Calcium carbide furnace thermal insulation material fixing device

Abstract

The utility model discloses a calcium carbide furnace thermal insulation material fixing device which comprises an upper supporting frame and a rectangular supporting arm integrally formed at the top end of the upper supporting frame, a tray is fixed at the bottom end of the upper supporting frame, and a plurality of screw rod diameter adjusting structures are arranged at the edge position of the bottom end of the tray at equal intervals. A lead screw bidirectional clamping structure used for clamping heat preservation materials is installed at the movable end of each lead screw diameter adjusting structure, and a bevel gear transmission structure used for driving the multiple lead screw diameter adjusting structures to work synchronously is installed at the center position of the bottom end of the tray. According to the utility model, the laying and fixing process of the ceramic fiber felt is more efficient and can be completed in a shorter time, the uniform covering and good fitting of the thermal insulation material on the outer wall of the furnace body are ensured, and the problem of non-uniformity or dislocation possibly caused by manual operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium carbide furnaces, in particular to a device for fixing heat-insulating materials for calcium carbide furnaces. Background Art

[0002] The calcium carbide furnace is a key piece of chemical equipment, primarily used for the electrolytic production of acetylene gas, an essential raw material in chemical production. Its complex structure includes a furnace body made of high-temperature resistant materials, an electrolytic cell containing an electrolyte solution, and electrodes made of iron or steel. The calcium carbide furnace uses an electric current through the electrolyte solution to reduce acetylene gas from carbonate ions. This electrolysis process not only produces acetylene, but also hydrogen and chlorine, gases that have various uses in the chemical industry. Acetylene gas is ultimately transported via pipelines to downstream process units for the production of important chemicals such as ethylene, ethanol, and synthetic rubber. During operation, the calcium carbide furnace often requires insulation on the outer wall of the furnace to ensure stable operation and safety in high-temperature environments. This insulation operation can not only effectively reduce the heat loss on the surface of the furnace body, but also improve the overall energy efficiency and stability of the operating environment. At this time, the prefabricated ceramic fiber felt or board is covered on the outer wall of the furnace body and fixed with metal clips or special fixing fixtures or adhesives. At the same time, attention should be paid to the overlap and sealing between the felts to prevent heat leakage, or high-temperature resistant coatings should be selected to form a protective coating on the surface of the furnace body. Common coatings include high-temperature resistant silicone rubber coatings or special ceramic coatings. Attention should be paid to the thickness and uniformity of the coating during construction. However, in the process of laying ceramic fiber felt, the ceramic fiber felt is required to be cut and customized according to the specific furnace structure during installation, which makes the ceramic fiber felt larger in size and overall length. It is relatively troublesome for the staff to operate it, and it is difficult to ensure that the entire piece of ceramic fiber felt is placed correctly. Summary of the Invention

[0003] The purpose of the utility model is to provide a device for fixing thermal insulation materials for a calcium carbide furnace, wherein a tray larger than the outer diameter of the calcium carbide furnace is set, the tray is lifted by a suspension device, and then the ceramic fiber felts are clamped one by one by multiple screw bidirectional clamping structures until the ceramic fiber felts form a reel structure slightly larger than the outer diameter of the calcium carbide furnace, and the ceramic fiber felts are brought into contact with the outer wall of the calcium carbide furnace through the screw diameter adjustment structure, so as to facilitate the staff to carry out reinforcement operations on the calcium carbide furnace and the ceramic fiber felt, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for fixing thermal insulation materials for a calcium carbide furnace, comprising an upper support frame and a rectangular support arm integrally formed at the top of the upper support frame, a tray being fixed to the bottom end of the upper support frame, and a plurality of equally spaced screw diameter adjustment structures being provided at the edge position of the bottom end of the tray, a two-way screw clamping structure for clamping thermal insulation materials being installed at the movable end of the screw diameter adjustment structure, a bevel gear transmission structure for driving multiple screw diameter adjustment structures to work synchronously being installed at the center position of the bottom end of the tray, and a stepper motor for driving the bevel gear transmission structure to work being installed inside the upper support frame.

[0005] Preferably, an annular lip is fixed at the edge of the bottom end of the tray, and an upper groove extending upward is provided at the top end of the annular lip.

[0006] Preferably, the tray and the annular lip are both made of alloy steel.

[0007] Preferably, the screw diameter adjustment structure includes a U-shaped shaft frame fixed to the bottom end of the tray, a one-way threaded shaft rotatably installed inside the U-shaped shaft frame, and a nut pair installed at the threaded end of the one-way threaded shaft surface, and a connecting plate is fixed to the bottom end of the nut pair.

[0008] Preferably, the bevel gear transmission structure includes a bevel gear plate mounted on the output end of the stepper motor and a driven bevel gear fixed to one end of the one-way threaded shaft, and the bevel gear plate and the plurality of driven bevel gears are meshed with each other.

[0009] Preferably, the bidirectional clamping structure of the screw rod includes a hollow shaft frame fixed to the bottom end of the connecting plate, a bidirectional threaded shaft rotatably installed inside the hollow shaft frame, and a nut sleeve installed at the threads at both ends of the surface of the bidirectional threaded shaft. A lower protruding arm is fixed to the bottom end of the nut sleeve, and rubber columns are installed on the outer walls of the two opposite sides of the lower protruding arms.

[0010] Compared with the prior art, the beneficial effect of the utility model is that the calcium carbide furnace insulation material fixing device pre-clamps the edges of the ceramic fiber felt one by one through multiple screw bidirectional clamping structures until the ceramic fiber felt forms a cylindrical structure with the multiple screw bidirectional clamping structures as the trajectory line, and the screw diameter adjustment structure pulls the screw bidirectional clamping structure away from or close to the center point of the tray, thereby adjusting the inner diameter of the cylindrical structure, which makes the laying and fixing process of the ceramic fiber felt more efficient and can be completed in a shorter time, and ensures the uniform coverage and good fit of the insulation material on the outer wall of the furnace body, avoiding the unevenness or misalignment problems that may be caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a side structural diagram of the present utility model;

[0013] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0014] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0015] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0016] In the figure: 1. Upper support frame; 2. Rectangular support arm; 3. Stepper motor; 4. Pallet; 5. Screw diameter adjustment structure; 501. U-shaped shaft frame; 502. One-way threaded shaft; 503. Nut pair; 504. Connecting plate; 6. Bevel gear transmission structure; 7. Screw bidirectional clamping structure; 701. Hollow shaft frame; 702. Bidirectional threaded shaft; 703. Nut sleeve; 704. Lower protruding arm; 705. Rubber column; 8. Annular lip; 801. Upper groove. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-5 The utility model provides an embodiment: a device for fixing thermal insulation materials for a calcium carbide furnace, comprising an upper support frame 1 and a rectangular support arm 2 integrally formed at the top of the upper support frame 1, a tray 4 being fixed to the bottom end of the upper support frame 1, and a plurality of equally spaced screw diameter adjustment structures 5 being provided at the edge of the bottom end of the tray 4, a screw bidirectional clamping structure 7 for clamping thermal insulation materials being installed at the movable end of the screw diameter adjustment structure 5, a bevel gear transmission structure 6 for driving the plurality of screw diameter adjustment structures 5 to work synchronously being installed at the center position of the bottom end of the tray 4, and a stepping motor 3 for driving the bevel gear transmission structure 6 to work being installed inside the upper support frame 1;

[0019] An annular lip 8 is fixed at the edge of the bottom end of the tray 4, and an upper groove 801 extending upward is provided at the top of the annular lip 8. The tray 4 and the annular lip 8 are both made of alloy steel. The tray 4 and the annular lip 8 made of alloy steel can maintain stable physical and chemical properties and are not easily deformed or damaged, ensuring long-term reliable operation of the device in a high-temperature environment.

[0020] The screw diameter adjustment structure 5 includes a U-shaped shaft frame 501 fixed to the bottom end of the tray 4, a one-way threaded shaft 502 rotatably installed inside the U-shaped shaft frame 501, and a nut pair 503 installed at the threaded part of one end of the surface of the one-way threaded shaft 502. The bottom end of the nut pair 503 is fixed with a connecting plate 504. The bevel gear transmission structure 6 includes a bevel gear disk installed on the output end of the stepper motor 3, and a driven bevel gear fixed at one end of the one-way threaded shaft 502. The bevel gear disk and the multiple driven bevel gears are meshed with each other. The rotational power of the stepper motor 3 is transmitted to each screw diameter adjustment structure 5 through the bevel gear transmission structure 6. At this time, the multiple screw diameter adjustment structures 5 act synchronously, thereby adjusting the diameter of the cylindrical structure surrounded by the ceramic fiber felt by moving the screw bidirectional clamping structure 7. The adjustment is fast and accurate to ensure complete coverage and close contact of the felt.

[0021] The rotary power of the bevel gear transmission structure 6 is transmitted to the one-way threaded shaft 502, which drives the nut pair 503, the connecting plate 504 and the screw rod bidirectional clamping structure 7 to slide, thereby making the screw rod bidirectional clamping structure 7 move closer to or away from the center point of the tray 4. It can more quickly and accurately wrap the felt around the outer wall of the furnace body, ensuring complete coverage and close contact of the felt;

[0022] The screw rod bidirectional clamping structure 7 includes a hollow shaft frame 701 fixed to the bottom end of the connecting plate 504, a bidirectional threaded shaft 702 rotatably installed inside the hollow shaft frame 701, and a nut sleeve 703 installed at the threads at both ends of the surface of the bidirectional threaded shaft 702. The bottom end of the nut sleeve 703 is fixed with a lower protruding arm 704, and rubber columns 705 are installed on the outer walls on the opposite sides of the two lower protruding arms 704. When fixing the ceramic fiber felt, the staff manually rotates the bidirectional threaded shaft 702, and the bidirectional threaded shaft 702 drives the two nut sleeves 703 to approach each other, and then the nut sleeve 703 drives the lower protruding arm 704 and the rubber column 705 to slide until the two rubber columns 705 stably clamp the edge of the ceramic fiber felt to ensure the stability of the ceramic fiber felt during suspension. At the same time, the screw rod bidirectional clamping structure 7 can also flexibly adjust the shape and thickness of the felt to meet different outer wall structure requirements.

[0023] When the embodiment of the present application is in use, the staff first fixes the upper support frame 1 and the rectangular support arm 2 to the hanging end of the suspension device, and the suspension device lifts the upper support frame 1, the rectangular support arm 2 and the device until they are lifted to the height of the top of the calcium carbide furnace. Before that, the staff can pre-clamp the edges of the ceramic fiber felt one by one through multiple screw bidirectional clamping structures 7 until the ceramic fiber felt forms a cylindrical structure with multiple screw bidirectional clamping structures 7 as trajectory lines, thereby using the cylindrical structure to preliminarily cover the calcium carbide furnace, and then the staff turns on the stepper motor 3 to work, so that the rotational power of the stepper motor 3 is transmitted to the screw diameter adjustment structure 5 through the bevel gear transmission structure 6. At this time, each screw diameter adjustment structure 5 is in action, and the screw rod diameter adjustment structure 5 is driven by the screw rod. The rod diameter adjustment structure 5 pulls the screw bidirectional clamping structure 7 away from or closer to the center point of the tray 4, thereby adjusting the inner diameter of the cylindrical structure until the cylindrical structure surrounded by the ceramic fiber felt contacts the outer wall of the calcium carbide furnace. At this time, the staff can use metal clips, special fixing fixtures or adhesives to fix the ceramic fiber felt so that the ceramic fiber felt is stably connected to the calcium carbide furnace. The staff then contacts the device to reinforce the ceramic fiber felt and remove the device. This device makes the laying and fixing process of the ceramic fiber felt more efficient and can be completed in a shorter time, and ensures the uniform coverage and good fit of the thermal insulation material on the outer wall of the furnace body, avoiding unevenness or misalignment problems that may be caused by manual operation.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A device for fixing thermal insulation materials for a calcium carbide furnace, characterized in that: The invention comprises an upper support frame (1) and a rectangular support arm (2) integrally formed at the top of the upper support frame (1); a tray (4) is fixed to the bottom end of the upper support frame (1); and a plurality of equally spaced screw diameter adjustment structures (5) are provided at the edge of the bottom end of the tray (4); a screw bidirectional clamping structure (7) for clamping a heat-insulating material is installed at the movable end of the screw diameter adjustment structure (5); a bevel gear transmission structure (6) for driving the plurality of screw diameter adjustment structures (5) to work synchronously is installed at the center of the bottom end of the tray (4); and a stepping motor (3) for driving the bevel gear transmission structure (6) to work is installed inside the upper support frame (1).

2. The device for fixing heat-insulating materials for calcium carbide furnaces according to claim 1, characterized in that: An annular lip (8) is fixed at the edge of the bottom end of the tray (4), and an upper groove (801) extending upward is provided at the top end of the annular lip (8).

3. The device for fixing heat-insulating materials for calcium carbide furnaces according to claim 2, characterized in that: The tray (4) and the annular lip (8) are both made of alloy steel.

4. The device for fixing heat-insulating materials for calcium carbide furnaces according to claim 1, characterized in that: The screw rod diameter adjustment structure (5) comprises a U-shaped shaft frame (501) fixed to the bottom end of the tray (4), a one-way threaded shaft (502) rotatably mounted inside the U-shaped shaft frame (501), and a nut pair (503) mounted at a threaded portion on one end of the surface of the one-way threaded shaft (502), wherein a connecting plate (504) is fixed to the bottom end of the nut pair (503).

5. The device for fixing heat-insulating materials for calcium carbide furnaces according to claim 4, characterized in that: The bevel gear transmission structure (6) comprises a bevel gear disc mounted on the output end of the stepping motor (3), and a driven bevel gear fixed to one end of a one-way threaded shaft (502), wherein the bevel gear disc and the plurality of driven bevel gears are meshed with each other.

6. The device for fixing heat-insulating materials for calcium carbide furnaces according to claim 4, characterized in that: The screw rod bidirectional clamping structure (7) comprises a hollow shaft frame (701) fixed to the bottom end of the connecting plate (504), a bidirectional threaded shaft (702) rotatably mounted inside the hollow shaft frame (701), and nut sleeves (703) mounted at the threads at both ends of the surface of the bidirectional threaded shaft (702), a lower convex arm (704) being fixed to the bottom end of the nut sleeve (703), and rubber columns (705) being mounted on the outer walls of the two opposite sides of the lower convex arms (704).

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