A duster

Abstract

The application relates to a powder spraying device in a steelmaking process, in particular to a powder spraying vehicle, which comprises a vehicle body capable of freely moving on the ground, a powder tank arranged on the vehicle body and connected to a powder spraying device at the top, a discharge pipe with a feeding end connected to a discharge end of the powder tank, a spraying pipe with a feeding end connected to a discharge end of the discharge pipe, and an angle adjusting mechanism for adjusting the angle of the discharge end of the spraying pipe. The powder tank is moved by the vehicle body, the powder spraying device presses the powder tank, powder in the powder tank is sprayed out of the discharge end of the spraying pipe through the discharge pipe, and the angle of the discharge end of the spraying pipe is adjusted by the angle adjusting mechanism, so that the discharge end of the spraying pipe can spray powder to any position in a steelmaking tank, the powder is uniformly sprayed into the smelted steel, and the quality of the smelted steel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a powder spraying device in a steelmaking process, in particular to a powder spraying vehicle. BACKGROUND

[0002] In the process of smelting steel, various trace metals need to be added to the steel. Since the temperature is high during the smelting process, mechanical devices are currently used to add various trace metal powders or particles, referred to as powder spraying, to the steelmaking ladle.

[0003] However, when the powder spraying device currently in use sprays powder into the steelmaking ladle, the structure of the powder spraying device is fixed, making it impossible to freely adjust the powder spraying angle towards the steelmaking ladle. This easily leads to uneven powder injection into the steel, thereby affecting the quality of the smelted steel. SUMMARY

[0004] In order to improve the smelting quality of steel, the present application provides a powder spraying vehicle. The vehicle body carries a powder spraying tank for movement, the powder spraying device applies pressure to the powder spraying tank, the powder in the powder spraying tank is sprayed out from the discharge end of the powder spraying pipe through the discharge pipe, and the angle of the discharge end of the powder spraying pipe is adjusted by the angle adjusting mechanism. The discharge end of the powder spraying pipe can spray powder to any position in the steelmaking ladle, the powder is uniformly sprayed into the smelted steel, and the quality of the smelted steel is improved.

[0005] The powder spraying vehicle provided by the present application adopts the following technical solutions:

[0006] A powder spraying vehicle, comprising:

[0007] A vehicle body that can freely move on the ground;

[0008] A discharge pipe, the inlet end of which is connected to the discharge end of the powder spraying tank;

[0009] A powder spraying pipe, the inlet end of which is connected to the discharge end of the discharge pipe; and

[0010] An angle adjusting mechanism for adjusting the angle of the powder spraying pipe.

[0011] Preferably, the powder spraying pipe is connected to the discharge pipe through a connecting pipe, and the connecting pipe is a flexible pipe.

[0012] Preferably, the angle adjusting mechanism comprises a base, a first hinged rod, a second hinged rod, a rotating seat, and an extension piece.

[0013] The base is fixed on the discharge pipe, two ends of the first articulated rod are respectively articulated with one end of the base close to the discharge pipe and one end of the rotating seat close to the spray pipe, two ends of the second articulated rod are respectively articulated with one end of the base away from the discharge pipe and one end of the rotating seat away from the spray pipe, the cylinder body of the telescopic member and the telescopic rod are respectively articulated with the middle part of the base and the first articulated rod, and the articulated end of the telescopic member and the base is located between the discharge pipe and the first articulated rod.

[0014] Preferably, the base comprises a base body and a connecting rod fixed on the base body, the base body is fixed with the discharge pipe, the connecting rod is located on the end of the base body away from the discharge pipe, the first articulated rod is articulated with the base body and the articulated end is located between the connecting rod and the discharge pipe, and the second articulated rod is articulated with the end of the connecting rod away from the base body.

[0015] Preferably, the telescopic member can adopt a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0016] Preferably, a first waist-shaped hole is formed on the first articulated rod, and the first articulated rod is articulated with the rotating seat through the first waist-shaped hole.

[0017] A second waist-shaped hole is formed on the second articulated rod, and the second articulated rod is articulated with the rotating seat through the second waist-shaped hole.

[0018] Preferably, a mounting rack for fixing a powder spraying tank is arranged on the vehicle body, the mounting rack is slidingly connected with the vehicle body, and the mounting rack can be raised and lowered on the vehicle body.

[0019] Preferably, a channel steel arranged on the vehicle body is fixed at the bottom of the discharge pipe, and the angle adjusting mechanism is fixed on the channel steel.

[0020] A third waist-shaped hole is arranged at the bottom of the channel steel, a supporting seat is arranged on the vehicle body, a supporting rod is arranged at the top of the supporting seat, and the supporting rod is arranged in the third waist-shaped hole.

[0021] Preferably, a mounting pipe is arranged on the vehicle body, a plurality of bolt holes are formed on the mounting pipe, the supporting seat is connected with the mounting pipe through bolts, and the bolts can be arranged in different bolt holes to adjust the height of the supporting rod at the top of the supporting seat.

[0022] Preferably, the powder spraying vehicle is used for spraying powder into a steelmaking tank in a steelmaking process.

[0023] In summary, the present application has the following beneficial technical effects:

[0024] 1. The powder spraying vehicle can drive the powder spraying tank to move freely, facilitating the spraying of different steel smelting tanks, and when the powder in the powder spraying tank is used up, other powder spraying vehicles can continue to spray, and the powder spraying vehicle that has run out of powder can be refilled at other locations, so that the powder spraying vehicle does not occupy the working position in front of the smelting tank and does not affect the smelting of steel.

[0025] 2. The spraying pipeline of the powder spraying vehicle is the shortest and straightest, the flow rate and spraying speed and flow of the powder are controllable, the spraying operation cycle is short, and accurate spraying can be realized at different positions in the smelting tank.

[0026] 3. The powder spraying vehicle is mainly applied to the smelting process of steel, and can also be applied to other processes that can spray or inject materials.

[0027] 4. The angle between the material spraying pipe and the discharge pipe of the powder spraying vehicle is accurately controllable, and when the powder spraying vehicle is not in use, the material spraying pipe can be supported on the vehicle body, reducing the occupied space of the powder spraying vehicle.

[0028] 5. The height of the powder spraying tank of the powder spraying vehicle is adjustable, facilitating the spraying of the material in the powder spraying tank, and increasing the utilization rate of the material in the material spraying pipe.

[0029] 6. The first and second hinge rods are provided with waist-shaped holes, which provide a tension for the rotation of the rotating seat, reduce the extrusion of the connecting pipe during the rotation of the rotating seat, and reduce the bending damage of the connecting pipe during the change of curvature.

[0030] 7. The support rod limits and fixes the channel steel and the discharge pipe, avoiding the left and right movement of the channel steel and the discharge pipe on the vehicle body.

[0031] 8. The height of the discharge pipe and the angle adjusting mechanism is adjustable, facilitating the spraying of the powder spraying vehicle in smelting tanks of different heights. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the overall structure schematic diagram of the powder spraying vehicle in the embodiment of the application.

[0033] Figure 2 is Figure 1 the front view.

[0034] Figure 3 is the structure schematic diagram of the angle adjusting mechanism in the embodiment of the application.

[0035] Figure 4 is the use state diagram of the powder spraying vehicle in the embodiment of the application.

[0036] Figure 5 is Figure 4 the enlarged structure schematic diagram of part A.

[0037] Explanation of reference signs: 100, smelting pot; 1, vehicle body; 2, powder spraying pot; 3, discharge pipe; 31, channel steel; 311, third waist-shaped hole; 4, material spraying pipe; 41, material spraying head; 51, base; 511, base body; 512, connecting rod; 52, first hinged rod; 521, first waist-shaped hole; 53, second hinged rod; 531, second waist-shaped hole; 54, rotating seat; 55, telescopic piece; 6, connecting pipe; 71, support seat; 72, support rod; 73, mounting pipe; 731, bolt hole. DETAILED DESCRIPTION

[0038] The application will be further described in detail below with reference to the accompanying drawings.

[0039] The embodiment of the application discloses a powder spraying vehicle which is applied to the process of smelting steel and is used for spraying powder into a smelting pot, so that the powder can be uniformly sprayed into smelted steel, and the powder can be fully mixed with the smelted steel, thereby improving the quality of the smelted steel. The powder contains various trace metals, and also contains some granular substances, such as slag-making powder, furnace lining repairing material and rare earth trace element additive.

[0040] Reference Figures 1 to 3 The powder spraying vehicle comprises a vehicle body 1, a powder spraying pot 2, a discharge pipe 3, a material spraying pipe 4 and an angle adjusting mechanism.

[0041] Reference Figure 1 The vehicle body 1 is provided with an operation system, and an operator can realize free steering and movement of the vehicle body 1 in a workshop by operating the operation system.

[0042] Reference Figure 1 The vehicle body 1 is provided with a mounting frame which is vertically and slidingly connected to the vehicle body 1, and the vehicle body 1 is also provided with a lifting device of the mounting frame, the lifting device drives the mounting frame to freely lift on the vehicle body 1, and the lifting device comprises but is not limited to a hydraulic lifting device and a screw rod lifting device. A mounting seat is slidingly connected to the mounting frame in the horizontal direction, and a hydraulic cylinder is mounted on the mounting frame, the hydraulic cylinder drives the mounting seat to move left and right on the mounting frame.

[0043] Reference Figure 1 and Figure 2 The powder spraying pot 2 is mounted and fixed on the mounting seat, the top of the powder spraying pot 2 is an inlet end, and a cover plate is mounted on the top end of the powder spraying pot 2, the cover plate seals the inlet end of the powder spraying pot 2, so that the powder in the powder spraying pot 2 is prevented from spilling out during the upward and downward movement or the left and right movement of the mounting seat. The bottom side end of the powder spraying pot 2 is a discharge end. In order to facilitate the discharge of the powder in the powder spraying pot 2, the lifting device drives the powder spraying pot 2 to rise, so that the discharge end of the powder spraying pot 2 is raised.

[0044] Reference Figure 2 and Figure 3The outlet pipe 3 is a steel pipe, and the feeding end of the outlet pipe 3 is connected with the outlet end of the powder spraying tank 2. Preferably, in view of the possible angle change between the outlet end of the powder spraying tank 2 and the outlet pipe 3 during the lifting of the powder spraying tank 2, the feeding end of the outlet pipe 3 is connected with the outlet end of the powder spraying tank 2 through a hose, wherein the hose can be a rubber hard hose or a bellows, so as to avoid the blockage of the hose due to extrusion.

[0045] Preferably, referring to Figure 2 and Figure 3 , the bottom of the outlet pipe 3 is fixed with a channel steel 31, and the bottom of the channel steel 31 is supported on the vehicle body 1. Preferably, when the powder spraying tank 2 is lifted, the outlet pipe 3 is also lifted. In order to prevent the hose from being damaged during the lifting of the outlet pipe 3, the bottom of the channel steel 31 or the bottom of the outlet pipe 3 can be hinged to the mounting frame, so that the lifting device can synchronously lift the outlet pipe 3 and the powder spraying tank 2.

[0046] Preferably, referring to Figure 2 and Figure 3 , the feeding end of the material spraying pipe 4 is connected with the outlet end of the outlet pipe 3. Preferably, the feeding end of the material spraying pipe 4 is connected with the outlet end of the outlet pipe 3 through a connecting pipe 6. The outlet pipe 3 can be a rubber hard hose or a bellows, so as to avoid the blockage of the connecting pipe 6.

[0047] Preferably, referring to Figure 2 and Figure 3 , the outlet end of the material spraying pipe 4 is welded with a material spraying head 41. The material spraying head 41 is in the shape of a horn that disperses outward, so that the powder can be dispersed outward as much as possible, and the powder can be uniformly sprayed into the smelted steel. In use, if the material spraying head 41 is damaged, the material spraying head 41 can be directly cut off, and then a new material spraying head 41 is welded to the outlet end of the material spraying pipe 4.

[0048] Preferably, referring to Figure 2 and Figure 3 , the angle adjusting mechanism comprises a base 51, a first hinged rod 52, a second hinged rod 53, a rotating seat 54 and an extension piece 55.

[0049] The base 51 can be fixed on the outlet pipe 3 or the channel steel 31, and the base 51 is located on the side of the outlet pipe 3 away from the material spraying pipe 4. Preferably, the base 51 is fixedly connected with the channel steel 31.

[0050] The rotating seat 54 is fixed on the side of the material spraying pipe 4 away from the material spraying head 41.

[0051] Preferably, referring to Figure 2 and Figure 3, one end of the first articulated rod 52 is articulated to the base 51, the other end of the first articulated rod 52 is articulated to the rotating base 54, and the articulated end of the first articulated rod 52 to the base 51 is located on the base 51 close to one end of the discharge pipe 3, the articulated end of the first articulated rod 52 to the rotating base 54 is located in the middle of the rotating base 54 or close to one end of the rotating base 54 close to the spray pipe 4.

[0052] With reference to Figure 2 and Figure 3 , one end of the second articulated rod 53 is articulated to the base 51, the other end of the second articulated rod 53 is articulated to the rotating base 54, and the articulated end of the second articulated rod 53 to the base 51 is located on the base 51 away from one end of the discharge pipe 3, specifically, the articulated end of the second articulated rod 53 to the base 51 is located on the side of the first articulated rod 52 articulated end to the base 51 away from the discharge pipe 3, that is, the articulated end of the first articulated rod 52 to the base 51 is located between the discharge pipe 3 and the articulated end of the second articulated rod 53 to the base 51. The articulated end of the second articulated rod 53 to the rotating base 54 is located on the rotating base 54 away from one end of the spray pipe 4, specifically, the articulated end of the second articulated rod 53 to the rotating base 54 is located on the side of the first articulated rod 52 articulated end to the rotating base 54 away from the spray pipe 4, that is, the articulated end of the first articulated rod 52 to the rotating base 54 is located between the spray pipe 4 and the articulated end of the second articulated rod 53 to the rotating base 54.

[0053] With reference to Figure 2 and Figure 3 , the length of the second articulated rod 53 is shorter than the length of the first articulated rod 52, preferably, the length of the second articulated rod 53 is half of the length of the first articulated rod 52, in other embodiments, the length of the second articulated rod 53 and the length of the first articulated rod 52 can also adopt other proportions.

[0054] With reference to Figure 2 and Figure 3 , the base 51 comprises a base body 511 and a connecting rod 512, the base body 511 is arranged in parallel with the discharge pipe 3, the connecting rod 512 is fixedly arranged on the upper end of the base body 511, preferably, the connecting rod 512 is fixedly arranged vertically on the base body 511, and the connecting rod 512 is located on the base body 511 away from one end of the discharge pipe 3. Wherein, the first articulated rod 52 is articulated to the base body 511, and the second articulated rod 53 is articulated to the upper half of the connecting rod 512, that is, the end of the connecting rod 512 away from the base body 511 or the top end of the connecting rod 512.

[0055] With reference to Figure 1 and Figure 3The cylinder of the telescopic member 55 is hinged to the base 51, and the telescopic rod of the telescopic member 55 is hinged to the middle part of the first hinged rod 52. In other possible embodiments, the cylinder of the telescopic member 55 can be hinged to the middle part of the first hinged rod 52, and the cylinder of the telescopic member 55 can be hinged to the base 51.

[0056] The telescopic member 55 can be a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. Preferably, the telescopic member 55 can also be a servo hydraulic cylinder or a servo pneumatic cylinder. In the present embodiment, the telescopic member 55 is a hydraulic cylinder. The hydraulic cylinder is connected to the hydraulic pump station on the vehicle body 1 through a pipeline, and the extension and retraction of the hydraulic cylinder is precisely controlled through the hydraulic system.

[0057] Referring to Figure 2 and Figure 3 , when in use, the operator controls the telescopic rod of the telescopic member 55 to extend through the hydraulic system. The telescopic rod drives the first hinged rod 52 to rotate along the hinged end of the first hinged rod 52 and the base body 511. At the same time, the rotating seat 54 rotates along the hinged end of the first hinged rod 52 and the base body 511. Since the rotating seat 54 is also hinged to the connecting rod 512 through the second hinged rod 53, when the rotating seat 54 rotates along the hinged end of the first hinged rod 52 and the base body 511, the second hinged rod 53 limits the end of the rotating seat 54 away from the material spraying pipe 4. At this time, the rotating seat 54 rotates while the angle between the rotating seat 54 and the base body 511 widens, and the angle between the material spraying pipe 4 and the material outlet pipe 3 widens. The material spraying pipe 4 rotates away from the material spraying tank. After the material spraying pipe 4 widens, the operator can move the vehicle body 1 to extend the material spraying pipe 4 into the steel smelting tank 100. The operator can control the angle between the material spraying pipe 4 and the material outlet pipe 3 by controlling the extension length of the telescopic member 55, so that the material outlet head on the material outlet pipe 3 sprays the powder to different positions in the smelting tank 100.

[0058] Further referring to Figure 4 and Figure 5 , the first hinged rod 52 is provided with a first waist-shaped hole 521, which is located at the hinged position between the first hinged rod 52 and the rotating seat 54. The hinged shaft between the first hinged rod 52 and the rotating seat 54 is arranged in the first waist-shaped hole 521. In use, since the connecting pipe 6 is folded and bent, the first waist-shaped hole 521 can provide a tension to the rotating seat 54. During the rotation of the connecting pipe 6, the curvature of the connecting pipe 6 changes, so that the distance between the rotating seat 54 and the base body 511 can adaptively change, thereby minimizing the damage of the bending of the connecting pipe 6.

[0059] Similarly, referring to Figure 1 andFigure 3 The second waist-shaped hole 531 is located at the joint of the second articulated rod 53 and the rotating seat 54, and the joint axis between the second articulated rod 53 and the rotating seat 54 penetrates the second waist-shaped hole 531. In use, the second waist-shaped hole 531 is used in cooperation with the first waist-shaped hole 521 to provide an adaptive tensor for the rotating shaft during rotation, so that the rotating seat 54 avoids excessive extrusion on the connecting pipe 6 during rotation, thereby minimizing the bending damage of the connecting pipe 6 during the change of curvature.

[0060] Further, referring to Figure 1 and Figure 3 In order to fix the discharge pipe 3 and avoid the left and right movement of the discharge pipe 3 during the lifting of the powder spraying tank 2, a support seat 71 is arranged on the vehicle body 1, and a support rod 72 penetrates the top of the support seat 71. The bottom of the channel steel 31 is provided with a third waist-shaped hole 311, and the support rod 72 penetrates the third waist-shaped hole 311, so that the discharge pipe 3 and the channel steel 31 can move and rotate on the vehicle body 1 during the lifting of the powder spraying tank 2. Since the distance between the powder spraying tank 2 and the support rod 72 changes during the lifting of the powder spraying tank 2, the third waist-shaped hole 311 provides a displacement tensor for the discharge pipe 3 and the channel steel 31, so that the discharge pipe 3 and the channel steel 31 can move relative to the support rod 72.

[0061] Further, referring to Figure 1 and Figure 3 Figure 2 Figure 3 In order to facilitate the powder spraying vehicle to spray powder into the smelting tank 100 of different heights, the height of the support rod 72 on the vehicle body 1 can be adjusted, so that a mounting pipe 73 is fixedly installed on the vehicle body 1. The mounting pipe 73 can have a shape including but not limited to a circular shape, a square shape, so that the support seat 71 can be inserted into the mounting pipe 73. The mounting pipe 73 is uniformly provided with a plurality of bolt holes 731 in the axial direction. The support seat 71 can be fixed in different bolt holes 731 of the mounting seat by bolts to adjust the height of the support seat 71 on the vehicle body 1, thereby facilitating the powder spraying vehicle to spray powder into the smelting tank 100 of different heights.

[0062] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A duster characterized by comprising: The application relates to a powder spraying vehicle. The powder spraying vehicle comprises a vehicle body, a powder spraying tank, a discharge pipe, a spraying pipe and an angle adjusting mechanism. The powder spraying tank is arranged on the vehicle body. The discharge pipe is connected with the powder spraying tank. The spraying pipe is connected with the discharge pipe. The angle adjusting mechanism is used for adjusting the angle of the spraying pipe. The spraying pipe is communicated with the discharge pipe through a connecting pipe. The connecting pipe is a flexible pipe. The angle adjusting mechanism comprises a base, a first hinged rod, a second hinged rod, a rotating base and an extension piece. The base is fixed on the discharge pipe. The rotating base is fixed on the spraying pipe far from the discharge end. The two ends of the first hinged rod are hinged with the base near the discharge pipe and the rotating base near the spraying pipe. The two ends of the second hinged rod are hinged with the base far from the discharge pipe and the rotating base far from the spraying pipe. The cylinder body and the extension rod of the extension piece are hinged with the base and the middle part of the first hinged rod. The hinged end of the extension piece and the base is located between the discharge pipe and the first hinged rod. The length of the second hinged rod is shorter than that of the first hinged rod.

2. A duster according to claim 1, wherein, The base comprises a base body and a connecting rod fixed on the base body.

3. A duster according to claim 1, wherein, The base body is parallel to the discharge pipe.

4. A duster according to any one of claims 1 to 3, wherein The connecting rod is located on the base body far from the discharge pipe. The first hinged rod is hinged with the base body and the hinged end is located between the connecting rod and the discharge pipe. The second hinged rod is hinged with the connecting rod far from the base body. A first waist-shaped hole is arranged on the first hinged rod. The first hinged rod is hinged with the rotating base through the first waist-shaped hole. A second waist-shaped hole is arranged on the second hinged rod. The second hinged rod is hinged with the rotating base through the second waist-shaped hole. The bottom of the discharge pipe is fixed with a channel steel arranged on the vehicle body. The angle adjusting mechanism is fixed on the channel steel. The bottom of the channel steel is provided with a third waist-shaped hole. A supporting base is arranged on the vehicle body. A supporting rod is arranged on the top of the supporting base. A mounting pipe is arranged on the vehicle body. A plurality of bolt holes are arranged on the mounting pipe. The supporting base is connected with the mounting pipe through bolts. The bolts can be located in different bolt holes to adjust the height of the supporting rod on the top of the supporting base. The extension piece can be a hydraulic cylinder, a gas cylinder or an electric cylinder. A mounting frame is arranged on the vehicle body for fixing the powder spraying tank. The mounting frame is slidingly connected with the vehicle body. The mounting frame can be lifted on the vehicle body. The powder spraying vehicle is used for spraying powder into a steelmaking tank in a steelmaking process.

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