High-temperature-resistant weighing device

Abstract

The utility model relates to a high-temperature-resistant weighing device, and relates to the technical field of weighing devices, the high-temperature-resistant weighing device comprises a bottom plate, a mounting seat, a weighing sensor and an upper top plate, the mounting seat is fixedly connected to the upper end surface of the bottom plate, the weighing sensor is mounted in the mounting seat, and the upper top plate is fixedly connected to the upper end of the weighing sensor to separate a weighing object and the weighing sensor; a cooling assembly is further arranged in the mounting base and comprises a water tank, a water pump and a cooling water pipe, the two ends of the water pump communicate with the water tank and the cooling water pipe correspondingly to pump cooling liquid in the water tank into the cooling water pipe, the end, away from the water pump, of the cooling water pipe communicates with the water tank, and the cooling water pipe penetrates through the side wall of the upper top plate to absorb heat of the upper top plate. The method has the effect of reducing the influence of the high temperature of the weighed object on the weighing accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of weighing devices, and in particular to a high temperature resistant weighing device. Background Art

[0002] During the steel smelting process, electronic scales are usually used to weigh the molten steel in the ladle in real time to ensure safe production and improve product quality and output.

[0003] In the related art, the ladle is hoisted by a crane and placed on a weighing device before and after steel is tapped, and the weighing device weighs the ladle in real time through a weighing sensor.

[0004] During the weighing process, since the existing weighing technology is mainly suitable for room temperature occasions, and the temperature of the molten steel in the ladle can reach 1650℃, the heat of the molten steel is transmitted to the weighing sensor through the ladle, which can easily cause the weighing sensor to be affected by the high temperature of the molten steel and cause the welds to melt and the stress structure in the elastomer to change, which is not conducive to the accurate weighing of the ladle. In addition, in the case of continuous weighing, the heat at the contact position of the ladle is difficult to dissipate, and may even cause complete damage to the weighing sensor. Utility Model Content

[0005] In order to reduce the influence of high temperature of the weighing object on the weighing accuracy, the present application provides a high temperature resistant weighing device.

[0006] The present application provides a high temperature resistant weighing device, which adopts the following technical solution:

[0007] A high temperature resistant weighing device comprises a base plate, a mounting seat, a weighing sensor and an upper top plate, wherein the mounting seat is fixedly connected to the upper end surface of the base plate, the weighing sensor is installed in the mounting seat, and the upper top plate is fixedly connected to the upper end of the weighing sensor to separate the weighing object and the weighing sensor. A cooling assembly is also arranged in the mounting seat, and the cooling assembly comprises a water tank, a water pump and a cooling water pipe, wherein both ends of the water pump are respectively connected to the water tank and the cooling water pipe to pump the coolant in the water tank into the cooling water pipe, the cooling water pipe is connected to the water tank at an end away from the water pump, and the cooling water pipe is passed through the side wall of the upper top plate to absorb the heat of the upper top plate.

[0008] By adopting the above technical solution, the coolant in the water tank is pumped into the cooling water pipe through a water pump, so that the coolant passes through the upper top plate along the cooling water pipe to absorb the heat conducted to the upper top plate by the weighing object. Since the coolant has a large specific heat capacity, the heat conducted to the weighing sensor can be reduced, thereby reducing the impact of the high temperature of the weighing object on the weighing accuracy.

[0009] Optionally, the cooling water pipe includes a connecting main pipe and a heat absorbing branch pipe, and there are multiple heat absorbing branch pipes. One end of the connecting main pipe is connected to the water outlet of the water pump and is connected to the side wall and connected to one end of several heat absorbing branch pipes. Several of the heat absorbing branch pipes are penetrated through the side wall of the upper top plate to absorb the heat of the upper top plate.

[0010] By adopting the above technical solution, multiple heat-absorbing branch pipes are passed through the upper top plate, which can increase the contact area between the cooling water pipe and the upper top plate, improve the efficiency of heat absorption, and further reduce the heat conducted from the upper top plate to the weighing sensor, thereby reducing the impact of high temperature of the weighing object on the weighing accuracy.

[0011] Optionally, several of the heat-absorbing branch pipes include a branch pipe body and a spiral connecting pipe, the branch pipe body is penetrated through the side wall of the upper top plate, two ends of the spiral connecting pipe are respectively connected to the connecting main pipe and the branch pipe body, the axis of the spiral connecting pipe is spiral, and the spiral connecting pipe is inclined toward one end of the branch pipe body and the axis of the branch pipe body.

[0012] By adopting the above technical solution, the coolant is transmitted in a spiral direction through the spiral connecting pipe, and the coolant enters the branch pipe body along the spiral direction of the pipe wall to flush the scale formed on the inner wall of the branch pipe body during long-term use, thereby reducing the influence of the scale on the heat absorption effect of the coolant and better ensuring the heat insulation effect of the weighing sensor.

[0013] Optionally, the cooling water pipe further comprises a plurality of heat dissipation branch pipes, both ends of which are respectively connected to the heat absorption branch pipe and the water tank, and the plurality of heat dissipation branch pipes are passed through and abut against the bottom plate.

[0014] By adopting the above technical solution, the coolant can enter the heat absorbing branch pipe after being heated up by the heat absorbing branch pipe, and cool down the coolant by transferring the heat to the bottom plate, thereby reducing the temperature of the coolant entering the water tank, and achieving a better effect of circulating cooling on the top plate, thereby further reducing the influence of high temperature of the weighing object on the weighing accuracy.

[0015] Optionally, a filter assembly is provided in the water tank, and the filter assembly includes a filter plate arranged along the cross-section of the water tank, and the filter plate is located below the water inlet end of the water pump to filter the coolant entering the water pump.

[0016] By adopting the above technical solution, the filter can reduce the scale entering the water pump and the heat absorption branch pipe, reduce the influence of the scale on the heat absorption effect of the coolant in the heat absorption branch pipe, make the coolant absorb heat better on the top plate, and better ensure the heat insulation effect of the weighing sensor.

[0017] Optionally, the water tank is provided with an installation opening on the upper end surface, and a baffle is hinged on the upper end surface of the water tank for closing the installation opening, the filter assembly also includes a connecting frame, a mounting net and a connecting rod, the mounting net is arranged in the connecting frame to form a mounting groove for the filter plate to be installed, the connecting frame is hinged to the inner wall of the water tank at the side wall, and the two ends of the connecting rod are respectively hinged to the connecting frame and the baffle, when the baffle rotates upward, the connecting rod drives one end of the connecting frame to rotate close to the installation opening.

[0018] By adopting the above technical solution, the connecting frame and the filter plate can be rotated to a position close to the installation port by rotating the baffle, so as to facilitate the replacement of the filter plate, so that the filter plate has a better filtering effect on scale, thereby reducing the speed of scale formation in the heat-absorbing branch pipe and better ensuring the heat insulation effect of the weighing sensor.

[0019] Optionally, a positioning plate is provided on the inner wall of the water tank, and the positioning plate abuts against the upper end of the filter plate away from the installation opening.

[0020] By adopting the above technical solution, the connecting frame can be positioned by the positioning plates and connecting rods respectively located at both ends, and the positioning plates abut against the filter plate to make the filter plate installation more stable, reduce the impact of the water pump extracting coolant on the stability of the filter plate, better ensure the filter plate's filtering effect on scale entering the heat absorption branch pipe, and make the upper top plate have a better insulation effect on the weighing sensor.

[0021] Optionally, the baffle is provided with a spring buckle on the side wall away from the hinge axis, and the water tank is provided with a slot for the spring buckle to be inserted into near the baffle.

[0022] By adopting the above technical solution, the position of the baffle plate when closing the installation opening can be made more stable by inserting the spring clip into the slot, reducing the possibility of the baffle plate rotating due to the impact force of the weighing object, and reducing the amount of debris that easily forms scale by entering the water tank through the installation opening, thereby better ensuring the heat absorption effect of the coolant in the heat absorption branch pipe and making the upper top plate have a better insulation effect on the weighing sensor.

[0023] Optionally, the spring buckle includes a card block and a support spring, the baffle is provided with a sliding groove at the upper end for the card block to slide, the two ends of the support spring are respectively abutted against the inner wall of the sliding groove and one end of the card block, the support spring has a tendency to drive the card block close to the slot in a natural state, and the card block is provided with a toggle plate on the side away from the bottom surface of the sliding groove.

[0024] By adopting the above technical solution, the user can use the toggle plate to toggle the card block to open the baffle, thereby conveniently unlocking the baffle to open the installation opening.

[0025] Optionally, a plurality of the heat absorbing branch pipes are evenly spaced along the width direction of the upper top plate.

[0026] By adopting the above technical solution, the heat absorbing branches are evenly spaced to make the heat absorbing effect on the upper plate more uniform, thereby reducing the damage to the weighing sensor caused by local overheating of the upper plate and further reducing the influence of high temperature of the weighing object on the weighing accuracy.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The water pump can pump the coolant in the water tank into the cooling water pipe, so that the coolant passes through the upper top plate along the cooling water pipe to absorb the heat conducted to the upper top plate by the weighing object. Since the coolant has a large specific heat capacity, the heat conducted to the weighing sensor can be reduced, and the arrangement of multiple heat-absorbing branches can increase the contact area and reduce the influence of the high temperature of the weighing object on the weighing accuracy.

[0029] 2. Through the setting of the spiral connecting pipe, the coolant can enter the branch pipe body in an oblique direction to flush the scale in the branch pipe body, so as to achieve better heat conduction effect and further reduce the influence of high temperature of the weighing object on the weighing accuracy.

[0030] 3. The filter can filter the water in the water tank to reduce the scale entering the water pump and the heat absorption branch pipe. The connection frame where the filter is installed can be rotated by rotating the baffle to replace the filter, which can further reduce the impact of high temperature of the weighing object on the weighing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall schematic diagram of the high temperature resistant weighing device in the embodiment of the present application.

[0032] Figure 2 yes Figure 1 Cross-sectional view along the AA direction.

[0033] Figure 3 It is an exploded schematic diagram of the cooling component and the filtering component in the embodiment of the present application.

[0034] Figure 4 It is an exploded schematic diagram of the spring clip and the surrounding components of the spring clip in the embodiment of the present application.

[0035] Explanation of the reference numerals: 1. bottom plate; 2. mounting seat; 21. water inlet pipe; 22. water outlet pipe; 3. weighing sensor; 4. upper top plate; 5. buffer assembly; 51. upper pressure plate; 52. disc spring; 53. upper pressure seat; 6. cooling assembly; 61. water tank; 611. mounting port; 612. positioning plate; 613. slot; 62. water pump; 63. cooling water pipe; 631. connecting main pipe; 632. heat absorbing branch pipe; 6321. branch pipe body; 6322. spiral connecting pipe; 633. heat dissipation branch pipe; 64. baffle; 641. slide groove; 65. spring buckle; 651. block; 652. support spring; 653. toggle plate; 7. filter assembly; 71. filter sheet; 72. connecting frame; 73. mounting net; 74. connecting rod; 75. mounting groove. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The present application embodiment discloses a high temperature resistant weighing device. Figure 1 The high temperature resistant weighing device comprises a base plate 1, a mounting seat 2, a weighing sensor 3, an upper top plate 4 and a buffer assembly 5.

[0038] The mounting base 2 is welded to the upper end surface of the base plate 1, the weighing sensor 3 is fixed in the mounting base 2 by bolts, the upper top plate 4 is bolted to the upper end of the weighing sensor 3 to separate the weighing object and the weighing sensor 3, and the buffer assembly 5 is embedded in the upper end of the upper top plate 4 to buffer the downward pressure impact force of the weighing object placed by the crane during weighing.

[0039] Reference Figure 1 and Figure 2 The buffer assembly 5 includes an upper pressure plate 51, a disc spring 52 and an upper pressure seat 53. The lower end of the upper pressure seat 53 is embedded and welded to the upper end of the upper top plate 4, the disc spring 52 is arranged in the upper pressure seat 53, and the upper pressure seat 53 is annular to fit the shape of the disc spring 52. The disc spring 52 is provided with multiple disc springs 52 and the disc springs 52 are coaxially arranged in the vertical direction. The lower end of the upper pressure plate 51 is inserted into the vertical hole of the disc spring 52. The disc spring 52 can buffer the downward pressure of the upper pressure plate 51, thereby reducing the instantaneous impact force of the ladle on the weighing sensor 3 during weighing.

[0040] The upper plate 4, the upper pressure plate 51 and the upper pressure seat 53 can all be made of cast steel, which has low cost while ensuring pressure bearing performance. The cross-sectional area of ​​the upper plate 4 is larger than the cross-sectional area of ​​the weighing sensor 3 to reduce the pressure of the buffer assembly 5 on the weighing sensor 3.

[0041] Reference Figure 1 and Figure 2A cooling assembly 6 is also provided in the mounting base 2. The cooling assembly 6 includes a water tank 61, a water pump 62 and a cooling water pipe 63. The two ends of the water pump 62 are respectively connected to the water tank 61 and the cooling water pipe 63 to pump the coolant in the water tank 61 into the cooling water pipe 63. The cooling water pipe 63 is connected to the water tank 61 at one end away from the water pump 62, and the cooling water pipe 63 is passed through the side wall of the upper top plate 4 to absorb the heat of the upper top plate 4. Among them, the coolant can be water, which has a large specific heat capacity and a good heat absorption effect. During use, the staff can regularly add soda powder to the coolant to remove the scale generated in the cooling water pipe 63.

[0042] The cooling water pipe 63 includes a connecting main pipe 631 and a heat absorbing branch pipe 632. There are multiple heat absorbing branch pipes 632. One end of the connecting main pipe 631 is connected to the water outlet of the water pump 62 and is connected to the side wall and connected to one end of several heat absorbing branch pipes 632. Several heat absorbing branch pipes 632 are all penetrated through the side wall of the upper top plate 4 to absorb the heat of the upper top plate 4.

[0043] The mounting base 2 is provided with a water inlet pipe 21 and a water outlet pipe 22 on the outside, wherein the water inlet pipe 21 is connected to the water tank 61, and the water outlet pipe 22 is connected to the end of the heat absorbing branch pipe 632 away from the water pump 62. The staff can pass cooling water from the water inlet pipe 21, add soda powder or the like to dissolve scale during cleaning, and discharge the cooling water from the water outlet pipe 22 to facilitate cleaning of the heat absorbing branch pipe 632.

[0044] The cooling water pipe 63 further includes a plurality of heat dissipation branch pipes 633 , both ends of which are respectively connected to the heat absorption branch pipe 632 and the water tank 61 , and the plurality of heat dissipation branch pipes 633 are passed through and abut against the bottom plate 1 .

[0045] Several heat absorbing branch pipes 632 are evenly spaced along the width direction of the upper top plate 4 to make the temperature of the upper top plate 4 more uniform. Preferably, the connecting main pipe 631 adopts a ppr pipe, which has good heat resistance and is easy to weld. The caliber of the connecting main pipe 631 is larger than the caliber of the heat absorbing branch pipe 632 and the heat dissipation straight pipe to increase the flow rate of water from the connecting main pipe 631 into the heat dissipation straight pipe.

[0046] Among them, the heat dissipation branch pipe 633 and the heat absorption branch pipe 632 are connected by a large-diameter water pipe, so that the cooling water in the high-temperature area is mixed with the cooling water in the lower temperature area after the cooling water absorbs heat, and the cooling water temperature entering the heat dissipation branch pipe 633 is averaged, thereby reducing the overall temperature of the cooling water.

[0047] Reference Figure 2 and Figure 3The plurality of heat absorbing branch pipes 632 each include a branch pipe body 6321 and a spiral connection pipe 6322. The branch pipe body 6321 is disposed through the side wall of the upper top plate 4, and both ends of the spiral connection pipe 6322 are respectively connected to the connecting main pipe 631 and the branch pipe body 6321, and the pipeline axis of the spiral connection pipe 6322 is spiral, and the spiral connection pipe 6322 is disposed at an end toward the branch pipe body 6321 and is inclined to the axis of the branch pipe body 6321.

[0048] Preferably, the branch pipe body 6321 and the heat dissipation branch pipe 633 are both galvanized pipes to achieve better thermal conductivity. The spiral connection pipe 6322 is a ppr pipe for easy processing and forming. The spiral connection pipe 6322 and the branch pipe body 6321 are threadedly connected through a water pipe connector. The spiral connection pipe 6322 can guide the cooling water to form a spiral shape, thereby increasing the impact force of the water flow on the pipe wall. Since the cooling water absorbs the heat of the upper top plate 4 and heats up during the weighing process, the heated cooling water is more likely to form scale. The scale formed on the pipe wall can be reduced by the water flow impacting the pipe wall.

[0049] Reference Figure 2 and Figure 3 A filter assembly 7 is provided in the water tank 61, and the filter assembly 7 includes a filter sheet 71 provided along the cross section of the water tank 61, and the filter sheet 71 is located below the water inlet end of the water pump 62 to filter the coolant entering the water pump 62. The filter sheet 71 can be made of water filter cotton to filter the scale washed off the pipe wall and the impurities in the cooling water.

[0050] The water tank 61 is provided with an installation opening 611 on the upper end surface, and a baffle 64 is hinged on the upper end surface of the water tank 61 to close the installation opening 611. The filter assembly 7 also includes a connecting frame 72, a mounting net 73 and a connecting rod 74. The mounting net 73 is fused into the connecting frame 72 to form a mounting groove 75 for the filter 71 to be installed. The connecting frame 72 is hinged to the inner wall of the water tank 61 at both sides, and the two ends of the connecting rod 74 are respectively hinged to the connecting frame 72 and the baffle 64. The water tank 61 is integrally provided with a positioning plate 612 on the inner wall, and the positioning plate 612 abuts against the upper end of the filter 71 away from the installation opening 611.

[0051] The mounting net 73, the connecting frame 72 and the connecting rod 74 can all be made of corrosion-resistant plastic materials, which can reduce impurities generated by material aging while supporting the filter sheet 71, so as to ensure the use effect of long-term immersion in water.

[0052] When the baffle 64 rotates upward, the connecting rod 74 drives one end of the connecting frame 72 to rotate close to the installation opening 611. When the baffle 64 is located at the position of closing the installation opening 611, the connecting rod 74 drives the connecting frame 72 to rotate to a horizontal position, and the end of the connecting frame 72 and the filter sheet 71 away from the installation opening 611 abuts against the lower end of the positioning plate 612.

[0053] Reference Figure 3and Figure 4 A spring buckle 65 is provided on the side wall of the baffle plate 64 away from the hinge axis, and a slot 613 for the spring buckle 65 to be inserted into is opened in the water tank 61 near the baffle plate 64 .

[0054] The spring buckle 65 includes a block 651 and a support spring 652. The baffle 64 is provided with a slide groove 641 at the upper end for the block 651 to slide. The two ends of the support spring 652 are respectively in contact with the inner wall of the slide groove 641 and one end of the block 651. The support spring 652 has a tendency to drive the block 651 to approach the slot 613 in a natural state. The support spring 652 is a compression spring. The block 651 is integrally provided with a toggle plate 653 on the side away from the inner bottom surface of the slide groove 641.

[0055] The implementation principle of a high temperature resistant weighing device in the embodiment of the present application is:

[0056] During use, the ladle filled with molten steel is lifted by a crane and placed on the upper pressure plate 51. The overall weight of the ladle can be read after the reading of the weighing sensor 3 stabilizes. At the same time, the water pump 62 pumps water into the cooling water pipe 63 to absorb the heat of the upper top plate 4 and reduce the heat conducted to the weighing sensor 3. The water flows through the bottom plate 1 to dissipate heat and then returns to the water tank 61 to form a circulation, so as to reduce the influence of heat on the weighing accuracy of the weighing sensor 3.

[0057] During the water circulation process, water flows through the spiral connecting pipe 6322 into the branch pipe body 6321, flushing the inner wall of the branch pipe body 6321 to reduce the scale generated by the water being heated during the heat absorption process. A filter sheet 71 is provided in the water tank 61 to filter the scale, reduce the scale entering the heat absorption branch pipe 632 through the water pump 62, and at the same time, the scale can be concentrated in the water tank 61 for convenient unified cleaning.

[0058] During long-term use, the staff can open the baffle 64 to rotate the filter 71 along with the connecting frame 72 to a position close to the installation opening 611 , and replace the filter 71 through the installation opening 611 .

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high temperature resistant weighing device, characterized in that: The invention comprises a bottom plate (1), a mounting seat (2), a weighing sensor (3) and an upper top plate (4); the mounting seat (2) is fixedly connected to the upper end surface of the bottom plate (1); the weighing sensor (3) is mounted in the mounting seat (2); the upper top plate (4) is fixedly connected to the upper end of the weighing sensor (3) to separate the weighing object and the weighing sensor (3); a cooling assembly (6) is also arranged in the mounting seat (2); the cooling assembly (6) comprises a water tank (61), a water pump (62) and a cooling water pipe (63); the two ends of the water pump (62) are respectively connected to the water tank (61) and the cooling water pipe (63) to pump the coolant in the water tank (61) into the cooling water pipe (63); the cooling water pipe (63) is connected to the water tank (61) at one end away from the water pump (62); and the cooling water pipe (63) is passed through the side wall of the upper top plate (4) to absorb the heat of the upper top plate (4).

2. A high temperature resistant weighing device according to claim 1, characterized in that: The cooling water pipe (63) comprises a connecting main pipe (631) and a heat absorbing branch pipe (632). There are a plurality of heat absorbing branch pipes (632). One end of the connecting main pipe (631) is connected to the water outlet of the water pump (62) and is connected to the side wall and connected to one end of a plurality of heat absorbing branch pipes (632). The plurality of heat absorbing branch pipes (632) are all arranged on the side wall of the upper top plate (4) to absorb the heat of the upper top plate (4).

3. A high temperature resistant weighing device according to claim 2, characterized in that: The plurality of heat absorbing branch pipes (632) each comprises a branch pipe body (6321) and a spiral connecting pipe (6322); the branch pipe body (6321) is arranged through the side wall of the upper top plate (4); two ends of the spiral connecting pipe (6322) are respectively connected to the connecting main pipe (631) and the branch pipe body (6321); the axis of the spiral connecting pipe (6322) is spiral-shaped, and one end of the spiral connecting pipe (6322) facing the branch pipe body (6321) is inclined relative to the axis of the branch pipe body (6321).

4. A high temperature resistant weighing device according to claim 2, characterized in that: The cooling water pipe (63) further comprises a plurality of heat dissipation branch pipes (633), both ends of which are respectively connected to the heat absorption branch pipe (632) and the water tank (61), and the plurality of heat dissipation branch pipes (633) are all arranged through and abut against the bottom plate (1).

5. A high temperature resistant weighing device according to any one of claims 1 to 4, characterized in that: A filter assembly (7) is arranged in the water tank (61), and the filter assembly (7) comprises a filter sheet (71) arranged along the cross section of the water tank (61). The filter sheet (71) is located below the water inlet end of the water pump (62) to filter the coolant entering the water pump (62).

6. A high temperature resistant weighing device according to claim 5, characterized in that: The water tank (61) is provided with a mounting opening (611) on the upper end surface, and a baffle (64) is hingedly connected to the upper end surface of the water tank (61) for closing the mounting opening (611). The filter assembly (7) further comprises a connecting frame (72), a mounting net (73) and a connecting rod (74). The mounting net (73) is arranged in the connecting frame (72) to form a mounting groove (75) for the filter plate (71) to be installed. The connecting frame (72) is hingedly connected to the inner wall of the water tank (61) at the side wall. The two ends of the connecting rod (74) are respectively hingedly connected to the connecting frame (72) and the baffle (64). When the baffle (64) rotates upward, the connecting rod (74) drives one end of the connecting frame (72) to rotate to a position close to the mounting opening (611).

7. A high temperature resistant weighing device according to claim 6, characterized in that: The water tank (61) is provided with a positioning plate (612) on the inner wall, and the positioning plate (612) abuts against the upper end of the filter plate (71) away from the installation opening (611).

8. A high temperature resistant weighing device according to claim 6, characterized in that: The baffle (64) is provided with a spring buckle (65) at a side wall away from the hinge axis, and the water tank (61) is provided with a slot (613) for the spring buckle (65) to be inserted into, near the baffle (64).

9. A high temperature resistant weighing device according to claim 8, characterized in that: The spring buckle (65) comprises a card block (651) and a support spring (652); a slide groove (641) for the card block (651) to slide is provided at the upper end of the baffle plate (64); two ends of the support spring (652) respectively abut against the inner side wall of the slide groove (641) and one end of the card block (651); the support spring (652) has a tendency to drive the card block (651) to approach the card groove (613) in a natural state; and a toggle plate (653) is provided on the side of the card block (651) away from the inner bottom surface of the slide groove (641).

10. A high temperature resistant weighing device according to claim 2, characterized in that: The plurality of heat absorbing branch pipes (632) are evenly spaced apart along the width direction of the upper top plate (4).

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