Pre-vacuumizing atmosphere furnace

Abstract

The utility model relates to the technical field of atmosphere furnaces, and discloses a pre-vacuumizing atmosphere furnace which comprises a control base, self-locking universal wheels are arranged at four corners of the bottom of the control base, an outer furnace body is arranged at the top end of the control base, an inner furnace body is arranged in the outer furnace body in a sliding connection mode, an inner furnace door is arranged on one side of the inner furnace body in a rotating connection mode, and the inner furnace door is arranged on the other side of the inner furnace body. A heating assembly is arranged in the inner furnace body, a sealing structure is arranged between the inner furnace door and the inner furnace body, a vacuum pump communicated with the inner furnace body is arranged at the top end of the outer furnace body, and cooling fans are arranged on the two sides of the inner furnace body. Compared with the prior art, the cooling device has the advantages that a workpiece does not need to be gradually cooled in the furnace, the heated and sintered workpiece can be directly pulled out conveniently, heat dissipation is accelerated, heat is rapidly dissipated to the surrounding environment, and cooling efficiency is high.

Description

Technical Field

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

[0002] Vacuum atmosphere furnace, also known as oxygen-free annealing furnace, vacuum atmosphere sintering furnace, etc., is a method of sintering objects in a furnace chamber with a certain amount of gas. It is a new type of heat treatment technology that combines vacuum technology with heat treatment technology. Its working principle is to discharge part of the material in the furnace chamber through the vacuum system in the furnace chamber, so that the pressure in the furnace chamber is less than a standard atmospheric pressure, thereby achieving a vacuum state. In the fields of metal processing, material heat treatment, etc., workpieces often need to be heated in a vacuum environment to avoid oxidation and improve the processing quality.

[0003] In a traditional vacuum atmosphere furnace, after the workpiece is processed, the temperature inside the furnace is high and the workpiece itself is also in a high temperature state. In order to ensure the quality and safety of the workpiece, natural cooling is usually used to gradually cool the workpiece in the furnace. Due to the limited heat conduction efficiency between the furnace and the workpiece, the heat cannot be quickly dissipated to the external environment, and the cooling efficiency is low. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that after the traditional vacuum atmosphere furnace sintering the workpiece, the workpiece needs to be cooled naturally in the furnace, and the cooling efficiency is low.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a pre-vacuum atmosphere furnace, including a control base, the four corners of the bottom of the control base are provided with self-locking universal wheels, the top of the control base is provided with an outer furnace body, the outer furnace body is provided with a slidingly connected inner furnace body, one side of the inner furnace body is provided with a rotatably connected inner furnace door, the inner furnace body is provided with a heating assembly, a sealing structure is provided between the inner furnace door and the inner furnace body, the top of the outer furnace body is provided with a vacuum pump communicated with the inner furnace body, and cooling fans are provided on both sides of the inner furnace body.

[0008] As an improvement, a control panel and a pressure gauge are respectively provided on one side of the control base 1 , and a plurality of control buttons are provided on one side of the control base 1 and below the control panel.

[0009] As an improvement, a rotatably connected outer furnace door is provided on one side of the outer furnace body, and the outer furnace door and the outer furnace body as well as the inner furnace door and the inner furnace body are integrally connected via a lock body.

[0010] As an improvement, the sealing structure includes a cavity arranged in the inner furnace door, a sealing plate for cooperating with the cavity is provided on one side of the inner furnace door, a sealing ring is provided around the sealing plate, and a sealing groove for cooperating with the sealing ring is provided on one side of the inner furnace body and around the cavity.

[0011] As an improvement, the top of the inner furnace body and the vacuum pump are connected via an exhaust pipe, and a sealing valve is provided on the exhaust pipe.

[0012] As an improvement, the top of the inner furnace body and the vacuum pump are connected via an exhaust pipe, and a sealing valve is provided on the exhaust pipe.

[0013] As an improvement, convex sliding blocks are provided on both sides of the bottom end of the inner furnace body, and at least one concave sliding groove used in conjunction with the convex sliding blocks is provided on the inner bottom of the outer furnace body.

[0014] 3. Beneficial Effects

[0015] The advantages of the utility model compared with the prior art are:

[0016] The inner furnace body can be directly pulled out through the convex slider and the concave slide groove, and the cooling fans on both sides can accelerate air circulation, with high cooling efficiency. At the same time, the combination of the outer furnace body and the inner furnace body has strong overall sealing and thermal insulation effects, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the pre-vacuum atmosphere furnace of the utility model. Figure 1 .

[0018] Figure 2 This is a three-dimensional schematic diagram of the utility model pre-vacuum atmosphere furnace Figure 2 .

[0019] Figure 3 The utility model is a pre-vacuum atmosphere furnace Figure 1 A magnified detail of part A.

[0020] Figure 4 The utility model is a pre-vacuum atmosphere furnace Figure 1 A magnified detail of part B.

[0021] Figure 5 The utility model is a pre-vacuum atmosphere furnace Figure 1 A magnified detail of part C.

[0022] As shown in the figure: 1. Control base; 2. Self-locking universal wheel; 3. Control panel; 4. Pressure gauge; 5. Control button; 6. Outer furnace body; 7. Inner furnace body; 8. Outer furnace door; 9. Inner furnace door; 10. Cavity; 11. Sealing plate; 12. Sealing ring; 13. Sealing groove; 14. Vacuum pump; 15. Exhaust pipe; 16. Inlet pipe; 17. Convex slider; 18. Concave slide groove; 19. Cooling fan. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] Combined with Figure 1 The pre-vacuum atmosphere furnace comprises a control base 1, the four bottom corners of the control base 1 are provided with self-locking universal wheels 2, the top of the control base 1 is provided with an outer furnace body 6, one side of the control base 1 is provided with a control panel 3 and a pressure gauge 4, and one side of the control base 1 and below the control panel 3 is provided with a plurality of control buttons 5.

[0026] Through the above structure, the overall operation status of the vacuum atmosphere furnace can be viewed in real time by using the control panel 3 and the pressure gauge 4, and the overall operation can be controlled by a plurality of control buttons 5, which is convenient to use.

[0027] Combined with Figure 1 and attached Figure 2 A slidingly connected inner furnace body 7 is provided inside the outer furnace body 6, a rotatably connected inner furnace door 9 is provided on one side of the inner furnace body 7, a heating component is provided inside the inner furnace body 7, a rotatably connected outer furnace door 8 is provided on one side of the outer furnace body 6, and the outer furnace door 8 and the outer furnace body 6 as well as the inner furnace door 9 and the inner furnace body 7 are connected as a whole through a lock body.

[0028] Through the above structure, when the outer furnace body 6 and the inner furnace body 7 are both in a vacuum state, the inner furnace body 7 is provided with a heating component that can directly heat and sinter the workpiece, and the outer furnace door 8 and the inner furnace door 9 are easy to open and close, so that the sintered workpiece can be easily taken out.

[0029] Embodiment 2

[0030] Combined with Figure 1 , Attachment Figure 3 and attached Figure 4A slidingly connected inner furnace body 7 is provided inside the outer furnace body 6, a sealing structure is provided between the inner furnace door 9 and the inner furnace body 7, a vacuum pump 14 communicating with the inner furnace body 7 is provided at the top of the outer furnace body 6, and cooling fans 19 are provided on both sides of the inner furnace body 7.

[0031] Through the above structure, the sealing structure between the inner furnace door 9 and the inner furnace body 7 further improves the sealing performance, and the vacuum pump 14 can evacuate the atmosphere furnace. At the same time, the inner furnace body 7 is convenient to pull out, and the cooling fans 19 on both sides are convenient for heat dissipation.

[0032] Combined with Figure 3 and attached Figure 4 The sealing structure includes a cavity 10 arranged in the inner furnace door 9, a sealing plate 11 for cooperating with the cavity 10 is provided on one side of the inner furnace door 9, a sealing ring 12 is provided around the sealing plate 11, and a sealing groove 13 for cooperating with the sealing ring 12 is provided on one side of the inner furnace body 7 and around the cavity 10.

[0033] With the above structure, when the inner furnace door 9 is closed, the sealing plate 11 extends into the cavity 10, and the sealing ring 12 is tightly embedded in the sealing groove 13, so that the sealing inside the inner furnace door 9 is good and vacuum extraction is convenient.

[0034] Combined with Figure 1 The top of the inner furnace body 7 is connected to the vacuum pump 14 through an exhaust pipe 15, and a sealing valve 1 is provided on the exhaust pipe 15. The top of the outer furnace body 6 is provided with an air inlet pipe 16 extending into the inner furnace body 7, and a sealing valve 2 is provided on the air inlet pipe 16.

[0035] Through the above structure, the gas in the inner furnace body 7 can be directly evacuated by using the vacuum pump 14 and the exhaust pipe 15, and specific gas can be directly introduced into the inner furnace body 7 through the air inlet pipe 16 to facilitate sintering.

[0036] Combined with Figure 5 Convex sliding blocks 17 are provided on both sides of the bottom end of the inner furnace body 7, and at least one concave sliding groove 18 used in conjunction with the convex sliding block 17 is provided at the inner bottom of the outer furnace body 6.

[0037] Through the above structure, the convex slider 17 and the concave slide groove 18 are used to facilitate the pulling of the inner furnace body 7, so that the inner furnace body 7 can be pulled out from the outer furnace body 6 for cooling.

[0038] When the utility model is implemented:

[0039] The outer furnace door 8 and the inner furnace door 9 are opened in sequence, the workpiece to be heated and sintered is placed in the inner furnace body 7, and then the inner furnace door 9 and the outer furnace door 8 are closed respectively.

[0040] When the inner furnace door 9 is closed, the sealing plate 11 extends into the cavity 10, and the sealing ring 12 is tightly embedded in the sealing groove 13, so that the sealing inside the inner furnace door 9 is good. Start the vacuum pump 14, the exhaust pipe 15 can directly evacuate the gas in the inner furnace body 7, start the heating component in the inner furnace body 7, and directly heat and sinter the workpiece.

[0041] After completion, slowly release the gas in the inner furnace body 7 to keep the inner furnace body 7 and the external air pressure balanced, then open the outer furnace door 8 and the inner furnace door 9 in turn, use the convex slider 17 and the concave slide groove 18 to directly pull out the inner furnace body 7, start the cooling fans on both sides to accelerate the heat dissipation, so that the heat is quickly dissipated to the surrounding environment, and the cooling efficiency is high.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0044] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A pre-vacuum atmosphere furnace, comprising a control base (1), wherein the four corners of the bottom of the control base (1) are each provided with a self-locking universal wheel (2), and the top of the control base (1) is provided with an outer furnace body (6), characterized in that: The outer furnace body (6) is provided with an inner furnace body (7) which is slidably connected thereto, one side of the inner furnace body (7) is provided with an inner furnace door (9) which is rotatably connected thereto, a heating component is provided in the inner furnace body (7), a sealing structure is provided between the inner furnace door (9) and the inner furnace body (7), a vacuum pump (14) which is in communication with the inner furnace body (7) is provided at the top end of the outer furnace body (6), and cooling fans (19) are provided on both sides of the inner furnace body (7).

2. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: A control panel (3) and a pressure gauge (4) are respectively provided on one side of the control base (1), and a plurality of control buttons (5) are provided on one side of the control base (1) and below the control panel (3).

3. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: A rotatably connected outer furnace door (8) is provided on one side of the outer furnace body (6); the outer furnace door (8) and the outer furnace body (6) as well as the inner furnace door (9) and the inner furnace body (7) are integrally connected via a lock body.

4. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: The sealing structure comprises a cavity (10) arranged in the inner furnace door (9), a sealing plate (11) used in conjunction with the cavity (10) is provided on one side of the inner furnace door (9), a sealing ring (12) is provided around the sealing plate (11), and a sealing groove (13) used in conjunction with the sealing ring (12) is provided on one side of the inner furnace body (7) and around the cavity (10).

5. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: The top end of the inner furnace body (7) and the vacuum pump (14) are connected via an exhaust pipe (15), and a sealing valve (1) is provided on the exhaust pipe (15).

6. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: An air inlet pipe (16) extending into the inner furnace body (7) is provided at the top end of the outer furnace body (6), and a sealing valve 2 is provided on the air inlet pipe (16).

7. The pre-vacuum atmosphere furnace according to claim 1, characterized in that: Both sides of the bottom end of the inner furnace body (7) are provided with convex sliding blocks (17), and the inner bottom of the outer furnace body (6) is provided with at least one concave sliding groove (18) used in conjunction with the convex sliding block (17).

Images