CN210343929U

CN210343929U - Multilayer filter device for hydraulic station

Info

Publication number: CN210343929U
Application number: CN201921531186.8U
Authority: CN
Inventors: 孟庆杰; 刘涛; 刘辉; 王圣章
Original assignee: Shandong Iron and Steel Co Ltd
Current assignee: Shandong Iron and Steel Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-04-17
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a hydraulic pressure is multilayer filter equipment for station, including the filtration main part that is equipped with oil inlet and oil-out, still include the inlet with the cartridge valve of oil inlet intercommunication, the liquid outlet of cartridge valve with the oil-out intercommunication. The utility model discloses a set up the colating and strain double-deck filter core with the essence and reduce fluid pollution degree, through setting up cartridge valve and draining passageway, can guarantee when the filter core blocks up, can in time release to guarantee that inner circulation system is stable, this filter equipment convenient to use, stable performance.

Description

Multilayer filter device for hydraulic station

Technical Field

The utility model relates to a hydraulic pressure filters the field, especially involves a high multilayer filter equipment of reliability for hydraulic pressure station inner loop.

Background

And in a hydraulic system pump station, an internal circulation system is used for filtering hydraulic oil. The hydraulic system who newly assembles the debugging or the hydraulic system who is using is through overhauing the transformation back, contains a large amount of impurity in the hydraulic oil, when the individual layer filter equipment who uses single filter core filters, and large granule impurity blocks up the filter core phenomenon in the short time often appears, does not exert its filtering action, just abandons the filter core of more renewing, has caused the waste, also does not do benefit to the control of hydraulic system fluid cleanliness. The filter with coarse and fine layers is often adopted to filter hydraulic oil, so that the waste of filter elements is reduced to a certain extent, and the filtering effect is improved.

However, after the existing multilayer filter is blocked, the problems of unstable flow, unstable internal circulation system, poor reliability and the like are obvious because the pressure is not released in time.

Disclosure of Invention

The utility model discloses to prior art's is not enough, provides a hydraulic pressure is multilayer filter equipment for station, reduces the fluid pollution degree through double-deck filter core, if the jam appears simultaneously can in time the pressure release, guarantees that inner circulation system is stable, simple structure moreover.

The utility model discloses a through following technical scheme realizes, provide a hydraulic pressure is multilayer filter equipment for station, including the filtration main part that is equipped with oil inlet and oil-out, still include the inlet with the cartridge valve of oil inlet intercommunication, the liquid outlet of cartridge valve with the oil-out intercommunication.

This scheme lets in from the oil inlet when using and treats the filter hydraulic oil, and hydraulic oil flows through the oil-out after the filtration of filtering the main part, realizes the filtration to hydraulic oil, if because impurity too much and when leading to filtering the filter core jam of main part, treats the pressure increase of filtering hydraulic oil and opens the cartridge valve, makes hydraulic oil directly flow by the oil-out through the cartridge valve, realizes timely pressure release.

As optimization, filter the main part and include the casing, set up the coarse strainer in the casing and set up in the lid of casing one end, the inlet pass through the oil feed chamber that forms between casing and the coarse strainer with the oil inlet intercommunication. The filter main body of the optimized scheme has a simple structure and low manufacturing cost, and hydraulic oil enters the oil inlet cavity through the oil inlet, so that the contact area of the hydraulic oil and the coarse filter element is increased, and the filtering efficiency is improved; by arranging the cover body at the end part of the shell, hydraulic oil is prevented from directly flowing out of the end part of the shell without being filtered.

And as optimization, an oil drainage hole for installing the cartridge valve and an oil drainage channel for communicating the oil inlet cavity with the liquid inlet are formed in the cover body. According to the optimized scheme, the oil drainage hole is formed in the cover body, the mounting space is provided for the cartridge valve, the cartridge valve is located in the cover body, the occupied volume and the number of connecting pieces are reduced, the oil drainage channel is arranged in the cover body, the sealing effect is improved, and the sealing difficulty is reduced.

As optimization, the oil drainage hole penetrates through to the cover body and is far away from one surface of the filtering main body, and a plug is arranged at one end of the oil drainage hole, which is far away from the filtering main body. This optimization scheme is through setting up the plug, conveniently overhauls draining hole and cartridge valve.

As optimization, the device also comprises a fine filter element arranged in the inner cavity of the coarse filter element, and the liquid outlet is communicated with the oil outlet through the inner cavity of the fine filter element. This optimization scheme has improved filter accuracy through setting up the essence core, has further reduced the impurity in the hydraulic oil, and the inner chamber and the oil-out intercommunication of essence core are crossed to the liquid outlet, when taking place to block up, make hydraulic oil walk around the filtration of essence core and directly get into essence core inner chamber, avoid essence core to hinder the pressure release, make the pressure release more quick, timely.

Preferably, the cover body comprises a top cover detachably and fixedly connected with the shell and an inner cover fixedly inserted on the top cover, and the diameter of the part of the inner cover inserted into the top cover is larger than the outer diameter of the fine filter element and smaller than the inner diameter of the coarse filter element. This optimization scheme divide into detachable two parts with the lid, when only changing or maintaining the essence filter core, only need with the inner cup take apart can, and need not to pull down whole lid is whole, improved work efficiency.

As optimization, the oil drainage hole is arranged in the inner cover and communicated with the inner cavity of the fine filter core, the oil drainage channel comprises an oleophobic channel which is arranged in the top cover and communicated with the oil inlet cavity, and a liquid inlet hole which is arranged in the inner cover and communicated with the liquid inlet, and the liquid inlet hole is communicated with the oleophobic channel. This optimization scheme sets up the draining passageway that is linked together in with inner cup and top cap, avoids the whole filter equipment's of pipeline increase volume, and the integrated nature is better.

Preferably, the side surface of the inner cover in sliding connection with the top cover is provided with an annular groove which is closed along the circumferential direction, and the annular groove is communicated with the oleophobic channel and the liquid inlet hole. This optimization scheme makes the intercommunication in oleophobic passageway and feed liquor hole not receive the restriction of inner cup and the relative angle of top cap through setting up the ring channel, has reduced the installation degree of difficulty of inner cup and top cap.

Preferably, the oil dredging channel comprises an oil dredging hole communicated with the oil inlet cavity and an oil outlet hole communicated with the liquid inlet hole, and the oil dredging hole is perpendicular to and communicated with the oil outlet hole. This optimization scheme's oleophobic hole sets up with the oil outlet is perpendicular, makes things convenient for drilling processing, has reduced the processing degree of difficulty.

Preferably, the inner cover is provided with a flange connected with the top cover through a locking bolt, and a sealing gasket is arranged between the inner cover and the top cover. This optimization scheme passes through the locking bolt and is connected inner cup and top cap, and convenient dismantlement and installation have improved the convenience of installation locking bolt through setting up the flange, have improved sealed effect through setting up sealed the pad.

The utility model has the advantages that: through setting up the colating and straining double-deck filter core reduction fluid pollution degree with the essence, through setting up cartridge valve and draining passageway, can guarantee when the jam appears in the filter core, can in time release to guarantee that inner circulation system is stable, this filter equipment convenient to use, stable performance.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of a cover structure according to a second embodiment of the present invention.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

The first embodiment is as follows:

as shown in fig. 1, a multilayer filter device for a hydraulic station includes a filter body provided with an oil inlet 91 and an oil outlet 92. The filter body comprises a shell 5, a cover body fixedly connected with one end of the shell through threads, a base fixedly arranged at the other end of the shell, a rough filter element 6 arranged in the shell and a fine filter element 8 arranged in the inner cavity of the rough filter element. The base is provided with a filter head outer ring 141 fixedly connected with the shell through threads, a filter head middle ring 142 positioned in the filter head outer ring 141, and a filter head inner ring 143 positioned in the filter head middle ring 142. The filter head middle ring 142 is connected with an outer-layer filter element bracket 71 through threads, and a coarse filter element is sleeved and fixed on the outer-layer filter element bracket 71; the inner ring 143 of the filter head is connected with the inner filter element bracket 72 by screw thread, and the inner filter element bracket 72 is sleeved with the fine filter element 8.

An oil inlet cavity is formed between the shell and the coarse filter element, an oil outlet cavity is formed in the inner cavity of the fine filter element, and an oil inlet 91 communicated with the oil inlet cavity and an oil outlet 92 communicated with the oil outlet cavity are formed in the base. A first pressure sensor 121 extending to the passage 11 between the oil inlet and the oil inlet cavity is further inserted into the base, and a first oil hole 131 for the first pressure sensor to pass through is formed in the base. A second pressure sensor 122 extending to the cavity between the coarse filter element and the fine filter element is further inserted on the base, and a second oil hole 132 for the second pressure sensor to pass through is formed on the base. A third pressure sensor 123 extending to a passage between the oil outlet chamber and the oil outlet hole is further inserted in the base, and a third oil hole 133 for the third pressure sensor 123 to pass through is formed in the base.

The cover body comprises a top cover 1 detachably and fixedly connected with the shell and an inner cover 2 inserted and fixed on the top cover, and the diameter of the part of the inner cover inserted into the top cover is larger than the outer diameter of the fine filter element and smaller than the inner diameter of the coarse filter element. Specifically, a round hole is formed in the middle of a top cover 1, an inner cover 2 is installed in the round hole, the inner cover 2 and the top cover 1 are pressed through a sealing gasket 3 and a locking bolt 4 to prevent leakage, and a flange connected with the top cover through the locking bolt 4 is arranged on the inner cover; rubber ring 151 is placed between top cover 1 and outer filter element support 71, inner cover 2 and inner filter element support 72 between place rubber pad 152, hydraulic oil is kept apart with the top of outer filter element support 71 to inner filter element support 72.

When the internal circulation system of the hydraulic station is started, hydraulic oil containing a large amount of impurities enters the filter from the oil pump through the pipeline and the hydraulic oil with the pressure of P1 from the oil inlet 91 through the channel 11 between the oil inlet and the oil inlet cavity, and the first pressure sensor 121 detects the pressure P1. The hydraulic oil is firstly subjected to coarse filtration by the coarse filter element 6, a part of large-particle impurities are filtered, and the large-particle impurities enter the inner layer through the holes of the outer-layer filter element support 71. The second pressure sensor detects a pressure value p. The hydraulic oil is filtered by the fine filter element 8, reaches the middle of the filter from the inner filter element support 72, passes through the oil outlet 92, is changed into P2 in pressure, and flows out of the filter. The pressure P2 is detected by the third pressure sensor 123, P1 is greater than P2. Because of the double-deck filtration, in filtering process, avoided only being blockked up by large granule impurity in the one deck filter core short time, caused the condition that the filter core rate of utilization is low, extravagant. In the use process, the pollution condition of each filter element in the filter is judged according to the numerical values of P1, P and P2, the filter elements are replaced, and if the filter elements need to be replaced at the same time, the top cover is detached; if only the fine filter element 8 of the fine filter needs to be replaced, only the locking bolt 4 needs to be disassembled, and the inner cover is opened to replace the fine filter element 8.

The internal circulation oil pump supplies hydraulic oil, and the oil passing capacity of the filter is increased through multi-layer filtering.

Example two

The difference between the embodiment and the first embodiment is that the oil filter further comprises a liquid inlet and a cartridge valve 21 communicated with the oil inlet, the cartridge valve is a one-way cartridge valve, the opening pressure is set according to the alarm value of the filter element, the liquid outlet of the cartridge valve 21 is communicated with the oil outlet through an inner cavity of the fine filter element, and the liquid inlet is communicated with the oil inlet through an oil inlet cavity formed between the shell and the coarse filter element.

An oil drainage hole 20 for installing the cartridge valve and an oil drainage channel for communicating the oil inlet cavity with the liquid inlet are formed in the cover body. The oil drainage hole penetrates through the cover body to the side, away from the filtering main body, of the cover body, a screw plug 22 is arranged at one end, away from the filtering main body, of the oil drainage hole, and a through hole opposite to the pressure relief hole is formed in the rubber pad below the inner cover.

As the optimization scheme, the draining hole of this embodiment is seted up in inner cup 2 and is communicate with fine filter core inner chamber, the draining passageway is including seting up in the top cap and the oleophobic passageway of dredging with the oil feed chamber intercommunication to and set up in the inner cup and the feed liquor hole of dredging with the inlet, feed liquor hole and the oleophobic passageway intercommunication.

An annular groove 18 which is closed along the circumferential direction is formed in the side surface of the inner cover which is in sliding connection with the top cover, and the annular groove is communicated with the oleophobic channel and the liquid inlet hole 19. The oleophobic passageway includes the oleophobic hole 16 with the oil feed chamber intercommunication to and the oil outlet 17 with feed liquor hole 19 intercommunication, oil drain hole 16 is perpendicular and communicate with each other with oil outlet 17.

During filtering, if the impurities on the surface of the filter element are more and the filter element is blocked, hydraulic oil enters the cartridge valve through the oil dredging hole and the oil outlet hole and then the oil inlet hole of the annular groove, and after the cartridge valve is opened, the oil enters the hole of the rubber pad through the liquid outlet and is output from the oil outlet of the filtering device.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a hydraulic pressure station uses multilayer filter equipment, is including being equipped with the filter body of oil inlet (91) and oil-out (92), its characterized in that: the oil outlet of the oil inlet is communicated with the oil outlet through a liquid outlet of the cartridge valve (21).

2. The multi-layer filtering device for a hydraulic station as set forth in claim 1, wherein: the filter body comprises a shell (5), a coarse filter element (6) arranged in the shell and a cover body arranged at one end of the shell, and the liquid inlet is communicated with the oil inlet through an oil inlet cavity formed between the shell and the coarse filter element.

3. The multi-layer filtering device for a hydraulic station as set forth in claim 2, wherein: an oil drainage hole (20) for installing the cartridge valve and an oil drainage channel for communicating the oil inlet cavity with the liquid inlet are formed in the cover body.

4. A multi-layered filter assembly for a hydraulic station as set forth in claim 3, wherein: the oil drainage hole runs through to the cover body and is far away from the one side of filtering the main part, and is equipped with plug (22) in the one end that the oil drainage hole is far away from filtering the main part.

5. A multi-layered filter assembly for a hydraulic station as set forth in claim 3, wherein: the oil filter is characterized by further comprising a fine filter element (8) arranged in the inner cavity of the coarse filter element, and the liquid outlet is communicated with the oil outlet through the inner cavity of the fine filter element.

6. The multi-layer filtering device for a hydraulic station as set forth in claim 5, wherein: the cover body comprises a top cover (1) detachably and fixedly connected with the shell and an inner cover (2) fixedly inserted on the top cover, and the diameter of the part of the inner cover inserted into the top cover is larger than the outer diameter of the fine filter element and smaller than the inner diameter of the coarse filter element.

7. The multi-layer filtering device for a hydraulic station as set forth in claim 6, wherein: the draining hole is arranged in the inner cover (2) and communicated with the inner cavity of the fine filter core, and the draining channel comprises an oleophobic channel which is arranged in the top cover and communicated with the oil inlet cavity and a liquid inlet hole which is arranged in the inner cover and communicated with the liquid inlet.

8. The multi-layer filtering device for a hydraulic station as set forth in claim 7, wherein: an annular groove (18) which is closed along the circumferential direction is formed in the side face of the inner cover which is in sliding connection with the top cover, and the annular groove is communicated with the oleophobic channel and the liquid inlet hole (19).

9. The multi-layer filtering device for a hydraulic station as set forth in claim 7, wherein: the oleophobic passageway includes oleophobic hole (16) with the oil feed chamber intercommunication to and oil outlet (17) with feed liquor hole (19) intercommunication, oil drain hole (16) are perpendicular and communicate with each other with oil outlet (17).

10. The multi-layer filtering device for a hydraulic station as set forth in claim 6, wherein: the inner cover is provided with a flange connected with the top cover through a locking bolt (4), and a sealing gasket (3) is arranged between the inner cover and the top cover.