Automatic flue damper
Through the design of automatic flue gate plates, the coordinated movement of the gate plate and the support plate is controlled by using the drive device to achieve reliable sealing and safe and efficient production of the flue gate plates, solving the problem of inadequate seating of the flue gate plates and improving production efficiency.
Patent Information
- Application Number
- CN202422424995.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-09
AI Technical Summary
When the flue gate of the existing roasting furnace is closed, it is easy to be seated inadequate due to foreign matter on the end surface of the support plate, resulting in inconvenience in production and safety hazards.
An automatic flue gate is designed to control the movement of the gate and the support plate through the drive device to ensure that the support plate moves downward when closed and triggers the normally closed contact assembly, realize sealing, and clean foreign matter on the support plate after cooling.
It solves the problem of inadequate seating of the flue gate, improves production efficiency, avoids safety hazards caused by high temperature cleaning of foreign objects, and simplifies the operation process.
Smart Images
Figure CN223179324U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a flue damper, in particular to an automatic flue damper. Background Art
[0002] The main purpose of a roasting furnace is to remove volatiles, char the binder, stabilize the product shape, and improve the product's electrical conductivity and various physical and chemical properties. A roasting furnace can significantly reduce sintering temperatures and energy consumption, significantly contributing to environmental protection, improved efficiency, and shortened sintering time.
[0003] The existing roasting furnace includes a flue damper that can be raised and lowered to open and close the furnace. When the flue damper moves downward to close the furnace, the lower end surface of the flue damper contacts the upper end surface of the support plate, and the support plate is fixedly arranged on the roasting furnace. During use, when the fired products are taken out from the opened furnace, slag and other foreign matter are likely to fall on the support plate. Due to the high temperature, it is not convenient to clean them in time. When the flue damper moves downward to close the furnace, the lower end surface of the flue damper contacts the upper end surface of the support plate. Foreign matter on the upper end surface of the support plate will affect the seating of the flue damper. Tools need to be used to clean the foreign matter on the upper end surface of the support plate before the flue damper can be completely seated, which brings inconvenience to production. Utility Model Content
[0004] The utility model aims to provide an automatic flue damper, which solves the problem in the prior art that the flue damper cannot be seated properly.
[0005] The utility model adopts the following technical scheme: an automatic flue gate, comprising a roasting furnace body with a furnace chamber opened on the front side, a gate plate slidingly provided on the front side of the roasting furnace body in the up and down directions, a driving device provided above the roasting furnace body, the output end of the driving device being connected to the gate plate, driving the gate plate to move up and down to open or close the furnace chamber of the roasting furnace, a supporting plate provided on the front side of the roasting furnace body below the furnace chamber, when the gate plate moves upward to open the furnace chamber, the supporting plate rises upward and is flush with the inner bottom wall of the furnace chamber, when the gate plate moves downward to close the furnace chamber, the supporting plate is pushed downward by the gate plate, and a normally closed contact assembly for controlling the driving device to stop is provided on the front side of the roasting furnace body below the supporting plate.
[0006] Furthermore, the front side of the roasting furnace body is fixedly provided with an upper frame and a lower frame, the upper frame and the lower frame are fixedly provided, the gate plate is slidably provided in the upper frame and the lower frame along the up and down directions, a supporting spring is fixedly provided between the lower end surface of the support plate and the inner bottom wall of the lower frame, a limiting block is fixedly provided on the rear side of the support plate, and a limiting groove is provided on the front side of the roasting furnace body corresponding to the limiting block along the up and down directions.
[0007] Further, the normally-closed contact assembly includes a cylinder fixedly arranged on the front side surface of the lower frame body, and a guide post fixedly arranged on the right side surface of the supporting plate corresponding to the cylinder. A contact is slidably arranged in the cylinder in the vertical direction. A return spring is fixedly arranged between the contact and the inner bottom wall of the cylinder. A contact groove is formed on the upper end surface of the contact, and a contact point is fixedly arranged on the inner side wall of the cylinder at a position corresponding to the contact groove.
[0008] Further, the driving device includes a threaded rod fixedly arranged at the bottom end on the upper end surface of the gate plate. A driving sleeve is threadedly connected to the outer surface of the threaded rod. The driving sleeve is rotatably connected to the ejector rod of the upper frame body. A worm gear is coaxially fixedly arranged on the outer surface of the driving sleeve.
[0009] Further, a motor is fixedly arranged on the ejector rod of the upper frame body. A worm is fixedly arranged on the output shaft of the motor. The worm meshes with the worm gear.
[0010] Further, a housing is fixedly arranged on the upper end surface of the ejector rod of the upper frame body. The worm and the worm gear are both located inside the housing, and the worm is rotatably connected to the housing. The top end of the threaded rod penetrates through the upper end surface of the housing.
[0011] Further, a receiving groove is formed on the inner bottom wall of the lower frame body. The supporting spring is located inside the receiving groove and is fixedly arranged on the inner bottom wall of the receiving groove.
[0012] Further, a baffle plate is fixedly arranged on the lower end surface of the supporting plate, and the rear side surface of the baffle plate is attached to the front side surface of the lower frame body.
[0013] Further, an inclined surface is formed on the upper end surface of the supporting plate.
[0014] In the present utility model, by providing a gate plate and a supporting plate, when in use of the device, when the gate plate moves upward to open the furnace chamber, the supporting plate rises upward to be flush with the inner bottom wall of the furnace chamber. When the gate plate moves downward to close the furnace chamber, the supporting plate is pushed by the gate plate to move downward. The supporting plate moves downward by a set distance to open the normally-closed contact assembly arranged below, and the driving device stops operating. The gate plate seals the furnace chamber to achieve closing. When the gate plate moves downward to close the furnace chamber, it will be pushed by the gate plate to move downward. Therefore, the presence of foreign objects on the upper end surface of the supporting plate will not affect the proper seating of the gate plate. After waiting for the roasting furnace to cool down completely, the supporting plate can be cleaned, improving the production efficiency. Description of the Drawings
[0015] Figure 1 is a three-dimensional structural schematic diagram of the state where the gate plate of the present utility model is lifted upward to open the furnace chamber;
[0016] Figure 2 is a three-dimensional structural schematic diagram of the state where the gate plate of the present utility model is seated downward to close the furnace chamber;
[0017] Figure 3For the present utility model Figure 1 Schematic enlarged view of the structure at position A in
[0018] Figure 4 For the present utility model Figure 2 Schematic enlarged view of the structure at position B in
[0019] Figure 5 Front view structure schematic diagram of the present utility model;
[0020] Figure 6 Three - dimensional structure schematic diagram of the separation state between the bearing plate and the roasting furnace body in the present utility model;
[0021] Figure 7 Three - dimensional structure schematic diagram of the supporting plate in the present utility model;
[0022] Figure 8 Three - dimensional structure schematic diagram of the interior of the upper frame body in the present utility model;
[0023] Figure 9 Three - dimensional structure schematic diagram of the interior of the cylinder body in the present utility model;
[0024] Figure 10 Three - dimensional structure schematic diagram of the contact point in the present utility model.
[0025] In the figure, 1, roasting furnace body; 2, gate plate; 3, supporting plate; 4, upper frame body; 5, lower frame body; 6, supporting spring; 7, limiting block; 8, limiting groove; 9, accommodating groove; 10, baffle; 11, cylinder body; 12, guide post; 13, contact head; 14, return spring; 15, contact groove; 16, contact point; 17, threaded rod; 18, driving sleeve; 19, worm gear; 20, motor; 21, worm; 22, housing; 23, inclined plane. Specific embodiments
[0026] Please refer to Figures 1-10 , and the present utility model will be described in detail below in conjunction with the drawings and embodiments:
[0027] The automatic flue gate plate of the present utility model includes a roasting furnace body 1 with a furnace chamber opened on its front side. A gate plate 2 is slidably arranged along the up - down direction on the front side of the roasting furnace body 1. A driving device is arranged above the roasting furnace body 1, and the output end of the driving device is connected to the gate plate 2 to drive the gate plate 2 to move up and down to open or close the furnace chamber of the roasting furnace. A supporting plate 3 is arranged on the front side of the roasting furnace body 1 below the furnace chamber. When the gate plate 2 moves upward to open the furnace chamber, the supporting plate 3 rises to be flush with the inner bottom wall of the furnace chamber. When the gate plate 2 moves downward to close the furnace chamber, the supporting plate 3 is pushed by the gate plate 2 to move downward. The supporting plate 3 moves downward a set distance to open the normally - closed contact assembly arranged below, and the driving device stops running, and the gate plate 2 seals the furnace chamber to achieve closing.
[0028] During use, start the driving device to drive the gate plate 2 to move upward, and the supporting plate 3 rises to be flush with the inner bottom wall of the furnace chamber. At this time, when taking out the fired product from the furnace chamber, foreign particles such as furnace slag will fall on the supporting plate 3. Currently, foreign objects on the upper end surface of the supporting plate 3 need to be cleaned in time, otherwise it will affect the proper seating of the gate plate 2. Moreover, since the roasting furnace has just been used, the supporting plate 3 has a very high temperature, and it is easy to get scalded during cleaning, resulting in safety accidents. In the present application, when the gate plate 2 moves downward, the supporting plate 3 will be pushed downward by the gate plate 2. Therefore, the presence of foreign objects on the upper end surface of the supporting plate 3 will not affect the proper seating of the gate plate 2, and the supporting plate 3 can be cleaned after the roasting furnace has completely cooled down.
[0029] In this embodiment, an upper frame body 4 and a lower frame body 5 are fixedly arranged on the front side of the roasting furnace body 1. The upper frame body 4 and the lower frame body 5 are fixedly arranged. The gate plate 2 is slidably arranged in the upper frame body 4 and the lower frame body 5 in the vertical direction. A supporting spring 6 is fixedly arranged between the lower end surface of the supporting plate 3 and the inner bottom wall of the lower frame body 5. A limiting block 7 is fixedly arranged on the rear side surface of the supporting plate 3, and a limiting groove 8 is opened in the front side surface of the roasting furnace body 1 corresponding to the limiting block 7 in the vertical direction; start the driving device to drive the gate plate 2 to move upward. When the supporting plate 3 moves upward under the thrust of the supporting spring 6, the limiting block 7 is driven to slide upward in the limiting groove 8. When the limiting block 7 moves to the inner top wall of the limiting groove 8, it is limited, and the supporting plate 3 stops moving upward. At this time, the upper end surface of the supporting plate 3 is exactly flush with the inner bottom wall of the furnace chamber; when the driving device drives the gate plate 2 to move downward, the gate plate 2 moves downward to close the furnace chamber. When the gate plate 2 moves downward to a set position, it pushes the supporting plate 3 downward. When the supporting plate 3 moves downward a set distance, a normally closed contact assembly arranged below is opened, and the driving device stops running. The gate plate 2 seals the furnace chamber to achieve closing.
[0030] In this embodiment, a receiving groove 9 is opened on the inner bottom wall of the lower frame body 5, and the supporting spring 6 is located in the receiving groove 9 and is fixedly arranged with the inner bottom wall of the receiving groove 9.
[0031] In order to seal the supporting spring 6 exposed to the outside when the supporting plate 3 moves upward to be flush with the inner bottom wall of the furnace chamber and achieve the purpose of protecting the supporting spring 6, in this embodiment, a baffle 10 with its rear side surface fitting the front side surface of the lower frame body 5 is fixedly arranged on the lower end surface of the supporting plate 3. Whether the supporting plate 3 is at the upper limit position or the lower position, the baffle 10 seals the space formed between the lower frame body 5 and the baffle 10, realizing the sealing protection of the supporting spring 6 located in the space formed between the lower frame body 5 and the baffle 10.
[0032] In this embodiment, the normally-closed contact assembly includes a cylinder body 11 fixedly arranged on the front side of the lower frame body 5, and a guide post 12 fixedly arranged on the right side of the supporting plate 3. A contact 13 is slidably arranged in the cylinder body 11 in the vertical direction. A return spring 14 is fixedly arranged between the contact 13 and the inner bottom wall of the cylinder body 11. A contact groove 15 is formed on the upper end surface of the contact 13. A contact point 16 is fixedly arranged at a position on the inner side wall of the cylinder body 11 corresponding to the contact groove 15. In the normal state, the return spring 14 drives the contact 13 to move upward, so that the contact point 16 enters the contact groove 15, realizing the closing of the contact point 16 and the contact 13. When the supporting plate 3 moves downward, it drives the guide post 12 to move downward. When the guide post 12 moves downward to a set distance, it pushes the contact 13 to move downward against the return spring 14, so that the contact point 16 disengages from the contact groove 15 of the contact 13, realizing the disconnection of the normally-closed contact point 16, and the driving device stops running. At this time, the shutter 2 closes the furnace chamber.
[0033] In this embodiment, the driving device includes a threaded rod 17 whose bottom end is fixedly arranged on the upper end surface of the shutter 2. A driving sleeve 18 is threadedly connected to the outer surface of the threaded rod 17. The driving sleeve 18 is rotatably connected to the ejector rod of the upper frame body 4. A worm gear 19 is coaxially and fixedly arranged on the outer surface of the driving sleeve 18. A motor 20 is fixedly arranged on the ejector rod of the upper frame body 4. A worm 21 is fixedly arranged on the output shaft of the motor 20. The worm 21 meshes with the worm gear 19. When the motor 20 is started, it drives the worm 21 to rotate. The worm 21 drives the driving sleeve 18 to rotate through the worm gear 19. The driving sleeve 18 is threadedly connected to the threaded rod 17. The rotation of the driving sleeve 18 drives the threaded rod 17 to move up and down, realizing the purpose of driving the shutter 2 to move up and down, and realizing the purpose of opening or closing the furnace chamber by the shutter 2.
[0034] The control circuit of the motor 20 in the above solution can be controlled by a dual-circuit. The first circuit is the circuit for controlling the forward rotation of the motor 20, driving the shutter 2 to move downward, and stopping the operation of the motor 20 through the normally-closed contact assembly. The second circuit is the circuit for controlling the reverse rotation of the motor 20, driving the shutter 2 to move upward.
[0035] An upper end surface of the ejector rod of the upper frame body 4 is fixedly provided with a housing 22. Both the worm 21 and the worm gear 19 are located inside the housing 22, and the worm 21 is rotatably connected to the housing 22. The top end of the threaded rod 17 penetrates through the upper end surface of the housing 22. The housing 22 plays a role in protecting the worm 21 and the worm gear 19.
[0036] In this embodiment, an inclined surface 23 is formed on the upper end surface of the supporting plate 3. During use, when taking out the fired products from the furnace chamber, foreign matters such as furnace slag fall on the supporting plate 3, which is convenient for the foreign matters to slide off from the inclined surface 23 of the supporting plate 3.
[0037] Working principle of the utility model: Start the motor 20. The motor 20 drives the gate plate 2 to move upward in sequence through the worm 21, the worm wheel 19, the drive sleeve 18 and the threaded rod 17. When the supporting plate 3 moves upward under the thrust of the supporting spring 6, it drives the limiting block 7 to slide upward in the limiting groove 8. When the limiting block 7 moves to the inner top wall of the limiting groove 8 and is limited, the supporting plate 3 stops moving upward. At this time, the upper end surface of the supporting plate 3 is exactly flush with the inner bottom wall of the furnace chamber; then take out the fired products in the furnace chamber, and then start the motor 20 to reverse to drive the gate plate 2 to move downward. The gate plate 2 moves downward to close the furnace chamber. When the gate plate 2 moves downward to a set position, it pushes the supporting plate 3 to move downward. When the supporting plate 3 moves downward a set distance, the normally closed contact assembly arranged below is opened, and the motor 20 stops running. The gate plate 2 seals the furnace chamber to achieve closing.
Claims
1. An automatic flue damper, comprising a roasting furnace body (1) with a furnace chamber opened on the front side, characterized in that: A damper plate (2) is slidably arranged in the vertical direction on the front side of the roasting furnace body (1). A driving device is arranged above the roasting furnace body (1), and the output end of the driving device is connected to the damper plate (2) to drive the damper plate (2) to move up and down to open or close the furnace chamber of the roasting furnace. A supporting plate (3) is arranged on the front side of the roasting furnace body (1) below the furnace chamber. When the damper plate (2) moves upward to open the furnace chamber, the supporting plate (3) rises to be flush with the inner bottom wall of the furnace chamber. When the damper plate (2) moves downward to close the furnace chamber, the supporting plate (3) is pushed downward by the damper plate (2). A normally closed contact assembly for controlling the driving device to stop is arranged on the front side of the roasting furnace body (1) below the supporting plate (3).
2. The automatic flue damper according to claim 1, characterized in that: An upper frame body (4) and a lower frame body (5) are fixedly arranged on the front side of the roasting furnace body (1). The upper frame body (4) and the lower frame body (5) are fixedly arranged. The damper plate (2) is slidably arranged in the upper frame body (4) and the lower frame body (5) in the vertical direction. A supporting spring (6) is fixedly arranged between the lower end surface of the supporting plate (3) and the inner bottom wall of the lower frame body (5). A limiting block (7) is fixedly arranged on the rear side surface of the supporting plate (3), and a limiting groove (8) is arranged in the vertical direction on the front side of the roasting furnace body (1) corresponding to the limiting block (7).
3. The automatic flue damper according to claim 2, wherein: The normally closed contact assembly includes a cylinder body (11) fixedly arranged on the front side surface of the lower frame body (5), and a guide post (12) fixedly arranged on the right side surface of the supporting plate (3) corresponding to the cylinder body (11). A contact head (13) is slidably arranged in the vertical direction inside the cylinder body (11). A return spring (14) is fixedly arranged between the contact head (13) and the inner bottom wall of the cylinder body (11). A contact groove (15) is arranged on the upper end surface of the contact head (13), and a contact point (16) is fixedly arranged on the inner side wall of the cylinder body (11) at a position corresponding to the contact groove (15).
4. The automatic flue damper according to claim 2, wherein: The driving device includes a threaded rod (17) whose bottom end is fixedly arranged on the upper end surface of the damper plate (2). A driving sleeve (18) is threadedly connected to the outer surface of the threaded rod (17). The driving sleeve (18) is rotatably connected to the ejector rod of the upper frame body (4). A worm gear (19) is coaxially fixedly arranged on the outer surface of the driving sleeve (18).
5. The automatic flue damper according to claim 4, characterized in that: A motor (20) is fixedly arranged on the ejector rod of the upper frame body (4). A worm (21) is fixedly arranged on the output shaft of the motor (20). The worm (21) meshes with the worm gear (19).
6. The automatic flue damper according to claim 5, characterized in that: The upper end surface of the ejector rod of the upper frame body (4) is fixedly arranged with a housing (22). The worm (21) and the worm gear (19) are both located inside the housing (22), and the worm (21) is rotatably connected to the housing (22). The top end of the threaded rod (17) penetrates through the upper end surface of the housing (22).
7. The automatic flue damper according to claim 2, characterized in that: A receiving groove (9) is arranged on the inner bottom wall of the lower frame body (5). The supporting spring (6) is located inside the receiving groove (9) and is fixedly arranged with the inner bottom wall of the receiving groove (9).
8. The automatic flue damper according to claim 2, wherein: A baffle plate (10) whose rear side surface is attached to the front side surface of the lower frame body (5) is fixedly arranged on the lower end surface of the supporting plate (3).
9. The automatic flue damper according to claim 1, wherein: An inclined surface (23) is arranged on the upper end surface of the supporting plate (3).