阅读说明：本技术 通过喷涂和抽吸进行除垢的工具 (Tool for descaling by spraying and suction ) 是由 G·埃沙雷奥 于 2020-02-21 设计创作，主要内容包括：一种除垢工具(100),用于对元件(52)的表面(50)进行除垢,所述除垢工具(100)包括：－供应导管(104),其界定供应通道(105),其设计成与载有磨料制品粉末的压缩空气源气动连通；－移除导管(106),其界定移除通道(107),其设计成与抽吸源气动连通；以及－喷嘴(108),其具有与外部连通并设计成面向表面(50)的开口(110),其中,该喷嘴(108)与供应通道(105)和移除通道(107)气动连通。因此,这种工具允许空气流通过,以用于喷射磨料,并允许抽吸磨料和由磨蚀产生的粉末。(A descaling tool (100) for descaling a surface (50) of an element (52), the descaling tool (100) comprising: -a supply duct (104) defining a supply channel (105) designed to be in pneumatic communication with a source of compressed air loaded with abrasive product powder; -a removal duct (106) defining a removal channel (107) designed to be in pneumatic communication with a suction source; and-a nozzle (108) having an opening (110) communicating with the outside and designed to face the surface (50), wherein the nozzle (108) is in pneumatic communication with the supply channel (105) and the removal channel (107). Thus, such tools allow the passage of an air flow for ejecting the abrasive and the suction of the abrasive and of the powder resulting from the abrasion.)

1. A descaling tool (100, 400) designed for descaling a surface (50) of an element (52), the descaling tool (100, 400) comprising:

-a supply duct (104) defining a supply channel (105) designed to be in pneumatic communication with a source of compressed air loaded with abrasive product powder;

-a removal duct (106) defining a removal channel (107) designed to be in pneumatic communication with a suction source (306); and

-a nozzle (108) having an opening (110) communicating with the outside and designed to face said surface (50), wherein said nozzle (108) is in pneumatic communication with said supply channel (105) and said removal channel (107);

wherein the supply conduit (104) is an inner conduit and the removal conduit (106) is an outer conduit in which the inner conduit is housed;

wherein the descaling tool (100, 400) comprises a guide (112) spanning the opening (110) and fixed to the supply conduit (104).

2. A descaling tool (200) designed for descaling a surface (50) of an element (52), said descaling tool (200) comprising:

-a supply duct (204) defining a supply channel (205) designed to be in pneumatic communication with a source of compressed air loaded with abrasive article powder;

-a removal duct (206) defining a removal channel (207) designed to be in pneumatic communication with a suction source (306); and

-a nozzle (208) having an opening (210) communicating with the outside and designed to face said surface (50), wherein said nozzle (208) is in pneumatic communication with said supply channel (205) and said removal channel (207);

wherein the removal conduit (206) is an inner conduit and the supply conduit (204) is an outer conduit in which the inner conduit is housed;

wherein the descaling tool (200) comprises a guide (212) spanning the opening (210) and fixed to the removal conduit (206).

3. The descaling tool (100, 200, 400) according to claim 1 or 2, characterized in that the descaling tool comprises a seal (114, 214) fixed around the opening (110, 210).

4. The descaling tool (100, 400) according to claim 1, wherein the opening (110) is formed at an end of the removal conduit (106).

5. The descaling tool (400) according to claim 1, wherein the supply conduit (104) comprises a proximal portion (104a) and a distal portion (104b), the proximal portion (104a) being fixed and in pneumatic communication with the compressed air source, the distal portion (104b) being mounted to be rotatably movable at an end of the proximal portion (104a) and open in the nozzle (108), an end of the distal portion (104b) open in the nozzle (108) being closed by a plug pierced by a perforation (412) therethrough, and the descaling tool (400) comprising means for rotating the distal portion (104 b).

6. The descaling tool (400) according to claim 5, wherein the means for rotating comprises an air duct (404) and fins (408), the air duct (404) defining an air channel (406) in pneumatic communication with the compressed air source (302), the distal portion (104b) carrying a set of fins (408) arranged in the air channel (406) such that an air flow (410) circulating in the air channel (406) interacts with the fins (408) causing the distal portion (104b) to turn, and the air duct (404) opening in the removal duct (106) downstream of the fins (408).

7. The descaling tool (200) according to claim 2, wherein the opening (210) is formed at an end of the supply conduit (204).

8. The descaling tool (100) according to claim 1 or 2, wherein the guide (112, 212) is removable.

9. A descaling system (300), comprising:

-a source of compressed air (302);

-a reservoir (304) containing abrasive product powder;

-a suction source (306);

-the descaling tool (100, 200) according to claim 1 or 2;

-a supply pipe (310) extending between the compressed air source (302) and the supply channel (105, 205) across the reservoir (304), wherein the supply pipe (310) comprises a dosing system (312), the dosing system (312) making it possible to extract powder from the reservoir (304) and inject it into the air flow in the supply pipe (310); and

-a removal tube (313) extending between the removal channel (107, 207) and the suction source (306).

Technical Field

The present invention relates to a descaling tool which makes it possible to descale a surface by spraying and suction, and a descaling system using such a descaling tool.

Background

In order to achieve contact between two mutually conductive metal parts and thus ensure good electrical conductivity, it is known to descale the two metal parts to expose the metal surfaces.

Several schemes are used to achieve this descaling. An abrasive member, such as sandpaper, may be used. Tools such as a metal milling cutter or a laser may also be used.

None of these methods are entirely satisfactory because they degrade the metal surface or require expensive and cumbersome tools.

Disclosure of Invention

The object of the invention is to propose a descaling tool which makes it possible to descale a surface by spraying and suction to suck in dust and abrasive.

To this end, a descaling tool is proposed, which is designed as a surface of a descaling element, comprising:

-a supply conduit defining a supply channel designed to be in pneumatic communication with a source of compressed air laden with abrasive article powder;

-a removal duct defining a removal channel designed to be in pneumatic communication with a suction source; and

-a nozzle having an opening communicating with the outside and designed to face the surface, wherein the nozzle is in pneumatic communication with the supply channel and the removal channel;

wherein the supply conduit is an inner conduit and the removal conduit is an outer conduit in which the inner conduit is received;

wherein the descaling tool comprises a guide spanning the opening and fixed to the supply conduit.

The invention also proposes a descaling tool designed for descaling a surface of an element, said descaling tool comprising:

-a supply conduit defining a supply channel designed to be in pneumatic communication with a source of compressed air laden with abrasive article powder;

-a removal duct defining a removal channel designed to be in pneumatic communication with a suction source; and

-a nozzle having an opening communicating with the outside and designed to face the surface, wherein the nozzle is in pneumatic communication with the supply channel and the removal channel;

wherein the removal conduit is an inner conduit and the supply conduit is an outer conduit in which the inner conduit is accommodated;

wherein the descaling tool comprises a guide spanning the opening and fixed to the removal conduit.

Thus, such tools allow an air flow to pass through for ejecting the abrasive and for sucking the abrasive and the dust resulting from the abrasion.

Advantageously, the descaling tool comprises a seal secured around the opening.

Advantageously, the opening is formed at the end of the removal duct.

Advantageously, the supply duct comprises a proximal portion, which is fixed and in pneumatic communication with a compressed air source, and a distal portion, which is mounted to move rotatably at the end of the proximal portion and opens in the nozzle, the end of the distal portion that opens in the nozzle being closed by a plug pierced by a perforation therethrough, and the descaling tool comprises means for rotating the distal portion.

Advantageously, the means for rotating comprise an air duct defining an air passage in pneumatic communication with a source of compressed air, the distal portion carrying a set of fins arranged in the air passage in such a way that the air flow circulating in said air passage interacts with the fins, causing the distal portion to turn, and a fin in the removal duct downstream of the fins in which the air duct opens.

Advantageously, the opening is formed at the end of the supply conduit.

Advantageously, the guide is removable.

The invention also provides a descaling system, comprising:

-a source of compressed air;

-a reservoir containing abrasive article powder;

-a suction source;

-a descaling tool according to one of the preceding variants;

-a supply tube extending between a source of compressed air and a supply passage across the reservoir, wherein the supply tube comprises a dosing system which makes it possible to extract powder from the reservoir and inject it into the air flow in the supply tube; and

a removal tube extending between the removal channel and the suction source.

Drawings

The above and other features of the present invention will become more apparent upon reading the following description of exemplary embodiments, which is given in conjunction with the accompanying drawings, in which:

FIG. 1 is a side cross-sectional view of a descaling tool according to a first embodiment of the invention;

FIG. 2 is a side cross-sectional view of a descaling tool according to a second embodiment of the present invention;

FIG. 3 is a schematic view of a descaling system according to the present invention; and

fig. 4 is a cross-sectional view of a descaling tool according to a specific embodiment of the first embodiment.

Detailed Description

Fig. 1 shows a descaling tool 100 according to a first embodiment of the invention, and fig. 2 shows a descaling tool 200 according to a second embodiment of the invention.

The descaling tool 100, 200 is used to descale the surface 50 of the element 52, such as removing paint or rust from a metal element. The area 54 is the area to be descaled and removed at the end of descaling.

The descaling tool 100, 200 comprises a body 102, 202, the body 102, 202 comprising a supply conduit 104, 204 and a removal conduit 106, 206. The supply duct 104, 204 defines a supply channel 105, 205 and the removal duct 106, 206 defines a removal channel 107, 207.

In the embodiment of fig. 1, the supply conduit 104 is an inner conduit and the removal conduit 106 is an outer conduit in which the inner conduit is received, i.e. the outer conduit surrounds the inner conduit.

In the embodiment of fig. 2, the removal conduit 206 is an inner conduit and the supply conduit 204 is an outer conduit in which the inner conduit is housed, i.e. the outer conduit surrounds the inner conduit.

As described below, the supply channels 105, 205 are designed to pneumatically communicate with a source of compressed air carrying abrasive article powder, and the removal channels 107, 207 are designed to pneumatically communicate with a source of suction.

FIG. 3 illustrates a descaling system 300 using the descaling tool 100 of FIG. 1. FIG. 3 is described with reference to descaling tool 100 of FIG. 1, but it may also be utilized in the same manner with descaling tool 200 of FIG. 2, with the positions of supply conduits 104, 204 and removal conduits 106, 206 reversed.

The descaling system 300 includes a compressed air source 302, such as a compressor.

The descaling system 300 also includes a reservoir 304, the reservoir 304 containing an abrasive product powder such as sodium bicarbonate, aluminum silicate, calcite, and the like.

The descaling system 300 also includes a suction source 306, which suction source 306 sucks in abraded air and dust.

According to another embodiment, the suction source 306 is in pneumatic communication with the reservoir 304 so that the stripped coating material is returned to the reservoir 304 and thus forms the powder component of the abrasive article.

The descaling system 300 further comprises a pipe loop 308 with a supply pipe 310 and a removal pipe 313.

A feed tube 310 extends between the compressed air source 302 and the supply channel 105, across the reservoir 304, and in the reservoir 304, the abrasive article powder is carried in the air. To this end, the supply pipe 310 is equipped with a loading system 312, which loading system 312 makes it possible to extract the powder from the reservoir 304 and inject it into the air flow of the supply pipe 310, such as a venturi effect system or any other pressurized or overpressure system.

A removal tube 313 extends between the removal channel 107 and the suction source 306.

The descaling tool 100, 200 comprises a nozzle 108, 208 having an opening 110, 210, the opening 110, 210 being in communication with the outside and facing the surface 50 to be descaled.

The nozzles 108, 208 are in pneumatic communication with the supply channels 105, 205 and the removal channels 107, 207. Thus, the compressed air laden with abrasive article powder circulates in the supply channel 105, 205 up to the nozzle 108, 208, where it is expelled through the opening 110, 210 and comes into contact with the surface 50 to be descaled, and then draws the air laden with abrasive article powder and dirt created by the descaling towards the nozzle 108, 208 and subsequently into the removal channel 107, 207 towards the suction source 306.

The openings 110, 210 define a descaling diameter, but this descaling diameter can be varied by fixing the crown along the outer edges of the openings 110, 210, thereby varying its diameter.

In fig. 1, arrows 150a, 150b show the direction of the compressed air in the supply conduit 104 and the nozzle 108, and arrow 152 shows the direction of the compressed air in the removal conduit 106.

In fig. 2, arrows 250a, 250b show the direction of the compressed air in the supply conduit 204 and the nozzle 208, and arrow 252 shows the direction of the compressed air in the removal conduit 206.

In the embodiment of fig. 1, the opening 110 is formed at the end of the removal conduit 106, which forms a bearing surface for bearing against the abutment surface 50. In the embodiment of fig. 2, the opening 210 is formed at the end of the supply conduit 204 that forms a bearing surface against the surface 50.

When the area 54 to be descaled surrounds the hole 56 of the element 52, the descaling tool 100, 200 comprises a guide 112, 212, which guide 112, 212 passes through the opening 110, 210 and into the hole 56 to ensure accurate positioning of the descaling tool 100, 200 relative to the hole 56. In the embodiment of fig. 1 and 2, the guides 112, 212 are in the form of studs.

In the embodiment of fig. 1, the guide 112 is fixed to the end of the supply conduit 104.

In the embodiment of fig. 2, the guide 212 is fixed to the end of the removal catheter 206.

In the embodiment of fig. 1 and 2, the guide 112, 212 is fixed, but it may also be provided to be removable to enable the descaling tool 100, 200 to be adapted to holes 56 of different diameters.

In order to ensure a satisfactory seal between the descaling tool 100, 200 and the surface 50, the descaling tool 100, 200 comprises a seal 114, 214, the seal 114, 214 being fixed around the opening 110, 210 and bearing against the surface 50, i.e. the end of the removal conduit 106 in the case of the embodiment of fig. 1, and the end of the supply conduit 204 in the case of the embodiment of fig. 2.

In the embodiment of the invention presented in the figures, the supply duct 104, 204 and the removal duct 106, 206 are concentric and perpendicular to the surface 50, but another arrangement may also be provided. For example, two conduits may be arranged obliquely with respect to the surface 50, and each conduit is arranged on a respective side of a plane perpendicular to the surface.

In the embodiment of fig. 1 and 2, the supply conduits 104 are stationary, but it may also be provided that some of the supply conduits 104 are driven in a rotational or oscillating motion. The descaling tool then comprises means for rotating the movable part of the supply duct 104, which may be an electric motor or a system based on compressed air originating from the compressed air source 302 or from the removal duct 313, to impart a circular motion to the abrasive article powder.

Fig. 4 shows a cross-sectional view of a descaling tool 400 constituting a variant of the first embodiment of the invention, the supply catheter 104 of which comprises a proximal portion 104a and a distal portion 104 b. The proximal portion 104a is fixed and in pneumatic communication with a source of compressed air carrying abrasive article powder. The distal portion 104b is mounted for rotational movement about the longitudinal axis X at the end of the proximal portion 104 a. The distal portion 104b thus extends between the proximal portion 104a and a nozzle 108 opening therein.

The end of the distal portion 104b that is open in the nozzle 108 is closed by a plug, and the distal portion 104b is open in the nozzle 108 via a perforation 412 through the plug, which results in an increase in the outlet pressure.

To this end, the distal portion 104b is mounted for rotational movement within the removal guide tube 106 by means of at least one, here two, ball bearings 402, the ball bearings 402 being mounted between the distal portion 104b and a lower portion of the removal guide tube 106.

The means for rotating the distal portion 104b includes an air conduit 404 and fins 408.

The air conduit 404 defines an air passage 406 in pneumatic communication with the compressed air source 302.

The distal portion 104b carries a set of fins 408 arranged in the air channel 406 about the longitudinal axis X such that an air flow 410 circulating in said air channel 406 interacts with the fins 408, causing the distal portion 104b to rotate.

Downstream of the fins 408, the air duct 404 opens in the removal duct 106 so that, after the fins 408 are turned, the air flow circulating in the air passage 406 joins the removal passage 107 to be discharged.

The perforations 412 may be located on only a portion of the plug, particularly along a radius, as long as the plug rotates with the distal portion 104 b.