the ejector 1 is submerged in a region X1 in which a certain amount of water is accumulated, such as in a predetermined pond, sea, or river.

At this time, one end of the drive water hose H1 is connected to the drive water inflow portion A1 via the hose attachment portion A1a, and the other end is connected to the drainage port W1.

At this time, one end of the water supply hose H2 is submerged inside the region X1, and the other end is connected to the water supply port W2.

Further, at this time, the drainage hose H3 is arranged in a predetermined region X2 in which one end thereof is connected to the drainage portion A4 via the hose attachment portion A4a and the other end is separated from the region X1.

The area X2 is a predetermined area where the driving water w1 and the suction water w2 are discharged, for example, inside a container such as a dry flat land or a bucket, in another pond, the sea, or a river.

By configuring the ejector 1, the water supply / drainage pump device W, and the hose H with respect to the area X1 and the area X2 in this way, first, the water inside the area X1 passes through the water supply hose H2 by the water supply / drainage pump device W. After that, it passes through the inside of the water supply / drainage pump device W and the drive water hose H1 and flows into the drive water inflow section A1 as the drive water w1.

Next, the driving water w1 is ejected into the mixing portion A3 at high speed by the nozzle N, and according to Bernoulli's theorem, the pressure inside the suction water inflow portion A2 and the mixing portion A3 becomes low, and the pressure difference from the outside causes the pressure difference from the outside. The water inside the region X1 flows into the suction water inflow portion A2 as the suction water w2.

Then, the driving water w1 and the suction water w2 pass through the drainage portion A4 and the drainage hose H3 and are discharged into the region X2.

According to the present embodiment, the drive water inflow portion A1 and the drainage portion A4 include hose attachment portions A1a and A4a to which a flexible hose H can be attached and detached at their ends, whereby the ejector 1 during use is provided. It is easy to handle, and the area where the fluid is sucked and the area where the fluid is discharged can be flexibly selected according to the usage environment and the like, so that the usability is improved.

Further, the flow path r2 of the suction water inflow section A2 and the flow path r3 of the drainage section A4 are provided in substantially a straight line, and the opening direction of the driving water inflow section A1 and the opening direction of the drainage section A4 are substantially the same. As a result, the flow of the discharged driving water w1 and the suction water w2 is stabilized, and the drainage hose H3 attached to the drainage portion A4 does not run wild, so that stable drainage work can be performed.

Further, since the outer peripheral surface of the suction water inflow portion A2 is configured as a suction strainer, dust contained in the suction water w2 is prevented from flowing into the mixing portion A3 and the drainage portion A4, and the ejector 1 and drainage are prevented. It is possible to prevent the hose H3 from being clogged.

Further, since the handle portion 1a for carrying the ejector main body A is provided, the work of transporting the ejector main body A to the area X1 or the like becomes easy, and the usability is improved.

Further, since the lifting locking portion 1b for lifting the ejector main body A is provided, the ejector main body can be moved to a place that cannot be manually transported by using a lifting tool or a work machine such as a crane car separately. A can be transported and collected, improving usability.

<Embodiment 2>
Hereinafter, the ejector according to the second embodiment of the present invention will be described with reference to FIGS. 5 to 9.
In the same embodiment, components that are basically the same as those in the previous embodiment are designated by the same reference numerals to simplify the description. Further, in FIG. 6, a portion other than the handle portion 1a and the lifting locking portion 1b is shown in cross section.

As shown in FIG. 5, the ejector 1 includes an ejector main body A as in the previous embodiment.

The ejector main body A is provided with a nozzle N inside, and a driving water inflow portion A1'in which the driving water w1 flows in, and a suction water inflow portion A2' in which the suction water w2 flows into the inside as the driving water w1 flows in. It has a mixing portion A3 in which the driving water w1 and the suction water w2 are mixed inside, and a drainage portion A4 for discharging the driving water w1 and the suction water w2 to the outside.
In FIG. 6, the driving water w1 is indicated by a dotted arrow, the suction water w2 is indicated by a broken line arrow, and the mixed water of the driving water w1 and the suction water w2 passing through the flow path r3 is indicated by a dashed line arrow. ..

The drive water inflow portion A1'is configured to extend in one direction so as to branch off from the mixing portion A3.
As a result, the angle formed by the opening direction of the driving water inflow portion A1 and the opening direction of the drainage portion A4 is approximately 90 degrees.
Further, the nozzle N provided inside the mixing portion A3 and forming the end portion of the flow path r3 is configured so that the opening direction thereof is substantially the same as the opening direction of the drainage portion A4.

The intake water inflow portion A2'extends from the opening end of the mixing portion A3 on the side facing the drainage portion A4.

The drive water inflow portion A1', the suction water inflow portion A2', and the drainage portion A4 have hose attachment portions A1a, A2a, and A4a to which a flexible hose H (see FIG. 4) can be attached and detached at their ends, respectively. Including.
Further, the flow path r2 of the suction water inflow section A2 and the flow path r3 of the drainage section A4 are provided substantially in a straight line.

The handle portion 1a includes a substantially U-shaped first handle portion 1a1 provided over the mixing portion connecting body A3b and the draining portion connecting body A4c.

In addition, since the configurations of the mixing portion A3, the drainage portion A4, and the lifting locking portion 1b are the same as those in the previous embodiment, the description thereof will be omitted.

As shown in FIG. 8, the ejector main body A according to the present embodiment can attach the suction water hose H4 to the suction water inflow portion A2'via the hose attachment portion A2a.

Further, a substantially cylindrical suction strainer S is provided at the end of the suction water hose H4.

The ejector 1 configured in this way is used together with the water supply / drainage pump device W and the hose H in the state shown in FIG.
The water supply / drainage pump device W is an electrically driven type conventionally used pump device, as in the previous embodiment, and has a drainage port W1 and a water supply port W2.
Further, the hose H has a driving water hose H1, a water supply hose H2, a drainage hose H3, and a suction water hose H4, and an ejector 1 and a water supply / drainage pump device at each end. A coupler C for connecting to W is provided.

More specifically, as shown in FIG. 9, the ejector 1 is arranged on land different from the area X1 and the area X2, such as in the vicinity of the place where the water supply / drainage pump device W is installed.

At this time, the driving water hose H1, the water supply hose H2, and the drainage hose H3 have the same connection mode and arrangement mode as those in the previous embodiment.

At this time, one end of the suction water hose H4 is connected to the suction water inflow portion A2 via the hose attachment portion A2a, and the other end (suction strainer S) is submerged inside the region X1.

By configuring the ejector 1, the water supply / drainage pump device W, and the hose H in this way with respect to the region X1 and the region X2, the driving water w1 and the suction water w2 are inside the region 2 in the same flow as in the previous embodiment. Is discharged to.

According to the present embodiment, in addition to the driving water inflow portion A1'and the drainage portion A4, a hose attachment portion A2a'to which the hose H (suction water hose H4) can be attached and detached is provided at the end of the suction water inflow portion A2'. By including it, it becomes possible to perform the drainage work without submerging the ejector 1 in water.
As a result, the work of transporting the ejector 1 to the area X1 or the like becomes unnecessary, and the usability is improved.

Further, since the suction strainer S is provided at the end of the suction water hose H4, dust contained in the suction water w2 is prevented from flowing into the mixing portion A3 and the drainage portion A4, and the ejector 1 and drainage are prevented. It is possible to prevent the hose H3 from being clogged.

The shapes, dimensions, and the like of each component shown in each of the above-described embodiments are examples, and can be variously changed based on design requirements and the like.

Further, in particular, in the second embodiment, the case where both the driving water w1 and the suction water w2 are absorbed from the same region X1 is shown, but the suction water hose H4 is attached to the suction water inflow portion A2'. Therefore, the driving water w1 and the suction water w2 can be absorbed from different regions.
That is, according to the ejector 1 according to the second embodiment, it is possible to respond more flexibly to various usage environments as compared with the ejector 1 according to the first embodiment.

1 Educator A Eductor body A1, A1'Drive water inflow part A1a Hose mounting part N Nozzle A2, A2' Suction water inflow part A2a Hose mounting part A3 Mixing part A3a Mixing part body A3b Mixing part connector A4 Drain part A4a Hose mounting part A4b Drainage part main body A4c Drainage part connection body r1, r2, r3 Flow path w1 Drive water w2 Inhalation water 1a Handle part 1a1 First handle part 1a2 Second handle part 1b Lifting lock part 1b1 First lifting part Stop 1b2 Second lifting locking part p Through hole S Suction strainer W Water supply / drainage pump device W1 Drainage port W2 Water supply port H hose H1 Drive water hose H2 Water supply hose H3 Drainage hose H4 Suction water hose C Coupler X1, X2 area

Claims (6)

Equipped with an ejector body that is placed on land
The ejector main body is provided with a nozzle inside, a driving water inflow portion into which the driving water flows in, an inhalation water inflow portion in which the suction water flows in with the inflow of the driving water, and the driving water inside. It has a mixing unit in which the suction water is mixed, and a drainage unit for discharging the driving water and the suction water to the outside.
The driving water inflow section, the drainage section, and the suction water inflow section include a hose attachment portion to which a flexible hose can be attached and detached at each end.
A drive water hose whose one end is attached to the water supply / drainage pump device is attached to the drive water inflow portion.
An inhalation water hose is attached to the inhalation water inflow portion so that one end thereof is submerged in a region where a certain amount of water is accumulated.
An ejector to which a drainage hose is attached to the drainage portion so that one end thereof is arranged in a region where a certain amount of water is stored at a distance from the region . The flow path of the suction water inflow portion and the flow path of the drainage portion are provided in a substantially straight line.
The ejector according to claim 1, wherein the opening direction of the driving water inflow portion and the opening direction of the drainage portion are substantially the same. The ejector according to claim 1 or 2, wherein the suction water inflow portion has an outer peripheral surface formed as a suction strainer. The ejector according to claim 3, wherein a suction strainer is provided at an end of the hose attached to the suction water inflow portion. A handle for carrying the ejector body is provided.
The driving water inflow portion is provided so as to project from the mixing portion.
The method according to any one of claims 1 to 4, wherein the handle portion projects in a direction opposite to the projecting direction of the driving water inflow portion with respect to the mixing portion in the driving water inflow portion, and is provided on the ejector main body. Educator. A lifting locking portion for lifting the ejector body is provided .
The ejector according to any one of claims 1 to 5 , wherein a pair of lifting locking portions are provided on the ejector main body at intervals in a direction in which the ejector main body extends.