CN115253427A

CN115253427A - Backwashing filter element for hydraulic support

Info

Publication number: CN115253427A
Application number: CN202210827158.0A
Authority: CN
Inventors: 孟凡文; 冯自航; 宋德全
Original assignee: Xinxiang Jinchen Filtration Co ltd
Current assignee: Xinxiang Jinchen Filtration Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-11-01

Abstract

The invention relates to the technical field of a hydraulic support backwashing filter device, in particular to a backwashing filter element for a hydraulic support, which comprises an inner framework, an outer framework, a filter layer, an upper end cover and a lower end cover, wherein the filter layer is arranged between the inner framework and the outer framework, four layers of stainless steel woven nets with different precisions are overlapped together, and the backwashing filter element is manufactured by pressurizing, rolling and vacuum sintering at the temperature of over 1200 ℃.

Description

Backwashing filter element for hydraulic support

Technical Field

The invention relates to the technical field of backwashing filter equipment through a hydraulic support, in particular to a backwashing filter element for the hydraulic support.

Background

In the coal mining and excavating process, the cleanliness of a transmission power medium-emulsion of a hydraulic support is an important factor about whether the hydraulic support can work normally, and an automatic backwashing filter element arranged in the hydraulic support is a core part for ensuring the cleanliness of the emulsion; the backwashing filter element has the advantages of high bearing pressure, small resistance, repeated washing, simple installation, convenient replacement, low product cost, good filtering effect and excellent effect of filtering solid particle pollutants in emulsion.

Under the service environment that system operating pressure is high to be more than or equal to 3.2MPa, only bond with the adhesive and easily drop at high pressure difference environment lower end cover between traditional filter core end cover and the skeleton filtering layer, the filter core can often face the condition that the emulsion of high pressure difference, high flow passes through in the use in the face of in the twinkling of an eye in addition, traditional filter core is easy to take place the deformation when facing this kind of situation, influence the normal use of filter, thereby influence filtration system's filter effect, traditional filter core still has in addition can not wash repeatedly and the back flush in-process variability not enough.

Disclosure of Invention

In order to solve the problems, the invention provides a backwash filter element for a hydraulic support, which comprises an inner framework, an outer framework, a filter layer, an upper end cover, a lower end cover and the filter layer arranged between the inner framework and the outer framework, wherein four layers of stainless steel woven meshes with different precisions are alternately overlapped together, and the backwash filter element is manufactured by pressurizing, rolling and vacuum sintering at the temperature of more than 1200 ℃.

The invention provides a backwashing filter element for a hydraulic support to solve the problems, which comprises

The filter comprises an inner framework, a filter core and a filter core, wherein the inner framework is a hollow cylinder with two open ends, a plurality of inner filter holes are uniformly formed in the inner framework, and internal threads are arranged at two ends of the inner wall of the inner framework;

the outer framework is a hollow cylinder with two open ends, a plurality of outer filtering holes are uniformly formed in the outer framework, and the outer framework is fixedly sleeved outside the inner framework;

the filtering layer is arranged between the inner framework and the outer framework and comprises a plurality of layers of filter screens, the layers of filter screens are sleeved outside the inner framework layer by layer, and the precision of the filter screens is improved layer by layer from outside to inside;

the spring penetrates through the inner part of the inner framework;

the upper end cover is connected to one end of the inner framework in a threaded manner, and a water outlet joint is fixedly arranged on the upper end cover;

and the lower end cover is in threaded connection with the other end fixedly connected inside.

As a further scheme of the backwash filter element for the hydraulic support, the upper end cover and the lower end cover are both fixedly provided with threaded joints for connecting with the inner framework, and the threaded joints of the upper end cover are provided with through holes communicated with the water outlet joint.

As a further scheme of the backwash filter element for the hydraulic support, two ends of the inner framework are reinforced and sealed with the upper end cover and the lower end cover through adhesives.

As a further scheme of the backwash filter element for the hydraulic support, rubber grooves are formed in the upper end cover and the lower end cover, the rubber grooves are circular grooves, and the threaded joints are located in the rubber grooves and in the centers of the rubber grooves.

As a further scheme of the backwash filter element for the hydraulic support, the inner diameter of the rubber groove is not smaller than the outer diameter of the outer framework, so that when the upper end cover and the lower end cover are both arranged on the inner framework, two ends of the outer framework are respectively positioned in the two rubber grooves.

As a further scheme of the backwash filter element for the hydraulic support, internal threads at two ends of the inner framework are both at least 5mm.

As a further scheme of the backwash filter element for the hydraulic support, the filter screen is a stainless steel woven screen, and the filter layer is formed by overlapping, crossing and stacking a plurality of layers of filter screens layer by layer, pressurizing, rolling and vacuum sintering at the temperature of over 1200 ℃.

As a further scheme of the backwash filter element for the hydraulic support, the filter screen is 4 layers.

As a further scheme of the backwash filter element for the hydraulic support, the outer ring of the spring is attached to the inner wall of the inner framework.

As a further scheme of the backwash filter element for the hydraulic support, the thickness of the inner framework and the thickness of the outer framework are at least 3mm, and the specification of the outer filter holes is larger than that of the inner filter holes.

Advantageous effects

1. The upper end cover and the lower end cover are installed at two ends of the filter element in a threaded connection mode and are sealed and reinforced through an adhesive, so that the phenomenon that the end covers fall off in a high-pressure environment is effectively avoided; 2. the upper end cover and the lower end cover are in threaded connection with the two ends of the filter element, so that the length of the filter element can be adjusted in a micro-scale manner; 3. the filter layer comprises a plurality of filter screens, and the filter screens are subjected to pressurization, rolling and vacuum sintering at the temperature of more than 1200 ℃ after being stacked in an intersecting manner, so that the finally formed filter screen has the advantages of high filtering precision, small resistance, repeated washing and high pressure difference resistance and no deformation; 4. the spring is arranged in the inner framework, the spring can enhance the overall strength of the filter element, and the filter element can meet the strength requirement required by the system even if the filter element passes through the emulsion with instantaneous high pressure difference and high flow; 5. the filter element and the filter base are in threaded connection, so that the filter is convenient to disassemble, assemble and replace.

Drawings

FIG. 1 is an exploded view of a backwash filter cartridge;

in the figure: 1. inner frame, 2, outer frame, 3, filtering layer, 4, spring, 5, upper end cover, 6, lower end cover, 7, water outlet joint, 8, screwed joint, 9, gluey groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

As shown in fig. 1: the utility model provides a back flush filter core for hydraulic support, includes inner frame 1, outer skeleton 2, filtering layer 3, spring 4, upper end cover 5 and lower end cover 6, inner frame 1 is the open hollow cylinder in both ends, and a plurality of interior filtration pores have evenly been seted up on the surface of inner frame 1, and the both ends of the inner wall of inner frame 1 all are provided with the internal thread, and the internal thread at inner frame 1 both ends is used for connecting upper end cover 5 and lower end cover 6 respectively, and spring 4 is worn to be equipped with inside inner frame 1, the external diameter of spring 4 slightly is greater than or equal to inner diameter of inner frame 1, and spring 4 can spiral penetrate inner frame 1's inner wall, and its outer lane pastes the inner wall of inner frame 1 when spring 4 is installed at inner frame 1, and spring 4 is used for improving inner frame 1's intensity, even there is the filter core in the use in the high pressure difference in the twinkling of an eye, the emulsion of an eye of a high flow passes through, also can accord with the system completely to the filter core indeformable, connect reliable's filtering performance requirement between each part.

Outer skeleton 2 is the open hollow cylinder in both ends, and a plurality of outer filtration pores have evenly been seted up on outer skeleton 2's surface, and outer skeleton 2 fixed cover is established in inner frame 1's outside, and preferably, outer skeleton 2 and inner frame 1 are the stainless steel seamless steel pipe drilling that thickness is 3mm at least and form, and outer skeleton 2 and inner frame 1 compressive strength and skeleton circularity all need satisfy the requirement, the specification of outer filtration pore is greater than the specification of inner frame 1 on outer skeleton 2. The utility model discloses a filter bed, including skeleton 1, filtering layer 3 sets up between skeleton 2, and filtering layer 3 includes a plurality of layers of filter screen, and the multilayer filter screen is cylindrical structure, and multilayer filter screen successive layer cover is established in skeleton 1's outside, also constantly promotes thereupon by the precision of filter screen within outer, the filter screen is stainless steel mesh grid, and multilayer filter screen successive layer cover is established and alternately stacks the back, through pressurization, rolling and adopt vacuum sintering more than 1200 ℃, finally form in this scheme filtering layer 3, filtering layer 3 is with the thin filter screen of outer coarse strainer cladding inlayer for filtering layer 3 can the layering filtration pollution's flotation liquid, and the filtering screen of sintering treatment has that the filter accuracy is high, the resistance is little, can wash repeatedly and the indeformable advantage of high pressure resistant difference, filtering layer 3 preferred in this scheme is made by the filter screen of 4 layers of different precisions, and more or less filter screens of the number of piles can be selected as required in the in-service use make filtering layer 3.

The water outlet joint 7 and the threaded joint 8 are fixedly arranged on two sides of the upper end cover 5 respectively, the upper end cover 5 is in threaded connection with one end of the inner framework 1 through the threaded joint 8, and a through hole is formed between the threaded joint 8 on the upper end cover 5 and the water outlet joint 7 on the cover body. And a threaded joint 8 is also fixedly arranged on one side surface of the lower end cover 6, and the lower end cover 6 is in threaded connection with the other end of the inner framework 1 through the threaded joint 8 on the cover body. The internal thread at 1 both ends of inner frame all is 5mm at least, and the internal thread structure of 1 inside processing of inner frame not only can increase its and upper end cover 5 and lower end cover 6's firm in connection degree, still can adjust the whole height of filter core through adjusting upper end cover 5,

lower end cover

6 and 1 threaded connection's of inner frame spiral length of closing. The outside of the water outlet joint 7 is provided with external threads, the water outlet joint 7 and the filter base are in threaded connection, the end face of the water outlet joint 7 is also provided with a sealing gasket for sealing seams, no polluted liquid is leaked from a bypass at the joint in the use process, and the filter element is only required to be unscrewed from the filter base during replacement.

Between upper end cover 5 and the inner frame 1, still all consolidate through the adhesive and seal between lower extreme cover 6 and the inner frame 1, the adhesive can not only further guarantee the reliability of connection, still can seal the junction. Rubber groove 9 has all been seted up to one side that upper end cover 5 and lower end cover 6 set up threaded joint 8, and rubber groove 9 is circular groove, and threaded joint 8 corresponds the central point that is in rubber groove 9 and puts, and threaded joint 8 is coaxial with rubber groove 9, the internal diameter of rubber groove 9 is not less than the external diameter of exoskeleton 2, and when upper end cover 5 and lower end cover 6 were installed on inner frame 1, two rubber grooves 9 were embedded respectively in the both ends of exoskeleton 2.

The assembly and use principle of the device is as follows: cleaning each part before assembly, ensuring that the surface of each part has no dirt, no burr and no sharp angle, avoiding causing secondary pollution to a system, sleeving a sintered filter layer 3 outside an inner framework 1, enabling the sintered filter layer to tightly wrap the inner framework 1, performing straight seam welding at the interface of the inner framework 1 and the outer framework, sleeving an outer framework 2 outside the inner framework 1, performing straight seam welding at the interface of the outer framework 2 and the filter layer 3, aligning the filter layer 3 with the welding seams of the inner framework 1 and the outer framework 2, selecting a spring 4 into the inner framework 1, ensuring that the end surface of the spring 4 is in a proper distance which does not influence the normal use of a filter element with the end surface of the inner framework 1, coating thread fastening glue at the threaded joint 8 of an upper end cover 5 and a lower end cover 6 and the internal thread of the inner framework 1, adding an adhesive into a glue groove 9 of the upper end cover 5, ensuring that the height of the adhesive occupies 2/3 of the glue groove 9, connecting the inner framework 1, the filter layer 3 and the outer framework 2 with the other end of the upper end cover 5 by the same method, and connecting the upper end of the inner framework 1 with the inner framework 1 by using the same method. When the device is used, the water outlet interface and the filter base are in threaded connection, the polluted liquid cannot be leaked from the bypass of the joint in the use process, and when the filter element needs to be replaced, the filter element is only required to be unscrewed from the filter base.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a back flush filter core for hydraulic support which characterized in that: comprises that

The filter screen comprises an inner framework (1), wherein the inner framework (1) is a hollow cylinder with two open ends, a plurality of inner filter holes are uniformly formed in the inner framework (1), and internal threads are arranged at two ends of the inner wall of the inner framework (1);

the outer framework (2) is a hollow cylinder with two open ends, a plurality of outer filtering holes are uniformly formed in the outer framework (2), and the outer framework (2) is fixedly sleeved outside the inner framework (1);

the filtering layer (3) is arranged between the inner framework (1) and the outer framework (2), the filtering layer (3) comprises multiple layers of filtering nets, the multiple layers of filtering nets are sleeved outside the inner framework (1) layer by layer, and the precision of the filtering nets is improved layer by layer from outside to inside;

the spring (4) penetrates through the inner framework (1);

the upper end cover (5) is in threaded connection with one end of the inner framework (1), and a water outlet connector (7) is fixedly arranged on the upper end cover (5);

and the lower end cover (6) is in threaded connection with the other end fixedly connected inside.

2. The backwash filter cartridge for a hydraulic support as defined in claim 1, wherein: the upper end cover (5) and the lower end cover (6) are respectively and fixedly provided with a threaded joint (8) connected with the inner framework (1), and the threaded joint (8) of the upper end cover (5) is provided with a through hole communicated with the water outlet joint (7).

3. The backwash filter cartridge for a hydraulic support as defined in claim 2, wherein: and the two ends of the inner framework (1) are reinforced and sealed with the upper end cover (5) and the lower end cover (6) through adhesives.

4. The backwash filter cartridge for a hydraulic support as set forth in claim 3, wherein: the upper end cover (5) and the lower end cover (6) are both provided with a rubber groove (9), the rubber groove (9) is a circular groove, and the threaded joint (8) is positioned in the rubber groove (9) and is positioned at the center of the rubber groove (9).

5. The backwash filter element for a hydraulic support as set forth in claim 4, wherein: when the inner diameter of the rubber groove (9) is not smaller than the outer diameter of the outer framework (2) so that the upper end cover (5) and the lower end cover (6) are both installed on the inner framework (1), two ends of the outer framework (2) are respectively located in the two rubber grooves (9).

6. The backwash filter cartridge for a hydraulic support as defined in claim 2, wherein: the internal threads at the two ends of the inner framework (1) are at least 5mm.

7. The backwash filter element for a hydraulic support as set forth in claim 1, wherein: the filter screen is a stainless steel woven mesh, and the filter layer (3) is formed by sleeving, crossing and stacking a plurality of layers of filter screens layer by layer, pressurizing, rolling and vacuum sintering at the temperature of over 1200 ℃.

8. The backwash filter element for a hydraulic support as set forth in claim 7, wherein: the filter screen is 4 layers.

9. The backwash filter cartridge for a hydraulic support as defined in claim 1, wherein: the outer ring of the spring (4) is attached to the inner wall of the inner framework (1).

10. The backwash filter cartridge for a hydraulic support as defined in claim 1, wherein: the thickness of the inner framework (1) and the outer framework (2) is at least 3mm, and the specification of the outer filtering holes is larger than that of the inner filtering holes.