Furnace door and heating furnace

Abstract

The utility model provides a furnace door and a heating furnace. The sealing ring is arranged on one surface of the door cover; the pressing pieces are detachably connected to the door cover, and the pressing pieces are distributed in the circumferential direction of the sealing ring; the pressing piece and the door cover clamp the sealing ring in the axial direction of the sealing ring. When the sealing ring needs to be detached, the pressing piece can be detached from the door cover, and the sealing ring can be easily taken out from the position between the baffle and the door cover. When the sealing ring needs to be installed, the sealing ring can be firstly placed on the door cover, then the pressing piece is installed on the door cover, and the sealing ring is clamped and fixed through the pressing piece and the door cover. Therefore, the dismounting difficulty of the sealing ring is reduced, and the sealing ring can be conveniently replaced by an operator, so that the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of solar cell manufacturing, and in particular to a furnace door and a heating furnace. Background Art

[0002] The heating furnace is one of the important process equipment in the solar cell manufacturing production line. During the battery production process, photovoltaic materials or semiconductors usually need to be placed in the heating furnace to react under certain temperature and pressure conditions.

[0003] In the related art, the heating furnace includes a furnace body and a furnace door, and the furnace door is provided with a sealing ring. In actual operation, the furnace door closes the furnace opening of the furnace body and is sealed with the furnace body through the sealing ring to prevent the process gas inside the furnace body from leaking out of the furnace body. As the working time of the furnace door in a high temperature environment increases, the sealing performance of the sealing ring will change, and the sealing ring needs to be replaced. However, the disassembly and assembly of the sealing ring in the above technology is relatively troublesome, which affects the work efficiency. Utility Model Content

[0004] In view of the above, it is necessary to provide a furnace door and a heating furnace, which have the technical effects of convenient disassembly and assembly of the sealing ring and improved work efficiency.

[0005] The first aspect of the present application provides a furnace door, comprising: a door cover; a sealing ring, which is arranged on one side of the door cover; a clamping piece, which is detachably connected to the door cover and is distributed along the circumference of the sealing ring; wherein the clamping piece and the door cover clamp the sealing ring along the axial direction of the sealing ring.

[0006] In some embodiments, the sealing ring includes: a main body, which is in contact with the door cover; and a protruding portion, which is arranged on a side of the main body away from the door cover; wherein the clamping piece and the door cover respectively press against two sides of the main body in the axial direction of the sealing ring, the protruding portion is exposed to the clamping piece and the door cover, and is arranged to protrude along the axial direction of the sealing ring.

[0007] In some embodiments, the clamping member includes: a mounting portion, which is detachably connected to the door cover; and a clamping portion, which is formed on a side of the mounting portion facing the main body, and is used to press the main body along the axial direction of the sealing ring.

[0008] In some embodiments, a pressing block is provided on a side of the pressing portion facing the door cover, and a distance is left between the pressing block and the main body.

[0009] In some embodiments, the furnace door also includes: an adjusting member, the adjusting member is connected between the door cover and the clamping member, and the adjusting member is used to adjust the axial distance between the clamping member and the door cover in the sealing ring; when there are multiple adjusting members, the multiple adjusting members are distributed along the circumference of the clamping member.

[0010] In some embodiments, the adjusting member includes an adjusting screw and an adjusting nut. The screw portion of the adjusting screw is inserted into the clamping member and the door cover along the axial direction of the sealing ring and is threadedly connected to the adjusting nut. The head of the adjusting screw cooperates with the adjusting nut to limit the axial distance between the door cover and the clamping member on the sealing ring.

[0011] In some embodiments, the door cover is provided with a first connecting hole for the screw portion of the adjusting screw to pass through, and the clamping piece is provided with a second connecting hole for the screw portion of the adjusting screw to pass through, and the aperture of the first connecting hole and / or the second connecting hole is larger than the diameter of the screw portion of the adjusting screw.

[0012] In some embodiments, the door cover includes: a face cover; a connecting piece, which is arranged on a side of the face cover facing the sealing ring and is distributed along the circumference of the sealing ring; wherein the connecting piece includes: a connecting portion, which is detachably connected to the clamping piece, and the connecting portion and the clamping piece respectively hold two sides of the sealing ring in the axial direction of the sealing ring; a positioning portion, which is formed on a side of the connecting portion facing the sealing ring, and the positioning portion holds the side of the sealing ring away from the clamping piece along the radial direction of the sealing ring.

[0013] In some embodiments, the door cover further includes: a heat insulating member, which is disposed on a side of the face cover facing the sealing ring, and is used to block heat transfer.

[0014] In some embodiments, the surface cover is arranged to protrude in an arc shape in a direction away from the sealing ring.

[0015] A second aspect of the present application provides a heating furnace, comprising a furnace body and a furnace door as provided in the first aspect, wherein the furnace door is arranged at a furnace opening of the furnace body, and the furnace door is sealed and connected to the furnace body via a sealing ring.

[0016] The furnace door and heating furnace provided by the present application clamp the sealing ring along the axial direction of the sealing ring through the cooperation of the pressing piece and the door cover, so that the sealing ring is fixed on the door cover, and the sealing ring is prevented from falling off by itself in the process of abutting against the furnace body, so as to maintain the sealing performance. When the sealing ring needs to be disassembled, the pressing piece can be removed from the door cover, and the sealing ring can be easily taken out from between the baffle and the door cover. When the sealing ring needs to be installed, the sealing ring can be placed on the door cover first, and then the pressing piece can be installed on the door cover to clamp and fix the sealing ring through the pressing piece and the door cover. In this way, the difficulty of disassembling and assembling the sealing ring is reduced, and it is convenient for operators to replace the sealing ring, so as to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a heating furnace according to an embodiment of the present application.

[0018] Figure 2 This is a schematic structural diagram of a furnace door according to an embodiment of the present application.

[0019] Figure 3 for Figure 2 Section view along line AA.

[0020] Figure 4 This is an exploded view of the furnace door according to an embodiment of the present application.

[0021] Figure 5 This is an exploded view of the clamping member, sealing ring and door cover of the embodiment of the present application.

[0022] Figure 6 for Figure 3 A partial enlarged view of point VI in the middle.

[0023] Figure 7 This is a schematic diagram of the matching relationship among the door cover, the clamping member, the sealing ring and the adjusting member of the embodiment of the present application.

[0024] Figure 8 This is a schematic diagram of the state of the main body of the sealing ring of an embodiment of the present application before and after the compression amount changes, wherein the compression amount of the main body changes from large to small.

[0025] Main component symbols

[0026] 100. Furnace door; 10. Door cover; 11. Connecting piece; 111. Connecting portion; 112. Positioning portion; 113. First connecting hole; 12. Surface cover; 121. Paddle barrel; 14. Heat insulating piece; 20. Sealing ring; 21. Main body; 22. Protruding portion; 30. Pressing piece; 31. Mounting portion; 311. Second connecting hole; 32. Pressing portion; 321. Pressing block; 40. Adjusting piece; 41. Adjusting screw; 411. Screw portion; 412. Head; 42. Adjusting nut; 200. Furnace body; 201. Furnace mouth; 300. Heating furnace. DETAILED DESCRIPTION

[0027] In the description of the embodiments of the present application, when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally disposed element at the same time. When an element is considered to be "disposed on" another element, it may be directly disposed on the other element or there may be a centrally disposed element at the same time. In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or it may be indirectly connected through an intermediate medium, or it may be internal communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned description of the drawings are intended to cover non-exclusive inclusions.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The heating furnace is one of the important process equipment in the solar cell manufacturing production line, which can be used in LPCVD (low pressure chemical vapor deposition), PECVD (plasma enhanced chemical vapor deposition) and other processes. In actual work, the heating furnace needs to provide a vacuum environment inside the furnace. It not only needs to maintain normal operation under a certain tube pressure, but also needs to have good airtightness to ensure that the gas inside the furnace will not leak.

[0031] The heating furnace includes a furnace body and a furnace door. The furnace body is provided with a furnace mouth. The furnace door is movably connected to the furnace mouth. A sealing ring is provided on the side of the furnace door facing the furnace body. Before processing, the furnace door can be opened to put materials into the furnace body from the furnace mouth. During the processing, the furnace door is closed, the furnace door seals the furnace mouth of the furnace body, and the furnace door is sealed and connected to the furnace body through a sealing ring. As the working time of the furnace door in a high temperature environment increases, the sealing ring may age, resulting in changes in the sealing performance of the furnace door, affecting the production quality.

[0032] In the related art, a slot is provided on one side of the furnace door, and the sealing ring is fixed in the slot. When removing the sealing ring, it is necessary to apply force to the sealing ring to pull it out of the slot of the furnace door; when installing the sealing ring, it is necessary to insert the sealing ring into the slot of the furnace door through interference fit, which makes it difficult to disassemble and assemble the sealing ring, and it is troublesome to replace the sealing ring, which affects work efficiency.

[0033] To this end, the present application provides a furnace door and a heating furnace, which have the technical effect of facilitating the disassembly and assembly of the sealing ring and improving work efficiency.

[0034] See also Figure 1 and Figure 2The embodiment of the present application first provides a furnace door 100, which can be applied to a heating furnace 300. The heating furnace 300 includes a furnace body 200 and a furnace door 100, the furnace body 200 is provided with a furnace opening 201, and the furnace door 100 is used to close the furnace opening 201 of the furnace body 200 and is sealed and connected to the furnace body 200.

[0035] See also Figure 1 and Figure 3 The furnace door 100 includes a door cover 10, a sealing ring 20 and a pressing member 30, wherein the sealing ring 20 is arranged on one side of the door cover 10, and the sealing ring 20 is annular as a whole. The door cover 10 is movably connected to the furnace body 200 so that the door cover 10 has an open state and a closed state. When the door cover 10 is in the open state, materials are allowed to be put into the furnace body 200 from the furnace opening 201 of the furnace body 200. When the door cover 10 is in the closed state, the door cover 10 closes the furnace opening 201 of the furnace body 200, and the sealing ring 20 is pressed against the furnace opening 201 along the axial direction of the sealing ring 20 (i.e., the X-axis direction in the figure) so that the door cover 10 and the furnace body 200 are sealed.

[0036] The pressing member 30 is detachably connected to the door cover 10, and is located on one side of the sealing ring 20, and is distributed along the circumference of the sealing ring 20. The pressing member 30 and the door cover 10 respectively abut against two sides of the sealing ring 20 in the axial direction, so that the pressing member 30 and the door cover 10 clamp the sealing ring 20 in the axial direction.

[0037] It can be understood that the pressing piece 30 cooperates with the door cover 10 to clamp the sealing ring 20 along the axial direction of the sealing ring 20, so that the sealing ring 20 is fixed on the door cover 10, and the sealing ring 20 is prevented from falling off by itself in the process of abutting against the furnace body 200, so as to maintain the sealing performance. When the sealing ring 20 needs to be disassembled, the pressing piece 30 can be disassembled from the door cover 10, and the sealing ring 20 can be easily taken out from between the baffle and the door cover 10. When the sealing ring 20 needs to be installed, the sealing ring 20 can be placed on the door cover 10 first, and then the pressing piece 30 can be installed on the door cover 10, so as to clamp and fix the sealing ring 20 through the pressing piece 30 and the door cover 10. In this way, the difficulty of disassembling and assembling the sealing ring 20 is reduced, and it is convenient for operators to replace the sealing ring 20, so as to improve work efficiency.

[0038] See also Figure 1 and Figure 4 In one embodiment of the present application, the door cover 10 includes a connecting member 11, a cover 12 and a heat insulating member 13, wherein the connecting member 11 is arranged on a side of the cover 12 facing the sealing ring 20 and is distributed along the circumference of the sealing ring 20. The heat insulating member 13 is arranged on a side of the cover 12 facing the sealing ring 20, and is used to block heat transfer.

[0039] Exemplarily, the middle of the connecting member 11 is hollowed out, the shape of the connecting member 11 is adapted to the furnace opening 201 of the furnace body 200, and the cover 12 is arranged on the connecting member 11 and covers the middle of the connecting member 11, so that the combination of the connecting member 11 and the cover 12 can close the furnace opening 201 of the furnace body 200. In the example of this embodiment, the overall profile of the connecting member 11 includes an arc segment and a straight segment, and the straight segment can be provided for the hinge structure, and the connecting member 11 can be hinged to the furnace body 200 through the hinge structure. It can be understood that the shape of the connecting member 11 can be configured according to actual needs, and the present application does not limit this.

[0040] See also Figure 4 and Figure 5 In one embodiment, the connecting member 11 includes a connecting portion 111 and a positioning portion 112, wherein the connecting portion 111 is detachably connected to the pressing member 30, the connecting portion 111 and the pressing member 30 respectively abut against two sides of the sealing ring 20 in the axial direction of the sealing ring 20, and the cover 12 is welded to the connecting portion 111. The positioning portion 112 is formed on a side of the connecting portion 111 facing the sealing ring 20, and a gap is left between the positioning portion 112 and the pressing member 30 in the radial direction of the sealing ring 20 (i.e., the Y-axis direction in the figure), and the positioning portion 112 abuts against the side of the sealing ring 20 away from the pressing member 30 along the radial direction of the sealing ring 20.

[0041] See also Figure 5 and Figure 6 , illustratively, the connection part 111 and the positioning part 112 are integrally formed, and the positioning part 112 is formed by the middle part of the connection part 111 protruding along the axial direction of the sealing ring 20, so that the positioning part 112 is annularly distributed along the circumference of the connection part 111, and the sealing ring 20 is sleeved on the outer side of the positioning part 112. In this way, a stepped positioning groove is formed between the positioning part 112 and the connection part 111, and the positioning groove accommodates and positions the sealing ring 20, which can prevent the sealing ring 20 from shrinking inward or deviating from the position, thereby improving the sealing stability of the sealing ring 20. On the other hand, the interior of the positioning part 112 is hollow, which can leave a certain space for the installation of other structures.

[0042] It is worth noting that in other embodiments, the connecting portion 111 and the positioning portion 112 may also be configured as separate structures, which are fixedly connected by welding or bolting, etc., and the present application does not impose any restrictions on this.

[0043] In one embodiment, the cover 12 is arranged to be arc-shaped and protrude in a direction away from the sealing ring 20. The arc-shaped protruding structure of the cover 12 can reduce the risk of deformation of the door cover 10 caused by thrust during use, and reduce the risk of carbonization of the sealing ring 20 due to high temperature.

[0044] In one embodiment, the face cover 12 is provided with a paddle cylinder 121. The paddle outside the furnace body 200 can pass through the paddle cylinder 121 and enter the interior of the furnace body 200.

[0045] See also Figure 1 and Figure 5 In one embodiment, the heat insulating member 13 is fixedly connected to the connecting member 11. When the furnace door 100 is in a closed state, the heat insulating member 13 reduces the heat transfer between the inside and outside of the furnace body 200, promotes rapid temperature rise in the furnace, and reduces the impact of the high temperature inside the furnace body 200 on the external environment of the furnace body 200. Exemplarily, the heat insulating member 13 can be a mirror panel, which is embedded and fixed in the middle of the positioning portion 112. The mirror panel can radiate the heat from the furnace body 200 into the furnace body 200 through the surface to achieve a heat insulation effect.

[0046] See also Figure 5 and Figure 6 In one embodiment of the present application, the sealing ring 20 is annular as a whole, and the shape of the sealing ring 20 is adapted to the shape of the door cover 10. Thus, the shape of the sealing ring 20 can be a circular ring, a special-shaped ring, or an annular structure with a gap; for example, the sealing ring 20 can be annular when not fixed to the door cover 10, and when the sealing ring 20 is set on the door cover 10, the sealing ring 20 is positioned at the positioning portion 112 and deformed so that the overall shape of the sealing ring 20 is adapted to the shape of the door cover 10. It can be understood that the shape of the sealing ring 20 can be configured according to actual needs, as long as it can meet the sealing requirements, and the present application does not limit this.

[0047] The sealing ring 20 includes a main body 21 and a protruding portion 22, wherein the main body 21 contacts the door cover 10. The protruding portion 22 is disposed on a side of the main body 21 away from the door cover 10. The pressing member 30 and the door cover 10 respectively press against two sides of the main body 21 in the axial direction of the sealing ring 20, and the protruding portion 22 is exposed to the pressing member 30 and the door cover 10, and is disposed protrudingly along the axial direction of the sealing ring 20.

[0048] Exemplarily, the main body 21 and the protrusion 22 are integrally formed of an elastic material, the main body 21 is annular as a whole, the protrusion 22 is formed by the part of the main body 21 close to the inner ring protruding along its axial direction, and the thickness of the protrusion 22 in the radial direction of the sealing ring 20 is smaller than the thickness of the main body 21 in the radial direction of the sealing ring 20, so that the cross-section of the sealing ring 20 in its radial direction is L-shaped as a whole.

[0049] When the sealing ring 20 is placed on the door cover 10, the main body 21 is sleeved on the positioning portion 112, the inner side of the main body 21 abuts against the positioning portion 112, and the side of the main body 21 away from the sealing ring 20 abuts against the connecting portion 111. When the pressing member 30 is fixed to the door cover 10, the pressing member 30 and the connecting portion 111 respectively abut against the two sides of the main body 21 in the axial direction of the sealing ring 20, the part of the main body 21 close to the inner circle is exposed between the pressing member 30 and the connecting portion 111, and the protruding portion 22 protrudes and is exposed between the pressing member 30 and the positioning portion 112.

[0050] It can be understood that the main body 21 of the sealing ring 20 is used for the clamping member 30 to cooperate with the door cover 10 to clamp, so as to fix the sealing ring 20. The protruding portion 22 of the sealing ring 20 is used to abut against the flange at the furnace opening 201 along the axial direction of the sealing ring 20 when the door cover 10 is in the closed state (see Figure 1 The surface where the protrusion 22 contacts the flange at the furnace opening 201 may be an arc surface or a plane surface, and this application does not limit this.

[0051] It is worth noting that the sealing ring 20 in this embodiment adopts an L-shaped cross-sectional structure, and achieves a better sealing contact effect through a preset protrusion 22; in other embodiments, the sealing ring 20 may also adopt a cross-sectional structure of other shapes (such as round, square), and utilize the clamping of the clamping piece 30 and the door cover 10 to cause the sealing ring 20 to deform in a direction away from the door cover 10 to form a protrusion 22, and the present application does not impose any restrictions on this.

[0052] See also Figure 5 and Figure 6 In one embodiment of the present application, the pressing member 30 includes a mounting portion 31 and a pressing portion 32, wherein the mounting portion 31 is detachably connected to the door cover 10. The pressing portion 32 is formed on a side of the mounting portion 31 facing the main body 21, and the pressing portion 32 is used to press the main body 21 along the axial direction of the sealing ring 20.

[0053] Exemplarily, the shape of the mounting portion 31 matches the shape of the connecting portion 111, the mounting portion 31 is in the shape of a hollow disc as a whole, and the mounting portion 31 is distributed along the circumference of the connecting portion 111. The clamping portion 32 is formed by the portion of the mounting portion 31 away from the connecting member 11 protruding radially along the sealing ring 20. It is worth noting that in other embodiments, the mounting portion 31 and the clamping portion 32 can also be set as a split structure, which is fixedly connected by welding or bolting, etc., and the present application does not limit this.

[0054] The width of the pressing portion 32 in the radial direction of the sealing ring 20 is smaller than the width of the main body 21 in the radial protrusion of the sealing ring 20. There is a gap between the pressing portion 32 and the connecting portion 111, and there is a gap between the pressing portion 32 and the positioning portion 112. When the pressing member 30 and the door cover 10 clamp the sealing ring 20, the pressing portion 32 and the connecting portion 111 are respectively pressed against the two sides of the main body 21, part of the main body 21 is exposed between the pressing portion 32 and the connecting portion 111, and the protrusion 22 is exposed between the pressing portion 32 and the positioning portion 112, and the protrusion 22 is arranged to protrude relative to the pressing portion 32.

[0055] In one embodiment, a pressing block 321 is provided on the side of the pressing portion 32 facing the door cover 10, and a distance is left between the pressing block 321 and the main body 21 in the axial direction of the sealing ring 20. Exemplarily, the pressing block 321 is formed by bending the inner edge of the pressing portion 32 in a step-like manner toward the direction close to the connecting portion 111.

[0056] When the pressing portion 32 and the connecting portion 111 cooperate to clamp the main body 21, the pressing block 321 and the pressing portion 32 simultaneously press the main body 21 along the axial direction of the sealing ring 20, thereby increasing the squeezing rate of the main body 21. In addition, the pressing block 321 can cooperate with the main body 21 to form a stepped clamping structure, thereby making the sealing ring 20 more firmly fixed.

[0057] In one embodiment, the pressing portion 32 is pressed against a side of the protruding portion 22 away from the positioning portion 112 along the radial direction of the sealing ring 20, so that the pressing portion 32 and the positioning portion 112 cooperate to position the protruding portion 22 in the radial direction of the sealing ring 20. The mounting portion 31 is pressed against a side of the main body 21 away from the positioning portion 112 along the radial direction of the sealing ring 20, so that the mounting portion 31 and the positioning portion 112 cooperate to position the main body 21 in the radial direction of the sealing ring 20.

[0058] In this way, the clamping portion 32, the connecting portion 111 and the positioning portion 112 cooperate with each other to complete the axial and radial positioning of the sealing ring 20, improve the stability of the sealing ring 20, and at the same time limit the deformation direction of the sealing ring 20, so that when the sealing ring 20 is squeezed, the sealing ring 20 is prompted to bulge in the direction exposed by the clamping portion 32 and the positioning portion 112.

[0059] See also Figure 1 and Figure 7 In one embodiment of the present application, the furnace door 100 further includes an adjusting member 40, which is connected between the door cover 10 and the pressing member 30. In the case where a plurality of adjusting members 40 are provided, the plurality of adjusting members 40 are distributed along the circumference of the pressing member 30. The adjusting member 40 is used to adjust the distance between the door cover 10 and the pressing member 30, so as to adjust the volume of the protrusion 22 exposed from the door cover 10 and the pressing member 30.

[0060] See also Figure 7 and Figure 8 It can be understood that when the main body 21 is compressed and deformed within a certain range, the protrusion 22 will also be deformed, so that the volume of the protrusion 22 exposed from the pressing member 30 and the door cover 10 is affected by the compression amount of the main body 21.

[0061] For example, when the compression amount of the main body 21 increases, the protruding distance of the protrusion 22 in the axial direction of the sealing ring 20 becomes longer, resulting in a larger volume of the protrusion 22 exposed from the clamping piece 30 and the door cover 10; when the compression amount of the main body 21 decreases, the protruding distance of the protrusion 22 in the axial direction of the sealing ring 20 becomes smaller, resulting in a smaller volume of the protrusion 22 exposed from the clamping piece 30 and the door cover 10.

[0062] See also Figure 1 and Figure 7 In actual application, when the door cover 10 is in a closed state, the sealing ring 20 is against the furnace opening 201 of the furnace body 200. The sealing ring 20 is actually squeezed between the door cover 10 and the furnace opening 201, and the door cover 10 supports the sealing ring 20. In order to make each part of the sealing ring 20 evenly contact and fit with the furnace opening 201, the side of the door cover 10 facing the furnace opening 201 should be parallel to the surface of the furnace opening 201 to achieve a better sealing effect. However, the door cover 10 may be deformed under the influence of the high temperature environment during long-term operation, resulting in the door cover 10 having an excessive flatness. At this time, if the door cover 10 is directly used to support the sealing ring 20, it may cause the various parts of the sealing ring 20 to not evenly contact and fit with the furnace opening 201.

[0063] In the embodiment of the present application, the volume of the protrusion 22 exposed from the door cover 10 and the pressing member 30 is adjusted by the adjusting member 40, and the flatness deviation of the door cover 10 can be compensated by increasing or decreasing the volume of the protrusion 22, so as to compensate for the deformation of the door cover 10 and ensure the sealing effect. On the other hand, in the present embodiment, the pressing member 30 cooperates with the positioning member 112 to abut against both sides of the main body 21 in the radial direction of the sealing ring 20, and the pressing member 30 cooperates with the positioning member 112 to abut against both sides of the protrusion 22 in the radial direction of the sealing ring 20, so that when the compression amount of the main body 21 changes, the protrusion 22 is deformed as a whole along the axial direction of the sealing ring 20, thereby effectively changing the exposed volume of the protrusion 22.

[0064] For example, when the flatness of the door cover 10 is out of tolerance, such as the upper end of the door cover 10 is tilted, the distance between the upper end of the door cover 10 and the furnace opening 201 is greater than the distance between the lower end of the door cover 10 and the furnace opening 201. At this time, the volume of the protrusion 22 corresponding to the upper end of the door cover 10 exposed from the door cover 10 and the pressing member 30 can be increased by the adjusting member 40, or the volume of the protrusion 22 corresponding to the lower end of the door cover 10 exposed from the door cover 10 and the pressing member 30 can be reduced by the adjusting member 40, so that the whole formed by the door cover 10 and the sealing ring 20 can still be parallel to the furnace opening 201, achieving a sealing effect, while reducing the repair cost of the door cover 10 and reducing the production cost.

[0065] See also Figure 7 and Figure 8 In one embodiment of the present application, a plurality of adjusting members 40 are provided, and the plurality of adjusting members 40 are distributed along the circumference of the pressing member 30. The adjusting member 40 includes an adjusting screw 41 and an adjusting nut 42. The adjusting screw 41 has a screw portion 411 and a head portion 412. The screw portion 411 of the adjusting screw 41 is penetrated through the pressing member 30 and the door cover 10 along the axial direction of the sealing ring 20, and is threadedly connected with the adjusting nut 42. The head portion 412 of the adjusting screw 41 cooperates with the adjusting nut 42 to limit the distance between the door cover 10 and the pressing member 30 in the axial direction of the sealing ring 20.

[0066] By making the adjusting screw 41 and the adjusting nut 42 rotate relative to each other, the adjusting nut 42 can be moved along the screw portion 411 of the adjusting screw 41, so as to adjust the distance between the head 412 of the adjusting screw 41 and the adjusting nut 42. When the distance between the head 412 of the adjusting screw 41 and the adjusting nut 42 increases, the distance between the pressing member 30 and the door cover 10 increases, thereby increasing the distance between the pressing member 30 and the door cover 10, reducing the amount of compression on the main body 21, and further reducing the volume of the protruding portion 22 exposed from the door cover 10 and the pressing member 30. When the distance between the head 412 of the adjusting screw 41 and the adjusting nut 42 decreases, the distance between the pressing member 30 and the door cover 10 decreases, thereby reducing the distance between the pressing member 30 and the door cover 10, increasing the amount of compression on the main body 21, and further increasing the volume of the protruding portion 22 exposed from the door cover 10 and the pressing member 30.

[0067] On the other hand, in actual application scenarios, the operator can replace the sealing ring 20 by disassembling the clamping piece 30, or by increasing the distance between the clamping piece 30 and the door cover 10 to replace the sealing ring 20. This application does not impose any restrictions on this.

[0068] Exemplarily, the connecting portion 111 is provided with a plurality of first connecting holes 113 corresponding to the head portion 412 of the adjusting screw 41, and the plurality of first connecting holes 113 penetrate the connecting portion 111 along the axial direction of the sealing ring 20, and the aperture of the first connecting hole 113 is greater than or equal to the diameter of the screw portion 411, and is smaller than the diameter of the head portion 412, and is smaller than the outer diameter of the adjusting nut 42.

[0069] The mounting portion 31 is provided with a plurality of second connection holes 311 corresponding to the screw portion 411 of the adjusting screw 41. The plurality of second connection holes 311 are arranged opposite to the plurality of first connection holes 113, and the plurality of second connection holes 311 penetrate the mounting portion 31 along the axial direction of the sealing ring 20. The aperture of the second connection hole 311 is greater than or equal to the diameter of the screw portion 411, and is smaller than the diameter of the head portion 412, and is smaller than the outer diameter of the adjusting nut 42. The screw portion 411 of each adjusting screw 41 is sequentially penetrated through the corresponding first connection hole 113 and the corresponding second connection hole 311, and is threadedly connected with the corresponding adjusting nut 42. The head portion 412 of the adjusting screw 41 abuts against the side of the connecting portion 111 away from the mounting portion 31, and the adjusting nut 42 abuts against the side of the mounting portion 31 away from the connecting portion 111.

[0070] In other embodiments, the screw portion 411 of the adjusting screw 41 may also be sequentially inserted into the second connecting hole 311 and the first connecting hole 113, and threadedly connected to the corresponding adjusting nut 42, the head 412 of the adjusting screw 41 abuts against the side of the mounting portion 31 away from the connecting portion 111, and the adjusting nut 42 abuts against the side of the connecting portion 111 away from the mounting portion 31, as long as the effect of limiting the distance between the mounting portion 31 and the connecting portion 111 can be achieved, the present application does not impose any restrictions on this.

[0071] In this embodiment, the diameter of the first connection hole 113 and / or the diameter of the second connection hole 311 is larger than the diameter of the screw portion 411. Exemplarily, the diameter of the second connection hole 311 is larger than the diameter of the screw portion 411, and the diameter of the first connection hole 113 is larger than the diameter of the second connection hole 311.

[0072] It is understandable that when the distance between the clamping piece 30 and the door cover 10 changes, the clamping piece 30 and the door cover 10 may tilt. By utilizing the aperture of the first connecting hole 113 and / or the aperture of the second connecting hole 311 being larger than the diameter of the screw portion 411, the screw portion 411 is allowed to tilt within a certain range inside the first connecting hole 113 and / or the second connecting hole 311, thereby preventing the adjusting screw 41 from getting stuck after the clamping piece 30 and the door cover 10 tilt.

[0073] It is worth noting that in the embodiment of the present application, the cooperation of the adjusting screw 41 and the adjusting nut 42 plays the role of adjusting the distance between the pressing member 30 and the door cover 10 on the one hand, and plays the role of making the pressing member 30 and the door cover 10 detachable. After each adjusting nut 42 is removed from the corresponding adjusting screw 41, the pressing member 30 and the door cover 10 can be separated from each other, and the cooperation of the adjusting screw 41 and the adjusting nut 42 plays the role of adjusting the compression amount and detachable connection at the same time.

[0074] In other embodiments, the adjusting member 40 may also be a gasket of various different thicknesses, which is used to be arranged between the pressing member 30 and the door cover 10 to limit the minimum distance between the pressing member 30 and the door cover 10; for example, by inserting a gasket with a larger thickness between the pressing member 30 and the door cover 10, and then fixing the pressing member 30 and the door cover 10 with a bolt structure, the distance between the pressing member 30 and the door cover 10 is increased; by inserting a gasket with a smaller thickness between the pressing member 30 and the door cover 10, and then fixing the pressing member 30 and the door cover 10 with a bolt structure, the distance between the pressing member 30 and the door cover 10 is reduced; the present application does not impose any restrictions on this.

[0075] See also Figure 1 and Figure 4 The embodiment of the present application further provides a heating furnace 300, which includes a furnace body 200 and a furnace door 100, and the furnace door 100 is arranged at a furnace opening 201 of the furnace body 200. The furnace door 100 includes a door cover 10, a sealing ring 20 and a pressing member 30, and the pressing member 30 and the door cover 10 cooperate with the sealing ring 20, and the furnace door 100 is sealed and connected to the furnace body 200 through the sealing ring 20.

[0076] When the sealing performance of the sealing ring 20 is degraded, the operator can quickly replace the sealing ring 20 by disassembling and assembling the door cover 10 and the pressing member 30. When the door cover 10 has a flatness deviation due to deformation, the operator can adjust the compression amount of the sealing ring 20 at the corresponding position and use the variable protruding volume of the sealing ring 20 to compensate for the deformed part of the door cover 10, so that the door cover 10 can still be used after deformation within a certain range, reducing the repair cost of the door cover 10 and reducing the production cost.

[0077] The implementation principle of the heating furnace 300 provided in the embodiment of the present application can refer to the relevant description in the above embodiment, and the present application will not repeat it here. Finally, it should be noted that the above embodiment is only used to illustrate the technical solution of the present application and is not limited. Although the present application is described in detail with reference to the preferred embodiment, ordinary technicians in this field should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A furnace door, characterized in that: include: Door cover; A sealing ring, the sealing ring being arranged on one side of the door cover; A clamping piece, wherein the clamping piece is detachably connected to the door cover and is distributed along the circumference of the sealing ring; wherein the clamping piece and the door cover clamp the sealing ring along the axial direction of the sealing ring.

2. The furnace door according to claim 1, characterized in that: The sealing ring comprises: a main body portion, the main body portion being in contact with the door cover; A protrusion, the protrusion being arranged on a side of the main body away from the door cover; The pressing member and the door cover respectively press against two sides of the main body in the axial direction of the sealing ring, and the protruding portion is exposed from the pressing member and the door cover and is protruded along the axial direction of the sealing ring.

3. The furnace door according to claim 2, characterized in that: The pressing member comprises: A mounting portion, the mounting portion being detachably connected to the door cover; A pressing portion is formed on a side of the mounting portion facing the main body portion, and is used to press the main body portion along the axial direction of the sealing ring.

4. The furnace door according to claim 3, characterized in that: A pressing block is arranged on one side of the pressing portion facing the door cover, and a distance is left between the pressing block and the main body.

5. The furnace door according to claim 1, characterized in that: The furnace door also includes: An adjusting member, the adjusting member is connected between the door cover and the pressing member, and the adjusting member is used to adjust the distance between the pressing member and the door cover in the axial direction of the sealing ring; In the case that a plurality of the adjusting members are provided, the plurality of the adjusting members are distributed along the circumferential direction of the pressing member.

6. The furnace door according to claim 5, characterized in that: The adjusting member includes an adjusting screw and an adjusting nut. The screw portion of the adjusting screw passes through the clamping member and the door cover along the axial direction of the sealing ring and is threadedly connected with the adjusting nut. The head of the adjusting screw cooperates with the adjusting nut to limit the axial distance between the door cover and the clamping member of the sealing ring.

7. The furnace door according to claim 6, characterized in that: The door cover is provided with a first connecting hole for the screw portion of the adjusting screw to pass through, and the clamping piece is provided with a second connecting hole for the screw portion of the adjusting screw to pass through, and the aperture of the first connecting hole and / or the second connecting hole is larger than the diameter of the screw portion of the adjusting screw.

8. The furnace door according to claim 1, characterized in that: The door cover comprises: Face cover; A connecting piece, the connecting piece is arranged on a side of the surface cover facing the sealing ring and is distributed along the circumference of the sealing ring; Wherein, the connecting piece comprises: A connecting portion, wherein the connecting portion is detachably connected to the pressing member, and the connecting portion and the pressing member respectively abut against two sides of the sealing ring in the axial direction of the sealing ring; A positioning portion is formed on a side of the connecting portion facing the sealing ring, and the positioning portion is abutted against a side of the sealing ring away from the pressing member along the radial direction of the sealing ring.

9. The furnace door according to claim 8, characterized in that: The door cover also includes: A heat insulating member is arranged on a side of the surface cover facing the sealing ring, and is used to block heat transfer.

10. The furnace door according to claim 8, characterized in that: The surface cover is arranged to protrude in an arc shape in a direction away from the sealing ring.

11. A heating furnace, characterized in that: The invention comprises a furnace body and a furnace door as claimed in any one of claims 1 to 10, wherein the furnace door is arranged at a furnace opening of the furnace body, and the furnace door is sealed and connected to the furnace body through the sealing ring.

Images