A petroleum drilling fluid filtration device

Abstract

The utility model discloses a kind of petroleum drilling fluid filtering devices, it is related to petroleum drilling fluid processing technical field, including bottom plate and filter box, filter box includes the box body being set on bottom plate upside, and the inclination mechanism of adjusting box body is set on bottom plate, the inside of box body is provided with filter assembly and drive assembly;Through cylinder drive moving plate, and then drive connecting rod to lift the left end of box body;The right end of box body is rotated with base and rotating seat as axis, to realize the angle adjustment of box body and its inside first filter plate, second filter plate.And through the angle fixation of insertion fixed pin, so that it is efficiently carried out impurity removal using gravity effect, simultaneously, through the cooperation of motor, rotating shaft, gear one and gear two of drive assembly, and then through rotating frame drive first filter plate and second filter plate rotation, avoid local area to be continuously pressed in filtering way, effectively disperse filter load, prolong the service life of filter screen, and prevent filter screen accumulation blockage through centrifugal force and scraper.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling fluid treatment technology, specifically to an oil drilling fluid filtration device. Background Technology

[0002] Drilling fluid is the circulating flushing medium used in the borehole during the drilling process. Drilling fluid is the lifeblood of drilling, also known as borehole flushing fluid. Drilling fluid can be classified according to its composition into water, mud, clay-free flushing fluid, emulsion, foam, and compressed air, etc. Water is the earliest drilling fluid used. It does not require treatment, is easy to use, and is suitable for areas with intact rock formations and abundant water sources. Mud is a widely used drilling fluid, mainly suitable for unstable rock formations with loose, fractured, easily collapsing, or water-swelling and peeling-off borehole walls.

[0003] To reduce resource waste after drilling fluid is used, it is recycled and reused. However, after use, the drilling fluid contains a lot of stones and silt, so it is necessary to filter out the impurities. During the process, it was found that smaller particles of silt easily clog the filter plates, which seriously affects the filtration and recovery efficiency of the drilling fluid. Based on this, this solution provides an oil drilling fluid filtration device to solve the above-mentioned problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, an oil drilling fluid filtration device is provided, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A petroleum drilling fluid filtration device includes a base plate and a filter box. The filter box includes a housing disposed on the upper side of the base plate. The base plate is provided with an adjustment mechanism for tilting the housing. The housing contains a filter assembly and a drive assembly. The tilting mechanism includes a base and a cylinder fixedly mounted on the base plate. A rotating seat is rotatably mounted on the base and is fixedly connected to the housing. The cylinder is disposed on the left side of the base. A movable plate is fixedly connected to the output shaft of the cylinder. A connecting rod is rotatably mounted on the left end of the movable plate. The left end of the connecting rod is rotatably connected to the bottom of the housing, and a locking element is provided on the outer side of the connecting rod.

[0007] Preferably, the locking component includes arc-shaped plates fixedly installed on the front and rear sides of the base plate, with a number of limiting holes on the arc-shaped plates. A fixing block is provided on the side of the arc-shaped plate near the box body. The fixing block is fixedly installed at the lower end of the box body, and a through hole for matching the limiting holes is provided on the fixing block. A fixing pin is inserted between the arc-shaped plate and the fixing block.

[0008] Preferably, a limiting block is fixedly connected to the lower end of the movable plate, and a groove is provided at the upper end of the base plate for sliding in conjunction with the limiting block.

[0009] Preferably, a feed inlet is fixedly installed at the top of the box, and two sets of fixing plates are fixedly connected to the inner wall of the box. The middle of the two sets of fixing plates is rotatably connected to the filter assembly. A slag outlet is provided on the right side of each fixing plate and opened on the inner wall of the box. A slag guide plate is fixedly connected to the box on the outside of the slag outlet. A discharge outlet is fixedly installed at the bottom right end of the box.

[0010] Preferably, the filter assembly includes two sets of rotating frames that are rotatably connected to two sets of fixed plates respectively. The first filter plate and the second filter plate are fixedly connected inside the two sets of rotating frames respectively. The outer side of each set of rotating frames is provided with a baffle fixedly installed on the fixed plate. A scraper is fixedly connected to each baffle. A toothed ring is fixedly connected to the lower outer side of each set of rotating frames. The toothed ring is engaged with the drive assembly.

[0011] Preferably, the drive assembly includes a first gear and a second gear that mesh with two sets of gear rings respectively. The second gear is located on the lower side of the first gear, and a motor is fixedly mounted on a fixed plate on the upper side of the first gear. The output shaft of the motor is fixedly connected to a rotating shaft, the lower end of which passes through the two sets of fixed plates and is rotatably connected to the two sets of fixed plates respectively. Both the first gear and the second gear are fixedly mounted on the rotating shaft.

[0012] Compared with the prior art, the present invention proposes an oil drilling fluid filtration device, which has the following beneficial effects:

[0013] 1. This utility model is equipped with an angle adjustment component. A cylinder drives a moving plate, which is guided by a limiting block and a sliding groove, thus moving stably along a straight line. This, in turn, drives a connecting rod to lift the left end of the housing. The right end of the housing rotates around a base and a rotating seat, thereby adjusting the angle of the housing and its internal first and second filter plates. After adjustment, the angle is locked by aligning the through hole on the fixing block with the corresponding limiting hole and inserting a fixing pin. By tilting the filter plates, gravity can be used to more efficiently discharge impurities (slag). Simultaneously, the most suitable filter plate tilt angle can be flexibly selected according to different drilling depths to optimize the filtration and slag removal effects for impurities generated under different working conditions.

[0014] 2. This utility model is provided with a first filter plate and a second filter plate. The two sets of filter plates are used for graded filtration, thereby reducing the pressure of a single filter plate and thus improving the service life of the first filter plate and the second filter plate.

[0015] 3. This utility model includes a drive assembly. Driven by a motor, and through the transmission of a rotating shaft, gear one, and gear two, the two sets of rotating frames in the filter assembly rotate, thereby rotating the first and second filter plates. This cyclical rotation of the first and second filter plates prevents continuous pressure on localized areas, effectively dispersing the filtration load and extending the filter's lifespan. Simultaneously, the centrifugal force generated during high-speed rotation actively removes fine particulate impurities, reducing the probability of clogging the filter pores. Combined with a fixed scraper, larger debris adhering to the screen surface is continuously scraped away during the filter plate's rotation, preventing accumulation and blockage that could impede drilling fluid passage through the filter plate, thus improving the drilling fluid's filtration efficiency. The tilting mechanism further facilitates automatic cleaning of debris, ensuring unobstructed filtration channels. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the filter box in this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the filter box in this utility model;

[0019] Figure 4 This is a schematic diagram of the tilting mechanism in this utility model;

[0020] Figure 5 This is a cross-sectional view of the tilting mechanism in this utility model;

[0021] Figure 6 This is a schematic diagram of the filter assembly in this utility model;

[0022] Figure 7 This is a schematic diagram of the drive component in this utility model.

[0023] The numbers on the map are:

[0024] 1. Base plate; 2. Filter box; 3. Tilting mechanism; 4. Filter assembly; 5. Drive assembly;

[0025] 201. Box body; 202. Feed inlet; 203. Fixing plate; 204. Slag outlet; 205. Slag guide plate; 206. Discharge outlet;

[0026] 301. Base; 302. Rotating seat; 303. Arc-shaped plate; 304. Limiting hole; 305. Fixing block; 306. Fixing pin; 307. Cylinder; 308. Moving plate; 309. Limiting block; 3010. Connecting rod;

[0027] 401. Rotating frame; 402. First filter plate; 403. Second filter plate; 404. Enclosure; 405. Scraper; 406. Toothed ring;

[0028] 501. Motor; 502. Shaft; 503. Gear 1; 504. Gear 2. Detailed Implementation

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] Reference Figure 1-2 As shown, an oil drilling fluid filtration device includes a base plate 1 and a filter box 2. The filter box 2 includes a box body 201 disposed on the upper side of the base plate 1. The base plate 1 is provided with an tilting mechanism 3 for adjusting the tilt of the box body 201. The box body 201 is provided with a filter assembly 4 and a drive assembly 5.

[0031] Furthermore, during use, the tilting mechanism 3 can tilt the filter box 2, thereby tilting the filter component 4 inside the box 201. In conjunction with the drive component 5, the filter component 4 is rotated, and the centrifugal force generated during the high-speed rotation can actively remove fine particulate impurities, reducing the probability of impurities clogging the filter holes. At the same time, in conjunction with the tilting mechanism 3, the automatic cleaning of debris is effectively achieved, ensuring that the filter channel is unobstructed.

[0032] Reference Figure 4-5 Specifically, in this embodiment, the tilting mechanism 3 includes a base 301 and a cylinder 307 fixedly installed on the base plate 1. A rotating seat 302 is rotatably installed on the base 301 and is fixedly connected to the housing 201. The cylinder 307 is located on the left side of the base 301. A moving plate 308 is fixedly connected to the output shaft of the cylinder 307. A connecting rod 3010 is rotatably installed on the left end of the moving plate 308. The left end of the connecting rod 3010 is rotatably connected to the bottom of the housing 201, and a locking element is provided on the outer side of the connecting rod 3010.

[0033] The locking component includes an arc-shaped plate 303 fixedly installed on the front and rear sides of the base plate 1. The arc-shaped plate 303 has several sets of limiting holes 304. A fixing block 305 is provided on the side of the arc-shaped plate 303 near the box body 201. The fixing block 305 is fixedly installed at the lower end of the box body 201, and the fixing block 305 has a through hole for cooperating with the limiting holes 304. A fixing pin 306 is inserted between the arc-shaped plate 303 and the fixing block 305.

[0034] The lower end of the movable plate 308 is fixedly connected to the limiting block 309, and the upper end of the base plate 1 is provided with a sliding groove for sliding with the limiting block 309.

[0035] Furthermore: the cylinder 307 drives the moving plate 308, which is guided by the limiting block 309 and the sliding groove, thus moving stably along a straight line, thereby driving the connecting rod 3010 to lift the left end of the housing 201; the right end of the housing 201 rotates around the base 301 and the rotating seat 302, thereby realizing the angle adjustment of the housing 201 and the first filter plate 402 and the second filter plate 403 inside. After the adjustment is in place, the angle can be locked by aligning the through hole on the fixing block 305 with the corresponding limiting hole 304 and inserting the fixing pin 306. By tilting the filter plate, the impurities (slag) can be discharged more efficiently by utilizing gravity; at the same time, the most suitable tilt angle of the filter plate can be flexibly selected according to different drilling depths to optimize the filtration and slag discharge effect of impurities generated under different working conditions.

[0036] Reference Figure 3 Specifically, in this embodiment, a feed inlet 202 is fixedly installed at the top of the box 201, and two sets of fixing plates 203 are fixedly connected to the inner wall of the box 201. The middle of the two sets of fixing plates 203 is rotatably connected to the filter assembly 4. A slag outlet 204 is provided on the right side of the fixing plate 203 and opened on the inner wall of the box 201. A slag guide plate 205 is fixedly connected to the box 201 on the outer side of the slag outlet 204. A discharge outlet 206 is fixedly installed at the bottom right end of the box 201.

[0037] Furthermore: In use, the drilling fluid to be filtered enters through the inlet 202, and the lower end of the inlet 202 is located directly above the first filter plate 402, so that it can be purified by the first filter plate 402 and the second filter plate 403. Impurities generated during the purification process are discharged through the slag outlet 204 on the right side, and the filtered drilling fluid is discharged through the outlet 206.

[0038] Reference Figure 6-7 Specifically, in this embodiment, the filter assembly 4 includes two sets of rotating frames 401 that are rotatably connected to two sets of fixed plates 203 respectively. The first filter plate 402 and the second filter plate 403 are fixedly connected inside the two sets of rotating frames 401 respectively. Furthermore, the outer sides of the two sets of rotating frames 401 are provided with a barrier 404 fixedly installed on the fixed plate 203. A scraper 405 is fixedly connected to the barrier 404. A toothed ring 406 is fixedly connected to the lower outer side of the two sets of rotating frames 401. The toothed ring 406 is meshed with the drive assembly 5.

[0039] Furthermore, by setting a first filter plate 402 and a second filter plate 403, the two sets of filter plates are used for graded filtration, thereby reducing the pressure on a single filter plate and thus increasing the service life of the first filter plate 402 and the second filter plate 403.

[0040] Reference Figure 6-7Specifically, in this embodiment, the drive assembly 5 includes a first gear 503 and a second gear 504 that mesh with two sets of gear rings 406 respectively. The second gear 504 is disposed on the lower side of the first gear 503, and a motor 501 is fixedly mounted on the upper side of the first gear 503 on the fixed plate 203. The output shaft of the motor 501 is fixedly connected to a rotating shaft 502. The lower end of the rotating shaft 502 passes through the two sets of fixed plates 203 and is rotatably connected to the two sets of fixed plates 203 respectively. Both the first gear 503 and the second gear 504 are fixedly mounted on the rotating shaft 502.

[0041] Furthermore: Driven by the motor 501 of the drive assembly 5, and in conjunction with the transmission of the rotating shaft 502, gear one 503, and gear two 504, the two sets of rotating frames 406 in the filter assembly 4 are rotated, which in turn drives the first filter plate 402 and the second filter plate 403 to rotate. By making the first filter plate 402 and the second filter plate 403 rotate cyclically, continuous pressure on local areas is avoided, the filtration load is effectively distributed, and the service life of the filter screen is extended. At the same time, the filter plates generate centrifugal force during high-speed rotation, actively throwing off fine particulate impurities, which are then discharged towards the slag outlet 204 under the guidance of the enclosure 404, reducing the probability of impurities clogging the filter holes. In conjunction with the fixed scraper 405, larger debris attached to the screen surface is continuously scraped off during the rotation of the filter plates, preventing accumulation and blockage, which would affect the drilling fluid passing through the filter plates, thereby improving the filtration efficiency of the drilling fluid. In conjunction with the tilting mechanism 5, the automatic cleaning of debris is effectively realized, ensuring that the filtration channel is unobstructed.

[0042] The working principle of this utility model is as follows: During use, the drilling fluid to be filtered enters through the inlet 202. The lower outlet of the inlet 202 is located directly above the first filter plate 402. The drive assembly 5 is activated, and driven by the motor 501, in conjunction with the rotating shaft 502, gear one 503, and gear two 504, the two sets of rotating frames 406 in the filter assembly 4 rotate, thereby rotating the first filter plate 402 and the second filter plate 403. This causes the first filter plate 402 and the second filter plate 403 to rotate, thus rotating the filter assembly 402 and the second filter plate 403. The filter plate 403 rotates continuously, avoiding continuous pressure in local areas, effectively dispersing the filtration load, and extending the service life of the filter screen. At the same time, the centrifugal force generated during the high-speed rotation of the filter plate actively throws off fine particulate impurities, which are then discharged towards the slag outlet 204 under the guidance of the enclosure 404, reducing the probability of impurities clogging the filter holes. In conjunction with the fixed scraper 405, larger debris adhering to the screen surface is continuously scraped off during the rotation of the filter plate, preventing accumulation and clogging, which would affect the drilling fluid passing through the filter plate, thereby improving the filtration efficiency of the drilling fluid.

[0043] Meanwhile, based on different drilling depths, the tilting mechanism 4 selects the most suitable tilt angle of the filter plate to optimize the filtration and slag removal effects for impurities generated under different working conditions. The cylinder 307 drives the moving plate 308, which is guided by the limiting block 309 and the sliding groove, thus moving stably along a straight line. This, in turn, drives the connecting rod 3010 to lift the left end of the housing 201. The right end of the housing 201 rotates around the base 301 and the rotating seat 302, thereby adjusting the angle of the housing 201 and its internal first filter plate 402 and second filter plate 403. After adjustment, the angle is locked by aligning the through hole on the fixing block 305 with the corresponding limiting hole 304 and inserting the fixing pin 306. By tilting the filter plate, gravity can be used to more efficiently remove impurities (slag). Combined with the filter assembly 4 and the drive assembly 5, this further improves the automatic cleaning effect of debris, ensuring unobstructed filtration channels.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A petroleum drilling fluid filtration device, characterized in that, It includes a base plate (1) and a filter box (2). The filter box (2) includes a box body (201) disposed on the upper side of the base plate (1). The base plate (1) is provided with an tilting mechanism (3) for adjusting the box body (201). The box body (201) is provided with a filter assembly (4) and a drive assembly (5). The tilting mechanism (3) includes a base (301) and a cylinder (307) fixedly installed on the base plate (1). A rotating seat (302) is rotatably installed on the base (301). The rotating seat (302) is fixedly connected to the housing (201). The cylinder (307) is located on the left side of the base (301). A moving plate (308) is fixedly connected to the output shaft of the cylinder (307). A connecting rod (3010) is rotatably installed on the left end of the moving plate (308). The left end of the connecting rod (3010) is rotatably connected to the bottom of the housing (201). A locking element is provided on the outside of the connecting rod (3010).

2. The oil drilling fluid filtration device according to claim 1, characterized in that: The locking component includes arc-shaped plates (303) fixedly installed on the front and rear sides of the base plate (1). The arc-shaped plates (303) are provided with a plurality of limiting holes (304). A fixing block (305) is provided on the side of the arc-shaped plates (303) close to the box body (201). The fixing block (305) is fixedly installed on the lower end of the box body (201), and the fixing block (305) is provided with a through hole for cooperating with the limiting holes (304). A fixing pin (306) is inserted between the arc-shaped plates (303) and the fixing block (305).

3. The oil drilling fluid filtration device according to claim 1, characterized in that: The lower end of the movable plate (308) is fixedly connected to a limiting block (309), and the upper end of the base plate (1) is provided with a sliding groove for sliding with the limiting block (309).

4. The oil drilling fluid filtration device according to claim 1, characterized in that: The top of the box (201) is fixedly installed with a feed inlet (202), and the inner wall of the box (201) is fixedly connected with two sets of fixing plates (203). The middle of the two sets of fixing plates (203) is rotatably connected to the filter assembly (4). The right side of the fixed plate (203) is provided with a slag outlet (204) opened on the inner wall of the box (201). The outside of the slag outlet (204) is provided with a slag guide plate (205) fixedly connected to the box (201). The bottom right end of the box (201) is fixedly installed with a discharge port (206).

5. The oil drilling fluid filtration device according to claim 4, characterized in that: The filter assembly (4) includes two sets of rotating frames (401) that are rotatably connected to two sets of fixed plates (203) respectively. The first filter plate (402) and the second filter plate (403) are fixedly connected inside the two sets of rotating frames (401) respectively. Furthermore, both sets of rotating frames (401) are provided with a barrier (404) fixedly installed on the fixed plate (203) on the outer side. Each barrier (404) is fixedly connected with a scraper (405). Both sets of rotating frames (401) are fixedly connected with a toothed ring (406) on the outer side of the lower end. The toothed ring (406) is engaged with the drive assembly (5).

6. The oil drilling fluid filtration device according to claim 5, characterized in that: The drive assembly (5) includes a gear one (503) and a gear two (504) that mesh with two sets of gear rings (406) respectively. The gear two (504) is located on the lower side of the gear one (503), and a motor (501) is fixedly mounted on the fixed plate (203) on the upper side of the gear one (503). The output shaft of the motor (501) is fixedly connected to a rotating shaft (502). The lower end of the rotating shaft (502) passes through two sets of fixing plates (203) and is rotatably connected to the two sets of fixing plates (203) respectively. The first gear (503) and the second gear (504) are both fixedly installed on the rotating shaft (502).

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