WO2018092995A1

WO2018092995A1 - Air injection apparatus for cleaning construction vehicle

Info

Publication number: WO2018092995A1
Application number: PCT/KR2017/004303
Authority: WO
Inventors: 서춘성
Original assignee: 이노코퍼레이션 주식회사
Priority date: 2016-11-21
Filing date: 2017-04-21
Publication date: 2018-05-24
Also published as: JP2018083188A; KR20180056831A; KR101872800B1

Abstract

The present invention relates to an air injection apparatus which is installed in a construction vehicle, such as an excavator, and used to inject compressed air to clean and service the construction vehicle, the air injection apparatus for cleaning construction vehicles comprising: an air compressor; and an air gun, connected to the air compressor by an air hose, for injecting compressed air generated by the air compressor, wherein the air gun comprises: a body having an inlet and an outlet for circulation of the compressed air, and an inner circulation channel for connecting the inlet and the outlet; a trigger, attached to the body, for opening and closing the circulation channel; and a nozzle attached to the outlet of the body, and having a jet outlet in the interior, the nozzle being provided with a flow increasing means in which the outside air is sucked in due to the compressed air, which passes though the jet outlet and is injected, and is injected along with the compressed air. By allowing the amount of air injected to be increased by utilizing outside air by means of the flow increasing means, the air injection apparatus for cleaning construction vehicles according to the present invention can provide a large amount of injected air from a small amount of compressed air, and accordingly, even when compressed air generated by the air compressor is immediately utilized, an adequate amount of air can be injected continuously, and thus a small low-capacity air tank may be used or an air tank may be excluded from the apparatus, and therefore the present invention has the benefit of allowing the apparatus to be miniaturized and the production cost to be reduced.

Description

Construction Vehicle Cleaning Air Injector

The present invention relates to an air injector for cleaning a construction vehicle, and more particularly, to an air injector installed in a construction vehicle such as an excavator and used to inject compressed air for cleaning and maintenance of the construction vehicle.

As a technique related to an air injector for cleaning a construction vehicle, Korean Registered Utility Model Publication No. 20-0360178 (registered on Aug. 17, 2004, hereinafter referred to as “advanced technology”) has been proposed a “compressor using a hydraulic device”.

The prior art,

"In a compressor equipped with a compressed air storage tank, the hydraulic motor which can be connected to hydraulic pipes, such as heavy equipment,

The compressor connected to the hydraulic motor by coupling,

A check valve for sending the compressed air from the compressor to the air distributor,

An air distributor having a check valve connected to one side and an air storage tank connector on the other side,

It is a distribution port installed in the upper part of the air distributor.

The hydraulic motor is equipped with a hydraulic pipe connector to connect the hydraulic input pipe and the hydraulic return pipe with a hydraulic hose.

The air distributor has a fin-shaped tube inside, so that compressed air passes through a check valve connected to one side of the fin-shaped tube, an air storage tank connector coupled to the other side, and a distribution port installed at the top.

The air storage tank connector is connected to the air distributor and connected to the air storage tank by a hose to enable the air distributor and the compressed air to flow through the air storage tank.

The dispensing port is equipped with a valve that uses compressed air by fixedly coupling a hose to the front, and an air coupling that attaches and detaches the hose and uses compressed air, and has an automatic switch and a pressure gauge mounted thereon. " As doing

By using hydraulic pressure as the power source of the compressor, it is possible to operate the compressor without an electric motor, so that heavy equipment can be cleaned or simple maintenance, and the compressor can be miniaturized.

On the other hand, the air injector configured by combining an air gun with a conventional compressor including the prior art, the use of the air tank is inevitable for the stable injection of the compressed air, the volume of the device is increased due to the air tank, manufacturing cost is increased There is a problem done.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a construction vehicle cleaning air injector that can reduce the size of the device, and reduce the manufacturing cost.

In order to solve the above problems, the construction vehicle cleaning air injector according to the present invention,

Air compressor; And

And an air gun connected to the air compressor by an air hose and for injecting compressed air generated by the air compressor.

The air gun

A body having an inlet and outlet for circulation of compressed air, and an internal flow path connecting the inlet and the outlet;

A trigger coupled to the body to open and close the flow path; And

And a nozzle mounted to an outlet of the body and having a nozzle formed therein.

The nozzle is provided with a flow rate increasing means for the external air is sucked by the compressed air injected through the jet port, to be injected together with the compressed air.

According to another feature of the invention,

The body,

Handle portion; And,

It comprises a; tube formed extending toward the front from the upper end of the handle portion,

The distribution channel,

A first passage connected to a lower end of the inlet and extending vertically in the handle part;

A second flow path extending toward the front from the first flow path and open toward the front of the body and on which the trigger is mounted;

A third flow path formed to extend upward from the second flow path; And,

A front end portion is connected to the outlet and a rear end portion is connected to the third flow passage; a fourth flow passage formed inside the tubular body;

The body is provided with intermittent injection means for intermittently spraying the supplied compressed air,

The intermittent injection means,

A mounting space formed on the upper side of the third passage to open toward the upper side of the body so as to be connected to the third passage and the fourth passage;

A valve body mounted to the mounting space and having a receiving space opened downward;

An opening / closing opening coupled to the valve body so as to be capable of lifting and lowering, and closing the connection between the third flow passage and the fourth flow passage during the lowering operation; And

A spring inserted into the receiving space of the valve body to pressurize the opening / closing downward;

The opening and closing port repeats the lifting operation by the pressure change of the compressed air applied through the third flow path when the second flow path is opened by the operation of the trigger.

In the construction vehicle cleaning air injector according to the present invention, the air injection amount can be increased by using the external air by the flow increase means, so that a large amount of air injection can be obtained with a small amount of compressed air, so that the air compressor is generated. Even if the compressed air is used immediately, a sufficient amount of air can be continuously injected. Therefore, by using a small air tank of low capacity or removing the air tank from the device, the device can be miniaturized and manufacturing costs can be reduced. have.

In addition, the construction vehicle cleaning air injector according to the present invention, since the compressed air can be intermittently injected by the intermittent injection means, there is an effect that can prevent the excessive use of the compressed air due to the continuous air injection.

1 is a block diagram of a construction vehicle cleaning air injector according to an embodiment of the present invention.

2 is a configuration diagram showing a state in which the air tank is excluded in FIG.

Figure 3 is a cross-sectional configuration of the air gun in the construction vehicle cleaning air injector according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 3, the construction vehicle cleaning air injector according to an embodiment of the present invention is largely air compressor 100, air gun 200, flow increasing means 300 and intermittent injection Means 400.

The air compressor 100 is composed of a known air compressor that generates compressed air.

The air compressor 100 is installed in the construction vehicle and is operated by receiving power from the battery of the construction vehicle.

An air gun 200 is connected to the air compressor 100 by an air hose 500 and is used to inject compressed air generated by the air compressor 100.

As shown in FIG. 3,

A body 240 having an inlet port 210 and an outlet port 220 for distribution of compressed air, and an inner flow path 230 connecting the inlet port 210 and the outlet port 220;

A trigger 250 coupled to the body 240 to open and close the flow path 230; And

And a nozzle 260 mounted to the outlet 220 of the body 240 and having a nozzle 261 formed therein.

Where the body 240 is,

Handle portion 241; And,

It comprises a; tubular body 242 extending toward the front end of the handle portion 241 forward.

If necessary, the body 240 may be provided with a storage space (not shown) for storing compressed air. This storage space is provided in the interior of the handle portion 241 to be connected to the first flow path 231 to be described later, or consists of a separate air tank (air tank) connected to the first flow path 231 body 240 ) Can be mounted.

And the distribution path 230,

A first flow path 231 connected to the lower end of the inlet 210 and extending vertically in the handle 241;

A second flow path 232 extending toward the front from the first flow path 231 and open to the front of the body 240;

A third flow path 233 formed to extend upward from the second flow path 232; And,

The front end is connected to the outlet 220, the rear end is connected to the third flow path 233, the fourth flow path 234 formed inside the tubular body 242; comprises a.

The air hose 500 is connected to the inlet 210 by pneumatic fitting or coupling, and the compressed air supplied from the air compressor 100 to the air gun 200 through the air hose 500. Air is injected through the nozzle 260 through the first passage 231, the second passage 232, the third passage 233, the fourth passage 234, and the outlet 220.

As shown, the first flow path 231 is formed to open to the upper side of the body 240, the pressure gauge 700 may be mounted on the upper end of the open first flow path (231). The pressure gauge 700 may be configured to actuate or stop the air compressor 100 according to the pressure of the compressed air acting on the first flow path 231 by applying a function of a pressure switch as necessary. have. In addition, the pressure switch may be separately provided to be installed in the air compressor 100 or the air hose 500 as necessary.

The trigger 250 is mounted on the second flow path 232 to open and close the second flow path 232.

In the embodiment of the present invention, the trigger 250, the internal structure is not shown in detail, the shape and internal structure of the trigger 250, the user pulls the trigger 250 to the second flow path 232 When the trigger 250 is released and the trigger 250 is released, it may be returned to the present invention and may be variously applied within a range capable of closing the second flow path 232.

The nozzle 260 is mounted to the outlet 220 by being screwed inside the front end of the tubular body 242.

The ejection opening 261 of the nozzle 260 is formed to have a diameter smaller than that of the fourth flow passage 234 and the exhaust opening 220, so that a venturi effect occurs in the ejection opening 261.

The flow rate increasing means 300 is provided in the nozzle 260 so that the outside air is sucked by the compressed air injected through the ejection port 261 of the nozzle 260 and sprayed with the compressed air.

According to the exemplary embodiment of the present invention, the flow increasing means 300 includes a vent formed through the outer circumferential surface of the nozzle 260 to be connected to the jet port 261, as shown in FIG. The vent hole penetrates inclined toward the front of the nozzle 260 from the outer circumferential surface of the nozzle 260 toward the front of the nozzle 260, and a plurality of vents are formed to be radially arranged with respect to the center of the nozzle 260. Do.

Accordingly, the vent hole provides a passage for supplying external air to the spray port 261 by the Venturi effect generated by the compressed air passing through the spray port 261.

The flow rate increasing means 300 may be applied to various means for injecting the outside air together with the compressed air by using the venturi effect, in addition to the same structure as the vent hole.

As a result, the construction vehicle cleaning air injector according to the present invention can increase the air injection amount by using the external air by the flow increase means 300, thereby obtaining a large amount of air injection amount with a small amount of compressed air. .

And, according to this, even when using the compressed air generated in the air compressor 100 immediately, a sufficient amount of air can be continuously injected, as shown in Figure 1, the air compressor 100 and the air gun ( The small capacity of the small air tank 600 is connected between the 200, or as shown in Figure 2, by excluding the air tank from the device can be miniaturized the device can be reduced manufacturing costs.

The intermittent injection means 400 is provided in the body 240 of the air gun 200 so that compressed air can be intermittently injected,

As shown in FIG. 3,

A mounting space 410 formed to be open toward the upper side of the body 240 on the upper side of the third passage 233 so as to be connected to the third passage 233 and the fourth passage 234;

A valve body 420 mounted to the mounting space 410 and having a receiving space 421 open downward;

An opening and closing hole 430 coupled to the valve body 420 so as to be liftable and blocking the connection of the third flow path 233 and the fourth flow path 234 during the lowering operation; And

It is inserted into the receiving space portion 421 of the valve body 420, the spring 440 for pressing down the opening and closing port 430; comprises.

A female screw is formed on the inner circumferential surface of the mounting space 410, and a male screw is formed on the outer circumferential surface of the valve body 420 so that the valve body 420 is mounted on the mounting space 410. Screwed on.

The spring 440 is made of a known compression coil spring to press down the opening and closing port 430, and the opening and closing opening 430 is pressed down by the spring 440, in close contact with the bottom of the mounting space 410 is made By closing the third flow path 233, the connection of the third flow path 233 and the fourth flow path 234 is blocked.

In addition, the spring 440 is compression-deformed so that the opening and closing port 430 can be lifted up when the pressure of the compressed air applied to the opening and closing port 430 through the third flow path 233 is greater than or equal to a predetermined pressure, thereby causing the third flow path. When the pressure of the compressed air applied to the opening and closing port 430 through the third flow passage 233 is lower than or equal to the predetermined pressure, the opening and closing port 430 is maintained in a lowered state. Allow distribution channel 233 to be closed.

On the other hand, so that the opening and closing port 430 can be moved up and down smoothly, the valve body 420 is formed with a guide hole 422 penetrated up and down to be connected to the receiving space 421, the center of the upper surface of the opening and closing port 430 The rod 431 inserted into the guide hole 422 of the valve body 420 to be lifted and raised is protruded.

As a result, according to the intermittent injection means 400 having the above configuration, when the opening and closing port 430 opens the second flow path 232 by the operation of the trigger 250, through the third flow path 233. The lifting and lowering operation is repeated by the pressure change of the compressed air applied, and thus, the compressed air injected through the nozzle 260 may be intermittently injected, thereby overusing the compressed air due to continuous air injection. You can prevent it.

In addition, according to the intermittent injection means 400, it is possible to inject a high pressure air as compared to the method of continuously injecting compressed air.

That is, if the air injected from the nozzle 260 can be maintained at a pressure of 4.5 bar when the compressed air generated in the air compressor 100 is immediately used, for example, by continuously spraying compressed air, the intermittent operation may be performed. When spraying using the injection means 400, the air injected from the nozzle 260 can be continuously intermittently sprayed at a pressure of 8bar to 9.5bar.

In the above description of the present invention, with reference to the accompanying drawings, but with a specific shape and structure of the "industrial vehicle cleaning air injector" has been described mainly, the present invention can be variously modified and changed by those skilled in the art, such variations And modifications should be construed as falling within the protection scope of the present invention.

Claims

Air compressor (100); And

And an air gun 200 connected to the air compressor 100 by an air hose 500 and for injecting compressed air generated by the air compressor 100.

The air gun 200,

A body 240 having an inlet port 210 and an outlet port 220 for circulation of compressed air, and an inner channel 230 that connects the inlet port 210 and the outlet port 220 to each other;

A trigger 250 coupled to the body 240 to open and close the flow path 230; And

And a nozzle 260 mounted to the outlet 220 of the body 240 and having a nozzle 261 formed therein.

The nozzle 260, flow increase means 300 for sucking the outside air by the compressed air injected through the injection port 261 to be injected with the compressed air; construction, characterized in that the Air cleaning device for vehicle.
The method of claim 1,

The flow rate increasing means 300 is characterized in that made of a through-hole formed in the outer circumferential surface of the nozzle 260 to be connected to the jet port 261, construction vehicle cleaning air injector.
The method of claim 1,

The body 240 is,

Handle portion 241; And,

It comprises a; tubular body 242 extending toward the front at the upper end of the handle portion 241,

The distribution path 230,

A first flow path 231 connected to the inlet 210 and having a lower end extending vertically in the handle 241;

A second flow path 232 extending forward from the first flow path 231 to be opened toward the front of the body 240 and on which the trigger 250 is mounted;

A third flow path 233 formed to extend upward from the second flow path 232; And,

And a fourth flow passage 234 formed inside the tubular body 242 such that a front end portion is connected to the outlet 220 and a rear end portion is connected to the third flow path 233.

The body 240 is provided with intermittent injection means 400 for intermittently supplied compressed air is injected,

The intermittent injection means 400,

Mounting space portion 410 formed to be opened toward the upper side of the body 240 on the upper side of the third passage 233, so as to be connected to the third passage 233 and the fourth passage 234. ;

A valve body 420 mounted to the mounting space portion 410 and having a receiving space portion 421 open downward;

An opening and closing hole 430 coupled to the valve body 420 so as to be lifted and lowered, and blocking connection between the third flow path 233 and the fourth flow path 234 during the lowering operation; And

And a spring 440 inserted into the accommodation space 421 of the valve body 420 to pressurize the opening and closing port 430 downwardly.

The opening and closing port 430 repeats the lifting operation by the pressure change of the compressed air applied through the third flow passage 233 when the second flow passage 232 is opened by the operation of the trigger 250. Characterized in that, the construction vehicle cleaning air injector.
The method of claim 3,

The valve body 420 is formed with a guide hole 422 penetrated up and down to be connected to the receiving space 421,

The center of the upper surface of the opening and closing port 430, characterized in that the rod 431 which is inserted into the guide hole 422 to be lifted and formed protruding, the construction vehicle cleaning air injector.
The method according to any one of claims 1 to 4,

And a small air tank (600) installed to be connected between the air compressor (100) and the air gun (200), the construction vehicle cleaning air injector.