CN109488498B - Automatic water drain valve of fuel filter and fuel filter - Google Patents
Automatic water drain valve of fuel filter and fuel filter Download PDFInfo
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- CN109488498B CN109488498B CN201811582224.2A CN201811582224A CN109488498B CN 109488498 B CN109488498 B CN 109488498B CN 201811582224 A CN201811582224 A CN 201811582224A CN 109488498 B CN109488498 B CN 109488498B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 157
- 239000000446 fuel Substances 0.000 title claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 60
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Abstract
The invention provides an automatic water drain valve of a fuel filter and the fuel filter, which belong to the field of filters and comprise a valve seat, a shell and a valve body, wherein one end of the valve seat is a water inlet, and the other end of the valve seat is a first hollow cavity; the shell comprises a second hollow cavity and a third hollow cavity, and the first hollow cavity and the second hollow cavity are communicated to form a containing cavity; the valve body is installed in holding the intracavity, including valve rod, solenoid and fixed iron core. According to the automatic water drain valve of the fuel filter, the water level sensor detects accumulated water in the filter and transmits signals to the controller, the valve rod moves downwards under the action of the electromagnetic coil and the fixed iron core, the air inlet hole and the water inlet hole are opened, the water drain pipe is closed, and accumulated water in the filter is collected in the accommodating cavity; when the water level sensor detects that the accumulated water is in the set range, the signal is transmitted to the controller, the valve rod moves upwards, the air inlet hole and the water inlet hole are sealed, the sealing piece of the water outlet hole is opened, and at the moment, the accumulated water in the valve is ensured to be smoothly discharged from the water outlet pipe due to the fact that the water outlet hole still enters the air.
Description
Technical Field
The invention belongs to the technical field of filters, and particularly relates to an automatic water drain valve of a fuel filter and the fuel filter with the water drain valve.
Background
The normal operation of an automobile engine is not separated from fuel, and an automobile fuel system is required to remove moisture and other impurities in the fuel. The water and impurities in the fuel are mostly derived from the poor transportation and storage process of the refinery process.
Moisture and impurities in the fuel can reduce the lubricating performance of the fuel, lead to abrasion of parts of a fuel system and failure. In order to ensure normal operation of the vehicle and reduce automobile loss, a fuel filter (oil-water separator) is usually installed in the fuel system and is provided with a manual water drain valve. The separated water in the fuel system is accumulated at the bottom of the filter, and when the accumulated water reaches a certain height, the accumulated water is required to be discharged.
Most of the prior art is used for discharging accumulated water by opening a water drain valve after reaching a certain water level, so that the principle is simpler and the problem is easy to occur.
Disclosure of Invention
The invention aims to provide an automatic water drain valve of a fuel filter, which solves the technical problem that in the prior art, parts are worn due to untimely water drainage.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an automatic water drain valve of fuel filter, the automatic water drain valve of fuel filter includes:
the water inlet is formed in one end of the valve seat, a bell jar protruding outwards is arranged in the middle of the water inlet, a water level sensor and an air inlet are arranged at the closed end of the bell jar, an extending surface extending outwards from the open end of the bell jar is connected with the inner wall of the valve seat, a water inlet hole is formed in the extending surface, the other end of the valve seat bulges outwards to form a first hollow cavity, and a water draining air hole is formed in the side wall of the valve seat, located in the first hollow cavity;
the shell comprises a second hollow cavity and a third hollow cavity separated by a partition plate, one end of the valve seat, provided with the second hollow cavity, is connected with one end of the shell in a sealing way, the first hollow cavity and the second hollow cavity are communicated to form a containing cavity, and a drain pipe passing through hole for communicating the containing cavity is formed in the partition plate; a controller is arranged in the third hollow cavity, and the water level sensor is connected with the controller through a line;
the valve body is arranged in the accommodating cavity and used for opening and closing the water inlet hole and the water drain pipe, the valve body comprises a valve rod penetrating through the accommodating cavity, one end of the valve rod is provided with an air hole sealing piece used for sealing the air inlet hole, the other end of the valve rod is provided with a water drain hole sealing piece used for sealing the water drain pipe, the middle part of the valve rod is provided with a water inlet hole sealing piece used for sealing the water inlet hole, one end, close to the water drain hole sealing piece, of the valve rod is provided with a fixed iron core, the periphery of one end, far away from the water drain hole sealing piece, of the fixed iron core is provided with an electromagnetic coil connected with a controller circuit, a pressure block is arranged on the valve rod below the bell jar, a first spring is arranged on the valve rod and below the pressure block, the water inlet hole sealing piece is arranged on the pressure block and moves up and down along with the valve rod, the valve rod moves up and down under the action of the electromagnetic coil and the fixed iron core, the air hole sealing piece and the water inlet hole sealing piece are in a free state, and the water drain hole sealing piece is in a compressed state, and the water drain valve is opened; the valve rod is reset under the action of the first spring, the air hole sealing piece and the water inlet hole sealing piece are switched to a compressed state, the water discharge hole sealing piece is switched to a free state, and the water discharge valve is closed.
Further, the valve rod comprises a first rod body, a second rod body and a third rod body which are sequentially connected, the air hole sealing element is connected to one end of the first rod body, the drain hole sealing element is connected to the end portion of the third rod body, the pressure bearing block is sleeved on the first rod body, and the first spring is sleeved on the second rod body.
Further, the third rod body comprises a guide rod penetrating through the central hole of the fixed iron core and a limiting rod with the outer diameter larger than that of the guide rod, a gap for controlling the up-and-down movement stroke of the valve rod is formed between the end face of the limiting rod and the end face of the fixed iron core, the drain hole sealing piece is arranged at the end part of the guide rod, and the limiting rod is in threaded connection with the second rod body.
Further, the second body of rod with the one end that the first body of rod is connected is equipped with central blind hole, the pressure-bearing piece is in through setting up the internal thread in the central blind hole with second body of rod threaded connection, the first body of rod passes the pressure-bearing piece stretches into in the central blind hole, and relies on spacing disc of first body of rod tip with the pressure-bearing piece is spacing in the central blind hole, be equipped with in the central blind hole receive spacing disc extruded second spring.
Further, a round bearing platform is arranged at the upper end of the second rod body, and a bearing round platform contacted with the round bearing platform is arranged on the bearing block.
Further, a sealing ring is arranged between the fixed iron core and the electromagnetic coil.
Further, the inner wall of the third hollow cavity is provided with a mounting groove and a threading hole, a controller is arranged in the mounting groove, and a circuit connected with the controller is led out through the threading hole.
The automatic water drain valve of the fuel filter has the beneficial effects that: compared with the prior art, the automatic water drain valve of the fuel filter has the advantages that the water level sensor detects accumulated water in the filter and transmits signals to the controller, the valve rod moves downwards under the action of the electromagnetic coil and the fixed iron core, the air inlet hole and the water inlet hole are opened, the water drain pipe is closed, and accumulated water in the filter is collected in the accommodating cavity; when the water level sensor detects that the accumulated water is in the set range, the signal is transmitted to the controller, the valve rod moves upwards, the air inlet hole and the water inlet hole are sealed, the sealing piece of the water outlet hole is opened, and at the moment, the accumulated water in the valve is ensured to be smoothly discharged from the water outlet pipe due to the fact that the water outlet hole still enters the air. The accommodating cavity has a certain water storage function, and can drain water according to a certain frequency by the water drain valve.
The invention also provides a fuel filter provided with the automatic water drain valve.
The fuel filter provided by the invention has the beneficial effects that: through automatic water drain valve, the ponding of discharging in the filter is gathered in the holding chamber of automatic water drain valve, and according to solenoid's switching frequency automatic drainage reduces the wearing and tearing to spare part, improves spare part's life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an automatic drain valve for a fuel filter according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a front view of an automatic drain valve of a fuel filter according to an embodiment of the present invention;
FIG. 3 is a schematic top view of the automatic drain valve of the fuel filter of FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 3 taken along line A-A with the valve open;
FIG. 5 is a schematic view of the structure of FIG. 3 taken along line A-A with the valve closed;
FIG. 6 is a schematic view of the valve stem of the automatic drain valve of the fuel filter provided in FIG. 4;
FIG. 7 is a schematic view of a valve seat of the automatic drain valve of the fuel filter provided in FIG. 4;
FIG. 8 is a schematic view of a housing of the automatic drain valve of the fuel filter of FIG. 4;
fig. 9 is a schematic diagram II of a housing of the automatic drain valve of the fuel filter provided in fig. 4.
Wherein, each reference sign in the figure:
1-valve seat; 101-a water level sensor; 102-an externally threaded connection; 103-a drainage air hole; 104-an air inlet hole; 105-a water inlet hole; 106, a sealing ring; 107-a first hollow cavity; 108-a bell jar; 2-a housing; 201-mounting slots; 202-a drain pipe; 203-threading holes; 204-a third hollow cavity; 3-a valve body; 301-electromagnetic coils; 302-a skeleton; 303-fixing an iron core; 304-a valve stem; 3041-air hole seal; 3042-inlet port seal; 3043-drain hole seal; 3044-first stick body; 3045-a second stick body; 3046-a third stick body; 3061-a stop bar; 3062-guide bar; 3047-first spring; 3048-a second spring; 305-a second hollow cavity; 306-bearing blocks.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 8, the automatic drain valve of the fuel filter provided by the invention will now be described. The automatic water drain valve of the fuel filter comprises a valve seat 1, a shell 2 and a valve body 3, wherein one end of the valve seat 1 is a water inlet, a bell jar 108 protruding outwards is arranged in the middle of the water inlet, a water level sensor 101 and an air inlet 104 are arranged at the closed end of the bell jar 108, an extension surface extending outwards at the open end of the bell jar 108 is connected with the inner wall of the valve seat 1, a water inlet 105 is arranged on the extension surface, the other end of the valve seat 1 bulges outwards to form a first hollow cavity 107, and a water drain hole 103 is arranged on the side wall of the valve seat 1, which is positioned in the first hollow cavity 107; the shell 2 comprises a second hollow cavity 305 and a third hollow cavity 204 separated by a partition plate, one end of the valve seat 1 provided with the second hollow cavity 305 is connected with one end of the shell 2 in a sealing way, the first hollow cavity 107 and the second hollow cavity 305 are communicated to form a containing cavity, and the partition plate is provided with a drain pipe 202 used for communicating the containing cavity through a through hole; a controller is arranged in the third hollow cavity 204, and the water level sensor 101 is connected with a controller line; the valve body 3 is arranged in the accommodating cavity and is used for opening and closing the water inlet 105 and the water outlet 202, the valve body comprises a valve rod 304 penetrating through the accommodating cavity, one end of the valve rod 304 is provided with a vent sealing piece 3041 for sealing the water inlet 104, the other end of the valve rod 304 is provided with a water outlet sealing piece 3043 for sealing the water outlet 202, the middle part of the valve rod is provided with a water inlet sealing piece 3042 for sealing the water inlet 105, one end of the valve rod 304, which is close to the water outlet sealing piece 3043, is provided with a fixed iron core 303, the periphery of one end of the fixed iron core 303, which is far away from the water outlet sealing piece 3043, is provided with an electromagnetic coil 301 connected with a controller circuit, the valve rod 304 is provided with a pressure block 306 below the bell 108, a first spring 3047 for enabling the valve rod 304 to move towards the valve seat 1 is arranged on the valve rod 304, the water inlet sealing piece 3042 is arranged on the pressure block 306 and moves up and down along with the valve rod 304, the valve rod 304 moves up and down under the action of the electromagnetic coil 301 and the fixed iron core, the valve rod 304 moves down, the vent sealing piece 3041 and the water inlet sealing piece 3042 is in a free state, and the water outlet sealing piece 3042 is in a compressed state; the valve rod 304 is reset by the first spring 3047, the air hole seal 3041 and the water inlet hole seal 3042 are switched to a compressed state, the water discharge hole seal 3043 is switched to a free state, and the water discharge valve is closed.
Compared with the prior art, the automatic water drain valve for the fuel filter provided by the invention has the advantages that the water level sensor 101 detects accumulated water in the filter and transmits a signal to the controller, the valve rod 304 moves downwards under the action of the electromagnetic coil 301 and the fixed iron core 303, the air inlet hole 104 and the water inlet hole 105 are opened, the water drain pipe 202 is closed, accumulated water in the filter is collected into the accommodating cavity, namely the valve is opened, and at the moment, the accommodating cavity is equivalent to a container for accommodating water; when the water level sensor 101 detects that the accumulated water is in the set range, a signal is transmitted to the controller, the valve rod 304 moves upwards to reset under the action of the first spring 3047, the air inlet hole 104 and the water inlet hole 105 are sealed, namely, the valve is closed, the accumulated water in the filter cannot be discharged to the valve, the sealing piece of the water outlet hole is opened, the accumulated water in the accommodating cavity is discharged from the valve, and at the moment, the accumulated water in the valve is ensured to be smoothly discharged from the water outlet pipe 202 due to the fact that the water outlet hole 103 still is filled with air.
Wherein, two water draining air holes 103 are arranged on the side wall of the first hollow cavity 107 of the valve seat 1, and the air in the accommodating cavity can not enter from the air inlet 104 because the air inlet 104 is closed after the valve rod 304 moves upwards, at the moment, the air enters through the water draining air holes 103, and the pressure formed by water accumulated in the cavity is favorable for smooth water draining.
The accommodating cavity has a certain water storage function, and can drain water according to a certain frequency by the water drain valve.
Wherein, an external screw connection end 102 for connecting and installing to a filter is arranged on the valve seat 1, and a sealing ring 106 is arranged on the external screw connection end 102, a filter screen is arranged for filtering the particle impurities discharged from the filter.
Wherein, the link of disk seat 1 and shell 2 also is equipped with sealing washer 106, prevents ponding and reveal.
In addition, the water level sensor 101 is designed for high water level alarm, and can also be added with low water level alarm function and changed into a safer double water level design; the isolation baffle or other design structure with the function can be arranged between the two probes of the water level sensor 101 described in the present document, so as to avoid false alarm.
In addition, a frame 302 for supporting the electromagnetic coil is provided in the accommodation chamber formed by the valve seat and the housing, as shown in fig. 4 and 5.
Referring to fig. 3 to 6 together, as an embodiment of the automatic drain valve for a fuel filter provided by the present invention, the valve rod 304 includes a first rod 3044, a second rod 3045 and a third rod 3046 connected in sequence, the air hole sealing member 3041 is connected to one end of the first rod 3044, the drain hole sealing member 3043 is connected to an end of the third rod 3046, the pressure-bearing block 306 is sleeved on the first rod 3044, and the first spring 3047 is sleeved on the second rod 3045. The terms "first," "second," and the like herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
Referring to fig. 3 to 6, as a specific embodiment of the automatic drain valve for a fuel filter provided by the present invention, the third rod 3046 includes a guide rod 3062 passing through the central hole of the fixed iron core 303 and a limit rod 3061 having an outer diameter larger than that of the guide rod 3062, a gap for controlling the up-and-down movement of the valve rod 304 is formed between the end surface of the limit rod 3061 and the end surface of the fixed iron core 303, a drain hole sealing member 3043 is disposed at the end of the guide rod 3062, and the limit rod 3061 is in threaded connection with the second rod 3045. When the limiting rod 3061 contacts with the end face of the fixed iron core 303, the air inlet hole 104 and the water inlet hole 105 are both opened, the water outlet pipe 202 is closed, and when the limiting rod 3061 leaves the fixed iron core 303 until the air inlet hole 104 is closed by the air hole sealing member 3041, the distance between the limiting rod 3061 and the fixed iron core 303 is maximized.
Referring to fig. 6, as a specific embodiment of the automatic drain valve for a fuel filter provided by the invention, a central blind hole is provided at one end of the second rod 3045 connected with the first rod 3044, the pressure-bearing block 306 is in threaded connection with the second rod 3045 through an internal thread provided in the central blind hole, the first rod 3044 passes through the pressure-bearing block 306 and extends into the central blind hole, and a second spring 3048 extruded by the limiting disc is provided in the central blind hole by virtue of the limiting disc at the end of the first rod 3044 and the pressure-bearing block 306 being limited in the central blind hole. That is, when the valve is opened, the first rod 3044 is forced to move downward, the second spring 3048 is pressed down, the air inlet is opened, and the first rod 3044 moves upward under the action of the elastic force of the second spring 3048, so that the air inlet sealing member moves upward to seal the air inlet, and the valve is closed. During installation, one end of the first rod 3044, which is not provided with a limit disc, passes through the central hole of the pressure-bearing block 306, so that the end face of the limit disc is in contact with the end face of the pressure-bearing block 306, the second spring 3048 is arranged in the central blind hole, the pressure-bearing block 306 is screwed into the central blind hole until the limit disc of the first rod 3044 is in extrusion contact with the second spring 3048, and at the moment, the pressure-bearing block 306 is extruded with the upper end face of the second rod 3045.
Referring to fig. 6, as a specific embodiment of the automatic water drain valve for the fuel filter provided by the invention, a circular bearing platform is arranged at the upper end of the second rod 3045, a bearing round platform contacted with the circular bearing platform is arranged on the bearing block 306, and the limit of the bearing block 306 is realized through the tangency of the circular bearing platform and the bearing round platform. In addition, for ease of description and understanding, references herein to "upper," "lower," "top," "bottom," "inner," "outer," and the like are to be based on the orientation or positional relationship shown in the drawings, and are merely for ease of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. When the valve rod is placed in the accommodating cavity, the first spring 3047 is limited between the lower end face of the circular bearing platform of the second rod body 3045 and the sealing sleeve 4, and can reset and compress no matter in a compressed state when the valve is opened and closed.
Referring to fig. 4 to 5, as a specific embodiment of the automatic drain valve for a fuel filter provided by the present invention, a sealing ring 106 is disposed between a fixed iron core 303 and an electromagnetic coil 301, for preventing water from entering a hollow cavity formed by the electromagnetic coil 301 and a valve rod 304. Herein, the seal rings 106 at different positions are all denoted by 106, so as to reduce the complexity of distinguishing the reference numerals.
Referring to fig. 9, as a specific embodiment of the automatic drain valve for a fuel filter provided by the present invention, an installation groove 201 and a threading hole 203 are provided on an inner wall of a third hollow cavity 204, a controller is provided in the installation groove 201, and a line connected with the controller is led out through the threading hole 203. The controller is herein isolated from the chamber containing the water and the controller and the wiring is protected from moisture, wherein the wiring is routed from outside the housing 2 through the wire holes 203.
The invention also provides a fuel filter provided with the automatic water drain valve.
The fuel filter provided by the invention adopts the automatic water drain valve, accumulated water discharged from the filter is accumulated in the accommodating cavity of the automatic water drain valve, water is automatically drained according to the conversion frequency of the electromagnetic coil 301, the abrasion to parts is reduced, and the service life of the parts is prolonged.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The automatic water drain valve of fuel filter, its characterized in that includes:
the novel water-saving valve comprises a valve seat (1), wherein one end of the valve seat (1) is a water inlet, a bell jar (108) protruding outwards is arranged in the middle of the water inlet, a water level sensor (101) and an air inlet hole (104) are arranged at the closed end of the bell jar (108), an extending surface extending outwards from the open end of the bell jar (108) is connected with the inner wall of the valve seat (1), a water inlet hole (105) is arranged on the extending surface, a first hollow cavity (107) is formed by outwards protruding the other end of the valve seat (1), and a water draining air hole (103) is formed in the side wall of the valve seat (1) located in the first hollow cavity (107);
the shell (2), the shell (2) comprises a second hollow cavity (305) and a third hollow cavity (204) separated by a partition plate, one end of the valve seat (1) provided with the second hollow cavity (305) is connected with one end of the shell (2) in a sealing way, the first hollow cavity (107) and the second hollow cavity (305) are communicated to form a containing cavity, and a through hole for a drain pipe (202) communicated with the containing cavity to pass through is formed in the partition plate; a controller is arranged in the third hollow cavity (204), and the water level sensor (101) is connected with the controller through a line;
a valve body (3) which is arranged in the accommodating cavity and is used for opening and closing the water inlet hole (105) and the water discharging pipe (202), and comprises a valve rod (304) penetrating through the accommodating cavity, wherein one end of the valve rod (304) is provided with an air hole sealing piece (3041) used for blocking the water discharging pipe, the other end of the valve rod is provided with a water discharging hole sealing piece (3043) used for blocking the water inlet hole (105), the middle part of the valve rod is provided with a water inlet hole sealing piece (3042) used for blocking the water inlet hole (105), one end of the valve rod (304) close to the water discharging hole sealing piece (3043) is provided with a fixed iron core (303), the periphery of one end of the fixed iron core (303) far away from the water discharging hole sealing piece (3043) is provided with an electromagnetic coil (301) connected with a controller circuit, a bearing block (306) is arranged below the bell jar (108) on the valve rod (304), a first spring (3047) is arranged below the bearing block (306) on the bearing block (304), the water inlet hole sealing piece (3042) is arranged on the upper valve rod (304), the upper valve rod (304) moves along with the upper valve rod (304) and the lower valve rod (304) in a downward moving state, and the lower valve rod (304) moves downwards, and the lower valve rod (304) moves freely, a drain hole seal (3043) is in a compressed state, the drain valve being open; the valve rod (304) is reset under the action of the first spring (3047), the air hole sealing piece (3041) and the water inlet hole sealing piece (3042) are switched to a compression state, the water discharge hole sealing piece (3043) is switched to a free state, and the water discharge valve is closed;
the valve rod (304) comprises a first rod body (3044), a second rod body (3045) and a third rod body (3046) which are sequentially connected, the air hole sealing piece (3041) is connected to one end of the first rod body (3044), the water draining hole sealing piece (3043) is connected to the end part of the third rod body (3046), the pressure bearing block (306) is sleeved on the first rod body (3044), and the first spring (3047) is sleeved on the second rod body (3045);
the third rod body (3046) comprises a guide rod (3062) penetrating through a central hole of the fixed iron core (303) and a limiting rod (3061) with the outer diameter larger than that of the guide rod (3062), a gap for controlling the up-and-down movement stroke of the valve rod (304) is formed between the end face of the limiting rod (3061) and the end face of the fixed iron core (303), a drain hole sealing piece (3043) is arranged at the end part of the guide rod (3062), and the limiting rod (3061) is in threaded connection with the second rod body (3045);
the one end that second body of rod (3045) with first body of rod (3044) is connected is equipped with central blind hole, pressure block (306) are in through setting up the internal thread in the central blind hole with second body of rod (3045) threaded connection, first body of rod (3044) pass pressure block (306) stretch into in the central blind hole, and rely on spacing disc of first body of rod (3044) tip with pressure block (306) limit is located in the central blind hole, be equipped with in the central blind hole receive spacing disc extruded second spring (3048).
2. The automatic drain valve for a fuel filter of claim 1, wherein: the upper end of the second rod body (3045) is provided with a round bearing platform, and the bearing block (306) is provided with a bearing round platform which is contacted with the round bearing platform.
3. The automatic drain valve for a fuel filter of claim 1, wherein: a sealing ring (106) is arranged between the fixed iron core (303) and the electromagnetic coil (301).
4. The automatic drain valve for a fuel filter of claim 1, wherein: the inner wall of the third hollow cavity (204) is provided with a mounting groove (201) and a threading hole (203), a controller is arranged in the mounting groove (201), and a circuit connected with the controller is led out through the threading hole (203).
5. The fuel filter is characterized in that: an automatic water drain valve according to any one of claims 1-4 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582224.2A CN109488498B (en) | 2018-12-24 | 2018-12-24 | Automatic water drain valve of fuel filter and fuel filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582224.2A CN109488498B (en) | 2018-12-24 | 2018-12-24 | Automatic water drain valve of fuel filter and fuel filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488498A CN109488498A (en) | 2019-03-19 |
| CN109488498B true CN109488498B (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582224.2A Active CN109488498B (en) | 2018-12-24 | 2018-12-24 | Automatic water drain valve of fuel filter and fuel filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN109488498B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109676B (en) * | 2021-11-25 | 2023-03-07 | 上海弗列加滤清器有限公司 | Self-draining module, fuel filter and vehicle |
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| DE102011120647A1 (en) * | 2011-12-09 | 2013-06-13 | Mann + Hummel Gmbh | Fuel filter of an internal combustion engine and filter element of a fuel filter |
| CN103216367A (en) * | 2012-01-19 | 2013-07-24 | 派克汉尼汾过滤系统(上海)有限公司 | Fuel filter integrating automatic water drain valve |
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| CN209369972U (en) * | 2018-12-24 | 2019-09-10 | 河北中瓷电子科技股份有限公司 | Fuel filter automatic drain valve and fuel filter |
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| DE102004063015A1 (en) * | 2004-12-22 | 2006-07-13 | Mann + Hummel Gmbh | Fuel filter |
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| CN109488498A (en) | 2019-03-19 |
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