CN211513665U - Filtering structure and drilling fluid filter equipment - Google Patents

Abstract

The utility model provides a filtering structure and a drilling fluid filtering device, which belong to the technical field of drilling fluid filtering, the filtering structure comprises a shell component, a filtering screen and an impurity removing component, a liquid outlet pipe is arranged at the center of the bottom of a shell, a sewage discharge pipe is arranged at one side of the bottom of the shell, a first valve is fixedly arranged on the sewage discharge pipe, the filtering screen is fixedly arranged in the shell, a scraper blade is slidably sleeved on the filtering screen, the outer ring of the scraper blade is slidably and hermetically arranged with the inner wall of the shell, a telescopic member bolt is arranged at the top of the shell, a telescopic rod of the telescopic member is slidably and hermetically arranged in a through hole, the telescopic rod of the telescopic member is fixedly welded with the scraper blade, the device can not stop the filtering work of the drilling fluid to clean impurities on the surface of the filtering screen in the filtering process of, the filter screen does not need to be disassembled, the impurity removal operation is relatively simple and convenient, and the working efficiency is increased.

Description

Filtration structure and drilling fluid filtration device

technical field

The utility model relates to the technical field of drilling fluid filtering, in particular to a filtering structure and a drilling fluid filtering device.

Background technique

Drilling fluid usually needs to be recycled in drilling engineering. During the process of recycling drilling fluid, it is necessary to filter the drilling fluid to remove impurities in the used drilling fluid. The existing drilling fluid filter devices can filter the drilling fluid very well, but when these filter devices filter the drilling fluid, the filter screen is used for a long time, and impurities are easily accumulated on the screen surface, which eventually leads to the blockage of the filter screen. It is more troublesome to clean the impurities on the filter net, and it will delay the drilling fluid filtration work.

Utility model content

In order to make up for the above deficiencies, the utility model provides a filtering structure and a drilling fluid filtering device, aiming at improving the problem of inconvenient cleaning of impurities on the filtering screen.

The utility model is realized in this way:

A filter structure includes a shell component, a filter screen and an impurity removal component.

The casing assembly includes a casing, a liquid inlet pipe, a liquid outlet pipe and a sewage discharge pipe, the liquid inlet pipe is arranged on the side of the casing, the liquid outlet pipe is arranged at the bottom center of the casing, and the A sewage pipe is arranged on one side of the bottom of the casing, a first valve is fixedly installed on the sewage pipe, and a through hole is opened on the top of the casing.

The filter screen includes a screen part and a sealing part, and the filter screen is fixedly installed inside the casing.

The impurity removal component includes a scraper and a telescopic piece, the scraper is configured as an annular plate, the scraper is slidably sleeved on the filter screen, and the outer ring of the scraper is slidably sealed with the inner wall of the casing For installation, the telescopic element is bolted on the top of the casing, the telescopic rod of the telescopic element is slidably and sealedly installed in the through hole, and the telescopic rod of the telescopic element is fixedly welded to the scraper.

In an embodiment of the present invention, the top of the casing is provided with a first cover plate, the bottom of the casing is provided with a second cover plate, the first cover plate and the second cover plate They are all fixed to the casing by bolts, the through hole is arranged on the first cover plate, the liquid outlet pipe is arranged in the center of the second cover plate, and the sewage pipe is arranged on the second cover plate. side of the cover.

In an embodiment of the present invention, rubber pads are arranged between the first cover plate, the second cover plate and the casing.

In an embodiment of the present invention, an inclined portion is provided at one end of the casing close to the second cover plate.

In an embodiment of the present invention, an air inlet pipe is arranged on the inclined portion, and a second valve is fixedly installed on the air inlet pipe.

In an embodiment of the present invention, a rubber ring is arranged in the through hole, and the rubber ring is configured to increase the sealing performance between the through hole and the telescopic rod of the telescopic element.

In an embodiment of the present invention, the outer ring of the scraper is fixed and glued with a rubber ring.

In an embodiment of the present invention, the scraper is provided with an installation hole, and a check valve is fixedly installed in the installation hole.

In an embodiment of the present invention, the telescopic elements are fixedly mounted on the first cover plate, and two telescopic elements are symmetrically arranged on the first cover plate.

The embodiment of the present utility model further provides a drilling fluid filtering device, comprising the above filtering structure and a water pump, wherein the liquid outlet of the water pump is communicated with the liquid inlet pipe.

The beneficial effects of the utility model are as follows: the utility model obtains a filtering structure and a drilling fluid filtering device through the above design, when in use, the scraper is pushed by the telescopic rod of the telescopic piece, the scraper moves down, and the filter net is removed. The accumulated impurities are cleaned up. When the scraper reaches the inclined part, the scraper is sealed with the inclined part and the sealing part. The drilling fluid containing a large amount of impurities between the scraper and the bottom of the casing is discharged through the first valve. After the impurities are discharged, The scraper is reset by the telescopic piece, the device can clean the impurities on the surface of the filter without stopping the filtration of the drilling fluid during the filtration process of the drilling fluid, without disassembling the filter, the operation is relatively simple, and the work efficiency is increased. .

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

1 is a schematic diagram of the internal structure of a filter structure provided by an embodiment of the present invention;

2 is a schematic structural diagram of an external component provided by an embodiment of the present invention;

3 is a schematic structural diagram of a filter screen provided by an embodiment of the present invention;

4 is a schematic structural diagram of a scraper provided by an embodiment of the present invention;

5 is a schematic top-view structural diagram of a scraper provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a drilling fluid filtering device provided by an embodiment of the present invention.

In the figure: 100 - shell assembly; 110 - shell; 111 - liquid inlet pipe; 112 - inclined part; 113 - intake pipe; 1131 - second valve; 120 - first cover plate; 121 - through hole; 130 - first Two cover plates; 131-rubber pad; 132-liquid outlet pipe; 133-sewage pipe; 1331-first valve; 200-filter screen; 210-screen part; 220-sealing part; Scraper; 320 - telescopic piece; 311 - one-way valve; 312 - rubber ring; 400 - water pump.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments of the present invention are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" etc. Or the positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, so it cannot be construed as a limitation to the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Example

Referring to FIG. 1 , the present invention provides a technical solution: a filter structure, including a housing assembly 100 , a filter screen 200 and an impurity removal assembly 300 .

Referring to FIG. 2 , the housing assembly 100 includes a casing 110 , a liquid inlet pipe 111 , a liquid outlet pipe 132 and a sewage discharge pipe 133 . The liquid inlet pipe 111 is arranged on the side of the casing 110 and is used for entering the interior of the casing 110 to be filtered. The liquid outlet pipe 132 is arranged at the bottom center of the casing 110 to discharge the filtered drilling fluid, and the sewage pipe 133 is arranged at the bottom side of the casing 110 to remove the impurities inside the casing 110. For discharge, the sewage pipe 133 is fixedly installed with a first valve 1331 to control the opening and closing of the sewage pipe 133 , the top of the casing 110 is provided with a through hole 121 , the top of the casing 110 is provided with a first cover plate 120 , and the casing 110 A second cover plate 130 is provided at the bottom of the fuselage. Both the first cover plate 120 and the second cover plate 130 are fixedly mounted on the casing 110 by bolts. It is disassembled to facilitate the installation of the casing assembly 100 and facilitate the cleaning, repair and maintenance of the interior of the casing assembly 100. The through hole 121 is arranged on the first cover plate 120, and the liquid outlet pipe 132 is arranged in the center of the second cover plate 130. The sewage pipe 133 is arranged on one side of the second cover plate 130. During the specific setting, rubber pads 131 are arranged between the first cover plate 120, the second cover plate 130 and the casing 110. The rubber pads 131 are arranged so that the The first cover plate 120 , the second cover plate 130 and the casing 110 have good sealing performance.

In some specific embodiments, an inclined portion 112 is provided at one end of the housing 110 close to the second cover plate 130 , and the scraper 310 moves downward to clean the surface of the filter screen 200 . When the scraper 310 moves to the sealing portion 220 , The scraper 310 and the inclined portion 112 are pressed and sealed to increase the sealing effect between the scraper 310 and the casing 110 .

In other embodiments, the inclined portion 112 is provided with an air intake pipe 113 , and a second valve 1131 is fixedly installed on the air intake pipe 113 . The speed of discharge.

Referring to FIG. 3 , the filter screen 200 includes a screen screen part 210 and a sealing part 220 , the filter screen 200 is fixedly installed inside the casing 110 , and the filter screen 200 is used for filtering the drilling fluid.

Please refer to FIG. 4 and FIG. 5 , the impurity removal assembly 300 includes a scraper 310 and a telescopic piece 320. In the specific setting, the telescopic piece 320 can be any one of an air cylinder, an electric push rod, a hydraulic cylinder and a screw rod. The scraper 310 is set as an annular plate, the scraper 310 is slidably sleeved on the filter screen 200, the outer ring of the scraper 310 is slidably sealed with the inner wall of the housing 110, and the outer ring of the scraper 310 is fixed and glued with a rubber ring 312, and the rubber ring 312 The setting increases the sealing between the scraper 310 and the casing 110 and reduces the impurities passing through the scraper 310. The telescopic piece 320 is bolted on the top of the casing 110, the telescopic piece 320 is fixedly installed on the first cover 120, and the telescopic piece 320 is symmetrically arranged on the first cover plate 120. The arrangement of the two telescopic pieces 320 makes the scraper 310 move smoothly. The rubber ring is configured to increase the tightness between the through hole 121 and the telescopic rod of the telescopic element 320 , and the telescopic rod of the telescopic element 320 is fixedly welded to the scraper 310 .

In some specific embodiments, the scraper 310 is provided with a mounting hole, and a one-way valve 311 is fixedly installed in the mounting hole. When the scraper 310 moves down, the one-way valve 311 is closed to prevent the drilling fluid containing impurities from passing through the scraper 310, When the scraper 310 moves up, the one-way valve 311 is opened, so that the drilling fluid above the scraper 310 passes through the scraper 310 to avoid accumulation of impurities above the scraper 310 when the scraper 310 is reset.

Referring to FIG. 6 , the embodiment of the present invention further provides a drilling fluid filtering device, which includes the above-mentioned filtering structure and a water pump 400 . The liquid outlet of the water pump 400 is connected to the liquid inlet pipe 111 , and the liquid inlet of the water pump 400 is connected to the drilling rig. , the drilling fluid to be filtered generated by the drilling rig is passed into the filtering structure for filtering.

Working principle: During use, the drilling fluid to be filtered is passed into the casing 110 through the liquid inlet pipe 111 through the water pump 400, the drilling fluid is filtered through the filter screen 200, and the filtered drilling fluid is passed into the drilling rig through the liquid outlet pipe 132. Circular work is carried out. When there are many impurities on the surface of the filter screen 200, the scraper 310 is pushed by the telescopic rod of the control telescopic element 320, and the scraper 310 moves downward to clean the impurities accumulated on the filter screen 200. The scraper 310 When reaching the inclined part 112, the scraper 310 is sealed with the inclined part 112 and the sealing part 220. The drilling fluid containing a large amount of impurities between the scraper 310 and the bottom of the casing 110 is discharged through the first valve 1331. The retractable member 320 resets the scraper 310 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A filter structure, comprising

The device comprises a shell assembly (100), wherein the shell assembly (100) comprises a shell (110), a liquid inlet pipe (111), a liquid outlet pipe (132) and a sewage discharge pipe (133), the liquid inlet pipe (111) is arranged on the side part of the shell (110), the liquid outlet pipe (132) is arranged in the center of the bottom of the shell (110), the sewage discharge pipe (133) is arranged on one side of the bottom of the shell (110), a first valve (1331) is fixedly installed on the sewage discharge pipe (133), and a through hole (121) is formed in the top of the shell (110);

the filter screen (200) comprises a filter screen part (210) and a sealing part (220), and the filter screen (200) is fixedly arranged in the shell (110);

edulcoration subassembly (300), edulcoration subassembly (300) include scraper blade (310) and extensible member (320), scraper blade (310) sets up to the annular plate, scraper blade (310) slide cup joint in filter screen (200), the outer lane of scraper blade (310) with the inner wall sliding seal installation of casing (110), extensible member (320) bolt installation casing (110) top, the telescopic link sliding seal installation of extensible member (320) in through-hole (121), the telescopic link of extensible member (320) with scraper blade (310) fixed weld.

2. A filter structure according to claim 1, wherein a first cover plate (120) is disposed on the top of the housing (110), a second cover plate (130) is disposed on the bottom of the housing (110), the first cover plate (120) and the second cover plate (130) are both fixedly mounted on the housing (110) by bolts, the through hole (121) is disposed on the first cover plate (120), the liquid outlet pipe (132) is disposed in the center of the second cover plate (130), and the sewage outlet pipe (133) is disposed on one side of the second cover plate (130).

3. A filter structure according to claim 2, wherein rubber gaskets (131) are arranged between the first cover plate (120), the second cover plate (130) and the housing (110).

4. A filter structure according to claim 2, wherein an end of the housing (110) adjacent to the second cover plate (130) is provided with an inclined portion (112).

5. A filter structure according to claim 4, wherein the inclined portion (112) is provided with an inlet pipe (113), and the inlet pipe (113) is fixedly provided with a second valve (1131).

6. A filter structure according to claim 1, wherein a rubber ring is arranged in the through hole (121), said rubber ring being configured to increase the sealing between the through hole (121) and the telescopic rod of the telescopic member (320).

7. A filter structure according to claim 1, characterized in that the outer ring of the scraper (310) is fixedly glued with a rubber ring (312).

8. A filter structure according to claim 1, wherein the scraping plate (310) is provided with a mounting hole, and a one-way valve (311) is fixedly mounted in the mounting hole.

9. A filter structure according to claim 2, wherein said telescopic members (320) are fixedly mounted to said first cover plate (120), and two telescopic members (320) are symmetrically arranged on said first cover plate (120).

10. A drilling fluid filtering device is characterized by comprising

A filter structure according to any one of claims 1 to 9; and

and a liquid outlet of the water pump (400) is communicated with the liquid inlet pipe (111).

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