Coal ash viscosity test ball pressing mold

Abstract

The utility model discloses a coal ash viscosity test ball pressing mold, and belongs to the technical field of coal property detection and analysis. The mold comprises a bottom plate, a middle plate and a ball pressing plate; the top surface of the bottom plate is provided with a groove body and a plugging port. The bottom face of the middle plate is connected with a fixing column, and the bottom of the fixing column is in insertion fit with the insertion opening. The middle plate is provided with vertically-through ball pressing assembly cavities, and the ball pressing assembly cavities correspond to the groove bodies in the bottom plate in a one-to-one mode. Punching heads are arranged at the bottom of the ball pressing plate, the bottoms of the punching heads are of inwards-concave arc-shaped structures, and the punching heads correspond to the ball pressing assembly cavities in a one-to-one mode. After the stamping head extends into the bottom in the cavity of the ball pressing assembly, the arc-shaped structure at the bottom of the stamping head and the groove body in the bottom plate are combined to form a coal ash ball structure; the pressed ash balls have the characteristics of uniform size, compact structure and high compressive strength, and the problems that the existing ash balls for testing the viscosity of the coal ash are different in size, loose in structure and easy to damage are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal property detection and analysis, in particular to a coal ash viscosity test ball pressing mold. Background Art

[0002] The viscosity-temperature characteristic of coal ash is primarily used to describe the relationship between the viscosity and temperature of the slag formed by coal ash at high temperatures. It is an important indicator for coal used for power generation and gasification. The national standard GB / T 31424-2015, "Method for Determination of Coal Ash Viscosity," specifies the steps for determining coal ash viscosity. Sample preparation requires that the coal ash be moistened with a dextrin solution and then formed into ash balls with a diameter of approximately 10 mm. These balls must then be air-dried or low-temperature oven-dried before use. Currently, the standard laboratory procedure involves moistening the ash sample and then manually kneading it. However, the ash balls produced in this manner present certain issues. First, they vary in size, and second, their structure is relatively loose, making them prone to jamming and breakage during subsequent pitching, impacting the safe operation of experimental equipment and the conduct of testing. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art, proposes a coal ash viscosity test ball pressing mold, and solves the problems that the existing coal ash viscosity test ash balls are of different sizes, loose structures and are easily damaged.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions.

[0005] A coal ash viscosity test ball pressing mold, comprising a base plate, an intermediate plate and a ball pressing plate; the top surface of the base plate is provided with a plurality of arc-shaped grooves and a plurality of plug interfaces; the bottom surface of the intermediate plate is connected to a plurality of fixing columns, the bottom of the fixing columns is a plug socket, the number of the plug sockets is equal to and matches the plug interfaces, and the base plate and the intermediate plate are detachably connected by inserting the plug sockets into the plug interfaces; the intermediate plate is provided with a plurality of ball pressing assembly cavities that pass through from top to bottom, and the ball pressing assembly cavities correspond one-to-one to the grooves on the base plate; a plurality of punching heads are provided at the bottom of the ball pressing plate, the bottom of the punching head is a concave arc-shaped structure, and the punching head corresponds one-to-one to the ball pressing assembly cavities; after the punching head extends into the bottom of the ball pressing assembly cavity, the arc-shaped structure at the bottom of the punching head and the grooves on the base plate are combined to form a coal ash ball structure.

[0006] Furthermore, the slots and the plug ports are evenly distributed on the bottom plate.

[0007] Furthermore, the plug interface and the socket are both square structures.

[0008] Furthermore, after the punch head is inserted into the bottom of the ball pressing assembly cavity, a space remains between the connection between the top of the punch head and the bottom surface of the ball pressing plate and the top surface of the intermediate plate.

[0009] Furthermore, the arc-shaped structure at the bottom of the punch head and the groove body on the bottom plate are combined to form a fly ash ball structure with a diameter of 10 mm.

[0010] Furthermore, the number of cavities of the trough body, the punch head and the ball pressing assembly are 9 each.

[0011] The beneficial effects of the present invention compared to the prior art are as follows:

[0012] The coal ash viscosity test ball pressing mold of the utility model can ensure the compactness of the ash balls through the three-part structure of the bottom plate, the middle plate and the ball pressing plate, and the ash balls are easy to demould after pressing.

[0013] The coal ash viscosity ball pressing mold can produce uniformly sized, compact ash ball samples, standardizing sample preparation and simplifying the operation process. The pressed balls are characterized by uniform size, compact structure, and high compressive strength, solving the problem of existing coal ash viscosity test balls with uneven size, loose structure, and easy breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the ball pressing mold for testing the coal ash viscosity of the utility model;

[0015] Figure 2 is a cross-sectional view of the base plate;

[0016] Figure 3 is a top view of the middle plate;

[0017] Figure 4 is a cross-sectional view of the ball pressure plate;

[0018] In the picture:

[0019] 1- bottom plate; 2- middle plate; 3- ball pressure plate; 4- trough body; 5- plug interface; 6- fixed column; 7- socket; 8- ball pressure assembly cavity; 9- punch head. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0021] See also Figures 1 to 4 This embodiment proposes a coal ash viscosity test ball pressing mold, including a bottom plate 1, an intermediate plate 2 and a ball pressing plate 3; the bottom plate 1, the intermediate plate 2 and the ball pressing plate 3 are all square plate structures.

[0022] The top surface of the bottom plate 1 is evenly provided with 9 arc-shaped slots 4 and 12 square plug-in ports 5 .

[0023] The bottom surface of the intermediate plate 2 is evenly connected with 12 fixed columns 6. The bottom of the fixed columns 6 is a square socket 7. The socket 7 corresponds to the socket 5 one-to-one and plugs in and fits together. The socket 7 is inserted into the socket 5 to make the bottom plate 1 and the intermediate plate 2 detachable. This structure is beneficial for later demolding on the one hand, and for cleaning the mold on the other hand. The intermediate plate 2 is provided with 9 cylindrical ball pressing assembly cavities 8 that pass through from top to bottom. The diameter of the inner cavity of the ball pressing assembly cavity 8 is slightly larger than the diameter of the groove body 4. In order to allow the structure at the bottom of the ball pressing plate 3 to smoothly extend into the ball pressing assembly cavity 8, in this embodiment, the height of the ball pressing assembly cavity 8 is about 30mm. The ball pressing assembly cavity 8 corresponds to the groove body 4 on the bottom plate 1 one-to-one.

[0024] Nine punching heads 9 are evenly arranged at the bottom of the ball pressing plate 3. The bottom of the punching head 9 is a concave arc-shaped structure, and the punching head 9 corresponds one-to-one to the ball pressing component cavity 8; after the punching head 9 extends into the bottom of the ball pressing component cavity 8, the arc-shaped structure at the bottom of the punching head 9 and the groove body 4 on the bottom plate 1 are combined into a coal ash ball structure, and the coal ash ball structure is a spherical structure with a diameter of 10 mm.

[0025] In order to ensure that the ash balls are easy to demold after pressing, the groove body 4 on the base plate 1 of this embodiment can be designed to be relatively shallow, so that the formed ash balls can be easily removed smoothly. In order to ensure the compactness of the ash balls, the arc-shaped structure at the bottom of the punch head 9 and the groove body 4 on the base plate 1 form a combined coal ash ash ball structure with a diameter of 10 mm, which can compact the coal ash raw material as much as possible.

[0026] Moreover, in this embodiment, after the punch head 9 is extended into the bottom of the ball pressing assembly cavity 8, there is space left between the top of the punch head 9 and the connection between the bottom surface of the ball pressing plate 3 and the top surface of the intermediate plate 2, so that the ball pressing plate 3 can be removed more conveniently after the pressing is completed.

[0027] The method for using the coal ash viscosity test ball pressing mold described in this embodiment is as follows:

[0028] Place the base plate 1 horizontally on the table, align the fixing column 6 at the lower part of the middle plate 2 with the socket 5 on the base plate 1, and insert the socket 7 into the socket 5 to make the base plate 1 and the middle plate 2 detachable. Load an appropriate amount of fly ash into the 9 ball pressing assembly cavities 8 respectively, then insert the punch head 9 on the ball pressing plate 3 from the top of the ball pressing assembly cavity 8, and press the ball pressing plate 3 down with force to squeeze the fly ash into shape to form fly ash return balls. Then remove the ball pressing plate 3, then remove the middle plate 2, and remove the 9 pressed ash balls.

[0029] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A ball pressing mold for testing coal ash viscosity, characterized in that: The invention comprises a bottom plate (1), an intermediate plate (2) and a ball pressing plate (3); the top surface of the bottom plate (1) is provided with a plurality of arc-shaped grooves (4) and a plurality of plug-in ports (5); the bottom surface of the intermediate plate (2) is connected with a plurality of fixing columns (6), the bottom of the fixing columns (6) is a plug-in seat (7), the number of the plug-in seats (7) and the plug-in ports (5) are equal and matched, and the bottom plate (1) and the intermediate plate (2) are detachably connected by inserting the plug-in seat (7) into the plug-in port (5); the intermediate plate (2) is provided with a plurality of fixing columns (6), the bottom of the fixing columns (6) is a plug-in seat (7), the number of the fixing columns (7) and the plug-in ports (5) are equal and matched, and the bottom plate (1) and the intermediate plate (2) are detachably connected by inserting the fixing columns (7) into the plug-in ports (5); the intermediate plate (2) is provided with a plurality of fixing columns (6), the bottom surface of the fixing columns (6) is connected with a plurality of fixing columns (6), the bottom of the fixing columns (6) is connected with the plug-in ports (5) A ball pressing assembly cavity (8) is provided which is connected from top to bottom, and the ball pressing assembly cavity (8) corresponds to the groove body (4) on the bottom plate (1) one by one; a plurality of punching heads (9) are provided at the bottom of the ball pressing plate (3), and the bottom of the punching head (9) is a concave arc-shaped structure, and the punching head (9) corresponds to the ball pressing assembly cavity (8) one by one; after the punching head (9) is inserted into the bottom of the ball pressing assembly cavity (8), the arc-shaped structure at the bottom of the punching head (9) and the groove body (4) on the bottom plate (1) are combined to form a coal ash ball structure.

2. A coal ash viscosity test ball pressing mold according to claim 1, characterized in that: The trough body (4) and the plug interface (5) are evenly distributed on the bottom plate (1).

3. The coal ash viscosity test ball pressing mold according to claim 1, characterized in that: The plug interface (5) and the plug socket (7) are both square structures.

4. The coal ash viscosity test ball pressing mold according to claim 1, characterized in that: After the punch head (9) extends into the bottom of the ball pressing assembly cavity (8), a space remains between the connection between the top of the punch head (9) and the bottom surface of the ball pressing plate (3) and the top surface of the intermediate plate (2).

5. The coal ash viscosity test ball pressing mold according to claim 1, characterized in that: The arc-shaped structure at the bottom of the punch head (9) and the groove body (4) on the bottom plate (1) are combined to form a fly ash ball structure in the shape of a sphere with a diameter of 10 mm.

6. The coal ash viscosity test ball pressing mold according to claim 1, characterized in that: The number of the trough body (4), the punch head (9) and the ball pressing assembly cavity (8) is 9.

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