Feedback furnace
By using a multi-stage single-core design for the feedback furnace and coordinating with corresponding mechanisms, the problems of high maintenance difficulty and low thermal efficiency of the sludge drying and carbonization hot blast furnace have been solved, achieving convenient maintenance and efficient temperature control, and improving the efficiency and safety of the hot blast furnace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LEI JIN ENVIRONMENTAL ENG CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-26
AI Technical Summary
The hot air furnace for sludge drying and carbonization in municipal wastewater treatment plants suffers from problems such as the difficulty in repairing damaged refractory and insulation layers, and the difficulty in sealing ash removal doors and air supply holes, which affect the furnace's thermal efficiency.
A multi-segment single furnace core structure was designed, which combines a castable core seat, ventilation mechanism, sealing mechanism, maintenance mechanism and insulation components to achieve convenient maintenance and temperature control. Ventilation is achieved through the use of a second flange, a make-up air window and a pyrolysis gas inlet. Quick installation and cleaning are achieved by using a door frame, a circular door leaf and bolts. Temperature and pressure are monitored in real time using a detection device.
It improves maintenance and replacement efficiency, ensures stable use of the furnace core, achieves efficient ventilation and temperature control of the furnace body, reduces maintenance time, improves thermal efficiency, and allows for the reuse of hot gas.
Smart Images
Figure CN224415706U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of feedback furnace technology, specifically feedback furnace. Background Technology
[0002] The sludge drying and carbonization hot air furnaces currently used in municipal sewage treatment plants have several defects: First, the refractory layer and insulation layer inside the furnace are integrated with the furnace body. After a period of use, the refractory layer and insulation layer are damaged to varying degrees by burning, and the repair is difficult and time-consuming. Second, the multiple ash removal doors and air supply holes on the outside of the furnace body are not easy to seal completely, resulting in incomplete ash removal and easy heat conduction to the outside, which affects the thermal efficiency of the furnace body.
[0003] Therefore, this utility model provides a feedback furnace. Utility Model Content
[0004] To overcome the shortcomings of the prior art and solve at least one of the problems mentioned in the background art, a feedback furnace is proposed.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The feedback furnace of this utility model includes a furnace body; first flanges are fixedly installed on both sides of the furnace body, support legs are fixedly installed on the bottom of the surface of the furnace body, a connecting component is provided on the inner wall of the furnace body, and a ventilation mechanism is provided on the top of the surface of the furnace body; a sealing mechanism is provided at one end of the furnace body, and a maintenance mechanism is provided at the end of the furnace body near the sealing mechanism; an exhaust mechanism is provided on one side of the surface of the furnace body, and a heat insulation component is provided on the inner wall of the furnace body; the connecting component includes a casting core seat and a single furnace core, the casting core seat is fixedly installed on the bottom of the inner wall of the furnace body, and several groups of single furnace cores are arranged horizontally on the top of the casting core seat; the multi-segment design of the single furnace core facilitates replacement and maintenance, thereby saving replacement time and improving work efficiency, and the casting core seat provides support for the single furnace core to ensure stable use of the single furnace core.
[0006] Preferably, the ventilation mechanism includes a second flange, a makeup air window, and a pyrolysis gas inlet. The second flange is fixedly installed on the top of the furnace body surface, the makeup air window is fixedly installed on the top of the furnace body surface and located on one side of the second flange, and the pyrolysis gas inlet is fixedly installed on the side of the furnace body surface away from the second flange. In this scheme, the combined use of the second flange, the makeup air window, and the pyrolysis gas inlet enables ventilation inside the furnace body, thereby allowing the heat generated when a single furnace core is used to be smoothly discharged, thus achieving temperature control.
[0007] Preferably, the sealing mechanism includes a door frame, a circular door leaf, and bolts. The door frame is fixedly installed on one side of the furnace body, and the circular door leaf is rotatably installed on the inner wall of the door frame by bolts. In this solution, the door frame can provide support for the furnace body, and the circular door leaf can be quickly installed onto the surface of the door frame by bolts, thereby saving installation time. The circular door leaf allows users to open it at any time and clean and maintain the single furnace core.
[0008] Preferably, the maintenance mechanism includes a pivot pin, a handle, and an observation window. The pivot pin is fixedly installed on both sides of the door frame away from the furnace body. The side of the pivot pin away from the door frame is rotatably installed with the circular door leaf. The handle is fixedly installed on both sides of the circular door leaf away from the furnace body. The observation window is located on one side of the surface of the circular door leaf. In this design, the pivot pin makes the circular door leaf more stable when opening and closing, the handle makes it convenient for the user to open the circular door leaf, and the observation window allows the user to observe the condition inside the furnace body at any time to know whether the inside of the furnace body needs to be cleaned or replaced.
[0009] Preferably, the exhaust mechanism includes a third flange, a cold air valve, a first shaft bracket, a valve, a second shaft bracket, and a cylinder. The third flange is fixedly installed on one side of the furnace body surface. The cold air valve is fixedly installed on one side of the furnace body via the third flange. The top of the cold air valve is fixedly installed to the first shaft bracket. The inner wall of the first shaft bracket is rotatably installed to the valve. The second shaft bracket is fixedly installed to the bottom of the cold air valve. One side of the second shaft bracket is rotatably installed to the cylinder. The output end of the cylinder is rotatably installed to the bottom of the valve. In this scheme, the coordinated use of the third flange, cold air valve, first shaft bracket, valve, second shaft bracket, and cylinder can achieve automated opening and closing functions under user control, thereby enabling users to improve usage efficiency through controlled opening and closing.
[0010] Preferably, the insulation component includes a fourth flange, an insulation layer, and a fifth flange, and several sets of these components are provided. The fourth flanges are fixedly installed on one side of the furnace body surface. The insulation layer is attached to the inner wall of the furnace body, and the single furnace core is located on the inner wall of the insulation layer. A cavity for residual heat flow is provided between the insulation layer and the single furnace core. The fifth flange is fixedly installed on the furnace body at the end away from the door frame via the first flange. In this design, the fourth flange can be connected to some detection devices to monitor the pressure and temperature of the furnace body in real time to ensure normal operation. The insulation layer provides insulation, preventing the temperature of the single furnace core from being conducted to the furnace body and causing its surface to become excessively hot. Simultaneously, the temperature isolation also reduces heat dissipation, allowing the hot air to be recovered and reused.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. The feedback furnace described in this utility model, through the setting of a castable core seat, a single furnace core, a second flange, a make-up air window, and a pyrolysis gas inlet, enables the multi-section design of the single furnace core to facilitate replacement and maintenance, thereby saving replacement time and improving work efficiency. The castable core seat provides support for the single furnace core to ensure its stable use. The combined use of the second flange, the make-up air window, and the pyrolysis gas inlet enables ventilation inside the furnace body, allowing the heat generated during the use of the single furnace core to be smoothly discharged, thereby achieving temperature control.
[0013] 2. The feedback furnace described in this utility model, through the arrangement of a door frame, a circular door leaf, bolts, axle pins, a handle, and an observation window, enables the door frame to provide support for the door frame, the circular door leaf to be quickly installed onto the door frame surface via bolts, thereby saving installation time, the circular door leaf to allow users to open it at any time for cleaning and maintenance of the single furnace core, the axle pin to make the circular door leaf more stable when opening and closing, the handle to facilitate users to open the circular door leaf, and the observation window to allow users to observe the internal condition of the furnace body at any time to know whether the internal condition of the furnace body needs cleaning and replacement. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings.
[0015] Figure 1 This is a front perspective view of the present invention;
[0016] Figure 2 This is a rear view of the present invention;
[0017] Figure 3 This is a partial sectional view of the present invention;
[0018] Figure 4 This is a front view structural diagram of the present invention.
[0019] Legend:
[0020] 1. Furnace body; 2. First flange; 3. Support leg; 4. Connecting assembly; 41. Castable core seat; 42. Single furnace core; 5. Ventilation mechanism; 51. Second flange; 52. Make-up air window; 53. Pyrolysis gas inlet; 6. Sealing mechanism; 61. Door frame; 62. Circular door leaf; 63. Bolt; 7. Maintenance mechanism; 71. Shaft pin; 72. Handle; 73. Observation window; 8. Exhaust mechanism; 81. Third flange; 82. Cold air valve; 83. First shaft bracket; 84. Valve; 85. Second shaft bracket; 86. Cylinder; 9. Insulation assembly; 91. Fourth flange; 92. Insulation layer; 93. Fifth flange. Detailed Implementation
[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] Specific implementation examples are given below.
[0023] like Figures 1 to 4As shown, the feedback furnace described in this embodiment of the present invention includes a furnace body 1; first flanges 2 are fixedly installed on both sides of the furnace body 1, support legs 3 are fixedly installed on the bottom of the surface of the furnace body 1, a connecting assembly 4 is provided on the inner wall of the furnace body 1, and a ventilation mechanism 5 is provided on the top of the surface of the furnace body 1; a sealing mechanism 6 is provided at one end of the furnace body 1, and a maintenance mechanism 7 is provided at the end of the furnace body 1 near the sealing mechanism 6; an exhaust mechanism 8 is provided on one side of the surface of the furnace body 1, and a heat insulation assembly 9 is provided on the inner wall of the furnace body 1; the connecting assembly 4 includes a casting core seat 41 and a single furnace core 42, the casting core seat 41 is fixedly installed on the bottom of the inner wall of the furnace body 1, and several sets of single furnace cores 42 are provided. The dry-type single furnace core 42 is arranged horizontally on top of the castable core seat 41; preferably, the ventilation mechanism 5 includes a second flange 51, a make-up air window 52, and a pyrolysis gas inlet 53. The second flange 51 is fixedly installed on the top of the furnace body 1 surface, the make-up air window 52 is fixedly installed on the top of the furnace body 1 surface and located on one side of the second flange 51, and the pyrolysis gas inlet 53 is fixedly installed on the side of the furnace body 1 surface away from the second flange 51. The sealing mechanism 6 includes a door frame 61, a circular door leaf 62, and bolts 63. The door frame 61 is fixedly installed on one side of the furnace body 1, and the circular door leaf 62 is rotatably installed on the inner wall of the door frame 61 by bolts 63. The maintenance mechanism 7 includes a shaft pin 71 and a handle. Handle 72 and observation window 73, pivot pin 71 are fixedly installed on both sides of door frame 61 away from furnace body 1, pivot pin 71 is rotatably installed on the side away from door frame 61 with circular door leaf 62, handle 72 is fixedly installed on both sides of circular door leaf 62 away from furnace body 1, observation window 73 is set on one side of circular door leaf 62 surface, exhaust mechanism 8 includes third flange 81, cold air valve 82, first shaft bracket 83, valve 84, second shaft bracket 85 and cylinder 86, third flange 81 is fixedly installed on one side of furnace body 1 surface, cold air valve 82 is fixedly installed on one side of furnace body 1 through third flange 81, top of cold air valve 82 is fixedly installed with first shaft bracket 83, first shaft bracket 84 is fixedly installed with first shaft bracket 85. The inner wall of the furnace body 84 is rotatably mounted to the valve 84. The second shaft bracket 85 is fixedly mounted to the bottom of the cold air valve 82. One side of the second shaft bracket 85 is rotatably mounted to the cylinder 86. The output end of the cylinder 86 is rotatably mounted to the bottom of the valve 84. The insulation component 9 includes a fourth flange 91, an insulation layer 92, and a fifth flange 93, and several sets are provided. Several sets of fourth flanges 91 are fixedly mounted to one side of the surface of the furnace body 1. The insulation layer 92 is attached to the inner wall of the furnace body 1. The single furnace core 42 is located on the inner wall of the insulation layer 92. A cavity for residual heat circulation is provided between the insulation layer 92 and the single furnace core 42. The fifth flange 93 is fixedly mounted to the end of the furnace body 1 away from the door frame 61 through the first flange 2.
[0024] like Figures 1 to 4As shown, the multi-section design of the single furnace core 42 facilitates replacement and maintenance, saving replacement time and improving work efficiency. The castable core seat 41 provides support for the single furnace core 42 to ensure its stable use. The combined use of the second flange 51, the air supply window 52, and the pyrolysis gas inlet 53 enables ventilation inside the furnace body 1, allowing the heat generated during the use of the single furnace core 42 to be smoothly discharged, thus achieving temperature control. The door frame 61 provides support, and the circular door leaf 62 can be quickly installed onto the surface of the door frame 61 using bolts 63, saving installation time. The circular door leaf 62 allows users to open it at any time for cleaning and maintenance of the single furnace core 42. The shaft pin 71 makes the circular door leaf 62 more stable when opening and closing, and the handle 72 allows for easy... The user can open the circular door 62, and the observation window 73 allows the user to observe the internal condition of the furnace body 1 at any time to know whether the internal condition of the furnace body 1 needs cleaning and replacement. The cooperation of the third flange 81, cold air valve 82, first shaft bracket 83, valve 84, second shaft bracket 85 and cylinder 86 can realize the automatic opening and closing function by the user, so that the user can control the opening and closing of 94 through 96 to improve the efficiency of use. The fourth flange 91 can be connected to some detection devices to detect the pressure and temperature of the furnace body 1 in real time to ensure the normal use of the furnace body 1. The heat insulation layer 92 can play a heat preservation role to prevent the temperature of the single furnace core 42 from being conducted to the furnace body 1 and making its surface too hot. At the same time, the temperature isolation can also reduce the temperature dissipation, so that the heat can be recovered and reused.
[0025] Working principle: During operation, multiple furnace bodies 1 are first assembled using the first flange 2. Then, the fifth flange 93, second flange 51, air supply window 52, pyrolysis gas inlet 53, and fourth flange 91 are connected to external pipes and instruments. Once in use, a large amount of heat is generated within the single furnace core 42. This heat flows through the gap between the single furnace core 42 and the insulation layer 92. The user must use the air supply window 52 to extract the heat from this gap, thus dissipating heat from the single furnace core 42. The insulation layer 92 prevents high temperatures from being conducted to the furnace body 1. The surface of the furnace body 1 causes the furnace body 1 to heat up. During use, the user can observe the internal condition of the furnace body 1 through the observation window 73. When it is necessary to replace the single furnace core 42, the user can open the circular door 62 through the handle 72 and replace the single furnace core 42, which facilitates the replacement of the inner core. At the same time, the user can start the cylinder 86 to push the valve 84 to rotate around the first shaft 83, thereby opening the cold air valve 82 to achieve ventilation. The fourth flange 91 can be connected to some detection instruments to monitor the working condition inside the furnace body 1 in real time.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A feedback furnace, comprising a furnace body (1); characterized in that: The furnace body (1) is fixedly installed with first flanges (2) on both sides, and support legs (3) are fixedly installed at the bottom of the surface of the furnace body (1). The inner wall of the furnace body (1) is provided with connecting components (4), and the top of the surface of the furnace body (1) is provided with ventilation mechanism (5). The connecting component (4) includes a casting core seat (41) and a single furnace core (42). The casting core seat (41) is fixedly installed at the bottom of the inner wall of the furnace body (1). Several sets of single furnace cores (42) are provided, and the several sets of single furnace cores (42) are arranged horizontally on the top of the casting core seat (41). The ventilation mechanism (5) includes a second flange (51), a makeup air window (52), and a pyrolysis gas inlet (53). The second flange (51) is fixedly installed on the top of the surface of the furnace body (1). The makeup air window (52) is fixedly installed on the top of the surface of the furnace body (1) and located on one side of the second flange (51). The pyrolysis gas inlet (53) is fixedly installed on the side of the surface of the furnace body (1) away from the second flange (51).
2. The feedback furnace according to claim 1, characterized in that: A sealing mechanism (6) is provided at one end of the furnace body (1), and a maintenance mechanism (7) is provided at the end of the furnace body (1) near the sealing mechanism (6).
3. The feedback furnace according to claim 2, characterized in that: An exhaust mechanism (8) is provided on one side of the surface of the furnace body (1), and a heat insulation component (9) is provided on the inner wall of the furnace body (1).
4. The feedback furnace according to claim 3, characterized in that: The sealing mechanism (6) includes a door frame (61), a circular door leaf (62) and bolts (63). The door frame (61) is fixedly installed on one side of the furnace body (1), and the circular door leaf (62) is rotatably installed on the inner wall of the door frame (61) by bolts (63).
5. The feedback furnace according to claim 4, characterized in that: The maintenance mechanism (7) includes a pivot pin (71), a handle (72) and an observation window (73). The pivot pin (71) is fixedly installed on both sides of the door frame (61) away from the furnace body (1). The side of the pivot pin (71) away from the door frame (61) is rotatably installed with the circular door leaf (62). The handle (72) is fixedly installed on both sides of the circular door leaf (62) away from the furnace body (1). The observation window (73) is located on one side of the surface of the circular door leaf (62).
6. The feedback furnace according to claim 5, characterized in that: The exhaust mechanism (8) includes a third flange (81), a cold air valve (82), a first shaft bracket (83), a valve (84), a second shaft bracket (85), and a cylinder (86). The third flange (81) is fixedly installed on one side of the furnace body (1). The cold air valve (82) is fixedly installed on one side of the furnace body (1) through the third flange (81). The top of the cold air valve (82) is fixedly installed with the first shaft bracket (83). The inner wall of the first shaft bracket (83) is rotatably installed with the valve (84). The second shaft bracket (85) is fixedly installed at the bottom of the cold air valve (82). One side of the second shaft bracket (85) is rotatably installed with the cylinder (86). The output end of the cylinder (86) is rotatably installed with the bottom of the valve (84).
7. The feedback furnace according to claim 6, characterized in that: The insulation component (9) includes a fourth flange (91), an insulation layer (92), and a fifth flange (93). Several sets of the fourth flange (91) are fixedly installed on one side of the surface of the furnace body (1). The insulation layer (92) is attached to the inner wall of the furnace body (1). The single furnace core (42) is located on the inner wall of the insulation layer (92). A cavity for residual heat flow is provided between the insulation layer (92) and the single furnace core (42). The fifth flange (93) is fixedly installed at the end of the furnace body (1) away from the door frame (61) through the first flange (2).