CN209444480U - A kind of fuel filter, fuel filter assembly and engine assembly - Google Patents
A kind of fuel filter, fuel filter assembly and engine assembly Download PDFInfo
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- CN209444480U CN209444480U CN201920002263.4U CN201920002263U CN209444480U CN 209444480 U CN209444480 U CN 209444480U CN 201920002263 U CN201920002263 U CN 201920002263U CN 209444480 U CN209444480 U CN 209444480U
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Abstract
The utility model specifically discloses a kind of fuel filter, fuel filter assembly and engine assembly, fuel filter includes shell, and shell is equipped with filter chamber, oil inlet and oil outlet, and oil inlet is connected to filter chamber；Filter core, filter core are mounted in filter chamber；Central tube is at least partly plugged in filter core, is internally provided with oil drain passage, the closure of one end of the oil drain passage and other end is equipped with oil discharge outlet, and oil discharge outlet be connected to oil outlet, and central tube is equipped with the oil extraction through-hole for being connected to filter chamber and oil drain passage；Piston is slidably disposed in oil drain passage, and oil drain passage is divided into the first chamber and the second chamber, and oil discharge outlet is located at one end of the first chamber, and oil extraction through-hole is only connected to the first chamber；Elastic component can drive piston to move to close to oil discharge outlet direction.After engine is shut down, filter cavity pressure is reduced, and the air in fuel oil is precipitated and accumulates in inside filter, and elastic component driving piston is moved to oil discharge outlet side, can be squeezed out the air of precipitation, be achieved the purpose that exhaust.
Description
Technical field
The utility model relates to engine assembly technical field more particularly to a kind of fuel filter, fuel filter are total
At and engine assembly.
Background technique
Fuel filter is the important spare part on engine, provides clean fuel oil for fuel system.When engine operation,
Air pocket in fuel pipe must be excluded.
The method being vented at present is that bleed screw is equipped on filter seat, unscrews bleed screw with spanner, and press
The air in fuel filter could be discharged by electrodynamic pump for handlance.This exhaust structure operation is very inconvenient,
Operating efficiency is very low, extends engine and is again started up the time, and repeat to turn bleed screw, is easily damaged filter spiral
Line causes fuel filter assembly to be scrapped.
Utility model content
The purpose of this utility model is that: a kind of fuel filter is provided, is arranged with solving fuel filter in the prior art
Gas structure operation is very inconvenient, and operating efficiency is very low, extends the problem of engine is again started up the time.
The utility model provides a kind of fuel filter, comprising:
Shell, is equipped with filter chamber in the shell, and the shell is equipped with oil inlet and oil outlet, the oil inlet with it is described
Filter chamber connection；
Filter core, the filter core are mounted in the filter chamber；
Central tube is at least partly plugged in the filter core, and the inside of the central tube is equipped with oil drain passage, the row
The one end in oily channel blocks and the other end is equipped with oil discharge outlet, and the oil discharge outlet is connected to the oil outlet, and the central tube is located at
Side wall in the filter core is equipped with oil extraction through-hole, and the oil extraction through-hole is connected to the filter chamber and the oil drain passage；
Piston is slidably disposed in the oil drain passage, and the oil drain passage is divided into the first chamber and the second chamber, the row
Hydraulic fluid port is set to one end of first chamber, and the oil extraction through-hole is only connected to first chamber；
Elastic component can drive the piston to close to oil discharge outlet direction movement.
Preferably, the elastic component is pressure spring, it is intracavitary that the pressure spring is located at described second, and one end of the pressure spring is supported
Tightly in the piston, the other end is pushed against in the bottom wall of second chamber.
Preferably, the internal diameter of the filter chamber is greater than the outer diameter of the filter core.
Preferably, the filter core is filter paper.
Preferably, multiple oil extraction through-holes are arranged at intervals at the outer peripheral surface of the central tube.
Preferably, the shell includes end cap and the shell that connect with the end cap, the filter chamber is set to described outer
Shell, the end cap close the filter chamber, and the oil inlet and the oil outlet are all set on the end cap.
Preferably, the shell further includes connecting tube, the connecting tube is arranged on the end cap, the connecting tube
One end is plugged in the filter core and is connected to the oil discharge outlet, and the oil outlet is set to the other end of the connecting tube, and position
In outside the filter chamber.
On the other hand, the utility model also provides a kind of fuel filter assembly, including described in any above scheme
Fuel filter further includes filter block, and the fuel filter is sealingly mounted on the filter block, and the filter block is equipped with and oil inlet
The oil suction chamber of mouth connection, and the oil outlet chamber being connected to oil outlet.
Preferably, further including exhaust bolt, the filter block is equipped with the threaded hole for being connected to the oil outlet chamber, the exhaust
Screw is bolted in the threaded hole and seals the threaded hole.
In another aspect, the utility model also provides a kind of engine assembly, including the fuel cleaning in any above scheme
Device assembly, oil suction chamber are connect with fuel tank, the combustion chamber connection of oil outlet chamber and engine.
The utility model has the following beneficial effects:
Piston is set in the oil drain passage of central tube, and piston can be driven to transport to oil discharge outlet side by elastic component
It is dynamic, thus when the engine operates, fuel filter fuel pressure is larger, and piston is forced into the bottom of the second chamber, fuel oil warp
Oil outlet flowing in combustion chamber；After engine is shut down, fuel pressure is reduced, and the air in fuel oil is precipitated and accumulates in fuel filter
Inside, the piston of elastic component driving at this time are moved to oil discharge outlet side,, can in piston moving process until pressure reaches balance
The air being precipitated in fuel filter is squeezed out, achievees the purpose that exhaust, when engine is again started up, fuel oil can be quickly filled with
Fuel filter shortens the starting time, and easy to operate, and exhaust efficiency is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of the utility model embodiment intermediate fuel oil filter and filter block；
Fig. 2 is the structural schematic diagram two of the utility model embodiment intermediate fuel oil filter and filter block.
In figure:
1, shell；11, end cap；111, oil inlet；12, shell；121, filter chamber；13, connecting tube；131, oil outlet；
2, filter core；
3, central tube；31, the first chamber；32, the second chamber；33, oil extraction through-hole；
4, piston；
5, elastic component；
6, filter block；
7, exhaust bolt.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Fig. 1~2, the present embodiment provides a kind of fuel filter, the fuel filter include shell 1, filter core 2,
Central tube 3, piston 4 and elastic component 5.Filter chamber 121 is equipped in shell 1, shell 1 is equipped with oil inlet 111 and oil outlet 131, into
Hydraulic fluid port 111 connects fuel tank and filter chamber 121, oil outlet 131 for being connected with the combustion chamber of engine, unfiltered fuel oil can from into
Hydraulic fluid port 111 enters in filter chamber 121.Filter core 2 is mounted in filter chamber 121, for being filtered to fuel oil therethrough.Central tube
3 inside is equipped with oil drain passage, the closure of one end of the oil drain passage and other end is equipped with oil discharge outlet, oil discharge outlet and oil outlet 131
Connection, central tube 3 is at least partly plugged in filter core 2 and central tube 3 is located at the side wall of 2 inner part of filter core and leads to equipped with oil extraction
Hole 33, oil extraction through-hole 33 are connected to filter chamber 121 and oil drain passage, so that the fuel oil in filter chamber 121 only can after the filtering of filter core 2
Oil drain passage is entered from oil extraction through-hole 33, and is finally discharged from oil discharge outlet.Piston 4 is slidably disposed in oil drain passage, and will row
Oily channel is divided into the first chamber 31 and the second chamber 32, and oil discharge outlet is set to one end of the first chamber 31, and oil extraction through-hole 33 only with the first chamber
31 connections；Elastic component 5 can drive piston 4 to close to the movement of oil discharge outlet direction.It is understood that as piston 4 is in oil extraction
It is slided in channel, the volume of the first chamber 31 and the second chamber 32 is shifting.
In the present embodiment, when engine work, as shown in Figure 1, fuel filter fuel pressure is larger, and living
Plug 4 is forced into the bottom of the second chamber 32, and fuel oil is successively through 131 flowing in combustion chamber of oil discharge outlet and oil outlet；After engine is shut down, such as
Shown in Fig. 2, fuel pressure is reduced, and the air in fuel oil is precipitated and accumulates in inside fuel filter, and the driving of elastic component 5 at this time is lived
Plug 4 move to oil discharge outlet side, until pressure reaches balance, during piston 4 moves, can will be precipitated in fuel filter
Air squeeze out.Achieve the purpose that exhaust, when engine is again started up, fuel oil can quickly fill with fuel filter, and shortening is opened
The dynamic time.
Specifically, elastic component 5 is pressure spring, and pressure spring is located in the second chamber 32, and one end of pressure spring is pushed against in piston 4, another
End is pushed against in the bottom wall of the second chamber 32.In other examples, elastic component 5 or tension spring, tension spring are set to the first chamber
In 31.
Shell 1 includes end cap 11 and the shell 12 connecting with end cap 11, and filter chamber 121 is set in shell 12, and filter chamber
121 one end is provided with opening, and end cap 11 will be connect with shell 12, and filter chamber 121 is open closed at one end, oil inlet
111 and oil outlet 131 be all set on end cap 11.Specifically, shell 1 further includes connecting tube 13, and connecting tube 13 is arranged in end cap
On 11, in the present embodiment, central tube 3 is all plugged in filter core 2, and one end of connecting tube 13 is plugged in filter core 2 and and oil discharge outlet
Connection, oil outlet 131 is set to the other end of connecting tube 13, and is located at outside filter chamber 121.The outer surface of connecting tube 13 is equipped with outer spiral shell
Line is used to be threadedly engaged with filter block 6.
In the present embodiment, the outer diameter of filter chamber 121 is greater than the outer diameter of filter core 2.Filter core 2 is filter paper, or felt or height
Molecular material.
The quantity of oil extraction through-hole 33 be it is multiple, multiple outages are arranged at intervals at the outer peripheral surface of central tube 3.
The present embodiment also provides a kind of fuel filter assembly, further includes filter including the fuel filter in above scheme
Seat 6, fuel filter is sealingly mounted on filter block 6, and filter block 6 is equipped with the oil suction chamber being connected to oil inlet 111, and and oil outlet
The oil outlet chamber of 131 connections, oil suction chamber with fuel tank for connecting, and oil outlet chamber with the combustion chamber of engine for connecting.
Specifically, one end of oil outlet chamber is equipped with internal screw thread, which can match with the external screw thread screw thread in connecting tube 13
Conjunction, realization connecting tube 13 and filter block 6 are threadedly engaged.It is additionally provided with seal groove on end cap 11, sealing ring is equipped in seal groove, along even
The axis direction of adapter tube 13, sealing ring is between filter block 6 and end cap 11, and when screwing connecting tube 13, end cap 11 is by sealing ring pressure
Tightly on filter block 6, the sealed connection of fuel filter and filter block 6 is realized.
Fuel filter assembly further includes exhaust bolt 7, and filter block 6 is equipped with the threaded hole of connection oil outlet chamber, exhaust bolt 7
It is bolted in threaded hole and seals threaded hole.When engine is shut down, exhaust bolt 7 is unscrewed, it is same to can be achieved fuel cleaning
The function of air discharge in device, and exhaust bolt 7 and piston 4 constitute redundancy backup.
The present embodiment also mentions a kind of engine assembly, including the fuel filter assembly in above scheme.
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (10)
1. a kind of fuel filter characterized by comprising
Shell (1), the shell (1) is interior to be equipped with filter chamber (121), and the shell (1) is equipped with oil inlet (111) and oil outlet
(131), the oil inlet (111) is connected to the filter chamber (121)；
Filter core (2), the filter core (2) are mounted in the filter chamber (121)；
Central tube (3) is at least partly plugged in the filter core (2), and the inside of the central tube (3) is equipped with oil drain passage,
One end of the oil drain passage blocks and the other end is equipped with oil discharge outlet, and the oil discharge outlet is connected to the oil outlet (131), described
Central tube (3) is located at the side wall in the filter core (2) equipped with oil extraction through-hole (33), and the oil extraction through-hole (33) is connected to the filter
Chamber (121) and the oil drain passage；
Piston (4), is slidably disposed in the oil drain passage, and the oil drain passage is divided into the first chamber (31) and the second chamber
(32), the oil discharge outlet be set to first chamber (31) one end, and the oil extraction through-hole (33) only with first chamber (31)
Connection；
Elastic component (5) can drive the piston (4) to close to oil discharge outlet direction movement.
2. fuel filter according to claim 1, which is characterized in that the elastic component (5) is pressure spring, the pressure spring position
In second chamber (32), and one end of the pressure spring is pushed against in the piston (4), and the other end is pushed against in second chamber
(32) bottom wall.
3. fuel filter according to claim 1, which is characterized in that the outer diameter of the filter chamber (121) is greater than the filter
The outer diameter of core (2).
4. fuel filter according to claim 1, which is characterized in that the filter core (2) is filter paper.
5. fuel filter according to claim 1, which is characterized in that multiple oil extraction through-holes (33) are arranged at intervals at
The outer peripheral surface of the central tube (3).
6. fuel filter according to claim 1, which is characterized in that the shell (1) include end cap (11) and with institute
The shell (12) of end cap (11) connection is stated, the filter chamber (121) is set in the shell (12), and the end cap (11) will be described
Filter chamber (121) closing, the oil inlet (111) and the oil outlet (131) are all set on the end cap (11).
7. fuel filter according to claim 6, which is characterized in that the shell (1) further includes connecting tube (13), institute
Connecting tube (13) is stated to be arranged on the end cap (11), one end of the connecting tube (13) be plugged in the filter core (2) and with institute
Oil discharge outlet connection is stated, the oil outlet (131) is set to the other end of the connecting tube (13), and is located at the filter chamber (121)
Outside.
8. a kind of fuel filter assembly, which is characterized in that including the described in any item fuel filters of claim 1-7, also
Including filter block (6), the fuel filter is sealingly mounted on the filter block (6), and the filter block (6) is equipped with and oil inlet
(111) oil suction chamber being connected to, and the oil outlet chamber being connected to oil outlet (131).
9. fuel filter assembly according to claim 8, which is characterized in that further include exhaust bolt (7), the filter block
(6) it is equipped with the threaded hole for being connected to the oil outlet chamber, the exhaust bolt (7) is bolted in the threaded hole and by the threaded hole
Sealing.
10. a kind of engine assembly, which is characterized in that including fuel filter assembly, oil suction chamber described in claim 8 or 9
It is connect with fuel tank, the combustion chamber connection of oil outlet chamber and engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002263.4U CN209444480U (en) | 2019-01-02 | 2019-01-02 | A kind of fuel filter, fuel filter assembly and engine assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920002263.4U CN209444480U (en) | 2019-01-02 | 2019-01-02 | A kind of fuel filter, fuel filter assembly and engine assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209444480U true CN209444480U (en) | 2019-09-27 |
Family
ID=68015973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920002263.4U Active CN209444480U (en) | 2019-01-02 | 2019-01-02 | A kind of fuel filter, fuel filter assembly and engine assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209444480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116220979A (en) * | 2023-03-15 | 2023-06-06 | 一汽解放汽车有限公司 | Fuel filter and vehicle |
| CN117386542A (en) * | 2023-10-16 | 2024-01-12 | 石家庄艾瑞机电设备股份有限公司 | Fuel pump for explosion-proof engine |
-
2019
- 2019-01-02 CN CN201920002263.4U patent/CN209444480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116220979A (en) * | 2023-03-15 | 2023-06-06 | 一汽解放汽车有限公司 | Fuel filter and vehicle |
| CN117386542A (en) * | 2023-10-16 | 2024-01-12 | 石家庄艾瑞机电设备股份有限公司 | Fuel pump for explosion-proof engine |
| CN117386542B (en) * | 2023-10-16 | 2024-05-28 | 石家庄艾瑞机电设备股份有限公司 | Fuel pump for explosion-proof engine |
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| GR01 | Patent grant |