Movable type vacuum liquid exchanger cleaning system and method used in diesel engine assembling process

Abstract

The invention relates to an on-site cleaning scheme for a mobile vacuum liquid changer. The on-site cleaning scheme is used for solving the problems that in the current on-site installation process, people cannot clean places where oil is accumulated, the places which cannot be cleaned internally are guaranteed to a great extent, the clean state of the interior is guaranteed, and the situation that the interior of the interior oil is not clean is avoided. The scheme of the invention comprises a tool structure. In the cleaning process of field components, the movable type vacuum liquid exchanger tool is placed on a designated part accessory, at the moment, a suction and discharge main pump of the tool is utilized, a suction and discharge function mechanism on the main pump is adjusted to suck and blow out the interior of the tool, and the suction and discharge main pipe is placed at the position needing to be cleaned and treated; and the suction and discharge main pump works, so that oil accumulation positions and garbage existing positions are treated, and the cleaning degree of the oil accumulation positions and the garbage existing positions is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical assembly tooling, and particularly relates to a mobile vacuum liquid changer cleaning system and cleaning method for diesel engine assembly process. Background Art

[0002] At present, during the assembly process of marine diesel engines, many components need to be installed, the on-site environment is complex, and in some areas of some components, personnel cannot perform thorough cleaning. Therefore, during the installation process of diesel engines, multiple cleaning operations need to be carried out on each component. If garbage accidentally falls into the interior of the component during cross-operation and is directly installed without being thoroughly cleaned, quality problems and quality accidents will occur. Therefore, it is necessary to design a simple and easy-to-operate on-site cleaning tooling with strong versatility to ensure that garbage can be effectively cleaned when components are installed on-site, and areas that cannot be thoroughly cleaned manually can be thoroughly cleaned, ensuring the cleaning state when components are installed, thus avoiding many potential quality problems caused by unclean cleaning.

[0003] In summary, the current cleaning problems before on-site component installation are as follows:

[0004] There are many components in the diesel engine structure, and there are small positions where manual cleaning by humans cannot ensure thorough cleaning.

[0005] There are many cross-operations during the assembly process of diesel engines, such as dust and attached iron filings on the body when installing internal parts. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the existing assembly and production processes, and propose a mobile vacuum liquid changer cleaning system for diesel engine assembly process. It can solve the problem that during the installation process of current diesel engine components, multiple cleaning operations need to be carried out on each component. If garbage accidentally falls into the interior of the component during cross-operation and is directly installed without being thoroughly cleaned, quality problems and quality accidents will occur. This design can effectively avoid problems such as related quality problems and their potential hazards caused by unclean cleaning inside components.

[0007] The technical solution of the present invention;

[0008] A mobile vacuum liquid changer cleaning system for diesel engine assembly process, characterized by comprising:

[0009] A mobile trolley (1) for the overall movement and positioning of the tooling;

[0010] A collection tank (2) for storing the sucked oil and solid impurities;

[0011] A suction and discharge main pump (3) with a switchable suction and discharge bidirectional function;

[0012] A flow control valve (4) for regulating the fluid flow rate;

[0013] A replaceable suction and discharge pipe group (5) including suction and discharge pipes with different pipe diameters and lengths;

[0014] Wherein, the suction and discharge main pump (3) is connected to the collection tank (2) through the flow control valve (4), and the suction and discharge pipe group (5) is connected to the output end of the suction and discharge main pump (3); the collection tank (2) is fixed on the mobile trolley (1).

[0015] Furthermore, a three-stage filtration device is provided inside the collection tank (2), including:

[0016] A primary metal filter screen located at the entrance of the collection tank;

[0017] An intermediate fiber filter layer located in the middle of the collection tank;

[0018] A final oil-water separation membrane located at the bottom of the collection tank.

[0019] Furthermore, it further includes: a pressure sensor (6) installed at the outlet of the suction and discharge main pump (3);

[0020] A liquid level sensor (7) installed on the side wall of the collection tank (2);

[0021] A control panel (8) installed on the operating handle of the mobile trolley (1).

[0022] A cleaning method for diesel engine component assembly, using the above-mentioned mobile vacuum exchanger cleaning system, characterized by including the following steps:

[0023] Step 1. Move the cleaning system to the area of the component to be cleaned;

[0024] Step 2. Select and install a suitable suction and discharge pipe according to the cleaning requirements;

[0025] Step 3. Set the working mode and pressure parameters of the suction and discharge main pump (3);

[0026] Step 4. Perform the cleaning operation, including:

[0027] - The oil extraction stage;

[0028] - The impurity removal stage;

[0029] - The compressed air purging stage;

[0030] Step 5. Conduct a cleanliness test after the cleaning is completed.

[0031] Further, in the compressed air purging stage described in step (4), the pressure is 0.3 - 0.5 MPa, the purging time is 30 - 60 seconds, and the suction and discharge pipe (5) is aligned with the part to be cleaned.

[0032] Further, in step (5), an endoscope is used for cleanliness detection.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] 1) Through the solution of the present invention, the cleaning work of parts can be completed quickly and conveniently.

[0035] 2) Through the solution of the present invention, when installing the cleaning tooling during the installation of parts, it is more convenient and rapid, and the manual labor load is reduced.

[0036] 3) Through the solution of the present invention, problems such as the inability to clean small corners, dead ends, and places that cannot be cleaned manually of parts can be avoided.

[0037] 4) When using this tooling during the installation of parts in the workshop, the labor cost and installation cycle are effectively reduced. Description of the Drawings

[0038] Figure 1 is a schematic structural diagram of the mobile vacuum liquid changer cleaning system used in the diesel engine assembly process of the present invention

[0039] In the figure:

[0040] 1 - Mobile trolley 2 - Collection tank 3 - Main suction and discharge pump 4 - Ball valve 5 - Pipe (thin copper pipe) Detailed Embodiments

[0041] The following further elaborates in detail in conjunction with the drawings and the pre - cleaning work during the diesel engine parts assembly process, but the protection scope of the present invention cannot be limited thereby.

[0042] Please refer to Figure 1 , Figure 1 is a schematic structural diagram of the mobile vacuum liquid changer cleaning system used in the diesel engine assembly process of the present invention. As shown in the figure, the implementation of the mobile vacuum liquid changer cleaning system in this embodiment mainly includes the following steps:

[0043] (1) Installation of basic components:

[0044] Place the mobile trolley (1) on a horizontal working site, unfold the anti - tipping support legs and lock the braking mechanism

[0045] Install the collection tank (2) at the position shown in the drawing to ensure its firm fixation to the trolley chassis

[0046] Install the main suction and discharge pump (3) above the collection tank and ensure tightness through flange connection.

[0047] (2) Pipeline system connection:

[0048] According to Figure 1 Layout and connect the stainless steel pipeline between the main pump (3) and the collection tank (2);

[0049] Install the flow control valve (4) on the outlet pipeline of the main pump, with the valve body direction consistent with the fluid flow direction;

[0050] Configure the pressure sensor (6) and the liquid level sensor (7) and wire them to the control panel (8).

[0051] 2. Operation implementation process

[0052] (1) Pretreatment stage:

[0053] Select the suction and discharge pipe group (5) according to the type of parts to be cleaned:

[0054] For regular cleaning, select the rigid metal pipe (Φ8mm×500mm); for complex structures, select the flexible hose (Φ6mm×800mm).

[0055] For cleaning metal debris, select the magnetic suction head;

[0056] Start the system self-check program and confirm that: the remaining capacity of the collection tank > 30%, the filter pressure difference < 0.1MPa, and the system tightness is good.

[0057] (2) Cleaning operation implementation:

[0058] Oil extraction mode: Set the main pump (3) to the negative pressure mode (-0.05MPa), insert the suction and discharge pipe (5) into the oil accumulation area, open the ball valve (4) to 1 / 2 opening, observe the flow display on the control panel, and control the single extraction time within 3 - 5 minutes;

[0059] Impurity removal mode: Switch the main pump to the high pressure mode (0.3MPa) and use the pulsed operation: work for 5 seconds / interval for 2 seconds. For stubborn impurities, the magnetic suction head can be used in combination;

[0060] Blow - off stage: Switch to the positive pressure mode (0.4MPa) and use a fan - shaped nozzle for wide - area blow - off, with key treatment of the dead - end areas shown in the attached drawings;

[0061] (3) Post - treatment stage: Use an endoscope (equipped with LED lighting, diameter 4mm) for cleanliness verification.

[0062] Waste liquid treatment in the collection tank: Open the bottom discharge valve, separate the oil and solid waste through a three - stage filtration system and store them in the designated recycling containers respectively.

[0063] When using this tooling for installation and cleaning, it will effectively clean the fine garbage and accumulated oil in the parts, reduce the labor cost in the workshop, etc., and greatly improve the production efficiency.

[0064] Through the cleaning tooling, before assembling the parts, thoroughly clean their inside and outside, and use compressed air for the places that cannot be cleaned manually to clean their inside in time, ensuring the clean state of the parts during installation. Using this tooling to clean the parts before installation can ensure the clean state of the parts during installation to the greatest extent, and make the final guarantee for the dead corners and the places that cannot be handled by hand.

[0065] The above is the best embodiment of the present invention, and the protection scope of the present invention cannot be limited thereby. The protection scope of the present invention also includes other obvious transformations and replacements for those skilled in the art.

Claims

1. A mobile vacuum fluid changer cleaning system for use in a diesel engine assembly process, characterized in that: include: A mobile cart (1) is used for overall movement and positioning of the tooling; A collection tank (2) for storing the absorbed oil and solid impurities; A suction and discharge main pump (3) having a switchable suction and discharge bidirectional function; A flow control valve (4) for adjusting the flow of a fluid; A replaceable suction and discharge pipe set (5), comprising suction and discharge pipes of different diameters and lengths; The suction and discharge main pump (3) is connected to the collection tank (2) via a flow control valve (4), and the suction and discharge pipe group (5) is connected to the output end of the suction and discharge main pump (3); the collection tank (2) is fixed on the mobile cart (1).

2. The mobile vacuum liquid changer cleaning system according to claim 1, characterized in that: The collecting tank (2) is provided with a three-stage filtering device, comprising: Primary metal filter, located at the entrance of the collection tank; The intermediate fiber filter layer is located in the middle of the collection tank; The final oil-water separation membrane is located at the bottom of the collection tank.

3. The mobile vacuum liquid changer cleaning system according to claim 1, characterized in that: Also includes: A pressure sensor (6) is installed at the outlet of the suction and discharge main pump (3); A liquid level sensor (7) is mounted on the side wall of the collection tank (2); A control panel (8) is mounted on the operating handle of the mobile cart (1).

4. A diesel engine parts assembly cleaning method, using the mobile vacuum fluid changer cleaning system according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1. Move the cleaning system to the area of ​​the parts to be cleaned; Step 2. Select and install appropriate suction and exhaust pipes according to cleaning requirements; Step 3. Setting the working mode and pressure parameters of the suction and discharge main pump (3); Step 4. Perform cleaning operations, including: -Oil extraction stage; -Impurity removal stage; - Compressed air purge phase; Step 5. Perform cleanliness inspection after cleaning is completed.

5. The diesel engine parts assembly and cleaning method according to claim 4, characterized in that: The pressure of the compressed air purging stage in step (4) is 0.3-0.5 MPa, the purging time is 30-60 seconds, and the suction and discharge pipe (5) is aimed at the part to be cleaned.

6. The diesel engine parts assembly and cleaning method according to claim 4, characterized in that: In step (5), cleanliness detection is performed using an endoscope.

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