Lifting door mechanism of smoke hood

Abstract

The invention relates to a lifting door mechanism of a smoke hood, which comprises a smoke hood body, a lifting door body is arranged outside the smoke hood body, the lifting door body is composed of a plurality of sub-block bodies, and the sub-block bodies are connected through connecting piece assemblies; the connecting piece assembly comprises a connecting plate and a bolt, the bolt penetrates through the block body and the connecting plate, a bolt sleeve is arranged at the joint of the block body and the bolt, a nut is arranged on one side of the bolt sleeve, the nut and the connecting plate are arranged on the same side, a certain gap h1 is formed between the side wall of the connecting plate and the side wall of the bolt sleeve, and a certain gap h2 is formed between the upper wall of the bolt sleeve and the block body. The lifting door body adopts a hanging form and consists of a plurality of sub-block bodies, the sub-block bodies are quadrilateral bodies which are not greater than 500 * 500mm, bolt sleeves are arranged at the connecting bolts, so that the connecting plates have movable gaps, and the lifting door body can automatically move and recover if being deformed.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of lift door mechanism of smoke hood, mainly for the smoke hood feeding opening of melting material tower in melting furnace. BACKGROUND

[0002] At the smoke hood feeding opening of melting material tower in melting furnace, it is generally necessary to set up smoke hood door, smoke hood door opens when feeding, smoke hood door closes after feeding is completed, to prevent hot flue gas overflow.

[0003] The smoke hood door in prior art is as shown in Figure 1 It is in the form of translation door, translation door 19 is driven in left and right in upper guide rail 16 and lower support rail 17 by driving motor 18.But, since the temperature of hot flue gas in smoke hood is higher, and the size of door is larger (generally 1.8m*1.3m), there are problems such as deformation of translation door and deformation of upper guide rail after a period of use, which affects the sealing effect of smoke hood body, and also increases the cost of replacement.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] In view of the above technical problems of prior art, the purpose of the present application is to provide a kind of lift door mechanism of smoke hood, the lift door body is in the form of hanging, and the lift door body is composed of several sub-blocks, the sub-block is four-edge body not more than 500*500mm, bolt sleeve is arranged at the connecting bolt, so that the connecting plate has a movable gap, and the lift door body can automatically move and recover if deformation occurs.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical scheme: A kind of lift door mechanism of smoke hood, including smoke hood body, the outside of the smoke hood body is provided with lift door body, the lift door body is composed of several sub-blocks, each sub-block is connected by connecting piece assembly;The connecting piece assembly includes connecting plate and bolt, the bolt passes through sub-block and connecting plate, bolt sleeve is arranged at the connecting place of sub-block and bolt, one side of the bolt sleeve is provided with nut, the nut is on the same side of connecting plate, there is a certain gap h1 between the side wall of connecting plate and the side wall of bolt sleeve, there is a certain gap h2 between the upper wall of bolt sleeve and sub-block, the h1 is 1-1.2mm, the h2 is 2-2.2mm;The upper part of the lift door body is provided with crossbeam, the lower part of the lift door body is provided with guide wheel, the smoke hood body is provided with lifting transmission assembly and driving assembly, the lower part of the smoke hood body is provided with guide rail, the driving assembly is connected with lifting transmission assembly, the lifting transmission assembly is connected with crossbeam, the guide wheel slides in guide rail.

[0007] The inner side of the sub-block is provided with several layers of fiber mats, and the outer side of the fiber mats is provided with a steel wire mesh.

[0008] The sub-block is a four-edge body with a size not greater than 500mm*500mm.

[0009] The driving assembly comprises a cylinder, the lifting transmission assembly comprises a movable pulley connected to the output end of the cylinder, a steel wire rope is arranged on the movable pulley, a rack is arranged above the smoke cover body, one end of the steel wire rope is connected to the rack, the other end of the steel wire rope is connected with a transmission ring chain, a driven pulley one, a driven pulley two and a driven pulley three are arranged on the rack, the transmission ring chain passes through the driven pulley one and is connected to the two sides of the lifting door body through the driven pulley two and the driven pulley three.

[0010] The connection between the steel wire rope and the rack is provided with a flower basket screw.

[0011] The driven pulley two is arranged on the rack adjacent to the driven pulley one, and the driven pulley three is arranged on the rack away from the driven pulley one.

[0012] The cross beam is provided with a tension member, and the transmission ring chain is connected with the tension member.

[0013] The lifting door mechanism of the smoke cover has the following beneficial effects: 1、The lifting door body in the application adopts a hanging form, and the movable pulley is driven to rotate by the cylinder, the steel wire rope is rolled in the groove of the movable pulley, the transmission ring chain is driven to move, and finally the lifting door body is driven to rise and fall, so that the lifting door body rises and falls in the guide rail through the guide wheel, the purpose of closing and opening the lifting door body is achieved, the stroke of the cylinder is half of the stroke of the lifting door body, the lifting efficiency is improved, and the length of the cylinder is shortened.

[0014] 2、The lifting door body in the application is composed of a plurality of sub-blocks, the sub-block is a four-edge body with a size not greater than 500*500mm, a bolt sleeve is arranged at the connecting bolt, the connecting plate has a movable gap, the lifting door body can move and restore itself if it is deformed, the service life of the application is prolonged, and the replacement cost is reduced.

[0015] 3、The fiber mats and steel wire meshes arranged inside the sub-block are flexible and will not be damaged when the outer steel plate deforms and moves, further prolonging the service life of the application and reducing the replacement cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the prior art; Figure 2This is a schematic diagram of the main structure of the lifting door when it is closed in this invention; Figure 3 This is a side view of the lifting door structure when it is closed in this invention; Figure 4 This is a schematic diagram of the main structure of the lifting door in this invention when it is open; Figure 5 This is a side view of the lifting door body in this invention when it is open; Figure 6 This is a schematic diagram of the arrangement of the transmission chain in this invention; Figure 7 This is a schematic diagram illustrating the relationship between the wire rope and the movable pulley in this invention; Figure 8 This is a schematic diagram of the main structure of the lifting door body in this invention; Figure 9 This is a side view of the lifting door structure in this invention; Figure 10 for Figure 9 Enlarged structural diagram of section AA; Among them, 1 is the smoke hood body, 2 is the lifting door body, 21 is the segment body, 211 is the fiber blanket, 212 is the wire mesh, 213 is the anchor nail, 22 is the connecting component assembly, 221 is the connecting plate, 222 is the bolt, 223 is the bolt sleeve, 224 is the nut, 3 is the crossbeam, 31 is the through hole, 4 is the guide wheel, 5 is the guide rail, 6 is the cylinder, 7 is the wire rope, 8 is the movable pulley, 9 is the frame, 10 is the transmission chain, 11 is the driven wheel one, 12 is the driven wheel two, 13 is the driven wheel three, 14 is the turnbuckle, 15 is the tension component, 16 is the upper guide rail, 17 is the lower support rail, 18 is the drive motor, and 19 is the sliding door. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0018] like Figures 2-7 As shown, the lifting door mechanism of the fume hood of the present invention includes a fume hood body 1, a lifting door body 2 disposed on the outside of the fume hood body 1, a crossbeam 3 disposed on the upper part of the lifting door body 2, and the lifting door body 2 is in a suspended form. The crossbeam 3 is made of 100*100*6mm square tubing, made of 304 stainless steel, and the side wall of the crossbeam 3 is provided with a row of through holes 31 with a diameter of 50mm to prevent thermal deformation. The lower part of the lifting door body 2 is provided with guide wheels 4, the fume hood body 1 is provided with a lifting transmission assembly and a drive assembly, and a guide rail 5 is provided below the fume hood body 1. The drive assembly is connected to the lifting transmission assembly, the lifting transmission assembly is connected to the crossbeam 3, and the guide wheels 4 slide within the guide rail 5.

[0019] Further, the driving assembly of the present application comprises a cylinder 6, and the lifting transmission assembly comprises a movable pulley 8 connected to the output end of the cylinder 6, so that the stroke of the cylinder 6 is half of the stroke of the lifting door body 2. The movable pulley 8 is provided with a steel wire rope 7, which rolls in the groove of the movable pulley 8, as shown in Figure 7 The upper part of the smoke hood body 1 is provided with a rack 9, one end of the steel wire rope 7 is connected to the rack 9, and the other end is connected with a transmission ring chain 10. The rack 9 is provided with a driven pulley one 11, a driven pulley two 12 and a driven pulley three 13. The driven pulley two 12 is arranged at a position adjacent to the driven pulley one 11 on the rack 9, and the driven pulley three 13 is arranged at a position away from the driven pulley one 11 on the rack 9. The two sides of the cross beam 3 are provided with tension members 15, the transmission ring chain 10 passes through the driven pulley one 11, and is connected to the tension members 15 through the driven pulley two 12 and the driven pulley three 13, respectively. The connection between the steel wire rope 7 and the rack 9 is provided with a basket screw 14 for adjusting the length of the transmission ring chain 10 and the steel wire rope 7.

[0020] In use, the cylinder 6 drives the movable pulley 8 to rotate, which drives the steel wire rope 7 to roll in the groove of the movable pulley 8, thereby driving the transmission ring chain 10 to move, and finally driving the lifting door body 2 to rise and fall, so that the lifting door body 2 rises and falls in the guide rail 5 through the guide wheel 4, achieving the purpose of closing and opening the lifting door body 2.

[0021] Further, in order to adapt the lifting door body 2 in the present application to various environments, as shown in Figures 8-10 The lifting door body 2 in the present application is composed of a plurality of block bodies 21, each of which is a four-edged body with a size not greater than 500mm*500mm, such as a four-edged body with a size of 450mm*450mm. Each of the block bodies 21 is connected through a connecting member assembly 22. The connecting member assembly 22 comprises a connecting plate 221 and a bolt 222, the bolt 222 passes through the block body 21 and the connecting plate 221, and the connection between the block body 21 and the bolt 222 is provided with a bolt sleeve 223. One side of the bolt sleeve 223 is provided with a nut 224, and the nut 224 is on the same side of the connecting plate 221. After the nut 224 is tightened, spot welding is performed to prevent loosening.

[0022] There is a certain gap h1 between the side wall of the connecting plate 221 and the side wall of the bolt sleeve 223, and the gap h1 is between 1-1.2mm, such as 1mm, 1.1mm or 1.2mm. There is a certain gap h2 between the upper wall of the bolt sleeve 223 and the block body 21, and the gap h2 is between 2-2.2mm, such as 2mm, 2.1mm or 2.2mm, so that the connecting plate 221 has a certain activity gap, and the lifting door plate 2 can restore itself if it is deformed.

[0023] Further, the inner side of the block 21 is provided with several layers of fiber blanket 211, such as two layers of 50mm fiber blanket 211 for heat preservation and insulation. The outer side of the fiber blanket 211 is provided with a steel mesh 212. The steel mesh 212 and the fiber blanket 211 are pressed by anchor nails 213 and nuts, and are then spot-welded to prevent loosening after the nuts are tightened. The fiber blanket 211 and the steel mesh 212 are both flexible, and can not be damaged when the outer side steel plate is deformed or moved.

[0024] The above examples are only used to explain the inventive concept of the present application, and are not intended to limit the protection scope of the present application. Any non-essential modification of the present application using the concept shall fall within the protection scope of the present application.

Claims

1. A lifting door mechanism for a fume hood, characterized in that: The device includes a smoke hood body, with a lifting door body on its exterior. The lifting door body is composed of several segments, each segment connected by a connecting assembly. The connecting assembly includes a connecting plate and bolts, the bolts passing through the segments and the connecting plate. A bolt sleeve is provided at the connection between the segment and the bolt, and a nut is provided on one side of the bolt sleeve, the nut being on the same side as the connecting plate. There is a certain gap h1 between the side wall of the connecting plate and the side wall of the bolt sleeve, and a certain gap h2 between the upper wall of the bolt sleeve and the segment. h1 is 1-1.2 mm, and h2 is 2-2.2 mm. The upper part of the lifting door body has a crossbeam, and the lower part of the lifting door body has guide wheels. The smoke hood body is equipped with a lifting transmission assembly and a drive assembly, and a guide rail is provided below the smoke hood body. The drive assembly is connected to the lifting transmission assembly, and the lifting transmission assembly is connected to the crossbeam. The guide wheels slide within the guide rail.

2. The lifting door mechanism of the fume hood as described in claim 1, characterized in that: The inner side of the segment is provided with several layers of fiber blankets, and the outer side of the fiber blankets is provided with wire mesh. The wire mesh and the fiber blankets are pressed together by anchor nails and nuts.

3. The lifting door mechanism of the fume hood as described in claim 1, characterized in that: The segmented body is a quadrilateral with a size not exceeding 500mm*500mm.

4. The lifting door mechanism of the fume hood as described in claim 1, characterized in that: The drive assembly includes a cylinder, and the lifting transmission assembly includes a movable pulley connected to the output end of the cylinder. A steel wire rope is provided on the movable pulley. A frame is provided above the smoke hood body. One end of the steel wire rope is connected to the frame, and the other end of the steel wire rope is connected to a transmission chain. A driven wheel one, a driven wheel two, and a driven wheel three are provided on the frame. The transmission chain passes through driven wheel one and is connected to both sides of the lifting door body through driven wheel two and driven wheel three, respectively.

5. The lifting door mechanism of the fume hood as described in claim 4, characterized in that: Turnbuckles are provided at the connection between the wire rope and the frame.

6. The lifting door mechanism of the fume hood as described in claim 4, characterized in that: The driven wheel two is located on the frame adjacent to the driven wheel one, and the driven wheel three is located on the frame away from the driven wheel one.

7. The lifting door mechanism of the fume hood as described in claim 4, characterized in that: The crossbeam is equipped with a tension member, and the transmission chain is connected to the tension member.

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