Device for testing hardness of clay

Abstract

The utility model discloses a device for testing hardness of clay. Comprising a base (1), a stand column (2) installed on the base, a range finder installation frame (3) arranged on the stand column in a sleeving mode and located above the base, a range finder (4) installed on the range finder installation frame, a heavy hammer placing frame (5) arranged on the stand column in a sleeving mode and located above the range finder installation frame, a heavy hammer placing barrel (6) installed on the heavy hammer placing frame and a heavy hammer (7) capable of being placed in the heavy hammer placing barrel. And a mud containing disc (11) is arranged on the base (1). The device can be used for testing and comparing the hardness of the clay, effectively overcomes the defect that the hardness of the clay is judged by severely depending on experience, ensures that the hardness of the clay is judged more scientifically and normatively, and is particularly beneficial to clay preparation technology training and talent cultivation.

Description

Technical Field

[0001] This utility model belongs to the technical field of clay performance testing devices, specifically relating to a device for determining the softness and hardness of pottery clay. Background Technology

[0002] Making pottery requires first preparing clay, and then shaping it on a potter's wheel. During the clay preparation process, it's crucial to control the clay's consistency; clay that is too soft or too hard will be difficult to shape during throwing and will severely impact subsequent firing processes, leading to a higher scrap rate. This is especially important for Jianshui purple pottery, which involves carving and shading after the wet clay has dried to a certain extent; the control of the clay's consistency is paramount.

[0003] Current technologies typically employ the following methods to determine the hardness of clay: First, based on experience, experienced clay makers gently press the clay with their hands to judge whether the hardness is suitable. Second, a molding test is conducted, attempting to shape the clay into simple forms to see if it can be quickly molded with a smooth surface and does not collapse. Third, a tensile test is performed, gently pulling the clay; if there is no obvious breakage or the breakage surface is smooth, the clay is suitable.

[0004] The above methods all rely too much on the experience of clay makers. For school teaching and industry novices, there has always been a lack of a scientific and standardized way to test the softness and hardness of clay materials, which is not conducive to the training of talents or the standardization of clay material preparation technology. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a device for testing the hardness of clay materials, thereby standardizing clay material preparation techniques and facilitating training and talent development in clay material preparation.

[0006] The technical solution adopted by this utility model is as follows:

[0007] A device for testing the hardness of clay includes a base, a cylindrical column vertically mounted on the base, a rangefinder mounting frame fitted onto the column and located above the base, a rangefinder mounted on the rangefinder mounting frame, a weight placement frame fitted onto the column and located above the rangefinder mounting frame, a weight placement cylinder mounted on the weight placement frame, and a weight that can be placed inside the weight placement cylinder. The rangefinder mounting frame includes a rangefinder sleeve fitted onto the column and a rangefinder crossbar connected to the rangefinder sleeve, with the rangefinder mounted on the rangefinder crossbar. The weight placement frame includes a weight frame sleeve fitted onto the column and a weight crossbar connected to the weight frame sleeve, with the weight placement cylinder mounted on the weight crossbar. A clay-holding tray is placed on the base.

[0008] Furthermore, a pin is provided at the upper part of the weight placement cylinder, passing radially through the cylinder body, and a lifting ring is provided at the top center of the weight, with the lifting ring fitted onto the pin.

[0009] Furthermore, the column is a threaded column with external threads, and the inner holes of the rangefinder sleeve and the counterweight sleeve are both equipped with internal threads that match the threaded column.

[0010] Furthermore, locking nuts are respectively provided under the rangefinder sleeve and the counterweight sleeve.

[0011] Furthermore, the column is a smooth cylindrical surface, and the rangefinder sleeve and the counterweight sleeve are respectively equipped with positioning bolts that pass laterally through the sleeve wall.

[0012] Furthermore, the rangefinder is a laser rangefinder.

[0013] Furthermore, the top of the rangefinder is fitted onto the rangefinder crossbar and can slide laterally.

[0014] This invention allows for the preparation of clay into slabs, which are then placed on a base. A weight is fixed at a fixed height, and the weight is lowered, falling freely onto the clay slab and creating a dent. The weight is then removed, and the depth of the dent is measured using a rangefinder. By creating standard slabs from various commonly used clay mixes and conducting drop tests on each, recording the subsequent creative process and firing results for each clay, the optimal dent depth for each type of clay can be determined, thus assessing the suitability of the clay's hardness for testing.

[0015] This utility model is ingeniously designed, simple in structure, and easy to use. It effectively solves the problem of relying heavily on experience to judge the softness and hardness of clay materials, making the judgment of the softness and hardness of clay materials more scientific and standardized. It is particularly beneficial for training in clay material preparation technology and talent cultivation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 Top view;

[0018] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0019] Figure 4 This is a top view of the counterweight bar. Detailed Implementation

[0020] The contents of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 , Figure 2 As shown, an apparatus for testing the softness and hardness of clay includes a base 1, a cylindrical column 2 vertically mounted on the base, a rangefinder mounting bracket 3 mounted on the column and located above the base, a rangefinder 4 mounted on the rangefinder mounting bracket, a weight placement bracket 5 mounted on the column and located above the rangefinder mounting bracket, a weight placement cylinder 6 mounted on the weight placement bracket, and a weight 7 that can be placed inside the weight placement cylinder.

[0022] The rangefinder mounting bracket 3 includes a rangefinder sleeve 3a fitted on a column and a rangefinder crossbar 3b connected to the rangefinder sleeve, and the rangefinder 4 is mounted on the rangefinder crossbar;

[0023] The hammer placement frame 5 includes a hammer frame sleeve 5a fitted on the column and a hammer crossbar 5b connected to the hammer frame sleeve. The hammer placement cylinder 6 is installed on the hammer crossbar.

[0024] A pin 8 is provided at the upper part of the hammer placement cylinder 6, passing radially through the cylinder body. The top center of the hammer 7 has a lifting ring 7a, which is fitted onto the pin 8. The hammer placement cylinder 6 can be cylindrical or funnel-shaped with an enlarged upper opening, as shown in the figure, to facilitate the placement of the hammer 7. The lower straight section acts as a guide, guiding the hammer to fall vertically and preventing it from tilting during free fall. The hammer is a conical hammer as shown in the figure, with a stable center of gravity, and the lower cone can vertically strike the mud slab.

[0025] like Figure 4 As shown, a ring 5c ​​is welded to the outer section of the crossbar of the counterweight to support the counterweight placement cylinder 6. The lower part of the counterweight placement cylinder is inserted into the ring. To improve the stability of the ring, a connecting rod 5d can be welded between the ring and the crossbar.

[0026] The column can be as follows: Figure 1 The device shown employs a threaded post with external threads. The inner holes of both the rangefinder sleeve 3a and the counterweight sleeve 5a have internal threads that mate with the threaded post. The height of the entire rangefinder mounting frame 3 can be flexibly adjusted by rotating the rangefinder sleeve 3a; similarly, the height of the entire counterweight placement frame 5 can be flexibly adjusted by rotating the counterweight sleeve 5a. To ensure the stability of the rangefinder mounting frame and the counterweight placement frame, locking nuts 9 can be installed under both the rangefinder sleeve 3a and the counterweight sleeve 5a.

[0027] The column can also be as follows: Figure 3 The diagram shows a smooth cylindrical surface. In this case, positioning bolts 10 that pass through the sleeve wall laterally can be installed on the rangefinder sleeve 3a and the counterweight sleeve 5a, respectively. By tightening the positioning bolts to abut the column, the positioning of the rangefinder mounting frame and the counterweight placement frame can be achieved.

[0028] The rangefinder 4 of this invention uses a laser rangefinder, which provides accurate and convenient distance measurement. This embodiment uses a commercially available lightweight pulsed laser rangefinder. The top of the laser rangefinder can be fitted with a collar or sleeve, which can be mounted on the measuring crossbar 3b and slide laterally for easy horizontal position adjustment. The laser emitter of the laser rangefinder faces downwards.

[0029] A clay tray 11 is placed on the base 1 to hold the clay slab A made of the clay to be tested, and to limit the deformation of the boundary of the clay slab after it is hit by the heavy hammer, which would affect the accuracy of the test.

[0030] Using this invention, standard sizes for test clay slabs can be established first. For example, rectangular clay slabs can be used to standardize the length, width, and thickness. Circular clay slabs can also be used to standardize the diameter and thickness. Standard clay slabs are made from several commonly used clay formulas, such as the red, white, and black clays commonly used in Jianshui purple pottery, as well as various clays with different moisture contents. These are then made into standard-sized clay slabs and placed in the clay tray 11. Under the same test conditions (using the same weight and the same drop height), drop tests are performed. The drop test method involves pulling out the pin 8, allowing the weight 7 to fall freely. Guided by the weight placement tube 6, the weight strikes the clay slab A. The weight is removed, revealing the dent B on the clay slab. The rangefinder mounting bracket 3 is rotated, and the position of the rangefinder (laser rangefinder) is adjusted so that it is directly above the dent. Figure 3 As shown, a laser rangefinder is aimed at the apex of the pit and emits a laser beam to measure the depth C of the deepest part of the pit (the cone apex). Softer clays have deeper pits, while harder clays have shallower pits. The subsequent creative experience and firing results of each tested clay were recorded, with the clay showing better creative experience (e.g., easier to carve and fill) and a lower firing rejection rate used as the standard sample. When preparing clay again, the kneaded clay was made into standard clay pieces, and a drop hammer test was performed under the same conditions as the standard sample to measure the pit depth. This depth was compared with the pit depth data of the standard sample. If the pit depth of the test clay piece was significantly greater than that of the standard sample, the clay was too soft; if the pit depth of the test clay piece was significantly less than that of the standard sample, the clay was too hard and unqualified, requiring further kneading and adjustment of its moisture content.

[0031] This invention is particularly suitable for use as a teaching aid in ceramic technology education to explain and demonstrate to students how to control the hardness of clay. It is also suitable for less experienced personnel in actual production to better control the hardness of the prepared clay. It is highly practical.

Claims

1. A device for testing the consistency of clay, characterized in that, The system includes a base (1), a cylindrical column (2) mounted vertically on the base, a rangefinder mounting bracket (3) mounted on the column and located above the base, a rangefinder (4) mounted on the rangefinder mounting bracket, a weight placement bracket (5) mounted on the column and located above the rangefinder mounting bracket, a weight placement cylinder (6) mounted on the weight placement bracket, and a weight (7) that can be placed inside the weight placement cylinder. The rangefinder mounting bracket (3) includes a rangefinder frame sleeve (3a) mounted on the column and a rangefinder crossbar (3b) connected to the rangefinder frame sleeve. The rangefinder (4) is mounted on the rangefinder crossbar. The weight placement bracket (5) includes a weight frame sleeve (5a) mounted on the column and a weight crossbar (5b) connected to the weight frame sleeve. The weight placement cylinder (6) is mounted on the weight crossbar. A mud tray (11) is placed on the base (1).

2. A device for testing the hardness of clay according to claim 1, characterized in that A pin (8) is provided on the upper part of the weight placement cylinder (6) and passes through the cylinder radially. The top center of the weight (7) has a lifting ring (7a) which is fitted onto the pin (8).

3. The apparatus for testing the hardness of clay material according to claim 1 or 2, characterized in that, The column is a threaded column with external threads, and the inner holes of the rangefinder sleeve (3a) and the counterweight sleeve (5a) are both equipped with internal threads that match the threaded column.

4. A device for testing the hardness of clay according to claim 3, characterized in that Locking nuts (9) are respectively provided under the rangefinder sleeve (3a) and the counterweight sleeve (5a).

5. A device for testing the hardness of clay according to claim 1 or 2, characterized in that The column is a smooth cylindrical surface, and the rangefinder sleeve (3a) and the counterweight sleeve (5a) are respectively equipped with positioning bolts (10) that pass through the sleeve wall laterally.

6. A device for testing the hardness of clay according to claim 1 or 2, characterized in that The rangefinder (4) is a laser rangefinder.

7. A device for testing the hardness of clay according to claim 1 or 2, characterized in that The top of the rangefinder (4) is fitted onto the rangefinder crossbar (3b) and can slide laterally.

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