Combined type sealing device for wire rod molten salt cleaning box body and using method

Abstract

The invention belongs to the technical field of metallurgical heat treatment equipment, and particularly relates to a combined sealing device for a wire rod molten salt cleaning box and a using method. A combined type sealing device of a wire rod molten salt cleaning box comprises a cleaning box, a water system, a spraying system and a roller way shaft, steel plate seals are arranged on the two sides of the cleaning box, a conical partition plate is arranged in the middle of each steel plate, and an end face seal, a sealing block, a sealing block gland, a bearing seat and a bearing seat end cover are sequentially arranged on the portion, on the outer side of each conical partition plate, of the cleaning box. A bearing is arranged in the bearing seat, the roller way shaft sequentially penetrates through the conical partition plate, the end face seal, the sealing block, the sealing block gland and the bearing, the roller way shaft penetrates through the bearing seat end cover and then is sleeved with a shaft sleeve and a chain wheel, and the end of the roller way shaft is connected with a transmission shaft end connecting block and a power source connecting block. By means of the combined sealing mode of elastic sealing, pneumatic sealing and the conical partition plate, deformation of the wire rod can be well adapted, it is guaranteed that salt liquid does not leak, and the purpose of online salt liquid cleaning of the wire rod is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical heat treatment equipment, and in particular relates to a wire rod molten salt cleaning box combined sealing device and a use method thereof. Background Art

[0002] In the actual production of wire rods, the online salt bath heat treatment technology can effectively improve the strength of the wire rods. After the salt bath heat treatment, the wire rods need to be washed by a cleaning machine to remove the molten salt, iron oxide and other attachments on their surface.

[0003] When using the existing wire rod molten salt cleaning box, during the cleaning process, the 550°C wire rod is sprayed with 80°C clean water in the cleaning box and is affected by thermal stress. This puts extremely high demands on its bearing box and roller. Not only must the strength of the box be guaranteed at high temperatures, but also large deformation of the box must be avoided to affect the rotation of the roller, and large amounts of salt liquid must be prevented from leaking from the gaps in the roller. However, the existing wire rod molten salt cleaning box cannot meet the sealing requirements. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a combined sealing device for a wire rod molten salt cleaning box and a method of use. Through the combined sealing form of elastic seal + pneumatic seal + conical partition, it can better adapt to its deformation, ensure that the salt liquid does not leak, and the roller can also rotate freely, thereby achieving the purpose of online salt liquid cleaning of the wire rod.

[0005] The technical solution of the present invention is: a wire rod molten salt cleaning box combined sealing device, including a cleaning box, a water system, a spray system and a roller shaft, the two ends of the roller shaft pass through the cleaning box respectively, the cleaning box is provided with a water system above the roller shaft, the spray system is located in the middle of the top of the cleaning box, and is connected to the water system through a pipeline, the roller shaft below the spray system is used to convey the wire rod, the cleaning box is provided with steel plate seals on both sides, the steel plate is provided with a plurality of pairs of circular holes in the middle, and a conical partition is installed inside the circular hole. An end face seal is provided on the cleaning box outside the conical partition, a sealing block is provided on the outside of the end face seal, a sealing block pressure cover is provided on the outside of the sealing block, a bearing seat is provided on the outside of the sealing block pressure cover, a bearing seat end cover is provided on the outside of the bearing seat, a bearing is provided in the bearing seat, the roller shaft passes through the conical partition, the end face seal, the sealing block, the sealing block pressure cover and the bearing in sequence, and the roller shaft passes through the bearing seat end cover on the left side of the cleaning box and is provided with a shaft sleeve and a sprocket, and its ends are connected with a transmission shaft end connecting block and a power source connecting block in sequence.

[0006] A through hole is arranged on the outside of the sealing block, a compressed air interface is arranged outside the through hole, and 0.6-0.8MPa compressed air is passed through the through hole.

[0007] A drainage hole is arranged at the bottom of the cleaning box.

[0008] An axial seal is provided on the inner side of the sealing block close to the roller shaft, and the axial seal includes four groups of graphite packing seals; and the end face seal includes two groups of graphite packing seals.

[0009] The taper of the conical partition is 1:10, and the opening diameter of the conical partition inside the cleaning box is 1.3-1.5 times the diameter of the roller shaft at that location.

[0010] The sealing block, the conical partition plate and the roller shaft are coaxially arranged and symmetrically installed on the outside of the cleaning box.

[0011] The bearing is a high temperature resistant bearing, and the high temperature resistance range is not less than 200 degrees.

[0012] The distance between the wire rod and the spray system ranges from 300 to 500 mm.

[0013] A method for using a wire rod molten salt cleaning box combined sealing device, using the wire rod molten salt cleaning box combined sealing device as described above, comprising the following steps: S1: connect the sprockets of multiple roller shafts in series, and use a driving device to drive the power source connection block to rotate; the conical partition is arranged on the inner wall of the cleaning box body around the roller hole, the axial seal and the end face seal are installed on the sealing block, the sealing block gland is fixed on the sealing block and presses the axial seal, and the sealing block is fixed at the center of the conical partition on the outer side of the cleaning box body and presses the end face seal; S2: After the salt bath, the wire rod enters the cleaning box with the attached molten salt and 550 degrees residual temperature. The spray system is located directly above the wire rod and sprays 80 degrees clean water. At high temperature, even if the side wall of the cleaning box is deformed, the diameter of the conical partition is larger than the diameter of the roller shaft, and the elasticity of the axial sealing elastic seal can still ensure that the sealing block presses the elastic seal. In addition, the compressed air joint installed at the sealing block and the tapered conical partition ensure that the salt solution does not leak.

[0014] The technical effects of the present invention are: 1. The present invention uses a combined sealing form of elastic seal + pneumatic seal + conical partition. The invention can ensure that the roller can better adapt to its deformation under the working conditions of conveying high-temperature wire rods above 550°C and spraying water at 80°C, and ensure that the salt solution does not leak. The roller can also rotate freely, achieving the purpose of online salt solution cleaning of the wire rod; 2. The present invention has a simple and reliable structure, low cost and easy maintenance.

[0015] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic structural diagram of a wire rod molten salt cleaning box combined sealing device according to an embodiment of the present invention.

[0017] Figure markings: 1-power source connecting block, 2-drive shaft end connecting block, 3-sprocket, 4-sleeve, 5-bearing seat end cover, 6-bearing seat, 7-bearing, 8-sealing block gland, 9-sealing block, 10-end face seal, 11-conical partition, 12-cleaning box, 13-water system, 14-spray system, 15-coil, 16-roller shaft, 17-compressed air interface, 18-axial seal. DETAILED DESCRIPTION Example 1

[0018] like Figure 1 As shown, a wire rod molten salt cleaning box combined sealing device comprises a cleaning box 12, a water system 13, a spray system 14 and a roller shaft 16, both ends of the roller shaft 16 respectively pass through the cleaning box 12, a water system 13 is arranged above the roller shaft 16 inside the cleaning box 12, the spray system 14 is located in the middle of the top of the cleaning box 12, and is connected to the water system 13 through a pipeline, the roller shaft 16 below the spray system 14 is used to convey the wire rod 15, steel plate seals are arranged on both sides of the cleaning box 12, a plurality of pairs of circular holes are arranged in the middle of the steel plate, a conical partition 11 is installed inside the circular hole, and the conical partition An end face seal 10 is provided on the cleaning box 12 outside the plate 11, a sealing block 9 is provided on the outside of the end face seal 10, a sealing block gland 8 is provided on the outside of the sealing block 9, a bearing seat 6 is provided on the outside of the sealing block gland 8, a bearing seat end cover 5 is provided on the outside of the bearing seat 6, a bearing 7 is provided in the bearing seat 6, the roller shaft 16 passes through the conical partition 11, the end face seal 10, the sealing block 9, the sealing block gland 8 and the bearing 7 in sequence, the roller shaft 16 passes through the bearing seat end cover 5 on the left side of the cleaning box 12 and is sleeved with a shaft sleeve 4 and a sprocket 3, and its ends are connected with the transmission shaft end connecting block 2 and the power source connecting block 1 in sequence.

[0019] In actual use, the present invention connects the sprockets 3 of multiple roller shafts 16 in series, and uses a driving device to drive the power source connection block 1 to rotate; the conical partition 13 is arranged on the inner wall of the cleaning box 12 and around the roller hole, the axial seal 18 and the end face seal 10 are installed on the sealing block 9, the sealing block gland 8 is fixed on the sealing block 9 and presses the axial seal 18, and the sealing block 9 is fixed to the center of the conical partition 12 on the outer side of the cleaning box 12 and presses the end face seal 10; the wire rod 15 after the salt bath The molten salt and 550-degree residual heat are carried into the cleaning box 12, and the spray system 14 is located directly above the wire rod 15 to spray 80-degree clean water. Even if the side wall of the cleaning box 12 is deformed at high temperature, the diameter of the conical partition 13 is larger than the diameter of the roller shaft 16, and the elasticity of the elastic seal of the axial seal 18 can still ensure that the sealing block 9 presses the elastic seal. In addition, the compressed air connector 17 installed at the sealing block 9 and the tapered conical partition 13 ensure that the salt solution does not leak. The combined sealing form of elastic seal + pneumatic seal + conical partition of the present invention can better adapt to its deformation, ensure that the salt solution does not leak, and the roller can also rotate freely, thereby achieving the purpose of online salt solution cleaning of the wire rod. Example 2

[0020] Preferably, on the basis of Embodiment 1, in this embodiment, a through hole is provided on the outer side of the sealing block 9, and a compressed air interface 17 is provided on the outer side of the through hole, through which 0.6-0.8 MPa compressed air passes.

[0021] In actual use, a through hole is provided on the outside of the sealing block 9 of the present invention, and a compressed air interface 17 is provided outside the through hole to achieve pneumatic sealing at the sealing block 9. Example 3

[0022] Preferably, based on Example 1 or Example 2, in this embodiment, a drainage hole is provided at the bottom of the cleaning box 12 .

[0023] During actual use, the cleaning box 12 of the present invention is provided with a drainage hole at the bottom to facilitate drainage of the cleaning box 12 . Example 4

[0024] Preferably, based on Example 1 or Example 3, in this embodiment, an axial seal 18 is provided on the inner side of the sealing block 9 close to the roller shaft 16, and the axial seal 18 includes four groups of graphite packing seals; the end face seal 10 includes two groups of graphite packing seals.

[0025] During actual use, an axial seal 18 is provided on the inner side of the sealing block 9 close to the roller shaft 16 of the present invention, and the axial seal 18 includes four groups of graphite packing seals; the end face seal 10 includes two groups of graphite packing seals, and the graphite packing seals ensure the elastic sealing effect. Example 5

[0026] Preferably, based on Example 1 or Example 4, in this embodiment, the taper of the conical partition 11 is 1:10, and the opening diameter of the conical partition 11 inside the cleaning box 12 is 1.3-1.5 times the diameter of the roller shaft 16 there.

[0027] During actual use, the taper of the conical partition 11 of the present invention is 1:10, and the opening diameter of the conical partition 11 inside the cleaning box 12 is 1.3-1.5 times the diameter of the roller shaft 16 at that location. Even if the side wall of the cleaning box 12 is deformed at high temperatures, since the diameter of the conical partition 13 is larger than the diameter of the roller shaft 16 and the elasticity of the elastic seal of the axial seal 18 can still ensure that the sealing block 9 presses the elastic seal to achieve sealing. Example 6

[0028] Preferably, on the basis of Example 1 or Example 5, in this embodiment, the sealing block 9 , the conical partition plate 11 and the roller shaft 16 are concentrically arranged and symmetrically installed on the outside of the cleaning box 12 .

[0029] In actual use, the sealing block 9, the conical partition plate 11 and the roller shaft 16 of the present invention are concentrically arranged to ensure the installation sealing effect. Example 7

[0030] Preferably, on the basis of Example 1 or Example 6, in this embodiment, the bearing 7 is a high temperature resistant bearing, and the high temperature resistance range is not less than 200 degrees.

[0031] In actual use, the bearing 7 of the present invention is a high temperature resistant bearing, and the high temperature resistance range is not less than 200 degrees, which ensures the use effect. Example 8

[0032] Preferably, based on Example 1 or Example 7, in this embodiment, the distance between the wire rod 15 and the spray system 14 is in the range of 300-500 mm.

[0033] In actual use, the distance between the wire rod 15 and the spray system 14 of the present invention is in the range of 300-500 mm to ensure the cleaning effect. Example 9

[0034] A method for using a wire rod molten salt cleaning box combined sealing device, using the wire rod molten salt cleaning box combined sealing device as described above, comprising the following steps: S1: connect the sprockets 3 of multiple roller shafts 16 in series, and use a driving device to drive the power source connection block 1 to rotate; the conical partition 13 is arranged on the inner wall of the cleaning box 12 around the roller hole, the axial seal 18 and the end face seal 10 are installed on the sealing block 9, the sealing block gland 8 is fixed on the sealing block 9 and presses the axial seal 18, and the sealing block 9 is fixed at the center of the conical partition 12 on the outer side of the cleaning box 12 and presses the end face seal 10; S2: After the salt bath, the wire rod 15 enters the cleaning box 12 with the attached molten salt and 550 degrees residual temperature. The spray system 14 is located directly above the wire rod 15 and sprays 80 degrees clean water. At high temperature, even if the side wall of the cleaning box 12 is deformed, since the diameter of the conical partition 13 is larger than the diameter of the roller shaft 16, and the elasticity of the elastic seal of the axial seal 18 can still ensure that the sealing block 9 presses the elastic seal, and the compressed air joint 17 installed at the sealing block 9 and the tapered conical partition 13 ensure that the salt solution does not leak.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A wire rod molten salt cleaning box combined sealing device, characterized in that: The invention comprises a cleaning box (12), a water system (13), a spray system (14) and a roller shaft (16), wherein both ends of the roller shaft (16) pass through the cleaning box (12), a water system (13) is arranged inside the cleaning box (12) above the roller shaft (16), the spray system (14) is located in the middle of the top of the cleaning box (12) and is connected to the water system (13) through a pipeline, the roller shaft (16) below the spray system (14) is used to convey the wire rod (15), steel plates are provided on both sides of the cleaning box (12), a plurality of pairs of circular holes are provided in the middle of the steel plates, a conical partition (11) is installed inside the circular hole, and an end surface is provided on the cleaning box (12) outside the conical partition (11). A seal (10), wherein a sealing block (9) is disposed on the outer side of the end face seal (10), a sealing block gland (8) is disposed on the outer side of the sealing block gland (8), a bearing seat (6) is disposed on the outer side of the bearing seat (6), a bearing seat end cover (5) is disposed on the outer side of the bearing seat (6), a bearing (7) is disposed inside the bearing seat (6), the roller shaft (16) passes through the conical partition (11), the end face seal (10), the sealing block (9), the sealing block gland (8) and the bearing (7) in sequence, the roller shaft (16) passes through the bearing seat end cover (5) on the left side of the cleaning box (12), and is then provided with a shaft sleeve (4) and a sprocket (3), and its ends are sequentially connected to a transmission shaft end connection block (2) and a power source connection block (1).

2. According to claim 1, a wire rod molten salt cleaning box combined sealing device is characterized in that: A through hole is provided on the outside of the sealing block (9), and a compressed air interface (17) is provided outside the through hole, through which 0.6-0.8 MPa compressed air flows.

3. According to claim 1, a wire rod molten salt cleaning box combined sealing device is characterized in that: The bottom of the cleaning box (12) is provided with a drainage hole.

4. According to claim 1, a wire rod molten salt cleaning box combined sealing device is characterized in that: An axial seal (18) is provided on the inner side of the sealing block (9) close to the roller shaft (16), and the axial seal (18) includes four groups of graphite packing seals; and the end face seal (10) includes two groups of graphite packing seals.

5. According to claim 1, a wire rod molten salt cleaning box combined sealing device is characterized in that: The taper of the conical partition (11) is 1:10, and the opening diameter of the conical partition (11) inside the cleaning box (12) is 1.3-1.5 times the diameter of the roller shaft (16) at that location.

6. According to claim 1, a wire rod molten salt cleaning box combined sealing device is characterized in that: The sealing block (9), the conical partition plate (11) and the roller shaft (16) are arranged concentrically and symmetrically mounted on the outside of the cleaning box (12).

7. The wire rod molten salt cleaning box combined sealing device according to claim 1, characterized in that: The bearing (7) is a high temperature resistant bearing, and the high temperature resistance range is not less than 200 degrees.

8. The wire rod molten salt cleaning box combined sealing device according to claim 1, characterized in that: The distance between the wire rod (15) and the spray system (14) is in the range of 300-500 mm.

9. A method for using a wire rod molten salt cleaning box combined sealing device, using the wire rod molten salt cleaning box combined sealing device as claimed in claim 1, characterized in that: The following steps are involved: S1: The sprockets (3) of the plurality of roller shafts (16) are connected in series, and a driving device is used to drive the power source connection block (1) to rotate; a conical partition plate (13) is arranged on the inner side wall of the cleaning box (12) around the roller hole, an axial seal (18) and an end face seal (10) are installed on the sealing block (9), a sealing block gland (8) is fixed on the sealing block (9) and presses the axial seal (18), and the sealing block (9) is fixed at the center of the conical partition plate (12) on the outer side of the cleaning box (12) and presses the end face seal (10); S2: After the salt bath, the wire rod (15) enters the cleaning box (12) with the attached molten salt and residual temperature of 550 degrees. The spray system (14) is located directly above the wire rod (15) and sprays 80-degree clean water. At high temperature, even if the side wall of the cleaning box (12) is deformed, the diameter of the conical partition (13) is larger than the diameter of the roller shaft (16), and the elasticity of the elastic seal of the axial seal (18) can still ensure that the sealing block (9) presses the elastic seal. In addition, the compressed air connector (17) installed at the sealing block (9) and the tapered conical partition (13) ensure that the salt solution does not leak.

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