Strip steel cleaning system

Abstract

The utility model relates to a strip steel cleaning system which comprises a plurality of cleaning tanks, every two adjacent cleaning tanks are connected through a transition guide pipe, each transition guide pipe is of a box-type structure, the end portions of the left guide pipe and the right guide pipe are respectively provided with a steel passing opening for strip steel to pass through, the two ends of each cleaning tank are respectively provided with an end portion connecting seat, and the end portion connecting seats are of a box-type structure. A first notch is formed in the top plate of the connecting seat, a second notch is formed in the end wall of the connecting seat, the first notch and the second notch are communicated to form an insertion groove, the end of the guide pipe is inserted into the insertion groove in the corresponding side, the top of the guide pipe is hung on the top plate of the connecting seat, and the bottom of the guide pipe is placed at the bottom of the second notch. The sealing connection between the adjacent cleaning tanks can be ensured, dust in air is prevented from polluting strip steel, and residual liquid on the surface of the strip steel is prevented from dripping out of the tank body; and the transition guide pipe is detachably matched with the end connecting seat, so that the transition guide pipe can be conveniently disassembled and assembled, the cleaning tank can be conveniently overhauled and maintained, different cleaning tanks can be conveniently combined and connected, and the flexibility is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of strip steel production, and particularly relates to a strip steel cleaning system. Background Art

[0002] In strip steel production, cleaning tanks are a crucial piece of equipment. They may be used before and after pickling, and before coating, to improve strip surface cleanliness and thus strip processing quality. Currently, most strip steel cleaning operations are performed using a single cleaning tank. This leaves much to be desired in terms of strip cleaning quality, and it also struggles to meet the demands of production lines with high strip speeds. For lines with multiple cleaning tanks connected in series, adjacent tanks are rarely sealed. Although squeeze rollers are typically installed at the tank outlet, residual liquid on the strip surface inevitably drips onto the outside of the tank. Furthermore, airborne dust can easily affect strip surface quality. Utility Model Content

[0003] The utility model relates to a strip steel cleaning system, which can at least solve some defects of the prior art.

[0004] The utility model relates to a strip steel cleaning system, comprising a plurality of cleaning tanks, wherein each two adjacent cleaning tanks are connected by a transition conduit, the transition conduit being a box-type structure and the left and right conduit ends are respectively provided with steel-passing openings for the strip steel to pass through, the two ends of the cleaning tank are respectively provided with end connecting seats, the end connecting seats being a box-type structure, and a first notch is provided on the top plate of the connecting seat and a second notch is provided on the end wall of the connecting seat, the first notch is connected to the second notch to form a slot, the end of the conduit is inserted into the slot on the corresponding side and the top is mounted on the top plate of the connecting seat and the bottom is placed on the bottom of the second notch.

[0005] As one of the embodiments, both ends of the catheter top plate extend horizontally outward to form a mounting plate, and a first constraint plate extends downward from the end of the mounting plate. The connecting seat top plate protrudes upward to form a support plate, and the middle part of the mounting plate is placed on the support plate on the corresponding side.

[0006] As one of the implementation modes, the bottom end of the first restraining plate abuts against the top plate of the connecting seat on the corresponding side.

[0007] As one of the implementation modes, second constraint plates are protruded downwards at both ends of the bottom plate of the conduit, and the second constraint plates are located in the inner cavity of the end connection seat.

[0008] As one of the implementation modes, the end of the conduit is clearance-fitted with the wall of the slot on the corresponding side.

[0009] As one of the implementation modes, the connection seat bottom plate of the end connection seat is arranged obliquely and the top end is connected to the connection seat end wall.

[0010] As one of the embodiments, a drainage pipe is provided at each end of the cleaning tank. The inlet end of the drainage pipe is connected to the inner cavity of the end connecting seat and is arranged close to the bottom plate of the catheter. The outlet end of the drainage pipe is located in the cleaning tank and faces the bottom of the cleaning tank.

[0011] As one of the implementation methods, two groups of guide slopes are provided on the upper surface of the conduit bottom plate, and the two groups of guide slopes slope from the middle of the conduit bottom plate toward the two ends of the conduit bottom plate respectively.

[0012] As one of the implementation modes, sealing units are provided at both the strip steel inlet and the strip steel outlet of the cleaning tank.

[0013] As one of the implementation modes, a handle is provided on the top plate of the catheter.

[0014] The utility model has at least the following beneficial effects:

[0015] In the utility model, two adjacent cleaning tanks are connected by a transition duct, which can ensure the sealed connection between the adjacent cleaning tanks, avoid dust in the air from contaminating the strip steel and residual liquid on the surface of the strip steel from dripping to the outside of the tank body; the transition duct and the end connecting seat are detachable and matched, which can facilitate the disassembly and assembly of the transition duct, as well as the inspection and maintenance of the cleaning tank, and also facilitate the combination connection of different cleaning tanks, with high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the structure of a cleaning tank provided in an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the transition duct;

[0019] Figure 3 A schematic diagram of the installation structure of the transition duct provided in an embodiment of the present utility model;

[0020] Figure 4 Schematic diagram of the layout of the spray washing unit and the brush washing unit. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-Figure 3 , an embodiment of the utility model provides a strip steel cleaning system, comprising a plurality of cleaning tanks, each adjacent cleaning tanks being connected by a transition duct, the transition duct being a box-type structure and the left and right duct ends being respectively provided with steel-passing openings for the strip steel to pass through, end connecting seats being respectively provided at both ends of the cleaning tank, the end connecting seats being a box-type structure and a first notch being provided on the top plate of the connecting seat and a second notch being provided on the end wall of the connecting seat, the first notch being connected to the second notch being connected to form a slot, the end of the duct being inserted into the slot on the corresponding side and the top being mounted on the top plate of the connecting seat and the bottom being resting on the bottom of the second notch.

[0024] The above-mentioned transition duct is connected through a duct top plate, a duct bottom plate and two duct end plates to form a box-type structure, and steel openings are formed on the two duct end plates; in some embodiments, the two duct ends of the transition duct can also be open, that is, the above-mentioned two duct end plates are eliminated.

[0025] Optionally, a handle is provided on the top plate of the duct to facilitate the disassembly and assembly of the transition duct.

[0026] Preferably, the clearance between the end of the conduit and the slot wall on the corresponding side is matched, which can improve the connection sealing between the transition conduit and the end connecting seat, and facilitate the disassembly and assembly of the transition conduit. For example, the slot width of the first slot and the slot width of the second slot can be made the same as or slightly larger than the length of the transition conduit (this length direction is parallel to the width direction of the strip).

[0027] In one embodiment, Figure 2 and Figure 3The two ends of the duct top plate extend horizontally outward to form mounting plates, and the ends of the mounting plates extend downward to form first constraint plates. The top plate of the connection seat is protruding upward to form a support plate, and the middle portion of the mounting plate rests on the support plate on the corresponding side, so that the first constraint plate is located between the support plate and the adjacent cleaning tank, that is, the first constraint plate is located on the side of the support plate away from the duct top plate. In this structure, on the one hand, the structural safety of the transition duct can be ensured by the interference constraint effect between the first constraint plate and the support plate; on the other hand, a labyrinth seal effect can be formed at the connection between the transition duct and the upper side of the end connection seat, effectively improving the sealing performance of the connection between the transition duct and the end connection seat. Furthermore, when the bottom end of the first constraint plate abuts against the top plate of the connection seat on the corresponding side, the above-mentioned sealing effect is even better.

[0028] In one embodiment, Figure 2 and Figure 3 Second constraint plates are formed downwardly from both ends of the duct base plate. These second constraint plates are located within the inner cavity of the end connector, specifically on the side of the connector end wall away from the duct base plate. This structure not only ensures the structural safety of the transition duct through the interference constraint effect between the second constraint plates and the connector end wall, but also creates a labyrinth seal at the underside of the transition duct and the end connector, effectively improving the sealing performance of the connection between the transition duct and the end connector.

[0029] In one embodiment, Figure 3 The bottom plate of the end connector is tilted and its top end is connected to the end wall of the connector. This structure facilitates the collection of cleaning liquid in the end connector. In particular, when the inner cavity of the end connector is connected to the cleaning tank, the cleaning liquid collected in the end connector can be returned to the cleaning tank, which is beneficial to the recycling of the cleaning liquid and prevents the cleaning liquid in the end connector from being unable to be discharged and contaminating the strip steel again. Therefore, a drainage pipe can be provided at each end of the cleaning tank. The inlet end of the drainage pipe is connected to the inner cavity of the end connector and is arranged close to the bottom plate of the conduit. The outlet end of the drainage pipe is located in the cleaning tank and faces the bottom of the cleaning tank. This facilitates the return of the cleaning liquid collected in the end connector to the cleaning tank.

[0030] In one embodiment, Figure 2 and Figure 3 Two sets of guide slopes are provided on the upper surface of the duct bottom plate. The two sets of guide slopes slope from the middle of the duct bottom plate to the two ends of the duct bottom plate respectively. Based on this structure, the cleaning liquid dripping into the transition duct through the surface of the strip can flow to the end connecting seat, which is convenient for the recovery of the cleaning liquid.

[0031] In one embodiment, Figure 3The strip steel inlet and strip steel outlet of the cleaning tank are both provided with sealing units, which can improve the structural sealing of the cleaning tank. The sealing unit includes but is not limited to the use of soft sealing strips, etc., which are respectively in contact / gap-matched with the upper and lower surfaces of the strip steel through the soft sealing strips. While achieving the sealing effect, it is also beneficial to remove the residual cleaning liquid on the surface of the strip steel.

[0032] Example 2

[0033] This embodiment provides a cleaning tank 1 , which can be applied to the above-mentioned embodiment 1 as one type of cleaning tank 1 .

[0034] like Figure 1 and Figure 4 The cleaning tank 1 is provided with a strip steel inlet and a strip steel outlet, and a strip steel running channel is defined between the strip steel inlet and the strip steel outlet. A plurality of spraying units 2 and at least one brushing unit 3 are arranged in the cleaning tank 1. The plurality of spraying units 2 are distributed in sequence along the running direction of the strip steel to form a spraying area, and each of the brushing units 3 is distributed in the spraying area; the spraying unit 2 includes a nozzle arranged above and / or below the strip steel running channel, and the brushing unit 3 includes a brush roller 31 and a support roller 32 respectively arranged on the upper and lower sides of the strip steel running channel, and the brush roller 31 and / or the support roller 32 are equipped with a roller lifting drive mechanism.

[0035] The cleaning tank 1 preferably adopts a closed tank structure, including but not limited to forming the closed tank structure by covering the tank body with a tank cover.

[0036] The strip steel inlet and the strip steel outlet are generally arranged at the same height, and the strip steel passes through the cleaning tank 1 in a roughly horizontal state.

[0037] The above-mentioned nozzle is used to spray cleaning liquid. The axial direction of the nozzle is parallel to the width direction of the strip running channel. Multiple nozzles are arranged on the nozzle, and each nozzle is arranged in sequence along the axial direction of the nozzle. The number of nozzles and the spray range ensure that the spray range of the nozzle can cover the width range of the strip.

[0038] In one embodiment, Figure 1 and Figure 4, at least part of the nozzles are first nozzles 21, and the spraying area of ​​the first nozzle 21 intersects with the roller surface of one of the brush rollers 31, wherein, when there are multiple brush rollers 31, each brush roller 31 is configured with at least one first nozzle 21. Since the spraying area of ​​the first nozzle 21 intersects with the roller surface of the brush roller 31, the roller surface of the brush roller 31 (especially the bristles on the roller surface) can be cleaned, thereby improving the working reliability of the brushing unit 3 and reducing the secondary damage to the strip caused by particles on the roller surface of the brush roller 31. In particular, when the intersection position is close to the contact position between the brush roller 31 and the strip (generally the bottom end / top end of the brush roller 31), impurities such as oxide particles brushed off can be washed away in time, thereby improving the cleanliness of the strip.

[0039] More preferably, Figure 4 In addition to intersecting with the roller surface of the corresponding brush roller 31, the spraying area of ​​the first nozzle 21 also intersects with the strip running channel adjacent to the roller surface of the brush roller 31, that is, the first nozzle 21 sprays toward the triangular area formed by the intersection of the brush roller 31 and the strip. This method can not only make the cleaning liquid directly spray the roller surface of the brush roller 31 and the strip surface, but also improve the cleanliness of the strip. In particular, the cleaning liquid can infiltrate the contact area between the brush roller 31 and the strip to form wet brushing. While brushing and spraying, the washed-off particles and other debris can be separated from the brush roller 31 and the strip in time to avoid these debris grinding the strip and the bristles of the brush roller 31. It can not only improve the brushing effect, but also better protect the strip surface and reduce the wear of the bristles.

[0040] Alternatively, as Figure 1 and Figure 4 The first nozzle 21 is arranged on the strip inlet side and the strip outlet side of each brushing unit 3, which can further improve the brushing effect and thus improve the cleanliness of the strip.

[0041] In one embodiment, Figure 1 and Figure 4 Among the nozzles, some are second nozzles 22. The spray area of ​​the second nozzle 22 intersects with the surface of one of the support rollers 32. Because the spray area of ​​the second nozzle 22 intersects with the surface of the support roller 32, it can clean the surface of the support roller 32, thereby reducing secondary damage to the strip caused by particles on the surface of the support roller 32. When there are multiple support rollers 32, each support roller 32 is equipped with at least one second nozzle 22.

[0042] Further preferably, the spraying area of ​​the second nozzle 22 intersects not only the surface of the corresponding support roller 32 but also the strip running channel adjacent to the surface of the support roller 32. That is, the second nozzle 22 sprays toward the triangular area formed by the intersection of the support roller 32 and the strip. This approach not only allows the cleaning liquid to be sprayed directly onto the surface of the support roller 32 and the strip, improving the cleanliness of the strip, but also allows the cleaning liquid to soak into the contact area between the support roller 32 and the strip, effectively protecting the strip surface and reducing wear on the support roller 32.

[0043] Alternatively, as Figure 1 and Figure 4 The second nozzle 22 is arranged at the strip inlet side of the brushing unit 3.

[0044] Optionally, when the second nozzle 22 and the first nozzle 21 are arranged on the same side of the brushing unit 3 (strip steel inlet side / strip steel outlet side), the second nozzle 22 is arranged vertically opposite to the first nozzle 21 on the same side.

[0045] In one embodiment, Figure 1 and Figure 4 Among the nozzles, some are third nozzles 23. All spraying areas of the third nozzles 23 intersect with the strip running channel. The third nozzles 23 are used to spray wash the strip.

[0046] Preferably, there are multiple third nozzles 23, and each third nozzle 23 is arranged in pairs to spray the upper and lower surfaces of the strip, that is, each third nozzle 23 is arranged to form at least one group of spray modules, and each group of spray modules includes two third nozzles 23 arranged relatively on the upper and lower sides of the strip running channel.

[0047] Preferably, at least one set of spray cleaning modules is arranged downstream of the final brush cleaning unit 3 to ensure the cleanliness of the strip at the strip outlet.

[0048] In one embodiment, the spray washing area includes a plurality of spray washing sections arranged in sequence along the running direction of the strip steel, each spray washing section is provided with a spray washing unit 2, and each spray washing section is respectively equipped with a water supply source for supplying water to its own spray washing unit 2.

[0049] Further preferably, the water source configured for the tail spray section is a new water source, and the water sources configured for the remaining spray sections are all water storage tanks. A return water mechanism is provided at the bottom of each spray section, and the return water mechanism of the latter spray section is connected to the water storage tank of the previous spray section.

[0050] Among them, preferably, desalted water is used as the cleaning liquid, the above-mentioned new water supply source is used to supply high-cleanliness desalted water, and the return water of the rear spraying section is used as the feed water of the front spraying section. Therefore, the cleanliness of the cleaning liquid in the tail spraying section is the highest, and then the cleanliness of the cleaning liquid in each forward spraying section gradually decreases. In this way, the cleanliness of the feed water near the strip outlet side can be ensured to be greater than the cleanliness of the feed water near the strip inlet side, which is beneficial to improving the cleanliness of the strip at the strip outlet. In addition, the step-by-step recycling of feed water and return water is also realized, which can reduce water consumption, save energy and increase efficiency.

[0051] Preferably, the bottom trough of each spray section adopts a V-shaped bottom to facilitate return water collection. The return water mechanism generally includes a return water pipe 11, which is connected to the V-shaped bottom of the corresponding spray section. In addition, the bottom troughs of adjacent spray sections are separated by partitions 12. This prevents crosstalk between return water from different spray sections and facilitates the step-by-step recycling of feed and return water.

[0052] Among them, one or more groups of brushing units 3 can be selected according to the size and density of the incoming strip steel particles and the requirements for the cleanliness of the substrate strip steel in subsequent processing. Based on the structure in which the brush roller 31 and / or the support roller 32 are equipped with a roller lifting drive mechanism, multiple groups of brushing units 3 can be set up. When in use, one or more groups of brushing units 3 can be selected according to the actual working conditions.

[0053] Among them, according to actual requirements (such as the requirements for the cleanliness of both sides of the substrate strip in subsequent processing), the brush roller 31 can be designed to be below the strip running channel, or the brush roller 31 can be designed to be above the strip running channel, or some brush rollers 31 can be designed to be above the strip running channel and some brush rollers 31 can be designed to be below the strip running channel. For example, multiple groups of brush rollers 31 are alternately arranged on the upper and lower sides of the strip running channel.

[0054] The lifting drive mechanism can be driven by a pneumatic cylinder / hydraulic cylinder, a motor + screw mechanism, etc. The specific connection structure is not described here. Preferably, the lifting drive mechanism is arranged outside the cleaning tank 1, which can not only improve the structural sealing of the cleaning tank 1, but also improve the operational reliability of the lifting drive mechanism and extend its service life. Accordingly, both ends of the brush roller 31 / support roller 32 need to pass through the cleaning tank 1 before being connected to the lifting drive mechanism.

[0055] In one embodiment, Figure 1 and Figure 4 A squeezing roller 4 is also arranged in the cleaning tank 1. The squeezing roller 4 is arranged adjacent to the strip outlet. The squeezing roller 4 is used to squeeze out residual moisture on the strip surface to provide high-cleanliness strip for subsequent processes.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A strip steel cleaning system comprising a plurality of cleaning tanks, characterized in that: Each adjacent cleaning tank is connected by a transition duct, which is a box-type structure and has steel-passing openings for the strip steel to pass through at the left and right ends of the duct. End connecting seats are respectively provided at both ends of the cleaning tank. The end connecting seats are box-type structures, and a first notch is provided on the top plate of the connecting seat and a second notch is provided on the end wall of the connecting seat. The first notch is connected to the second notch to form a slot, and the end of the duct is inserted into the slot on the corresponding side, and the top is mounted on the top plate of the connecting seat, and the bottom is placed on the bottom of the second notch.

2. The strip steel cleaning system according to claim 1, characterized in that: The two ends of the catheter top plate extend horizontally outward to form a mounting plate, and the end of the mounting plate extends downward to form a first constraint plate. The top plate of the connecting seat protrudes upward to form a support plate, and the middle part of the mounting plate is placed on the support plate on the corresponding side.

3. The strip steel cleaning system according to claim 2, characterized in that: The bottom end of the first restraining plate abuts against the top plate of the connecting seat on the corresponding side.

4. The strip steel cleaning system according to claim 1, wherein: The two ends of the conduit bottom plate are protruded downward to form a second restraining plate, and the second restraining plate is located in the inner cavity of the end connecting seat.

5. The strip steel cleaning system according to claim 1, wherein: The end of the conduit is clearance-matched with the wall of the slot on the corresponding side.

6. The strip steel cleaning system according to claim 1, characterized in that: The connection seat bottom plate of the end connection seat is arranged obliquely and the top end is connected to the connection seat end wall.

7. The strip steel cleaning system according to claim 1 or 6, characterized in that: Drain pipes are respectively provided at both ends of the cleaning tank. The inlet end of the drain pipe is connected to the inner cavity of the end connecting seat and is arranged close to the bottom plate of the catheter. The outlet end of the drain pipe is located in the cleaning tank and faces the bottom of the cleaning tank.

8. The strip steel cleaning system according to claim 1, wherein: Two groups of diversion slopes are arranged on the upper surface of the conduit bottom plate, and the two groups of diversion slopes slope from the middle of the conduit bottom plate to the two ends of the conduit bottom plate respectively.

9. The strip steel cleaning system according to claim 1, characterized in that: Sealing units are provided at the strip steel inlet and the strip steel outlet of the cleaning tank.

10. The strip steel cleaning system according to claim 1, wherein: A handle is provided on the top plate of the catheter.

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