Furnace door device and heating furnace

Abstract

The utility model relates to a furnace door device of a heating furnace, which is used for the heating furnace and is characterized in that the furnace door device comprises a furnace door; the furnace door driving device is suitable for driving the furnace door to transversely shift relative to an opening of a furnace body of the heating furnace so as to open and close the furnace body of the heating furnace, and the furnace door driving device is designed to drive the furnace door to transversely shift relative to the opening of the furnace body of the heating furnace. When the furnace door is opened, the furnace door can firstly move in the direction away from the furnace body so as to be separated from the furnace body, when the furnace door is about to be closed, the furnace door can move towards the furnace body so as to close the furnace body, and the self weight of the furnace door plays a role in enabling the furnace door to abut against the opening of the furnace body.

Description

Technical Field

[0001] The utility model relates to a furnace door device and a heating furnace. Background Art

[0002] A heating furnace is a device (industrial furnace) used in the metallurgical industry to heat materials or workpieces (usually metals) to rolling and forging temperatures. At present, the furnace door of a heating furnace generally uses a furnace door slide rail to move vertically up and down along the guide rail column of the furnace body to open and close. Due to the high temperature radiation when the heating furnace is working, the mechanical structure of the furnace door and the furnace body will be deformed. In the above-mentioned commonly used mechanical structure of the furnace door moving vertically up and down, if the furnace door is opened and closed when the heating furnace is in a high temperature state, additional mechanical friction loss will be generated between the furnace door and the furnace body, and the gas atmosphere sealing performance of the furnace body when the furnace door is closed will be damaged. In this case, the service life of the furnace door will be greatly shortened. Once the furnace door is damaged, the working performance of the heating furnace will be reduced, and it can cause economic losses such as inability to feed, unload, and stop the furnace, and even cause serious personal injury accidents. Summary of the invention

[0003] The utility model provides a furnace door device and a heating furnace, which are used to reduce or avoid the additional friction loss between the furnace door and the furnace body caused by mechanical deformation due to high temperature radiation.

[0004] The first aspect of the utility model provides a furnace door device for a heating furnace, wherein the furnace door device comprises: a furnace door; a furnace door driving device, wherein the furnace door driving device is suitable for driving the furnace door to shift laterally relative to a furnace body opening of the heating furnace so as to open and close the furnace body of the heating furnace, wherein the furnace door driving device is designed to enable the furnace door to first move in a direction away from the furnace body to break away from contact with the furnace body when the furnace door is opened, and to enable the furnace door to move toward the furnace body to close the furnace body when the furnace door is about to be closed, and the dead weight of the furnace door serves to press the furnace door against the furnace body opening.

[0005] It should be understood that the furnace door can be displaced laterally in the up-down direction relative to the furnace body opening of the heating furnace, or can be displaced laterally in the left-right direction to expose or close the furnace body opening. The "lateral displacement" here does not only include the up-down movement of the furnace door in the traditional sense, but it is also feasible to design the furnace door to be displaced in the left-right direction to expose or close the furnace body opening. In fact, the lateral displacement in any direction relative to the furnace body opening of the heating furnace is feasible in principle.

[0006] According to a preferred extension of the utility model, the furnace door driving device includes a matching mechanism for matching the furnace door with the furnace body, and the matching mechanism includes: a guide rail, which is arranged on the furnace body; a moving member, which is coupled to the guide rail and is suitable for reciprocating along the guide rail; and a connecting rod, whose two ends are respectively connected to the furnace door and the moving member.

[0007] According to a preferred embodiment of the furnace door device of the present invention, both ends of the connecting rod are respectively connected to the furnace door and the moving part in a pivotable manner, wherein the furnace door drive device is designed to make the furnace door pivot around the connecting rod and break away from contact with the furnace body when the furnace door is opened.

[0008] Thus, through the above-mentioned matching mechanism, the furnace door can close the furnace body in the closed state and be out of contact with the furnace body in the open state. Exemplarily, the opening process of the furnace door can include two steps: first, the furnace door is driven to move in a direction away from the furnace body, driving the connecting rod to pivot so that the furnace door is out of contact with the furnace body; then, the furnace door is driven to move in a direction roughly parallel to the guide rail to open the corresponding area on the furnace body that was originally blocked by the furnace door. In this way, in the latter step, the furnace door moves together with the moving part through the connecting rod. Since the furnace door has been separated from the furnace body and there is no contact between the two, there will be no friction between the furnace door and the furnace body. Therefore, the mechanical friction loss between the furnace door and the furnace body in the prior art can be avoided, and in particular, the furnace door body is no longer damaged. Therefore, it is possible to effectively improve the service life of the furnace door, reduce the maintenance workload, reduce the maintenance cost, and shorten the maintenance time.

[0009] Accordingly, it is preferred that the furnace door drive device is designed to cause the furnace door to pivot around the connecting rod and move toward the furnace body to close the furnace body when the furnace door is about to be closed, or alternatively, no action is applied when the furnace door is about to be closed and the furnace door relies on its own weight to pivot around the connecting rod and move toward the furnace body to close the furnace body.

[0010] According to the utility model, by adding a connecting rod mechanism structure between the moving part (such as a slide rail) and the furnace door, the furnace door can generate a nearly quadrilateral motion trajectory for the guide rail (guide rail column) of the furnace body. There is no direct mechanical contact between the two, so mechanical friction damage between the furnace door and the furnace body is effectively avoided. And through the deadweight of the furnace door, the gas atmosphere sealing performance of the furnace body is effectively guaranteed when the furnace door is closed. Thereby effectively improving the service life of the furnace door, reducing the maintenance workload, reducing the maintenance cost, and shortening the maintenance time.

[0011] According to another preferred embodiment of the furnace door device of the utility model, both ends of the connecting rod are fixedly connected to the furnace door and the moving part respectively, wherein the guide rail is designed so that the moving part has a trajectory that can first move away from the furnace body when the furnace door is opened, so that the furnace door can move along the guide rail under the action of the furnace door driving device and break away from the contact with the furnace body.

[0012] Accordingly, preferably, the furnace door drive device is designed to move the furnace door along the trajectory of the guide rail toward the furnace body to close the furnace body when the furnace door is about to be closed, or to move the furnace door along the trajectory of the guide rail toward the furnace body to close the furnace body without applying any action when the furnace door is about to be closed and rely on its own weight to move the furnace door along the trajectory of the guide rail toward the furnace body to close the furnace body.

[0013] It should be understood that the fixed connection of the two ends of the connecting rod with the furnace door and the moving member means that the connecting rod itself can also be constructed as an integral part with the furnace door or the moving member. In the case where connecting rods are arranged on both sides of the furnace door, it can also be considered that the connecting rod on one side is constructed as an integral part with the furnace door, and the connecting rod on the other side is constructed as an integral part with the moving member.

[0014] In the above technical solution, the guide rail comprises a front guide rail section which is first passed by the moving part when the furnace door is opened and which extends away from the furnace body, and a rear guide rail section which is subsequently passed by the furnace door and which extends in a direction laterally offset relative to the furnace body opening of the heating furnace. The front guide rail section and the rear guide rail section form a bending angle with respect to each other, and the angle is preferably designed so that the furnace door needs to overcome its own weight to be able to pass through the front guide rail section.

[0015] Alternatively, the two guide rail sections may also transition from the preceding guide rail section to the succeeding guide rail section in an arc shape.

[0016] Optionally, the matching mechanism further includes a stopper, which is suitable for limiting the lowest position that the moving member can reach when moving along the guide rail.

[0017] Thus, the range of movement of the moving member on the guide rail is limited, and the moving member (and the furnace door connected by the connecting rod) can be prevented from moving to an undesirable position. For example, it is undesirable that the moving member (and the furnace door) is too low or too high relative to the ground. For example, it is undesirable that the moving member (and the furnace door) continues to move uncontrolled.

[0018] Thus, when the furnace door loses its external holding force, the furnace door will not fall, because the moving part is restrained at the stopper, thereby being able to "pull" the furnace door that is about to fall. In particular, when the furnace door is in a closed state, the stopper can play a supporting role.

[0019] The furnace door is naturally pressed against the corresponding area of ​​the furnace body under the action of its own weight, which can effectively ensure the gas atmosphere sealing performance of the furnace body.

[0020] A second aspect of the present invention provides a heating furnace, wherein the heating furnace has a furnace door device as described in various implementation forms of the first aspect of the present invention.

[0021] According to the heating furnace provided by the utility model, when the furnace door is opened, the furnace door is separated from the furnace body, and there is no contact between the two, so there is no friction, so the mechanical friction loss between the furnace door and the furnace body in the prior art is avoided. Furthermore, the service life of the furnace door can be effectively extended, the maintenance workload can be reduced, the maintenance cost can be reduced, and the maintenance time can be shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1a A part of a heating furnace according to the utility model is shown in a side view, which includes a furnace door device according to the utility model, wherein the furnace door is in a closed state;

[0023] Figure 1b A part of a heating furnace according to the utility model is shown in a side view, which includes a furnace door device according to the utility model, wherein the furnace door is in an open state;

[0024] Figure 2a A part of a heating furnace according to the utility model is shown in a top view, which includes a furnace door device according to the utility model, wherein the furnace door is in a closed state;

[0025] Figure 2b A part of a heating furnace according to the present invention is shown in a top view, and the furnace door includes a furnace door device according to the present invention, wherein the furnace door is in an open state. DETAILED DESCRIPTION

[0026] The present invention is described in detail below using embodiments in combination with the accompanying drawings. It should be noted that the accompanying drawings are only used for illustrative purposes and should not be construed as limiting the present invention.

[0027] Figure 1a A part of a heating furnace according to the present invention is schematically shown in a side view, which includes a furnace door device according to the present invention, wherein the furnace door 1 is in a closed state.

[0028] The furnace door device includes a furnace door 1, and the furnace door device uses the furnace door 1 to close the furnace body of the heating furnace (not shown, the furnace body is Figure 1a exemplarily located on the right side of the furnace door 1). Figure 1a As shown, when the furnace door 1 is in a closed state, the furnace door 1 abuts against the furnace body. The furnace door 1 can be constructed in a known manner to be suitable for closing the furnace body.

[0029] In some embodiments, the furnace door 1 of the heating furnace is placed perpendicular to the horizontal plane, that is, the furnace door 1 is upright. In other embodiments, the furnace door 1 may not be upright, for example, it can be moved horizontally left and right.

[0030] The furnace door device comprises a matching mechanism, through which the furnace door 1 matches with the furnace body, wherein the matching mechanism comprises a guide rail 21 , a moving part 22 and a connecting rod 23 .

[0031] The guide rail 21 is arranged on the furnace body, and in particular, is fixed on the furnace body. In some embodiments, for this purpose, a guide rail column is constructed on the furnace body, and the guide rail 21 is provided by the guide rail column. Exemplarily, the guide rail column comprises a column made of high-strength steel, which can support and fix the guide rail 21 and has good mechanical reliability. In some embodiments, the guide rail 21 and / or the guide rail column extend in a direction perpendicular to the horizontal plane, and in particular, also parallel to the height direction of the furnace door 1. In some other embodiments, the guide rail 21 may also not be parallel to the height direction of the furnace door 1.

[0032] The moving member 22 is coupled to the guide rail 21 and is adapted to reciprocate along the guide rail 21. The moving member 22 may be, for example, a slide rail, a slider, etc. The moving member 22 may have sliding friction and / or rolling friction with the guide rail 21. In some embodiments, the moving member 22, for example, a slide rail, moves on the guide rail 21 via rollers.

[0033] One end of the connecting rod 23 is pivotally connected to the furnace door 1, and the other end of the connecting rod 23 is pivotally connected to the moving member 22. The connecting rod 23 can be pivotally connected by known means. The connecting rod 23 can have one or more, for example, Figure 1a In the figure, it can be seen that the upper connecting rod connected to the upper part of the furnace door 1 and the lower connecting rod connected to the lower part of the furnace door 1, multiple connecting rods 23 help to disperse the effect of force.

[0034] like Figure 1a As shown, the connecting rod 23 is inclined to the guide rail 21 when the furnace door 1 closes the furnace body, so that the furnace door 1 can move toward a direction away from the furnace body to break away from the contact with the furnace body.

[0035] Please refer to Figure 1b , Figure 1b A part of a heating furnace according to the present invention is shown in a side view, which includes a furnace door device according to the present invention, wherein the furnace door 1 is in an open state.

[0036] like Figure 1b As shown, the furnace door 1 has been separated from the contact with the furnace body, and a distance is pulled between the furnace door 1 and the furnace body. This is caused by the connecting rod pivoting through the furnace door driving device (not shown).

[0037] For example, Figure 1b As shown, after the furnace door 1 is out of contact with the furnace body, it can move to a position where the connecting rod 23 is perpendicular to the guide rail 21. Keeping the furnace door 1 as far away from the furnace body as possible can advantageously avoid undesired contact between the furnace door 1 and the furnace body.

[0038] See also Figure 1a and Figure 1bFor example, the furnace door 1 is driven to be out of contact with the furnace body first, and the furnace door 1 has both a translation component perpendicular to the guide rail 21 and a translation component parallel to the guide rail 21. The end of the connecting rod 23 connected to the furnace door 1 moves with the movement of the furnace door 1, and the moving member 22 does not move temporarily. The connecting rod 23 rotates with the other end connected to the moving member 22 as a pivot. It can be understood that the furnace door 1 can also have a rotational movement in this process.

[0039] After that, the furnace door 1 can be driven to move in a direction substantially parallel to the guide rail 21 to open the corresponding area on the furnace body that was originally blocked by the furnace door, thereby allowing materials to enter and exit. In this process, since the furnace door 1 and the furnace body are no longer in contact, there is no mechanical friction between the two, thereby reducing or avoiding friction loss, and effectively improving the service life of the furnace door 1.

[0040] Please also refer to Figure 2a and Figure 2b , Figure 2a A part of a heating furnace according to the utility model is shown in a top view, which includes a furnace door device according to the utility model, wherein the furnace door 1 is in a closed state; Figure 2b A part of a heating furnace according to the present invention is shown in a top view, which includes a furnace door device according to the present invention, wherein the furnace door 1 is in an open state.

[0041] like Figure 2b As shown, the furnace door 1 is out of contact with the furnace body when in the open state, and a distance is pulled between the furnace door 1 and the furnace body. In the open state, the furnace door 1 can be further driven to move in a direction roughly parallel to the guide rail 21 to open the corresponding area on the furnace body that was originally blocked by the furnace door. During this process, there will be no mechanical friction between the two, thereby reducing or avoiding friction loss, and can effectively improve the service life of the furnace door 1.

[0042] Exemplarily, to complete a complete process of opening and subsequently closing the furnace door, the furnace door 1 will generate a nearly quadrilateral motion trajectory relative to the guide rails 21 or guide rail columns of the furnace body.

[0043] In some embodiments, see Figure 2a and Figure 2b The guide rail 21 includes a first guide rail and a second guide rail respectively arranged at two sides of the furnace body corresponding to the furnace door, the moving member 22 includes a first moving member and a second moving member respectively coupled to the first guide rail and the second guide rail, and the connecting rod 23 includes a first connecting rod and a second connecting rod respectively connected to the first moving member and the second moving member. In this way, it is beneficial to disperse the effect of force.

[0044] In some embodiments, see Figure 1a and Figure 1bThe matching mechanism of the furnace door device further includes a stopper 24, which is suitable for stopping the movement of the moving member 22 along the guide rail 21, thereby limiting the movement range of the moving member 22. Exemplarily, the stopper 24 is configured on the guide rail 21, especially on the guide rail column, and / or configured at the end of the guide rail 21. Exemplarily, the stopper 24 can be a stopper.

[0045] In some embodiments, the stopper 24 defines the lowest position of the moving member 22. For example, the stopper 24 is configured at the lower end of the guide rail 21. In other embodiments, a stopper defining the highest position may also be included.

[0046] See also Figure 1a In some embodiments, when the furnace door 1 closes the furnace body, the moving member 22 abuts against the stopper 24 under the action of gravity. It is particularly advantageous that the furnace door 1 can naturally press the furnace body under its own weight, thereby facilitating the gas atmosphere sealing performance of the heating furnace.

[0047] According to another embodiment of the furnace door device of the utility model, which is not shown, the connecting rod 23 between the furnace door 1 and the moving member 22 can also be designed to be fixed relative to the furnace door 1 and the moving member 22. At this time, the first guide rail section that the furnace door passes through first when it is opened allows the furnace door 1 to move away from the furnace body, while the second guide rail section guides the furnace door 1 to move parallel to the furnace body opening. In this way, in the first guide rail section, the furnace door 1 is out of contact with the furnace body, and in the second guide rail section, the furnace door 1 can open the furnace body opening without friction and contact with the furnace body. In any case, when the furnace door 1 is closed, after the moving member returns to the first guide rail section from the second guide rail section, it has a motion component along the guide rail section against the furnace body opening, and finally against the furnace body opening under the action of its own weight.

[0048] The above describes some embodiments of the present invention, but the spirit and scope of the present invention are not limited to the specific contents disclosed herein. Those skilled in the art can make more implementation methods and applications based on the teachings of the present invention, and these implementation methods and applications are within the spirit and scope of the present invention. The spirit and scope of the present invention are not limited by the specific embodiments, but by the claims.

Claims

1. A furnace door device for a heating furnace, characterized in that: The furnace door device comprises: Furnace door; a furnace door driving device, wherein the furnace door driving device is adapted to drive the furnace door to shift laterally relative to the furnace body opening of the heating furnace so as to open and close the furnace body of the heating furnace, Among them, the furnace door driving device is designed to enable the furnace door to first move in a direction away from the furnace body to break contact with the furnace body when the furnace door is opened, and to move the furnace door toward the furnace body to close the furnace body when the furnace door is about to be closed, and the self-weight of the furnace door serves to press the furnace door against the furnace body opening.

2. The furnace door device according to claim 1, characterized in that: The furnace door driving device includes a matching mechanism for matching the furnace door with the furnace body, and the matching mechanism includes: A guide rail, wherein the guide rail is arranged on the furnace body; a moving member, the moving member being coupled to the guide rail and being adapted to reciprocate along the guide rail; A connecting rod, two ends of which are respectively connected to the furnace door and the moving part.

3. The furnace door device according to claim 2, characterized in that: The two ends of the connecting rod are respectively connected to the furnace door and the moving member in a pivotable manner, wherein the furnace door driving device is designed to make the furnace door pivot around the connecting rod and break away from the contact with the furnace body when the furnace door is opened.

4. The furnace door device according to claim 3, characterized in that: The furnace door driving device is designed to make the furnace door pivot about the connecting rod and move toward the furnace body to close the furnace body when the furnace door is about to be closed, or to make the furnace door pivot about the connecting rod and move toward the furnace body to close the furnace body without applying any action when the furnace door is about to be closed and rely on its own weight to move toward the furnace body to close the furnace body.

5. The furnace door device according to claim 2, characterized in that: The two ends of the connecting rod are fixedly connected to the furnace door and the moving part respectively, wherein the guide rail is designed to enable the moving part to have a trajectory that can first move away from the furnace body when the furnace door is opened, so that the furnace door can move along the guide rail under the action of the furnace door driving device and break away from the contact with the furnace body.

6. The furnace door device according to claim 5, characterized in that: The furnace door driving device is designed to move the furnace door along the trajectory of the guide rail toward the furnace body to close the furnace body when the furnace door is about to be closed, or to not apply any action when the furnace door is about to be closed and allow the furnace door to move along the trajectory of the guide rail toward the furnace body to close the furnace body by relying on its own weight.

7. The furnace door device according to claim 6, characterized in that: The guide rail is designed so that a front guide rail section that first passes through when the furnace door is opened and extends away from the furnace body and a rear guide rail section that passes through the furnace door laterally and extends in a direction offset laterally relative to the furnace body opening of the heating furnace form a bending angle with respect to each other.

8. The furnace door device according to claim 6, characterized in that: The guide rail is designed so that a front guide rail section that is passed first when the furnace door is opened and extends away from the furnace body transitions in an arc shape to a rear guide rail section that is passed after the furnace door and extends in a direction transversely offset relative to the furnace body opening of the heating furnace.

9. The furnace door device according to any one of claims 2 to 6, characterized in that: The matching mechanism further includes a stopper, which is suitable for limiting the lowest position that the moving member can reach when moving along the guide rail.

10. A heating furnace, characterized in that: The heating furnace has the furnace door device according to any one of claims 1 to 9.

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