High-pressure-resistant centrifugal fan impeller

Abstract

The utility model discloses a high-pressure resistant centrifugal fan impeller, which relates to the field of centrifugal fan equipment and comprises a base, four groups of fixing columns are arranged at the top of the base, a first blade is mounted among the four groups of fixing columns, the bottom surface of the first blade clings to the top surface of the base, and a second blade is mounted at the top of the first blade. A fixing ring is arranged at the top end of the fixing column, the inner wall of the fixing ring is in threaded connection with the outer wall of the fixing column, and a machine cover is arranged at the top of the base. When the impeller is damaged, the bolts on the hood are detached, the hood is taken down, then the fixing ring is rotated to expose the whole blade set, then the damaged blade set is taken out of the fixing column and replaced with a new blade set, and finally the fixing ring and the hood are installed on the impeller device of the centrifugal machine. According to the design of the high-pressure-resistant centrifugal fan impeller device, it is not needed to cut and replace damaged blades like a traditional centrifugal fan impeller any more, welding operation in the repairing process is omitted, and personnel can replace the damaged blades conveniently.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal fan equipment, in particular to a high-pressure resistant centrifugal fan impeller. Background Art

[0002] The high-pressure centrifuge impeller is one of the key components of the centrifuge, responsible for rotating the mixture at high speed in the centrifuge, thereby generating a strong centrifugal force. The design and manufacture of the impeller directly affect the separation effect and stability of the centrifuge. The high-pressure centrifuge impeller usually adopts high-pressure resistant materials and advanced manufacturing technology to ensure that it can operate reliably in a high-pressure environment.

[0003] The centrifuge impeller may be worn and damaged during long-term use and needs to be repaired manually. Before repair, the impeller needs to be disassembled from the centrifuge and thoroughly cleaned. Then, the repair method should be selected according to the damage of the impeller. Generally, the repair may include welding, grinding or replacing damaged parts. If there is wear or small cracks on the impeller surface, special welding materials can be used for repair. For more serious damage, it is necessary to replace the components and reinstall the repaired impeller into the centrifuge for trial operation.

[0004] Since most of the current high-pressure centrifuge impellers are connected together by electric welding, when the impeller is damaged, the entire device needs to be disassembled and the damaged components need to be replaced. This repair method is too cumbersome. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a high-pressure resistant centrifugal fan impeller to solve the technical problem that the impeller blades of the traditional high-pressure resistant centrifugal fan impeller are difficult to replace when they are defective.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure resistant centrifugal fan impeller, comprising a base, four groups of fixing columns are provided on the top of the base, a first blade is installed in the middle of the four groups of fixing columns, and the bottom surface of the first blade is tightly attached to the top surface of the base, a second blade is installed on the top of the first blade, a fixing ring is provided on the top of the fixing column, and the inner wall of the fixing ring is threadedly connected to the outer wall of the fixing column, a hood is provided on the top of the base, and a connecting rod is fixed to the bottom of the hood, a fixing plate is fixed to the end of the connecting rod, and the two ends of the fixing plate are connected to the base by bolts.

[0007] By adopting the above technical solution, by setting the two blades of the impeller as a group of blades, when the blades of the impeller are damaged, it is sufficient to replace the damaged group or groups, without having to replace the impeller in the current way, which reduces the workload of personnel replacing blades. The blade installation clips are clipped into the fixing column and fixed with a fixing ring, and the fixing ring is connected to the fixing column by a threaded connection, which makes it easy for personnel to replace the damaged blades.

[0008] The present invention is further configured such that reinforcing ribs are fixed to the middle portions of the first blade and the second blade.

[0009] By adopting the above technical solution, reinforcing ribs are provided in the contact parts between blade 1 and blade 2 and the inner wall of the fixed column to reinforce the stress-bearing parts of blade 1 and blade 2, thereby preventing cracks in the blades caused by the high-intensity operation of the impeller.

[0010] The present invention is further configured such that a slot is provided on the top of the first blade and the bottom of the second blade.

[0011] By adopting the above technical solution, a card slot is opened at the top of the first blade and the bottom of the second blade, so that the first blade and the second blade are snap-connected, so that the ends of the first blade and the second blade can be in the same plane, and at the same time can limit each other, and the top ends of the first blade and the second blade are squeezed by a fixing ring to fix them.

[0012] The present invention is further configured such that a plurality of limiting grooves are fixed on the top of the base, and the inner walls of the limiting grooves fit with both sides of the first blade and the second blade.

[0013] By adopting the above technical solution, multiple sets of limiting grooves are installed at the top of the first blade and the bottom of the second blade. The inner walls of the limiting grooves share the force on the contact parts of the first blade and the second blade during operation. At the same time, the limiting grooves limit the first blade and the second blade, thereby reducing the deformation of the first blade and the second blade during the rotation of the impeller.

[0014] The present invention is further configured such that the cross section of the fixing column is configured as a right-angled sector.

[0015] By adopting the above technical solution, the cross-section of the fixing column is a right-angled fan, which increases the contact area between the middle part of the blade and the inner wall of the fixing column, increases the force-bearing area between the two, makes the blade evenly stressed, and avoids tearing caused by uneven force on the blade.

[0016] The present invention is further configured such that a connecting pipe is fixed to the bottom of the base, and a docking port is provided inside the connecting pipe.

[0017] By adopting the above technical solution, the output bearing of the motor is installed inside the docking port and fixed by a connecting pipe. The docking port has a limiting effect on the output bearing of the motor, so that the bearing can stably drive the impeller to rotate.

[0018] In summary, the present invention has the following beneficial effects:

[0019] The utility model solves the problem that the impeller blades of the existing high-pressure resistant centrifugal fan impeller are difficult to replace when they are damaged by arranging blades, reinforcing ribs, fixing columns and fixing rings. When the impeller is damaged, the bolts on the machine cover are removed and the machine cover is taken off, and then the fixing ring is rotated to expose the entire blade group, and then the blades of the damaged group are taken out from the fixing columns and replaced with a new group, and finally the fixing ring and the machine cover are installed on the centrifuge impeller device. The design of this high-pressure resistant centrifugal fan impeller device no longer requires cutting and replacing damaged blades like traditional centrifugal fan impellers, eliminates the welding operation during the repair process, and facilitates personnel to replace damaged blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall device of the utility model;

[0021] Figure 2 This is a bottom view of the overall device of the utility model;

[0022] Figure 3 This is the internal structure diagram of the utility model;

[0023] Figure 4 This is a schematic diagram of the impeller assembly of the device of the present utility model.

[0024] In the figure: 1. Base; 11. Limiting groove; 12. Fixing column; 13. Fixing ring; 2. Machine cover; 21. Fixing plate; 22. Bolt; 3. First blade; 31. Reinforcing rib; 32. Slot; 4. Connecting pipe; 41. Docking port; 5. Second blade. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following describes an embodiment of the present invention based on its overall structure.

[0027] A high pressure resistant centrifugal fan impeller, such as Figure 1 - Figure 4As shown, it includes a base 1, four groups of fixing columns 12 are provided on the top of the base 1, and a first blade 3 is installed in the middle of the four groups of fixing columns 12, and the bottom surface of the first blade 3 is tightly attached to the top surface of the base 1, and the second blade 5 is installed on the top of the first blade 3, and a fixing ring 13 is provided on the top of the fixing column 12, and the inner wall of the fixing ring 13 is threadedly connected to the outer wall of the fixing column 12, and a hood 2 is provided on the top of the base 1, and a connecting rod 23 is fixed to the bottom of the hood 2, and a fixing plate 21 is fixed to the end of the connecting rod 23, and the two ends of the fixing plate 21 are connected to the base 1 by bolts 22. By setting the two blades of the impeller as a group of blades, when the blades of the impeller are damaged, only one or several groups can be replaced, and there is no need to replace the impeller in the current way, which reduces the workload of personnel replacing blades. The blade is installed in the fixing column and fixed with a fixing ring, and the fixing ring is connected to the fixing column by a threaded connection, which is convenient for personnel to replace damaged blades.

[0028] See also Figure 4 A reinforcing rib 31 is fixed in the middle of the first blade 3 and the second blade 5. The contact parts of the middle of blade 1 3 and blade 2 5 with the inner wall of the fixing column 12 are both provided with reinforcing ribs 31 to reinforce the stress-bearing parts of blade 1 3 and blade 2 5 to prevent cracks in the blades caused by the high-intensity operation of the impeller.

[0029] See also Figure 4 A card slot 32 is provided at the top of the first blade 3 and the bottom of the second blade 5. By providing the card slot 32 at the top of the first blade 3 and the bottom of the second blade 5, the first blade 3 and the second blade 5 are snap-connected, so that the ends of the first blade 3 and the second blade 5 can be in the same plane and can limit each other at the same time. The top ends of the first blade 3 and the second blade 5 are squeezed and fixed by the fixing ring 13.

[0030] See also Figure 3 Multiple sets of limiting grooves 11 are fixed on the top of the base 1, and the inner walls of the limiting grooves 11 fit with both sides of the first blade 3 and the second blade 5. Multiple sets of limiting grooves 11 are installed on the top of the first blade 3 and the bottom of the second blade 5. The inner walls of the limiting grooves 11 share the force on the contact parts of the first blade 3 and the second blade 5 during work. At the same time, the limiting grooves 11 limit the first blade 3 and the second blade 5, reducing the deformation of the first blade 3 and the second blade 5 during the rotation of the impeller.

[0031] See also Figure 3 The cross-section of the fixing column 12 is set to a right-angled fan shape. The cross-section of the fixing column 12 is a right-angled fan shape, which increases the contact area between the middle part of the blade and the inner wall of the fixing column 12, increases the force-bearing area between the two, makes the blade evenly stressed, and avoids tearing caused by uneven force on the blade.

[0032] See also Figure 2A connecting pipe 4 is fixed to the bottom of the base 1, and a docking port 41 is opened inside the connecting pipe 4. The output bearing of the motor is installed inside the docking port 41 and fixed by the connecting pipe 4. The docking port 41 has a limiting effect on the output bearing of the motor, so that the bearing can stably drive the impeller to rotate.

[0033] The working principle of the present invention is as follows: first, the first blade 3 is installed in the middle of the fixing column 12, and then the second blade 5 is also installed in the middle of the fixing column 12, and the two groups of blades are buckled together through the card slot 32, and at the same time, the bottom ends of the first blade 3 and the second blade 5 are embedded in the inside of the limit groove 11 for fixation, and then the fixing ring 13 is installed and sleeved on the outer wall of the fixing column 12, so that the bottom of the fixing ring 13 squeezes the top of the first blade 3 and the second blade 5, and the two groups of blades are squeezed and fixed, and then the hood 2 is sleeved on the top of the base 1, and the fixing plate 21 is fixed to the base 1 with bolts 22, and finally the high-pressure centrifugal fan as a whole is installed on the bearing of the motor through the docking interface 4.

[0034] When the blades on the impeller are damaged and need to be replaced, first remove the bolts 22 from the fixing plate 21, remove the hood 2, then rotate the fixing ring 13 off the fixing column 12, replace the damaged set of blades, then install the fixing ring 13 on the fixing column 12, fix the first blade 3 and the second blade 5, and then fix the hood 2 to the base 1 through the fixing plate 21.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A high-pressure resistant centrifugal fan impeller, comprising a base (1), characterized in that: Four groups of fixing columns (12) are provided on the top of the base (1), a first blade (3) is installed in the middle of the four groups of fixing columns (12), and the bottom surface of the first blade (3) is tightly attached to the top surface of the base (1), a second blade (5) is installed on the top of the first blade (3), a fixing ring (13) is provided on the top of the fixing column (12), and the inner wall of the fixing ring (13) is threadedly connected to the outer wall of the fixing column (12), a machine cover (2) is provided on the top of the base (1), and a connecting rod (23) is fixed to the bottom of the machine cover (2), a fixing plate (21) is fixed to the end of the connecting rod (23), and both ends of the fixing plate (21) are connected to the base (1) by bolts (22).

2. The high-pressure resistant centrifugal fan impeller according to claim 1, characterized in that: Reinforcement ribs (31) are fixed to the middle portions of the first blade (3) and the second blade (5).

3. The high-pressure resistant centrifugal fan impeller according to claim 1, characterized in that: A slot (32) is provided at the top of the first blade (3) and the bottom of the second blade (5).

4. The high-pressure resistant centrifugal fan impeller according to claim 1, characterized in that: A plurality of groups of limiting grooves (11) are fixed on the top of the base (1), and the inner walls of the limiting grooves (11) fit with both sides of the first blade (3) and the second blade (5).

5. The high-pressure resistant centrifugal fan impeller according to claim 1, characterized in that: The cross section of the fixing column (12) is arranged to be a right-angled sector.

6. The high-pressure resistant centrifugal fan impeller according to claim 1, characterized in that: A connecting pipe (4) is fixed to the bottom of the base (1), and a docking port (41) is provided inside the connecting pipe (4).

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