Furnace roller channel block structure for heat treatment furnace

Abstract

The utility model discloses a furnace roller channel block structure for a heat treatment furnace, which comprises a furnace roller channel block body, and the furnace roller channel block body is sleeved at a conical transition part of a furnace roller, so that the furnace roller channel block body is in clearance fit with the furnace roller. The furnace roller channel block body comprises a first annular plate, a second annular plate, a third annular plate, a fourth annular plate, a fifth annular plate, a sixth annular plate, a seventh annular plate, an eighth annular plate, a ninth annular plate and a tenth annular plate. The furnace roller channel block body is formed by splicing ten layers of aluminum silicate fiber boards with the same thickness in sequence and is matched with the strip-shaped grooves and the preassembling pieces to be quickly preassembled, positioned and formed, so that the cylindrical channel and the conical channel are coaxial, the furnace roller channel block body is in clearance fit with a furnace roller, heat insulation and protection are conducted on the furnace roller, and the service life of the furnace roller is prolonged. The length of the cylindrical end on the outer side of the furnace roller channel block body is prolonged, the taper of the inner side of the conical channel is adjusted, the attaching degree of the furnace roller channel block body at the conical transition position of the furnace roller is improved, the sealing performance and the heat insulation effect of the furnace roller channel block are improved, and the performance requirement for long-time high-temperature operation of the furnace roller is met.

Description

Technical Field

[0001] The utility model relates to the technical field of protection of furnace rollers of heat treatment furnaces, in particular to a furnace roller channel block structure for heat treatment furnaces. Background Art

[0002] The furnace roller channel block structure is a protective structural block sleeved on the end of the furnace roller of the heat treatment furnace. When the heat treatment furnace is working, the temperature of the furnace roller surface reaches 500℃-960℃. In order to prevent the furnace roller from bending and deforming under high temperature environment, the furnace roller must always be kept rotating. In order to prevent the heat in the furnace from being conducted and radiated to the furnace roller bearing components, the furnace roller channel block is sleeved at the conical transition between the furnace shell and the furnace roller as a heat insulation component.

[0003] After long-term use, the channel block structure will have heat conduction problems. In addition, the fit between the channel block structure and the furnace roller in the prior art is not good, and the sealing is not good, which causes the bearing to be damaged by heat, and further causes the furnace roller to run poorly. Long-term blocking and non-rotating state will cause the furnace roller to be scrapped. When this problem occurs, the furnace needs to be stopped and the furnace roller needs to be replaced. This not only affects work efficiency, but also increases production costs.

[0004] Therefore, the utility model develops a furnace roller channel block structure for a heat treatment furnace to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a furnace roller channel block structure for a heat treatment furnace in view of the deficiencies of the above-mentioned prior art. Ten layers of aluminum silicate fiberboards of equal thickness are sequentially spliced ​​into a furnace roller channel block body, and strip grooves and pre-installed sheets are used for pre-installation positioning and auxiliary splicing, and then glue molding is performed to ensure that the cylindrical channel is coaxial with the conical channel, and the inner taper of the conical channel is adjusted to improve the fit of the furnace roller channel block body at the conical transition of the furnace roller, so as to solve the problems raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A furnace roller channel block structure for a heat treatment furnace, comprising a furnace roller channel block body, and the furnace roller channel block body is sleeved at a furnace roller conical transition portion, so that the furnace roller channel block body and the furnace roller gap are matched, the furnace roller channel block body comprises a ring plate 1, a ring plate 2, a ring plate 3, a ring plate 4, a ring plate 5, a ring plate 6, a ring plate 7, a ring plate 8, a ring plate 9 and a ring plate 10, and the ring plate 1, the ring plate 2, the ring plate 3, the ring plate 4, the ring plate 5, the ring plate 6, the ring plate 7, the ring plate 8, the ring plate 9 and the ring plate 10 are sequentially stacked and glued to maintain coaxial distribution;

[0008] A cylindrical channel is opened in the middle of the ring plates 1 to 5, and a conical channel is opened in the middle of the ring plates 10 to 5, the cylindrical channel is connected to the conical channel, and the cylindrical channel and the conical channel are coaxially distributed with the axis of the furnace roller channel block body;

[0009] A plurality of strip grooves are provided on the outer side of the furnace roller channel block body, and a pre-installed sheet is embedded in the strip groove for pre-joining and coaxial positioning of a plurality of ring plates of the furnace roller channel block body;

[0010] The pre-installed sheet is glued to the furnace roller channel block body, and the pre-installed sheet is fitted with the strip groove, and the outer arc surface of the pre-installed sheet matches the outer arc surface of the furnace roller channel block body.

[0011] Preferably, the inner taper of the conical channel is C=1:1.86, which is used to improve the fit between the furnace roller channel block body and the conical transition of the furnace roller.

[0012] Preferably, the ring plate one, ring plate two, ring plate three, ring plate four, ring plate five, ring plate six, ring plate seven, ring plate eight, ring plate nine and ring plate ten are all set to be aluminum silicate fiberboard, and the thickness of the ten layers of aluminum silicate fiberboard are equal.

[0013] Preferably, corresponding numbers are set on the ring plate one, ring plate two, ring plate three, ring plate four, ring plate five, ring plate six, ring plate seven, ring plate eight, ring plate nine and ring plate ten, and a groove is opened on the outside of each aluminum silicate fiber board, and the grooves on the three adjacent layers of aluminum silicate fiber boards together form a strip groove.

[0014] Preferably, the length of the pre-installed sheet is equal to the thickness of the three-layer aluminum silicate fiberboard, the number of the strip grooves is set to eight, and the eight strip grooves are distributed in a staggered manner around the furnace roller channel block body.

[0015] Preferably, the pre-installed sheet is made of silicon carbide material.

[0016] Preferably, a C-shaped chamfer is provided on one side of the outer end surface of the ring plate.

[0017] Preferably, the wall thickness of the furnace roller channel block body at the cylindrical channel is 157±3 mm, and the wall thickness of the ring plate at the end is 83±3 mm.

[0018] Preferably, the length of the cylindrical channel in the ring plate 5 is set to 28±3 mm.

[0019] The utility model has the following beneficial effects:

[0020] The furnace roller channel block body is formed by splicing ten layers of aluminum silicate fiberboard of equal thickness in sequence, and strip grooves and pre-installed sheets are used for pre-installation positioning and auxiliary splicing, followed by gluing and molding to ensure that the cylindrical channel and the conical channel are coaxial, so as to facilitate the clearance fit between the furnace roller channel block body and the furnace roller, insulate and protect the furnace roller, extend the length of the outer cylindrical end of the furnace roller channel block body, adjust the inner taper of the conical channel, improve the fit of the furnace roller channel block body at the tapered transition of the furnace roller, thereby improving the sealing performance and thermal insulation effect of the furnace roller channel block, meeting the performance requirements of long-term high-temperature operation of the furnace roller, ensuring the safety of the bearings, greatly extending the service life, and significantly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A first-view stereoscopic diagram of the overall structure of the furnace roller channel block structure provided by the utility model;

[0022] Figure 2 A second perspective stereogram of the overall structure of the furnace roller channel block structure provided by the utility model;

[0023] Figure 3 A third-angle perspective view of the overall structure of the furnace roller channel block structure provided by the utility model;

[0024] Figure 4 A side view of the overall structure of the furnace roller channel block structure provided by the utility model;

[0025] Figure 5 A distribution diagram of the strip grooves on the furnace roller channel block structure provided by the utility model;

[0026] Figure 6 A half-section structural stereogram of the furnace roller channel block structure provided by the utility model;

[0027] Figure 7 A cross-sectional view of the furnace roller channel block structure in the comparative example provided by the utility model;

[0028] Figure 8 This is a cross-sectional view of the improved furnace roller channel block structure provided by the utility model.

[0029] Among them are:

[0030] Furnace roller channel block body-1; strip groove-2; pre-installed sheet-3; C-shaped chamfer-4;

[0031] Ring plate one - 101; ring plate two - 102; ring plate three - 103; ring plate four - 104; ring plate five - 105; ring plate six - 106; ring plate seven - 107; ring plate eight - 108; ring plate nine - 109; ring plate ten - 110; cylindrical channel - 111; conical channel - 112. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0033] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0034] like Figure 1-6 As shown, a furnace roller channel block structure for a heat treatment furnace includes a furnace roller channel block body 1, and the furnace roller channel block body 1 is sleeved at the conical transition of the furnace roller, so that the furnace roller channel block body 1 and the furnace roller gap are matched, and the furnace roller channel block body 1 includes a ring plate 101, a ring plate 2 102, a ring plate 3 103, a ring plate 4 104, a ring plate 5 105, a ring plate 6 106, a ring plate 7 107, a ring plate 8 108, a ring plate 9 109 and a ring plate 10 110, and the ring plate 101 , ring plate two 102, ring plate three 103, ring plate four 104, ring plate five 105, ring plate six 106, ring plate seven 107, ring plate eight 108, ring plate nine 109 and ring plate ten 110 are stacked in sequence and fixed by adhesive, and the ring plate one 101, ring plate two 102, ring plate three 103, ring plate four 104, ring plate five 105, ring plate six 106, ring plate seven 107, ring plate eight 108, ring plate nine 109 and ring plate ten 110 are kept coaxially distributed;

[0035] A cylindrical channel 111 is opened in the middle of the ring plate 101 to the ring plate 5 105, and a conical channel 112 is opened in the middle of the ring plate 10 110 to the ring plate 5 105. The cylindrical channel 111 is connected to the conical channel 112, and the cylindrical channel 111 and the conical channel 112 are coaxially distributed with the axis of the furnace roller channel block body 1. Specifically, the length of the cylindrical channel 111 in the ring plate 5 105 is set to 28±3mm, that is, the connection transition line between the cylindrical channel 111 and the conical channel 112 is located at the middle layer inside the ring plate 5 105;

[0036] The inner taper of the conical channel 112 is C=1:1.86, which is used to improve the fit between the furnace roller channel block body 1 and the furnace roller tapered transition, improve the sealing performance between the furnace roller channel block body 1 and the furnace roller, effectively prevent the high temperature heat of the furnace roller from being conducted outward, and avoid the problem that the temperature on the furnace roller bearing side increases rapidly, causing bearing damage, and affecting the transmission and service life of the furnace roller;

[0037] A plurality of strip grooves 2 are provided on the outer side of the furnace roller channel block body 1, and a pre-installed sheet 3 is embedded in the strip groove 2, which is used for pre-joining and coaxial positioning of a plurality of ring plates of the furnace roller channel block body 1;

[0038] Specifically, the ring plate 101, the ring plate 2 102, the ring plate 3 103, the ring plate 4 104, the ring plate 5 105, the ring plate 6 106, the ring plate 7 107, the ring plate 8 108, the ring plate 9 109 and the ring plate 10 110 are all set as aluminum silicate fiberboards, and the thickness of the ten layers of aluminum silicate fiberboards are equal;

[0039] The length of the strip groove 2 is at least the thickness of three layers of aluminum silicate fiberboard. The preferred embodiment given in the present application is that the length of the pre-installed sheet 3 is equal to the thickness of the three layers of aluminum silicate fiberboard, and the number of the strip grooves 2 is set to eight. The eight strip grooves 2 are distributed in a staggered manner around the furnace roller channel block body 1. The multiple strip grooves 2 are distributed in a staggered manner, so that the ten layers of aluminum silicate fiberboard can be quickly pre-installed and positioned without unobstructed gaps, thereby preventing heat waves from passing directly through the gaps. Combined with the heat insulation characteristics of the aluminum silicate fiberboard, the heat insulation effect of the furnace roller channel block body 1 is guaranteed, and the safety of the furnace roller operation is improved;

[0040] The pre-installed sheet 3 is glued and fixed to the furnace roller channel block body 1, and the pre-installed sheet 3 is in contact with the strip groove 2. The outer arc surface of the pre-installed sheet 3 matches the outer arc surface of the furnace roller channel block body 1, ensuring the integrity and smoothness of the outer arc surface of the furnace roller channel block body 1 and reducing the loss problem during the operation of the furnace roller.

[0041] Specifically, corresponding numbers are set on the ring plate 101, the ring plate 2 102, the ring plate 3 103, the ring plate 4 104, the ring plate 5 105, the ring plate 6 106, the ring plate 7 107, the ring plate 8 108, the ring plate 9 109 and the ring plate 10 110, and each aluminum silicate fiber board is provided with a notch on the outer side, and the notches on the three adjacent layers of aluminum silicate fiber boards together form a strip groove 2. By numbering 1-10, the ring plate 101, the ring plate 2 102, the ring plate 3 103, the ring plate 4 104, the ring plate 5 105, the ring plate 6 106, the ring plate 7 107, the ring plate 8 108, the ring plate 9 109 and the ring plate 10 110 are quickly stacked in a corresponding manner, and then the aluminum silicate fiber boards and the corresponding numbers 1-3, 2-4, 3-5, 4-6, 5-7, 6-8, 7-9, 8-10 are stacked in a corresponding manner. The notches on the surface thereof correspond to each other, so that the ring plate 1 101, the ring plate 2 102, the ring plate 3 103, the ring plate 4 104, the ring plate 5 105, the ring plate 6 106, the ring plate 7 107, the ring plate 8 108, the ring plate 9 109 and the ring plate 10 110 are precisely docked. After docking, a plurality of pre-installed sheets 3 are embedded in each strip groove 2 and fixed with glue. Finally, glue is evenly filled between the ring plates 101, the ring plates 2 102, the ring plates 3 103, the ring plates 4 104, the ring plates 5 105, the ring plates 6 106, the ring plates 7 107, the ring plates 8 108, the ring plates 9 109 and the ring plates 10 110, and pressed to obtain the furnace roller channel block body 1, wherein a smooth cylindrical channel 111 and a conical channel 112 are formed inside, so that it is convenient to be sleeved on the outside of the furnace roller for heat insulation and protection;

[0042] During use, the heat treatment furnace is shut down for maintenance, damaged furnace rollers and bearings are replaced, and new furnace roller channels are installed on both sides of the furnace rollers. The operation of the newly replaced furnace rollers is tracked, the bearing operating temperature is measured online, and the sealing performance and thermal insulation effect of the furnace roller channel blocks are determined to meet the performance requirements of long-term high-temperature operation of the furnace rollers.

[0043] Specifically, the pre-installed sheet 3 is made of silicon carbide material, which is convenient for fixed splicing with the aluminum silicate fiberboard, and the silicon carbide material has a heat insulation effect.

[0044] Specifically, a C-shaped chamfer 4 is provided on one side of the outer end surface of the ring plate 110 to facilitate the installation of the furnace roller channel block body 1 on the outer wall of the furnace shell and prevent damage to the furnace roller channel block body 1 due to forced installation.

[0045] Specifically, the wall thickness of the furnace roller channel block body 1 at the cylindrical channel 111 is 157±3 mm, and the wall thickness of the end of the ring plate + 110 is 83±3 mm.

[0046] In order to more intuitively understand the improvements made by the utility model, the present application provides the following Figure 8 A specific embodiment structure is shown, and a comparative example is also given. Figure 7 The existing comparative example shown.

[0047] The structures given in the comparative example and this embodiment both use 10 layers of aluminum silicate fiberboard stacked together, with a total thickness of 505 mm, wherein the thickness of each layer of aluminum silicate fiberboard is 50.5 mm;

[0048] from Figure 7 It can be seen that the transition line between the cylindrical channel 111 and the conical channel 112 is located in the fourth aluminum silicate fiber board. A specific size of the comparative example is as follows:

[0049] The cylindrical channel 111 is 160 mm long, the conical channel 112 is 345 mm long, and the diameters of the two ends are 146 mm and 278 mm respectively.

[0050] from Figure 8 It can be seen that the transition line between the cylindrical channel 111 and the conical channel 112 is located in the fifth aluminum silicate fiber board. A specific size of the embodiment structure is as follows:

[0051] The cylindrical channel 111 is 230 mm long, the length of the cone end is 275 mm, and the diameters of the two ends are 130 mm and 278 mm respectively. That is, the inner taper of the furnace roller channel block body 1 is C=1:1.86;

[0052] In addition, compared with the comparative example, the gap of the outer cylindrical end of this embodiment is reduced by 146-130 / 2=8 mm, and the length of the outer cylindrical end is extended by 230-160=70 mm.

[0053] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A furnace roller channel block structure for a heat treatment furnace, comprising a furnace roller channel block body (1), wherein the furnace roller channel block body (1) is sleeved at a conical transition of the furnace roller, so that the furnace roller channel block body (1) and the furnace roller are gap-matched, characterized in that: The furnace roller channel block body (1) comprises a ring plate one (101), a ring plate two (102), a ring plate three (103), a ring plate four (104), a ring plate five (105), a ring plate six (106), a ring plate seven (107), a ring plate eight (108), a ring plate nine (109) and a ring plate ten (110), and the ring plate one (101), the ring plate two (102), the ring plate three (103), the ring plate four (104), the ring plate five (105), the ring plate six (106), the ring plate seven (107), the ring plate eight (108), the ring plate nine (109) and the ring plate ten (110) are sequentially stacked and glued to maintain coaxial distribution; A cylindrical channel (111) is provided in the middle of the ring plates 1 (101) to 5 (105), and a conical channel (112) is provided in the middle of the ring plates 10 (110) to 5 (105), the cylindrical channel (111) is connected to the conical channel (112), and the cylindrical channel (111) and the conical channel (112) are both coaxially distributed with the axis of the furnace roller channel block body (1); The outer side of the furnace roller channel block body (1) is provided with a plurality of strip grooves (2), and the strip grooves (2) are embedded with pre-installed sheets (3) for pre-joining and coaxial positioning of a plurality of ring plates of the furnace roller channel block body (1); The pre-installed sheet (3) is glued to the furnace roller channel block body (1), and the pre-installed sheet (3) is fitted with the strip groove (2), and the outer arc surface of the pre-installed sheet (3) matches the outer arc surface of the furnace roller channel block body (1).

2. The roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: The inner taper of the conical channel (112) is C=1:1.86, which is used to improve the fit between the furnace roller channel block body (1) and the conical transition of the furnace roller.

3. The roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: The ring plate one (101), ring plate two (102), ring plate three (103), ring plate four (104), ring plate five (105), ring plate six (106), ring plate seven (107), ring plate eight (108), ring plate nine (109) and ring plate ten (110) are all configured as aluminum silicate fiberboards, and the thicknesses of the ten layers of aluminum silicate fiberboards are all equal.

4. The roller channel block structure for a heat treatment furnace according to claim 3, characterized in that: The ring plate one (101), the ring plate two (102), the ring plate three (103), the ring plate four (104), the ring plate five (105), the ring plate six (106), the ring plate seven (107), the ring plate eight (108), the ring plate nine (109) and the ring plate ten (110) are provided with corresponding numbers, and each aluminum silicate fiber plate is provided with a notch on the outer side, and the notches on the three adjacent layers of aluminum silicate fiber plates together form a strip groove (2).

5. The roller channel block structure for a heat treatment furnace according to claim 4, characterized in that: The length of the pre-installed sheet (3) is equal to the thickness of the three-layer aluminum silicate fiberboard, the number of the strip grooves (2) is set to eight, and the eight strip grooves (2) are distributed in a staggered manner around the furnace roller channel block body (1).

6. The roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: The pre-installed sheet (3) is made of silicon carbide material.

7. The furnace roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: A C-shaped chamfer (4) is provided on one side of the outer end surface of the ring plate ten (110).

8. The furnace roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: The wall thickness of the furnace roller channel block body (1) at the cylindrical channel (111) is 157±3 mm, and the wall thickness at the end of the ring plate ten (110) is 83±3 mm.

9. The furnace roller channel block structure for a heat treatment furnace according to claim 1, characterized in that: The length of the cylindrical channel (111) in the ring plate five (105) is set to 28±3 mm.

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