Sintering furnace with external pressure relief

Abstract

This invention provides an externally depressurized sintering furnace, comprising a furnace body, a support platform, a hydraulic cylinder, and a pressure regulating unit. The furnace body has a sintering chamber. The support platform is located above the furnace body. The hydraulic cylinder is vertically arranged and fixed to the support platform. The hydraulic cylinder has a telescopic end that can extend downward and into the sintering chamber. A pressure plate is detachably connected to the telescopic end. The pressure regulating unit is fixed to the furnace body and has multiple lifting and adjusting parts connected to and supporting the support platform. The pressure regulating unit can fine-tune the pressure of the pressure plate by adjusting the lifting and adjusting parts after the hydraulic cylinder drives the pressure plate to press against the metal wire mesh, or adjust the pressure of the pressure plate on the metal wire mesh by adjusting the lifting and adjusting parts during the sintering process. The externally depressurized sintering furnace provided by this invention can cooperate with the hydraulic cylinder to realize fine-tuning or automatic adjustment of the pressure during the sintering process of the metal wire mesh, which can effectively improve the quality of the sintered products.

Description

Technical Field

[0001] This utility model belongs to the field of wire mesh sintering technology, specifically relating to a sintering furnace with external pressure relief. Background Technology

[0002] Metal wire mesh, as a basic structural component that combines air permeability, filtration, and support functions, is widely used in petrochemical, water treatment, aerospace, food, and pharmaceutical industries. In practical applications, multiple layers of metal wire mesh are typically sintered. Through hot pressing under high temperature and certain pressure conditions, metallurgical bonding or mechanical interlocking is formed between the multiple layers of wire mesh.

[0003] In existing technologies, sintering of metal wire mesh typically employs a sintering furnace. For sintering multi-layered metal wire mesh, a pressure-applying structure, such as a hydraulic cylinder, is often installed outside the furnace. This structure releases pressure on the multi-layered wire mesh through an extrusion end extending into the sintering chamber to ensure effective sintering. However, the pressure regulation of the hydraulic cylinder relies on the flow control of the hydraulic system. Affected by the compressibility of the hydraulic oil and pressure losses in the pipeline, the actual pressure fluctuations acting on the wire mesh surface are significant, making it unsuitable for the precise bonding requirements between layers. Furthermore, during the temperature rise within the sintering chamber towards the target temperature, thermal deformation (expansion) occurs in both the metal wire mesh and the extended end of the hydraulic cylinder. This heating phase leads to a pressure increase exceeding the set range. A single hydraulic cylinder cannot provide sufficient thermal deformation, further impacting the sintering effect and the final product quality. Utility Model Content

[0004] This utility model provides a sintering furnace with external pressure relief, which aims to solve the problem of poor practicality caused by the inability of existing external pressure relief sintering furnaces to meet precise requirements and dynamically match thermal deformation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a sintering furnace with external pressure relief, comprising: The furnace body has a sintering cavity; The support platform is located above the furnace body; A hydraulic cylinder is vertically arranged and fixed on the support platform; the hydraulic cylinder has a telescopic end that can extend downward and into the sintering cavity; the telescopic end is detachably connected to a pressure plate; The pressure regulating unit is fixed on the furnace body and has multiple lifting and adjusting parts connected to and supporting the bearing platform. The pressure regulating unit is used to finely adjust the pressure of the pressure plate through each of the lifting and adjusting parts after the hydraulic cylinder drives the pressure plate to press against the metal wire mesh, or to adjust the pressure of the pressure plate on the metal wire mesh through each of the lifting and adjusting parts during the sintering process.

[0006] In one possible implementation, the pressure plate is connected to the telescopic end of the hydraulic cylinder by bolts.

[0007] In one possible implementation, the pressure regulating unit includes: The fine-tuning structure comprises two sets, which are horizontally distributed on both sides of the hydraulic cylinder and mounted on the furnace body. Each set of the fine-tuning structure includes multiple spaced-apart screw jacks. Each screw jack has a horizontally positioned input shaft and a vertically movable push end. The screw jacks in each set of the fine-tuning structure are coaxially connected to each other via a connecting shaft to form a drive shaft group. Multiple connection structures are provided, each of which is installed on each of the push ends for connecting to the support platform and monitoring pressure; each connection structure and the corresponding push end combine to form the lifting adjustment part. A drive structure is provided on the furnace body and has two output ends. The two output ends are respectively connected to the two drive shaft groups and are used to drive the two drive shaft groups to rotate synchronously. Matching controller.

[0008] In one possible implementation, the spacing direction between the two sets of fine-tuning structures is defined as the first direction; the spacing direction between each screw jack in each set of fine-tuning structures is defined as the second direction. The first direction is perpendicular to the second direction; each input shaft is arranged along the second direction.

[0009] In one possible implementation, the driving structure includes: The mounting base is fixedly mounted on the furnace body; A drive shaft is arranged along the first direction and rotatably mounted on the fixed base; An input shaft is arranged along the second direction and rotatably mounted on the fixed base; the inner end of the input shaft is provided with a first bevel gear, which meshes with a second bevel gear arranged on the transmission shaft; There are two output shafts, both of which are arranged along the second direction and are rotatably mounted on the fixed base; the outer ends of each output shaft are coaxially connected to each of the drive shaft groups; the inner ends of each output shaft are provided with a third bevel gear; the two third bevel gears respectively mesh with two fourth bevel gears arranged on the transmission shaft; The driver is fixed on the mounting base and is poweredly connected to the outer end of the input shaft; the driver is electrically connected to the controller.

[0010] In one possible implementation, the driver is a servo motor.

[0011] In one possible implementation, each of the connection structures includes: The lower pressure plate is located at the bottom end of the bearing platform and is fixedly connected to the corresponding top pushing end; The upper pressure plate is located at the top of the bearing platform; Multiple bolted connectors are provided, and each bolted connector is arranged circumferentially at intervals on the outer edge of the lower pressure plate or the upper pressure plate; each bolted connector passes through the bearing platform and fixes the lower pressure plate and the upper pressure plate on the bearing platform; A pressure sensor is disposed between the upper pressure plate and the bearing platform, and is located inside each of the bolted connectors. The pressure sensor is electrically connected to the controller.

[0012] In one possible implementation, the input shaft of each of the screw jacks extends through both sides of the screw jack.

[0013] In the external pressure-relieving sintering furnace provided by this implementation, the hydraulic cylinder, as the initial pressure-applying component, can quickly drive the pressure plate in the sintering chamber down to a range close to the set pressure, completing coarse adjustment to meet the basic pressure requirements. The pressure regulation unit, through multiple lifting adjustment sections, supports and fine-tunes the supporting platform, enabling further fine-tuning of the pressure plate pressure after the hydraulic cylinder has been coarsely adjusted. Multiple lifting adjustment sections act evenly on the supporting platform, avoiding pressure imbalance caused by a single adjustment point, ensuring uniform pressure transmission from the pressure plate to the metal mesh, significantly improving pressure regulation accuracy, and enabling precise matching of the pressure to the critical pressure window required for the metallurgical bonding of multi-layer wire mesh. This avoids overpressure leading to mesh blockage or underpressure leading to insufficient interlayer bonding. Furthermore, during sintering heating or cooling, when thermal expansion or contraction causes the pressure plate on the metal mesh to exceed the set range, the pressure regulation unit can adjust the position of the supporting platform in real time through each lifting adjustment section, thereby driving the hydraulic cylinder and pressure plate to make synchronous fine adjustments, counteracting the effect of thermal deformation on pressure. This dynamic adjustment mechanism breaks through the limitation of existing single hydraulic cylinders being unable to compensate for thermal deformation, and achieves constant pressure maintenance of the pressure plate on the metal wire mesh throughout the sintering process. It avoids passive pressure increases or decreases due to temperature changes, ensuring that the sintering pressure in each area of ​​the multi-layer wire mesh is always in the optimal range, and significantly improves the consistency and stability of the sintered product quality. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the sintering furnace with external pressure relief provided in an embodiment of this utility model (the furnace body is in cross-section). Figure 2 for Figure 1 A schematic diagram of the structure at point A of the sintering furnace with external pressure relief provided in the embodiment; Figure 3 A schematic diagram of the supporting platform, hydraulic cylinder and pressure regulating unit in the sintering furnace with external pressure relief provided for an embodiment of this utility model; Figure 4 for Figure 3 A top view of the sintering furnace with external pressure relief provided in the embodiment.

[0015] Explanation of reference numerals in the attached figures: 10. Furnace body; 11. Sintering chamber; 20. Supporting platform; 30. Hydraulic cylinder; 31. Pressure plate; 40. Pressure regulating unit; 41. Screw jack; 42. Connecting structure; 421. Upper pressure plate; 422. Lower pressure plate; 423. Bolted connector; 424. Pressure sensor; 43. Drive structure; 431. Fixed base; 432. Drive shaft; 433. Input shaft; 434. Output shaft; 435. First bevel gear; 436. Second bevel gear; 437. Third bevel gear; 438. Fourth bevel gear; 439. Driver; 44. Connecting shaft. Detailed Implementation

[0016] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Please refer to the following: Figure 1 and Figure 3 The present invention describes an externally depressurized sintering furnace. The externally depressurized sintering furnace includes a furnace body 10, a supporting platform 20, a hydraulic cylinder 30, and a pressure regulating unit 40. The furnace body 10 has a sintering chamber 11. The supporting platform 20 is located above the furnace body 10. The hydraulic cylinder 30 is vertically arranged and fixed to the supporting platform 20. The hydraulic cylinder 30 has a telescopic end that can extend downwards and into the sintering chamber 11. A pressure plate 31 is detachably connected to the telescopic end. The pressure regulating unit 40 is fixed to the furnace body 10 and has multiple lifting and adjusting parts connected to and supporting the supporting platform 20. The pressure regulating unit 40 can finely adjust the pressure of the pressure plate 31 through each lifting and adjusting part after the hydraulic cylinder 30 drives the pressure plate 31 to press against the metal wire mesh, or adjust the pressure of the pressure plate 31 on the metal wire mesh through each lifting and adjusting part during the sintering process.

[0018] Compared with existing technologies, the sintering furnace with external pressure relief provided in this embodiment uses a hydraulic cylinder 30 as the initial pressure-applying component. This cylinder can quickly drive the pressure plate 31 in the sintering chamber 11 down to a range close to the set pressure, completing a coarse adjustment to meet the basic pressure requirements. The pressure adjustment unit 40 supports and fine-tunes the supporting platform 20 through multiple lifting adjustment parts. After the hydraulic cylinder 30 has been coarsely adjusted, it can further refine the pressure of the pressure plate 31. The multiple lifting adjustment parts act evenly on the supporting platform 20, avoiding pressure imbalance caused by a single adjustment point. This ensures uniform pressure transmission of the pressure plate 31 to the metal mesh, significantly improving pressure adjustment accuracy. This allows the pressure to accurately match the critical pressure window required for the metallurgical bonding of multiple layers of wire mesh, preventing overpressure leading to mesh blockage or underpressure leading to insufficient interlayer bonding. Furthermore, during the sintering heating or cooling process, when thermal expansion or contraction causes the pressure of the pressure plate 31 on the metal wire mesh to exceed the set range, the pressure regulating unit 40 can adjust the position of the bearing platform 20 in real time through each lifting adjustment part, thereby driving the hydraulic cylinder 30 and the pressure plate 31 to make synchronous fine adjustments to counteract the influence of thermal deformation on the pressure. This dynamic adjustment mechanism breaks through the limitation of the existing single hydraulic cylinder 30 being unable to compensate for thermal deformation, and achieves constant maintenance of the pressure of the pressure plate 31 on the metal wire mesh throughout the sintering process. It avoids the passive increase or decrease of pressure due to temperature changes, ensuring that the sintering pressure in each area of ​​the multi-layer wire mesh is always in the optimal range, and significantly improving the consistency and stability of the sintered product quality.

[0019] In addition, the coordinated design of hydraulic cylinder 30 and pressure regulating unit 40 improves the equipment's adaptability to different specifications of metal wire mesh. Regardless of the number of layers, materials, or mesh size of the metal wire mesh, it can be quickly and coarsely adjusted to near the target pressure by hydraulic cylinder 30, and then finely calibrated by pressure regulating unit 40. This eliminates the need for frequent replacement of pressure-applying components, reduces human adjustment errors, and broadens the equipment's applicability.

[0020] In some embodiments, the pressure plate 31 may be as follows: Figure 1 and Figure 3 The structure shown. See also Figure 1 and Figure 3 The pressure plate 31 is connected to the telescopic end of the hydraulic cylinder 30 by bolts.

[0021] The bolted connection is detachable, and the appropriate pressure plate 31 can be quickly replaced by simply removing the bolts during the assembly and disassembly process. This greatly reduces the difficulty of adapting the equipment to different sintering conditions, and it can also adapt to metal wire mesh of different specifications.

[0022] Specifically, multiple studs can be fixed on each pressure plate 31, and a connecting plate is provided on the telescopic end of the hydraulic cylinder 30. The connecting plate has multiple through holes for each stud to pass through. After each stud passes through the through hole, the pressure plate 31 can be locked on the connecting plate by the cooperation of the nut and the stud.

[0023] In some embodiments, the pressure regulating unit 40 described above may employ, for example... Figure 1 and Figure 3 The structure shown. See also Figure 1 and Figure 3 The pressure regulating unit 40 includes a fine-tuning structure, a connecting structure 42, a drive structure 43, and a matching controller. Two sets of fine-tuning structures are horizontally distributed on both sides of the hydraulic cylinder 30 and mounted on the furnace body 10. Each set of fine-tuning structures includes multiple spaced-apart screw jacks 41. Each screw jack 41 has a horizontally positioned input shaft 433 and a vertically movable push end. Each screw jack 41 in each set of fine-tuning structures is coaxially connected to its input shaft 433 via a connecting shaft 44, forming a drive shaft group. Multiple connecting structures 42 are provided, each mounted on a push end, and can be connected to the support platform 20 to monitor pressure. Each connecting structure 42 and its corresponding push end combine to form the lifting and adjusting section. The drive structure 43 is mounted on the furnace body 10 and has two output ends, each connected to one of the two drive shaft groups, enabling the two drive shaft groups to rotate synchronously.

[0024] The controller also needs to be electrically connected to the oil pump of the hydraulic cylinder 30.

[0025] Two sets of fine-tuning structures are distributed along both sides of the hydraulic cylinder 30. Within each set, multiple screw jacks 41 are coaxially connected to each input shaft 433 via a connecting shaft 44, forming a drive shaft group. This ensures that the input shafts 433 of all screw jacks 41 within the same drive shaft group rotate synchronously, thereby achieving synchronous lifting and lowering of the jacking end. The synchronous drive of the two drive shaft groups by the drive structure 43 ensures uniform lifting and lowering of the bearing platform 20, and uniform pressure transmission from the pressure plate 31 to the metal wire mesh. This significantly improves the uniformity and precision of pressure regulation, meeting the precise requirements for pressure uniformity in multi-layered wire mesh bonding.

[0026] When the initial pressure plate 31 contacts the wire mesh or when thermal deformation occurs during sintering, causing pressure increases or decreases, the pressure sensor 424 can quickly capture the pressure deviation and transmit it to the controller. The controller then drives the drive structure 43 to adjust the screw jack 41 according to the preset pressure value, which also includes the hydraulic cylinder 30 (pressure changes in the pressure sensor 424 are also involved during the initial contact with the wire mesh). This adjusts the pressure between the bearing platform 20 and the pressure plate 31, achieving dynamic self-adjustment of pressure. The drive structure 43 synchronously drives the drive shaft assembly through two output ends, ensuring consistency of adjustment actions and reducing transmission errors. Regarding the screw jack 41, existing technology can be used, which is well known to those skilled in the art, and will not be described in detail here.

[0027] In some embodiments, the aforementioned screw jack 41 can employ, for example... Figure 3 The structure shown. See also Figure 3 The first direction is defined as the interval direction between the two sets of fine-tuning structures. The second direction is defined as the interval direction between each screw jack 41 in each set of fine-tuning structures.

[0028] The first direction is perpendicular to the second direction. Each input shaft 433 is arranged along the second direction.

[0029] Two sets of fine-tuning structures are spaced apart along the first direction, and each screw jack 41 in each set of fine-tuning structures is arranged along the second direction, that is, the screw jacks 41 can form a matrix arrangement, as shown in [reference]. Figure 4 This ensures that space is provided for the hydraulic cylinder 30, and also provides multiple support points to ensure the uniformity of the lifting and adjusting of the bearing platform 20 and the uniformity of the pressure distribution of the pressure plate 31.

[0030] Each input shaft 433 is arranged along the second direction, which facilitates the coaxial connection of the input shafts 433 of each screw jack 41 in each group, further ensuring the synchronous adjustment of each screw jack 41.

[0031] In some embodiments, the driving structure 43 described above can be as follows: Figure 4 The structure shown. See also Figure 4 The drive structure 43 includes a fixed base 431, a transmission shaft 432, an input shaft 433, an output shaft 434, a first bevel gear 435, a second bevel gear 436, a third bevel gear 437, a fourth bevel gear 438, and a driver 439.

[0032] A fixed base 431 is fixedly mounted on the furnace body 10. A drive shaft 432 is arranged along a first direction and rotatably mounted on the fixed base 431. An input shaft 433 is arranged along a second direction and rotatably mounted on the fixed base 431. The inner end of the input shaft 433 is provided with a first bevel gear 435, which meshes with a second bevel gear 436 arranged on the drive shaft 432. There are two output shafts 434, both arranged along the second direction and rotatably mounted on the fixed base 431. The outer end of each output shaft 434 is coaxially connected to each drive shaft assembly. The inner end of each output shaft 434 is provided with a third bevel gear 437. The two third bevel gears 437 mesh with two fourth bevel gears 438 arranged on the drive shaft 432. A driver 439 is fixedly mounted on the fixed base 431 and is poweredly connected to the outer end of the input shaft 433. The driver 439 is electrically connected to the controller.

[0033] The input shaft 433 meshes with the second bevel gear 436 of the transmission shaft 432 through the first bevel gear 435, transmitting power to the transmission shaft 432; the transmission shaft 432 then meshes with the third bevel gear 437 of the two output shafts 434 through the two fourth bevel gears 438, transmitting power synchronously to the two output shafts 434, thereby driving the two drive shaft groups.

[0034] The bevel gear meshing has the advantages of stable transmission ratio and low power loss, which can effectively reduce errors in the power transmission process. This synchronous transmission mechanism avoids the skew of the load-bearing platform 20 caused by uneven driving power, ensures uniform pressure transmission of the pressure plate 31, and significantly improves the accuracy of pressure regulation.

[0035] When pressure sensor 424 detects a pressure deviation and feeds it back to the controller, the controller drives driver 439 to operate, enabling rapid power transmission to the screw jack 41. This allows for immediate fine-tuning of the support platform 20, preventing prolonged pressure deviation from affecting the sintering effect. During the sintering heating stage, when thermal expansion causes a sudden increase in pressure, pressure sensor 424 increases its pressure and sends a signal back to the controller. The controller immediately controls driver 439 to reverse, rapidly transmitting power through bevel gears and drive shaft 432 to output shaft 434. This causes screw jack 41 to reverse, raising the height of support platform 20 and fine-tuning the pressure of pressure plate 31 to the set value, achieving rapid pressure correction and maintaining pressure stability during the sintering process.

[0036] In some embodiments, the driver 439 described above may employ, for example... Figure 3 The structure shown. See also Figure 3 The driver 439 is a servo motor.

[0037] The servo motor has a built-in encoder that can provide real-time feedback of the motor's speed and angle to the controller, forming a closed-loop control. Through precise angle control, the servo motor can drive the screw jack 41 to rotate by a corresponding angle, causing the bearing platform 20 to move slightly, thereby achieving precise pressure correction.

[0038] In some embodiments, the connection structure 42 described above can be as follows: Figure 2 The structure shown. See also Figure 2 Each connection structure 42 includes a lower pressure plate 422, an upper pressure plate 421, a bolted connector 423, and a pressure sensor 424.

[0039] The lower pressure plate 422 is located at the bottom of the support platform 20 and is fixedly connected to the corresponding pushing end. The upper pressure plate 421 is located at the top of the support platform 20. Multiple bolt connectors 423 are provided, each bolt connector 423 being circumferentially spaced at the outer edge of the lower pressure plate 422 or the upper pressure plate 421. Each bolt connector 423 passes through the support platform 20 and fixes the lower pressure plate 422 and the upper pressure plate 421 to the support platform 20. A pressure sensor 424 is located between the upper pressure plate 421 and the support platform 20, inside each bolt connector 423, and is electrically connected to the controller.

[0040] The lower pressure plate 422 is fixedly connected to the pushing end of the screw jack 41, and the upper pressure plate 421 is located at the top of the bearing platform 20. Bolt connectors 423 are distributed in a ring at intervals along the edge, fastening the lower pressure plate 422 and the upper pressure plate 421 to the bearing platform 20. At the same time, a pressure sensor 424 is installed between the upper pressure plate 421 and the bearing platform 20. The ring-shaped distribution of bolt connectors 423 avoids uneven local stress on the bearing platform 20 caused by single-point connection at the edge. At the same time, the clamping effect of the upper pressure plate 421 and the lower pressure plate 422 ensures that the bearing platform 20 and the connecting structure 42 are tightly fitted without loosening or gaps, avoiding loss or lag in the pressure transmission process.

[0041] The bearing platform 20 is located above each screw jack 41. After the hydraulic cylinder 30 adjusts the pressure plate 31 to its position and fine-tuning is performed, the screw jacks 41 drive the bearing platform 20 downward. The hydraulic cylinder 30 applies a reverse force to the bearing platform 20, which in turn causes a pressure change in the pressure sensor 424 between the upper pressure plate 421 and the bearing platform 20. The pressure sensor 424 is electrically connected to the controller and can feed back the pressure signal to the controller in real time, forming a closed-loop regulation. When a pressure deviation occurs during the sintering process, the sensor accurately captures the deviation signal, and the controller drives the drive structure 43 to adjust the screw jacks 41 according to the signal, thereby achieving dynamic pressure correction.

[0042] In addition, the connecting structure 42 is detachable, which facilitates later maintenance.

[0043] Specifically, regarding the bolt connector 423, it can ensure the bolt and the nut that matches the bolt, and through holes are provided on both the upper pressure plate 421 and the lower pressure plate 422.

[0044] In some embodiments, the aforementioned screw jack 41 can employ, for example... Figure 3 The structure shown. See also Figure 3 The input shaft 433 in each screw jack 41 passes through both sides of the screw jack 41, which facilitates the coaxial connection of each screw jack 41 in each fine-tuning structure with the connecting shaft 44.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sintering furnace with off-oven pressure relief, characterized in that, include: The furnace body has a sintering cavity; The support platform is located above the furnace body; The hydraulic cylinder is vertically mounted and fixed to the support platform; The hydraulic cylinder has a telescopic end that can extend downward and into the sintering chamber; the telescopic end is detachably connected to a pressure plate. The pressure regulating unit is fixed on the furnace body and has multiple lifting and adjusting parts connected to and supporting the bearing platform. The pressure regulating unit is used to finely adjust the pressure of the pressure plate through each of the lifting and adjusting parts after the hydraulic cylinder drives the pressure plate to press against the metal wire mesh, or to adjust the pressure of the pressure plate on the metal wire mesh through each of the lifting and adjusting parts during the sintering process.

2. The off-oven pressure-relief sintering furnace according to claim 1, wherein The pressure plate is connected to the telescopic end of the hydraulic cylinder by bolts.

3. The flash release sintering furnace according to any one of claims 1 to 2, wherein The pressure regulating unit includes: The fine-tuning structure comprises two sets, which are distributed horizontally on both sides of the hydraulic cylinder and are both mounted on the furnace body. Each set of the fine-tuning structure includes multiple spaced-apart screw jacks. Each screw jack has a horizontally positioned input shaft and a vertically movable push end. Each screw jack in each set of the fine-tuning structure is coaxially connected to the input shaft via a connecting shaft to form a drive shaft group. Multiple connection structures are provided, each of which is installed on each of the push ends for connecting to the support platform and monitoring pressure; each connection structure and the corresponding push end combine to form the lifting adjustment part. A drive structure is provided on the furnace body and has two output ends. The two output ends are respectively connected to the two drive shaft groups and are used to drive the two drive shaft groups to rotate synchronously. Matching controller.

4. The off-oven pressure-relief sintering furnace according to claim 3, wherein The interval direction between the two sets of fine-tuning structures is defined as the first direction; the interval direction of each screw jack in each set of fine-tuning structures is defined as the second direction. The first direction is perpendicular to the second direction; each input shaft is arranged along the second direction.

5. The off-oven pressure-relief sintering furnace according to claim 4, wherein The driving structure includes: The mounting base is fixedly mounted on the furnace body; A drive shaft is arranged along the first direction and rotatably mounted on the fixed base; An input shaft is arranged along the second direction and rotatably mounted on the fixed base; the inner end of the input shaft is provided with a first bevel gear, which meshes with a second bevel gear arranged on the transmission shaft; There are two output shafts, both of which are arranged along the second direction and are rotatably mounted on the fixed base; the outer ends of each output shaft are coaxially connected to each of the drive shaft groups; the inner ends of each output shaft are provided with a third bevel gear; the two third bevel gears respectively mesh with two fourth bevel gears arranged on the transmission shaft; The driver is fixed on the mounting base and is poweredly connected to the outer end of the input shaft; the driver is electrically connected to the controller.

6. The off-oven pressure-relief sintering furnace according to claim 5, wherein The driver is a servo motor.

7. The off-oven pressure-relief sintering furnace according to claim 3, wherein Each of the aforementioned connection structures includes: The lower pressure plate is located at the bottom end of the bearing platform and is fixedly connected to the corresponding top pushing end; The upper pressure plate is located at the top of the bearing platform; A plurality of bolt connectors are arranged annularly and spaced apart at the outer edge of the lower pressing disc or the upper pressing disc; each of the bolt connectors penetrates the bearing platform and fixes the lower pressing disc and the upper pressing disc on the bearing platform; A pressure sensor is arranged between the upper pressing disc and the bearing platform and located at the inner side of each of the bolt connectors, and the pressure sensor is electrically connected with the controller.

8. The off-oven pressure-relief sintering furnace according to claim 3, wherein The input shafts of the screw elevators penetrate through both sides of the screw elevators.

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