Furnace cover structure of movable steelmaking furnace

Abstract

The utility model discloses a movable steelmaking furnace cover structure, which relates to the technical field of steelmaking furnace covers and comprises a lifting component and a furnace cover body, the furnace cover body comprises an upper cover body and a lower cover body, a cooling cavity is arranged at the top of the lower cover body, the upper cover body is matched with the cooling cavity, and a water inlet pipe and a water outlet pipe are arranged at the top of the upper cover body. The water inlet pipe and the water outlet pipe penetrate through the upper cover and communicate with the cooling cavity; a boss is arranged in the cooling cavity, a flue gas flow channel pipe is arranged in the middle of the boss, one end of the flue gas flow channel pipe penetrates through the boss and the lower cover body, a first connecting opening matched with the flue gas flow channel pipe is formed in the upper cover body, the other end of the flue gas flow channel pipe penetrates through the first connecting opening, and the upper cover body and the lower cover body are detachably connected through a connecting piece. The steel furnace cover solves the problems that when an existing steel furnace cover is manufactured, the overall welding workload is large, and when the steel furnace cover is used, an inner cavity is not easy to clean, scaling is prone to occurring after long-time use, and the cooling effect is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking furnace covers, in particular to a movable steelmaking furnace cover structure. Background Art

[0002] A mobile steelmaking furnace is a mobile steelmaking equipment, usually used in small steel manufacturers or on-site construction projects. This type of steelmaking furnace is usually small in size and low in production capacity, but it is flexible and convenient, and can be moved to different locations for use at any time as needed. Mobile steelmaking furnaces usually use arc melting technology to heat and melt raw materials such as scrap steel or pig iron through high-temperature arcs, and then add appropriate alloy elements for blending, and finally obtain steel products that meet the requirements. This type of steelmaking equipment is simple to operate and easy to maintain, and is suitable for some temporary or small-scale steel production scenarios.

[0003] The furnace cover is an important part of the steelmaking furnace. It is used to cover the furnace body and protect the molten pool in the furnace from the influence of the external environment. It can also control the temperature and atmosphere in the furnace. In the prior art, the furnace cover is generally a water-cooled furnace cover. In the prior art, the water-cooled furnace cover generally includes an upper plate and a lower plate, and the upper plate and the lower plate are welded to form a whole with a cavity. This type of furnace cover has the problems of large workload during the overall welding and manufacturing, the internal cavity is not easy to clean, and the internal cavity is prone to scaling after long-term use, which affects the cooling effect.

[0004] In the utility model with application number: CN202122733455.2 and publication number: CN216245569U, a large electric furnace cover with a water-cooling structure is disclosed, including a furnace body, a furnace cover body and a water-cooling mechanism. The furnace cover body is arranged above the furnace body, and an installation groove is arranged on the inner wall at the bottom of the furnace cover body. The water-cooling mechanism is arranged inside the furnace cover body. It still has the problem of large overall welding workload during manufacturing, and the internal cavity is not easy to clean during use, and scaling is easy to occur after long-term use, which affects the cooling effect. Utility Model Content

[0005] Based on this, in order to solve the above problems, the utility model proposes a mobile steelmaking furnace cover structure, which solves the problem of large overall welding workload during the manufacturing of the current steelmaking furnace cover, and the problem that the internal cavity is difficult to clean during use, and scaling is easy to occur after long-term use, affecting the cooling effect.

[0006] The technical solution of the utility model is:

[0007] A mobile steelmaking furnace cover structure comprises a lifting assembly and a furnace cover body, wherein the furnace cover body is arranged on the lifting assembly, and the lifting assembly is used to drive the furnace cover body, and the furnace cover body comprises an upper cover body and a lower cover body, and a cooling cavity is arranged on the top of the lower cover body, and the upper cover body cooperates with the cooling cavity to close the cooling cavity, and a water inlet pipe and a water outlet pipe are arranged on the top of the upper cover body, and the water inlet pipe and the water outlet pipe penetrate the upper cover body and communicate with the cooling cavity;

[0008] A boss is provided in the cooling cavity, a flue gas flow duct is provided in the middle of the boss, one end of the flue gas flow duct passes through the boss and the lower cover body, and is fixedly connected to the boss and the lower cover body, a first connecting port which is matched with the flue gas flow duct is provided on the upper cover body, a first sealing ring is provided in the first connecting port, and the other end of the flue gas flow duct passes through the first connecting port, and is slidably connected to the upper cover body;

[0009] The upper cover body and the lower cover body are detachably connected by a connecting piece, and the connecting piece includes three connecting rods and three connecting rotary sleeves. One end of the three connecting rods is arranged on the boss and fixedly connected to the boss. The upper cover body is provided with three second connecting ports for the three connecting rods to pass through. Second sealing rings are arranged in the second connecting ports. The other ends of the connecting rods pass through the second connecting ports respectively and are slidably connected to the upper cover body. The connecting rotary sleeve is arranged at one end of the connecting rod passing through the connecting port and is threadedly connected to the connecting rod.

[0010] Preferably, a sealing gasket is provided between the connecting rotary sleeve and the upper cover body, and the sealing gasket is sleeved on one end of the connecting rod passing through the connecting port.

[0011] Preferably, a convex ring is provided at the bottom of the upper cover body, and a groove cooperating with the convex ring is provided on the side wall of the cooling cavity, and the convex ring can be inserted into the groove and plugged into the groove.

[0012] Preferably, a first sealing ring is provided in the groove and is matched with the groove.

[0013] Preferably, a first blocking ring, a second blocking ring and a third blocking ring are provided at the bottom of the lower cover body, an installation groove is provided between the first blocking ring and the second blocking ring, and a second sealing ring is provided in the installation groove.

[0014] Preferably, the lifting assembly includes a mounting bracket, a pair of mounting blocks and a pair of hydraulic cylinders, the furnace cover body is slidably connected to the mounting bracket through a pair of mounting blocks, a pair of hydraulic cylinders are arranged on the top of the mounting bracket, and the output ends of the pair of hydraulic cylinders are respectively fixedly connected to the mounting blocks.

[0015] Preferably, the mounting bracket includes a pair of support arms and a mounting beam, the mounting beam is arranged on the top of the pair of support arms and fixedly connected to the support arms, the furnace cover body is arranged between the pair of support arms and is slidably connected to the support arms through a pair of mounting blocks, a pair of hydraulic cylinders are arranged on the mounting beam, and the output ends of the pair of hydraulic cylinders are respectively fixedly connected to the mounting blocks.

[0016] Preferably, a pair of mounting blocks are both L-shaped mounting blocks, a sliding connection block is provided at one end of the mounting block, the support arm is provided with a sliding connection groove cooperated with the sliding connection block, the sliding connection block is arranged in the sliding connection groove and is slidably connected to the support arm, and the other end of the mounting block is fixedly connected to the top of the lower cover body.

[0017] Preferably, each of the pair of support arms is provided with an arc-shaped fixing piece, and the two arc-shaped fixing pieces are fixed by a fixing member.

[0018] Preferably, connecting plates are provided at both ends of the arc-shaped fixing plate, and the fixing member includes a connecting screw and a matching nut, and one end of the connecting screw passes through the connecting plates on the same side of the two arc-shaped fixing plates and is threadedly connected to the matching nut.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model uses a connecting piece to set the upper cover body and the lower cover body to be detachably connected, so as to facilitate the cleaning of the structure in the cooling cavity. When in use, three connecting rods pass through the three second connecting ports respectively and are connected to the connecting rotary sleeve, so that the upper cover body and the lower cover body are fixedly connected, and the cooling cavity is closed by the upper cover body, so as to achieve the closure of the cooling cavity. After long-term use, the upper cover body and the lower cover body can be disassembled by removing the connecting rotary sleeve from the connecting rod, so that the inside of the cooling cavity can be cleaned. The problem of the large overall welding workload during the manufacture of the current steelmaking furnace cover is solved, and the problem that the internal cavity is not easy to clean during use, and scaling is easy to occur after long-term use, which affects the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a mobile steelmaking furnace cover structure described in an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the furnace cover body described in the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the furnace cover body described in the embodiment of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of the furnace cover body described in the embodiment of the utility model. Figure 2 ;

[0025] Figure 5 It is a structural schematic diagram of the lifting assembly described in the embodiment of the utility model;

[0026] Description of reference numerals:

[0027] 10-lifting assembly, 100-mounting bracket, 101-mounting block, 102-hydraulic cylinder, 103-support arm, 104-mounting beam, 105-sliding connection block, 106-sliding connection groove, 107-arc fixing plate, 108-connecting plate, 109-connecting screw, 110-matching nut, 20-furnace cover body, 200-upper cover body, 201-lower cover body, 202-cooling cavity, 203-water inlet pipe, 204-water outlet pipe, 205-boss, 206-smoke flow duct pipe, 207-first connecting port, 208-first sealing ring, 209-connecting rod, 210-connecting rotary sleeve, 211-second connecting port, 212-second sealing ring, 213-sealing gasket, 214-convex ring, 215-groove, 216-first sealing ring, 217-first shielding ring, 218-second shielding ring, 219-third shielding ring, 220-installing groove, 221-second sealing ring. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] Example:

[0030] like Figures 1 to 3 As shown, in order to solve the above problems, the present embodiment discloses a mobile steelmaking furnace cover structure, including a lifting assembly 10 and a furnace cover body 20, the furnace cover body 20 is arranged on the lifting assembly 10, the lifting assembly 10 is used to drive the furnace cover body 20, the furnace cover body 20 includes an upper cover body 200 and a lower cover body 201, a cooling cavity 202 is arranged on the top of the lower cover body 201, the upper cover body 200 is matched with the cooling cavity 202 to close the cooling cavity 202, and a water inlet pipe 203 and a water outlet pipe 204 are arranged on the top of the upper cover body 200, and the water inlet pipe 203 and the water outlet pipe 204 pass through the upper cover body 200 and communicate with the cooling cavity 202;

[0031] A boss 205 is provided in the cooling cavity 202, a flue gas flow duct 206 is provided in the middle of the boss 205, one end of the flue gas flow duct 206 passes through the boss 205 and the lower cover 201, and is fixedly connected to the boss 205 and the lower cover 201, a first connecting port 207 is provided on the upper cover 200 to cooperate with the flue gas flow duct 206, a first sealing ring 208 is provided in the first connecting port 207, and the other end of the flue gas flow duct 206 passes through the first connecting port 207 and is slidably connected to the upper cover 200;

[0032] The upper cover body 200 and the lower cover body 201 are detachably connected via a connecting piece, and the connecting piece includes three connecting rods 209 and three connecting rotary sleeves 210. One end of the three connecting rods 209 is arranged on the boss 205 and fixedly connected to the boss 205. The upper cover body 200 is provided with three second connecting ports 211 for the three connecting rods 209 to pass through. A second sealing ring 212 is provided in the second connecting port 211. The other ends of the connecting rods 209 pass through the second connecting ports 211 respectively and are slidably connected to the upper cover body 200. The connecting rotary sleeve 210 is arranged at one end of the connecting rod 209 passing through the connecting port and is threadedly connected to the connecting rod 209.

[0033] The utility model sets the upper cover 200 and the lower cover 201 to be detachably connected by using a connecting piece, so as to facilitate cleaning of the structure in the cooling cavity 202. When in use, three connecting rods 209 pass through the three second connecting ports 211 respectively and are connected to the connecting rotary sleeve 210, so that the upper cover 200 and the lower cover 201 are fixedly connected, and the cooling cavity 202 is closed by the upper cover 200, so as to achieve the closedness of the cooling cavity 202. After long-term use, the upper cover 200 and the lower cover 201 can be disassembled by removing the connecting rotary sleeve 210 from the connecting rod 209, so that the inside of the cooling cavity 202 can be cleaned. The problem of large overall welding workload in the current steelmaking furnace cover during manufacturing and the problem that the internal cavity is not easy to clean during use and scaling is easy to occur after long-term use, which affects the cooling effect, is solved.

[0034] The first sealing ring 208 and the second sealing ring 212 can improve the sealing performance of the cooling cavity 202. The first sealing ring 208 and the second sealing ring 212 are made of high temperature resistant materials in the prior art, such as flexible graphite sealing rings or metal sealing rings.

[0035] Preferably, the water inlet pipe 203 and the water outlet pipe 204 can be connected to the cooling circulating liquid pipeline. By connecting the water inlet pipe 203 and the water outlet pipe 204 to the cooling circulating liquid pipeline, the liquid in the cooling cavity 202 can be replaced, thereby realizing water cooling of the furnace cover.

[0036] Preferably, the flue gas flow duct pipe 206 can be externally connected to an exhaust pipe. By externally connecting the flue gas flow duct pipe 206 to an exhaust pipe, the exhaust of the gas in the steelmaking furnace can be completed.

[0037] In order to make the connection between the connecting rotary sleeve 210 and the upper cover body 200 more stable, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a sealing gasket 213 is provided between the connecting rotary sleeve 210 and the upper cover body 200, and the sealing gasket 213 is sleeved on one end of the connecting rod 209 passing through the connecting port.

[0038] When in use, the provision of the sealing gasket 213 can fully press the sealing gasket 213 against the upper cover 200 after the connecting rotary sleeve 210 is tightened, thereby increasing the connection stability between the connecting rotary sleeve 210 and the upper cover 200 .

[0039] The sealing gasket 213 is made of a high temperature resistant material in the prior art, such as a flexible graphite sealing ring or a metal sealing ring.

[0040] In order to increase the sealing between the upper cover body 200 and the cooling cavity 202, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a convex ring 214 is provided at the bottom of the upper cover body 200, and a groove 215 cooperating with the convex ring 214 is provided on the side wall of the cooling cavity 202. The convex ring 214 can be inserted into the groove 215 and plugged into the groove 215.

[0041] Preferably, a first sealing ring 216 is disposed in the groove 215 and is matched with the groove 215 .

[0042] The arrangement of the convex ring 214 and the groove 215 can ensure better sealing between the upper cover 200 and the side wall of the cooling cavity 202 . The first sealing ring 216 is arranged in the groove 215 to further improve the sealing between the upper cover 200 and the side wall of the cooling cavity 202 .

[0043] like Figure 4 As shown, in order to increase the sealing of the connection between the furnace cover body 20 and the steelmaking furnace, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a first shielding ring 217, a second shielding ring 218 and a third shielding ring 219 are provided at the bottom of the lower cover body 201, and an installation groove 220 is provided between the first shielding ring 217 and the second shielding ring 218, and a second sealing ring 221 is provided in the installation groove 220.

[0044] When in use, a groove body that cooperates with the first shielding ring 217, the second shielding ring 218 and the third shielding ring 219 is arranged on the top of the steelmaking furnace, and the groove wall between the groove bodies that cooperate with the first shielding ring 217 and the second shielding ring 218 can be inserted into the installation groove 220, so that the sealing of the connection between the furnace cover body 20 and the steelmaking furnace can be achieved. The second sealing ring 221 plays a role in further increasing the sealing.

[0045] The first sealing ring 216 and the second sealing ring 221 are made of high temperature resistant materials in the prior art, such as flexible graphite sealing rings or metal sealing rings.

[0046] like Figure 5As shown, in order to facilitate the rise and fall of the furnace cover main body 20, thereby facilitating the addition of raw materials into the steelmaking furnace main body, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the lifting assembly 10 includes a mounting bracket 100, a pair of mounting blocks 101 and a pair of hydraulic cylinders 102. The furnace cover main body 20 is slidably connected to the mounting bracket 100 through a pair of mounting blocks 101, a pair of hydraulic cylinders 102 are arranged on the top of the mounting bracket 100, and the output ends of the pair of hydraulic cylinders 102 are fixedly connected to the mounting blocks 101 respectively.

[0047] Preferably, the mounting bracket 100 includes a pair of support arms 103 and a mounting beam 104, the mounting beam 104 is arranged on the top of the pair of support arms 103 and is fixedly connected to the support arms 103, the furnace cover body 20 is arranged between the pair of support arms 103, and is slidingly connected to the support arms 103 through a pair of mounting blocks 101, a pair of hydraulic cylinders 102 are arranged on the mounting beam 104, and the output ends of the pair of hydraulic cylinders 102 are respectively fixedly connected to the mounting blocks 101.

[0048] Preferably, a pair of mounting blocks 101 are both L-shaped mounting blocks 101, a sliding connection block 105 is provided at one end of the mounting block 101, the support arm 103 is provided with a sliding connection groove 106 which is arranged to cooperate with the sliding connection block 105, the sliding connection block 105 is arranged in the sliding connection groove 106 and is slidably connected to the support arm 103, and the other end of the mounting block 101 is fixedly connected to the top of the lower cover body 201.

[0049] When in use, the hydraulic cylinder 102 drives the mounting block 101 , thereby driving the lower cover body 201 , and further driving the furnace cover body 20 to rise or fall, thereby realizing the opening or closing of the furnace cover body 20 .

[0050] In order to facilitate fixing the utility model on the steelmaking furnace, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that a pair of support arms 103 are each provided with an arc-shaped fixing plate 107, and the two arc-shaped fixing plates 107 are fixed by a fixing member.

[0051] Preferably, connecting pieces 108 are provided at both ends of the arc-shaped fixing piece 107, and the fixing parts include a connecting screw 109 and a matching nut 110, and one end of the connecting screw 109 passes through the connecting piece 108 on the same side of the two arc-shaped fixing pieces 107 and is threadedly connected to the matching nut 110.

[0052] When in use, the two arc-shaped fixing plates 107 can be matched with the furnace body of the steelmaking furnace, and then the connection screw 109 and the matching nut 110 can be tightened to complete the connection between the utility model and the steelmaking furnace.

[0053] Working principle of this utility model:

[0054] The utility model uses a connecting piece to set the upper cover 200 and the lower cover 201 to be detachably connected, so as to facilitate cleaning of the structure in the cooling cavity 202. When in use, the three connecting rods 209 pass through the three second connecting ports 211 respectively and are connected to the connecting rotary sleeve 210, so that the upper cover 200 and the lower cover 201 are fixedly connected, and the cooling cavity 202 is closed by the upper cover 200, so as to achieve the sealing of the cooling cavity 202. After long-term use, the upper cover 200 and the lower cover 201 can be disassembled by removing the connecting rotary sleeve 210 from the connecting rod 209, so that the inside of the cooling cavity 202 can be cleaned.

[0055] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A mobile steelmaking furnace cover structure, characterized in that: The invention comprises a lifting assembly (10) and a furnace cover body (20), wherein the furnace cover body (20) is arranged on the lifting assembly (10), the lifting assembly (10) is used to drive the furnace cover body (20), the furnace cover body (20) comprises an upper cover body (200) and a lower cover body (201), a cooling cavity (202) is arranged on the top of the lower cover body (201), the upper cover body (200) and the cooling cavity (202) are arranged in cooperation with each other and are used to seal the cooling cavity (202), and a water inlet pipe (203) and a water outlet pipe (204) are arranged on the top of the upper cover body (200), and the water inlet pipe (203) and the water outlet pipe (204) pass through the upper cover body (200) and are connected with the cooling cavity (202); A boss (205) is provided in the cooling cavity (202), a flue gas flow duct tube (206) is provided in the middle of the boss (205), one end of the flue gas flow duct tube (206) passes through the boss (205) and the lower cover (201), and is fixedly connected to the boss (205) and the lower cover (201), a first connecting port (207) is provided on the upper cover (200) and is arranged in coordination with the flue gas flow duct tube (206), a first sealing ring (208) is provided in the first connecting port (207), and the other end of the flue gas flow duct tube (206) passes through the first connecting port (207) and is slidably connected to the upper cover (200); The upper cover body (200) and the lower cover body (201) are detachably connected via a connecting piece, the connecting piece comprising three connecting rods (209) and three connecting rotary sleeves (210), one end of the three connecting rods (209) is arranged on the boss (205) and is fixedly connected to the boss (205), the upper cover body (200) is provided with three second connecting ports (211) for the three connecting rods (209) to pass through, a second sealing ring (212) is arranged in the second connecting port (211), the other end of the connecting rod (209) passes through the second connecting port (211) respectively, and is slidably connected to the upper cover body (200), and the connecting rotary sleeve (210) is arranged at one end of the connecting rod (209) passing through the connecting port, and is threadedly connected to the connecting rod (209).

2. The mobile steelmaking furnace cover structure according to claim 1, characterized in that: A sealing gasket (213) is provided between the connecting rotary sleeve (210) and the upper cover body (200), and the sealing gasket (213) is sleeved on one end of the connecting rod (209) passing through the connecting port.

3. The mobile steelmaking furnace cover structure according to claim 2, characterized in that: A convex ring (214) is provided at the bottom of the upper cover body (200), and a groove (215) matched with the convex ring (214) is provided on the side wall of the cooling cavity (202), and the convex ring (214) can be inserted into the groove (215) and plugged into the groove (215).

4. The mobile steelmaking furnace cover structure according to claim 3 is characterized in that: A first sealing ring (216) is provided in the groove (215) and is arranged in cooperation with the groove (215).

5. A mobile steelmaking furnace cover structure according to claim 1 or 3, characterized in that: A first blocking ring (217), a second blocking ring (218) and a third blocking ring (219) are provided at the bottom of the lower cover body (201); a mounting groove (220) is provided between the first blocking ring (217) and the second blocking ring (218); and a second sealing ring (221) is provided in the mounting groove (220).

6. The mobile steelmaking furnace cover structure according to claim 5, characterized in that: The lifting assembly (10) comprises a mounting bracket (100), a pair of mounting blocks (101) and a pair of hydraulic cylinders (102); the furnace cover body (20) is slidably connected to the mounting bracket (100) via the pair of mounting blocks (101); the pair of hydraulic cylinders (102) are arranged on the top of the mounting bracket (100), and the output ends of the pair of hydraulic cylinders (102) are respectively fixedly connected to the mounting blocks (101).

7. The mobile steelmaking furnace cover structure according to claim 6, characterized in that: The mounting bracket (100) comprises a pair of support arms (103) and a mounting crossbeam (104); the mounting crossbeam (104) is arranged on the top of the pair of support arms (103) and is fixedly connected to the support arms (103); the furnace cover body (20) is arranged between the pair of support arms (103) and is slidably connected to the support arms (103) via a pair of mounting blocks (101); a pair of hydraulic cylinders (102) are arranged on the mounting crossbeam (104), and the output ends of the pair of hydraulic cylinders (102) are respectively fixedly connected to the mounting blocks (101).

8. The mobile steelmaking furnace cover structure according to claim 7, characterized in that: The pair of mounting blocks (101) are both L-shaped mounting blocks (101), one end of the mounting block (101) is provided with a sliding connection block (105), the support arm (103) is provided with a sliding connection groove (106) arranged in cooperation with the sliding connection block (105), the sliding connection block (105) is arranged in the sliding connection groove (106) and is slidably connected to the support arm (103), and the other end of the mounting block (101) is fixedly connected to the top of the lower cover body (201).

9. The mobile steelmaking furnace cover structure according to claim 8, characterized in that: A pair of support arms (103) are each provided with an arc-shaped fixing piece (107), and the two arc-shaped fixing pieces (107) are fixed by a fixing piece.

10. The mobile steelmaking furnace cover structure according to claim 9, characterized in that: Connecting pieces (108) are provided at both ends of the arc-shaped fixing piece (107), and the fixing piece comprises a connecting screw (109) and a matching nut (110), and one end of the connecting screw (109) passes through the connecting piece (108) located on the same side of the two arc-shaped fixing pieces (107) and is threadedly connected to the matching nut (110).

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