Pressure sintering furnace with side feeding structure

Abstract

The invention is suitable for the technical field of pressure sintering furnaces, and provides a pressure sintering furnace with a side feeding structure. Comprising a furnace body unit, a furnace door unit installed on the furnace body unit, a support unit arranged on one side of the furnace door unit, a feeding unit installed on the support unit and capable of feeding materials, and a flow guide unit capable of guiding airflow in the furnace body unit. A furnace cavity is formed in the furnace body unit, a furnace door is rotationally installed on the outer side of the furnace cavity, and a locking assembly capable of locking the furnace door is arranged between the furnace door and the furnace cavity. The device solves the problems that sealing performance is poor due to the fact that the furnace door is arranged on the side wall of the furnace body, powder materials splash due to flowing of air flow in the furnace body and finally adhere to the furnace wall to form slag, and sintering efficiency is affected, and achieves the purposes that the furnace door is locked in a rotating mode, sealing performance is good, air flow is guided in the feeding process, air pressure is balanced, and sintering efficiency is improved. And the probability that the powder material splashes to form slag is reduced.

Description

Technical Field

[0001] This invention relates to the field of pressure sintering furnace technology, and more specifically, to a pressure sintering furnace having a side-feed structure. Background Technology

[0002] A pressure sintering furnace is a device that uses hot pressing to sinter powders of metals, ceramics, and some refractory metal intermediate compounds. Most existing pressure sintering furnaces have their doors located at the top of the furnace body, therefore, materials need to be conveyed from the top or bottom of the furnace during loading.

[0003] Feeding material from the top of the pressure sintering furnace requires operation from a height, which is inconvenient and reduces the stability of the feeding device structure due to the increased feeding height. Feeding material from the bottom of the pressure sintering furnace requires placing the feeding device on the lower pressure head for conveying, which also affects the normal operation of the lower pressure head. Therefore, the feeding structure of the pressure sintering furnace needs to be changed from a top-bottom feeding method to a side feeding method that is easier to operate and does not affect the normal operation of the pressure sintering furnace.

[0004] To enable side feeding, the furnace door needs to be moved from the top of the furnace to the side wall. The furnace door can no longer rely on its own weight to seal the furnace, which will instead reduce the sealing performance of the furnace door and affect the sintering effect of the pressure sintering furnace.

[0005] At the same time, after the furnace lid is opened, the high-pressure gas inside the furnace diffuses outward. During the airflow diffusion process, it impacts some of the powder material inside the furnace cavity, causing the powder material to splash and spread. The powder material splashes onto the furnace wall of the pressure sintering furnace, and under the action of high temperature, it adheres to the furnace wall to form slag, affecting the sintering efficiency of the pressure sintering furnace. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a pressure sintering furnace with a side-feeding structure that features a rotating and locking furnace door, good sealing performance, guides airflow, balances air pressure, prevents airflow from contacting powder materials, and reduces the probability of powder materials splashing and forming slag.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pressure sintering furnace with a side feeding structure includes a furnace body unit, a furnace door unit installed on the furnace body unit, a support unit disposed on one side of the furnace door unit, a feeding unit installed on the support unit for feeding materials, and a flow guiding unit for guiding the airflow inside the furnace body unit.

[0009] The furnace body unit has a furnace cavity inside, and a furnace door is rotatably installed on the outside of the furnace cavity. A locking assembly is provided between the furnace door and the furnace cavity to lock the furnace door. The support unit includes a support base that can move horizontally and a lifting assembly that can be raised and lowered vertically and installed on the support base. The feeding unit includes a feeding mounting block sleeved on the lifting assembly and a telescopic conveying assembly that can feed materials and installed on the feeding mounting block. The flow guiding unit includes a flow guiding mounting component installed on the side wall of the feeding mounting block and a flow guiding box connected to the flow guiding mounting component through a lateral support component. A docking ring is provided on the side of the flow guiding box near the furnace cavity.

[0010] The furnace body unit includes a furnace shell with a rectangular structure, and a cylindrical furnace cavity is formed inside the furnace shell along the horizontal direction.

[0011] The furnace door is installed on the side wall of the furnace shell and is configured as a disc structure whose size is adapted to the furnace cavity. A locking ring with a circular structure is fitted on the side of the furnace door near the furnace cavity. A matching ring is installed on the side wall of the furnace shell at the position corresponding to the locking ring.

[0012] A rotary cylinder is connected to the furnace door via a connector, and a rotating assembly that can drive the furnace door to rotate is connected to the side of the rotary cylinder away from the furnace door.

[0013] The present invention is further configured such that: four sets of locking blocks are symmetrically arranged on the outer wall of the locking ring; the mating ring is configured as a circular ring structure with an inner diameter adapted to the outer diameter of the locking ring; and a mating groove adapted to the shape of the locking block is provided on the mating ring at a position corresponding to the position of the locking block.

[0014] By adopting the above technical solution, after the furnace door is closed, the locking block on the locking ring can enter the inner part of the matching slide groove. During the process of the rotating cylinder driving the furnace door to rotate, the locking ring can be driven to continue to rotate in the counterclockwise direction, and lock with the matching ring along the direction of the matching slide groove, thereby realizing the locking of the furnace door.

[0015] The present invention is further configured such that: the support base is configured as an L-shaped structure, and a horizontal guide rail is slidably connected to its bottom, the horizontal guide rail is arranged along the length direction of the furnace unit and is flush with the bottom of the furnace unit.

[0016] The lifting assembly includes a lifting frame arranged in a vertical direction, which is installed on the top of the support base and a lifting motor is installed on its top.

[0017] The present invention is further configured such that: the output end of the lifting motor is rotatably connected to a lifting screw, the lifting screw is arranged in a vertical direction and a feeding mounting block is sleeved on its outer side wall, and the lifting screw and the feeding mounting block mesh with each other.

[0018] The present invention is further configured such that: a feeding support plate is rotatably connected to the side of the feeding mounting block away from the lifting component; a feeding motor is installed at the bottom of the feeding mounting block; and the feeding motor is rotatably connected to the feeding support plate through a feeding swing arm.

[0019] The present invention is further configured such that: the telescopic conveying assembly includes a support frame vertically installed on the top of the feeding bearing plate, and two sets of the support frames are symmetrically arranged about the length of the feeding bearing plate, and a conveyor belt is arranged between the two sets of the support frames.

[0020] The present invention is further configured such that: a tensioning roller for tensioning the conveyor belt is provided at each end of the two sets of support frames; a conveyor motor and a drive roller are installed on the side wall of the support frame near the feeding mounting block; a winding roller for winding the conveyor belt is installed in the middle of the support frame; and a telescopic module for telescopic movement is installed at the end of the support frame away from the feeding mounting block.

[0021] The present invention is further configured such that: the telescopic module includes two sets of telescopic mounting plates arranged along the width direction of the telescopic conveying component, and the bottom of the two sets of telescopic mounting plates is equipped with telescopic cylinders and the top is equipped with two sets of telescopic connecting rods.

[0022] The output end of the telescopic cylinder is connected to a telescopic crossbar that is set along the width direction of the telescopic conveying assembly.

[0023] By adopting the above technical solution, the telescopic cylinder can drive the telescopic crossbar to move along the length of the telescopic conveying assembly. With the cooperation of the telescopic connecting rod, it simultaneously drives the take-up roller and conveyor belt to move along the length of the telescopic conveying assembly. This allows the telescopic conveying assembly to pass through the conveying through-hole on the guide box and enter the furnace cavity to convey powdered materials.

[0024] The present invention is further configured such that: the flow guide box is configured as a hollow rectangular structure, and a docking ring is provided on the side of the flow guide box near the furnace cavity; the top of the flow guide box is provided with a flow guide pipe for airflow discharge; and a conveying through hole is provided on the side of the flow guide box away from the furnace cavity for the telescopic conveying assembly to pass through.

[0025] By adopting the above technical solution, when taking out materials, the docking ring can be docked with the furnace door. After the docking ring is docked with the furnace door, the high-pressure airflow inside the furnace cavity can be discharged upward through the guide pipe. When feeding materials, the furnace door is opened and the docking ring is docked with the furnace cavity, which facilitates the feeding operation.

[0026] The present invention is further configured such that: an adjusting motor is installed inside the flow guide mounting component, the adjusting motor is rotatably connected to the lateral support component through an adjusting lever, and the side wall of the lateral support component away from the flow guide mounting component is connected to the side wall of the flow guide box.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. A locking ring is installed on the furnace door, and a mating ring is installed on the side wall of the furnace shell. A locking block is set on the locking ring, and a mating groove is set on the mating ring. By rotating the locking ring, the locking block and the mating groove are locked and released, so as to achieve the purpose of loosening and locking the furnace door, thereby ensuring the reliability of the connection between the furnace door and the furnace cavity, improving the sealing of the furnace cavity, and avoiding the impact of poor sealing on the sintering effect.

[0029] 2. A connecting ring is installed on the flow guide box to connect with the furnace door, and a flow guide pipe is installed at the top. A butterfly valve is installed on the side wall of the furnace door. The high-pressure airflow inside the furnace cavity can flow along the butterfly valve and the flow guide pipe, and be discharged upwards. This achieves pressure balance inside and outside the furnace cavity and changes the direction of the high-pressure airflow inside the furnace cavity.

[0030] 3. Even if airflow is generated inside the furnace cavity, it can be discharged through the butterfly valve and the guide pipe on the guide box to avoid the airflow coming into contact with the powder material inside the furnace cavity, causing the powder material to splash and eventually causing the powder material to adhere to the furnace wall to form slag, which affects the sintering efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the pressure sintering furnace with a side-feeding structure according to the present invention.

[0032] Figure 2 This is a schematic diagram of the structure of the furnace body unit and the furnace door unit in this invention.

[0033] Figure 3 This is a schematic diagram of the furnace door unit in this invention.

[0034] Figure 4 This is a schematic diagram of the locking ring and its engagement in this invention.

[0035] Figure 5 This is a schematic diagram of the structure of the support unit, feeding unit and flow guiding unit in this invention.

[0036] Figure 6 This is a schematic diagram of the feeding unit in this invention.

[0037] Figure 7 This is an exploded structural diagram of the feeding unit in this invention.

[0038] Figure 8 This is a schematic diagram of the telescopic conveyor assembly in this invention.

[0039] Figure 9 This is a schematic diagram of the flow guiding unit in this invention.

[0040] Figure 10 for Figure 9A magnified view of a portion of region A in the middle.

[0041] Explanation of reference numerals in the attached drawings: 1. Furnace body unit; 11. Furnace shell; 12. Furnace cavity;

[0042] 2. Furnace door unit; 21. Rotating assembly; 211. Fixing rod; 212. Rotating frame; 22. Furnace door; 221. Furnace door handle; 222. Connecting piece; 23. Locking assembly; 231. Rotary cylinder; 232. Locking ring; 233. Locking block; 234. Mating ring; 235. Mating groove;

[0043] 3. Support unit; 31. Horizontal guide rail; 32. Support base; 321. Mounting plate; 33. Lifting assembly; 331. Lifting frame; 332. Lifting motor; 333. Lifting screw; 334. Sliding rod;

[0044] 4. Feeding unit; 41. Feeding mounting block; 42. Feeding support plate; 43. Feeding swing arm; 44. Feeding motor; 45. Telescopic conveyor assembly; 451. Support frame; 452. Conveyor motor; 453. Drive roller; 454. Tension roller; 455. Take-up roller; 456. Conveyor belt; 457. Telescopic module; 4571. Telescopic mounting plate; 4572. Telescopic cylinder; 4573. Telescopic connecting rod; 4574. Telescopic crossbar;

[0045] 5. Flow guiding unit; 51. Flow guiding installation component; 52. Adjusting motor; 53. Adjusting swing arm; 54. Lateral support component; 55. Flow guiding box; 551. Connecting ring; 552. Conveying through hole; 553. Flow guiding pipe. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0048] Please see Figure 1-10 The present invention provides the following technical solutions:

[0049] Example 1, please refer to Figure 1-4 The furnace includes a furnace body unit 1 and a furnace door unit 2 installed on the side wall of the furnace body unit 1. The furnace door unit 2 can rotate relative to the furnace body unit 1 to open and close. It can also be locked to the furnace body unit 1 by rotation, thereby improving the sealing of the furnace body unit 1 and ensuring the sintering effect.

[0050] Please see Figure 1-2The furnace body unit 1 includes a furnace shell 11 and a furnace cavity 12. The furnace shell 11 is configured as a rectangular structure, and a cylindrical furnace cavity 12 is opened in the horizontal direction inside the furnace shell 11. Powdered materials can be transported into the furnace cavity 12 for sintering.

[0051] Please see Figure 1-4 The furnace door unit 2 includes a rotating assembly 21, a fixed rod 211, a rotating frame 212, a furnace door 22, a furnace door handle 221, a connector 222, a locking assembly 23, a rotary cylinder 231, a locking ring 232, a locking block 233, a mating ring 234, and a mating groove 235. A rotating assembly 21 capable of rotating the furnace door 22 is installed on the side wall of the furnace body unit 1. The furnace door 22 is installed on the outside of the furnace cavity 12, and is mounted on the side wall of the furnace shell 11, and is configured as a disc structure whose size is adapted to the furnace cavity 12. A locking assembly 23 is provided between the furnace door 22 and the furnace cavity 12 to lock the furnace door 22. The locking assembly 23 ensures the reliable connection between the furnace door 22 and the furnace cavity 12, thereby improving the sealing performance inside the furnace cavity 12.

[0052] Please see Figure 1-4 The rotating assembly 21 includes a fixed rod 211 mounted on the side wall of the furnace shell 11 and a rotating frame 212 connected to the furnace door 22. The fixed rod 211 is mounted on one side of the furnace cavity 12 and is arranged vertically. The rotating frame 212 is a rectangular frame structure arranged vertically. One side of the rotating frame 212 is rotatably connected to the fixed rod 211, and the other side is connected to the furnace door 22 through a rotary cylinder 231. During the rotation of the rotating frame 212 relative to the fixed rod 211, it can synchronously drive the furnace door 22 to rotate, realizing the opening and closing of the furnace door 22. A connector 222 is provided at the center of the side of the furnace door 22 away from the furnace cavity 12, and two sets of furnace door handles 221 are symmetrically arranged at both ends. Pulling the furnace door handles 221 can open and close the furnace door 22. The side wall of the connector 222 is connected to the rotary cylinder 231, and the furnace door 22 and the rotary cylinder 231 are connected through the connector 222. The rotary cylinder 231 can drive the furnace door 22 to rotate. A rotating frame 212 is connected to the side of the rotary cylinder 231 away from the furnace door 22, thereby connecting the furnace door 22 and the rotating frame 212.

[0053] Please see Figure 1-4A locking ring 232 with a circular structure is fitted on the side of the furnace door 22 near the furnace cavity 12. The locking ring 232 is shaped to fit the furnace door 22, and four sets of locking blocks 233 are symmetrically arranged on its outer side wall. A mating ring 234 is installed on the side wall of the furnace shell 11 at the position corresponding to the locking ring 232. The mating ring 234 is a circular structure with an inner diameter that matches the outer diameter of the locking ring 232. A mating groove 235 with a shape that matches the locking block 233 is opened on the mating ring 234 at the position corresponding to the locking block 233. After the furnace door 22 is closed, the locking block 233 on the locking ring 232 can enter the mating groove 235. The locking ring 232 can be locked with the mating ring 234 along the direction of the mating groove 235 by continuing to rotate counterclockwise.

[0054] Specifically, when the furnace door needs to be opened, the rotary cylinder 231 drives the furnace door 22 to rotate clockwise, causing the locking block 233 on the locking ring 232 to rotate to the opening of the matching slide groove 235, thus loosening the lock on the furnace door 22. Then, by pulling the furnace door handle 221, the furnace door 22 and the rotating frame 212 rotate counterclockwise relative to the fixed rod 211, thereby opening the furnace door 22.

[0055] When the furnace door needs to be closed, pull the furnace door handle 221 to rotate the furnace door 22 and the rotating frame 212 clockwise relative to the fixed rod 211 until the furnace door 22 is flush with the side wall of the furnace shell 11 and closed. At this time, the locking block 233 on the locking ring 232 simultaneously enters the mating groove 235. After the furnace door 22 is closed, the furnace door 22 can be rotated counterclockwise by the rotating cylinder 231, so that the locking ring 232 locks with the mating ring 234 along the mating groove 235, thereby locking the furnace door 22.

[0056] The rotation of the locking ring 232 causes the locking block 233 to lock and loosen with the mating groove 235 on the mating ring 234, thereby achieving the purpose of loosening and locking the furnace door 22, ensuring the reliability of the connection between the furnace door 22 and the furnace cavity 12, improving the sealing of the furnace cavity 12, and avoiding the effect of sintering due to poor sealing.

[0057] Example 2, please refer to Figure 1 and Figure 5-10 This second embodiment improves upon the first embodiment as follows: when the furnace door 22 is opened, the high-pressure gas inside the furnace cavity 12 flows out of the furnace cavity 12, thereby contacting the powder material and causing the powder material to splash. To avoid interference from the high-pressure airflow, the airflow needs to be guided to balance the air pressure inside and outside the furnace cavity 12.

[0058] Please see Figure 1 and Figure 5-10The furnace includes a support unit 3 located on one side of the furnace door unit 2, a feeding unit 4 mounted on the support unit 3, and a flow guiding unit 5. The support unit 3 can move horizontally and vertically, thereby adjusting the positions of the feeding unit 4 and the flow guiding unit 5. The feeding unit 4 conveys the powder material into the furnace cavity 12, and the flow guiding unit 5 guides the airflow inside the furnace cavity 12 to prevent the powder material from splashing due to the airflow.

[0059] Please see Figure 1 and Figure 5 The support unit 3 includes a horizontal guide rail 31, a support base 32, a mounting plate 321, a lifting assembly 33, a lifting frame 331, a lifting motor 332, a lifting screw 333, and a sliding rod 334. The horizontal guide rail 31 is arranged along the length of the furnace body unit 1 and is flush with the bottom of the furnace body unit 1. The support base 32 is slidably mounted on the top of the horizontal guide rail 31, and the support base 32 can move along the direction of the horizontal guide rail 31 to complete the horizontal position adjustment. The support base 32 is designed with an L-shaped structure, and its side wall is provided with a mounting plate 321 in the vertical direction. The lifting assembly 33, which can be raised and lowered in the vertical direction, is connected to the mounting plate 321, and the support base 32 and the lifting assembly 33 are connected through the mounting plate 321.

[0060] Please see Figure 1 and Figure 5 The lifting assembly 33 includes a vertically oriented lifting frame 331, which is mounted on top of the support base 32, and a lifting motor 332 is mounted on its top. A lifting screw 333 is rotatably connected to the output end of the lifting motor 332. The lifting screw 333 is vertically oriented and mounted at the axis of the lifting frame 331. Two sets of sliding rods 334 are symmetrically arranged at both ends of the lifting screw 333. A feeding mounting block 41 is sleeved on the outer wall of the lifting screw 333. The lifting screw 333 and the feeding mounting block 41 mesh with each other, and the feeding mounting block 41 is slidably mounted on the two sets of sliding rods 334. The lifting motor 332 drives the lifting screw 333 to rotate. Through the meshing of the lifting screw 333 with the feeding mounting block 41, the feeding mounting block 41 moves vertically relative to the sliding rods 334, thus achieving the lifting and lowering of the feeding mounting block 41.

[0061] Please see Figure 5-8The feeding unit 4 includes a feeding mounting block 41, a feeding bearing plate 42, a feeding swing rod 43, a feeding motor 44, a telescopic conveying assembly 45, a support frame 451, a conveying motor 452, a drive roller 453, a tension roller 454, a take-up roller 455, a conveyor belt 456, a telescopic module 457, a telescopic mounting plate 4571, a telescopic cylinder 4572, a telescopic connecting rod 4573, and a telescopic crossbar 4574. The feeding mounting block 41 is fitted onto the lifting assembly 33 and can move synchronously with the lifting assembly 33. A through hole is provided in the middle of the feeding mounting block 41 to engage with the lifting screw 333, achieving a meshing connection with the lifting screw 333. Through holes are provided at both ends of the feeding mounting block 41 to fit the sliding rod 334, achieving a sliding connection with the sliding rod 334. A feeding mounting block 41 is rotatably connected to a feeding support plate 42 on the side away from the lifting assembly 33. A feeding motor 44 is mounted at the bottom of the feeding mounting block 41, and a feeding swing arm 43 is connected to the output end of the feeding motor 44. The other end of the feeding swing arm 43 is rotatably connected to the feeding support plate 42. The feeding motor 44 drives the feeding swing arm 43 to rotate, thereby causing the feeding support plate 42 to move horizontally for fine-tuning of its position.

[0062] Please see Figure 5-8 A telescopic conveyor assembly 45 is installed on the top of the feeding support plate 42, on which powder materials can be placed for conveying. The telescopic conveyor assembly 45 includes a support frame 451 vertically installed on the top of the feeding support plate 42. Two sets of support frames 451 are symmetrically arranged about the length of the feeding support plate 42, and a conveyor belt 456 is arranged between the two sets of support frames 451. The support frames 451 connect the telescopic conveyor assembly 45 to the feeding support plate 42 and provide an installation environment for the conveyor belt 456. A conveyor motor 452 and a drive roller 453 are installed on the side wall of the support frame 451 near the feeding mounting block 41. A tensioning roller 454 for tensioning the conveyor belt 456 is provided at each end of the two sets of support frames 451. A winding roller 455 for winding the conveyor belt 456 is installed in the middle of the support frame 451. A telescopic module 457 is installed at the end of the support frame 451 away from the feeding mounting block 41. The conveyor belt 456 passes sequentially through the tension roller 454, the drive roller 453, and the take-up roller 455 near the side of the conveyor motor 452, and finally passes through the tension roller 454 installed at one end of the telescopic module 457. The conveyor motor 452 can drive the drive roller 453 to rotate, and finally, under the tension roller 454 and the take-up roller 455, drive the conveyor belt 456 to rotate, thereby realizing the conveying of powder materials.

[0063] Please see Figure 5-8The telescopic module 457 includes two sets of telescopic mounting plates 4571 arranged along the width direction of the telescopic conveying assembly 45. Telescopic cylinders 4572 are mounted at the bottom of the two sets of telescopic mounting plates 4571, and two sets of telescopic connecting rods 4573 are mounted at the top. The telescopic cylinders 4572 and telescopic connecting rods 4573 are arranged along the length direction of the telescopic conveying assembly 45, and the telescopic connecting rods 4573 can extend and retract along the length direction of the telescopic conveying assembly 45. The output end of the telescopic cylinder 4572 is connected to a telescopic crossbar 4574 arranged along the width direction of the telescopic conveying assembly 45, and the telescopic crossbar 4574 is connected to the end of the telescopic connecting rods 4573. The telescopic cylinder 4572 can drive the telescopic crossbar 4574 to move along the length direction of the telescopic conveying assembly 45. With the cooperation of the telescopic connecting rods 4573, the cylinder simultaneously drives the take-up roller 455 and the conveyor belt 456 mounted on top of the cylinder to move along the length direction of the telescopic conveying assembly 45, ultimately realizing the extension and retraction of the telescopic conveying assembly 45.

[0064] Please see Figure 5 and Figure 9-10 The flow guiding unit 5 includes a flow guiding mounting component 51, an adjusting motor 52, an adjusting swing rod 53, a lateral support component 54, a flow guiding box 55, a docking ring 551, a conveying through hole 552, and a flow guiding pipe 553. The flow guiding mounting component 51 is installed on the side wall of the feeding mounting block 41 and can move synchronously with the feeding mounting block 41, thus connecting the flow guiding unit 5 to the feeding mounting block 41. An adjusting motor 52 is installed inside the flow guiding mounting component 51, and an adjusting swing rod 53 is connected to the output end of the flow guiding mounting component 51. The other end of the adjusting swing rod 53 is rotatably connected to the lateral support component 54. The adjusting motor 52 drives the adjusting swing rod 53 to rotate, thereby causing the lateral support component 54 to move horizontally for fine-tuning of its position.

[0065] Please see Figure 5 and Figure 9-10The side wall of the lateral support 54, away from the flow guide installation 51, is connected to the side wall of the flow guide box 55. The flow guide box 55 is a hollow rectangular structure, and a docking ring 551 is provided on the side near the furnace cavity 12. Two square butterfly valves are installed on the side wall of the furnace door 22. These two butterfly valves can be used to discharge the airflow inside the furnace cavity 12. The docking ring 551 can dock with the furnace door 22. In addition, two grooves are opened on the outer wall of the docking ring 551, and sealing gaskets are provided inside the two grooves. When the docking ring 551 docks with the furnace door 22, the rotating frame 212 is embedded in the groove to avoid interference between the docking ring 551 and the rotating frame 212. A flow guide pipe 553 is provided on the top of the flow guide box 55 for airflow discharge. After the docking ring 551 docks with the furnace door 22, the high-pressure airflow inside the furnace cavity 12 can be discharged through the butterfly valves and the flow guide pipe 553. The guide box 55 has a conveying through hole 552 on the side away from the furnace door 22, through which the telescopic conveying assembly 45 can pass. When the furnace door 22 is opened, the telescopic conveying assembly 45 can pass through the guide box 55 through the conveying through hole 552 to feed material into the furnace cavity 12.

[0066] Specifically, when feeding powdered materials, the furnace door 22 needs to be opened first. After the furnace door 22 is opened, the flow guiding unit 5 and the feeding unit 4 move synchronously towards the furnace cavity 12. That is, during the feeding process, the feeding unit 4 and the flow guiding unit 5 can be adjusted in the horizontal direction by the movement of the support base 32 along the horizontal guide rail 31. Then, the lifting motor 332 drives the lifting screw 333 to rotate. By using the engagement of the lifting screw 333 with the feeding mounting block 41, the feeding mounting block 41 moves in the vertical direction relative to the sliding rod 334, thereby adjusting the vertical position of the feeding unit 4 and the flow guiding unit 5.

[0067] During the position adjustment process of the feeding unit 4 and the flow guiding unit 5, the feeding motor 44 drives the feeding swing rod 43 to rotate to make a fine adjustment to the position of the feeding bearing plate 42, and the adjusting motor 52 drives the adjusting swing rod 53 to make a fine adjustment to the position of the lateral support 54, so that the docking ring 551 on the flow guiding box 55 is finally docked with the furnace cavity 12.

[0068] The telescopic cylinder 4572 drives the telescopic crossbar 4574 to move along the length of the telescopic conveyor assembly 45. With the cooperation of the telescopic connecting rod 4573, the take-up roller 455 and the conveyor belt 456 move synchronously along the length of the telescopic conveyor assembly 45. This allows the telescopic conveyor assembly 45 to pass through the conveying through-hole 552 on the guide box 55 and enter the furnace chamber 12. After the telescopic conveyor assembly 45 is in place, the powder material to be fed can be placed on top of the telescopic conveyor assembly 45. The conveyor motor 452 drives the drive roller 453 to rotate, and under the tension roller 454 and the take-up roller 455, the conveyor belt 456 rotates, thus realizing the conveying of the powder material.

[0069] Subsequently, when material needs to be removed, if the furnace door 22 is opened directly, the high-pressure gas inside the furnace cavity 12 will flow towards the furnace door 22. Therefore, the flow guiding unit 5 and the feeding unit 4 are controlled to move synchronously towards the furnace cavity 12 again. At this time, the docking ring 551 is tightly docked with the furnace door 22, the butterfly valve on the furnace door 22 is opened, and the high-pressure gas flow inside the furnace cavity 12 can flow along the flow guiding pipe 553 and be discharged upwards. While achieving pressure balance inside and outside the furnace cavity 12, the flow direction of the high-pressure gas flow inside the furnace cavity 12 is changed to avoid powder material splashing, which would ultimately cause the powder material to adhere to the furnace wall and form slag, affecting the sintering efficiency.

[0070] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A pressure sintering furnace with a side-feeding structure, characterized in that: It includes a furnace body unit (1), a furnace door unit (2) installed on the furnace body unit (1), a support unit (3) set on one side of the furnace door unit (2), a feeding unit (4) installed on the support unit (3) for feeding materials, and a flow guiding unit (5) for guiding the airflow inside the furnace body unit (1); The furnace body unit (1) has a furnace cavity (12) inside, and a furnace door (22) is rotatably installed on the outside of the furnace cavity (12). A locking assembly (23) is provided between the furnace door (22) and the furnace cavity (12) to lock the furnace door (22). The support unit (3) includes a support base (32) that can move horizontally and a lifting assembly (33) that can be raised and lowered vertically and mounted on the support base (32). The feeding unit (4) The system includes a feeding mounting block (41) sleeved on the lifting assembly (33) and a telescopic conveying assembly (45) installed on the feeding mounting block (41) for feeding materials. The flow guiding unit (5) includes a flow guiding mounting component (51) installed on the side wall of the feeding mounting block (41) and a flow guiding box (55) connected to the flow guiding mounting component (51) through a lateral support component (54). The flow guiding box (55) is provided with a docking ring (551) on the side near the furnace cavity (12). The furnace body unit (1) includes a furnace shell (11) configured as a rectangular structure, and a cylindrical furnace cavity (12) is opened in the horizontal direction inside the furnace shell (11); The furnace door (22) is installed on the side wall of the furnace shell (11) and is configured as a disc structure that is adapted to the size of the furnace cavity (12). A locking ring (232) with a circular structure is fitted on the side of the furnace door (22) near the furnace cavity (12). A matching ring (234) is installed on the side wall of the furnace shell (11) at the position corresponding to the locking ring (232). A rotary cylinder (231) is connected to the furnace door (22) via a connector (222). A rotating assembly (21) that can drive the furnace door (22) to rotate is connected to the side of the rotary cylinder (231) away from the furnace door (22).

2. A pressure sintering furnace with a side-feeding structure according to claim 1, characterized in that: The outer wall of the locking ring (232) is symmetrically provided with four sets of locking blocks (233). The mating ring (234) is configured as a circular structure with an inner diameter that matches the outer diameter of the locking ring (232). The mating ring (234) is provided with mating grooves (235) that match the shape of the locking blocks (233) at the positions corresponding to the locking blocks (233).

3. A pressure sintering furnace with a side-feeding structure according to claim 1, characterized in that: The support base (32) is configured as an L-shaped structure and a horizontal guide rail (31) is slidably connected to its bottom. The horizontal guide rail (31) is arranged along the length of the furnace body unit (1) and is flush with the bottom of the furnace body unit (1). The lifting assembly (33) includes a lifting frame (331) arranged in a vertical direction, the lifting frame (331) is installed on the top of the support base (32), and a lifting motor (332) is installed on its top.

4. A pressure sintering furnace with a side-feeding structure according to claim 3, characterized in that: The output end of the lifting motor (332) is rotatably connected to a lifting screw (333). The lifting screw (333) is arranged in a vertical direction and a feeding mounting block (41) is sleeved on its outer side wall. The lifting screw (333) and the feeding mounting block (41) mesh with each other.

5. A pressure sintering furnace with a side-feeding structure according to claim 1, characterized in that: The feeding mounting block (41) is rotatably connected to the feeding support plate (42) on the side away from the lifting component (33). The feeding motor (44) is installed at the bottom of the feeding mounting block (41). The feeding motor (44) is rotatably connected to the feeding support plate (42) through the feeding swing rod (43).

6. A pressure sintering furnace with a side-feeding structure according to claim 5, characterized in that: The telescopic conveyor assembly (45) includes a support frame (451) vertically installed on the top of the feeding support plate (42). Two sets of the support frames (451) are symmetrically arranged about the length of the feeding support plate (42), and a conveyor belt (456) is arranged between the two sets of support frames (451).

7. A pressure sintering furnace with a side-feeding structure according to claim 6, characterized in that: Each of the two sets of support frames (451) is provided with a tensioning roller (454) for tensioning the conveyor belt (456) at both ends. A conveyor motor (452) and a drive roller (453) are installed on the side wall of the support frame (451) near the feeding mounting block (41). A winding roller (455) for winding the conveyor belt (456) is installed in the middle of the support frame (451). A telescopic module (457) for telescopic movement is installed on the end of the support frame (451) away from the feeding mounting block (41).

8. A pressure sintering furnace with a side-feeding structure according to claim 7, characterized in that: The telescopic module (457) includes two sets of telescopic mounting plates (4571) arranged along the width direction of the telescopic conveying assembly (45). The bottom of the two sets of telescopic mounting plates (4571) is equipped with telescopic cylinders (4572) and the top is equipped with two sets of telescopic connecting rods (4573). The output end of the telescopic cylinder (4572) is connected to a telescopic crossbar (4574) that is arranged along the width direction of the telescopic conveying assembly (45).

9. A pressure sintering furnace with a side-feeding structure according to claim 1, characterized in that: The flow guide box (55) is configured as a hollow rectangular structure, and a docking ring (551) is provided on the side of the flow guide box (55) near the furnace cavity (12). A flow guide pipe (553) for airflow discharge is provided on the top of the flow guide box (55). A conveying through hole (552) for the telescopic conveying assembly (45) to pass through is provided on the side of the flow guide box (55) away from the furnace cavity (12).

10. A pressure sintering furnace with a side-feeding structure according to claim 9, characterized in that: An adjusting motor (52) is installed inside the flow guide mounting component (51). The adjusting motor (52) is rotatably connected to the lateral support component (54) through the adjusting lever (53). The side wall of the lateral support component (54) away from the flow guide mounting component (51) is connected to the side wall of the flow guide box (55).

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