A vacuum heat treatment furnace

Abstract

The present application relates to a vacuum heat treatment furnace, and relates to the field of heat treatment furnaces, which includes a furnace body with a heating chamber, a heating component, and a material placement component, wherein the heating chamber is cylindrical with a first central axis; the heating component is connected to the furnace body to provide heat to the furnace body; the material placement component includes: a cylindrical support with a second central axis, the cylindrical support is located in the heating chamber, and the first central axis coincides with the second central axis, a rotation gap is gradually formed between the outer circumferential wall of the cylindrical support and the inner circumferential wall of the furnace body, and the rotation gap is less than 2mm, and the cylindrical support is connected to the furnace body by rotation around the second central axis; a plurality of accommodating grooves are provided on the outer circumferential wall of the cylindrical support, and a plurality of accommodating grooves are distributed in a matrix on the unfolded surface of the cylindrical support; a feed groove connected to the heating chamber is provided through the furnace wall of the furnace body, and the length direction of the feed groove is parallel to the second central axis. The present application has the effect of uniformly heating the product to be processed.

Description

Technical Field

[0001] The present application relates to the field of heat treatment furnaces, and in particular to a vacuum heat treatment furnace. Background Art

[0002] Vacuum heat treatment furnaces are widely used in the heat treatment process of metal materials, especially in the fields of aviation and aerospace, where the demand for heat treatment of small parts such as nuts and bolts is particularly prominent; Traditional heat treatment furnaces are usually well-type, with heating devices installed on the furnace wall. During the operation, the nuts, bolts and other parts to be processed are stacked in the heat treatment furnace for heating. However, this method will cause uneven heating of the bolts. For this reason, some furnaces are also equipped with a placement rack, on which nuts, bolts and other parts are placed. Regarding the above-mentioned related technologies, since the heat in the furnace body is not uniform, even if the nuts and bolts to be processed are placed on the placement rack, parts in different positions will still be heated unevenly. Therefore, providing a heat treatment furnace that can heat the products to be processed evenly is an urgent problem to be solved. Summary of the invention

[0003] In order to evenly heat the product to be processed, the present application provides a vacuum heat treatment furnace.

[0004] The vacuum heat treatment furnace provided in this application adopts the following technical solution: A vacuum heat treatment furnace, comprising: a furnace body having a heating chamber, the heating chamber being cylindrical with a first central axis; a heating component connected to the furnace body to provide heat to the furnace body; and A material placing component, the material placing component comprising: A cylindrical support having a second central axis, the cylindrical support being located in the heating chamber, the first central axis coinciding with the second central axis, a rotation gap gradually formed between the outer peripheral wall of the cylindrical support and the inner peripheral wall of the furnace body, the rotation gap being less than 2 mm, and the cylindrical support being rotatably connected to the furnace body around the second central axis; The outer peripheral wall of the cylindrical support is provided with a plurality of accommodating grooves, and the plurality of accommodating grooves are distributed in a matrix on the unfolded surface of the cylindrical support; A feed trough communicating with the heating chamber is formed through the furnace wall of the furnace body, and the length direction of the feed trough is parallel to the second central axis; The receiving groove can rotate with the cylindrical support until it is connected with the feeding groove; The furnace body is provided with a sealing plate at the receiving groove for closing the receiving groove.

[0005] By adopting the above technical scheme, uniform heating of the products to be processed during the vacuum heat treatment process is achieved; specifically, the cylindrical support rotates around the second central axis, so that the products to be processed in the accommodating groove can be evenly distributed in the furnace body as the cylindrical support rotates, so that the products to be processed can be rotated to different positions in the furnace body, thereby effectively avoiding the problem of uneven heating caused by uneven heat in the furnace body in traditional heat treatment furnaces; in addition, a feed trough is opened through the furnace wall of the furnace body, so that the products to be processed can easily enter the interior of the furnace body through the feed trough, and at the same time, the design of the sealing plate can effectively seal the feed trough to ensure the vacuum environment in the furnace body.

[0006] Optionally, a support assembly is further included, wherein the receiving groove penetrates through the cylinder wall of the cylinder support, and each of the receiving grooves is provided with a corresponding support assembly, and the support assembly includes: A support net is located in the receiving groove and at one end of the receiving groove close to the second central axis, so that the receiving groove and the inner cavity of the cylindrical support are separated by the support net; the support net is connected to the cylindrical support.

[0007] By adopting the above technical solution and providing a support net, it is possible to facilitate the airflow to flow in the cylindrical support member, so that the product to be processed can contact the airflow more evenly.

[0008] Optionally, the support assembly further includes: An elastic member is connected between the support net and the cylindrical support member, and the elastic expansion and contraction direction of the elastic member is parallel to the mesh surface of the support net.

[0009] By adopting the above-mentioned technical solution, the support net can elastically expand and contract in a direction parallel to the net surface of the support net under the action of the elastic member, so that the product to be processed placed on the support net can sway with the swaying of the support net, which helps the product to be processed to be heated more evenly during the heating process, reduces local overheating or insufficient heating, and improves the quality and efficiency of heat treatment.

[0010] Optionally, a material shifting assembly is also included, and the material shifting assembly includes: A center rod, the center rod is coaxially fixedly connected to the furnace body; A material stripping strip, the material stripping strip is parallel to the second central axis, the material stripping strip has a material stripping surface on the wall surface away from the second central axis, and the material stripping surface is in an arc shape with an opening toward one side of the second central axis; A connecting rod, one end of which is fixedly connected to the material-selecting strip, and the other end of which is fixedly connected to the central rod; and A material-moving rod, which is an elastic telescopic rod, one end of which is fixedly connected to the support net, and the other end of which is a material-moving end and extends toward the second central axis; When the material-moving rod rotates with the cylindrical support column, the material-moving rod can change its length under the push of the material-moving strip, and the material-moving end of the material-moving rod can intermittently contact the material-moving surface; The elastic expansion and contraction direction of the elastic member is perpendicular to the second central axis.

[0011] By adopting the above technical scheme, the material shifting assembly can effectively cause the products to be processed on the support net to shake, so that the products to be processed are heated more evenly during the heating process; the material shifting rod contacts and is pushed by the material shifting bar during the rotation of the cylindrical support, thereby changing its length. The material shifting end of the material shifting rod is in intermittent contact with the material shifting surface of the material shifting bar, and the generated vibration is transmitted to the support net, causing the products to be processed on the support net to shake continuously, avoiding the problem of insufficient heating in some areas due to stillness.

[0012] Optionally, the material moving end of the material moving rod is a round head.

[0013] By adopting the above technical solution, the occurrence of jamming of the material moving rod can be reduced.

[0014] Optionally, a feeding assembly is also included, and the feeding assembly includes: A feeding bar, the feeding bar is arranged parallel to the first central axis, the feeding bar is connected to the peripheral wall of the furnace body by sliding around the circumference of a virtual circle, the virtual circle is coaxial with the cylindrical support, and the feeding bar is in contact with the peripheral wall of the furnace body; The feed bar is provided with a plurality of feed holes, and the plurality of feed holes are arranged at intervals along the length direction of the feed bar; The feeding bar can rotate along the furnace body to a discharging posture. When the feeding bar is in the discharging posture, the feeding hole and the containing groove are correspondingly connected through the feeding groove in the radial direction of the virtual circle.

[0015] By adopting the above technical solution, the feeding bar can be rotated along the furnace body to a discharging posture, so that the products to be processed in the feeding hole are put into the containing groove. This design improves the feeding efficiency.

[0016] Optionally, the feeding assembly further includes: A rotating rod, the rotating rod is rotatably connected to the furnace body around a first central axis, one end of the rotating rod is fixedly connected to the feeding bar, and the other end is rotatably connected to the furnace body; and A first motor is connected between the rotating rod and the furnace body to drive the rotating rod to rotate along the furnace body.

[0017] By adopting the above technical solution, the rotating rod is connected to the furnace body by rotating around the first central axis, so that the feeding bar can rotate around the outer wall of the furnace body, thereby realizing the switching of the feeding bar between the loading posture and the unloading posture; the use of the first motor further improves the automation degree of the feeding assembly, ensures the stability and accuracy of the feeding process, thereby improving production efficiency and product quality.

[0018] Optionally, two feeding assemblies are provided, and in the virtual circumferential direction, one feeding bar is provided on each side of the feed trough.

[0019] By adopting the above technical solution, the double feeding bar design enables two batches of materials to be processed alternately in each feeding operation, thereby improving the feeding efficiency.

[0020] Optionally, a vacuum pump is provided on the furnace body.

[0021] By adopting the above technical solution, a vacuum environment can be achieved inside the furnace during the heat treatment process, effectively preventing oxygen in the air from oxidizing the metal material, ensuring the purity of the heat treatment process, and improving the performance of the material after heat treatment.

[0022] Optionally, the furnace wall of the furnace body is hollow, and the heating assembly includes: The heating wire is located in the furnace wall of the furnace body and is fixedly connected to the furnace wall of the furnace body.

[0023] By adopting the above technical solution, the furnace wall of the furnace body is hollow, so that the heating wire in the heating component can be placed inside the furnace wall, thereby achieving uniform distribution of heat.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: The products to be processed in the receiving tank can be evenly distributed in the furnace body as the cylindrical support rotates, so that the products to be processed can be rotated to different positions in the furnace body, thereby effectively avoiding the problem of uneven heating caused by uneven heat in the furnace body in traditional heat treatment furnaces; By providing a support net, it is possible to facilitate the airflow to flow in the cylindrical support member, so that the product to be processed can contact the airflow more evenly; By arranging elastic parts to make the support net shake, it is helpful for the products to be processed to be heated more evenly during the heating process, reduce the phenomenon of local overheating or insufficient heating, and improve the quality and efficiency of heat treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a structural schematic diagram of the material placement assembly in an embodiment of the present application; Figure 3It is a structural schematic diagram of the feeding assembly in the embodiment of the present application; Figure 4 It is a structural schematic diagram of the rotation gap in the embodiment of the present application; Figure 5 It is a structural schematic diagram of the material shifting assembly in an embodiment of the present application; Figure 6 yes Figure 5 Enlarged view of part A.

[0026] Explanation of the reference numerals: 1. furnace body; 11. heating chamber; 111. rotating gap; 12. frame; 13. feed trough; 14. mounting seat; 15. avoidance gap; 2. heating assembly; 21. heating wire; 3. sealing plate; 31. sealing strip; 32. linear drive member; 4. vacuum pump; 5. feeding assembly; 51. feeding strip; 511. feeding hole; 52. rotating rod; 53. first motor; 6. placing assembly; 61. cylindrical support; 611. receiving groove; 62. inner gear ring; 63. gear; 64. second motor; 7. supporting assembly; 71. supporting net; 72. elastic member; 8. material dispensing assembly; 81. center rod; 82. material dispensing strip; 821. material dispensing surface; 83. connecting rod; 84. material dispensing rod; 840. material dispensing end; 841. fixed rod; 842. movable rod; 843. compression spring. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-6 This application is described in further detail.

[0028] The present application embodiment discloses a vacuum heat treatment furnace. Figure 1 and Figure 2 , the vacuum heat treatment furnace comprises a furnace body 1 having a heating chamber 11 and a heating assembly 2; A frame 12 is fixedly connected to the outside of the furnace body 1 to support the furnace body 1 on the ground; the heating chamber 11 is cylindrical with a first central axis, and in the present disclosure, the first central axis is horizontally arranged; The furnace wall of the furnace body 1 is hollow, the heating assembly 2 includes an electric heating wire 21 located in the furnace wall of the furnace body 1, the electric heating wire 21 is arranged parallel to the first central axis, the heating assembly 2 includes a plurality of electric heating wires 21, the plurality of electric heating wires 21 are evenly arranged in a virtual circumferential direction, and the central axis of the virtual circle coincides with the first central axis; a feed trough 13 is provided through the furnace wall of the furnace body 1, the length direction of the feed trough 13 is parallel to the first central axis, the feed trough 13 is located at the top of the furnace body 1, and screws and nuts can be added to the furnace body 1 through the feed trough 13; A sealing plate 3 for closing the feed trough 13 is also provided on the furnace body 1. The depth direction of the feed trough 13 is parallel to the diameter direction of the furnace body 1 at the feed trough 13. The sealing plate 3 is slidably connected to the furnace body 1 along the depth direction of the feed trough 13. A sealing strip 31 for inserting into the feed trough 13 is convexly provided at one end of the sealing plate 3 close to the furnace body 1. When the sealing strip 31 is inserted into the feed trough 13, the sealing plate 3 contacts the outer wall of the furnace body 1 to close the feed trough 13 through the sealing plate 3. In order to drive the sealing plate 3 to move, a linear drive member 32 is also provided between the furnace body 1 and the sealing plate 3. In the present disclosure, the linear drive member 32 is preferably an electric cylinder, and the cylinder body of the linear drive member 32 is fixedly connected to the outer end wall of the furnace body 1. The piston rod of the linear drive member 32 is fixedly connected to the sealing plate 3, so that the sealing plate 3 is driven by the linear drive member 32 to move, so as to close or open the feed trough 13. In some embodiments of the present application, a mounting seat 14 is fixedly connected to the outer wall of the furnace body 1, and the mounting seat 14 is located on the side of the second central axis away from the feed trough 13. The cylinder of the linear drive member 32 is fixedly connected to the mounting seat 14, and an avoidance gap 15 is formed between the linear drive member 32 and the end wall of the furnace body 1 in a direction parallel to the second central axis. After the feed trough 13 is closed, the furnace body 1 can be evacuated. Specifically, a vacuum pump 4 is fixedly connected to the furnace body 1, and an exhaust port connected to the air inlet of the vacuum pump 4 is opened on the furnace wall of the furnace body 1, so that the furnace body 1 can be evacuated by the vacuum pump 4.

[0029] Reference Figure 3 In some embodiments of the present application, in order to facilitate adding the product to be processed into the furnace body 1, in some embodiments of the present application, a feeding assembly 5 is also included, and the feeding assembly 5 includes a feeding bar 51, a rotating rod 52 and a first motor 53; The feeding bar 51 is located outside the furnace body 1, and the feeding bar 51 is parallel to the first central axis. A plurality of feeding holes 511 are formed through the feeding bar 51, and the plurality of feeding holes 511 are spaced apart and distributed on the first central axis. The feeding bar 51 is in contact with the outer wall of the furnace body 1, and the feeding bar 51 can rotate along the furnace body 1 around the first central axis, so that the feeding bar 51 can be adjusted between the feeding posture and the unloading posture. When the feeding bar 51 is in the feeding posture, the feeding bar 51 is located on the side of the feeding trough 13, and the outer wall of the furnace body 1 forms the bottom of the feeding hole 511 to form an area for placing the product to be processed; when the feeding bar 51 is in the unloading posture, the feeding bar 51 rotates to the top of the feeding trough 13, the feeding hole 511 is connected with the feeding trough 13, and the product to be processed in the feeding hole 511 can fall into the feeding trough 13; The rotating rod 52 and the first motor 53 are located in the avoidance gap 15. One end of the rotating rod 52 is fixedly connected to the feeding bar 51, and the other end is fixedly extended to the first central axis. The first motor 53 is a servo motor. The housing of the first motor 53 is fixedly connected to the outer end wall of the furnace body 1. The output shaft of the first motor 53 is fixedly connected to the rotating rod 52, so that the first motor 53 drives the rotating rod 52 to rotate around the first central axis. Preferably, two feeding assemblies 5 are provided in the present disclosure. In the virtual circumferential direction, one feeding assembly 5 is provided on each side of the feed trough 13, and each end wall of the furnace body 1 is connected to a rotating rod 52 and a first motor 53 in the feeding assembly 5.

[0030] Reference Figure 2 and Figure 4 , the present application also includes a material placement component 6, the material placement component 6 includes a cylindrical support 61 with a second central axis, the second central axis coincides with the first central axis, the cylindrical support 61 is located in the heating chamber 11, and a rotation gap 111 is formed between the cylindrical support 61 and the outer peripheral wall and the inner peripheral wall of the furnace body 1, and the rotation gap 111 is less than 2 mm, and is preferably 1 mm in the present disclosure; a plurality of accommodating grooves 611 are opened on the outer peripheral wall of the cylindrical support 61, and a plurality of accommodating grooves 611 are distributed in a matrix on the unfolded surface of the cylindrical support 61, that is, a plurality of accommodating grooves 611 form a row in a direction parallel to the first central axis, and a plurality of rows of accommodating grooves 611 are distributed in the virtual circumferential direction; The cylindrical support 61 is connected to the furnace body 1 by rotating around the second central axis. As the cylindrical support 61 rotates, the multiple rows of receiving grooves 611 rotate to the feeding groove 13 in sequence, so that the nuts and bolts to be processed for aerospace can be placed in the receiving grooves 611 after passing through the connecting grooves. One or more products to be processed can be placed in each receiving groove 611. The receiving grooves 611 containing the products to be processed rotate with the cylindrical support 61 to the inner wall of the furnace body 1. The inner wall of the furnace body 1 can form a chamber for accommodating nuts and bolts with the groove wall of the receiving groove 611. As the cylindrical support 61 rotates, the products to be processed in the receiving grooves 611 can be heated more evenly. In order to drive the cylindrical support 61, in some embodiments of the present application, the placing assembly 6 also includes an inner gear ring 62, a gear 63 and a second motor 64, the inner gear ring 62 and the gear 63 are located at the inner end wall of the furnace body 1, the central axis of the inner gear ring 62 coincides with the first central axis, and the inner gear ring 62 can rotate along the inner end wall of the furnace body 1 around the first central axis, and the outer peripheral wall of the inner gear ring 62 is fixedly connected to the cylindrical support 61; the gear 63 is rotatably connected to the inner end wall of the furnace body 1 around the third central axis, the third central axis is located on the side of the second central axis and is parallel to the second central axis; the second motor 64 is a servo motor, the housing of the second motor 64 is fixedly connected to the outer end wall of the furnace body 1, and the output shaft of the second motor 64 passes through the end wall of the furnace body 1 and is coaxially fixedly connected to the gear 63, so that the second motor 64 drives the gear 63 to rotate, and then the gear 63 drives the inner gear ring 62 to rotate, so that the cylindrical support 61 can rotate synchronously with the inner gear ring 62.

[0031] Reference Figure 5 and Figure 6 In some embodiments of the present application, a support assembly 7 is further included. Each receiving groove 611 is provided with a corresponding support assembly 7. Specifically, the receiving groove 611 is arranged through the wall of the cylindrical support member 61. The support assembly 7 also includes a support net 71 and an elastic member 72. The support net 71 is used to separate the receiving groove 611 and the inner cavity of the cylindrical support member 61 in the radial direction of the cylindrical support member 61. The support net 71 is located at one end of the receiving groove 611 close to the second central axis. One end of the elastic member 72 is fixedly connected to the support net 71, and the other end is fixedly connected to the support net 71. The elastic expansion and contraction directions of the supporting net 71 and the elastic member 72 are parallel to the first direction, the first direction is parallel to the net surface of the supporting net 71, and the first direction is perpendicular to the second central axis; in some embodiments, two elastic members 72 are provided, and the two elastic members 72 are spaced apart in the first direction, and in the first direction, the supporting net 71 is located between the two elastic members 72; the elastic member 72 is a spring sheet, so that the supporting net 71 can shake in the containing groove 611 along the first direction, and the product to be processed located on the supporting net 71 will also shake, so that the product to be processed can be heated more evenly; Preferably, when the feeding bar 51 is in the unloading posture, the receiving groove 611 is aligned with the feeding hole 511 so that the product to be processed in the feeding hole 511 can fall into the receiving groove 611 more accurately and smoothly.

[0032] Reference Figure 5 and Figure 6 In some embodiments of the present application, a material shifting assembly 8 is further included, and the material shifting assembly 8 includes a central rod 81, a material shifting bar 82, a connecting rod 83 and a material shifting rod 84; The center rod 81 is fixedly connected to the inner wall of the furnace body 1, and the center rod 81 is arranged parallel to the second center axis. The material stripping strip 82 is also arranged parallel to the second direction. The cross section of the material stripping strip 82 is arc-shaped, and the arc opening faces the second center axis. There are multiple material stripping strips 82, and the material stripping strips 82 are all located on the side of the second center axis close to the feed trough 13. The wall surface of the material stripping strip 82 away from the second center axis is the material stripping surface 821. One end of the connecting rod 83 is fixedly connected to the central rod 81, and the other end is fixedly connected to the material stripping bar 82, so as to fix the material stripping bar 82 to the furnace body 1; One end of the material-moving rod 84 is fixedly connected to the support net 71, and the other end extends toward one side of the second central axis to form a material-moving end 840, and when the material-moving strip 82 moves to the material-moving rod 84, the material-moving end 840 of the material-moving rod 84 can contact the material-moving surface 821 of the material-moving strip 82; The material-moving rod 84 is an elastic telescopic rod, and the telescopic direction is perpendicular to the second central axis. The material-moving rod 84 can contact the material-moving strip 82 during the rotation of the cylindrical support 61. After the material-moving end 840 of the material-moving rod 84 contacts the material-moving strip 82, as the cylindrical support 61 rotates, the material-moving strip 82 will push the elastic telescopic rod to shorten. As the material-moving rod 84 continues to rotate, the material-moving rod 84 itself will reset under the action of elastic force, and finally separate from the material-moving strip 82. During this process, the material-moving rod 84 will shake under the collision of the material-moving strip 82, which can drive the product to be processed on the support net 71 to shake, so that the product to be processed is heated more evenly. The material shifting rod 84 includes a fixed rod 841, a movable rod 842 and a compression spring 843. The fixed rod 841 is fixedly connected to the support net 71. The movable rod 842 is slidably connected to the fixed rod 841 along the rod length direction of the material shifting rod 84. The material shifting end 840 is the end of the movable rod 842 away from the fixed rod 841. The compression spring 843 is sleeved on the movable rod 842, and one end of the compression spring 843 is fixedly connected to the fixed rod 841, and the other end is fixedly connected to the movable rod 842.

[0033] The implementation principle of a vacuum heat treatment furnace in the embodiment of the present application is as follows: during operation, the product to be processed is placed in the feeding hole 511, and then the first motor 53 drives the feeding bar 51 to rotate to the notch of the feeding trough 13, and the product to be processed in the feeding hole 511 can fall into a row of receiving slots 611; Next, the cylinder support 61 rotates to feed the products to be processed in the next group of feeding strips 51 into the next row of receiving slots 611. When the receiving slots 611 are filled, the sealing plate 3 is driven by the linear drive 32 to move to close the feeding slot 13. After the feed trough 13 is closed, the furnace body 1 is evacuated, and then the heating wire 21 is energized to heat the furnace body 1. During this process, the second motor 64 drives the cylindrical support 61 to continue rotating so that the product to be processed is heated evenly.

[0034] After the processing is completed, the product to be processed is taken out from the furnace body 1. The present disclosure does not make any specific restrictions on the method of taking out the product to be processed. It can be taken out from the feed trough 13. For example, a discharge port can be opened at the bottom of the furnace body 1, and the discharge port can be detachably connected to a blocking plate to facilitate the removal of the processed product from the furnace body 1.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum heat treatment furnace, characterized in that: include: A furnace body (1) having a heating chamber (11), wherein the heating chamber (11) is cylindrical with a first central axis; A heating component (2), the heating component (2) being connected to the furnace body (1) to provide heat to the furnace body (1); as well as A material placing component (6), the material placing component (6) comprising: A cylindrical support (61) having a second central axis, the cylindrical support (61) being located in the heating chamber (11), and the first central axis coincides with the second central axis, a rotation gap (111) is gradually formed between the outer peripheral wall of the cylindrical support (61) and the inner peripheral wall of the furnace body (1), the rotation gap (111) being less than 2 mm, and the cylindrical support (61) being rotatably connected to the furnace body (1) around the second central axis; The outer peripheral wall of the cylindrical support member (61) is provided with a plurality of accommodating grooves (611), and the plurality of accommodating grooves (611) are distributed in a matrix on the unfolded surface of the cylindrical support member (61); A feed trough (13) communicating with the heating chamber (11) is provided through the furnace wall of the furnace body (1), and the length direction of the feed trough (13) is parallel to the second central axis; The containing groove (611) can rotate along with the cylindrical support (61) to communicate with the feeding groove (13); The furnace body (1) is provided with a sealing plate (3) at the containing groove (611) for closing the containing groove (611).

2. A vacuum heat treatment furnace according to claim 1, characterized in that: It also includes a support assembly (7), wherein the receiving groove (611) penetrates the cylinder wall of the cylinder support member (61), and each of the receiving grooves (611) is provided with a corresponding support assembly (7), and the support assembly (7) includes: A support net (71), wherein the support net (71) is located in the receiving groove (611) and at one end of the receiving groove (611) close to the second central axis, so that the support net (71) separates the receiving groove (611) and the inner cavity of the cylindrical support member (61); the support net (71) is connected to the cylindrical support member (61).

3. A vacuum heat treatment furnace according to claim 2, characterized in that: The support assembly (7) further comprises: An elastic member (72), wherein the elastic member (72) is connected between the support net (71) and the cylindrical support member (61), and the elastic expansion and contraction direction of the elastic member (72) is parallel to the mesh surface of the support net (71).

4. A vacuum heat treatment furnace according to claim 3, characterized in that: It also includes a material shifting assembly (8), wherein the material shifting assembly (8) includes: A center rod (81), wherein the center rod (81) is fixedly connected to the furnace body (1); A material stripping strip (82), the material stripping strip (82) is parallel to the second central axis, the material stripping strip (82) has a material stripping surface (821) on the wall surface away from the second central axis, and the material stripping surface (821) is in an arc shape with an opening toward one side of the second central axis; A connecting rod (83), one end of which is fixedly connected to the material-selecting strip (82), and the other end of which is fixedly connected to the central rod (81); and A material shifting rod (84), the material shifting rod (84) being an elastic telescopic rod, one end of the material shifting rod (84) being fixedly connected to the support net (71), and the other end being a material shifting end (840) extending toward the second central axis; When the material-moving rod (84) rotates with the cylindrical support column, the material-moving rod (84) can change its length under the push of the material-moving bar (82), and the material-moving end (840) of the material-moving rod (84) can intermittently contact the material-moving surface (821); The elastic expansion and contraction direction of the elastic member (72) is perpendicular to the second central axis.

5. A vacuum heat treatment furnace according to claim 4, characterized in that: The material-moving end (840) of the material-moving rod (84) is a round head.

6. A vacuum heat treatment furnace according to claim 5, characterized in that: It also includes a feeding assembly (5), wherein the feeding assembly (5) includes: A feeding bar (51), the feeding bar (51) is arranged parallel to the first central axis, the feeding bar (51) is slidably connected to the outer peripheral wall of the furnace body (1) around the circumference of a virtual circle, the virtual circle is coaxial with the cylindrical support (61), and the feeding bar (51) is in contact with the outer peripheral wall of the furnace body (1); The feeding bar (51) is provided with a plurality of feeding holes (511) extending therethrough, and the plurality of feeding holes (511) are arranged at intervals along the length direction of the feeding bar (51); The feeding bar (51) can rotate along the furnace body (1) to a discharging posture. When the feeding bar (51) is in the discharging posture, the feeding hole (511) and the containing groove (611) are correspondingly connected in the radial direction of the virtual circle through the feeding groove (13).

7. A vacuum heat treatment furnace according to claim 6, characterized in that: The feeding assembly (5) further comprises: a rotating rod (52), the rotating rod (52) being rotatably connected to the furnace body (1) around a first central axis, one end of the rotating rod (52) being fixedly connected to the feeding bar (51), and the other end being rotatably connected to the furnace body (1); and A first motor (53), the first motor (53) is connected between the rotating rod (52) and the furnace body (1) to drive the rotating rod (52) to rotate along the furnace body (1).

8. A vacuum heat treatment furnace according to claim 7, characterized in that: The feeding components (5) are provided with two, and in the virtual circumferential direction, one feeding bar (51) is correspondingly provided on each side of the feeding trough (13).

9. A vacuum heat treatment furnace according to any one of claims 1 to 8, characterized in that: The furnace body (1) is provided with a vacuum pump (4).

10. A vacuum heat treatment furnace according to claim 9, characterized in that: The furnace wall of the furnace body (1) is hollow, and the heating component (2) comprises: An electric heating wire (21), the electric heating wire (21) is located in the furnace wall of the furnace body (1) and is fixedly connected to the furnace wall of the furnace body (1).

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