Furnace door system of horizontal degumming furnace and horizontal degumming furnace thereof

Abstract

The utility model belongs to the field of horizontal degumming furnaces, and particularly relates to a furnace door system of a horizontal degumming furnace and the horizontal degumming furnace thereof, which comprises a furnace cover, an inner furnace door and a connecting piece, one side of the furnace cover is hinged to the furnace body; one end of the connector is hinged to the inner wall of the furnace cover, and the other end of the connector is hinged to the outer wall of the inner furnace door; the hinged axis of the furnace cover and the furnace body and the two hinged axes of the connecting piece are parallel to each other; the overall dimension of the furnace cover is larger than or equal to the dimension of a furnace opening of the furnace body, and the overall dimension of the inner furnace door is smaller than or equal to the inner diameter of a furnace cavity of the furnace body. The sealing structure on the furnace cover is prevented from being affected by the high-temperature environment and losing efficacy, the cooling structure on the furnace cover can be prevented from affecting the high-temperature environment in the furnace cavity, the temperature of the side, close to the furnace opening, of the furnace cavity is guaranteed, and the utilization rate and the degumming effect of the furnace cavity are improved.

Description

Technical Field

[0001] The utility model belongs to the field of horizontal degumming furnaces, and in particular relates to a furnace door system of a horizontal degumming furnace and the horizontal degumming furnace. Background Art

[0002] The basic process of preparing silicon carbide ceramics: the raw materials are mixed evenly to prepare a slurry, spray dried into granulated powder, the granulated powder is pressed into shape, low-temperature debonding-high-temperature sintering-completed. In the process of forming silicon carbide ceramic products, in order to press the raw material powder into shape, a certain amount of binder needs to be added to the powder as a forming agent. In the subsequent sintering process, the forming agent needs to be removed at a temperature of about 800°C. The silicon carbide ceramics without the forming agent can reach the mechanical properties of the ceramics after sintering.

[0003] In the process of degumming silicon carbide ceramics, a dedicated horizontal degumming furnace is used to degumming silicon carbide ceramics. Metal furnace covers are set at both ends of the horizontal degumming furnace, and seals are set at the connection between the furnace cover and the furnace body. For safety reasons, the furnace cover uses a double-layer water-cooled sandwich structure to cool the furnace cover, so as to cool the rubber seals on the furnace cover and the furnace body to avoid deformation and failure of the seals at high temperatures, while ensuring reliable sealing performance in the furnace. However, due to the water cooling method adopted at the end of the furnace cover, the temperature of the furnace on one side of the furnace cover is low, making it difficult to reach the degumming temperature of silicon carbide, affecting the degumming effect of the silicon carbide products near the furnace cover.

[0004] There are several ways to do this with previous equipment:

[0005] 1. Use insulation felt as a plug and manually plug it into the inside of the furnace cover before starting the degumming furnace each time.

[0006] 2. Do not do any treatment, leave a large space near the furnace cover to achieve uniform temperature, and do not place the products to be degummed.

[0007] The defects of the original method:

[0008] Use insulation felt as a plug and manually insert it. Since the insulation plug is heavy, it is inconvenient to operate manually, and the furnace needs to heat up and cool down to complete a cycle. Affected by thermal expansion and contraction, after cooling, the insulation plug often gets stuck on the furnace opening, and it takes a lot of trouble to remove it, which is not conducive to saving manpower and material resources; multiple insertion and removal can easily cause deformation and damage of the insulation felt, which is costly.

[0009] Without any treatment, a large space is left near the furnace cover for temperature equalization. This method causes a great waste of furnace space. More often, due to the heat conduction to the double-layer water-cooled furnace cover, if the water cooling is not timely, it will cause damage to the rubber seal, resulting in damage to the furnace seal, and the product in the furnace will be oxidized, greatly reducing the product yield. Utility Model Content

[0010] The technical problem to be solved by the utility model is to provide a furnace door system of a horizontal degumming furnace and a horizontal degumming furnace which can effectively isolate the high temperature environment in the furnace cavity from the furnace cover.

[0011] The utility model provides a furnace door system of a horizontal degumming furnace, comprising a furnace cover, an inner furnace door and a connecting piece;

[0012] One side of the furnace cover is hingedly arranged on the furnace body;

[0013] One end of the connecting piece is hingedly arranged on the inner wall of the furnace cover, and the other end of the connecting piece is hingedly connected to the outer wall of the inner furnace door;

[0014] The hinge axis of the furnace cover and the furnace body and the two hinge axes of the connecting piece are parallel to each other;

[0015] The outer dimensions of the furnace cover are greater than or equal to the furnace mouth dimensions of the furnace body, and the outer dimensions of the inner furnace door are less than or equal to the inner diameter of the furnace cavity of the furnace body.

[0016] Furthermore, a hinged structure is provided on one side of the furnace cover, and a hinged matching structure is provided on the furnace body outside the furnace opening, and the hinged structure is hinged to the hinged matching structure;

[0017] The connecting piece and the furnace cover as well as the connecting piece and the inner furnace door are hinged at one side close to the hinge structure.

[0018] Furthermore, the connecting member is a rod structure arranged vertically;

[0019] An articulated seat is protruding outward on the upper and lower sides of one end of the connecting piece, and an articulated shaft is downwardly arranged on the articulated seat. Two first articulated cylinders are arranged on the inner wall of the furnace cover. The articulated shaft is hinged to the first articulated cylinders, and the articulated seat is mounted on the upper end of the corresponding first articulated cylinder.

[0020] Furthermore, the connecting member is a rod structure arranged vertically;

[0021] A second hinge cylinder is arranged on the upper and lower sides of the other end of the connecting piece, and two third hinge cylinders are arranged on the outer wall of the inner furnace door, and at least one third hinge cylinder is located at the lower end of the corresponding second hinge cylinder;

[0022] The connecting piece also includes a hinge pin which passes through two second hinge cylinders and two third hinge cylinders.

[0023] Furthermore, a limiting protrusion is provided at the upper end of the hinge pin, and the outer dimension of the limiting protrusion is larger than the inner diameter of the second hinge cylinder and the third hinge cylinder.

[0024] Furthermore, the width of the connecting piece can be adjusted, thereby adjusting the distance between the hinge axes at both ends of the connecting piece.

[0025] Furthermore, the connecting member includes a base, a sliding seat and a locking member, the sliding seat is slidably arranged on the base, and the locking member is used to lock the relative position of the sliding seat and the base.

[0026] Furthermore, the furnace cover is a double-layer water-cooled sandwich structure.

[0027] Furthermore, the inner furnace door is made of a heat-insulating material.

[0028] The utility model also provides a horizontal degumming furnace, comprising a furnace body and a furnace door system of the horizontal degumming furnace.

[0029] The beneficial effect of the utility model is that the furnace door system provided by the utility model can effectively prevent the high temperature in the furnace cavity from being transmitted to the furnace cover by setting a double-layer structure, thereby ensuring the temperature of the furnace cover and preventing the sealing structure on the furnace cover from being affected by the high temperature environment and failing, and can also prevent the cooling structure on the furnace cover from affecting the high temperature environment in the furnace cavity, thereby ensuring the temperature of the furnace cavity near the furnace mouth, and improving the utilization rate of the furnace cavity and the degumming effect. In addition, the inner furnace door is hingedly arranged on the furnace cover through a connecting piece, and the inner furnace door is separated from the furnace cavity when the furnace cover is opened, and the furnace cavity is blocked when the furnace cover is closed, so that the opening and closing operations of the two furnace doors are convenient and quick, and there is no need to repeatedly close and take out the two furnace doors, which effectively guarantees work efficiency and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Attached Figure 1 It is a front cross-sectional view of the utility model;

[0031] Attached Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0032] Attached Figure 3 It is a partial enlarged view of the connecting piece in the utility model.

[0033] In the figure, 1-furnace cover; 11-hinge structure; 12-first hinge cylinder; 2-inner furnace door; 21-third hinge cylinder; 3-connecting piece; 31-hinge seat; 32-hinge shaft; 33-second hinge cylinder; 34-hinge pin; 341-limiting protrusion; 35-base; 36-sliding seat; 37-locking piece; 4-furnace body; 41-furnace mouth; 42-furnace cavity; 43-hinge matching structure. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] As attached Figure 1 -Attached Figure 3 As shown, the utility model provides a furnace door system of a horizontal degumming furnace, comprising a furnace cover 1, an inner furnace door 2 and a connecting piece 3;

[0040] One side of the furnace cover 1 is hingedly arranged on the furnace body 4, and is used to block and open the furnace opening 41 of the furnace body 4;

[0041] One end of the connecting piece 3 is hingedly arranged on the inner wall of the furnace cover 1, and the other end of the connecting piece 3 is hingedly arranged on the outer wall of the inner furnace door 2, that is, the inner furnace door 2 is hingedly arranged on the furnace cover 1 through the connecting piece 3. When in use, the inner furnace door 2 can rotate together with the rotation of the furnace cover 1, and can also rotate relative to the furnace cover 1. Moreover, the connecting piece 3 is hingedly arranged on the furnace cover 1 and the inner furnace door 2, so that the inner furnace door 1 has a certain degree of freedom of movement relative to the furnace cover 1 except for relative rotation, so that the inner furnace door 1 is convenient to be inserted into the furnace cavity 42;

[0042] The hinge axes of the furnace cover 1 and the furnace body 4 and the two hinge axes of the connecting member 3 are parallel to each other, that is, the rotation directions of the furnace cover 1 and the inner furnace door 2 are consistent;

[0043] The outer dimensions of the furnace cover 1 are greater than or equal to the dimensions of the furnace opening 41 of the furnace body 4, and the furnace opening 41 can be sealed and opened. The outer dimensions of the inner furnace door 2 are less than or equal to the inner diameter of the furnace cavity 42 of the furnace body 4, and the inner furnace door 2 can be embedded in the furnace cavity 42, thereby relatively isolating the furnace cavity 42 and the furnace cover 2, thereby preventing the high temperature in the furnace cavity 42 from being transferred to the furnace cover 1.

[0044] The furnace door system provided by the utility model can effectively prevent the high temperature in the furnace cavity 42 from being transmitted to the furnace cover 1 by setting a double-layer structure (furnace cover 1 and inner furnace door 2), thereby ensuring the temperature of the furnace cover 1 and preventing the sealing structure on the furnace cover 1 from being affected by the high temperature environment and failing. It can also prevent the cooling structure on the furnace cover 1 from affecting the high temperature environment in the furnace cavity 42, ensuring the temperature of the furnace cavity 42 near the furnace port 41, and improving the utilization rate and degumming effect of the furnace cavity 42. In addition, the inner furnace door 2 is hingedly arranged on the furnace cover 1 through the connecting piece 3. The inner furnace door 2 is opened when the furnace cover 1 is opened and separated from the furnace cavity 42, and is closed when the furnace cover 1 is closed to block the furnace cavity 42, making the opening and closing operations of the two furnace doors convenient and quick, without the need for repeated closing and removal of the two furnace doors, effectively ensuring work efficiency and reducing labor intensity.

[0045] In addition, since the furnace cover 1 and the inner furnace door 2 are both thick and large in size, they are connected by the connecting piece 3, which ensures safety and ensures that the moving path of the inner furnace door 2 is predictable and will not deviate.

[0046] In one embodiment, a hinge structure 11 is provided on one side of the furnace cover 1, and a hinge matching structure 43 is provided on the furnace body 4 outside the furnace mouth 41, and the hinge structure 11 is hinged with the hinge matching structure 43, and the hinge structure 11 and the hinge matching structure 43 are a hinge axis and a hinge seat, and the specific structural form can be selected according to actual needs;

[0047] The connecting piece 3 is hinged to the furnace cover 1 and the connecting piece 3 is hinged to the inner furnace door 2 on the side close to the hinge structure 11. Take the case where both the furnace cover 1 and the inner furnace door 2 are disc structures, and the furnace mouth 41 is a circular mouth, and the furnace cavity 42 is a cylindrical cavity, that is, when the inner furnace door 2 is inserted into the furnace cavity 42 and the furnace cover 1 is fitted on the furnace mouth 41, the furnace cover 1 and the inner furnace door 2 are concentric, and the hinge axis of the connecting piece 3 is located between the center of the circle of the two furnace doors and the hinge axis of the hinge structure 11. At this time, the inner furnace door 2 rotates relative to the furnace cover 1 on the side close to the hinge structure 11, so as to facilitate the alignment of the inner furnace door 2 with the furnace mouth 41 and enter the furnace cavity 42 through the furnace mouth 41. At the same time, when the two furnace doors are in the open state, they can be relatively away from the furnace mouth 41, so as to facilitate the staff to work through the furnace mouth 41.

[0048] In one embodiment, the connecting member 3 is a vertically arranged rod structure, which improves the structural strength of the connecting member 3 and further improves the stability of the inner furnace door 2 disposed on the furnace cover 1;

[0049] An articulated seat 31 is provided on the upper and lower sides of one end of the connecting piece 3 to protrude outward, and an articulated shaft 32 is provided downward on the articulated seat 31. Two first articulated tubes 12 are provided on the inner wall of the furnace cover 1. The articulated shaft 32 is hinged to the first articulated tube 12, and the articulated seat 31 is mounted on the upper end of the corresponding first articulated tube 12. In this embodiment, the entire inner furnace door 2 and the connecting piece 3 are hinged on the furnace cover 1 by gravity. When the inner furnace door 2 needs to be disassembled and replaced, it is only necessary to lift the inner furnace door 2 and the first articulated tube 12 by lifting equipment or staff. Moreover, it is also convenient for the connecting piece 3 and the inner furnace door 2 to be installed on the furnace cover 1 of the existing horizontal degumming furnace that has been put into use. It is only necessary to weld two first articulated tubes 12 on the inner wall of the furnace cover 1, and the installation is extremely convenient and quick.

[0050] In one embodiment, the connecting member 3 is a vertically arranged rod structure;

[0051] The second hinge cylinder 33 is arranged on the upper and lower sides of the other end of the connecting member 3, and the outer wall of the inner furnace door 2 is provided with two third hinge cylinders 21, at least one of which is located at the lower end of the corresponding second hinge cylinder 33, so that the inner furnace door 2 is laid on the top of the third hinge cylinder 21 through at least one second hinge cylinder 33, so that the inner furnace door 2 is limited on the connecting member 3 by the gravity of the inner furnace door 2 itself;

[0052] The connecting member 3 further comprises a hinge pin 34 which penetrates two second hinge cylinders 33 and two third hinge cylinders 21 , and the hinge pin 34 is used to complete the hinge connection between the furnace cover 1 and the inner furnace door 2 .

[0053] In this embodiment, four hinge tubes are passed through a hinge pin 34, and the hinge structure is simple and reliable.

[0054] In one of the embodiments, a limiting protrusion 341 is provided at the upper end of the hinge pin 34, and the outer dimensions of the limiting protrusion 341 are larger than the inner diameters of the second hinge tube 33 and the third hinge tube 21, that is, the hinge pin 34 is passed through the four hinge tubes by gravity, and the limiting protrusion 341 is provided at the upper end to limit the hinge tube at the top, thereby making it extremely convenient to disassemble and assemble the hinge pin 34, and in the absence of external force, the installation of the hinge pin 34 is stable and reliable, thereby ensuring the reliability of the hinge structure.

[0055] In one embodiment, the two second hinged cylinders 33 are arranged between the two third hinged cylinders 21, that is, the upper third hinged cylinder 21 is located above the upper second hinged cylinder 33, and the lower third hinged cylinder 21 is located below the lower second hinged cylinder 33. At this time, the inner furnace door 2 is limited in the up and down directions through the cooperation of the four hinged cylinders, so that the inner furnace door 2 cannot move in the upper direction of the connecting member 3.

[0056] In one of the embodiments, the width of the connecting member 3 can be adjusted, thereby adjusting the spacing between the hinge axes at both ends of the connecting member 3, and ultimately adjusting the depth of the inner furnace door 2 entering the furnace cavity 42 when the furnace cover 1 is in the closed state, while adjusting the distance that the inner furnace door 2 enters the furnace cavity 42 through the furnace opening 41.

[0057] In one embodiment, the connecting member 3 includes a base 35, a sliding seat 36 and a locking member 37. The sliding seat 36 is slidably set on the base 35, and the locking member 37 is used to lock the relative position of the sliding seat 36 and the base 35. In this way, the distance between the two ends of the connecting member 3 can be adjusted. At this time, the hinge seat 31 is set on the sliding seat 36, and the second hinge cylinder 33 is set on the base 35.

[0058] In one of the embodiments, the furnace cover 1 is a double-layer water-cooled sandwich structure, that is, cooling water flows inside the furnace cover 1 to improve the safety of the horizontal degumming furnace. A sealing structure, such as a rubber sealing ring, is also provided between the furnace cover 1 and the furnace mouth 41. By providing a water-cooling structure, the temperature of the outer wall of the furnace cover 1 can be ensured to reduce safety hazards, and the sealing structure can be cooled to avoid deformation and failure of the sealing structure under high temperature, thereby ensuring the sealing of the furnace cavity 42.

[0059] In one embodiment, the inner furnace door 2 is made of insulating material. In a preferred embodiment, the inner furnace door 2 includes a mounting ring, a metal mesh and an insulating felt. Metal meshes are provided at both ends of the mounting ring, and the space between the two metal meshes and the mounting ring is filled with insulating felt. The inner furnace door 2 has the characteristics of simple structure and good thermal insulation effect.

[0060] The utility model also provides a horizontal degumming furnace, comprising a furnace body 4 and a furnace door system of the horizontal degumming furnace.

[0061] In one of the embodiments, furnace door systems of the horizontal degumming furnace are provided at both ends of the horizontal degumming furnace.

[0062] The furnace door system of the horizontal degumming furnace adopts a connecting piece 3 to connect the inner furnace door 2 and the furnace cover 1 together. The inner furnace door 2 and the furnace cover 1 are linked, and there is no need to load and unload the inner furnace door 2 separately; the furnace cover 1 is reduced from being affected by the high temperature in the furnace cavity 42. When the furnace cover 1 is closed, the inner furnace door 2 directly enters the specified position of the furnace cavity 42. When the furnace cover 1 is opened, the inner furnace door 2 can be pulled out together. The inner furnace door has a long service life, is easy to operate, and has strong deformation resistance.

[0063] The furnace door system of the horizontal degumming furnace makes full use of the heating space in the furnace chamber 42 of the horizontal degumming furnace, reduces the work intensity of workers, increases the use space of the furnace chamber 42, increases the service life of the sealing parts of the furnace cover 1, and improves the yield rate of products.

[0064] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A furnace door system for a horizontal degumming furnace, characterized in that: It comprises a furnace cover (1), an inner furnace door (2) and a connecting piece (3); One side of the furnace cover (1) is hingedly arranged on the furnace body (4); One end of the connecting piece (3) is hingedly arranged on the inner wall of the furnace cover (1), and the other end of the connecting piece (3) is hingedly connected to the outer wall of the inner furnace door (2); The hinge axes of the furnace cover (1) and the furnace body (4) and the two hinge axes of the connecting member (3) are parallel to each other; The outer dimensions of the furnace cover (1) are greater than or equal to the dimensions of a furnace opening (41) of the furnace body (4), and the outer dimensions of the inner furnace door (2) are less than or equal to the inner diameter of a furnace cavity (42) of the furnace body (4).

2. The furnace door system of the horizontal degumming furnace according to claim 1, characterized in that: A hinge structure (11) is provided on one side of the furnace cover (1), and a hinge matching structure (43) is provided on the furnace body (4) outside the furnace opening (41), and the hinge structure (11) is hingedly connected to the hinge matching structure (43); The connecting piece (3) and the furnace cover (1) as well as the connecting piece (3) and the inner furnace door (2) are hinged on a side close to the hinge structure (11).

3. The furnace door system of the horizontal degumming furnace as claimed in claim 1, characterized in that: The connecting member (3) is a rod structure arranged vertically; A hinge seat (31) is provided on the upper and lower sides of one end of the connecting member (3) to protrude outward, and a hinge shaft (32) is provided downward on the hinge seat (31). The inner wall of the furnace cover (1) is provided with two first hinge cylinders (12), the hinge shaft (32) is hinged to the first hinge cylinders (12), and the hinge seat (31) is mounted on the upper end of the corresponding first hinge cylinder (12).

4. The furnace door system of the horizontal degumming furnace as claimed in claim 1, characterized in that: The connecting member (3) is a rod structure arranged vertically; The second hinge cylinder (33) is arranged on the upper and lower sides of the other end of the connecting member (3), and the outer wall of the inner furnace door (2) is provided with two third hinge cylinders (21), at least one of the third hinge cylinders (21) is located at the lower end of the corresponding second hinge cylinder (33); The connecting member (3) further comprises a hinge pin (34) passing through the two second hinge cylinders (33) and the two third hinge cylinders (21).

5. The furnace door system of the horizontal degumming furnace as claimed in claim 4, characterized in that: A limiting protrusion (341) is provided at the upper end of the hinge pin (34), and the outer dimensions of the limiting protrusion (341) are larger than the inner diameters of the second hinge cylinder (33) and the third hinge cylinder (21).

6. The furnace door system of the horizontal degumming furnace according to any one of claims 1 to 5, characterized in that: The width of the connecting piece (3) can be adjusted, thereby adjusting the distance between the hinge axes at both ends of the connecting piece (3).

7. The furnace door system of the horizontal degumming furnace as claimed in claim 6, characterized in that: The connecting member (3) comprises a base (35), a sliding seat (36) and a locking member (37); the sliding seat (36) is slidably arranged on the base (35); and the locking member (37) is used to lock the relative position of the sliding seat (36) and the base (35).

8. The furnace door system of the horizontal degumming furnace according to any one of claims 1 to 5, characterized in that: The furnace cover (1) is a double-layer water-cooled sandwich structure.

9. The furnace door system of the horizontal degumming furnace according to any one of claims 1 to 5, characterized in that: The inner furnace door (2) is made of a heat-insulating material.

10. A horizontal degumming furnace, characterized in that: A furnace door system comprising a furnace body (4) and a horizontal degumming furnace as claimed in any one of claims 1 to 9.

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