Dividing device for building sand sample
By designing a sand sample reduction device for construction, the sand sample is evenly divided into equal parts using mechanized operation, which solves the problems of low efficiency and low accuracy of manual quartering method, and realizes efficient and accurate sand sample reduction.
Patent Information
- Application Number
- CN202520168035.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-24
AI Technical Summary
In existing technologies, the manual quartering method for testing construction sand samples is inefficient, inaccurate, and labor-intensive, and cannot effectively guarantee the representativeness and uniformity of the samples.
A device for dividing sand samples for construction was designed, including a fixed shaft, a cylinder, a sand outlet, a divider, and a baffle. The device divides the sand sample into equal parts through mechanized operation, reducing manual operation.
It improves the efficiency and accuracy of sand sample reduction, reduces the workload of testers, and ensures the uniformity and representativeness of the samples.
Smart Images
Figure CN223841578U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing technology for building sand, and in particular to a device for reducing the size of building sand samples. Background Technology
[0002] Sand, as one of the most important building materials for preparing concrete and mortar, must be tested for harmful impurities and its particle size distribution before use. In practice, the amount of sand used in a construction project is extremely large, and the testing of harmful impurities and particle size distribution can only be carried out by selecting a limited number of representative samples. To ensure that the selected samples are representative, homogeneous, and stable, sample reduction is necessary. The "Standard for Quality and Testing Methods of Sand and Stone for Ordinary Concrete" (JGJ52-2006) specifies a manual quartering method for sample reduction. This method involves placing the test sample on a flat plate, mixing it evenly while it is still damp, and piling it into a disc about 20 mm thick. Then, the disc is divided into four roughly equal parts along two perpendicular diameters. The two diagonally opposite parts are taken, mixed again, piled into a disc again, and divided into four parts again. This process is repeated until the required amount for the test is obtained.
[0003] As can be seen from the above methods, the manual quartering reduction method places high demands on the experimenter's subjective perception, involves tedious and repetitive labor, and has low work efficiency, thus affecting the progress and accuracy of the experiment. Therefore, there is an urgent need for a sand sample reduction device that can replace simple and repetitive manual labor with a mechanical device. Utility Model Content
[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a device for reducing the size of a sand sample for construction, including a fixed shaft, a cylinder rotatably connected to the outside of the fixed shaft, a rotating handle fixedly connected to the outer wall of the cylinder, and several sand outlet gates fixedly installed on the bottom surface of the cylinder. The inner surfaces of the several sand outlet gates are sequentially provided with slot 1, slot 2, and slot 3. Circular baffle 1, circular baffle 2, and circular baffle 3 are respectively engaged with slot 1, slot 2, and slot 3. Dividers 1, 2, 3, and 4 for dividing the sand sample into equal parts are respectively engaged at the top of the cylinder, the circular baffle 1, the circular baffle 2, and the circular baffle 3.
[0005] Preferably, the bottom of the fixed shaft is circumferentially fixed with four support legs.
[0006] Preferably, there are four sand outlet doors, and the four sand outlet doors form a complete circle.
[0007] Preferably, one end of the sand outlet door is fixedly installed to the inner wall of the cylinder via a hinge, and the other end of the sand outlet door is fixedly connected to a pair of buckles. The outer wall of the cylinder is provided with a bracket at a position corresponding to the buckles. The buckles and the brackets are adapted to each other, and the buckles and the brackets are detachably connected by a locking pin.
[0008] Preferably, the bottom of the inner wall of the cylinder is provided with an installation hole, and the hinge is fixedly installed in the installation hole.
[0009] Preferably, the first, second, third and fourth dividers have the same structure but different diameters. Each of them includes a top cover and four longitudinal baffles. The four longitudinal baffles are fixedly installed on the bottom surface of the top cover and are used to evenly separate the sand sample.
[0010] Preferably, the top cover has a circular hole at its center, which is adapted to the fixed shaft.
[0011] Preferably, a nut is detachably connected to the top surface of the fixed shaft, and the nut is used to press the top cover.
[0012] The present invention discloses the following technical effects: The present invention uses a mechanical device to replace the simple and repetitive manual reduction, which can reduce the workload and labor intensity of the test personnel; and can improve the working efficiency of sand sample reduction and improve the accuracy of sand sample reduction test. Attached Figure Description
[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the sand outlet door of this utility model;
[0016] Figure 3 This is a schematic diagram of the card slot structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the divider of this utility model;
[0018] Figure 5 The diagram shows the structure of dividers two, three, and four of this utility model.
[0019] Figure 6 This is a schematic diagram of the structure of circular baffles one, two, and three of this utility model;
[0020] In the diagram: 1. Support leg; 2. Fixed shaft; 3. Cylinder; 4. Rotating handle; 5. Slot 1; 6. Slot 2; 7. Slot 3; 8. Sand outlet door; 9. Buckle; 10. Seat; 11. Hinge; 12. Mounting hole; 13. Nut; 14. Circular partition 1; 15. Circular partition 2; 16. Circular partition 3; 17. Divider 1; 18. Divider 2; 19. Divider 3; 20. Divider 4; 21. Top cover; 22. Longitudinal partition; 23. Locking pin. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Reference Figures 1-4 As shown, this embodiment provides a device for dividing a sand sample for construction, including a fixed shaft 2, a cylinder 3 rotatably connected to the outside of the fixed shaft 2, a rotating handle 4 fixedly connected to the outer wall of the cylinder 3, and several sand outlet gates 8 fixedly installed on the bottom surface of the cylinder 3. The inner surfaces of the several sand outlet gates 8 are sequentially provided with a slot 1 5, a slot 2 6, and a slot 3 7. The slots 1 5, 2 6, and 3 7 are respectively connected to circular baffles 1 14, 2 15, and 3 16. The tops of the cylinder 3, the circular baffles 1 14, 2 15, and 3 16 are respectively connected to dividers 1 17, 2 18, 3 19, and 4 20 for dividing the sand sample into equal parts.
[0024] The working process of this embodiment is as follows:
[0025] 1. First, put the bottom capacity device, consisting of cylinder 3, rotating handle 4, and sand outlet 8, onto fixed shaft 2, and check whether each sand outlet 8 at the bottom is completely closed and tightened.
[0026] 2. First division: First, pour all the sand to be divided into the capacity device installed on the fixed shaft 2. Then, hold the rotating handle 4 on the cylinder 3 and rotate the entire cylinder 3. It can be rotated clockwise and counterclockwise multiple times to make the sand in the cylinder 3 completely dispersed and spread evenly on the bottom of the container. Then, press the divider 17 on the spread sand to divide the sand in the cylinder 3 into four equal parts. In order to maintain the stability of the bottom of the cylinder 3, only one sand outlet 8 can be opened to take out sand at a time. After taking out the sand, immediately close and lock the sand outlet 8, and then open the other sand outlet 8 until all the sand in the cylinder 3 flows out along the sand outlet 8. Mark the sand flowing out of each sand outlet 8 to prepare for the second division.
[0027] 3. Second Reduction: First, snap the circular baffle plate 14 into the corresponding size slot 5. Then, mix the sand taken from the two diagonally symmetrical sand outlets 8 during the first reduction and pour it into the circular space formed by the snapping of the circular baffle plate. Then, hold the rotating handle 4 on the cylinder 3 and rotate the entire cylinder 3. It can be rotated clockwise and counterclockwise multiple times to make the sand inside completely dispersed and spread evenly at the bottom of the entire capacity device. Then, press the divider 18 on the spread sand and divide the sand inside the cylinder 3 into four equal parts through the divider 18. Finally, open the sand outlets 8 below. The sand in the cylinder 3 flows out along the sand outlets 8. Mark the sand flowing out of each sand outlet 8 to prepare for the third reduction.
[0028] 4. Repeat the process of step 3: install circular baffle 2 15, circular baffle 3 16, and divider 3 19 and divider 4 20 according to their corresponding dimensions, and set the slots 1 5, slot 2 6 and slot 3 7 at equal intervals from the outside to the inside. Compare with the operation process of the second reduction, and complete the third and fourth reduction of sand respectively until the reduced sand sample meets the test requirements.
[0029] This invention replaces simple and repetitive manual reduction with a mechanical device, which can reduce the workload and labor intensity of test personnel; and can improve the efficiency of sand sample reduction and the accuracy of sand sample reduction test.
[0030] The design was further optimized by adding four support legs 1 circumferentially fixed to the bottom of the fixed shaft 2. The four support legs 1 provide good support and fixation, maintaining structural stability.
[0031] The design was further optimized so that there are four sand outlet gates 8, which form a complete circle. The sand outlet gates 8 have a fan-shaped structure, which can form a complete circle to prevent sand leakage.
[0032] The design is further optimized. One end of the sand outlet door 8 is fixedly installed to the inner wall of the cylinder 3 via a hinge 11, and the other end of the sand outlet door 8 is fixedly connected to a pair of buckles 9. A corresponding seat 10 is provided on the outer wall of the cylinder 3, and the buckles 9 and seat 10 are compatible. The buckles 9 and seat 10 are detachably connected by a locking pin 23. The hinge 11 facilitates fixing one end of the sand outlet door 8 for easy sand unloading; the buckles 9, seat 10, and locking pin 23 facilitate the locking and opening of the sand outlet door 8 for ease of use; the locking pin 23 consists of a screw and a nut, facilitating the locking and opening of the sand outlet door 8.
[0033] The design is further optimized by providing an installation hole 12 at the bottom of the inner wall of the cylinder 3, and fixing the hinge 11 inside the installation hole 12.
[0034] Further optimization of the scheme: Dividers 1 (17), 2 (18), 3 (19), and 4 (20) have the same structure but different diameters. Each includes a top cover 21 and four longitudinal baffles 22. The four longitudinal baffles 22 are fixedly installed on the bottom surface of the top cover 21 and are used to evenly separate the sand sample. The four longitudinal baffles 22 evenly divide the internal sand sample into four parts, and the longitudinal baffles 22 engage with corresponding slots at the bottom of the fan-shaped sand outlet gate 8.
[0035] The design is further optimized by providing a circular hole in the center of the top cover 21, which is compatible with the fixed shaft 2. The circular hole allows for easy connection with the fixed shaft 2, facilitating installation.
[0036] The design is further optimized by detachably connecting a nut 13 to the top surface of the fixed shaft 2. The nut 13 is used to press the top cover 21. The divider 17 is then pressed onto the flattened sand, and the nut 13 is tightened to fix the divider 17 in place for easy use.
[0037] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A device for reducing the size of a sand sample used in construction, characterized in that: The device includes a fixed shaft (2), a cylinder (3) is rotatably connected to the outside of the fixed shaft (2), a rotating handle (4) is fixedly connected to the outer wall of the cylinder (3), and several sand outlet gates (8) are fixedly installed on the bottom surface of the cylinder (3). The inner surfaces of the several sand outlet gates (8) are sequentially provided with slot 1 (5), slot 2 (6) and slot 3 (7). Slot 1 (5), slot 2 (6) and slot 3 (7) are respectively connected to circular baffle 1 (14), circular baffle 2 (15) and circular baffle 3 (16). The top of the cylinder (3), circular baffle 1 (14), circular baffle 2 (15) and circular baffle 3 (16) are respectively connected to dividers 1 (17), 2 (18), 3 (19) and 4 (20) for dividing the sand sample into equal parts.
2. The device for reducing the size of a building sand sample according to claim 1, characterized in that: The bottom of the fixed shaft (2) is circumferentially fixed with four support legs (1).
3. The device for reducing the size of a building sand sample according to claim 1, characterized in that: The number of sand outlet gates (8) is 4, and the 4 sand outlet gates (8) form a complete circle.
4. The device for reducing the size of a building sand sample according to claim 1, characterized in that: One end of the sand outlet door (8) is fixedly installed to the inner wall of the cylinder (3) via a hinge (11), and the other end of the sand outlet door (8) is fixedly connected to a pair of buckles (9). The outer wall of the cylinder (3) is provided with a card seat (10) at a position corresponding to the buckle (9). The buckle (9) and the card seat (10) are adapted to each other, and the buckle (9) and the card seat (10) are detachably connected by a locking pin (23).
5. The device for reducing the size of a building sand sample according to claim 4, characterized in that: The inner wall of the cylinder (3) has an installation hole (12) at the bottom, and the hinge (11) is fixedly installed in the installation hole (12).
6. The device for reducing the size of a building sand sample according to claim 1, characterized in that: The first divider (17), the second divider (18), the third divider (19), and the fourth divider (20) have the same structure but different diameters. Their structures all include a top cover (21) and four longitudinal baffles (22). The four longitudinal baffles (22) are fixedly installed on the bottom surface of the top cover (21) and are used to evenly separate the sand sample.
7. The device for reducing the size of a building sand sample according to claim 6, characterized in that: The top cover (21) has a circular hole in the center, which is adapted to the fixed shaft (2).
8. The device for reducing the size of a building sand sample according to claim 6, characterized in that: The top surface of the fixed shaft (2) is detachably connected to a nut (13), which is used to press the top cover (21).