Simple fixing structure for calcination furnace sand cover purging pipe
By simplifying the design of the L-shaped fixing plate and U-shaped buckle of the calcining furnace purge pipe, the installation and maintenance difficulties caused by the complex structure in the existing technology are solved, and stable operation and convenient operation in high-temperature environments are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI WANXUN KENENG CONTROL ENG CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
The existing sealing structure of the calcining furnace purge pipe has poor operational stability under high-temperature conditions, and its complex structure makes installation and maintenance difficult and prone to failure.
The structure is simplified by using L-shaped fixing plates, U-shaped buckles and clamps, and the long hole design enables flexible adjustment and quick locking of the purge tube, with high positioning accuracy and mechanical contact positioning.
It significantly reduces the difficulty of installation and maintenance in high-temperature environments, improves the ease of operation and reliability of the purge pipe, and extends its service life.
Smart Images

Figure CN224552125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial kiln equipment technology, specifically a simple fixing structure for the sand seal cover purging pipe of a calcining furnace. Background Technology
[0002] Carbon calcining furnaces can perform air-isolated combustion of carbon materials in a sealed environment, causing moisture and volatiles in the material to escape at high temperatures. This creates negative pressure within the furnace, leading to volume shrinkage and density changes in the material, thus significantly improving its overall performance. During this process, a certain amount of floating ash accumulates inside the furnace, requiring periodic cleaning via a purge pipe. The sealing performance between the purge pipe and the calcining furnace is crucial during purge operations. Currently, a combination of components such as sealing grooves, sleeves, positioning blocks, limiting blocks, and sealing flanges is commonly used to fix and seal the purge pipe. However, this type of structure has many components, resulting in poor operational stability under high-temperature conditions, and its complexity also leads to difficulties in installation and maintenance. Especially in harsh environments where purge pipes are installed, existing sealing structures are prone to failure, frequently causing operational problems and increasing unnecessary maintenance burdens. Therefore, this application proposes a simplified fixing structure for the purge pipe of a calcining furnace sand seal cover to solve the above-mentioned technical problems. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this utility model provides a simple fixing structure for the sand seal purge pipe of a calcining furnace, thus solving the technical problems mentioned in the background.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a simple fixing structure for a sand seal cover purging pipe of a calcining furnace, comprising a sand seal cover with a round hole, and a vertical insertion pipe fitted into the round hole on the sand seal cover. An L-shaped fixing plate is attached to the top side of the sand seal cover, and a bolt passes through the fixing hole on the horizontal part of the fixing plate and connects to the top side of the sand seal cover. A U-shaped buckle is fitted on the top side of the vertical insertion pipe, and the two ends of the U-shaped buckle are fitted into the fixing holes on the vertical part of the fixing plate. U-shaped buckle nuts are connected to the two ends of the U-shaped buckle.
[0007] Preferably, the top side of the vertical insertion tube is fitted with a clamp, and the surface of the clamp is galvanized.
[0008] Preferably, the fixing holes on the horizontal part and the fixing holes on the vertical part of the fixing plate are both elongated holes.
[0009] Preferably, a U-shaped buckle baffle is provided at the fixing hole on the vertical part of the fixing plate, and the two ends of the U-shaped buckle pass through the fixing holes on both sides of the U-shaped buckle baffle.
[0010] Preferably, an indicator red line is provided at the top of the vertical insertion tube.
[0011] Preferably, the vertical insertion tube is provided with a purge hole.
[0012] (III) Beneficial Effects
[0013] The beneficial effects of this utility model are as follows:
[0014] This simplified fixing structure for the purging pipe of the calcining furnace sand seal cover significantly simplifies the overall structure and reduces the number of parts by incorporating components such as an L-shaped fixing plate, U-shaped buckles, and clamps. This effectively reduces the difficulty of installation and maintenance in high-temperature and harsh environments. The U-shaped buckle, combined with the elongated hole design, allows for flexible adjustment and quick locking of the purging pipe within a certain range, enhancing adaptability and ease of operation. Furthermore, the positioning is entirely achieved through mechanical contact, improving positioning accuracy, resulting in smoother operation, increased reliability, and extended service life of the purging pipe. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;
[0016] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;
[0017] Figure 3 This is a schematic diagram of the planar structure of the vertical insertion tube of this utility model.
[0018] In the diagram: 1. Vertical insertion tube, 2. Sand seal cap, 3. Clamp, 4. Fixing plate, 5. Bolt, 6. U-shaped buckle, 7. U-shaped buckle nut, 8. U-shaped buckle baffle. Detailed Implementation
[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] like Figure 1-3As shown, this utility model provides a technical solution: a simple fixing structure for a sand seal cover purge pipe of a calcining furnace, including a sand seal cover 2 with a round hole, and a vertical insertion pipe 1 fitted into the round hole on the top side of the sand seal cover 2. A red indicator line is provided at the top of the vertical insertion pipe 1, and a purge hole is provided on the vertical insertion pipe 1. A clamp 3 is fitted onto the top side of the vertical insertion pipe 1, and the surface of the clamp 3 is galvanized. The clamp 3 can protect the vertical insertion pipe 1. An L-shaped fixing plate 4 is attached to the top side of the sand seal cover 2, and a bolt 5 passes through the fixing hole in the horizontal part of the fixing plate 4 and connects to the top side of the sand seal cover 2. Both the horizontal and vertical fixing holes on the fixing plate 4 are elongated holes, and a U-shaped buckle 6 is designed to fit the elongated holes. This design enables flexible adjustment and rapid locking of the vertical insertion tube 1 within a certain range, enhancing its adaptability and ease of operation. A U-shaped buckle 6 is fitted onto the top side of the vertical insertion tube 1, with both ends of the U-shaped buckle 6 fitted into the fixing holes on the vertical part of the fixing plate 4. U-shaped buckle nuts 7 are connected to both ends of the U-shaped buckle 6. A U-shaped buckle baffle 8 is provided at the fixing hole on the vertical part of the fixing plate 4, with both ends of the U-shaped buckle 6 passing through the fixing holes on both sides of the U-shaped buckle baffle 8. First, a round hole is drilled on the sand seal cover 2, the size of which matches the vertical insertion tube 1. After drilling the hole, the fixing plate 4 is fixed to the sand seal cover 2 with bolts 5. Then, the U-shaped buckle 6, U-shaped buckle nuts 7, and U-shaped buckle baffle 8 are installed on the fixing plate 4. Figure 1 , 2 As shown, the U-shaped clip nut 7 is not tightened first. The clamp 3 is put on the vertical insertion tube 1 and inserted into the round hole on the sand seal cover 2 and the U-shaped clip 6. It is installed in the appropriate position according to the red line markings on the vertical insertion tube 1. Then the U-shaped clip nut 7 is tightened to fix the vertical insertion tube 1. This greatly simplifies the overall structure, significantly reduces the number of parts, and effectively reduces the difficulty of installation and maintenance in high temperature and harsh environments. When the vertical insertion tube 1 is damaged and needs to be replaced, the U-shaped clip nut 7 can be loosened, the vertical insertion tube 1 can be removed, a new vertical insertion tube 1 can be inserted, and then the U-shaped clip nut 7 can be tightened. This realizes the quick replacement of the vertical insertion tube 1 and the reuse of components such as the fixing plate 4 and the clamp 3.
[0021] The operational steps for this application are as follows:
[0022] First, drill a round hole in the sand seal cover 2, the hole size of which matches the vertical insertion tube 1. After drilling the hole, fix the fixing plate 4 to the sand seal cover 2 with bolts 5. Then, install the U-shaped clip 6, U-shaped clip nut 7, and U-shaped clip baffle 8 on the fixing plate 4. Figure 1 , 2 As shown, the U-shaped buckle nut 7 is not tightened first. The clamp 3 is put on the vertical insertion tube 1 and inserted into the round hole on the sand seal cover 2 and the U-shaped buckle 6. It is installed in the appropriate position according to the red line markings on the vertical insertion tube 1. Then the U-shaped buckle nut 7 is tightened to fix the vertical insertion tube 1.
[0023] When the vertical insertion tube 1 is damaged and needs to be replaced, the U-shaped clip nut 7 can be loosened, the vertical insertion tube 1 can be removed, a new vertical insertion tube 1 can be inserted, and then the U-shaped clip nut 7 can be tightened to achieve quick replacement of the vertical insertion tube 1 and reuse of components such as the fixing plate 4 and the clamp 3.
[0024] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A simple fixing structure for a purging pipe of a calcining furnace sand seal cover, characterized in that: The device includes a sand seal cover (2) with a round hole, and the top side of the vertical insertion tube (1) is fitted into the round hole on the sand seal cover (2). The top side of the sand seal cover (2) is fitted with an L-shaped fixing plate (4), and a bolt (5) passes through the fixing hole on the horizontal part of the fixing plate (4) and connects to the top side of the sand seal cover (2). The top side of the vertical insertion tube (1) is fitted with a U-shaped buckle (6), and the two ends of the U-shaped buckle (6) are fitted into the fixing holes on the vertical part of the fixing plate (4), and the two ends of the U-shaped buckle (6) are connected with U-shaped buckle nuts (7).
2. The simple fixing structure for the purging pipe of the sand seal cover of a calcining furnace according to claim 1, characterized in that: The top side of the vertical insertion tube (1) is fitted with a clamp (3), and the surface of the clamp (3) is galvanized.
3. A simple fixing structure for a purging pipe of a calcining furnace sand seal cover according to claim 1, characterized in that: The fixing holes on the horizontal part and the fixing holes on the vertical part of the fixing plate (4) are both elongated holes.
4. A simple fixing structure for a purging pipe of a calcining furnace sand seal cover according to claim 1, characterized in that: The fixing plate (4) has a U-shaped buckle baffle (8) at the fixing hole in the vertical part, and the two ends of the U-shaped buckle (6) pass through the fixing holes on both sides of the U-shaped buckle baffle (8).
5. A simple fixing structure for a purging pipe of a calcining furnace sand seal cover according to claim 1, characterized in that: The top of the vertical insertion tube (1) is equipped with an indicator red line.
6. A simple fixing structure for a purging pipe of a calcining furnace sand seal cover according to claim 1, characterized in that: The vertical insertion tube (1) is provided with a purge hole.