A two-stage pusher centrifuge screen plate installation tool

Abstract

The utility model relates to centrifuge field, concretely relates to a kind of two-stage piston pushing material centrifuge screen plate installation tool, including hingedly arranged support plate one and support plate two, through-hole is set in support plate two, one side of through-hole is provided with nut, nut is connected with adjusting bolt inside thread, the tail of adjusting bolt passes through through-hole and abuts on support plate one;Support plate one and the two sides of support plate two respectively set apart have gap one and gap two.The installation tool provided by the utility model uses, gap one, gap two are respectively clamped in the edge of first screen plate and the penultimate screen plate, rotating adjusting bolt, adjusting bolt tail pushes support plate one, support plate one and support plate two reverse rotation around pivot, gap one, gap two are respectively temporarily propped open first screen plate and the penultimate screen plate to two sides, until the space of last screen plate is enough to be loaded, so that last screen plate is installed easily and quickly, with economic, practical characteristics, easy to popularize.

Description

Technical Field

[0001] This utility model relates to the field of centrifuges, specifically to a screen plate installation tool for a two-stage piston pusher centrifuge. Background Technology

[0002] Two-stage piston centrifuges are widely used in industries such as salt production, chemical processing, metallurgy, coal mining, and pharmaceuticals due to their advantages of continuous operation, high separation efficiency, large production capacity, low filter cake moisture content, and compact design. A simplified structural diagram of a typical two-stage piston centrifuge is shown below. Figure 7 As shown, it mainly consists of a feed pipe 1, a material distribution plate 2, a primary screen 3, a primary drum, a secondary screen 4, a secondary drum, a filter cake outlet 5, a filtrate outlet 6, and a washing device 7. The working principle is as follows: The suspension enters the feed pipe 1 and first reaches the material distribution plate 2. Under the centrifugal force of the material distribution plate 2, it is evenly thrown along the circumference onto the primary screen 3 and the primary drum (the primary screen is attached to the surface of the primary drum). The solid phase is trapped to form a filter cake. Under the high-speed rotation of the primary drum, most of the filtrate exits through the gaps in the primary screen and the small holes in the primary drum, and is discharged through the filtrate outlet 6. The trapped filter cake is pushed onto the secondary screen 4 and the secondary drum (the secondary screen is attached to the surface of the secondary drum) under the rotation of the primary drum. After the filter cake loosens, it is re-distributed and finally discharged through the filter cake outlet 5. The screen is a crucial component in the two-stage piston pusher centrifuge for centrifugal separation, directly affecting the separation effect and operational performance.

[0003] In two-stage piston centrifuges, the screens are typically made of various stainless steel materials such as 316, 2507, and 2205. For example... Figure 8 As shown, the screen is modularly assembled into a cylindrical shape by multiple fan-shaped screen plates 16 against the inner wall of the rotating drum 17. Adjacent screen plates 16 are held together tightly by their own elasticity, effectively preventing material leakage. Bolt holes are pre-drilled on the screen plates 16, and each screen plate 16 is independently fixed to the rotating drum 17 by bolts. The independently fixed screen plates 16 can be disassembled and installed individually, eliminating the need for large-scale disassembly of other components of the centrifuge. Maintenance personnel can quickly replace damaged or clogged screen plates, reducing equipment downtime and improving production efficiency. During screen assembly, multiple fan-shaped screen plates are sequentially assembled against the inner wall of the rotating drum. When installing the last screen plate, the already installed screen plates, due to their elastic rebound and the fixed dimensions of the inner wall of the rotating drum, cause adjacent screen plates to expand outwards, further compressing the final installation space. This results in insufficient remaining space, making it difficult to install the last screen plate. Summary of the Invention

[0004] To address the problem that during screen assembly, the installed screen plates, due to elastic rebound and the fixed dimensions of the inner wall of the drum, cause adjacent screen plates to expand outwards, further compressing the final installation space and resulting in insufficient remaining space, making it difficult to install the last screen plate, this invention proposes a screen plate installation tool for a two-stage piston pusher centrifuge. During the screen installation process of the two-stage piston pusher centrifuge, this tool temporarily expands the first and second-to-last screen plates to both sides until sufficient space is created to install the last screen plate, thus solving the problem of difficulty in installing the last screen plate due to insufficient remaining space.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A screen plate installation tool for a two-stage piston pusher centrifuge includes a hinged support plate one and a support plate two. The support plate two has a through hole, and a nut is provided on one side of the through hole. An adjusting bolt is internally threaded onto the nut, and the tail of the adjusting bolt passes through the through hole and abuts against the support plate one. Notches one and two are respectively provided on opposite sides of the support plate one and support plate two. Notches one and two respectively engage with the edges of the first and second-to-last screen plates. Pushing the support plate one and support plate two relative to each other increases the opening width between them, temporarily opening the two screen plates to create sufficient space for inserting the last screen plate.

[0007] Furthermore, a rotating shaft is rotatably connected between the first support plate and the second support plate. A first sleeve and a second sleeve are fitted onto the rotating shaft. One end of the first sleeve is fixedly connected to the first support plate, and one end of the second sleeve is fixedly connected to the second support plate. This allows the first and second support plates to swing around the rotating shaft.

[0008] Furthermore, a torsion spring is fitted onto the rotating shaft, with the inner ring of the torsion spring fitted onto the outer wall of the rotating shaft, and the torsion spring is positioned between support plate one and support plate two.

[0009] Furthermore, the torsion spring has an upper torsion arm and a lower torsion arm extending from its two ends, respectively. The upper torsion arm contacts the first support plate, and the lower torsion arm contacts the second support plate. The upper and lower torsion arms of the torsion spring abut against the first and second support plates, respectively, keeping the first and second support plates in an open position. Thus, the first and second support plates maintain pressure on the screen plate through the preload of the torsion spring.

[0010] Furthermore, a baffle extending towards support plate one is provided at the upper center of support plate two. An arc-shaped groove is formed within the baffle, and a knob bolt is disposed within the arc-shaped groove. A threaded hole is formed on support plate one, and the lower end of the knob bolt passes through the arc-shaped groove and is threaded into the threaded hole. When the knob bolt is tightened, the opening width between support plate one and support plate two is locked.

[0011] Furthermore, the outer diameter of the top of the knob bolt is greater than the width of the arc-shaped groove. After tightening the knob bolt, it presses firmly against the surface of the baffle.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] When using the installation tool provided by this utility model, notches one and two respectively engage the edges of the first and second-to-last screen plates, and the preload of the torsion spring ensures the tool is initially fixed. Turning the adjusting bolt clockwise pushes the support plate one at its tail, causing support plate one and support plate two to rotate in opposite directions around the axis. Notches one and two temporarily open the first and second-to-last screen plates to both sides until sufficient space is created to insert the last screen plate. After inserting the last screen plate, turning the adjusting bolt counterclockwise disengages the notches from the edges of the screen plates, allowing the tool to be easily removed. Therefore, in the screen installation process of a two-stage piston pusher centrifuge, using the tool provided by this utility model makes the installation of the last screen plate easy and quick, and is economical, practical, and easy to promote. Attached Figure Description

[0014] Figure 1 This is a perspective view of a screen plate installation tool for a two-stage piston pusher centrifuge according to the present invention;

[0015] Figure 2 This is an exploded view of a screen plate installation tool for a two-stage piston pusher centrifuge according to the present invention;

[0016] Figure 3 This is a schematic diagram of the support plate one in the screen plate installation tool of a two-stage piston pusher centrifuge according to the present invention;

[0017] Figure 4 This is a schematic diagram of the second support plate in the screen plate installation tool of a two-stage piston pusher centrifuge according to the present invention;

[0018] Figure 5 This is a schematic diagram showing the connection relationship between support plate one, support plate two, and torsion spring in a screen plate installation tool for a two-stage piston pusher centrifuge according to this utility model.

[0019] Figure 6 This is a schematic diagram illustrating the usage of a screen plate installation tool for a two-stage piston pusher centrifuge according to this utility model.

[0020] Figure 7 This is a schematic diagram of a two-stage piston pusher centrifuge.

[0021] Figure 8 This diagram shows the connection relationship between the rotating drum and the screen in a two-stage piston centrifuge.

[0022] The numbers in the attached diagram are:

[0023] 1. Support plate one; 2. Support plate two; 3. Through hole; 4. Nut; 5. Adjusting bolt; 6. Notch one; 7. Notch two; 8. Rotating shaft; 9. Sleeve one; 10. Sleeve two; 11. Torsion spring; 1101. Upper torsion arm; 1102. Lower torsion arm; 12. Baffle; 13. Arc-shaped long groove; 14. Knob bolt; 15. Threaded hole; 16. Screen plate; 17. Rotating drum. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1-6 As shown, this embodiment provides a screen plate installation tool for a two-stage piston pusher centrifuge, including a hinged support plate 1 and a support plate 2. The support plate 2 has a through hole 3, and a nut 4 is provided on one side of the through hole 3. The nut 4 is welded to the support plate 2. An adjusting bolt 5 is internally threaded onto the nut 4. The tail of the adjusting bolt 5 passes through the through hole 3 and abuts against the support plate 1. The nut 4 welded to the support plate 2 and the adjusting bolt 5 form a threaded pair. When the adjusting bolt 5 is rotated, its tail pushes the support plate 1 outward, increasing the opening width between the support plate 1 and the support plate 2. Notches 6 and 7 are respectively provided on opposite sides of the support plate 1 and the support plate 2. Notches 6 and 7 are designed to match the edges of the screen plate 16, allowing the tool to be embedded between the first screen plate 16 and the penultimate screen plate 16, preventing slippage during operation.

[0026] The installation tool provided by this utility model has a hinged support plate 1 and a hinged support plate 2 forming a variable opening and closing structure. Notches 6 and 7 are respectively engaged at the edges of the first screen plate 16 and the second-to-last screen plate 16. By rotating the adjusting bolt 5, the support plates 1 and 2 are rotated in opposite directions, increasing the opening width between the first and second-to-last screen plates 16. This temporarily opens the two screen plates 16, creating sufficient space to insert the last screen plate 16. After the last screen plate 16 is installed and closed, rotating the adjusting bolt 5 in the opposite direction allows the tool to be easily removed.

[0027] It should be noted that during use, the stress generated by the tool temporarily opening the first screen plate 16 and the second to last screen plate 16 will cause further elastic deformation of the installed screen plate 16. After the tool is removed, the screen plate 16 will recover by elasticity and will not affect the normal use of the subsequent screen.

[0028] In this embodiment, a rotating shaft 8 is rotatably connected between the support plate 1 and the support plate 2. A sleeve 9 and a sleeve 10 are fitted onto the rotating shaft 8. One end of the sleeve 9 is fixedly connected to the support plate 1, and one end of the sleeve 10 is fixedly connected to the support plate 2. Through this structure, the support plate 1 and the support plate 2 are hinged together via the rotating shaft 8. The sleeves 9 and 10 fitted onto the rotating shaft 8 allow the support plate 1 and the support plate 2 to swing around the rotating shaft 8.

[0029] In this invention, a torsion spring 11 is fitted onto the rotating shaft 8. The inner ring of the torsion spring 11 is fitted onto the outer wall of the rotating shaft 8. The torsion spring 11 is positioned between the support plate 1 and the support plate 2. The torsion spring 11 provides preload. Specifically, an upper torsion arm 1101 and a lower torsion arm 1102 extend from both ends of the torsion spring 11. The upper torsion arm 1101 contacts the support plate 1, and the lower torsion arm 1102 contacts the support plate 2. The upper torsion arm 1101 and the lower torsion arm 1102 of the torsion spring 11 abut against the support plate 1 and the support plate 2, respectively, keeping the support plate 1 and the support plate 2 in an open position. Thus, the support plate 1 and the support plate 2 maintain pressure on the screen plate 16 through the preload of the torsion spring 11, preventing the tool from loosening.

[0030] In this invention, a baffle 12 extending towards the support plate 1 is provided at the upper center of the second support plate 2. An arc-shaped groove 13 is formed within the baffle 12, and a knob bolt 14 is disposed within the arc-shaped groove 13. A threaded hole 15 is formed on the support plate 1, and the lower end of the knob bolt 14 passes through the arc-shaped groove and is threaded into the threaded hole 15. When the knob bolt 14 is tightened, the opening width between the first support plate 1 and the second support plate 2 is locked, preventing accidental loosening during carrying. Releasing the knob bolt 14 releases the lock, facilitating adjustment of the opening width between the first support plate 1 and the second support plate 2.

[0031] It is worth mentioning that the outer diameter of the top of the knob bolt 14 is larger than the width of the arc-shaped groove 13. After the knob bolt 14 is tightened, it presses firmly against the surface of the baffle 12 to ensure a locking effect.

[0032] The working principle of this utility model is as follows:

[0033] Please refer to the instructions again when using it. Figure 6The tool's notch 1 (6) and notch 2 (7) are respectively wedged into the edges of the first sieve plate 16 and the second-to-last sieve plate 16. The preload of the torsion spring 11 ensures the tool is initially fixed. The adjusting bolt 5 is rotated clockwise, and the tail of the adjusting bolt 5 pushes the support plate 1. The support plate 1 and the support plate 2 rotate in the opposite direction around the rotating shaft 8. The notches 1 (6) and notch 2 (7) temporarily open the first sieve plate 16 and the second-to-last sieve plate 16 to both sides until enough space is created to insert the last sieve plate 16. After inserting the last sieve plate 16, the adjusting bolt 5 is rotated counterclockwise, and the notches disengage from the edges of the sieve plates 16, allowing the tool to be easily pulled out.

[0034] In summary, the tool provided by this invention makes the installation of the last screen plate in the screen installation process of a two-stage piston pusher centrifuge easy and quick, and is economical, practical and easy to promote.

[0035] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A screen plate installation tool for a two-stage piston pusher centrifuge, characterized in that, The support includes a hinged support plate 1 (1) and a support plate 2 (2). The support plate 2 (2) has a through hole (3). A nut (4) is provided on one side of the through hole (3). An adjusting bolt (5) is internally threaded onto the nut (4). The tail of the adjusting bolt (5) passes through the through hole (3) and abuts against the support plate 1 (1). Notch 1 (6) and notch 2 (7) are respectively provided on the opposite sides of the support plate 1 (1) and the support plate 2 (2).

2. The screen plate installation tool for a two-stage piston pusher centrifuge according to claim 1, characterized in that, A rotating shaft (8) is rotatably connected between the first support plate (1) and the second support plate (2). A sleeve (9) and a sleeve (10) are fitted on the rotating shaft (8). One end of the sleeve (9) is fixedly connected to the first support plate (1), and one end of the sleeve (10) is fixedly connected to the second support plate (2).

3. The screen plate installation tool for a two-stage piston pusher centrifuge according to claim 2, characterized in that, A torsion spring (11) is fitted on the rotating shaft (8). The inner ring of the torsion spring (11) is fitted on the outer wall of the rotating shaft (8). The torsion spring (11) is located between the support plate one (1) and the support plate two (2).

4. The screen plate installation tool for a two-stage piston pusher centrifuge according to claim 3, characterized in that, The torsion spring (11) has an upper torsion arm (1101) and a lower torsion arm (1102) extending from its two ends respectively. The upper torsion arm (1101) is in contact with the first support plate (1), and the lower torsion arm (1102) is in contact with the second support plate (2).

5. The screen plate installation tool for a two-stage piston pusher centrifuge according to claim 2, characterized in that, A baffle (12) extending toward the support plate (1) is provided in the middle of the upper part of the support plate (2). An arc-shaped long groove (13) is provided in the baffle (12). A knob bolt (14) is provided in the arc-shaped long groove (13). A threaded hole (15) is provided on the support plate (1). The lower end of the knob bolt (14) passes through the arc-shaped groove and is threaded into the threaded hole (15).

6. The screen plate installation tool for a two-stage piston pusher centrifuge according to claim 5, characterized in that, The outer diameter of the top of the knob bolt (14) is greater than the width of the arc-shaped groove (13).

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