An anti-clogging structure for centrifuge discharge
By using guide liner and scraper structure in horizontal screw discharge sedimentation centrifuge, the problems of material caking and clogging in high-salt wastewater treatment are solved, achieving stable and efficient discharge and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川永祥树脂有限公司
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing horizontal screw discharge sedimentation centrifuges suffer from problems such as material caking, frequent blockage of the chamber, and shortened equipment life when treating high-salt wastewater.
The first to third guide plates form an annular collection trough, which, together with the scraper and opening adjustment mechanism, prevents material accumulation and enables timely discharge, reducing wear and blockage.
It improves the continuity of centrifuge operation and production efficiency, reduces maintenance costs, and extends equipment lifespan.
Smart Images
Figure CN224271547U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of centrifuge technology, specifically to an anti-clogging structure for centrifuge discharge. Background Technology
[0002] The horizontal screw discharge sedimentation centrifuge mainly consists of a high-speed rotating drum, a screw rotating in the same direction as the drum but at a slightly higher or lower speed, and a differential gear. When the suspension to be separated enters the centrifuge drum, the high-speed rotating drum generates a strong centrifugal force that causes solid particles with a density greater than the liquid phase to settle onto the inner wall of the drum. Due to the different speeds of the screw and the drum, there is relative motion between them (i.e., speed difference). This relative motion pushes the solid phase deposited on the inner wall of the drum toward the discharge port at the smaller end of the drum, and the separated clear liquid is discharged from the other end of the centrifuge.
[0003] Currently, existing horizontal screw discharge sedimentation centrifuges have the following problems when treating high-salinity wastewater:
[0004] 1. The material clumps together.
[0005] Salt crystals and sticky materials (i.e., salt mud) in high-salt wastewater tend to adhere to and accumulate in the discharge chamber between the drum outlet and the machine cover under centrifugal force, and then harden into lumps. The scraper that rotates synchronously with the drum is too far away to completely remove them, so frequent machine stops are required for manual cleaning, which consumes a lot of manpower and increases maintenance costs.
[0006] 2. Frequent blockage of the cavity
[0007] The discharge chamber is easily clogged by high-speed splashing materials, requiring the machine to be stopped 3 to 4 times per shift for unblocking. This increases downtime and limits the processing capacity per shift, severely impacting production efficiency.
[0008] 3. Shortened equipment lifespan
[0009] Hardened material buildup leads to increased wear on the drum and scraper, shortening the centrifuge's lifespan. Utility Model Content
[0010] To address the shortcomings of existing technologies, this utility model provides an anti-clogging structure for centrifuge discharge, which solves the problems of material caking, frequent cavity blockage, and shortened equipment lifespan in existing horizontal screw discharge sedimentation centrifuges when treating high-salt wastewater.
[0011] To achieve the above objectives, the present invention provides the following technical solution:
[0012] A centrifuge discharge anti-clogging structure includes:
[0013] The first guide plate is in the shape of a large arc and is located inside the lower cover of the centrifuge on the left side.
[0014] The second guide plate, in a semi-circular shape, is located inside the upper casing of the centrifuge; and
[0015] The third guide plate, which is in the shape of a small arc, is located inside the lower cover of the centrifuge on the right side.
[0016] The first to third guide liner plates have equal radii and are concentrically located around the drum of the centrifuge to form an annular collection trough with a discharge port, which is located between the first and third guide liner plates. Under the action of the scraper that rotates synchronously with the drum, the material collected in the annular collection trough can be discharged from the discharge port.
[0017] In one embodiment disclosed in this application, the scraper is connected to the rotating drum by screws;
[0018] The gap between the blade of the scraper and the inner sidewall of the first to third guide liner plates is ≤3mm.
[0019] In one embodiment disclosed in this application, a removable gasket is provided between the scraper and the drum to adjust the gap between the cutting edge of the scraper and the inner sidewall of the first to third guide liner plates.
[0020] In one embodiment disclosed in this application, the scraper circumferential array consists of two pieces, which are spaced 180° apart from each other.
[0021] In one embodiment disclosed in this application, a fourth flow guide plate is connected to the lower right side of the third flow guide plate;
[0022] The fourth guide liner is arc-shaped with its convex surface facing the outlet of the annular collection trough, and is used to guide the material to be discharged by its own weight.
[0023] In one embodiment disclosed in this application, the first flow guide plate, the third flow guide plate, and the fourth flow guide plate are respectively welded to the inside of the lower casing;
[0024] The second flow guide liner is welded to the inside of the upper cover.
[0025] In one embodiment disclosed in this application, an opening adjustment mechanism is further included for adjusting the opening of the annular material trough outlet.
[0026] In one embodiment disclosed in this application, the opening adjustment mechanism includes a rack, a gear, and a servo motor connected in sequence;
[0027] The rack is arc-shaped and is slidably connected to the first guide plate.
[0028] The servo motor is fixedly installed on the outside of the lower cover and electrically connected to the centrifuge.
[0029] Compared with the prior art, the beneficial effects of this utility model are:
[0030] 1. The first to third guide plates intercept and collect materials in the annular collection trough, while the scraper cleans and discharges them promptly, preventing material accumulation and caking. This allows the centrifuge to stably and efficiently treat high-salt wastewater, significantly enhancing the centrifuge's continuous operation and improving production efficiency. Furthermore, the frequency of manual cleaning is greatly reduced, minimizing production interruptions caused by material blockages and lowering maintenance costs. Additionally, reduced wear on the drum and scraper improves durability, decreases the frequency of malfunctions, and extends the centrifuge's service life.
[0031] 2. During the rotation of the drum, a thin layer of material can be retained between the scraper and the first to third guide liners. This thin layer of material can not only reduce the probability of subsequent material accumulation and caking, but also effectively protect the first to third guide liners to reduce wear, thereby ensuring the structural stability of the annular collection trough and further extending the service life of the centrifuge.
[0032] 3. The opening adjustment mechanism can automatically adjust the opening of the annular material trough outlet to achieve precise control of material discharge. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the structure of this utility model;
[0035] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle. Detailed Implementation
[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0041] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.
[0042] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0043] See Figure 1 and Figure 2 As shown, this utility model provides an anti-clogging structure 200 for centrifuge discharge, comprising:
[0044] The first guide plate 210 is in the shape of a large arc and is located on the left side inside the lower cover 120 of the centrifuge 100.
[0045] The second guide plate 220 is semi-circular and is located inside the upper casing 110 of the centrifuge 100; and
[0046] The third guide plate 230 is in the shape of a small arc and is located inside the lower cover 120 of the centrifuge 100 on the right side.
[0047] The first to third guide liner plates have equal radii and are concentrically located around the drum 130 of the centrifuge 100 to form an annular collection trough with a discharge port. The discharge port is located between the first guide liner plate 210 and the third guide liner plate 230. Under the action of the scraper 140, which rotates synchronously with the drum 130, the material collected in the annular collection trough can be discharged from the discharge port.
[0048] Specifically, the first to third guide liner plates cover the rotating drum 130, forming a baffle wall between the upper cover 110, the lower cover 120, and the rotating drum 130. During the treatment of high-salt wastewater by the centrifuge 100, the salt sludge is intercepted by the baffle wall under the centrifugal force of the rotating drum 130 and collected by the annular collection trough without splashing onto the upper cover 110 and the lower cover 120. At the same time, the scraper 140, which rotates synchronously with the rotating drum 130, scrapes the inner walls of the first to third guide liner plates, thereby timely discharging the material collected in the annular collection trough from the discharge port, thus preventing material accumulation and blockage. After production verification, after installing the first to third guide liner plates, the frequency of centrifuge 100 shutdown for cleaning has been reduced from the current 3-4 times per shift to 2 times per month, reducing manual cleaning costs by 50% and extending the service life of centrifuge 100 by 20%-30%. In other words, the material is intercepted and collected in the annular collection trough by the first to third guide plates, and then promptly discharged by the scraper 140. The material does not accumulate or clump, enabling the centrifuge 100 to stably and efficiently treat high-salt wastewater. The centrifuge 100 also significantly enhances its continuous operation, improving production efficiency. In addition, the frequency of manual cleaning is greatly reduced, minimizing production interruptions caused by material blockage and lowering maintenance costs. Furthermore, the wear on the drum 130 and scraper 140 is reduced, improving durability and reducing the frequency of failures, thereby extending the service life of the centrifuge 100.
[0049] The scraper 140 is connected to the drum 130 by screws, and the gap between the cutting edge of the scraper 140 and the inner sidewall of the first to third guide liners is ≤3mm. Thus, during the rotation of the drum 130, a thin layer of material can be retained between the scraper 140 and the first to third guide liners. This thin layer not only reduces the probability of subsequent material accumulation and caking, but also effectively protects the first to third guide liners to reduce wear, thereby ensuring the structural stability of the annular collection trough and further extending the service life of the centrifuge 100.
[0050] A removable shim (not shown in the figure) is provided between the scraper 140 and the drum 130 to adjust the gap between the cutting edge of the scraper 140 and the inner wall of the first to third guide liner plates. After the centrifuge 100 has been running for a period of time, the scraper 140 will show a certain degree of wear that does not affect its continued use. At this time, a shim of different thickness can be replaced to raise the scraper 140 so that the gap between its cutting edge and the inner wall of the first to third guide liner plates is kept within a suitable range (i.e., ≤3mm).
[0051] In this embodiment, there are two scrapers arranged in a circumferential array, spaced 180° apart from each other.
[0052] A fourth guide plate 240 is connected to the lower right of the third guide plate 230. The fourth guide plate 240 is arc-shaped, with its convex surface facing the outlet of the annular collection trough, and is used to guide the material to be discharged by its own weight. The material collected in the annular collection trough at the third guide plate 230 will flow along the convex surface of the fourth guide plate 240 in a direction gradually away from the annular collection trough under the guidance of the fourth guide plate 240 and under its own weight, and finally fall into the hopper (not shown in the figure) connected to the lower cover 120 below the centrifuge 100, thereby realizing gravity discharge.
[0053] The first guide plate 210, the third guide plate 230, and the fourth guide plate 240 are welded to the inside of the lower housing 120, and the second guide plate 220 is welded to the inside of the upper housing 110. Welding allows for the fixed installation of the first to fourth guide plates.
[0054] The aforementioned anti-clogging structure 200 for centrifuge discharge also includes an opening adjustment mechanism 250 for adjusting the opening of the annular material collection trough discharge port. Specifically, the opening adjustment mechanism 250 includes a rack 251, a gear 252, and a servo motor (not shown in the figure) connected in sequence. The rack 251 is arc-shaped and is slidably connected to the first guide plate 210. The servo motor is fixedly installed on the outside of the lower cover 120 (its output shaft extends into the lower cover 120 and is fixedly connected to the gear 252) and is electrically connected to the centrifuge 100. When the centrifuge 100 is under heavy load, it indicates a large amount of material. In this case, the servo motor drives the gear 252 to rotate, causing the rack 251 to slide along the first guide liner 210 away from the third guide liner 230, thus increasing the opening of the annular material collection trough's outlet. This allows the material to be discharged promptly without accumulation. Conversely, when the centrifuge 100 is under light load, it indicates a small amount of material. In this case, the servo motor drives the gear 252 to rotate, causing the rack 251 to slide along the first guide liner 210 towards the third guide liner 230, thus decreasing the opening of the annular material collection trough's outlet. This reduces the likelihood of material splashing into the lower casing 120 without affecting material discharge, ensuring all material falls into the hopper. In other words, the opening adjustment mechanism 250 automatically adjusts the opening of the annular material collection trough's outlet, achieving precise control of the discharge.
[0055] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A centrifuge discharge anti-clogging structure, characterized in that, include: The first guide plate is in the shape of a large arc and is located inside the lower cover of the centrifuge on the left side. The second guide plate, in a semi-circular shape, is located inside the upper casing of the centrifuge; and The third guide plate, which is in the shape of a small arc, is located inside the lower cover of the centrifuge on the right side. The first to third guide liner plates have equal radii and are concentrically located around the drum of the centrifuge to form an annular collection trough with a discharge port, which is located between the first and third guide liner plates. Under the action of the scraper that rotates synchronously with the drum, the material collected in the annular collection trough can be discharged from the discharge port.
2. The anti-clogging structure for centrifuge discharge according to claim 1, characterized in that: The scraper is connected to the rotating drum by screws; The gap between the blade of the scraper and the inner sidewall of the first to third guide liner plates is ≤3mm.
3. The anti-clogging structure for centrifuge discharge according to claim 2, characterized in that, A removable gasket is provided between the scraper and the drum to adjust the gap between the cutting edge of the scraper and the inner sidewall of the first to third flow guide plates.
4. The anti-clogging structure for centrifuge discharge according to any one of claims 1 to 3, characterized in that, The scraper array consists of two pieces, spaced 180° apart.
5. The anti-clogging structure for centrifuge discharge according to claim 1, characterized in that: A fourth flow guide plate is connected to the lower right side of the third flow guide plate; The fourth guide liner is arc-shaped with its convex surface facing the outlet of the annular collection trough, and is used to guide the material to be discharged by its own weight.
6. The anti-clogging structure for centrifuge discharge according to claim 5, characterized in that: The first flow guide plate, the third flow guide plate, and the fourth flow guide plate are respectively welded to the inside of the lower shroud; The second flow guide liner is welded to the inside of the upper cover.
7. The anti-clogging structure for centrifuge discharge according to claim 1 or 6, characterized in that, It also includes an opening adjustment mechanism for adjusting the opening of the annular material trough outlet.
8. The anti-clogging structure for centrifuge discharge according to claim 7, characterized in that: The opening adjustment mechanism includes a rack, a gear, and a servo motor connected in sequence. The rack is arc-shaped and is slidably connected to the first guide plate. The servo motor is fixedly installed on the outside of the lower cover and electrically connected to the centrifuge.