Water ash analysis device for national standard method

Abstract

The utility model discloses a national standard method-based water ash analysis device, which comprises a sampling mechanism, an upper weighing unit and a lower weighing unit, and is characterized in that the sampling mechanism is arranged on one side of the upper weighing unit and one side of the lower weighing unit and is used for transferring a crucible between the upper weighing unit and the lower weighing unit; the weighing end of the lower weighing unit is positioned in a constant temperature box, and a sealed drying box for cooling a crucible with a sample is arranged between the lower weighing unit and the upper weighing unit. According to the water-ash analysis device based on the national standard method, the analysis time can be saved, and meanwhile the accurate values of the water content and the ash content can be obtained.

Description

Technical Field

[0001] The present application relates to the technical field of analytical testing equipment, and particularly to a water-ash analysis device based on the national standard method. Background Art

[0002] At present, when measuring moisture and ash content by the national standard method of moisture and ash, it is necessary to keep the temperature constant at the target temperature for a long time, then place it in a dryer to cool for 0.5 h and then weigh it. Then, it is taken out after heating in a thermostatic furnace for a period of time, placed in a dryer to cool for 0.5 h and then weighed again, and the above operations are repeated until the mass difference between the previous and the next time does not exceed the specified value, which is the constant weight. Finally, the moisture and ash content of the sample are calculated. The traditional method uses a muffle furnace for heating, a drying tower for cooling, and manual operation for sample transfer weighing and result calculation. Due to the diversity of samples, the constant temperature time of different samples is different. During the whole testing process, manual operation is required to be on duty all the time. The sample measurement cycle is very long, resulting in very low manual testing efficiency, and it is very unsafe to transfer the crucible at high temperature.

[0003] In addition, most of the existing water-ash analysis devices use the thermogravimetric method. The sample is weighed at room temperature and the sample after constant temperature is weighed at high temperature. The moisture, ash content and loss on ignition rate of the sample are calculated through a buoyancy correction. Since the buoyancy of the sample at high temperature and room temperature is different, and the volume of the sample is constantly changing during the heating process, the actual volume cannot be obtained by the device, so the buoyancy correction can only obtain a simulated approximate value instead of the real value. Since it is a simulated approximate value, it is difficult to accurately measure samples with light sample mass, small moisture and ash content and samples with large moisture and ash content. In order to obtain a result closer to the real value by the thermogravimetric method, different buoyancy correction formulas need to be made for different samples, which will be very troublesome if the user needs to test samples with different types and different moisture and ash content values every day. In short, when using the instrument based on the thermogravimetric method to measure moisture and ash content, unattended operation can be achieved, the analysis time can be saved, and 24-hour analysis can be carried out, greatly improving the efficiency. However, this method is a simulated approximate result, and it is difficult to give accurate results for samples with small sample mass, small moisture and ash content and light residual weight, and the adaptability is greatly reduced.

[0004] How to achieve rapid and accurate detection of moisture and ash content is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] To solve the above technical problems, the present utility model provides a water-ash analysis device based on the national standard method, which can save the analysis time and obtain accurate values of moisture and ash content at the same time.

[0006] The technical solution provided by the present utility model is as follows:

[0007] A water-cement analysis device according to the national standard method includes a sampling mechanism, an upper weighing unit and a lower weighing unit. The sampling mechanism is arranged on one side of the upper weighing unit and the lower weighing unit for transferring a crucible between the upper weighing unit and the lower weighing unit. The weighing end of the lower weighing unit is located in a constant temperature box. A sealed drying box for cooling the crucible with the sample is provided between the lower weighing unit and the upper weighing unit.

[0008] Preferably, the apparatus further comprises a sample top platform cooperating with the sampling mechanism and used for transporting the crucible.

[0009] Preferably, the upper weighing unit includes an upper rotating lifting mechanism, an upper moving weighing mechanism and a turntable 1, the turntable 1 is arranged on the upper part of the upper rotating lifting mechanism, and the turntable 1 is provided with a plurality of placement positions 1 for placing crucibles.

[0010] Preferably, the lower weighing unit includes a lower rotating lifting mechanism, a lower moving weighing mechanism and a second turntable. The second turntable is arranged on the upper part of the lower rotating lifting mechanism and is located in a constant temperature box. The second turntable is provided with a plurality of placement positions for placing crucibles.

[0011] Preferably, the upper rotary lifting mechanism and the lower rotary lifting mechanism have the same structure, both including a lifting motor, a bracket, a cam part, a slide rail, a rotary motor and a shaft box. The lifting motor is arranged on the bracket and connected to the cam part for driving the cam part. The slide rail is arranged on the bracket. The cam part is connected to the shaft box for driving the shaft box to move up and down along the slide rail. The rotary motor is connected to the shaft box for driving the shaft on the shaft box to rotate. The shaft of the shaft box is provided with a shaft clamp for connecting to the support rod of turntable one and / or turntable two.

[0012] Preferably, the arrangement of several of the placement positions one is the same as that of the placement position two, and several of the placement positions one are arranged in a circular arrangement with the center of the turntable one as the center point. The number of arrangement rings of the placement position one is one or not less than two. When the number of arrangement rings of the placement position one is greater than two, the aperture of the inner layer placement position one is different from the aperture of the outer layer inner layer placement position one.

[0013] Preferably, the structures of the turntable 1 and the turntable 2 are the same.

[0014] Preferably, the upper movable weighing mechanism includes a balance 1, a balance moving part 1 and a weighing rod 1, and the lower movable weighing mechanism includes a balance 2, a balance moving part 2, an insulation part and a weighing rod 2; wherein, the end of the weighing rod 2 in the lower movable weighing mechanism is in a constant temperature box, and the insulation part is outside the constant temperature box.

[0015] Preferably, a sealed cover is provided on the sealed drying oven, a sample placing plate is provided inside the sealed drying oven, and a plurality of sample placing holes for placing crucibles are provided on the sample placing plate.

[0016] Preferably, the sampling mechanism includes an up-and-down telescopic unit, a horizontal telescopic unit, and a sampling fork. The horizontal telescopic unit is arranged at the upper end of the up-and-down telescopic unit, and the sampling fork is arranged at the end of the horizontal telescopic unit.

[0017] The present application has the following advantages over the prior art:

[0018] The water-cement analysis device of the national standard method of the present application is provided with a sampling mechanism, an upper weighing unit, and a lower weighing unit. The crucible with the sample is placed on the upper weighing unit. The upper weighing unit can rise to weigh the weight of the empty crucible and the weight of the sample by using the upper weighing unit. The sampling mechanism can move up and down and expand and contract to put the sampled crucible into the constant temperature oven to realize heating and constant temperature. During the heating process, the lower weighing unit weighs the weight of the sample in the crucible in real time to judge whether the sample reaches constant weight. After reaching constant weight, open the small door of the constant temperature oven and take out the crucible with the sample through the sampling mechanism and cool it in the sealed drying oven. After cooling, the sampling mechanism puts the crucible with the sample on the upper weighing unit again to weigh the residual water weight or residual ash weight value, so as to calculate the true values of moisture and ash content, and it can save analysis time and obtain accurate values of moisture and ash content at the same time. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the water-cement analysis device of the national standard method in the embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the upper rotary lifting mechanism in the embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the first turntable in the embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the lower moving weighing mechanism in the embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of the sealed drying oven in the embodiment of the present utility model;

[0025] Figure 6 This is a schematic structural diagram of the sampling mechanism in an embodiment of the present utility model;

[0026] Figure 7 for Figure 6 Top view of .

[0027] Reference numerals:

[0028] 1. Sampling mechanism; 11. Upper and lower telescopic units; 12. Horizontal telescopic unit; 13. Sampling fork; 2. Upper weighing unit; 21. Upper rotary lifting mechanism; 211. Lifting motor; 212. Bracket; 213. Cam section; 214. Slide rail; 215. Rotary motor; 216. Rotating shaft box; 2161. Rotating shaft clamp; 22. Upper mobile weighing mechanism; 221. Balance (I); 222. Balance moving part (I); 223. Weighing beam (I) ; 23. Turntable one; 231. Placement position one; 3. Lower weighing unit; 31. Lower rotating lifting mechanism; 32. Lower moving weighing mechanism; 321. Balance two; 322. Balance moving part two; 323. Heat insulation part; 324. Weighing rod two; 33. Turntable two; 331. Placement position two; 4. Crucible; 5. Constant temperature box; 6. Sealed drying box; 61. Sealed cover with lid; 62. Sample plate; 621. Sample hole; 7. Sample top table. DETAILED DESCRIPTION

[0029] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0030] like Figures 1-7 As shown, an embodiment of the present invention provides a water-cement analysis device according to the national standard method, including a sampling mechanism 1, an upper weighing unit 2, a lower weighing unit 3 and a top sample platform 7 that cooperates with the sampling mechanism 1 and is used to transport the crucible 4. The sampling mechanism 1 is arranged on one side of the upper weighing unit 2 and the lower weighing unit 3 and is used to transfer the crucible 4 between the upper weighing unit 2 and the lower weighing unit. The weighing end of the lower weighing unit 3 is in a constant temperature box 5, and a sealed drying box 6 for cooling the crucible 4 with the sample is provided between the lower weighing unit 3 and the upper weighing unit 2.

[0031] In this embodiment, the upper weighing unit 2 includes an upper rotating lifting mechanism 21, an upper moving weighing mechanism 22 and a turntable 23. The turntable 23 is arranged on the upper part of the upper rotating lifting mechanism 21, and the turntable 23 is provided with several placement positions 231 for placing crucibles.

[0032] In this embodiment, the lower weighing unit 3 includes a lower rotary lifting mechanism 31, a lower moving weighing mechanism 32, and a second turntable 33. The second turntable 33 is arranged on the upper part of the lower rotary lifting mechanism 31 and is located in the constant temperature box 5. A number of placement positions two 331 for placing crucibles are provided on the second turntable 33.

[0033] In this embodiment, the upper rotary lifting mechanism 21 and the lower rotary lifting mechanism 31 have the same structure, and both include a lifting motor 211, a bracket 212, a cam part 213, a slide rail 214, a slewing motor 215, and a rotating shaft box 216. The lifting motor 211 is arranged on the bracket 212 and is connected to the cam part 213 for driving the cam part 213. The slide rail 214 is arranged on the bracket 212. The cam part 213 is connected to the rotating shaft box 216 for driving the rotating shaft box 216 to move up and down along the slide rail 214. The slewing motor 215 is connected to the rotating shaft box 216 for driving the rotating shaft on the rotating shaft box 216 to rotate. A rotating shaft clamp 2161 for connecting with the support rods of the first turntable 23 and / or the second turntable 33 is provided on the rotating shaft of the rotating shaft box 216. The lifting motor 211 realizes the lifting of the first turntable 23 and / or the second turntable 33 through the cam part 213. The slewing motor 215 increases the torque through a high-precision synchronous pulley to realize accurate control of the slewing position.

[0034] In this embodiment, the arrangement modes of a number of placement positions one 231 and the placement positions two 331 are the same. The a number of placement positions one 231 are arranged in a circular layout with the center of the first turntable 23 as the center point. If the sample mass is small and the crucible diameter is small, the placement positions one 231 on the first turntable 23 can adopt an inner and outer ring layout mode, and the apertures of the inner layer placement positions one 231 are different from those of the outer layer placement positions one 231. If the sample mass is large and the crucible diameter is large, the placement positions one 231 can adopt a single ring layout. Since the rotation uses a closed-loop stepper motor, the first turntable 23 with different structures of the placement positions one 231 can be adopted for different applications.

[0035] In this embodiment, the first turntable 23 and the second turntable 33 have the same structure.

[0036] In this embodiment, the upper movable weighing mechanism 22 includes a first balance 221, a first balance moving portion 222, and a first weighing beam 223. The lower movable weighing mechanism 32 includes a second balance 321, a second balance moving portion 322, a heat-insulating portion 323, and a second weighing beam 324. The end of the second weighing beam 324 in the lower movable weighing mechanism 32 is located within the constant temperature chamber 5, while the heat-insulating portion 323 is located outside the constant temperature chamber 5. The first balance moving portion 222 enables the movement of the first balance 221, allowing the first balance 221 to weigh samples on the inner and outer rings of the turntable. The second balance moving portion 322 enables the movement of the second balance 222, allowing the second balance 222 to weigh samples on the inner and outer rings of the turntable. The heat-insulating portion 323 reduces the amount of heat from the constant temperature chamber 5 and heat radiation from the heat-insulating portion 323 reaching the second balance 321, thereby increasing the stability of the second balance 321.

[0037] In this embodiment, the sealed drying oven 6 is provided with a covered sealing hood 61. A sample plate 62 is located within the sealed drying oven 6. The sample plate 62 is provided with several sample holes 621 for placing the crucibles 4. The covered sealing hood 61 is closed for sealing during cooling and opened for sampling. A desiccant is placed within the sealed drying oven 61 to maintain internal dryness. Sample holes 621 on the sample plate 62 within the sealed drying oven 61 ensure that the crucibles 4 are placed in the correct position. A high-precision temperature probe is provided within the oven to facilitate timely removal after cooling. The sealed drying oven 61 can be moved left and right to ensure that crucibles can be placed in different rows of sample holes 621.

[0038] In this embodiment, the sampling mechanism 1 includes a vertical telescopic unit 11, a horizontal telescopic unit 12, and a sampling fork 13. The horizontal telescopic unit 12 is disposed at the upper end of the vertical telescopic unit 11, and the sampling fork 13 is disposed at the lower end of the horizontal telescopic unit 12. The vertical telescopic unit 11 and the horizontal telescopic unit 12 of the sampling mechanism 1 can transfer the crucible 4 between the turntable 1 23, the turntable 2 33, and the sealed drying oven 6 via the sampling fork 13.

[0039] In this embodiment, the crucible 4 containing the sample is placed on turntable 1 23. Turntable 1 23 is raised to rotate the crucible 4 with different inner and outer rings to directly above the scale bar 1 223. Turntable 1 23 is lowered to weigh the empty crucible 4 and the sample. The same method can be used to transfer the crucible 4 by placing it on the sample-loading platform 7. The sampling mechanism 1 can be moved up and down and extended to allow the sample to be placed on turntable 2 33 in the constant temperature box 5 for heating and constant temperature. During the heating process, the lower rotating lifting mechanism 31 and the lower moving weighing mechanism 33 measure the weight of the sample in the crucible 4 in real time to determine whether the sample has reached a constant weight. After constant weight is achieved, the small door of the constant temperature box 6 is opened, and the crucible 4 containing the sample is placed into a sealed drying oven 6 through the sampling mechanism 1 for cooling. Finally, the sampling mechanism 1 places the crucible 4 containing the sample on turntable 1 23 to weigh the residual water weight or the residual ash weight, thereby calculating the true value of the moisture and ash content.

[0040] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water-cement analysis device using the national standard method, characterized in that It includes a sampling mechanism (1), an upper weighing unit (2) and a lower weighing unit (3). The sampling mechanism (1) is arranged on one side of the upper weighing unit (2) and the lower weighing unit (3) for transferring the crucible (4) between the upper weighing unit (2) and the lower weighing unit (3). The weighing end of the lower weighing unit (3) is in the constant temperature box (5), and there is a sealed drying box (6) for cooling the crucible (4) with samples between the lower weighing unit (3) and the upper weighing unit (2).

2. The water-cement analysis device of the national standard method according to claim 1, characterized in that, It further includes a top sample table (7) that cooperates with the sampling mechanism (1) and is used for transporting the crucible (4).

3. The water-cement analysis device of the national standard method according to claim 1, characterized in that, The upper weighing unit (2) includes an upper rotary lifting mechanism (21), an upper moving weighing mechanism (22) and a first turntable (23). The first turntable (23) is arranged on the upper part of the upper rotary lifting mechanism (21), and there are several placing positions one (231) for placing the crucible on the first turntable (23).

4. The water-cement analysis device of the national standard method according to claim 3, characterized in that, The lower weighing unit (3) includes a lower rotary lifting mechanism (31), a lower moving weighing mechanism (32) and a second turntable (33). The second turntable (33) is arranged on the upper part of the lower rotary lifting mechanism (31) and is in the constant temperature box (5). There are several placing positions two (331) for placing the crucible (4) on the second turntable (33).

5. The water-cement analysis device of the national standard method according to claim 4, characterized in that, The upper rotary lifting mechanism (21) and the lower rotary lifting mechanism (31) have the same structure, and both include a lifting motor (211), a bracket (212), a cam part (213), a slide rail (214), a rotary motor (215) and a shaft box (216). The lifting motor (211) is arranged on the bracket (212) and is connected to the cam part (213) for driving the cam part (213). The slide rail (214) is arranged on the bracket (212). The cam part (213) is connected to the shaft box (216) for driving the shaft box (216) to move up and down along the slide rail (214). The rotary motor (215) is connected to the shaft box (216) for driving the shaft on the shaft box (216) to rotate. There is a shaft clamp (2161) on the shaft of the shaft box (216) for connecting with the support rod of the first turntable (23) and / or the second turntable (33).

6. The water-cement analysis device of the national standard method according to claim 4, characterized in that, The arrangement modes of several placing positions one (231) and placing positions two (331) are the same. Several placing positions one (231) are arranged in a circular form with the center of the first turntable (23) as the center point. The number of arrangement rings of the placing positions one (231) is one or not less than two. When the number of arrangement rings of the placing positions one (231) is greater than two, the aperture of the inner-layer placing position one (231) is different from that of the outer-layer placing position one (231).

7. The water-cement analysis device of the national standard method according to claim 6, characterized in that, The structures of the first turntable (23) and the second turntable (33) are the same.

8. The water-cement analysis device of the national standard method according to claim 4, characterized in that, The upper moving weighing mechanism (22) includes a balance one (221), a balance moving part one (222) and a weighing rod one (223), and the lower moving weighing mechanism (32) includes a balance two (321), a balance moving part two (322), a heat insulation part (323) and a weighing rod two (324); wherein, the end of the weighing rod two (324) in the lower moving weighing mechanism (32) is located in the constant temperature box (5), and the heat insulation part (323) is located outside the constant temperature box (5).

9. The water-cement analysis device of the national standard method according to any one of claims 1-8, characterized in that, The sealed drying box (6) is provided with a covered sealing cover (61), and a sample placing plate (62) is arranged in the sealed drying box (6). A plurality of sample placing holes (621) for placing crucibles (4) are arranged on the sample placing plate (62).

10. The water-cement analysis device of the national standard method according to any one of claims 1-8, characterized in that, The sampling mechanism (1) includes a vertical telescopic unit (11), a horizontal telescopic unit (12) and a sampling fork (13). The horizontal telescopic unit (12) is arranged at the upper end of the vertical telescopic unit (11), and the sampling fork (13) is arranged at the end of the horizontal telescopic unit (12).

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