Dissolving assembly for cement component determination and determination device

Abstract

The utility model discloses a dissolving assembly for cement component determination and a determination device, and relates to the field of detection instruments.The dissolving assembly comprises a dissolving cup, a pipeline unit and a pinch valve, and the pipeline unit comprises a first-section pipeline, a second-section pipeline and a three-way connector. Compressed gas emerges upwards from the liquid leakage opening of the dissolving cup so as to prevent deposition, meanwhile, the cement sample dissolving efficiency is improved, the dissolving assembly does not need manual solution transfer, the working efficiency can be improved, and the cement sample can be prevented from being deposited in the liquid leakage opening and a pipeline; the utility model further discloses a measuring device which comprises the sand core crucible, the weighing assembly and the dissolving assembly, and the sand core crucible can meet the testing standard and the large-capacity requirement and can be conveniently connected with other structures at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection instruments, in particular to a dissolution assembly and a determination device for cement component determination. BACKGROUND

[0002] According to the requirements of the national standard GB / T 12960-2019 for quantitative determination of cement components, after the cement is dissolved, it is poured into a sand core crucible for filtration and drying.

[0003] The existing technology has the following problems: 1. After the cement and the corresponding dissolving reagent are dissolved in the dissolution cup, the dissolved solution is manually poured into the sand core crucible for filtration and drying, which is low in work efficiency. Although some dissolution assemblies with pipelines exist in the prior art, which can transport the cement sample to a predetermined position after dissolution through the pipeline, such devices will cause the cement sample to deposit in the pipeline, which will cause pipeline blockage and measurement error; 2. The national standard clearly stipulates that the filter core of the filtration sand core crucible is a G4 sand core crucible with a diameter of 35-60 mm, and the volume of the existing sand core crucible of this type on the market is about 60 ml. However, the total volume of the dissolved solution and the cleaning solution during the experiment exceeds 200 ml. Therefore, how to ensure that the diameter of the filter core meets the requirements of the national standard and the volume of the sand core crucible meets the requirements is a technical problem to be solved. CONTENT OF THE INVENTION

[0004] The present application provides a dissolution assembly and a determination device for cement component determination, which can avoid pipeline blockage.

[0005] In a first aspect, the present application provides a dissolution assembly for cement component determination, which comprises a dissolution cup, a pipeline unit and a pinch valve.

[0006] The bottom of the dissolution cup is provided with a liquid leakage port.

[0007] The pipeline unit comprises a first section of pipeline, a second section of pipeline and a tee joint. One end of the first section of pipeline is in communication with the liquid leakage port, and the other end of the first section of pipeline is in communication with a first interface of the tee joint. A second interface of the tee joint is in communication with one end of the second section of pipeline, and a third interface of the tee joint is used for communication with an external compressed gas source.

[0008] The pinch valve is connected to the outer periphery of the second section of pipeline, and the second section of pipeline is configured as a flexible pipe. The pinch valve is used for clamping and releasing the second section of pipeline.

[0009] Preferably, the dissolution assembly further comprises a stirring unit arranged in the dissolution cup, and the stirring unit is used for stirring the substances in the dissolution cup.

[0010] Preferably, the stirring unit comprises a stirring sub, a rotating wheel and a stirring motor; the stirring sub is arranged in the dissolving cup; the rotating wheel is arranged below the dissolving cup; the rotating wheel is provided with a permanent magnet which is adsorbed to the stirring sub; the output shaft of the stirring motor is connected to the rotating wheel, and the rotating wheel is driven to rotate by the stirring motor.

[0011] In a second aspect, the embodiments of the present application provide a determination device for cement component determination, comprising a sand core crucible, a weighing assembly and a dissolving assembly; the sand core crucible is arranged on the weighing assembly, and the lower end of the sand core crucible is provided with a suction port; the other end of the second section of the dissolving assembly is communicated with the sand core crucible.

[0012] Preferably, the sand core crucible comprises a bottom cone section, a first constant diameter section, a transition section and a second constant diameter section which are connected in sequence; the inner diameter of the second constant diameter section is larger than that of the first constant diameter section; the bottom cone section is provided with the suction port; and the first constant diameter section is provided with a filter core.

[0013] Preferably, the weighing assembly comprises a weighing balance, a support rod and a weighing seat; the support rod is arranged vertically, and the two ends of the support rod are connected to the weighing balance and the weighing seat respectively; the weighing seat is sleeved on the outer circumference of the first constant diameter section of the sand core crucible, and the upper end of the weighing seat is in contact with the transition section in the height direction.

[0014] Preferably, the support rod and the weighing seat are detachably connected.

[0015] Preferably, the weighing assembly further comprises a liquid leakage prevention cap and a liquid leakage collection groove; the liquid leakage prevention cap is sleeved on the support rod, and the liquid leakage prevention cap is arranged in the height direction corresponding to the sand core crucible; the liquid leakage collection groove is arranged between the liquid leakage prevention cap and the weighing balance, and is used for collecting liquid; and the support rod passes through the liquid leakage collection groove upwardly.

[0016] Preferably, the liquid leakage prevention cap is conical, and the liquid leakage prevention cap is coaxially connected to the support rod; the conical liquid leakage prevention cap is used for guiding the liquid to the liquid leakage collection groove.

[0017] Preferably, the liquid leakage collection groove is provided with a liquid discharge port.

[0018] The dissolving assembly and the determination device of the present application have at least the following beneficial effects:

[0019] (1) The pipe unit of the dissolving assembly of the present application comprises a first pipe section, a second pipe section and a tee joint. Cement and related dissolving agents are dissolved in the dissolving cup. At this time, the pinch valve clamps the second pipe section to clamp and close the second pipe section. At the same time, compressed gas is introduced into the first pipe section through the third interface of the tee joint. The compressed gas enters the tee joint and then passes through the first pipe section to bubble up from the liquid leakage port of the dissolving cup. In the process of bubbling, the solution and the cement sample are prevented from entering the liquid leakage port, thereby preventing deposition. At the same time, the compressed gas bubbles at the bottom of the dissolving cup, which can accelerate the dissolution efficiency of the cement sample. After the dissolution is completed, the delivery of the compressed gas is stopped and the pinch valve is loosened to release the second pipe section. The dissolved substances pass through the second pipe section to the predetermined position. The dissolving assembly of the present application does not need manual transfer of the solution, which can improve the work efficiency and avoid deposition of the cement sample in the liquid leakage port and the pipe.

[0020] (2) The sand core crucible of the measuring device of the present application can receive the dissolved cement. The suction port at the bottom of the sand core crucible can be in communication with the external suction device. After the liquid in the sand core crucible is suctioned by vacuum suction, drying treatment is performed. The insoluble residue and the sand core crucible after drying are weighed by the weighing assembly, so as to achieve the purpose of measurement. BRIEF DESCRIPTION OF DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the present application. Moreover, the same reference numerals are used throughout the same components. In the drawings:

[0022] Figure 1 is a structural schematic view of the dissolving assembly of the present application;

[0023] Figure 2 is a vertical sectional view of the dissolving assembly of the present application;

[0024] Figure 3 is a structural schematic view of Figure 2 is an enlarged view of A in FIG. 5;

[0025] Figure 4 is a structural schematic view of the measuring device of the present application;

[0026] Figure 5 is a vertical sectional view of the sand core crucible;

[0027] Figure 6 is a structural schematic view of the weighing assembly;

[0028] Figure 7 is a schematic view of the weighing seat and the sand core crucible in the perspective view;

[0029] The explanation of the reference numerals is as follows:

[0030] 100, dissolving cup; 100a, liquid leakage port;

[0031] 200, pipeline unit; 210, first section of pipeline; 220, second section of pipeline; 230, tee joint;

[0032] 300, pinch valve;

[0033] 400, stirring unit; 410, stirring sub; 420, rotating wheel; 430, permanent magnet;

[0034] 500, sand core crucible; 500a, suction filter port; 510, bottom tapered section; 520, first constant diameter section; 530, transition section; 540, second constant diameter section; 550, filter core;

[0035] 600, weighing assembly; 610, weighing scale; 620, supporting rod; 630, weighing seat; 631, annular frame structure; 632, sleeve; 640, liquid leakage prevention cap; 650, liquid leakage collection groove; 650a, liquid discharge port;

[0036] 700, compressed air source;

[0037] 800, suction filtration device. DETAILED DESCRIPTION

[0038] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to explain the present application, and is not intended to limit the present application. The present application can be implemented without some of the specific details, which are well known to those skilled in the art. The following description of the embodiments is merely provided to give a better understanding of the present application by showing examples of the present application.

[0039] It should be noted that the terms such as first and second, etc., are merely intended to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Also, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the processes, methods, articles or devices including the elements.

[0040] Example 1:

[0041] like Figure 1 As shown, this embodiment discloses a dissolution assembly for cement composition determination. The dissolution assembly includes a dissolution cup 100, a pipeline unit 200, and a clamp valve 300. The pipeline unit 200 includes a first pipeline section 210, a second pipeline section 220, and a tee connector 230. The specific structure is as follows:

[0042] like Figure 1 As shown, the upper end of the dissolving cup 100 is configured as an open structure, and the lower end of the dissolving cup 100 is provided with a drain port 100a that connects to the interior of the dissolving cup 100. The interior of the dissolving cup 100 can be used to contain cement and related solvents, cleaning agents, etc.

[0043] like Figure 2 As shown, the first section of pipe 210 of pipe unit 200 can be a rigid pipe or a flexible pipe. The first section of pipe 210 is vertically arranged, with its upper end connected to the drain port 100a and its lower end connected to the first interface of the tee connector 230. The second section of pipe 220 is configured as a flexible pipe, meaning that the material of the second section of pipe 220 can be rubber, plastic, etc. One end of the second section of pipe 220 is connected to the second interface of the tee connector 230, and the other end of the second section of pipe 220 is connected to the sand core crucible 500. In this embodiment, it is preferable that the second section of pipe 220 and the sand core crucible 500 correspond vertically in the height direction. The third interface of the tee connector 230 is used to connect to an external compressed air source 700, which can be an existing compressor device.

[0044] like Figure 2 As shown, the clamp valve 300 is connected to the outer periphery of the second section of pipe 220. Since the second section of pipe 220 is configured as a flexible hose, the clamp valve 300 can clamp the second section of pipe 220 to block and seal its interior. When it is necessary to transport the dissolved cement sample to the sand core crucible 500 through the second section of pipe 220, the clamp valve 300 releases the second section of pipe 220 to allow the dissolved cement sample to flow through the second section of pipe 220 into the sand core crucible 500. In this embodiment, the clamp valve 300 can refer to the prior art, and the clamp valve 300 clamps or releases the outer periphery of the second section of pipe 220 through a clamp.

[0045] like Figure 2 and Figure 3 As shown, the dissolving assembly also includes a stirring unit 400 disposed within the dissolving cup 100. The stirring unit 400 can stir the cement sample within the dissolving cup 100 to accelerate the reaction and dissolution rate.

[0046] like Figure 3As shown, in some preferred embodiments, the stirring unit 400 comprises a stirring sub 410, a rotating wheel 420 and a stirring motor (not shown); the stirring sub is arranged in the dissolving cup 100 and moves in the dissolving cup 100 through the stirring sub 410, thereby realizing stirring of the solution; in some preferred embodiments, the stirring sub 410 is shaped as a structure with large ends and a thin middle, similar to a dumbbell; the thin middle part of the stirring sub 410 can avoid the stirring sub 410 from blocking and covering the liquid leakage hole 100a; on the other hand, the stirring sub 410 is made of metal and has no magnetism, avoiding the stirring sub 410 from adsorbing metal powder in the sample. The rotating wheel 420 is coaxially arranged below the dissolving cup 100 and can rotate around its axis; the rotating wheel 420 is provided with a permanent magnet 430, which is adsorptively connected with the stirring sub 410; the output shaft of the stirring motor is connected with the rotating wheel 420, and the stirring motor can drive the rotating wheel 420 to rotate around its axis; in this embodiment, the output shaft of the stirring motor is preferably connected with the rotating wheel 420 through a belt or a chain, thereby driving the rotating wheel 420 to rotate; when the rotating wheel 420 rotates, the permanent magnet 430 rotates with the rotating wheel 420; since the permanent magnet 430 is adsorptively connected with the stirring sub 410, the permanent magnet 430 can drive the stirring sub 410 to move, thereby realizing the stirring function.

[0047] As shown in Figure 3 The first section of pipe 210 of the pipe unit 200 vertically upwardly passes through the rotating wheel 420 and communicates with the liquid leakage hole 100a; the first section of pipe 210 is coaxially arranged with the rotating wheel 420, and the rotating wheel 420 does not contact the outer periphery of the first section of pipe 210, avoiding mutual interference; in addition, the first section of pipe 210 and the rotating wheel 420 can also be rotatably connected through a bearing.

[0048] The working principle of the dissolving assembly of this embodiment is as follows:

[0049] I. The pinch valve 300 clamps the second section of pipe 220; the staff member adds the cement sample and related dissolving agent into the dissolving cup 100, starts the stirring sub 410 to stir the cement sample, and simultaneously introduces compressed gas into the first section of pipe 210 through the three-way joint 230; the compressed gas enters the first section of pipe 210 from the three-way joint 230 and upwardly bubbles out from the liquid leakage hole 100a of the dissolving cup 100, which can prevent the cement sample from depositing in the liquid leakage hole 100a and simultaneously accelerate the dissolving efficiency through bottom bubbling;

[0050] II. After the dissolving is completed, the compressed gas is stopped from being delivered, the pinch valve 300 releases the second section of pipe 220, and the dissolved substance is delivered through the second section of pipe 220 to the sand core crucible 500 for operations such as filtration, drying and weighing.

[0051] Embodiment two:

[0052] As Figure 4 shown in the figure, the second embodiment discloses a determination device for cement component determination, the determination device comprises a sand core crucible 500, a weighing assembly 600 and the dissolution assembly in the first embodiment, and the details are as follows:

[0053] As Figure 5 shown in the figure, the sand core crucible 500 comprises a bottom cone section 510, a first constant diameter section 520, a transition section 530 and a second constant diameter section 540 connected in sequence from bottom to top;

[0054] As Figure 5 shown in the figure, the bottom end of the bottom cone section 510 is provided with a suction port 500a, and an external suction device 800 draws liquid outward through the suction port 500a. The suction device 800 can refer to an existing vacuum pump or other existing air suction device.

[0055] As Figure 5 shown in the figure, the first constant diameter section 520 is in the shape of a cylinder, and the first constant diameter section 520 is vertically arranged. The lower end of the first constant diameter section 520 is connected to the large end port of the bottom cone section 510, and the inner diameter of the first constant diameter section 520 ranges from 35mm to 60mm (mm represents millimeter). A circular filter core 550 is arranged in the first constant diameter section 520, and the filter core 550 is horizontally arranged on the inner wall of the first constant diameter section 520. The filter core 550 is used for filtering insoluble residues.

[0056] As Figure 5 shown in the figure, the transition section 530 is in the shape of a horn. The upper end port of the transition section 530 is configured as a large end port, and the lower end port of the transition section 530 is configured as a small end port. The small end port of the transition section 530 is coaxially connected to the first constant diameter section 520, and the large end port of the transition section 530 is coaxially connected to the second constant diameter section 540.

[0057] As Figure 5 shown in the figure, the second constant diameter section 540 is in the shape of a cylinder, and the second constant diameter section 540 is vertically arranged. The upper end port of the second constant diameter section 540 is in communication with the lower end of the second section pipeline 220, and can receive the substances flowing out from the second section pipeline 220. In this embodiment, the inner diameter of the second constant diameter section 540 is greater than the inner diameter of the first constant diameter section 520. For example, the inner diameter of the second constant diameter section 540 is 1.5 to 4 times the inner diameter of the first constant diameter section 520.

[0058] In this embodiment, it is preferred that the bottom cone section 510, the first constant diameter section 520, the transition section 530 and the second constant diameter section 540 are integrally formed.

[0059] As Figure 5As shown, in the embodiment, the inner diameters of the first constant-diameter section 520 and the second constant-diameter section 540 of the sand core crucible 500 are different, the inner diameter of the first constant-diameter section 520 is smaller, which can provide a mounting position for the filter core 550, and the inner diameter of the first constant-diameter section 520 is strictly controlled within the range required by the national standard, the inner diameter of the second constant-diameter section 540 is larger, which can meet the volume requirement required by the test, avoid solution overflow, and because the stepped structure is formed between the first constant-diameter section 520 and the second constant-diameter section 540, the stepped structure can facilitate the positioning of the sand core crucible 500 matched to be placed on the weighing seat 630 of the weighing assembly 600 and matched to be placed in the positioning hole of other external structures, for example, the first constant-diameter section 520 of the sand core crucible 500 can be coaxially inserted into the positioning hole, and the outer diameter of the second constant-diameter section 540 is larger than the inner diameter of the positioning hole, so that the sand core crucible 500 cannot be separated downward from the positioning hole.

[0060] The dissolving assembly is located above the sand core crucible 500, and the second section of the pipeline 220 of the dissolving assembly is in communication with the second constant-diameter section 540 of the sand core crucible 500.

[0061] As shown in the figure, Figure 6 The weighing assembly 600 includes a weighing scale 610, a support rod 620, and a weighing seat 630; the weighing scale 610 is arranged directly below the sand core crucible 500, the support rod 620 is vertically arranged, the lower end of the support rod 620 is connected to the weighing scale 610, the upper end of the support rod 620 is connected to the weighing seat 630, the weighing seat 630 is sleeved on the outer circumference of the first constant-diameter section 520 of the sand core crucible 500, so as to limit the horizontal displacement of the sand core crucible 500, and the upper end of the weighing seat 630 is in contact with the transition section 530 of the sand core crucible 500 in the height direction, so that the weighing seat 630 supports and limits the sand core crucible 500 in the height direction.

[0062] As shown in the figure, Figure 7 In the embodiment, the weighing seat 630 can be positioned with the sand core crucible 500, and the weighing scale 610 can weigh the sand core crucible 500.

[0063] In some preferred embodiments, one side of the weighing seat 630 is provided with a mechanical device for transferring the sand core crucible 500, which can transfer the sand core crucible 500 from a turntable (not shown) to the weighing seat 630, or transfer the sand core crucible 500 from the weighing seat 630 to the turntable, so as to facilitate the turntable to drive the sand core crucible 500 to other workstations for other operations. The mechanical device of the embodiment can be a mechanical hand, a lifting device, or other existing mechanisms, which are not limited here.

[0064] As shown in the figure, Figure 7As shown, in some preferred embodiments, the upper end of the support rod 620 is detachably connected with the weighing seat 630, and the detachable connection can be magnetic connection or bolt clamping, for example: the weighing seat 630 includes a plurality of support rods connected to form an annular frame structure 631 and a sleeve 632 connected below the annular frame structure; the annular frame structure 631 is sleeved on the first constant diameter section 520 of the sand core crucible 500 and abuts against the transition section 530 of the sand core crucible 500 in the height direction; the upper end of the sleeve 632 is connected with the annular frame structure 631, the sleeve 632 is coaxially sleeved on the upper end of the support rod 620, and a threaded hole is arranged on the outer circumferential wall of the sleeve 632. A clamping bolt (not marked) is arranged in the threaded hole, and the clamping bolt can clamp the support rod 620 in the sleeve 632. When it is needed to separate the sleeve 632 from the support rod 620, the clamping bolt only needs to be loosened.

[0065] As shown in Figure 6 , the weighing assembly 600 further includes a liquid leakage prevention cap 640 and a liquid leakage collection groove 650; the liquid leakage prevention cap 640 is coaxially connected to the outer circumference of the support rod 620 and is located below the sand core crucible 500, wherein the projection of the liquid leakage prevention cap 640 in the height direction can completely cover the sand core crucible 500, so that the liquid leakage from the sand core crucible 500 can be blocked by the liquid leakage prevention cap 640, avoiding the influence of the liquid leakage on the weighing balance 610; the liquid leakage prevention cap 640, the liquid leakage collection groove 650 and the weighing balance 610 are sequentially arranged from top to bottom, the liquid leakage collection groove 650 covers the upper side of the weighing balance 610, and the support rod 620 coaxially penetrates the liquid leakage collection groove 650 upward, wherein the liquid leakage collection groove 650 is located directly below the liquid leakage prevention cap 640, and the projection of the liquid leakage collection groove 650 in the height direction completely covers the liquid leakage prevention cap 640, so that the liquid falling from the liquid leakage prevention cap 640 can be collected in the liquid leakage collection groove 650, avoiding the adverse effect of the liquid leakage on the weighing balance 610.

[0066] As shown in Figure 6 , in some preferred embodiments, the liquid leakage prevention cap 640 is conical, and the liquid leakage prevention cap 640 is coaxially connected to the support rod 620. When the liquid leakage drops downward to the upper surface of the liquid leakage prevention cap 640, the liquid leakage drops downward along the generatrix direction of the liquid leakage prevention cap 640.

[0067] As shown in Figure 6 , in some preferred embodiments, the liquid leakage collection groove 650 is provided with a liquid discharge port 650a, which facilitates the timely discharge of the collected liquid leakage outward, and the liquid discharge port 650a can be provided with a plug or a valve structure to control the opening and closing of the liquid discharge port 650a.

[0068] The working process of the measuring device of the second embodiment is as follows:

[0069] One, the cement sample and the related dissolving agent are placed in the dissolving cup 100 for stirring and dissolving, the compressed gas is introduced into the dissolving cup 100 through the three-way joint 230, so as to avoid deposition and accelerate the dissolving rate;

[0070] Two, after the dissolving is completed, the pinch valve 300 is loosened, the dissolved solution flows into the sand core crucible 500, then the suction port 500a at the lower end of the sand core crucible 500 is connected with the external suction device 800, the suction work is started, after the suction is completed, the cleaning liquid is added for cleaning, in this process, the filter core 550 in the sand core crucible 500 filters the insoluble slag;

[0071] Three, after the suction is completed, the sand core crucible 500 is sent into the drying equipment together with the insoluble slag for heating and drying, after the drying is completed, the sand core crucible 500 is transferred to the weighing seat 630 for weighing.

[0072] The above is only a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A dissolution assembly for cement component determination, characterized by, The application relates to a dissolving assembly. The dissolving assembly comprises a dissolving cup (100) provided with a liquid leakage hole (100a) at the bottom; a pipeline unit (200) comprising a first pipeline section (210), a second pipeline section (220) and a tee joint (230); one end of the first pipeline section (210) is communicated with the liquid leakage hole (100a), the other end of the first pipeline section (210) is communicated with a first interface of the tee joint (230), a second interface of the tee joint (230) is communicated with one end of the second pipeline section (220), and a third interface of the tee joint (230) is used for being communicated with an external compressed gas source (700); and a pinch valve (300) is connected to the outer periphery of the second pipeline section (220), the second pipeline section (220) is configured as a hose, and the pinch valve (300) is used for clamping and releasing the second pipeline section (220). The dissolving assembly further comprises a stirring unit (400) arranged in the dissolving cup (100), and the stirring unit (400) is used for stirring substances in the dissolving cup (100). The stirring unit (400) comprises a stirring rod (410), a rotating wheel (420) and a stirring motor; the stirring rod (410) is arranged in the dissolving cup (100); the rotating wheel (420) is rotationally arranged below the dissolving cup (100); permanent magnets (430) are arranged on the rotating wheel (420) and are adsorptively connected with the stirring rod (410); and the output shaft of the stirring motor is connected with the rotating wheel (420), so that the rotating wheel (420) is driven to rotate by the stirring motor.

2. The dissolution assembly of claim 1, wherein, The application further relates to a sand core crucible (500), a weighing assembly (600) and the dissolving assembly of any one of claims 1 to 3; the sand core crucible (500) is arranged on the weighing assembly (600), and the lower end of the sand core crucible (500) is provided with a suction filter port (500a); and the other end of the second pipeline section (220) of the dissolving assembly is communicated with the sand core crucible (500).

3. The dissolution assembly of claim 2, wherein, The sand core crucible (500) comprises a bottom tapered section (510), a first constant-diameter section (520), a transition section (530) and a second constant-diameter section (540) which are sequentially connected; the inner diameter of the second constant-diameter section (540) is larger than that of the first constant-diameter section (520); the bottom tapered section (510) is provided with the suction filter port (500a); and a filter core (550) is arranged in the first constant-diameter section (520).

4. An assay device for cement component determination, characterized by The weighing assembly (600) comprises a weighing balance (610), a supporting rod (620) and a weighing seat (630); the supporting rod (620) is vertically arranged, and the two ends of the supporting rod (620) are respectively connected with the weighing balance (610) and the weighing seat (630); the weighing seat (630) is sleeved on the outer periphery of the first constant-diameter section (520) of the sand core crucible (500), and the upper end of the weighing seat (630) is in contact with the transition section (530) in the height direction.

5. The assay device of claim 4, wherein, The supporting rod (620) and the weighing seat (630) are detachably connected.

6. The assay device of claim 5, wherein, ​ 7. The assay device of claim 6, wherein, ​ 8. The assay device of claim 6, wherein, The weighing assembly (600) further comprises a liquid leakage prevention cap (640) and a liquid leakage collection groove (650); the liquid leakage prevention cap (640) is sleeved on the supporting rod (620), and the liquid leakage prevention cap (640) is arranged in a corresponding manner with the sand core crucible (500) in the height direction; the liquid leakage collection groove is arranged between the liquid leakage prevention cap (640) and the weighing balance (610) and is used for collecting liquid; the supporting rod (620) penetrates upward through the liquid leakage collection groove (650).

9. The assay device of claim 8, wherein, The liquid leakage prevention cap (640) is in a conical shape, the liquid leakage prevention cap (640) is coaxially connected to the supporting rod (620), and the conical liquid leakage prevention cap (640) is used for guiding liquid to the liquid leakage collection groove (650).

10. The assay device of claim 9, wherein, The liquid leakage collection groove (650) is provided with a liquid discharge port (650a).

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