Steel lined graphite impeller

Abstract

This invention discloses a steel-lined graphite impeller, comprising a graphite impeller body and a hemispherical cap, two symmetrically arranged first cavities formed inside the graphite impeller body, a second cavity formed inside the graphite impeller body with an annular cross-sectional shape, a third cavity formed inside the hemispherical cap, a steel bushing embedded in the right side of the hemispherical cap, and a first connecting and mounting mechanism disposed on the left side of the graphite impeller body. This steel-lined graphite impeller allows for improved strength during use by adding a steel bushing, preventing damage. It also facilitates disassembly and assembly, ensures reliable installation and connection, prevents the graphite impeller body from detaching during use, guarantees effective use, avoids accidental detachment and impacts to people and objects, and ensures safety during use.

Description

Technical Field

[0001] This invention relates to the field of impeller technology, specifically to a steel-lined graphite impeller. Background Technology

[0002] An impeller can refer to a wheel disk with moving blades, which is a component of the rotor of an impulse steam turbine, or it can refer to the wheel disk and the rotating blades mounted on it. Impellers can be classified according to their shape and opening / closing status. The impellers of graphite pumps or graphite axial flow pumps used in the chemical industry are generally made of graphite. However, the graphite impellers currently in use have low strength, making them prone to damage during use. In addition, the graphite impeller is connected to the drive shaft by a threaded connection, which is prone to wear and even breakage during long-term use, resulting in a decrease in the reliability of the connection and the risk of detachment during use. Once detached, it may easily hit people and objects around it, and also cause damage to itself, posing a safety hazard. Therefore, a steel-lined graphite impeller is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a steel-lined graphite impeller to solve the problems mentioned in the background art, such as the low strength of existing graphite impellers during use, which makes them prone to damage, and the fact that the graphite impeller is connected to the drive shaft by a threaded connection, which is prone to wear and even breakage of the threads during long-term use, resulting in a decrease in the reliability of the connection and the risk of detachment during use. Once detached, it may easily hit and damage people and objects around it, as well as itself, posing a safety hazard.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a steel-lined graphite impeller, comprising a graphite impeller body and a hemispherical cap. The first cavity, two symmetrically arranged first cavities are opened inside the graphite impeller body; The second cavity is formed inside the graphite impeller body, and the cross-sectional shape of the second cavity is annular. A third cavity is formed inside the hemispherical cap; A steel bushing is fitted and installed on the right side of the hemispherical cap. The first connecting and mounting mechanism is disposed on the left side of the graphite impeller body; A first limiting and fixing mechanism is disposed within the first cavity; A disassembly mechanism, which is connected to the first limiting and fixing mechanism; The second connection and installation mechanism is disposed on the right side of the graphite impeller body; The second limiting and fixing mechanism is connected to the second connecting and mounting mechanism; An anti-detachment mechanism is disposed within the second cavity; A rotating mechanism is disposed within the second cavity; A moving mechanism, which is connected to the rotating mechanism.

[0005] The above technical solution improves the strength of the graphite impeller during use, facilitates disassembly and assembly, ensures reliable installation, and prevents detachment.

[0006] As a preferred embodiment of the present invention, the first connecting and mounting mechanism includes: The first threaded groove is formed on the right side of the hemispherical cap; The first threaded rod is fixedly installed on the left side of the graphite impeller body, and the first threaded rod and the first threaded groove form a threaded detachable connection structure.

[0007] By adopting the above technical solution, it is convenient to connect and install the graphite impeller body and the hemispherical cap through the setting of the first threaded groove and the first threaded rod.

[0008] As a preferred embodiment of the present invention, the first limiting and fixing mechanism includes: A compression spring is fixedly installed on the right wall of the first cavity; The first limiting rod is fixedly installed on the left end of the compression spring, and the first limiting rod is slidably connected to the wall of the first cavity, and the first limiting rod moves through to the left side of the graphite impeller body. The first limiting slot, two symmetrically arranged first limiting slots are opened on the right side of the hemispherical cap, and the first limiting rod matches the first limiting slot.

[0009] By adopting the above technical solution, the setting of the first limiting lever and the second limiting slot can ensure the limiting of the hemispherical cap and prevent the hemispherical cap from loosening and falling off.

[0010] As a preferred embodiment of the present invention, the disassembly mechanism includes: A strip-shaped movable plate, which is slidably connected to the wall of the third cavity; A push rod is fixedly and vertically installed on the left side of the strip-shaped movable plate, and the push rod is movably installed through the hemispherical cap. Two fixed push rods, symmetrically arranged, are fixedly and vertically installed on the right side of the strip-shaped moving plate, and the fixed push rods are movably inserted into the first limiting slot.

[0011] By adopting the above technical solution, it is convenient to push the push rod to make the strip moving plate drive the fixed push rod to move and push the first limit lever out of the first limit slot.

[0012] As a preferred embodiment of the present invention, the second connection and installation mechanism includes: The second threaded groove is formed on the right side of the graphite impeller body; The second threaded rod has a left end that forms a detachable threaded connection with the second threaded groove, and the right end of the second threaded rod is detachably connected to the drive shaft.

[0013] The above technical solution facilitates the connection and installation of the graphite impeller body and the drive shaft through the setting of the first threaded groove and the second threaded rod.

[0014] As a preferred embodiment of the present invention, the second limiting and fixing mechanism includes: Two fixed circular plates, symmetrically arranged, are fixedly fitted onto the second threaded rod. The left side surfaces of two symmetrically arranged sliding plates are slidably connected to the wall surface of the second cavity; The second limiting rod is fixedly and perpendicularly to the sliding plate, and the second limiting rod is movably inserted into the second threaded groove. The inner end face of the second limiting rod is inclined, and the inclined direction of the second limiting rod is to the right. A tension spring is fitted onto the outside of the second limiting lever, and the inner and outer ends of the tension spring are respectively fixedly connected to the wall of the second cavity and the inner side of the sliding plate; The second limiting slots are symmetrically arranged on the fixed circular plate, and the second limiting rod matches the second limiting slot.

[0015] By adopting the above technical solution, it is convenient to limit and fix the fixed circular plate and the second threaded rod through the setting of the second limiting rod and the second limiting groove, so as to prevent the graphite impeller body from separating from the second threaded rod.

[0016] As a preferred embodiment of the present invention, the anti-detachment mechanism includes: Two symmetrically arranged fixing seats are fixedly installed on the wall of the second cavity; A straight rod, which is rotatably connected to the fixed base; A counterweight is fixedly installed at the left end of the straight rod.

[0017] By adopting the above technical solution, the straight rod will rotate when the counterweight is set, so that the right end of the straight rod abuts against the outer end of the second limiting rod, thus preventing the second limiting rod from moving during use.

[0018] As a preferred embodiment of the present invention, the rotating mechanism includes: The rotating ring is connected to the wall bearing of the second cavity; A lever, which is fixedly and vertically installed on the right side of the rotating ring; An arc-shaped through groove is formed on the right side of the graphite impeller body and is connected to the second cavity. The actuating rod passes through the arc-shaped through groove.

[0019] The above technical solution makes it easy to make the rotating ring rotate by rotating the lever.

[0020] As a preferred embodiment of the present invention, the moving mechanism includes: A guide groove is formed on the rotating ring; A fixed round rod is fixedly and vertically installed on the right side of the second limiting rod, and the fixed round rod passes through the guide groove.

[0021] By adopting the above technical solution, it is convenient for the fixed round rod to drive the second limit rod to move when the rotating ring rotates, through the setting of the guide groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the steel-lined graphite impeller can easily improve the strength during use by adding a steel bushing, prevent damage, facilitate disassembly and assembly, ensure the reliability of installation and connection, prevent the graphite impeller body from detaching during use, ensure effective use, avoid detachment and collision with people and objects, and ensure the safety of use. 1. During installation, first insert the first threaded rod into the second connecting groove for threaded connection, causing the hemispherical cap to rotate and move to the right. When the right side of the hemispherical cap abuts against the first limiting rod, it will push the first limiting rod to the right and compress the compression spring. When the first threaded rod is stably connected to the second connecting groove, the first limiting groove rotates with the hemispherical cap until it is collinear with the first limiting rod. Under the release of the compression spring, the first limiting rod extends into the first limiting groove, thereby limiting the hemispherical cap and preventing it from falling off during use. At the same time, the steel bushing increases the strength during use and prevents damage. 2. Then, the second threaded groove and the second threaded rod are threaded together, so that the second threaded rod drives the fixed round rod to extend into the second threaded groove. When the fixed round rod touches the second limiting rod, it will push the second limiting rod to move outward and cause the sliding plate to move synchronously to stretch the tension spring until the second threaded rod and the second threaded groove are stably connected. At this time, the second limiting groove and the second limiting rod are in a collinear position. At this time, under the action of the tension spring, the sliding plate drives the second limiting rod to move inward to reset, so that the second limiting rod extends into the second limiting groove, thereby playing a limiting and fixing role. 3. During use, when the graphite impeller body rotates, due to the setting of the counterweight, the left end of the straight rod is heavier than the right end. Under the action of centrifugal force, the straight rod rotates around the fixed seat as the fulcrum, causing the right end of the straight rod to rotate until it abuts the second limit rod, thereby generating an inward thrust on the second limit rod, preventing the second limit rod from moving out of the second limit groove during rotation, and improving the reliability of the connection. 4. During disassembly, the push rod can be pushed to the right to move the strip moving plate and the fixed push rod to the right, so that the fixed push rod pushes the first limit rod out of the first limit groove, and the hemispherical cap can be separated from the graphite impeller body. 5. By rotating the lever, the rotating ring is rotated, which causes the fixed round rod to move outward through the guide groove, thereby moving the second limit rod out of the second limit groove. At this time, the graphite impeller body can be separated from the second threaded rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the first limiting rod and the first limiting groove in the main view section of the present invention; Figure 3 This is a schematic diagram of the connection structure between the second limiting rod and the second limiting slot in the main view of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 The figure shows a schematic diagram of the three-dimensional structure of the hemispherical cap of this invention; Figure 6 This is a schematic diagram of the three-dimensional connection structure between the second threaded rod and the fixed ring of the present invention; Figure 7 This is a schematic diagram of the three-dimensional connection structure between the guide groove and the fixed round rod of the present invention; Figure 8 This is a schematic diagram of the right side view of the graphite impeller body of the present invention.

[0024] In the diagram: 1. Graphite impeller body; 2. Hemispherical cap; 3. First cavity; 4. Second cavity; 5. Third cavity; 6. Steel bushing; 7. First threaded groove; 8. First threaded rod; 9. Compression spring; 10. First limiting rod; 11. First limiting groove; 12. Strip-shaped moving plate; 13. Push rod; 14. Fixed push rod; 15. Second threaded groove; 16. Second threaded rod; 17. Fixed circular plate; 18. Sliding plate; 19. Second limiting rod; 20. Tension spring; 21. Second limiting groove; 22. Fixed seat; 23. Straight rod; 24. Counterweight; 25. Rotating ring; 26. Actuating rod; 27. Arc-shaped through groove; 28. Guide groove; 29. ​​Fixed circular rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-8 The technical solution of the present invention is as follows: a steel-lined graphite impeller, comprising a graphite impeller body 1 and a hemispherical cap 2, two symmetrically arranged first cavities 3 are opened inside the graphite impeller body 1, a second cavity 4 is opened inside the graphite impeller body 1, and the cross-sectional shape of the second cavity 4 is annular, a third cavity 5 is opened inside the hemispherical cap 2, and a steel bushing 6 is embedded and installed on the right side of the hemispherical cap 2. The steel bushing 6 can improve the strength of use and prevent damage. The first threaded groove 7 is opened on the right side of the hemispherical cap 2, and the first threaded rod 8 is fixedly installed on the left side of the graphite impeller body 1. The first threaded rod 8 and the first threaded groove 7 form a threaded detachable connection structure. Compression spring 9 is fixedly installed on the right wall of the first cavity 3, and first limiting rod 10 is fixedly installed on the left end of compression spring 9. The first limiting rod 10 is slidably connected to the wall of the first cavity 3, and the first limiting rod 10 extends through to the left side of graphite impeller body 1. Two symmetrically arranged first limiting slots 11 are opened on the right side of hemispherical cap 2, and the first limiting rod 10 matches the first limiting slot 11. The strip-shaped moving plate 12 is slidably connected to the wall of the third cavity 5. The push rod 13 is fixedly and vertically installed on the left side of the strip-shaped moving plate 12, and the push rod 13 is movably installed through the hemispherical cap 2. Two symmetrically arranged fixed push rods 14 are fixedly and vertically installed on the right side of the strip-shaped moving plate 12, and the fixed push rods 14 are movably installed through the first limiting slot 11. The second threaded groove 15 is opened on the right side of the graphite impeller body 1. The left end of the second threaded rod 16 and the second threaded groove 15 form a threaded detachable connection structure, and the right end of the second threaded rod 16 is detachably connected to the drive shaft. Two symmetrically arranged fixed circular plates 17 are fixedly fitted onto the second threaded rod 16. The left side of the two symmetrically arranged sliding plates 18 is slidably connected to the wall of the second cavity 4. The second limiting rod 19 is fixedly arranged perpendicular to the sliding plate 18 and is movably inserted into the second threaded groove 15. The inner end face of the second limiting rod 19 is inclined, and the inclined direction of the second limiting rod 19 is to the right. The tension spring 20 is fitted onto the outside of the second limiting rod 19, and the inner and outer ends of the tension spring 20 are fixedly connected to the wall of the second cavity 4 and the inner side of the sliding plate 18, respectively. Two symmetrically arranged second limiting slots 21 are opened on the fixed circular plates 17, and the second limiting rod 19 matches the second limiting slots 21. Two symmetrically arranged fixed seats 22 are fixedly installed on the wall of the second cavity 4, the straight rod 23 is rotatably connected to the fixed seats 22, and the counterweight 24 is fixedly installed on the left end of the straight rod 23; The rotating ring 25 is connected to the wall bearing of the second cavity 4. The lever 26 is fixedly and vertically installed on the right side of the rotating ring 25. The arc-shaped through groove 27 is opened on the right side of the graphite impeller body 1 and is connected to the second cavity 4. The lever 26 is set through the arc-shaped through groove 27. The guide groove 28 is formed on the rotating ring 25. The fixed round rod 29 is fixedly and vertically installed on the right side of the second limit rod 19, and the fixed round rod 29 passes through the guide groove 28. The connection between the second threaded rod 16 and the drive shaft can be a connection structure between the second threaded rod 16 and the graphite impeller body 1.

[0027] Working principle: When installing before use, first connect the first threaded rod 8 to the first threaded groove 7 by threading. Rotate the hemispherical cap 2 to make it rotate and move to the right. When the hemispherical cap 2 touches the first limit lever 10, it will push the first limit lever 10 to the right and squeeze the compression spring 9. When the first threaded rod 8 is stably connected to the first threaded groove 7, the first limiting groove 11 rotates with the hemispherical cap 2 until it is collinear with the first limiting rod 10. Under the release action of the compression spring 9, the first limiting rod 10 extends into the first limiting groove 11 to achieve the limiting and fixing of the hemispherical cap 2 and prevent the hemispherical cap 2 from falling off during use. Then connect the second threaded rod 16 to the second threaded groove 15, rotate the second threaded rod 16 and move the fixed circular plate 17 to the left. When the fixed circular plate 17 touches the second limiting rod 19, the second limiting rod 19 will move outward, causing the sliding plate 18 to move outward synchronously and stretching the tension spring 20. When the second threaded rod 16 is stably connected to the second threaded groove 15, the second limiting groove 21 rotates with the fixed circular plate 17 until it is collinear with the second limiting rod 19. Under the action of the tension spring 20, the sliding plate 18 drives the second limiting rod 19 to move inward to reset, so that the second limiting rod 19 extends into the second limiting groove 21, thereby achieving the limiting fixation between the graphite impeller body 1 and the second threaded rod 16. Meanwhile, during use, the counterweight 24 makes the left end of the straight rod 23 heavier than the right end. Therefore, when rotating, under the action of centrifugal force, the straight rod 23 rotates with the fixed seat 22 as the fulcrum, causing the right end of the straight rod 23 to abut against the outer end of the second limiting rod 19, thereby generating an inward pushing force on the second limiting rod 19. This ensures that the second limiting rod 19 is stably placed in the second limiting slot 21, preventing the second limiting rod 19 from moving outward under the action of centrifugal force during rotation, and ensuring the reliability of the connection and installation. During disassembly, the push rod 13 can be moved to the right first, so that the strip moving plate 12 drives the fixed push rod 14 to move to the right, so that the fixed push rod 14 pushes the first limiting rod 10 out of the first limiting groove 11, and at this time the hemispherical cap 2 can be removed. By pulling the lever 26, the rotating ring 25 is rotated, which causes the fixed round rod 29 to move outward through the guide groove 28, so that the second limiting rod 19 moves out of the second limiting groove 21. At this time, the graphite impeller body 1 can be separated from the second threaded rod 16. The contents not described in detail in this specification are known prior art to those skilled in the art.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel-lined graphite impeller, comprising a graphite impeller body (1) and a hemispherical cap (2), characterized in that, Also includes: The first cavity (3) is symmetrically arranged in two first cavities (3) inside the graphite impeller body (1); The second cavity (4) is located inside the graphite impeller body (1), and the cross-sectional shape of the second cavity (4) is annular. The third cavity (5) is located inside the hemispherical cap (2); A steel bushing (6) is fitted and installed on the right side of the hemispherical cap (2); The first connecting and mounting mechanism is disposed on the left side of the graphite impeller body (1); The first limiting and fixing mechanism is disposed in the first cavity (3); A disassembly mechanism, which is connected to the first limiting and fixing mechanism; The second connecting and mounting mechanism is disposed on the right side of the graphite impeller body (1); The second limiting and fixing mechanism is connected to the second connecting and mounting mechanism; An anti-detachment mechanism is provided in the second cavity (4); A rotating mechanism is disposed within the second cavity (4); A moving mechanism, which is connected to the rotating mechanism; The second connection and installation mechanism includes: The second threaded groove (15) is opened on the right side of the graphite impeller body (1); The second threaded rod (16) has a left end that forms a detachable threaded connection with the second threaded groove (15), and the right end of the second threaded rod (16) is detachably connected to the drive shaft. The second limiting and fixing mechanism includes: Two fixed circular plates (17) arranged symmetrically are fixedly fitted onto the second threaded rod (16); The left side of the two symmetrically arranged sliding plates (18) is slidably connected to the wall of the second cavity (4); The second limiting rod (19) is fixedly and perpendicularly to the sliding plate (18), and the second limiting rod (19) is movably inserted into the second threaded groove (15). The inner end face of the second limiting rod (19) is inclined, and the inclined direction of the second limiting rod (19) is to the right. A tension spring (20) is fitted on the outside of the second limiting lever (19), and the inner and outer ends of the tension spring (20) are fixedly connected to the wall of the second cavity (4) and the inner side of the sliding plate (18), respectively. The second limiting slot (21) is symmetrically arranged on the fixed circular plate (17), and the second limiting rod (19) matches the second limiting slot (21); Anti-fall-off mechanisms include: Fixing base (22), two symmetrically arranged fixing bases (22) are fixedly installed on the wall of the second cavity (4); A straight rod (23) is rotatably connected to the fixed base (22); The counterweight (24) is fixedly installed on the left end of the straight rod (23). When rotating, the straight rod (23) rotates with the fixed seat (22) as the fulcrum under the action of centrifugal force, so that the right end of the straight rod (23) abuts against the outer end of the second limiting rod (19), thereby generating an inward pushing force on the second limiting rod (19). The rotating mechanism includes: Rotate the ring (25), which is connected to the wall bearing of the second cavity (4); A lever (26) is fixedly and vertically installed on the right side of the rotating ring (25); Arc-shaped through groove (27) is provided on the right side of the graphite impeller body (1), and the arc-shaped through groove (27) is connected to the second cavity (4), and the lever (26) is provided through the arc-shaped through groove (27); Mobile institutions include: Guide groove (28), the guide groove (28) is formed on the rotating ring (25); A fixed round rod (29) is fixedly and vertically installed on the right side of the second limiting rod (19), and the fixed round rod (29) passes through the guide groove (28).

2. The steel-lined graphite impeller according to claim 1, characterized in that, The first connection and installation mechanism includes: The first threaded groove (7) is opened on the right side of the hemispherical cap (2); The first threaded rod (8) is fixedly installed on the left side of the graphite impeller body (1), and the first threaded rod (8) and the first threaded groove (7) form a threaded detachable connection structure.

3. A steel-lined graphite impeller according to claim 2, characterized in that, The first limiting and fixing mechanism includes: Compression spring (9) is fixedly installed on the right wall of the first cavity (3); The first limiting rod (10) is fixedly installed on the left end of the compression spring (9), and the first limiting rod (10) is slidably connected to the wall of the first cavity (3), and the first limiting rod (10) extends through to the left side of the graphite impeller body (1). The first limiting slot (11) is symmetrically arranged on the right side of the hemispherical cap (2), and the first limiting rod (10) matches the first limiting slot (11).

4. A steel-lined graphite impeller according to claim 3, characterized in that, The disassembly mechanism includes: A strip-shaped moving plate (12) is slidably connected to the wall of the third cavity (5); A push rod (13) is fixedly and vertically installed on the left side of the strip-shaped moving plate (12), and the push rod (13) is movably installed through the hemispherical cap (2); Two fixed push rods (14) are symmetrically arranged and fixedly and vertically installed on the right side of the strip moving plate (12), and the fixed push rods (14) are movably inserted into the first limiting slot (11).

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