A vibrating screen screen frame for drilling fluid

Abstract

The utility model discloses a vibrating screen screen frame for drilling fluid relates to petroleum drilling solid control equipment technical field, including the steel frame, its top is equipped with the installation steel bar along the circumference, transverse rubber block, symmetrically set up in the front and back two sides of steel frame, longitudinal rubber block, symmetrically set up in the left and right sides of steel frame, and the both ends of longitudinal rubber block are flush with the end portion of transverse rubber block and link up, wherein, transverse rubber block and longitudinal rubber block all include hard rubber base block and the soft rubber sealing strip of embedding in the top of hard rubber base block, and the bottom of hard rubber base block is equipped with the clamping groove that cooperates with the installation steel bar. The vibrating screen screen frame for drilling fluid, the technical problem of high processing difficulty of existing vibrating screen screen frame is solved.

Description

Technical Field

[0001] This utility model relates to the field of solids control equipment for oil drilling, and in particular to a vibrating screen frame for drilling fluid. Background Technology

[0002] In oil and gas drilling operations, drilling fluid (also known as mud) serves as a circulating medium, responsible for cooling the drill bit and carrying cuttings. To ensure the stability of drilling fluid performance and enable its reuse, harmful solid particles must be effectively removed through a solids control system. As the first-stage processing equipment in the solids control process, the performance of the vibrating screen is crucial.

[0003] A vibrating screen mainly consists of a screen box, a vibrating motor, a screen mesh, and a screen frame. The screen frame supports and fixes the screen mesh and maintains structural stability under high-frequency vibration. In existing technology, to ensure a tight fit between the screen mesh and the screen frame and prevent drilling fluid leakage from gaps, the upper surface of the screen frame is typically designed as an arc shape, higher in the middle and lower on both sides. To achieve this curved surface, some manufacturers use integral stamping or machining to directly form the steel frame into an arc surface. However, this processing method is complex, difficult to control in terms of precision, and has low material utilization, leading to a significant increase in manufacturing costs. Especially in the application of large screen frames, the problem of welding deformation on the curved surface is prominent, further affecting assembly quality.

[0004] Therefore, how to provide a vibrating screen frame with a reasonable structure and simple processing is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a vibrating screen frame for drilling fluid, which effectively solves the technical problem of high processing difficulty of existing vibrating screen frames.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vibrating screen frame for drilling fluid, comprising:

[0008] A steel frame with mounting steel bars along its perimeter at the top;

[0009] Lateral rubber blocks are symmetrically arranged on the upper surfaces of the front and rear sides of the steel frame;

[0010] Longitudinal rubber blocks are symmetrically arranged on the upper surfaces of the left and right sides of the steel frame, with both ends of the longitudinal rubber blocks flush with the ends of the transverse rubber blocks.

[0011] The transverse rubber block and the longitudinal rubber block both include a hard rubber base block and a soft rubber sealing strip embedded in the top of the hard rubber base block. The bottom of the hard rubber base block is provided with a groove that cooperates with the mounting steel strip.

[0012] Preferably, the upper surface of the transverse rubber block is an arc-shaped support surface that is high in the middle and low on both sides.

[0013] Preferably, the upper surface of the longitudinal rubber block is a plane, and the height of the longitudinal rubber block is consistent with the end height of the arc-shaped support surface.

[0014] Preferably, the mounting steel bar has a rectangular cross-section, and the mounting steel bar is continuously welded and fixed along the top periphery of the steel frame.

[0015] Preferably, the transverse rubber block and the longitudinal rubber block together enclose a closed annular support surface.

[0016] Preferably, the connection between the hard rubber base block and the soft rubber sealing strip is by adhesive bonding or vulcanization.

[0017] Preferably, the cross-section of the soft rubber sealing strip is circular.

[0018] Preferably, it further includes a guide plate, which is fixed to the inner side of the steel frame and aligned with the center line of the arc-shaped support surface.

[0019] Preferably, the top of the guide plate has rounded corners.

[0020] Preferably, the steel frame is constructed by welding steel sections or steel plates.

[0021] Compared with the above-mentioned background technology, the vibrating screen frame for drilling fluid provided by this utility model has the following beneficial effects:

[0022] The steel frame adopts a planar structure design, eliminating the need for curved surface stamping, which simplifies the manufacturing process, improves material utilization, and effectively reduces production costs, making it suitable for mass production of large screen frames.

[0023] By embedding a soft rubber sealing strip on top of a hard rubber base block, the hard rubber base block provides sufficient support rigidity to avoid energy loss and vibration reduction problems under high-frequency vibration; the soft rubber sealing strip undergoes elastic deformation under the screen compression state, adaptively filling the micro gap between the screen and the screen frame to achieve circumferential full sealing and solve the drilling fluid leakage problem.

[0024] The horizontal and vertical rubber blocks are fixed by fitting and mounting steel strips through bottom slots. The structure is simple, the connection is reliable, and it supports quick assembly and disassembly. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the steel frame structure provided in an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of the screen frame structure for a drilling fluid vibrating screen provided in this embodiment of the present invention;

[0028] Figure 3 for Figure 2 A sectional view.

[0029] 1-Steel frame, 2-Installation steel strip, 3-Transverse rubber block, 4-Vertical rubber block, 5-Hard rubber base block, 6-Soft rubber sealing strip, 7-Guide plate. Detailed Implementation

[0030] 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.

[0031] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1-3 The present application provides a vibrating screen frame for drilling fluid, comprising a steel frame 1 with mounting steel bars 2 along its periphery at the top; transverse rubber blocks 3 symmetrically arranged on the upper surfaces of the front and rear sides of the steel frame 1; and longitudinal rubber blocks 4 symmetrically arranged on the upper surfaces of the left and right sides of the steel frame 1, with the ends of the longitudinal rubber blocks 4 flush with the ends of the transverse rubber blocks 3; wherein, both the transverse rubber blocks 3 and the longitudinal rubber blocks 4 include a hard rubber base block 5 and a soft rubber sealing strip 6 embedded in the top of the hard rubber base block 5, and the bottom of the hard rubber base block 5 is provided with a groove that cooperates with the mounting steel bars 2.

[0033] Specifically, the steel frame 1 is constructed by welding steel sections or steel plates and serves as the main support structure for the screen frame; a mounting steel strip 2 is fixedly installed on its top along the perimeter for positioning and fixing the rubber components.

[0034] Horizontal rubber blocks 3 are symmetrically arranged on the upper surfaces of the front and rear sides of the steel frame 1, with their upper surfaces being arc-shaped support surfaces that are higher in the middle and lower on both sides. Longitudinal rubber blocks 4 are symmetrically arranged on the upper surfaces of the left and right sides of the steel frame 1, with their upper surfaces being flat, and their two ends having the same height as the two ends of the arc-shaped support surfaces of the horizontal rubber blocks 3, achieving a smooth and seamless connection. Both the horizontal rubber blocks 3 and the longitudinal rubber blocks 4 include a hard rubber base block 5 and a soft rubber sealing strip 6 embedded in the top of the hard rubber base block 5. The bottom of the hard rubber base block 5 has a groove that cooperates with the mounting steel strip 2. Through the engagement of the groove with the mounting steel strip 2, the rubber blocks can be detachably fixed on the steel frame 1. The hard rubber base block 5 provides structural support and avoids excessive deformation or vibration reduction under high-frequency vibration, while the soft rubber sealing strip 6 undergoes elastic compression under the screen compression state, filling the tiny gaps between the screen and the screen frame, thereby achieving a reliable seal and preventing drilling fluid leakage.

[0035] This application provides a vibrating screen frame for drilling fluid. During screen installation, the operator places the screen frame from above, aligning it with the screen. The edges of the screen gradually adhere to the arc-shaped support surface of the transverse rubber block 3 and the flat support surface of the longitudinal rubber block 4. The screen is then pressed onto the screen frame by wedges, pressure plates, or other clamping mechanisms. At this time, the soft rubber sealing strip 6 undergoes elastic deformation under pressure, tightly filling the gap between the bottom of the screen and the rubber blocks. Meanwhile, the hard rubber base block 5, due to its high rigidity, effectively transmits vibration energy, avoiding vibration reduction or energy loss caused by excessively soft rubber. The transverse and longitudinal rubber blocks together form a continuous support and sealing surface with a raised center and gently transitioning edges, ensuring reliable sealing around the entire screen perimeter.

[0036] In summary, the steel frame provided in this application adopts a planar structure design, eliminating the need for curved surface stamping, simplifying the manufacturing process, improving material utilization, and effectively reducing production costs. It is suitable for mass production of large screen frames. By embedding a soft rubber sealing strip on the top of the hard rubber base block, the hard rubber base block provides sufficient support rigidity, avoiding energy loss and vibration reduction problems under high-frequency vibration. The soft rubber sealing strip undergoes elastic deformation under the screen mesh compression state, adaptively filling the microscopic gap between the screen mesh and the screen frame to achieve circumferential full sealing and solve the drilling fluid leakage problem. The transverse rubber blocks and longitudinal rubber blocks are fixed to the mounting steel strips through bottom grooves. The structure is simple, the connection is reliable, and it supports quick disassembly and assembly. When the rubber parts wear or age due to long-term use, it is not necessary to disassemble the entire screen frame. Maintenance can be completed simply by removing the old parts and inserting the new parts, which greatly shortens downtime.

[0037] Furthermore, the screen mesh is pressed and fixed to the screen frame by wedges, pressure plates, or other conventional clamping mechanisms, which is a well-known technical method in the field of vibrating screens. The core innovation of this application lies in the structural design of the screen frame itself, rather than the specific form of the clamping mechanism. Therefore, the structural details, installation methods, and working principles of the wedges, pressure plates, or other clamping mechanisms will not be elaborated in this application, nor will they constitute a limitation on the scope of protection of this utility model.

[0038] Based on the above embodiments, see Figure 3 The cross-section of the installation steel strip 2 is rectangular, which is strong and easy to process and weld. The installation steel strip 2 is continuously welded and fixed along the top periphery of the steel frame 1 to form a closed installation reference line, which provides support and positioning reference for the rubber block.

[0039] The transverse rubber block 3 and the longitudinal rubber block 4 are connected end to end to form a continuous and closed annular support surface. The center of the annular support surface is raised by the arc-shaped outline of the transverse rubber block 3, and the sides and ends are smoothly transitioned by the plane of the longitudinal rubber block 4. The overall shape is adapted to the natural fit of the screen, ensuring that the screen is subjected to uniform force and has no local suspension or stress concentration when it is pressed.

[0040] Furthermore, the soft rubber sealing strip 6 has a circular cross-section, which has good elastic recovery performance and contact sealing performance. When the screen is pressed down by the clamping mechanism, the circular cross-section soft rubber sealing strip 6 undergoes radial compression deformation in the vertical direction, which can adapt to the slight unevenness at the bottom of the screen and effectively fill the gap, thereby achieving circumferential full sealing and significantly reducing the risk of drilling fluid leakage from the edge of the screen.

[0041] Based on the above embodiments, the hard rubber base block 5 and the soft rubber sealing strip 6 are fixed together by bonding or vulcanization.

[0042] When using an adhesive bonding method, a high shear strength rubber-specific adhesive is used to firmly attach the soft rubber sealing strip 6 to the top groove of the hard rubber base block 5.

[0043] When using vulcanization bonding, two rubber materials with different hardnesses are co-vulcanized in a mold, forming a strong bond at the molecular level, thereby achieving higher structural integrity and durability, and effectively preventing delamination or peeling under high-frequency vibration conditions.

[0044] Furthermore, the rigid rubber block 5 is preferably made of rubber material with a Shore hardness of 70A to 90A, which can ensure that it can provide sufficient structural rigidity to stably support the screen and effectively transmit the excitation force of the vibrating screen, thereby avoiding the attenuation of screen amplitude due to the rubber block being too soft.

[0045] Meanwhile, the soft rubber sealing strip 6 is preferably made of rubber material with a Shore hardness of 30A to 50A, which gives it good elasticity and deformation ability. When the screen is fixed by the clamping device, the soft rubber sealing strip 6 can generate sufficient compression deformation, tightly filling the micro gap between the screen and the hard rubber base block 5, thereby forming a reliable sealing interface and effectively preventing drilling fluid from leaking from the edge of the screen.

[0046] Based on the above embodiments, the screen frame also includes a guide plate 7, which is fixed to the inner side of the steel frame 1 and aligned with the center line of the arc-shaped support surface of the transverse rubber block 3 to ensure that it is located in the center of the screen installation path.

[0047] The top of the guide plate 7 is rounded to smoothly guide the edge of the screen during installation or disassembly, avoiding scratches, jamming, or increased operating resistance caused by sharp edges, thereby improving on-site assembly efficiency and screen life.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A vibrating screen frame for drilling fluid, characterized in that, include: A steel frame (1) with mounting steel bars (2) along its perimeter at the top; Horizontal rubber blocks (3) are symmetrically arranged on the upper surfaces of the front and rear sides of the steel frame (1); Longitudinal rubber blocks (4) are symmetrically arranged on the upper surfaces of the left and right sides of the steel frame (1), and the two ends of the longitudinal rubber blocks (4) are flush with the ends of the transverse rubber blocks (3). The transverse rubber block (3) and the longitudinal rubber block (4) both include a hard rubber base block (5) and a soft rubber sealing strip (6) embedded in the top of the hard rubber base block (5). The bottom of the hard rubber base block (5) is provided with a groove that cooperates with the mounting steel strip (2).

2. The vibrating screen frame for drilling fluid according to claim 1, characterized in that, The upper surface of the transverse rubber block (3) is an arc-shaped support surface that is high in the middle and low on both sides.

3. The vibrating screen frame for drilling fluid according to claim 2, characterized in that, The upper surface of the longitudinal rubber block (4) is a plane, and the height of the longitudinal rubber block (4) is consistent with the end height of the arc-shaped support surface.

4. The vibrating screen frame for drilling fluid according to claim 3, characterized in that, The cross-section of the mounting steel bar (2) is rectangular, and the mounting steel bar (2) is continuously welded and fixed along the top periphery of the steel frame (1).

5. The vibrating screen frame for drilling fluid according to claim 4, characterized in that, The transverse rubber block (3) and the longitudinal rubber block (4) together form a closed annular support surface.

6. The vibrating screen frame for drilling fluid according to claim 5, characterized in that, The connection between the hard rubber base block (5) and the soft rubber sealing strip (6) is by bonding or vulcanization.

7. The vibrating screen frame for drilling fluid according to claim 6, characterized in that, The cross-section of the soft rubber sealing strip (6) is circular.

8. The vibrating screen frame for drilling fluid according to claim 2, characterized in that, It also includes a guide plate (7), which is fixed to the inner side of the steel frame (1) and aligned with the center line of the arc-shaped support surface.

9. The vibrating screen frame for drilling fluid according to claim 8, characterized in that, The top of the guide plate (7) is rounded.

10. The vibrating screen frame for drilling fluid according to claim 1, characterized in that, The steel frame (1) is constructed by welding steel sections or steel plates.

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