Copper powder sintering diffusion furnace

Abstract

The utility model relates to the field of copper powder sintering production, in particular to a copper powder sintering diffusion furnace which comprises a push plate furnace and further comprises an inlet replacement chamber, the inlet replacement chamber is arranged at the feeding end of the push plate furnace and comprises a replacement chamber A, and the replacement chamber A is provided with a feeding gate A and a discharging gate A; the discharging gate is communicated with the feeding end of the push plate furnace in a sealed mode, a through hole A is formed in the discharging gate A, the push plate furnace and the replacement chamber A are communicated through the through hole A, an exhaust pipe is arranged on the replacement chamber A, and a feeding device B is arranged in the replacement chamber A and used for feeding materials into the push plate furnace from the replacement chamber A; and the outlet replacement chamber is arranged at the discharge end of the push plate furnace. According to the copper powder sintering diffusion furnace, the inlet replacement chamber and the outlet replacement chamber are arranged, so that overflow of protective gas in the diffusion furnace is reduced, and the heat utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of copper powder sintering production, and particularly relates to a copper powder sintering diffusion furnace. Background Art

[0002] The copper powder sintering process is to place copper powder in a mold with a specific shape, and then place it together with the mold in a high-temperature sintering furnace filled with a protective gas, so that the copper powder particles are fused into an irreversible block. This process has been widely used in the fields of heat pipe manufacturing, VC heat pipe manufacturing, etc.

[0003] The high consumption of a large amount of protective gas and high energy consumption in copper powder sintering have always troubled production enterprises. The main reason is the use of an old-fashioned tunnel kiln without a gate. To prevent product oxidation problems, the current existing processing method is to use a large amount of protective gases (such as nitrogen, nitrogen-hydrogen mixture) to isolate copper powder from air. The processing technology is rough and the loss is relatively large.

[0004] It is necessary to provide a copper powder sintering diffusion furnace that can effectively overcome the above problems and reduce energy consumption. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a copper powder sintering diffusion furnace, by setting an inlet replacement chamber and an outlet replacement chamber, thereby reducing the spillage of the protective gas in the diffusion furnace and improving the heat utilization rate.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A copper powder sintering diffusion furnace, including a pusher furnace, further includes,

[0008] An inlet replacement chamber, which is arranged at the feeding end of the pusher furnace. The inlet replacement chamber includes a replacement chamber A. The replacement chamber A is provided with a feeding gate A and a discharging gate A. The discharging gate is hermetically connected to the feeding end of the pusher furnace. A through hole A is arranged on the discharging gate A, and the through hole A connects the pusher furnace and the replacement chamber A. A exhaust pipe is arranged on the replacement chamber A, and a feeding device B is arranged in the replacement chamber A for feeding materials from the replacement chamber A into the pusher furnace;

[0009] An outlet replacement chamber, which is arranged at the discharging end of the pusher furnace. The outlet replacement chamber includes a replacement chamber B. The replacement chamber B is provided with a feeding gate B and a discharging gate B. The feeding gate B is hermetically connected to the discharging end of the pusher furnace. A material transfer device A is arranged at the discharging end of the pusher furnace for pushing materials into the replacement chamber B. A through hole B is arranged on the feeding gate B to connect the pusher furnace and the replacement chamber B. A exhaust pipe B is arranged on the replacement chamber B.

[0010] Further, a feeding device A is arranged outside the feeding gate A for feeding materials from the outside into the replacement chamber A. The feeding device A includes a chain conveyor table A, and a material pushing device A is arranged inside the chain conveyor table A. The material pushing device A includes a lifting cylinder A and a horizontal cylinder A. The lifting cylinder A is fixedly connected inside the chain conveyor table A, the horizontal cylinder A is fixedly connected to the end of the guide rod of the lifting cylinder A, and a pushing block A is fixedly connected to the end of the guide rod of the horizontal cylinder A. The horizontal cylinder A is arranged below the conveying surface of the chain conveyor table A. When the guide rod of the lifting cylinder A extends in place, the horizontal cylinder A can push the materials on the chain conveyor table A into the replacement chamber A.

[0011] Further, the feeding device B includes a hydraulic cylinder. The hydraulic cylinder is fixedly connected to the outside of the replacement chamber A, its guide rod is inserted into the replacement chamber A, and a pushing plate A is fixedly connected to the end.

[0012] Further, the discharge gate A includes a door frame, an upper flange plate is installed on the door frame, a lifting cylinder is installed on the flange plate, the guide rod of the lifting cylinder is fixedly connected to the lifting frame, both sides of the lifting frame are rotatably connected to a gate plate through a rotating plate, and guiding bearings are respectively arranged on the lifting frame and the gate plate. The feeding gate A, the discharge gate A, the feeding gate B, and the discharge gate B adopt the same structure.

[0013] Further, a guiding rod is also fixedly connected to the lifting frame. The lower end of the guiding rod is fixedly connected to the gate plate, and the upper end passes through the flange plate.

[0014] Further, a material pushing device B for pushing materials from the outlet replacement chamber to the outside is arranged inside the replacement chamber B. The material pushing device B includes a bottom plate, a sliding rail is arranged on the bottom plate, a bearing platform is fixedly connected above the sliding rail, a rotating cavity is arranged inside the bearing platform, a screw rod is rotatably connected inside the rotating cavity, one end of the screw rod passes through a fixed plate and is fixedly connected to a pulley, a sliding block is movably connected to the sliding rail, a pushing plate is fixedly connected to the sliding block, and the sliding block is threadedly connected to the screw rod. By driving the pulley through a driving motor to make the screw rod rotate, the pushing plate is made to push the materials to transfer. The structure of the material transferring device A is the same as that of the material pushing device B.

[0015] Further, a connecting channel is arranged between the inlet replacement chamber and the pusher furnace. A guiding track is arranged inside the connecting channel, and a cooling water pipe is arranged outside the connecting channel.

[0016] Further, oxygen analyzers are installed inside both the inlet replacement chamber and the outlet replacement chamber.

[0017] Further, observation windows are arranged on both the inlet replacement chamber and the outlet replacement chamber.

[0018] Further, a transfer table is arranged between the inlet of the inlet replacement chamber and the outlet of the outlet replacement chamber.

[0019] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0020] By respectively arranging a discharge gate A and a feed gate B at the inlet and outlet of the pusher furnace, the sealing performance of the pusher furnace is improved. The protective gas overflowing from its sintering chamber is respectively introduced into the inlet replacement chamber and the outlet replacement chamber, reducing gas waste. At the same time, when the gas in the pusher furnace returns to the inlet replacement chamber, it heats the carrier plate in the inlet replacement chamber, reusing the heat energy and reducing the power consumption. In order to effectively control the temperature of the recycled heating gas in the inlet replacement chamber, a cooling water pipe is arranged in the connection channel to reduce the temperature of the recycled gas to a suitable temperature through the cooling water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of this patent.

[0022] Figure 2 Schematic diagram of the structure of the inlet replacement chamber.

[0023] Figure 3 Top view structure diagram of the inlet replacement chamber.

[0024] Figure 4 Top view perspective structure diagram of the inlet replacement chamber.

[0025] Figure 5 Schematic diagram of the structure of the pusher device A.

[0026] Figure 6 Schematic diagram of the structure of the feeding device A.

[0027] Figure 7 Schematic diagram of the structure of the inlet replacement chamber from another angle.

[0028] Figure 8 Schematic diagram of the structure of the discharge gate A.

[0029] Figure 9 Schematic diagram of the structure at the door frame.

[0030] Figure 10 Schematic diagram of the structure of the outlet replacement chamber.

[0031] Figure 11 Schematic diagram of the structure of the pusher device B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The objectives, advantages and features of the present utility model will be illustrated and explained through the non-restrictive description of the following preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of the present invention, and any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the scope of protection required by the present invention.

[0033] In the description of the solution, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] As Figures 1 to 11 shown, a copper powder sintering and diffusion furnace includes a pusher furnace 10, and further includes

[0035] an inlet replacement chamber 20, the inlet replacement chamber 20 is arranged at the feeding end of the pusher furnace 10, the inlet replacement chamber 20 includes a replacement chamber A201, the replacement chamber A201 is provided with a feeding gate A202 and a discharging gate A203, the discharging gate A203 is hermetically connected to the feeding end of the pusher furnace 10, a through hole A2034 is arranged on the discharging gate A203, the through hole A2034 connects the pusher furnace 10 and the replacement chamber A201, an exhaust pipe 205 is arranged on the replacement chamber A201, and a feeding device B206 is arranged in the replacement chamber A201 for feeding materials from the replacement chamber A201 into the pusher furnace 10;

[0036] an outlet replacement chamber 30, the outlet replacement chamber 30 is arranged at the discharging end of the pusher furnace 10, the outlet replacement chamber 30 includes a replacement chamber B301, the replacement chamber B301 is provided with a feeding gate B302 and a discharging gate B303, the feeding gate B302 is hermetically connected to the discharging end of the pusher furnace 10, a material transfer device A101 is arranged at the discharging end of the pusher furnace 10 for pushing materials into the replacement chamber B301, a through hole B3021 is arranged on the feeding gate B302 to connect the pusher furnace 10 and the replacement chamber B301, and an exhaust pipe B304 is arranged on the replacement chamber B301.

[0037] Specifically, in this patent, by setting an inlet replacement chamber 20 and an outlet replacement chamber 30, and by providing an air vent hole A2034 and a through hole B3021 in the discharge gate A203 and the feed gate B302 respectively, the protective gas in the pusher furnace 10 replaces the air that enters the replacement chamber A201 and the replacement chamber B301 during feeding or discharging, reducing the waste of the protective gas.

[0038] Furthermore, a feeding device A2021 is provided outside the feed gate A202 for feeding materials from the outside into the replacement chamber A201. The feeding device A2021 includes a chain conveyor table A20211. A pushing device A20212 is arranged inside the chain conveyor table A20211. The pushing device A20212 includes a lifting cylinder A202121 and a horizontal cylinder A202122. The lifting cylinder A202121 is fixedly connected inside the chain conveyor table A20211. The horizontal cylinder A202122 is fixedly connected to the end of the guide rod of the lifting cylinder A202121. A push block A202123 is fixedly connected to the end of the guide rod of the horizontal cylinder A202122. The horizontal cylinder A202122 is arranged below the conveying surface of the chain conveyor table A20211. When the guide rod of the lifting cylinder A202121 extends in place, the horizontal cylinder A202122 can push the materials on the chain conveyor table A20211 into the replacement chamber A201.

[0039] Specifically, during use, the carrier plate is first transported inside the chain conveyor table A20211. After being transported in place, the lifting cylinder A202121 lifts the horizontal cylinder A202122, and the guide rod of the horizontal cylinder A202122 drives the push block A202123 to push the carrier plate into the replacement chamber A201 to complete the feeding. At the same time, in order to facilitate position detection, a proximity switch (not shown in this patent, which is a conventional technical means in the art and will not be described in detail) can be set.

[0040] Furthermore, the feeding device B206 includes a hydraulic cylinder. The hydraulic cylinder is fixedly connected to the outside of the replacement chamber A201, and its guide rod is inserted into the replacement chamber A201, and a push plate A is fixedly connected to the end. Specifically, after the gas replacement in the replacement chamber A201 is completed, the discharge gate A203 is opened, and the guide rod of the hydraulic cylinder pushes the carrier plate into the pusher furnace 10 for heating.

[0041] Furthermore, the discharge gate A203 includes a door frame 2031, an upper flange plate 2032 is installed on the door frame 2031, a lifting cylinder 2033 is installed on the flange plate 2032, the guide rod of the lifting cylinder 2033 is fixedly connected to the lifting frame 20331, and the two sides of the lifting frame 20331 are rotatably connected to the gate plate 20333 through the rotating plate 20332, and the lifting frame 20331 and the gate plate 20333 are respectively provided with guide bearings 20334, and the feed gate A202, the discharge gate A203, the feed gate B302, and the discharge gate B303 adopt the same structure.

[0042] Specifically, when the gate is opened, the guide rod of the lifting cylinder 2033 retracts upward, and the lifting frame 20331 moves upward along the door frame 2031, causing the gate plate 20333 to move upward, thereby opening the gate; when the gate is closed, the guide rod of the lifting cylinder 2033 extends and moves downward, and the lifting frame 20331 moves downward along the door frame 2031. Since the gate plate 20333 is rotatably connected to the lifting frame 20331 through the rotating plate 20332, after the lifting frame 20331 moves into place, the gate plate 20333 can be squeezed by the rotating plate 20332, so that the gate plate 20333 can better squeeze the door frame 2031 to form a better seal (a sealing pad can be set on the gate plate for better sealing effect).

[0043] Furthermore, in order to better guide and ensure the movement stability of the lifting frame 20331, a guide rod 203311 is fixedly connected to the lifting frame 20331, and the lower end of the guide rod 203311 is fixedly connected to the gate plate 20333, and the upper end is connected to the flange plate 2032.

[0044] Furthermore, a pushing device B306 for pushing materials from the outlet displacement chamber 30 to the outside is provided in the displacement chamber B301, and the pushing device B306 includes a bottom plate 3061, a slide rail is provided on the bottom plate 3061, a support platform 3062 is fixedly connected above the slide rail, a rotating chamber is provided inside the support platform 3062, a screw 3064 is rotatably connected in the rotating chamber, one end of the screw 3064 is passed through the fixed plate 3063 and then fixedly connected to the pulley 3067, a slider 30651 is movably connected to the slide rail, a push plate 3065 is fixedly connected to the slider 30651, the slider 30651 is threadedly connected to the screw 3064, and the screw 3064 is rotated after being connected to the pulley 3067 through a driving motor, so that the push plate 3065 pushes the material transfer, and the structure of the material transfer device A101 is the same as that of the pushing device B306.

[0045] Further, in order to control the preheating temperature of the material and recycle the excess heat at the same time, a connection channel 102 is provided between the inlet replacement chamber 20 and the pusher furnace 10. A guiding track is arranged in the connection channel 102, which facilitates the introduction of the material into the pusher furnace 10. A cooling water pipe 1021 is arranged outside the connection channel 102, which can effectively control the preheating temperature of the material while recycling the heat.

[0046] Further, in order to effectively detect the oxygen concentration in the inlet replacement chamber 20 and the outlet replacement chamber 30, oxygen analyzers are installed in both replacement chambers.

[0047] Further, in order to better observe the condition of the material, observation windows are provided on both the inlet replacement chamber 20 and the outlet replacement chamber 30.

[0048] At the same time, in order to better achieve the continuity of production, a transfer table 40 is provided between the inlet of the inlet replacement chamber 20 and the outlet of the outlet replacement chamber 30. The produced material can be sent out from the outlet replacement chamber 30, and the material to be produced can be manually placed on the transfer table 40 and sent into the inlet replacement chamber 20 to start production.

[0049] The specific working process is as follows: The staff places the tray carrying the material on the transfer table 40. The transfer table 40 passes the tray material through the feed gate A202 and enters the inlet replacement chamber 20, and then the feed gate A202 indicates that the tray feeding is completed.

[0050] Since through holes A2034 are provided on the door panel of the discharge gate A203, the protective nitrogen in the pusher furnace 10 enters the inlet replacement chamber 20 through the ventilation holes A2031, increasing the pressure in the inlet replacement chamber 20. The oxygen mixed in the inlet replacement chamber 20 during feeding flows out through the nitrogen flowing in through the ventilation holes A2031 and is discharged from the exhaust pipe 205 above the inlet replacement chamber 20. Through the set replacement time, the replacement time can be coordinated with the oxygen analyzer and determined by observing the changes in the replacement time and the oxygen content. When the replacement time reaches, the oxygen in the replacement chamber is discharged to the set value. At the same time, the hot gas flowing out of the furnace through the ventilation holes A2031 during gas replacement preheats the tray in the inlet replacement chamber, increasing the starting temperature of the tray entering the furnace. When the replacement time reaches the set value, the discharge gate A203 is opened, and the feeding device B206 pushes the tray into the pusher furnace 10, and the discharge gate A203 is closed to wait for the start of the next round of feeding;

[0051] The material is heated in the pusher furnace 10. After the material is heated, it moves in the pusher furnace 10 until it reaches the discharge end of the pusher furnace 10. Then, the feed gate B302 is opened, and under the action of the material transfer device A101, the carrier plate is pushed into the replacement chamber B301 of the outlet replacement chamber 30. Next, the feed gate B302 is closed, and the discharge gate B303 is opened. The pusher device B306 pushes the carrier plate out of the replacement chamber B301 onto the transfer table 40. Then, the discharge gate B303 is closed. The protective gas in the pusher furnace 10 replaces the air in the replacement chamber B301 due to the opening of the discharge gate B303 through the through-hole B3021, reducing the influence of air on the inside of the pusher furnace 10, and thus continuously performing cyclic operations.

[0052] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper powder sintering and diffusion furnace, comprising a pusher furnace (10), characterized in that, It further includes an inlet replacement chamber (20) provided at the feeding end of the pusher furnace (10). The inlet replacement chamber (20) includes a replacement chamber A (201). The replacement chamber A (201) is provided with a feeding gate A (202) and a discharging gate A (203). The discharging gate A (203) is hermetically connected to the feeding end of the pusher furnace (10). A through hole A (2034) is provided on the discharging gate A (203), and the through hole A (2034) connects the pusher furnace (10) and the replacement chamber A (201). An exhaust pipe (205) is provided on the replacement chamber A (201). A feeding device B (206) is provided in the replacement chamber A (201) for feeding materials from the replacement chamber A (201) into the pusher furnace (10). an outlet replacement chamber (30) provided at the discharging end of the pusher furnace (10). The outlet replacement chamber (30) includes a replacement chamber B (301). The replacement chamber B (301) is provided with a feeding gate B (302) and a discharging gate B (303). The feeding gate B (302) is hermetically connected to the discharging end of the pusher furnace (10). A material transfer device A (101) is provided at the discharging end of the pusher furnace (10) for pushing materials into the replacement chamber B (301). A through hole B (3021) is provided on the feeding gate B (302) to connect the pusher furnace (10) and the replacement chamber B (301). An exhaust pipe B (304) is provided on the replacement chamber B (301).

2. The copper powder sintering and diffusion furnace according to claim 1, characterized in that, A feeding device A (2021) is provided outside the feeding gate A (202) for feeding materials from the outside into the replacement chamber A (201). The feeding device A (2021) includes a chain conveyor table A (20211). A material pushing device A (20212) is provided in the chain conveyor table A (20211). The material pushing device A (20212) includes a lifting cylinder A (202121) and a horizontal cylinder A (202122). The lifting cylinder A (202121) is fixedly connected inside the chain conveyor table A (20211). The horizontal cylinder A (202122) is fixedly connected to the end of the guide rod of the lifting cylinder A (202121). A push block A (202123) is fixedly connected to the end of the guide rod of the horizontal cylinder A (202122). The horizontal cylinder A (202122) is arranged below the conveying surface of the chain conveyor table A (20211). When the guide rod of the lifting cylinder A (202121) extends in place, the horizontal cylinder A (202122) can push the materials on the chain conveyor table A (20211) into the replacement chamber A (201).

3. A copper powder sintering and diffusion furnace according to claim 1, characterized in that, The feeding device B (206) includes a hydraulic cylinder fixedly connected outside the replacement chamber A (201). Its guide rod is inserted into the replacement chamber A (201), and a push plate A is fixedly connected to the end.

4. A copper powder sintering and diffusion furnace according to claim 1, characterized in that, The discharge gate A (203) includes a door frame (2031). An upper flange plate (2032) is installed on the door frame (2031). A lifting cylinder (2033) is installed on the flange plate (2032). The guide rod of the lifting cylinder (2033) is fixedly connected to a lifting frame (20331). Both side edges of the lifting frame (20331) are rotatably connected to a gate plate (20333) through rotating plates (20332). Guide bearings (20334) are respectively arranged on the lifting frame (20331) and the gate plate (20333). The feed gate A (202), the discharge gate A (203), the feed gate B (302), and the discharge gate B (303) adopt the same structure.

5. A copper powder sintering and diffusion furnace according to claim 4, wherein, A guide rod (203311) is also fixedly connected to the lifting frame (20331). The lower end of the guide rod (203311) is fixedly connected to the gate plate (20333), and the upper end passes through the flange plate (2032).

6. The copper powder sintering and diffusion furnace according to claim 1, characterized in that, A pushing device B (306) for pushing materials from the outlet replacement chamber (30) to the outside is arranged in the replacement chamber B (301). The pushing device B (306) includes a bottom plate (3061). A slide rail is arranged on the bottom plate (3061). A carrier table (3062) is fixedly connected above the slide rail. A rotating cavity is arranged inside the carrier table (3062). A screw rod (3064) is rotatably connected in the rotating cavity. One end of the screw rod (3064) passes through a fixing plate (3063) and is fixedly connected to a pulley (3067). A slider (30651) is movably connected to the slide rail. A pushing plate (3065) is fixedly connected to the slider (30651). The slider (30651) is threadedly connected to the screw rod (3064). By driving the pulley (3067) through a driving motor to make the screw rod (3064) rotate, the pushing plate (3065) is made to push the materials to be transferred. The structure of the material transfer device A (101) is the same as that of the pushing device B (306).

7. A copper powder sintering and diffusion furnace according to claim 1, characterized in that A connecting channel (102) is arranged between the inlet replacement chamber (20) and the pusher furnace (10). A guide track is arranged in the connecting channel (102). A cooling water pipe (1021) is arranged outside the connecting channel (102).

8. A copper powder sintering and diffusion furnace according to claim 1, characterized in that, Oxygen analyzers are installed in both the inlet replacement chamber (20) and the outlet replacement chamber (30).

9. A copper powder sintering and diffusion furnace according to claim 1, characterized in that, Observation windows are arranged on both the inlet replacement chamber (20) and the outlet replacement chamber (30).

10. The copper powder sintering and diffusion furnace according to claim 1, characterized in that, A transfer table (40) is arranged between the inlet of the inlet replacement chamber (20) and the outlet of the outlet replacement chamber (30).

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