A device for quickly clamping and sealing the cover of a holding furnace
The insulated furnace cover clamping device, which combines a reaction frame and bolt claws, solves the problems of cumbersome operation and easy loosening in the existing technology, and achieves a fast and reliable sealing effect, thereby improving the working efficiency and sealing reliability of the insulated furnace.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ASIMCO INT CASTING CO LTD SHANXI
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-26
AI Technical Summary
The existing clamping device for the insulated furnace cover is cumbersome and time-consuming to operate, and it is prone to loosening in high-temperature environments, resulting in poor sealing and affecting the sealing effect.
The combination structure of reaction frame, bolts and claws is adopted. The reaction frame is pushed by the bolts and the claws are hooked on the protrusions of the large furnace cover to achieve rapid clamping of the furnace cover, forming a rigid frame structure and ensuring that the sealing mortar is evenly compacted.
It achieves rapid and reliable sealing of the insulated furnace cover, shortens installation time, avoids the sealant from drying out and failing at high temperatures, improves sealing reliability and work efficiency, and reduces operational risks.
Smart Images

Figure CN224407626U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tooling and fixture technology, specifically relating to a device for quickly clamping and sealing the furnace lid of a heat preservation furnace. Background Technology
[0002] After inspecting or cleaning the insulation furnace, the furnace lid needs to be reinstalled. During installation, the furnace lid must be clamped tightly. Sealing putty needs to be applied during clamping to prevent air leakage during furnace operation. Due to the high temperature, clamping must be done quickly; otherwise, the sealing putty will dry out and fail to achieve a seal. The original design used a wedge-type tightening mechanism, which could not be tightened in one go and required multiple repetitions to complete the sealing. This resulted in leakage due to the wedge loosening at high temperatures. Therefore, it is necessary to design a new type of furnace lid clamping device specifically to solve the above problems. Utility Model Content
[0003] The purpose of this utility model is to provide a quick clamping and sealing device for a heat-insulating furnace cover, which can quickly install the furnace cover and ensure a sealing effect.
[0004] This utility model provides the following technical solution: a device for quickly clamping and sealing the furnace cover of a heat preservation furnace, including a reaction frame, bolts and claws; one end of the claw is fixed on the reaction frame and the other end is provided with a claw hook; the bolt is screwed into the screw hole on the reaction frame, and the bolt is used to push the reaction frame outward with the fulcrum of the top of the small furnace cover as support, and the claw hook of the claw is hooked on the protrusion of the large furnace cover to clamp the small furnace cover and the large furnace cover.
[0005] Furthermore, the chucks are arranged in a ring array around the bolt, and the number of chucks is greater than 2.
[0006] Furthermore, a pin is fixed to the top of the small furnace cover, and a sleeve is provided on the reaction frame. The top of the sleeve is provided with a threaded hole for connection with bolts, and the bottom of the sleeve is used to insert with the pin. The pin serves as a fulcrum to support the bolts inside the sleeve.
[0007] Furthermore, the reaction frame includes a top plate and a bottom plate, which are respectively connected to the top and bottom of the claw. The inner rings of the top plate and the bottom plate are connected to the sleeve. The top plate and the bottom plate have slots that respectively mate with the top rib and the bottom rib of the claw.
[0008] Furthermore, the furnace cover is equipped with intermittently distributed clamping plates, the number and spacing of which correspond to the clamping claws.
[0009] Furthermore, a nut is fixed to the top of the sleeve, and the bolt is screwed into the nut.
[0010] Compared with the prior art, the advantages of this utility model are:
[0011] This utility model provides a device for quickly clamping and sealing the furnace cover of a heat preservation furnace. Through innovative structural design, it significantly improves the efficiency of furnace cover installation and sealing reliability. It effectively overcomes the defects of the original wedge clamping device, such as cumbersome operation, long time consumption, and easy loosening and leakage. It realizes quick, one-time reliable clamping and sealing of the heat preservation furnace cover, significantly improves work efficiency, and ensures the sealing reliability during the operation of the heat preservation furnace.
[0012] The transmission method uses bolts to directly push the reaction frame, making operation simple and direct (only the bolts need to be tightened). Compared to the original wedge-type tightening method that requires repeated tapping, it can complete the clamping action in one go and quickly, effectively avoiding the problem of the sealant drying out and failing under high temperature due to long operation time.
[0013] The clamping claws are arranged in a ring array around the bolt (more than two in number), uniformly applying clamping force to the circumference of the furnace cover, ensuring that the sealing mortar is evenly compacted and forming a continuous and effective sealing ring. The claw hooks engage with the protrusions (or clamping plates) on the large furnace cover, and the reaction frame, clamping claws, and sleeve form a stable and rigid frame structure. The force generated by the bolt pushing is directly converted into clamping force on the small furnace cover through this frame, resulting in a rigid structure that is not prone to loosening. In high-temperature operating environments, the device, relying on the self-locking nature of the bolts and the rigid frame structure, can effectively resist loosening that may be caused by thermal stress or vibration, and is less prone to sealing leakage compared to wedge structures. Attached Figure Description
[0014] Figure 1 Schematic diagram of a device for quickly clamping and sealing the furnace lid of a heat-insulating furnace. Figure 1 ;
[0015] Figure 2 Schematic diagram of a device for quickly clamping and sealing the furnace lid of a heat-insulating furnace. Figure 2 ;
[0016] Figure 3 A cross-sectional view of a device for quickly clamping and sealing the furnace lid of a heat-insulating furnace;
[0017] Figure 4 This is a schematic diagram of a small furnace lid;
[0018] Figure 5 This is a schematic diagram of the large furnace lid;
[0019] Figure 6 A schematic diagram of the device for quickly clamping and sealing the furnace lid of a heat preservation furnace.
[0020] In the diagram: 1-Reaction frame; 1.1-Sleeve; 1.2-Top plate; 1.3-Bottom plate; 2-Bolt; 3-Claw; 3.1-Claw hook; 3.2-Top rib; 3.3-Bottom rib; 4-Small furnace cover; 5-Large furnace cover; 6-Pin; 7-Clamping plate; 8-Nut. Detailed Implementation
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] like Figures 1-6 As shown: A device for quickly clamping and sealing the furnace cover of a heat preservation furnace includes a reaction frame 1, a bolt 2, and a claw 3; one end of the claw 3 is fixed to the reaction frame 1, and the other end is provided with a claw hook 3.1; the bolt 2 is screwed into the screw hole on the reaction frame 1, and the bolt 2 is used to push the reaction frame 1 outward with the fulcrum at the top of the small furnace cover 4 as support, and the claw hook 3.1 of the claw 3 is hooked on the protrusion of the large furnace cover 5 to clamp the small furnace cover 4 and the large furnace cover 5.
[0023] The claws 3 are arranged in a ring array around the bolt 2, and there are more than 2 claws 3; they can apply clamping force evenly to the circumference of the furnace cover, ensuring that the sealing mortar is evenly compacted and forming a continuous and effective sealing ring.
[0024] A pin 6 is fixed to the top of the small furnace cover 4. A sleeve 1.1 is provided on the reaction frame 1. The top of the sleeve 1.1 is provided with a threaded hole for connection with the bolt 2, and the bottom of the sleeve 1.1 is used to insert with the pin 6. The pin 6 acts as a fulcrum to support the bolt 2 inside the sleeve 1.1. The pin 6 at the top of the small furnace cover 4 and the bottom of the sleeve 1.1 of the reaction frame are inserted and matched, providing a stable and reliable fulcrum for the pushing of the bolt 2, ensuring that the force transmission path is clear and precise, and preventing the device from deviating or shaking.
[0025] The reaction frame 1 includes a top plate 1.2 and a bottom plate 1.3, which are respectively connected to the top and bottom of the jaw 3. The inner rings of the top plate 1.2 and the bottom plate 1.3 are connected to the sleeve 1.1. The top plate 1.2 and the bottom plate 1.3 have slots that respectively mate with the top rib 3.2 and the bottom rib 3.3 of the jaw 3. The top plate 1.2 and the bottom plate 1.3 are connected to the top rib 3.2 and the bottom rib 3.3 of the jaw 3 through the slots and are connected to the sleeve 1.1, which greatly enhances the rigidity and overall stability of the entire reaction frame structure, enabling it to withstand large clamping forces without deformation.
[0026] The furnace cover 5 is provided with intermittently distributed clamping plates 7, the number and spacing of which correspond to the clamping claws 3; the clamping plates 7 on the furnace cover 5 provide more reliable and durable hook-and-load points.
[0027] A nut 8 is fixed to the top of the sleeve 1.1, and the bolt 2 is screwed into the nut 8.
[0028] The clamping jaws 3 of the quick-clamping and sealing device for the furnace lid are offset from the clamping plate 7 and cover the small furnace lid 4. Then, the device is rotated so that the claw hooks 3.1 of the clamping jaws 3 are positioned below the clamping plate 7, and the locking bolts 2 complete the sealing of the furnace lid. Implementing the quick-clamping and sealing device for the furnace lid provided in this embodiment can achieve a rapid and effective seal for the small furnace lid 4. The clamping time is reduced from the original 30-40 minutes to 10 minutes. No gas leakage occurs during use. The entire process is safe and fast, significantly improving efficiency and reducing the operational risks of high-temperature baking. At the same time, the clamp has a simple structure, is easy to operate, and has good practicality.
[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A device for quickly clamping and sealing the furnace lid of a heat-preserving furnace, characterized in that: It includes a reaction frame (1), a bolt (2) and a claw (3); one end of the claw (3) is fixed on the reaction frame (1) and the other end is provided with a claw hook (3.1); the bolt (2) is screwed into the screw hole on the reaction frame (1), and the bolt (2) is used to push the reaction frame (1) outward with the fulcrum at the top of the small furnace cover (4) as support, and the claw hook (3.1) of the claw (3) is hooked on the protrusion of the large furnace cover (5) to clamp the small furnace cover (4) and the large furnace cover (5).
2. The device for quickly clamping and sealing the furnace lid of a heat-preserving furnace according to claim 1, characterized in that: The claws (3) are arranged in a ring array around the bolt (2), and the number of claws (3) is greater than 2.
3. The device for quickly clamping and sealing the furnace lid of a heat-preserving furnace according to claim 2, characterized in that: The small furnace cover (4) is fixed with a pin (6) at the top. A sleeve (1.1) is provided on the reaction frame (1). The top of the sleeve (1.1) is provided with a threaded hole for connection with the bolt (2). The bottom of the sleeve (1.1) is used to insert with the pin (6). The pin (6) serves as a fulcrum to support the bolt (2) inside the sleeve (1.1).
4. The device for quickly clamping and sealing the furnace lid of a heat-preserving furnace according to claim 3, characterized in that: The reaction frame (1) includes a top plate (1.2) and a bottom plate (1.3). The top plate (1.2) and the bottom plate (1.3) are respectively connected to the top and bottom of the claw (3). The inner rings of the top plate (1.2) and the bottom plate (1.3) are connected to the sleeve (1.1). The top plate (1.2) and the bottom plate (1.3) have slots that respectively fit with the top rib (3.2) and the bottom rib (3.3) of the claw (3).
5. The device for quickly clamping and sealing the furnace lid of a heat-preserving furnace according to claim 2, characterized in that: The large furnace cover (5) is provided with card plates (7) spaced apart, and the number and spacing of the card plates (7) correspond to the card claws (3).
6. The device for quickly clamping and sealing the furnace lid of a heat-preserving furnace according to claim 3, characterized in that: The top of the sleeve (1.1) is fixed with a nut (8), and the bolt (2) is screwed into the nut (8).