Equipment for removing oxide layer on surface of hot rolled material

Abstract

The utility model relates to the field of steel rolling equipment, in particular to hot-rolled material surface oxide layer removing equipment which comprises a sand blasting box, entrances and exits arranged at the two ends of the sand blasting box, supporting rollers arranged on the outer sides of the entrances and the exits, a discharge valve arranged at the lower end of the sand blasting box, a lifting frame arranged in the sand blasting box, and a fixing ring connected with the lifting frame. A rotating ring is arranged in the fixing ring in a reciprocating rotation mode, four sand blasting guns are arranged on the rotating ring, a sand blasting device is arranged outside the sand blasting box, and the sand blasting device is provided with sand blasting pipes connected with the sand blasting guns. The device has the advantage of thoroughly removing the oxide skin.

Description

Technical Field

[0001] The utility model relates to the field of steel rolling equipment, in particular to equipment for removing oxide layers on the surface of hot-rolled materials. Background Art

[0002] Steel rolling refers to the pressure processing process of changing the shape of steel ingots and billets by rotating rollers. The purpose of steel rolling is the same as other pressure processing. First, it is to obtain the desired shape, and second, it is to change the internal quality of the steel. Hot rolling is divided into hot rolling and cold rolling according to the different rolling temperatures. During the hot rolling process, anti-decarburization coating needs to be sprayed on the surface of the steel billet before hot rolling. However, the surface of the steel billet contains some oxide scale, which needs to be removed. The existing removal method is to use a sandblasting machine for sandblasting, but due to the different shapes of the steel billets, the sandblasting is uneven, there is a sandblasting funnel, and the oxide layer is not completely removed. Therefore, it is particularly necessary to develop a hot-rolled material surface oxide layer removal equipment that can completely remove the oxide scale. Summary of the invention

[0003] The utility model aims to provide a device for removing the oxide layer on the surface of hot-rolled material, which has the advantage of completely removing the oxide layer.

[0004] The technical solutions adopted are as follows:

[0005] A device for removing oxide layers from the surface of hot-rolled materials comprises a sandblasting box, inlet and outlet are arranged at both ends of the sandblasting box, support rollers are arranged outside the inlet and outlet, a discharge valve is arranged at the lower end of the sandblasting box, a lifting frame is arranged inside the sandblasting box, the lifting frame is connected to a fixed ring, a rotating ring is arranged inside the fixed ring for reciprocating rotation, four sandblasting guns are arranged on the rotating ring, a sandblasting device is arranged outside the sandblasting box, and the sandblasting device is provided with sandblasting tubes connected to each sandblasting gun.

[0006] Preferably, a mounting ring is provided inside the sandblasting box, the mounting ring is connected to the fixed ring by a connecting rod, the mounting ring and the fixed ring are coaxially arranged, a plurality of high-pressure nozzles are evenly installed on the mounting ring, a high-pressure air pump is provided outside the sandblasting box, and the high-pressure air pump is provided with an air supply pipe connected to the high-pressure nozzle.

[0007] Preferably, a reciprocating motor is arranged on the fixed ring, the reciprocating motor is connected with a gear, an outer gear ring is coaxially arranged on the rotating ring, and the gear is meshed with the outer gear ring.

[0008] Preferably, the reciprocating motor is arranged at the upper end of the fixing ring.

[0009] Preferably, the lifting frame includes a plurality of vertically extending hydraulic telescopic rods, the upper ends of the hydraulic telescopic rods are fixedly connected to the fixing rings, the upper ends of the hydraulic telescopic rods are connected to outer protective cylinders covered on the outside of the hydraulic telescopic rods, and the lower ends of the hydraulic telescopic rods are provided with inner protective cylinders inserted into the outer protective cylinders.

[0010] Preferably, the inner walls of the sandblasting box are provided with sound insulation cotton.

[0011] Compared with the prior art, the beneficial effects are:

[0012] 1. The utility model utilizes a plurality of sandblasting guns installed on a reciprocating rotating ring, thereby achieving complete coverage of the interior of the rotating ring by the sandblasting guns, thereby performing all-round sandblasting treatment on the steel billet inside the rotating ring and thoroughly removing the oxide scale on the surface of the steel billet.

[0013] 2. The high-pressure air pump and the high-pressure nozzle of the utility model perform high-pressure spraying on the steel billet from which the oxide scale is removed, and blow off the sandblasting particles remaining on the surface of the steel billet.

[0014] 3. The outer protective tube and the inner protective tube outside the hydraulic telescopic rod of the utility model play a protective role on the hydraulic telescopic rod, preventing the hydraulic telescopic rod from being damaged by the sandblasting gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the side cross-sectional structure of a device for removing oxide layer on the surface of hot-rolled material according to the utility model.

[0016] Figure 2 yes Figure 1 The structural diagram at A in the middle,

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of a device for removing oxide layer on the surface of hot-rolled material according to the utility model.

[0018] In the figure: 1. sandblasting box, 2. inlet and outlet, 3. support roller, 4. discharge valve, 5. fixed ring, 6. hydraulic telescopic rod, 7. outer protective cylinder, 8. inner protective cylinder, 9. rotating ring, 10. sandblasting gun, 11. sandblasting device, 12. sandblasting tube, 13. reciprocating motor, 14. gear, 15. outer gear ring, 16. mounting ring, 17. air supply pipe, 18. high-pressure air pump, 19. connecting rod. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments. Figures 1 to 3 As shown:

[0020] Embodiment 1: A device for removing oxide layer from the surface of hot-rolled material, comprising a sandblasting box 1, wherein both ends of the sandblasting box 1 are provided with inlets and outlets 2, and support rollers 3 are provided outside the inlets and outlets 2. A discharge valve 4 is provided at the lower end of the sandblasting box 1, and the discharge valve 4 is used to discharge particles sprayed by sandblasting. A lifting frame is provided in the sandblasting box 1, and the lifting frame is connected to a fixed ring 5, and the lifting frame controls the lifting and lowering of the fixed ring 5. A rotating ring 9 is provided in the fixed ring 5 for reciprocating rotation, and four sandblasting guns 10 are provided on the rotating ring 9, and the openings of the sandblasting guns 10 are all facing the center of the rotating ring 9.

[0021] A sandblasting device 11 is provided outside the sandblasting box 1. The sandblasting device 11 is provided with a sandblasting tube 12 connected to each sandblasting gun 10. When sandblasting is performed, the support roller 3 is used to support the steel billet to enter the sandblasting box 1, and the rotating ring 9 is controlled to reciprocate to achieve complete coverage of the inside of the rotating ring 9 by the sandblasting gun 10, thereby performing a full range of sandblasting treatment on the steel billet inside the rotating ring 9 and thoroughly removing the oxide scale on the surface of the steel billet;

[0022] Embodiment 2: A device for removing oxide layer from the surface of hot-rolled material comprises a sandblasting box 1, wherein both ends of the sandblasting box 1 are provided with inlets and outlets 2, and support rollers 3 are provided outside the inlets and outlets 2. A discharge valve 4 is provided at the lower end of the sandblasting box 1, and the discharge valve 4 is used to discharge particles sprayed by sandblasting. A lifting frame is provided in the sandblasting box 1, and the lifting frame is connected to a fixing ring 5, and the lifting frame controls the lifting and lowering of the fixing ring 5.

[0023] The lifting frame includes a plurality of hydraulic telescopic rods 6 extending vertically, the upper ends of the hydraulic telescopic rods 6 are fixedly connected to the fixing rings 5, the upper ends of the hydraulic telescopic rods 6 are connected to outer protective tubes 7 which are arranged outside the hydraulic telescopic rods 6, and the lower ends of the hydraulic telescopic rods 6 are provided with inner protective tubes 8 which are inserted into the inner parts of the outer protective tubes 7. The outer protective tubes 7 and the inner protective tubes 8 play a protective role on the hydraulic telescopic rods 6 to prevent the hydraulic telescopic rods 6 from being damaged by the sandblasting gun 10.

[0024] A rotating ring 9 is reciprocatingly arranged in the fixed ring 5, and four sandblasting guns 10 are arranged on the rotating ring 9. The openings of the sandblasting guns 10 are all facing the center of the rotating ring 9. A sandblasting device 11 is arranged outside the sandblasting box 1. The sandblasting device 11 is provided with a sandblasting tube 12 connected to each sandblasting gun 10. A reciprocating motor 13 is arranged on the upper end of the fixed ring 5. The reciprocating motor 13 is connected to a gear 14. An outer gear ring 15 is coaxially arranged on the rotating ring 9, and the gear 14 is meshed with the outer gear ring 15.

[0025] A mounting ring 16 is provided in the sandblasting box 1. The mounting ring 16 is connected to the fixing ring 5 by a connecting rod 19. The mounting ring 16 and the fixing ring 5 are coaxially arranged. A plurality of high-pressure nozzles 17 are evenly installed on the mounting ring 16. A high-pressure air pump 18 is provided outside the sandblasting box 1. The high-pressure air pump 18 is provided with an air supply pipe 17 connected to the high-pressure nozzle 17. The high-pressure air pump 18 and the high-pressure nozzle 17 perform high-pressure spraying on the steel billet to remove the oxide scale, and blow off the sandblasting particles remaining on the surface of the steel billet. The inner wall of the sandblasting box 1 is provided with sound insulation cotton, which reduces the noise generated by sandblasting.

[0026] The specific working process is as follows: when sandblasting, the support roller 3 is used to support the steel billet to enter the sandblasting box 1, and the reciprocating motor 13 controls the rotating ring 9 to rotate reciprocatingly, so that the sandblasting gun 10 completely covers the inside of the rotating ring 9, thereby performing all-round sandblasting treatment on the steel billet inside the rotating ring 9, and thoroughly removing the oxide scale on the surface of the steel billet. After the sandblasting is completed, the high-pressure nozzle 17 is used to spray the steel billet to blow off the sandblasting particles remaining on the surface of the steel billet.

[0027] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A device for removing oxide layer from the surface of hot rolled material, characterized in that: It includes a sandblasting box, which has inlets and outlets at both ends, support rollers are arranged outside the inlets and outlets, a discharge valve is arranged at the lower end of the sandblasting box, a lifting frame is arranged inside the sandblasting box, the lifting frame is connected with a fixed ring, a rotating ring is arranged inside the fixed ring for reciprocating rotation, four sandblasting guns are arranged on the rotating ring, a sandblasting device is arranged outside the sandblasting box, and the sandblasting device is provided with sandblasting tubes connected with each sandblasting gun.

2. The device for removing oxide layer from the surface of hot rolled material according to claim 1, characterized in that: The sandblasting box is provided with a mounting ring, which is connected to the fixing ring by a connecting rod, the mounting ring and the fixing ring are coaxially arranged, and a plurality of high-pressure nozzles are evenly installed on the mounting ring. A high-pressure air pump is provided outside the sandblasting box, and the high-pressure air pump is provided with an air supply pipe connected to the high-pressure nozzle.

3. The device for removing oxide layer from the surface of hot rolled material according to claim 1, characterized in that: The fixed ring is provided with a reciprocating motor, the reciprocating motor is connected with a gear, the rotating ring is coaxially provided with an outer gear ring, and the gear is meshed with the outer gear ring.

4. The device for removing oxide layer from the surface of hot rolled material according to claim 3, characterized in that: The reciprocating motor is arranged on the upper end of the fixing ring.

5. The device for removing oxide layer from the surface of hot rolled material according to claim 1, characterized in that: The lifting frame includes multiple vertically extending hydraulic telescopic rods, the upper ends of the hydraulic telescopic rods are fixedly connected to the fixing rings, the upper ends of the hydraulic telescopic rods are connected to outer protective tubes covered on the outside of the hydraulic telescopic rods, and the lower ends of the hydraulic telescopic rods are provided with inner protective tubes inserted into the outer protective tubes.

6. The device for removing oxide layer from the surface of hot rolled material according to claim 1, characterized in that: The inner walls of the sandblasting box are all provided with sound insulation cotton.

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