CN208935348U - A kind of construction machinery gear box solenoid valve external filter - Google Patents
A kind of construction machinery gear box solenoid valve external filter Download PDFInfo
- Publication number
- CN208935348U CN208935348U CN201821617306.1U CN201821617306U CN208935348U CN 208935348 U CN208935348 U CN 208935348U CN 201821617306 U CN201821617306 U CN 201821617306U CN 208935348 U CN208935348 U CN 208935348U
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- Prior art keywords
- attachment base
- filter
- solenoid valve
- fuel feed
- shell
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Abstract
The utility model discloses a kind of construction machinery gear box solenoid valve external filters, including attachment base, check valve, sealing ring, filter element part, shell, the attachment base is connected to each other with shell, and filter element part is arranged on attachment base, the space interior formed positioned at attachment base and shell；The attachment base is cylindrical shape, and attachment base and solenoid valve body connecting pin are flange arrangement, and flange surface is equipped with sealing ring and solenoid valve body realizes end face seal, and flange center is equipped with fuel feed hole, the oil inlet connection of fuel feed hole and filter element part；Oil outlet is equipped in the side of fuel feed hole；The filter element part includes upper end cover, central tube protective net, filter paper, lower cover and by-passing valve；The shell is connected through a screw thread with attachment base, and shell tail portion is equipped with hexagonal structure.Compact-sized, the easy maintenance of the utility model integrates high efficiency filter, anti-oil return, overload protection, and filter core is interchangeable, substantially reduces the use cost of unit replacement, meets requirement.
Description
Technical field
The utility model belongs to filtration art, in particular to a kind of construction machinery gear box solenoid valve external mistake
Filter.
Background technique
Currently, the typically no dedicated filter of construction machinery gear box solenoid valve, filtered solution is in pipeline
A circular metal mesh sheet is put in inside, and filtering accuracy can not achieve the high efficiency filter to fine impurity at 140 μm or so,
It is far from being to solenoid valve effective protection.According to investigations, damaging biggish particle to solenoid movement part film lubrication at present is 10-15
μm, if filtered with the mode for promoting metal mesh sheet mesh number, because of the limitation of area, resistance is increased too after filtering accuracy is promoted
It is more and cause oil liquid that cannot pass through, it is necessary to redesign a kind of dedicated external filter to realize to construction machinery gear box
The effective protection of solenoid valve.
The service pressure 1.5-2.0MPa of gearbox gear wheel pump, the work of traditional spin-on filter of internal combustion engine
Pressure is generally 0.6-0.7MPa, is far from satisfying requirement, it is therefore necessary to rethink the structural shape of filter, it is simultaneous
Solenoid valve small volume is cared for, using the previous built-in filter net sheet of the outlet structure substitution of filtration package.
Utility model content
To solve the above-mentioned problems in the prior art, the purpose of the utility model is to provide a kind of engineering machinery speed changes
Case solenoid valve external filter, to realize higher filter efficiency.
To achieve the above object, specific technical solution is as follows:
A kind of construction machinery gear box solenoid valve external filter, including attachment base, check valve, sealing ring, filter core
Component, shell, the attachment base are connected to each other with shell, and filter element part is arranged on attachment base, are located at attachment base and shell shape
At space interior.
The attachment base is cylindrical shape, and attachment base and solenoid valve body connecting pin are flange arrangement, and flange both ends are equipped with peace
Hole is filled, flange surface is equipped with sealing ring and solenoid valve body realizes end face seal, and flange center is equipped with fuel feed hole, sets in fuel feed hole
There is check valve to guarantee unidirectional oil inlet, the oil inlet connection of fuel feed hole and filter element part；It is equipped with oil outlet in the side of fuel feed hole, out
Unidirectional fuel-displaced equipped with check valve guarantee in oilhole, the inner cavity of oil outlet and attachment base, the exterior space of filter element part keep connection；
Filter interior oil liquid is not lost when check valve may be implemented to shut down, then maintains oil in oil duct to shut out when the oil pump that is switched on just starts
Over dry friction, and there will not be oil liquid outflow pollution environment when integral demounting maintenance.
The filter element part includes upper end cover, central tube protective net, filter paper, lower cover and by-passing valve, the oil inlet of upper end cover
Hold close-fitting at the fuel feed hole inside attachment base, the oil inlet outer surface of upper end cover is equipped with fuel feed hole sealing ring and fuel feed hole inner wall
It realizes radial seal, a circle filter paper is equipped between upper end cover and lower cover, filter paper periphery is equipped with central tube protective net, and center is managed and protected
Net, filter paper both ends fixed between upper end cover, lower cover with glue sticking respectively, the bottom centre of lower cover is equipped with aperture, right
Answer tapping be equipped with by-passing valve, when filter core be blocked or be just switched on be cold-started when lubricating oil viscosity it is higher cause filter core inside and outside differential pressure increase
Greatly, when pressure reaches setting opening point, by-passing valve, which can be opened, keeps oil duct internal oil unimpeded, avoids dry friction to movement
Part causes to damage；
Further, the filter paper be the star-like foldable filter element of papery, filter type from inside to outside, using efficient industrial filter
Material, 10-15 μm of filtering accuracy.
Further, the shell is connected through a screw thread with attachment base, and it is close that the two connection surface is equipped with the realization of housing seal circle
Envelope.
Further, the shell tail portion is equipped with hexagonal structure, facilitates user to dismount shell, maintains filter element part.
The beneficial effects of the utility model are: the utility model is compact-sized, easy maintenance, collection high efficiency filter, anti-oil return,
Overload protection is in one, and filter core is interchangeable, substantially reduces the use cost of unit replacement, and six sides of shell tail portion design have more people
Property, facilitate user's demolition and maintenance to maintain.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of construction machinery gear box solenoid valve external filter of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the right view of Fig. 1.
In figure: 1- attachment base, 11- fuel feed hole, 12- oil outlet, 13- sealing ring, 2- check valve, 3- filter element part, 31- into
Oilhole sealing ring, 32- upper end cover, 33- central tube protective net, 34- housing seal circle, 35- filter paper, 36- lower cover, 37- by-passing valve,
4- shell, six side of the tail portion 41-.
Specific embodiment
With reference to the accompanying drawings of the specification and specific embodiment, the utility model is described in further detail.
Referring to Fig. 1, a kind of construction machinery gear box solenoid valve external filter, including it is attachment base 1, check valve 2, close
Seal 13, filter element part 3, shell 4, the attachment base 1 are connected to each other with shell 4, and filter element part 3 is arranged on attachment base 1, position
In the space interior that attachment base 1 and shell 4 are formed.
As shown in Figure 1 and Figure 2, the attachment base 1 is cylindrical shape, and attachment base 1 and solenoid valve body connecting pin are flange knot
Structure, flange both ends are equipped with mounting hole, and flange surface is equipped with sealing ring 13 and solenoid valve body realizes end face seal, and flange center sets
There is fuel feed hole 11, is equipped with check valve 2 in fuel feed hole 11 and guarantees unidirectional oil inlet, the oil inlet connection of fuel feed hole 11 and filter element part 3；
Be equipped with oil outlet 12 in the side of fuel feed hole 11, be equipped in oil outlet 12 check valve 2 guarantee it is unidirectional fuel-displaced, oil outlet 12 with connect
The inner cavity of seat 1, the exterior space of filter element part 3 keep connection.
The filter element part 3 includes upper end cover 32, central tube protective net 33, filter paper 35, lower cover 36 and by-passing valve 37, upper end
For the oil inlet end close-fitting of lid 32 at the fuel feed hole 11 inside attachment base 1, the oil inlet outer surface of upper end cover 32 is equipped with fuel feed hole
Sealing ring 31 and 11 inner wall of fuel feed hole realize radial seal, and a circle filter paper 35, filter paper are equipped between upper end cover 31 and lower cover 36
35 periphery be equipped with central tube protective net 33, central tube protective net 33, filter paper 35 both ends used between upper end cover 31, lower cover 36 respectively
Glue sticking is fixed, and the bottom centre of lower cover 36 is equipped with aperture, and corresponding tapping is equipped with by-passing valve 37.
The filter paper 35 is the star-like foldable filter element of papery, filter type from inside to outside, using efficient industrial filter material,
10-15 μm of filtering accuracy.
The shell 4 is threadedly screwed on attachment base 1, and the connection surface of the two is realized equipped with housing seal circle 34
Sealing.
As shown in Figure 1, Figure 3,4 bottom of shell is equipped with six side of tail portion, 41 structure.
Workflow:
The attachment base 1 of external filter is fixed by bolts on solenoid valve body；Start oil pump, gear oil opens company
The check valve 2 of 1 center fuel feed hole 11 of joint chair enters inside filter element part 3；It is intercepted in lower oil liquid by the micro porous filtration of filter paper 35
Impurity, cleansing oil flows out filter element part 3, in the cavity for flowing to attachment base 1；The check valve 2 at oil outlet 12 is opened again, it will be clear
Oil liquid after clean imports solenoid valve gear-box.
As filter element part 3 uses overlong time, covers the impurity in 35 surface of filter paper and inside and constantly accumulate, filter core portion
3 inside and outside differential pressure of part is gradually increased, and when pressure difference increases to setting value, the by-passing valve 37 of 3 bottom of filter element part can be opened, and oil liquid is not
It filters through filter paper 35, and is flowed directly out by the bottom of filter element part 3.
Shell 4 is dismantled by six side 41 of tail portion of 4 exterior design of shell, carries out maintenance, replacement filter element part 3.
For above embodiments, part-structure can be carried out according to the particular/special requirement of user and parameter adjusts, such as: filter core mistake
Filter requirement, the bypass setting of valve opening pressure, the shape of ring flange, shell dismounting specification of six side of tail portion etc. of efficiency.
It is all according to some variations made by the content of the present invention and to repair as described above, the utility model can be realized preferably
Decorations, are all covered by the utility model claims range claimed.
Claims (4)
1. a kind of construction machinery gear box solenoid valve external filter, it is characterised in that: including attachment base, check valve, close
Seal, filter element part, shell, the attachment base are connected to each other with shell, and filter element part is arranged on attachment base, are located at attachment base
The space interior formed with shell；
The attachment base is cylindrical shape, and attachment base and solenoid valve body connecting pin are flange arrangement, and flange both ends are equipped with mounting hole,
Flange surface is equipped with sealing ring and solenoid valve body realizes end face seal, and flange center is equipped with fuel feed hole, is equipped in fuel feed hole single
To valve, the oil inlet connection of fuel feed hole and filter element part；It is equipped with oil outlet in the side of fuel feed hole, is equipped in oil outlet unidirectional
The inner cavity of valve, oil outlet and attachment base, the exterior space of filter element part keep connection；
The filter element part includes upper end cover, central tube protective net, filter paper, lower cover and by-passing valve, and the oil inlet end of upper end cover is tight
It fits at the fuel feed hole inside attachment base, the oil inlet outer surface of upper end cover is equipped with fuel feed hole sealing ring and fuel feed hole inner wall is realized
Radial seal, is equipped with a circle filter paper between upper end cover and lower cover, filter paper periphery is equipped with central tube protective net, central tube protective net, filter
The both ends of paper are fixed between upper end cover, lower cover with glue sticking respectively, and the bottom centre of lower cover is equipped with aperture, corresponding aperture
Place is equipped with by-passing valve.
2. a kind of construction machinery gear box solenoid valve external filter according to claim 1, it is characterised in that: institute
State filter paper be the star-like foldable filter element of papery, filter type from inside to outside, 10-15 μm of filtering accuracy.
3. a kind of construction machinery gear box solenoid valve external filter according to claim 1, it is characterised in that: institute
It states shell and is threadedly screwed on attachment base, the connection surface of the two is equipped with housing seal circle and realizes sealing.
4. a kind of construction machinery gear box solenoid valve external filter according to claim 1 or 3, feature exist
In: the housing bottom is equipped with tail portion hexagonal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821617306.1U CN208935348U (en) | 2018-09-30 | 2018-09-30 | A kind of construction machinery gear box solenoid valve external filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821617306.1U CN208935348U (en) | 2018-09-30 | 2018-09-30 | A kind of construction machinery gear box solenoid valve external filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935348U true CN208935348U (en) | 2019-06-04 |
Family
ID=66723429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821617306.1U Active CN208935348U (en) | 2018-09-30 | 2018-09-30 | A kind of construction machinery gear box solenoid valve external filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980327A (en) * | 2018-09-30 | 2018-12-11 | 蚌埠国威滤清器有限公司 | A kind of construction machinery gear box solenoid valve external filter |
-
2018
- 2018-09-30 CN CN201821617306.1U patent/CN208935348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980327A (en) * | 2018-09-30 | 2018-12-11 | 蚌埠国威滤清器有限公司 | A kind of construction machinery gear box solenoid valve external filter |
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