Molten steel sampling system

Abstract

The utility model relates to the technical field of steel smelting, in particular to a molten steel sampling system, which comprises a sampling cup for sampling molten steel and a base positioning seat for downwards placing and positioning the sampling cup, the sampling cup is formed by splicing the left half cup body and the right half cup body left and right, so that the sampling consistency is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel smelting, particularly relates to a molten steel sampling system. BACKGROUND

[0002] The main purpose of molten steel sampling is to take out a shaped steel sample for spectral analysis, which has the characteristics of simple structure, convenient application, time saving, high sampling rate and the like. It is widely used in steelmaking electric furnace, converter, continuous casting, secondary refining and other process. After molten steel sampling, it will be cooled and solidified, and then taken out for subsequent test and analysis, to ensure that the composition and quality of molten steel meet the requirements, so as to ensure the quality of the final product.

[0003] Many existing sampling structures, such as the Chinese patent with application number 202223370628.X, disclose a height-adjustable molten steel sampler for steelmaking, which comprises a sampling cup, the right side of the sampling cup is fixedly connected with a fixed rod, the inner wall of the sampling cup is provided with a limiting groove on both sides, the inside of the sampling cup is provided with a movable pad, the lower part of the movable pad is fixedly connected with a supporting block, the supporting block is fixedly connected with a limiting block on both sides, and the inner wall of the sampling cup is fixedly connected with a connecting rod on the lower side.

[0004] The existing molten steel sampling equipment is not easy to demold, and sometimes it is not convenient for automatic equipment turnover. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a molten steel sampling system with better sampling consistency.

[0006] The above-mentioned purpose of the utility model is realized by the following technical scheme: a molten steel sampling system, comprising a sampling cup for sampling molten steel and a base positioning seat for positioning the sampling cup downward, a positioning groove recessed from top to bottom is formed on the base positioning seat, and the sampling cup is composed of a left half cup body and a right half cup body.

[0007] As a preferred embodiment of the utility model, the sampling inner cup cavity of the sampling cup is cylindrical, and the outer wall surface of the sampling cup comprises an upper cylindrical outer wall surface and an inverted conical outer wall surface connected to the lower side of the cylindrical outer wall surface.

[0008] As a preferred embodiment of the utility model, the side groove wall surface of the positioning groove comprises an inverted conical groove wall surface and a cylindrical groove wall surface connected to the lower side of the inverted conical groove wall surface, the taper of the inverted conical groove wall surface is consistent with the taper of the inverted conical outer wall surface, and the length of the inverted conical outer wall surface is greater than the length of the inverted conical outer wall surface.

[0009] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0010] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0011] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0012] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0013] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0014] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0015] As the preferred of the utility model, the upside and downside length of the inverted conical outer wall surface is greater than the upside and downside length of the positioning groove, at least one part of the inverted conical outer wall surface can be exposed in the positioning groove.

[0016] The utility model discloses the beneficial effect: molten steel sample solidification demoulding is easy, and the sample is better in consistency, and the damage rate is less, and the turnover of sampling process is more convenient, and is suitable for automatic operation. ACCURACY

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the sampling cup in the embodiment;

[0018] Figure 2 It is Figure 1 The three-dimensional structure schematic diagram of the sampling cup in the embodiment;

[0019] Figure 3 It is Figure 1 The three-dimensional structure schematic diagram of the sampling cup in the embodiment;

[0020] Figure 4 is Figure 3 Another side view of the structure of the embodiment;

[0021] Figure 5 is the structure of the base positioning seat in the embodiment;

[0022] Figure 6 is Figure 5 The structure of the embodiment is cut open;

[0023] Figure 7 is the structure of the molten steel sampling system in the embodiment in the positioning and use state;

[0024] Figure 8 is Figure 1 The structure of the base positioning seat in the embodiment is cut open;

[0025] Figure 9 is Figure 8 The structure of the embodiment is further optimized;

[0026] Figure 10 is Figure 5 The structure of the embodiment is further optimized;

[0027] Figure 11 is Figure 10 The structure of the embodiment is positioned with a sampling cup. DETAILED DESCRIPTION

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] The present application will be further described in detail below with reference to the accompanying drawings. Figure 1-11As shown, a molten steel sampling system comprises a sampling cup 1 for sampling molten steel and a base positioning seat 2 for positioning the sampling cup 1 downward, the base positioning seat 2 is provided with a positioning groove 20 recessed downward from top to bottom, and the sampling cup 1 is composed of a left half cup body 11 and a right half cup body 12. The design idea of the present application is to set the sampling cup 1 into a split structure, so as to realize demolding by splitting the left half cup body 11 and the right half cup body 12, of course, the left half cup body 11 and the right half cup body 12 are spliced into a complete sampling cup 1 during sampling. Then in order to ensure the stability during sampling, the spliced complete sampling cup 1 is positioned in the base positioning seat 2 to ensure that the spliced sampling cup of the left half cup body 11 and the right half cup body 12 does not shift, thereby avoiding the risk of sampling and the problem of sampling sample.

[0031] The left half cup body 11 and the right half cup body 12 can be made of high-temperature alloy material, heat-resistant ceramic material or special coating material. Before sampling, the left half cup body 11 and the right half cup body 12 are initially spliced by aligning left and right, then the half cup body 11 and the right half cup body 12 can be gripped by a mechanical hand or other automatic equipment to form an original splicing body, then the left half cup body 11 and the right half cup body 12 are positioned downward in the positioning groove 20 at the same time to complete positioning, after positioning, the left half cup body 11 and the right half cup body 12 are spliced into a complete sampling cup 1, of course, the manufacturing process of the left half cup body 11 and the right half cup body 12 needs to ensure that there is no gap after complete splicing. Then the molten steel is injected into the complete sampling cup 1, after the molten steel solidifies, the sampling cup 1 is taken out by the automatic equipment, then the left half cup body 11 and the right half cup body 12 are pulled apart to realize demolding.

[0032] As preferred, the sampling inner cup cavity 10 of the sampling cup 1 is in a cylindrical shape, and the outer wall surface of the sampling cup 1 comprises an upper cylindrical outer wall surface 101 and an inverted conical outer wall surface 102 connected below the cylindrical outer wall surface 101. This setting makes the molten steel sample obtained by the sampling inner cup cavity 10 in a cylindrical shape, and after solidification, it is also a cylindrical sample with a relatively regular shape. The outer wall surface is set to facilitate the turnover of automatic equipment. If the outer wall surface is all cylindrical, the automatic equipment such as mechanical hand is not easy to take and place, and if it is gripped too tightly, it is easy to be damaged. The shape of the cylindrical outer wall surface 101 plus the inverted conical outer wall surface 102 below makes it easy to take and place, as long as it is slightly gripped at the inverted conical outer wall surface 102 part. The maximum diameter of the top of the cylindrical outer wall surface 101 is less than or equal to the diameter of the cylindrical outer wall surface 101, so that the structure of small below and large above is beneficial to holding.

[0033] Further, the side groove wall surface of the positioning groove 20 comprises an inverted tapered groove wall surface 201 and a cylindrical groove wall surface 202 connected to the lower side of the inverted tapered groove wall surface 201, the taper of the inverted tapered groove wall surface 201 is consistent with the taper of the inverted tapered outer wall surface 102, the inverted tapered groove wall surface 201 matches the inverted tapered groove wall surface 201 of the sampling cup 1, the two surfaces are in close contact and guide downward, and finally limit the position, because the upper part of the inverted tapered groove wall surface 201 is definitely getting larger in diameter, when the part with the same diameter as the inverted tapered groove wall surface 201 is in contact, it will be limited and will not go down.

[0034] Further, the length of the inverted tapered outer wall surface 102 is greater than the length of the inverted tapered outer wall surface 102, so that the inverted tapered outer wall surface 102 has enough downward part to enter the groove inner space surrounded by the cylindrical groove wall surface 202 of the positioning groove 20, more importantly, the diameter of at least 50% of the part from the bottom to the top of the inverted tapered outer wall surface 102 is smaller than the minimum diameter of the lowest part of the inverted tapered groove wall surface 201, so that more of the lower part of the sampling cup 1 can enter the groove inner space surrounded by the cylindrical groove wall surface 202, ensuring the stability of the center of gravity.

[0035] As a preferred embodiment, the length of the inverted tapered outer wall surface 102 is greater than the length of the positioning groove 20, and at least a part of the inverted tapered outer wall surface 102 can be exposed to the positioning groove 20, which is designed to ensure that the exposed part of the inverted tapered outer wall surface 102 can be easily gripped by automatic equipment and is not easy to slip. The length refers to the vertical distance. Of course, the aforementioned at least a part of the inverted tapered outer wall surface 102 exposed to the positioning groove 20 refers to the stable state after the sampling cup 1 is placed in the positioning groove 20, that is, the exposed state during sampling.

[0036] As a preferred embodiment, there is a gap between the bottom of the sampling cup 1 and the bottom of the positioning groove 20 in the state after the sampling cup 1 is placed in the positioning groove 20, specifically, there needs to be a gap between the lower bottom surface of the bottom of the sampling cup 1 and the groove bottom surface of the positioning groove 20, which is to prevent the left half cup body 11 and the right half cup body 12 from colliding with the bottom if there is a difference in the upward and downward movement, which will generate a considerable impact force. If both halves are synchronized in upward and downward movement, if the lower bottom surface of the bottom of the sampling cup 1 is in close contact with the groove bottom surface of the positioning groove 20, but due to the manufacturing process, there will be errors, which will result in insufficient tightness of the joint or a considerable impact force generated by the downward movement of both. Therefore, a gap is left to make the joint more tight and not easy to hit the bottom of the groove.

[0037] Further, under the aforementioned gap condition, a buffering rod 3 capable of ascending and descending is installed on the bottom of the positioning groove 20, the buffering rod 3 can adopt a pneumatic rod or a hydraulic rod, and has active and passive control capabilities, a supporting floating horizontal platform 31 in a horizontal shape for the bottom surface of the sampling cup 1 to abut is fixed on the top of the buffering rod 3, that is, the top of the telescopic part of the buffering rod 3 can fix the supporting floating horizontal platform 31, the supporting floating horizontal platform 31 can adopt a smooth flat cylindrical platform, the bottom surface of the sampling cup 1 is in a horizontal shape, that is, a horizontal plane, and the supporting floating horizontal platform 31 can simultaneously abut the bottom surfaces of the left half cup body 11 and the right half cup body 12, is generally arranged in the central area, and ensures the symmetrical balance of force. When the sampling cup 1 is placed, the buffering rod 3 can be in a passive state and slowly sink to be positioned, so as to ensure that it is sunk to a spliced and compact state, then the molten steel is injected for sampling, the sampling solidification is completed, the buffering rod 3 can actively ascend to elevate the sampling cup 1 to a certain height, so as to facilitate the automatic equipment to take out. Then the next working cycle is entered.

[0038] As preferred, the left half cup body 11 comprises a left half cylindrical cup body 111, a left half conical cup body 112 and a left half circular cup bottom 113 which are integrally connected in sequence from top to bottom, and the right half cup body 12 comprises a right half cylindrical cup body 121, a right half conical cup body 122 and a right half circular cup bottom 123 which are integrally connected in sequence from top to bottom, and the left half cylindrical cup body 111, the left half conical cup body 112 and the left half circular cup bottom 113 are respectively left-right mirror-symmetrical to the right half cylindrical cup body 121, the right half conical cup body 122 and the right half circular cup bottom 123, and this specific style facilitates left-right splicing.

[0039] And in order to ensure the consistency of the horizontal position, the following design is made: a splicing positioning plug 1130 extending to the right is formed on the right side surface part of the left half circular cup bottom 113, a splicing positioning slot 1230 extending to the left matched with the splicing positioning plug 1130 is arranged on the left side surface part of the right half circular cup bottom 123, and the size of the splicing positioning plug 1130 and the splicing positioning slot 1230 is matched. The left half circular cup bottom 113 and the right half circular cup bottom 123 can be respectively pre-inserted and spliced through the splicing positioning plug 1130 and the splicing positioning slot 1230 by automatic transverse moving equipment, and then the sampling cup 1 is gripped by gripping equipment, but the gripping equipment cannot be very tight, so the left half circular cup bottom 113 and the right half circular cup bottom 123 can be displaced left and right, but the horizontal position is stable, and then the sampling cup 1 is further sunk and positioned in the positioning groove 20, so as to become compact and gapless, the gripping equipment can be released on the supporting floating horizontal platform 31, and the supporting floating horizontal platform 31 can be automatically sunk to be positioned.

[0040] As preferred, the left half-circular cup bottom 113 and the right half-circular cup bottom 123 are both provided with front-rear extending and penetrating split operation grooves 1123 for left-right split, the split operation grooves 1123 are designed to facilitate the straight-line tool to split and combine the two, only left-right moving operation is needed.

[0041] As preferred, the base positioning seat 2 is cylindrical, the positioning grooves 20 are distributed in a circumferential array on the base positioning seat 2, the design of the multiple positioning grooves 20 can put multiple sampling cups 1 for use, further, the base positioning seat 2 can be installed and connected on a rotary motor, each sampling is replaced by the next one after one rotation, the sampling is taken out from the sampling injection area, and is taken out in another area after solidification, the efficiency is higher, and the flow line operation is formed.

[0042] Through the above design, the sampling cup 1 is easy to split and combine, the high-quality and consistent molten steel sampling product is obtained, the damage to the equipment and the sample itself is less, the turnover is convenient, and the efficiency is also improved.

[0043] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A molten steel sampling system, characterized in that, It includes a sampling cup (1) for sampling molten steel and a base positioning seat (2) for positioning the sampling cup (1) downwards. The base positioning seat (2) has a positioning groove (20) that is recessed from top to bottom. The sampling cup (1) is composed of a left half cup body (11) and a right half cup body (12) joined together.

2. The steel sampling system according to claim 1, characterized in that, The sampling inner cavity (10) of the sampling cup (1) is cylindrical, and the outer wall of the sampling cup (1) includes an upper cylindrical outer wall (101) and an inverted conical outer wall (102) connected to the lower side of the cylindrical outer wall (101).

3. A molten steel sampling system according to claim 2, characterized in that, The side wall of the positioning groove (20) includes an inverted conical groove wall (201) and a cylindrical groove wall (202) connected to the lower side of the inverted conical groove wall (201). The taper of the inverted conical groove wall (201) is the same as the taper of the inverted conical outer wall (102). The vertical length of the inverted conical outer wall (102) is greater than the vertical length of the inverted conical outer wall (102).

4. A molten steel sampling system according to claim 3, characterized in that, The vertical length of the inverted conical outer wall surface (102) is greater than the vertical length of the positioning groove (20), and at least a portion of the inverted conical outer wall surface (102) can be exposed in the positioning groove (20).

5. A molten steel sampling system according to claim 4, characterized in that, When the sampling cup (1) is placed into the positioning groove (20), there is an upper and lower gap between the bottom of the sampling cup (1) and the bottom of the positioning groove (20).

6. A molten steel sampling system according to claim 1, characterized in that, The bottom of the positioning groove (20) is equipped with a buffer rod (3) that can be raised and lowered. The top of the buffer rod (3) is fixed with a horizontal support floating platform (31) for the bottom surface of the sampling cup (1) to be against. The bottom surface of the sampling cup (1) is horizontal, and the support floating platform (31) can simultaneously be against the bottom surfaces of the left half of the cup body (11) and the right half of the cup body (12).

7. A molten steel sampling system according to claim 6, characterized in that, The left half of the cup body (11) includes a left semi-cylindrical cup body (111), a left semi-conical cup body (112), and a left semi-circular cup bottom (113) that are connected vertically. The right half of the cup body (12) includes a right semi-cylindrical cup body (121), a right semi-conical cup body (122), and a right semi-circular cup bottom (123) that are connected vertically. The left semi-cylindrical cup body (111), the left semi-conical cup body (112), and the left semi-circular cup bottom (113) are mirror-symmetrical to the right semi-cylindrical cup body (121), the right semi-conical cup body (122), and the right semi-circular cup bottom (123) respectively.

8. A molten steel sampling system according to claim 7, characterized in that, A right-extending splicing positioning plug (1130) is formed on the right side of the left semi-circular cup bottom (113), and a left-extending splicing positioning slot (1230) that mates with the splicing positioning plug (1130) is provided on the left side of the right semi-circular cup bottom (123).

9. A molten steel sampling system according to claim 7, characterized in that, Both the bottom of the left semi-circular cup (113) and the bottom of the right semi-circular cup (123) are provided with splitting operation grooves (1123) that extend forward and backward and penetrate through the bottom for left and right splitting.

10. A molten steel sampling system according to claim 1, characterized in that, The base positioning seat (2) is cylindrical, and the positioning groove (20) has multiple grooves and is distributed in a circumferential array on the base positioning seat (2).

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