Molten iron thermal analyzer with protective sandbox

Abstract

The utility model relates to the technical field of thermal analyzers, in particular to a molten iron thermal analyzer with a protection sandbox, which comprises the protection sandbox, a thermocouple extension line, a thermocouple extension line protection tube, an insulation base, a sample cup support column, a thermocouple contact column and a longitudinal support tube, sand is laid at the bottom of the inner cavity; the bottom end of the longitudinal supporting pipe is fixed in the middle of the bottom of an inner cavity of the protective sand box, the top end of the longitudinal supporting pipe is connected with the lower surface of the insulating base, and a sample cup supporting column used for placing a sample cup is arranged at the top of the insulating base; a thermocouple contact column capable of being in contact with the bottom of the sample cup is arranged at the top of the insulating base. According to the utility model, the thermal analysis measuring seat is combined with the protective sandbox, so that the harm caused by high-temperature molten iron sputtering and the influence of impact or vibration accidentally generated on the measuring seat and the sample cup on the detection process are reduced, and the stability of the detection process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal analyzers, in particular to a molten iron thermal analyzer with a protective sand box. Background Art

[0002] Thermal analyzers are often used to detect carbon-silicon content and carbon equivalent in molten iron in foundries. In thermal analysis, operators need to use a sampling spoon to pour high-temperature molten iron into the sample cup on the measuring seat. Metals often have high surface tension when in liquid state, which can easily cause splashing. At the same time, the casting process is manually operated by operators, which may cause some unexpected shocks or vibrations, which may cause burning of the measuring seat wire or poor contact caused by unstable measuring seat. Usually, workers reduce the casting speed to improve the safety of the test, but the reduction in casting speed also reduces the test efficiency.

[0003] Based on the above reasons, the utility model provides a molten iron thermal analyzer with a protective sand box. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a molten iron thermal analyzer with a protective sandbox. The sandbox's characteristics of blocking heat and absorbing impacts solve the problem of the impact of the sputtering of high-temperature molten metal and the impact of manual operation on the measuring seat affecting the stability of the detection process during thermal analysis.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is:

[0006] The utility model discloses a molten iron thermal analyzer with a protective sandbox, comprising a protective sandbox, a thermocouple extension line, a thermocouple extension line protection tube, an insulating base, a sample cup support column, a thermocouple contact column and a longitudinal support tube.

[0007] The protective sandbox is a square structure with a hollow top and an open top, and the bottom of the inner cavity is paved with sand; the bottom end of the longitudinal support tube is fixed to the middle of the bottom of the inner cavity of the protective sandbox, the top end of the longitudinal support tube is connected to the lower surface of the insulating base, and the top of the insulating base is provided with a sample cup support column for placing the sample cup; the top of the insulating base is provided with a thermocouple contact column capable of contacting the bottom of the sample cup;

[0008] A thermocouple extension wire protection tube connected to the inner cavity of the longitudinal support tube is provided below the side wall of the longitudinal support tube. The top end of the thermocouple extension wire contacts the lower surface of the insulating base, and the bottom end of the thermocouple extension wire passes through the thermocouple extension wire protection tube and is connected to the outside.

[0009] The thermocouple extension wire includes a longitudinal section and a transverse section. The longitudinal section is sleeved on the inner side of the longitudinal support tube, and the transverse section is sleeved on the inner side of the thermocouple extension wire protection tube. The outer wall of the protective sand box is provided with a through hole for the outer end of the transverse section to pass through.

[0010] The upper part of the outer wall of the longitudinal support tube is provided with three threaded holes in an annular array which are matched with the threads of the tightening bolts, and the inner end of the tightening bolt is in tight contact with the upper part of the outer wall of the longitudinal section.

[0011] The bottom end of the longitudinal support tube is fixed in the protective sand box through a sampling measuring seat chassis. The sampling measuring seat chassis is a circular structure with an outer diameter larger than the outer diameter of the longitudinal support tube. The bottom of the sampling measuring seat chassis is placed in the middle of the bottom of the inner cavity of the protective sand box.

[0012] A thermocouple contact column is respectively provided on both sides of the top of the insulating base.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model combines the thermal analysis test stand with the protective sandbox, thereby reducing the hazards of high-temperature molten iron splashing and the impact or vibration accidentally generated on the test stand and the sample cup on the detection process, thereby improving the stability of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 It is a top view of the utility model;

[0018] Figure 4 It is the right view of the utility model.

[0019] In the figure: 1 protective sand box, 2 longitudinal support tube, 3 thermocouple extension wire, 4 thermocouple extension wire protection tube, 5 insulating base, 6 sample cup support column, 7 thermocouple contact column, 8 tightening bolt, 9 longitudinal support tube, 10 through hole, 31 longitudinal section, 32 transverse section. DETAILED DESCRIPTION

[0020] The utility model is further described below:

[0021] See also Figure 1-4 ,

[0022] The utility model discloses a molten iron thermal analyzer with a protective sandbox, comprising a protective sandbox 1, a thermocouple extension line 3, a thermocouple extension line protection tube 4, an insulating base 5, a sample cup support column 6, a thermocouple contact column 7 and a longitudinal support tube 9.

[0023] The protective sandbox 1 is a square structure with a hollow top and an open top, and the bottom of the inner cavity is paved with sand; the bottom end of the longitudinal support tube 9 is fixed to the middle of the bottom of the inner cavity of the protective sandbox 1, and the top end of the longitudinal support tube 9 is connected to the lower surface of the insulating base 5, and the top of the insulating base 5 is provided with a sample cup support column 6 for placing a sample cup; the top of the insulating base 5 is provided with a thermocouple contact column 7 that can contact the bottom of the sample cup;

[0024] A thermocouple extension wire protection tube 4 connected to the inner cavity of the longitudinal support tube 9 is provided below the side wall thereof, the top end of the thermocouple extension wire 3 contacts the lower surface of the insulating base 5, and the bottom end of the thermocouple extension wire 3 passes through the thermocouple extension wire protection tube 4 and is connected to the outside, combining the thermal analysis test seat with the protective sandbox 1, reducing the hazards of high-temperature molten iron sputtering and the impact or vibration accidentally generated on the test seat and the sample cup on the detection process, thereby improving the stability of the detection process.

[0025] Furthermore, the thermocouple extension wire 3 includes a longitudinal section 31 and a transverse section 32, the longitudinal section 31 is sleeved on the inner side of the longitudinal support tube 9, and the transverse section 32 is sleeved on the inner side of the thermocouple extension wire protection tube 4. The outer wall of the protective sand box 1 is provided with a through hole 10 for the outer end of the transverse section 32 to pass through. Preferably, the height of the through hole 10 is the same as the height of the thermocouple extension wire protection tube 4, so that the thermocouple extension wire 3 can more conveniently pass through the through hole 10 to connect to the external analyzer.

[0026] Furthermore, there are three threaded holes in a circular array on the upper part of the outer wall of the longitudinal support tube 9 that are threadedly matched with the tightening bolt 8. The inner end of the tightening bolt 8 is in tight contact with the upper part of the outer wall of the longitudinal section 31. The outer wall of the thermocouple extension wire 3 is tightened and fixed by tightening the three tightening bolts 8 in conjunction with the threaded holes. The fixation is relatively simple and easy to disassemble.

[0027] Furthermore, the bottom end of the longitudinal support tube 9 is fixed in the protective sand box 1 through the sampling measuring seat chassis 2. The sampling measuring seat chassis 2 is a circular structure, and its outer diameter is larger than the outer diameter of the longitudinal support tube 9. The bottom of the sampling measuring seat chassis 2 is placed in the middle of the bottom of the inner cavity of the protective sand box 1. By setting the sampling side seat chassis 2, the longitudinal support tube 9 can be stably placed in the protective sand box 1 without a fixed connection. Preferably, sand is laid on the upper surface of the sampling measuring seat chassis 2 for more stable placement.

[0028] Furthermore, a thermocouple contact column 7 is provided on both sides of the top of the insulating base 5, so that the measured data is more accurate.

[0029] The above description is only an embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent transformation made by using the contents of the specification and drawings of the present utility model or directly or indirectly applied in the relevant technical field is also included in the patent protection scope of the present utility model.

Claims

1. A molten iron thermal analyzer with a protective sandbox, characterized in that: The invention comprises a protective sand box (1), a thermocouple extension wire (3), a thermocouple extension wire protection tube (4), an insulating base (5), a sample cup support column (6), a thermocouple contact column (7) and a longitudinal support tube (9). The protective sandbox (1) is a square structure with a hollow top and an open top, and the bottom of the inner cavity is paved with sand; the bottom end of the longitudinal support tube (9) is fixed to the middle of the bottom of the inner cavity of the protective sandbox (1), the top end of the longitudinal support tube (9) is connected to the lower surface of the insulating base (5), and the top of the insulating base (5) is provided with a sample cup support column (6) for placing a sample cup; the top of the insulating base (5) is provided with a thermocouple contact column (7) capable of contacting the bottom of the sample cup; A thermocouple extension wire protection tube (4) communicating with the inner cavity of the longitudinal support tube (9) is provided below the side wall thereof; the top end of the thermocouple extension wire (3) contacts the lower surface of the insulating base (5); and the bottom end of the thermocouple extension wire (3) passes through the thermocouple extension wire protection tube (4) and is connected to the outside.

2. The molten iron thermal analyzer with a protective sandbox according to claim 1, characterized in that: The thermocouple extension wire (3) comprises a longitudinal section (31) and a transverse section (32), wherein the longitudinal section (31) is sleeved on the inner side of the longitudinal support tube (9), and the transverse section (32) is sleeved on the inner side of the thermocouple extension wire protection tube (4), and a through hole (10) is provided on the outer wall of the protection sand box (1) for the outer end of the transverse section (32) to pass through.

3. The molten iron thermal analyzer with a protective sandbox according to claim 2, characterized in that: The upper part of the outer wall of the longitudinal support tube (9) has three threaded holes in an annular array that are threadably matched with the tightening bolts (8), and the inner ends of the tightening bolts (8) are in tight contact with the upper part of the outer wall of the longitudinal section (31).

4. The molten iron thermal analyzer with a protective sandbox according to claim 1, characterized in that: The bottom end of the longitudinal support tube (9) is fixed in the protective sand box (1) via a sampling measuring seat chassis (2); the sampling measuring seat chassis (2) is a circular structure, and its outer diameter is larger than the outer diameter of the longitudinal support tube (9); the bottom of the sampling measuring seat chassis (2) is placed in the middle of the bottom of the inner cavity of the protective sand box (1).

5. The molten iron thermal analyzer with a protective sandbox according to claim 1, characterized in that: A thermocouple contact column (7) is provided on both sides of the top of the insulating base (5).

Images