JP2007074912A - Method for washing hose of power sprayer and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for washing a hose of a power sprayer, capable of surely removing soil, mud, waste, etc., attached to the hose of a power sprayer from the hose surface and favorably carrying out winding of the hose in a winding drum and to provide an apparatus for washing the hose. <P>SOLUTION: A hose is wound around a winding drum in a state in which a motor and a pump are operated and high-pressure liquid obtained by operation of a pump from a nozzle of the top of the hose is jetted to the hose in a process before winding the hose around the winding drum to carry out removal of soil, mud, waste, etc., attached to the hose surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hose cleaning method and apparatus for a power spraying device for spraying a chemical solution or the like onto a crop, for example.

  The conventional power spreader that spreads chemicals, etc. has an improvement in installation space by arranging a prime mover, pump, clutch, driving wheel, hose and a winding drum that winds the hose together in the body frame, A power spreader with good workability is known, for example, as disclosed in Japanese Patent Application Laid-Open No. 2000-157139 (Patent Document 1), and the hose of the power spreader is sent from the winding drum using the power of the prime mover. A winding device is also known as disclosed in Japanese Utility Model Publication No. 5-15506 (Patent Document 2).

  And when carrying out the operation of winding the hose with the winding drum based on the configuration as described in the above publication, soil, mud dirt, dust, etc. adhering while winding on the hose are before being wound on the winding drum. As in the invention to be cleaned in the process, for example, as disclosed in Japanese Patent Application Laid-Open No. 5-23087 (Patent Publication 3), a scraper is attached to a guide bar for winding a hose, and a spray hose is passed through the scraper. Or the winding device which arranges a brush behind and cleans the hose to wind up. In addition, a hose guide that guides outward is formed in a spiral shape in the feeding portion of the hose wound around the winding drum of the machine body, and the load applied to the hose guide during winding is reduced by the helical hose guide, and the hose Japanese Patent Laid-Open No. 2002-332167 (Patent Document 4) describes a hose guide that can easily wind up and remove mud, dust and the like attached to the hose. And in Unexamined-Japanese-Patent No. 2001-186834 (patent document 5), the member which scrapes off soil is provided in the guide mechanism which guides from a winding drum to the exterior of a hose delivery winder, supporting a hose, A hose take-up winder that removes mud and the like adhering to the hose surface by bringing the member into contact with the hose surface is also known. From the above publications, various types of hose cleaning devices have been invented that attempt to remove dirt, mud, dust and the like as much as possible while contacting the hose in the process before winding the hose around the winding drum.

JP 2000-157139 A No. 5-15506 Japanese Patent Laid-Open No. 5-23087 JP 2002-332167 A JP 2001-186834 A

  A method of removing soil, mud, dust, etc. by bringing the hose into contact with a brush or a soil scraping member in a process before winding it on a winding drum while winding the hose as in Patent Documents 3, 4, and 5. In the device, when a lot of mud etc. adheres to the cleaning member such as a brush by the winding operation of the hose, it becomes difficult to remove the mud etc. adhering to the hose. The mud sticks and the hose can not be wound well. In addition, a lot of aquatic plants are often entangled in the hose that has run underwater in the paddy field, and the aquatic plants adhere to cleaning members such as brushes due to the winding of the hose. As a result, a phenomenon that the winding cannot be performed occurs.

  Furthermore, it is not possible to completely remove fine mud adhering to the hose only by a cleaning method in which the hose is brought into contact with a cleaning member such as a brush at the time of winding. It is extremely difficult to remove the worms, and the take-up drum itself with moisture is very likely to be a growth place for pathogenic bacteria.

  Therefore, the present invention is intended to solve such problems, and is obtained by winding the hose around the winding drum while the prime mover and the pump are operated, and by moving the pump from the nozzle at the tip of the hose. The high-pressure liquid jet is sprayed on the hose before it is wound on the take-up drum to remove dirt, mud, dust, etc. adhering to the hose surface. In addition to preventing malfunctions caused by the adhesion of soil and dirt in the plant, it is possible to keep the hose, the winding drum and the power spreader itself hygienic and good The object is to provide a power spreader that itself does not cause the generation of pathogenic bacteria.

  In order to achieve the above object, the present invention provides a hose cleaning method and apparatus for a power spreader according to claims 1 to 9.

  That is, a hose cleaning method for a power spreader according to claim 1 includes a prime mover, a pump that is rotated by power from the prime mover, a hose for injecting liquid pressurized by the pump, and a hose wound around the hose. In a power spreader composed of a take-up drum, when winding a hose around the take-up drum, a liquid pressurized by a pump is sprayed from the tip of the hose to be taken up to the take-up drum. In the process until winding, the surface of the hose to be wound is washed.

  A hose cleaning device for a power spreader according to claim 2 includes a prime mover, a pump that is rotated by power from the prime mover, a hose for ejecting liquid pressurized by the pump, and the hose. In a power spreader composed of a take-up drum, while winding the hose around the take-up drum, the liquid pressurized by the pump from the tip of the hose to be taken up is sprayed onto the surface of the hose and wound. The hose wound up in the process until it is wound up on the take-up drum is washed.

  A hose cleaning device for a power spreader according to claim 3 is provided with a motor, a pump that rotates based on power from the motor, a hose for ejecting liquid pressurized by a pump, and power from the motor. In the power spreader composed of the take-up drum that winds up the hose, the prime mover, the pump, and the take-up drum are configured to interlock their rotation, and the pump and take-up drum can control the power from the prime mover. The pump has a liquid suction hose that takes in the liquid to be pressurized into the pump, and a pressure hose that feeds the liquid pressurized in the pump into the hose of the take-up drum at the base end of the take-up drum. Connected, the take-up drum is constructed so that the hose that allows the pressurized liquid from the pump to flow inside is taken up from the base end of the take-up drum to the tip of the hose with the nozzle The pump operated by the power of the prime mover causes the pressurized liquid to flow into the hose, and the winding drum is rotated by the power of the prime mover, and the pressure is applied from the nozzle at the tip of the hose while winding the hose. In the process until the liquid is taken up by the take-up drum, the hose is washed by spraying the pressurized liquid onto the hose surface so as to face the hose winding direction. It is.

  The hose cleaning device for a power spreader according to claim 4 is the configuration of claim 2 or claim 3, wherein the nozzle at the tip of the hose is C-shaped or U-shaped, and the inner range of the shape is defined by the hose. The hose of the intermediate part from the base end to the tip is configured to move, and the pressurized liquid is sprayed onto the hose surface so as to face the hose wound in the inner peripheral surface direction of the nozzle. It is characterized in that the circumference is cleaned.

  The hose cleaning device for a power spreader according to a fifth aspect of the present invention is the structure of the second, third, or fourth aspect, wherein the hose wound around the take-up drum moves substantially in the center of the nozzle of each shape. The pressurized liquid from the nozzle is jetted substantially evenly around the entire circumference of the hose that moves.

  The hose cleaning device for a power spreader according to claim 6 is the structure according to claim 2, 3, 4 or 5, wherein the nozzle is forward or backward relative to the moving direction of the hose to be wound, or its front-rear direction. Further, a passage position restricting plate for allowing the hose to pass through substantially the center of the nozzle is provided.

  The hose cleaning device for a power spreader according to claim 7 is the structure of claim 2, 3, 4, 5 or claim 6, wherein the nozzle is surrounded by a scattering prevention frame in any of the vertical and horizontal directions and the front and rear direction. In other words, the liquid ejected from the ejection nozzle is configured not to scatter.

  The hose cleaning device for a power spreader according to claim 8 is the structure according to claim 2, 3, 4, 5, 6 or 7, wherein the nozzle at the tip of the hose is composed of a prime mover, a hump, a hose, and a winding drum. It is fixed to the power spreader main body and is detachable.

  The hose cleaning device for a power spreader according to claim 9 is the structure of claim 2, 3, 4, 5, 6, 7 or 8, and the tip of the hose and the nozzle are easily detachable. It is characterized by this.

  According to the hose cleaning method and apparatus for a power spreader according to the present invention, the pump and the winding drum are moved by the prime mover, and the winding drum is rotated in the winding direction to wind the hose, and the tip of the hose The high pressure liquid obtained by moving the pump from the nozzle of the nozzle is sprayed and sprayed onto the hose before the hose is wound around the winding drum to remove dirt, mud, dust, etc. adhering to the hose. It has an effect that can be surely performed. Moreover, it is difficult to wipe the entire circumference evenly with the method of wiping by contact with a brush or the like, but since it is possible to spray high-pressure liquid onto the hose evenly on the surface of the entire circumference, it is left uncleaned. Since there is no contact with the cleaning member such as a brush, dirt does not adhere to the cleaning member and the hose winding operation is not obstructed, and the hose is cleaned while winding the hose well. Has the effect of

  In addition, pathogens that adhere to the hose after completion of work can be removed from the surface of the hose by pressurizing with a pump and using a chemical in the liquid sprayed from the nozzle, so the generation and growth of pathogens during periods when the power spreader is not used It has the effect which prevents.

  1 is a schematic diagram of a power spreader according to an embodiment of the present invention, FIG. 2 is a diagram showing the shape of a nozzle according to an embodiment of the present invention, and FIG. 3 is another example of a nozzle according to the embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing a state in which liquid is ejected from a nozzle in a wound state of a hose. FIG. 5 is a schematic cross-sectional view showing a state where the periphery of the nozzle is surrounded by a scattering prevention frame. FIG. 6 is a diagram illustrating the joining of the nozzle and the power spreader. FIG. 7 is a diagram showing another joint between the nozzle and the power spreader.

  A hose for applying pressure to the liquid sucked from the liquid surface and injecting the liquid pressurized by the pump at the target location by a pump that uses the engine or motor as the prime mover and the power (rotation) from the prime mover And in a power spreader equipped with a take-up drum for winding up the hose, it was pressurized from the tip of the hose in the process until it was taken up by the take-up drum while winding the hose around the take-up drum. The liquid is ejected to clean the surface of the hose that is wound up.

  The take-up drum is configured to take up the hose by power (rotation) from the prime mover, and the prime mover, the pump, and the take-up drum are linked to each other and can control the rotation from the prime mover. In the pump, a liquid suction hose that takes in the liquid to be pressurized into the pump and a pressure hose for feeding the liquid pressurized in the pump into the take-up drum are connected to the base end of the take-up drum. A hose that allows pressurized liquid from the pump to flow inside is wound from the base end of the take-up drum to the tip of the hose equipped with the nozzle, and the pump that is operated by the power of the prime mover is liquid Liquid is sucked from the suction hose and pressurized in the pump. The pressurized liquid is sent to the pressure hose and flows into the hose connected to the base end of the take-up drum. While rotating the take-up drum according to the power and taking up the hose, in the process until the pressurized liquid is taken up from the nozzle at the tip of the hose by the take-up drum, it opposes the take-up direction of the hose. The pressurized liquid is sprayed onto the hose surface to wash the hose.

  The nozzle at the tip of the hose is C-shaped or U-shaped, and the inner hose from the base end to the tip of the hose moves within the inner range of the shape. Opposite the hose wound in the surface direction, the pressurized liquid was washed on the hose surface by spraying the pressurized liquid evenly over the entire hose surface. Furthermore, the hose wound around the take-up drum is forward, rearward, and rearward with respect to the hose where the passage position restricting plate is wound so that the hose wound around the inner side of the C-shaped or U-shaped nozzle travels (moves). The configuration is provided in both directions.

  In addition, in order to prevent scattering of liquid sprayed from the nozzle to the hose and scattering of dirt, mud, dust, etc., when the pressurized liquid is sprayed to the hose, the nozzle is vertically and horizontally And it is set as the structure provided with a scattering prevention frame in the front-back direction. Further, the passing position restricting plate may be a part of the scattering prevention frame, and the scattering preventing frame provided with the passing position restricting plate and the nozzle are integrally formed and detachably fixedly connected to a part of the main body of the power spreader. In addition, the nozzle and the tip of the hose are detachable.

  The power spreader 1 includes a prime mover 2 such as an engine or a motor, a pump 3, and a take-up drum 4. The power (rotation) of the prime mover 2 is transmitted to the pump 3 and the take-up drum 4, and each is linked and controlled. It has become. The pump 3 includes a liquid suction hose 14 for sucking liquid from the liquid surface into the pump 3 and a pressure hose 15 for sending pressurized liquid into the hose 6 wound around the take-up drum 4. The overflow hose 16 for reducing the liquid may be provided outside the pump 3 when the pressurized liquid is not fed into the pressure hose 15 when the three are movable or for overflow.

  The pressure hose 15 is joined to the base end of the hose 6 positioned substantially at the center of the winding drum 4, and the hose 6 is wound around the winding drum 4 in a multi-layered manner. The tip of the hose 6 is connected to a nozzle 7, and the nozzle 7 is fixed to any part of the power spreader 1 by a fixing material 13.

  Reference numeral 12 denotes a wheel, which is provided for easily moving the power spreader 1, and further, a power spreader which transmits the power of the prime mover 2 to the wheel 12 and is self-propelled.

  The shape of the nozzle is the shape of the C-type nozzle 8 as shown in FIG. 2 or the U-type nozzle 9 of FIG. 3, and has a plurality of injection ports 10 in the inner direction. Thus, it is sufficient that the liquid can be uniformly sprayed to the entire circumference of the hose surface when the jet ports 10 are provided in parallel in the front-back direction with respect to the winding direction of the hose.

  In the cross-sectional view of the nozzle 7 shown in FIG. 5, a splash prevention frame 17 is provided in any one or all of the up / down / left / right directions and the front / rear direction surrounding the nozzle 7 to prevent scattering of liquid ejected from the ejection port 10 of the nozzle 7. It is something to try. The scattering prevention frame 17 is fixed to the nozzle 7 and is configured so that the bottom surface is opened as much as possible so that mud or the like dropped from the hose by liquid injection and water do not remain in the scattering prevention frame 17. ing.

  Further, the forward and backward scattering prevention frame 17 with respect to the hose movement direction is provided with a passage position restricting plate 18 either on the front side or the rear side and both on the hose movement direction. The hose moves through the center. The passage position restricting plate 18 may be made of a resin member having a low coefficient of friction that does not become a resistance even when the hose contacts and moves.

  Reference numeral 11 denotes an attaching / detaching mechanism, which makes it possible to easily remove the tip of the hose from the nozzle 7 as necessary.

  When cleaning the hose when spraying of the liquid chemical in the house, field and paddy field is completed, or when the time to use the power spreader 1 is finished and cleaning the hose for long-term storage In a state where the hose 6 is sent from the take-up drum 4, the spray nozzle for spraying normal agricultural chemicals attached to the tip of the hose is removed, and a nozzle 7 for washing the hose is attached to the tip of the hose.

  The pump operated by the power of the prime mover takes in a liquid obtained by diluting water and chemicals for the purpose of controlling pathogens into the pump 3 with the liquid suction hose 14, pressurizes it, and then passes through the pressure hose 15 to take up the drum 4. Is sent to the base end of the hose 6 provided at substantially the center of the hose, then reaches the tip of the hose and is sprayed from the nozzle 7. The nozzle 7 has the shape of the C-type nozzle 8 in FIG. 2 and the U-shaped nozzle 9 in FIG. 3, and the part that starts cleaning the middle part of the hose between the proximal end and the distal end of the hose 6 is the central part of the nozzle. The winding drum 4 is rotated according to the power of the prime mover, and the intermediate portion of the hose 6 is gradually wound around the winding drum 4 while the passage position restricting plate 18 causes the substantially center of the nozzle 7 to be wound around the winding drum 4. The pressurized liquid is injected substantially uniformly over the entire circumference of the hose from the injection port 10 provided in the inner direction of the nozzle 7 so as to face the taking direction. The injection of the pressurized liquid can be removed by the pressure of the liquid even if it is fine mud adhering in a fine step on the surface of the hose 6.

  Furthermore, since the anti-scattering frame 17 is provided so as to surround the nozzle so that the liquid ejected from the ejection port 10 does not scatter around, the liquid ejected from the ejection port 10 of the nozzle 7 contains a medicine. Even so, it is possible to prevent contact with the worker as much as possible.

  6 and 7 include an aligned winding device 20 on the winding drum 4 and a loading / unloading head 21 on the aligned winding device 20 so that the hose is aligned and wound on the winding drum 4 during winding. At the same time, the power spreader is configured to be rotatable about the vertical axis around the loading / unloading head 21 and drawn out from any front / rear / right / left direction of the power spreader 1 by the hose support portion by the guide arm 19. Machine. A winding roller 22 and a pressure roller 23 are provided inside the aligned winding device 20 and the loading / unloading head 21, and the hose 6 is disposed between the rollers. The rotation of the winding roller 22 sends the hose 6 from the winding drum 4. It is what is doing.

  The power spreader 1 shown in FIGS. 6 and 7 transmits the power of the prime mover 2 to the pump 3 and the transmission 5, transmits the power from the transmission 5 to the winding drum 4 and the winding roller 22, and sends out the hose. At the time of winding and winding, the winding drum 4 is controlled so that the hose 6 is not loosened or excessively wound.

  At the tip of the guide arm 19, the nozzle 7 provided with the passage position restricting plate 18 and covered with the anti-scattering frame 17 can be easily mounted by the fixing material A 24 when the hose cleaning work is performed. The tip of the hose can also be easily attached to the nozzle 7 by the attaching / detaching mechanism 11.

  In FIG. 7, the fixing material B25 for fixing the nozzle 7 is joined to the main body frame of the power spreader 1. The fixing material B25 is preferably rotatable in the horizontal direction with respect to the main body frame of the power spreader and further expandable in the vertical direction. The fixing material B25 has a cleaning start portion in the middle portion of the hose at the center of the nozzle 7. It is good to be comprised so that horizontal rotation and the expansion-contraction of an up-down direction can be fixed after arrangement | positioning.

  Necessary when cleaning hoses that have already been delivered after spraying of liquid chemicals in the house, fields and paddy fields, or when cleaning the power spreader for long-term storage after the time when the power spreader is used. Accordingly, the power of the prime mover 2 is controlled by the transmission 5 so that the winding roller 22 in the aligned winding device 20 is rotated in the direction in which the hose 6 is sent out, and the hose 6 in the range where the surface of the hose is cleaned is fed out. Prepare the hose surface for cleaning. After that, if the hose cleaning range is unwound from the winding drum 4, the normal liquid spray nozzle attached to the tip of the hose used at the time of spraying the liquid medicine in the house, the field and the paddy field is removed from the tip of the hose. The nozzle 7 for detaching and hose washing is attached by the attaching / detaching configuration 11 at the tip of the hose. Then, the nozzle 7 is fixed to the main body frame of the power spreader by the fixing material A24 with the tip of the guide arm 19 or the fixing material B25. Thereafter, the hose 6 pressurizes the middle part of the nozzle 7 of either the C-type nozzle 8 or the U-type nozzle 9 in the position where the intermediate portion of the hose 6 passes the passage position restricting plate 18 with the hose facing the moving direction. A cleaning start portion in the middle portion of the hose is disposed at a position where the liquid is ejected from the ejection port 10.

  Then, the liquid suction hose 14 and the overflow hose 16 are put into the cleaning tank 26 containing the cleaning liquid from the tank used for spraying the liquid medicine in the house, the field and the paddy field. The liquid in the washing tank 26 may be water, a drug that removes pathogenic fungi attached to the inside of the hose or the hose surface.

  The pump 3 is operated depending on the power of the prime mover 2, the liquid in the washing tank 26 is taken into the pump 3 from the liquid suction hose 14, pressurized, and the hose proximal end wound around the winding drum 4 from the pressure hose 15. The pressurized liquid is ejected from the ejection port 10 of the nozzle 7 through the attachment / detachment mechanism 11 at the tip of the hose. The hose sprayed with the pressurized liquid from the injection port 10 substantially evenly around the circumference has a winding drum 4 that receives rotation from the transmission 5 while removing dirt, mud, dust, etc. adhering to the surface. By rotating in the winding direction, the hose moves substantially in the center of the nozzle 7 and cleans the surface of the hose. If the liquid sprayed onto the hose 6 is used as a pathogen control agent, the pathogen is controlled or controlled not only on the hose surface but also the inner surface of the hose, and the pathogen is generated and propagated until the next power spreader is used. This makes it possible to store a good power spreader without any problems.

It is a schematic diagram of a power spreader concerning an embodiment of the invention. It is a figure which shows the shape of the nozzle of embodiment of this invention. It is a front view which shows the other example of the nozzle of embodiment of this invention. It is a cross-sectional schematic diagram which shows the injection state of the liquid from the nozzle in the winding state of a hose. It is a cross-sectional schematic diagram showing the state where the circumference | surroundings of the nozzle were enclosed with the scattering prevention frame. It is a figure showing joining of a nozzle and a power spreader. It is a figure showing other joining of a nozzle and a power spreader.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power spreader 2 Prime mover 3 Pump 4 Winding drum 5 Transmission 6 Hose 7 Nozzle 8 C type nozzle 9 U type nozzle 10 Injection port 11 Detachment mechanism 12 Wheel 13 Fixing material 14 Liquid suction hose 15 Pressure hose 16 Overflow hose 17 Anti-scattering frame 18 Passing position regulating plate 19 Guide arm 20 Aligned winding device 21 Loading / unloading head 22 Winding roller 23 Pressing roller 24 Fixing material A
25 Fixing material B
26 Washing tank

Claims (9)

Prime mover,
A pump that rotates depending on the power from the prime mover,
A hose for injecting liquid pressurized with a pump;
In a power spreader composed of a winding drum that winds up the hose,
When the hose is wound around the winding drum, the surface of the hose that is wound up in the process of injecting the liquid pressurized by the pump from the tip of the wound hose until it is wound up by the winding drum A hose cleaning method for a power spreader, wherein the hose is cleaned. Prime mover,
A pump that rotates depending on the power from the prime mover,
A hose for injecting liquid pressurized with a pump;
In a power spreader composed of a winding drum that winds up the hose,
While winding the hose around the take-up drum, the liquid pressurized by the pump is sprayed from the tip of the hose to be taken up onto the surface of the hose and taken up in the process until it is taken up by the take-up drum. A hose cleaning device for a power spreader, characterized in that the hose is cleaned. A prime mover and a pump that rotates with the power from the prime mover,
A hose for jetting liquid pressurized with a pump;
In the power spreader composed of a winding drum that winds up the hose depending on the power from the prime mover,
The prime mover, the pump, and the winding drum are configured to interlock their rotations, and the pump and the winding drum can control power from the prime mover,
The pump is connected to the base end of the take-up drum with a liquid suction hose for taking in the liquid to be pressurized into the pump and a pressure hose for sending the liquid pressurized in the pump into the hose of the take-up drum,
The take-up drum is configured such that a hose that flows pressurized liquid from the pump into the inside is wound from the base end of the take-up drum to the tip of the hose provided with a nozzle.
The pump operated with the power of the prime mover causes the pressurized liquid to flow into the hose, while the winding drum is rotated with the power of the prime mover to wind the hose, and the pressurized liquid is wound from the nozzle at the tip of the hose. In the process of winding up on the take-up drum, the hose is washed by spraying pressurized liquid onto the hose surface so as to oppose the winding direction of the hose. Hose cleaning device.   The nozzle at the tip of the hose is C-shaped or U-shaped, and the inner range of the shape is configured so that the intermediate hose from the base end to the tip of the hose moves, and the inner peripheral direction of the nozzle 4. The power sprayer according to claim 2, wherein the pressurized liquid is sprayed onto the hose surface so as to face the hose wound around the hose and the substantially entire circumference of the hose is washed. Machine hose cleaning device.   The hose wound around the take-up drum is configured such that the hose moves substantially in the center of each shape of the nozzle, and the pressurized liquid from the nozzle is jetted substantially uniformly around the entire circumference of the hose. The hose cleaning device for a power spreader according to claim 2, 3 or 4.   The nozzle is provided with a passage position restricting plate for allowing the hose to pass through substantially the center of the nozzle in front of, behind, or in the front-rear direction with respect to the moving direction of the hose to be wound. The hose cleaning device for a power spreader according to claim 3, 4 or 5.   The nozzle is configured such that any or all of the up / down / left / right direction and the front / rear direction are surrounded by a scattering prevention frame so that the liquid ejected from the ejection nozzle does not scatter. A hose cleaning device for a power spreader according to claim 5 or 6.   The nozzle at the tip of the hose is fixed to a power spreader main body composed of a prime mover, a hump, a hose and a winding drum, and is detachable. Or the hose cleaning apparatus of the power spreader of Claim 7. The hose cleaning device for a power spreader according to claim 2, 3, 4, 5, 6, 7 or 8, wherein the tip of the hose and the nozzle are easily detachable.

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