A water retaining lining plate and a high-pressure water descaling machine

Abstract

The present invention discloses a water retaining lining and a high-pressure water descaling machine, which belong to the technical field of descaling. The water retaining lining includes: a grid-type diverter, a bottom plate, a vibration stopper and a plurality of damping connecting members; the bottom plate is connected to the grid-type diverter and the plurality of damping connecting members; the vibration stopper is arranged between the bottom plate and the grid-type diverter; the grid-type diverter includes: a connecting plate, a plurality of first bars and a plurality of second bars; the connecting plate is connected to the end face of the bottom plate away from the damping connecting member; a plurality of the first bars are arranged on the end face of the connecting plate away from the bottom plate at intervals in the horizontal direction; a plurality of the second bars are arranged on the end face of the connecting plate away from the bottom plate, and are arranged between two adjacent first bars at intervals in the longitudinal direction. The water retaining lining and the high-pressure water descaling machine of the present invention can effectively and for a long time protect the frame from the impact and corrosion of high-pressure water flow.

Description

Technical Field

[0001] The invention relates to the technical field of descaling, and in particular to a water retaining lining plate and a high-pressure water descaling machine. Background Art

[0002] On the hot rolling production line, when the billet is heated at high temperature in the heating furnace and rolled to cool, the billet surface reacts with oxygen to generate oxides, namely iron oxide scale. In the subsequent rolling process, the iron oxide scale on the billet surface will be pressed into the billet matrix, causing pits, pitting, iron oxide scale intrusion and other quality defects on the steel surface, so the slab must be descaled before entering the roller.

[0003] High-pressure water descaling equipment uses high-pressure water jets to produce thermal changes, impacts, vibrations, and scouring on the surface of hot-rolled steel billets, so that the iron oxide layer on the surface of the steel billets is broken and detached. High-pressure water descaling equipment is usually arranged behind the heating furnace and before and after the rolling mill. According to different types of steel, the water pressure of its nozzle jet varies from 20Mpa to 35Mpa. Due to the special process, the high-pressure descaling water needs to be opened in advance before the steel billet enters, and delayed to close after the steel billet passes completely, and the cross-sectional width of the descaling water must be greater than the width of the steel billet. Therefore, before the steel billet formally enters, the steel billet leaves, and the two sides of the steel billet, a large amount of high-pressure descaling water is sprayed on the water collecting cover of the descaling machine or the rolling mill frame. The strong impact stress, impact vibration and high-temperature water corrosion will cause irreversible scouring and chemical corrosion to the water collecting cover of the descaling machine and the surface of the rolling mill frame in a short time, causing the high-pressure water descaling machine and the rolling mill frame to deform, rust, and break. Summary of the invention

[0004] The present invention provides a water retaining lining plate and a high-pressure water descaling machine, which solve or partially solve the technical problem in the prior art that a large amount of high-pressure descaling water is sprayed on a water collecting cover of the descaling machine or a rolling mill frame, causing damage to the water collecting cover of the descaling machine or the rolling mill frame.

[0005] In order to solve the above technical problems, the present invention provides a water retaining lining including: a grille-type diverter, a bottom plate, a vibration stopper and a plurality of damping connecting members; the bottom plate is connected to the grille-type diverter and the plurality of damping connecting members; the vibration stopper is arranged between the bottom plate and the grille-type diverter; the grille-type diverter includes: a connecting plate, a plurality of first bars and a plurality of second bars; the connecting plate is connected to the end surface of the bottom plate away from the damping connecting member; a plurality of the first bars are arranged on the end surface of the connecting plate away from the bottom plate along the lateral intervals; a plurality of the second bars are arranged on the end surface of the connecting plate away from the bottom plate, and are arranged between two adjacent first bars along the longitudinal intervals.

[0006] Furthermore, the cross-sectional shape of the first grid bar and the second grid bar is a triangle.

[0007] Furthermore, a first through hole is transversely opened in the inner side of the first grid bar, and the first through hole is a straight damping hole; a plurality of connecting holes are longitudinally opened on the end surface of the first grid bar facing the second grid bar, and the plurality of connecting holes are connected to the first through hole, and the connecting holes are variable diameter damping holes.

[0008] Furthermore, a plurality of second through holes are longitudinally formed on the second grid bars, and the second through holes are variable diameter damping holes.

[0009] Furthermore, the outer surfaces of the first grid bars and the second grid bars are coated with a high temperature corrosion resistant coating.

[0010] Furthermore, a mounting groove is provided on the end surface of the bottom plate facing away from the damping connecting member, the vibration-stopping member is embedded in the mounting groove, and the thickness of the vibration-stopping member is greater than the depth of the mounting groove.

[0011] Furthermore, the surface of the vibration-stopping member is coated with high-temperature resistant anaerobic sealant.

[0012] Furthermore, the damping connecting member comprises: a connecting frame and an elastic member; the connecting frame is connected to the end surface of the bottom plate away from the grid-type diverter member; and the elastic member is arranged on the end surface of the connecting frame away from the bottom plate.

[0013] Furthermore, the connecting frame includes: a support plate, two bosses and two pressure plates; the two bosses are relatively arranged on the end surface of the support plate away from the support plate and away from the base plate; a groove is formed on the end surface of the boss away from the support plate, and the pressure plate is arranged on the groove; the end of the elastic member is arranged in the groove and is connected to the boss and the pressure plate.

[0014] Based on the same inventive concept, the present application also provides a high-pressure water descaling machine, including the water retaining lining.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0016] Since the bottom plate is connected to the grid-type diverter and multiple damping connectors, the bottom plate can be installed on the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill through multiple damping connectors. Since the vibration-proof member is arranged between the bottom plate and the grid-type diverter, the grid-type diverter includes: a connecting plate, multiple first bars and multiple second bars. The connecting plate is connected to the end face of the bottom plate away from the damping connector. The multiple first bars are arranged on the end face of the connecting plate away from the bottom plate along the lateral intervals, and the multiple second bars are arranged on the end face of the connecting plate away from the bottom plate, and are arranged between two adjacent first bars along the longitudinal intervals. Therefore, when high-pressure water descaling is performed, the high-pressure descaling water first impacts the multiple first bars, the multiple second bars and the connecting plate, and the high-pressure descaling water is diverted by the multiple first bars and the multiple second bars to reduce the high-pressure descaling. The impact force of scaling water can resist impact stress, scouring and peeling and high-temperature water corrosion to achieve impact resistance and scouring resistance. At the same time, the connecting plate and the bottom plate are used to prevent high-pressure descaling water from reaching the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill, so as to avoid the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill being corroded by the high-pressure descaling water. The vibration-stopping parts are used for buffering, which can effectively suppress the impact vibration of the high-pressure descaling water on the bottom plate at the moment of water supply, further reduce the impact force of the high-pressure descaling water, achieve impact resistance and scouring resistance, and multiple damping connecting parts are used for buffering to eliminate the vibration transmission from the bottom plate to the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill, further reduce the impact force of the high-pressure descaling water, achieve impact resistance and scouring resistance, and can effectively and long-term protect the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill from the impact and corrosion of high-pressure water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a water retaining liner provided in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Cross-sectional view of the middle water retaining liner;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the grid-type flow diverter of the middle water retaining lining;

[0020] Figure 4 for Figure 3 A schematic structural diagram of the second through hole of the middle grid-type flow divider;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the damping connector of the grid-type diverter of the middle water retaining liner. DETAILED DESCRIPTION

[0022] See also Figure 1-2 A water retaining lining provided in an embodiment of the present invention comprises: a grid-type diverter 1, a bottom plate 2, a vibration-stopping member 3 and a plurality of damping connecting members 4.

[0023] The bottom plate 2 is connected to the grid-shaped flow divider 1 and multiple damping connectors 4.

[0024] The vibration damping member 3 is arranged between the bottom plate 2 and the grid-shaped flow divider 1.

[0025] The grid-shaped flow divider 1 includes: a connecting plate 1-1, multiple first grid bars 1-2 and multiple second grid bars 1-3.

[0026] The connecting plate 1-1 is connected to the end face of the bottom plate 2 facing away from the damping connector 4.

[0027] Multiple first grid bars 1-2 are arranged at intervals in the transverse direction on the end face of the connecting plate 1-1 facing away from the bottom plate 2.

[0028] Multiple second grid bars 1-3 are arranged on the end face of the connecting plate 1-1 facing away from the bottom plate 2, and are arranged at intervals in the longitudinal direction between two adjacent first grid bars 1-2.

[0029] In the specific implementation manner of the present application, since the bottom plate 2 is connected to the grid-shaped flow divider 1 and multiple damping connectors 4, the bottom plate 2 can be installed on the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill through multiple damping connectors 4. Since the vibration damping member 3 is arranged between the bottom plate 2 and the grid-shaped flow divider 1, and the grid-shaped flow divider 1 includes: a connecting plate 1-1, multiple first grid bars 1-2 and multiple second grid bars 1-3, the connecting plate 1-1 is connected to the end face of the bottom plate 2 facing away from the damping connector 4, multiple first grid bars 1-2 are arranged at intervals in the transverse direction on the end face of the connecting plate 1-1 facing away from the bottom plate 2, and multiple second grid bars 1-3 are arranged on the end face of the connecting plate 1-1 facing away from the bottom plate 2 and are arranged at intervals in the longitudinal direction between two adjacent first grid bars 1-2. Therefore, when high-pressure water descaling is carried out, the high-pressure descaling water first impacts on multiple first grid bars 1-2, multiple second grid bars 1-3 and the connecting plate 1-1. The high-pressure descaling water is divided by multiple first grid bars 1-2 and multiple second grid bars 1-3 to reduce the impact force of the high-pressure descaling water, resist impact stress, erosion and high-temperature water corrosion, and achieve impact resistance and erosion resistance. At the same time, the connecting plate 1-1 and the bottom plate 2 prevent the high-pressure descaling water from reaching the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill, avoiding corrosion of the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill by the high-pressure descaling water. The vibration damping member 3 buffers, which can effectively inhibit the impact vibration of the bottom plate 2 when the high-pressure descaling water is supplied instantaneously, further reducing the impact force of the high-pressure descaling water and achieving impact resistance and erosion resistance. Multiple damping connectors 4 buffer, eliminating the vibration transmission of the bottom plate 2 to the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill, further reducing the impact force of the high-pressure descaling water and achieving impact resistance and erosion resistance. It can efficiently and protect the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill from high-pressure water impact and corrosion for a long time.

[0030] In this embodiment, the connecting member is sequentially inserted through the connecting plate 1-1, the bottom plate 2, the vibration stopper 3 and the damping connecting member 4 to achieve the connection of the connecting plate 1-1, the bottom plate 2, the vibration stopper 3 and the damping connecting member 4. Among them, the connecting member bolts and nuts, the bolts are sequentially inserted through the connecting plate 1-1, the bottom plate 2, the vibration stopper 3 and the damping connecting member 4 and the nuts are connected. In this embodiment, the bolts are grade 8.8, model M20*60 stainless steel coarse thread bolts, and the nuts are anti-loosening nuts to ensure that the bolts remain tightened when subjected to impact vibration.

[0031] In this embodiment, the materials of the connecting plate 1-1, the multiple first bars 1-2 and the multiple second bars 1-3 are all stainless steel, which is corrosion-resistant, strong, and resistant to impact stress, erosion and peeling, and high-temperature water corrosion, ensuring service life.

[0032] In this embodiment, the base plate 2 is made of stainless steel, which is corrosion-resistant and has high strength, thereby ensuring the life of the base plate 2.

[0033] In this embodiment, the vibration-stopping member 3 is a vibration-stopping rubber pad, and the material is high-elasticity, high-temperature-resistant rubber.

[0034] See also Figure 3-4 Specifically, the cross-sectional shape of the first grid bar 1-2 and the second grid bar 1-3 is a triangle, that is, the first grid bar 1-2 and the second grid bar 1-3 are toothed grid bars, so that the first grid bar 1-2 and the second grid bar 1-3 are impact-resistant and wear-resistant, ensuring the service life of the first grid bar 1-2 and the second grid bar 1-3, and the sharp corners of the first grid bar 1-2 and the second grid bar 1-3 are away from the connecting plate 1-1 to ensure the diversion effect. In other words, the outer profile of the first grid bar 1-2 and the second grid bar 1-3 is similar to the involute tooth profile, which can disperse the front impact of the high-pressure descaling water into a double-sided impact.

[0035] Specifically, a plurality of first grid bars 1 - 2 are evenly spaced apart in the transverse direction of the connection plate 1 - 1 and arranged on the end surface of the connection plate 1 - 1 facing away from the bottom plate 2 to ensure the flow diversion effect.

[0036] A plurality of second grid bars 1-3 are evenly spaced along the longitudinal direction of the connecting plate 1-1 and arranged between two adjacent first grid bars 1-2 to ensure the flow diversion effect.

[0037] Specifically, a first through hole 1-21 is transversely opened inside the first grid bar 1-2, and the first through hole 1-21 is a straight damping hole. In this embodiment, a cylindrical straight damping hole is cast inside the first grid bar 1-2 along the tooth top line direction to form the first through hole 1-21.

[0038] On the end face of the first grid bar 1-2 facing the second grid bar 1-3, a plurality of communication holes 1-22 are longitudinally formed. The plurality of communication holes are all communicated with the first through hole 1-21, and the communication holes 1-22 are variable-diameter damping holes. In this embodiment, variable-diameter fluid damping holes are cast perpendicular to the tooth top line direction at the tooth root of the first grid bar 1-2 to form the communication holes 1-22, which can absorb the impact of water flow. The cross-sectional shape of the variable-diameter fluid damping hole along the hole axis is a double-port trumpet shape, and the central axis of the cylindrical straight-through damping hole intersects with the central axis of the variable-diameter fluid damping hole, and all the variable-diameter fluid damping holes are communicated one by one.

[0039] Specifically, a plurality of second through holes 1-31 are longitudinally formed on the second grid bar 1-3. The second through holes 1-31 are variable-diameter damping holes. In this embodiment, variable-diameter fluid damping holes are cast perpendicular to the tooth top line direction at the tooth root of the second grid bar 1-3 to form the second through holes 1-31, and the cross-sectional shape of the variable-diameter fluid damping hole along the hole axis is a double-port trumpet shape, which can absorb the impact of water flow.

[0040] Among them, when performing high-pressure water descaling, the high-pressure descaling water first impacts on the plurality of first grid bars 1-2, the plurality of second grid bars 1-3 and the connecting plate 1-1. The high-pressure descaling water is shunted by the plurality of first grid bars 1-2 and the plurality of second grid bars 1-3, and the frontal impact of the high-pressure descaling water is dispersed into bilateral impacts, reducing the impact force of the high-pressure descaling water, resisting impact stress, erosion spalling and high-temperature water corrosion, and realizing impact resistance and erosion resistance. At the same time, the high-pressure descaling water enters the second through holes 1-31 of the second grid bar 1-3. The second through holes 1-31 are variable-diameter damping holes, which can absorb the water flow impact of the high-pressure descaling water. The high-pressure descaling water enters the communication holes 1-22 of the first grid bar 1-2. The communication holes 1-22 are variable-diameter damping holes, which can absorb the water flow impact of the high-pressure descaling water. Then, the high-pressure descaling water is discharged through the first through hole 1-21.

[0041] Specifically, a high-temperature corrosion-resistant coating 5 is coated on the outer surfaces of the first grid bar 1-2 and the second grid bar 1-3 to ensure that the first grid bar 1-2 and the second grid bar 1-3 are erosion-resistant and corrosion-resistant. In this embodiment, the high-temperature corrosion-resistant coating 5 can be a zirconia ceramic coating, and the outer surfaces of the first grid bar 1-2 and the second grid bar 1-3 are cladded and sprayed, so that a layer of zirconia ceramic with high temperature resistance and corrosion resistance adheres to form a high-temperature and corrosion-resistant protective layer on the first grid bar 1-2 and the second grid bar 1-3. During specific implementation, the surfaces of the first grid bar 1-2 and the second grid bar 1-3 need to be pretreated with air plasma to change their surface quality and surface chemical properties, increase hydrophilicity, and make the zirconia coating adhere more firmly.

[0042] Specifically, an installation groove is formed on the end face of the bottom plate 2 facing away from the damping connection member 4, and the vibration damping member 3 is embedded in the installation groove. The installation groove protects the vibration damping member 3 to prevent it from being directly impacted by the high-pressure descaling water, ensuring the service life of the vibration damping member 3.

[0043] The thickness of the vibration damping member 3 is greater than the depth of the installation groove, leaving a sufficient margin for the vibration damping member 3 to absorb vibration and contract. In this embodiment, there is a gap between the edge of the vibration damping member 3 and the side wall of the installation groove, facilitating the expansion of the vibration damping member 3 when it is impacted.

[0044] Specifically, the surface of the vibration damping member 3 is coated with a high-temperature resistant anaerobic sealant, so that the vibration damping member 3 fits tightly with the bottom plate 2 and the connecting plate 1-1, ensuring reliable connection. At the same time, it prevents water from entering between the vibration damping member 3 and the bottom plate 2 and between the vibration damping member 3 and the connecting plate 1-1, ensuring the service life of the bottom plate 2 and the connecting plate 1-1.

[0045] See Figure 5 , the damping connection member 4 includes: a connection frame 4-1 and an elastic member 4-2.

[0046] The connection frame 4-1 is connected to the end face of the bottom plate 2 facing away from the grid-shaped flow dividing member 1.

[0047] The elastic member 4-2 is provided on the end face of the connection frame 4-1 facing away from the bottom plate 2. In this embodiment, the elastic member 4-2 can be a reed.

[0048] Specifically, the connection frame 4-1 includes: a support plate 4-11, two bosses 4-12 and two pressing plates 4-13.

[0049] The two bosses 4-12 are relatively arranged on the end face of the support plate 4-11 facing away from the bottom plate 2.

[0050] A groove is formed on the end face of the boss 4-12 facing away from the support plate 4-11, and the pressing plate 4-13 is arranged on the groove.

[0051] The end of the elastic member 4-2 is arranged in the groove and is connected to the boss 4-12 and the pressing plate 4-13. In this embodiment, the width of the elastic member 4-2 matches the width of the groove, and the thickness of the elastic member 4-2 matches the depth of the groove.

[0052] Among them, two bosses 4-12 are supported by a support plate 4-11, and two ends of an elastic member 4-2 are respectively installed in grooves of the two bosses 4-12. Then, a pressure plate 4-13 is installed above the grooves, and the elastic member 4-2, the bosses 4-12 and the pressure plate 4-13 are connected together by bolts to ensure reliable connection. A connection hole is formed in the elastic member 4-2, and the bolt can pass through the connection hole to be connected with a water collecting cover of a high-pressure water descaling machine or a frame of a rolling mill. The vibration transmission from the bottom plate 2 to the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill is eliminated through the elastic member 4-2, and the impact force of the high-pressure descaling water is further reduced, so as to achieve impact resistance and erosion resistance, and the water collecting cover of the high-pressure water descaling machine or the frame of the rolling mill can be efficiently and long-time protected from the impact and corrosion of high-pressure water flow.

[0053] Based on the same inventive concept, the present application also provides a high-pressure water descaling machine which adopts the water retaining lining plate. The specific structure of the water retaining lining plate refers to the above embodiments. Since the water retaining lining plate adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated herein one by one.

[0054] Specifically, a plurality of damping connectors 4 of the water retaining lining plate are connected with a water collecting cover of a high-pressure water descaling machine or a frame of a rolling mill.

[0055] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A water retaining lining, It is characterized in that include: A grid-type flow divider, a bottom plate, a vibration stopper and a plurality of damping connecting parts; The bottom plate is connected to the grid-type flow divider and a plurality of the damping connecting members; The vibration-stopping member is arranged between the bottom plate and the grid-type flow-dividing member; The grid-type flow divider comprises: a connecting plate, a plurality of first grid bars and a plurality of second grid bars; The connecting plate is connected to the end surface of the bottom plate facing away from the damping connecting member; A plurality of the first grid bars are arranged at intervals in a transverse direction on the end surface of the connecting plate facing away from the bottom plate; A plurality of the second grid bars are arranged on the end surface of the connecting plate facing away from the bottom plate, and are arranged between two adjacent first grid bars at intervals in the longitudinal direction; A first through hole is opened in the transverse direction along the inner side of the first grid bar, and the first through hole is a straight damping hole; A plurality of communication holes are provided on the end surface of the first grid bar facing the second grid bar in the longitudinal direction, and the plurality of communication holes are all connected to the first through hole, and the communication holes are variable diameter damping holes; A plurality of second through holes are longitudinally formed on the second grid bar, and the second through holes are variable diameter damping holes; The cross-sectional shapes of the first grid bars and the second grid bars are triangular.

2. The water retaining lining according to claim 1, Features: The outer surfaces of the first grid bars and the second grid bars are coated with a high temperature corrosion resistant coating.

3. The water retaining lining according to claim 1, Features: An installation groove is provided on the end surface of the bottom plate away from the damping connecting member, the vibration-stopping member is embedded in the installation groove, and the thickness of the vibration-stopping member is greater than the depth of the installation groove.

4. The water retaining lining according to claim 1, Features: The surface of the vibration-stopping member is coated with high-temperature resistant anaerobic sealant.

5. The water retaining lining according to claim 1, It is characterized in that The damping connecting member comprises: a connecting frame and an elastic member; The connecting frame is connected to the end surface of the bottom plate facing away from the grid-type flow divider; The elastic member is arranged on the end surface of the connecting frame away from the bottom plate.

6. The water retaining lining according to claim 5, It is characterized in that The connecting frame comprises: a supporting plate, two bosses and two pressing plates; The two bosses are arranged opposite to each other on the end surface of the support plate facing away from the bottom plate; A groove is formed on the end surface of the boss away from the support plate, and the pressing plate is arranged on the groove; The end of the elastic member is arranged in the groove and connected to the boss and the pressing plate.

7. A high pressure water descaling machine, It is characterized in that It comprises a water retaining lining as described in any one of claims 1 to 6.

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