Vacuum tempering furnace for heat treatment

Abstract

The utility model belongs to the field of vacuum tempering furnaces, and particularly relates to a vacuum tempering furnace for heat treatment, which comprises a heat preservation shell, a supporting seat is fixedly mounted at the lower end of the heat preservation shell, a furnace shell is fixedly mounted in the heat preservation shell, a vacuum pipe is fixedly mounted at the upper end of the furnace shell, and a furnace cover is hinged to the outer side of the heat preservation shell. A locking mechanism is arranged on the heat preservation shell, a suction pipe is fixedly connected to the upper end of the heat preservation shell, and a sealing ring is fixedly connected to the lower portion of the inner wall of the suction pipe. The heat preservation shell, the suction pipe, the sealing ball and other structures are additionally arranged on the outer side of the furnace shell, the interior of the heat preservation shell can be vacuumized through the suction pipe in the using process, and then the temperature in the heat preservation shell can be isolated through vacuum; and the density of the gas in the heat preservation shell can be adjusted only through the suction pipe, so that the heat preservation performance of the heat preservation shell is convenient to control.

Description

Technical Field

[0001] This utility model relates to the field of vacuum tempering furnace technology, specifically a vacuum tempering furnace for heat treatment. Background Technology

[0002] A vacuum tempering furnace is an industrial device that performs tempering heat treatment in a vacuum or low-pressure protective atmosphere. It is mainly used to eliminate internal stress in materials, improve toughness, stabilize dimensions, and prevent oxidation and surface reactions. According to patent authorization announcement number CN220951933U, a vacuum tempering furnace for heat treatment is disclosed. This utility model relates to the field of vacuum tempering furnace technology and includes a base. A furnace body is fixedly installed on one side of the top of the base, and a water tank is fixedly installed on the side of the top of the base away from the furnace body. In this utility model, a heat-absorbing hose is installed inside a sealing ring to absorb heat from the sealing ring. The two ends of the heat-absorbing hose are connected to a water cooler. A circulating pump in the water cooler draws the warm water, after heat absorption in the heat-absorbing hose, into a heat dissipation coil. A cooling fan accelerates airflow, cooling the heat dissipation coil, thereby cooling the water. The cooled water is then pumped back into the heat-absorbing hose by the circulating pump, where it absorbs heat from the sealing ring again, thus achieving water circulation and heat absorption.

[0003] However, in existing tempering furnaces, to prolong the holding time, a thicker insulation material needs to be added to the outside of the furnace shell. This makes it difficult to adjust the natural cooling rate during tempering, affecting cooling efficiency. Furthermore, during the vacuuming process inside the furnace shell, an improperly closed furnace lid can easily allow gas to enter the interior, affecting the tempering quality. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum tempering furnace for heat treatment, which solves the problems of unadjustable heat preservation performance and incomplete furnace lid closure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum tempering furnace for heat treatment, comprising an insulation shell, a support base fixedly installed at the lower end of the insulation shell, a furnace shell fixedly installed inside the insulation shell, a vacuum tube fixedly installed at the upper end of the furnace shell, a furnace cover hinged to the outer side of the insulation shell, a locking mechanism provided on the insulation shell, a suction pipe fixedly connected to the upper end of the insulation shell, a sealing ring fixedly connected to the lower part of the inner wall of the suction pipe, a sealing ball slidably connected inside the sealing ring, a pull rod fixedly connected to the upper end of the sealing ball, a drive plate hinged to the upper end of the pull rod, an extension frame hinged to the lower end of the drive plate, and a spring provided on the outer side of the pull rod.

[0006] Preferably, the vacuum pipe is fixedly connected with the heat preservation shell, the expansion frame is hingedly connected with the suction pipe, and the sealing ring is fixedly connected with the heat preservation shell.

[0007] Preferably, one end of the spring one is fixedly connected with the suction pipe, and the other end of the spring one is fixedly connected with the sealing ball.

[0008] Preferably, the inside of the suction pipe is fixedly connected with a sealing pipe, the sealing pipe is slidably connected with the pull rod, and the sealing pipe can seal the connecting position of the pull rod and the suction pipe.

[0009] Preferably, the locking mechanism comprises an internal thread frame, the outside of the heat preservation shell is fixedly connected with the internal thread frame, the inside of the internal thread frame is threadedly connected with a screw rod, the outside of the furnace cover is fixedly connected with an inclined surface block, the lower end of the screw rod is rotatably connected with an extrusion block through a bearing, the upper end of the extrusion block is fixedly connected with a guide rod, and the upper end of the screw rod is fixedly connected with a hand wheel.

[0010] Preferably, the inclined surface block is slidably connected with the inclined surface of the extrusion block, and the inclined surface block is slidably connected with the heat preservation shell.

[0011] Preferably, the outside of the internal thread frame is fixedly connected with a guide block, and the guide block is slidably connected with the guide rod.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a heat preservation shell, a suction pipe and a sealing ball are arranged on the outside of the furnace shell, the inside of the heat preservation shell can be vacuumized through the suction pipe in the using process, the temperature in the heat preservation shell can be insulated through the vacuum, and when the heat preservation performance needs to be reduced, the gas density in the heat preservation shell can be adjusted through the suction pipe, so that the heat preservation performance of the heat preservation shell is convenient to control.

[0014] 2、The utility model discloses a screw rod, an extrusion block and a hand wheel are arranged on the heat preservation shell, after the furnace cover is closed, the screw rod can be rotated through the hand wheel, the extrusion block can be extruded on the inclined surface outside the inclined surface block outside the furnace cover in the rotating process of the screw rod, the furnace cover can be pressed on the outside of the heat preservation shell through the sliding connection between the inclined surface block and the extrusion block, and therefore the sealing performance between the furnace cover and the heat preservation shell can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure perspective view of the present application;

[0016] Figure 2 The overall structure perspective view of the present application; Figure 1 The perspective sectional view of the present application;

[0017] Figure 3 The overall structure perspective view of the present application; Figure 1 The perspective enlarged view of the furnace cover of the present application;

[0018] Figure 4 The overall structure perspective view of the present application; Figure 2 The enlarged view of A part structure of the present application;

[0019] Figure 5 The enlarged view of B part structure of the present application; Figure 2 The enlarged view of B part structure of the present application;

[0020] Figure 6 The perspective enlarged view of the extrusion block of the present application. Figure 5 The perspective enlarged view of the extrusion block of the present application.

[0021] In the drawing: 1, heat preservation shell; 2, support seat; 3, furnace shell; 4, vacuum pipe; 5, furnace cover; 6, locking mechanism; 7, suction pipe; 8, sealing ring; 9, sealing ball; 10, pull rod; 11, driving plate; 12, expansion frame; 13, spring one; 14, sealing pipe; 61, internal thread frame; 62, inclined block; 63, screw rod; 64, extrusion block; 65, guide rod; 66, guide block; 67, hand wheel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0023] Please refer to Figure 1 , Figure 2 , Figure 4 A vacuum tempering furnace for heat treatment includes a heat preservation shell 1, the lower end of the heat preservation shell 1 is fixedly installed with a support seat 2, the inside of the heat preservation shell 1 is fixedly installed with a furnace shell 3, the upper end of the furnace shell 3 is fixedly installed with a vacuum pipe 4, the outside of the heat preservation shell 1 is hingedly connected with a furnace cover 5, the heat preservation shell 1 is provided with a locking mechanism 6, the upper end of the heat preservation shell 1 is fixedly connected with a suction pipe 7, the inner wall of the suction pipe 7 is fixedly connected with a sealing ring 8 at the lower part, the inside of the sealing ring 8 is slidingly connected with a sealing ball 9, the upper end of the sealing ball 9 is fixedly connected with a pull rod 10, the upper end of the pull rod 10 is hingedly connected with a driving plate 11, the lower end of the driving plate 11 is hingedly connected with an expansion frame 12, the outside of the pull rod 10 is provided with a spring one 13.

[0024] Please refer to Figure 1 , Figure 2 , Figure 4 , the vacuum tube 4 and the heat preservation shell 1 are fixedly connected, the expansion frame 12 is hinged with the suction pipe 7, the sealing ring 8 is fixedly connected with the heat preservation shell 1, the inside of the heat preservation shell 1 can be vacuumized through the suction pipe 7, one end of the spring 13 is fixedly connected with the suction pipe 7, the other end of the spring 13 is fixedly connected with the sealing ball 9, the spring 13 can drive the sealing ball 9 to automatically reset through the elastic force, the inside of the suction pipe 7 is fixedly connected with the sealing pipe 14, the sealing pipe 14 is slidably connected with the pull rod 10, and the sealing pipe 14 can seal the connecting portion of the pull rod 10 and the suction pipe 7.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 The locking mechanism 6 comprises an internal thread frame 61, the outside of the heat preservation shell 1 is fixedly connected with the internal thread frame 61, the inside of the internal thread frame 61 is threadedly connected with a screw rod 63, the outside of the furnace cover 5 is fixedly connected with an inclined block 62, the lower end of the screw rod 63 is provided with an extrusion block 64 through a bearing, the upper end of the extrusion block 64 is fixedly connected with a guide rod 65, the upper end of the screw rod 63 is fixedly connected with a hand wheel 67, the screw rod 63 can drive the extrusion block 64 to move through the thread cooperation between the screw rod 63 and the internal thread frame 61, the inclined block 62 and the extrusion block 64 are in sliding connection, the inclined block 62 and the heat preservation shell 1 are in sliding connection, and the extrusion block 64 can drive the furnace cover 5 to be closed under pressure through the inclined block 62; the outside of the internal thread frame 61 is fixedly connected with a guide block 66, the guide block 66 and the guide rod 65 are in sliding connection, and the guide block 66 can guide the movement of the guide rod 65.

[0026] The specific implementation process of the utility model is as follows: in use, the furnace cover 5 is turned over to the direction close to the heat preservation shell 1, when the furnace cover 5 is turned over and reset, the inclined block 62 on the outside of the furnace cover 5 slides into the inside of the heat preservation shell 1, then the hand wheel 67 is rotated, the hand wheel 67 drives the screw rod 63 to rotate, the screw rod 63 moves downwards through the thread cooperation between the screw rod 63 and the internal thread frame 61 in the process of rotation, when the extrusion block 64 is on the outside of the inclined block 62, the furnace cover 5 can be limited through extrusion between inclined surfaces, so that the cover of the furnace cover 5 is more stable;

[0027] When the vacuum degree inside the heat preservation shell 1 needs to be adjusted, the driving plate 11 is pressed downward, the driving plate 11 drives the pull rod 10 to move upward through the support of the expansion frame 12, the pull rod 10 can drive the sealing ball 9 to move in the moving process, and the spring one 13 is compressed, when the sealing ball 9 is separated from the sealing ring 8, the sealing of the sealing ring 8 is released, then the gas can be sucked into the heat preservation shell 1, the heat preservation property of the heat preservation shell 1 can be reduced, so that the heat preservation performance of the heat preservation shell 1 can be adjusted.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum tempering furnace for heat treatment, comprising an insulating shell (1), characterized in that: The lower end of the heat preservation shell (1) is fixedly installed with a supporting seat (2), the inside of the heat preservation shell (1) is fixedly installed with a furnace shell (3), the upper end of the furnace shell (3) is fixedly installed with a vacuum tube (4), the outside of the heat preservation shell (1) is hingedly connected with a furnace cover (5), the heat preservation shell (1) is provided with a locking mechanism (6), the upper end of the heat preservation shell (1) is fixedly connected with a suction pipe (7), the inner wall lower part of the suction pipe (7) is fixedly connected with a sealing ring (8), the inside of the sealing ring (8) is slidingly connected with a sealing ball (9), the upper end of the sealing ball (9) is fixedly connected with a pull rod (10), the upper end of the pull rod (10) is hingedly connected with a driving plate (11), the lower end of the driving plate (11) is hingedly connected with an expansion frame (12), the outside of the pull rod (10) is provided with a spring (13).

2. The vacuum tempering furnace for heat treatment according to claim 1, characterized by: The vacuum tube (4) is fixedly connected with the heat preservation shell (1), the expansion frame (12) is hingedly connected with the suction pipe (7), and the sealing ring (8) is fixedly connected with the heat preservation shell (1).

3. The vacuum tempering furnace for heat treatment according to claim 1, characterized in that: One end of the spring (13) is fixedly connected with the suction pipe (7), and the other end of the spring (13) is fixedly connected with the sealing ball (9).

4. The vacuum tempering furnace for heat treatment according to claim 1, characterized in that: The inside of the suction pipe (7) is fixedly connected with a sealing pipe (14), and the sealing pipe (14) is slidingly connected with the pull rod (10).

5. The vacuum tempering furnace for heat treatment according to claim 1, characterized in that: The locking mechanism (6) comprises an internal thread frame (61), the outside of the heat preservation shell (1) is fixedly connected with the internal thread frame (61), the inside of the internal thread frame (61) is threadedly connected with a screw rod (63), the outside of the furnace cover (5) is fixedly connected with an inclined surface block (62), the lower end of the screw rod (63) is rotatably connected with an extrusion block (64), the upper end of the extrusion block (64) is fixedly connected with a guide rod (65), and the upper end of the screw rod (63) is fixedly connected with a hand wheel (67).

6. The vacuum tempering furnace for heat treatment according to claim 5, characterized in that: The inclined surface block (62) is slidingly connected with the inclined surface of the extrusion block (64), and the inclined surface block (62) is slidingly connected with the heat preservation shell (1).

7. The vacuum tempering furnace for heat treatment according to claim 5, characterized in that: The outside of the internal thread frame (61) is fixedly connected with a guide block (66), and the guide block (66) is slidingly connected with the guide rod (65).

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