Anti-clogging slurry pump impeller
By designing an anti-clogging impeller for the slurry pump, the problem of impeller clogging caused by bamboo nodes and other substances in the bamboo slurry was solved, achieving efficient impeller conveying and stable production load, and meeting the requirements for cooking kappa value control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU CHITIANHUA PAPERS
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-21
AI Technical Summary
During the pulping and cooking process, bamboo nodes, bamboo rings, bamboo roots, and other parts in the bamboo pulp are not easily cooked through, which leads to blockage of the impeller of the pulp pump in the screening system, resulting in insufficient pump output and reduced production capacity.
Design an anti-clogging slurry pump impeller with arc-shaped blades, spirally distributed, and gradually increasing blade thickness and height. The blade tip surface has a curved transition, and the line connecting the blade root and the edge of the impeller body is arc-shaped. There are 4 blades, the impeller diameter is 455mm, the diameter of the central through hole is 60mm, and the minimum width of the slurry channel is 80mm.
It effectively reduces impeller clogging interference, ensures production load, meets cooking kappa value control requirements, and improves production efficiency.
Smart Images
Figure CN224533063U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of slurry pump technology, specifically relating to an anti-clogging slurry pump impeller. Background Technology
[0002] For bamboo pulp, in order to maintain a high cooking yield during the pulping and cooking process, the cooking kappa value needs to be controlled at around 20 kappa. However, at this kappa value, a large number of bamboo nodes, bamboo rings, bamboo roots and other parts are not easy to cook and will enter the screening system with the coarse pulp. This will cause the impeller of the screening system's pulp pump to become clogged, resulting in insufficient pump flow and reduced production capacity. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides an anti-clogging slurry pump impeller.
[0004] The technical solution adopted by this utility model is an anti-clogging slurry pump impeller, including an impeller body with a central through hole, multiple blades evenly spaced circumferentially on the impeller body, a slurry channel formed between adjacent blades, the blades are arc-shaped and spirally distributed on the surface of the impeller body, the blade roots are connected to the edge of the impeller body, the blade tips are close to the central through hole of the impeller body, the blade thickness and height gradually increase from the blade root to the blade tip, and the minimum width of the slurry channel is 80mm.
[0005] Furthermore, the tip surface of the blade transitions from the leaf root to the leaf tip in a curved manner, and the line connecting the leaf root and the impeller body is arc-shaped.
[0006] Furthermore, the impeller body has a diameter of 455 mm, a central through hole diameter of 60 mm, and 4 blades.
[0007] Furthermore, the thickness of the leaf root is 12 mm and the thickness of the leaf tip is 10 mm.
[0008] Furthermore, the height of the leaf root is 100mm, and the height of the leaf tip is 130mm.
[0009] Compared with the prior art, the beneficial effect of this utility model is that by resetting the blades on the impeller body of the slurry pump and uniformly dividing the blades at the leading edge, it is easier to adjust the entry and conveying of large nodules contained in the coarse slurry, reduce impeller blockage interference, ensure production load, and at the same time meet the cooking kappa number control requirements. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0011] The present invention will be further explained below with reference to the accompanying drawings to enable those skilled in the art to better understand it.
[0012] Example 1 like Figure 1 As shown, an anti-clogging slurry pump impeller includes an impeller body 1 with a central through hole 101. The diameter of the impeller body 1 is 455 mm, and the diameter of the central through hole 101 is 60 mm. It is mainly used in 22300 and 221PU350 slurry pumps. The impeller body 1 has multiple blades 2 evenly spaced circumferentially, with a total of 4 blades 2. Slurry channels are formed between adjacent blades 2. A balance hole 3 is provided near the central through hole 101 in the slurry channel. When the impeller rotates, due to centrifugal force, the fluid flows from the center of the impeller to the surrounding area, resulting in uneven pressure on the front and rear cover plates of the impeller, forming an axial thrust. The balance hole connects the high-pressure side (impeller outlet) and the low-pressure side (impeller inlet) to make the pressure on both sides tend to be balanced, thereby significantly reducing the axial force. The blade 2 has an arc-shaped profile and is spirally distributed on the surface of the impeller body 1. The blade root 201 of the blade 2 is connected to the edge of the impeller body 1, and the line connecting the blade root 201 and the impeller body 1 is arc-shaped, which facilitates feeding. The blade tip 202 is close to the central through hole 101 of the impeller body 1. The tip surface of the blade 2 has a curved transition, and the blade tip 202 is circular. The thickness and height of the blade 2 gradually increase from the blade root 201 to the blade tip 202. Specifically, the blade root thickness is 12mm, the blade tip thickness is 10mm, the blade root height is 100mm, and the blade tip height is 130mm. This blade design facilitates the entry and transport of large nodules contained in the coarse pulp, reduces impeller clogging interference, ensures production load, and meets the cooking kappa number control requirements.
[0013] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from its design spirit and principles should fall within the protection scope defined by the claims of the present invention.
Claims
1. An anti-clogging slurry pump impeller, comprising an impeller body (1) having a central through hole (101), wherein the impeller body (1) is provided with a plurality of blades (2) evenly spaced circumferentially, and slurry channels are formed between adjacent blades (2), characterized in that, The blade (2) is arc-shaped and spirally distributed on the surface of the impeller body (1). The blade root (201) of the blade (2) is connected to the edge of the impeller body (1), and the blade tip (202) is close to the central through hole (101) of the impeller body (1). The thickness and height of the blade (2) gradually increase from the blade root (201) to the blade tip (202). The minimum width of the slurry channel is 80 mm.
2. The anti-clogging slurry pump impeller according to claim 1, characterized in that, The top surface of the blade (2) transitions in a curve from the blade root (201) to the blade tip (202), and the line connecting the blade root (201) and the impeller body (1) is arc-shaped.
3. The anti-clogging slurry pump impeller according to claim 1, characterized in that, The impeller body (1) has a diameter of 455 mm, the central through hole (101) has a diameter of 60 mm, and the number of blades (2) is 4.
4. The anti-clogging slurry pump impeller according to claim 1, characterized in that, The leaf root (201) of the blade (2) has a thickness of 10 mm, and the leaf tip (202) has a thickness of 12 mm.
5. The anti-clogging slurry pump impeller according to claim 1, characterized in that, The height of the leaf root (201) is 100 mm, and the height of the leaf tip (202) is 130 mm.