KR102308101B1 - Chemical spraying apparatus for lawn - Google Patents

Abstract

The present invention relates to a chemical spraying device for a lawn. The chemical spraying device comprises: a main body frame (100); a chemical flow pipe (200); a flow valve unit (300); an expansion flow pipe (400); a reinforcement frame (500); and a support wire (600). According to the present invention, chemicals supplied from a chemical tank provided in a loading box during a driving process of a vehicle can be effectively sprayed onto a lawn. Accordingly, it is possible to enhance convenience according to chemicals spraying.

Description

Chemical spraying device for lawn {CHEMICAL SPRAYING APPARATUS FOR LAWN}

The present invention relates to a drug spraying device for a lawn, and more particularly, is branchably installed in the loading box of a vehicle and supplied from a chemical tank provided in the loading box during the driving process of the vehicle when spraying a drug on a lawn planted with grass. It relates to a drug spraying device for lawns, which allows the drug to be effectively sprayed on the lawn, thereby increasing the convenience of spraying the drug.

In general, farmhouses or golf courses, etc., promote the growth of various crops and grasses, and spray various chemicals such as various pesticides to increase the yield by preventing diseases and pests. The drug is being sprayed using a vehicle.

In order to spray these pesticides, conventionally, there is a manual pesticide spreader in which a worker holds a pesticide barrel on his back, operates a pumping lever with one hand, and holds a nozzle bar with the other hand to spray pesticides while walking between crops or furrows. On the other hand, since the worker can spray the pesticide while moving the nozzle, there is an advantage that the pesticide can be sprayed toward the desired place. In addition, there is a problem that pesticides are inhaled into the respiratory tract, and there is a device that sprays pesticides while the worker holds the hose connected to the pesticide reservoir mounted on the vehicle of the agricultural manager and follows the manager, but this is Not only does it have the advantage that it does not carry the hose on its back, but because the worker sprays pesticide while carrying the hose, this also causes the pesticide sprayed from the nozzle at the end of the hose to be on the worker's body and be inhaled through the respiratory system, causing damage to the pesticide. It has been pointed out as a problem that it cannot be prevented.

In addition, since the pesticide spraying device using the agricultural manager described above pumps and sprays only the pesticide stored in the pesticide container, the spraying range of the pesticide is very narrow and there is a problem in that it is not sprayed far.

As the background technology of the present invention, the pesticide spraying device of Republic of Korea Patent No. 10-1382644 is disclosed.

The present invention was created in view of the above circumstances, and the object of the present invention is to be detachably installed at the rear of the vehicle provided with the loading box, and when spraying the drug on the lawn, it is supplied from the chemical tank provided in the loading box during the driving process of the vehicle. It not only allows the chemical to be effectively sprayed on the lawn, but also facilitates the phenomenon that the expanded flow pipe installed to expand on both sides of the drug flow pipe in the longitudinal direction in the process of spraying the drug through the driving of the vehicle gets caught in the embankment, soil layer, or obstacles. An object of the present invention is to provide a drug spraying device for lawns that can effectively prevent damage to the expansion flow pipe and the expansion injection nozzle installed in the expansion flow pipe by enabling it to respond.

The present invention for achieving the above object is a drug spraying device that is detachably installed at the rear of a vehicle provided with a loading box 10 and sprays a drug on a lawn, which is hooked to the rear of the loading box 10 of the vehicle. The main body frame 100 provided with the hook mounting part 110; It is connected to both sides of the main body frame 100 in the longitudinal direction via the joint unit 210, and a plurality of center injection nozzles 220 are formed at regular intervals along the longitudinal direction so that the drug introduced into the center injection nozzle is The drug flow pipe 200 is formed to be sprayed in the direction of the ground through 220; A flow valve unit 300 for controlling the medicament supplied from the medicament tank 20 provided in the loading box 10 in a state installed in the medicament flow pipe 200 to flow into the medicament flow pipe 200; One side in the longitudinal direction is connected to the joint unit 210 so as to be reciprocally rotatable in the direction of the main body frame 100 and the drug flow pipe 200 with the connection part of the joint unit 210 as an axis. A plurality of expansion injection nozzles 430 are formed at regular intervals, and the medicine flowing through the branch pipe part 321 branched from the flow valve unit 300 is introduced into the interior through the expansion injection nozzle 430 . an expanded flow pipe 400 formed to be sprayed in the ground direction; a reinforcing frame 500 having one side in the longitudinal direction of the main body frame 100 installed rotatably up and down through the rotating shaft portion 510; A support wire 600 having one longitudinal side connected to the reinforcing frame 500 while the other longitudinal side is connected to the expanded flow pipe 400; and the joint unit 210 includes the main body A hollow rotation guide sphere 211 mounted on both ends in the longitudinal direction of the frame 100 and the drug flow pipe 200, and a spin connector that is rotatably installed by fitting both sides in the longitudinal direction to the rotation guide sphere 211 212 and a mounting connector 213 branched from the outer periphery of the spin connector 212 and connected to the expansion flow pipe 400 , and one longitudinal side is connected to the expansion flow pipe 400 . The furnace longitudinal direction other side is configured to further include a return elastic member 800 connected to the mounting connector 213 of the joint unit 210, the expansion flow pipe 400 is the expansion injection nozzle 430 is a predetermined interval. The main pipe body 410 formed of On the other side in the longitudinal direction of the main tube body 410, a reinforcing injection nozzle 440 for allowing the medicine that has flowed inside to be injected, and a nozzle guard 450 for protecting the reinforcing injection nozzle 440 are installed. characterized by being
In addition, the locking mounting part 110 is made such that one side in the longitudinal direction is installed to be connected to the main body frame 100 , and the hooking hook hole 111 that is formed to be bent in the downward direction is formed on the other side in the longitudinal direction.
In addition, the main body frame 100 is provided with a vibration buffer 120 to relieve the impact force transmitted to the main body frame 100 due to the fluctuation generated during the driving process of the vehicle.
In addition, one side of the telescopic rod 720 that is installed to be telescopically installed on the body 710 in a state in which one side of the body 710 in the longitudinal direction is rotatably installed in the engaging part 110 is the reinforcing frame 500 . It is rotatably installed in the expansion and contraction rod 720 by the expansion and contraction of the flow pipe 400 is configured to further include a driving cylinder member 700 to rotate up and down.

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According to the present invention, it can be installed quickly and detachably through the locking part in the loading box of the vehicle, so it can be expected to improve the installation and storage properties, and the effective spraying of the medicine as the chemical is sprayed on the lawn at an appropriate height on the outer surface of the loading box Of course, when the expansion flow pipe installed to expand on both sides of the drug flow pipe in the longitudinal direction during the course of the drug spraying operation through the driving of the vehicle is caught in an embankment, soil layer, or obstacle, it is reciprocated by the joint unit to prevent impact. It is possible to easily respond to the damage of the expansion flow pipe and the expansion injection nozzle installed in the expansion flow pipe.

1 is a state diagram showing the state of a drug spraying device for a lawn according to the present invention;
Figure 2 is a state diagram showing an embodiment in which the vibration buffer is installed on the main body frame according to the present invention;
3 is a state diagram showing an embodiment of a joint unit according to the present invention;
4 is a state diagram showing an embodiment of a flow valve unit according to the present invention;
5 is a state diagram showing an embodiment of a nozzle protection member installed at the end of the expanded flow pipe according to the present invention;
6 is a state diagram showing an installation state of the driving cylinder member according to the present invention;
7 is a state diagram showing an embodiment of a return elastic member according to the present invention.

Hereinafter, with reference to the accompanying drawings, a drug spraying device for lawn according to the present invention will be described in detail. Prior to this, in the description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, the terms to be described later are terms set in consideration of the function in the present invention, and these terms may vary according to the intention or custom of the producer or manufacturer producing the product, and the thickness of the lines shown in the drawings or the size of the components etc. may be exaggerated for the sake of clarity and convenience of explanation, and the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical spirit of the present invention. Therefore, it should be understood that there may be various equivalents and modifications that can be substituted for them at the time of filing the present application.

In addition, when a part is 'connected' to another part throughout the specification, this includes not only 'directly connected' but also 'indirectly connected' with another element interposed therebetween. do. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

Figure 1 is a state diagram showing the state of the drug spraying device for the lawn according to the present invention, Figure 2 is a state diagram showing an embodiment in which the shaking buffer is installed in the main body frame according to the present invention, Figure 3 is according to the present invention It is a state diagram showing an embodiment of the joint unit, Figure 4 is a state diagram showing an embodiment of the flow valve unit according to the present invention, Figure 5 is an embodiment of the nozzle protection member installed at the end of the expanded flow pipe according to the present invention is a state diagram showing, FIG. 6 is a state diagram showing an installation state of the driving cylinder member according to the present invention, and FIG. 7 is a state diagram showing an embodiment of the return elastic member according to the present invention.

1 to 7, the drug spraying device for lawn according to the present invention is detachably installed at the rear of the vehicle provided with the loading box 10, and in the drug spraying device for spraying the drug on the lawn, the vehicle's A main body frame 100 provided with a locking mounting part 110 to be hooked on the rear of the loading box 10 is connected to the main body frame 100 via a joint unit 210, and a plurality of center spray nozzles 220 ) is installed in the drug flow pipe 200, the flow valve unit 300 installed in the drug flow pipe 200, and the joint unit 210 is installed to be connected to a plurality of expansion injection nozzles 430 are installed expansion The flow pipe 400, the reinforcing frame 500 that is rotatably installed on the main body frame 100 through the rotation shaft 510, and the reinforcing frame 500 and the extended flow pipe 400 in the longitudinal direction on both sides It is configured to include a support wire 600 that is installed to be connected.

That is, the drug spraying device for lawn according to the present invention is detachably installed at the rear of the vehicle in which the loading box 10 is provided, and when spraying the drug on the lawn, the chemical tank 20 provided in the loading box 10 in the driving process of the vehicle. By allowing the drug supplied from the drug to be effectively sprayed on the lawn, the convenience of spraying the drug is improved, and when the end of the expanded flow pipe 400 is caught in the embankment or the soil layer during the driving process of the vehicle, the expanded flow pipe responds easily to this. (400) to prevent damage.

Here, it will be preferable that the loading box 10 of the vehicle is provided with a medicament tank 20 in which the medicament is stored, and a separate pump member 30 for flowing the medicament stored in the medicament tank 20 is installed.

The main body frame 100 is installed via a locking mounting part 110 that is hooked on the rear of the loading box 10 of the vehicle, and the hooking part 110 has one side in the longitudinal direction of the main body frame 100 ) is formed so as to be formed to be connected to the hook hook 111 is formed to be bent in the downward direction on the other side in the longitudinal direction.

That is, when the locking hook hole 111 of the locking part 110 is hooked on the rear of the loading box 10 of the vehicle, the main body frame 100 is in close contact with the lower side of the loading box 10 and the vehicle is It is possible to prevent the fluctuation of the main body frame 100 during the running process, and it is located at an appropriate height of the nozzle for spraying the drug, and is scattered and sprayed on the lawn, thereby achieving efficient spraying of the drug.

In addition, the main body frame 100 is made of a steel tubular pipe having a certain length, but is not limited thereto. .

At this time, the main body frame 100 is provided with an oscillation buffer 120 that is in close contact with the loading box 10 of the vehicle, and the impact force transmitted to the main body frame 100 due to the oscillation generated during the driving process of the vehicle. may be able to alleviate

In addition, the drug flow pipe 200 is connected to both sides of the main body frame 100 in the longitudinal direction through the joint unit 210, and a plurality of center injection nozzles 220 are formed at regular intervals along the longitudinal direction. It is formed so that the drug introduced into the medicament can be injected in the direction of the ground through the center injection nozzle 220 .

That is, the drug flow pipe 200 is installed to be spaced apart from the main body frame 100 by a predetermined interval so that the drug flowing from the drug tank 20 can be introduced into the inside of the drug flow pipe. It will be preferable that both sides of the longitudinal direction of 200 are formed to have a closed structure. At this time, the center injection nozzle 220 may be installed at regular intervals along the longitudinal direction on the lower side of the drug flow pipe 200 so that the injection hole (unsigned) is directed toward the ground.

The joint unit 210 is installed on both sides in the longitudinal direction of the drug flow pipe 200, and the expansion flow pipe 400 to be described later is connected while mounting the drug flow pipe 200 to be connected to the main body frame 100. It is to enable the front-back and up-down rotation of the expanded flow pipe 400 .

Here, looking at an embodiment of the joint unit 210, the joint unit 210 is a hollow rotating guide sphere 211 mounted on both ends of the main body frame 100 and the drug flow pipe 200 in the longitudinal direction. And, a spin connector 212 that is rotatably installed by fitting both sides of the rotation guide part 211 in the longitudinal direction, and is branched from the outer periphery of the spin connector 212 and is connected to the expansion flow pipe 400 It may be configured to include a mounting connector (213).

That is, the joint unit 210 as an embodiment is made to have a "ㅗ" shape in cross section to enable multi-directional rotation of the expanded flow pipe 400, and does not perform the spraying operation of the drug or the drug flow pipe ( 200), the expanded flow pipe 400 can be folded upward by the spin connector 212, and in the process of spreading and using the expanded flow pipe 400, the expanded flow pipe 400 is an embankment. In the case of colliding with an obstacle, the expansion flow pipe 400 can reciprocate in the direction of the main body frame 100 and the drug flow pipe 200 with the mounting connector 213 as an axis to cope with the impact caused by the collision. is to make it

Here, it is described that the joint unit 210 is formed in a "ㅗ" shape, but it is not limited thereto. .

In addition, the flow valve unit 300 is the drug supplied from the drug tank 20 provided in the loading box 10 in a state installed in the drug flow pipe 200, the drug flow pipe 200 and the expanded flow pipe 400. control to flow.

That is, the flow valve unit 300 is installed in the drug flow pipe 200 to branch and supply the drug flowing from the drug tank 20 to the drug flow pipe 200 and the expanded flow pipe 400 to be described later. It is to prevent the drug from being supplied to the drug flow pipe 200 as necessary while allowing the drug to be sprayed only through the expanded flow pipe 400 .

The flow valve unit 300 as an embodiment has a valve body 310 to which an extension pipe 311 extending from the loading box 10 is connected in a state mounted on the drug flow pipe 200, and the valve body 310 ) with a pair of branch extensions 320 extending in opposite directions on both sides of the width direction, and a pipe connector 330 extending on either side of either side of the valve body 310 in the width direction. could be configured.

Here, the branch extension port 320 is connected to a branch pipe part 321 for guiding the flow of the drug to the expanded flow pipe 400 installed on both sides in the longitudinal direction of the drug flow pipe 200, and the pipe connector 330 ) is connected to the guide pipe part 331 for guiding the flow of the drug to the drug flow pipe 200 .

At this time, a control valve 332 is installed in the pipe connector 330 to control the flow of the drug through the guide pipe 331 so that the drug is injected only through the expansion flow pipe 400. When the control valve 332 is closed, the medicament flowing from the medicament tank 20 will not flow to the medicament flow pipe 200 .

In addition, the expanded flow pipe 400 is connected to the joint unit 210 in the longitudinal direction, and the main body frame 100 and the drug flow pipe 200 are reciprocated about the connection part of the joint unit 210 as an axis. A plurality of extended injection nozzles 430 are rotatably installed along the longitudinal direction at regular intervals, and the drug flowing through the branch pipe part 321 branched from the flow valve unit 300 flows into the inside. It is formed so that it can be sprayed in the direction of the ground through the expansion spray nozzle 430 .

That is, the expanded flow pipe 400 is a hollow pipe having a structure in which both sides in the longitudinal direction are closed. and a connecting pipe body 420 formed to be connected to the end of the main pipe body 410 so that the mounting connector 213 of the joint unit 210 can be rotatably connected, and the main pipe body 410 is formed to be connected to the branch pipe part 321 .

At this time, the main tube body 410 is formed to have a structure in which both sides of the longitudinal direction are closed, and the connecting tube body 420 is preferably formed to have a structure connected to one side of the main tube body 410 in the longitudinal direction. .

In addition, a reinforcing injection nozzle 440 may be installed on the other side in the longitudinal direction of the main tube body 410 so that the medicine flowing therein can be injected, and the reinforcement injection nozzle 440 is the main tube body 410 . Since the reinforcing injection nozzle 440 collides with the embankment and is damaged due to the nature of the structure protruding from the longitudinal end of the drug injection process, the reinforcing injection nozzle 440 in the main tube body 410 may occur. It will be preferable that the nozzle guard 450 is installed to protect the .

At this time, the nozzle guard 450 as an embodiment may be made of a ring-shaped member mounted on the end of the main tube body 410, and may be made of a material having an elastic force or a material such as steel or aluminum. .

In addition, the reinforcing frame 500 is installed to the main body frame 100 in the longitudinal direction so as to be rotatable up and down through the rotation shaft portion 510, and the support wire 600 has one side in the longitudinal direction of the reinforcing frame. The other side in the longitudinal direction is connected to the expanded flow pipe 400 while being connected to the 500 .

At this time, a reinforcing wire 520 in which the other side in the longitudinal direction is connected to the reinforcing frame 500 while one side in the longitudinal direction is connected to the engaging part 110 may be further installed. This is when the expansion flow pipe 400 is expanded due to the reinforcing wire 520 and the support wire 600, the reinforcing frame 500 is supported by the reinforcing wire 520, and the support wire 600 By this, it is possible to maintain the maximum expansion state of the expansion flow pipe 400 .

In addition, when the reinforcing frame 500 is folded up by the locking mounting part 110 installed in the main body frame 100, the expanded flow pipe 400 is lifted by the support wire 600 and folded. It is possible to prevent excessive bending of the waist and reduce work fatigue of the worker.

Here, the main body frame 100 may be provided with an upright guide tube body 130 for guiding the folding and rotating operation of the reinforcing frame 500 . That is, the upright guide tube body 130 is installed upright on the upper side of the main body frame 100 at a position adjacent to the reinforcing frame 500, and the reinforcing frame 500 is the rotating shaft portion 510. When rotating around the axis, the side portion of the reinforcing frame 500 is moved along the surface portion of the upright guide tube body 130 to achieve smooth rotational driving.

On the other hand, a driving cylinder member 700 for rotating the reinforcing frame 500 to lift or lower it to perform a folding or unfolding operation of the expanded flow pipe 400 may be installed, the driving cylinder member 700 One side of the telescopic rod 720 that is installed to be telescopically installed on the body part 710 in a state where one side of the body part 710 in the longitudinal direction is rotatably installed on the hook mounting part 110 is in the reinforcement frame 500. It is rotatably installed so that the expansion flow pipe 400 can be rotated up and down by the expansion and contraction of the expansion rod 720 .

That is, when the elastic rod 720 is moved to the inside of the body portion 710, the reinforcing frame 500 is rotated about the rotation shaft portion 510 as an axis and pulled in the direction of the engaging portion 110. As a result, the expansion flow pipe 400 connected to the reinforcing frame 500 and the support wire 600 through the medium is folded in the direction of the engaging part 110 . In addition, when the expansion rod 720 is extended, the reinforcing frame 500 is expanded and the expansion flow pipe 400 is expanded, so that the spraying operation of the drug can be smoothly performed.

At this time, the driving cylinder member 700 is electrically connected to a separate operation switch (not shown) provided in the driver's seat of the vehicle by wire or wireless, so that the operator depends on the inclination or curvature of the lawn or the presence or absence of obstacles during the driving process of the vehicle. By manipulating the operation switch to lift or lower the expanded flow pipe 400, it is possible to prevent damage to the expanded flow pipe 400 and improve work efficiency.

In addition, a return elastic member 800 in which the other longitudinal side is connected to the mounting connector 213 of the joint unit 210 with one longitudinal side connected to the expansion flow pipe 400 may be installed.

That is, when the expansion flow pipe 400 collides with an obstacle or an embankment in the work area, the return elastic member 800 alleviates the collision acting on the expansion flow pipe 400 and allows it to quickly return to its original position. This is to ensure a smooth drug dispensing operation.

As described above, the chemical spraying device for lawn according to the present invention can be easily installed in the loading box of the vehicle to perform the operation, and thus, when the operation is not performed, it can be stored by being separated from the loading box and folded and stored. It is possible to obtain the effect of improving the performance, and furthermore, when the expanded flow pipe collides with an obstacle or embankment in the process of spraying the drug on the lawn, the impact force is alleviated, thereby effectively preventing damage or damage to the expanded flow pipe.

Although specific embodiments of the present invention have been described in detail as described above, various modifications may be made to those of ordinary skill in the art to which the present invention pertains without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the above-described embodiments, and should be defined by not only the claims described below, but also the claims and equivalents.

10: loading box 20: chemical tank
30: pump member 100: main body frame
110: jamming mounting part 120: shaking buffer
130: upright guide tube 200: drug flow tube
210: joint unit 220: center injection nozzle
300: flow valve unit 310: valve body
320: branch extension 330: pipe connector
400: expanded flow pipe 410: main body
420: connector body 430: expansion nozzle
440: reinforcing injection nozzle 450: nozzle guard
500: reinforcing frame 510: rotating shaft part
520: reinforcing wire 600: support wire
700: drive cylinder member 710: body portion
720: elastic rod 800: return elastic member

Claims (4)

In the drug spraying device that is detachably installed at the rear of the vehicle in which the loading box 10 is provided and sprays the drug on the lawn,
a main body frame 100 provided with a locking part 110 that is hooked on the rear of the loading box 10 of the vehicle; It is connected to both sides of the main body frame 100 in the longitudinal direction via the joint unit 210, and a plurality of center injection nozzles 220 are formed at regular intervals along the longitudinal direction so that the drug introduced into the center injection nozzle is The drug flow pipe 200 is formed to be sprayed in the direction of the ground through 220; A flow valve unit 300 for controlling the medicament supplied from the medicament tank 20 provided in the loading box 10 in a state installed in the medicament flow pipe 200 to flow into the medicament flow pipe 200; One side in the longitudinal direction is connected to the joint unit 210 so as to be reciprocally rotatable in the direction of the main body frame 100 and the drug flow pipe 200 with the connection part of the joint unit 210 as an axis. A plurality of expansion injection nozzles 430 are formed at regular intervals, and the medicine flowing through the branch pipe part 321 branched from the flow valve unit 300 is introduced into the interior through the expansion injection nozzle 430 . an expanded flow pipe 400 formed to be sprayed in the ground direction; a reinforcing frame 500 having one side in the longitudinal direction of the main body frame 100 installed rotatably up and down through the rotating shaft portion 510; A support wire 600 having one side in the longitudinal direction connected to the reinforcing frame 500 while the other side in the longitudinal direction is connected to the expanded flow pipe 400; is configured to include,
The joint unit 210 is a hollow rotation guide sphere 211 mounted on both ends of the main body frame 100 and the drug flow pipe 200 in the longitudinal direction, and the rotation guide sphere 211 on both sides in the longitudinal direction. It is configured to include a spin connector 212 that is fitted and rotatably installed, and a mounting connector 213 branched from the outer periphery of the spin connector 212 and connected to the expanded flow pipe 400, in the longitudinal direction. It is configured to further include a return elastic member 800 having one side connected to the expansion flow pipe 400 and the other side in the longitudinal direction connected to the mounting connector 213 of the joint unit 210,
The expansion flow pipe 400 is formed to be connected to the end of the main pipe body 410 and the main pipe body 410 in which the expansion injection nozzles 430 are formed at regular intervals, and the mounting connector 213 of the joint unit 210. is made of a connecting pipe body 420 to be rotatably connected, and the other side of the main pipe body 410 in the longitudinal direction is a reinforcing injection nozzle 440 for injecting the drug flowing therein, and the reinforcing injection A drug spraying device for lawns, characterized in that a nozzle guard 450 is installed to protect the nozzle 440.
According to claim 1,
Lawn characterized in that the locking part 110 is formed such that one side in the longitudinal direction is installed to be connected to the main body frame 100, and the hook hook 111 that is formed to be bent downwardly on the other side in the longitudinal direction is formed. drug dispensing device.
3. The method of claim 2,
For lawns, characterized in that the main body frame 100 is provided with a shaking buffer 120 to relieve the impact force transmitted to the main body frame 100 due to the shaking generated during the driving process of the vehicle. drug dispensing device.
4. The method of claim 3,
One side of the telescopic rod 720 installed to be telescopically installed on the body part 710 in a state in which one side of the body part 710 in the longitudinal direction is rotatably installed on the hook mounting part 110 is rotated on the reinforcement frame 500 . A drug dispensing device for lawn, characterized in that it further comprises a driving cylinder member 700 that is installed to be possible to rotate the expansion flow pipe 400 up and down by the expansion and contraction of the expansion rod 720.

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