Automatic dosing device for oilfield development with quantity control mechanism

Abstract

The utility model relates to an automatic dosing device for oilfield development with control mechanism, including the mixing jar, the lower part of mixing jar is provided with base, the front end of mixing jar is provided with the collecting box under the base, the upper portion of collecting box is provided with the dosing jar, the inside of dosing jar is provided with the inner chamber, the upper portion of dosing jar is provided with the first drive part, the connecting pipe is connected between mixing jar and dosing jar, the outside of connecting pipe is provided with the metering pump, one end of base upper portion is provided with the controller, the upper end in dosing jar is provided with the connecting shaft, one end of connecting shaft is provided with the stirring subassembly, is used for the stirring of drug, one side of dosing jar is provided with the second drive part, through setting up the pulverization blade can effectively pulverize the solid medicament of input, prevent the insufficient solution and pipeline blockage caused by the agglomeration, through the stirring subassembly realizes the full mixing of medicament and solvent, improves the dissolution efficiency and uniformity, through the metering pump accurate control of the flow of liquid medicine, realizes accurate dosing.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic chemical dosing devices for oilfield development with a quantity control mechanism, and particularly to an automatic chemical dosing device for oilfield development with a quantity control mechanism. Background Technology

[0002] During the oilfield extraction process, a lot of wastewater is generated. Therefore, chemical dosing devices are used to remove oil and filter it to prevent pollutants from damaging the environment. Chemical dosing in oilfields mainly involves tools such as dosing pumps and tanks to induce chemical, biological reactions and some physical changes. Its main functions are to kill bacteria in the pretreated water, aggregate crude oil and various suspended solids in the water, and remove oxygen.

[0003] The prior art patent CN219194543U discloses an automatic chemical dosing device for oilfield development, including a dosing tank. Both ends of the bottom of the dosing tank are connected to a first discharge pipe, and a first solenoid valve is detachably installed on each of the two sets of first discharge pipes. Measuring boxes are connected to the other side of each set of first discharge pipes. A servo motor is detachably installed on one side of the outer wall of each measuring box. The drive output of the servo motor is connected to a transmission shaft, and a drive plate is detachably installed on the other end of each set of transmission shafts. This invention can drive the servo motor to rotate the drive plate, pouring the chemical from the weighing box into the second discharge pipe and concentrating it in the third discharge pipe. Simultaneously, while one measuring box is adding chemical, the other measuring box is weighing the chemical, ensuring that the dosing tank can not only weigh the chemical but also dosing continuously, greatly improving dosing efficiency.

[0004] However, existing automatic dosing devices for oilfield development, in accordance with the aforementioned patent, mainly handle liquid or dissolved / suspended agents. For solid powder agents that need to be added, if there are clumps or insufficient dissolution, they cannot be crushed. During the dosing process, solid drugs can easily cause blockages when passing through the pipeline, and there is no mechanism for controlling the amount of drugs added. At the same time, impurities in the drugs cannot be filtered, affecting the efficiency of subsequent dosing operations. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic dosing device for oilfield development with a metering control mechanism. It has the advantages of accurate metering of chemicals, continuous and efficient dosing, and assistance in clearing dosing pipelines. It solves the problems of traditional dosing devices, such as inability to add chemicals quantitatively, inability to crush solid chemicals, low dosing efficiency, and easy pipeline blockage.

[0006] The technical solution of this utility model is as follows: an automatic dosing device for oilfield development with a metering control mechanism, including a mixing tank, a base below the mixing tank, a collection box located below the base at the front end of the mixing tank, a dosing tank above the collection box, an inner cavity inside the dosing tank, a first driving component above the dosing tank, a connecting pipe connecting the mixing tank and the dosing tank, a metering pump outside the connecting pipe, a controller at one end above the base, a connecting shaft at the upper end inside the dosing tank, a stirring assembly at one end of the connecting shaft for stirring the drug, a second driving component on one side of the dosing tank, a rotating rod inside the dosing tank connected to the output end of the second driving component, a pulverizing blade outside the rotating rod, five pulverizing blades arranged in a horizontal array, a filter frame inside the dosing tank, mounting blocks fixedly connected to the left and right sides inside the dosing tank, a sliding groove inside each mounting block, movable blocks inside the sliding groove fixedly connected to the left and right sides of the filter frame, a small vibrator below the movable block, and a spring sleeved on the outside of the small vibrator.

[0007] Furthermore, the first driving component includes a first motor, the output end of which is connected to a connecting shaft. The connecting shaft is driven to rotate by the first motor (crushing: the second motor drives the rotating rod and crushing blades and stirring: the connecting shaft and stirring assembly driven by the first motor are two independent driving systems).

[0008] Furthermore, the stirring assembly includes a stirring shaft, to which stirring rods are externally connected. There are four stirring rods arranged in a circular array. Stirring blades are provided on both the left and right sides of the stirring shaft. The stirring shaft is coaxially connected to the connecting shaft and is driven to rotate by a first motor. The stirring rods are fixed on the stirring shaft to promote the full mixing of the agent and the solvent, prevent the agent from precipitating or clumping, and improve the dissolution efficiency and mixing uniformity.

[0009] Furthermore, the second driving component includes a second motor, which drives the rotation of the rotating rod. The rotation of the rotating rod drives the five crushing blades to rotate together, thereby powerfully cutting and crushing the solid powder medicine entering the dosing tank.

[0010] Furthermore, the filter frame is equipped with movable blocks on both sides that engage with the sliding grooves in the mounting block. A small vibrator drives the movable blocks to vibrate up and down in the sliding grooves, thereby improving the filtration efficiency of the filter frame (the filter frame can be slidably installed in the sliding grooves of the mounting block via the movable blocks).

[0011] Furthermore, a small vibrator is fixed below the movable block, and its vibration is transmitted to the filter frame through the movable block (the small vibrator is directly fixed below the movable block, and the vibration is directly transmitted to the filter frame). A spring is sleeved on the outside of the small vibrator for buffering and protection. The elasticity of the spring (the spring sleeved on the outside of the vibrator provides elastic reset, forming a vibration transmission and buffering system of "vibrator-movable block-filter frame-spring") allows the filter frame to generate high-frequency micro-amplitude vibration under the drive of the small vibrator, which is used to effectively shake off the fine particles and impurities attached to the filter screen and prevent the filter screen pores from being blocked (the filtration in this article is not static filtration, but a dynamic self-cleaning system is constructed).

[0012] Furthermore, the bottom of the dosing tank is equipped with a discharge port, which is located at the lowest point of the bottom of the dosing tank. The discharge port is connected to the inlet of the metering pump through a pipe. The treated liquid flows out through this port, enters the metering pump for precise metering, and is then transported to the mixing tank through a connecting pipe.

[0013] The beneficial effects of this utility model are: This automatic dosing device for oilfield development, equipped with a volume control mechanism, allows the pulverizing system to operate at extremely high speeds for powerful cutting ("powerful cutting and pulverizing"), while the stirring system operates at a suitable speed for mixing, ensuring uniform dispersion ("promoting thorough mixing of reagents and solvents"). The two systems operate in parallel without interference, achieving an optimal balance between "efficient pulverization" and "thorough mixing," which is impossible with simple combinations. The filtration mechanism, through a synergistic design of chute guidance, direct vibration transmission, and spring buffering, achieves stable and efficient self-cleaning, solving the problems of easy clogging and frequent shutdowns for cleaning in traditional filtration devices when handling solid-containing solutions, thus ensuring the continuity and stability of the dosing process. By integrating pulverizing, stirring, and filtering functions within the dosing tank, it provides one-stop pretreatment of solid reagents, effectively solving the chain reaction of technical problems during solid reagent dosing: 'caking-uneven dissolution-pipeline blockage-inaccurate metering,' achieving fully automated and stable operation from reagent input to precise metering. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the automatic dosing device for oilfield development with a dosage control mechanism according to this utility model; Figure 2 This utility model Figure 1 A magnified schematic diagram of the three-dimensional structure at point A; Figure 3 This is a schematic diagram of the internal structure of the cross-section of the dosing tank of this utility model; Figure 4 This utility model Figure 3 A magnified schematic diagram of the three-dimensional structure at point B; Figure 5This is a partially enlarged structural diagram of the stirring mechanism of this utility model.

[0015] In the diagram: 1. Mixing tank; 2. Base; 3. Connecting pipe; 4. Dosing tank; 5. Collection box; 6. First motor; 7. Controller; 8. Metering pump; 9. Second motor; 10. Inner cavity; 11. Rotating rod; 12. Crushing blade; 13. Filter frame; 14. Discharge port; 15. Mounting block; 16. Movable block; 17. Small vibrator; 18. Spring; 19. Connecting shaft; 20. Stirring rod; 21. Stirring shaft; 22. Stirring blade. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 This embodiment of an automatic chemical dosing device for oilfield development with a metering control mechanism includes a mixing tank 1, a base 2 below the mixing tank 1, a collection box 5 located below the base 2 at the front end of the mixing tank 1, a dosing tank 4 above the collection box 5, an inner cavity 10 inside the dosing tank 4, a first driving component above the dosing tank 4, a connecting pipe 3 connecting the mixing tank 1 and the dosing tank 4, a metering pump 8 outside the connecting pipe 3, a controller 7 at one end above the base 2, a connecting shaft 19 at the upper end inside the dosing tank 4, and a stirring assembly at one end of the connecting shaft 19. For stirring the medicine, a second driving component is provided on one side of the dosing tank 4. The output end of the second driving component is connected to a rotating rod 11 located inside the dosing tank 4. A crushing blade 12 is provided on the outside of the rotating rod 11. Five crushing blades 12 are arranged in a horizontal array. A filter frame 13 is provided inside the dosing tank 4. Mounting blocks 15 are fixedly connected to both the left and right sides inside the dosing tank 4. A sliding groove is provided inside both mounting blocks 15. Movable blocks 16 located inside the sliding groove are fixedly connected to both the left and right sides of the filter frame 13. A small vibrator 17 is provided below the movable block 16. A spring 18 is sleeved on the outside of the small vibrator 17.

[0018] In this embodiment, the pulverizing blade 12 can effectively pulverize the added solid medicine, preventing insufficient dissolution and pipe blockage caused by clumping; the stirring assembly can fully mix the medicine and solvent, improving dissolution efficiency and uniformity; and the metering pump 8 can precisely control the flow rate of the medicine, achieving accurate drug addition.

[0019] Please see Figure 1 and Figure 5 In this embodiment, the first driving component includes a first motor 6, the output end of which is connected to a connecting shaft 19. The first motor 6 drives the connecting shaft 19 to rotate. The stirring assembly includes a stirring shaft 21, and stirring rods 20 are connected to the outside of the stirring shaft 21. There are four stirring rods 20 arranged in a ring array. Stirring blades 22 are provided on both the left and right sides of the stirring shaft 21. The stirring shaft 21 is coaxially connected to the connecting shaft 19 and is driven to rotate by the first motor 6. The stirring rods 20 are fixed on the stirring shaft 21 to promote the full mixing of the drug and the solvent, prevent the drug from precipitating or clumping, and improve the dissolution efficiency and mixing uniformity. (The crushing: the second motor drives the rotating rod and the crushing blades 12 and the stirring: the first motor drives the connecting shaft 19 and the stirring assembly are two independent driving systems.)

[0020] It should be noted that the annular array of stirring rods 20, together with the stirring blades 22 on both sides of the stirring shaft 21, can form a multi-dimensional stirring flow field in the dosing tank 4, significantly enhancing the mixing effect, ensuring that the agent is quickly and evenly dispersed in the solvent, effectively avoiding local high concentrations or precipitation, and providing a reliable guarantee for subsequent accurate metering and stable dosing.

[0021] Please see Figure 3 In this embodiment, the second driving component includes a second motor 9, which drives the rotation of the rotating rod 11. The rotation of the rotating rod 11 drives the five crushing blades 12 to rotate together, thereby powerfully cutting and crushing the solid powder medicine entering the dosing tank 4.

[0022] It should be noted that the five horizontally arrayed crushing blades 12 form a dense cutting area when rotating at high speed, which can efficiently crush large particles or clumps of solid agents into fine particles step by step, greatly improving the dissolution rate and solubility of the agent. This effectively prevents pipeline blockage caused by excessively large agent particles from the source, ensuring the continuity and stability of the dosing process.

[0023] Please see Figures 3-4In this embodiment, the filter frame 13 is engaged with the sliding groove in the mounting block 15 via the movable blocks 16 on both sides (the filter frame 13 can be slidably installed in the sliding groove of the mounting block 15 via the movable blocks 16). The movable blocks 16 are driven by a small vibrator 17 to vibrate up and down in the sliding groove (the small vibrator 17 is directly fixed below the movable blocks 16, and the vibration is directly transmitted to the filter frame 13), which is used to improve the filtration efficiency of the filter frame 13. The small vibrator 17 is fixed below the movable blocks 16, and its vibration is transmitted to the filter frame 13 through the movable blocks 16. The spring 18 (the spring 18 is sleeved on the outside of the vibrator to provide elastic reset, forming a vibration transmission and buffering system of "vibrator-movable block-filter frame-spring") is sleeved on the outside of the small vibrator 17 for buffering and protection. The elasticity of the spring 18 enables the filter frame 13 to generate high-frequency micro-amplitude vibration under the drive of the small vibrator 17, which is used to effectively shake off the fine particles and impurities attached to the filter screen of the filter frame 13 and prevent the filter screen pores from being blocked (the filtration in this article is not static filtration, but a dynamic self-cleaning system is constructed).

[0024] It should be noted that the filter frame 13 achieves stable guidance through the sliding groove of the movable block 16 and the mounting block 15. The vibration generated by the small vibrator 17 is efficiently transmitted to the filter frame 13 through the movable block 16. With the elastic reset effect of the spring 18, the filter frame 13 continuously generates high-frequency micro-amplitude vibration, which not only effectively prevents the filter screen from clogging, but also makes it easy to pull out the filter frame 13 along the sliding groove for thorough cleaning or replacement. The structure is reasonably designed, taking into account both self-cleaning function and ease of maintenance.

[0025] Please see Figures 1-3 In this embodiment, the bottom of the dosing tank 4 is provided with a discharge port 14, which is located at the lowest point of the bottom of the dosing tank 4. The discharge port 14 is connected to the inlet of the metering pump 8 through a pipe. The treated liquid flows out through this port, enters the metering pump 8 for precise metering, and is then transported to the mixing tank 1 through the connecting pipe 3.

[0026] It should be noted that the discharge port 14 is located at the lowest point of the bottom of the dosing tank 4, which is conducive to the complete discharge of the liquid under the action of gravity, avoiding residue and ensuring the accuracy of the dosage each time. At the same time, this design facilitates the cleaning and maintenance of the tank and ensures the continuity and stability of the liquid from treatment to metering and transportation.

[0027] The working principle of the above embodiments is as follows: In use, the controller 7 starts the second motor 9, which acts as the second driving component. Its output drives the rotating rod 11 to rotate at high speed. The five horizontally arrayed pulverizing blades 12 fixed to the outside of the rotating rod 11 also rotate at high speed, powerfully cutting and pulverizing the added solid powder medicine, effectively solving the problem of medicine agglomeration and ensuring that the medicine particles are fine and uniform. At the same time as pulverization, the controller 7 starts the first motor 6, which acts as the first driving component. Its output drives the stirring shaft 21 to rotate through the connecting shaft 19, which in turn drives the stirring rod 20 and the stirring blades 22 on the left and right sides to rotate, fully stirring and mixing the medicine and solvent such as water in the dosing tank 4. (The first motor 6 and the second motor 9 can be independently controlled by the controller 7 to start, stop and speed up, so that when large pieces are added...) When using solid reagents, the high-speed second motor 9 can be started first for powerful pulverization. After the reagents are basically pulverized, the first motor 6 is started for mixing and stirring, achieving staged and efficient treatment. The reagent solution enters the metering pump 8 through the pipeline. The controller 7 precisely controls the operation of the metering pump 8 according to the preset dosage and dosing rate, achieving accurate metering and control of the reagent flow rate. The metered reagent solution is transported to the mixing tank 1 through the connecting pipe 3, finally completing the automatic and precise dosing process to the oilfield wastewater treatment system. Undissolved particles, impurities, or incompletely pulverized residues that may exist in the reagent solution are filtered through the filter frame 13. The "precise control" of the metering pump 8 is possible because the reagent solution has undergone pretreatment of pulverization, stirring, and filtration, ensuring its fluidity and uniformity. If the reagent solution contains large particles or clumps, it is difficult for any metering pump to accurately measure. Therefore, the effectiveness of the "quantity control" function depends on the front-end "pulverization + stirring + filtration" system, which further proves the indivisibility and synergy of each part.

[0028] It should be noted that the control method of this utility model is controlled by the controller 7. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic chemical dosing device for oilfield development with a dosage control mechanism, comprising a mixing tank (1), characterized in that: A base (2) is provided below the mixing tank (1). A collection box (5) is provided at the front end of the mixing tank (1) below the base (2). A dosing tank (4) is provided above the collection box (5). An inner cavity (10) is provided inside the dosing tank (4). A first driving component is provided above the dosing tank (4). A connecting pipe (3) is connected between the mixing tank (1) and the dosing tank (4). A metering pump (8) is provided outside the connecting pipe (3). A controller (7) is provided at one end above the base (2). A connecting shaft (19) is provided at the upper end inside the dosing tank (4). A stirring component is provided at one end of the connecting shaft (19) for stirring the drug. A second driving component is provided on the side, and the output end of the second driving component is connected to a rotating rod (11) located inside the dosing tank (4). A crushing blade (12) is provided on the outside of the rotating rod (11). There are five crushing blades (12) arranged in a horizontal array. A filter frame (13) is provided inside the dosing tank (4). Mounting blocks (15) are fixedly connected to the left and right sides inside the dosing tank (4). A sliding groove is provided inside the two mounting blocks (15). Movable blocks (16) located inside the sliding groove are fixedly connected to the left and right sides of the filter frame (13). A small vibrator (17) is provided below the movable block (16). A spring (18) is sleeved on the outside of the small vibrator (17).

2. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 1, characterized in that: The first driving component includes a first motor (6), the output end of which is connected to a connecting shaft (19), and the connecting shaft (19) is driven to rotate by the first motor (6).

3. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 2, characterized in that: The stirring assembly includes a stirring shaft (21), and stirring rods (20) are connected to the outside of the stirring shaft (21). There are four stirring rods (20) arranged in a ring array. Stirring blades (22) are provided on both the left and right sides of the stirring shaft (21). The stirring shaft (21) is coaxially connected to the connecting shaft (19) and is driven to rotate by the first motor (6). The stirring rods (20) are fixed on the stirring shaft (21) to promote the full mixing of the agent and the solvent, prevent the agent from precipitating or clumping, and improve the dissolution efficiency and mixing uniformity.

4. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 1, characterized in that: The second driving component includes a second motor (9), which drives the rotation of the rotating rod (11). The rotation of the rotating rod (11) drives the five crushing blades (12) to rotate together, so as to forcefully cut and crush the solid powder medicine entering the dosing tank (4).

5. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 1, characterized in that: The filter frame (13) is engaged with the sliding groove in the mounting block (15) by the movable blocks (16) on both sides. The movable blocks (16) are driven to vibrate up and down in the sliding groove by a small vibrator (17) to improve the filtration efficiency of the filter frame (13).

6. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 1, characterized in that: The small vibrator (17) is fixed below the movable block (16), and its vibration is transmitted to the filter frame (13) through the movable block (16). The spring (18) is sleeved on the outside of the small vibrator (17) for buffering and protection. The elasticity of the spring (18) enables the filter frame (13) to generate high-frequency micro-amplitude vibration under the drive of the small vibrator (17), which is used to effectively shake off the fine particles and impurities attached to the filter screen of the filter frame (13) and prevent the filter screen pores from being blocked.

7. An automatic chemical dosing device for oilfield development with a dosage control mechanism according to claim 1, characterized in that: The bottom of the dosing tank (4) is provided with a discharge port (14). The discharge port (14) is located at the lowest point of the bottom of the dosing tank (4). The discharge port (14) is connected to the inlet of the metering pump (8) through a pipe. The treated liquid flows out through this port and enters the metering pump (8) for accurate metering. Then it is transported to the mixing tank (1) through the connecting pipe (3).

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