CN116997708A - Automatic cleaning system constructed in two-stroke cross engine for sludge cleaning - Google Patents
Automatic cleaning system constructed in two-stroke cross engine for sludge cleaning Download PDFInfo
- Publication number
- CN116997708A CN116997708A CN202280021701.6A CN202280021701A CN116997708A CN 116997708 A CN116997708 A CN 116997708A CN 202280021701 A CN202280021701 A CN 202280021701A CN 116997708 A CN116997708 A CN 116997708A
- Authority
- CN
- China
- Prior art keywords
- screw conveyor
- engine
- sludge
- hollow
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 30
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 description 18
- 239000003921 oil Substances 0.000 description 16
- 238000010926 purge Methods 0.000 description 11
- 239000000758 substrate Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000009428 plumbing Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SKBXVAOMEVOTGJ-UHFFFAOYSA-N xi-Pinol Chemical compound CC1=CCC2C(C)(C)OC1C2 SKBXVAOMEVOTGJ-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
- F02B25/04—Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Incineration Of Waste (AREA)
- Screw Conveyors (AREA)
Abstract
The invention relates to an engine (1) with an automatic cleaning system having a rotary flexible screw conveyor (2) fixedly mounted in a hollow (3, 4) of the engine (1) such that the liquid in the hollow is conveyed along the outer diameter of the screw conveyor (2). The screw conveyor (2) is centreless and sludge and oil also flow in the centre (7) of the screw conveyor.
Description
Technical Field
The present invention relates to an automatic cleaning system with a rotating flexible screw conveyor, which can be used with two-stroke crosshead engines, and which is particularly suitable for installation in an engine flushing air belt (also referred to as a "purge air space" or "piston underside space"). The invention is also applicable to installation in an engine flushing air tank "purge air receiver". Furthermore, the system is suitable for installation in a pipe system diverted from the above-mentioned area.
The invention can be used for refitting the existing engine and equipment and can also be used for installing new engine and equipment. The invention can be used for both constant pressure and pressureless (open) systems.
Background
It is well known that in two-stroke cross-hair engines, "sludge" builds up layer by layer in the engine flushing air zone. The reason for this phenomenon is the composition of the medium. The medium is formed by mixing a lubricating oil for cylinder lubrication with solid particles (sludge) in the form of unburned particles. These solid or fouling liquid components tend to settle/precipitate and accumulate relatively quickly layer by layer on surfaces with little or no inclination, forming relatively large amounts of solid sludge during operation of the engine. This build-up material is almost consistent with hard trampled soil. This occurs because the flowing portion of the medium (oil) is running away and does not keep the solid/fouling liquid components in sufficient motion. For example, since the last wash, a significant amount of solid sludge has accumulated, which is unacceptable, for only 3 weeks of operation. Currently, this problem is primarily addressed by manual cleaning by scoops, creators, scrapers, and other known cleaning/excavating tools. However, this also results in relatively high man-hour consumption. In addition, the engine must be shut down for several hours when this manual work is performed.
In known examples, the man-hours for manual cleaning of purge air strips, purge air tanks and associated discharge plumbing each year exceeds 1200 hours. Moreover, this work is also a nuisance for the personnel concerned, since it is often carried out in awkward postures, and often involves the use of toxic and possibly harmful chemicals and/or diesel fuel. The long term impact of harmful components in sludge on related personnel is also of increasing concern. In the tedious manual excavation/cleaning process, it is often seen that the staff cannot avoid skin contact with the sludge. In these relatively confined spaces, very high temperatures are also often present. In addition to the fact that air contains different potentially harmful fumes, it is desirable to avoid manual excavation and cleaning altogether.
For the above-mentioned areas and associated ducts, cleaning is very important for the operation of the engine. Excessive sludge accumulation can cause serious operational and safety problems for engine operation.
Disclosure of Invention
The object of the present invention is to automatically prevent the accumulation of unacceptable solid/silted liquid sludge during continuous operation of the engine, by means of a suitable rotation of the flexible centreless screw conveyor.
The invention can make the two-stroke engine operate without faults, and greatly saves the working time of manual cleaning. In addition, the invention can also greatly save the cleaning agent and diesel oil consumed when the designated area of the engine is cleaned manually. In addition, the invention can help the engine operator save a great deal of consumption of cylinder lubricating oil.
The system of claim solves these problems by introducing an engine having an automatic cleaning system with a rotating flexible auger fixedly mounted within a hollow portion of the engine such that liquid within the hollow portion is conveyed along an outer diameter of the auger.
The screw conveyor may be centerless such that sludge and oil also flow within the center of the screw conveyor.
The screw conveyor may be flexible enough to extend straight or slightly curved to accommodate the hollow.
The auger may be positioned such that it is capable of scraping sludge from the engine towards the outlet opening.
In one embodiment, the augur is positioned within a hollow of the engine, which is a purge air space or a piston underside space.
The bottom of the hollow may be inclined towards the bottom of the screw conveyor so that both sludge and oil will slide or flow downwards towards the bottom of the screw conveyor.
In one embodiment, the auger is positioned within a hollow of the engine, which is a purge air receiver.
The screw conveyor may be held in place by a longitudinal guide plate.
A drive unit may be mounted at the end of the screw conveyor.
The augers may be positioned in an integrated conduit that discharges from the engine.
Rotary flexible augers or augers are known from flexible augers for transporting fodder and pellets, for example, in agriculture. In these applications, the screw conveyor is characterized by a relatively high rotational speed, and the main function of the screw conveyor is to convey (screw) dry feed or pellets through a pipe or tube.
Another feature of the rotary flexible auger is that it is flexible so that it can fit and run at any soft bend of any channel and/or duct.
In the case of an automatic cleaning system with a rotating flexible screw conveyor, the main function of the screw conveyor is to prevent solids (sludge) deposition. This is achieved at a relatively slow rotational speed, producing a scraping effect on the substrate.
The primary media transport is by means of a hollow diameter flowing through the screw conveyor and along the outer diameter of the screw conveyor.
Flow occurs under gravity due to inclination of the substrate or due to pressure differences between the inlet and outlet of the screw conveyor. There are also systems in which flow is generated by the combined action of gravity and pressure differential.
"substrate" refers to the cross-section of the profile in which the auger is located. Thus, the augers may be placed in a conduit and/or tube that is closed and possibly combined with an extended conduit that is fully/partially open. The augers may also be positioned in closed pipes and tubes.
Various rotary plumbing and exhaust cleaners are known. It features that the wire is pushed through the opening of pipe or pipeline like a cleaning belt. They are typically hand-held and require access to an opening in the tube, typically when the tube is fully or partially plugged, to perforate a possible plug. These devices are not used for fixed/permanent installation and for continuous preventive operation.
Prior publication GB468813a discloses an automatic cleaning system with a rotating flexible screw conveyor fixed in a pipe system. The system conveys solids by scraping against the bottom of the pipe while allowing liquid to flow through the hollow diameter of the screw conveyor and along the space existing between the outer diameter of the screw conveyor and the inner diameter of the pipe.
This publication describes an invention and a technique aimed at transporting ashes and slags downwards through a pipe which is constantly filled/submerged by accumulated water, which technique is mainly used for various combustion boilers, and is characterized by transporting/forcing solids downwards/under the surface and through accumulated water in the constantly transported pipe. The aim of this technique is to effectively extinguish the embers and flames in the ashes/slags before they are transported and stored.
This effect is contrary to what is achieved by the present invention, which is primarily aimed at continuously keeping the pipe or pipe substrate clear of undesired substances. For example, for large two-stroke engines this is of great importance, since clogging can lead to sudden leakage of oil, fuel or cooling water, and for safety reasons it is important that the leakage must be immediately led through cleaning and emptying the pipes and the drain pipes or pipes, so that it is necessary to keep cleaning and emptying constantly in preparation for the evacuation of abnormal leakage over time. The invention further differs from this technique in that it can be built in a two-stroke engine of the crosshead type, for example.
The rotational speed of the screw conveyor may be adjusted so that the relative cleanliness of the substrate/channel/pipe is maintained by preventing precipitation and formation of solid and/or fouling liquid material. The rotational speed of the screw conveyor may be adjusted to be slow to avoid unnecessary friction between the screw conveyor and the substrate. This avoids unnecessary wear and increases in the temperature of the rotating screw conveyor.
The rotational movement of the screw conveyor may be a constant rotational speed or a variable rotational speed. The invention can also be implemented by intermittent (start/stop) rotational movement.
Another feature of the invention is that a drive unit is mounted at the end of the screw conveyor. The scraping/cleaning movement of the screw conveyor may be performed in a direction of movement away from the drive unit or in a direction of movement towards the drive unit. The drive unit generates a rotational movement of the screw conveyor. The rotational movement of the drive unit may be performed in the following manner: an electric motor/actuator, a hydraulic motor/actuator, a pneumatic motor/actuator, a mechanical actuator, or a manual operation.
Drawings
Fig. 1 shows an embodiment seen from the cross section of an engine 1, in which an auger 2 (or worm or screw) is mounted in an engine flushing air belt 3 (referred to as a "purge air space" or "piston underside space") and an engine flushing air tank 4. The screw conveyor 2 is covered by a longitudinal guide plate 5.
Fig. 2 shows a schematic representation from the side of the engine 1, with the screw conveyor 2 being positioned in the engine flushing air tank 4, a part of the screw conveyor extending into a pipe or channel 9 with an opening 6.
Fig. 3 shows a schematic representation from the side of the engine, in which the screw conveyor 2 is positioned in the engine flushing air belt 3, a part of the screw conveyor extending into a duct or channel 9 with an opening 6.
Fig. 4 shows a schematic representation of an embodiment in which the screw conveyor 2 is installed in the engine flushing air belt 3 and in the integrated conduit 10 discharging from the engine 1.
Fig. 5 shows an illustration of the positioning of the screw conveyor 2 within the screw conveyor tube 13.
Fig. 6 shows a diagram of the parts of the screw conveyor 2 and the drive unit 8.
Fig. 7 shows an illustration of the screw conveyor 2 positioned relative to a surface 24 having sides inclined towards the screw conveyor 2.
Fig. 8 shows a schematic representation of the screw conveyor 2 positioned relative to a surface 24 having one vertical side.
Fig. 9 shows a diagram of the screw conveyor 2 positioned relative to the surface 24, wherein the screw conveyor 2 is positioned in a recess 25 of the surface 24 according to one embodiment.
Fig. 10 shows a representation of the screw conveyor 2 positioned relative to the surface 24, wherein the screw conveyor 2 is positioned in a recess 25 of the surface 24 according to one embodiment relative to fig. 9.
Fig. 11 shows a representation of the screw conveyor 2 positioned relative to the circular surface 24 and having a longitudinal guide plate 5.
Detailed Description
The detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only.
Fig. 1 shows an embodiment seen from the cross section of an engine 1, in which an auger 2 (or worm or screw) is mounted in an engine flushing air belt 3 (referred to as a "purge air space" or "piston underside space") and an engine flushing air tank 4 (also referred to as a "purge air receiver"). In the illustrated embodiment, the screw conveyor 2 is held in place by a longitudinal guide plate 5. The screw conveyor 2 may extend straight or slightly curved. The bottom of the engine flushing air belt 3 is suitably inclined towards the bottom of the screw conveyor 2 so that both sludge and oil will slide/flow downwards towards the bottom of the screw conveyor 2. In this way, the screw conveyor 2 is able to scrape out the deposited liquid sludge in the engine 1 towards the outlet opening 6 of the screw conveyor 2 (see fig. 3). The oil will be able to flow along the outer diameter of the screw conveyor 2 and in the hollow part of the centre 7 of the screw conveyor 2 (see fig. 4).
Fig. 2 and 3 show an embodiment seen from the side of the engine 1. The screw conveyor 2 in the present embodiment extends along all the cylinders of the engine 1. The cleaning system may also be divided into sections if desired. The figure shows a drive unit 8 mounted at the end of the screw conveyor 2 and an outlet opening 6 positioned in relation to the form of a pipe or channel 9 into which the screw conveyor 2 extends towards the outlet 6 of the pipe or channel. The outlet 6 may be connected to the tank via a pressure-tight pipe for collecting oil and sludge.
In the illustrated form, the longitudinal direction of the screw is mainly parallel to the longitudinal direction of the engine 1.
Fig. 4 shows a schematic representation of an embodiment in which the screw conveyor 2 is installed in the engine flushing air belt 3 and in the integrated conduit 10 discharging from the engine 1. In this embodiment, a valve 11 (e.g., a ball valve) is positioned at the inlet of the manifold 10. The manifold 10 is common to all cylinders of the engine 1, and it may be an advantage to use valves 11 to close the outlets of the individual cylinders. In the illustration, the cross-mounted augers 2 scrape sludge and oil from the engine flushing air belt 3 to the drive unit 8. The sludge and oil mixture will then flow/slide into the manifold 10. The screw conveyor 2a scrapes the deposited liquid sludge off the engine 1 in the longitudinal direction of the engine 1. The oil can follow the outer diameter of the screw conveyor (2) and flow in the hollow centre 7.
In the illustrated embodiment, the longitudinal direction of the screw conveyor 2 is mainly perpendicular to the longitudinal direction of the engine 1, whereas the screw conveyor 2a is built into the manifold 10 mainly along the longitudinal direction of the engine 1.
Thus, the automatic purging system may be built at any practical angle with respect to the longitudinal direction of the engine 1 and may be at any practical angle to the horizontal plane of the engine 1. However, it is an advantage to tilt towards the outlet 6 of the screw conveyor 2, 2 a.
The outlet 6 from the augers 2, 2a of the engine 1 may be designed as a round tube, a machined or cast channel or any other pressure tight conduit or channel to allow the augers 2 to freely rotate and move.
Fig. 5 and 6 show one embodiment of a drive unit 8 for a pressurized system (cleaning from the engine flushing air belt 3 and the flushing air tank 4). The illustrated augur 2 is blunt (as is the case with all of the disclosed embodiments), and this embodiment involves a conventional shaft seal 12 to seal the pressure (flushing air pressure) present in the augur pipe 13. The shaft 14 (or shaft) transmits the slow rotational movement of the gear motor 16 to cause the screw conveyor 2 to perform a screw motion. The housing 15 serves as both the base part of the auger tube 13 and as an end flange of the auger tube. The bearing housing 17 absorbs axial and radial forces of the shaft via, for example, ball bearings.
The gear motor 16 rotates the shaft 14 and the screw conveyor 2. The rotational power of the gearmotor 16 is transmitted separately by means of springs mounted through the holes 18a and 18b to ensure that the screw conveyor 2 and the gearmotor 16 are not overloaded. Part of the function of the sliding bearing 19 is to absorb the radial forces of the shaft 14 and compress the conventional shaft seal 12. The compression effect is achieved by tightening the bolts 20 such that the sliding bearing 19 is pulled in the direction of the bearing housing 15, thereby achieving a tight fit effect between the rotary shaft 14 and the stationary housing 15. The screw conveyor 2 may be fastened to the shaft 14 by means of screws 21, such as, for example, pinol screws, in recesses of the shaft 14. A shield 22 is mounted on the housing 15 to prevent access to the rotating shaft 14. The induction sensor 23 detects a desired shaft rotation.
Fig. 7 shows an embodiment in which the screw conveyor 2 is positioned relative to the surface 24. The screw conveyor 2 is positioned at the bottom of a curved surface 24 having inclined sides inclined towards the screw conveyor 2. Arrows indicate the direction in which the sludge and oil move towards the bottom of the screw conveyor 2.
Fig. 8 shows an auger 2 and a surface 24 in another embodiment, unlike the embodiment of fig. 7, one side of the surface 24 is vertical. Arrows indicate the direction in which the sludge and oil move towards the bottom of the screw conveyor 2.
Fig. 9 shows the screw conveyor 2 and the surface 24 in a third embodiment, in which, unlike the embodiment of fig. 7, the screw conveyor 2 is positioned in a recess 25 of the surface 24, the depth of which recess is such that the screw conveyor 2 reaches above the recess 25. Arrows indicate the direction in which the sludge and oil move towards the bottom of the screw conveyor 2.
Fig. 10 shows an auger 2 and a surface 24 in a fourth embodiment, which differs from the embodiment of fig. 9 in that the depth of the recess 25 is at least as great as the diameter or height of the auger 2, so that the auger is substantially completely confined within the recess 25. Arrows indicate the direction in which the sludge and oil move towards the bottom of the screw conveyor 2.
Fig. 11 shows an auger 2 and a surface 24 in a fourth embodiment, wherein the surface 24 is circular or at least curved. Arrows indicate the direction in which the sludge and oil move towards the bottom of the screw conveyor 2.
The screw conveyor 2 as shown in fig. 11, but which can also be implemented in any embodiment, is held in place by a longitudinal guide plate 5. These guide plates are both positioned and designed to ensure that sludge and oil can slide/flow down to the bottom of the screw conveyor 2. While maintaining the screw conveyor in a desired position relative to the surface 24 and/or recess 25.
Reference numerals
1-engine
2. 2 a-screw conveyor or worm
3-Engine flushing air band ("scavenging air space" or "piston bottom side space")
4-Engine flushing air tank (also referred to as "purge air receiver")
5-longitudinal guide plate
Outlet opening of 6-screw conveyor
7-screw conveyor center
8-drive unit
9-pipe or channel
10-Integrated pipe
11-valve
12-shaft seal
13-screw conveyor tube
14-shaft or shaft
15-housing
16-gear motor
17-bearing seat
18a, 18 b-holes
19-slide bearing
20-bolt
21-screw
22-guard
23-inductive sensor
24-surface
25-recess
Claims (10)
1. An engine (1) with an automatic cleaning system having a rotary flexible screw conveyor (2) fixedly mounted within a hollow portion (3, 4) of the engine (1) such that liquids and solids within the hollow portion are conveyed along the outer diameter of the screw conveyor (2).
2. An engine (1) according to claim 1, wherein the screw conveyor (2) is centreless, such that sludge and oil also flow in the centre (7) of the screw conveyor.
3. An engine (1) according to claim 1 or 2, wherein the screw conveyor (2) is flexible enough to allow the screw conveyor to extend straight or slightly curved.
4. A motor (1) according to claim 1, 2 or 3, wherein the screw conveyor (2) is positioned such that the screw conveyor can scrape sludge from the motor (1) towards the outlet opening (6).
5. An engine (1) according to claim 1, 2, 3 or 4, wherein the screw conveyor (2) is positioned in a hollow part (3) of the engine, which hollow part is a clean air space or a piston underside space.
6. An engine (1) according to claim 5, wherein the bottom of the hollow (3) is inclined towards the bottom of the screw conveyor (2) such that both sludge and oil will slide or flow downwards towards the bottom of the screw conveyor (2).
7. An engine (1) according to any one of claims 1-6, wherein the screw conveyor (2) is positioned within a hollow of the engine, which hollow is a clean air receiver.
8. An engine (1) according to any of the preceding claims, wherein the screw conveyor (2) is held in place by a longitudinal guide plate (5).
9. An engine (1) according to any of the preceding claims, wherein a drive unit (8) is mounted at the end of the screw conveyor (2).
10. The engine (1) according to any of the preceding claims, wherein the screw conveyor (2) is positioned in an integrated conduit (10) discharging from the engine (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202100057 | 2021-01-19 | ||
| DKPA202100057 | 2021-01-19 | ||
| PCT/EP2022/050960 WO2022157134A1 (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system for sludge cleaning - built into two-stroke cross-head engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116997708A true CN116997708A (en) | 2023-11-03 |
Family
ID=80050960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280021701.6A Pending CN116997708A (en) | 2021-01-19 | 2022-01-18 | Automatic cleaning system constructed in two-stroke cross engine for sludge cleaning |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4281657A1 (en) |
| JP (1) | JP2024504579A (en) |
| KR (1) | KR20230130108A (en) |
| CN (1) | CN116997708A (en) |
| WO (1) | WO2022157134A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB468813A (en) | 1936-07-14 | 1937-07-13 | George Schwabach | Conveyor devices for ashes, cinders and the like |
| DE102005035509A1 (en) * | 2005-07-26 | 2007-02-01 | Marco Wiedel | Tool for removing deposits in pipes has a coupling piece for a detachable fastening on a spiral and a rod linked to it extending in an axial direction with metal bristles radiating from it |
| CN204412719U (en) * | 2014-12-31 | 2015-06-24 | 青岛东方循环能源有限公司 | A kind of cracking gas conveyance conduit cleaning plant |
| US10844881B2 (en) * | 2016-03-28 | 2020-11-24 | Fange Innova | Apparatus for outputting a solid material, such as entrained in a fluid |
| DK180242B1 (en) * | 2017-06-20 | 2020-09-08 | Thorhansa Aps | Automatic cleaning drain system for use on two-stroke engines |
-
2022
- 2022-01-18 EP EP22700954.5A patent/EP4281657A1/en active Pending
- 2022-01-18 KR KR1020237027740A patent/KR20230130108A/en unknown
- 2022-01-18 JP JP2023540899A patent/JP2024504579A/en active Pending
- 2022-01-18 WO PCT/EP2022/050960 patent/WO2022157134A1/en active Application Filing
- 2022-01-18 CN CN202280021701.6A patent/CN116997708A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022157134A1 (en) | 2022-07-28 |
| KR20230130108A (en) | 2023-09-11 |
| EP4281657A1 (en) | 2023-11-29 |
| JP2024504579A (en) | 2024-02-01 |
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