CN204099346U - Multi-bed filter - Google Patents
Multi-bed filter Download PDFInfo
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- CN204099346U CN204099346U CN201420555699.3U CN201420555699U CN204099346U CN 204099346 U CN204099346 U CN 204099346U CN 201420555699 U CN201420555699 U CN 201420555699U CN 204099346 U CN204099346 U CN 204099346U
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- filter core
- pressure
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- base
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Abstract
The utility model discloses a kind of multi-bed filter, the base comprising the housing of tubular, the top cover be fixedly connected with one end of described housing and be fixedly connected with the other end of described housing, also comprise the first filter core that fixed cover is located at the tubular of described enclosure interior, one end of described first filter core is connected with described top seal and the other end is connected with described base seal, forms the first cavity between described first filter core and the inwall of described housing; Fixed cover is located at the second filter core of the tubular of described first filter core inside, one end of described second filter core is connected with described top seal and the other end is connected with described base seal, form the second cavity between first filter core and described second filter core, the hollow space of described second filter core is the 3rd cavity; Described base or housing offer the first-class through hole be communicated with described first cavity, and base offers the second through hole be communicated with described 3rd cavity.Multi-bed filter is effectively avoided filter core to block and is reduced its waste.
Description
Technical field
The utility model relates to liquid plant field, more particularly, relates to a kind of multi-bed filter.
Background technique
Along with the fast development of industry, hydraulic system is widely used at modern project mechanical field.Hydraulic oil is the working medium of transferring energy in hydraulic system, and because impurity is introduced in the meeting being difficult in working procedure avoid, and the pollution of hydraulic oil directly affects the normal operation of whole hydraulic system.For guaranteeing that the performance of hydraulic system is with reliable, requires more and more higher to the turbidity test of fluid.At present, in hydraulic system pumping plant, conventional internal circulation system carries out hydraulic oil filtering, its basic principle is under the effect of pressure difference, penetration by liquid permeable medium (filter core) in hydraulic oil, and large-size particles due to particle diameter larger, not by the hole of permeable medium, thus realize being separated of hydraulic oil and large-size particles.By hydraulic oil filter, better process the pollutant of hydraulic system, effectively ensure that the turbidity test of fluid, thus extended the working life of hydraulic element, ensure system worked well.
At present, comparatively common internal circulation filtering device mostly is single layer filter.Single layer filter uses single filter core to filter fluid, and therefore its porosity size need meet the requirement of oil cleanliness, and then stricter for the requirement of hole.And for newly assembled hydraulic system or the hydraulic system that using after maintenance transformation, containing a large amount of impurity in hydraulic oil, because filter core hole is relatively thin, easily there is the phenomenon of large granular impurity blocking filter core in the short time, and then fail to give full play to its filtration and namely need more to renew filter core, cause waste thus.
In sum, how effectively avoiding filter core to block and reduce filter core waste is current those skilled in the art's urgent problem.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of multi-bed filter, and this multi-bed filter can solve effectively avoids filter core to block and the problem reducing filter core waste.
In order to achieve the above object, the utility model provides following technological scheme:
A kind of multi-bed filter, the base comprising the housing of tubular, the top cover be fixedly connected with one end of described housing and be fixedly connected with the other end of described housing, also comprises:
Fixed cover is located at the first filter core of the tubular of described enclosure interior, and one end of described first filter core is connected with described top seal and the other end is connected with described base seal, forms the first cavity between described first filter core and the inwall of described housing;
Fixed cover is located at the second filter core of the tubular of described first filter core inside, one end of described second filter core is connected with described top seal and the other end is connected with described base seal, form the second cavity between described first filter core and described second filter core, the hollow space of described second filter core is the 3rd cavity;
Described base or housing offer the first-class through hole be communicated with described first cavity, and described base offers the second through hole be communicated with described 3rd cavity.
Preferably, in above-mentioned multi-bed filter, comprise further the first pressure-detecting device measuring described first cavity internal pressure, the second pressure-detecting device measuring described second cavity internal pressure and measure in the 3rd pressure-detecting device of described 3rd cavity internal pressure at least one.
Preferably, in above-mentioned multi-bed filter, described first pressure-detecting device is be installed on the pressure transducer on described base or housing, and described base or housing offer the first pressure tap be communicated with described first cavity, and described first pressure-detecting device is connected with described first pressure tap;
Described second pressure-detecting device and described 3rd pressure-detecting device are the pressure transducer be installed on base, described base offers the second pressure tap be communicated with described second cavity and the 3rd pressure tap be communicated with described 3rd cavity, described second pressure-detecting device is connected with described second pressure tap, and described 3rd pressure-detecting device is connected with described 3rd pressure tap.
Preferably, in above-mentioned multi-bed filter, offer the through hole that internal diameter is greater than described second filter core external diameter in the middle part of described top cover, described multi-bed filter comprises the tegillum be sealed and matched with described through hole further, described tegillum and described top cover is dismountable is tightly connected.
Preferably, in above-mentioned multi-bed filter, described tegillum is connected with described closure stud, and is provided with seal ring between described top cover and described tegillum.
Preferably, in above-mentioned multi-bed filter, described enclosure interior comprises the first filter core support and the second filter core support further, described first filter core support is connected with described top seal with second equal one end of filter core support, the other end is fixedly connected with described base, and the first filter core described in described first filter core stent support, the second filter core described in described second filter core stent support.
Preferably, in above-mentioned multi-bed filter, described base is threaded with described first filter core support and described second filter core support respectively.
Preferably, in above-mentioned multi-bed filter, described first filter core support is wire netting or net formula filter core, and described second filter core support is wire netting or net formula filter core.
Preferably, in above-mentioned multi-bed filter, described first filter core is positioned over described first filter core stent outer, and described second filter core is positioned over described second filter core stent outer.
Preferably, in above-mentioned multi-bed filter, the hole of described first filter core is greater than the hole of described second filter core, and described first-class through hole is inlet opening, and described second through hole is liquid outlet opening.
The multi-bed filter that the utility model provides, owing to have employed the filter core more than one deck, for the situation containing a large amount of impurity in hydraulic oil, described first filter core is different with the impurity adhesion condition of described second filter core, the fluid passing through first time filtration, when filtering through second time, not easily blocks filter core because turbidity test are higher, and then according to the two pollution condition, can select to change described first filter core or described second filter core, or change described first filter core and described second filter core simultaneously separately.Thus, the waste of filter core is effectively decreased.Meanwhile, described second cavity is that the filtration of fluid provides sufficient space, thus effectively improves filter efficiency.
In a preferred embodiment, described multi-bed filter has the first pressure-detecting device measuring described first cavity internal pressure, the second pressure-detecting device measuring described second cavity internal pressure and measures the 3rd pressure-detecting device of described 3rd cavity internal pressure.Due to described multi-bed filter in use, the force value of each cavity is accumulated density with filter residue in filter core and changes, on filter core, the increase of filter residue accumulation density can be caused and be reduced and chamber pressure increase by its flow, therefore the pressure change recorded according to pressure-detecting device can judge the pollution condition of filter core and change in time, thus effectively improves the reliability of multi-bed filter.
In another preferred embodiment, described multi-bed filter arranges tegillum further.When the second filter core needs to change, without the need to top cover described in integral demounting, only need by tegillum dismounting and replaceable, use is more for convenience.
In another preferred embodiment, described multi-bed filter comprises filter core support further, this filter core support can be wire netting or net formula filter core, when filter process is higher to required precision, first filter core support and/or the second filter core support can be replaced by net formula filter core by wire netting, its pore size is selected as requested, and fluid can be passed through three layer filtration thus, effectively improves the precision of filtration.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 provides by the utility model the structural representation of the first embodiment of multi-bed filter;
Fig. 2 provides by the utility model the structural representation of the second embodiment of multi-bed filter;
Fig. 3 provides by the utility model the structural representation of the third embodiment of multi-bed filter;
Fig. 4 provides by the utility model the structural representation of the 4th kind of embodiment of multi-bed filter;
Fig. 5 provides by the utility model the structural representation of the 5th kind of embodiment of multi-bed filter.
In accompanying drawing, mark is as follows:
Top cover 1, housing 2, base 3, first filter core 4, second filter core 5, first-class through hole 6, second through hole 7, first cavity 8, second cavity 9, the 3rd cavity 10, first pressure-detecting device 11, second pressure-detecting device 12, the 3rd pressure-detecting device 13, first pressure tap 14, second pressure tap 15, the 3rd pressure tap 16, tegillum 17, seal ring 18, bolt 19, first filter core support 20, second filter core support 21, the 3rd filter core 22, the 3rd filter core support 23, the 4th cavity 24.
Embodiment
The utility model embodiment discloses a kind of multi-bed filter, effectively to avoid filter core to block, reduces filter core waste.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, Fig. 1 provides by the utility model the structural representation of the first embodiment of multi-bed filter.
In the first embodiment, multi-bed filter provided by the utility model, the base 3 comprising the housing 2 of tubular, the top cover 1 be fixedly connected with one end of housing 2 and be fixedly connected with the other end of housing 2, top cover 1 or base 3 and the Placement of housing 2 can be to weld etc. and are fixedly connected with, for convenience of the replacing of filter core in using process, top cover 1 or base 3 and housing 2 can be conventional the connection of removably, as being threaded, certain top cover 1 and base 3 all also can with housing 2 dismountable connection.
Described multi-bed filter also comprises the first filter core 4 that fixed cover is located at the tubular of housing 2 inside, one end of first filter core 4 and top cover 1 are tightly connected and the other end and base 3 are tightly connected, being tightly connected of herein and hereafter mentioning seals by seal with elastometic washer or other modes, does not limit to and seal form.The first cavity 8 is formed between first filter core 4 and the inwall of housing 2.At the second filter core 5 of the first fixing sheathed tubular in filter core 4 inside, one end of second filter core 5 is connected with close 1 envelope of top cover and the other end and base 3 are tightly connected, the hollow space forming the second cavity 9, second filter core between first filter core 4 and the second filter core 5 is the 3rd cavity 10.Base 3 offers the first-class through hole 6 be communicated with the first cavity 8, and base 3 offers the second through hole 7 be communicated with the 3rd cavity 10.Certainly, first-class through hole 6 also can be opened on housing 2.
The pore size of the first filter core 4 is greater than the pore size of the second filter core 5, first-class through hole 6 is liquid entering hole, second through hole 7 is liquid outlet, fluid is flowed into by first-class through hole 6, first filter through the first filter core 4 that hole is larger, filter through the second filter core 5 that hole is less again, then flowed out by second through hole 7.
Fluid is flowed into by liquid entering hole, initial contamination degree is higher, and after the first filter core 4 filters, large-size particles is comparatively large due to particle diameter, can not through the first filter core 4, thus the oil contaminant in the second cavity 9 is less, then through the filtration of higher the second filter core 5 of precision to reach usage requirement.When the first filter core 4 can not continue to use due to pollutant blocking, pull down top cover 1 or base 3, change the first filter core 4; When the second filter core 5 can not continue to use due to pollutant blocking, pull down top cover 1 or base 3, change the second filter core 5.Therefore, the first filter core 4 may be worked as and change repeatedly and just need replacing second filter core 5, thus effectively save filter core.
Some further improvement can be carried out to the multi-bed filter in the first mode of execution above-mentioned.
Please refer to Fig. 2, Fig. 2 is the structural representation of multi-bed filter the second embodiment provided by the utility model.
For the pollution level of more effective each filter core of monitoring, thus timely more renew cartridge, improve the reliability of multi-bed filter, described multi-bed filter can arrange the first pressure-detecting device 11, second pressure-detecting device 12 and the 3rd pressure-detecting device 13 further, to measure the pressure of each cavity.
By the measurement of the first pressure-detecting device 11, second pressure-detecting device 12 and the 3rd pressure-detecting device 13, the pressure of each cavity is monitored, follow the tracks of the situation of change of pressure.In use, first pressure-detecting device 11 measures the initial pressure that fluid flows into, due to the inhibition of filter core, reduced by the pressure after filter core, and force value is accumulated density with filter residue in filter core and changes, for the first filter core 4, on it, filter residue accumulates density increase and flow can be caused to reduce and pressure increase in the second cavity 9, therefore can judge the pollution condition of the first filter core 4 according to the pressure change that the second pressure-detecting device 12 is measured and change in time.For the second filter core 5, based on same principle, undertaken measuring the pollution condition that can judge the second filter core 5 by the pressure of the 3rd pressure-detecting device 13 to the 3rd cavity 10 and also change in time.
It is to be noted that the first pressure-detecting device 11, second pressure-detecting device 12 and the 3rd pressure-detecting device 13 might not need to install simultaneously, can select separately wherein one or two to be installed, as only installed the second pressure-detecting device 12 and the 3rd pressure-detecting device 13 or only installing the second pressure-detecting device 12 etc. according to actual service condition.
Common, pressure-detecting device can select pressure transducer, and namely the first pressure-detecting device 11 is the first pressure transducer, the second pressure-detecting device 12 is the second pressure transducer, the 3rd pressure-detecting device 13 is the 3rd pressure transducer.And the first pressure tap 14 is offered further on the first-class through hole 6 of multi-bed filter base 3, and be communicated to base exterior and connect the first pressure transducer, measure the pressure in the first cavity 8; Offer the second pressure tap 15 between first filter core and the second filter core and be communicated to base exterior and connect the second pressure transducer, measure the pressure in the second cavity 9; Second through hole 7 is offered the 3rd pressure tap 16 and be communicated to base exterior and connect the 3rd pressure transducer, measure the pressure in the 3rd cavity 10.Certainly, for realizing pressure measurement object, also other pressure-detecting devices can be adopted, be not limited to pressure transducer, and the position of the first pressure tap 14 also can be opened on housing, be directly communicated with the first cavity 8, corresponding first pressure transducer 11 is installed on outside and is connected with the first pressure tap 14.Offering of pressure tap is in order to setting pressure sensor, when carrying out pressure test according to other pressure-detecting devices, also can not arrange pressure tap.
Please refer to Fig. 3, Fig. 3 is the structural representation of the third embodiment of multi-bed filter provided by the utility model.
In above-mentioned two kinds of embodiments, need more renew cartridge time, need integral demounting top cover 1 or base 3, for making operation more convenient, in the multi-bed filter of the first embodiment above-mentioned, in the middle part of top cover 1, offer the through hole that internal diameter is greater than the second filter core external diameter further, described multi-bed filter comprises the tegillum 17 be sealed and matched with through hole further, also namely the shape size of tegillum 17 should be consistent with the shape size of through hole, and tegillum can put into through hole, and the two contacts.Tegillum 17 is tightly connected with top cover 1 is dismountable.Here sealing, refers to a kind of result, but not means, also namely no matter adopt which kind of concrete technological means, between tegillum 1 and top cover 17, should not occur leakage phenomenon.Common, can seal ring 18 be set between tegillum 1 and top cover 17 and seals.Tegillum 1 can have multiple with the Placement of top cover 17, and as being threaded, bolt 19 connects.When needs replacing the second filter core 5, without the need to dismantling top cover 1 or the base 3 of whole multi-bed filter, only tegillum 17 need be pulled down.Certainly, the multi-bed filter that the setting of tegillum 17 also can provide in above-mentioned the second embodiment improves.
Please refer to Fig. 4, Fig. 4 is the structural representation of multi-bed filter provided by the utility model 4th kind of embodiment.
Housing 2 inside comprises the first filter core support 20 and the second filter core support 21 further, one end and the top cover 1 of the first filter core support 20 are tightly connected, the other end is fixedly connected with base 3, one end and the tegillum 17 of the second filter core support 21 are tightly connected, the other end is fixedly connected with base 3, and the first filter core support 20 supports the first filter core 4, second filter core support 21 supports the second filter core 5.Being tightly connected here can arrange seal ring, and can arrange sealing gasket between the second filter core support and top cover, other sealing means also can certainly.When not comprising tegillum 17 during multi-bed filter is as above-mentioned first or the second embodiment, the second filter core support and top cover 1 are tightly connected.When do not need according to service condition more renew cartridge support time, it can adopt modes such as welding with the connection of base 3, can adopt the conventional dismountable installation of mode, as screw thread etc. if need change.First filter core 4 is positioned over outside the first filter core support 20, and the second filter core 5 is positioned over outside the second filter core support 21.Certainly, filter core also can be arranged at inside filter core support as required.
First filter core support 20 and the second filter core support 21 can be wire netting, mainly play a part to support filter core.In multi-bed filter using process, need under considering a stable condition to improve the filter precision to fluid, the second filter core support 21 also can adopt net formula filter core, and when the second filter core 5 is positioned over outside the second filter core support 21, its pore size is less than the second filter core; When second filter core 5 is positioned over inside the second filter core support 21, its pore size between the first filter core and the second filter core from, and fluid can be passed through three layer filtration.Certainly, the first filter core support 20 also can adopt net formula filter core.
Please refer to Fig. 5, Fig. 5 is the structural representation of multi-bed filter provided by the utility model 5th kind of embodiment.
Point out above, the precision of fluid can be improved by multiple filtration, simultaneously can selectively more renew cartridge to reach the object of saving.When multi-bed filter only comprises first filter core 4 and second filter core 5, save filter core to improve filter precision further simultaneously, can on the basis of above-mentioned 4th kind of embodiment, in the 3rd filter core 22 of the second fixing sheathed tubular in filter core 5 inside, its one end and tegillum 17 are tightly connected, the other end is fixedly connected with base 3, 3rd filter core 22 is positioned over outside the 3rd filter core support 23, it is the 3rd cavity 10 between second filter core and the 3rd filter core, the hollow space of the 3rd filter core 22 is the 4th cavity 24, second through hole 7 is communicated with the 4th cavity, the hole of the 3rd filter core 22 is less than the hole of the second filter core 5.It is pointed out that here also can obstructed filtration core support 23, and the one end and the tegillum 17 that directly arrange the 3rd filter core 22 are tightly connected, and the other end and base 3 are tightly connected.Certainly, the multi-bed filter that the setting of the 3rd filter core also can provide in first, second or the third embodiment improves.
Above-mentioned the first in the 5th kind of embodiment, the pore size of the first filter core 4 is all greater than the pore size of the second filter core 5.Certainly, the hole relative size of the first filter core 4 and the second filter core 5 can be arranged according to actual conditions, and the pore size as the first filter core 4 is less than the pore size of the second filter core 5.So, now liquid entering hole is second through hole 7, and liquid outlet is first-class through hole 6, and fluid after the second filter core 5 filters, then filters through the first filter core 4, is then flowed out by first-class through hole 6.Because the flow direction of fluid changes, the corresponding relation of the filter core pollution condition of pressure transducer reaction changes, and filter core pore size arranges and occurs in sequence change, but its principle is all identical, repeats no more herein.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a multi-bed filter, the base (3) comprising the housing (2) of tubular, the top cover (1) be fixedly connected with one end of described housing (2) and be fixedly connected with the other end of described housing (2), it is characterized in that, also comprise:
Fixed cover is located at first filter core (4) of the tubular of described enclosure interior, one end of described first filter core (4) and described top cover (1) are tightly connected and the other end and described base (3) are tightly connected, and form the first cavity (8) between the inwall of described first filter core (4) and described housing (2);
Fixed cover is located at second filter core (5) of the inner tubular of described first filter core (4), one end of described second filter core (5) and described top cover (1) are tightly connected and the other end and described base (3) are tightly connected, form the second cavity (9) between described first filter core (4) and described second filter core (5), the hollow space of described second filter core (9) is the 3rd cavity (10);
Described base (3) or housing (2) offer the first-class through hole (6) be communicated with described first cavity (8), and described base (3) offers the second through hole (7) be communicated with described 3rd cavity (9).
2. multi-bed filter according to claim 1, it is characterized in that, comprise at least one in the 3rd pressure-detecting device (13) of the first pressure-detecting device (11) measuring described first cavity (8) internal pressure, the second pressure-detecting device (12) measuring described second cavity (9) internal pressure and described 3rd cavity (10) internal pressure of measurement further.
3. multi-bed filter according to claim 2, it is characterized in that, described first pressure-detecting device (11) is for being installed on the pressure transducer on described base (3) or housing (2), described base (2) or housing (3) offer the first pressure tap (6) be communicated with described first cavity (8), and described first pressure-detecting device (11) is connected with described first pressure tap (14);
Described second pressure-detecting device (12) and described 3rd pressure-detecting device (13) are for being installed on the pressure transducer on base (3), described base (3) offers the second pressure tap (15) be communicated with described second cavity (9) and the 3rd pressure tap (16) be communicated with described 3rd cavity (10), described second pressure-detecting device (12) is connected with described second pressure tap (15), and described 3rd pressure-detecting device (13) is connected (16) with described 3rd pressure tap.
4. the multi-bed filter according to claims 1 to 3 any one, it is characterized in that, described top cover (1) middle part offers the through hole that internal diameter is greater than described second filter core (5) external diameter, described multi-bed filter comprises the tegillum (17) be sealed and matched with described through hole further, and described tegillum (17) is tightly connected with described top cover (1) is dismountable.
5. multi-bed filter according to claim 4, it is characterized in that, described tegillum (17) is connected by bolt (19) with described top cover (1), and is provided with seal ring (18) between described top cover (1) and described tegillum (17).
6. the multi-bed filter according to claims 1 to 3 any one, it is characterized in that, described housing (2) inside comprises the first filter core support (20) and the second filter core support (21) further, described first filter core support (20) and the second filter core support (21) all one end and described top cover (1) are tightly connected, the other end is fixedly connected with described base (3), and described first filter core support (20) supports described first filter core (4), described second filter core support (21) supports described second filter core (5).
7. multi-bed filter according to claim 6, is characterized in that, described base (3) is threaded with described first filter core support (20) and described second filter core support (21) respectively.
8. multi-bed filter according to claim 6, is characterized in that, described first filter core support (20) is wire netting or net formula filter core, and described second filter core support (21) is wire netting or net formula filter core.
9. multi-bed filter according to claim 6, it is characterized in that, described first filter core (4) is positioned over described first filter core support (20) outside, and described second filter core (5) is positioned over described second filter core support (21) outside.
10. multi-bed filter according to claim 1, it is characterized in that, the hole of described first filter core (4) is greater than the hole of described second filter core (5), described first-class through hole (6) is inlet opening, and described second through hole (7) is liquid outlet opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555699.3U CN204099346U (en) | 2014-09-25 | 2014-09-25 | Multi-bed filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555699.3U CN204099346U (en) | 2014-09-25 | 2014-09-25 | Multi-bed filter |
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| CN204099346U true CN204099346U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420555699.3U Expired - Fee Related CN204099346U (en) | 2014-09-25 | 2014-09-25 | Multi-bed filter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840588A (en) * | 2016-04-28 | 2016-08-10 | 江苏永钢集团有限公司 | Hydraulic tube oil filter device |
| CN108568499A (en) * | 2018-04-27 | 2018-09-25 | 宁夏共享机床辅机有限公司 | A kind of device of intelligent filtering cast paint |
| CN109798282A (en) * | 2019-01-25 | 2019-05-24 | 鼎斯（上海）液压科技有限公司 | Filter pumping hole valve block device and control method |
| CN113639369A (en) * | 2021-08-10 | 2021-11-12 | 苏州华迪医疗科技有限公司 | Medical air purification equipment |
| CN117249153A (en) * | 2023-10-10 | 2023-12-19 | 德州市力强液压机具有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
-
2014
- 2014-09-25 CN CN201420555699.3U patent/CN204099346U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840588A (en) * | 2016-04-28 | 2016-08-10 | 江苏永钢集团有限公司 | Hydraulic tube oil filter device |
| CN108568499A (en) * | 2018-04-27 | 2018-09-25 | 宁夏共享机床辅机有限公司 | A kind of device of intelligent filtering cast paint |
| CN109798282A (en) * | 2019-01-25 | 2019-05-24 | 鼎斯（上海）液压科技有限公司 | Filter pumping hole valve block device and control method |
| CN113639369A (en) * | 2021-08-10 | 2021-11-12 | 苏州华迪医疗科技有限公司 | Medical air purification equipment |
| CN113639369B (en) * | 2021-08-10 | 2022-10-04 | 苏州华迪医疗科技有限公司 | Medical air purification equipment |
| CN117249153A (en) * | 2023-10-10 | 2023-12-19 | 德州市力强液压机具有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
| CN117249153B (en) * | 2023-10-10 | 2024-04-02 | 沂水冠元液压机械有限公司 | Hydraulic oil filter equipment for hydraulic equipment |
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