Ground furnace structure and tempering ground furnace device

Abstract

The utility model belongs to the technical field of tempering furnaces, and particularly relates to a ground furnace structure and a tempering ground furnace device, which comprise a heat regeneration bin used for carrying out heat regeneration on quenched workpieces, a heat preservation cover arranged on a top opening of the heat regeneration bin and used for carrying out sealing and heat preservation on the heat regeneration bin, the heat regeneration bin and the heat preservation cover are round, a lantern ring used for being connected with the heat regeneration bin in a sleeved mode is arranged on the side, facing the heat regeneration bin, of the heat preservation cover, and a protruding sealing ring is arranged at the bottom of the lantern ring, so that through the arrangement of the top groove and the sealing ring, when the heat preservation cover is in butt joint with the heat regeneration bin, a user can align the sealing ring to the top groove, and then the heat preservation cover is continuously put down; through the arrangement, a gap between the heat preservation cover and the heat regeneration bin can be filled, meanwhile, the situation that sliding deviation occurs between the heat preservation cover and the heat regeneration bin can be avoided, and therefore close fit between the sealing ring and the top groove is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tempering furnaces, and particularly relates to a floor furnace structure and a tempering floor furnace device. Background Technique

[0002] After the workpiece is quenched in quenching oil, it needs to be tempered. The tempering furnace is used for tempering general metal machine parts in the air and for heat treatment such as quenching, annealing, and aging of light alloy machine parts such as aluminum alloy die castings, pistons, and aluminum plates.

[0003] In the prior art, during low-temperature (<400 °C) tempering, in order to maintain the temperature inside the tempering furnace, a heat preservation cover is needed to seal the tempering furnace. However, the gap between the heat preservation cover and the tempering furnace may cause heat loss, which in turn affects the stability of the temperature inside the furnace. Due to insufficient sealing, the environment inside the furnace cannot be completely enclosed, resulting in temperature fluctuations inside the furnace. This temperature instability may affect the accuracy of the tempering process and thus the heat treatment quality of the material.

[0004] The above information disclosed in the background art section is only used to enhance the understanding of the background art of the technology described in this article. Therefore, the background art may contain certain information that is not prior art known to those skilled in the art in this country. Summary of the Utility Model

[0005] In view of this, the utility model provides a floor furnace structure and a tempering floor furnace device. The purpose is that through the settings of the top groove and the sealing ring, when the heat preservation cover is docked with the heat recovery chamber, the user can align the sealing ring with the top groove, and then continuously lower the heat preservation cover, so that the sealing ring can be snapped into the top groove. Through this setting, the gap between the heat preservation cover and the heat recovery chamber can be filled, and at the same time, the situation of sliding and offset between the heat preservation cover and the heat recovery chamber can be avoided, so as to achieve a tight fit between the sealing ring and the top groove; through the settings of the convex block and the positioning groove, when the heat preservation cover is pressed down towards the heat recovery chamber, the user can observe whether the heat preservation cover is aligned with the heat recovery chamber through the relative positions of the positioning groove and the convex block. When the positioning groove and the convex block are in the same straight line position, as the heat preservation cover is continuously lowered, the positioning groove will clamp the convex block. Through this setting, it enables the user to more intuitively adjust the lowering path of the heat preservation cover.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A floor furnace structure, including a heat recovery chamber for reheating the quenched workpiece;

[0008] A heat preservation cover is arranged on the top opening of the heat recovery chamber for sealing and heat preservation of the heat recovery chamber;

[0009] The regenerative chamber and the heat preservation cover are both circular. Among them, on the side of the heat preservation cover facing the regenerative chamber, there is a collar for sleeving the regenerative chamber. At the bottom of the collar, there is a protruding sealing ring, and on the side of the regenerative chamber facing the collar, there is a top groove corresponding to the sealing ring.

[0010] As a preferred technical solution, there are convex blocks on the outer wall of the regenerative chamber, and positioning grooves corresponding to the convex blocks are provided on the collar.

[0011] Furthermore, at the center of the circle of the regenerative chamber, there is a heating layer for heating the workpiece, and a clamping ring for clamping the workpiece is annularly arranged at the edge of the heating layer.

[0012] Furthermore, between the clamping ring and the inner wall of the regenerative chamber, there is a support member, and the support member is a cylinder connected between the outer wall of the clamping ring and the inner wall of the regenerative chamber.

[0013] Furthermore, the support member is a rectangular flat block, and a clamping groove for clamping the support member is provided on the outer wall at one end of the clamping ring.

[0014] Furthermore, at one end of the heat preservation cover away from the regenerative chamber, there is a hanging ring for connecting with an external motor.

[0015] A tempering floor furnace device includes a furnace body and a floor furnace structure. Among them, the regenerative chamber is recessed at the top of the furnace body, and resistance wires for supplying heat to the heating layer are provided in the furnace body.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] Through the setting of the top groove and the sealing ring, when the heat preservation cover is docked with the regenerative chamber, the user can align the sealing ring with the top groove, and then continuously lower the heat preservation cover, so that the sealing ring can be clamped into the top groove. Through this setting, the gap between the heat preservation cover and the regenerative chamber can be filled, and at the same time, the situation of sliding and offset between the heat preservation cover and the regenerative chamber can be avoided, thereby realizing the tight fit between the sealing ring and the top groove.

[0018] Through the setting of the convex block and the positioning groove, when the heat preservation cover is pressed down towards the regenerative chamber, the user can observe whether the heat preservation cover is aligned with the regenerative chamber through the relative position of the positioning groove and the convex block. When the positioning groove and the convex block are in the same straight line position, as the heat preservation cover is continuously lowered, the positioning groove will clamp the convex block. Through this setting, it enables the user to more intuitively adjust the lowering path of the heat preservation cover. Description of the Drawings

[0019] The present utility model will be described by way of examples and with reference to the accompanying drawings, where:

[0020] Figure 1It is a schematic structural diagram of a ground furnace structure and a tempering ground furnace device provided by the present utility model;

[0021] Figure 2 It is an unfolded structural schematic diagram of a flange provided by the present utility model;

[0022] Figure 3 It is a schematic connection structure diagram of a grading blade and a flange provided by the present utility model.

[0023] Furnace body - 1; Heat preservation cover - 2; Suspension ring - 3; Regeneration chamber - 4; Top groove - 5; Convex block - 6; Clamping ring - 7; Support member - 8; Heating layer - 9; Collar - 10; Positioning groove - 11; Sealing ring - 12. Detailed implementation manners

[0024] Next, with reference to the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] In the prior art, during low-temperature (<400 °C) tempering treatment, in order to maintain a constant temperature in the tempering furnace, it is usually necessary to use a heat preservation cover to seal the furnace body. However, the gap between the heat preservation cover and the tempering furnace may cause heat dissipation, which will interfere with the temperature stability in the tempering furnace. Due to the unsatisfactory sealing effect, the environment in the tempering furnace cannot be completely enclosed, resulting in temperature fluctuations. This temperature instability may have a negative impact on the accuracy of the tempering process, and thus affect the quality of material heat treatment.

[0027] Therefore, in order to solve the problem that there may be gaps between the existing heat preservation cover and the tempering furnace, resulting in unstable furnace temperature, and to achieve the functions of improving the sealing performance of the tempering furnace and maintaining stable furnace temperature, the present utility model discloses a ground furnace structure. Refer to Figure 2 - Figure 3 , which includes a regeneration chamber 4 for reheating the quenched workpiece, and a heat preservation cover 2 provided on the top opening of the regeneration chamber 4 for sealing and heat preservation of the regeneration chamber 4. Both the regeneration chamber 4 and the heat preservation cover 2 are circular. Among them, a collar 10 for sleeving the regeneration chamber 4 is provided on the side of the heat preservation cover 2 facing the regeneration chamber 4. A raised sealing ring 12 is provided at the bottom of the collar 10, and a top groove 5 corresponding to the sealing ring 12 is provided on the side of the regeneration chamber 4 facing the collar 10;

[0028] In this embodiment, when the heat preservation cover 2 is docked with the regenerative chamber 4, the user can align the sealing ring 12 with the top groove 5, and then continuously lower the heat preservation cover 2 so that the sealing ring 12 can be snapped into the top groove 5. Through this setting, the gap between the heat preservation cover 2 and the regenerative chamber 4 can be filled, and at the same time, the situation of sliding and offset between the heat preservation cover 2 and the regenerative chamber 4 can be avoided, so as to achieve a tight fit between the sealing ring 12 and the top groove 5;

[0029] In one embodiment, the sealing ring 12 is made of a material that is resistant to high temperature and wear, such as stainless steel, to ensure good sealing performance in a high-temperature environment. The inner wall of the top groove 5 is designed to match the shape of the sealing ring 12 to ensure that the sealing ring 12 can be evenly stressed when snapped in and avoid damage to the sealing ring caused by local stress concentration;

[0030] In addition, in order to further improve the sealing performance between the heat preservation cover 2 and the regenerative chamber 4 and enable the heat preservation cover 2 and the regenerative chamber 4 to be quickly aligned, a convex block 6 is provided on the outer wall of the regenerative chamber 4, and a positioning groove 11 corresponding to the convex block 6 is provided on the collar 10. When the heat preservation cover 2 is pressed down towards the regenerative chamber 4, the user can observe whether the heat preservation cover 2 is aligned with the regenerative chamber 4 through the relative position of the positioning groove 11 and the convex block 6. When the positioning groove 11 and the convex block 6 are in the same straight line position, as the heat preservation cover 2 is continuously lowered, the positioning groove 11 will clamp the convex block 6, and at the same time, the sealing ring 12 will be snapped into the top groove 5. Through this setting, the user can more intuitively adjust the lowering path of the heat preservation cover 2. Secondly, since the convex block 6 and the positioning groove 11 are engaged with each other, it can play a positioning effect on the heat preservation cover 2 to avoid the heat preservation cover 2 from rotating on the regenerative chamber 4.

[0031] In this embodiment, a lifting ring 3 for connecting with an external motor is provided at one end of the heat preservation cover 2 away from the regenerative chamber 4. Through this setting, the heat preservation cover 2 can be easily lifted or lowered, realizing the quick loading and unloading of the heat preservation cover 2.

[0032] Embodiment Two

[0033] On the basis of Embodiment One, in order to enable the workpieces in the regenerative chamber 4 to be evenly heated, refer to Figure 2 , the present utility model further includes a clamping ring 7 for clamping the workpiece. Specifically, a heating layer 9 for heating the workpiece is provided at the center of the regenerative chamber 4, and a clamping ring 7 for clamping the workpiece is provided around the edge of the heating layer 9;

[0034] In this embodiment, through the setting of the clamping ring 7, the workpiece can be restricted within the heating layer 9 to ensure the stability of the workpiece during the heating process and avoid uneven heating caused by the movement of the workpiece.

[0035] In this embodiment, in order to improve the stability of the clamping ring 7 in the regenerative chamber 4, a support member 8 is provided between the clamping ring 7 and the inner wall of the regenerative chamber 4. The support member 8 is a cylinder welded between the outer wall of the clamping ring 7 and the inner wall of the regenerative chamber 4. By providing the support member 8, the thermal stress generated by the clamping ring 7 during the heating process can be effectively dispersed, thereby preventing the clamping ring 7 from deforming due to thermal expansion and ensuring that it can still maintain a good clamping effect in a high-temperature environment;

[0036] In one embodiment, in order to facilitate the replacement of the deformed clamping ring 7, the support member 8 is a rectangular flat block, and a clamping groove for clamping the support member 8 is formed on the outer wall of one end of the clamping ring 7. With this arrangement, when the user replaces the clamping ring 7, they only need to directly lift the clamping ring 7 upward without using other tools for disassembly. When a new clamping ring 7 needs to be installed, they only need to align the clamping groove with the support member 8 and then press the clamping ring 7 downward to complete the installation.

[0037] In addition, in order to further improve the heating uniformity of the workpiece, the heating layer 9 adopts a heating method with multi-point uniform distribution to ensure that heat can be evenly transferred to the workpiece. The heating element of the heating layer 9 can be a resistance wire or other materials suitable for high-temperature heating.

[0038] Embodiment Three

[0039] Based on any one of Embodiments 1 to 2, referring to Figure 1 , the present utility model further provides a tempering furnace device including the above-mentioned floor furnace structure. Specifically, it includes a furnace body 1 and the floor furnace structure. Among them, the regenerative chamber 4 is recessed at the top of the furnace body 1, and a resistance wire for supplying heat to the heating layer 9 is provided in the furnace body 1;

[0040] In this embodiment, in combination with Embodiments 1 to 2, the working principle of the tempering furnace device is as follows: First, connect the lifting ring 3 to an external crane, lift the heat preservation cover 2 by the external crane and place it on the top opening of the regenerative chamber 4. Then, place the workpiece after quenching treatment in the regenerative chamber 4, and lower the heat preservation cover 2 towards the regenerative chamber 4 by the external crane. At this time, through the cooperation of the collar 10 and the sealing ring 12, it can be ensured that there is no gap between the heat preservation cover 2 and the regenerative chamber 4, thereby achieving a good sealing effect. In order to ensure that the sealing ring 12 is clamped into the top groove 5, the user can align the positioning groove 11 with the convex block 6 and clamp them to achieve the stable docking of the heat preservation cover 2 and the regenerative chamber 4;

[0041] In the regenerative chamber 4, the clamping ring 7 is fixed to the edge of the heating layer 9 through the support member 8 to ensure the stability of the workpiece during the heating process. The heating layer 9 is evenly heated by a resistance wire or other heating elements to ensure that the workpiece is evenly heated. During the heating process, the resistance wire in the furnace body 1 provides continuous heat for the heating layer 9, so that the workpiece is evenly heated in the regenerative chamber 4;

[0042] After the workpiece is heated to the required temperature, the heat preservation cover 2 can be lifted again by an external crane to take out the tempered workpiece. The whole tempering process is carried out in a well-sealed environment, ensuring the temperature stability and thus improving the quality of material heat treatment.

[0043] In summary, the tempering pit furnace device provided by the present utility model realizes the stable control of the temperature in the furnace by improving the furnace structure, improves the accuracy of the tempering process, and ensures the quality of material heat treatment.

[0044] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floor furnace structure, characterized in that: include: A heat recovery chamber (4), used for recovering the heat of the workpiece after quenching; A heat-insulating cover (2) is arranged on the top opening of the heat-recovery bin (4) and is used to seal and insulate the heat-recovery bin (4); The heat recovery chamber (4) and the heat preservation cover (2) are both circular, wherein a sleeve ring (10) for sleeve-connecting the heat recovery chamber (4) is provided on the side of the heat preservation cover (2) facing the heat recovery chamber (4), a raised sealing ring (12) is provided at the bottom of the sleeve ring (10), and a top groove (5) corresponding to the sealing ring (12) is provided on the side of the heat recovery chamber (4) facing the sleeve ring (10).

2. The floor furnace structure according to claim 1, characterized in that: A protrusion (6) is provided on the outer wall of the heat recovery chamber (4), and a positioning groove (11) corresponding to the protrusion (6) is provided on the collar (10).

3. The floor furnace structure according to claim 1, characterized in that: A heating layer (9) for heating the workpiece is provided at the center of the heat recovery chamber (4), and a clamping ring (7) for clamping the workpiece is provided at the edge of the heating layer (9).

4. The floor furnace structure according to claim 3, characterized in that: A support member (8) is provided between the clamping ring (7) and the inner wall of the heat recovery chamber (4); the support member (8) is a cylinder connected between the outer wall of the clamping ring (7) and the inner wall of the heat recovery chamber (4).

5. The floor furnace structure according to claim 4, characterized in that: The support member (8) is a rectangular flat block, and a slot for clamping the support member (8) is provided on the outer wall of one end of the clamp ring (7).

6. The floor furnace structure according to claim 1, characterized in that: The end of the heat-insulating cover (2) away from the heat recovery chamber (4) is provided with a lifting ring (3) for connecting to an external motor.

7. A tempering furnace device, characterized in that: It comprises a furnace body (1) and a floor furnace structure as claimed in any one of claims 1 to 6, wherein the heat recovery chamber (4) is recessed in the top of the furnace body (1), and a resistance wire for supplying heat to a heating layer (9) is arranged inside the furnace body (1).

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