Automatic high-efficiency pressure regulating shuttle kiln

Abstract

The utility model relates to a shuttle kiln of automatic high -efficient regulation kiln pressure relates to the field of kiln stove, and kiln stove main part has the kiln cavity along the first direction extension, and kiln stove main part is equipped with the flue pipe body of multiple interval arrangement along the first direction of exhaust pipe, and the both ends of flue pipe body are communicated kiln cavity and exhaust pipe respectively, in exhaust mechanism, multiple connecting rod assemblies, multiple valve plate assemblies and multiple flue pipe bodies are one -to -one corresponding, and valve plate assembly is lifted and is established in the flue pipe body to control the on -off of flue pipe body and exhaust pipe, and one end of connecting rod assembly is fixedly connected with the transmission shaft along the first direction extension, and the other end is connected with corresponding valve plate assembly, and drive assembly can drive transmission shaft rotation, and passes through connecting rod assembly and drives valve plate assembly to lift, detection mechanism can gather kiln pressure data and kiln temperature data of kiln stove main part, control mechanism is electrically connected in detection mechanism and drive assembly. The utility model can automatically and efficiently adjust exhaust condition, improve kiln pressure control precision, stabilize product quality, and reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of kiln technology, and in particular to a shuttle kiln with automatic and efficient kiln pressure adjustment. Background Technology

[0002] A shuttle kiln is an intermittent production kiln widely used for firing products such as daily-use ceramics, sanitary ceramics, refractory materials, and special ceramics. After entering the kiln, the blanks undergo multiple processes such as heating and drying, preheating, firing, and cooling to form products with different functions. After exiting the kiln, they proceed to the next process (such as baking decoration, grinding the bottom, etc.).

[0003] Each time the kiln pressure rises from ambient temperature to the maximum temperature and then drops to the outlet temperature, it is necessary to control the kiln pressure to achieve a balanced state at each temperature stage, aiming to maintain the atmosphere, temperature difference, and other parameters required by the firing process. At low temperatures, the amount of flue gas in the kiln (i.e., the amount of combustion exhaust gas) is small, and the amount of flue gas increases as the temperature rises. During cooling, the supply of cold air is also changing, and the exhaust volume must be adjusted in order to maintain the kiln pressure at different stages.

[0004] Currently, most shuttle kilns are equipped with multiple branch flues (which are then exhausted outside the kiln by an exhaust fan) to control kiln pressure, atmosphere, and temperature differences at multiple points. The opening of the damper in each branch flue (or flue pipe) is mainly adjusted manually. Specifically, the operator, based on experience, observes the flame conditions inside the kiln, pressure gauge readings, or thermocouple temperatures, and manually adjusts the opening and closing of the damper in the branch flue to control the draft inside the kiln, ultimately achieving the desired atmosphere and temperature profile by controlling the kiln pressure. However, this method is not only labor-intensive, but also makes it difficult to maintain consistent quality based on experience. Therefore, there is a need for an automatic and precise exhaust structure that adjusts the opening of all flue pipes to solve the existing technical problems. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a shuttle kiln with automatic and efficient pressure regulation, which can automatically and efficiently regulate the exhaust of the shuttle kiln, improve the kiln pressure control accuracy, stabilize product quality, and reduce energy consumption.

[0006] This utility model embodiment provides a shuttle kiln with automatic and efficient kiln pressure regulation, comprising: The kiln body has a kiln cavity extending along a first direction. The kiln body is provided with a flue pipe and a plurality of flue pipes arranged at intervals along the first direction. One end of each flue pipe is connected to the kiln cavity and the other end is connected to the flue pipe. An exhaust mechanism includes a drive assembly, a transmission shaft, multiple linkage assemblies, and multiple valve plate assemblies. The multiple linkage assemblies and multiple valve plate assemblies are arranged in a one-to-one correspondence with multiple flue pipes. Each valve plate assembly is raised and lowered within a corresponding flue pipe to control the connection and disconnection between the flue pipe and the exhaust pipe. The transmission shaft extends along a first direction. One end of each linkage assembly is fixedly connected to the transmission shaft, and the other end is connected to the corresponding valve plate assembly. The output end of the drive assembly is connected to the transmission shaft to drive the transmission shaft to rotate and, through the linkage assemblies, drive the valve plate assemblies to rise and fall. The testing agency is configured to collect kiln pressure and kiln temperature data of the kiln body; A control mechanism is electrically connected to both the detection mechanism and the drive assembly, with its first direction perpendicular to the vertical direction.

[0007] The shuttle kiln with automatic and efficient kiln pressure adjustment according to the embodiments of this utility model has at least the following beneficial effects: During the operation of the kiln body, the kiln pressure data and kiln temperature data of the kiln body are collected by the detection mechanism to monitor the working status of the kiln body in real time; based on the kiln pressure data and kiln temperature data, it is determined whether kiln pressure control is required; and when kiln pressure control is performed, the drive component is driven to rotate a certain angle, causing all the connecting rod components to swing simultaneously under the drive of the drive shaft, and driving all the valve plate components to rise or fall synchronously to a certain height, thereby enabling automatic and efficient exhaust of all flue pipes on the kiln body, and improving the kiln pressure control accuracy of the kiln body. This effectively overcomes the problems of high labor intensity and difficulty in ensuring stable product firing quality due to experience-based operation in existing kiln pressure adjustment methods, thus helping to stabilize the firing quality of products and reduce energy consumption.

[0008] In some embodiments of this utility model, the flue pipe is L-shaped when viewed along the first direction, the valve plate assembly includes a lifting valve plate and a connecting rod, the lifting valve plate is disposed in the flue pipe, the connecting rod extends in the vertical direction, the lower end of the connecting rod is fixedly connected to the lifting valve plate, and the upper end of the connecting rod passes through the flue pipe upward and is connected to the connecting rod assembly.

[0009] In some embodiments of this utility model, the connecting rod assembly includes a connecting rod arm, one end of which is fixedly connected to the transmission shaft, and the other end is provided with an elongated through hole extending along a first direction. The elongated through hole extends along the length direction of the connecting rod arm, and the upper end of the connecting rod is provided with a connecting shaft extending along the first direction. The connecting shaft passes through the elongated through hole.

[0010] In some embodiments of this utility model, the upper end of the connecting rod is also provided with a clearance opening, one end of the connecting rod swing arm away from the transmission shaft is located in the clearance opening, and the two opposite inner walls of the elongated through hole are in contact with the part of the connecting shaft located in the clearance opening.

[0011] In some embodiments of this utility model, the driving assembly includes a drive motor, an eccentric wheel, and a transmission swing arm. The output shaft of the drive motor is fixedly connected to the eccentric wheel, one end of the transmission swing arm is fixedly connected to the transmission shaft, and the other end abuts against the outer circumferential surface of the eccentric wheel.

[0012] In some embodiments of this utility model, the shuttle kiln for automatically and efficiently adjusting kiln pressure further includes a limiting swing rod, a first position detector, and a second position detector. One end of the limiting swing rod is fixedly connected to the drive shaft, and the other end is located between the first position detector and the second position detector. The first position detector and the second position detector are arranged at intervals in the vertical direction and are electrically connected to the control mechanism. The control mechanism is configured to control the drive assembly to stop operating when the limiting swing rod triggers the first position detector or the second position detector.

[0013] In some embodiments of this utility model, the detection mechanism includes a pressure sensor and a temperature sensor. The pressure sensor is configured to collect kiln pressure data of the kiln body, and the temperature sensor is configured to collect kiln temperature data of the kiln body.

[0014] In some embodiments of this invention, the control mechanism is configured to control the operation of the drive assembly based on the kiln pressure data and the kiln temperature data.

[0015] In some embodiments of this utility model, the inner wall surface of the flue pipe is provided with a heat insulation layer.

[0016] In some embodiments of this utility model, multiple flue pipes jointly define a flue assembly. The kiln body is provided with two flue assemblies arranged at intervals along a second direction. The exhaust pipe is located between the two flue assemblies and communicates with the two flue assemblies. Two exhaust mechanisms are provided and are respectively arranged corresponding to the two flue assemblies. The first direction, the second direction, and the up and down direction are perpendicular to each other.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the shuttle kiln with automatic and efficient kiln pressure adjustment provided in the embodiments of this utility model from the main viewing angle. Figure 2 This is a side view schematic diagram of the shuttle kiln with automatic and efficient kiln pressure adjustment according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the drive assembly in a shuttle kiln that automatically and efficiently adjusts kiln pressure according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the installation layout of the limiting swing rod, the first position detector, and the second position detector in a shuttle kiln that automatically and efficiently adjusts the kiln pressure according to an embodiment of the present utility model. Figure 5 This is a schematic diagram of the valve plate assembly in a shuttle kiln that automatically and efficiently adjusts kiln pressure according to an embodiment of the present invention.

[0019] Reference numerals: 100, kiln body; 110, flue pipe; 120, exhaust pipe; 210, valve plate assembly; 211, lifting valve plate; 212, connecting rod; 213, connecting shaft; 214, clearance opening; 220, transmission shaft; 230, drive assembly; 231, drive motor; 232, eccentric wheel; 233, transmission swing arm; 240, connecting rod swing arm; 241, elongated through hole; 250, limiting swing rod; 300, insulation layer; 310, first position detector; 320, second position detector. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The following is for reference. Figures 1 to 5 This invention describes a shuttle kiln with automatic and efficient kiln pressure adjustment according to an embodiment of the present invention.

[0024] like Figures 1 to 5 As shown, the shuttle kiln with automatic and efficient kiln pressure regulation according to an embodiment of this utility model can be used in the firing processes of products such as daily-use ceramics, sanitary ceramics, refractory materials, and special ceramics. The shuttle kiln of this embodiment can automatically and efficiently regulate the exhaust of the shuttle kiln, improve the accuracy of kiln pressure control, promote stable product firing quality, and reduce energy consumption during operation.

[0025] The shuttle kiln with automatic and efficient pressure regulation has a first direction, a second direction, and a vertical direction, wherein the first direction, the second direction, and the vertical direction are arranged perpendicularly to each other. In this embodiment, it is assumed that the first direction is the left-right direction and the second direction is the front-back direction.

[0026] like Figures 1 to 5 As shown, the structure of the shuttle kiln with automatic and efficient kiln pressure regulation includes the kiln body 100, an exhaust mechanism, a detection mechanism, and a control mechanism.

[0027] The length of the kiln body 100 extends along a first direction, and the width of the kiln body 100 extends along a second direction. The kiln body 100 is hollow inside, forming a kiln cavity. The length of the kiln cavity extends along the first direction. One end of the kiln cavity along the first direction is the kiln head, and the other end of the kiln cavity along the first direction is the kiln tail, so that the green body can enter the kiln cavity from the kiln head and leave the kiln cavity from the kiln tail. The kiln body 100 is provided with a flue pipe 120 and multiple flue pipes 110. The multiple flue pipes 110 are arranged at certain intervals along the first direction. One end of each flue pipe 110 is connected to the kiln cavity, and the other end of each flue pipe 110 is connected to the flue pipe 120, so that the flue pipe 120 can be connected to the kiln cavity through the flue pipes 110, so that the flue gas in the kiln cavity can be discharged to the outside through the flue pipe 120.

[0028] In this embodiment, the length of the flue pipe 120 extends along a first direction, and the flue pipe body 110 is located on one side of the flue pipe 120 along its length. An exhaust fan is installed inside the flue pipe 120 or at one end of the flue pipe 120. When the exhaust fan is running, all the flue gas in the flue pipe body 110 can be drawn into the flue pipe 120, and then discharged centrally after being collected at the flue pipe 120. The flue pipe body 110 and the flue pipe 120 can be installed on the kiln body 100 by a bracket.

[0029] The exhaust mechanism includes a drive assembly 230, a drive shaft 220, multiple linkage assemblies, and multiple valve plate assemblies 210. The system comprises multiple connecting rod assemblies, multiple valve plate assemblies 210, and multiple flue pipes 110 arranged in a one-to-one correspondence. Each valve plate assembly 210 is vertically mounted within its corresponding flue pipe 110, and its function is to control the connection between the flue pipe 110 and the exhaust pipe 120. The drive shaft 220 extends along a first direction and can be mounted on the kiln body 100 via a bearing seat. Multiple connecting rod assemblies are arranged at intervals along the length of the drive shaft 220. One end of each connecting rod assembly is fixedly connected to the drive shaft 220, allowing the connecting rod assembly to swing around the drive shaft 220 as the drive shaft 220 rotates. The other end of each connecting rod assembly is connected to its corresponding valve plate assembly 210, and the connecting rod assembly can apply a driving force to the valve plate assembly 210, enabling the valve plate assembly 210 to vertically rise and fall relative to the flue pipe 110 in the vertical direction. The connecting rod assemblies, drive shaft 220, and drive assembly 230 are located outside the flue pipe 110.

[0030] The output end of the drive assembly 230 is connected to the transmission shaft 220. The function of the drive assembly 230 is to drive the transmission shaft 220 to rotate in the forward or reverse direction, and drive the valve plate assembly 210 to rise and fall through the connecting rod assembly, thereby adjusting the opening of the valve plate assembly 210 and controlling the amount of flue gas flowing from the kiln cavity through the flue pipe 110 into the exhaust pipe 120.

[0031] The detection mechanism is configured to collect kiln pressure and temperature data of the kiln body 100, thereby enabling real-time monitoring of the kiln body 100's operating status. This provides a data basis for automatically and efficiently adjusting the kiln pressure, helping to improve the accuracy of kiln pressure control and avoiding unstable product firing quality caused by relying on experience for venting. In this embodiment, the detection mechanism includes a pressure sensor and a temperature sensor. The pressure sensor is configured to collect kiln pressure data of the kiln body 100, and the temperature sensor is configured to collect kiln temperature data of the kiln body 100. It is understood that the number of pressure sensors and temperature sensors is not limited to one.

[0032] The control mechanism is electrically connected to both the detection mechanism and the drive assembly 230, enabling it to receive data collected by the detection mechanism and send control commands to the drive assembly 230. It is understood that the control mechanism can be a PLC controller, a 51 microcontroller, or a host computer, capable of receiving data from the detection mechanism and transmitting control commands to the exhaust mechanism.

[0033] The automatic and efficient kiln pressure regulating shuttle kiln provided in this embodiment is used as follows: During the operation of the kiln body 100, the kiln pressure data and kiln temperature data of the kiln body 100 are collected by the detection mechanism to monitor the working status of the kiln body 100 in real time. Based on the kiln pressure data and kiln temperature data, it is determined whether kiln pressure control is required. When kiln pressure control is performed, the drive assembly 230 is driven to rotate the transmission shaft 220 by a certain angle, causing all the connecting rod assemblies to swing simultaneously under the drive of the transmission shaft 220, and driving all the valve plate assemblies 210 to rise or fall synchronously by a certain height. This enables the synchronous adjustment of the opening of the valve plate assemblies 210, automatically and efficiently completing the exhaust of all the flue pipes 110 on the kiln body 100, and improving the control accuracy of the kiln pressure inside the kiln body 100. This effectively overcomes the problems of high labor intensity and reliance on experience in existing kiln pressure regulation methods, which make it difficult to ensure stable product firing quality, thus helping to stabilize the firing quality of the product.

[0034] Furthermore, if the kiln pressure is too high, the hot gas inside the kiln cavity will escape outward, resulting in increased heat loss; if the kiln pressure is too low, cold air will leak in, leading to increased energy consumption. Therefore, by automatically and efficiently adjusting the kiln pressure, the air pressure inside the kiln cavity can be controlled to reduce heat loss and cold air leakage, thereby reducing the energy consumption of the shuttle kiln.

[0035] In some embodiments, such as Figures 2 to 4As shown, the flue pipe 110 is L-shaped when viewed along the first direction. Specifically, the flue pipe 110 includes a vertical section and a horizontal section extending along the second direction. The lower end of the vertical section is connected to the kiln cavity, the upper end of the vertical section is connected to one end of the horizontal section, and the other end of the horizontal section is connected to the exhaust pipe 120. The valve plate assembly 210 includes a lifting valve plate 211 and a connecting rod 212. The lifting valve plate 211 is disposed inside the flue pipe 110 and can move vertically within the flue pipe 110. The connecting rod 212 extends vertically, with its lower end fixedly connected to the lifting valve plate 211 and its upper end penetrating upward through the flue pipe 110. The connecting rod 212 is slidably connected to the flue pipe 110 vertically. Furthermore, the upper end of the connecting rod 212 is connected to a connecting rod assembly, allowing the connecting rod 212 to drive the lifting valve plate 211 to rise or fall vertically under the action of the connecting rod assembly. In this embodiment, the connecting rod 212 and the lifting valve plate 211 are coaxially arranged.

[0036] It is understandable that the gap between the upper end of the connecting rod 212 and the flue pipe body 110 can be sealed with a sealing ring or similar material. The lifting valve plate 211 is located at the upper end of the vertical section of the flue pipe body 110. When the lifting valve plate 211 moves downward into position, it can block and obstruct the vertical section, preventing the flue gas in the kiln cavity from flowing through the flue pipe body 110 to the exhaust pipe 120. As the lifting valve plate 211 moves upward, it releases its blocking and obstructing effect on the vertical section of the flue pipe body 110, allowing the flue gas in the kiln cavity to flow into the exhaust pipe 120 through the flue pipe body 110. As the height of the lifting valve plate 211 increases, the opening of the valve plate assembly 210 increases, causing more flue gas to flow from the kiln cavity to the exhaust pipe 120 per unit time, which is beneficial for accurately controlling the kiln pressure.

[0037] In some embodiments, such as Figure 1 , Figure 2 and Figure 5As shown, the linkage assembly includes a linkage arm 240. One end of the linkage arm 240 is fixedly connected to the drive shaft 220. The length direction of the linkage arm 240 is perpendicular to the length direction of the drive shaft 220. The linkage arm 240 can swing along with the drive shaft 220. The other end of the linkage arm 240 is provided with an elongated through hole 241. The elongated through hole 241 extends along the first direction, that is, it penetrates both surfaces of the linkage arm 240 along the first direction. The elongated through hole 241 extends along the length direction of the linkage arm 240. The upper end of the connecting rod 212 is provided with a connecting shaft 213. The length of the connecting shaft 213 extends along the first direction. The connecting shaft 213 passes through the elongated through hole 241, so that a transmission relationship is established between the connecting rod 212 and the connecting rod swing arm 240. Then, during the forward or reverse swing of the connecting rod swing arm 240, the connecting shaft 213 can slide along the elongated through hole 241, causing the connecting rod 212 to drive the lifting valve plate 211 to move vertically upward or downward, thereby automatically adjusting the height position of the lifting valve plate 211.

[0038] Furthermore, such as Figure 2 and Figure 5 As shown, the upper end of the connecting rod 212 is also provided with a clearance opening 214, which extends upward through the upper surface of the connecting rod 212 and through both surfaces of the connecting rod 212 along the second direction. The end of the connecting rod arm 240 away from the drive shaft 220 is located within the clearance opening 214, and the two opposing inner walls of the elongated through hole 241 contact the portion of the connecting shaft 213 located within the clearance opening 214. In this embodiment, the upper end of the connecting rod 212 is U-shaped when viewed along the second direction. The upper end of the connecting rod 212 is provided with a mounting hole extending along the first direction. The connecting shaft 213 includes a bolt, a nut, and a sleeve. The sleeve passes through the mounting hole and the elongated through hole 241. The bolt passes through the sleeve and is connected to the nut to install the sleeve onto the connecting rod 212.

[0039] Understandably, this design ensures that the connecting shaft 213 and connecting rod 212 are subjected to balanced forces when the connecting rod arm 240 applies force, which helps to ensure that the lifting valve plate 211 rises and falls stably in the vertical direction. The avoidance opening 214 ensures that the connecting shaft 213 slides along the elongated through hole 241 during the vertical rise and fall of the connecting rod 212 and the swing of the connecting rod arm 240.

[0040] Of course, it is not excluded that in other embodiments, a double link is used instead of the link arm 240 and hinged to the connecting rod 212.

[0041] In some embodiments, such as Figure 1 and Figure 3As shown, the drive assembly 230 includes a drive motor 231, an eccentric wheel 232, and a transmission swing arm 233. The drive motor 231 can be mounted on the kiln body 100 via a bracket. The output shaft of the drive motor 231 is fixedly connected to the eccentric wheel 232, and the output shaft of the drive motor 231 and the eccentric wheel 232 are eccentrically arranged. In this embodiment, the drive motor 231 is a geared motor. One end of the transmission swing arm 233 is fixedly connected to the transmission shaft 220, and the other end of the transmission swing arm 233 abuts downward against the outer circumferential surface of the eccentric wheel 232. The eccentric wheel 232 is symmetrically arranged about its own central axis, and the central axis of the eccentric wheel 232 is perpendicular to the first direction.

[0042] It is understandable that the drive motor 231 can be a servo motor. When the drive motor 231 is running, the eccentric wheel 232 can rotate continuously in the same direction, while the transmission swing arm 233 remains pressed against the outer circumference of the eccentric wheel 232 due to its own gravity. Therefore, the transmission swing arm 233 can swing down or up under the driving action of the eccentric wheel 232, thereby driving the transmission shaft 220 to drive all the connecting rod swing arms 240 to swing down or up. Finally, the connecting rod swing arms 240 drive the connecting rod 212 to adjust the up and down position of the lifting valve plate 211, thereby realizing the opening adjustment of the valve plate assembly 210.

[0043] Of course, it is not excluded that in other embodiments, the drive motor 231 drives the transmission shaft 220 to rotate through a synchronous belt transmission structure or a gear transmission structure.

[0044] In some embodiments, such as Figure 4 As shown, the shuttle kiln with automatic and efficient kiln pressure adjustment also includes a limit swing rod 250, a first position detector 310, and a second position detector 320. The length direction of the limit swing rod 250 is perpendicular to the length direction of the drive shaft 220. One end of the limit swing rod 250 is fixedly connected to the drive shaft 220, and the other end is located between the first position detector 310 and the second position detector 320. The first position detector 310 and the second position detector 320 can be mounted on the kiln body 100 via brackets. The first position detector 310 and the second position detector 320 are arranged at certain intervals along the vertical direction, with the first position detector 310 positioned above the second position detector 320. Both the first position detector 310 and the second position detector 320 are electrically connected to the control mechanism, and can transmit electrical signals to the control mechanism. The control mechanism is configured to stop the drive assembly 230 when the limit swing rod 250 triggers either the first position detector 310 or the second position detector 320.

[0045] Understandably, in some examples, the first position detector 310 and the second position detector 320 can be limit switches, and the other end of the limit lever 250 can be triggered by touch. In other examples, the first position detector 310 and the second position detector 320 can be slotted photoelectric switches, and the other end of the limit lever 250 can be triggered directly or through a sensing plate. When the first position detector 310 or the second position detector 320 is triggered and generates a detection signal, it indicates that the lifting valve plate 211 has moved up or down to its designated position. At this time, the detection signal is sent to the control mechanism, which then stops the drive assembly 230 from operating, causing the transmission shaft 220 to stop rotating. When the lifting valve plate 211 moves down to its position, it blocks and shuts off the flue pipe 110, preventing the flue gas in the kiln cavity from being discharged to the exhaust pipe 120. When the lifting valve plate 211 moves up to its position, the opening of the lifting valve plate 211 reaches its maximum value, and the amount of flue gas flowing from the kiln cavity to the exhaust pipe 120 is the largest.

[0046] In some embodiments, the control mechanism is configured to control the operation of the drive assembly 230 based on kiln pressure data and kiln temperature data.

[0047] Understandably, the control mechanism can acquire data from pressure and temperature sensors in real time. Furthermore, the storage unit within the control mechanism contains built-in curve data, such as firing curves (or temperature curves). These firing curves describe the temperature change of the green body over time during kiln firing, typically consisting of three stages: heating, holding, and cooling. Under complex conditions, they can be further subdivided into more than ten temperature control nodes. During the kiln's operation at 100°C, the firing section needs to be maintained at zero or slightly positive pressure to prevent excessive negative pressure from causing cold air infiltration or excessive positive pressure from leading to increased heat loss and energy consumption.

[0048] The control mechanism can compare the collected pressure data with preset data and the collected temperature data with the preset firing curve. Based on the comparison results, it can control the drive assembly 230 to precisely adjust the opening of the valve plate assembly 210. By operating the exhaust mechanism, the exhaust volume is controlled, thereby adjusting the kiln pressure to achieve balance at each temperature stage, maintaining the required atmosphere, temperature difference, and other parameters for the firing process, and meeting the requirements of the atmosphere and temperature curves.

[0049] In some embodiments, such as Figure 2As shown, the inner wall of the flue pipe 110 is provided with an insulation layer 300. The flue pipe 110 adopts a steel structure design, and the inner wall of the flue pipe 110 is covered with the insulation layer 300. The material of the insulation layer 300 is not limited, as long as it can prevent the high temperature heat of the flue gas from escaping outward. The insulation layer 300 is bolted to the flue pipe 110 for easy access and maintenance. In this case, an inspection door is provided on one side of the flue pipe 110.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, multiple flue pipes 110 collectively define a flue assembly. The kiln body 100 has two flue assemblies, which are arranged at intervals along a second direction. An exhaust pipe 120 is located between the two flue assemblies and communicates with both flue assemblies. In this embodiment, both flue assemblies are located above the kiln body 100. One flue assembly is located at one end of the kiln body 100 along the second direction, and the other flue assembly is located at the other end of the kiln body 100 along the second direction. The lower end of each flue pipe 110 is connected to the upper surface of the kiln body 100, so that the interior of the flue pipe 110 communicates with the kiln cavity. The exhaust pipe 120 is located at the middle position of the kiln body 100 along the second direction, and the two flue assemblies can be symmetrically arranged about the exhaust pipe 120.

[0051] There are two exhaust mechanisms, and the two exhaust mechanisms are respectively set with two flue components. That is, each flue pipe 110 is equipped with a valve plate assembly 210 to control the amount of flue gas flowing into the exhaust pipe 120 from the flue pipe 110.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A shuttle kiln with automatic and efficient pressure regulation, characterized in that, include: The kiln body has a kiln cavity extending along a first direction. The kiln body is provided with a flue pipe and a plurality of flue pipes arranged at intervals along the first direction. One end of each flue pipe is connected to the kiln cavity and the other end is connected to the flue pipe. An exhaust mechanism includes a drive assembly, a transmission shaft, multiple linkage assemblies, and multiple valve plate assemblies. The multiple linkage assemblies and multiple valve plate assemblies are arranged in a one-to-one correspondence with multiple flue pipes. Each valve plate assembly is raised and lowered within a corresponding flue pipe to control the connection and disconnection between the flue pipe and the exhaust pipe. The transmission shaft extends along a first direction. One end of each linkage assembly is fixedly connected to the transmission shaft, and the other end is connected to the corresponding valve plate assembly. The output end of the drive assembly is connected to the transmission shaft to drive the transmission shaft to rotate and, through the linkage assemblies, drive the valve plate assemblies to rise and fall. The testing agency is configured to collect kiln pressure and kiln temperature data of the kiln body; A control mechanism is electrically connected to both the detection mechanism and the drive assembly, with its first direction perpendicular to the vertical direction.

2. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 1, characterized in that, The flue pipe is L-shaped when viewed along the first direction. The valve plate assembly includes a lifting valve plate and a connecting rod. The lifting valve plate is disposed in the flue pipe. The connecting rod extends in the vertical direction. The lower end of the connecting rod is fixedly connected to the lifting valve plate. The upper end of the connecting rod passes through the flue pipe upward and is connected to the connecting rod assembly.

3. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 2, characterized in that, The linkage assembly includes a linkage arm, one end of which is fixedly connected to the drive shaft, and the other end is provided with an elongated through hole extending along a first direction. The elongated through hole extends along the length direction of the linkage arm, and the upper end of the connecting rod is provided with a connecting shaft extending along the first direction. The connecting shaft passes through the elongated through hole.

4. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 3, characterized in that, The upper end of the connecting rod is also provided with a clearance opening, and the end of the connecting rod swing arm away from the transmission shaft is located in the clearance opening, and the two opposite inner walls of the elongated through hole are in contact with the part of the connecting shaft located in the clearance opening.

5. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 1, characterized in that, The drive assembly includes a drive motor, an eccentric wheel, and a transmission swing arm. The output shaft of the drive motor is fixedly connected to the eccentric wheel. One end of the transmission swing arm is fixedly connected to the transmission shaft, and the other end abuts against the outer circumferential surface of the eccentric wheel.

6. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 1, characterized in that, It also includes a limiting swing arm, a first position detector and a second position detector. One end of the limiting swing arm is fixedly connected to the drive shaft, and the other end is located between the first position detector and the second position detector. The first position detector and the second position detector are arranged at intervals in the vertical direction and are electrically connected to the control mechanism. The control mechanism is configured to control the drive assembly to stop operating when the limiting swing arm triggers the first position detector or the second position detector.

7. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 1, characterized in that, The detection mechanism includes a pressure sensor and a temperature sensor. The pressure sensor is configured to collect kiln pressure data of the kiln body, and the temperature sensor is configured to collect kiln temperature data of the kiln body.

8. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 7, characterized in that, The control mechanism is configured to control the operation of the drive components based on the kiln pressure data and the kiln temperature data.

9. The shuttle kiln with automatic and efficient kiln pressure regulation according to claim 1, characterized in that, The inner wall of the flue pipe is provided with a heat insulation layer.

10. The shuttle kiln with automatic and efficient kiln pressure regulation according to any one of claims 1 to 9, characterized in that, Multiple flue pipes together define a flue assembly. The kiln body is provided with two flue assemblies arranged at intervals along a second direction. The exhaust pipe is located between the two flue assemblies and communicates with them. There are two exhaust mechanisms, which are respectively arranged corresponding to the two flue assemblies. The first direction, the second direction, and the up and down direction are perpendicular to each other.

Images