Hollow wear-resistant spiral blade of centrifugal machine
By designing hollow wear-resistant spiral blades, the problem of replacing the spiral blades as a whole is solved, and individual disassembly and replacement are achieved, which reduces costs and improves the sedimentation efficiency and solid phase recovery rate of the centrifuge.
Patent Information
- Application Number
- CN202422675923.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-04
AI Technical Summary
The spiral blades of the existing horizontal spiral decanter centrifuge are of an integrated structure, which means that when a single blade is damaged, it needs to be replaced as a whole, increasing the cost of maintenance and replacement.
The hollow wear-resistant spiral blade is designed and includes a first spiral blade and a second spiral blade, which are connected by bolts, allowing damaged blades to be removed and replaced separately.
The maintenance and replacement costs of spiral blades are reduced, and the sedimentation capacity and solid phase recovery rate of the centrifuge are improved.
Smart Images
Figure CN223367203U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spiral blades, in particular to a hollow wear-resistant spiral blade for a centrifuge. Background Art
[0002] Horizontal spiral decanter centrifuge is referred to as horizontal spiral centrifuge. It is a high-efficiency centrifugal separation equipment. Horizontal spiral centrifuge can generally be divided into horizontal spiral filtering centrifuge and horizontal spiral decanter centrifuge. Horizontal spiral centrifuge is a horizontal spiral unloading and continuously operated sedimentation equipment. It can continuously feed, separate, wash and unload at full speed. It has the characteristics of compact structure, continuous operation, stable operation, strong adaptability, large production capacity and easy maintenance.
[0003] The horizontal spiral decanter centrifuge is mainly composed of a high-speed drum, a spiral with the same rotation direction as the drum and a slightly higher or lower speed than the drum, and a differential. When the suspension to be separated enters the centrifuge drum, the high-speed rotating drum generates a strong centrifugal force to sediment the solid particles with a density greater than the liquid phase to the inner wall of the drum. Due to the different speeds of the spiral and the drum, there is relative motion between the two. The relative motion of the spiral and the drum is used to push the solid phase deposited on the inner wall of the drum to the outlet at the small end of the drum for discharge. The separated clear liquid is discharged from the liquid outlet at the other end of the centrifuge.
[0004] At present, the spiral blades arranged inside the horizontal spiral sedimentation centrifuge are generally of an integrally connected type. Since the spiral blades are easily damaged after long-term use, and since the spiral blades include a multi-blade structure, when one of the blades is damaged, the spiral blades are an integrated structure and the staff cannot disassemble and replace the single blade. Usually, the entire blade needs to be replaced, which makes the cost of repairing and replacing the spiral blades high when damaged, increasing the economic losses of the factory. Utility Model Content
[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a hollow wear-resistant spiral blade for a centrifuge, which can solve the problem that due to the spiral blade being an integrated structure, workers are unable to disassemble and replace a single blade and usually need to replace it as a whole, which makes the cost of repairing and replacing the spiral blade high when it is damaged, thereby increasing the economic losses of the factory.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hollow wear-resistant spiral blade of a centrifuge, comprising a centrifuge and a spiral blade fixing device; a feed pipe is rotatably connected to the inside of the centrifuge, and a mounting slot is provided on the surface of the feed pipe; the spiral blade fixing device comprises a first spiral blade, a second spiral blade, a fixing block and a bolt, the first spiral blade and the second spiral blade are both slidably mounted inside the mounting slot, the fixing block is fixedly connected to the surface of the first spiral blade, the bolt is installed inside the fixing block, and a positioning groove is provided on the surface of the second spiral blade.
[0007] Preferably, the left end of the centrifuge is fixedly connected with a liquid phase outlet, and the right end of the centrifuge is fixedly installed with a heavy liquid phase outlet.
[0008] Preferably, a discharge port is provided on the surface of the feed pipe.
[0009] Preferably, the surface of the fixed block is slidably connected to the interior of the positioning groove.
[0010] Preferably, a bolt slot is provided on the surface of the second spiral blade, and the bolt thread is installed inside the bolt slot.
[0011] Preferably, the surfaces of the first spiral blade and the second spiral blade are both provided with hollow circular holes.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. The hollow wear-resistant spiral blade of the centrifuge is configured as a two-part structure consisting of a first spiral blade and a second spiral blade. When one of the blades is damaged, the staff can disassemble and replace the first spiral blade and the second spiral blade separately without having to replace the entire blade, thereby reducing the cost of repairing and replacing the spiral blades and minimizing the economic losses of the factory. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0015] Figure 1 This is a schematic diagram of the overall structure of a hollow wear-resistant spiral blade of a centrifuge in the utility model;
[0016] Figure 2 This is a schematic diagram of the left end structure of a hollow wear-resistant spiral blade of a centrifuge in the utility model;
[0017] Figure 3 This is a schematic diagram of the internal structure of the centrifuge of the utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the first spiral blade and the second spiral blade after being separated.
[0019] Figure numerals: 1, centrifuge; 2, liquid phase outlet; 3, heavy liquid phase outlet; 4, feed pipe; 5, mounting slot; 6, discharge port; 7, first spiral blade; 8, second spiral blade; 9, fixing block; 10, bolt; 11, positioning groove; 12, bolt notch; 13, hollow circular hole. DETAILED DESCRIPTION
[0020] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.
[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0022] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.
[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0024] See also Figure 1-4The utility model provides a technical solution: a hollow wear-resistant spiral blade of a centrifuge, comprising a centrifuge 1 and a spiral blade fixing device, the left end of the centrifuge 1 is fixedly connected to a liquid phase outlet 2, the right end of the centrifuge 1 is fixedly installed with a heavy liquid phase outlet 3, the inside of the centrifuge 1 is rotatably connected to a feed pipe 4, the surface of the feed pipe 4 is provided with a mounting slot 5, the surface of the feed pipe 4 is provided with a discharge port 6, the spiral blade fixing device comprises a first spiral blade 7, a second spiral blade 8, a fixed clamping block 9 and a bolt 10, the first spiral blade 7 and the second spiral blade 8 are both slidably mounted on the inside of the mounting slot 5, the fixed clamping block 9 is fixedly connected to the surface of the first spiral blade 7, the bolt 10 is installed on the inside of the fixed clamping block 9, the surface of the second spiral blade 8 is provided with a positioning groove 11, the surface of the fixed clamping block 9 is slidably connected to the inside of the positioning groove 11, the surface of the second spiral blade 8 is provided with a bolt notch 12, and the bolt 10 is threadedly mounted on the inside of the bolt notch 12.
[0025] When the first spiral blade 7 and the second spiral blade 8 are damaged after long-term use and need to be replaced, the staff can rotate the bolt 10 with a wrench, and the bolt 10 rotates and moves out of the bolt slot 12, thereby releasing the fixing effect on the second spiral blade 8. Then, the staff slides the first spiral blade 7 to the front side, and the first spiral blade 7 slides to the front side and drives the fixing block 9 to slide to the front side and move out of the positioning groove 11. The first spiral blade 7 slides to the front side and disengages from the inside of the mounting slot 5. The staff slides the second spiral blade 8 to the rear side, and the second spiral blade 8 slides to the rear side and moves out of the inside of the mounting slot 5 to complete the disassembly. By setting the spiral blade as a two-part structure of the first spiral blade 7 and the second spiral blade 8, when one of the blades is damaged, the staff can disassemble and replace the first spiral blade 7 and the second spiral blade 8 separately, and no longer need to replace them as a whole, thereby reducing the cost of spiral blade maintenance and replacement, and reducing the economic losses of the factory.
[0026] Hollow circular holes 13 are formed on the surfaces of the first spiral blade 7 and the second spiral blade 8 .
[0027] By providing the hollow circular hole 13, part of the clear liquid can directly pass through the spiral blade through the hollow circular hole 13 and flow along the axial direction of the drum, so that the flow velocity is reduced to one third of the original, thereby reducing the disturbance effect of the liquid flow on the solid phase sedimentation and improving the sedimentation capacity of the centrifuge. The solid phase below four-fifths of the liquid pool depth is more likely to settle due to the reduced flow rate of the fluid, and the recovery rate of the solid phase is higher under the action of the spiral pusher.
[0028] Working principle: The hollow wear-resistant spiral blade of the centrifuge can be rotated by the staff with a wrench. The bolt 10 rotates and moves out of the bolt slot 12, thereby releasing the fixing effect on the second spiral blade 8. Then, the staff slides the first spiral blade 7 forward, and the first spiral blade 7 slides forward and drives the fixed block 9 to slide forward and move out of the positioning groove 11. The first spiral blade 7 slides forward and disengages from the inside of the mounting slot 5. The staff slides the second spiral blade 8 backward, and the second spiral blade 8 slides backward and moves out of the inside of the mounting slot 5 to complete the disassembly. By setting the spiral blade as a two-part structure consisting of the first spiral blade 7 and the second spiral blade 8, the staff no longer needs to replace it as a whole. At this time, the first spiral blade 7 and the second spiral blade 8 can be disassembled and replaced separately, reducing the cost of repairing and replacing the spiral blade when it is damaged. By providing the hollow circular hole 13, part of the clear liquid can pass through the hollow circular hole 13 directly through the spiral blade and flow along the axial direction of the drum, reducing the flow rate to one-third of the original, thereby reducing the disturbance effect of liquid flow on solid phase sedimentation and improving the sedimentation capacity of the centrifuge.
[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A hollow wear-resistant spiral blade for a centrifuge, characterized in that: include: Centrifuge (1) and spiral blade fixing device; A feed pipe (4) is rotatably connected to the interior of the centrifuge (1), and a mounting slot (5) is provided on the surface of the feed pipe (4); The spiral blade fixing device comprises a first spiral blade (7), a second spiral blade (8), a fixing block (9) and a bolt (10); the first spiral blade (7) and the second spiral blade (8) are both slidably mounted inside the mounting slot (5); the fixing block (9) is fixedly connected to the surface of the first spiral blade (7); the bolt (10) is mounted inside the fixing block (9); and a positioning groove (11) is provided on the surface of the second spiral blade (8).
2. The hollow wear-resistant spiral blade of a centrifuge according to claim 1, characterized in that: The left end of the centrifuge (1) is fixedly connected with a liquid phase outlet (2), and the right end of the centrifuge (1) is fixedly installed with a heavy liquid phase outlet (3).
3. The hollow wear-resistant spiral blade of a centrifuge according to claim 1, characterized in that: A discharge port (6) is provided on the surface of the feed pipe (4).
4. The hollow wear-resistant spiral blade of a centrifuge according to claim 1, characterized in that: The surface of the fixed block (9) is slidably connected to the interior of the positioning groove (11).
5. The hollow wear-resistant spiral blade of a centrifuge according to claim 1, characterized in that: A bolt notch (12) is provided on the surface of the second spiral blade (8), and a bolt (10) is threadedly installed inside the bolt notch (12).
6. The hollow wear-resistant spiral blade of a centrifuge according to claim 1, characterized in that: Hollow circular holes (13) are provided on the surfaces of the first spiral blade (7) and the second spiral blade (8).