Rotary vacuum atmosphere furnace

Abstract

The utility model relates to the technical field of atmosphere furnaces, in particular to a rotary vacuum atmosphere furnace which comprises a vacuum atmosphere box, a heat insulation layer, a vacuum pump, an electric heating pipe and a rotating mechanism, and the rotating mechanism comprises a rotating motor, a first bevel gear, a rotating sleeve, a second bevel gear, a transmission assembly, a rotating frame, a rotating disc, a lifting assembly and two connecting assemblies. Before heating, a lifting assembly is started, a rotating frame is made to descend, the rotating frame and a rotating disc are fixed through a connecting assembly, an atmosphere furnace is closed, after vacuum pumping is conducted through a vacuum pump, a rotating motor is started, a first bevel gear starts to rotate, a second bevel gear is driven to rotate, and therefore the rotating frame and the rotating disc are made to rotate through a transmission assembly; and the objective table and the materials on the objective table rotate, so that the problems that the materials cannot be rotated in the heating process in the prior art, the materials are heated and sintered unevenly, and the quality of sintered products is uneven are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of atmosphere furnaces, in particular to a rotary vacuum atmosphere furnace. Background Art

[0002] The vacuum atmosphere furnace is a new type of heat treatment equipment that combines vacuum technology with heat treatment technology. Its core working principle is to perform vacuum sintering in a furnace with a specific gas. After sintering, materials such as metals, ceramics, plastics, and rubber need to be cooled. The existing vacuum atmosphere furnace has a slow cooling speed and low production efficiency.

[0003] The prior art CN212902570U discloses a vacuum atmosphere furnace, comprising a vacuum atmosphere box, a cooling chamber, a heat insulation layer, a stage, a support plate, a vacuum pump, a ventilation pump, a cooling pipe, a cooling box, a cooling plate and an electric heating pipe, wherein two vacuum exhaust ports are arranged on both sides of the heat insulation layer, the cooling chamber is fixedly connected to the top of the vacuum atmosphere box, the heat insulation layer is fixedly connected to the interior of the vacuum atmosphere box, the stage is fixedly connected to the heat insulation layer and is located in the vacuum atmosphere box, the support plate is located on one side of the vacuum atmosphere box, the vacuum pump is fixedly connected above the support plate and is communicated with the two vacuum exhaust ports, the ventilation pump is fixedly connected above the support plate and is communicated with the interior of the cooling chamber through the ventilation pipe and the cooling pipe, and one end of the cooling pipe is located above the vacuum In the atmosphere box, the cooling box is fixedly connected to one side of the vacuum atmosphere box, and is connected to the interior of the cooling bin through the exhaust pipe, and is provided with an exhaust port. The cooling plate is fixedly connected to the cooling box, and the electric heating pipe is fixedly connected to the thermal insulation layer and is located in the vacuum atmosphere box. Before processing, the vacuum pump can be started to vacuum the interior of the vacuum atmosphere box. When cooling the material, the ventilation pump is started, and normal temperature air flows from the ventilation pipe into the cooling pipe and the cooling box, and absorbs the heat in the vacuum atmosphere box through the part of the cooling pipe in the vacuum atmosphere box, and then flows into the cooling box from the exhaust pipe. When flowing through the cooling plate, the heat is absorbed by the cooling plate and finally discharged from the exhaust port, thereby achieving the effect of rapidly cooling the atmosphere furnace and accelerating production efficiency.

[0004] However, the above prior art cannot rotate the material during the heating process, which will cause uneven heating and sintering of the material, resulting in uneven quality of the sintered product. Utility Model Content

[0005] The utility model aims to provide a rotary vacuum atmosphere furnace, which solves the problem that the prior art cannot rotate the material during the heating process, which causes uneven heating and sintering of the material, resulting in uneven quality of the sintered product.

[0006] To achieve the above-mentioned purpose, the utility model provides a rotary vacuum atmosphere furnace, including a vacuum atmosphere box, a thermal insulation layer, a vacuum pump and a rotating mechanism, the rotating mechanism including a rotating motor, a first bevel gear, a rotating sleeve, a second bevel gear, a transmission assembly, a rotating frame, a turntable, a lifting assembly and two connecting assemblies, the thermal insulation layer is fixedly connected to the inner wall of the vacuum atmosphere box and is provided with two vacuum exhaust holes, the vacuum pump is arranged on one side of the vacuum atmosphere box, and the input end is connected to the two vacuum exhaust holes, the electric heating pipe is fixedly connected to the thermal insulation layer and is located at the rear end of the vacuum atmosphere box, the rotating motor is fixedly connected to Above the vacuum atmosphere box, the first bevel gear is fixedly connected to the output end of the rotating motor, the rotating sleeve is fixedly connected to the upper center of the vacuum atmosphere box, the second bevel gear is rotatably connected to the top of the rotating sleeve and meshes with the first bevel gear, the transmission assembly is located in the rotating sleeve, the rotating frame is located below the transmission assembly, the turntable is rotatably connected to the stage and to the vacuum atmosphere box, and is located in the thermal insulation layer, the lifting assembly is arranged on one side of the second bevel gear, the turntable is provided with two connecting grooves, and each connecting assembly is arranged above each connecting groove.

[0007] Among them, the transmission assembly includes a rotating shaft and two sliding bars, the rotating shaft is fixedly connected to the top of the rotating frame and slidably connected to the rotating sleeve, and the upper end is located above the vacuum atmosphere box, the two sliding bars are fixedly connected to the two sides of the rotating shaft and are slidably connected to the second bevel gear, and the lifting assembly is located on one side of the upper end of the rotating shaft.

[0008] Among them, the lifting assembly includes a lifting motor, a lifting gear and a rack sleeve. The lifting motor is fixedly connected to the top of the vacuum atmosphere box, the lifting gear is fixedly connected to the output end of the lifting motor, and the rack sleeve is sleeved outside the rotating shaft and meshes with the lifting gear.

[0009] Wherein, the connecting assembly includes a plug-in block, a connecting frame and an L-shaped bar, the plug-in block is fixedly connected to the rotating frame, and is slidably connected to the turntable and is located in the connecting groove, the connecting frame is fixedly connected to the top of the turntable and is located on one side of the connecting groove, the L-shaped bar is slidably connected to the connecting frame, and is slidably connected to the plug-in block, and passes through the plug-in block and the connecting frame, and the L-shaped bar is provided with a cylindrical part, and the cylindrical part can rotate in the connecting frame.

[0010] Among them, the rotary vacuum atmosphere furnace also includes an auxiliary mechanism, which includes an auxiliary rod frame and two auxiliary roller sleeves. The auxiliary rod frame is fixedly connected to the thermal insulation layer and passes through the turntable and the loading platform. The two auxiliary roller sleeves are fixedly connected to the surface of the auxiliary rod frame.

[0011] The utility model discloses a rotary vacuum atmosphere furnace. Before heating, the lifting component is started to lower the rotating frame, and the rotating frame and the turntable are fixed by the connecting component. The atmosphere furnace is closed, and after the vacuum is extracted by the vacuum pump, the rotating motor is started, and the first bevel gear starts to rotate, driving the second bevel gear to rotate, thereby rotating the rotating frame and the turntable through the transmission component. Driven by the turntable, the loading platform and the materials thereon are rotated, thereby avoiding the problem that the prior art cannot rotate the materials during the heating process, which will cause uneven heating and sintering of the materials and lead to uneven quality of the products after sintering, and the materials are rotated to make the heating more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0014] Figure 2 It is an enlarged view of the connecting component of the first embodiment of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the rotating sleeve of the first embodiment of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the lifting component of the first embodiment of the utility model.

[0017] Figure 5 It is an enlarged view of the connection between the rotating shaft and the rotating frame of the first embodiment of the utility model.

[0018] Figure 6 It is a schematic diagram of the structure inside the heat insulation layer of the first embodiment of the utility model.

[0019] Figure 7 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0020] Figure 8 It is a structural schematic diagram of the auxiliary mechanism of the second embodiment of the utility model.

[0021] 101-vacuum atmosphere box, 102-thermal insulation layer, 103-rotating shaft, 104-vacuum pump, 105-rotating motor, 106-first bevel gear, 107-rotating sleeve, 108-second bevel gear, 109-rotating frame, 110-turntable, 111-lifting motor, 112-lifting gear, 113-rack sleeve, 114-plug-in block, 115-connecting frame, 116-L-shaped bar, 117-sliding bar, 118-electric heating tube, 219-auxiliary rod frame, 220-auxiliary rolling sleeve. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] The first embodiment of the present application is:

[0024] See also Figure 1-Figure 6 ,in Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model; Figure 2 It is an enlarged view of the connection assembly of the first embodiment of the utility model; Figure 3 It is a structural schematic diagram of the rotating sleeve of the first embodiment of the utility model; Figure 4 It is a schematic diagram of the structure inside the heat insulation layer of the first embodiment of the utility model; Figure 5 It is an enlarged view of the connection between the rotating shaft and the rotating frame of the first embodiment of the utility model; Figure 6 It is a schematic diagram of the structure inside the heat insulation layer of the first embodiment of the utility model.

[0025] The utility model provides a rotary vacuum atmosphere furnace: comprising a vacuum atmosphere box 101, a heat insulation layer 102, a vacuum pump 104, an electric heating tube 118 and a rotating mechanism, wherein the rotating mechanism comprises a rotating motor 105, a first bevel gear 106, a rotating sleeve 107, a second bevel gear 108, a transmission component, a rotating frame 109, a turntable 110, a lifting component and two connecting components, wherein the transmission component comprises a sliding bar 117 and a rotating shaft 103, the lifting component comprises a lifting motor 111, a lifting gear 112 and a rack sleeve 113, and the connecting component comprises a plug-in block 114, a connecting frame 115 and an L-shaped bar 116. The above-mentioned scheme solves the problem that the above prior art cannot rotate the material during the heating process, which will cause uneven heating and sintering of the material, resulting in uneven quality of the sintered product.

[0026] For this specific embodiment, the thermal insulation layer 102 is fixedly connected to the inner wall of the vacuum atmosphere box 101, and is provided with two vacuum exhaust holes for heat insulation and heat preservation, and a loading platform is provided inside the thermal insulation layer 102 for placing materials, the vacuum pump 104 is arranged on one side of the vacuum atmosphere box 101, and the input end is connected to the two vacuum exhaust holes for vacuum extraction in the vacuum atmosphere box 101, the electric heating tube 118 is fixedly connected to the thermal insulation layer 102, and is located at the rear end of the vacuum atmosphere box 101, and is used for heating the material.

[0027] The rotating motor 105 is fixedly connected to the top of the vacuum atmosphere box 101, the first bevel gear 106 is fixedly connected to the output end of the rotating motor 105, and is used to drive the second bevel gear 108 to rotate. The rotating sleeve 107 is fixedly connected to the top center of the vacuum atmosphere box 101, and is provided with a rotating ring groove for installing the second bevel gear 108 and the rotating frame 109. The second bevel gear 108 is rotatably connected to the top of the rotating sleeve 107 and meshes with the first bevel gear 106 to drive the rotating frame 109 to rotate. The transmission assembly is located in the rotating sleeve 107, and the rotating frame 109 is located in the transmission assembly. The rotating frame 109 is provided with two connecting grooves, and each connecting assembly is provided above each connecting groove, and is used to fix the rotating frame 109 and the rotating disk 110. When the rotating frame 109 needs to be replaced, the rotating frame 109 and the rotating disk 110 can be separated, and the first bevel gear 106 and the second bevel gear 108 are always meshed. When heating is required, the lifting assembly is started to make the transmission assembly descend in the rotating sleeve 107 and the second bevel gear, and be located above the rotating sleeve 107, still meshing with the first bevel gear 106, driving the rotating frame 109 to descend, and fixing the rotating frame 109 and the turntable 110 through the connecting assembly, closing the atmosphere furnace, and after vacuuming with the vacuum pump 104, starting the rotating motor 105, the first bevel gear 106 starts to rotate, driving the second bevel gear 108 to rotate, thereby rotating the rotating frame 109 and the turntable 110, and driven by the turntable 110, the loading platform and the materials thereon rotate to ensure uniform heating of the materials.

[0028] Secondly, the rotating shaft 103 is detachably connected to the top of the rotating frame 109 by bolts, and is slidably connected to the rotating sleeve 107, and the upper end is located above the vacuum atmosphere box 101, used to drive the rotating frame 109 to slide up and down and rotate horizontally, and can be separated from the rotating frame 109 when the rotating frame 109 needs to be replaced. The two sliding bars 117 are fixedly connected to the two sides of the rotating shaft 103, and are slidably connected to the second bevel gear 108, and the upper end is located above the vacuum atmosphere box 101, used to drive the rotating shaft 103 to rotate and slide up and down, and can limit the rotating shaft 103 and the second bevel gear 108 from rotating relative to each other. The lifting assembly is located on one side of the upper end of the rotating shaft 103, and the second bevel gear 108 is provided with a sliding through hole, and the bottom is provided with a rotating The rotating ring is always located in the rotating ring groove, so that the second bevel gear 108 can rotate relative to the rotating sleeve 107, and does not move up and down with the rotating shaft 103 and the sliding bar 117, and drives the rotating shaft 103 to rotate through the sliding bar 117 during rotation, thereby driving the rotating frame 109 to rotate. When the second bevel gear 108 rotates, under the action of the two sliding bars 117, the rotating shaft 103 rotates with the second bevel gear 108, thereby driving the rotating frame 109 to rotate. When the rotating shaft 103 moves up and down, under the restriction of the two sliding bars 117 and the rotating sleeve 107, the rotating shaft 103 moves up and down along the hole of the second bevel gear 108, thereby driving the rotating frame 109 to move up and down.

[0029] At the same time, the lifting motor 111 is fixedly connected to the top of the vacuum atmosphere box 101, and the lifting gear 112 is fixedly connected to the output end of the lifting motor 111, which is used to drive the rack sleeve 113 to lift and lower. The rack sleeve 113 is slidingly connected to the rotating shaft 103 and meshes with the lifting gear 112 to drive the rotating frame 109 to lift and lower. The rack sleeve 113 includes an arc-shaped toothed plate, a connecting rod and a cylindrical ring. The arc-shaped toothed plate is meshed with the lifting gear 112. The cylindrical ring is sleeved outside the rotating shaft 103. The connecting rod connects the arc-shaped toothed plate and the cylindrical ring. When adjusting the height of the rotating frame 109, the lifting motor 111 is started, and the lifting gear 112 starts to rotate, driving the rack sleeve 113 to lift and lower, thereby driving the rotating shaft 103 and the rotating frame 109 to lift and lower. When the rotating shaft 103 is lifted and lowered, the two sliding bars 117 slide up and down relative to the rotating sleeve 107 and the second bevel gear 108, and under the cooperation restriction of the sliding through hole provided on the second bevel gear 108 and the two sliding bars 117, no rotation movement relative to the second bevel gear 108 is performed, thereby achieving the purpose of adjusting the height of the rotating frame 109 without adjusting its horizontal angle.

[0030] At the same time, the plug-in block 114 is fixedly connected to the rotating frame 109, and is slidably connected to the turntable 110, and is located in the connecting groove, so that the rotating frame 109 can drive the turntable 110 to rotate. The connecting frame 115 is fixedly connected to the top of the turntable 110, and is located on one side of the connecting groove, and is used to install the L-shaped bar 116. The L-shaped bar 116 is slidably connected to the connecting frame 115 and is slidably connected to the plug-in block 114, and passes through the plug-in block 114 and the connecting frame 115. The L-shaped bar 116 is provided with a cylindrical part, and the cylindrical part can be rotated in the connecting frame 115, and is used to fix the plug-in block 114. When connecting the rotating frame 109, the plug-in block 114 can be fixedly connected to the turntable 110. 9 and the turntable 110, start the lifting assembly to insert the plug-in block 114 into the connecting groove, and then pass the L-shaped bar 116 through the plug-in block 114. At this time, the cylindrical part of the L-shaped bar 116 is located in the connecting frame 115, and the L-shaped bar 116 is rotated so that the L-shaped bar 116 cannot slide out of the plug-in block 114, and the fixation is completed. At this time, the turntable 110 and the rotating frame 109 are completely fixed, which can drive the turntable 110 to rotate. When the rotating frame 109 is damaged and needs to be replaced, reverse the above operation, open the bolts connecting the rotating frame 109 and the rotating shaft 103, separate the rotating frame 109 from the rotating shaft 103, and replace it.

[0031] Before heating, start the lifting motor 111, the lifting gear 112 starts to rotate, driving the rack sleeve 113 to descend, and under the action of gravity, driving the rotating shaft 103 to descend, and under the restriction of the two sliding bars 117 and the rotating sleeve 107, the rotating shaft 103 moves downward along the hole of the second bevel gear 108, thereby driving the rotating frame 109 to move downward until the two plug-in blocks 114 are respectively inserted into the two connecting grooves, at which time the L-shaped bar 116 is aligned with the through hole on the plug-in block 114, so that the L-shaped bar 116 passes through the plug-in block 114, and the cylindrical part of the L-shaped bar 116 is located in the connecting frame 115. Rotate the L-shaped bar 116 so that the L-shaped bar 116 cannot slide out of the plug-in block 114, and the fixation is completed. At this time, the turntable 110 and the rotating frame 109 are completely fixed, which can drive the turntable 110 to rotate. If the rotating frame 109 is damaged and needs to be repaired When replacing, the above operation is reversed, and the bolts connecting the rotating frame 109 and the rotating shaft 103 are opened, and the rotating frame 109 is separated from the rotating shaft 103 for replacement. The atmosphere furnace is closed, and after the vacuum is extracted by the vacuum pump 104, the electric heating tube 118 and the rotating motor 105 are started, and the first bevel gear 106 starts to rotate, driving the second bevel gear 108 to rotate. Under the action of the two sliding bars 117, the rotating shaft 103 rotates with the second bevel gear 108, thereby driving the rotating frame 109 and the turntable 110 to rotate. Driven by the turntable 110, the worktable and the material thereon rotate, and at the same time, the electric heating tube 118 sinters the material, thereby avoiding the problem that the prior art cannot rotate the material during the heating process, which will cause uneven heating and sintering of the material, resulting in uneven quality of the sintered product, and the material is rotated to achieve the effect of more uniform heating.

[0032] The second embodiment of the present application is:

[0033] See also Figure 7-Figure 8 ,in Figure 7 It is a schematic diagram of the overall structure of the second embodiment of the utility model; Figure 8 It is a structural schematic diagram of the auxiliary mechanism of the second embodiment of the utility model.

[0034] On the basis of the first embodiment, the rotary vacuum atmosphere box 101 of this embodiment further includes an auxiliary mechanism, which includes an auxiliary rod frame 219 and two auxiliary roller sleeves 220 .

[0035] Among them, the auxiliary rod frame 219 is fixedly connected to the thermal insulation layer 102 and passes through the turntable 110, and is used to drive the two auxiliary roller sleeves 220 to rotate. The two auxiliary roller sleeves 220 are rotatably connected to the surface of the auxiliary rod frame 219, and the surfaces of the two auxiliary roller sleeves 220 are provided with multiple output pipes. When special gas is input, the turntable 110 rotates under the drive of the rotating frame 109, and the material placed above the turntable 110 rotates around the auxiliary rod frame 219. When contacting the two auxiliary roller sleeves 220, the two auxiliary roller sleeves 220 roll relative to the auxiliary rod frame 219, and the multiple output pipes on the surface of the auxiliary roller sleeve 220 intercept and stir the material, so that the mixing of the input special gas and the material is more uniform and rapid, and the sintering of the material is more sufficient, thereby achieving the effect of uniformly mixing the special gas and the material and accelerating the sintering of the material.

[0036] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A rotary vacuum atmosphere furnace, comprising a vacuum atmosphere box, a heat insulation layer, a vacuum pump and an electric heating tube, wherein the heat insulation layer is fixedly connected to the inner wall of the vacuum atmosphere box and is provided with two vacuum exhaust holes, and a stage is provided inside, the vacuum pump is arranged on one side of the vacuum atmosphere box, and the input end is connected to the two vacuum exhaust holes, the electric heating tube is fixedly connected to the heat insulation layer and is located at the rear end of the vacuum atmosphere box, characterized in that: Also includes a rotating mechanism; The rotating mechanism includes a rotating motor, a first bevel gear, a rotating sleeve, a second bevel gear, a transmission assembly, a rotating frame, a turntable, a lifting assembly and two connecting assemblies. The rotating motor is fixedly connected to the top of the vacuum atmosphere box, the first bevel gear is fixedly connected to the output end of the rotating motor, the rotating sleeve is fixedly connected to the top center of the vacuum atmosphere box, the second bevel gear is rotatably connected to the top of the rotating sleeve and meshes with the first bevel gear, the transmission assembly is located in the rotating sleeve, the rotating frame is located below the transmission assembly, the turntable is rotatably connected to the stage, and is rotatably connected to the vacuum atmosphere box, and is located in the thermal insulation layer, the lifting assembly is arranged on one side of the second bevel gear, the turntable is provided with two connecting grooves, and each connecting assembly is arranged above each connecting groove.

2. The rotary vacuum atmosphere furnace according to claim 1, characterized in that: The transmission assembly includes a rotating shaft and two sliding bars. The rotating shaft is detachably connected to the top of the rotating frame by bolts, and is slidably connected to the rotating sleeve, and the upper end is located above the vacuum atmosphere box. The two sliding bars are fixedly connected to both sides of the rotating shaft and are slidably connected to the second bevel gear.

3. The rotary vacuum atmosphere furnace according to claim 2, characterized in that: The lifting assembly includes a lifting motor, a lifting gear and a rack sleeve. The lifting motor is fixedly connected to the top of the vacuum atmosphere box, the lifting gear is fixedly connected to the output end of the lifting motor, and the rack sleeve is sleeved outside the rotating shaft and meshes with the lifting gear.

4. The rotary vacuum atmosphere furnace according to claim 1, characterized in that: The connecting assembly includes a plug-in block, a connecting frame and an L-shaped bar. The plug-in block is fixedly connected to the rotating frame and is slidably connected to the turntable and is located in the connecting groove. The connecting frame is fixedly connected to the top of the turntable and is located on one side of the connecting groove. The L-shaped bar is slidably connected to the connecting frame and is slidably connected to the plug-in block and passes through the plug-in block and the connecting frame. The L-shaped bar is provided with a cylindrical portion, and the cylindrical portion can rotate in the connecting frame.

5. The rotary vacuum atmosphere furnace according to claim 1, characterized in that: The rotary vacuum atmosphere furnace also includes an auxiliary mechanism, which includes an auxiliary rod frame and two auxiliary roller sleeves. The auxiliary rod frame is fixedly connected to the thermal insulation layer and passes through the turntable and the loading platform. The two auxiliary roller sleeves are rotatably connected to the surface of the auxiliary rod frame.

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