A spherical elbow for use in heavy medium coal preparation pipelines
By designing a spherical elbow structure and optimizing materials, the problem of severe elbow wear in heavy medium coal preparation pipelines was solved, extending the service life of the pipelines and improving the durability and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANKUANG ENERGY GRP CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-03
AI Technical Summary
The elbows in the heavy medium coal preparation pipeline are severely worn, resulting in a short service life and frequent replacements that affect production and safety.
The design incorporates a spherical elbow structure, combined with a main partition plate, a buffer plate, and side guide plates. This reduces direct wear on the elbow by the fluid through diversion and buffering, and enhances durability by utilizing carbon fiber material and corrosion-resistant paint.
It extends the service life of pipelines by 2-3 times, reduces maintenance workload, and improves equipment safety and production continuity.
Smart Images
Figure CN224454085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical engineering technology, and more specifically, to a spherical elbow for use in heavy medium coal preparation pipelines. Background Technology
[0002] In heavy media coal preparation pipelines at coal preparation plants, elbows are the fastest-wearing parts. Traditional elbows use pipe connections, achieved by bending at corresponding angles. Therefore, the surface between the inlet and outlet is the fastest-wearing component. When fluid flows through the bend, the inertial force erodes the inner surface of the elbow, causing it to wear through quickly, reducing its service life. Frequent elbow replacements are necessary in daily operations, leading to equipment downtime, impacting coal washing production, increasing maintenance workload for employees, and increasing on-site safety risks.
[0003] From an engineering perspective, this approach addresses issues related to fluid flow distribution, resistance coefficient, and appropriate sphere diameter in heavy media coal preparation. Utilizing the principle of a spherical arc surface, the direct wear of the fluid on the sphere is buffered and weakened. The direct wear on the sphere wall is caused by the vortices within the sphere, which extends pipeline lifespan and can be widely applied in heavy media transport pipelines. However, no similar structure exists in current technology.
[0004] In summary, how to provide a spherical elbow for use in heavy medium coal preparation pipelines is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the purpose of this utility model is to provide a spherical elbow for use in heavy medium coal preparation pipelines.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A spherical elbow for use in heavy medium coal preparation pipelines includes a spherical body, with main partition plates welded to the inner surfaces of the two sides in the middle of the spherical body. The main partition plates are inclined at 45 degrees to the lower outlet and the side outlet. A buffer plate is welded to the inner surface of the lower end of the spherical body, and a side guide plate is welded to the upper surface of the buffer plate. The side guide plate is inclined at 30 degrees to the buffer plate.
[0008] On the other hand, the drainage mechanism includes a support frame, a controller and a sump pump. Diversion grooves are provided on the outer surfaces of both sides of the main partition plate, and an upper return hole is provided on the outer surface of the middle of the side guide plate.
[0009] On the other hand, a lower reflux hole is provided on the outer surface of the upper middle part of the buffer plate, and a reflux groove is provided on the outer surface of the buffer plate corresponding to the bottom of the spherical body.
[0010] On the other hand, an outlet tube is welded to the side surface of the spherical body, and the central axis of the outlet tube passes through the center of the spherical body.
[0011] On the other hand, an upper connecting plate is welded to the outer surface of the outlet tube on the side away from the spherical body.
[0012] On the other hand, an inlet tube is welded to the lower surface of the spherical body.
[0013] On the other hand, a lower connecting plate is welded to the outer surface of the inlet tube on the side away from the spherical body.
[0014] On the other hand, a reinforcing ring is provided on the outer surface of the spherical body corresponding to the outlet tube, and a reinforcing ring is also provided on the outer surface of the spherical body corresponding to the inlet tube.
[0015] On the other hand, the main partition plate is made of carbon fiber, and the buffer plate is made of carbon fiber.
[0016] On the other hand, the outer surface of the spherical body is coated with anti-corrosion paint.
[0017] This utility model provides a spherical elbow for heavy medium coal preparation pipelines. By using a spherical shape as the main body of the elbow, the advantage of the spherical shape over the traditional tubular shape is that the arc-shaped inner wall effectively buffers the water flow, avoiding direct impact on easily worn parts. The service life of this type of elbow is generally 2-3 times that of a tubular elbow. Furthermore, by setting a main partition plate, a buffer plate, and a side guide plate in the middle, the main partition plate, with the assistance of the buffer plate and the side guide plate, divides the water flow at the lower inlet into two spatial positions. The space near the side outlet of the main partition plate corresponds to the space near the tubular outlet. The path is consistent, directly exiting the bend. The original easily worn tubular section is replaced by the main partition plate. When the main partition plate is impacted, the liquid introduced through the buffer plate and side guide plate at the other end is buffered upwards, increasing the area and slowing the velocity. At the same time, it provides downward pressure to the main partition plate, forming a force balance on both sides. The pressure on the inlet side of the diversion channel is always greater than that on the other side. The diversion channel facilitates flow guidance, thereby balancing the pressure on both sides. The space formed by the main partition plate, side guide plate, and buffer plate generates vortices inside the spherical body when buffered against the inner wall. The vortex speed is reduced, and the liquid flows upwards through the buffer plate and side guide plate. The reflux orifice and lower reflux orifice return the material to the inlet end. Therefore, the higher the pipeline velocity, the greater the reflux velocity, forming an adaptive buffer zone. When buffering against the inner wall of the spherical body, vortices are generated inside the sphere. The vortex speed decreases, and the material returns to the inlet end through the upper and lower reflux orifices. Thus, the higher the pipeline velocity, the greater the reflux velocity, forming an adaptive buffer zone. The reflux trough ensures that material on the inner wall of the spherical body does not accumulate in the space between the spherical body and the buffer plate, avoiding waste. The outlet pipe corresponds to the side outlet position for convenient material discharge. The upper connecting plate facilitates bolt connection. External pipe outlet, with the inlet pipe corresponding to the side inlet position for easy material introduction. The lower connecting plate facilitates bolt connection of the external pipe inlet. The reinforcing ring passes through the inlet and outlet corresponding to the spherical body, increasing welding strength and ensuring the physical pressure resistance of the connection end, thereby increasing the durability of the elbow. Carbon fiber has extremely high strength, while being relatively lightweight, high temperature resistant, corrosion resistant, and tough. It has good resilience stress in the middle of the elbow, ensuring durability. The exterior of the elbow is often affected by high temperatures and is easily accelerated to oxidation. The anti-corrosion paint can effectively isolate external oxygen and slow down the oxidation rate. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1This is a schematic diagram of the overall shape of a specific embodiment provided by this utility model;
[0020] Figure 2 This is a side view of the internal structure of a specific embodiment of the present invention;
[0021] Figure 3 A side view of the internal structure buffer of a specific embodiment provided by this utility model;
[0022] Figure 4 This is a schematic diagram illustrating the elbow connection effect of a specific embodiment of this utility model.
[0023] Figure label:
[0024] 1-Spherical main body; 2-Main partition plate; 3-Buffer plate; 4-Side guide plate; 5-Diverter channel; 6-Upper return hole; 7-Lower return hole; 8-Return channel; 9-Outlet pipe; 10-Upper connecting plate; 11-Inlet pipe; 12-Lower connecting plate; 13-Reinforcing ring. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0026] The core of this utility model is to provide a spherical elbow for use in heavy medium coal preparation pipelines, which will be discussed below. Figures 1-4 The following is a description of each part of the structure:
[0027] This spherical elbow for heavy media coal preparation pipelines includes a spherical body 1. Main partition plates 2 are welded to the inner surfaces of both sides of the spherical body 1. The main partition plates 2 are inclined at 45 degrees to the lower outlet and side outlet. A buffer plate 3 is welded to the inner surface of the lower end of the spherical body 1. A side guide plate 4 is welded to the upper surface of the buffer plate 3, and the side guide plate 4 is inclined at 30 degrees to the buffer plate 3. Specifically, a spherical shape is used as the main body shape of the elbow. The advantage of a spherical shape over a traditional tubular shape is that the arc-shaped inner wall can effectively buffer the water flow inside, avoiding direct impact on easily worn parts. The service life of the pipeline is generally longer than that of a tubular elbow. The head is 2-3 times larger. Based on this, a main partition plate 2, a buffer plate 3, and a side guide plate 4 are set in the middle. With the assistance of the buffer plate 3 and the side guide plate 4, the main partition plate 2 divides the water flow at the lower inlet into two spatial positions. The space of the main partition plate 2 that is close to the side outlet is consistent with the tubular passage and directly punches out of the bend. The original tubular wear-prone position is replaced by the main partition plate 2. When the main partition plate 2 is impacted, the liquid introduced through the buffer plate 3 and the side guide plate 4 at the other end is buffered upward, the area becomes larger, the speed becomes slower, and at the same time, it provides downward pressure to the main partition plate 2, forming a force balance on the main partition plate 2 on both sides.
[0028] The main partition plate 2 has flow diversion grooves 5 on both outer surfaces, and the side guide plate 4 has an upper return hole 6 on the middle outer surface. Specifically, the pressure on the inlet side of the flow diversion groove 5 is always greater than that on the other side. By setting the flow diversion groove 5, the flow can be easily guided, thereby balancing the pressure on both sides. The space formed by the main partition plate 2, the side guide plate 4, and the buffer plate 3 generates vortices inside the sphere when it buffers against the inner wall of the spherical body 1. The rotation speed of the vortex decreases, and it flows back to the inlet end through the upper return hole 6 and the lower return hole 7. Thus, the greater the speed of the pipeline, the greater the return speed, so as to form an adaptive buffer zone.
[0029] The buffer plate 3 has a lower return hole 7 on its outer surface in the middle, and a return groove 8 is provided on the outer surface of the buffer plate 3 corresponding to the bottom of the spherical body 1. When buffering against the inner wall of the spherical body 1, a vortex is generated inside the sphere. The rotation speed of the vortex decreases and flows back to the inlet end through the upper return hole 6 and the lower return hole 7. As a result, the higher the speed of the pipeline, the higher the return speed is, so as to form an adaptive buffer zone. The return groove 8 ensures that the material on the inner wall of the spherical body 1 will not accumulate in the space between the spherical body 1 and the buffer plate 3, thus avoiding waste.
[0030] A discharge pipe 9 is welded to the side surface of the spherical body 1. The central axis of the discharge pipe 9 passes through the center of the spherical body 1. Specifically, the discharge pipe 9 corresponds to the side outlet position, which facilitates the discharge of materials.
[0031] The outer surface of the outlet pipe 9 away from the spherical body 1 is welded with an upper connecting plate 10; specifically, the upper connecting plate 10 facilitates bolt connection of the external pipe outlet.
[0032] An inlet pipe 11 is welded to the lower surface of the spherical body 1. The central axis of the inlet pipe 11 passes through the center of the spherical body 1. Specifically, the inlet pipe 11 corresponds to the side inlet position to facilitate the introduction of materials. The central axis of the inlet pipe 11 passing through the center of the spherical body 1 ensures that the spherical elbow is in the center position in the pipeline, thereby ensuring uniform force and increasing durability.
[0033] The outer surface of the inlet tube 11 away from the spherical body 1 is welded with a lower connecting plate 12; specifically, the lower connecting plate 12 facilitates the bolt connection of the external pipe for inlet.
[0034] A reinforcing ring 13 is provided on the outer surface between the spherical body 1 and the outlet pipe 9, and a reinforcing ring 13 is also provided on the outer surface between the spherical body 1 and the inlet pipe 11. Specifically, the reinforcing ring 13 passes through the outlet and inlet of the spherical body 1 to increase the welding strength, ensure the physical pressure resistance of the connection end, and thus increase the durability of the elbow.
[0035] The main partition plate 2 is made of carbon fiber, and the buffer plate 3 is also made of carbon fiber. Specifically, carbon fiber has extremely high strength, while being relatively lightweight, resistant to high temperatures and corrosion, and has good toughness. It also has good rebound stress in the middle of the bend, ensuring durability.
[0036] The outer surface of the spherical body 1 is coated with anti-corrosion paint; specifically, the outside of the elbow is often affected by high temperature, which is easily accelerated oxidation. The anti-corrosion paint can effectively isolate external oxygen and slow down the oxidation rate.
[0037] In summary: This design uses a spherical shape as the main body of the elbow. The advantage of a spherical shape over the traditional tubular shape is that the curved inner wall effectively buffers the water flow, preventing direct impact on easily worn parts. The service life of this type of elbow is generally 2-3 times that of a tubular elbow. Furthermore, by installing a main partition plate 2, a buffer plate 3, and a side guide plate 4 in the middle, the main partition plate 2, with the assistance of the buffer plate 3 and the side guide plate 4, divides the water flow from the lower inlet into two spatial positions. The space near the side outlet of the main partition plate 2 is consistent with the tubular passage, allowing the water to flow directly out of the elbow. The original easily worn parts of the tubular section are replaced by the main partition plate 2. When the main partition plate 2 is impacted... The liquid introduced through the buffer plate 3 and side guide plate 4 at the other end is buffered upwards, increasing the area and slowing down the rate. At the same time, it provides downward pressure to the main partition plate 2, forming a force balance on the main partition plate 2 on both sides. The space formed by the main partition plate 2, side guide plate 4, and buffer plate 3 generates vortices inside the sphere when buffering towards the inner wall of the spherical body 1. The rotation speed of the vortex decreases, and it flows back to the inlet end through the upper return hole 6 and lower return hole 7. Therefore, the greater the rate of the pipeline, the greater the return rate, so as to form an adaptive buffer zone. The return trough 8 ensures that the material on the inner wall of the spherical body 1 will not accumulate in the space between the spherical body 1 and the buffer plate 3, avoiding waste.
[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0039] The above provides a detailed description of a spherical elbow for use in heavy media coal preparation pipelines according to this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. A spherical bend for use in a dense medium coal separation pipeline, characterised in that, It includes a spherical body (1), with a main partition plate (2) welded to the inner surfaces of the two sides in the middle of the spherical body (1). The main partition plate (2) is inclined at 45 degrees between the lower outlet and the side outlet. A buffer plate (3) is welded to the inner surface of the lower side of the spherical body (1). A side guide plate (4) is welded to the upper surface of the buffer plate (3). The side guide plate (4) is inclined at 30 degrees between the buffer plate (3) and the buffer plate (3).
2. A spherical bend for use in a dense medium coal separation pipeline according to claim 1, characterised in that, The main partition plate (2) has flow channels (5) on both outer surfaces, and the side guide plate (4) has an upper return hole (6) on the middle outer surface.
3. A spherical bend for use in a dense medium coal separation pipeline according to claim 1, characterised in that, The buffer plate (3) has a lower return hole (7) on the upper middle outer surface, and a return groove (8) is provided on the outer surface of the buffer plate (3) corresponding to the bottom of the spherical body (1).
4. A spherical bend for use in a dense medium coal separation pipeline according to claim 1, characterised in that, The spherical body (1) has an outlet tube (9) welded to its side surface, and the central axis of the outlet tube (9) passes through the center of the spherical body (1).
5. A ball bend for use in a dense medium coal separation pipeline according to claim 4, characterised in that, The outer surface of the outlet tube (9) away from the spherical body (1) is welded with an upper connecting plate (10).
6. A spherical elbow for use in heavy medium coal preparation pipelines according to claim 1, characterized in that, The lower surface of the spherical body (1) is welded with an inlet tube (11), and the central axis of the inlet tube (11) passes through the center of the spherical body (1).
7. A ball bend for use in a dense medium coal separation pipeline according to claim 6, characterised in that, The inlet tube (11) has a lower connecting plate (12) welded to the outer surface of the side away from the spherical body (1).
8. A spherical bend for use in a dense medium coal separation pipeline according to claim 1, characterised in that, A reinforcing ring (13) is provided on the outer surface between the spherical body (1) and the outlet tube (9), and a reinforcing ring (13) is also provided on the outer surface between the spherical body (1) and the inlet tube (11).
9. A spherical bend for use in a dense medium coal separation pipeline according to claim 1, characterised in that, The main partition plate (2) is made of carbon fiber, and the buffer plate (3) is made of carbon fiber.
10. A spherical elbow for use in heavy medium coal preparation pipelines according to claim 1, characterized in that, The outer surface of the spherical body (1) is coated with anti-corrosion paint.