Exhaust structure of bell-type furnace
By introducing a removable high-temperature resistant filter screen and filter seat into the exhaust structure of the bell furnace, the problem of blockage caused by dust accumulation in the exhaust pipe was solved, achieving efficient dust cleaning and exhaust gas discharge, and improving the operational stability of the equipment.
Patent Information
- Application Number
- CN202520340980.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The exhaust pipes of existing bell-shaped furnaces are prone to blockage due to dust accumulation after prolonged use, making cleaning difficult and impossible to disassemble, thus affecting the efficiency of exhaust gas discharge.
An exhaust structure including a high-temperature resistant filter and a removable filter seat was designed. The high-temperature resistant filter intercepts dust, and the removable filter seat can be cleaned when needed. The combination of sealing ring and locking bolts ensures the reliability and sealing of the connection.
It effectively intercepts and cleans dust, avoids exhaust pipe blockage, ensures smooth discharge of exhaust gas, and improves the service life and working efficiency of the equipment.
Smart Images
Figure CN223925445U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bell-shaped furnaces, and in particular to an exhaust structure for a bell-shaped furnace. Background Technology
[0002] A bell furnace utilizes gas heating to place metal materials under a sealed bell jar. By controlling the temperature inside the furnace to reach a predetermined annealing temperature, this temperature is maintained. Depending on the characteristics of the metal material and process requirements, the metal material needs to be held at this temperature for a certain period of time to allow changes in its internal structure, thereby improving its plasticity and toughness, which is beneficial for subsequent processing and forming. After the metal material is heated, a significant amount of waste gas is released from its surface. This waste gas is discharged through an exhaust pipe to a cooler for cooling before being discharged through an exhaust valve. The cooler is designed to prevent overheated waste gas from contacting the exhaust valve and causing damage.
[0003] However, the exhaust gas often carries dust. This is because metal materials volatilize or oxidize at high temperatures, producing small particles of metal oxides or other compounds. These small particles condense into dust during the cooling process, and the dust flows with the exhaust gas to the exhaust pipe. When the exhaust pipe has been used for a long time, the dust accumulates inside, causing blockage. However, the exhaust pipe cannot be disassembled at present, making dust cleaning difficult. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an exhaust structure for a bell-shaped furnace. The purpose is to solve the technical problem that dust will flow with the exhaust gas to the exhaust pipe, and when the exhaust pipe is used for a long time, dust will accumulate inside, causing blockage of the exhaust pipe. However, the exhaust pipe cannot be disassembled at present, making dust cleaning difficult.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0006] An exhaust structure for a bell-shaped furnace includes a support frame. An exhaust pipe is provided on one side of the support frame. A cooler is provided at one end of the exhaust pipe, and an exhaust connecting pipe is provided at one end of the cooler. An exhaust valve is provided at one end of the exhaust connecting pipe, and multiple connecting branch pipes are provided at the other end of the exhaust pipe. An installation cylinder is provided at one end of the connecting branch pipe. A filter seat is detachably connected to one end of the installation cylinder. A first connecting cavity communicating with the interior of the installation cylinder is opened at one end of the filter seat. A high-temperature resistant filter screen is provided inside the first connecting cavity. A second connecting cavity is provided inside the filter seat, located below the high-temperature resistant filter screen. A detachable first air inlet pipe is provided on one side of the filter seat, communicating with the second connecting cavity. A high-temperature resistant ball valve is connected to one end of the first air inlet pipe, and a second air inlet pipe is connected to one end of the high-temperature resistant ball valve. The second air inlet pipe is used to communicate with the bell-shaped furnace.
[0007] When the exhaust gas is discharged from the bell-shaped furnace, the high-temperature ball valve is open. The exhaust gas enters the second connecting cavity through the second and first inlet pipes. Since the first connecting cavity is equipped with a high-temperature filter, the filter traps dust inside the second connecting cavity. The filtered exhaust gas then passes through the first connecting cavity, the inside of the mounting cylinder, the connecting branch pipe, the exhaust pipe, the cooler, and the exhaust connecting pipe in sequence before being discharged from the exhaust valve. When a lot of dust accumulates in the second connecting cavity, the filter seat can be disassembled because it is detachably connected to the first inlet pipe and the mounting cylinder, allowing for easy cleaning of the accumulated dust and the high-temperature filter.
[0008] Furthermore, in this application, the outer edge of the filter base is provided with a plurality of connecting protrusions, one end of the connecting protrusions protruding from one end of the filter base. The outside of the mounting cylinder is provided with a plurality of connecting seats, one end of the connecting seat having a connecting slot. One end of the plurality of connecting protrusions is respectively inserted into the connecting slot of the plurality of connecting seats. One end of the connecting protrusion is provided with a first locking hole. One side of the connecting seat is provided with a second locking hole communicating with the connecting slot. A locking bolt passes through the second locking hole, and the locking bolt is threadedly engaged with the adjacent first locking hole.
[0009] When the filter base needs to be disassembled, the locking bolt is unscrewed from the first and second locking holes, allowing the connecting convex plate to disengage from the connecting slot. This makes the installation and disassembly of the filter base simple and quick. Furthermore, the filter base can be quickly disassembled when it is necessary to clean the dust in the second connecting cavity or clean the high-temperature resistant filter screen. After the filter base is cleaned, the connecting convex plate is re-inserted into the connecting slot, and the locking bolt passes through the second locking hole and engages with the threaded first locking hole. The design of multiple connecting convex plates and the connecting base disperses the stress at the fixing points, improving the load-bearing capacity and structural strength of the filter base, enabling it to adapt to working environments with high temperatures and airflow impact.
[0010] Furthermore, in this application, one end of the filter seat is provided with a first connecting protrusion ring, and one end of the mounting cylinder is provided with an air inlet cavity. The air inlet cavity connects the interior of the first connecting cavity and the interior of the connecting branch pipe. A first sealing ring is fitted on the outer edge of the first connecting protrusion ring. The first sealing ring is elastic and its diameter is slightly larger than the inner diameter of the air inlet cavity. The first connecting protrusion ring is inserted into the air inlet cavity, so that the outer edge of the first sealing ring abuts against the inner edge of the air inlet cavity.
[0011] When the filter base is installed, the first connecting protrusion is inserted into the air intake cavity, so that the outer edge of the first sealing ring abuts against the inner edge of the air intake cavity. Through the elastic characteristics of the first sealing ring and its design that is slightly larger than the inner diameter of the air intake cavity, the connection between the filter base and the mounting cylinder can be ensured to have good sealing performance, preventing exhaust gas leakage.
[0012] Furthermore, in this application, the other end of the filter seat is detachably connected to a dust collection seat, one end of which has a dust collection cavity that communicates with the second connecting cavity.
[0013] Furthermore, in this application, one end of the ash collection seat is provided with a second connecting protrusion ring, and a second sealing ring is sleeved on the outside of the second connecting protrusion ring. The second sealing ring is elastic, and the diameter of the second sealing ring matches the inner diameter of the filter seat. The second connecting protrusion ring is threadedly engaged with the second connecting cavity, so that the second sealing ring abuts against the other end of the filter seat.
[0014] Furthermore, in this application, a limiting protrusion is provided inside the first connecting cavity, and a mounting ring is provided at the top of the limiting protrusion. The mounting ring abuts against the limiting protrusion, and a limiting ring groove is formed inside the mounting ring. The outer edge of the high-temperature resistant filter matches the limiting ring groove, and the high-temperature resistant filter is disposed inside the mounting ring, so that the outer edge of the high-temperature resistant filter is connected to the limiting ring groove.
[0015] Furthermore, in this application, the mounting ring has a plurality of first fixing holes inside, and the top of the limiting protrusion ring has a plurality of second fixing holes. Fixing bolts are inserted into the first fixing holes, and the fixing bolts are threadedly engaged with the adjacent second fixing holes.
[0016] Furthermore, in this application, the bottom of the mounting ring is provided with a plurality of positioning pins, and the top of the limiting protrusion ring is provided with a plurality of positioning slots, and the plurality of positioning pins are respectively inserted into the plurality of positioning slots.
[0017] Furthermore, in this application, the other end of the high-temperature ball valve is provided with a third air inlet pipe, one end of the third air inlet pipe is provided with a telescopic air inlet pipe, one end of the telescopic air inlet pipe is provided with a connecting cylinder, one end of the connecting cylinder is rotatably connected to a rotating ring, one end of the rotating ring is provided with a connecting rotating cylinder, and a third sealing ring is sleeved on the outside of the connecting rotating cylinder. The third sealing ring is elastic, and the diameter of the third sealing ring matches the inner diameter of the first air inlet pipe. The connecting rotating cylinder is threadedly engaged with the internal threads of the first air inlet pipe, so that the third sealing ring abuts against one end of the first air inlet pipe.
[0018] Furthermore, in this application, one end of the connecting cylinder is provided with a guide ring groove, and the other end of the rotating ring is provided with a guide protrusion, the guide protrusion being rotatably connected to the guide ring groove.
[0019] This utility model has the following beneficial effects:
[0020] When the exhaust gas is discharged from the bell-shaped furnace, the high-temperature ball valve is open. The exhaust gas enters the second connecting cavity through the second and first inlet pipes. Since the first connecting cavity is equipped with a high-temperature filter, the filter traps dust inside the second connecting cavity. The filtered exhaust gas then passes through the first connecting cavity, the inside of the mounting cylinder, the connecting branch pipe, the exhaust pipe, the cooler, and the exhaust connecting pipe in sequence before being discharged from the exhaust valve. When a lot of dust accumulates in the second connecting cavity, the filter seat can be disassembled because it is detachably connected to the first inlet pipe and the mounting cylinder, allowing for easy cleaning of the accumulated dust and the high-temperature filter. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model.
[0022] Figure 2 This is a schematic diagram of the connecting branch pipe of this utility model.
[0023] Figure 3 This is a schematic diagram of the mounting cylinder of this utility model.
[0024] Figure 4 This is a schematic diagram of the structure of the ash collection seat of this utility model.
[0025] Figure 5 This is a schematic diagram of the connecting protrusion of this utility model.
[0026] Figure 6 This is a schematic diagram of the telescopic air intake pipe of this utility model.
[0027] Figure 7 This is a schematic diagram of the connecting cylinder of this utility model.
[0028] Figure 8 yes Figure 5 Enlarged view of point A in the middle.
[0029] In the attached figures, the following labels are used:
[0030] 1. Support frame; 2. Exhaust pipe; 3. Cooler; 4. Exhaust connection pipe; 5. Exhaust valve; 6. Connecting branch pipe; 7. Mounting cylinder; 8. Filter seat; 9. Ash collection seat; 10. First air inlet pipe; 11. Telescopic air inlet pipe; 12. Second air inlet pipe; 13. High-temperature resistant ball valve; 14. Third air inlet pipe; 15. First connecting protrusion ring; 16. First sealing ring; 17. First connecting cavity; 18. Connecting protrusion plate; 19. First locking hole; 20. Connecting seat; 21. Connecting slot; 22. Second locking hole; 3. Locking bolt; 24. Air intake cavity; 25. Limiting protrusion ring; 26. Mounting ring; 27. Limiting ring groove; 28. High-temperature resistant filter screen; 29. Fixing bolt; 30. First fixing hole; 31. Second fixing hole; 32. Positioning pin; 33. Positioning slot; 34. Connecting cylinder; 35. Rotating ring; 36. Connecting rotating cylinder; 37. Third sealing ring; 38. Guide protrusion ring; 39. Guide ring groove; 40. Second connecting protrusion ring; 41. Second sealing ring; 42. Second connecting cavity; 43. Dust collection cavity. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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. They do not 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. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] Reference Figures 1-8 In some specific embodiments, the exhaust structure of a bell-shaped furnace includes a support frame 1, an exhaust pipe 2 on one side of the support frame 1, a cooler 3 at one end of the exhaust pipe 2, an exhaust connecting pipe 4 at one end of the cooler 3, an exhaust valve 5 at one end of the exhaust connecting pipe 4, and multiple connecting branch pipes 6 at the other end of the exhaust pipe 2. An installation cylinder 7 is provided at one end of the connecting branch pipe 6, and a filter seat 8 is detachably connected to one end of the installation cylinder 7. A first connecting cavity 17 communicating with the interior of the installation cylinder 7 is opened at one end of the filter seat 8. A high-temperature resistant filter screen 28 is provided inside the first connecting cavity 17. A second connecting cavity 42 is provided inside the filter seat 8, located below the high-temperature resistant filter screen 28. A detachable first air inlet pipe 10 is provided on one side of the filter seat 8, communicating with the second connecting cavity 42. A high-temperature resistant ball valve 13 is connected to one end of the first air inlet pipe 10, and a second air inlet pipe 12 is connected to one end of the high-temperature resistant ball valve 13. The second air inlet pipe 12 is used to communicate with the bell-shaped furnace.
[0035] With the above technical solution, when the exhaust gas is discharged from the bell furnace, the high-temperature ball valve 13 is in the open state. The exhaust gas enters the interior of the second connecting cavity 42 through the second inlet pipe 12 and the first inlet pipe 10. Since the interior of the first connecting cavity 17 is equipped with a high-temperature filter screen 28, the high-temperature filter screen 28 intercepts the dust inside the second connecting cavity 42. The filtered exhaust gas passes through the interior of the first connecting cavity 17, the mounting cylinder 7, the connecting branch pipe 6, the exhaust pipe 2, the cooler 3, and the exhaust connecting pipe 4 in sequence, and is then discharged from the exhaust valve 5. When a lot of dust accumulates in the second connecting cavity 42, since the filter seat 8 is detachably connected to the first inlet pipe 10 and the filter seat 8 is detachably connected to the mounting cylinder 7, the filter seat 8 can be disassembled to facilitate the cleaning of the accumulated dust and the high-temperature filter screen 28.
[0036] In addition, since the other end of the exhaust pipe 2 is equipped with multiple connecting branch pipes 6, any one of the high-temperature ball valves 13 can be closed when cleaning dust. The high-temperature ball valve 13 closes the corresponding second air inlet pipe 12 channel, so that the corresponding filter seat 8 can be disassembled and cleaned first, while the other filter seats 8 remain in normal operation, thus not affecting the exhaust gas discharge of the bell furnace.
[0037] Reference Figures 2-5 In some specific embodiments, the outer edge of the filter base 8 is provided with a plurality of connecting protrusions 18, one end of the connecting protrusions 18 protruding from one end of the filter base 8. The outer side of the mounting cylinder 7 is provided with a plurality of connecting seats 20, one end of the connecting seat 20 is provided with a connecting slot 21, one end of the plurality of connecting protrusions 18 is respectively inserted into the connecting slot 21 of the plurality of connecting seats 20, one end of the connecting protrusions 18 is provided with a first locking hole 19, one side of the connecting seat 20 is provided with a second locking hole 22 communicating with the connecting slot 21, a locking bolt 23 is passed through the second locking hole 22, and the locking bolt 23 is threadedly engaged with the adjacent first locking hole 19.
[0038] With the above technical solution, when the filter seat 8 needs to be disassembled, the locking bolt 23 is unscrewed from the first locking hole 19 and the second locking hole 22, so that the connecting convex plate 18 can be disengaged from the connecting slot 21, making the installation and disassembly process of the filter seat 8 simple and quick. When it is necessary to clean the dust in the second connecting cavity 42 or clean the high-temperature resistant filter screen 28, the filter seat 8 can be quickly disassembled. After the filter seat 8 is cleaned, the connecting convex plate 18 is re-inserted into the connecting slot 21, and the locking bolt 23 passes through the second locking hole 22 and is threaded into the first locking hole 19. The design of multiple connecting convex plates 18 and connecting seat 20 disperses the stress at the fixing point, improves the load-bearing capacity and structural strength of the filter seat 8, and enables it to adapt to the working environment of high temperature and airflow impact.
[0039] Reference Figures 2-5 In some specific embodiments, one end of the filter seat 8 is provided with a first connecting protrusion ring 15, and one end of the mounting cylinder 7 is provided with an air inlet cavity 24. The air inlet cavity 24 connects the interior of the first connecting cavity 17 and the connecting branch pipe 6. The outer edge of the first connecting protrusion ring 15 is fitted with a first sealing ring 16. The first sealing ring 16 is elastic and its diameter is slightly larger than the inner diameter of the air inlet cavity 24. The first connecting protrusion ring 15 is inserted into the air inlet cavity 24, so that the outer edge of the first sealing ring 16 abuts against the inner edge of the air inlet cavity 24.
[0040] Furthermore, the first sealing ring 16 is preferably a high-temperature resistant sealing ring.
[0041] With the above technical solution, when the filter seat 8 is installed, the first connecting protrusion 15 is inserted into the air intake cavity 24, so that the outer edge of the first sealing ring 16 abuts against the inner edge of the air intake cavity 24. Through the elastic characteristics of the first sealing ring 16 and the design of the inner diameter being slightly larger than that of the air intake cavity 24, it can be ensured that the connection between the filter seat 8 and the mounting cylinder 7 has good sealing performance and prevents exhaust gas leakage.
[0042] Reference Figures 1-5In some specific embodiments, the other end of the filter seat 8 is detachably connected to the dust collection seat 9, and one end of the dust collection seat 9 is provided with a dust collection cavity 43, which is connected to the second connecting cavity 42.
[0043] With the above technical solution, when dust is intercepted by the high-temperature resistant filter 28, since the dust collection cavity 43 is connected to the second connecting cavity 42, the dust will gather into the interior of the dust collection cavity 43 through the second connecting cavity 42. While expanding the dust collection space, since the dust collection seat 9 and the filter seat 8 are detachably connected, the dust collection seat 9 can be disassembled separately after the dust collection cavity 43 is full, thereby simplifying the dust cleaning method.
[0044] Reference Figures 1-5 In some specific embodiments, one end of the dust collection seat 9 is provided with a second connecting protrusion ring 40, and a second sealing ring 41 is sleeved on the outside of the second connecting protrusion ring 40. The second sealing ring 41 is elastic, and the diameter of the second sealing ring 41 matches the inner diameter of the filter seat 8. The second connecting protrusion ring 40 is threadedly engaged with the second connecting cavity 42, so that the second sealing ring 41 abuts against the other end of the filter seat 8.
[0045] Through the above technical solution, after the dust in the dust collection cavity 43 of the dust collection seat 9 is cleaned, the second connecting protruding ring 40 of the dust collection seat 9 is threadedly engaged with the second connecting cavity 42, so that the second sealing ring 41 abuts against the other end of the filter seat 8, thereby achieving an effective seal between the dust collection seat 9 and the filter seat 8 and preventing exhaust gas from leaking at the connection.
[0046] Furthermore, the second sealing ring 41 is preferably a high-temperature resistant sealing ring.
[0047] Reference Figure 5 In some specific embodiments, a limiting protrusion 25 is provided inside the first connecting cavity 17, and a mounting ring 26 is provided on the top of the limiting protrusion 25. The mounting ring 26 abuts against the limiting protrusion 25, and a limiting ring groove 27 is formed inside the mounting ring 26. The outer edge of the high-temperature resistant filter 28 matches the limiting ring groove 27. The high-temperature resistant filter 28 is located inside the mounting ring 26, so that the outer edge of the high-temperature resistant filter 28 is connected to the limiting ring groove 27.
[0048] With the above technical solution, when the high-temperature resistant filter screen 28 needs to be cleaned, the filter seat 8 is disassembled so that the mounting ring 26 is disengaged from the limiting protrusion ring 25, and the mounting ring 26 can be disassembled to facilitate the cleaning of the high-temperature resistant filter screen 28.
[0049] Reference Figures 1-8In some specific embodiments, the mounting ring 26 has multiple first fixing holes 30 inside, and the top of the limiting protrusion ring 25 has multiple second fixing holes 31. Fixing bolts 29 are inserted into the first fixing holes 30, and the fixing bolts 29 are threadedly engaged with the adjacent second fixing holes 31.
[0050] With the above technical solution, when the fixing bolt 29 passes through the first fixing hole 30 and is threaded into the second fixing hole 31, the mounting ring 26 is fixed on the limiting protrusion ring 25, thereby enhancing the stability of the high temperature resistant filter screen 28 in the filter seat 8 and preventing it from shifting due to vibration or other external forces during use.
[0051] Reference Figure 8 In some specific embodiments, the bottom of the mounting ring 26 is provided with multiple positioning pins 32, and the top of the limiting protrusion ring 25 is provided with multiple positioning slots 33, and the multiple positioning pins 32 are respectively inserted into the multiple positioning slots 33.
[0052] With the above technical solution, when multiple positioning pins 32 are inserted into multiple positioning slots 33 respectively, it is convenient for the second fixing hole 31 of the limiting protrusion ring 25 to be aligned with the first fixing hole 30 of the mounting ring 26, thereby simplifying the hole-to-hole alignment operation.
[0053] Reference Figures 1-7 In some specific embodiments, the other end of the high-temperature ball valve 13 is provided with a third air inlet pipe 14, one end of the third air inlet pipe 14 is provided with a telescopic air inlet pipe 11, one end of the telescopic air inlet pipe 11 is provided with a connecting cylinder 34, one end of the connecting cylinder 34 is rotatably connected to a rotating ring 35, one end of the rotating ring 35 is provided with a connecting rotating cylinder 36, and a third sealing ring 37 is sleeved on the outside of the connecting rotating cylinder 36. The third sealing ring 37 is elastic, and the diameter of the third sealing ring 37 matches the inner diameter of the first air inlet pipe 10. The connecting rotating cylinder 36 is threadedly engaged with the internal threads of the first air inlet pipe 10, so that the third sealing ring 37 abuts against one end of the first air inlet pipe 10.
[0054] With the above technical solution, when the filter seat 8 is disassembled, the connecting drum 36 can rotate, allowing the connecting drum 36 to unscrew the first air inlet pipe 10, so as to facilitate the disassembly of the filter seat 8; when the filter seat 8 is connected to the telescopic air inlet pipe 11, the internal threads of the connecting drum 36 and the first air inlet pipe 10 are engaged, so that the third sealing ring 37 abuts against one end of the first air inlet pipe 10. The tight contact between the third sealing ring 37 and the first air inlet pipe 10 ensures the sealing performance of the connection part and prevents exhaust gas leakage.
[0055] In addition, the third sealing ring 37 is a high-temperature resistant sealing ring; one end of the rotating ring 35 and the connecting cylinder 34 can be provided with an elastic sealing ring, so that when the rotating ring 35 stops rotating, the elasticity of the sealing ring can improve the airtightness between the rotating ring 35 and the connecting cylinder 34.
[0056] Reference Figure 7 In some specific embodiments, one end of the connecting cylinder 34 is provided with a guide ring groove 39, and the other end of the rotating ring 35 is provided with a guide protrusion 38, which is rotatably connected to the guide ring groove 39.
[0057] Through the above technical solution, the cooperation between the guide ring groove 39 and the guide convex ring 38 ensures the precise positioning of the rotating ring 35 on the connecting cylinder 34, and avoids deviation during rotation.
[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. An exhaust structure for a bell-shaped furnace, comprising a support frame, an exhaust pipe provided on one side of the support frame, a cooler provided at one end of the exhaust pipe, an exhaust connecting pipe provided at one end of the cooler, and an exhaust valve provided at one end of the exhaust connecting pipe, characterized in that, The other end of the exhaust pipe is provided with multiple connecting branch pipes. One end of each connecting branch pipe is provided with an installation cylinder. One end of the installation cylinder is detachably connected to a filter seat. One end of the filter seat has a first connecting cavity that communicates with the interior of the installation cylinder. The interior of the first connecting cavity is provided with a high-temperature resistant filter screen. The interior of the filter seat is provided with a second connecting cavity. The second connecting cavity is located below the high-temperature resistant filter screen. One side of the filter seat is provided with a detachable first air inlet pipe that communicates with the second connecting cavity. One end of the first air inlet pipe is connected to a high-temperature resistant ball valve. One end of the high-temperature resistant ball valve is connected to a second air inlet pipe that is used to communicate with the bell furnace.
2. The exhaust structure of a bell-shaped furnace according to claim 1, characterized in that, The filter base has multiple connecting protrusions along its outer edge, with one end of each protrusion extending beyond one end of the filter base. The mounting cylinder has multiple connecting seats on its exterior, each with a connecting slot at one end. One end of each connecting protrusion is inserted into the connecting slot of the connecting seat. A first locking hole is formed inside one end of each connecting protrusion, and a second locking hole communicating with the connecting slot is formed on one side of each connecting seat. A locking bolt passes through the second locking hole, and the locking bolt is threaded into the adjacent first locking hole.
3. The exhaust structure of a bell-shaped furnace according to claim 2, characterized in that, One end of the filter base is provided with a first connecting protrusion ring, and one end of the mounting cylinder is provided with an air inlet cavity. The air inlet cavity connects the first connecting cavity and the interior of the connecting branch pipe. A first sealing ring is fitted on the outer edge of the first connecting protrusion ring. The first sealing ring is elastic and its diameter is slightly larger than the inner diameter of the air inlet cavity. The first connecting protrusion ring is inserted into the air inlet cavity so that the outer edge of the first sealing ring abuts against the inner edge of the air inlet cavity.
4. The exhaust structure of a bell-shaped furnace according to claim 1, characterized in that, The other end of the filter base is detachably connected to a dust collection base, one end of which has a dust collection cavity that is connected to the second connecting cavity.
5. The exhaust structure of a bell-shaped furnace according to claim 4, characterized in that, One end of the ash collection seat is provided with a second connecting protrusion ring, and a second sealing ring is sleeved on the outside of the second connecting protrusion ring. The second sealing ring is elastic, and the diameter of the second sealing ring matches the inner diameter of the filter seat. The second connecting protrusion ring is threadedly engaged with the second connecting cavity, so that the second sealing ring abuts against the other end of the filter seat.
6. The exhaust structure of a bell-shaped furnace according to claim 1, characterized in that, The first connecting cavity has a limiting protrusion ring inside, and a mounting ring is provided on the top of the limiting protrusion ring. The mounting ring abuts against the limiting protrusion ring. A limiting ring groove is formed inside the mounting ring. The outer edge of the high-temperature resistant filter screen matches the limiting ring groove. The high-temperature resistant filter screen is located inside the mounting ring, so that the outer edge of the high-temperature resistant filter screen is connected to the limiting ring groove.
7. The exhaust structure of a bell-shaped furnace according to claim 6, characterized in that, The mounting ring has multiple first fixing holes inside, and the top of the limiting protrusion ring has multiple second fixing holes. Fixing bolts are inserted into the first fixing holes, and the fixing bolts are threaded into the adjacent second fixing holes.
8. The exhaust structure of a bell-shaped furnace according to claim 7, characterized in that, The bottom of the mounting ring is provided with multiple positioning pins, and the top of the limiting protrusion ring is provided with multiple positioning slots. The multiple positioning pins are respectively inserted into the multiple positioning slots.
9. The exhaust structure of a bell-shaped furnace according to claim 1, characterized in that, The high-temperature ball valve is provided with a third air inlet pipe at one end, a telescopic air inlet pipe at one end, a connecting cylinder at one end, a rotating ring rotatably connected to one end of the connecting cylinder, a connecting rotating cylinder at one end of the rotating ring, and a third sealing ring fitted on the outside of the connecting rotating cylinder. The third sealing ring is elastic, and its diameter matches the inner diameter of the first air inlet pipe. The connecting rotating cylinder is threaded into the internal part of the first air inlet pipe, so that the third sealing ring abuts against one end of the first air inlet pipe.
10. The exhaust structure of a bell-shaped furnace according to claim 9, characterized in that, One end of the connecting cylinder is provided with a guide ring groove, and the other end of the rotating ring is provided with a guide protrusion ring, which is rotatably connected to the guide ring groove.