A denitration catalyst tunnel furnace drying device

Abstract

The application relates to the technical field of tunnel type drying devices, and discloses a denitration catalyst tunnel furnace drying device to solve the technical problem of heat waste in the tunnel furnace drying device, which comprises a base and a furnace body fixed on the base, a conveying channel is arranged in the furnace body along the length direction of the furnace body, a turnover mechanism is arranged outside the discharging end of the conveying channel, a supporting plate matched with the geometric shape of the conveying channel is arranged on the surface of the turnover mechanism, a plurality of infrared heating mechanisms are sequentially arranged outside the furnace body along the conveying channel direction, each infrared heating mechanism comprises an infrared panel connected with the outer wall of the furnace body through a hinge, a heat recovery mechanism is arranged outside the furnace body and connected with the air outlet flange of the furnace body through a flange pipeline, the bottom of the heat recovery mechanism is fixed on an independent support through bolts, and the heat recovery mechanism is connected with a drying module arranged on the top of the furnace body and in fluid connection with the furnace body through the flange pipeline.

Description

Technical Field

[0001] This application belongs to the technical field of tunnel drying equipment, specifically relating to a tunnel furnace drying device for denitrification catalyst. Background Technology

[0002] Industrial tunnel ovens are continuous heating and drying devices widely used in the drying, heating and curing, heating and shrinking of products, and the manufacturing of aerospace electronic components. Some products on the market produce fumes after heating. In order to prevent environmental pollution from the emission of fumes, denitrification is performed on them. Therefore, tunnel oven drying devices that can be used for heating and denitrification of fumes have emerged on the market.

[0003] Traditional tunnel oven drying equipment has certain problems in use. For example, the heating device of a traditional tunnel oven drying equipment is generally installed inside the cover plate of the tunnel oven drying equipment. This means that when heating the product, the heat moves from top to bottom. This results in the heat contacting the product on the conveyor belt. The side facing the heat is heated well, while the side facing away, although also enveloped in heat, is heated less effectively than the side facing the heat, resulting in poor heating effect. At the same time, traditional tunnel oven drying equipment cannot recover heat. The heat inside the tunnel oven drying equipment will be discharged to the outside through the openings at both ends, resulting in heat energy waste and failing to achieve the goal of energy saving. Utility Model Content

[0004] This application provides a tunnel furnace drying device for denitrification catalyst to solve the technical problem of heat waste inside the aforementioned tunnel furnace drying device.

[0005] The technical solution adopted in this application is as follows:

[0006] A denitrification catalyst tunnel furnace drying device includes a base and a furnace body fixed on the base. A conveying channel is provided in the furnace body along the length direction of the furnace body. A turning mechanism is provided on the outside of the material outlet end of the conveying channel. The surface of the turning mechanism is provided with a support plate that matches the geometry of the conveying channel. Several infrared heating mechanisms are arranged sequentially on the outside of the furnace body along the conveying channel. Each infrared heating mechanism includes an infrared panel connected to the outer wall of the furnace body by a hinge. A heat recovery mechanism is provided on the outside of the furnace body and connected to the furnace body air outlet flange through a flange pipe. The bottom of the heat recovery mechanism is fixed to an independent bracket by bolts. The heat recovery mechanism is connected to a drying module located on the top of the furnace body and fluidly connected to it through a flange pipe.

[0007] By adopting the above technical solutions, before the equipment is in place, the factory foundation, floor and foundation anchor points should be inspected according to the engineering installation specifications. During installation, priority should be given to ensuring the flatness and coaxiality of the base surface and the reference datum surface to avoid large deformation or twisting during the installation process.

[0008] The installation of the furnace body, heat recovery unit and each support frame should follow the principle of segmented alignment and step-by-step tightening. The connection between the air duct and the flange should be kept coaxial and leave an appropriate thermal expansion gap. The flange face should be equipped with a high-temperature resistant gasket and tightened in a diagonal sequence to ensure sealing and flatness.

[0009] Optionally, one end of the infrared panel is hinged to the outer wall of the furnace body, and the other end of the infrared panel is fixedly connected to the adjustment component.

[0010] Optionally, the heat recovery mechanism includes an inlet duct, an outlet duct, a pre-filtration module, and a blower, with the inlet duct connected to the outlet flange of the furnace body via a flange pipe.

[0011] Optionally, the top of the furnace body is provided with several drying modules. The drying modules are connected to the outlet air duct of the heat recovery mechanism through flange pipes, and the drying modules are fixed to the inside of the furnace body top plate by bolts through brackets.

[0012] Optionally, the conveying channels include a lower conveying channel located on one side of the infrared heating mechanism and an upper conveying channel located at the lower end of the drying module.

[0013] Optionally, the flipping mechanism includes a mounting frame and a bevel gear set disposed inside the mounting frame. The bevel gear set is fixedly connected to the support plate, and the upper end of the support plate is provided with a clamping arm.

[0014] Optionally, a lifting assembly is provided on one side of the flipping mechanism. The lifting assembly includes a servo screw and a screw nut, and the screw nut is fixedly connected to the mounting bracket.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0016] 1. By arranging the infrared heating mechanism along the conveying direction and using an adjustable hinged panel, the surface heating intensity and uniformity can be adjusted.

[0017] 2. By connecting the heat recovery mechanism to the top drying module via flanges, waste heat can be recovered and utilized, and heat can be supplied to the top drying module, thereby improving energy efficiency and reducing operating energy consumption.

[0018] 3. The combination of the flipping mechanism and the lifting component can achieve reliable flipping action on the conveyor line, thereby improving drying uniformity and adapting to different process requirements;

[0019] 4. Modular flange connection and detachable hinge design improve the maintainability of the equipment and the convenience of on-site maintenance. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a three-dimensional schematic diagram of a tunnel furnace drying device for a denitrification catalyst according to this application;

[0022] Figure 2 This is a three-dimensional schematic diagram of the drying module in this application;

[0023] Figure 3 This is a three-dimensional schematic diagram of the conveying channel in this application;

[0024] Figure 4 This is a three-dimensional schematic diagram of the flipping mechanism in this application;

[0025] Figure 5 This is a cross-sectional view of the flipping mechanism in this application;

[0026] Figure 6 This is a diagram showing the combination of the infrared panel and the adjustment component in this application.

[0027] 1. Base; 2. Furnace body; 3. Conveying channel; 31. Upper conveying channel; 32. Lower conveying channel; 4. Tilting mechanism; 41. Mounting bracket; 42. Bevel gear set; 5. Support plate; 6. Infrared heating mechanism; 7. Heat recovery mechanism; 8. Drying module; 9. Lifting assembly; 91. Servo screw; 92. Screw nut; 10. Clamping arm; 11. Adjustment assembly. Detailed Implementation

[0028] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0030] A denitrification catalyst tunnel furnace drying device includes a base 1 and a furnace body 2 fixed on the base 1. A conveying channel 3 is provided inside the furnace body 2 along the length of the furnace body 2. A flipping mechanism 4 is provided on the outside of the discharge end of the conveying channel 3. A support plate 5 that matches the geometry of the conveying channel 3 is provided on the surface of the flipping mechanism 4. Several infrared heating mechanisms 6 are arranged sequentially on the outside of the furnace body 2 along the direction of the conveying channel 3. Each infrared heating mechanism 6 includes an infrared panel connected to the outer wall of the furnace body 2 by a hinge. A heat recovery mechanism 7 is provided on the outside of the furnace body 2 and connected to the air outlet flange of the furnace body 2 through a flange pipe. The bottom of the heat recovery mechanism 7 is fixed to an independent bracket by bolts. The heat recovery mechanism 7 is connected to a drying module 8 located on the top of the furnace body 2 and fluidly connected to it through a flange pipe.

[0031] Furthermore, one end of the infrared panel is hinged to the outer wall of the furnace body 2, and the other end of the infrared panel is fixedly connected to the adjustment component 11.

[0032] Furthermore, the heat recovery mechanism 7 includes an inlet air duct, an outlet air duct, a pre-filter module, and a blower, and the inlet air duct is connected to the outlet flange of the furnace body 2 through a flange pipe.

[0033] Furthermore, the top of the furnace body 2 is provided with several drying modules 8. The drying modules 8 are connected to the outlet air duct of the heat recovery mechanism 7 through flange pipes, and the drying modules 8 are fixed to the inner side of the top plate of the furnace body 2 by bolts through brackets.

[0034] Furthermore, the conveying channel 3 includes a lower conveying channel 32 located on one side of the infrared heating mechanism 6 and an upper conveying channel 31 located at the lower end of the drying module 8.

[0035] Furthermore, the flipping mechanism 4 includes a mounting frame 41 and a bevel gear set 42 disposed inside the mounting frame 41. The bevel gear set 42 is fixedly connected to the support plate 5, and the upper end of the support plate 5 is provided with a clamping arm 10.

[0036] Furthermore, a lifting assembly 9 is provided on one side of the flipping mechanism 4. The lifting assembly 9 includes a servo screw 91 and a screw nut 92, and the screw nut 92 is fixedly connected to the mounting bracket 41.

[0037] like Figures 1 to 6 As shown, when this device is working, the control system first performs a self-check to confirm that the temperature, humidity, and position sensors are all in normal condition. Then, the blower starts, and the connection status of the inlet and outlet air ducts is confirmed to ensure a stable circulating airflow path when the subsequent drying module 8 is turned on. At this time, the infrared heating mechanism 6 is in standby or low-power state, the flipping mechanism 4 and the lifting assembly 9 are reset and the limit signals are confirmed, and the conveying system is circulated under no-load to test the stability of operation.

[0038] like Figure 2 , Figure 3as well as Figure 6 As shown, the material is then fed into the lower conveyor channel 32 according to the feeding rhythm, and the conveying position is continuously monitored by a position sensor. During conveying, the position sensor adjusts the angle of the infrared panel according to the material position and the preset process via the adjustment component 11, and controls the opening state of the infrared panel in sections according to the area to form a predetermined surface heating distribution. The infrared panel uses radiation as the main heat input method and convection as a supplement to quickly form dehydration channels on the surface of the material, creating conditions for subsequent deep drying.

[0039] like Figure 4 as well as Figure 5 As shown, when the material reaches the trigger point of the tilting mechanism 4, the control system confirms the position and sends an action command. First, the lifting component 9 drives the support plate 5 to rise to the specified height, and the lifting action is ensured by position closed-loop feedback to ensure positioning accuracy.

[0040] After being lifted into position, the clamping arm 10 clamps the material. Once the clamping confirmation signal is received, the material is allowed to be flipped, and then the lifting continues.

[0041] Subsequently, the motor starts the bevel gear set 42 transmission, causing the support plate 5 to rotate in an orderly manner along the designed flip angle. The rigid meshing and smooth transmission of the bevel gear set 42 ensure the repeatability of the flip angle and the transmission of torque.

[0042] After the flipping is complete and confirmed by position feedback, the lifting component 9 descends to its reset position, the clamping arm 10 releases, and the material enters the upper conveying channel 31. Throughout the flipping sequence, the safety interlock is used as a parallel condition; any critical feedback anomaly will cause the operation to stop and trigger an alarm.

[0043] In this embodiment, preferably, a bevel gear set 42 is used for flipping. In other embodiments, a sprocket set can also be used. The sprocket set includes a large sprocket disposed inside the mounting frame 41 and a small sprocket meshing with the large sprocket through a chain. The large sprocket is fixedly connected to the support plate 5, and the small sprocket is connected to the motor drive shaft.

[0044] Finally, as Figure 1 as well as Figure 2 As shown, the high-temperature exhaust gas generated inside the furnace body 2 is extracted by the heat recovery mechanism 7 through the outlet flange. It first passes through the pre-filtration module to remove dust and particulate matter, and then is pressurized and transported to the outlet air duct by the blower. The outlet air duct is connected by flanges to transport the treated hot gas to the drying module 8 at the top of the furnace body 2 in sections. The drying module 8 transfers heat to the surface and pores of the material through convection to achieve deep drying.

[0045] When the pre-filtration pressure difference or temperature is abnormal, the control system activates bypass or zone bypass according to the set logic to realize the dynamic allocation of heat recovery flow and trigger maintenance reminders.

[0046] If required by the operating conditions, the heat recovery mechanism 7 can be used in parallel with auxiliary heating (electric heating, steam, etc.). The control system automatically compensates for the opening and closing of the auxiliary heat source according to the outlet temperature deviation to maintain the stable operating conditions of the drying module 8.

[0047] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0048] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A tunnel furnace drying device for denitrification catalyst, comprising a base (1) and a furnace body (2) fixed on the base (1), characterized in that: The furnace body (2) is provided with a conveying channel (3) along the length of the furnace body (2). A flipping mechanism (4) is provided on the outside of the discharge end of the conveying channel (3). A support plate (5) that matches the geometry of the conveying channel (3) is provided on the surface of the flipping mechanism (4). Several infrared heating mechanisms (6) are arranged sequentially on the outside of the furnace body (2) along the direction of the conveying channel (3). Each infrared heating mechanism (6) includes an infrared panel connected to the outer wall of the furnace body (2) by a hinge. A heat recovery mechanism (7) is provided on the outside of the furnace body (2) and connected to the air outlet flange of the furnace body (2) through a flange pipe. The bottom of the heat recovery mechanism (7) is fixed to an independent bracket by bolts. The heat recovery mechanism (7) is connected to the drying module (8) located on the top of the furnace body (2) and fluidly connected to it through a flange pipe.

2. The apparatus according to claim 1, characterized in that: One end of the infrared panel is hinged to the outer wall of the furnace body (2) via a hinge, and the other end of the infrared panel is fixedly connected to the adjustment component (11).

3. The apparatus according to claim 1, characterized in that: The heat recovery mechanism (7) includes an inlet air duct, an outlet air duct, a pre-filter module and a blower, and the inlet air duct is connected to the outlet flange of the furnace body (2) through a flange pipe.

4. The apparatus according to claim 3, characterized in that: The top of the furnace body (2) is provided with several drying modules (8). The drying modules (8) are connected to the outlet air duct of the heat recovery mechanism (7) through flange pipes, and the drying modules (8) are fixed to the inner side of the top plate of the furnace body (2) by bolts through brackets.

5. The apparatus according to claim 1, characterized in that: The conveying channel (3) includes a lower conveying channel (32) located on one side of the infrared heating mechanism (6) and an upper conveying channel (31) located at the lower end of the drying module (8).

6. The apparatus according to claim 1, characterized in that: The flipping mechanism (4) includes a mounting frame (41) and a bevel gear set (42) disposed inside the mounting frame (41). The bevel gear set (42) is fixedly connected to the support plate (5), and the upper end of the support plate (5) is provided with a clamping arm (10).

7. The apparatus according to claim 6, characterized in that: The flipping mechanism (4) is provided with a lifting component (9) on one side. The lifting component (9) includes a servo screw (91) and a screw nut (92), and the screw nut (92) is fixedly connected to the mounting bracket (41).

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