Petroleum drilling fluid additive adding and stirring device

Abstract

The utility model relates to the technical field of stirring equipment, in particular to a petroleum drilling fluid additive adding and stirring device, and aims to solve the technical problems that liquid medicine is easy to accumulate in a tank and the quality of subsequent products is influenced by residual liquid medicine. The device comprises a stirring box and a stirring mechanism, wherein the stirring mechanism comprises a transmission rod, a first cleaning brush, a second cleaning brush and a rotary driver; the transmission rod penetrates through the stirring box and is in running fit with the stirring box; the first cleaning brush is located in the stirring box, makes contact with the bottom wall of the stirring box and is further arranged on the transmission rod so that the first cleaning brush can rotate around the axis of the transmission rod under the working condition that the transmission rod rotates. The second cleaning brush is located in the stirring box, is in contact with the side wall of the stirring box, is also arranged on the transmission rod and can move in the axial direction of the transmission rod under the working condition that the transmission rod rotates; and the rotary driver is in transmission connection with the transmission rod. By arranging the stirring mechanism, the bottom wall and the side wall of the stirring box can be cleaned, liquid medicine is prevented from being accumulated and left, and the quality of drilling fluid is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing equipment, in particular to a stirring device for adding petroleum drilling fluid additives. Background Art

[0002] In the construction of oil drilling and workover, an open medicine preparation tank with a stirrer is mainly used to prepare drilling fluid on site. However, when using this method for a long time, the liquid medicine is easy to accumulate at the bottom and around the tank, resulting in difficult cleaning, low efficiency, and increased workload. In addition, after multiple preparations, the residues in the tank are likely to cross-contaminate with newly added drilling fluid treatment agents, leading to a decline in the quality of the prepared drilling fluid or unexpected chemical reactions, thus affecting the performance of the drilling fluid, causing complex downhole accidents, increasing the labor intensity of workers, and affecting the smooth progress of drilling operations. Content of the Utility Model

[0003] The purpose of the utility model is to provide a stirring device for adding petroleum drilling fluid additives to alleviate the technical problems in the related art that the liquid medicine is easy to accumulate in the tank and the liquid medicine residue affects the quality of subsequent products.

[0004] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0005] The stirring device for adding petroleum drilling fluid additives provided by the utility model includes: a mixing tank and a stirring mechanism, and the stirring mechanism includes a transmission rod, a first cleaning brush, a second cleaning brush, and a rotary driver;

[0006] The transmission rod passes through the mixing tank in a vertical posture and is rotationally matched with the mixing tank to be able to rotate around its own axis;

[0007] The first cleaning brush is located inside the mixing tank, contacts the bottom wall of the mixing tank, and is also arranged on the transmission rod so as to be able to rotate around the axis of the transmission rod under the condition that the transmission rod rotates;

[0008] The second cleaning brush is located inside the mixing tank, contacts the side wall of the mixing tank, and is also arranged on the transmission rod so as to be able to move along the axial direction of the transmission rod under the condition that the transmission rod rotates;

[0009] The rotary driver is in transmission connection with the transmission rod to drive the transmission rod to rotate.

[0010] Further, the stirring mechanism further includes a stirring rod;

[0011] The stirring rod is fixed to the side surface of the transmission rod and is connected to the first cleaning brush;

[0012] The first cleaning brush is located between the stirring rod and the bottom wall of the mixing tank.

[0013] Further, the stirring mechanism further includes a transmission sleeve and a limiting component;

[0014] The transmission sleeve is located above the stirring rod, sleeved on the transmission rod, and in threaded cooperation with the transmission rod;

[0015] The second cleaning brush is fixed to the transmission sleeve;

[0016] The limiting component is connected between the transmission sleeve and the stirring tank to limit the transmission sleeve from rotating along its own axial direction.

[0017] Further, the limiting component includes a sliding rod and a limiting block;

[0018] The sliding rod is vertically inserted through the second cleaning brush and fixed to the stirring tank;

[0019] The limiting block is fixedly connected to the transmission sleeve and also slidably cooperates with the sliding rod to be able to slide along the axial direction of the sliding rod.

[0020] Further, the oil drilling fluid additive adding and stirring device further includes a drying mechanism arranged outside the stirring tank, and the drying mechanism includes a fan and a heating plate;

[0021] The fan is arranged on the top wall of the stirring tank and is in transmission connection with the transmission rod so that its fan blades can rotate under the condition that the transmission rod rotates;

[0022] An installation hole penetrating through itself is provided on the top wall of the stirring tank, and the heating plate is embedded in the installation hole and is directly opposite to the fan blades.

[0023] Further, the drying mechanism further includes a support seat, and the fan includes a rotating shaft;

[0024] The support seat is fixed to the stirring tank;

[0025] The rotating shaft is rotatably cooperated with the support seat and is also belt-connected to the end of the transmission rod extending outside the stirring tank;

[0026] A plurality of the fan blades are fixedly arranged at intervals along the circumferential direction of the rotating shaft on the side surface of the rotating shaft.

[0027] Further, the oil drilling fluid additive adding and stirring device further includes a filtering mechanism arranged below the stirring tank, and the filtering mechanism includes a filtering tank, a filtering plate and a first pipeline;

[0028] The filtering plate is inserted into the filtering tank, separating the inner cavity of the filtering tank into an upper cavity and a lower cavity which are distributed up and down;

[0029] One end of the first pipeline is communicated with the upper cavity, and the other end is connected to the bottom of the mixing tank and is communicated with the inner cavity of the mixing tank.

[0030] Furthermore, the filtering mechanism further includes a water pump, and the inlet of the water pump is communicated with the lower cavity.

[0031] Furthermore, a first valve is provided on the first pipeline;

[0032] The bottom of the mixing tank is further connected with a second pipeline, the second pipeline is communicated with the mixing tank, and a second valve is provided thereon.

[0033] Furthermore, the oil drilling fluid additive adding and mixing device further includes a traveling mechanism, and the traveling mechanism includes a bottom plate, a fixed cylinder and a linear driver;

[0034] The mixing tank and the filtering mechanism are both fixed on the upper surface of the bottom plate, the fixed cylinder is fixed on the lower surface of the bottom plate, and its bottom end is open;

[0035] A plurality of the fixed cylinders are provided and are distributed in a rectangular array on the bottom plate;

[0036] The linear driver corresponds to the fixed cylinder one by one and is arranged in the fixed cylinder, and a universal wheel is fixed on its output part, and the universal wheel can extend out or retract into the fixed cylinder through the open end under the starting condition of the linear driver.

[0037] Based on the above technical solutions, the technical effects that the oil drilling fluid additive adding and mixing device provided by the present utility model can achieve are as follows:

[0038] In this oil drilling fluid additive adding and mixing device, the rotary driver is in transmission connection with the transmission rod, the transmission rod passes through the mixing tank and is respectively in transmission connection with the first cleaning brush and the second cleaning brush. Thus, when the rotary driver is started, the transmission rod rotates around its own axis, and driven by the transmission rod, the first cleaning brush rotates clockwise or counterclockwise around the axis of the transmission rod to clean the bottom of the mixing tank, and the second cleaning brush moves upward or downward along the axial direction of the transmission rod to clean the side wall of the mixing tank.

[0039] It can be seen that compared with the prior art, by setting the mixing mechanism, this oil drilling fluid additive adding and mixing device can simultaneously clean the bottom wall and the side wall of the mixing tank, avoid the accumulation and residue of the liquid medicine, and ensure the quality of the prepared drilling fluid. Description of the Drawings

[0040] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Structural schematic diagram of the oil drilling fluid additive adding and stirring device provided by an embodiment of the present utility model;

[0042] Figure 2 Cross-sectional view of the oil drilling fluid additive adding and stirring device provided by an embodiment of the present utility model;

[0043] Figure 3 Structural schematic diagram of the drying mechanism provided by an embodiment of the present utility model;

[0044] Figure 4 Cross-sectional view of the assembly of the filter box and the filter plate provided by an embodiment of the present utility model;

[0045] Figure 5 Cross-sectional view of the traveling mechanism provided by an embodiment of the present utility model.

[0046] Icon: 1 - Stirring tank; 11 - Feed inlet;

[0047] 2 - Stirring mechanism; 21 - Transmission rod; 22 - First cleaning brush; 23 - Second cleaning brush; 24 - Rotary driver; 25 - Stirring rod; 26 - Transmission sleeve; 27 - Slide rod; 28 - Limiting block;

[0048] 3 - Drying mechanism; 31 - Fan; 32 - Heating plate; 33 - Support seat; 34 - Transmission belt;

[0049] 4 - Filtering mechanism; 41 - Filter box; 42 - Filter plate; 43 - First pipeline; 44 - Water pump; 45 - First valve; 46 - Second pipeline; 47 - Second valve;

[0050] 5 - Traveling mechanism; 51 - Bottom plate; 52 - Fixed cylinder; 53 - Linear driver; 54 - Universal wheel. Specific embodiments

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0053] The following will describe in detail some embodiments of the present utility model in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the following embodiments can be combined with each other.

[0054] In oil drilling and workover operations, an open-top chemical mixing tank with a stirrer is mainly used to prepare drilling fluid on-site. However, after a long time of liquid mixing in this way, the liquid medicine is likely to accumulate at the bottom and around the tank, making it difficult to clean, with low efficiency and increased workload. In addition, after multiple preparations, the residues in the tank are prone to cross-contamination with newly added drilling fluid treatment agents, resulting in a decline in the quality of the prepared drilling fluid or unexpected chemical reactions, thus affecting the performance of the drilling fluid, causing complex downhole accidents, increasing the labor intensity of the staff, and affecting the smooth progress of drilling operations.

[0055] In view of this, the present utility model provides an oil drilling fluid additive stirring device, which includes a stirring tank 1 and a stirring mechanism 2. The stirring mechanism 2 includes a transmission rod 21, a first cleaning brush 22, a second cleaning brush 23, and a rotary driver 24. The transmission rod 21 is vertically disposed through the stirring tank 1 and is rotationally matched with the stirring tank 1 to be able to rotate around its own axis. The first cleaning brush 22 is located inside the stirring tank 1, contacts the bottom wall of the stirring tank 1, and is also disposed on the transmission rod 21 so as to be able to rotate around the axis of the transmission rod 21 under the condition that the transmission rod 21 rotates. The second cleaning brush 23 is located inside the stirring tank 1, contacts the side wall of the stirring tank 1, and is also disposed on the transmission rod 21 so as to be able to move along the axial direction of the transmission rod 21 under the condition that the transmission rod 21 rotates. The rotary driver 24 is in transmission connection with the transmission rod 21 to drive the transmission rod 21 to rotate.

[0056] In this oil drilling fluid additive stirring device, the rotary driver 24 is in transmission connection with the transmission rod 21. The transmission rod 21 is disposed through the stirring tank 1 and is respectively in transmission connection with the first cleaning brush 22 and the second cleaning brush 23. Thus, when the rotary driver 24 is started, the transmission rod 21 rotates around its own axis. Driven by the transmission rod 21, the first cleaning brush 22 rotates clockwise or counterclockwise around the axis of the transmission rod 21 to clean the bottom of the stirring tank 1, and the second cleaning brush 23 moves upward or downward along the axial direction of the transmission rod 21 to clean the side wall of the stirring tank 1.

[0057] It can be seen that, compared with the prior art, the stirring device for adding the petroleum drilling fluid additive can clean the bottom wall and the side wall of the stirring tank 1 simultaneously by arranging the stirring mechanism 2, avoiding the accumulation and residue of the liquid medicine, and ensuring the quality of the configured drilling fluid.

[0058] It should be supplemented here that, optionally, the rotary drive 24 can be a motor, which is fixed to the bottom surface of the stirring tank 1 and is in transmission connection with the lower end of the transmission rod 21. There are multiple second cleaning brushes 23. Optionally, there are two second cleaning brushes 23, and the two second cleaning brushes 23 are distributed at intervals up and down.

[0059] The following combines Figures 1 to 5 to elaborate in detail on the structure and shape of the stirring device for adding the petroleum drilling fluid additive provided in this embodiment:

[0060] Furthermore, referring to Figure 1 and Figure 2 the stirring mechanism 2 further includes multiple stirring rods 25; the multiple stirring rods 25 are fixedly arranged on the side surface of the transmission rod 21 at intervals along the circumferential direction of the transmission rod 21; the first cleaning brush 22 corresponds to each stirring rod 25, its brush handle is fixedly connected to the stirring rod 25, and the brush head contacts the bottom wall of the stirring tank 1.

[0061] Specifically, a feed inlet 11 is provided at the top of the stirring tank 1, and the drilling fluid and the additive enter the stirring tank 1 through the feed inlet 11; when the motor is started, the stirring rods 25 rotate around the axis of the transmission rod 21 driven by the transmission rod 21, so that the drilling fluid and the additive are fully mixed, ensuring that various components are evenly distributed, thereby helping to improve the stability and performance of the drilling fluid. After the configuration is completed, the motor is started again, and the first cleaning brush 22 rotates synchronously with the stirring rod 25 to clean the residue at the bottom of the stirring tank 1.

[0062] Preferably, the movement is transmitted between the transmission rod 21 and the second cleaning brush 23 by a transmission sleeve 26. Specifically, referring to Figure 2 the transmission sleeve 26 is located above the stirring rod 25, sleeved on the transmission rod 21, and is in threaded cooperation with the transmission rod 21; a limiting component is connected between the transmission sleeve 26 and the stirring tank 1, and the limiting component is used to limit the transmission sleeve 26 from rotating along its own axial direction; the second cleaning brush 23 is fixed to the transmission sleeve 26.

[0063] When the motor is started, the transmission rod 21 rotates, causing the transmission sleeve 26 to have a tendency to rotate synchronously. However, under the limitation of the limiting component, the transmission sleeve 26 moves upward or downward on the transmission rod 21, and the second cleaning brush 23 moves upward or downward synchronously with the transmission sleeve 26 to clean the side wall of the stirring tank 1.

[0064] In an embodiment of the present application, referring to Figure 2, the limiting component includes a sliding rod 27 and a limiting block 28; the sliding rod 27 is vertically inserted through the second cleaning brush 23, its upper end is fixed to the top wall of the mixing tank 1, and its lower end is fixed to the bottom wall of the mixing tank 1; the limiting block 28 is sleeved on the sliding rod 27 and fixedly connected to the transmission sleeve 26. With such a design, the rotation of the transmission sleeve 26 along with the transmission rod 21 is prevented. At the same time, when the transmission sleeve 26 moves on the transmission rod 21, the limiting block 28 synchronously moves along the axial direction of the sliding rod 27 along with the transmission sleeve 26.

[0065] In other embodiments, the limiting component includes a sliding block, the sliding block is fixed to the transmission sleeve 26, and is slidably matched with the inner wall of the mixing tank 1, and the sliding path is parallel to the axis of the transmission sleeve 26. In this way, the rotation of the transmission sleeve 26 can also be restricted, which will not be specifically elaborated here.

[0066] In the above design, by setting the limiting component, the transmission sleeve 26 can move up and down, making the cleaning operation more accurate and effective, which helps to ensure that each cleaning can cover the area to be cleaned, avoid omission, and improve the cleaning efficiency and quality.

[0067] Furthermore, referring to Figures 1 to 3 , the oil drilling fluid additive adding and mixing device further includes a drying mechanism 3 arranged outside the mixing tank 1. Specifically regarding the drying mechanism 3:

[0068] Referring to Figure 3 , the drying mechanism 3 includes a fan 31 and a heating plate 32; the fan 31 is arranged on the top wall of the mixing tank 1 and is in transmission connection with the transmission rod 21, so that its fan blades can rotate under the condition that the transmission rod 21 is rotating; an installation hole penetrating through itself is provided on the top wall of the mixing tank 1, and the heating plate 32 is embedded in the installation hole and is directly opposite to the fan blades.

[0069] Continuing to refer to Figure 3 , a support seat 33 is fixed on the top wall of the mixing tank 1; the fan 31 includes a rotating shaft, the rotating shaft is rotatably matched with the support seat 33, a first pulley is fixed to the upper end of the rotating shaft; a second pulley is fixed to the top end of the transmission rod 21 extending outside the mixing tank 1, and a transmission belt 34 is sleeved on the first pulley and the second pulley; a plurality of fan blades are fixedly arranged at intervals along the circumference of the rotating shaft on the side of the lower end of the rotating shaft.

[0070] Please continue to refer to Figure 3 , when the transmission rod 21 rotates driven by the motor, the second pulley rotates synchronously and drives the first pulley to rotate through the transmission belt 34. In this way, the fan blades rotate along with the rotating shaft and blow air towards the inner cavity of the mixing tank 1; the heating plate 32 is powered on to heat the surrounding air, and under the action of the fan 31, the hot air enters the inner cavity of the mixing tank 1.

[0071] With the above design, the humidity in the drilling fluid can be reduced, accelerating its solidification and drying processes, improving the stirring efficiency and stability, thus helping to reduce the caking and solidification phenomena that occur during the use of the drilling fluid, keeping the drilling fluid uniform and fluid, and improving the efficiency of drilling operations.

[0072] Furthermore, referring to Figure 1 、 Figure 2 and Figure 4 ,the stirring device for adding petroleum drilling fluid additives further includes a filtering mechanism 4 disposed below the stirring tank 1. The filtering mechanism 4 includes a filtering tank 41, a filtering plate 42 and a first pipeline 43; the filtering plate 42 is inserted into the filtering tank 41, separating the inner cavity of the filtering tank 41 into an upper cavity and a lower cavity which are distributed vertically; the lower end of the first pipeline 43 is communicated with the upper cavity, and the upper end is connected to the bottom of the stirring tank 1 and communicated with the inner cavity of the stirring tank 1.

[0073] Specifically, as shown in combination with Figure 2 and Figure 4 , trapezoidal chutes extending along the width direction of the filtering tank 41 are provided on two opposite inner walls of the filtering tank 41, and trapezoidal slide rails are slidably installed in the two trapezoidal chutes. Two sides of the filtering plate 42 are respectively fixedly connected to the two trapezoidal slide rails. A water suction pipe is connected to the bottom end of the filtering tank 41. One end of the water suction pipe is communicated with the lower cavity, and the other end is connected to a water pump 44 and communicated with the water inlet of the water pump 44.

[0074] After configuration, the drilling fluid enters the upper cavity of the filtering tank 41 through the first pipeline 43, and after being filtered by the filtering plate 42, it enters the lower cavity. Then, under the action of the water pump 44, the drilling fluid is pumped out of the lower cavity and discharged into the well. With this design, solid particles can be prevented from entering pumps, pipelines and other equipment in the drilling fluid circulation system, thereby reducing the risk of equipment blockage and damage, improving the reliability and service life of drilling equipment, and at the same time reducing the resistance and energy consumption of the drilling fluid circulation system, making the flow of the drilling fluid smoother, which helps to improve the efficiency of drilling operations and save energy.

[0075] In addition, it should be supplemented here that, as shown in combination with Figure 4 , a strip-shaped groove adapted to the filtering plate 42 is provided on the front side wall of the filtering tank 41. With this design, it is convenient to draw out the filtering plate 42 from the filtering tank 41 to clean the impurities filtered on the filtering plate 42. Optionally, the filtering plate 42 can be designed as a drawer-like structure, and its filtering surface is the bottom plate 51 of the drawer.

[0076] More preferably, as shown in Figure 2As shown, a first valve 45 is provided on the first pipeline 43. With such a design, the flow rate and discharging speed of the petroleum drilling fluid additive can be accurately controlled, which helps to ensure the accuracy of the drilling fluid formula, avoid excessive or insufficient addition, guarantee the smooth progress of the drilling operation. In addition, it can also reduce manual intervention, save human resources, and improve the operation efficiency.

[0077] Continuing from the above, a second pipeline 46 is further connected to the bottom of the mixing tank 1. The second pipeline 46 is communicated with the mixing tank 1, and a second valve 47 is provided thereon. With such a design, when the first cleaning brush 22 and the second cleaning brush 23 clean the mixing tank 1, or after the cleaning is completed, the second valve 47 is opened to discharge the accumulated sediments, dirt and residues, which helps to maintain the good working state of the equipment and reduce the performance degradation and failure risk caused by sediment accumulation.

[0078] In the embodiment of the present application, referring to Figure 1 and Figure 5 , the petroleum drilling fluid additive adding and mixing device further includes a traveling mechanism 5. The traveling mechanism 5 includes a bottom plate 51, a fixed cylinder 52 and a linear driver 53; the mixing tank 1 and the filtering mechanism 4 are both fixed on the upper surface of the bottom plate 51, the fixed cylinder 52 is fixed on the lower surface of the bottom plate 51, and its bottom end is open; a plurality of fixed cylinders 52 are provided and are arranged in a rectangular array on the bottom plate 51; the linear driver 53 can be an electric telescopic rod, which corresponds to the fixed cylinder 52 one by one, and is arranged in the fixed cylinder 52, and a universal wheel 54 is fixed to its output part. The universal wheel 54 can extend out or retract into the fixed cylinder 52 through the open end under the starting condition of the linear driver 53.

[0079] In the above design, the electric telescopic rod cooperates with the universal wheel 54 to drive the universal wheel 54 to extend out of the fixed cylinder 52 when the device is transferred, so that the universal wheel 54 contacts the ground to facilitate the pushing of the device; after moving in place, the electric telescopic rod drives the universal wheel 54 to retract into the fixed cylinder 52, that is, the bottom surface of the fixed cylinder 52 contacts the ground, thereby ensuring the stability of the device during operation. It can be seen that compared with the conventional mixing device, this design reduces the installation and disassembly time of the drilling fluid additive adding and mixing device, saves the time cost of operation preparation and transfer, and can be adjusted and changed according to different drilling environments and conditions, better adapting to different geological conditions, well depths and operation requirements.

[0080] The working process of the petroleum drilling fluid additive adding and mixing device provided in this embodiment is as follows:

[0081] In use, first move the device to a suitable position, and then drive the universal wheels 54 into the fixed cylinder 52 through the electric telescopic rod to fix the device; then pour the material into the mixing tank 1 from the feed port 11, and start the motor. Driven by the motor, the transmission rod 21 drives the stirring rod 25 to rotate for stirring; after the stirring is completed, open the first valve 45, and the stirred material will enter the upper cavity of the filter tank 41 through the first pipeline 43. After being filtered by the filter plate 42, it enters the lower cavity; start the water pump 44, and the liquid in the lower cavity will be pumped out and discharged into the drilling through the water outlet pipe communicated with the water outlet of the water pump 44.

[0082] Continuing from the above, after the discharge is completed, pull out the filter plate 42 and clean the impurities on it; pour water and cleaning liquid into the mixing tank 1 from the feed port 11, and start the motor again to make the transmission rod 21 rotate, thereby driving the stirring rod 25 to rotate around the axis of the transmission rod 21, and the transmission sleeve 26 moves along the axial direction of the transmission rod 21. In this way, the first cleaning brush 22 rotates synchronously with the stirring rod 25, and the second cleaning brush 23 moves synchronously with the transmission sleeve 26 to clean the inner wall of the mixing tank 1 and sweep up the residues; after the cleaning is completed, open the second valve 47 to discharge the mixture of water, cleaning liquid and impurities from the second pipeline 46.

[0083] Continuing from the above, when the transmission rod 21 rotates, driven by the transmission belt 34, the rotating shaft drives the fan blades to rotate, and the blown air becomes hot air through the heating plate 32, so as to dry the cleaned mixing tank 1.

[0084] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for adding and stirring an additive to oil drilling fluid, characterized in that: include: A stirring box (1) and a stirring mechanism (2), wherein the stirring mechanism (2) comprises a transmission rod (21), a first cleaning brush (22), a second cleaning brush (23) and a rotary driver (24); The transmission rod (21) is vertically disposed in the mixing box (1) and is rotationally matched with the mixing box (1) so as to be able to rotate around its own axis. The first cleaning brush (22) is located in the mixing box (1) and in contact with the bottom wall of the mixing box (1), and is also arranged on the transmission rod (21) so as to be able to rotate around the axis of the transmission rod (21) when the transmission rod (21) rotates; The second cleaning brush (23) is located in the mixing box (1) and in contact with the side wall of the mixing box (1), and is also arranged on the transmission rod (21) so as to be able to move along the axial direction of the transmission rod (21) when the transmission rod (21) rotates; The rotary driver (24) is in driving connection with the transmission rod (21) to drive the transmission rod (21) to rotate.

2. The device for adding and stirring an additive to petroleum drilling fluid according to claim 1, characterized in that: The stirring mechanism (2) further comprises a stirring rod (25); The stirring rod (25) is fixed to the side of the transmission rod (21) and connected to the first cleaning brush (22); The first cleaning brush (22) is located between the stirring rod (25) and the bottom wall of the stirring box (1).

3. The device for adding and stirring an additive to oil drilling fluid according to claim 1, characterized in that: The stirring mechanism (2) further comprises a transmission sleeve (26) and a limiting component; The transmission sleeve (26) is located above the stirring rod (25), is sleeved on the transmission rod (21), and is threadably matched with the transmission rod (21); The second cleaning brush (23) is fixed to the transmission sleeve (26); The limiting assembly is connected between the transmission sleeve (26) and the mixing box (1) to limit the transmission sleeve (26) from rotating along its own axis.

4. The device for adding and stirring an additive to oil drilling fluid according to claim 3, characterized in that: The limiting assembly comprises a slide bar (27) and a limiting block (28); The sliding rod (27) is vertically inserted into the second cleaning brush (23) and is fixed to the mixing box (1); The limit block (28) is fixedly connected to the transmission sleeve (26) and is also slidably matched with the slide rod (27) so as to be able to slide along the axial direction of the slide rod (27).

5. The device for adding and stirring an additive to petroleum drilling fluid according to claim 1, characterized in that: The petroleum drilling fluid additive adding and stirring device further comprises a drying mechanism (3) arranged outside the stirring box (1), and the drying mechanism (3) comprises a fan (31) and a heating plate (32); The fan (31) is arranged on the top wall of the mixing box (1) and is drivingly connected to the transmission rod (21) so that its blades can rotate when the transmission rod (21) rotates; The top wall of the mixing box (1) is provided with a mounting hole penetrating the mixing box, and the heating plate (32) is embedded in the mounting hole and directly opposite to the fan blade.

6. The device for adding and stirring an additive to petroleum drilling fluid according to claim 5, characterized in that: The drying mechanism (3) further comprises a support seat (33), and the fan (31) comprises a rotating shaft; The support seat (33) is fixed to the mixing box (1); The rotating shaft is rotatably matched with the supporting seat (33) and is also connected to a belt at the end of the transmission rod (21) extending outside the mixing box (1); A plurality of the fan blades are fixed to the side surface of the rotating shaft at intervals along the circumferential direction of the rotating shaft.

7. The device for adding and stirring an additive to petroleum drilling fluid according to claim 1, characterized in that: The petroleum drilling fluid additive adding and stirring device further comprises a filtering mechanism (4) arranged below the stirring box (1), wherein the filtering mechanism (4) comprises a filtering box (41), a filtering plate (42) and a first pipeline (43); The filter plate (42) is plugged into the filter box (41) to separate the inner cavity of the filter box (41) into an upper cavity and a lower cavity which are distributed upward and downward; One end of the first pipe (43) is connected to the upper chamber, and the other end is connected to the bottom of the mixing box (1) and is connected to the inner chamber of the mixing box (1).

8. The device for adding and stirring an additive to petroleum drilling fluid according to claim 7, characterized in that: The filtering mechanism (4) further comprises a water pump (44), the inlet of the water pump (44) being connected to the lower chamber.

9. The device for adding and stirring an additive to petroleum drilling fluid according to claim 7, characterized in that: The first pipeline (43) is provided with a first valve (45); The bottom of the mixing box (1) is also connected to a second pipeline (46), the second pipeline (46) is in communication with the mixing box (1), and a second valve (47) is provided on the second pipeline.

10. The device for adding and stirring an additive to petroleum drilling fluid according to claim 7, characterized in that: The petroleum drilling fluid additive adding and stirring device further comprises a running mechanism (5), wherein the running mechanism (5) comprises a bottom plate (51), a fixing cylinder (52) and a linear drive (53); The mixing box (1) and the filtering mechanism (4) are both fixed to the upper surface of the bottom plate (51), and the fixing cylinder (52) is fixed to the lower surface of the bottom plate (51), and its bottom end is open; A plurality of the fixing cylinders (52) are provided and are distributed in a rectangular array on the bottom plate (51); The linear drive (53) corresponds to the fixed cylinder (52) one by one and is arranged in the fixed cylinder (52), and a universal wheel (54) is fixed to its output part. The universal wheel (54) can extend or retract into the fixed cylinder (52) through the opening when the linear drive (53) is started.

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