Silencing dewaxing device
By introducing a spiral air passage structure with spiral fins and a silencer into the dewaxing device, the problem of liquid wax backflow caused by untimely cooling of gaseous wax was solved, achieving efficient cooling of gaseous wax and ensuring the normal operation of the dry screw pump.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN SANHUAN LUCKY NEW MATERIAL CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-16
AI Technical Summary
The existing dewaxing device does not cool the gaseous wax in time, causing some of the gaseous wax to condense into liquid wax and flow back to the dry screw pump exhaust port, causing blockage and affecting the normal operation of the dry screw pump.
A noise-reducing dewaxing device was designed. The spiral air passage structure composed of spiral fins and a silencer increases the contact area and time between gaseous wax and cooling water. The cooling water is used to quickly cool the gaseous wax and prevent liquid wax from flowing back.
It effectively improves the cooling efficiency of gaseous wax, prevents liquid wax backflow, ensures the normal operation of the dry screw pump, and avoids vent blockage.
Smart Images
Figure CN224359331U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of magnet manufacturing, and more particularly to a noise-reducing and dewaxing device. Background Technology
[0002] In the fabrication of NdFeB magnets, the dewaxing process before sintering is a crucial step in ensuring product quality. Dewaxing is typically achieved by installing a dewaxing device on the vacuum pipeline between the sintering furnace and the vacuum pump unit. However, existing dewaxing devices are not efficient at cooling the gaseous wax. A small portion of the gaseous wax passes through the silencer of the dry screw pump and enters the exhaust duct, where it condenses into liquid wax. This liquid wax may flow back to the exhaust port of the dry screw pump, causing blockage, increasing exhaust pressure, and ultimately affecting the pump's operation. Utility Model Content
[0003] To address the aforementioned issues, this application provides a noise-reducing dewaxing device that improves the cooling capacity for gaseous wax.
[0004] This application provides a noise-reducing dewaxing device, comprising:
[0005] The dewaxing mechanism includes:
[0006] A first housing and a second housing, wherein the first housing is fitted over the outside of the second housing to form a water passage cavity, the first housing is provided with an inlet and an outlet communicating with the water passage cavity, and the second housing is provided with a dewaxing cavity;
[0007] A spiral fin is disposed in the dewaxing chamber of the second housing, and the outer wall of the spiral fin is connected to the inner wall of the second housing;
[0008] A silencer is connected to the inner wall of the spiral fins. The silencer has an air chamber and an air outlet is provided on its side wall to communicate with the air chamber. The bottom end of the silencer is provided with a plurality of first wax outlets, the diameter of which is 0.85 to 1.20 cm.
[0009] The air intake pipe connects to the air chamber of the muffler;
[0010] An exhaust pipe connects to the dewaxing chamber of the second housing.
[0011] According to some embodiments of this application, the intake pipe is located above the muffler.
[0012] According to some embodiments of this application, the outlet of the first housing is located above the inlet.
[0013] According to some embodiments of this application, a second wax outlet is provided at the bottom end of the second housing.
[0014] According to some embodiments of this application, the noise-reducing and dewaxing device further includes:
[0015] A wax collector is located at the bottom of the second housing, and a third wax outlet is provided at the bottom of the wax collector.
[0016] According to some embodiments of this application, the intake pipe includes:
[0017] Horizontal section;
[0018] The vertical part is connected to the horizontal part at its top, and the bottom end of the vertical part is located in the air chamber of the muffler.
[0019] According to some embodiments of this application, the ratio of the length of the vertical portion extending into the muffler to the length of the muffler is 70-90%.
[0020] According to some embodiments of this application, at least a portion of the intake pipe is embedded in the exhaust pipe.
[0021] According to some embodiments of this application, the pitch of the spiral fin is 3.5 to 6.5 cm, for example, it can be 3.5 cm, 4.0 cm, 4.5 cm, 5.0 cm, 5.5 cm, 6.0 cm or 6.5 cm, etc.
[0022] According to some embodiments of this application, the diameter of the air outlet of the muffler is 2.5 to 5.5 mm, for example, it can be 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm or 5.5 mm, etc.
[0023] In the dewaxing device of this application, the second shell, spiral fins and silencer form a spiral air passage, which increases the contact area and contact time between gaseous wax and the dewaxing mechanism, thereby improving the dewaxing capacity of the dewaxing device. Attached Figure Description
[0024] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments 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 exceeding the scope of protection claimed by this application.
[0025] Figure 1 This is a schematic diagram of the noise reduction and dewaxing device according to an embodiment of this application;
[0026] Figure 2 This is a schematic diagram of the spiral fins in an embodiment of this application;
[0027] Figure 3 This is a cross-sectional view of the muffler according to an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the wax outlet in an embodiment of this application;
[0029] Figure 5 This is an exploded view of the muffler according to an embodiment of this application;
[0030] Figure 6 This is a schematic diagram of multiple flanges according to an embodiment of this application;
[0031] Figure 7 This is a schematic diagram of the air intake pipe according to an embodiment of this application. Detailed Implementation
[0032] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0033] like Figure 1 As shown, an embodiment of this application provides a noise reduction and dewaxing device 100, which includes a dewaxing mechanism 1, a muffler 2, an air intake pipe 3, and an exhaust pipe 4. Figure 1 The middle arrow indicates the direction of gas flow.
[0034] The dewaxing mechanism 1 includes a first housing 11, a second housing 12, and spiral fins 13. Both the first housing 11 and the second housing 12 are approximately cylindrical. The interior of the first housing 11 is a cavity, and the first housing 11 is fitted over the outside of the second housing 12. The first housing 11 and the second housing 12 are coaxially arranged, forming a closed water passage cavity 14. The first housing 11 is provided with an inlet 111 and an outlet 112 communicating with the water passage cavity 14. Cooling water enters the water passage cavity 14 through the inlet 111 and flows out through the outlet 112.
[0035] like Figure 1 and Figure 2 As shown, the second housing 12 is provided with a dewaxing chamber 121, and the top of the dewaxing chamber 121 is provided with an opening. A spiral fin 13 is disposed in the dewaxing chamber 121 of the second housing 12. The spiral fin 13 extends in a spiral shape and is coaxially arranged with the second housing 12. The outer wall of the spiral fin 13 is connected to the inner wall of the second housing 12. A receiving channel 131 is formed on the inner side of the spiral fin 13. Optionally, the spiral fin 13 is made of a material with a high thermal conductivity, such as copper.
[0036] like Figure 3 and Figure 4As shown, the silencer 2 is disposed in the receiving channel 131 of the spiral fin 13, and the sidewall of the silencer 2 is connected to the inner sidewall of the spiral fin 13. The silencer 2 has an air chamber 21, and the sidewall of the silencer is provided with an air outlet 22 communicating with the air chamber 21. Optionally, multiple air outlets 22 are evenly distributed on the sidewall of the silencer 2. The second housing 12, the spiral fin 13, and the silencer 2 form a spiral air passage. The bottom end of the silencer 2 is provided with a first wax outlet 23, and there are multiple first wax outlets 23 to facilitate the discharge of liquid wax in the air chamber 21.
[0037] Optionally, the outer diameter of the muffler 2 is 12-15 cm, for example, 13 cm. The diameter of the first wax outlet 23 is 0.85-1.20 cm, for example, 0.85 cm, 0.90 cm, 0.95 cm, 1.00 cm, 1.05 cm, 1.10 cm, 1.15 cm or 1.20 cm.
[0038] The intake pipe 3 is connected to the air chamber 21 of the muffler 2, and the intake pipe 3 can deliver gas into the air chamber 21 of the muffler 2. The exhaust pipe 4 is connected to the dewaxing chamber 121 of the second housing 12, for example, the exhaust pipe 4 is connected to the top opening of the second housing 12.
[0039] Cooling water enters the water passage chamber 14 through the inlet 111 and flows out through the outlet 112, cooling the second shell 12. The second shell 12 cools the spiral fins 13 through heat transfer. Gas containing gaseous wax enters the air chamber 21 of the muffler 2 through the air inlet pipe 3. The gas then enters the spiral air passage through the air outlet 22, which serves to muffle the sound. As the gas flows along the spiral air passage, it comes into contact with the spiral fins 13. The gaseous wax condenses into liquid wax upon cooling. The liquid wax flows downward along the spiral fins 13, while the gas flows upward along the spiral fins 13 and is discharged through the exhaust pipe 4.
[0040] In this embodiment, the spiral fins 13 extend in a spiral shape, and the second housing 12, the spiral fins 13 and the silencer 2 form a spiral air passage, which increases the contact area and contact time between the gaseous wax and the dewaxing mechanism 1, thereby improving the dewaxing capacity of the dewaxing device 100.
[0041] Optionally, the opening ratio of the air outlet 22 on the side wall of the muffler 2 is 45% to 65%, for example, it can be 45%, 50%, 55%, 60% or 65%.
[0042] In some embodiments, the air intake pipe 3 is located above the muffler 2, and the air intake pipe 3 is inserted into the muffler 2 from above to prevent the falling liquid wax from clogging the air intake pipe 3.
[0043] In some embodiments, the outlet 112 on the first housing 11 is located above the inlet 111. The inlet 111 is located at the bottom end of the side wall of the first housing 11, and the outlet 112 is located at the top end of the side wall of the first housing 11. The water in the water passage 14 flows from bottom to top, so that the water passage 14 can be basically filled, thereby improving the cooling effect on the gas.
[0044] like Figure 4 As shown, in some embodiments, a second wax outlet 122 is provided at the bottom end of the second housing 12 to facilitate the discharge of liquid wax from the dewaxing chamber 121. Optionally, the bottom of the second housing 12 is approximately U-shaped, and the second wax outlet 122 is located at the center of the bottom surface of the second housing 12.
[0045] like Figure 5 As shown, optionally, the muffler 2 includes a muffler body 24 and an end cap 25. The top of the muffler body 24 is open, and an air outlet 22 is provided on the side wall of the muffler body 24. The end cap 25 closes the top opening of the muffler body 24, and the end cap 25 is provided with an air inlet pipe mounting hole 251, through which the air inlet pipe 3 enters the air chamber 21.
[0046] In some embodiments, the silencing and dewaxing device 100 further includes a wax collector 5, which is disposed at the bottom end of the second housing 12 for collecting liquid wax discharged from the second housing 12. Figure 6 As shown, a first flange 123 is provided at the bottom of the side wall of the second housing 12, and a second flange 52 is provided at the top of the wax collector 5. The first flange 123 is connected to the second flange 52. A third flange 124 is provided at the top of the second housing 12, and a fourth flange 41 is provided at the bottom of the exhaust pipe 4. The third flange 124 is connected to the fourth flange 41.
[0047] like Figure 4 As shown, in some embodiments, the bottom end of the wax collector 5 is provided with a third wax outlet 51. The third wax outlet 51 is connected to a control valve, which controls the opening and closing of the third wax outlet 51. When the control valve is open, liquid wax in the wax collector 5 can be discharged; when the control valve is closed, liquid wax cannot flow out from the third wax outlet 51.
[0048] like Figure 7 As shown, in some embodiments, the intake pipe 3 includes a horizontal portion 31 and a vertical portion 32. The top end of the vertical portion 32 is connected to the end of the horizontal portion 31, the vertical portion 32 is inserted into the muffler 2, and the bottom end of the vertical portion 32 is located in the air chamber 21 of the muffler 2. The L-shaped intake pipe 3 facilitates connection between the intake pipe 3 and the dry screw pump.
[0049] In some embodiments, the ratio of the length of the vertical portion 32 extending into the muffler 2 to the length of the muffler 2 is 70-90%. If the ratio is less than 70%, gas will escape from the muffler 2 prematurely, reducing the dewaxing efficiency. If the ratio is greater than 90%, too much gas will escape without passing through the first wax outlet 23 of the muffler 2, reducing the silencing effect.
[0050] like Figure 1 As shown, in some embodiments, at least a portion of the intake pipe 3 is embedded in the exhaust pipe 4. The diameter of the exhaust pipe 4 is larger than the diameter of the vertical portion 32 of the intake pipe 3. The horizontal portion 31 of the intake pipe 3 is inserted into the exhaust pipe 4, and the top end of the vertical portion 32 of the intake pipe 3 is located in the exhaust pipe 4, which helps to reduce the space occupied by the muffler and dewaxing device 100.
[0051] like Figure 2 As shown, in some embodiments, the pitch H of the spiral fin is 3.5 to 6.5 cm, for example, it can be 3.5 cm, 4.0 cm, 4.5 cm, 5.0 cm, 5.5 cm, 6.0 cm or 6.5 cm, etc.
[0052] In some embodiments, the vent 22 of the muffler 2 is a round hole with a diameter of 2.5 to 5.5 mm, such as 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, or 5.5 mm.
[0053] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Therefore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. In summary, the content of this specification should not be construed as a limitation of this application.
Claims
1. A noise-reducing and dewaxing device, characterized in that, include: The dewaxing mechanism includes: A first housing and a second housing, wherein the first housing is fitted over the outside of the second housing to form a water passage cavity, the first housing is provided with an inlet and an outlet communicating with the water passage cavity, and the second housing is provided with a dewaxing cavity; A spiral fin is disposed in the dewaxing chamber of the second housing, and the outer wall of the spiral fin is connected to the inner wall of the second housing; A silencer is connected to the inner wall of the spiral fins. The silencer has an air chamber and an air outlet is provided on its side wall to communicate with the air chamber. The bottom end of the silencer is provided with a plurality of first wax outlets, the diameter of which is 0.85 to 1.20 cm. The air intake pipe connects to the air chamber of the muffler; An exhaust pipe connects to the dewaxing chamber of the second housing.
2. The noise-reducing and dewaxing device according to claim 1, characterized in that, The air intake pipe is located above the muffler.
3. The noise-reducing and dewaxing device according to claim 1, characterized in that, The outlet of the first housing is located above the inlet.
4. The noise-reducing and dewaxing device according to claim 1, characterized in that, The bottom end of the second housing is provided with a second wax outlet.
5. The noise-reducing and dewaxing device according to claim 4, characterized in that, Also includes: A wax collector is located at the bottom of the second housing, and a third wax outlet is provided at the bottom of the wax collector.
6. The noise-reducing and dewaxing device according to claim 1, characterized in that, The intake pipe includes: Horizontal section; The vertical part is connected to the horizontal part at its top, and the bottom end of the vertical part is located in the air chamber of the muffler.
7. The noise-reducing and dewaxing device according to claim 6, characterized in that, The ratio of the length of the vertical portion extending into the muffler to the length of the muffler is 70-90%.
8. The noise-reducing and dewaxing device according to claim 6, characterized in that, At least a portion of the intake pipe is embedded in the exhaust pipe.
9. The noise-reducing and dewaxing device according to claim 1, characterized in that, The pitch of the spiral fins is 3.5 to 6.5 cm.
10. The noise-reducing and dewaxing device according to claim 1, characterized in that, The diameter of the air outlet of the muffler is 2.5 to 5.5 mm.