A petroleum exploitation mud suspension vibration filtering and purifying device

Abstract

The application relates to the technical field of suspension separation, and discloses a petroleum exploitation mud suspension vibration filtering and purifying device, which comprises a vibrating screen shell, the inside of the vibrating screen shell is provided with two double-layer filter screens, the top of the vibrating screen shell is fixedly connected with a flow-converging liquid guide block, the inside of the flow-converging liquid guide block is rotationally connected with a driving impeller, an S-shaped rotating rod and two fan-shaped rotating rods, and the driving impeller and the bottom of the S-shaped rotating rod are jointly and transmissionally connected with a transmission belt; the device realizes self-transmission distribution of materials by relying on the falling impact force of the mud, can complete uniform spreading of the materials without additionally adding driving components, avoids local material accumulation and overload of the screening working surface, guarantees the stability and smoothness of the subsequent separation process, and through the middle sliding fit and the end close sealing layout, the device can adapt to the conventional elliptical vibration stroke of the equipment, forms flexible follow-up buffering, and effectively reduces the problems of edge grinding, loosening and tearing caused by the long-term reciprocating work of the screen.

Description

Technical Field

[0001] This invention relates to the field of suspension separation, specifically to a vibration filtration and purification device for oil extraction mud suspension. Background Technology

[0002] During oil extraction operations, a large amount of mud suspension containing solid impurities is generated. It needs to be separated into solid and liquid by vibrating screen equipment to achieve mud purification and resource recovery.

[0003] The feeding and spreading mechanisms of existing vibrating screens mostly require additional drive components to achieve material spreading. This not only increases equipment energy consumption and manufacturing costs, but also easily leads to problems such as concentrated feeding and material accumulation, causing local overload on the screening working surface, and subsequently causing malfunctions such as local blockage and uneven distribution. Secondly, in terms of screen installation, traditional vibrating screens mostly use rigid fixing methods for the screens, lacking a flexible buffer structure adapted to the elliptical vibration stroke of the equipment. During long-term reciprocating vibration, the screens are prone to damage such as edge wear, loosening, or even tearing, resulting in decreased separation accuracy and frequent replacement of screen consumables. At the same time, the gap between the screen and the fixed frame is prone to leakage of suspended liquid, causing material waste and environmental pollution.

[0004] For vibrating screens that operate continuously for a long time, the permeability of the front screen surface will gradually decrease due to the continuous accumulation of solid impurities in the slurry. This causes some slurry suspension to fail to pass through the screen in time and then shift and overflow. These overflowing materials often have incomplete separation due to insufficient separation stroke, which reduces the overall purification effect. At the same time, the existing reflux structure lacks effective impurity interception and uniform flow guidance design, which easily leads to the accumulation and blockage of the flow channel, affecting the secondary treatment effect of the refluxed material.

[0005] In addition, the existing vibrating screens mostly use cumbersome fastening methods for their excitation components. During long-term unidirectional rotational vibration, loosening, misalignment, and abnormal wear are likely to occur, resulting in unstable excitation output and affecting the screening rhythm and separation effect. Moreover, the maintenance, replacement, and operation adjustment of the excitation components require disassembling the main shaft and internal supporting components, which is complicated, time-consuming, and labor-intensive, making it difficult to meet the rapid maintenance needs of complex field conditions in oil extraction.

[0006] Therefore, there is a need to provide a vibration filtration and purification device for oil extraction mud suspension, which aims to solve the above problems. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a vibration filtration and purification device for oil extraction mud suspension.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a vibration filtration and purification device for oil extraction mud suspension, comprising a vibrating screen shell, wherein two double-layer filter screens are arranged inside the vibrating screen shell, and a flow-concentrating liquid guiding block is fixedly connected to the top of the vibrating screen shell;

[0009] The internal structure of the liquid-guiding block is rotatably connected to a drive impeller, an S-shaped rotating rod, and two fan-shaped rotating rods. The bottom of the drive impeller and the S-shaped rotating rod are connected to a transmission belt. The S-shaped rotating rod is symmetrically rotatably connected to a connecting rod. The ends of the two connecting rods away from the S-shaped rotating rod are respectively rotatably connected to the two fan-shaped rotating rods.

[0010] A lower screen fixing frame is fixedly connected to the inner wall of the vibrating screen housing. An upper screen fixing frame is snapped into the top of the lower screen fixing frame. A liquid collection cover and a forward-inclined guide channel are fixedly connected to the bottom of the lower screen fixing frame. The forward-inclined guide channel is connected to the bottom of the liquid collection cover.

[0011] The vibrating screen housing is equipped with a drive shaft inside, and an arc-shaped block is fixedly connected to the outer wall of the drive shaft. An eccentric block is also engaged with the outer wall of the drive shaft.

[0012] Preferably, a comb plate is fixedly connected to the top of each of the two fan-shaped rotating rods. The comb plate swings synchronously with the fan-shaped rotating rods to achieve uniform distribution of the mud suspension on the surface of the double-layer filter screen.

[0013] Preferably, a T-shaped sliding frame is slidably connected between the lower screen fixing frame and the upper screen fixing frame, and the upper screen fixing frame and the lower screen fixing frame are connected by a snap-fit, which facilitates quick disassembly and realizes the replacement and maintenance of the double-layer filter screen. Several sets of return springs are fixedly connected between the lower screen fixing frame and the upper screen fixing frame in a rectangular distribution.

[0014] Preferably, the ends of several reset spring assemblies away from the lower screen fixing frame and the upper screen fixing frame are all fixedly connected to the T-shaped slide frame, and the side of the T-shaped slide frame away from the reset spring assembly is fixedly connected to the middle of the double-layer filter screen.

[0015] Preferably, the liquid collection cover plate covers the lower part of the double-layer filter screen and is used to collect the slurry leaked from the lower part of the double-layer filter screen. The lower screen fixing frame, the upper screen fixing frame, the T-shaped sliding frame, the reset spring group and the double-layer filter screen are symmetrically arranged in two sets to realize the double-layer vibrating screening operation.

[0016] Preferably, a detachable filter screen is inserted into the forward-tilted flow channel, and a flow guide strip is provided at the end of the forward-tilted flow channel away from the liquid collection cover plate.

[0017] Preferably, the guide strips are arranged horizontally and evenly to evenly spread the mud in the forward-inclined guide channel to the front end of the double-layer filter screen.

[0018] Preferably, an L-shaped arc groove is provided on the inner wall of the eccentric block, and the eccentric block is slidably connected to the drive shaft and the arc block through the L-shaped arc groove, so as to realize the quick assembly and disassembly and circumferential positioning of the eccentric block.

[0019] Preferably, the arc-shaped block fits tightly against the inner wall of the L-shaped arc groove to prevent the eccentric block from radially shifting during the rotation of the drive shaft.

[0020] Preferably, the drive impeller is located below the feed inlet of the liquid-guiding block. When the mud suspension falls, it impacts the drive impeller, causing the drive impeller to rotate autonomously without the need for an additional power source.

[0021] The present invention provides a vibration filtration and purification device for oil extraction mud suspension. Compared with the prior art, the advantages of the present invention are as follows:

[0022] By relying on the impact force of the falling mud to achieve autonomous material distribution, uniform material spreading can be achieved without the need for additional drive components. This avoids localized material accumulation and overloading on the screening working surface, ensuring uniform overall spreading of the suspended material to be processed, guaranteeing a stable and smooth subsequent separation process, reducing common faults such as localized material blockage and uneven flow, and improving the overall material guidance and pretreatment effect.

[0023] The combination of a central sliding joint and an end-fitting sealing layout not only adapts to the conventional elliptical vibration stroke of the equipment, forming a flexible, follow-up buffer, but also effectively reduces the problems of edge rubbing, loosening, and tearing caused by long-term reciprocating operation of the screen. At the same time, the end-fitting structure can seal the joint gaps to prevent leakage of the suspension. The dual-set symmetrical screening layout also improves the continuous operation processing capacity, adapting to the long-term stable processing requirements of large-volume suspended materials.

[0024] After prolonged continuous operation, conventional vibrating screens are prone to reduced front-end permeability and material overflow, resulting in incomplete separation of some materials. This structure can automatically collect overflowing material from the rear end and guide it back to the front working surface to participate in the separation operation again, compensating for the insufficient material travel at the rear end. Combined with internal impurity interception and end-end even flow guidance design, it can not only prevent channel accumulation and blockage, but also allow the returned material to be processed in conjunction with the original feed, further improving the overall material purification and stratification.

[0025] Automatic fitting and locking are achieved through the inertia generated by unidirectional rotation, making it less prone to loosening, misalignment, and abnormal wear during operation, and maintaining stable excitation output throughout the process; after stopping, related parts can be directly slid and disassembled without disassembling the spindle and internal components, greatly simplifying the on-site maintenance, parts replacement and working condition adjustment process, and adapting to the rapid maintenance needs of complex field working conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the overall positional relationship of the device in this invention;

[0027] Figure 2 This is a cross-sectional view of the overall device in this invention;

[0028] Figure 3 This is a schematic diagram showing the positional relationship between the vibrating screen shell, the liquid-guiding block, and the drive impeller in this invention;

[0029] Figure 4 This is a schematic diagram showing the positional relationship between the S-shaped rotating rod, the sector-shaped rotating rod, and the connecting rod in this invention;

[0030] Figure 5 This is a schematic diagram showing the positional relationship between the lower screen fixing frame, the upper screen fixing frame, and the double-layer filter screen in this invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the middle;

[0032] Figure 7 This is a schematic diagram showing the positional relationship between the vibrating screen shell, the liquid collection cover, and the forward-inclined guide channel in this invention.

[0033] Figure 8 This is a schematic diagram showing the positional relationship between the forward-tilted flow guide channel, the detachable filter screen, and the flow guide strip in this invention;

[0034] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point B in the middle;

[0035] Figure 10 This is a schematic diagram showing the positional relationship between the drive shaft and the arc-shaped block in this invention;

[0036] Figure 11 This is a schematic diagram showing the positional relationship between the eccentric block and the L-shaped arc groove in this invention.

[0037] Figure label:

[0038] 11. Vibrating screen housing; 12. Liquid converging block; 13. Drive impeller; 14. S-shaped rotating rod; 15. Transmission belt; 16. Fan-shaped rotating rod; 17. Connecting rod; 18. Comb plate; 19. Lower screen fixing frame; 20. Upper screen fixing frame; 21. T-shaped sliding frame; 22. Return spring assembly; 23. Double-layer filter screen; 24. Liquid collection cover plate; 25. Forward-inclined flow guide channel; 26. Detachable filter screen; 27. Flow guide strip; 28. Drive shaft; 29. ​​Arc-shaped block; 30. Eccentric block; 31. L-shaped arc groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0040] In the description of this invention, the terms “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0042] Implementation, for example Figures 1 to 6 As shown, this is a vibration filtration and purification device for oil extraction mud suspension provided by the present invention. This embodiment is suitable for the screening and separation of suspended materials. The whole mainly includes a vibrating screen shell 11, a flow guiding block 12, a fluid self-driving uniform distribution component, a screen positioning buffer component, a reflux collection guiding component, and an inertial locking excitation component.

[0043] Two sets of double-layer filter screens 23 are installed inside the vibrating screen housing 11. A flow-gathering and liquid-guiding block 12 is fixedly connected to the top of the vibrating screen housing 11. Inside the cavity of the flow-gathering and liquid-guiding block 12, a drive impeller 13, an S-shaped rotating rod 14, and two sets of fan-shaped rotating rods 16 are rotatably mounted. The lower ends of the drive impeller 13 and the S-shaped rotating rod 14 are linked by a transmission belt 15. Connecting rods 17 are symmetrically rotatably connected to both sides of the S-shaped rotating rod 14. The ends of the connecting rods 17 away from the S-shaped rotating rod 14 are respectively rotatably connected to the sides of the two sets of fan-shaped rotating rods 16. A comb plate 18 is fixedly installed at the upper end of each of the two sets of fan-shaped rotating rods 16, which can swing synchronously with the fan-shaped rotating rods 16 to achieve uniform spreading and distribution of the falling mud suspension on the surface of the double-layer filter screen 23.

[0044] A lower screen fixing frame 19 is fixedly installed on the inner wall of the vibrating screen housing 11. The top of the lower screen fixing frame 19 is snapped together with the upper screen fixing frame 20 using a snap-fit ​​structure, making it easy to disassemble and assemble, and facilitating the replacement and maintenance of the double-layer filter screen 23 later. A T-shaped sliding frame 21 is slidably assembled between the middle of the frames of the lower screen fixing frame 19 and the upper screen fixing frame 20. Multiple sets of return spring assemblies 22 are also fixedly installed between them in a rectangular arrangement. The end of each return spring assembly 22 away from the lower screen fixing frame 19 and the upper screen fixing frame 20 is fixedly connected to the T-shaped sliding frame 21. On frame 21, the outer side of the T-shaped sliding frame 21 is fixedly connected to the middle position of the double-layer filter screen 23; the two ends of the double-layer filter screen 23 are attached to the outer walls of the lower screen fixing frame 19 and the upper screen fixing frame 20, which can not only retain the space for the filter screen to move, but also form an end face seal to prevent the suspension from leaking from the joint gap; the lower screen fixing frame 19, the upper screen fixing frame 20, the T-shaped sliding frame 21, the reset spring group 22 and the double-layer filter screen 23 are symmetrically arranged in two sets to form a dual-channel screening structure, which effectively improves the material processing throughput and the classification and separation effect.

[0045] like Figures 7 to 9 As shown, a liquid collection cover plate 24 and a forward-inclined guide channel 25 are fixedly installed at the bottom of the lower screen fixing frame 19. The bottom cavity of the forward-inclined guide channel 25 and the liquid collection cover plate 24 are interconnected. The liquid collection cover plate 24 is fitted and covered in the area below the rear section of the double-layer filter screen 23, which can collect the overflow slurry generated during the screening process. A detachable filter screen 26 is inserted and installed inside the channel of the forward-inclined guide channel 25, which can intercept large solid impurities mixed in the return slurry and prevent the channel from being blocked. Multiple guide strips 27 are evenly distributed at the discharge end of the forward-inclined guide channel 25 away from the liquid collection cover plate 24. The guide strips 27 are arranged in a horizontal parallel manner, which can distribute and guide the return slurry again, and evenly spread it to the front working surface of the double-layer filter screen 23 to participate in the screening and separation again.

[0046] like Figure 10 and Figure 11As shown, a drive shaft 28 is horizontally mounted inside the vibrating screen housing 11. An arc-shaped block 29 is circumferentially fixed to the outer wall of the drive shaft 28. An eccentric block 30 is fitted onto the outer side of the drive shaft 28. An L-shaped arc groove 31 is formed on the inner wall of the eccentric block 30. The eccentric block 30 slides and adapts to the drive shaft 28 and the outer side of the arc-shaped block 29 through the L-shaped arc groove 31, achieving rapid positioning and disassembly / removal of the eccentric block 30, ensuring assembly stability. The outer wall of the arc-shaped block 29 and the inner wall of the L-shaped arc groove 31 are tightly fitted, effectively preventing radial displacement of the eccentric block 30 during rotation. The impeller 13 is located directly below the feed inlet of the liquid-guiding block 12. The slurry suspension can drive the impeller 13 to rotate autonomously by the impact force of falling liquid, without the need for additional power drive components. The drive shaft 28 adopts a unidirectional rotation working mode. When running, the arc-shaped block 29 on the outside of the shaft fits into the L-shaped arc groove 31. The centrifugal inertia generated by the rotation realizes the automatic locking of the eccentric block 30 to prevent loosening. It is not easy to loosen or wear during long-term operation. After the equipment is stopped and the inertial force is removed, the eccentric block 30 can be directly slid along the L-shaped arc groove 31 to remove it, which greatly simplifies the daily maintenance and parts replacement process.

[0047] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments:

[0048] Self-driven feeding and uniform distribution process:

[0049] The liquid-concentrating block 12 is installed on the top of the vibrating screen housing 11, serving as the feed and collection port for the mud suspension. The mud suspension directly impacts the drive impeller 13 installed on the liquid-concentrating block 12, and the drive impeller 13 rotates autonomously by the gravity of the fluid falling and the impact kinetic energy, without the need for external power.

[0050] The drive impeller 13 synchronously transmits rotational power to the S-shaped rotating rod 14 via the transmission belt 15. During the rotation of the S-shaped rotating rod 14, the connecting rods 17 on both sides rotate symmetrically and synchronously pull the two sets of fan-shaped rotating rods 16 to form a regular reciprocating swing motion. The comb plate 18 fixed at the top of the fan-shaped rotating rod 16 moves synchronously with the swing, spreading the concentrated falling mixture evenly to the front working surface of the double-layer filter screen 23, avoiding local material accumulation and uneven flow, ensuring uniform material reception across the entire screen surface, and providing a uniform material distribution foundation for subsequent fine solid-liquid separation.

[0051] By relying on the impact force of the falling mud to drive the impeller 13 within the flow-guiding block 12, autonomous material distribution is achieved. No additional drive components are needed; the material is evenly spread on the double-layer filter screen 23 through the cooperation of the S-shaped rotating rod 14, transmission belt 15, connecting rod 17, fan-shaped rotating rod 16, and comb plate 18. This avoids localized material accumulation and overload on the working surface of the double-layer filter screen 23, ensuring uniform overall spreading of the suspended material, guaranteeing a stable and smooth subsequent separation process, reducing common problems such as localized blockage and uneven flow, and improving the overall material guidance and pretreatment effect.

[0052] Screening bearing limit steps:

[0053] During the suspension separation step, the vibrating screen housing 11 follows the power component to form a conventional elliptical vibration trajectory; the double-layer filter screen 23 is slidably assembled in the middle position of the lower screen fixing frame 19 and the upper screen fixing frame 20 through the T-shaped sliding frame 21. The two ends of the double-layer filter screen 23 abut against the end faces of the lower screen fixing frame 19 and the upper screen fixing frame 20, which not only forms a seal to prevent suspension leakage, but also retains a small sliding gap to adapt to vibration displacement; together with the reset spring assembly 22, a flexible buffer is formed to adapt to the conventional vibration stroke of the screening equipment, avoiding the problems of filter screen edge wear, loosening, and tearing caused by traditional rigid fastening, continuously maintaining the filter screen tension, stabilizing the separation accuracy, and extending the service life of consumables; the double-layer filter screen 23 is arranged in layers, which can simultaneously improve the grading separation effect and screening throughput.

[0054] The lower screen fixing frame 19, the upper screen fixing frame 20, the T-shaped sliding frame 21, the reset spring assembly 22, and the double-layer filter screen 23 are symmetrically arranged in two sets to meet the requirements of continuous separation of mixed materials.

[0055] The T-shaped sliding frame 21 slides between the lower screen fixing frame 19 and the upper screen fixing frame 20, and the two ends of the double-layer filter screen 23 are fitted and sealed to the ends of the lower screen fixing frame 19 and the upper screen fixing frame 20. This not only adapts to the conventional elliptical vibration stroke of the vibrating screen shell 11, but also forms a flexible follow-up buffer with the return spring assembly 22, effectively reducing the problems of edge wear, loosening and tearing caused by long-term reciprocating operation of the double-layer filter screen 23; at the same time, the end fitting structure can seal the fitting gaps to prevent leakage of suspension. The symmetrical arrangement of the lower screen fixing frame 19, upper screen fixing frame 20, T-shaped sliding frame 21, return spring assembly 22 and double-layer filter screen 23 in two sets can also improve the continuous operation processing capacity and adapt to the long-term stable processing requirements of large flow of suspended materials.

[0056] Post-overflow collection steps:

[0057] The liquid collection cover plate 24 is fixed to the bottom of the lower screen fixing frame 19 and partially covers the area below the rear end of the double-layer filter screen 23. It is specifically used to collect the overflow slurry that has shifted backward due to the decrease in the permeability of the front screen surface during long-term continuous operation of the equipment.

[0058] After being collected, the offset slurry flows forward through the liquid collection cover plate 24 and then to the front working area of ​​the double-layer filter screen 23 below, making up for the deficiency of insufficient material separation stroke at the rear end and realizing the recovery and reuse of overflow.

[0059] The forward-inclined guide channel 25 has a detachable filter screen 26 inserted inside, which can intercept and block large solid impurities in the return slurry for a second time, avoiding channel blockage and affecting the smoothness of the guide. The discharge end of the forward-inclined guide channel 25 is equipped with horizontally evenly distributed guide strips 27, which spread the return slurry evenly to the front end of the filter screen again, and participate in the layered screening at the same time as the original feed, thereby enhancing the secondary separation effect.

[0060] After prolonged continuous operation, conventional vibrating screens are prone to a decrease in the permeability of the front end of the double-layer filter screen 23, resulting in material overflow and incomplete separation of some materials. This structure automatically collects the overflowing material from the rear end through the liquid collection hood 24, and guides it back to the front working surface of the double-layer filter screen 23 via the forward-inclined guide channel 25 to participate in the separation operation again, compensating for the insufficient material travel at the rear end. The forward-inclined guide channel 25 is equipped with a detachable filter screen 26 to intercept impurities, and the discharge end is equipped with guide strips 27 to achieve even flow distribution. This not only prevents the forward-inclined guide channel 25 from accumulating and clogging, but also allows the returned material to be processed in conjunction with the original feed, further improving the overall material purification and stratification.

[0061] Inertial self-locking quick disassembly and assembly steps:

[0062] The drive shaft 28 is arranged inside the vibrating screen housing 11 to provide rotational power for the screening vibration of the whole machine. An arc-shaped block 29 is fixed on the outer wall of the shaft. The eccentric block 30 is slidably fitted to the drive shaft 28 and the outer side of the arc-shaped block 29 by means of the L-shaped arc groove 31 opened on the inner side.

[0063] When the equipment is running normally in one direction, the drive shaft 28 drives the arc block 29 to rotate synchronously. The arc block 29 fits into the wall of the L-shaped arc groove 31. Relying on the centrifugal inertial force generated by the rotation, the eccentric block 30 and the drive shaft 28 form an automatic clamping and self-locking state. During operation, it is not easy to loosen, misalign or abnormally wear. It continuously outputs a stable excitation force to ensure the screening work.

[0064] When it is necessary to adjust the vibration amplitude or replace parts, after stopping the machine to eliminate rotational inertia, the eccentric block 30 can be directly slid along the L-shaped arc groove 31 to remove it without disassembling the spindle and sealing components, simplifying the on-site maintenance and parts replacement process.

[0065] The inertia generated by the unidirectional rotation of the drive shaft 28 enables the arc block 29 and the L-shaped arc groove 31 of the eccentric block 30 to automatically fit and lock together. During operation, the eccentric block 30 is not easy to loosen, misalign or abnormally wear, and maintains stable excitation output throughout the process. After stopping, the eccentric block 30 can be directly slid along the L-shaped arc groove 31 to remove it without disassembling the drive shaft 28 and internal components, which greatly simplifies the on-site maintenance, parts replacement and working condition adjustment process, and adapts to the rapid maintenance needs of complex field working conditions.

[0066] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibration filtration and purification device for oil extraction mud suspension, comprising a vibrating screen shell (11), characterized in that, The vibrating screen housing (11) is provided with two double-layer filter screens (23) inside, and a liquid-guiding block (12) is fixedly connected to the top of the vibrating screen housing (11). The internal structure of the liquid-guiding block (12) is rotatably connected to a drive impeller (13), an S-shaped rotating rod (14), and two fan-shaped rotating rods (16). The bottom of the drive impeller (13) and the S-shaped rotating rod (14) are connected to a transmission belt (15). The S-shaped rotating rod (14) is symmetrically rotatably connected to a connecting rod (17). The ends of the two connecting rods (17) away from the S-shaped rotating rod (14) are respectively rotatably connected to the two fan-shaped rotating rods (16). A lower screen fixing frame (19) is fixedly connected to the inner wall of the vibrating screen housing (11). An upper screen fixing frame (20) is snapped onto the top of the lower screen fixing frame (19). A liquid collection cover plate (24) and a forward-inclined guide channel (25) are fixedly connected to the bottom of the lower screen fixing frame (19). The forward-inclined guide channel (25) is connected to the bottom of the liquid collection cover plate (24). The vibrating screen housing (11) is provided with a drive shaft (28) inside, and an arc-shaped block (29) is fixedly connected to the outer wall of the drive shaft (28). An eccentric block (30) is snapped into the outer wall of the drive shaft (28).

2. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, The tops of the two fan-shaped rotating rods (16) are fixedly connected with comb plates (18), and the comb plates (18) swing synchronously with the fan-shaped rotating rods (16) to achieve uniform distribution of mud suspension on the surface of the double-layer filter screen (23).

3. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, A T-shaped sliding frame (21) is slidably connected between the lower screen fixing frame (19) and the upper screen fixing frame (20). The upper screen fixing frame (20) and the lower screen fixing frame (19) are connected by a snap-fit, which facilitates quick disassembly and enables the replacement and maintenance of the double-layer filter screen (23). Several reset spring groups (22) are fixedly connected between the lower screen fixing frame (19) and the upper screen fixing frame (20) in a rectangular distribution.

4. The vibration filtration and purification device for oil extraction mud suspension according to claim 3, characterized in that, Several of the reset spring assemblies (22) are fixedly connected to the T-shaped slide frame (21) at one end away from the lower screen fixing frame (19) and the upper screen fixing frame (20). The side of the T-shaped slide frame (21) away from the reset spring assembly (22) is fixedly connected to the middle of the double-layer filter screen (23).

5. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, The liquid collection cover (24) covers the lower part of the double-layer filter screen (23) and is used to collect the slurry leaked from the lower part of the double-layer filter screen (23). The lower screen fixing frame (19), the upper screen fixing frame (20), the T-shaped sliding frame (21), the reset spring group (22) and the double-layer filter screen (23) are symmetrically arranged in two sets to realize the double-layer vibrating screening operation.

6. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, A detachable filter screen (26) is inserted into the forward-inclined flow channel (25), and a flow guide strip (27) is provided at the end of the forward-inclined flow channel (25) away from the liquid collection cover plate (24).

7. The vibration filtration and purification device for oil extraction mud suspension according to claim 6, characterized in that, The guide strips (27) are arranged horizontally and evenly to spread the mud in the forward-inclined guide channel (25) evenly to the front end of the double-layer filter screen (23).

8. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, The inner wall of the eccentric block (30) is provided with an L-shaped arc groove (31). The eccentric block (30) is slidably connected to the drive shaft (28) and the arc block (29) through the L-shaped arc groove (31), so as to realize the quick assembly and disassembly and circumferential positioning of the eccentric block (30).

9. The vibration filtration and purification device for oil extraction mud suspension according to claim 8, characterized in that, The arc-shaped block (29) fits tightly against the inner wall of the L-shaped arc groove (31) to prevent the eccentric block (30) from radially shifting during the rotation of the drive shaft (28).

10. The vibration filtration and purification device for oil extraction mud suspension according to claim 1, characterized in that, The drive impeller (13) is located below the feed inlet of the liquid-concentrating block (12). When the mud suspension falls, it impacts the drive impeller (13), causing the drive impeller (13) to rotate autonomously without the need for an additional power source.

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