Device for measuring spreadability of molten iron covering agent

Abstract

The utility model discloses a molten iron covering agent spreadability measuring device which comprises a base, a circular truncated cone, a hopper and a discharging pipe, the circular truncated cone is arranged in the center of the top of the base, the hopper is arranged above the circular truncated cone, the discharging pipe is arranged at the bottom end of the hopper, and high-speed cameras are arranged on the two sides of the discharging pipe through supports. A first rotating shaft is arranged at the central position in the hopper, stirring blades are uniformly distributed on the first rotating shaft, a second rotating shaft is arranged at the bottom end of the first rotating shaft, the second rotating shaft extends into the discharging pipe, and spiral blades are uniformly distributed on the second rotating shaft. By installing the base, the circular truncated cone, the hopper, the discharging pipe, the high-speed camera, the first driving motor, the first rotating shaft, the stirring blade, the second rotating shaft and the spiral blade, the rotating speed of the spiral blade can be controlled, then the flowing-out speed of a covering agent is controlled, and the influence on spreadability measurement is reduced.

Description

Technical Field

[0001] This utility model relates to the field of measuring the spreadability of molten iron covering agents, specifically to a device for measuring the spreadability of molten iron covering agents. Background Technology

[0002] The hot metal covering agent spreading performance measuring device is used to evaluate the spreading performance of hot metal covering agents on the surface of hot metal. Its basic principle is based on putting a certain amount of hot metal covering agent onto a simulated hot metal surface, and then observing and measuring parameters such as the spreading area and spreading speed of the covering agent on the hot metal surface to evaluate its spreading performance.

[0003] A typical device for measuring the spreadability of molten iron covering agent consists of a funnel containing the covering agent and a truncated cone containing simulated molten iron. For example, the molten iron covering agent spreading ability measuring device disclosed in patent number CN202453270U determines the spreading performance of the covering agent by leaking the covering agent into the center of the base disc and accumulating it, and by measuring the accumulation height and the angle difference. However, this measuring device only relies on the switch at the bottom of the funnel to control the leakage of the covering agent, which may lead to uneven falling speed of the covering agent. The unstable falling speed will affect the accumulation pattern, and thus affect the judgment of the spreading ability. Utility Model Content

[0004] The purpose of this invention is to provide a measuring device for the spreadability of molten iron coating agent, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for measuring the spreadability of molten iron covering agent, comprising a base, a frustum, a hopper, and a discharge pipe. A frustum is provided at the center of the top of the base, and a hopper is provided above the frustum. A discharge pipe is provided at the bottom of the hopper, and high-speed cameras are provided on both sides of the discharge pipe via brackets. A first rotating shaft is provided at the center of the inside of the hopper, and stirring blades are evenly distributed on the first rotating shaft. A second rotating shaft is provided at the bottom of the first rotating shaft, extending into the inside of the discharge pipe, and spiral blades are evenly distributed on the second rotating shaft. A first drive motor is fixed at the top of the hopper, and the output end of the first drive motor is connected to the first rotating shaft.

[0006] Preferably, a lead screw is provided at one end of the top of the base, and a drive block is sleeved on the lead screw. One end of the drive block is connected to the hopper through a connector. The horizontal position of the hopper can be precisely adjusted through the threaded transmission between the lead screw and the drive block.

[0007] Preferably, a guide rod is provided on the top side of the base away from the lead screw, and the end of the connector near the guide rod is slidably sleeved with the guide rod through a guide sleeve. The sliding cooperation between the guide rod and the guide sleeve provides stable constraint for the translation of the hopper and effectively eliminates radial shaking in the lead screw drive.

[0008] Preferably, a drive chamber is provided at the bottom of the base, the bottom end of the lead screw extends into the interior of the drive chamber, and a driven gear is provided at the bottom end of the lead screw. Through the meshing transmission of the drive gear and the driven gear, closed power transmission is achieved to avoid the influence of external interference.

[0009] Preferably, the drive chamber is equipped with a second drive motor, and the output end of the second drive motor is equipped with a drive gear that meshes with the driven gear, which can automatically adjust the height of the hopper according to a preset program to adapt to the measurement requirements of different molten iron simulation liquid depths.

[0010] Preferably, slide rails are provided on both sides of the bottom of the truncated cone, and slide grooves matching the slide rails are provided on both sides of the top of the base. The truncated cone 2 is pushed into the hopper 5 by sliding the slide rail 20 in the slide groove 19.

[0011] Preferably, a barrier is provided on the base at the rear of the truncated cone, and the barrier is made of stainless steel to effectively prevent molten iron from splashing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This molten iron covering agent spreading measurement device is equipped with a base, a frustum, a hopper, a discharge pipe, a high-speed camera, a first drive motor, a first rotating shaft, stirring blades, a second rotating shaft, and spiral blades. The hopper contains covering agent. The first drive motor drives the first rotating shaft to rotate, causing the stirring blades to stir the covering agent evenly, breaking up the solid shell formed by the cooling of the covering agent and maintaining its molten fluidity. Then, the covering agent enters the frustum containing molten iron simulation liquid below through the discharge pipe and accumulates. The high-speed camera observes the spreading of the covering agent on the surface of the molten iron simulation liquid in real time. At the same time, the discharge pipe is equipped with a second rotating shaft and spiral blades. The second rotating shaft is connected to the first rotating shaft. The spiral blades rotate around the second rotating shaft to form a spiral conveying channel, providing a basic power guarantee for the stable flow of the covering agent. By adjusting the speed of the first drive motor, the rotation speed of the spiral blades can be precisely controlled, thereby controlling the flow rate of the covering agent, so that the covering agent flows out at a stable speed, reducing the impact on the spreading measurement. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the hopper structure of this utility model;

[0016] Figure 3 For the present utility model Figure 1 Enlarged cross-sectional structural diagram at point A in the middle;

[0017] Figure 4 This is a front view schematic diagram of the frustum structure of this utility model;

[0018] Figure 5 This is a top view schematic diagram of the frustum structure of this utility model.

[0019] In the diagram: 1. Base; 2. Frustum; 3. Lead screw; 4. Drive block; 5. Hopper; 6. First drive motor; 7. Discharge pipe; 8. High-speed camera; 9. Guide rod; 10. First rotating shaft; 11. Stirring blade; 12. Second rotating shaft; 13. Spiral blade; 14. Drive chamber; 15. Second drive motor; 16. Drive gear; 17. Driven gear; 18. Enclosure; 19. Slide groove; 20. Slide rail; 21. Connecting component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-5 An embodiment of this utility model is provided: a measuring device for the spreadability of molten iron covering agent, including a base 1, a frustum 2, a hopper 5 and a discharge pipe 7. The frustum 2 is provided at the center of the top of the base 1, and the hopper 5 is provided above the frustum 2. The covering agent is filled in the hopper 5, and the molten iron simulation liquid is filled in the frustum 2.

[0022] The bottom of the truncated cone 2 is provided with slide rails 20 on both sides, and the top of the base 1 is provided with grooves 19 that match the slide rails 20 on both sides. The truncated cone 2 is pushed into the hopper 5 by sliding the slide rails 20 in the grooves 19.

[0023] A baffle 18 is provided on the base 1 on the rear side of the truncated cone 2 to prevent molten iron from splashing backward and to prevent molten iron from splashing out of the range of the truncated cone 2. The baffle 18 is made of stainless steel, which has good corrosion resistance and strength, and can withstand a certain degree of high temperature and the impact of molten iron splashing. It is not easy to rust or deform.

[0024] A lead screw 3 is provided at one end of the top of the base 1, and a drive block 4 is sleeved on the lead screw 3. One end of the drive block 4 is connected to the hopper 5 through a connector 21.

[0025] The bottom of the base 1 is provided with a drive chamber 14, the bottom of the lead screw 3 extends into the drive chamber 14, and the bottom of the lead screw 3 is provided with a driven gear 17. The drive chamber 14 is provided with a second drive motor 15, and the output end of the second drive motor 15 is provided with a drive gear 16 that meshes with the driven gear 17.

[0026] The second drive motor 15 is started to drive the drive gear 16 to rotate. The drive gear 16 meshes with the driven gear 17, thereby driving the lead screw 3 to rotate. The drive block 4 on the lead screw 3 moves along the lead screw 3 under the rotation of the lead screw 3. The drive block 4 drives the hopper 5 to move through the connecting piece 21. The distance between the hopper 5 and the frustum 2 can be adjusted automatically according to the specifications of the frustum 2 to reduce the risk of splashing of molten iron simulation liquid.

[0027] A guide rod 9 is provided on the top side of the base 1 away from the lead screw 3. The end of the connector 21 near the guide rod 9 is slidably connected to the guide rod 9 through the guide sleeve, which plays a guiding role and ensures that the hopper 5 moves smoothly.

[0028] The bottom end of the hopper 5 is provided with a discharge pipe 7. The center of the hopper 5 is provided with a first rotating shaft 10, and stirring blades 11 are evenly distributed on the first rotating shaft 10. The bottom end of the first rotating shaft 10 is provided with a second rotating shaft 12, which extends into the discharge pipe 7. Spiral blades 13 are evenly distributed on the second rotating shaft 12. The top of the hopper 5 is fixed with a first drive motor 6, and the output end of the first drive motor 6 is connected to the first rotating shaft 10.

[0029] The first drive motor 6 is started to drive the first rotating shaft 10 to rotate. The stirring blades 11 on the first rotating shaft 10 rotate accordingly, stirring the covering agent in the hopper 5, breaking the solid shell formed by the cooling of the covering agent, and maintaining its melt fluidity.

[0030] A valve switch is provided on the discharge pipe 7. When opened, the uniformly stirred covering agent is conveyed downward through the discharge pipe 7. Since the bottom end of the first rotating shaft 10 is provided with a second rotating shaft 12, the second rotating shaft 12 extends into the discharge pipe 7 and the spiral blades 13 are evenly distributed on the second rotating shaft 12. When the first rotating shaft 10 rotates, it drives the second rotating shaft 12 and the spiral blades 13 to rotate.

[0031] The spiral blade 13 rotates around the second rotating shaft 12 to form a spiral conveying channel, providing power for the stable outflow of the covering agent. By adjusting the speed of the first drive motor 6, the rotation speed of the spiral blade 13 can be precisely controlled, thereby controlling the outflow speed of the covering agent, so that the covering agent flows out at a stable speed and falls onto the surface of the molten iron simulation liquid of the truncated cone 2.

[0032] Furthermore, high-speed cameras 8 are installed on both sides of the discharge pipe 7 via brackets, with the lenses aimed at the upper sides of the circular platform 2 to capture the spreading motion of the covering agent. The moment the covering agent comes into contact with the molten iron simulation liquid, the high-speed cameras 8 start recording simultaneously and continue to shoot until the covering agent is completely spread, recording the curve of the spreading radius changing over time.

[0033] The information captured by the high-speed camera 8 is transmitted to the control system, which processes and analyzes the images and recorded data to calculate parameters such as the spreading speed and final spreading area of ​​the covering agent, thereby evaluating the spreading performance of the molten iron covering agent.

[0034] The specific models and specifications of the first drive motor 6, the second drive motor 15, and the high-speed camera 8 need to be determined based on the specifications and parameters of the device. The selection and calculation method is existing technology, so it will not be described in detail here.

[0035] Working Principle: In this embodiment, a covering agent is placed in the hopper 5, and molten iron simulation liquid is placed in the frustum 2. The second drive motor 15 is started, and the output end of the second drive motor 15 drives the drive gear 16 to rotate. The drive gear 16 meshes with the driven gear 17, thereby driving the lead screw 3 to rotate. The drive block 4 on the lead screw 3 moves along the lead screw 3 under the rotation of the lead screw 3. The drive block 4 drives the hopper 5 to move through the connecting piece 21. The distance between the hopper 5 and the frustum 2 can be adjusted automatically according to the specifications of the frustum 2 to reduce the risk of molten iron simulation liquid splashing. Then, the first drive motor 6 is started, and the output end of the first drive motor 6 drives the first rotating shaft 10 to rotate. The stirring blades 11 on the first rotating shaft 10 rotate accordingly, stirring the covering agent in the hopper 5, breaking the solid shell formed by the cooling of the covering agent, and maintaining its molten fluidity. The uniformly stirred covering agent is conveyed downward through the discharge pipe 7. Since the bottom end of the first rotating shaft 10 is provided with a second rotating shaft 12, the second rotating shaft 12 extends... Spiral blades 13 extend into the discharge pipe 7 and are evenly distributed on the second rotating shaft 12. When the first rotating shaft 10 rotates, it drives the second rotating shaft 12 and the spiral blades 13 to rotate. The spiral blades 13 rotate around the second rotating shaft 12 to form a spiral conveying channel, providing power for the stable outflow of the covering agent. By adjusting the speed of the first drive motor 6, the rotation speed of the spiral blades 13 can be precisely controlled, thereby controlling the outflow speed of the covering agent, so that the covering agent flows out at a stable speed and falls onto the surface of the molten iron simulation liquid on the truncated cone 2. High-speed cameras 8 on both sides of the discharge pipe 7 capture the spreading of the covering agent on the surface of the molten iron simulation liquid in real time, recording the time from contact with the surface of the molten iron simulation liquid to complete and stable spreading, as well as the spreading area of ​​the covering agent at different times. The information captured by the high-speed cameras 8 is transmitted to the control system, which processes and analyzes the images and recorded data to calculate parameters such as the spreading speed and final spreading area of ​​the covering agent, thereby evaluating the spreading performance of the molten iron covering agent.

[0036] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A molten iron covering agent spreadability measuring device characterized by comprising: The utility model provides a kind of material conveying device, including base (1), circular table (2), hopper (5) and discharge pipe (7), the top of base (1) is provided with circular table (2) at the central position, and the top of circular table (2) is provided with hopper (5), the bottom end of hopper (5) is provided with discharge pipe (7), and the both sides of discharge pipe (7) are provided with high-speed camera (8) by support, the central position of the inside of hopper (5) is provided with first rotating shaft (10), and first rotating shaft (10) is uniformly distributed with stirring vane (11), the bottom end of first rotating shaft (10) is provided with second rotating shaft (12), second rotating shaft (12) extends to the inside of discharge pipe (7), and second rotating shaft (12) is uniformly distributed with spiral vane (13), the top of hopper (5) is fixed with first driving motor (6), and the output of first driving motor (6) is connected with first rotating shaft (10).

2. A device for measuring the spreadability of a molten metal covering agent according to claim 1, characterized in that: One end of the top of base (1) is provided with screw rod (3), and driving block (4) is sleeved on screw rod (3), one end of driving block (4) is connected with hopper (5) by connecting piece (21).

3. A device for measuring the spreadability of a molten metal covering agent according to claim 2, characterized in that: The side of the top of base (1) away from screw rod (3) is provided with guide rod (9), one end of connecting piece (21) is slidably connected with guide rod (9) by guide sleeve.

4. A molten metal covering agent spreadability measuring device according to claim 2, characterized in that: The bottom end of the inside of base (1) is provided with driving chamber (14), the bottom end of screw rod (3) extends to the inside of driving chamber (14), and the bottom end of screw rod (3) is provided with driven gear (17).

5. A device for measuring the spreadability of a molten metal covering agent according to claim 4, characterised in that: Second driving motor (15) is arranged in the inside of driving chamber (14), and the output of second driving motor (15) is provided with driving gear (16) engaged with driven gear (17).

6. A molten metal covering agent spreadability measuring device according to claim 1, characterized in that: Both sides of the bottom of circular table (2) are provided with slide rail (20), and both sides of the top of base (1) are provided with sliding groove (19) matched with slide rail (20).

7. A molten metal covering agent spreadability measuring device according to claim 1, characterized in that: Fence (18) is arranged on base (1) at the back of circular table (2), and fence (18) is made of stainless steel.

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