CN204985183U - Be suitable for hydraulic system's oil filter - Google Patents
Be suitable for hydraulic system's oil filter Download PDFInfo
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- CN204985183U CN204985183U CN201520759094.0U CN201520759094U CN204985183U CN 204985183 U CN204985183 U CN 204985183U CN 201520759094 U CN201520759094 U CN 201520759094U CN 204985183 U CN204985183 U CN 204985183U
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Abstract
The utility model discloses a be suitable for hydraulic system's oil filter, including last casing, lower casing, bypass valve, filter core, end cap and first spring, the inside of going up the casing has oil inlet, oil -out, first cavity, second cavity and third cavity, oil -out and both intercommunications adjacent with first cavity, oil inlet and both intercommunications adjacent with the second cavity, third cavity and first cavity and second cavity intercommunication, in the open end of casing inserts the third cavity down, just be threaded connection with last casing, the bypass valve sets up in the internal first cavity of epitheca, the filter core sets up in inferior valve internal chamber, in the screw hole that blind end that the end cap inserted down the casing was established, and be threaded connection with casing down, first spring sets up in inferior valve internal chamber, and presss from both sides between end cap and filter core. The utility model discloses be suitable for hydraulic system's oil filter, good to the filter effect of hydraulic oil, filter fineness is high, and more the renew cartridge is convenient, but also has characteristics such as dual pressure protection measure.
Description
Technical field
The utility model belongs to liquid filtering technical field, and specifically, the utility model relates to a kind of oil purifier being suitable for hydraulic system.
Background technique
The Main Function of Oil Filter in Hydraulic System filters fluid, inevitably various impurity is there is in hydraulic system, its source mainly contains: still remain in the mechanical admixture in hydraulic system after cleaning, as scale, casting sand, welding slag, iron filings, coating, paint skin and cotton yarn bits etc., outside enters the impurity of hydraulic system, as the dust entered through the place such as oil filler and dust ring; The impurity that working procedure produces, as the fragment that Sealing is formed by hydraulic pressure, the metallic dust that relative wear produces is made in motion, the colloid that fluid produces because of oxidation deterioration, asphalitine, breeze etc.After above-mentioned impurity is mixed into hydraulic oil, along with the ringing of hydraulic oil, destruction will be played everywhere, have a strong impact on the normal work of hydraulic system, as made very small―gap suture and throttling pore in hydraulic element between relative movement part and gap is stuck or blocking; Destroy the oil film between relative movement part, scratch clearance surface, increase internal leakage, lower efficiency, increase heating, the chemical action of aggravation fluid, makes oil deteriorate.According to production leadtime, more than 75% of the fault in hydraulic system causes owing to being mixed into impurity in hydraulic oil, and therefore safeguard the clean of fluid, preventing the pollution of fluid, is very important to hydraulic system.
Model utility content
The utility model provides a kind of oil purifier being suitable for hydraulic system, and object improves the filtering effect to hydraulic oil.
To achieve these goals, the technological scheme that the utility model is taked is: the oil purifier being suitable for hydraulic system, comprising:
Upper shell, its inside has filler opening, oil outlet, the first cavity, the second cavity and the 3rd cavity; Oil outlet adjacent with the first cavity and both be communicated with, filler opening adjacent with the second cavity and both be communicated with, the 3rd cavity is communicated with the second cavity with the first cavity;
Lower shell body, its opening end inserts in the 3rd cavity, and with upper shell for being threaded;
Bypass valve, it is arranged in the first cavity;
Filter core, it is arranged in lower housing cavity;
Plug, it inserts in the tapped hole set by closed end of lower shell body, and with lower shell body for being threaded; And
First spring, it is arranged in lower housing cavity, and is clipped between plug and filter core.
Described first cavity, the second cavity, filler opening and oil outlet are located along the same line, and the first cavity and the second cavity are between oil outlet and filler opening.
Described bypass valve comprises:
Spool, it has with described upper shell is the large footpath section that is threaded and is connected with section one end, large footpath and inserts the path section in described first cavity, and large footpath section has the relief hole be communicated with described second cavity;
Metallic shim, it is sheathed in path section;
Sealing gasket, it is clipped between metallic shim and large footpath section, and for closed relief hole;
Second spring, it is sheathed in path section, and for applying pressure to metallic shim.
Described relief hole is circumferentially evenly equipped with multiple in the section of described large footpath.
The oil purifier being suitable for hydraulic system also comprises and being arranged on described upper shell and the differential pressure transmitter device be positioned at outside upper shell.
Described upper shell has two intercommunicating pores being respectively used to be communicated with described differential pressure transmitter device and described first cavity and the second cavity.
The utility model is suitable for the oil purifier of hydraulic system, and to the good filtration effect of hydraulic oil, filter precision is high, and more renew cartridge is convenient, but also has the features such as dual-pressure protective measure.
Accompanying drawing explanation
This specification comprises the following drawings, shown content respectively:
Fig. 1 is the structural representation of the utility model oil purifier;
Fig. 2 is the sectional view of upper shell;
Fig. 3 is the structural representation of bypass valve;
Be labeled as in figure:
1, differential pressure transmitter device; 2, upper shell; 21, the first cavity; 22, the second cavity; 23, the 3rd cavity; 24, filler opening; 25, oil outlet; 26, intercommunicating pore; 27, attachment face; 28, boss; 29, internal thread; 3, bypass valve; 31, nut; 32, the second spring; 33, metallic shim; 34, sealing gasket; 35, large footpath section; 36, path section; 37, relief hole; 4, lower shell body; 5, filter core; 6, the first spring; 7, plug; 8, seal ring.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, be described in further detail embodiment of the present utility model, object helps those skilled in the art to have more complete, accurate and deep understanding to design of the present utility model, technological scheme, and contribute to its enforcement.
As shown in Figure 1 to Figure 3, the utility model provides a kind of oil purifier being suitable for hydraulic system, comprises upper shell 2, lower shell body 4, bypass valve 3, filter core 5, plug 7 and the first spring 6; The inside of upper shell 2 has filler opening 24, oil outlet 25, first cavity 21, second cavity 22 and the 3rd cavity 23; Oil outlet 25 adjacent with the first cavity 21 and both be communicated with, filler opening 24 adjacent with the second cavity 22 and both be communicated with, the 3rd cavity 23 is communicated with the second cavity 22 with the first cavity 21; The opening end of lower shell body 4 inserts in the 3rd cavity 23, and with upper shell 2 for being threaded; Bypass valve 3 is arranged in the first cavity 21 in upper shell 2; Filter core 5 is arranged in lower shell body 4 inner chamber; Plug 7 inserts in the tapped hole set by closed end of lower shell body 4, and with lower shell body 4 for being threaded; First spring 6 is arranged in lower shell body 4 inner chamber, and be clipped between plug 7 and filter core 5.
Specifically, as shown in Figure 1, upper shell 2 is as the installation matrix of oil purifier remaining parts, and it is have opening and the shell construction of inner hollow at three ends.Lower shell body 4 is one end open, the other end is closed and the shell construction of inner hollow, and upper shell 2 and lower shell body 4 adopt wall thickness 6mm casting structure, and this oil purifier working pressure is at about 4MPa, and foundry goods can meet usage requirement.As shown in Figure 2, the first cavity 21, second cavity 22, filler opening 24 and oil outlet 25 in upper shell 2 are located along the same line, first cavity 21 and the second cavity 22 between oil outlet 25 and filler opening 24, the first cavity 21 and with filler opening 24 and oil outlet 25 coaxial.Filler opening 24 is arranged at the first end of upper shell 2, oil outlet 25 is arranged at the second end of upper shell 2,3rd cavity 23 forms the opening allowing lower shell body 4 insert on the 3rd end end face of upper shell 2,3rd cavity 23 is positioned at the side of the first cavity 21 and the second cavity 22 place straight line, the axis of the 3rd cavity 23 and with the axis perpendicular of the first cavity 21.
As shown in Figure 1, a circular boss 28 is set in upper shell 2 on the madial wall separating the first cavity 21 and the 3rd cavity 23, this boss 28 is coaxial with the 3rd cavity 23, boss 28 also stretches in the 3rd cavity 23, the center of boss 28 is run through and is arranged a through hole, and through hole is for being communicated with the first cavity 21 and the 3rd cavity 23.Filter core 5 is the critical component filtered, and determines the precision of filtering, primarily of filter paper and for compositions such as the sheet metal part of fixing filter paper and O type circle and Stainless Steel Cloths.During installation, be inserted on boss 28 by filter core 5 one end, filter core 5 the other end is compressed by the first spring 6.More during renew cartridge 5, only need turn on lower shell body 4, extracting filter core 5 can complete.
As shown in Figure 1, the first spring 6 is Compress Spring, and the first spring 6 is clipped between plug 7 and filter core 5, for applying impacting force to filter core 5, makes filter core 5 fixing more reliable.
As shown in Figure 1, for being threaded between upper shell 2 with lower shell body 4, the internal face at the 3rd cavity 23 place in upper shell 2 arranges internal thread 29, and the outer wall of the corresponding opening end at lower shell body 4 is provided with outside thread, and be threaded easy disassembly.With the radial seal of O type circle, hydraulic oil is avoided to reveal between upper shell 2 and lower shell body 4.The bottom position of lower shell body 4 is provided with plug 7, plug 7 be for quick pressure releasing and cleaning filter core 5 dirty.
As shown in Figure 1, it is inner that bypass valve 3 is placed in upper shell 2, and as shown in Figure 3, bypass valve 3 comprises spool, metallic shim 33, sealing gasket 34, second spring 32 and nut 31; Spool to have with upper shell 2 for the large footpath section 35 that is threaded and is connected with section 35 one end, large footpath and inserts the path section 36 in the first cavity 21, the diameter of large footpath section 35 is greater than the diameter of path section 36, large footpath section 35 and path section 36 are for be coaxially fixedly connected with, and the length of path section 36 is greater than the length of large footpath section 35.Large footpath section 35 is between the first cavity 21 and the second cavity 22, and path section 36 stretches in the first cavity 21, and large footpath section 35 also has the relief hole 37 be communicated with the second cavity 22, and relief hole 37 is for being communicated with the first cavity 21 and the second cavity 22.Metallic shim 33, sealing gasket 34, second spring 32 and nut 31 are all sheathed in path section 36, nut 31 and path section 36 are for being threaded, second spring 32 is clipped between nut 31 and metallic shim 33, sealing gasket 34 is clipped between metallic shim 33 and large footpath section 35, second spring 32 is for applying pressure to metallic shim 33 and sealing gasket 34, sealing gasket 34 is made to keep, with the state of the end contact of large footpath section 35, making sealing gasket 34 can close relief hole 37.
As shown in Figure 3, the relief hole 37 in large footpath section 35 is the manhole running through large footpath section 35 vertically, and relief hole 37 is also circumferentially evenly equipped with multiple in large footpath section 35.Oil purifier in normal operation, hydraulic oil enters from filler opening 24, then flow in lower shell body 4 through the second cavity 22, filter through filter core 5 pairs of oil residues again, clean fluid after filtration flows out in the first cavity 21 from the inner die cavity of filter core 5, finally flow out from oil outlet 25, enter hydraulic work system.
As shown in Figure 1, oil purifier of the present utility model also comprises and being arranged on upper shell 2 and the differential pressure transmitter device 1 be positioned at outside upper shell 2.The structure of differential pressure transmitter device 1 as well known in the skilled person, does not repeat them here.Also there are in upper shell 2 two intercommunicating pores 26 being respectively used to be communicated with differential pressure transmitter device 1 and the first cavity 21 and the second cavity 22, the outer surface of upper shell 2 has the attachment face 27 for installing differential pressure transmitter device 1, differential pressure transmitter device 1 is placed on attachment face 27, and is connected with upper shell 2 by socket head screw.The setting of intercommunicating pore 26 is poor in order to differential pressure transmitter device 1 detected pressures, between differential pressure transmitter device 1 and attachment face 27, be also provided with seal ring 8, seal ring 8 also surrounds the opening that intercommunicating pore 26 formed on attachment face 27, and seal ring 8 is preferably O type circle, improve sealing, avoid hydraulic oil to reveal.
After oil purifier total assembling of the present utility model, with filter core 5 for boundary, oil purifier inner space is divided into two-part, a part is fluid district to be filtered, and another part is the clean fluid district of having filtered.There are bypass valve 3 and differential pressure transmitter device 1 between as safety protection mechanism, play a role under unusual working state.
Oil purifier of the present utility model, when normally working, hydraulic oil is entered by right side filler opening 24, flows through filter core 5 pairs of oil residues and filters, and the clean fluid after filtration flows out to left side oil outlet 25 from the inner die cavity of filter core 5 and enters hydraulic work system.When filter core 5 periphery because the accumulation of impurities stopped results in blockage, oil purifier inside filtering area pressure reduces and the rising of district to be filtered pressure, will certainly cause hydraulic system the cisco unity malfunction even explosion of oil purifier housing, constitute a threat to safely to whole system.This oil purifier has duplicate protection and preventive measure: be provided with differential pressure transmitter device 1 on the one hand, differential pressure transmitter device 1 major function is for providing alarm signal when non-normal working, when hydraulic work system, filter core 5 in oil purifier block gradually because of the pollutant in intercepting system import and export produce pressure reduction (i.e. filter core 5 pressure loss), when pressure difference increases to signal-transmitting machine setting, signal-transmitting machine sends signal automatically, signal-transmitting machine internal circuit connects simultaneously its upper instruction button ejection, indication mechanism operator should clean or more renew cartridge 5, guarantee system cloud gray model safety.Another heavy protective measure is that in upper shell 2 inner base, be configured with bypass valve 3 will play a role under district to be filtered pressure continues rising condition.As shown in Figure 3, bypass valve 3 spool disk has worn relief hole 37 to bypass valve 3 structure, and the area of relief hole 37 and pre-pressure of the spring are determined according to the force value of system specialization.During normal work, nut 31 screws in the second spring 32 and promotes the sealing gasket 34 shutoff relief hole 37 that metallic shim 33 compresses quality of rubber materials fluid can not directly be passed through, when pressure increases to over setting pressure, hydraulic oil makes to produce certain interval between sealing gasket 34 and metallic shim 33 from the thrust Compress Spring that relief hole 37 produces, fluid oozes out from gap and can prevent district to be filtered pressure from continuing to raise, the safe operation of maintenance system.The effect sequencing of duplicate protection measure be differential pressure transmitter device 1 prior to bypass valve 3, so the working pressure that the working pressure that differential pressure transmitter device 1 sets sets lower than bypass valve 3.
Below by reference to the accompanying drawings the utility model is exemplarily described.Obviously, the utility model specific implementation is not subject to the restrictions described above.As long as have employed the improvement of the various unsubstantialities that method of the present utility model is conceived and technological scheme is carried out; Or without improvement, above-mentioned design of the present utility model and technological scheme directly applied to other occasion, all within protection domain of the present utility model.
Claims (6)
1. be suitable for the oil purifier of hydraulic system, it is characterized in that, comprising:
Upper shell, its inside has filler opening, oil outlet, the first cavity, the second cavity and the 3rd cavity; Oil outlet adjacent with the first cavity and both be communicated with, filler opening adjacent with the second cavity and both be communicated with, the 3rd cavity is communicated with the second cavity with the first cavity;
Lower shell body, its opening end inserts in the 3rd cavity, and with upper shell for being threaded;
Bypass valve, it is arranged in the first cavity;
Filter core, it is arranged in lower housing cavity;
Plug, it inserts in the tapped hole set by closed end of lower shell body, and with lower shell body for being threaded; And
First spring, it is arranged in lower housing cavity, and is clipped between plug and filter core.
2. the oil purifier being suitable for hydraulic system according to claim 1, is characterized in that, described first cavity, the second cavity, filler opening and oil outlet are located along the same line, and the first cavity and the second cavity are between oil outlet and filler opening.
3. the oil purifier being suitable for hydraulic system according to claim 1 and 2, is characterized in that, described bypass valve comprises:
Spool, it has with described upper shell is the large footpath section that is threaded and is connected with section one end, large footpath and inserts the path section in described first cavity, and large footpath section has the relief hole be communicated with described second cavity;
Metallic shim, it is sheathed in path section;
Sealing gasket, it is clipped between metallic shim and large footpath section, and for closed relief hole;
Second spring, it is sheathed in path section, and for applying pressure to metallic shim.
4. the oil purifier being suitable for hydraulic system according to claim 3, is characterized in that, described relief hole is circumferentially evenly equipped with multiple in the section of described large footpath.
5. the oil purifier being suitable for hydraulic system according to claim 4, is characterized in that, also comprises and being arranged on described upper shell and the differential pressure transmitter device be positioned at outside upper shell.
6. the oil purifier being suitable for hydraulic system according to claim 5, is characterized in that, described upper shell has two intercommunicating pores being respectively used to be communicated with described differential pressure transmitter device and described first cavity and the second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520759094.0U CN204985183U (en) | 2015-09-28 | 2015-09-28 | Be suitable for hydraulic system's oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520759094.0U CN204985183U (en) | 2015-09-28 | 2015-09-28 | Be suitable for hydraulic system's oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985183U true CN204985183U (en) | 2016-01-20 |
Family
ID=55119556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520759094.0U Active CN204985183U (en) | 2015-09-28 | 2015-09-28 | Be suitable for hydraulic system's oil filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985183U (en) |
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2015
- 2015-09-28 CN CN201520759094.0U patent/CN204985183U/en active Active
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