An oil well cement admixture adding and mixing device

Abstract

The present application relates to cement sample preparation technical field, more specifically, it relates to a kind of oil well cement admixture adding mixing equipment, including base, the base one side is provided with lifting mechanism, and the sliding table of lifting mechanism is fixedly installed with support platform, driving motor and multiple groups of stirring mechanism are arranged on the support platform, and the driving motor is rotated by synchronous mechanism driving multiple groups of stirring mechanism;Positioning seat is arranged on the base, and multiple groups of mixing cylinders are arranged in the positioning seat, and the multiple groups of mixing cylinders correspond to multiple groups of stirring mechanism, the present application solves the problem that traditional sequential mixing experiment mode needs to be stirred one by one proportion, record and switch, resulting in long period of multiple proportion experiments, cannot meet the high requirement of time efficiency for cementing construction, and currently fast detachable stirrer is prone to vibration noise when stirring.

Description

Technical Field

[0001] This invention relates to the field of cement sample preparation technology, and more specifically, to an oil well cement admixture mixing device. Background Technology

[0002] Oil well cement plays a vital role in oil extraction. It is mainly used for cementing operations in oil wells to ensure the stability and sealing of the wells, prevent accidents such as blowouts and leaks, and ensure the safe and efficient operation of oil extraction. The addition of admixtures is a key means to optimize the performance of oil well cement. By adding admixtures in a reasonable manner, key performance indicators such as cement setting time, strength development, and fluidity can be adjusted to adapt to different geological conditions and construction requirements.

[0003] However, due to differences in chemical composition and particle size distribution among different batches of oil well cement, the optimal mixing ratio is not fixed when mixed with admixtures. In order to ensure that oil well cement can achieve the best performance in practical applications, it is necessary to accurately determine the optimal mixing ratio of cement with admixtures for each batch through experiments. This process is of great significance for ensuring cementing quality, improving oil extraction efficiency, and reducing production costs.

[0004] Currently, when conducting experiments on the mixing ratio of oil well cement and admixtures, the method of sequential mixing is commonly adopted. In specific operations, the experimenters need to add cement and admixtures to a single mixing container in sequence according to different preset ratios for mixing. After the mixing of one ratio of the sample is completed and the relevant data is recorded, the same operation is performed on the next ratio of the sample.

[0005] This method of sequential mixing experiments can only test one proportion of the mixed sample at a time. When multiple different proportions need to be tested, the entire experimental process will become very long. In the oil extraction industry, time is cost. An excessively long experimental cycle will not only delay the preparation of oil well cement and affect the timeliness of cementing construction, but may also increase production costs due to factors such as market fluctuations.

[0006] Furthermore, after each operation, the agitator needs to be disassembled and cleaned to avoid errors in subsequent mixing ratios. To facilitate disassembly, the agitator is generally designed with a quick-release structure. However, the quick-release structure results in unstable agitator installation. During mixing, the agitator shakes, causing the entire equipment to vibrate and generating significant vibration noise.

[0007] To address the aforementioned issues, a mixing and adding equipment for oil well cement admixtures is proposed. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the problems existing in the prior art, the present invention provides an oil well cement admixture mixing device to solve the problem mentioned in the background art that the traditional sequential mixing experiment method requires stirring-recording-switching at each ratio, resulting in a long multi-ratio experiment cycle, which cannot meet the high timeliness requirements of cementing construction, and the problem that the current quick-release mixer is prone to vibration and noise during mixing.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the present invention provides the following technical solution: an oil well cement admixture mixing device, comprising a base, a lifting mechanism provided on one side of the base, and a support plate fixedly installed on the slide of the lifting mechanism, a drive motor and multiple sets of stirring mechanisms provided on the support plate, and the drive motor driving the multiple sets of stirring mechanisms to rotate through a synchronization mechanism;

[0012] The base is provided with a positioning seat, and the positioning seat is provided with multiple sets of mixing cylinders, which correspond to multiple sets of stirring mechanisms.

[0013] The present invention is further configured such that the synchronization mechanism includes a main gear fixedly connected to the output shaft of the drive motor, a support rod assembly disposed on the support plate and arranged in a circular array on the outer ring of the main gear, and a secondary gear rotatably mounted on the support rod assembly via a bearing and meshing with the main gear.

[0014] The present invention is further configured such that the support platform has a transmission hole for the output shaft of the drive motor to pass through, and the support platform has mounting holes arranged in a ring array for mounting the support rod assembly.

[0015] The support rod assembly includes a plug rod adapted to the mounting hole, a retaining ring disposed on the circumferential side wall of the plug rod, and a locking bolt disposed on the top end of the plug rod.

[0016] The present invention is further configured such that a insertion hole is provided at the bottom end of the insertion rod, and a spring cavity is provided on the inner wall of the insertion hole, wherein a return spring and a retaining ball are provided in the spring cavity;

[0017] The stirring mechanism consists of a plug-in assembly and a stirrer, and the plug-in assembly has a snap-fit ​​groove, which is matched with a snap-fit ​​ball.

[0018] The present invention is further configured such that a first helical tooth ring is provided at the bottom end of the auxiliary gear;

[0019] The plug-in assembly includes a shaft that is matched and plugged into the plug-in hole, a drive seat disposed at the lower end of the shaft, and a second helical toothed ring disposed on the drive seat.

[0020] The present invention is further configured such that a guide surface is provided at the top end of the insertion hole;

[0021] The top of the shaft is provided with a tapered head, and the tapered angle of the tapered head is smaller than the guide surface angle.

[0022] The present invention is further configured such that a guide ring is provided at the lower end of the circumferential sidewall of the shaft.

[0023] The present invention is further configured such that the width of the snap-fit ​​groove is greater than the snap-fit ​​area of ​​the snap-fit ​​ball.

[0024] The present invention is further configured such that a protective plate is provided on the drive seat, and the protective plate is located below the second helical tooth ring, and the protective plate and the top of the mixing cylinder are correspondingly matched.

[0025] The present invention is further configured such that a control host is connected to one side of the lifting mechanism via a wire.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides an oil well cement admixture mixing device, which has the following beneficial effects:

[0028] 1. In this invention, by setting up multiple stirrers and mixing cylinders and driving them with a synchronous structure, the synchronous rotation of multiple sets of stirrers is achieved, ensuring that all stirrers work at the same speed and time parameters. Multiple mixing experiments with different proportions can be completed in a single operation, greatly shortening the experimental cycle.

[0029] 2. This invention achieves a design where the first and second helical toothed rings rotate in opposite directions, allowing them to mesh close to each other and move away from each other. This design drives the shaft upwards during stirring, enabling the shaft to be axially positioned at both ends, thereby improving the stability of the stirrer, reducing radial sway, and thus reducing equipment vibration and noise. At the same time, when disassembling the stirrer, the rotational movement of the first and second helical toothed rings causes the shaft to move downwards, disengaging the retaining ball from the retaining groove, thus enabling quick disassembly of the stirrer. Attached Figure Description

[0030] Figure 1 A schematic diagram of the overall structure of a mixing equipment for adding cement admixtures to oil wells.

[0031] Figure 2 An exploded structural diagram of the supporting platform, stirring mechanism, and synchronization mechanism.

[0032] Figure 3 This is a schematic diagram of the installation structure between the support rod assembly and the support platform.

[0033] Figure 4This is a schematic diagram of the snap-fit ​​structure between the plug-in assembly and the plug rod.

[0034] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0035] Figure 6 This is a schematic diagram of the stirring mechanism.

[0036] Figure 7 This is a schematic diagram showing the state and structure of the first and second helical toothed rings after the stirring mechanism and support rod assembly are connected.

[0037] In the diagram: 1. Base; 101. Positioning seat; 102. Mixing cylinder; 2. Lifting mechanism; 3. Support plate; 301. Transmission hole; 302. Mounting hole; 4. Drive motor; 5. Stirring mechanism; 501. Stirrer; 502. Snap-fit ​​groove; 503. Protective plate; 6. Synchronization mechanism; 601. Main gear; 602. Secondary gear; 603. First helical gear ring; 7. Support rod assembly; 701. Insert rod; 702. Retaining ring; 703. Locking bolt; 704. Insertion hole; 705. Spring cavity; 706. Return spring; 707. Snap-fit ​​ball; 708. Guide surface; 8. Insertion assembly; 801. Shaft; 802. Drive seat; 803. Second helical gear ring; 804. Conical head; 805. Guide ring; 9. Control host. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0040] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0041] For examples, please refer to Figure 1 - Figure 7 An oil well cement admixture mixing device includes a base 1, a lifting mechanism 2 is provided on one side of the base 1, and a support plate 3 is fixedly installed on the slide of the lifting mechanism 2. A drive motor 4 and multiple sets of mixing mechanisms 5 are provided on the support plate 3, and the drive motor 4 drives the multiple sets of mixing mechanisms 5 to rotate through a synchronization mechanism 6.

[0042] A positioning seat 101 is provided on the base 1, and multiple sets of mixing cylinders 102 are provided inside the positioning seat 101, with multiple sets of mixing cylinders 102 corresponding to multiple sets of stirring mechanisms 5.

[0043] In this invention, the lifting mechanism 2 consists of a housing and an electric slide table arranged longitudinally inside the housing. The housing has a strip-shaped slot to avoid the mounting and fixing end of the support plate 3. The support plate 3 is fixedly installed through the mounting and fixing end and the slide table on the electric slide table. Under the action of the electric slide table, the lifting mechanism 2 can be lifted up and down. Other lifting structures can also be used for the lifting mechanism 2, such as a motor driving a screw to rotate, so that the threaded sleeve moves up and down, etc., which will not be described in detail here.

[0044] The drive motor 4 is fixedly installed on the top of the support plate 3, and its output shaft extends through the support plate 3 to the bottom and is fixedly connected to the synchronization mechanism 6. The synchronization component drives multiple stirring mechanisms 5 to rotate.

[0045] Among them, the multiple stirring mechanisms 5 can be quickly disassembled, enabling the disassembly and cleaning of the stirrer after mixing.

[0046] Multiple mixing drums 102 and multiple mixing mechanisms 5 are arranged in a one-to-one correspondence. The lifting mechanism 2 drives the support plate 3 to move downward, allowing the mixing mechanism 5 to enter the mixing drum 102. This allows the oil well cement and the proportioned additives inside to be mixed and stirred, forming sample cement for subsequent testing. After mixing, the lifting mechanism 2 drives the support plate 3 to move upward, causing the mixing mechanism 5 to detach from the mixing drum. It is important to note that after the lifting mechanism 2 moves upward, the distance between the mixing mechanism 5 and the mixing drum 102 must be sufficient for the mixing drum 102 to be disassembled and removed. After the mixing drum 102 is disassembled and removed in sequence, different proportions of the mixed cement are tested to obtain the optimal cement additive ratio data.

[0047] The positioning seat 101 is a placement frame, which is provided with multiple placement holes for positioning the mixing cylinder 102, so that multiple sets of stirring mechanisms 5 can correspond to the mixing cylinder 102.

[0048] The synchronization mechanism 6 includes a main gear 601 fixedly connected to the output shaft of the drive motor 4, a support rod assembly 7 disposed on the support plate 3 and arranged in a ring array on the outer ring of the main gear 601, and a secondary gear 602 rotatably mounted on the support rod assembly 7 via bearings and meshing with the main gear 601.

[0049] The main gear 601 is coaxially arranged with the output shaft of the drive motor 4. The drive motor 4 drives the main gear 601 to rotate, which causes the main gear 601 to mesh with the secondary gear 602 of the outer ring array to rotate, thereby driving the stirring mechanism 5 installed on the support rod assembly 7 to rotate, thus realizing the synchronous stirring and mixing of multiple stirring mechanisms 5.

[0050] Furthermore, the stirring mechanism 5 and the support rod assembly 7 are quick-installation and quick-disassembly structures. The support rod assembly 7 and the support plate 3 are fixedly installed. When the stirring mechanism 5 is quickly installed, it is done by elastic snap-fit. After quick installation, the stirring mechanism 5 and the secondary gear 602 form a contact drive, which causes the secondary gear 602 to drive the stirring mechanism 5 to rotate.

[0051] The support plate 3 has a transmission hole 301 for the output shaft of the drive motor 4 to pass through, and the support plate 3 has a ring array of mounting holes 302 for mounting the support rod assembly 7.

[0052] The support rod assembly 7 includes a plug rod 701 adapted to the mounting hole 302, a retaining ring 702 disposed on the circumferential side wall of the plug rod 701, and a locking bolt 703 disposed on the top end of the plug rod 701.

[0053] The retaining ring 702 is located near the middle section of the circumferential side wall of the insert rod 701. The lower end of the insert rod 701 is used to fix and install the bearing, and then the secondary gear 602 is installed through the bearing. The upper end of the insert rod 701 is used to insert into the mounting hole 302 on the support plate 3. It should be noted that the top end of the insert rod 701 has a threaded hole, which is threaded to match the locking bolt 703. The threaded end of the insert rod 701 is inserted into the mounting hole 302 from below the support plate. The length of the insert rod 701 inserted into the mounting hole 302 needs to be less than the depth of the mounting hole 302. The locking bolt 703 is threaded from above the support plate 3 to the insert rod 701 inserted from below the support plate 3. By pulling the insert rod 701 upward with the locking bolt 703, and then clamping it with the retaining ring 702 and the locking bolt 703, the insert rod 701 is locked in place. Thus, the secondary gear 602 on the insert rod 701 is located below the support plate 3 and meshes with the main gear 601.

[0054] The bottom end of the insertion rod 701 is provided with an insertion hole 704, and the inner wall of the insertion hole 704 is provided with a spring cavity 705. A return spring 706 and a locking ball 707 are provided in the spring cavity 705.

[0055] The stirring mechanism 5 consists of a plug-in component 8 and a stirrer 501, and the plug-in component 8 is provided with a snap-fit ​​groove 502, which is snap-fitted and matched with the snap-fit ​​ball 707.

[0056] The plug-in component 8 and the plug-in hole 704 are plugged in and matched. After being plugged in, the return spring 706 pushes the snap-fit ​​ball 707 into the snap-fit ​​groove 502, so that the plug-in component 8 can be quickly installed inside the plug rod 701, thereby realizing the quick installation of the stirring mechanism 5. It should be noted that the snap-fit ​​groove 502 is an annular groove. Such a plug-in component 8 can be plugged in freely when it is quickly installed, without having to worry about the plug-in angle.

[0057] The bottom end of the auxiliary gear 602 is provided with a first helical tooth ring 603;

[0058] The insertion assembly 8 includes a shaft 801 that is matched and inserted into the insertion hole 704, a drive seat 802 disposed at the lower end of the shaft 801, and a second helical toothed ring 803 disposed on the drive seat 802.

[0059] The teeth between the first helical tooth ring 603 and the second helical tooth ring 803 are mated and meshed. Through the mating and meshing of their helical teeth, they can move closer to each other and mesh, and move further apart and not move, respectively, in both forward and reverse driving modes. It should be noted that the snap-fit ​​groove 502 is opened on the outer side wall of the circumference of the shaft 801. When the shaft 801 is inserted into the insertion hole 704, and the snap-fit ​​ball 707 and the snap-fit ​​groove 502 are engaged, the first helical tooth ring 603 and the second helical tooth ring 803 are in a meshing state, but not fully meshed. That is, they can move closer to each other to achieve full meshing by rotation.

[0060] To prevent the secondary gear 602 from driving the first helical gear to rotate, thereby causing the shaft 801 of the insertion assembly 8 located in the insertion hole 704 to also rotate, and thus causing wear between the shaft 801 and the insertion hole 704, the insertion rod 701 and the drive seat 802 are connected in a coaxial rotational manner. This ensures that when the secondary gear 602 drives the stirrer 501 at the bottom of the drive seat 802 to rotate through the meshing between the first helical gear ring 603 and the second helical gear ring 803, the shaft 801 does not rotate within the insertion hole 704, thus avoiding wear between the shaft 801 and the insertion hole 704.

[0061] Secondly, when the plug-in assembly is quickly connected to the plug-in hole 704, the quick-connect connection has the following problems:

[0062] 1. Although the plug-in component 8 and the plug-in hole 704 are matched and plugged in, because they are not zero-adhesion, the stirring mechanism 5 is wobbly after quick assembly and lacks the stability of bolt locking. To put it another way, even if it is a zero-adhesion design, after frequent use, wear will cause the stirring mechanism 5 to wobble after quick assembly.

[0063] 2. Due to the matching design, when plugging in the connector 8 and the connector 704, the experimenter needs to manually align them. When the connector 704 is facing down and the connector is matched, it is relatively difficult to align them.

[0064] Therefore, the following design was further proposed:

[0065] The top of the insertion hole 704 is provided with a guide surface 708;

[0066] The top end of the shaft 801 is provided with a tapered head 804, and the tapered angle of the tapered head 804 is smaller than the angle of the guide surface 708.

[0067] A guide ring 805 is provided at the lower end of the circumferential side wall of shaft 801.

[0068] Firstly, the design of the tapered head 804 makes it easier for the shaft 801 to be inserted into the insertion hole 704 during the insertion process.

[0069] When the snap-fit ​​ball 707 and the snap-fit ​​groove 502 are engaged, there is a certain gap between the top of the conical head 804 on the shaft 801 and the top of the insertion hole 704. This allows the conical head 804 of the shaft 801 to move upward and, under the guidance of the guide surface 708, to be axially positioned at its top. At the same time, when the snap-fit ​​ball 707 and the snap-fit ​​groove 502 are engaged, there is also a certain gap between the guide ring 805 and the insertion entrance of the insertion hole 704. This gap is the same as the gap between the top of the conical head 804 and the top of the insertion hole 704. After the shaft 801 moves upward a certain distance, under the action of the guide ring 805, the lower end of the shaft 801 can be axially positioned. Through the axial positioning at two points, the shaft 801 is stabilized, thereby preventing the stirrer 501 from shaking during stirring.

[0070] The specific operation is as follows: When the snap-fit ​​ball 707 and the snap-fit ​​groove 502 snap together, the first helical tooth ring 603 and the second helical tooth ring 803 are in a meshing state, but not completely meshed. They can still move closer together through rotation. Therefore, when the main gear 601 drives the secondary gear 602 to rotate and the stirrer 501 stirs, the first helical tooth ring 603 and the second helical tooth ring 803 move closer together through meshing rotation. During this further approaching operation, because the first helical tooth ring 603 is located at the bottom of the secondary gear 602, and the secondary gear 602 is rotatably mounted on the insert rod 7 via a bearing... Since the first helical toothed ring 603 cannot move downwards, under rotational drive, only the second helical toothed ring 803 can move the drive seat 802 upwards, thereby causing the shaft 801 on the drive seat 802 to move upwards. Through the cooperation of the conical head 804 and the guide surface 708, and the contact between the guide ring 805 and the insertion hole 704, the shaft 801 is axially positioned at both ends, thus fixing the shaft 801 and preventing the stirrer 501 from shaking. The stability of the stirrer 501 is achieved through the stirring action, resulting in a synergistic effect. The width of the snap-fit ​​groove 502 is greater than the snap-fit ​​area of ​​the snap-fit ​​ball 707.

[0071] The design of the relatively wide snap-fit ​​groove 502 ensures that when the shaft 801 moves upward during the stirring action, the snap-fit ​​ball 707 remains inside the snap-fit ​​groove 502. This prevents the snap-fit ​​ball 707 from being too tight, which could cause the shaft 801 to move upward and thus affect the axial positioning of the shaft 801.

[0072] It should be noted that during quick installation, the ball is inserted upwards. During insertion, the conical head 804 gradually pushes the retaining ball 707 to retract, making installation easy. However, during disassembly, the retaining ball 707 does not retract. If it is pulled downwards by force, it can easily deform the support plate 3, thus affecting the mixing of subsequent experiments. In this invention, through the structural characteristic of the rotational separation of the first helical toothed ring 603 and the second helical toothed ring 803, the stirrer 501 is rotated during disassembly, causing the first helical toothed ring 603 and the second helical toothed ring 803 to move away from each other, thereby pulling the shaft 801 downwards and causing the retaining ball 707 to disengage from the retaining groove 502. This avoids the situation where the support plate 3 is deformed due to forced downward disassembly. Furthermore, the rotational disassembly method converts the downward pulling force into torque, which is also more labor-saving. A protective plate 503 is provided on the drive seat 802, and the protective plate 503 is located below the second helical tooth ring 803. The protective plate 503 and the top of the mixing cylinder 102 are matched accordingly.

[0073] The protective plate 503 and the drive seat 802 are rotatably connected. The lifting mechanism 2 drives the support plate 3 to move down, so that when the agitator 501 is inserted into the mixing cylinder 102, the protective plate 503 can press the top of the mixing cylinder 102 tightly, so as to prevent the mixing cylinder 102 from rotating during mixing and also to prevent the slurry from splashing during mixing.

[0074] The lifting mechanism 2 is connected to the control host 9 via a wire on one side.

[0075] The control host 9 is electrically connected to the drive motor 4.

[0076] Working principle: Oil well cement and additives with different proportions are placed in multiple mixing cylinders 102. The mixing cylinders 102 are then placed in positioning seats 101. The mixing parameters are set by the control host 9, and the lifting mechanism 2 is moved downwards, causing the support plate 3 to move the agitator 501 downwards and insert it into the mixing cylinder 102. Simultaneously, the downward pressure of the lifting mechanism 2 fixes the mixing cylinder 102. At this time, the drive motor 4 starts, driving the main gear 601 to rotate, which in turn drives the multiple auxiliary gears 602 in the ring array to rotate. It should be noted that the direction of rotation causes the first helical gear ring 603 and the second helical gear ring 803 to approach each other. Therefore, during mixing, the multiple auxiliary gears 602 mesh with the first helical gear ring 603 and the second helical gear ring 803, driving the multiple drive seats 802 to rotate, thereby driving the multiple agitators 501 to rotate. This achieves simultaneous mixing of oil well cement and additives with different proportions. The meshing of the first helical gear ring 603 and the second helical gear ring 803... When they approach each other, the shaft 801 moves upward, causing the tapered head 804 at the top of the shaft 801 to be axially positioned by the guide surface 708. At the same time, the lower end of the shaft 801 is axially positioned by the guide ring 805 against the inlet of the insertion hole 704, thereby improving the stability of the agitator 501. By improving the stability of the agitator 501, the vibration of the equipment during mixing is reduced, and the vibration noise is significantly reduced. After mixing, the lifting mechanism 2 moves the agitator 501 upward by the support plate 3. At this time, samples of oil well cement and additives with different proportions are taken out for testing and data recording to determine the optimal mixing ratio. Finally, the agitator needs to be cleaned for the next experimental mixing. This is done by rotating the agitator 501 in the opposite direction of the mixing direction, causing the first helical tooth ring 603 and the second helical tooth ring 803 to move away from each other, thereby causing the retaining ball 707 to disengage from the retaining groove 502, and the agitator 501 can be removed for cleaning.

[0077] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil well cement admixture mixing device, characterized in that: Includes a base (1), a lifting mechanism (2) is provided on one side of the base (1), and a support plate (3) is fixedly installed on the slide of the lifting mechanism (2). A drive motor (4) and multiple stirring mechanisms (5) are provided on the support plate (3), and the drive motor (4) drives the multiple stirring mechanisms (5) to rotate through a synchronization mechanism (6). The base (1) is provided with a positioning seat (101), and the positioning seat (101) is provided with multiple sets of mixing cylinders (102), the multiple sets of mixing cylinders (102) correspond to multiple sets of stirring mechanisms (5); The synchronization mechanism (6) includes a main gear (601) fixedly connected to the output shaft of the drive motor (4), a support rod assembly (7) disposed on the support plate (3) and arranged in a ring array on the outer ring of the main gear (601), and a secondary gear (602) rotatably mounted on the support rod assembly (7) and meshing with the main gear (601) via a bearing. The support plate (3) has a transmission hole (301) through which the output shaft of the drive motor (4) passes, and the support plate (3) has mounting holes (302) arranged in a ring array for mounting the support rod assembly (7). The support rod assembly (7) includes a plug rod (701) adapted to the mounting hole (302), a retaining ring (702) disposed on the circumferential side wall of the plug rod (701), and a locking bolt (703) disposed on the top of the plug rod (701). The bottom end of the insertion rod (701) is provided with a insertion hole (704), and the inner wall of the insertion hole (704) is provided with a spring cavity (705). A return spring (706) and a locking ball (707) are provided in the spring cavity (705). The stirring mechanism (5) consists of a plug-in assembly (8) and a stirrer (501), and the plug-in assembly (8) is provided with a snap-fit ​​groove (502), which is snap-fitted and matched with the snap-fit ​​ball (707); The bottom end of the auxiliary gear (602) is provided with a first helical gear ring (603). The plug-in assembly (8) includes a shaft (801) that is matched and plugged into the plug-in hole (704), a drive seat (802) disposed at the lower end of the shaft (801), and a second helical toothed ring (803) disposed on the drive seat (802). The top of the insertion hole (704) is provided with a guide surface (708); The top end of the shaft (801) is provided with a tapered head (804), and the tapered angle of the tapered head (804) is smaller than the angle of the guide surface (708); A guide ring (805) is provided at the lower end of the circumferential sidewall of the shaft (801); The width of the snap-fit ​​groove (502) is greater than the snap-fit ​​area of ​​the snap-fit ​​ball (707).

2. The oil well cement admixture mixing equipment according to claim 1, characterized in that: A protective plate (503) is provided on the drive seat (802), and the protective plate (503) is located below the second helical tooth ring (803). The protective plate (503) and the top of the mixing cylinder (102) are matched accordingly.

3. The oil well cement admixture mixing equipment according to claim 2, characterized in that: The lifting mechanism (2) is connected to a control host (9) via a wire on one side.

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