Manufacturing mold of annular refractory silica brick for coke oven

Abstract

The utility model provides a mould for manufacturing an annular fire-resistant silica brick for a coke oven, which comprises an annular outer sleeve, two semi-annular inner sleeves are arranged in the annular outer sleeve, the two semi-annular inner sleeves can be assembled into an annular structure in the annular outer sleeve, and the outer diameter of each semi-annular inner sleeve is consistent with the inner diameter of the annular outer sleeve. An upper ring sleeve and a lower ring sleeve which are symmetrical are arranged in an annular structure formed by assembling the two semicircular inner sleeves, a mold core penetrating through the two ring sleeves is arranged in the center of the two ring sleeves, and the outer diameter of the mold core is consistent with the inner diameter of the ring sleeves; the forming mold is reasonable in design structure and convenient to use, the forming purpose of the annular forming cavity is achieved in the mode that the two semi-annular inner sleeves capable of being assembled and the two annular sleeves are matched with the mold core, and therefore the annular refractory brick with the protruding structure on the outer wall is manufactured, and after a green brick is formed, the two semi-annular inner sleeves can be separated, and the production efficiency is improved. Therefore, the effect of quick demolding is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold design, and in particular relates to a mold for manufacturing annular refractory silicon bricks for a coke oven. Background Art

[0002] At present, modern coke ovens are huge thermal equipment built with thousands of brick types and tens of thousands of tons of refractory materials. Silica bricks are the main material for its masonry, forming the basic parts of the coke oven: regenerator walls, ramps, combustion chambers, carbonization chambers, furnace roofs, etc., accounting for 60%-70% of the total refractory bricks. Due to the variety of shapes of refractory silica bricks for coke ovens, different molds need to be made for the production of brick blanks.

[0003] like Figure 6 As shown, it is a refractory brick for coke oven, and its overall shape is annular structure, with a protruding structure in the middle of the outer wall, and the outer edges of the two ends form rounded corners. There is no mold for making such annular refractory bricks in the prior art. Therefore, there is an urgent need for a mold for making annular refractory silicon bricks for coke ovens to solve the problem of making annular refractory bricks. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a mold for making annular refractory silicon bricks for coke ovens. The mold has a reasonable design structure and is easy to use. Two assembleable semi-annular inner sleeves and two annular sleeves cooperate with a mold core to achieve the molding purpose of the annular molding cavity, thereby realizing the production of annular refractory bricks with a convex structure at the outer wall position. After the brick blank is formed, the two semi-annular inner sleeves can be separated to achieve the effect of rapid demoulding.

[0005] The technical scheme adopted by the utility model is: a manufacturing mold for annular refractory silica bricks for coke ovens, comprising an annular outer sleeve, the inner position of the annular outer sleeve is provided with two semi-annular inner sleeves, the two semi-annular inner sleeves can be assembled into an annular structure inside the annular outer sleeve, and the outer diameter of the semi-annular inner sleeve is consistent with the inner diameter of the annular outer sleeve, two upper and lower symmetrical ring sleeves are arranged inside the annular structure assembled by the two semi-annular inner sleeves, the center position of the two ring sleeves is provided with a mold core penetrating the two ring sleeves, the outer diameter of the mold core is consistent with the inner diameter of the ring sleeves, and an annular molding cavity of the refractory bricks is formed between the mold core, the two ring sleeves and the two semi-annular inner sleeves.

[0006] The inner wall of the annular forming cavity has a tapered surface which is symmetrical up and down relative to the horizontal center plane of the annular forming cavity, and the diameter of the tapered surface gradually decreases from the center of the annular forming cavity to both ends.

[0007] The outer diameter position of one end of the ring sleeve is provided with an annular extension portion extending axially and outwardly, and the interior of the annular extension portion is provided with a transition fillet, and the transition fillet is arranged tangent to the inner wall of the annular forming cavity.

[0008] The annular outer sleeve, the semi-annular inner sleeve and the mold core are all coaxially and arranged at the same height.

[0009] The horizontal center line of the annular molding cavity is located below the horizontal center line of the semi-annular inner sleeve.

[0010] The beneficial effects of the utility model are:

[0011] The utility model has a reasonable design structure and is easy to use. It adopts two assembleable semi-annular inner sleeves and two annular sleeves cooperating with a mold core to achieve the molding purpose of the annular molding cavity, thereby realizing the production of annular refractory bricks with a convex structure at the outer wall position. After the brick blank is formed, the two semi-annular inner sleeves can be separated to achieve the effect of rapid demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 It is an exploded view of the utility model;

[0014] Figure 3 It is a cross-sectional view of the semi-annular inner sleeve of the utility model;

[0015] Figure 4 It is a cross-sectional view of the ring sleeve of the utility model;

[0016] Figure 5 It is a cross-sectional view of the utility model;

[0017] Figure 6 This is a three-dimensional image of a brick.

[0018] Markings in the figure: 1, annular outer sleeve; 2, semi-annular inner sleeve; 21, tapered surface; 3, annular sleeve; 31, annular extension; 32, transition fillet; 4, mold core. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0020] As shown in the figure, a mold for making annular refractory silica bricks for coke ovens includes an annular outer sleeve 1, and the inner position of the annular outer sleeve 1 is provided with two semi-annular inner sleeves 2. The two semi-annular inner sleeves 2 can be assembled into an annular structure inside the annular outer sleeve 1, and the outer diameter of the semi-annular inner sleeve 2 is consistent with the inner diameter of the annular outer sleeve 1. The annular outer sleeve 1 serves as a radial positioning piece in the brick pressing process, which can effectively prevent the two semi-annular inner sleeves 2 that have been assembled into an annular structure from being separated. The two semi-annular inner sleeves 2 are provided mainly so that after the brick blank is formed, the two semi-annular inner sleeves 2 can be moved out along the axial direction of the annular outer sleeve 1, and after the two semi-annular inner sleeves 2 are separated from each other, a rapid demoulding effect can be achieved.

[0021] Two symmetrical upper and lower ring sleeves 3 are arranged inside the annular structure composed of two semi-annular inner sleeves 2. The center position of the two ring sleeves 3 has a mold core 4 that penetrates the two ring sleeves 3. The outer diameter of the mold core 4 is consistent with the inner diameter of the ring sleeve 3. The ring sleeve 3 is mainly used to limit the axial size of the forming cavity and to shape the end face shape of the brick blank. An annular forming cavity for refractory bricks is formed between the mold core 4, the two ring sleeves 3 and the two semi-annular inner sleeves 2.

[0022] The inner wall of the annular molding cavity has a conical surface 21 which is symmetrical up and down relative to the horizontal center plane of the annular molding cavity. The diameter of the conical surface 21 gradually decreases from the center of the annular molding cavity to both ends. This arrangement is mainly for molding the protruding structure on the outside of the brick. Since the middle part of the brick is convex, the brick cannot be taken out along the axial direction after molding. Therefore, two semi-annular inner sleeves 2 are designed to solve the demoulding problem.

[0023] The outer diameter position of one end of the ring sleeve 3 has an annular extension portion 31 extending axially and outwardly, and the interior of the annular extension portion 31 has a transition fillet 32, which is arranged tangent to the inner wall of the annular forming cavity. This arrangement is mainly to form a fillet structure on the outer diameter edge of the brick blank.

[0024] The annular outer sleeve 1, the semi-annular inner sleeve 2 and the mold core 4 are all coaxial and arranged at the same height.

[0025] The horizontal center line of the annular molding cavity is located below the horizontal center line of the semi-annular inner sleeve 2. This arrangement is because during production, it is necessary to fill the annular molding cavity with refractory material when the upper ring sleeve 3 is removed. When not pressed, the overall height of the refractory material is relatively high. When pressed, the upper ring sleeve 3 needs to move up and down. Therefore, this arrangement can reserve space for the upper ring sleeve 3 to move up and down to avoid falling off the core 4.

[0026] When the mold for making annular refractory silica bricks for coke oven is in use, the annular outer sleeve 1 is fixed on the workbench of the brick press, the two semi-annular inner sleeves 2 are assembled and placed inside the annular outer sleeve 1, and then the lower ring sleeve 3 is placed between the two semi-annular inner sleeves 2, and then the mold core 4 is passed through the ring sleeve 3. At this time, the refractory material can be filled into the mold, and finally the upper ring sleeve 3 is put on the mold core 4. The upper ring sleeve 3 is connected to the hammer head of the brick press and moves up and down under the drive of the brick press, so that the refractory material is compacted to form the brick blank. After that, the mold core 4 and the upper ring sleeve 3 are taken out, and then the two semi-annular inner sleeves 2 are separated for demoulding.

Claims

1. A mold for making annular refractory silica bricks for coke ovens, characterized in that: It includes an annular outer sleeve, and two semi-annular inner sleeves are arranged inside the annular outer sleeve. The two semi-annular inner sleeves can be assembled into an annular structure inside the annular outer sleeve, and the outer diameter of the semi-annular inner sleeve is consistent with the inner diameter of the annular outer sleeve. Two symmetrical upper and lower annular sleeves are arranged inside the annular structure assembled by the two semi-annular inner sleeves. The center position of the two annular sleeves has a mold core that passes through the two annular sleeves, and the outer diameter of the mold core is consistent with the inner diameter of the annular sleeves. An annular molding cavity for refractory bricks is formed between the mold core, the two annular sleeves and the two semi-annular inner sleeves.

2. The mold for making annular refractory silica bricks for coke oven according to claim 1, characterized in that: The inner wall of the annular forming cavity has a conical surface which is symmetrical up and down relative to the horizontal center plane of the annular forming cavity, and the diameter of the conical surface gradually decreases from the center of the annular forming cavity to both ends.

3. The mold for making annular refractory silica bricks for coke oven according to claim 2, characterized in that: An annular extension portion extending axially and outward is provided at the outer diameter position of one end of the annular sleeve. The interior of the annular extension portion has a transition fillet, and the transition fillet is tangent to the inner wall of the annular forming cavity.

4. The mold for making annular refractory silica bricks for coke oven according to claim 1, characterized in that: The annular outer sleeve, the semi-annular inner sleeve and the mold core are all coaxial and arranged at the same height.

5. The mold for making annular refractory silica bricks for coke oven according to claim 1, characterized in that: The horizontal center line of the annular molding cavity is located below the horizontal center line of the semi-annular inner sleeve.

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