Bidirectional filtering device for drilling fluid

Abstract

The utility model discloses a drilling fluid two-way filtering device which comprises a shell and a filter screen assembly, the filter screen assembly is arranged in the shell, a dismounting assembly is arranged between the top end of the filter screen assembly and the top end of the shell, and the filter screen assembly comprises a screen body and a top ring. The dismounting assembly comprises a top groove, a top cover, a bolt, a connecting pile and an inserting hole, the top groove is formed in the top of the shell, and the top ring is fixed to the top of the net body and arranged in the top groove; through the designed dismounting assembly, the filter screen assembly can be fixedly mounted, the mounting structure is located at the top of the shell, and when the filter screen assembly is dismounted, a worker can pull out the filter screen assembly from the interior of the shell only by opening a top cover and releasing fixed extrusion limiting on the filter screen assembly, so that dismounting is completed; according to the design, the filter screen assembly is convenient and fast to disassemble and assemble, a worker does not need to disassemble and assemble the filter screen assembly in the shell, and convenience is provided for the disassembly and assembly worker.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling, and in particular relates to a two-way filtering device for drilling fluid. Background Art

[0002] Drilling fluid is the circulating flushing medium used in the hole during the drilling process. Drilling fluid is the blood of drilling, also known as drilling flushing fluid. Drilling fluid carries a large amount of impurities during use, so the impurities need to be filtered to ensure the use effect of the drilling fluid after filtration. For example, a high-pressure drilling fluid bidirectional filtration device is recorded in the Chinese patent application with application number CN202222513247.6.

[0003] After the filter device has been used for a period of time, the filter inside it needs to be replaced and maintained. At this time, the filter needs to be disassembled. When performing this step, it is often necessary to remove the limit fixation of the filter inside the filter device. Therefore, disassembly is not convenient enough, and the disassembly efficiency is low, which brings certain troubles to the disassembly personnel. Therefore, it is necessary to design a new filter device to solve this problem. Utility Model Content

[0004] The utility model aims to provide a two-way filtering device for drilling fluid, so as to solve the problem that the existing filtering device mentioned in the above background technology is not convenient for disassembling and assembling the internal filter screen.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling fluid bidirectional filtering device, comprising an outer shell and a filter assembly, the filter assembly is arranged inside the outer shell, a disassembly assembly is arranged between the top of the filter assembly and the top of the outer shell, the filter assembly comprises a mesh body and a top ring, the disassembly assembly comprises a top groove, a top cover, bolts, connecting piles and plug-in holes, the top groove is opened at the top of the outer shell, the top ring is fixed to the top of the mesh body and placed inside the top groove, the top cover is rotatably connected to the top of the outer shell and covers the top of the top ring, one end of the top cover is fixedly connected to the outer shell by bolts, the top of the outer shell is connected to a liquid inlet pipe, the liquid inlet pipe comprises a pipe body, an end and a cannula, the liquid inlet pipe passes through the top cover and is inserted into the interior of the filter assembly.

[0006] Preferably, a sealing ring is provided on the inner wall of the top groove, and the sealing ring is in extrusion contact with the outer edge of the top ring.

[0007] Preferably, the disassembly and assembly assembly further comprises a rubber pad, which is fixed to the bottom surface of the top cover and is in close contact with the upper surface of the top ring.

[0008] Preferably, the connecting pile is fixed on the top of the top cover, the plug hole is opened through the connecting pile and the inside of the top cover, the end head is fixed on the end of the tube body, the insert is fixed on the end of the end head, and the insert passes through the plug hole and is inserted into the inside of the mesh body.

[0009] Preferably, a liquid outlet pipe is connected to the bottom end of the shell, and one end of the liquid outlet pipe extends between the shell and the filter assembly.

[0010] Preferably, a mounting seat is provided at the inner bottom end of the shell, and the filter assembly further comprises a bottom ring, which is fixedly connected to the bottom end of the mesh body and inserted into the interior of the mounting seat.

[0011] Preferably, a cleaning assembly is provided inside the mesh body, and the cleaning assembly includes a cleaning rod, a cleaning scraper and a fixed ball. The cleaning rod is provided inside the mesh body, the cleaning scraper is fixed at the bottom end of the cleaning rod, and the fixed ball is fixed at the top end of the cleaning rod.

[0012] Preferably, the cleaning assembly further comprises a positioning block and a positioning groove, wherein the positioning block is fixed to the bottom of the cleaning scraper disc and inserted into the positioning groove provided on the surface of the bottom ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Through the designed disassembly and assembly components, the filter assembly can be fixedly installed, and the installation structure is located at the top of the shell. When disassembling the filter assembly, it is only necessary to open the top cover to release the fixed extrusion limit of the filter assembly, and the personnel can pull the filter assembly out from the inside of the shell to complete the disassembly. The disassembly and assembly operation of the filter assembly under this design is convenient and quick, and the personnel do not need to perform disassembly and assembly operations inside the shell, which provides convenience for the disassembly and assembly personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional view of the utility model;

[0016] Figure 2 For this utility model Figure 1 A partial enlarged view of the disassembly and assembly of the components;

[0017] Figure 3 For this utility model Figure 1 A front cross-sectional view of the middle filter assembly;

[0018] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle cleaning scraper;

[0019] In the figure: 100, outer shell; 200, filter assembly; 201, mesh body; 202, top ring; 203, bottom ring; 300, disassembly assembly; 301, top groove; 302, top cover; 303, bolt; 304, rubber pad; 305, connecting pile; 306, plug hole; 400, liquid inlet pipe; 401, pipe body; 402, end; 403, plug pipe; 500, liquid outlet pipe; 600, mounting seat; 700, cleaning assembly; 701, cleaning rod; 702, cleaning scraper; 703, fixing ball; 704, positioning block; 705, positioning groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figures 1 to 4 , is an embodiment of the utility model, and this embodiment provides a technical solution: a drilling fluid bidirectional filtering device, comprising a shell 100 and a filter assembly 200, the filter assembly 200 is arranged inside the shell 100, the filter assembly 200 can filter impurities in the drilling fluid, a disassembly assembly 300 is arranged between the top of the filter assembly 200 and the top of the shell 100, and the filter assembly 200 can be disassembled and assembled through the disassembly assembly 300, the filter assembly 200 includes a mesh body 201 and a top ring 202, the disassembly assembly 300 includes a top groove 301, a top cover 302, bolts 303, a connecting pile 305 and a plug hole 306, the top groove 301 is opened at the top of the shell 100, and the top ring 202 is fixed to the mesh body 201 The top of the housing 100 is connected to the top of the housing 100 and is placed inside the top groove 301. The top cover 302 is rotatably connected to the top of the housing 100 and covers the top of the top ring 202. One end of the top cover 302 is fixedly connected to the housing 100 by a bolt 303, so that the top ring 202 is squeezed and limited, and the filter assembly 200 is limited and fixed. The personnel can remove the bolt 303 and open the top cover 302, and the personnel can remove the filter assembly 200. The top of the housing 100 is connected to a liquid inlet pipe 400, and the liquid inlet pipe 400 includes a pipe body 401, an end 402 and a cannula 403. The liquid inlet pipe 400 passes through the top cover 302 and is inserted into the interior of the filter assembly 200. The liquid inlet pipe 400 can pass the drilling fluid into the interior of the filter assembly 200 for filtering.

[0023] In this embodiment, preferably, a sealing ring is provided on the inner wall of the top groove 301 , and the sealing ring is in extrusion contact with the outer edge of the top ring 202 to play a sealing role.

[0024] In this embodiment, preferably, the disassembly assembly 300 further includes a rubber pad 304, which is fixed to the bottom surface of the top cover 302 and is in close contact with the upper surface of the top ring 202, thereby further improving the sealing effect.

[0025] In this embodiment, preferably, the connecting pile 305 is fixed on the top of the top cover 302, the plug hole 306 is opened through the inside of the connecting pile 305 and the top cover 302, the end 402 is fixed on the end of the tube body 401, the insert 403 is fixed on the end of the end 402, the insert 403 passes through the plug hole 306 and is inserted into the inside of the mesh body 201, and before disassembling the filter assembly 200, the insert 403 needs to be pulled out from the inside of the plug hole 306.

[0026] In this embodiment, preferably, a liquid outlet pipe 500 is connected to the bottom end of the housing 100 , one end of the liquid outlet pipe 500 extends between the housing 100 and the filter assembly 200 , and the filtered drilling fluid can be discharged from the liquid outlet pipe 500 .

[0027] In this embodiment, preferably, a mounting seat 600 is provided at the inner bottom end of the outer shell 100, and the filter assembly 200 also includes a bottom ring 203, which is fixedly connected to the bottom end of the mesh body 201 and inserted into the interior of the mounting seat 600 to complete the positioning of the bottom end of the filter assembly 200.

[0028] In this embodiment, preferably, a cleaning component 700 is provided inside the mesh body 201, and the filtered impurities can be cleaned by the cleaning component 700. The cleaning component 700 includes a cleaning rod 701, a cleaning scraper 702 and a fixed ball 703. The cleaning rod 701 is provided inside the mesh body 201, the cleaning scraper 702 is fixed at the bottom end of the cleaning rod 701, and the fixed ball 703 is fixed at the top end of the cleaning rod 701. When cleaning, the top cover 302 can be opened first, and then the fixed ball 703 can be held by hand, and the cleaning rod 701 can be lifted to drive the cleaning scraper 702 to scrape the inner wall of the mesh body 201, thereby playing a role in cleaning.

[0029] In this embodiment, preferably, the cleaning component 700 also includes a positioning block 704 and a positioning groove 705. The positioning block 704 is fixed to the bottom of the cleaning scraper 702 and inserted into the interior of the positioning groove 705 opened on the surface of the bottom ring 203 to play a positioning role. A strong magnetic sheet is arranged inside the positioning groove 705, which can be adsorbed with the iron positioning block 704 to ensure a stable connection.

[0030] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-way filtering device for drilling fluid, comprising a housing (100) and a filter assembly (200), wherein the filter assembly (200) is arranged inside the housing (100), and is characterized in that: A disassembly assembly (300) is provided between the top of the filter assembly (200) and the top of the housing (100); the filter assembly (200) comprises a mesh body (201) and a top ring (202); the disassembly assembly (300) comprises a top groove (301), a top cover (302), bolts (303), a connecting pile (305) and a plug hole (306); the top groove (301) is provided at the top of the housing (100); the top ring (202) is fixed to the top of the mesh body (201) and is placed in the top groove (301). 01), the top cover (302) is rotatably connected to the top of the outer shell (100) and covers the top of the top ring (202), one end of the top cover (302) is fixedly connected to the outer shell (100) by a bolt (303), the top of the outer shell (100) is connected to a liquid inlet pipe (400), the liquid inlet pipe (400) includes a pipe body (401), an end head (402) and a cannula (403), and the liquid inlet pipe (400) passes through the top cover (302) and is inserted into the interior of the filter assembly (200).

2. A two-way filtering device for drilling fluid according to claim 1, characterized in that: The inner wall of the top groove (301) is provided with a sealing ring, and the sealing ring is in extrusion contact with the outer edge of the top ring (202).

3. A two-way filtering device for drilling fluid according to claim 1, characterized in that: The disassembly assembly (300) further comprises a rubber pad (304), wherein the rubber pad (304) is fixed to the bottom surface of the top cover (302) and is in close contact with the upper surface of the top ring (202).

4. A two-way filtering device for drilling fluid according to claim 1, characterized in that: The connecting pile (305) is fixed on the top of the top cover (302), the plug hole (306) is opened through the inside of the connecting pile (305) and the top cover (302), the end head (402) is fixed on the end of the tube body (401), the insert tube (403) is fixed on the end of the end head (402), and the insert tube (403) passes through the plug hole (306) and is inserted into the inside of the mesh body (201).

5. A two-way filtering device for drilling fluid according to claim 1, characterized in that: The bottom end of the housing (100) is connected to a liquid outlet pipe (500), and one end of the liquid outlet pipe (500) extends between the housing (100) and the filter assembly (200).

6. A two-way filtering device for drilling fluid according to claim 1, characterized in that: A mounting seat (600) is provided at the inner bottom end of the housing (100), and the filter assembly (200) further comprises a bottom ring (203), wherein the bottom ring (203) is fixedly connected to the bottom end of the mesh body (201) and inserted into the interior of the mounting seat (600).

7. A two-way filtering device for drilling fluid according to claim 1, characterized in that: A dirt cleaning assembly (700) is arranged inside the net body (201), and the dirt cleaning assembly (700) comprises a dirt cleaning rod (701), a dirt cleaning scraper (702) and a fixed ball (703); the dirt cleaning rod (701) is arranged inside the net body (201), the dirt cleaning scraper (702) is fixed to the bottom end of the dirt cleaning rod (701), and the fixed ball (703) is fixed to the top end of the dirt cleaning rod (701).

8. A two-way filtering device for drilling fluid according to claim 7, characterized in that: The cleaning assembly (700) further comprises a positioning block (704) and a positioning groove (705); the positioning block (704) is fixed to the bottom of the cleaning scraper (702) and inserted into the interior of the positioning groove (705) provided on the surface of the bottom ring (203).

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