Yellow phosphorus mud treatment rotary kiln device
By setting the variable diameter section and the guide spiral at the discharge end of the rotary kiln, the problems of poor sealing and slow discharge are solved, and higher sealing and processing efficiency are achieved.
Patent Information
- Application Number
- CN202422516549.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing rotary kiln equipment for yellow phosphorus and phosphorus sludge treatment has problems such as poor sealing and slow discharge, which leads to air leakage and excessive grinding of phosphorus sludge, reducing treatment efficiency.
A variable diameter section is set at the discharge end of the rotary kiln and a guide spiral is installed. Both ends of the guide spiral are located in the cylinder and discharge end of the rotary kiln to enhance the sealing and accelerate the discharge of phosphorus sludge, and avoid the reaction of phosphorus sludge and air.
It improves the sealing of the rotary kiln, prevents air leakage, enhances the phosphorus collection rate, and improves the treatment efficiency of phosphorus sludge.
Smart Images
Figure CN223228755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln device for treating yellow phosphorus sludge. Background Art
[0002] Existing rotary kilns for yellow phosphorus sludge treatment have a straight rear section and lack a feed screw at the discharge end. This has the following major drawbacks: 1. The relatively large diameter of the sealing ring in the rear section of the rotary kiln results in poor sealing, leading to air leakage into the kiln, where it reacts with phosphorus vapor and consumes the yellow phosphorus. 2. The lack of a feed screw in the rear section of the rotary kiln results in slow discharge of the phosphorus sludge. The kiln's anti-ringing rollers grind the phosphorus sludge to a finer particle size, causing a large amount of phosphorus sludge to enter the subsequent spraying process along with the phosphorus vapor, reducing the efficiency of yellow phosphorus sludge treatment. Summary of the Invention
[0003] The technical problem to be solved by the utility model is that the discharge end of the rotary kiln is prone to leakage and the discharge of the material at the discharge end is slow, which may easily cause excessive grinding of phosphorus mud.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rotary kiln device for treating yellow phosphorus sludge, including a variable diameter section arranged at the discharge end of the rotary kiln, the two ends of the variable diameter section are coaxial with the rotary kiln, and the port diameter of the variable diameter section close to the discharge end of the rotary kiln is smaller than the port diameter of the other end of the variable diameter section, and a material guide spiral is coaxially fixedly connected to the inner wall of the variable diameter section, and the two ends of the material guide spiral are respectively located in the rotary kiln cylinder structure and the rotary kiln discharge end.
[0005] Preferably, ribs are equidistantly installed on both side walls of the material guiding spiral, and the bottom ends of the ribs are fixedly connected to the inner wall of the variable diameter section.
[0006] Preferably, the width of the entire section of the material guiding spiral is equal, and the plate structure of each section of the material guiding spiral is perpendicular to the axis of the rotary kiln.
[0007] Preferably, an adapting groove is provided on the material guiding spiral, one side of the rib plate is located in the adapting groove, a threaded hole is provided at the bottom of the adapting groove, and the rib plate is connected to the material guiding spiral by bolts.
[0008] Preferably, the rib plate is rectangular, and the contact point between the bottom end of the rib plate and the inner wall of the diameter-changing section is welded to the diameter-changing section.
[0009] The utility model provides a rotary kiln device for treating yellow phosphorus sludge. The device replaces the discharge end of an existing straight-cylinder rotary kiln device with a truncated cone-shaped reducing section. The diameter of the rear section of the rotary kiln is reduced after the diameter reduction, thereby enhancing the sealing of the rear end of the rotary kiln. This prevents air from leaking into the interior of the rotary kiln for treating yellow phosphorus sludge, where it would react with phosphorus vapor to consume yellow phosphorus, thereby increasing the phosphorus recovery rate. A material guide screw is added within the reducing section, allowing the phosphorus sludge at the discharge end of the rotary kiln to be quickly guided out of the rotary kiln by the material guide screw. This prevents the phosphorus sludge from being discharged slowly and being over-ground by the rotary kiln's anti-ringing rollers, thereby preventing it from entering the subsequent spraying process along with the phosphorus vapor. This improves the treatment efficiency of the yellow phosphorus sludge. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0011] Figure 1 It is a structural schematic diagram of the discharge end of the rotary kiln in an embodiment of the present utility model.
[0012] Figure 2 Schematic diagram of the internal structure of an embodiment of the present utility model.
[0013] In the figure: 1. Rotary kiln; 2. Variable diameter section; 3. Material guide screw; 31. Rib plate. DETAILED DESCRIPTION
[0014] like Figure 1 and Figure 2 As shown, the utility model proposes a rotary kiln device for treating yellow phosphorus sludge, including a reducing section 2 arranged at the discharge end of the rotary kiln 1, the two ends of the reducing section 2 are coaxial with the rotary kiln 1, and the diameter of the port of the reducing section 2 close to the discharge end of the rotary kiln is smaller than the diameter of the port at the other end of the reducing section 2, and a material guiding spiral 3 is coaxially fixedly connected to the inner wall of the reducing section 2, and the two ends of the material guiding spiral 3 are respectively located in the cylindrical structure of the rotary kiln 1 and the discharge end of the rotary kiln 1.
[0015] One end of the reducing section 2 is used to connect to the middle part of the rotary kiln 1, and the other end is used to connect to the discharge end of the rotary kiln 1. The middle part of the reducing section 2 is a frustum structure. The reducing section 2 is used to replace the original straight cylinder structure of the rotary kiln 1, so that the diameter of the discharge end of the rotary kiln 1 is smaller than the diameter of the middle part of the rotary kiln 1. Then, a small-diameter sealing ring can be installed at the discharge end of the rotary kiln 1 to enhance the sealing performance of the rotary kiln 1. The material guiding spiral 3 has a spiral structure and is coaxial with the reducing section 2. The material guiding spiral 3 is welded to the inner wall of the reducing section 2. The two ends of the material guiding spiral 3 are located outside the reducing section 2, and are respectively connected to the middle of the rotary kiln 1 and the discharge end of the rotary kiln 1. During the rotation of the rotary kiln 1, the phosphorus mud in the middle of the rotary kiln 1 enters the material guiding spiral 3, and the phosphorus mud flows through the gap between two adjacent turns of the material guiding spiral 3. Under the guiding action of the material guiding spiral 3, the phosphorus mud flows out of the reducing section 2 and enters the discharge end of the rotary kiln 1, and finally flows out from the discharge end of the rotary kiln 1.
[0016] like Figure 2 As shown. Both side walls of the guide spiral 3 are equidistantly installed with ribs 31, and the bottom ends of the ribs 31 are fixedly connected to the inner wall of the variable diameter section 2. During the long-term operation of the rotary kiln 1, the dried phosphorus sludge continuously washes the guide spiral 3, which can easily wear through the guide spiral 3. Therefore, adding ribs 31 to the guide spiral 3 can not only increase the stability of the connection between the guide spiral 3 and the variable diameter section 2, but also after the phosphorus sludge flows through, some of the phosphorus sludge will remain on the side wall of the guide spiral 3 between the two adjacent ribs 31. The subsequent phosphorus sludge will not directly contact the side wall of the guide spiral 3 during the continued flow, thereby extending the service life of the guide spiral 3. Moreover, after the subsequent phosphorus sludge flows out, the phosphorus sludge located between the two adjacent ribs 31 will also flow out, and no phosphorus sludge will remain.
[0017] like Figure 2 As shown, the entire width of the material guide spiral 3 is equal, and the plate structure of each section of the material guide spiral 3 is perpendicular to the axis of the rotary kiln 1. The uniform width of the material guide spiral 3 prevents phosphorus sludge from overflowing after flowing to the rear section of the material guide spiral 3 due to the reduced width. The straight plate structure of each section of the material guide spiral 3 also prevents excessive friction of phosphorus sludge on the side wall of the material guide spiral 3.
[0018] As a preferred embodiment of the present invention, the guide screw 3 is provided with an adapting groove, one side of the rib 31 is located within the adapting groove, and a threaded hole is provided at the bottom of the adapting groove. The rib 31 is connected to the guide screw 3 via bolts. The use of bolts for fastening facilitates the installation and replacement of the rib 31, and the uniform width of the guide screw 3 allows the rib 31 to be universally used.
[0019] As a preferred embodiment of the present invention, the rib plate 31 is rectangular, and the bottom end of the rib plate 31 is welded to the reducing section 2 at the point where it contacts the inner wall of the reducing section 2. The rib plate 31 is made into a standard part to facilitate replacement during subsequent maintenance, and the point where the rib plate 31 contacts the reducing section 2 serves as the fulcrum on both sides of the material guide spiral 3 for welding.
Claims
1. A rotary kiln device for treating yellow phosphorus sludge, characterized by: The invention comprises a reducing section (2) arranged at the discharge end of a rotary kiln (1), wherein both ends of the reducing section (2) are coaxial with the rotary kiln (1), and the diameter of a port of the reducing section (2) close to the discharge end of the rotary kiln is smaller than the diameter of a port of the other end of the reducing section (2), and a material guide spiral (3) is coaxially fixedly connected to the inner wall of the reducing section (2), and the two ends of the material guide spiral (3) are respectively located in the cylindrical structure of the rotary kiln (1) and the discharge end of the rotary kiln (1).
2. A rotary kiln device for treating yellow phosphorus sludge according to claim 1, characterized in that: Rib plates (31) are equidistantly mounted on both side walls of the material guiding spiral (3), and the bottom ends of the rib plates (31) are fixedly connected to the inner wall of the diameter-reducing section (2).
3. A rotary kiln device for treating yellow phosphorus sludge according to claim 2, characterized in that: The width of the entire section of the material guiding spiral (3) is equal, and the plate structures of each section of the material guiding spiral (3) are perpendicular to the axis of the rotary kiln (1).
4. A rotary kiln device for treating yellow phosphorus sludge according to claim 2, characterized in that: An adapting groove is provided on the material guiding spiral (3), one side of the rib plate (31) is located in the adapting groove, a threaded hole is provided at the bottom of the adapting groove, and the rib plate (31) is connected to the material guiding spiral (3) via bolts.
5. A rotary kiln device for treating yellow phosphorus sludge according to claim 2, characterized in that: The rib plate (31) is rectangular, and the contact point between the bottom end of the rib plate (31) and the inner wall of the diameter-reducing section (2) is welded to the diameter-reducing section (2).