Drilling mud filtering equipment for oil exploitation

Abstract

The utility model discloses drilling mud filtering equipment for oil exploitation, which comprises a box body, the top end of the box body is provided with a feed hopper, the feed hopper is communicated with the inside of the box body, the inside of the box body is provided with a first mounting groove, the inside of the box body is provided with a screen, the two sides of the screen are provided with connecting rods, and the connecting rods are connected with the first mounting groove and the screen. One end of the connecting rod is fixedly connected with the screen, the other end of the connecting rod is provided with a roller, the upper face and the lower face of the roller are each provided with a connecting shaft, the roller is rotationally connected with the connecting rod through the connecting shafts, the roller is arranged in the first mounting groove, and the roller is slidably connected with the first mounting groove. And the feeding hopper is arranged right above the screen mesh. The problems that in the slurry filtering process of existing filtering equipment, some fine particles may cause filter screen hole blocking, and the interior of the equipment is not easy to clean are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering, in particular to a drilling mud filtering device used in petroleum mining. Background Art

[0002] Oil extraction refers to the act of digging and extracting oil from where it is stored. In the process of oil extraction, oil and gas flow from the reservoir into the bottom of the well and then rise from the bottom of the well to the wellhead. The role of oil in the national economy Oil is an important energy source. Compared with coal, it has the advantages of high energy density, convenient transportation and storage, and less pollution to the atmosphere after combustion. Fuel oil extracted from oil is the main fuel for transportation vehicles, power plant boilers, metallurgical industry and various kilns in the building materials industry. Liquefied gas and pipeline gas based on oil are high-quality fuels for urban residents' daily life. Aircraft, tanks, ships, rockets and other spacecraft also consume a lot of oil fuel.

[0003] A large amount of mud is generated in the process of oil production through drilling, and there are many solid particles in the mud, such as gravel, sand, etc. If these solid particles enter the working equipment with the mud, they may cause a certain degree of damage to the oil production equipment, so it is necessary to filter the solid particles in the mud. Most of the existing filtering equipment uses a filter screen for filtering. After filtering the mud, some fine particles may cause the filter screen to block the holes, making it difficult to clean the inside of the equipment. Therefore, a drilling mud filtering device for oil production is proposed. Utility Model Content

[0004] The utility model aims to provide a drilling mud filtering device for oil mining, which solves the problem that in the process of filtering mud with the existing filtering device, some fine particles may cause the filter screen to be blocked, making it difficult to clean the inside of the device.

[0005] The utility model is implemented as follows: a drilling mud filtering device for oil mining comprises a box body, a feed hopper is provided at the top of the box body, the feed hopper is communicated with the interior of the box body, a first mounting groove is provided inside the box body, a screen is provided inside the box body, connecting rods are provided on both sides of the screen, one end of the connecting rod is fixedly connected to the screen, the other end of the connecting rod is provided with a roller, the upper and lower surfaces of the roller are provided with connecting shafts, the roller is rotatably connected to the connecting rod through the connecting shaft, the roller is placed inside the first mounting groove, the roller is slidably connected to the first mounting groove, and the feed hopper is placed directly above the screen.

[0006] A further technical solution of the utility model is: a threaded rod is provided inside the box, the threaded rod is rotatably connected to the box, a mounting plate is provided on the threaded rod, the mounting plate is threadably connected to the threaded rod, and both ends of the threaded rod are rotatably connected to the box through bearings.

[0007] A further technical solution of the utility model is: a servo motor is provided on the box body, and an output end of the servo motor is fixedly connected to one end of the threaded rod.

[0008] A further technical solution of the utility model is: a scraper is provided on the mounting plate, the scraper is connected to the mounting plate by bolts, the scraper is adapted to the screen, and the scraper is placed inside the screen. The scraper is mainly used to remove impurities in the screen to prevent these impurities from causing pore blockage and extend the service life of the filter layer.

[0009] A further technical solution of the utility model is: a second mounting groove is provided at one end of the screen away from the servo motor, a baffle is provided on the second mounting groove, and the baffle is slidably connected to the second mounting groove. The baffle can be disassembled and assembled through the second mounting groove, and a sealing gasket is provided at the bottom end of the baffle, the main purpose of which is to form a sealed environment to prevent mud from overflowing from the installation gap.

[0010] A further technical solution of the utility model is: a support plate is provided inside the box, a second motor is provided on the support plate, a crank is fixedly connected to the output end of the second motor, and a rocker is provided on the crank.

[0011] A further technical solution of the utility model is: one end of the rocker is connected to the rocker shaft, and the other end of the rocker is fixedly connected to the screen. The rocker is fixedly connected to the screen by bolts.

[0012] A further technical solution of the utility model is: a water storage tank is provided inside the box body, a water outlet pipe is provided on the water storage tank, one end of the water outlet pipe is placed inside the box body, the other end of the water outlet pipe is placed outside the box body, and the end of the water outlet pipe placed inside the box body is connected to the water storage tank.

[0013] A further technical solution of the utility model is: a storage box is provided at the bottom end of the screen, and the storage box is detachably connected to the screen.

[0014] A further technical solution of the utility model is that a filter layer is provided inside the screen, and the size of the filter layer is adapted to the screen. The filter layer can be a filter screen, but the hardness of the filter layer is required to be high, and a softer material cannot be selected, otherwise it is not convenient for subsequent cleaning work with a scraper.

[0015] The beneficial effects of the utility model are as follows: 1. The oil drilling mud filtering equipment drives the crank through the second motor, and then the rocker connected to the crank drives the screen, so that the rollers on both sides of the screen move back and forth in the first mounting groove, achieving a vibration-like effect, while improving the filtering effect and filtering speed, it can also prevent the occurrence of hole blockage to a certain extent.

[0016] 2. The oil drilling mud filter equipment is equipped with a self-cleaning mechanism. The servo motor drives the threaded rod to rotate. The two ends of the threaded rod are rotatably connected to the box body. Therefore, the mounting plate threadedly connected to the threaded rod will make linear motion on the threaded rod, so that the scraper on the mounting plate can remove the impurities in the screen. After removing the baffle on the screen, the impurities will fall into the storage box in the box body, which is convenient for unified cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a drilling mud filtering device for oil mining provided by the utility model;

[0018] Figure 2 This is a cross-sectional view of a drilling mud filtering device for oil mining provided by the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a drilling mud filtering device for oil mining provided by the utility model;

[0020] Figure 4 The utility model is a partial enlarged schematic diagram of position A of a drilling mud filtering device for oil mining provided by the utility model.

[0021] Figure numerals: 1. Box body; 2. Feed hopper; 3. First mounting groove; 4. Servo motor; 5. Water outlet pipe; 6. Threaded rod; 7. Mounting plate; 8. Scraper; 9. Screen; 10. Filter layer; 11. Baffle; 12. Second mounting groove; 13. Storage box; 14. Water tank; 15. Support plate; 16. Second motor; 17. Crank handle; 18. Rocker; 19. Roller; 20. Connecting rod; 21. Connecting shaft. DETAILED DESCRIPTION

[0022] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present utility model, should still fall within the scope of the technical contents disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the present specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present utility model. The change or adjustment of the relative relationship, without substantial change of the technical contents, should also be regarded as the scope of the implementation of the present utility model.

[0024] Figure 1-Figure 4 The main structural components of a drilling mud filtering device for oil production are shown. The drilling mud filtering device for oil production includes a box body 1, a feed hopper 2 is provided at the top of the box body 1, the feed hopper 2 is connected to the inside of the box body 1, a first mounting groove 3 is provided inside the box body 1, a screen 9 is provided inside the box body 1, connecting rods 20 are provided on both sides of the screen 9, one end of the connecting rod 20 is fixedly connected to the screen 9, and a roller 19 is provided at the other end of the connecting rod 20. Connecting shafts 21 are provided on the upper and lower surfaces of the roller 19, and the roller is rotatably connected to the connecting rod 20 through the connecting shaft 21. The roller 19 is placed inside the first mounting groove 3, and the roller 19 is slidably connected to the first mounting groove 3. The feed hopper 2 is placed directly above the screen 9.

[0025] like Figure 2 as well as Figure 3 As shown, a support plate 15 is provided inside the box body 1, and a second motor 16 is provided on the support plate 15. A crank 17 is fixedly connected to the output end of the second motor 16, and a rocker 18 is provided on the crank 17. One end of the rocker 18 is connected to the rotating shaft of the crank 17, and the other end of the rocker 18 is fixedly connected to the screen 9. When the second motor 16 rotates, the crank 17 fixedly connected to the output end of the second motor 16 will drive the rocker 18 to make a curved motion, thereby driving the screen 9 to make a reciprocating motion on the first mounting groove 3 through the rocker 18, so as to achieve the purpose of improving the filtering effect and preventing the screen 9 and the filter layer 10 from being blocked.

[0026] like Figure 3 As shown, a major feature of the oil drilling mud filtering equipment is that a self-cleaning mechanism is provided inside it, the main working part is a scraper 8, and the driving part is a servo motor 4. A threaded rod 6 is provided inside the box body 1, and the threaded rod 6 is rotatably connected to the box body 1. A mounting plate 7 is provided on the threaded rod 6, and the mounting plate 7 is threadedly connected to the threaded rod 6. A servo motor 4 is provided on the box body 1, and the output end of the servo motor 4 is fixedly connected to one end of the threaded rod 6.

[0027] A scraper 8 is provided on the mounting plate 7, and the scraper 8 is connected to the mounting plate 7 by bolts. The scraper 8 is adapted to the screen 9 and is placed inside the screen 9. When the servo motor 4 is working, the threaded rod 6 fixedly connected to the output end of the servo motor 4 will also rotate accordingly. Since the mounting plate 7 and the threaded rod 6 are connected by threads, the mounting plate 7 will make linear motion on the threaded rod 6 when the threaded rod 6 rotates, so that the scraper 8 on the mounting plate 7 reciprocates inside the screen 9 to play a cleaning role.

[0028] The end of the screen 9 away from the servo motor 4 is provided with a second mounting groove 12, and a baffle 11 is provided on the second mounting groove 12, and the baffle 11 is slidably connected with the second mounting groove 12. The function of the baffle 11 is that when the device is in a filtering state, the baffle 11 is arranged in the second mounting groove 12 to form a sealed environment, otherwise the screen 9 has an opening and cannot operate normally; when the device is in a cleaning state, the baffle 11 needs to be removed, and the scraper 8 will send the impurities through the opening provided on the screen 9 to the storage box 13 installed at the bottom end of the screen 9.

[0029] like Figure 2 As shown, a water tank 14 is provided inside the box body 1, and a water outlet pipe 5 is provided on the water tank 14. One end of the water outlet pipe 5 is placed inside the box body 1, and the other end of the water outlet pipe 5 is placed outside the box body 1. The end of the water outlet pipe 5 placed inside the box body 1 is connected to the water tank 14.

[0030] The working principle of the drilling mud filtration equipment used in oil mining is as follows:

[0031] When the mud enters the screen 9 from the feed hopper 2 at the top of the box 1, the oil drilling mud filtering equipment drives the crank 17 through the second motor 16, and then the rocker 18 connected to the crank 17 drives the screen 9, so that the rollers 19 on both sides of the screen 9 move back and forth in the first mounting groove 3, achieving a similar vibration effect, while improving the filtering effect and filtering speed, it can also prevent the occurrence of hole blocking to a certain extent. After the filtration is completed, the oil drilling mud filtering equipment will perform self-cleaning work, and the servo motor 4 rotates to drive the threaded rod 6 to rotate. The two ends of the threaded rod 6 are connected to the box 1, so that the mounting plate 7 threadedly connected to the threaded rod 6 will make linear motion on the threaded rod 6, so that the scraper 8 on the mounting plate 7 can remove the impurities in the screen 9. After removing the baffle 11 on the screen 9, the impurities will fall into the storage box 13 in the box 1, which is convenient for unified cleaning.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling mud filtering device for oil mining, comprising a housing (1), characterized in that: A feed hopper (2) is provided at the top of the box body (1), the feed hopper (2) is communicated with the interior of the box body (1), a first mounting groove (3) is provided inside the box body (1), a screen (9) is provided inside the box body (1), connecting rods (20) are provided on both sides of the screen (9), one end of the connecting rod (20) is fixedly connected to the screen (9), and the other end of the connecting rod (20) is provided with a roller (19), the upper and lower surfaces of the roller (19) are provided with connecting shafts (21), the roller is rotatably connected to the connecting rod (20) through the connecting shaft (21), the roller (19) is placed inside the first mounting groove (3), the roller (19) is slidably connected to the first mounting groove (3), and the feed hopper (2) is placed directly above the screen (9).

2. The drilling mud filtering device for oil mining according to claim 1, characterized in that: A threaded rod (6) is provided inside the box body (1), and the threaded rod (6) is rotatably connected to the box body (1). A mounting plate (7) is provided on the threaded rod (6), and the mounting plate (7) is threadably connected to the threaded rod (6).

3. The drilling mud filtering device for oil mining according to claim 2, characterized in that: A servo motor (4) is provided on the box body (1), and an output end of the servo motor (4) is fixedly connected to one end of the threaded rod (6).

4. The drilling mud filtering device for oil mining according to claim 3 is characterized in that: A scraper (8) is provided on the mounting plate (7), the scraper (8) is connected to the mounting plate (7) by bolts, the scraper (8) is matched with the screen (9), and the scraper (8) is placed inside the screen (9).

5. The drilling mud filtering device for oil mining according to claim 4, characterized in that: A second mounting groove (12) is provided at one end of the screen (9) away from the servo motor (4), a baffle (11) is provided on the second mounting groove (12), and the baffle (11) is slidably connected to the second mounting groove (12).

6. The drilling mud filtering equipment for oil mining according to claim 1, characterized in that: A support plate (15) is provided inside the box body (1), a second motor (16) is provided on the support plate (15), an output end of the second motor (16) is fixedly connected to a crank (17), and a rocker (18) is provided on the crank (17).

7. The drilling mud filtering device for oil mining according to claim 6, characterized in that: One end of the rocker (18) is connected to the rotating shaft of the rocker handle (17), and the other end of the rocker (18) is fixedly connected to the screen (9).

8. The drilling mud filtering device for oil mining according to claim 1, characterized in that: A water storage tank (14) is provided inside the box body (1), and a water outlet pipe (5) is provided on the water storage tank (14). One end of the water outlet pipe (5) is placed inside the box body (1), and the other end of the water outlet pipe (5) is placed outside the box body (1). The end of the water outlet pipe (5) placed inside the box body (1) is connected to the water storage tank (14).

9. The drilling mud filtering device for oil mining according to claim 1, characterized in that: A storage box (13) is provided at the bottom end of the screen (9), and the storage box (13) is detachably connected to the screen (9).

10. The drilling mud filtering equipment for oil mining according to claim 1, characterized in that: A filter layer (10) is provided inside the screen (9), and the size of the filter layer (10) is adapted to that of the screen (9).

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