CN220395963U - Oil return filtering device for compressor - Google Patents

Abstract

The utility model relates to an oil return filtering device for a compressor, which belongs to the technical field of oil return filtering and comprises a shell, a central tube, an upper fixing assembly, a lower fixing assembly and a filter paper assembly, wherein the central tube is coaxially arranged in the shell, the filter paper assembly is arranged outside the central tube, the upper ends of the filter paper assembly and the central tube are both connected with the upper fixing assembly, the lower end of the filter paper assembly is connected with the lower fixing assembly, the filter paper assembly comprises a bending filter paper and a frame, the frame consists of an upper fixing ring, a lower fixing ring and a connecting clamping piece in the middle, two ends of the bending filter paper are respectively contacted with the upper fixing ring and the lower fixing ring, the connecting clamping piece is connected with the upper fixing ring and the lower fixing ring, a clamping groove is formed in the connecting clamping piece, one folded edge on the bending filter paper is clamped in the clamping groove, the designed structure is provided with the frame to install the bending filter paper, the stability of the bending filter paper can be kept, the defect that the filter paper is easy to loose when the filter paper is immersed in oil can be prevented, and the filter paper can be kept relatively stable without shaking.

Description

Oil return filtering device for compressor

Technical Field

The utility model belongs to the technical field of oil return filtration, and particularly relates to an oil return filtration device for a compressor.

Background

The air compressor filter adopts the pre-packaged configuration, only needs single power connection and compressed air connection, and is internally provided with a cooling system, so that the installation work is greatly simplified. The air compressor filter provides high-quality compressed air for various industries with the advantages of high efficiency, no maintenance, high reliability and the like. The screw compression assembly in the air compressor filter is manufactured inside the novel numerical control grinding machine and is matched with an on-line laser technology, so that the manufacturing tolerance is ensured to be accurate and incomparable. The reliability and performance of the compressor ensures that the running cost of the compressor is always very low during the service life. The trim compressor, the integral compressor, and the desiccant series are all new products in the series of compressors.

In the prior art, for example, the Chinese patent number is: the oil filter of CN204267430U comprises a body, a first oil filter cylinder, a valve core and a spanner, wherein the body is provided with an oil inlet, an oil outlet and a channel; the oil filter further comprises a second oil filter cylinder and a communicating pipe, the second oil filter cylinder is installed on the body, an oil exchanging port is formed in the body, a needle valve is arranged on the oil exchanging port, an oil inlet is formed in the second oil filter cylinder, a communicating elbow is arranged on the oil inlet, and the needle valve is communicated with the communicating elbow through the communicating pipe.

But there is a disadvantage in that the filter paper in the oil filter is unstable.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to solve the defect that the filter paper in the oil filter is unstable at present.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model relates to an oil return filtering device for a compressor, which comprises a shell, a central tube, an upper fixing assembly, a lower fixing assembly and a filter paper assembly, wherein the central tube is coaxially arranged in the shell, the filter paper assembly is arranged outside the central tube, the upper ends of the filter paper assembly and the central tube are both connected with the upper fixing assembly, the lower end of the filter paper assembly is connected with the lower fixing assembly, the upper fixing assembly is positioned in the shell, the lower fixing assembly is arranged at a port of the shell, the filter paper assembly comprises a bent filter paper and a frame, the frame consists of an upper fixing ring, a lower fixing ring and a middle connecting clamping piece, two ends of the bent filter paper are respectively contacted with the upper fixing ring and the lower fixing ring, the connecting clamping piece is connected with the upper fixing ring and the lower fixing ring, a clamping groove is formed in the connecting clamping piece, and one folded edge on the bent filter paper is clamped in the clamping groove.

Preferably, the fixing assembly comprises a fixing plate and a bypass valve, the bypass valve is mounted on the fixing plate, and the fixing plate is pressed on the central tube.

Preferably, the lower fixing component comprises a sealing ring, a bottom plate and a check valve, an oil inlet and an oil outlet are arranged on the bottom plate, filtered oil enters the shell from the oil inlet, passes through the filter paper component and then enters the central tube, the oil outlet is communicated with the central tube, the check valve is arranged at the oil outlet, the bottom plate is arranged at a port of the shell, and the sealing ring seals the joint of the bottom plate and the shell.

Preferably, a plurality of connecting clamping pieces are arranged between the upper fixing ring and the lower fixing ring, and the connecting clamping pieces are clamped with the bending filter paper.

Preferably, the inner wall of the folded filter paper is attached to the central tube, and the outer wall is attached to the inner wall of the outer shell.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the oil return filtering device for the compressor, the frame is arranged to install the bent filter paper, so that the bent filter paper can be kept stable, the defect that the bent filter paper is easy to loose when immersed in oil is avoided, the bent filter paper is clamped through the connecting clamping piece, and the filter paper can be kept relatively stable and cannot shake.

Drawings

FIG. 1 is a schematic view showing the overall structure of an oil return filtering apparatus for a compressor according to the present utility model

FIG. 2 is a schematic view showing a structure of a filter paper assembly of an oil return filtering apparatus for a compressor according to the present utility model;

FIG. 3 is a schematic view showing a structure of a frame of an oil return filtering apparatus for a compressor according to the present utility model;

FIG. 4 is an internal exploded view of an oil return filter for a compressor according to the present utility model

Reference numerals in the schematic drawings illustrate:

100. a housing;

200. a central tube;

300. an upper fixing assembly; 310. a fixing plate; 320. a bypass valve;

400. a lower fixing assembly; 410. a seal ring; 420. a bottom plate; 430. a check valve;

500. a filter paper assembly; 510. bending the filter paper; 520. a frame; 521. an upper fixing ring; 522. a lower fixing ring; 523. and the connecting clamping piece.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

Referring to fig. 1-4, an oil return filtering device for a compressor of the present embodiment includes a housing 100, a central tube 200, an upper fixing assembly 300, a lower fixing assembly 400 and a filter paper assembly 500, wherein the central tube 200 is coaxially installed in the housing 100, the filter paper assembly 500 is arranged outside the central tube 200, the upper ends of the filter paper assembly 500 and the central tube 200 are both connected with the upper fixing assembly 300, the lower end is connected with the lower fixing assembly 400, the upper fixing assembly 300 is located in the housing 100, the lower fixing assembly 400 is installed at a port of the housing 100, the filter paper assembly 500 includes a bent filter paper 510 and a frame 520, the frame 520 is composed of an upper fixing ring 521, a lower fixing ring 522 and a connecting clip 523 in the middle, both ends of the bent filter paper 510 are respectively contacted with the upper fixing ring 521 and the lower fixing ring 522, the connecting clip 523 is connected with the upper fixing ring 521 and the lower fixing ring 522, a clip groove is arranged on the connecting clip 523, and one folded edge on the bent filter paper 510 is clipped in the clip groove.

The fixing assembly of the present embodiment includes a fixing plate 310 and a bypass valve 320, the bypass valve 320 is mounted on the fixing plate 310, and the fixing plate 310 is pressed against the center tube 200.

The lower fixing assembly 400 of this embodiment includes a sealing ring 410, a bottom plate 420 and a check valve 430, the bottom plate 420 is provided with an oil inlet and an oil outlet, filtered oil enters the housing 100 from the oil inlet, passes through the filter paper assembly 500 and enters the central tube 200, the oil outlet is communicated with the central tube 200, the check valve 430 is installed at the oil outlet, the bottom plate 420 is installed at a port of the housing 100, and the sealing ring 410 seals a joint between the bottom plate 420 and the housing 100.

A plurality of connecting clamping pieces 523 are arranged between the upper fixing ring 521 and the lower fixing ring 522 of the embodiment, and the plurality of connecting clamping pieces 523 are clamped and connected with the bent filter paper 510.

The inner wall of the folded filter paper 510 of this embodiment is attached to the center tube 200, and the outer wall is attached to the inner wall of the housing 100.

The structure of this design is equipped with frame 520 and installs the filter paper 510 of buckling, can keep the stability of buckling filter paper 510 to and avoid soaking in the easy loose defect in oil, block the filter paper 510 of buckling through connecting fastener 523, can keep the relative stability of filter paper, can not rock.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (5)

1. An oil return filter device for a compressor, characterized in that: including shell (100), center tube (200), go up fixed subassembly (300), lower fixed subassembly (400) and filter paper subassembly (500), center tube (200) coaxial arrangement is in shell (100), filter paper subassembly (500) are equipped with outward to center tube (200), fixed subassembly (300) are all connected to the upper end of filter paper subassembly (500) and center tube (200), and fixed subassembly (400) down are connected to the lower extreme, go up fixed subassembly (300) and lie in shell (100), fixed subassembly (400) down install the port department at shell (100), filter paper subassembly (500) are including buckling filter paper (510) and frame (520), frame (520) are constituteed by connecting fastener (523) in the middle of last solid fixed ring (521) and lower solid fixed ring (522), connecting fastener (523) connect solid fixed ring (521) and lower solid fixed ring (522), be equipped with the draw-in groove on connecting fastener (523), a hem on filter paper (510).

2. An oil return filtering device for a compressor according to claim 1, characterized in that: the upper fixing assembly (300) comprises a fixing plate (310) and a bypass valve (320), wherein the bypass valve (320) is installed on the fixing plate (310), and the fixing plate (310) is pressed on the central tube (200).

3. An oil return filtering device for a compressor according to claim 1, characterized in that: the lower fixing assembly (400) comprises a sealing ring (410), a bottom plate (420) and a check valve (430), wherein an oil inlet and an oil outlet are formed in the bottom plate (420), filtered oil enters the shell (100) from the oil inlet, passes through the filter paper assembly (500) and then enters the central tube (200), the oil outlet is communicated with the central tube (200), the check valve (430) is arranged at the oil outlet, the bottom plate (420) is arranged at a port of the shell (100), and the sealing ring (410) seals the joint of the bottom plate (420) and the shell (100).

4. An oil return filtering device for a compressor according to claim 1, characterized in that: a plurality of connecting clamping pieces (523) are arranged between the upper fixing ring (521) and the lower fixing ring (522), and the connecting clamping pieces (523) are clamped and connected with the bent filter paper (510).

5. An oil return filtering device for a compressor according to claim 1, characterized in that: the inner wall of the bent filter paper (510) is attached to the central tube (200), and the outer wall is attached to the inner wall of the shell (100).