CN110856852A - Method for cleaning a component, in particular a medium-guiding component - Google Patents
Method for cleaning a component, in particular a medium-guiding component Download PDFInfo
- Publication number
- CN110856852A CN110856852A CN201910741787.XA CN201910741787A CN110856852A CN 110856852 A CN110856852 A CN 110856852A CN 201910741787 A CN201910741787 A CN 201910741787A CN 110856852 A CN110856852 A CN 110856852A
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- China
- Prior art keywords
- component
- compressed air
- outlet
- opening
- valve unit
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2205/00—Details of machines or methods for cleaning by the use of gas or air flow
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a method and a device for cleaning a component (16), in particular a medium-conducting component, having an inlet opening (18) and an outlet opening (20) which is fluidically connected to the inlet opening (18), characterized in that the method comprises the following steps: -connecting the inlet (18) to a source of compressed air (26), -repeatedly opening the outlet (20) and subsequently closing the outlet (20) so as to build up pressure in the component (16) by closing the outlet (20) and to reduce the pressure in the component (16) by opening the outlet (20), whereby particles present in the component (16) are separated and discharged with the compressed air.
Description
Technical Field
The invention relates to a method for cleaning a component, in particular a medium-conducting component, having an inlet opening and an outlet opening which is fluidically connected to the inlet opening, and to a device for cleaning said component.
Background
The finished part needs to be cleaned. Components for applications in the automotive field must also meet high cleanliness requirements. These components are, in particular, medium-conducting components, such as tubes, pipes, channels, containers, fuel tanks, etc. Particularly in the case of a component in which a plurality of parts are combined, for example, a component in which the parts are joined to each other by welding, it is necessary to appropriately clean the parts. Whereas components made of synthetic materials are just prone to electrostatic attraction of the particles.
It is known from the prior art to flush or flush the component to be cleaned with a fluid in order to remove undesired particles. It has been demonstrated here that the particles are usually not completely discharged.
Disclosure of Invention
It is therefore an object of the present invention to provide a method and a device for cleaning components, with which the components can be cleaned better.
The object is solved by a method for cleaning a component, wherein the method is characterized by the steps of claim 1. In particular, the method comprises the steps of:
the input port is connected to a source of compressed air,
the opening and subsequent closing of the outlet opening is repeated, so that pressure builds up in the component by closing the outlet opening and drops in the component by opening the outlet opening, whereby the particles present in the component are separated and discharged with the compressed air.
By this method the component can be cleaned better. The opening and closing of the outlet opening, in particular cyclically, causes a turbulent air flow in the component and a pressure pulse which is carried out in succession, which finally causes a vibration effect, so that solid particles adhering to the component are separated.
With the method according to the invention, particle sizes of up to 600 μm can be removed particularly reliably. The method according to the invention is carried out in particular at room temperature.
It has proven advantageous if the closing of the outlet opening is effected at a frequency in the range from 0.5Hz to 15 Hz. This advantageously enables a sufficient pressure to be built up and a subsequent pressure reduction to be carried out in order to generate a pressure pulse in the component. To improve the cleaning effect, it is also possible to perform at higher temperatures, for example in the range from 25 to 150 °, and preferably in the range from 50 to 80 °.
It is also advantageous that the compressed air source provides clean air and in particular ionized air. An advantage of using an ionized air flow component is that the charge is eliminated at the surface of the component due to the conductive ability of the ionized air, thereby reducing the electrostatic adsorption energy. As a result, particles, in particular smaller in mass, can be discharged better.
The compressed air source is advantageously designed to provide a pressure of 2 to 7 bar and/or a maximum of 2m3Volume flow/min.
As already mentioned, the method according to the invention is preferably used to clean components made of synthetic material, which are joined by means of friction welding, ultrasonic welding or hybrid welding.
It is also advantageous that the air flowing out of the outlet opening is clean. The outflowing air can be conducted, in particular, through an air filter or a centrifugal separator in order to be able to subsequently be cleaned of particles individually.
It is also advantageous to close the outlet opening and to check the tightness of the component before and/or after carrying out the method according to the invention. Here, the tightness can be checked by means of a pressure loss measurement. Thus, the pressure is measured in the component over a predetermined period of time. If the pressure drops over a predetermined period of time, the leak-tightness of the component can be inferred.
The invention can also provide that the inlet opening is initially charged with compressed air, wherein the outlet opening is simultaneously closed, and that the outlet opening is charged with compressed air subsequently in time, wherein the inlet opening is simultaneously closed. This makes it possible to remove particles present in the component efficiently. This alternating compressed air loading of the output and of the subsequent input can take place over a plurality of cycles and over a defined period of time.
The object indicated in the foregoing is also solved by a device for cleaning the component having the features of claim 8. It is therefore proposed, in particular, that the device is provided with the following units: a connecting unit for connecting the input port to a compressed air source, an output valve unit, wherein the output valve unit has an inlet and an outlet for connecting to the output port and can be switched at least into two switching positions, open and closed. Advantageously, a control unit is provided for controlling the outlet valve unit during operation of the device, said control unit being provided for controlling the outlet valve unit such that the outlet valve unit alternates between an open and a closed switching position a plurality of times, so that by closing the outlet valve unit a pressure is built up in the component and by opening the outlet valve unit a pressure is reduced in the component, whereby particles present in the component are separated by the pressure pulses generated in the component and are discharged with the compressed air.
Advantageously, the connecting unit is connected upstream of an inlet valve unit which can be controlled by the control unit, the inlet valve unit being switchable at least into the two open and closed switching positions. This device is therefore provided with two controllable valve units, one being an inlet valve unit and the other being an outlet valve unit. Preferably, the two valve units can be operated independently of each other via the control unit. By providing the inlet valve unit, the component can be acted upon with compressed air in a targeted manner, in particular when the component is provided for carrying out the method.
It is also advantageous if the connection unit is connected upstream of an ionizer for ionizing compressed air. The ionizer can be arranged between the inlet valve unit and the connection unit.
It is also advantageous if an outlet valve unit is connected downstream of the particle filter. Thereby, particles can be filtered out of the air before the air is let out into the atmosphere, for example. The particle filter can be designed in particular as a centrifugal separator.
It is also advantageous if the device has a cavity for receiving the component, wherein the cavity comprises a clamping device for positionally accurate arrangement of the component in the cavity. This ensures that the component can also be held reliably during cleaning.
It is also advantageous if the chamber has an interface for a compressed air source and an interface for the air flowing out of the chamber. This can improve process reliability. The chamber can be designed to be generally fluid-tight. In case a particle filter is provided, the particle filter can also be arranged outside the cavity.
The device according to the invention is preferably designed and arranged here for carrying out the method according to the invention.
Drawings
Further details and advantageous embodiments of the invention emerge from the following description, from which embodiments are described and illustrated in detail.
It shows that:
fig. 1 is a schematic illustration of an apparatus according to the invention, which in operation performs a method according to the invention.
Detailed Description
In fig. 1, a device 10 according to the invention is shown, comprising a cavity 12 in which a clamp device 14 for arranging a component 16 is arranged. The chamber 12 can be designed to be fluid-tight overall.
The compressed air source 26 may be an interface to a compressed air network, which typically provides a pressure of 2 to 7 bar and/or a maximum of 2m3Volume flow/min. A source of clean compressed air may also be provided, as desired.
Compressed air from a compressed air source 26 enters the chamber 12 through the port 24 via a conduit 30. The line 30 opens here at an inlet valve unit 32, which is designed, for example, as a solenoid valve. The inlet valve unit 32 can be controlled via a control unit 34. The input valve unit 32 has two switch positions, one closed and the other open. A conduit 36 is connected downstream of the inlet valve unit 32, which leads into an ionizer 38. In the ionizer 38, air from the air source 26 is ionized. Thereby, discharge of the surface of the component 16 can be achieved, thus reducing the electrostatic adsorption energy as a whole. In addition, the charged ions have a particle binding effect, and thus the separated particles as a whole are easily discharged.
A connection unit 40 is connected downstream of the ionizer 38, where the input port 18 of the component 16 is connected. Thus, air (indicated by arrows) from the ionizer 38 may flow into the component 16 via the connection unit 40 and the input port 18.
As can be seen in fig. 1, the ionizer 38 has a second outlet through which the ionized air is directed to a nozzle or diffuser 42. With the diffuser 42, the component 16 may be circulated with compressed air at its outer surface for cleaning the outer surface. In general, a plurality of nozzles or diffusers 42 (not shown) may be provided that ultimately allow the component 16 to be flowed through by compressed air on all sides.
The inner surface of the member 16 flows compressed air between the inlet and outlet ports 20 as indicated by arrows 44 in fig. 1.
Downstream of the outlet 20 is an outlet valve unit 46 which can likewise be opened and closed with two switching positions. The outlet valve unit 46 is controlled by the control unit 34.
As can be seen from fig. 1, the outlet of the outlet valve unit 46 is connected to a particle filter 50 by means of a line 48. The particle filter 50 can be designed, for example, as a centrifugal separator, which separates out particles entrained by the compressed air. The clean air leaving the particle filter 50 is fed via a duct 52 to an exhaust valve 54. The cleaned air eventually exits the device 10 through an exhaust valve 54 and is delivered to the atmosphere.
In order to carry out the method according to the invention, the inlet valve unit 32 is opened by operating the device 10, whereby the compressed air 26 flows into the component 16. During the opening of the input valve unit 32, the output valve unit 46 is controlled by the control unit 34 such that the output valve unit 46 is repeatedly opened and closed, thereby accumulating pressure in the component 16 and then dropping the pressure. This alternation causes pressure pulses to act on the inner wall of the member 16. In addition, a turbulent air flow is formed in the component 16. As a result of the cyclical pressure buildup and reduction in the component 16, a vibration effect is generally produced which separates particles present in the component 16 or on its inner wall.
Here, the closing of the outlet valve unit 46 takes place in particular at a frequency in the range from 0.5 to 15Hz, and preferably in the range from 2 to 7 Hz. After cleaning the component 16, the tightness of the component 16 can be checked. For this purpose, valve unit 46 is first closed in order to accumulate the operating pressure in component 16. In the latter step, the input valve unit 32 may be closed and the pressure change in the component 16 may be measured. For this purpose, a pressure sensor 56 can be provided in the component 16 or, as shown in fig. 1, in the connection unit 40, the output signal of which is fed to the control unit 34. Thus, a possible pressure loss and thus a leak tightness of the component 16 can be inferred via the pressure determined in this way over time.
In a further embodiment, which is not shown in the figures, it is provided that the outlet valve unit 46 is connected to the compressed air source 26, and that the control unit 34 is designed such that it controls the outlet valve unit 46 and the inlet valve unit 32 such that the inlet port is first acted upon with compressed air, wherein the outlet port is simultaneously closed, and that the outlet port is acted upon with compressed air subsequently in time, wherein the inlet port is simultaneously closed.
Thus, cleaning of the medium-guiding components can be advantageously achieved with the device 10. In addition, the tightness of the component 16 can be checked in a simple manner.
Claims (16)
1. A method for cleaning a component (16), in particular a medium-conducting component, having an inlet opening (18) and an outlet opening (20) which is fluidically connected to the inlet opening (18),
the method is characterized by the following steps:
connecting the inlet (18) to a source of compressed air (26),
-repeatedly opening the outlet opening (20) and subsequently closing the outlet opening (20) so that pressure is built up in the component (16) by closing the outlet opening (20) and so that pressure is reduced in the component (16) by opening the outlet opening (20), whereby particles present in the component (16) are separated and discharged with the compressed air.
2. Method according to claim 1, characterized in that the closing of the outlet opening (20) is effected at a frequency in the range of 0.5Hz to 15 Hz.
3. Method according to claim 1 or 2, characterized in that the compressed air source (26) provides clean air and in particular ionized air.
4. Method according to claim 1, 2 or 3, characterized in that the compressed air source (26) provides a pressure of 2 to 7 bar and/or a maximum of 2m3Volume flow/min.
5. Method according to any one of the preceding claims, characterized in that parts (16) made of synthetic material are cleaned with the method, which parts are joined by means of friction welding, ultrasonic welding or hybrid welding.
6. Method according to any of the preceding claims, characterized in that the air flowing out of the outlet opening (20) is clean.
7. Method according to any one of the preceding claims, characterized in that the outlet opening (20) is closed and the tightness of the component (16) is checked before and/or after the method is carried out.
8. Method according to any of the preceding claims, characterized in that the inlet port is first loaded with compressed air, wherein the outlet port is closed simultaneously, and that the outlet port is loaded with compressed air subsequently in time, wherein the inlet port is closed simultaneously.
9. A device (10) for cleaning a component (16), in particular a medium-conducting component, having an inlet opening (18) and an outlet opening (22) which is fluidically connected to the inlet opening,
the device is characterized in that the following units are provided:
a connection unit (40) for connecting the input port (18) to a source of compressed air (26);
an output valve unit (46), wherein the output valve unit (46) has an inlet and an outlet for connection to the output port and can be switched at least into two switching positions, open and closed; and
a control unit (34) for controlling the outlet valve unit (46), which control unit is provided for controlling the outlet valve unit (46) during operation of the device (10) in such a way that it alternates several times between an open and a closed switching position, so that the pressure is built up in the component by closing the outlet valve unit and the pressure is reduced in the component (16) by opening the outlet valve unit, whereby particles present in the component are separated and discharged with the compressed air.
10. Device (10) according to claim 8, characterized in that the connection unit (40) is connected upstream of an input valve unit (32) controllable by the control unit (34), which can be switched at least into the two switching positions, open and closed.
11. The device (10) according to claim 8 or 9, characterized in that the connection unit (40) is connected upstream of an ionizer (38) for ionizing compressed air.
12. Device (10) according to claim 8, 9 or 10, characterized in that the outlet valve unit (46) is connected downstream of a particle filter (50).
13. Device (10) according to any one of claims 8 to 11, characterized in that the device (10) has a cavity (12) with a clamp device (14) for arranging the component (16) in the cavity (12).
14. Device (10) according to claim 12, characterized in that the cavity (12) has an interface (24) for the compressed air source (26) and an interface (28) for the air flowing out of the cavity (12).
15. Device (10) according to one of claims 10 to 14, characterized in that the outlet valve unit (46) is connected to the compressed air source (26) and in that the control unit (34) is designed to control the outlet valve unit (46) and the inlet valve unit (32) such that the inlet opening is first charged with compressed air, wherein the outlet opening is closed simultaneously, and the outlet opening is charged with compressed air subsequently in time, wherein the inlet opening is closed simultaneously.
16. The apparatus (10) according to any one of claims 8 to 15, arranged for carrying out the method according to any one of claims 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018120693.3A DE102018120693B4 (en) | 2018-08-24 | 2018-08-24 | Process for cleaning media-carrying plastic components |
| DE102018120693.3 | 2018-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110856852A true CN110856852A (en) | 2020-03-03 |
Family
ID=69413173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910741787.XA Pending CN110856852A (en) | 2018-08-24 | 2019-08-12 | Method for cleaning a component, in particular a medium-guiding component |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110856852A (en) |
| DE (1) | DE102018120693B4 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080723A (en) * | 1992-06-01 | 1994-01-12 | 可口可乐公司 | The method and system of the existence of dirt in sampling and the definite container |
| US6090222A (en) * | 1998-11-16 | 2000-07-18 | Seh-America, Inc. | High pressure gas cleaning purge of a dry process vacuum pump |
| EP1882531A2 (en) * | 2006-07-27 | 2008-01-30 | Relstatic AG | Method and assembly for cleaning plastic ventilation units with ventilation ducts |
| CN101626844A (en) * | 2007-03-08 | 2010-01-13 | 可口可乐公司 | Pipe clearing systems |
| KR20150137682A (en) * | 2014-05-30 | 2015-12-09 | 정성혜 | The Device of Removing Scale Inside Pipe |
| CN106475365A (en) * | 2015-08-28 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of carbon dust pipe dredging device |
| CN206184872U (en) * | 2016-10-08 | 2017-05-24 | 安顺集团建设有限公司 | Gas pipeline purging device |
| CN107096771A (en) * | 2017-05-19 | 2017-08-29 | 沪东中华造船(集团)有限公司 | A kind of ship pipeline compressed air is purged automatically, inspection method |
-
2018
- 2018-08-24 DE DE102018120693.3A patent/DE102018120693B4/en active Active
-
2019
- 2019-08-12 CN CN201910741787.XA patent/CN110856852A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080723A (en) * | 1992-06-01 | 1994-01-12 | 可口可乐公司 | The method and system of the existence of dirt in sampling and the definite container |
| US6090222A (en) * | 1998-11-16 | 2000-07-18 | Seh-America, Inc. | High pressure gas cleaning purge of a dry process vacuum pump |
| EP1882531A2 (en) * | 2006-07-27 | 2008-01-30 | Relstatic AG | Method and assembly for cleaning plastic ventilation units with ventilation ducts |
| CN101626844A (en) * | 2007-03-08 | 2010-01-13 | 可口可乐公司 | Pipe clearing systems |
| KR20150137682A (en) * | 2014-05-30 | 2015-12-09 | 정성혜 | The Device of Removing Scale Inside Pipe |
| CN106475365A (en) * | 2015-08-28 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of carbon dust pipe dredging device |
| CN206184872U (en) * | 2016-10-08 | 2017-05-24 | 安顺集团建设有限公司 | Gas pipeline purging device |
| CN107096771A (en) * | 2017-05-19 | 2017-08-29 | 沪东中华造船(集团)有限公司 | A kind of ship pipeline compressed air is purged automatically, inspection method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018120693B4 (en) | 2024-05-23 |
| DE102018120693A1 (en) | 2020-02-27 |
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Application publication date: 20200303 |
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