Piston disc protection structure and disc separator
By installing wear-resistant rings on the piston disc of the disc separator, the problem of mechanical damage to the piston disc under high-pressure water pressure is solved, thereby achieving stable operation of the equipment and reducing maintenance costs.
Patent Information
- Application Number
- CN202422661654.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The impact generated when the piston disc of the disc separator closes under high-pressure water is significant, leading to irreversible mechanical damage and affecting the sealing effect and equipment stability.
Wear rings are installed on the piston disc, and the wear rings are sealed by contacting the sealing ring at the bottom of the upper drum. They withstand the impact when closing, avoid direct damage to the piston disc, and the wear rings can be replaced periodically to reduce maintenance costs.
It effectively protects the piston disc, ensuring a good seal while reducing maintenance costs and time, and improving the stability and continuous operation capability of the equipment.
Smart Images
Figure CN223475248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disc separators, specifically to a piston disc protection structure and a disc separator. Background Technology
[0002] Disc centrifuges are a type of sedimentation centrifuge used to separate materials that are difficult to separate (such as suspensions of viscous liquids and fine solid particles, or emulsions of liquids with similar densities).
[0003] Disc separators can quickly and continuously separate solids from liquids or liquids from liquids. The drum is located at the top of a vertical shaft and is driven by a motor to rotate at high speed. A very small gap exists between the discs. The suspension (or emulsion) is added to the drum through a feed pipe located at the center. As the suspension (or emulsion) flows through the gaps between the discs, solid particles (or droplets) settle onto the discs under centrifugal force, forming sediment (or a liquid layer). The sediment slides along the disc surface, detaches from the discs, and accumulates at the largest diameter part inside the drum. The separated liquid is discharged from the drum through the outlet.
[0004] When separating materials, the disc separator first injects high-pressure water to lift the piston disc and move it up until it contacts the upper drum for sealing. Due to the high pressure of the high-pressure water, the impact generated at the moment the piston disc closes is large, which will cause irreversible mechanical damage to the upper surface of the piston disc. Over time, this may lead to inadequate sealing. Utility Model Content
[0005] The present invention aims to provide a piston disc protection structure to solve the problem that the existing disc separator, due to the high pressure of the high-pressure water, generates a large impact at the moment the piston disc closes, which causes irreversible mechanical damage to the upper surface of the piston disc.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a piston disc protection structure, including a piston disc, the piston disc being a cone-shaped cylinder with the opening facing upwards, a wear-resistant ring being fixedly connected to the top of the piston disc, an upper rotating drum being provided above the piston disc, a sealing ring being installed at the bottom of the upper rotating drum, and the wear-resistant ring and the sealing ring being vertically aligned.
[0007] Preferably, as an improvement, the wear-resistant ring includes a flange ring, on which an annular wear-resistant rib is integrally formed. The wear-resistant rib has the same inner diameter as the flange ring, and the flange ring is detachably connected to the piston disc.
[0008] Preferably, as an improvement, the flange is connected to the top end face of the piston disc by countersunk screws, and the inner diameter of the flange is the same as the inner diameter of the top of the piston disc.
[0009] Preferably, as an improvement, the width of the wear-resistant rib is less than or equal to the width of the sealing ring.
[0010] The principle and advantages of this solution are as follows: In practical applications, after high-pressure water is injected into the disc separator, the piston disc moves upward until it contacts the wear-resistant ring and the sealing ring at the bottom of the upper drum to complete the seal. By setting a wear-resistant ring on the piston disc, the contact point with the upper drum changes from the original piston disc to the wear-resistant ring. The impact generated during closure is absorbed by the wear-resistant ring, preventing direct impact and damage to the piston disc during the closure process, thus effectively protecting the piston disc. The impact during closure is unavoidable, and the wear-resistant ring can be replaced after a period of use. Due to the high machining precision and difficulty of the piston disc, repair and replacement after damage are time-consuming and resource-intensive. This solution significantly reduces the labor and material costs associated with piston ring maintenance and replacement.
[0011] A disc separator includes an upper rotating drum and a piston disc, and a piston disc protection structure as described above is used on the piston disc.
[0012] After high-pressure water is injected into this disc separator, the piston disc moves up until the wear ring contacts the sealing ring at the bottom of the upper drum to complete the seal. The impact generated by the closure is absorbed by the wear ring, which can be replaced periodically to prevent the piston disc from being damaged by impact. As long as the wear ring is replaced in time, the disc separator can work continuously, stably and reliably for a long time. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the wear-resistant ring in Embodiment 1 of this utility model.
[0014] Figure 2 This is a partial structural diagram of Embodiment 2 of the present invention. Detailed Implementation
[0015] The following detailed description illustrates the specific implementation method:
[0016] The reference numerals in the accompanying drawings of the instruction manual include: upper drum 1, piston disc 2, wear-resistant ring 3, flange ring 31, wear-resistant rib 32, sealing ring 4, slag discharge port 5, and countersunk screw 6.
[0017] Example 1: A piston disc protection structure includes a piston disc 2, which is a conical cylinder with its opening facing upwards. A wear-resistant ring 3 is fixedly connected to the top of the piston disc 2, as shown in the attached figure. Figure 1As shown, the wear-resistant ring 3 includes a flange ring 31, on which an annular wear-resistant rib 32 is integrally formed. The wear-resistant rib 32 has the same inner diameter as the flange ring 31, and the inner diameter of the flange ring 31 is the same as the inner diameter of the top end of the piston disc 2. The flange ring 31 is detachably connected to the top end face of the piston disc 2 by countersunk screws 6. An upper drum 1 is provided above the piston disc 2, and a sealing ring 4 is installed at the bottom end of the upper drum 1. The wear-resistant ring 3 and the sealing ring 4 are vertically aligned, and the width of the wear-resistant rib 32 on the wear-resistant ring 3 is less than or equal to the width of the sealing ring 4.
[0018] Example 2, a disc separator, such as Figure 2 As shown, it includes an upper drum 1 and a piston disc 2. The upper drum 1 is located above the piston disc 2. A slag discharge port 5 is provided between the upper drum 1 and the piston disc 2. A sealing ring 4 is embedded at the bottom of the upper drum 1. A piston disc 2 protection structure as described in Example 1 is used on the piston disc 2.
[0019] The specific implementation process is as follows: After high-pressure water is injected into the disc separator, the high-pressure water lifts the piston disc 2, causing the piston disc 2 to move upward until the wear-resistant ring 3 contacts the sealing ring 4 at the bottom of the upper drum 1 to complete the seal. By setting a wear-resistant ring 3 on the piston disc 2, when sealing with the upper drum 1, the contact with it changes from the original piston disc 2 to the wear-resistant ring 3. The impact generated by the closing is borne by the wear-resistant ring 3 and the sealing ring 4, ensuring the sealing effect while preventing the piston disc 2 from being directly impacted and damaged by the upper drum 1 during the closing process, thus effectively protecting the piston disc 2. The impact generated during closure is unavoidable. The sealing ring 4 can reduce impact wear to a certain extent, but the wear ring 3 and the sealing ring 4 are still susceptible to wear. However, the wear ring 3 and the sealing ring 4 can be replaced in time after a period of use, and the cost and precision are relatively low. On the other hand, the piston disc 2 has high machining precision and is difficult to machine. After damage, the repair and replacement are time-consuming and material-intensive. By adopting the structure of this solution, the wear ring 3 is used to replace the piston disc 2 to bear the impact, which can greatly reduce the labor and material costs of maintaining and replacing the piston disc 2.
[0020] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A piston disc protection structure, characterized in that: It includes a piston disc, which is a cone-shaped cylinder with the opening facing upwards. A wear-resistant ring is fixedly connected to the top of the piston disc. An upper drum is provided above the piston disc, and a sealing ring is installed at the bottom of the upper drum. The wear-resistant ring and the sealing ring are vertically aligned.
2. The piston disc protection structure according to claim 1, characterized in that: The wear-resistant ring includes a flange ring, on which an annular wear-resistant rib is integrally formed. The wear-resistant rib has the same inner diameter as the flange ring, and the flange ring is detachably connected to the piston disc.
3. The piston disc protection structure according to claim 2, characterized in that: The flange is connected to the top end face of the piston disc by countersunk screws, and the inner diameter of the flange is the same as the inner diameter of the top of the piston disc.
4. The piston disc protection structure according to claim 3, characterized in that: The width of the wear-resistant ribs is less than or equal to the width of the sealing ring.
5. A disc separator, characterized in that: It includes an upper rotating drum and a piston disc, and a piston disc protection structure as described in any one of claims 1-4 is used on the piston disc.