Roller way water retaining mechanism used for cleaning strip steel and capable of being replaced on line and compensating abrasion

Abstract

The invention discloses a roller way water retaining mechanism used for cleaning strip steel and capable of being replaced online and compensating abrasion, water retaining rings of the mechanism are arranged on shaft necks of transmission sides and operation sides of an upper wringing roller and a lower wringing roller and located at rubber ring positions of the shaft necks, and water retaining doors are arranged on the shaft necks of the transmission sides and the operation sides of the upper wringing roller and the lower wringing roller and located at rubber ring positions of the shaft necks. The water retaining ring is positioned in the water retaining door; the water retaining door is composed of a left frame and a right frame which are opened on the inner sides, parallel plates are arranged in the water retaining door at intervals, a left plastic waterproof plate and a right plastic waterproof plate are inserted into the left frame and the right frame, and the inner sides of the left plastic waterproof plate and the right plastic waterproof plate are matched with shaft necks of the upper wringing roller and the lower wringing roller in shape. And brush hair strips are arranged in the left brush hair plate and the right brush hair plate along the length direction. The water retaining mechanism overcomes the defects of a traditional water retaining structure, effectively improves the water retaining effect, is convenient to open and close, reserves enough space for entering and exiting of the wringing roller, avoids impact of roller replacement operation, ensures strip steel cleaning operation and completely eradicates environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of metallurgical machinery and equipment technology, and in particular to a roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear. Background Technology

[0002] Strip cleaning is a systematic piece of equipment used in the cleaning section of cold rolling mills to remove surface oil, iron powder, and other contaminants from strip steel using physical and chemical methods. It represents an optimized combination of high efficiency and low energy consumption. Each unit is designed to maximize overall cleaning performance, and the balanced and optimized design of the fluid medium ensures that energy loss is minimized.

[0003] The strip cleaning section of the cold rolling production line includes brush roller cleaning, and a rinsing tank is arranged at the end of the cleaning section. Squeeze rollers are installed at the end of the brush cleaning section to achieve zone separation and prevent the media from mixing. The rinsing tank rinses the strip steel, removing residual contaminants and degreasing liquid from its surface. Four to five sets of squeeze rollers are provided to strictly ensure a progressively improved cleaning effect.

[0004] The cleaning medium washes over the surface of the strip steel, splashes in all directions, reaches the journal of the roller conveyor, and is sprayed out from the journal, which increases the cost of alkali solution and may even cause secondary equipment failure and environmental pollution.

[0005] In existing technologies, the waterproof gates used for squeeze rollers are all fixed single-layer labyrinth door panel structures, and some also use brush curtain structures. Fixed door panel waterproof gates are in a fixed position after installation and are only opened when changing rollers. Because of alkaline crystals in the sliding groove of the waterproof gate, movement is difficult, easily resulting in incomplete opening of the door panel. During roller changes, the door panel is impacted by the squeeze roller, causing deformation of the waterproof membrane and later scraping against the water-retaining ring.

[0006] Because the squeeze roller needs to open and close, the waterproof gate needs to be made into a waist-shaped hole to ensure the operation of the squeeze roller, and the alkali solution will spray out from this left empty area. The waterproofing using a brush curtain structure is prone to bristle breakage after the brush curtain rubs against the squeeze roller journal. When the squeeze roller opens and closes subsequently, an empty area is left, and the alkali solution will spray out from this left empty area.

[0007] Neither of the two structures mentioned above can meet environmental protection and production requirements for waterproofing. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a roller deflector mechanism for strip steel cleaning that can be replaced and compensated for wear online. This mechanism overcomes the defects of traditional deflector structures, effectively improves the deflection effect and facilitates opening and closing, leaves enough space for the squeezing roller to enter and exit, avoids the impact of roller changing operation, ensures strip steel cleaning operation and eliminates environmental pollution.

[0009] To solve the above-mentioned technical problems, the present invention provides a roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced and compensated for wear online. The mechanism includes an upper squeezing roller and a lower squeezing roller arranged vertically, and also includes a water-blocking ring and a water-blocking gate. The water-blocking ring is respectively spaced on the journals of the upper squeezing roller and the lower squeezing roller on the drive side and the operating side, and is located at the rubber ring position of the journal. The water-blocking gate is respectively provided on the journals of the upper squeezing roller and the lower squeezing roller on the drive side and the operating side, and the water-blocking ring is located inside the water-blocking gate. The water-blocking gate includes a left frame, a right frame, a left plastic waterproof panel, a right plastic waterproof panel, a left upright plate, a right upright plate, a left brush plate, and a right brush plate. The left and right frames are symmetrically arranged facing each other and have openings on their inner sides. Semicircular rings matching the journals of the upper and lower squeezing rollers are spaced vertically on the opening sides. Parallel plates are spaced parallel to the frame panel and back panel inside the left and right frames. The side plates of the left and right frames have slots along their length. The left and right upright plates are respectively vertically arranged inside the left and right frames and welded to the panel, leaving gaps between them and the parallel plates. The left and right plastic waterproof panels are respectively inserted into the left and right frames through the slots, and their inner shapes are consistent with the inner shapes of the left and right frames. The left and right brush plates are respectively arranged on the panels of the left and right frames, and brush strips are provided along the length of the inner edges of the left and right brush plates.

[0010] Furthermore, the water-blocking ring is interference-fitted with the journals of the upper and lower squeezing rollers.

[0011] Furthermore, the left brush plate and the right brush plate each include an inner clamping plate and an outer clamping plate, and the brush strips are clamped and bonded between the inner clamping plate and the outer clamping plate.

[0012] Furthermore, the left and right brush plates are respectively provided with waist-shaped holes at intervals, and are located on the inner edge of the left and right frame panels through bolts and waist-shaped holes.

[0013] Furthermore, the bristles on the left and right brush plates overlap by half their length.

[0014] Furthermore, the top surfaces of the left and right frames are respectively provided with handles. Because this invention employs the above-mentioned technical solution for an online replaceable and wear-compensating roller conveyor water-blocking mechanism for strip steel cleaning, the water-blocking ring of this mechanism is located on the journals of the upper and lower squeezing rollers on the drive and operating sides, and at the position of the rubber ring on the journal. The water-blocking gate is located on the journals of the upper and lower squeezing rollers on the drive and operating sides, with the water-blocking ring located inside the water-blocking gate. The water-blocking gate consists of a left frame and a right frame with inner openings, with parallel plates spaced apart inside. The left and right plastic waterproof plates are inserted into the left and right frames, and their inner shapes match the journals of the upper and lower squeezing rollers. The left and right frame panels are respectively provided with a left brush plate and a right brush plate, with brush strips arranged along the length direction inside the left and right brush plates. This mechanism overcomes the defects of traditional water-blocking structures, effectively improves the water-blocking effect, facilitates opening and closing, leaves sufficient space for the squeezing rollers to enter and exit, avoids impacts during roller changing operations, ensures strip steel cleaning operations, and eliminates environmental pollution. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a roller conveyor water-blocking mechanism for strip cleaning that can be replaced and compensated for wear online.

[0016] Figure 2 This is a schematic diagram showing the layout of the left and right frames in this structure; Figure 3 This is a schematic diagram showing the separation of the left and right frames in this structure; Figure 4 These are isometric views of the left and right frames of this structure. Figure 5 This is a schematic diagram of the left and right plastic waterproof panels in this facility. Detailed Implementation

[0017] Implementation, for example Figures 1 to 5 As shown, the roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced and compensated for wear online includes an upper squeezing roller 1 and a lower squeezing roller 2 arranged vertically, and also includes a water-blocking ring 3 and a water-blocking gate 4. The water-blocking ring 3 is respectively spaced on the journals of the upper squeezing roller 1 and the lower squeezing roller 2 on the drive side and the operating side, and is located at the rubber ring position of the journal. The water-blocking gate 4 is respectively provided on the journals of the upper squeezing roller 1 and the lower squeezing roller 2 on the drive side and the operating side, and the water-blocking ring 3 is located inside the water-blocking gate 4. The water-blocking gate 4 includes a left frame 41, a right frame 42, a left plastic waterproof panel 43, a right plastic waterproof panel 44, a left upright plate 45, a right upright plate 46, a left brush plate 47, and a right brush plate 48. The left frame 41 and the right frame 42 are symmetrically arranged facing each other and have openings on their inner sides. Semicircular rings matching the journals of the upper squeeze roller 1 and the lower squeeze roller 2 are provided at intervals on the opening sides. Parallel plates 49 are provided at intervals parallel to the frame panel and the back panel inside the left frame 41 and the right frame 42. The side plates of the left frame 41 and the right frame 42 have slots 5 and 6 along their length. The upright plate 45 and the right upright plate 46 are respectively vertically arranged inside the left frame 41 and the right frame 42 and welded to the panel, with a gap between them and the parallel plate 49. The left plastic waterproof plate 43 and the right plastic waterproof plate 44 are respectively inserted into the left frame 41 and the right frame 42 through the slots 5 and 6, and their inner shapes are consistent with the inner shapes of the left frame 41 and the right frame 42. The left brush plate 47 and the right brush plate 48 are respectively arranged on the panel of the left frame 41 and the right frame 42. The inner edges of the left brush plate 47 and the right brush plate 48 are provided with brush strips 7 and 8 along the length direction.

[0018] The left frame 41 and right frame 42 are semi-enclosed boxes with their openings facing the diameter of the squeeze roller shaft, while the rest are enclosed structures. Brush strips 7 and 8 are horizontally and densely covered with bristles 71 and 81 along their length.

[0019] Preferably, the water-blocking ring 3 is interference-fitted with the journals of the upper squeezing roller 1 and the lower squeezing roller 2.

[0020] Preferably, the left brush plate 47 and the right brush plate 48 each include an inner clamping plate and an outer clamping plate, and the brush strips 7 and 8 are clamped and bonded between the inner clamping plate and the outer clamping plate.

[0021] Preferably, the left brush plate 47 and the right brush plate 48 are respectively provided with waist-shaped holes 9 at intervals, and are provided on the inner edge of the panel of the left frame 41 and the right frame 42 through bolts and waist-shaped holes.

[0022] Preferably, the bristles 71 and 81 on the bristle strips 7 and 8 of the left brush plate 47 and the right brush plate 48 overlap by half the bristle length. This is also the maximum adjustment amount for the wear of the bristles on the left and right brush plates. During the adjustment process of the left and right brush plates, they are always in close contact with the shaft diameters of the upper and lower squeeze rollers, forming a sealed space.

[0023] Preferably, the top surfaces of the left frame 41 and the right frame 42 are respectively provided with handles 40.

[0024] This mechanism forms a completely sealed structure through a movable water-blocking gate and compensating bristles. The water-blocking gate opens during roller changes, providing sufficient space for the squeezing roller to enter and exit. After the squeezing roller change is completed, a water-blocking ring and water-blocking gate are installed, and a plastic waterproof plate is inserted, forming the first stage of preliminary water blocking and the second stage of complete sealing.

[0025] The drive-side and operating-side water baffles intercept and seal the cleaning medium splashed at the journal positions of the upper and lower squeezing rollers, and finally allow it to flow back into the rinsing tank.

[0026] The drive-side water gate and the operating-side water gate have the same structure and are installed on the drive side and operating side of the upper and lower squeezing rollers, respectively.

[0027] This mechanism uses both rigid and flexible seals to seal the cleaning medium splashed onto the squeeze roller journal. The first stage is a waterproof labyrinth seal structure formed by two layers of parallel plates located within the left and right frames, which provides initial water blocking. The second stage is a waterproof labyrinth seal structure formed by brush bristles and plastic plates, which provides a secondary seal.

[0028] During installation, hold the handles on the top of the left and right frames and push them toward the journal position respectively. The bristles of the left and right brush plates will fit tightly against the journals of the upper and lower squeeze rollers, at which point the water gate will be in the closed position.

[0029] Two plastic waterproof membranes are inserted into the left and right frames and moved towards each other. The left and right vertical plates guide the insertion of the membranes, reducing the distance between them and compensating for leaks caused by wear. When replacing the squeeze roller, both membranes must be moved to their maximum opposite positions or pulled out completely to avoid damage. Even if the membranes come into contact with the journal during operation, they will wear on the journal, but this will not cause equipment damage due to journal wear.

[0030] Water-retaining rings located on the drive and operating sides of the upper and lower squeeze rollers form a rigid seal. A rigid seal is a rigid intervention method that cannot be adjusted secondary. It is used to block the pressurized water ejected from the journal position and to prevent seepage along the journal, thereby reducing the reflective force of splashing in the journal gap.

[0031] The plastic waterproof membrane and brush bristles form a flexible seal. The flexible seal refers to a flexible intervention method that can compensate for or replace the wear of the left and right brush bristle plates and the left and right plastic waterproof membranes. The dense brush bristles on the left and right brush bristle plates wrap around the journal, which plays a role in cleaning and sealing the journal, while achieving a complete seal.

[0032] The water trapped at the first and second sealing positions returns to the rinsing tank along the bottom groove of the overall frame of the water-blocking gate, minimizing media loss.

[0033] When replacing the upper and lower squeeze rollers, hold the left handle and slide the entire frame to the left, and hold the right handle and slide the entire frame to the right. At this time, the space left by removing the baffle gate provides enough space for the squeeze rollers and bearing housing to enter and exit, and also avoids collisions and damage to the baffle gate caused by replacing the squeeze rollers.

[0034] After the upper and lower squeezing rollers are replaced, the cylinder drives the two squeezing rollers to close, putting them into operation. At this time, hold the left handle and slide the left overall frame to the right, and hold the right handle and slide the right overall frame to the left. After the left and right overall frames are in place, the first and second passes will perform a sealing function.

[0035] Compared with existing technologies, the advantages of this mechanism are that the sealing layer adopts a combination of rigidity and flexibility. During use, the wear of the brush bristles can be effectively compensated manually or automatically. This is a major function that existing technologies have not achieved. In particular, waterproof mechanisms that only use brush bristles suffer from severe bristle flattening. During use, the bristles wear off in the middle, resulting in poor sealing effect and the bristles falling into the tank, artificially increasing the clogging of the filter screen.

[0036] When the plastic waterproof membrane wears down, the gap between the squeeze roller journal and the plastic waterproof membrane increases. The residual water in the seal can break through the seal made of only bristles. Therefore, two plastic waterproof membranes are pushed in to adjust the gap between them and the journal, compensating for the porosity caused by the wear of the plastic waterproof membrane.

[0037] When the bristles wear down or break, the dense bristles will create voids, failing to completely enclose the journal, making it difficult for the flexible seal to achieve a complete seal.

[0038] This device uses oblong holes in the left and right brush plates. When the brush bristles wear down, the left and right brush plates can be moved horizontally and then tightened to compensate for the wear and achieve a complete seal.

[0039] This eliminates the overflow and splashing of alkali liquid in the squeeze roller equipment. Compared with traditional water gates, the water gate of this squeeze roller can be directly pulled out and replaced when the plastic waterproof plate and brush bristles are worn to their limit. There is no need to replace the entire frame of the water gate. It is convenient to operate, safe and reliable, and has no environmental pollution.

Claims

1. A roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensated for wear, comprising an upper squeezing roller and a lower squeezing roller arranged vertically, characterized in that: It also includes a water-blocking ring and a water-blocking gate. The water-blocking ring is respectively spaced on the journals of the upper and lower squeezing rollers on the drive side and the operating side, and is located at the rubber ring position of the journal. The water-blocking gate is respectively located on the journals of the upper and lower squeezing rollers on the drive side and the operating side, and the water-blocking ring is located inside the water-blocking gate. The water-blocking gate includes a left frame, a right frame, a left plastic waterproof panel, a right plastic waterproof panel, a left upright plate, a right upright plate, a left brush plate, and a right brush plate. The left and right frames are symmetrically arranged facing each other and have openings on their inner sides. Semicircular rings matching the journals of the upper and lower squeezing rollers are spaced vertically on the opening sides. Parallel plates are spaced parallel to the frame panel and back panel inside the left and right frames. The side plates of the left and right frames have slots along their length. The left and right upright plates are respectively vertically arranged inside the left and right frames and welded to the panel, leaving gaps between them and the parallel plates. The left and right plastic waterproof panels are respectively inserted into the left and right frames through the slots, and their inner shapes are consistent with the inner shapes of the left and right frames. The left and right brush plates are respectively arranged on the panels of the left and right frames, and brush strips are provided along the length of the inner edges of the left and right brush plates.

2. The roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear, as described in claim 1, is characterized in that: The water-blocking ring is interference-fitted with the journals of the upper and lower squeezing rollers.

3. The roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear, as described in claim 1, is characterized in that: The left and right brush plates each include an inner clamping plate and an outer clamping plate, and the brush strips are clamped and bonded between the inner clamping plate and the outer clamping plate.

4. The roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear, as described in claim 1, is characterized in that: The left and right brush plates are respectively provided with waist-shaped holes at intervals, and are located on the inner edge of the left and right frame panels through bolts and waist-shaped holes.

5. The roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear, as described in claim 1, is characterized in that: The bristles on the left and right brush plates overlap by half their length.

6. The roller conveyor water-blocking mechanism for strip steel cleaning that can be replaced online and compensate for wear, as described in claim 1, is characterized in that: The top surfaces of the left and right frames are each provided with a handle.

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