EP3397392B1 - Pneumatic cleaning gun - Google Patents

Description

The present invention relates to a cleaning gun, in particular a pneumatic cleaning gun.

In the course of an increased quality of life in terms of clothing, food, housing, travel and leisure, every household has a vehicle such as a car, limousine, etc. When the vehicle rolls on the streets, it can hardly be avoided that dirt such as sandy loam or dusty dirt accumulates on it fix. Therefore, after the vehicle has been driven for a period of time, it needs to be cleaned and washed in order to keep the vehicle clean. Therefore, many vehicle owners use a day off to bring their vehicle to a car wash for cleaning. When the qualified personnel is carrying out the cleaning work for the vehicle, the cleaning agent is first applied to the vehicle with a sponge and rubbed in, then the cleaning foam is rinsed off with water from a hose. Since the water pressure from the water hose is often insufficient, the dust dirt on the vehicle cannot be easily washed off cleanly and residues of contaminants such as dusty dirt and sandy loam remain on the vehicle.

Therefore, those skilled in the art have developed a pneumatic spray cleaning gun with a rotating mechanism. The rotary type pneumatic spray cleaning gun uses high pressure air to suck the liquid inside the liquid container through the liquid extraction hose so that the liquid is mixed with the high pressure air and further sprayed outside through the nozzle. This increases the cleaning capacity on the vehicle.

In addition, those skilled in the art have developed a rotary type pneumatic spray cleaning gun with vacuum capability. In addition to an air inlet opening for spraying the air and a liquid inlet opening for spraying the liquid, the pneumatic spray cleaning gun with a rotating mechanism with vacuum suction capability also has an air intake opening for sucking in the dust. Since the air inlet opening, the liquid inlet opening and the air suction opening all therefore require an external connecting hose to be connected to the container that provides the air or the liquid, the number of openings to be joined is greater without the composition of the external connecting hoses changing should change. It is therefore one of the problems to be solved by the designer how to make the assembly of the pneumatic spray cleaning gun with rotating mechanism with the external connecting hoses more practical.

From the US 2015/0000705 A1 a vacuum spray device and its uses are previously known.

From the EP 1 857 190 A1 a spray gun for fluid and a cleaning device using the same are previously known.

From the DE 20 2013 105 041 U1 a cleaning device for cleaning surfaces is previously known by providing at least one gaseous, pressurized pressure medium and at least one cleaning active cleaning medium for turbulence in a nozzle assembly of the cleaning device by means of a rotating nozzle arrangement.

Furthermore, from the DE 10 2010 034 921 A1 a nozzle for the application of an application agent previously known.

The novelty of the invention is that a pneumatic cleaning gun is provided which increases the practicality of the assembly between the pneumatic spray cleaning gun with rotating mechanism and the external connecting hoses.

A pneumatic cleaning gun according to the present invention has a gun housing with a compressed air connection, a liquid nozzle with a nozzle jacket and an air suction pipe which on the one hand opens into the jacketed flow channel and on the other hand can be connected to a suction device via a suction hose in order to suck off dirt particles through the flow channel.

Depending on the situation in which the cleaning gun is used, the suction hose can interfere with work if it interferes with the intended cleaning work.

The invention overcomes this disadvantage by improving a cleaning gun in that the air intake pipe is not rigidly attached to the cleaning gun, but is pivotable. The air intake pipe can therefore be brought into several different positions of use, so that the user can choose the most comfortable or expedient position of use and adjust the air intake pipe accordingly.

The pneumatic cleaning gun disclosed in one embodiment includes a gun housing, a nozzle jacket, and an air intake tube. The gun body includes a gun body and a liquid nozzle. The liquid nozzle is connected to the gun body. The nozzle jacket includes a mounting sleeve and a jacket sleeve. The mounting sleeve is attached to the gun body of the gun body. The sheathing sleeve is rotatably attached to the mounting sleeve and surrounds the sheathed flow channel, and the liquid nozzle is also located inside the sheathed flow channel of the sheathing sleeve. The air intake pipe is rigidly connected to the casing sleeve. The air intake pipe has an air intake opening. The air intake opening leads into the jacketed flow channel. The mounting sleeve has several first positioning structures. The jacket sleeve has a second positioning structure. The jacket sleeve can rotate in relation to the mounting sleeve. In addition, the second positioning structure can optionally be in one of the first Snap in the positioning constructions so that the air intake pipe has several positions of use.

The pneumatic cleaning gun according to the above-mentioned embodiment is divided into two sections by the nozzle casing. One section is a rigidly attached mounting sleeve, the other section is a rotatable jacket sleeve. Depending on the assembly method preferred by the user, the latter can be connected to the air intake pipe of the casing sleeve and rotated into the required rotational position. It follows from this that not only can the practicality of mounting the air intake pipe on the cleaning gun be increased, but rather a disruption of the cleaning process by the air intake pipe can be avoided.

The pneumatic cleaning gun disclosed in another embodiment includes a gun body, a nozzle jacket, and a swivel tube. The gun body includes a gun body, a handle, and a liquid nozzle. The handle and the liquid nozzle are each connected to the two opposite sides of the gun body. The nozzle jacket is attached to the gun body of the gun body. There is a shroud cavity around the nozzle shell and the liquid nozzle is inside the shroud cavity of the nozzle shell. The rotary joint tube is connected to the nozzle jacket. The swivel connection tube has an air intake opening. The air intake opening leads to the casing cavity. The rotary connection tube can rotate relative to the gun housing and has at least a first use position and a second use position.

The pneumatic cleaning gun according to the last-mentioned embodiment shows a rotary connection tube which can be rotated in relation to the connecting pieces. The rotary connection tube can be rotated into the position preferred by the user and thus assembled with the outer connection channels.

The above explanations of the invention and the explanations of the following embodiments serve to demonstrate and explain the principle of the invention.

Figure description

Figure 1:

Three-dimensional representation of the pneumatic cleaning gun according to the first embodiment of the invention;

Figure 2:

Sectional view of the Figure 1 ;

Figure 3:

Detail display off Figure 1 ,

Figure 4:

Detail representation from a different perspective of the Figure 2 ;

Figure 5:

Representation of the first position of use of the pneumatic cleaning gun Figure 1 ,

Figure 6:

Sectional view of the Figure 5 ;

Figure 7:

Representation of the second position of use of the pneumatic cleaning gun Figure 1 ,

Figure 8:

Sectional view of the Figure 7 ;

Figure 9:

three-dimensional representation of the pneumatic cleaning gun according to the first embodiment of the invention;

Figure 10:

Detail display off Figure 9 ;

Figure 11:

Sectional view of the Figure 9 ;

Figure 12:

Detail display off Figure 10 ;

Figure 13:

Detailed representation of a different perspective on the nozzle casing and rotary connection pipe Figure 12 ;

Figure 14, 15:

Representation of the positions of use of the pneumatic cleaning gun Figure 9 ;

Figure 16:

three-dimensional representation of a section of how the nozzle jacket is attached to the gun housing, as shown in the second embodiment of this invention;

Figure 17:

Detailed representation of the nozzle casing Figure 16 ;

Figure 18:

Sectional view of the Figure 16 .

Please look at those Figures 1 and 2 . Figure 1 Fig. 3 is a three-dimensional view of the pneumatic cleaning gun according to the first embodiment of the invention. Figure 2 FIG. 3 is a sectional view of FIG Figure 1 .

The pneumatic cleaning gun 10 of the first embodiment includes a gun housing 100, a nozzle jacket 200, and an air suction pipe 300. In addition, the pneumatic Cleaning gun 10 from this exemplary embodiment has a flow disturbance ring 400 and a deflection ring 500.

The gun housing 100 comprises a gun body 110, a handle 120, a liquid nozzle 130 and a liquid container 140. The handle 120 and the liquid nozzle 130 are connected to the gun body 110 on the opposite side thereof. The extension direction of the handle 120 crosses the extension direction of the gun body 110. For example, if the liquid nozzle 130 has a curved shape, the extension direction of the liquid nozzle 130 runs parallel to the extension direction of the gun body 110. The liquid container 140 is connected to the gun body 110 and is used to store Water or cleaning fluid. It should be noted that in this exemplary embodiment the liquid nozzle 130 has a curved shape so that the cleaning effect of the pneumatic cleaning gun 10 is increased by the effect of the centrifugal force. However, their shape is not limited to this; in other exemplary embodiments, the liquid nozzle 130 can also assume a rectilinear shape.

More precisely, the pistol housing 100 has an air duct 150 and a liquid hose 160. The air duct 150 extends from the end of the handle 120 of the pistol housing 100, which faces away from the pistol body 110, to the end of the liquid nozzle 130, which is the pistol body 110 is turned away. The handle 120 serves as a plug connection for a compressed air line 20, and the compressed air line 20 is connected to the air duct 150. The compressed air line 20 is connected to a compressed air device (not shown). The liquid hose 160 extends from the interior of the liquid container: 140 to the end of the liquid nozzle 130 which faces away from the gun body 110. That means that the Fluid hose 160 is partially outside of air hose 150. In addition, the other part of the liquid hose 160 lies within the air channel 150 and extends from the gun body 110 to the liquid nozzle 130.

When the compressed air device is activated, the high pressure air generated by the compressed air device serves to pass through the air passage 150 and is sprayed from the liquid nozzle 130. In addition, the high pressure air can produce a lifting effect and suck in the liquid inside the liquid container 140, which then flows through the liquid hose 160 and is sprayed out through the liquid nozzle 130.

Please look at those Figures 3 and 4th . Figure 3 is a detailed display Figure 1 , Figure 4 is a detailed display Figure 2 from a different angle.

The nozzle jacket 200 comprises a mounting sleeve 210 and a jacket sleeve 220. The mounting sleeve 210 is attached to the gun body 110 of the gun housing 100. The cover sleeve 220 is rotatably attached to the mounting sleeve 210. In this exemplary embodiment, the mounting sleeve 210 comprises an inner mounting ring 211 and an outer mounting ring 212. The inner mounting ring 211 is screwed to the gun body 110. The outer mounting ring 212 is pulled over the inner mounting ring 211 and snapped into it. The outer mounting ring 212 has an outer surface 212A and a plurality of first positioning structures 212B. These first positioning structures 212B are, for example, a plurality of raised ribs located on the outer surface 212A. In addition, these raised ribs, by which they protrude from the outer surface 212A, increase in height from that of the jacket sleeve facing side to the side facing away from the cladding sleeve gradually to.

The cover sleeve 220 has an inner side 221, a plurality of second positioning structures 222 and a plurality of snap-in grooves 223. The inside 221 surrounds the covered flow channel 221A, and the liquid nozzle 130 is located inside the flow channel 221A of the cover sleeve 220. These second positioning structures 222 and these snap-in grooves 223 are located on the inside 221. In addition, the second positioning structures 222 are a plurality of concave grooves that can each separately snap into the first positioning structures 212B to position the cover sleeve 220 at the rotational position.

In this embodiment there are a plurality of second positioning structures 222. However, the shape is not limited to this, in other embodiments there may be only a single second positioning structure 222, and this second positioning structure can selectively snap into one of the first positioning structures.

One end of the air intake pipe 300 is rigidly connected to the casing sleeve 220. The other end of the air suction pipe 300 has an air suction port 310, and the air suction port 310 leads into the covered flow passage 221A. Since one end of the air intake pipe 300 is rigidly connected to the casing sleeve 220, the air intake pipe 300 can be moved along with the casing sleeve 220 and can rotate relative to the mounting sleeve 210. This contributes to the fact that the air intake pipe 300 has several positions of use.

In addition, the air intake opening 310 serves to attach an air intake hose 30, the air intake hose 30 being connected to an air intake device (not shown). If the air suction device is put into operation, the air suction device can suck off contaminants in the interior of the sheathed flow channel 221A in order to further increase the cleaning effect of the pneumatic cleaning gun 10.

The flow disturbance ring 400 is attached to the shroud sleeve 220 and is located on the shrouded flow channel 221A. More precisely, the flow disturbance ring 400 comprises a ring 410 and a plurality of flow disturbance plates 420. The ring 410 is located in the interior of the encased flow channel 221A and is separated from the encasing sleeve 220. These flow baffle plates 420 protrude beyond the ring 410 and each engage in the snap-in grooves 223 of the casing sleeve 220.

The deflecting ring 500 is detachably attached to the end of the sheathing sleeve 220 that faces away from the mounting sleeve 210. It should be noted that in other exemplary embodiments, the deflecting sleeve 500 can also form a single body with the sheathing sleeve 220.

Instead of the detachable deflecting ring 500 shown, differently shaped front nozzles can also be plugged onto the casing sleeve 220. In particular, the front nozzle can be equipped with a brush ring that can act mechanically on the dirt to be removed when working with the cleaning gun. The front nozzle can also have a roller for loosening dirt fibers, as is known from conventional carpet vacuum cleaners. The front nozzle can also be designed to be elongated in order to reach the dirt in difficult-to-access gaps and narrow recesses and suck it off. Finally, the front nozzle can be provided with several lateral recesses on the circumference of its outer opening, which serve to let air in at the side when the front nozzle is attached, so that the nozzle does not get stuck due to the negative pressure effect, but the inflowing air can continue to carry away dirt particles. Such a toothed front nozzle can have a wave-shaped edge or be shaped like a saw blade. Sucking off is advantageously facilitated by the measures mentioned.

Please look at those Figures 5 to 8 . Figure 5 is a representation of the first use position of the pneumatic cleaning gun from FIG Figure 1 . Figure 6 FIG. 3 is a sectional view of FIG Figure 5 . Figure 7 FIG. 10 is an illustration of the second position of use of the pneumatic cleaning gun 10 from FIG Figure 1 . Figure 8 FIG. 3 is a sectional view of FIG Figure 7 .

If the air intake device is to the left of the user, the air intake hose 30, which connects the air intake device to the pneumatic cleaning gun 10, is on the left side of the pneumatic cleaning gun 10. In order to make use and assembly more practical, you can - as in the Figures 5 and 6th shown - rotate the casing sleeve 220 onto the left side of the gun body. As a result, not only can the air intake hose 30 be mounted more easily on the air intake pipe 300 of the pneumatic cleaning gun 10, but the air intake hose 30 also has no disruptive effect on the user during the cleaning process.

However, should the air intake hose 30 have a disruptive effect on the user or the object to be cleaned during the cleaning process, the user can turn the casing sleeve 220 in the direction indicated by arrow a by the angle of rotation of the sheathing sleeve 220 to be easily corrected and to avoid impairment by the air intake hose 30.

From the above procedure it can be seen that the relatively rotatable sheathing sleeve 220 can be rotated into the position preferred by the user in order to mount the air intake hose 30. This increases the practicability of mounting the air suction hose 30 on the pneumatic cleaning gun 10.

In the pneumatic cleaning gun 10 according to the above-mentioned embodiment, the nozzle casing 200 can be separated into two parts, one part being the rigidly attached mounting sleeve 210 and the other part being the rotatable casing sleeve 220 can be rotated to the required rotational position by the user preferred assembly method. This not only increases the practicability of mounting the air intake hose 30 on the pneumatic cleaning gun 10, but also during the cleaning process the air intake hose 30 has no disruptive effect on the user.

Please look at those Figures 9 to 11 . Figure 9 Fig. 13 is a three-dimensional view of the pneumatic cleaning gun according to the first embodiment of this invention. Figure 10 is a detailed display Figure 9 . Figure 11 FIG. 3 is a sectional view of FIG Figure 9 .

The pneumatic cleaning gun 10 of this exemplary embodiment comprises a gun housing 100 and a nozzle jacket 200 with a rotary connection tube 300C and a fixing piece 400C. The gun housing 100 comprises a gun body 110, a handle 120, a liquid nozzle 130 and a liquid container 140. The handle 120 and the liquid nozzle 130 are connected to the gun body 100 on the opposite side thereof. The direction of travel of the handle 120 crosses the extension direction of the gun body 110. If the liquid nozzle 130 has a curved shape, for example, the extension direction of the liquid nozzle 130 runs parallel to the extension direction of the gun body 110. The liquid container 140 is connected to the gun body 110 and is used to store water or Cleaning fluid. It should be noted that in this exemplary embodiment the liquid nozzle 130 has a curved shape so that the cleaning effect of the pneumatic cleaning gun 10 is increased by the effect of the centrifugal force. However, their shape is not limited to this; in other exemplary embodiments, the liquid nozzle 130 can also assume a rectilinear shape.

More precisely, the pistol housing 100 has an air duct 150 and a liquid hose 160. The air duct 150 extends from the end of the handle 120 of the pistol housing 100, which faces away from the pistol body 110, to the end of the liquid nozzle 130, which is the pistol body 110 is turned away. The handle 120 serves as a plug connection for a compressed air line 20, and the compressed air line 20 is connected to the air duct 150. The compressed air line 20 is connected to a compressed air device (not shown). The liquid hose 160 has a liquid inlet 161 and a liquid outlet 162. The liquid inlet 161 of the liquid hose 160 is located inside the liquid container 140. The liquid hose 160 also passes through the gun body 110 and is partially located inside the air channel 150. The liquid outlet is also located 162 of the liquid hose 160 at the end of the liquid nozzle 130 which faces away from the gun body 110. This means that the liquid inlet 161 of the liquid hose 160 is located outside the air channel 150. There is also the liquid hose 160 is partly inside the air channel 150 and extends from the gun body 110 to the liquid nozzle 130.

When the compressed air device is activated, the high pressure air generated by the compressed air device serves to pass through the air passage 150 and is sprayed from the liquid nozzle 130. In addition, the high pressure air can produce a lifting effect and suck in the liquid inside the liquid container 140, which then flows through the liquid hose 160 and is sprayed out at the liquid outlet 162.

Please look at those Figures 11 to 13 . Figure 12 is a detailed display Figure 10 . Figure 13 FIG. 14 is a detailed illustration of a different angle of nozzle casing 200 with rotary connection tube 300C from FIG Figure 12 . The nozzle jacket 200 is attached to the gun body 110 of the gun housing 100, and it also envelops the liquid nozzle 130 of the gun housing 100. Explained in detail, this means that the nozzle jacket 200 in this exemplary embodiment comprises a main body 210C and an attachment ring 220C. The main body 210C has an inner surface 211C and an outer surface 212C opposing each other. The inner surface 211C envelops the shroud cavity 230, and the liquid nozzle 130 is located within the shroud cavity 230 of the nozzle shroud 200. One end of the main body 210C has an inwardly recessed cavity 213 of the outer surface 212C (as in FIG Figure 11 shown). The nozzle casing 200 further has a first opening 240 and a second opening 250, the first opening 240 and the second opening 250 each penetrating the main body 210C separately and being located on the opposite side of the casing cavity 230. The attachment ring 220C is about the Recess 213 of the main body 210C pulled over it, and the main body 210C together with the attachment ring 220C forms an annular slide channel 260.

The rotary joint pipe 300C includes a connector ring 310C and a branch pipe 320. The branch pipe 320 is connected to the male connector ring 310C, and the outer shape of the rotary joint pipe 300C may be, for example, a "Y" shape. One end of the branch pipe 320 facing away from the plug-in connection ring 310C has an air intake opening 321. The rotatable point of the plug-in connection ring 310C is located on the annular slide channel 260 and enables the rotary connection pipe 300C to have a first use position (see FIG Figure 14 ) and a second position of use (see Figure 15 ) to take. When the rotary connection pipe 300C is in the first use position, then the air suction opening 321 of the branch pipe 320 penetrates the first opening 240 and leads into the casing cavity 230. When the rotary connection pipe 300C is in the second use position, then the air suction opening 321 of the branch pipe 320 penetrates the second opening 250 and leads into the casing cavity 230. The air intake opening 321 serves to connect an air intake hose 30 (see FIG Figure 14 ) to infect. The air intake hose 30 is connected to an air intake device (not shown). If the air suction device is put into operation, the air suction device can suck off contaminants in the interior of the casing cavity 230 in order to further increase the cleaning effect of the pneumatic cleaning gun 10.

In the present exemplary embodiment, the pneumatic cleaning gun 10 further comprises a first positioning device 610 and two second positioning devices 620a and 620b, each of which is located adapt to each other. The first positioning jig 610 is located on the inside of the connector ring 310C. The two second positioning devices 620a and 620b are located at the location of the cavity 213 of the main body 210C, that is, they are located on the left and right sides of the main body 210C, respectively. If the rotary connection tube 300C is in the first use position, then the first positioning device 610 moves on one of the two second positioning devices 620a or 620b, whereby the rotary connection tube 300C is brought into the first use position. When the rotary connection tube 300C is in the second use position, then the first positioning device 610 moves to the other of the two second positioning devices 620a or 620b, whereby the rotary connection tube 300C is brought into the second use position.

Please look at those Figures 14 and 15th . the Figures 14 and 15th are representations of the use of the pneumatic cleaning gun Figure 9 .

If the user is right-handed, he usually holds the handle 120 of the pistol housing 100 with his right hand. Therefore, if the user wants to attach the air suction hose 30 to the air suction opening 321 of the branch pipe 320, he can - as in FIG Figure 14 - turn the branch pipe 320 in the direction of arrow a on the left side of the gun housing 100 in order to insert the air intake hose 30 directly into the branch pipe 320 with the left hand.

If, on the other hand, the user is left-handed, he can - as in Figure 15 - turn the branch pipe 320 in the direction of arrow b on the right side of the gun housing 100 in order to insert the air suction hose 30 directly into the branch pipe 320 with the right hand.

From the operations described above, it can be seen that one can attach the outer air suction hose 30 by means of the relatively rotatable rotary connection pipe 300C in the position of this rotary connection pipe 300C preferred by the user, whereby the assembly of the cleaning gun 10 with external connection hoses is made more practical.

Note that, in the above embodiment, the number of openings is two so that the air suction opening 321 of the branch pipe 320 can be set to the first opening 240 or the second opening 250. However, the settings are not limited to these, but in other exemplary embodiments (not listed) the number of openings can also be one, with the single opening extending from one side of the casing cavity 230 to the other side. If the rotary connection pipe 300C is in the first use position, the air intake opening 321 is opposite one end of the single opening. When the rotary connection pipe 300C is in the second position of use, the air intake opening 321 is opposite the other end of the single opening. In addition, only two positions of use of the rotary joint pipe 300C are explained in the above description. However, the positions are not limited to these two; In other exemplary embodiments, the rotary connection tube 300C can also have three or more positions of use (e.g. also a position of use with an air intake opening 321 directed upwards).

Furthermore, in the above-mentioned embodiment, with the swivel tube 300C rotating in relation to the gun housing 100, the nozzle jacket 200 is rigidly attached to the gun housing 100, and the swivel tube 300C rotates relative to the gun housing 100 Nozzle jacket 200. But it is not limited to this shape, in other exemplary embodiments in which the rotary connection tube 300C rotates in relation to the gun housing 100, the nozzle jacket 200 can also rotate relative to the gun housing 100, the rotary connection tube 300C being rigid on the nozzle jacket 200 is attached.

The construction of the nozzle casing 200 mentioned is only explained as an example and is not restricted to this form. Please look at those Figures 16 and 17th . Figure 16 Figure 3 is a three-dimensional view of a detail of how the nozzle jacket is attached to the gun body, as shown in the second embodiment of this invention. Figure 17 is a detailed representation of the nozzle casing from Figure 16 .

The nozzle casing 200a from this exemplary embodiment comprises a mounting sleeve 210a, a joint sleeve 220a, a flow disturbance sleeve 230a and a deflection sleeve 240a. The mounting sleeve 210a envelops the liquid nozzle 130, the end being attached to the gun body 110 of the gun housing 100. The articulated sleeve 220a envelops the fluid nozzle 130 and is also rotatable at the opposite end of the assembled sleeve 210a. In this exemplary embodiment, since the outer surface of the mounting sleeve 210a is constructed as an annular conical surface, the joint sleeve 220a and the mounting sleeve 210a can be rotated with respect to one another. The diameter of the annular conical surface is smaller the further it is away from the gun body. When the joint sleeve 220a moves close in the direction of the mounting sleeve and presses on the annular conical surface, then the joint sleeve 220a is attached to the mounting sleeve 210a. When the hinge sleeve 220a moves in the direction away from of the mounting sleeve 210a moves and thereby leaves the annular conical surface, then the joint sleeve 220a can rotate along the arrow c relative to the mounting sleeve 210a.

The flow disturbance sleeve 230a comprises an outer ring 231a and an inner ring 232a, which are connected to one another. The outer ring 231a surrounds the inner ring 232a and is attached to the end of the joint sleeve 220a which faces away from the assembly sleeve. But this is not limited to this shape, in other embodiments, the outer ring 231a and the joint sleeve 220a may be fixed to each other by gluing, or the outer ring 231a and the joint sleeve 220a may be directly shaped and constructed as one body.

The deflection sleeve 240a is detachably attached to the end of the nozzle casing 230a which faces away from the joint sleeve 220a. It should be noted that the deflection sleeve 240a and the nozzle casing 230a can also be shaped and constructed as one body.

One end of the rotary connection tube 300a has an air intake opening 310a, the other end of the rotary connection tube 300a is connected to the joint sleeve 220a, so that the rotary joint pipe 300a can rotate through the joint sleeve 220a along the direction shown by arrow c in relation to the gun housing. Therefore, in this exemplary embodiment as well, by means of the rotatable connection tube 300a which can be rotated in relation, the rotation connection tube 300a can be rotated to the position preferred by the user in order to install the outer connection hose. This makes it more convenient to mount the outer connecting hose on the pneumatic cleaning gun.

It should be noted that, in this exemplary embodiment, the inner ring 232a of the deflection sleeve 230a is rigidly fastened in the interior of the outer ring 231a. However, this is not restricted to this form, but rather in other exemplary embodiments the inner ring 232a of the deflection sleeve 230a can also be attached in a rotatable manner in the interior of the outer ring 231a.

In the pneumatic cleaning gun according to the above-mentioned embodiment, the rotary connecting tube 300a can be rotated to the position preferred by the user by the relatively rotatable rotary connecting tube in order to install the outer connecting hose. This makes mating the outer connector hose with the rotatable pneumatic spray cleaning gun more convenient.

Although the present invention discloses the above embodiment as being relatively good, the invention is not limited to this example. Anyone familiar with a similar technique can make some necessary changes and adjustments without departing from the spirit and scope of this invention.

REFERENCE LIST

10

pneumatic cleaning gun

20th

Compressed air line

30th

Air intake hose

100

Gun body

110

Gun body

120

Grab handle

130

Liquid nozzle

140

Liquid container

150

Air duct

160

Fluid hose

161

Liquid inlet

162

Liquid outlet

200

Nozzle casing

200a

Nozzle casing

210

Assembly sleeve

210a

Assembly sleeve

210C

Main body

211

inner mounting ring

211C

inner surface

212

outer mounting ring

212C

outer surface

212A

outer surface

212B

first positioning construction

213

Hollowing out

220

ummanieiungsnuise

220a

Joint sleeve

220C

Attachment ring

221

inside

221A

jacketed flow channel

222

second positioning construction

223

Snap-in groove

230

Sheath cavity

230a

Flow disturbance sleeve

231a

Outer ring

232a

Inner ring

240

first opening

240a

Deflection sleeve

250

second opening

260

annular slide channel

300

Air intake pipe

300a

Swivel joint pipe

300C

Swivel joint pipe

310

Air intake opening

310a

Luttansaugottnung

310C

Connector ring

320

Branch pipe

321

Air intake opening

400

Flow disturbance ring

400C

Fixing piece

410

ring

420

Flow baffle plates

500

Deflection ring

610

first positioning device

620a

second positioning devices

620b

second positioning devices

Claims (15)

1. A pneumatic cleaning gun comprising the following:

   - a gun housing (100) comprising a gun body (110) and a liquid nozzle (130), the liquid nozzle (130) being connected to the gun body (110);

   - a nozzle jacket (200) comprising a mounting sleeve (210) and a jacket sleeve (220), the mounting sleeve (210) being mounted on the gun body (110) of the gun housing (100) and the jacket sleeve (220) being rotatably mounted on the mounting sleeve (210) and surrounding the jacketed flow channel (221A), the liquid nozzle (130) being present in the interior of the jacketed flow channel (221A) of the jacket sleeve (220); and

   - an air intake tube (300) rigidly connected to the jacket sleeve (220), the air intake tube (300) having an air intake opening (310) and the air intake opening (310) leading into the jacketed flow channel (221A),

   characterized in that the mounting sleeve (210) has a plurality of first positioning constructs (212B); wherein the jacket sleeve (220) has at least one second positioning construct (222),
   wherein the jacket sleeve (220) is rotatable relative to the mounting sleeve (210); wherein each second positioning construct (222) can selectably be engaged in one of the first positioning constructs (212B), so that the air intake tube (300) has a plurality of usage settings.
2. The pneumatic cleaning gun according to claim 1, characterized in that the first positioning constructs (212B) are present on the exterior side (212A) of the mounting sleeve (210) and the second positioning constructs (222) are present on the interior side (221) of the jacket sleeve (220).
3. The pneumatic cleaning gun according to any one of the preceding claims,
   characterized in that each of the first positioning constructs (212B) implements a raised rib and each second positioning construct (222) implements a concave groove, wherein the height of each raised rib (212B) preferably gradually decreases from the side facing toward the gun body (110) to the side facing away from the gun body (110).
4. The pneumatic cleaning gun according to any one of the preceding claims,
   characterized in that said gun further comprises a flow disrupting ring (400) mounted on the jacket sleeve (220) and is present in the jacketed flow channel (221A), wherein the flow disrupting ring (400) preferably comprises a ring (410) and a plurality of flow disrupting plates (420), the ring (410) and the jacket sleeve (220) are separate from each other, and the flow disrupting plates (420) extend past the ring (410) and are present between the ring (410) and the jacket sleeve (220).
5. The pneumatic cleaning gun according to claim 4, characterized in that the interior side (221) of the jacket sleeve (220) has a plurality of engaging grooves (223) and the flow disrupting plates (420) each engage in said engaging grooves (223), and/or that the cleaning gun further comprises a deflecting ring (500) separably mounted on the end of the jacket sleeve (220) facing away from the mounting sleeve (210).
6. A pneumatic cleaning gun comprising the following:

   - a gun housing (100) comprising a gun body (110), a handle (120), and a liquid nozzle (130), the handle (120) and the liquid nozzle (130) each being connected to one of the opposite sides of the gun body (110);

   - a nozzle jacket (200, 200a) mounted on the gun body (110) of the gun housing (100), the nozzle jacket (200, 200a) surrounding a jacket cavity (230) and the liquid nozzle (130) being present in the interior of the jacket cavity (230) of the nozzle jacket (200, 200a),

   - a rotating connection tube (300C, 300a) connected to the nozzle jacket (200, 200a), the rotating connection tube (300C, 300a) having an air intake opening (321, 310a) and the air intake opening (321, 310a) leading into the jacket cavity (230), the rotating connection tube (300C, 300a) being rotatable relative to the gun housing (100) and having at least one first usage setting and one second usage setting,

   characterized in that the rotating connection tube (300C) comprises a plug connection ring (310C) and a branch tube (320), wherein the plug connection ring (310C) can be pulled over the nozzle jacket (200) in a rotating manner, the branch tube (320) is connected to the plug connection ring (310C), and the air intake opening (321) is present at the end of the branch tube (320) facing away from the plug connection ring (31 OC).
7. The pneumatic cleaning gun according to claim 6, characterized in that the nozzle jacket (200) has an opening at one side of the jacket cavity (230); wherein the air intake opening (321) of the branch tube (320) leads through said opening into the jacket cavity (230); wherein the air intake opening (321) corresponds to the one end of the opening when the rotating connection tube (300C) is in the first usage setting; wherein the air intake opening (321) corresponds to the other end of the opening when the rotating connection tube (300C) is in the second usage setting.
8. The pneumatic cleaning gun according to claim 6, characterized in that the nozzle jacket (200) has a first opening (240) and a second opening (250) at the two opposite sides of the jacket cavity (230), wherein the air intake opening (321) of the branch tube (320) leads through the first opening (240) or through the second opening (250) into the jacket cavity (230); wherein the air intake opening (321) corresponds to the first opening (240) when the rotating connection tube (300C) is in the first usage setting; wherein the air intake opening (321) communicates with the second opening (250) when the rotating connection tube (300C) is in the second usage setting.
9. The pneumatic cleaning gun according to any one of the claims 6 or 7, characterized in that the nozzle jacket (200) comprises a main body (210C) and a top ring (220C); wherein the main body (210C) has an inner surface (211C) and an outer surface (212C) opposite each other; wherein the inner surface (211C) surrounds the jacket cavity (230); wherein the one end of the main body (210C) has an inwardly recessed cavity (213) of the outer surface (212C), wherein the top ring (220C) is pulled over the cavity (213) of the main body (21 OC) and the main body (210C) together with the top ring (220C) forms an annular sliding groove (260); wherein the top ring (220C) is present and slideable in the annular sliding groove (260).
10. The pneumatic cleaning gun according to claim 9, characterized by a first positioning device (610) and two second positioning devices (620a, 620b) each adapted to the other, wherein the first positioning device (610) is present on the plug connection ring (310C), wherein the two second positioning devices (620a, 620b) are each present on the cavity (213) of the main body (210C), wherein the first positioning device (610) shifts to one of the two second positioning devices (620a, 620b) when the rotating connection tube (300C) is in the first usage setting, wherein the first positioning device (610) shifts to the other of the two second positioning devices (620a, 620b) when the rotating connection tube (300C) is in the second usage setting.
11. A pneumatic cleaning gun comprising the following:

    - a gun housing (100) comprising a gun body (110), a handle (120), and a liquid nozzle (130), the handle (120) and the liquid nozzle (130) each being connected to one of the opposite sides of the gun body (110); a nozzle jacket (200, 200a) mounted on the gun body (110) of the gun housing (100), the nozzle jacket (200, 200a) surrounding a jacket cavity (230) and the liquid nozzle (130) being present in the interior of the jacket cavity (230) of the nozzle jacket (200, 200a);

    - a rotating connection tube (300C, 300a) connected to the nozzle jacket (200, 200a), the rotating connection tube (300C, 300a) having an air intake opening (321, 310a) and the air intake opening (321, 310a) leading into the jacket cavity (230), the rotating connection tube (300C, 300a) being rotatable relative to the gun housing (100) and having at least one first usage setting and one second usage setting, characterized in that the nozzle jacket (200a) comprises a mounting sleeve (210a) and a joint sleeve (220a), wherein the mounting sleeve (210a) surrounds the liquid nozzle (130) and one of the ends thereof is mounted on the gun body (110) of the gun housing (100), wherein the joint sleeve (220a) surrounds the liquid nozzle (130) and is mounted in a rotatable manner on one end of the mounting sleeve (210a), wherein the rotating connection tube (300a) is connected to the joint sleeve (220a) so that the rotating connection tube (300a) can rotate relative to the gun housing (100), wherein the outer shape of the rotating connection tube (300C) preferably implements a "Y".
12. The pneumatic cleaning gun according to claim 11, characterized in that the nozzle jacket (200a) further comprises a flow disrupting sleeve (230a) comprising an outer ring (231a) and an inner ring (232a) connected to each other, wherein the outer ring (231a) surrounds the inner ring (232a) and is mounted on the end of the joint sleeve (220a) facing away from the mounting sleeve (210a), wherein the inner ring (232a) surrounds the liquid nozzle (130).
13. The pneumatic cleaning gun according to claim 12, characterized in that the outer ring (231a) is threaded on the end of the joint sleeve (220a) facing away from the mounting sleeve (210a), and/or that the nozzle jacket (200a) further comprises a joint sleeve detachably mounted on the end of the nozzle jacket (200a) facing away from the joint sleeve (220a).
14. The pneumatic cleaning gun according to any one of the claims 6 through 13, characterized in that the gun housing (100) has an air channel (150) and a liquid hose (160), wherein the air channel (150) extends from the handle (120) to the liquid nozzle (130), wherein the liquid hose (160) has a liquid inlet (161) and a liquid outlet (162), wherein the liquid inlet (161) is present outside of the air channel (150), wherein the liquid outlet (162) is present within the air channel (150) and extends from the gun body (110) to the liquid nozzle (130).
15. The pneumatic cleaning gun according to any one of the claims 6 through 14, characterized in that the gun housing (100) further comprises a liquid container (140) connected to the gun body (110) and that the liquid inlet (161) of the liquid hose (160) is present in the interior of the liquid container (140).

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