CN203404172U - Filter with safety valve - Google Patents
Filter with safety valve Download PDFInfo
- Publication number
- CN203404172U CN203404172U CN201320497315.2U CN201320497315U CN203404172U CN 203404172 U CN203404172 U CN 203404172U CN 201320497315 U CN201320497315 U CN 201320497315U CN 203404172 U CN203404172 U CN 203404172U
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- China
- Prior art keywords
- filter
- safety valve
- lobe
- cylinder
- described filter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a filter with a safety valve. The filter with the safety valve is simple in structure, few in safety valve machining process, low in accuracy, good in interchange performance and environmentally friendly, saves cost, and meanwhile has the protection effect on a whole hydraulic system. According to the technical scheme, the filter with the safety valve comprises a filtering cylinder and a filtering body, the filtering cylinder and the filtering body are detachably assembled, a filter element is arranged inside the filtering cylinder, and an oil inlet and an oil outlet are formed in the two sides of the filtering body. The filter with the safety valve is characterized in that the safety valve is further arranged inside the filtering cylinder and arranged between the filter element and the filtering body. By means of the design of the filter with the safety valve, the machining requirement for the safety valve is lowered, the cost is saved, a technician in the field can conveniently disassemble, assemble and maintain the filter through the arrangement of the safety valve, and it is guaranteed that the filter has the good interchange performance, and meanwhile has the protection effect on the whole hydraulic system.
Description
Technical field
The utility model relates to the technical field of hydraulic filter, and more particularly, it relates to a kind of filter with safety valve.
Background technique
Hydraulic filter plays a part hydraulic medium to filter; to keep the turbidity test of fluid, guarantee the reliability of system, due to position and the interactively of filter in hydraulic system; filter often needs to add safety valve, for guaranteeing the normal operation of filter and other element being protected.
At present, the existing filter with safety valve, what have is provided with safety valve in filter core, what have is provided with safety valve in filter body, also have at filter core, in filter body, be equipped with safety valve, above-mentioned safety valve is all the effects of protection earial drainage of playing after filter body overburdening, safety valve is located in filter core or filter body all many and loaded down with trivial details to the manufacturing procedure of safety valve, must with filter body, filter core closely cooperates, not so safety valve not only can not play safety protection effect, and damage filter itself, simultaneously, those skilled in the art cannot carry out dismounting to safety valve, exchange poor performance, often a position is damaged and is just needed integral replacing, not environmental protection, do not save, so need to be improved.
Model utility content
The deficiency existing for prior art, the purpose of this utility model be to provide a kind of simple in structure, cheap to safety valve processing request lower cost, exchange that performance is good, economical environment-protective also has the filter with safety valve to whole hydraulic system protective action concurrently simultaneously.
For achieving the above object, the utility model provides following technological scheme: the filter body that comprises the detachable assembling of filter cylinder and filter cylinder, in described filter cylinder, be provided with filter core, described filter body both sides are provided with filler opening and oil outlet, in described filter cylinder, be also provided with safety valve, described safety valve is located between described filter core and filter body.
By adopting technique scheme; safety valve is located at those skilled in the art between described filter core and filter body and can freely assembles according to client's demand; exchange performance is good; without being assemblied in filter core and filter body the inside; reduce the making requirement of safety valve; low to safety valve requirement on machining accuracy, the manufacture cost of minimizing filter also has the protective action to whole hydraulic system concurrently simultaneously.
The utility model is preferably set to: described safety valve comprises filter lobe, the elastic component that is located at the bypass spool in described filter lobe, the retaining ring being threaded with described filter lobe and is connected described bypass spool and retaining ring, and described filter lobe is provided with logical hydraulic fluid port.
By adopting technique scheme, when in filter cylinder, oil pressure is too high, bypath valve can be opened, and oil is discharged by logical hydraulic fluid port, reduces oil pressure in filter cylinder, plays the stability of protection hydraulic system, the reset of bypath valve when elastic component guarantees that in filter cylinder, oil pressure is replied.
This practicality is further set to: described filter lobe one side is close to described filter core inwall, and opposite side is close to the external wall of described filter, and described retaining ring is connected with described filter body inner thread.
By adopting technique scheme, retaining ring screw connection structure is simple, and those skilled in the art operates easy accessibility, and safety valve filter lobe is close to filter core and filter body, avoids oil to tap into into safety valve inside by direct clearance, affects whole hydraulic filtering system.
This practicality is further set to: described filter cylinder outer side wall offers groove, in described groove, is provided with Sealing.
By adopting technique scheme, detachable assembling between filter cylinder and filter body, in theory should be gapless at their fit engagement places, but tend to leave gap in actual operation assembly process, even if the setting of Sealing is guaranteed the oil in gapped filter cylinder and also can not leaked, affects whole hydraulic filtering system.
This practicality is further set to: described filter core madial wall offers draw-in groove, in described draw-in groove, is provided with seal ring.
By adopting technique scheme, filter lobe is close to filter core inwall, also answers in theory gapless, but may leave fine clearance in practical set process, the setting of seal ring guarantees that the oil in filter cylinder directly enters in filter core without filtering, and affects whole hydraulic filtering system.
Accompanying drawing explanation
Fig. 1 is the embodiment's of the utility model band safety valve filter structural representation.
Fig. 2 is the structural representation of the utility model safety valve.
Fig. 3 is the structural representation of the utility model safety valve oil circuit process while closing.
Fig. 4 is the structural representation of the utility model safety valve oil circuit process while opening.
Fig. 5 is the partial enlarged drawing of Figure 1A.
Fig. 6 is the partial enlarged drawing of Figure 1B.
1-filter cylinder in figure, 2-filters body, 3-filter core, 4-seal ring, 5-filler opening, 6-oil outlet, 7-safety valve, 8-filters lobe, 9-bypass spool, 10-retaining ring, 11-elastic component, 12-leads to hydraulic fluid port, 13-groove, 14-Sealing, 15-draw-in groove.
Embodiment
Referring to figs. 1 through Fig. 6, the embodiment of a kind of filter with safety valve of the utility model is described further.
A kind of filter with safety valve, the filter body 2 that comprises filter cylinder 1 and filter cylinder 1 detachable assembling, is provided with filter core 3 in described filter cylinder 1, and described filter body 2 both sides are provided with filler opening 5 and oil outlet 6, in described filter cylinder 1, be also provided with safety valve 7, described safety valve 7 is located between described filter core 3 and filter body 2.
Described safety valve 7 comprises filter lobe 8, be located at the bypass spool 9 in described filter lobe 8, the retaining ring 10 being threaded with described filter lobe 8 and the elastic component 11 that is connected described bypass spool 9 and retaining ring 10, described filter lobe 8 is provided with logical hydraulic fluid port 12, described filter lobe 8 one sides are close to described filter core 3 inwalls, opposite side is close to described filter body 2 outer walls, described retaining ring 10 is connected with described filter body 2 inner threads, described filter cylinder 1 outer side wall offers groove 13, in described groove 13, be provided with Sealing 14, described filter core 3 madial walls offer draw-in groove 15, in described draw-in groove 15, be provided with seal ring 4.
As shown in Figure 3, during normal operation, hydraulic system's media oil enters from filler opening 5, through filter core 3, by 3 pairs of oil of filter core, is filtered impurity is foreclosed, and finally from oil outlet 6, goes out; Elongated along with filter service time, impurity is piled up in filter core 3 outsides and user does not maintain impurity elimination to filter, oil can be trapped in filter cylinder 1 and cause the interior oil pressure of filter cylinder 1 to rise so, reach the cracking pressure of safety valve 7, bypass spool 9 meeting compression elastic pieces 11 lean on toward retaining ring 10, thereby in filter cylinder, oil just can be gone out and reach as shown in Figure 4 the function of protecting filter toward oil outlet 6 again by logical hydraulic fluid port 12; Safety valve is located between filter core and filter body and makes those skilled in the art's dismounting, easy to maintenance; exchange performance is good; without being assemblied in filter core and filter body the inside; reduce the making requirement of safety valve; low to safety valve requirement on machining accuracy; the manufacture cost that reduces filter also has the protective action to whole hydraulic system concurrently simultaneously.
The filter with safety valve above the utility model embodiment being provided is described in detail, and for one of ordinary skill in the art, the thought according to the utility model embodiment, all will change in specific embodiments and applications.In sum; this description should not be construed as restriction of the present utility model; other any any variation and modification of doing according to the constructed thought of the utility model and scope of patent protection or be equal to enforcement, is scope of patent protection of the present utility model and contains.
Claims (5)
1. the filter with safety valve, the filter body that comprises the detachable assembling of filter cylinder and filter cylinder, is provided with filter core in described filter cylinder, and described filter body both sides are provided with filler opening and oil outlet, it is characterized in that: in described filter cylinder, be also provided with safety valve, described safety valve is located between described filter core and filter body.
2. a kind of filter with safety valve according to claim 1, it is characterized in that: described safety valve comprises filter lobe, the elastic component that is located at the bypass spool in described filter lobe, the retaining ring being threaded with described filter lobe and is connected described bypass spool and retaining ring, and described filter lobe is provided with logical hydraulic fluid port.
3. a kind of filter with safety valve according to claim 2, is characterized in that: described filter lobe one side is close to described filter core inwall, and opposite side is close to the external wall of described filter, and described retaining ring is connected with described filter body inner thread.
4. according to a kind of filter with safety valve described in claim 1 or 3, it is characterized in that: described filter cylinder outer side wall offers groove, in described groove, is provided with Sealing.
5. according to a kind of filter with safety valve described in claim 1 or 3, it is characterized in that: described filter core madial wall offers draw-in groove, in described draw-in groove, is provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497315.2U CN203404172U (en) | 2013-08-14 | 2013-08-14 | Filter with safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320497315.2U CN203404172U (en) | 2013-08-14 | 2013-08-14 | Filter with safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404172U true CN203404172U (en) | 2014-01-22 |
Family
ID=49940110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320497315.2U Expired - Lifetime CN203404172U (en) | 2013-08-14 | 2013-08-14 | Filter with safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404172U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867537A (en) * | 2014-03-20 | 2014-06-18 | 上海朗境流体技术有限公司 | Return filter and method of filtering fluid by using return filter |
| CN105298994A (en) * | 2014-06-11 | 2016-02-03 | 上海朗境流体技术有限公司 | Improved return filter and fluid filtering method thereof |
-
2013
- 2013-08-14 CN CN201320497315.2U patent/CN203404172U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867537A (en) * | 2014-03-20 | 2014-06-18 | 上海朗境流体技术有限公司 | Return filter and method of filtering fluid by using return filter |
| CN105298994A (en) * | 2014-06-11 | 2016-02-03 | 上海朗境流体技术有限公司 | Improved return filter and fluid filtering method thereof |
| CN105298994B (en) * | 2014-06-11 | 2017-06-16 | 上海朗境流体技术有限公司 | A kind of method of improved return filter and its filtering fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |