A light drilling rig oil system fine filter device

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a fine filtering device for an oil circuit system of a light drilling rig, comprising an equipment frame, on which a gear pump, an air motor and a fine filter are fixedly mounted, the output shaft of the air motor is provided with a coupling, the input shaft of the gear pump is connected to the output shaft of the air motor through a coupling, the oil inlet of the gear pump is connected to an oil inlet pipe, the fine filter comprises a cylindrical tank body, the side of the tank body is provided with an oil inlet filter, the oil outlet of the gear pump is connected to the oil inlet filter through a pipeline, the utility model can drive the device to operate through an air source of an underground air supply pipeline, compared with motor drive, the utility model is more stable in operation, avoids the safety hazard caused by electrical explosion, and at the same time improves the convenience of daily maintenance of underground drilling equipment on site, avoids work delays caused by major maintenance during lifting and repair, and improves production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, in particular to a fine filtering device for an oil circuit system of a light drilling rig. Background Art

[0002] The oil line filter is one of the most important components in automobiles, industrial machinery and other equipment. Its main function is to filter out impurities and pollutants in the oil line. These impurities may include tiny particles, rust, and dirt, thereby ensuring the smooth operation of the fuel system or lubrication system.

[0003] For example, an oil circuit filtering device disclosed in the utility model patent with the authorized patent announcement number CN218653172U includes an oil tank and a filtering device; the filtering device is arranged at the upper end of the oil tank, and an oil outlet is arranged at the lower end of the filtering device; an oil inlet is arranged at the upper end of the oil tank; the oil outlet is connected to the oil inlet; the filtering device includes a shell; the shell is hollow inside, and a filter screen is arranged inside the shell, the filter screen is arranged obliquely, and the lower end of the filter screen is connected to the waste box; an oil inlet pipe connected to the oil circuit is arranged on the side of the shell, and the oil inlet pipe is located above the high end of the filter screen; a driving motor is also arranged on the outer surface of the shell, and the output end of the driving motor is connected to the cleaning brush through a rotating shaft; the cleaning brush acts on the upper surface of the filter screen. The utility model has the problem of slow filtering efficiency. At the same time, there are also some devices that use motor-driven oil pumps to filter hydraulic oil. However, in the process of underground operation, in order to avoid safety hazards caused by electrical explosion, a kind of oil circuit system fine filtering device suitable for providing daily maintenance and maintenance on-site for underground drilling equipment is needed. Summary of the invention

[0004] In view of the above problems, the utility model proposes a light drilling rig oil circuit system fine filtering device, which effectively solves the problem that the oil circuit filtering device in the prior art has low filtering efficiency, and the use of motor drive has electrical explosion safety hazards and is not suitable for safe underground operations.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a light drilling rig oil circuit system fine filtering device, comprising an equipment frame, on which a gear pump, an air motor and a fine filter are fixedly installed, the output shaft of the air motor is provided with a coupling, the input shaft of the gear pump is connected to the output shaft of the air motor through a coupling, the oil inlet of the gear pump is connected to an oil inlet pipe, the fine filter comprises a cylindrical tank body, a filter element is provided in the tank body, the outer wall of the filter element is fitted with the tank body, a screw rod is passed through the middle of the filter element, an oil outlet channel connected to the outside of the tank body is opened in the center of the screw rod, the oil outlet channel is connected to the oil outlet pipe, an oil inlet filter is provided on the side of the tank body, and the oil outlet of the gear pump is connected to the oil inlet filter through a pipeline.

[0006] Furthermore, a bracket is provided on the equipment frame, and the bracket includes a base plate and two mounting plates. The base plate is fixedly mounted on the upper side of the equipment frame, and the two mounting plates are relatively arranged on the upper side of the base plate. Axle holes are opened on the two mounting plates, and the coupling is arranged between the two mounting plates. The gear pump and the pneumatic motor are respectively fixedly mounted on the sides of the two mounting plates, and the input end of the gear pump and the output end of the pneumatic motor are respectively connected to the coupling through the axial holes.

[0007] Furthermore, the coupling includes connecting key 1, connecting key 2 and a sleeve, the inner wall of the sleeve is provided with an anti-slip ring, both sides of the anti-slip ring are provided with key slots located on the inner wall of the sleeve, the connecting key 1 is fixedly connected to the output end of the pneumatic motor, the connecting key 2 is connected to the input end of the gear pump, the connecting key 1 and the connecting key 2 are respectively abutted against both sides of the anti-slip ring and connected to the inner wall key of the sleeve.

[0008] Furthermore, a removable bottom cover is provided at the bottom of the tank body, and the bottom cover is sealed and connected to the tank body. A connecting bolt is provided on the bottom cover, one end of the connecting bolt is passed through the tank body, and a threaded hole is provided at one end of the connecting bolt passed through the tank body. The screw rod is threadedly connected to the threaded hole, and an oil filter hole connected to the bottom of the threaded hole is provided on the side of the connecting bolt.

[0009] Furthermore, a cooling device is provided on the pipeline connecting the oil outlet of the gear pump and the oil inlet filter.

[0010] Furthermore, a protective frame fixedly connected to the equipment frame is arranged above the gear pump, the pneumatic motor and the fine filter.

[0011] Furthermore, universal wheels are provided at the lower portion of the equipment rack.

[0012] Furthermore, it also includes a connecting device, in which oil circuit 1 and oil circuit 2 are opened, one end of oil circuit 1 and oil circuit 2 are provided with quick-release joints, and the other ends of oil circuit 1 and oil circuit 2 are respectively connected to the oil inlet pipe and the oil outlet pipe.

[0013] Furthermore, the connecting device is provided with a pressure gauge connected to the oil circuit 2.

[0014] Furthermore, the pneumatic motor is a piston pneumatic motor.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model can drive the operation of the device through the gas source of the underground gas supply pipeline. Compared with the motor drive, the operation of the utility model is more stable and efficient, avoiding the safety hazard caused by electrical explosion, and at the same time improving the convenience of daily on-site maintenance of underground drilling equipment, avoiding work delays caused by major maintenance during lifting and returning to the well, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the fine filter;

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the coupling;

[0020] Figure 4 for Figure 2 Enlarged view of the structure of part A in the middle.

[0021] In the figure: 1. Equipment frame; 2. Gear pump; 3. Pneumatic motor; 4. Fine filter; 41. Tank; 42. Filter element; 43. Screw; 44. Oil outlet channel; 45. Oil inlet filter; 46. Bottom cover; 47. Connecting bolt; 48. Oil filter hole; 49. Rubber gasket; 5. Coupling; 51. Connecting key 1; 52. Connecting key 2; 53. Bushing; 54. Anti-slip ring; 6. Oil inlet pipe; 7. Oil outlet pipe; 8. Bracket; 81. Bottom plate; 82. Mounting plate; 9. Cooling device; 10. Protective frame; 101. Protective plate; 102. Support rod; 11. Universal wheel; 12. Connecting device; 121. Oil circuit 1; 122. Oil circuit 2; 123. Quick release connector; 13. Pressure gauge. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-Figure 4As shown, a light drilling rig oil system fine filtering device includes an equipment frame 1, the equipment frame 1 includes a square platform and legs welded at the four corners of the platform, a gear pump 2, an air motor 3 and a fine filter 4 are fixedly installed on the upper side of the platform, the output shaft of the air motor 3 is provided with a coupling 5, the input shaft of the gear pump 2 is connected to the output shaft of the air motor 3 through the coupling 5, the oil inlet of the gear pump 2 is connected to the oil inlet pipe 6 through a threaded joint, the fine filter 4 includes a cylindrical tank body 41, a filter element 42 is arranged in the tank body 41, the filter element 42 adopts a filter element with a filtration accuracy of 3 microns, and the material of the filter element 42 is unbleached cotton lint fiber or Semi-chemical cellulose, the filter element 42 is cylindrical, with a through hole in the center of the filter element 42, the outer wall of the filter element 42 is fitted with the tank body 41, a screw rod 43 is passed through the through hole of the filter element 42, one end of the screw rod 43 is fixed to the tank body 41 by welding, an oil outlet channel 44 connected to the outside of the tank body 41 is opened in the center of the screw rod 43, the oil outlet channel 44 is connected to the oil outlet pipe 7 through a threaded joint, an oil inlet filter 45 is provided on the side of the tank body 41, the oil inlet filter 45 is a short tube welded to the side of the tank body 41, the interior of the short tube is connected to the interior of the tank body 41, and the oil outlet of the gear pump 2 is connected to the oil inlet filter 45 through a pipe with a threaded joint.

[0024] In this embodiment, a bracket 8 is provided on the equipment frame 1, and the bracket 8 includes a base plate 81 and two mounting plates 82. The base plate 81 is provided with bolt holes, and the base plate 81 is fixedly mounted on the upper side of the equipment frame 1 by bolts passing through the bolt holes. The two mounting plates 82 are relatively welded and fixed to the upper side of the base plate 81. The two mounting plates 82 are both provided with axial holes, and mounting bolt holes are provided around the axial holes. The coupling 5 is arranged between the two mounting plates 82, and the gear pump 2 and the pneumatic motor 3 are respectively mounted on the sides of the two mounting plates 82 by bolts, and the input end of the gear pump 2 and the output end of the pneumatic motor 3 are respectively connected to the coupling 5 through the axial holes.

[0025] In this embodiment, the coupling 5 includes a connecting key 1 51, a connecting key 2 52 and a sleeve 53, the inner wall of the sleeve 53 is provided with an anti-slip ring 54, and key slots located on the inner wall of the sleeve 53 are provided on both sides of the anti-slip ring 54. The connecting key 1 51 is fixedly connected to the output end of the pneumatic motor 3 by screws, and the connecting key 2 52 is fixedly connected to the input end of the gear pump 2 by screws. The connecting key 1 51 and the connecting key 2 52 are both splines, and the connecting key 1 51 and the connecting key 2 52 are respectively abutted on both sides of the anti-slip ring 54 and connected to the inner wall key of the sleeve 53.

[0026] In this embodiment, a detachable bottom cover 46 is provided at the bottom of the tank body 41, a sealing groove 1 is provided at the position where the bottom cover 46 and the tank body 41 are fitted, a sealing ring 1 is provided in the sealing groove, the bottom cover 46 and the tank body 41 are sealed and connected via the provided sealing ring 1, a circular through hole is provided at the center of the bottom cover 46, a connecting bolt 47 is installed in the circular through hole, one end of the connecting bolt 47 is inserted in the tank body 41, a threaded hole is provided at one end of the connecting bolt 47 inserted in the tank body 41, the screw rod 43 is threadedly connected to the threaded hole, an oil filter hole 48 communicating with the bottom of the threaded hole is provided on the side of the connecting bolt 47, a rubber gasket 49 is sleeved on the connecting bolt 47, the rubber gasket 49 is located between the bolt head of the connecting bolt 47 and the bottom cover 46, the rubber gasket 49 is squeezed by the bolt head to fit the bottom cover 46 to form a seal.

[0027] In this embodiment, a cooling device 9 is connected to the pipeline connecting the oil outlet of the gear pump 2 and the oil inlet filter 45 through a threaded joint. The cooling device 9 can be a plate-fin cooler. The cooling device 9 is fixedly installed on the equipment frame 1 by screws. The cooling device 9 can reduce the temperature of a part of the hydraulic oil, thereby reducing the aging speed of the filter element 42 and increasing the service life of the filter element 42.

[0028] In this embodiment, a protective frame 10 fixedly connected to the equipment frame 1 is arranged above the gear pump 2, the pneumatic motor 3 and the fine filter 4. The protective frame 10 includes a protective plate 101 and a support rod 102 welded to the lower part of the protective plate 101. The bottom of the support rod 102 is welded and fixed to the upper part of the equipment frame 1. The protective frame 10 prevents the gear pump 2, the pneumatic motor 3 and the fine filter 4 from being collided.

[0029] In this embodiment, a universal wheel 11 is installed at the lower part of the equipment frame 1 by screws, so as to facilitate the moving operation of the equipment.

[0030] In this embodiment, a connecting device 12 is also included. The connecting device 12 is fixed to the upper part of the equipment frame 1 by screws. An oil circuit 1 121 and an oil circuit 2 122 are drilled in the connecting device 12. One end of each of the oil circuit 1 121 and the oil circuit 2 122 is provided with a quick-release joint 123. The quick-release joint 123 facilitates quick connection of equipment that requires fine filtration through a pipeline. The other ends of the oil circuit 1 121 and the oil circuit 2 122 are connected to the oil inlet pipe 6 and the oil outlet pipe 7 respectively through threaded joints.

[0031] In this embodiment, a pressure measuring device installation hole connected to the second oil circuit 122 is provided on the connecting device 12, and a pressure gauge 13 is installed in the pressure measuring device installation hole to facilitate observation of the oil pressure during the oil circuit filtering process.

[0032] In this embodiment, the pneumatic motor 3 is a piston pneumatic motor, which has a strong overload capacity, good explosion-proof performance, and is more suitable for underground operations.

[0033] When the utility model is in use, the equipment is moved to the working site by the universal wheel 11, the air motor 3 is connected through the air supply pipeline underground, the oil inlet and return pipelines of the equipment to be filtered are connected to the quick-release joint 123 on the connecting device 12, the air motor 3 is started, and the output end of the air motor 3 drives the gear pump 2 through the coupling 5. The gear pump 2 extracts the hydraulic oil in the equipment to be filtered, and the hydraulic oil enters the fine filter 4 after passing through the cooling device 9. After being filtered by the filter element 42, the hydraulic oil enters the oil outlet pipe 7 through the oil outlet channel 44 opened on the screw rod 43, so that the filtered hydraulic oil re-enters the equipment to be filtered, thereby realizing the filtration of the oil.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A light drilling rig oil system fine filtering device, comprising an equipment frame, characterized in that: A gear pump, an air motor and a fine filter are fixedly mounted on the equipment frame, the output shaft of the air motor is provided with a coupling, the input shaft of the gear pump is connected to the output shaft of the air motor through a coupling, the oil inlet of the gear pump is connected to an oil inlet pipe, the fine filter comprises a cylindrical tank body, a filter element is provided in the tank body, the outer wall of the filter element is fitted with the tank body, a screw rod is passed through the middle of the filter element, an oil outlet channel connected to the outside of the tank body is opened in the center of the screw rod, the oil outlet channel is connected to an oil outlet pipe, an oil inlet filter is provided on the side of the tank body, and the oil outlet of the gear pump is connected to the oil inlet filter through a pipeline.

2. The light drilling rig oil system fine filtering device according to claim 1 is characterized by: A bracket is arranged on the equipment frame, and the bracket includes a base plate and two mounting plates. The base plate is fixedly mounted on the upper side of the equipment frame, and the two mounting plates are relatively arranged on the upper side of the base plate. Axle holes are opened on the two mounting plates, and the coupling is arranged between the two mounting plates. The gear pump and the pneumatic motor are respectively fixedly mounted on the sides of the two mounting plates, and the input end of the gear pump and the output end of the pneumatic motor are respectively connected to the coupling through the axial holes.

3. The light drilling rig oil system fine filtering device according to claim 1 is characterized in that: The coupling includes connecting key 1, connecting key 2 and a sleeve, the inner wall of the sleeve is provided with an anti-slip ring, and key slots located on the inner wall of the sleeve are provided on both sides of the anti-slip ring. The connecting key 1 is fixedly connected to the output end of the pneumatic motor, and the connecting key 2 is connected to the input end of the gear pump. The connecting key 1 and the connecting key 2 are respectively abutted against both sides of the anti-slip ring and connected to the inner wall key of the sleeve.

4. The light drilling rig oil system fine filtering device according to claim 1 is characterized in that: A detachable bottom cover is provided at the bottom of the tank body, and the bottom cover is sealed and connected to the tank body. A connecting bolt is provided on the bottom cover, and one end of the connecting bolt is passed through the tank body. A threaded hole is provided at one end of the connecting bolt passed through the tank body, and the screw rod is threadedly connected to the threaded hole. An oil filter hole connected to the bottom of the threaded hole is provided on the side of the connecting bolt.

5. The light drilling rig oil system fine filtering device according to claim 1, characterized in that: A cooling device is arranged on the pipeline connecting the oil outlet of the gear pump and the oil inlet filter.

6. The light drilling rig oil system fine filtering device according to claim 1 is characterized by: A protective frame fixedly connected to the equipment frame is arranged above the gear pump, the pneumatic motor and the fine filter.

7. The light drilling rig oil system fine filtering device according to claim 1 is characterized by: The lower part of the equipment rack is provided with universal wheels.

8. The light drilling rig oil system fine filtering device according to claim 1, characterized in that: It also includes a connecting device, in which an oil circuit 1 and an oil circuit 2 are opened. One end of the oil circuit 1 and the oil circuit 2 are both provided with a quick-release joint, and the other ends of the oil circuit 1 and the oil circuit 2 are respectively connected to an oil inlet pipe and an oil outlet pipe.

9. The light drilling rig oil system fine filtering device according to claim 8, characterized in that: The connecting device is provided with a pressure gauge connected to the second oil circuit.

10. The light drilling rig oil system fine filter device according to claim 1, characterized in that: The pneumatic motor is a piston type pneumatic motor.

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