Wear-resistant sink roll

Abstract

The utility model discloses a wear-resistant sink roll which comprises a roll shaft, the outer side of the roll shaft is connected with a roller through two symmetrically-arranged connecting shaft sleeves, the connecting shaft sleeves are fixedly connected to the roll shaft in a sleeved mode, the connecting shaft sleeves are connected with the inner wall of the roller through threads, and an air passing channel is formed in the roll shaft. Two through holes communicated with the air passing channel and the inner cavity of the roller are formed in the part, located in the inner cavity of the roller, of the roller shaft, and a first one-way valve and a second one-way valve which are opposite in direction are installed in the two through holes respectively. The sink roll is of a split structure, so that a cavity is formed in the sink roll, cooling media are conveyed into the cavity through the air passing channel to control the temperature of the sink roll, the surface temperature of the sink roll can be prevented from being too high, molten zinc is prevented from being excessively solidified or scaling on the roll surface, and therefore the galvanizing quality of a steel strip is improved; and a coating on the surface of the sink roll is more durable, and the service life of the sink roll is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a submerged roll technical field, concretely relates to a wear -resisting type submerged roll. BACKGROUND

[0002] The submerged roll is a kind of component playing a key role in the metal surface treatment equipment such as continuous hot galvanizing production line.

[0003] The submerged roll is located in zinc pot, in the hot galvanizing process, steel belt will pass through zinc pot, and the submerged roll is immersed in zinc liquid, and steel belt will bypass the submerged roll.Its working environment is very bad, to withstand high temperature zinc liquid (zinc liquid temperature is usually at 450-460 ℃ around) erosion and scouring for a long time, leading to the coating on the surface of submerged roll easy to wear, in turn lead to the normal use of submerged roll, so that the galvanizing layer on the surface of steel belt is uneven. CONTENT

[0004] The utility model aims at providing a wear -resisting type submerged roll to solve the above insufficient in prior art.

[0005] In order to realize the above purpose, the utility model provides the following technical scheme: a wear -resisting type submerged roll, it includes: roll shaft, the roll shaft outside is connected with the roll cylinder through the two symmetrical arrangement's connecting shaft sleeve, the connecting shaft sleeve is fixedly sleeved on the roll shaft, the connecting shaft sleeve is connected with the roll cylinder inner wall by screw thread, the roll cylinder outside is provided with high temperature resistant layer, the high temperature resistant layer outside is provided with corrosion -resistant layer, the roll shaft is internally provided with the air passage, the part of roll shaft in roll cylinder inner chamber is provided with two through holes connecting the air passage with roll cylinder inner chamber, and the two through holes are respectively installed with the first check valve and the second check valve towards opposite.

[0006] Further, the connecting shaft sleeve and the roll cylinder are provided with sealing rings.

[0007] Further, the high temperature resistant layer is phosphorized silicon layer.

[0008] Further, the corrosion -resistant layer is ternary boride ceramic composite powder layer.

[0009] In the above technical scheme, the wear -resisting type submerged roll provided by the utility model has the beneficial effects of:

[0010] 1, the utility model discloses a submerged roll is set to the split type structure, makes the cavity appear in the submerged roll, utilizes the air passage to transport cooling medium to the cavity, to control the temperature of submerged roll, can prevent the surface temperature of submerged roll from being too high, avoids the excessive solidification or scale of zinc liquid on roll face, to improve the galvanizing quality of steel belt, and make the coating on the surface of submerged roll more durable, prolongs the service life of submerged roll.

[0011] 2. The submerged roller is arranged in a split structure, so that the submerged roller is easy to install and disassemble, and the load of the driving device is reduced.

[0012] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the disclosure.

[0013] This application file provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be all inclusive or all-encompassing. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0015] Figure 1 The structural schematic diagram provided by the embodiments of the present application.

[0016] Explanation of reference signs:

[0017] 1. Roll shaft; 11. Air passage; 12. First one-way valve; 13. Second one-way valve; 14. Through hole; 2. Connecting shaft sleeve; 3. Roller; 4. High temperature resistant layer; 5. Corrosion resistant layer; 6. Sealing ring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present disclosure.

[0019] Please refer to Figure 1 A wear-resistant submerged roller, comprising: a roller shaft 1, the outer side of the roller shaft 1 is connected with a roller 3 through two symmetrically arranged connecting shaft sleeves 2, the connecting shaft sleeves 2 are fixedly sleeved on the roller shaft 1, the connecting shaft sleeves 2 and the inner wall of the roller 3 are connected through threads, the outer side of the roller 3 is provided with a high temperature resistant layer 4, the outer side of the high temperature resistant layer 4 is provided with a corrosion resistant layer 5, the roller shaft 1 is provided with an air passage 11, the part of the roller shaft 1 located in the inner cavity of the roller 3 is provided with two through holes 14 connecting the air passage 11 and the inner cavity of the roller 3, and the two through holes 14 are respectively provided with first one-way valves 12 and second one-way valves 13 facing opposite directions.

[0020] Specifically, the roll shaft 1, the connecting shaft sleeve 2 and the roller 3 are coaxially arranged, the air passage 11 is divided into an air inlet section and an air outlet section, the cooling gas is conveyed into the air inlet section of the air passage 11 from the outside, the cooling gas enters the cavity formed by the roll shaft 1, the connecting shaft sleeve 2 and the roller 3 from the first one-way valve 12, and is discharged into the air outlet section of the air passage 11 after taking away the heat conducted by the roller 3, so that the temperature of the surface of the submerged roll is controlled; the one-way direction of the first one-way valve 12 is the cavity of the submerged roll facing the air inlet section of the air passage 11, and the one-way direction of the second one-way valve 13 is the cavity of the submerged roll facing the air outlet section of the air passage 11.

[0021] The utility model discloses a part structure is set up to the submerged roll, and the cavity is formed in the submerged roll, and the cooling medium is conveyed into the cavity through the air passage 11, so that the temperature of the submerged roll is controlled, the surface temperature of the submerged roll is prevented from being too high, the excessive solidification or scale of the zinc liquid on the roll surface is avoided, the quality of the steel strip galvanizing is improved, and the coating on the surface of the submerged roll is more durable, and the service life of the submerged roll is prolonged.

[0022] Further, the sealing ring 6 is arranged between the connecting shaft sleeve 2 and the roller 3.

[0023] Specifically, the sealing ring 6 is a rubber sealing ring, which blocks the zinc liquid from the outside into the cavity of the submerged roll, and the sealing ring 6 is replaced when the submerged roll is maintained.

[0024] Further, the high-temperature-resistant layer 4 is a phosphorized silicon layer.

[0025] Specifically, the high-temperature-resistant layer 4 is a phosphorized silicon coating, and the phosphorized silicon is sprayed on the outer surface of the roller 3.

[0026] Further, the corrosion-resistant layer 5 is a ternary boride ceramic composite powder layer.

[0027] Specifically, the ternary boride ceramic composite powder layer is coated on the outer surface of the high-temperature-resistant layer 4 by plasma spraying.

[0028] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled person in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A wear resistant submerged roller comprising: Roll shaft (1), characterized in that: the roll shaft (1) outside is connected with the roller (3) through two symmetrical connecting shaft sleeves (2), the connecting shaft sleeve (2) is fixedly sleeved on the roll shaft (1), the connecting shaft sleeve (2) is connected with the inner wall of the roller (3) through screw thread, the outer side of the roller (3) is provided with a high temperature resistant layer (4), the outer side of the high temperature resistant layer (4) is provided with a corrosion resistant layer (5), the roll shaft (1) is provided with a gas passage (11) in the inside, the part of the roll shaft (1) located in the inner cavity of the roller (3) is provided with two through holes (14) connected with the gas passage (11) and the inner cavity of the roller (3), the two through holes (14) are respectively provided with first and second one-way valves (12) and (13) facing opposite directions.

2. A wear resistant submerged roller according to claim 1, wherein, The connecting shaft sleeve (2) and the roller (3) are provided with a sealing ring (6) therebetween.

3. A wear resistant submerged roller according to claim 1, wherein, The high temperature resistant layer (4) is a phosphorized silicon layer.

4. A wear resistant submerged roller according to claim 1, wherein, The corrosion resistant layer (5) is a ternary boride ceramic composite powder layer.

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