CN110397530B - Drainage system and drainage method for fuel filter - Google Patents

Drainage system and drainage method for fuel filter Download PDF

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Publication number
CN110397530B
CN110397530B CN201910533247.2A CN201910533247A CN110397530B CN 110397530 B CN110397530 B CN 110397530B CN 201910533247 A CN201910533247 A CN 201910533247A CN 110397530 B CN110397530 B CN 110397530B
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liquid level
valve
air compressor
cup body
assembly
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CN110397530A (en
Inventor
梁昌水
刘丽冉
邬忠永
梁冰
王福宏
黄国庆
张涛
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/24Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
    • F02M37/26Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means
    • F02M37/28Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means with means activated by the presence of water, e.g. alarms or means for automatic drainage

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

The invention belongs to the technical field of engine fuel systems, and particularly relates to a drainage system and a drainage method for a fuel filter, which comprise a cup body, a valve component, a liquid level detection component and an air compressor component, wherein a drainage port is arranged on the cup body, the valve component is arranged on the cup body and is correspondingly matched with the drainage port, the liquid level detection component is arranged in the cup body and is used for detecting the liquid level in the cup body, the air compressor component is respectively connected with the liquid level detection component and the valve component, when the liquid level in the cup body is equal to a first preset value of the liquid level detection component, the air compressor component drives the valve component to open the drainage port, and when the liquid level in the cup body is equal to a second preset value of the liquid level detection component, the valve component closes the drainage port, according to the drainage system for the fuel filter, the manual drainage mode is changed, and an air compressor of the vehicle is used as a power source, so that energy is saved and emission is reduced.

Description

Drainage system and drainage method for fuel filter
Technical Field
The invention belongs to the technical field of engine fuel systems, and particularly relates to a drainage system and a drainage method for a fuel filter.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
At present, the normal operation of an automobile engine cannot be realized without opening fuel, and an automobile fuel filtering system is used for removing moisture and other impurities in the fuel. Most of the water and impurities in the fuel oil are from the poor treatment process and the transportation and storage process of the oil refinery. Moisture and impurities in the fuel may reduce the lubricity of the fuel, causing wear of components of the fuel filter system, resulting in failure.
In order to ensure the normal operation of a vehicle and reduce the loss of the vehicle, manual drainage is usually needed, when the drainage of a client is not timely, faults such as damage of an oil sprayer and the like are easily caused, and rusting and clamping stagnation of an engine plunger can be caused in serious conditions.
Disclosure of Invention
The invention aims to at least solve the problem of engine failure caused by untimely water drainage. The purpose is realized by the following technical scheme:
the invention provides a drainage system for a fuel filter, which comprises a cup body, a valve component, a liquid level detection component and an air compressor component, wherein a water outlet is formed in the cup body, the valve component is arranged on the cup body and is correspondingly matched with the water outlet, the liquid level detection component is arranged in the cup body and is arranged to detect the liquid level height in the cup body, the air compressor component is respectively connected with the liquid level detection component and the valve component, when the liquid level height in the cup body is equal to a first preset value of the liquid level detection component, the air compressor component drives the valve component to open the water outlet, and when the liquid level height in the cup body is equal to a second preset value of the liquid level detection component, the valve component closes the water outlet.
According to the drainage system for the fuel filter, in the initial state, the valve component seals the drainage port, the liquid level detection component detects the liquid level height in the cup body along with the increase of the accumulated water in the cup body, when the liquid level height is equal to the first preset value, the liquid level detection component sends a signal to the air compressor component to enable the air compressor component to be communicated with the valve component, the valve component is driven to open the drainage port, the accumulated water in the cup body is drained from the drainage port, compared with manual drainage, the drainage automation is realized, the problem that the engine fails due to the fact that a driver forgets manual drainage is avoided, the service life of a diesel engine is prolonged, the operation cost of a user is reduced, the drainage can be carried out regularly, the air pressure generated by the air compressor of the vehicle is utilized to enable the valve component to open the drainage port, and, energy saving and emission reduction uses the whole power consumption and the oil consumption that the pneumatic valve module of opening had reduced the vehicle, and compares in the mode that uses the solenoid valve to open the outlet, and the operation cost is low, and ponding can not influence the operation of valve module, stable performance, and the reliability is high, and when liquid level equals the second default, liquid level detection subassembly with this signal transmission to air compressor machine subassembly, make air compressor machine subassembly and external environment intercommunication, the valve module closes the outlet, stops the drainage.
In addition, the drainage system for the fuel filter according to the embodiment of the invention can also have the following additional technical characteristics:
in some embodiments of the invention, the valve assembly comprises:
the opening and closing valve is correspondingly matched with the water outlet and is connected with the air compressor assembly;
and the connecting arm is used for connecting the opening and closing valve and the cup body.
In some embodiments of the invention, the on-off valve comprises:
the valve seat is connected to the connecting arm;
and one end of the valve body is correspondingly matched with the water outlet, and the other end of the valve body is in sliding connection with the valve seat.
In some embodiments of the invention, the on-off valve further comprises:
the elastic return piece is arranged between the valve seat and the valve body.
In some embodiments of the invention, the liquid level detection assembly comprises:
the liquid level sensor is arranged in the cup body and is used for detecting the liquid level height in the cup body, and when the page height in the cup body is equal to the first preset value, the air compressor assembly drives the valve body to open the water outlet;
and the liquid level sensor and the air compressor component are connected with the controller.
In some embodiments of the invention, a first probe and a second probe are disposed on the level sensor;
the first probe has the first preset value;
the second probe has the second preset value.
In some embodiments of the present invention, the air compressor assembly includes:
an air compressor:
the air storage tank is connected with the air compressor;
and the gas storage tank, the liquid level detection assembly and the valve assembly are connected with the control valve.
In some embodiments of the invention, further comprising:
a first conduit connecting the valve assembly and the air compressor assembly;
and the second pipeline is connected with the air compressor assembly and the external environment.
In some embodiments of the invention, a timer is also included;
the timer is connected with the controller.
The invention provides a water draining method for a fuel filter, which utilizes the water draining system for the fuel filter to drain water, and comprises the following steps:
the liquid level in the cup body is detected through the liquid level detection assembly, and a signal is sent to the air compressor assembly;
when the liquid level height is equal to a first preset value, triggering the air compressor assembly through the liquid level detection assembly, and opening the water discharge port;
and when the liquid level height is equal to a second preset value, triggering the air compressor assembly through the liquid level detection assembly, and closing the water discharge port.
According to the water drainage method for the fuel filter, disclosed by the embodiment of the invention, the automatic water drainage of the cup body can be realized through the air compressor assembly, so that the engine fault caused by the fact that a driver forgets to drain water manually is avoided, and the air pressure generated by the air compressor assembly is reasonably utilized.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a drainage system for a fuel filter according to an embodiment of the present invention, in which the liquid level reaches a first preset value;
FIG. 2 is a schematic view of the structure of FIG. 1 during a water discharge process;
FIG. 3 is a schematic view of the structure of FIG. 1 for stopping drainage;
FIG. 4 is a schematic flow chart of a drainage method for a fuel filter according to an embodiment of the invention.
The reference symbols in the drawings denote the following:
1. a cup body; 11. a water outlet;
2. a valve assembly; 21. a valve body; 22. a valve seat; 23. an elastic return member; 24. a connecting arm;
3. a liquid level detection assembly; 31. a liquid level sensor; 32. a controller; 311. a first probe; 312. a second probe;
4. an air compressor assembly; 41. an air compressor; 42. a gas storage tank; 43. a control valve;
5. a first conduit;
6. a second conduit.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 4, a first aspect of the present invention provides a drainage system for a fuel filter according to an embodiment, including a cup body 1, a valve assembly 2, a liquid level detection assembly 3, and an air compressor assembly 4, wherein a water outlet 11 is disposed on the cup body 1, the valve assembly 2 is disposed on the cup body 1 and is correspondingly matched with the water outlet 11, the liquid level detection assembly 3 is disposed in the cup body 1 and is configured to detect a liquid level inside the cup body 1, the air compressor assembly 4 is respectively connected to the liquid level detection assembly 3 and the valve assembly 2, when the liquid level inside the cup body 1 is equal to a first preset value of the liquid level detection assembly 3, the air compressor assembly 4 drives the valve assembly 2 to open the water outlet 11, and when the liquid level inside the cup body 1 is equal to a second preset value of the liquid level detection assembly 3.
According to the drainage system for the fuel filter, in an initial state, the valve component 2 seals the drainage port 11 and is in a normally closed state, the liquid level detection component 3 detects the liquid level height in the cup body 1 along with the increase of the accumulated water in the cup body 1, when the liquid level height is equal to a first preset value, the liquid level detection component 3 sends a signal to the air compressor component 4 to enable the air compressor component 4 to be communicated with the valve component 2 and drive the valve component 2 to open the drainage port 11, the accumulated water in the cup body 1 is drained out of the drainage port 11, compared with manual drainage, drainage automation is achieved, engine faults caused by the fact that a driver forgets manual drainage are avoided, the service life of a diesel engine is prolonged, the operation cost of a user is reduced, drainage can be carried out regularly, and the drainage port 11 is opened by the valve component 2 through the air pressure generated by the air compressor 41 of the vehicle, the air that produces of air compressor 41 is abundant rational utilization, energy saving and emission reduction, use the whole power consumption and the oil consumption that the pneumatic valve module 2 that opens has reduced the vehicle, and compare in the mode that uses the solenoid valve to open outlet 11, the operation cost is low, and ponding can not influence the operation of valve module 2, stable performance, the reliability is high, when liquid level equals the second default, liquid level detection subassembly 3 sends this signal to air compressor machine subassembly 4, make air compressor machine subassembly 4 and external environment intercommunication, valve module 2 closes outlet 11, stop the drainage.
When the automatic drainage is invalid, the valve component 2 can be manually operated to drain water, a drainage valve is not needed, the operation cost is reduced, and the manufacturing process is simple.
The drain port 11 may be provided at the bottom or side of the cup body 1, and may be adjusted according to actual conditions, but is not limited thereto, and the drain port 11 will be described below as being provided at the bottom of the cup body 1.
In some embodiments of the present invention, the valve assembly 2 includes an opening and closing valve and a connecting arm 24, the opening and closing valve is connected to the cup body 1 through the connecting arm 24, the opening and closing valve includes a valve body 21 and a valve seat 22, the water outlet 11 is a step surface formed on the cup body 1, one end of the valve body 21 is correspondingly matched with the step surface, the other end of the valve body is connected to the valve seat 22, and the valve body 21 moves in the valve seat 22 to open the water outlet 11 under the action of the air compressor assembly 4.
The number of the connecting arms 24 can be one, two or more, in one embodiment, the number of the connecting arms 24 is two or more, the connecting arms 24 are connected with the bottom of the cup body 1 through bolts to provide supporting force for the valve body 21 and the valve seat 22, and a sealing ring can be further arranged at one end of the valve body 21, which is correspondingly matched with the water outlet 11, so that the sealing performance of the cup body 1 in a non-drainage state, namely a normally-closed state, is enhanced, and the phenomenon that a drainage system is out of order due to leakage of accumulated water is avoided.
In some embodiments of the present invention, during water drainage, the valve body 21 is opened upwards under the action of the air pressure output of the air compressor 41, so that the interior of the cup body 1 is communicated with the external environment, accumulated water is drained, after water drainage is completed, the air pressure of the air compressor 41 disappears, the valve body 21 returns to the initial state under the action of self weight and liquid pressure, in order to quickly return the valve body 21, the valve seat 22 is further provided with the elastic return member 23, specifically, the elastic return member 23 is arranged between the valve body 21 and the valve seat 22, during water drainage, the valve body 21 moves upwards to press the elastic return member 23, and after water drainage is completed, the valve body 21 applies an elastic force to the valve body 21 in addition to the action of self weight and liquid pressure, so that the valve body 21 returns to the initial state.
Wherein the initial state is a normally closed state in which the valve body 21 closes the drain opening 11 under the action of the self-weight, the liquid pressure and the elastic force of the elastic return member 23, and the elastic return member 23 may be rubber, an elastic sheet, a leaf spring or a cylindrical spring, and in one embodiment, is a cylindrical spring.
In some embodiments of the present invention, the liquid level detection assembly 3 includes a liquid level sensor 31 and a controller 32, the liquid level sensor 31 is configured to obtain liquid level information in the cup body 1 and send the liquid level information to the controller 32, and the controller 32 triggers the air compressor assembly 4 to connect with or disconnect from the valve assembly 2, specifically, the liquid level sensor 31 is disposed in the cup body 1 and has a first probe 311 and a second probe 312, the first probe 311 has a first preset value, when the liquid level in the cup body 1 reaches the first preset value, the signal is sent to the controller 32, the controller 32 triggers the air compressor assembly 4 to connect with the valve assembly 2, the air compressor assembly 4 drives the valve assembly 2 to open for draining, the second probe 312 has a second preset value, the second preset value is smaller than the first preset value, when the liquid level in the cup body 1 reaches the second preset value, the signal is sent to the controller 32, the controller 32 triggers the air compressor assembly 4 and the valve assembly 2 to be disconnected, the valve assembly 2 recovers to the initial state under the action of self gravity, accumulated water pressure and elastic force of the elastic return piece 23, water drainage is stopped, the time required from water drainage starting to water drainage stopping is recorded through the timer, the quality of used fuel can be judged, the drainage times in unit time can be recorded through the timer, and a user can be guided to select the fuel quality in the use process of the vehicle.
The controller 32 may be provided separately or by using an ECU of the vehicle itself, and in one embodiment, the controller is an ECU (Electronic Control Unit) of the vehicle itself, and the Unit time may be day, week, month, season, and the like.
In some embodiments of the present invention, the air compressor assembly 4 includes an air compressor 41, an air storage tank 42 and a control valve 43, the air compressor 41 is an indispensable braking air source component in a vehicle air braking system, the air compressor 41 is used as a power source, the opening of the water discharge opening 11 by the valve assembly 2 is realized by using the air pressure generated by the air compressor 41, the air pressure generated by the air compressor 41 is reasonably utilized, energy saving and emission reduction are realized, the air generated by the air compressor 41 is temporarily stored in the air storage tank 42, the air storage tank 42 can always output stable pressure during water discharge operation, so that the water discharge opening 11 is always in an open state, the control valve 43 is connected with the valve seat 22 through a first pipeline 5 and is connected with the external environment through a second pipeline 6, when the controller 32 obtains a signal that the liquid level in the cup body 1 reaches a first preset value, the controller 32 triggers, the air storage tank 42, the control valve 43, the first pipeline 5 and the valve seat 22 are communicated, the valve body 21 is driven by air pressure to upwards open the water outlet 11 for water drainage, when the controller 32 obtains a signal that the liquid level in the cup body 1 reaches a second preset value, the controller 32 triggers the control valve 43 to close a channel between the control valve 43 and the air storage tank 42, the valve seat 22, the control valve 43 and the second pipeline 6 are communicated with the external environment, the valve body 21 losing air pressure recovers to an initial state under the action of self gravity, liquid pressure and elastic force of the elastic return piece 23 to close the water outlet 11 to stop water drainage, when automatic water drainage fails, the valve assembly 2 can be manually operated to drain water, specifically, the connecting part of the first pipeline 5 and the valve seat 22 is disconnected, a rod-shaped tool stretches into the valve seat 22 to jack the valve body 21 up to open the water outlet 11 for water drainage, after the water drainage is completed, the valve body 21 is restored to the initial state under the action of the self gravity, the liquid pressure and the elastic force of the elastic return piece 23 to close the water outlet 11 and stop draining, the rod-shaped tool can be used as local materials in the arrangement mode, the diameter is smaller than that of the valve seat 22, a manual drain valve is not needed, the operation cost is further reduced, and the whole manufacturing process is simple.
An unloading valve and an unloading pipeline are arranged between the air compressor 41 and the air storage tank 42, the air compressor 41, the unloading valve, the unloading pipeline and the air storage tank 42 are sequentially connected, the unloading valve is opened, gas exhausted by the air compressor 41 directly enters the air storage tank 42 to serve as power for the valve component 2 to open the water outlet 11, the gas does not enter the external environment, and air generated by the air compressor 41 is reasonably utilized.
Wherein, the control valve 43 is pneumatic valve, simple structure, and easily installation compared in the solenoid valve, has reduced the power consumption of whole car, has reduced the oil consumption, has further reduced the operation cost, can not lead to unable drainage because of ponding entering control valve 43 inside problem that causes the inefficacy, and first pipeline 5 and second pipeline 6 arrange according to the structure of vehicle.
As shown in fig. 4, a second aspect of the present invention provides a water draining method for a fuel filter according to an embodiment, wherein the water draining method for the fuel filter is used for draining water by using the water draining system for the fuel filter, and the method comprises the following steps:
the liquid level in the cup body is detected through the liquid level detection assembly, and a signal is sent to the air compressor assembly;
when the liquid level height is equal to a first preset value, triggering the air compressor assembly through the liquid level detection assembly, and opening the water discharge port;
and when the liquid level height is equal to a second preset value, triggering the air compressor assembly through the liquid level detection assembly, and closing the water discharge port.
According to the water drainage method for the fuel filter, disclosed by the embodiment of the invention, the automatic water drainage of the cup body 1 can be realized through the air compressor assembly 4, the engine fault caused by the fact that a driver forgets to drain water manually is avoided, and the air pressure generated by the air compressor assembly 4 is reasonably utilized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (9)

1. A drainage system for a fuel filter, comprising:
the cup body is provided with a water outlet;
the valve assembly is arranged on the cup body and is correspondingly matched with the water outlet;
a liquid level detection assembly disposed within the cup body and configured to detect a liquid level within the cup body;
an air compressor machine subassembly, the air compressor machine subassembly respectively with the liquid level detection subassembly with the valve member is connected, the air compressor machine subassembly includes:
an air compressor;
the air compressor, the unloading valve, the unloading pipeline and the air storage tank are sequentially connected;
the gas storage tank, the liquid level detection assembly and the valve assembly are all connected with the control valve;
when the liquid level in the cup body is equal to a first preset value of the liquid level detection assembly, the air compressor assembly drives the valve assembly to open the water outlet;
and when the liquid level in the cup body is equal to a second preset value of the liquid level detection assembly, the valve assembly closes the water outlet.
2. The drain system for a fuel filter of claim 1, wherein the valve assembly comprises:
the opening and closing valve is correspondingly matched with the water outlet and is connected with the air compressor assembly;
and the connecting arm is used for connecting the opening and closing valve and the cup body.
3. The drain system for a fuel filter of claim 2, wherein the on-off valve comprises:
the valve seat is connected to the connecting arm;
and one end of the valve body is correspondingly matched with the water outlet, and the other end of the valve body is in sliding connection with the valve seat.
4. The drain system for a fuel filter of claim 3, wherein the on-off valve further comprises:
the elastic return piece is arranged between the valve seat and the valve body.
5. The drainage system for a fuel filter of claim 3 wherein the liquid level detection assembly comprises:
the liquid level sensor is arranged in the cup body and is used for detecting the liquid level height in the cup body, and when the page height in the cup body is equal to the first preset value, the air compressor assembly drives the valve body to open the water outlet;
and the liquid level sensor and the air compressor component are connected with the controller.
6. The drain system for a fuel filter of claim 5, wherein the level sensor has a first probe and a second probe disposed thereon;
the first probe has the first preset value;
the second probe has the second preset value.
7. The drainage system for a fuel filter of claim 1 further comprising:
a first conduit connecting the valve assembly and the air compressor assembly;
and the second pipeline is connected with the air compressor assembly and the external environment.
8. The drainage system for a fuel filter of claim 5 further comprising a timer;
the timer is connected with the controller.
9. A drainage method for a fuel filter, which is performed by using the drainage system for a fuel filter of claims 1 to 8, comprising:
the liquid level in the cup body is detected through the liquid level detection assembly, and a signal is sent to the air compressor assembly;
when the liquid level height is equal to a first preset value, triggering the air compressor assembly through the liquid level detection assembly, and opening the water discharge port;
and when the liquid level height is equal to a second preset value, triggering the air compressor assembly through the liquid level detection assembly, and closing the water discharge port.
CN201910533247.2A 2019-06-19 2019-06-19 Drainage system and drainage method for fuel filter Active CN110397530B (en)

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Publication number Priority date Publication date Assignee Title
CN111502878B (en) * 2020-05-09 2021-06-25 三一重机有限公司 Fuel filter and mechanical equipment
CN111765002B (en) * 2020-05-22 2022-05-31 中国人民解放军92942部队 Fuel oil moisture on-line monitoring and automatic processing system
CN111765022B (en) * 2020-05-22 2022-02-22 中国人民解放军92942部队 Marine fuel system monitoring and handling device

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CN101126382A (en) * 2007-09-07 2008-02-20 山东明水汽车配件厂 Air cleaner
CN201561179U (en) * 2009-12-31 2010-08-25 李辉 Special pneumatic valve for adsorption dryer system
DE102010046528A1 (en) * 2010-09-24 2012-03-29 Mahle International Gmbh Fluid filter i.e. fuel filter, for filtering diesel fuel in combustion engine, has sleeve rotatably supported at valve piston of drain valve, where air inlet into chamber and draining of fluid/water are carried-out in opened state of valve
CN103453166B (en) * 2013-09-18 2015-12-09 石家庄嘉祥精密机械有限公司 Locomotive air source system filters Pneumatic draining valve
CN109184977A (en) * 2018-08-27 2019-01-11 潍柴动力股份有限公司 Auto-drainage cup, drainage system and water discharge method for fuel filter
CN109058012B (en) * 2018-10-12 2024-01-23 平原滤清器有限公司 Automatic drainage device, fuel filter using same and using method thereof

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