Downdraft kiln dome forming mold

Abstract

The utility model discloses the vault forming die of down draught kiln, including two gaps setting down draught kiln side wall still includes forming die lower mould and forming die upper mould, the top of forming die lower mould is fixedly provided with the forming part of arch, and the top surface of forming part is cambered surface, forming die upper mould includes the forming cover plate of arch, and the forming cover plate sets up at the top of down draught kiln side wall and is detachably connected with down draught kiln side wall, and the top of forming cover plate is equipped with the open -and -close feeding opening, the front and rear end of forming cover plate all are fixedly connected with the sealing plate of being inverted in the bottom of forming part, and the forming cover plate and forming part cooperate and form the closed cavity, the utility model discloses can effectively reduce the construction difficulty of down draught kiln vault structure, improve the construction efficiency of vault structure, and the casted refractory material slurry can directly solidify in the top of side wall to guarantee the connecting strength and sealing property between vault and side wall, the forming die in the utility model discloses can be repeatedly used, can effectively reduce the construction cost of down draught kiln.

Description

Technical Field

[0001] This utility model relates to the field of construction technology for downdraft kilns, and in particular to a mold for forming the arch of a downdraft kiln. Background Technology

[0002] A down-draft kiln is an intermittent firing kiln mainly used in industries such as metallurgy and chemicals. The structure of a down-draft kiln primarily consists of side walls and an arched roof atop the side walls. Currently, down-draft kilns are mainly constructed using refractory bricks through masonry work. However, the arched roof structure is more difficult to construct than the side walls due to its curved shape and the fact that it only connects to the side walls at the edges, with no supporting structure in the center. This results in lower construction efficiency and greater labor intensity for construction workers.

[0003] Utility model patent document CN2259599Y discloses a vertical suspended-ceiling down-draft kiln, which mainly consists of a furnace cover, furnace wall, furnace chamber, furnace liner, furnace bottom, flue, and burner nozzle. The patent's technical solution discloses that the furnace liner includes a vertical wall made of furnace liner bricks and a grid rod mounted on top of it. The furnace wall is a multi-layered composite brick masonry structure, and the furnace cover can be suspended and placed on the furnace wall. It is clear that the furnace wall and furnace liner in this utility model are constructed using masonry, while the furnace cover is installed on the furnace wall using a hoisting method. Because the furnace cover is manufactured separately and assembled by hoisting, the connection strength and sealing performance between the furnace cover and the furnace wall may be inferior compared to directly constructing the furnace cover on the furnace wall. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a mold for forming the arch of a downdraft kiln that can effectively reduce the difficulty of arch construction, improve construction efficiency, and ensure the connection strength and sealing between the arch and the side wall of the downdraft kiln.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an arched forming mold for a downdraft kiln, including two downdraft kiln side walls with gaps, and a lower forming mold and an upper forming mold; an arched forming part is fixedly provided on the top of the lower forming mold, and the top surface of the forming part is an arc surface; the upper forming mold includes an arched forming cover plate, which is set on the top of the downdraft kiln side wall and detachably connected to the downdraft kiln side wall, and the top of the forming cover plate is provided with an openable and closable feeding port; sealing plates that are upside down and attached to the bottom of the forming part are fixedly connected to the front and rear ends of the forming cover plate, and the forming cover plate and the forming part cooperate to form a closed cavity.

[0006] As a further improvement to the above solution: the width of the forming part of the lower mold of the forming mold is greater than the distance between the two downdraft kiln side walls, and the bottom edge of the forming part abuts against the top surface of the downdraft kiln side wall to form a sealing fit.

[0007] As a further improvement to the above solution: a movable component is provided at the bottom of the lower mold of the forming mold.

[0008] As a further improvement to the above solution, it also includes a reinforcing member disposed in the cavity, the reinforcing member comprising a plurality of reinforcing rods connected to the inner side of the molded cover plate and reinforcing ribs connected in series and fixedly connected to the reinforcing rods.

[0009] As a further improvement to the above solution: the reinforcing rod is a V-shaped reinforcing rod formed by bending in the middle, the middle part of the V-shaped reinforcing rod is connected to the molded cover plate, and the reinforcing rib is connected in series with the bent part of the V-shaped reinforcing rod and fixedly connected.

[0010] As a further improvement to the above solution: the edge of the molded cover plate is fixedly connected to a fastening plate; the fastening plate is an L-shaped vertical bending plate, one of the bending parts of the fastening plate is fixedly connected to the molded cover plate, and the other bending part of the fastening plate is attached to the top of the side wall of the downdraft kiln and detachably connected to the side wall of the downdraft kiln.

[0011] As a further improvement to the above solution: a connecting screw is pre-embedded in the top of the downdraft kiln sidewall, and a connecting through hole that mates with the connecting screw is provided on the bent part of the fastening plate that matches the downdraft kiln sidewall. After the connecting screw passes through the corresponding connecting through hole, it is locked and fixed by a fastening nut.

[0012] The beneficial effects of this utility model are as follows: This utility model uses a lower mold and an upper mold to form a casting mold, which cooperates with the side wall of the downdraft kiln to form a cavity for forming the arch structure of the downdraft kiln. The casting construction of the arch structure can be quickly completed by pouring refractory slurry into the cavity, eliminating the need for refractory bricks to be laid one by one. This effectively reduces the construction difficulty of the downdraft kiln arch structure and improves the construction efficiency of the arch structure. Furthermore, the poured refractory slurry can be directly solidified on the top of the side wall to ensure the connection strength and sealing between the arch and the side wall. The molding mold in this utility model can be reused, which can effectively reduce the construction cost of the downdraft kiln. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] The markings in the diagram are as follows: 100-side wall of downdraft kiln, 110-connecting screw, 200-lower mold of forming mold, 210-forming part, 220-moving part, 300-upper mold of forming mold, 310-forming cover plate, 320-feeding port, 330-fastening plate, 410-reinforcing rod, 420-reinforcing rib. Detailed Implementation

[0015] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0016] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] The arch forming mold of the downdraft kiln disclosed in this utility model utilizes the existing masonry construction of the downdraft kiln side wall 100, and adopts a forming mold in conjunction with the downdraft kiln side wall 100 to integrally form the arch structure of the downdraft kiln through a casting construction method. This can reduce the construction difficulty of the arch structure and improve the construction efficiency of the arch structure while ensuring strength and sealing.

[0018] like Figure 1 As shown, in addition to the existing kiln sidewalls 100 that have been completed through masonry construction, the forming mold for the arch of the downdraft kiln also includes a casting forming mold consisting of a lower forming mold 200 and an upper forming mold 300. Specifically, the lower forming mold 200 has an arched forming part 210 fixedly provided on its top. The top surface of the forming part 210 is curved, and the curvature of the top curved surface of the forming part 210 is adapted to the bottom surface of the downdraft kiln arch structure to be formed. The upper forming mold 300 includes an arched forming cover plate 310. The inner side of the forming cover plate 310 is curved, and the curved surface of the forming cover plate 310 is adapted to the top surface of the downdraft kiln arch structure to be formed. A molding cover plate 310 is disposed on the top of the downdraft kiln side wall 100 and detachably connected to the downdraft kiln side wall 100. The top of the molding cover plate 310 is provided with an openable and closable feeding port 320. The front and rear ends of the molding cover plate 310 are fixedly connected to sealing plates that are overturned and fastened to the bottom of the molding part 210. The molding cover plate 310 and the molding part 210 cooperate to form a closed cavity. The two sides of the molding cover plate 310 are respectively connected to the top of the two sides of the downdraft kiln side wall 100. The sealing plates connected to the front and rear ends of the molding cover plate 310 are fastened to the bottom of the molding part 210 by overturning, thereby fixing and sealing all four sides of the molding cover plate 310. The space between the forming cover plate 310 and the forming part 210 is the cavity for casting the arch. Refractory material slurry is poured into the cavity through the feeding port 320 on the forming cover plate 310. After the filling is completed, the vibrator is inserted into the cavity through the feeding port 320 to vibrate and compact the slurry. After the refractory material slurry has solidified, the forming cover plate 310 is removed from the top of the side wall 100 of the down-draft kiln, and the lower mold 200 of the forming mold is pushed out. The casting construction of the down-draft kiln arch structure is completed.

[0019] Furthermore, in order to ensure the sealing of the bottom of the cavity, the width of the forming part 210 of the lower mold 200 of the present invention is limited to be greater than the distance between the two downdraft kiln side walls 100, and the bottom height of the forming part 210 is limited to be higher than the top height of the downdraft kiln side wall 100. This allows the bottom edge of the forming part 210 to abut against the top surface of the downdraft kiln side wall 100 to form a sealed fit, and the refractory slurry after pouring is not prone to leakage from the edge of the forming part 210.

[0020] The molding die in this invention is reusable. Before casting, the lower mold 200 needs to be moved between the two side walls 100 of the downdraft kiln. After casting, the lower mold 200 is moved outside the downdraft kiln. To facilitate the movement of the lower mold 200, such as... Figure 1 As shown, a movable component 220 can be provided at the bottom of the lower mold 200 of the forming mold. The movable component 220 can be a roller or a slider guide structure.

[0021] Furthermore, in order to enhance the strength of the arch structure after pouring, such as Figure 1 As shown, this utility model also includes a reinforcing component inside the cavity of the casting mold. The reinforcing component consists of two types of reinforcing parts: reinforcing rods 410 and reinforcing ribs 420, both of which are steel reinforcement structures. Multiple reinforcing rods 410 are detachably connected to the inner side of the forming cover plate 310, and the reinforcing ribs 420 connect multiple reinforcing rods 410 in series and are fixedly connected to them. To facilitate disassembly of the casting mold after casting and to allow the reinforcing rods 410 to easily detach from the forming cover plate 310, spot welding can be used to fix the reinforcing rods 410 to the inner side of the forming cover plate 310. After casting, the spot weld of the reinforcing rods 410 can be broken by striking the forming cover plate 310 upwards.

[0022] like Figure 1 As shown, to improve the bonding strength between the reinforcing rod 410 and the refractory material after casting, the reinforcing rod 410 in this invention adopts a V-shaped reinforcing rod. The V-shaped reinforcing rod is formed by bending the middle part of the reinforcing bar, and the angle between the two bent parts of the reinforcing bar is less than 90°. During connection, the middle part of the V-shaped reinforcing rod is connected to the inner side of the forming cover plate 310 by spot welding, and the reinforcing rib 420 is connected in series with the bent part of the V-shaped reinforcing rod and fixedly connected by welding.

[0023] like Figure 1As shown, in this utility model, the molded cover plate 410 and the side wall 100 of the downdraft kiln are detachably connected by the cooperation of the fastening plate 330 and the connecting screw 110. Specifically, a fastening plate 330 is fixedly connected to the edge of the forming cover plate 310. The fastening plate 330 is an L-shaped vertical bending plate. One of the bending parts of the fastening plate 330 is integrally connected to the forming cover plate 310. The fastening plate 330 can be formed directly by bending the edge of the forming cover plate 310. The other bending part of the fastening plate 330 is attached to the top of the downdraft kiln side wall 100. A connecting screw 110 is pre-embedded in the top of the downdraft kiln side wall 100. The bending part of the fastening plate 330 that cooperates with the downdraft kiln side wall 100 is provided with a connecting through hole that cooperates with the connecting screw 110. After the connecting screw 110 passes through the corresponding connecting through hole, the fastening plate 330 is locked and fixed to the top of the downdraft kiln side wall 100 by a fastening nut. The L-shaped fastening plate 330 connected to the edge of the molded cover plate 410 can effectively improve the sealing effect between the molded cover plate 410 and the downdraft kiln side plate 100, and also facilitates the connection and fixation with the connecting screw 110.

Claims

1. A mold for forming the dome of a downdraft kiln, comprising two interlocking downdraft kiln sidewalls (100), characterized in that: It also includes a lower mold (200) and an upper mold (300); the top of the lower mold (200) is fixedly provided with an arched forming part (210), and the top surface of the forming part (210) is an arc surface; the upper mold (300) includes an arched forming cover plate (310), the forming cover plate (310) is set on the top of the downdraft kiln side wall (100) and is detachably connected to the downdraft kiln side wall (100), and the top of the forming cover plate (310) is provided with an openable and closable feeding port (320); the front and rear ends of the forming cover plate (310) are fixedly connected with sealing plates that are upside down on the bottom of the forming part (210), and the forming cover plate (310) and the forming part (210) cooperate to form a closed cavity.

2. The arch forming mold for a downdraft kiln as described in claim 1, characterized in that: The width of the forming part (210) of the lower mold (200) of the forming mold is greater than the distance between the two downdraft kiln side walls (100), and the bottom edge of the forming part (210) abuts against the top surface of the downdraft kiln side wall (100) to form a sealed fit.

3. The arch forming mold for a downdraft kiln as described in claim 1, characterized in that: The bottom of the lower mold (200) of the molding die is provided with a movable part (220).

4. The arch forming mold for a downdraft kiln as described in claim 1, characterized in that: It also includes a reinforcing member disposed in the cavity, the reinforcing member comprising a plurality of reinforcing rods (410) that can be connected to the inner side of the molded cover plate (310) and reinforcing ribs (420) that are connected in series and fixedly connected to the reinforcing rods (410).

5. The arch forming mold for a downdraft kiln as described in claim 4, characterized in that: The reinforcing rod (410) is a V-shaped reinforcing rod formed by bending in the middle. The middle part of the V-shaped reinforcing rod is connected to the molded cover plate (310). The reinforcing rib (420) is connected in series with the bent part of the V-shaped reinforcing rod and fixedly connected.

6. The arch forming mold for a downdraft kiln as described in claim 1, characterized in that: The edge of the molded cover plate (310) is fixedly connected to a fastening plate (330); the fastening plate (330) is an L-shaped vertical bending plate, one of the bending parts of the fastening plate (330) is fixedly connected to the molded cover plate (310), and the other bending part of the fastening plate (330) is attached to the top of the downdraft kiln side wall (100) and detachably connected to the downdraft kiln side wall (100).

7. The arch forming mold for a downdraft kiln as described in claim 6, characterized in that: A connecting screw (110) is pre-embedded in the top of the downdraft kiln side wall (100). The fastening plate (330) has a connecting through hole that matches the connecting screw (110) on the bent part that matches the downdraft kiln side wall (100). After the connecting screw (110) passes through the corresponding connecting through hole, it is locked and fixed by a fastening nut.

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