Improved calcium carbide furnace cover device

Abstract

The utility model discloses an improved calcium carbide furnace cover device which comprises a central furnace cover, a plurality of splicing furnace covers are arranged outside the central furnace cover, arc-shaped hoops are arranged outside the splicing furnace covers, and the arc-shaped hoops tightly hoop the central furnace cover and the splicing furnace covers to form a furnace cover body. A plurality of electrode holes are formed in the furnace cover body, water-cooled jacket assemblies are installed at the positions of the electrode holes, and a center tensioning device is arranged on the center furnace cover. The utility model has the beneficial effects that the central furnace cover and the splicing furnace cover are fixed in an arc-shaped hoop connecting mode, the connecting bolt is far away from the high-temperature position of the electrode, the connection is firmer and more reliable, meanwhile, the special water-cooled jacket assembly is designed, and a U-shaped cooling pipe is used for replacing a spiral cooling water pipe, so that the structure is simpler, and the cost is lower. And the circulation arrangement of cooling water is more reasonable, local over-high temperature can be effectively reduced, the risk of water leakage of the water-cooled jacket is reduced, and the water-cooled jacket is worthy of wide-range popularization and application.

Description

Technical field:

[0001] The utility model relates to the technical field of calcium carbide furnace equipment, in particular to an improved calcium carbide furnace cover device. Background technology:

[0002] There are three main types of domestic calcium carbide furnaces: open, semi-enclosed and fully enclosed. With the development of the economy and the need for energy conservation and emission reduction, large-scale enclosed calcium carbide furnaces are currently the main environmentally friendly calcium carbide furnaces promoted by the country; the furnace cover is the core equipment of the enclosed calcium carbide furnace. At present, the furnace cover of large-scale domestic enclosed calcium carbide furnaces is mainly composed of edge furnace covers, center furnace covers, electrode sealing guide devices, electrode water cooling jackets, hanging devices, etc. In actual operation, due to the high temperature around the electrodes and arcing of the electrodes during smelting, the equipment around the electrodes is most likely to be damaged, such as water cooling jacket leakage. The general structure of the water cooling jacket includes a cooling cylinder, and a spiral cooling water pipe is arranged on the outer wall of the cooling cylinder. The path of the cooling water pipe is too long, resulting in a large temperature difference between the water inlet section and the water outlet section of the cooling water pipe. The temperature of the water outlet section is too high and it is difficult to play a cooling role, resulting in deformation of the cooling cylinder and leakage; at the same time, the edge furnace cover and the center furnace cover are connected and spliced ​​by bolts, especially the bolts close to the center furnace cover are prone to fall off, posing a safety hazard and affecting the normal production. Utility model content:

[0003] The utility model aims to provide an improved calcium carbide furnace cover device to solve the technical problems in the prior art that the calcium carbide furnace cover water cooling jacket is prone to water leakage and the furnace cover connecting bolts are prone to falling off.

[0004] The content of the utility model: an improved calcium carbide furnace cover device, which includes a central furnace cover, a plurality of spliced ​​furnace covers are arranged outside the central furnace cover, an arc hoop is arranged outside the spliced ​​furnace cover, the arc hoop clamps the central furnace cover and the spliced ​​furnace covers to form a furnace cover body, a plurality of electrode holes are arranged on the furnace cover body, a water cooling sleeve assembly is installed at the position of the electrode holes, a central tensioning device is arranged on the central furnace cover, and the central tensioning device is used to tighten the spliced ​​furnace cover.

[0005] Furthermore, the water cooling jacket assembly includes a vertically arranged base tube, on which a plurality of through holes are evenly distributed in a circumferential direction, and a water cooling pipe is inserted into the through hole. The water cooling pipe is an inverted U-shape, one end of the water cooling pipe is a water inlet end, and the other end of the water cooling pipe is a water outlet end, and a water collecting plate assembly is installed at the bottom end of the water cooling pipe.

[0006] Furthermore, the water collecting plate assembly includes a water collecting circular plate, on which a water inlet ring groove and a water outlet ring groove are concentrically opened, the diameter of the water inlet ring groove is smaller than the diameter of the water outlet ring groove, the water inlet ring groove is connected to one end of the water cooling pipe, and the water outlet ring groove is connected to the other end of the water cooling pipe, and the water inlet ring groove and the water outlet ring groove are respectively connected to the water inlet pipe and the water outlet pipe.

[0007] Furthermore, the center tensioning device includes a vertical plate connected to the center furnace cover, a sliding through hole is opened on the vertical plate, a sliding rod is slidably connected in the sliding through hole, the axis of the sliding rod intersects with the axis of the center furnace cover, a wedge-shaped column is connected to the inner end of the sliding rod, a limiting plate is connected to the outer end of the sliding rod, a locking cap is arranged above the wedge-shaped column, a screw is connected to the bottom end of the locking cap, a threaded hole is opened in the center of the center furnace cover, and the screw is screwed into the threaded hole.

[0008] Furthermore, a compression spring is mounted on the screw rod, and two ends of the compression spring are in contact with the limiting plate and the vertical plate respectively.

[0009] Furthermore, a locking groove is provided in the locking cap, and guide angles are provided at the locking groove and at the top end of the wedge-shaped column.

[0010] The beneficial effects of the utility model: the utility model fixes the central furnace cover and the spliced ​​furnace cover by connecting in an arc hoop manner, and the connecting bolts are away from the high-temperature position of the electrode, so the connection is more firm and reliable. At the same time, a special water-cooling jacket assembly is designed, and a U-shaped cooling pipe is used instead of a spiral cooling water pipe, so the structure is simpler, so that the water inlet section of the U-shaped cooling pipe is close to the electrode, and the water outlet section of the U-shaped cooling pipe is away from the electrode, and the cooling water circulation arrangement is more reasonable, which can effectively reduce the local excessive temperature, thereby reducing the risk of water leakage in the water-cooling jacket, and is worthy of large-scale promotion and use. Description of the drawings:

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is a top view of the utility model;

[0013] Figure 3 for Figure 2 Section view along BB;

[0014] Figure 4 for Figure 2 Section view along AA;

[0015] In the figure, a central furnace cover 1, a spliced ​​furnace cover 2, a water cooling jacket assembly 3, an arc hoop 4, a base tube 5, a water cooling pipe 6, a water inlet ring groove 7, a water outlet ring groove 8, a water collecting circular plate 9, a vertical plate 10, a sliding rod 11, a limit plate 12, a compression spring 13, a wedge column 14, a screw 15, and a locking cap 16. Specific implementation method:

[0016] like Figure 1 As shown, an improved calcium carbide furnace cover device includes a central furnace cover 1, a plurality of spliced ​​furnace covers 2 are arranged outside the central furnace cover 1, an arc hoop 4 is arranged outside the spliced ​​furnace cover 2, the arc hoop 4 clamps the central furnace cover 1 and the spliced ​​furnace covers 2 to form a furnace cover body, a plurality of electrode holes are arranged on the furnace cover body, a water cooling sleeve assembly 3 is installed at the position of the electrode holes, and a central tensioning device is arranged on the central furnace cover 1, and the central tensioning device is used to tighten the spliced ​​furnace cover 2.

[0017] like Figure 2 and Figure 3 As shown, the water-cooling jacket assembly 3 includes a vertically arranged base tube 5, on which a plurality of through holes are evenly distributed in the circumferential direction, a water-cooling tube 6 is inserted in the through hole, and the water-cooling tube 6 is an inverted U-shape, one end of the water-cooling tube 6 is a water inlet end, and the other end of the water-cooling tube 6 is a water outlet end, and a water collecting plate assembly is installed at the bottom end of the water-cooling tube 6; the water collecting plate assembly includes a water collecting circular plate 9, on which a water inlet annular groove 7 and a water outlet annular groove 8 are concentrically opened, the diameter of the water inlet annular groove 7 is smaller than the diameter of the water outlet annular groove 8, the water inlet annular groove 7 is connected with one end of the water-cooling tube 6, and the water outlet annular groove 8 is connected with the other end of the water-cooling tube 6, and the water inlet annular groove 7 and the water outlet annular groove 8 are respectively connected with the water inlet pipe and the water outlet pipe.

[0018] In order to further tighten the furnace cover, Figure 4 As shown, the center tensioning device includes a vertical plate 10 connected to the center furnace cover 1, a sliding through hole is opened on the vertical plate 10, a sliding rod 11 is slidably connected in the sliding through hole, the axis of the sliding rod 11 intersects with the axis of the center furnace cover 1, a wedge-shaped column 14 is connected to the inner end of the sliding rod 11, a limiting plate 12 is connected to the outer end of the sliding rod 11, a locking cap 16 is arranged above the wedge-shaped column 14, a screw 15 is connected to the bottom end of the locking cap 16, a threaded hole is opened in the center of the center furnace cover 1, and the screw 15 is screwed into the threaded hole; a compression spring 13 is mounted on the screw 15, and the two ends of the compression spring 13 are in contact with the limiting plate 12 and the vertical plate 10 respectively; a locking groove is arranged in the locking cap 16, and guide angles are opened in the locking groove and the top of the wedge-shaped column 14.

[0019] During specific operation, cooling water passes through the water inlet pipe, the water inlet ring groove 7, the water outlet ring groove 8 of the water-cooling pipe 6 and the water outlet pipe in sequence, so that the cooling water first cools the electrode column with a higher temperature, improves the cooling effect, and reduces the probability of water leakage in the water-cooling pipe 6; when assembling the furnace cover, the sliding rod 11 can be tightened by tightening the locking cap 16, thereby further tightening the central furnace cover 1 and the spliced ​​furnace cover 2; the connecting bolts of the arc hoop 4 are located on the outside of the furnace cover body, with low temperature and high connection strength.

[0020] The above are only preferred examples of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved calcium carbide furnace cover device, characterized in that: It comprises a central furnace cover (1), a plurality of spliced ​​furnace covers (2) are arranged outside the central furnace cover (1), an arc hoop (4) is arranged outside the spliced ​​furnace cover (2), the arc hoop (4) clamps the central furnace cover (1) and the spliced ​​furnace covers (2) to form a furnace cover body, a plurality of electrode holes are arranged on the furnace cover body, a water cooling sleeve assembly (3) is installed at the position of the electrode holes, and a central tensioning device is arranged on the central furnace cover (1), and the central tensioning device is used to tighten the spliced ​​furnace cover (2).

2. The improved calcium carbide furnace cover device according to claim 1 is characterized in that: The water cooling jacket assembly (3) comprises a vertically arranged base tube (5), a plurality of through holes are evenly distributed in the circumferential direction on the base tube (5), a water cooling pipe (6) is inserted into the through hole, the water cooling pipe (6) is an inverted U-shape, one end of the water cooling pipe (6) is a water inlet end, the other end of the water cooling pipe (6) is a water outlet end, and a water collecting plate assembly is installed at the bottom end of the water cooling pipe (6).

3. The improved calcium carbide furnace cover device according to claim 2 is characterized in that: The water collecting plate assembly comprises a water collecting circular plate (9), on which a water inlet annular groove (7) and a water outlet annular groove (8) are concentrically provided, the diameter of the water inlet annular groove (7) being smaller than the diameter of the water outlet annular groove (8), the water inlet annular groove (7) being connected to one end of the water cooling pipe (6), the water outlet annular groove (8) being connected to the other end of the water cooling pipe (6), and the water inlet annular groove (7) and the water outlet annular groove (8) being connected to the water inlet pipe and the water outlet pipe, respectively.

4. The improved calcium carbide furnace cover device according to claim 1 is characterized in that: The central tensioning device comprises a vertical plate (10) connected to the central furnace cover (1), a sliding through hole is provided on the vertical plate (10), a sliding rod (11) is slidably connected in the sliding through hole, the axis of the sliding rod (11) intersects with the axis of the central furnace cover (1), a wedge-shaped column (14) is connected to the inner end of the sliding rod (11), a limiting plate (12) is connected to the outer end of the sliding rod (11), a locking cap (16) is arranged above the wedge-shaped column (14), a screw rod (15) is connected to the bottom end of the locking cap (16), a threaded hole is provided at the center of the central furnace cover (1), and the screw rod (15) is screwed into the threaded hole.

5. An improved calcium carbide furnace cover device according to claim 4, characterized in that: A compression spring (13) is mounted on the screw rod (15), and two ends of the compression spring (13) are in contact with the limiting plate (12) and the vertical plate (10) respectively.

6. The improved calcium carbide furnace cover device according to claim 4 is characterized in that: A locking groove is arranged in the locking cap (16), and guide angles are provided at the top ends of the locking groove and the wedge-shaped column (14).

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