Angle-adjustable vacuum furnace with heat insulation plate

Abstract

The angle-adjustable vacuum furnace comprises a furnace body, a bottom plate is fixedly connected to the bottom end of the inner side of the furnace body, a fixing rod is arranged in the middle of the top end of the bottom plate, a plurality of storage trays are arranged on the outer side of the fixing rod from top to bottom, a plurality of heat insulation plates are installed above the bottom plate in an annular array mode, and a shaft rod is installed in the middle of each heat insulation plate. The bottom end of the shaft rod movably penetrates through the bottom plate and is fixedly connected with a driven gear, an inner gear ring is arranged below the bottom plate, the bottom end of the inner gear ring is fixedly connected with a bevel gear ring, the bottom end of the outer wall of the furnace body is fixedly connected with a driving motor, one end of an output shaft of the driving motor movably penetrates through the inner side of the furnace body and is fixedly connected with a bevel gear, and the bevel gear is vertically meshed with the bevel gear ring. The space defined by the multiple heat insulation plates can play a good role in heat insulation and heat loss reduction, after workpiece treatment is completed, the heat insulation plates rotate, gaps are reserved between the heat insulation plates, the heat insulation effect is not played any more, and therefore the heat dissipation effect in the furnace body can be accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum furnaces, in particular to a vacuum furnace with an angle-adjustable heat insulation board. Background Art

[0002] A vacuum furnace is a special device that can use a vacuum system to discharge some of the materials in the furnace cavity in a specific space, making the pressure in the furnace cavity lower than the standard atmospheric pressure, thereby achieving a vacuum state in the furnace cavity;

[0003] Vacuum furnaces are widely used in industrial production and can realize vacuum quenching and tempering, vacuum annealing, vacuum chemical heat treatment and vacuum coating processes. In addition, vacuum furnaces can also be used for high-temperature vacuum sintering, annealing, tempering, aging treatment of ceramic materials, ceramic-metal composites, refractory metals and alloy materials, as well as vacuum brazing of alloy tools and superhard materials.

[0004] The vacuum furnace body is generally equipped with heat insulation boards or heat insulation screens and other structures, which can play the role of heat insulation, heat preservation and heat loss reduction. However, the setting of heat insulation boards will also reduce the heat dissipation speed of the furnace body after the workpiece processing is completed.

[0005] Therefore, those skilled in the art provide a vacuum furnace with an adjustable angle of a heat shield to solve the problems raised in the above background technology. Utility Model Content

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a vacuum furnace with an angle-adjustable heat insulation board.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A vacuum furnace with an adjustable angle of heat insulation plate comprises a furnace body, a bottom plate fixedly connected to the bottom end of the inner side of the furnace body, a fixing rod is provided in the middle of the top of the bottom plate, a plurality of storage trays are provided on the outside of the fixing rod from top to bottom, a plurality of heat insulation plates are installed in a circular array above the bottom plate, a shaft rod is installed in the middle of the heat insulation plate, the bottom end of the shaft rod movably passes through the bottom plate and is fixedly connected to a driven gear, an inner gear ring is provided below the bottom plate, and the outer side of the driven gear is meshed with the inner side of the inner gear ring, the bottom end of the inner gear ring is fixedly connected to a bevel gear ring, a drive motor is fixedly connected to the bottom end of the outer wall of the furnace body, one end of the output shaft of the drive motor movably passes through the inner side of the furnace body and is fixedly connected to a bevel gear, and the bevel gear is vertically meshed with the bevel gear ring.

[0009] Preferably, the two sides of the heat insulation board are arc-shaped structures, and the edges of two adjacent heat insulation boards are tangent to each other.

[0010] Preferably, an annular groove is provided at the bottom end of the bottom plate, a limit ring is fixedly connected to the top end of the inner gear ring, and the limit ring is rotatably clamped in the annular groove.

[0011] Preferably, a cooling water pipe is coiled around the inner wall of the furnace body, and a water inlet pipe and a water outlet pipe are respectively provided at both ends of the cooling water pipe, and the water inlet pipe and the water outlet pipe both pass through the furnace body and extend to the outside.

[0012] Preferably, a top cover is installed on the top of the furnace body, and the top of the fixing rod is fixed to the middle of the bottom end of the top cover. Cylinders are installed on both sides of the outer wall of the furnace body, and the movable end of the cylinder is fixed to a connecting rod, and one end of the connecting rod is connected to the top of the top cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The technical solution designed by the present invention improves the fixed heat insulation board structure in the traditional vacuum furnace into a combination structure of multiple heat insulation boards with adjustable angles. When the furnace body is in use, the space enclosed by the multiple heat insulation boards can play a good role in heat insulation and reduce heat loss. After the workpiece is processed, the various heat insulation boards can be rotated through the corresponding transmission mechanism, leaving gaps between each other, and no longer play a heat insulation role, thereby accelerating the heat dissipation effect in the furnace body. The cooling water pipes provided can further increase the heat dissipation speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments or the prior art.

[0016] Figure 1 This is a schematic diagram of the internal structure of the furnace body proposed in the present invention;

[0017] Figure 2 This is a schematic diagram of the cooling water pipe installation structure proposed by the utility model;

[0018] Figure 3 The utility model proposed Figure 1 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. furnace body; 2. bottom plate; 3. fixing rod; 4. storage tray; 5. heat insulation plate; 6. shaft; 7. driven gear; 8. internal gear ring; 9. bevel gear ring; 10. drive motor; 11. bevel gear; 12. limit ring; 13. cooling water pipe; 14. water inlet pipe; 15. water outlet pipe; 16. cylinder; 17. top cover; 18. connecting rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-3 A vacuum furnace with an adjustable angle of heat insulation plate comprises a furnace body 1, a bottom plate 2 is fixedly connected to the bottom end of the inner side of the furnace body 1, a fixing rod 3 is provided in the middle of the top of the bottom plate 2, and a plurality of storage trays 4 are provided on the outside of the fixing rod 3 from top to bottom. A plurality of heat insulation plates 5 are installed in a ring array above the bottom plate 2, and a shaft rod 6 is installed in the middle of the heat insulation plate 5. The bottom end of the shaft rod 6 movably passes through the bottom plate 2 and is fixedly connected to a driven gear 7. An inner gear ring 8 is provided below the bottom of the bottom plate 2, and the outer side of the driven gear 7 is meshed with the inner side of the inner gear ring 8, and the bottom end of the inner gear ring 8 is fixedly connected to a bevel gear ring 9. A driving motor 10 is fixedly connected to the bottom end of the outer wall of the furnace body 1, and one end of the output shaft of the driving motor 10 movably passes through the inner side of the furnace body 1 and is fixedly connected to a bevel gear 11, which meshes vertically with the bevel gear ring 9.

[0022] The technical solution adopted above drives the bevel gear 11 to rotate by driving the motor 10. The bevel gear 11 will drive the bevel gear ring 9 and the inner gear ring 8 to rotate together through the meshing action with the bevel gear ring 9. The rotation of the inner gear ring 8 will drive the driven gears 7 inside it to rotate. The rotation of the driven gear 7 will drive the heat insulation board 5 to rotate at a corresponding angle through the shaft 6, thereby controlling the opening or closing of multiple heat insulation boards 5. When the edges of the heat insulation boards 5 are fitted together, the space enclosed by them can keep the heat inside, which is convenient for the processing of the corresponding workpiece. When the workpiece processing is completed, the heat insulation board 5 can be rotated at a certain angle to open the space, which is convenient for the discharge of the corresponding heat.

[0023] The two sides of the heat insulation board 5 are arc-shaped structures, and the edges of two adjacent heat insulation boards 5 are tangent;

[0024] In the technical solution adopted above, the edge of the heat insulation board 5 is designed to prevent obstruction and interference when it moves independently.

[0025] An annular groove is formed at the bottom end of the bottom plate 2, and a limit ring 12 is fixedly connected to the top end of the inner gear ring 8, and the limit ring 12 is rotatably clamped in the annular groove;

[0026] In the technical solution adopted above, the role of the limiting ring 12 and the annular groove is to limit the position of the inner gear ring 8 so that it can only rotate and cannot be displaced in other directions.

[0027] A cooling water pipe 13 is wound around the inner wall of the furnace body 1. A water inlet pipe 14 and a water outlet pipe 15 are respectively provided at both ends of the cooling water pipe 13. The water inlet pipe 14 and the water outlet pipe 15 both pass through the furnace body 1 and extend to the outside.

[0028] In the above technical solution, after the workpiece is processed in the furnace body 1, the heat insulation plate 5 is opened and cooling water is continuously introduced into the cooling water pipe 13, so as to accelerate the heat dissipation and cooling of the workpiece.

[0029] A top cover 17 is installed on the top of the furnace body 1, and the top of the fixing rod 3 is fixed to the middle of the bottom end of the top cover 17. Cylinders 16 are installed on both sides of the outer wall of the furnace body 1, and the movable end of the cylinder 16 is fixed to a connecting rod 18, and one end of the connecting rod 18 is connected to the top of the top cover 17;

[0030] The technical solution adopted above drives the top cover 17 to rise through the cylinder 16, so that the top cover 17 drives the fixing rod 3 to move upward together, making it convenient to expose the placement tray 4 on the fixing rod 3 to the outside of the furnace body 1, thereby facilitating the removal and placement of workpieces. A groove is provided in the middle of the top of the bottom plate 2 to facilitate the insertion of the bottom end of the fixing rod 3 into its inner side when the fixing rod 3 moves downward. Corresponding annular protrusions and annular grooves are provided between the top cover 17 and the top of the furnace body 1 to improve the sealing when they are combined.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum furnace with an adjustable angle of heat insulation plate, comprising a furnace body (1), characterized in that: The bottom end of the inner side of the furnace body (1) is fixedly connected to a bottom plate (2), a fixing rod (3) is provided in the middle of the top of the bottom plate (2), and a plurality of storage trays (4) are provided on the outside of the fixing rod (3) from top to bottom. A plurality of heat insulation plates (5) are installed in a circular array above the bottom plate (2), and a shaft (6) is installed in the middle of the heat insulation plate (5). The bottom end of the shaft (6) movably passes through the bottom plate (2) and is fixedly connected to a driven gear (7). An inner gear ring (8) is provided below the bottom plate (2), and the outer side of the driven gear (7) is meshed with the inner side of the inner gear ring (8). The bottom end of the inner gear ring (8) is fixedly connected to a bevel gear ring (9). The bottom end of the outer wall of the furnace body (1) is fixedly connected to a driving motor (10). One end of the output shaft of the driving motor (10) is movable and passes through the inner side of the furnace body (1) and is fixedly connected to a bevel gear (11). The bevel gear (11) is vertically meshed with the bevel gear ring (9).

2. The vacuum furnace with adjustable heat shield angle according to claim 1, characterized in that: The two sides of the heat insulation board (5) are arc-shaped structures, and the edges of two adjacent heat insulation boards (5) are tangent to each other.

3. The vacuum furnace with adjustable heat shield angle according to claim 1, characterized in that: An annular groove is provided at the bottom end of the bottom plate (2); a limit ring (12) is fixedly connected to the top end of the inner gear ring (8), and the limit ring (12) is rotatably clamped in the annular groove.

4. The vacuum furnace with adjustable heat shield angle according to claim 1, characterized in that: A cooling water pipe (13) is wound around the inner wall of the furnace body (1), and a water inlet pipe (14) and a water outlet pipe (15) are respectively provided at both ends of the cooling water pipe (13), and both the water inlet pipe (14) and the water outlet pipe (15) penetrate the furnace body (1) and extend to the outside.

5. The vacuum furnace with adjustable heat shield angle according to claim 1, characterized in that: A top cover (17) is installed at the top of the furnace body (1), and the top of the fixing rod (3) is fixedly connected to the middle of the bottom end of the top cover (17). Cylinders (16) are installed on both sides of the outer wall of the furnace body (1), and the movable end of the cylinder (16) is fixedly connected to a connecting rod (18), and one end of the connecting rod (18) is connected to the top of the top cover (17).

Images