Automatic furnace door of furnace
By designing an automated furnace automatic furnace door, combined with a rotating mechanism and a central controller, the safety hazards of the furnace door structure of traditional furnace equipment are solved, the rapid, safe and automatic operation of the furnace door is achieved, and the service life is extended. Improves safety performance and energy saving effects.
Patent Information
- Application Number
- CN202421786047.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The furnace door structure of traditional furnace equipment has great safety risks, especially during high-temperature operation, which can easily cause accidents such as explosion, fire outflow, and high-temperature radiation, threatening personal and property safety.
Design an automatic furnace door of the furnace kiln, which uses automated control to realize the opening and closing of the furnace door. Combined with the rotating mechanism and the central controller, it realizes the automatic operation of the furnace door, and adds fire-resistant and thermal insulation materials to the furnace door and sets up seals. Filling to reduce heat energy loss.
It realizes the rapid, safe and automatic opening and closing of the furnace door, avoids safety hazards caused by human operation, extends the service life of the furnace door, and reduces thermal energy loss through sealing fillers, improves safety performance and energy saving effects.
Smart Images
Figure CN222438508U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of furnaces and kilns, in particular to an automatic furnace door of a furnace and kiln. Background Art
[0002] In traditional solid fuel-burning boilers, kilns, and related burners and other thermal energy application equipment, the traditional furnace door structure is commonly cast iron or welded plate doors, with a hinge structure installed at one end and a handle door buckle at the other end. This type of furnace door is simple, convenient, and quick to open and close, but it has great safety hazards, especially during the high-temperature operation of the furnace equipment. When it is necessary to stop the furnace door for maintenance due to furnace equipment failure or slag removal, the furnace door is too simple. Once the operation is not careful, it is very easy to cause explosions, fire leakage, high-temperature radiation, etc., which may cause personal injury accidents, posing a great potential threat to people's lives and property. Utility Model Content
[0003] In order to solve the problems existing in the furnace doors of equipment such as boilers and kilns, the utility model designs an automatic furnace door for the furnace. The opening and closing of the furnace door are all automatically controlled, with a high degree of automation and excellent safety performance. The specific technical solutions are as follows:
[0004] An automatic furnace door of a furnace comprises a refractory furnace wall, the refractory furnace wall comprises a furnace wall body, a first insulation layer laid on the outer side of the furnace wall body and a main shell arranged on the outer side of the first insulation layer, a rotating mechanism is fixed on the main shell, a slide rail is installed on the rotating mechanism, the slide rail is connected to the furnace door assembly through an opening and closing actuator, and the opening and closing actuator is electrically connected to a central controller.
[0005] Preferably, the rotating mechanism comprises a hinge and a shaft sleeve fixedly connected to the main housing, the hinge is located above the shaft sleeve, the shaft sleeve comprises an upper shaft sleeve and a lower shaft sleeve, a rotating shaft is arranged in the shaft sleeve, the rotating shaft is connected to one end of the slide rail, an adjustment joint is arranged at the other end of the slide rail, the hinge is connected to the adjustment joint via an inclined rod, and the connection position between the slide rail and the rotating shaft is located between the upper shaft sleeve and the lower shaft sleeve;
[0006] The top end of the rotating shaft is connected to a deflection actuator, the deflection actuator is fixedly connected to the main housing through a gear box, and the deflection actuator is electrically connected to a central controller.
[0007] Furthermore, the deflection actuator includes a reduction motor, the output shaft of the reduction motor is connected to a driving gear and an angle sensor in a gear box, the driving gear is meshed with a driven gear, the driven gear is connected to a rotating shaft, and the angle sensor is electrically connected to a central controller.
[0008] Furthermore, the upper portion of the rotating shaft is connected to one end of an opening and closing actuator, and the other end of the opening and closing actuator is connected to the furnace door assembly.
[0009] Furthermore, the furnace door assembly includes a furnace door and a furnace door support plate, the furnace door is fixedly connected to the furnace door support plate, a protrusion is provided on the top of the furnace door support plate, the protrusion is connected to the opening and closing actuator, and a plurality of axles are provided on the furnace door support plate, the axles are connected to pulleys, and the pulleys are respectively arranged on the upper and lower sides of the slide rail and are slidably connected thereto.
[0010] Furthermore, the furnace door includes a furnace door shell connected to the furnace door support plate, and a second insulation layer and refractory concrete are sequentially arranged on the inner side of the furnace door shell.
[0011] Furthermore, a flame sensor sleeve and a temperature sensor sleeve are provided through the furnace door, a flame sensor and a temperature sensor are installed in the flame sensor sleeve and the temperature sensor sleeve respectively, and the flame sensor and the temperature sensor are electrically connected to the central controller.
[0012] Furthermore, a furnace door opening is provided on the refractory furnace wall, a furnace door frame is provided on the outer edge of the furnace door opening, and the furnace door frame is fixedly connected to the main shell.
[0013] Furthermore, a sealing filler is laid on the edge of the furnace door shell.
[0014] Furthermore, an open position sensor and a closed position sensor are provided at the bottom of the opening and closing actuator, and both the open position sensor and the closed position sensor are proximity switches, and the open position sensor and the closed position sensor are electrically connected to the central controller respectively.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The utility model realizes pushing and pulling the furnace door by setting a central controller to control the opening and closing actuator, which can quickly and safely realize automatic opening and closing of the furnace door. At the same time, with the rotating mechanism, the furnace door after opening can be deflected to the left or right by a certain angle to avoid blocking the furnace door entrance, so as to facilitate cleaning of ash and equipment inspection and maintenance; reliable refractory and heat-insulating materials are added in the furnace door to effectively extend the service life of the furnace door. At the same time, sealing fillers are provided at the connection between the furnace door and the furnace door frame to achieve better fit and sealing, effectively reduce heat energy loss, and avoid high-temperature burns to the human body. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0018] Figure 1 The utility model is a structural schematic diagram of an automatic furnace door of a furnace.
[0019] Figure 2 The utility model is a structural schematic diagram of a furnace door assembly of an automatic furnace door of a furnace.
[0020] Figure 3 The utility model is a structural schematic diagram of a rotary mechanism of an automatic furnace door of a furnace.
[0021] Figure 4 The utility model is a schematic diagram of the control principle of the central controller of the automatic furnace door of the furnace.
[0022] Figure 5 It is a structural schematic diagram of a deflection actuator of an automatic furnace door of a furnace of the utility model.
[0023] In the figure: 1. furnace wall body; 2. first insulation layer; 3. main shell; 4. opening and closing actuator; 5. central controller; 6. hinge; 7. bushing; 8. rotating shaft; 9. slide rail; 10. adjustment joint; 11. inclined rod; 12. furnace door support plate; 13. pulley; 14. furnace door shell; 15. second insulation layer; 16. refractory concrete; 17. flame sensor sleeve; 18. temperature sensor sleeve; 19. flame sensor; 20. temperature sensor; 21. furnace door opening; 22. furnace door frame; 23. deflection actuator; 24. axle; 25. sealing packing; 26. reduction motor; 27. driven gear; 28. driving gear; 29. angle sensor; 30. open position sensor; 31. closed position sensor; 32. gear box; 71. upper bushing; 72. lower bushing. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0025] See also Figures 1 to 5 , an embodiment provided by the utility model is as follows:
[0026] An automatic furnace door of a furnace comprises a refractory furnace wall, the refractory furnace wall comprises a furnace wall body 1, a first insulation layer 2 laid on the outer side of the furnace wall body 1, and a main shell 3 arranged on the outer side of the first insulation layer 2, a rotating mechanism is fixed on the main shell 3, the rotating mechanism is connected to the furnace door assembly through an opening and closing actuator 4, and the rotating mechanism and the opening and closing actuator 4 are electrically connected to a central controller 5. The first insulation layer 2 can ensure that the outer surface temperature of the main shell 3 is not higher than 50°C, reduce heat dissipation loss, avoid human body burns, and achieve the purpose of safety and energy saving.
[0027] Preferably, the rotating mechanism includes a hinge 6 and a sleeve 7 fixedly connected to the main shell 3, the hinge 6 is located above the sleeve 7, the sleeve 7 includes an upper sleeve 71 and a lower sleeve 72, a rotating shaft 8 is provided in the sleeve 7, the rotating shaft 8 is connected to one end of the slide rail 9, and an adjustment joint 10 is provided at the other end of the slide rail 9. The hinge 6 is connected to the adjustment joint 10 through a diagonal rod 11, and the connection position between the slide rail 9 and the rotating shaft 8 is located between the upper sleeve 71 and the lower sleeve 72.
[0028] The top end of the rotating shaft 8 is connected to the deflection actuator 23, which is fixedly connected to the main housing 3 through the gear box 32, and the deflection actuator 23 is electrically connected to the central controller 5. Specifically, the deflection actuator 23 includes a reduction motor 26, the output shaft of the reduction motor 26 is connected to the driving gear 28 and the angle sensor 29 in the gear box 32, the driving gear 28 is meshed with the driven gear 27, and the driven gear 27 is connected to the rotating shaft 8.
[0029] At the same time, the upper part of the rotating shaft 8 is connected to one end of the opening and closing actuator 4, and the other end of the opening and closing actuator 4 is connected to the furnace door assembly. Specifically, the furnace door assembly includes a furnace door and a furnace door support plate 12, the furnace door is fixedly connected to the furnace door support plate 12, a protrusion is provided on the top of the furnace door support plate 12, and the protrusion is connected to the opening and closing actuator 4, and a plurality of axles 24 are provided on the furnace door support plate 12, and the axles 24 are connected to the pulleys 13, and the pulleys 13 are respectively arranged on the upper and lower sides of the slide rail 9 and are slidably connected thereto. Further, the furnace door includes a furnace door shell 14 connected to the furnace door support plate 12, and a second insulation layer 15 and refractory concrete 16 are arranged in sequence on the inner side of the furnace door shell 14. When the furnace door is closed, the inner side of the refractory concrete 16 is flush with the inner side of the furnace chamber.
[0030] In addition, a flame sensor sleeve 17 and a temperature sensor sleeve 18 are provided throughout the furnace door, and a flame sensor 19 and a temperature sensor 20 are installed in the flame sensor sleeve 17 and the temperature sensor sleeve 18, respectively, and the flame sensor 19 and the temperature sensor 20 are electrically connected to the central controller 5. The flame sensor 19 is used to detect the flame intensity in the furnace, and the temperature sensor 20 is used to sense the real-time temperature in the furnace and transmit the relevant signal to the central controller 5. Further, a furnace door opening 21 is provided on the refractory furnace wall, and a furnace door frame 22 is provided on the outer edge of the furnace door opening 21, and the furnace door frame 22 is fixedly connected to the main shell 3. At the same time, a sealing filler 25 is laid on the edge of the furnace door shell 14, and the sealing filler 25 is close to the furnace door frame 22 and is located between the furnace door frame 22 and the furnace door shell 14, which plays a role in sealing and heat preservation.
[0031] Furthermore, an open position sensor 30 and a closed position sensor 31 are provided at the bottom of the opening and closing actuator 4. Both the open position sensor 30 and the closed position sensor 31 are proximity switches for respectively identifying the position electrical signals of the furnace door being in the open position or the closed position. When the furnace door approaches the sensing surface of the proximity switch and the distance between the object and the sensing surface is the action distance, the proximity switch is actuated and transmitted to the central controller 5 for comparison and identification to control the execution of the next action.
[0032] The opening and closing actuator 4 is a well-known technology and can be a cylinder. The electromagnetic reversing valve controls the direction of the compressed air inlet to drive the piston and piston rod of the cylinder to push or pull to open or close the furnace door. Specifically, the open position sensor 30 and the closed position sensor 31 are two magnetic induction sensors, which are fixed to the housing (i.e., the cylinder housing) of the opening and closing actuator 4 with buckles or straps. The piston and the piston rod are pushed to move together by compressed air inside the opening and closing actuator 4. The piston is provided with a magnetic ring, which is stuck in the piston groove and moves with the piston. When the piston moves to the position of the two position sensors across the cylinder wall, the open position or closed position signal can be sensed respectively.
[0033] The opening and closing actuator 4 can open or close the furnace door by pushing and pulling the furnace door assembly. The angle sensor 29, the open position sensor 30, the closed position sensor 31, the flame sensor 19, and the temperature sensor 20 feed back the sensed related signals to the central controller 5, and the central controller 5 outputs control signals according to the preset control program to control the opening, closing and rotation of the furnace door.
[0034] Working principle:
[0035] When the furnace door assembly is closed, the central controller 5 determines whether the center of the furnace door assembly and the furnace door frame 22 are aligned based on the position signal of the angle sensor 29. When the alignment is correct, the central controller 5 outputs a control signal to control the operation of the opening and closing actuator 4. The opening and closing actuator 4 pushes the sealing filler 25 attached to the furnace door assembly along the slide rail 9 to lean against and press the furnace door frame 22. At this time, the closed position sensor 31 just senses the position of the piston magnetic ring and stops the action, thereby achieving the effect of reliable sealing of the closed furnace door.
[0036] When the furnace door assembly is opened, the central controller 5 outputs a control signal to control the opening and closing actuator 4 to push the furnace door assembly with the sealing filler 25 according to the real-time data detected by the flame sensor 19 and the temperature sensor 20. If the flame intensity and temperature are within the safe value range, the central controller 5 will leave the furnace door frame 22 along the slide rail 9, and the opening position sensor 30 will sense the position of the piston magnetic ring. The central controller 5 outputs a signal to drive the deflection actuator 23 to drive the furnace door assembly together with the slide rail 9 to deflect to the side of the furnace door to avoid blocking the furnace door, so as to facilitate the maintenance of the furnace equipment.
[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. An automatic furnace door of a furnace, characterized in that: The invention comprises a refractory furnace wall, the refractory furnace wall comprising a furnace wall body (1), a first thermal insulation layer (2) laid on the outer side of the furnace wall body (1), and a main shell (3) arranged on the outer side of the first thermal insulation layer (2), a rotating mechanism is fixed on the main shell (3), a slide rail (9) is installed on the rotating mechanism, the slide rail (9) is connected to the furnace door assembly through an opening and closing actuator (4), and the opening and closing actuator (4) is electrically connected to a central controller (5).
2. The automatic furnace door of a furnace according to claim 1, characterized in that: The rotating mechanism comprises a hinge (6) and a shaft sleeve (7) fixedly connected to the main housing (3); the hinge (6) is located above the shaft sleeve (7); the shaft sleeve (7) comprises an upper shaft sleeve (71) and a lower shaft sleeve (72); a rotating shaft (8) is provided in the shaft sleeve (7); the rotating shaft (8) is connected to one end of a slide rail (9); an adjustment joint (10) is provided at the other end of the slide rail (9); the hinge (6) is connected to the adjustment joint (10) via an inclined tie rod (11); and a connection position between the slide rail (9) and the rotating shaft (8) is located between the upper shaft sleeve (71) and the lower shaft sleeve (72); The top end of the rotating shaft (8) is connected to a deflection actuator (23), the deflection actuator (23) is fixedly connected to the main housing (3) via a gear box (32), and the deflection actuator (23) is electrically connected to a central controller (5).
3. The automatic furnace door of a furnace according to claim 2, characterized in that: The deflection actuator (23) comprises a reduction motor (26), the output shaft of the reduction motor (26) being connected to a driving gear (28) and an angle sensor (29) in a gear box (32), the driving gear (28) being meshed with a driven gear (27), the driven gear (27) being connected to a rotating shaft (8), and the angle sensor (29) being electrically connected to a central controller (5).
4. The automatic furnace door of a furnace according to claim 2, characterized in that: The upper part of the rotating shaft (8) is connected to one end of the opening and closing actuator (4), and the other end of the opening and closing actuator (4) is connected to the furnace door assembly.
5. The automatic furnace door of a furnace according to claim 4, characterized in that: The furnace door assembly comprises a furnace door and a furnace door support plate (12), the furnace door being fixedly connected to the furnace door support plate (12), a raised portion being provided on the top of the furnace door support plate (12), the raised portion being connected to the opening and closing actuator (4), a plurality of wheel axles (24) being provided on the furnace door support plate (12), the wheel axles (24) being connected to pulleys (13), the pulleys (13) being respectively arranged on upper and lower sides of a slide rail (9) and being slidably connected thereto.
6. The automatic furnace door of claim 5, characterized in that: The furnace door comprises a furnace door shell (14) connected to the furnace door support plate (12), and a second thermal insulation layer (15) and refractory concrete (16) are sequentially arranged on the inner side of the furnace door shell (14).
7. The automatic furnace door of claim 6, characterized in that: A flame sensor sleeve (17) and a temperature sensor sleeve (18) are provided through the furnace door, a flame sensor (19) and a temperature sensor (20) are installed in the flame sensor sleeve (17) and the temperature sensor sleeve (18), respectively, and the flame sensor (19) and the temperature sensor (20) are electrically connected to the central controller (5).
8. The automatic furnace door of claim 7, characterized in that: A furnace door opening (21) is provided on the refractory furnace wall, a furnace door frame (22) is provided on the outer edge of the furnace door opening (21), and the furnace door frame (22) is fixedly connected to the main shell (3).
9. The automatic furnace door of claim 6, characterized in that: The edge of the furnace door shell (14) is provided with sealing filler (25).
10. The automatic furnace door of claim 4, characterized in that: An open position sensor (30) and a closed position sensor (31) are provided at the bottom of the opening and closing actuator (4); the open position sensor (30) and the closed position sensor (31) are both proximity switches; the open position sensor (30) and the closed position sensor (31) are electrically connected to the central controller (5), respectively.