Constant-temperature water tank for apparent density test of gravel for concrete

Abstract

The utility model discloses a constant-temperature water tank for an apparent density test of broken stones for concrete. The device comprises a box body and is characterized in that a plurality of vertically arranged partition plates are arranged in the box body, a plurality of mesh holes are uniformly formed in the partition plates, the partition plates divide the inner space of the box body into a plurality of test slots capable of accommodating mesh baskets for tests, a cover plate is arranged at the top of the box body and at the upper part of each test slot, through holes are formed in the cover plates, and the mesh baskets are arranged in the through holes. A supporting frame is arranged at the top of the box body, a baffle is fixedly connected to the top of the supporting frame, a strip-shaped through hole is formed in the baffle and corresponds to the through hole in the cover plate, and an overflow opening is formed in the side wall of the box body. According to the utility model, the problems of few water tanks, few net baskets and few detection batches in the existing testing device are effectively solved, the apparent density test of multiple batches of macadam can be carried out in one day, the test efficiency is high, and the daily test requirements can be met.

Description

Technical Field

[0001] The utility model relates to a constant temperature water tank for testing the apparent density of crushed stone for concrete, belonging to the technical field of apparent density testing equipment. Background Art

[0002] As one of the most important construction materials in construction projects, the quality requirements of concrete (including the density, strength and durability of concrete) play a very important role in the functionality of building facilities and the artistic realization of architectural design. The quality of cement, sand, stone, etc., which are the basic raw materials of concrete, will have a profound impact on the quality of concrete. In the preparation process of ready-mixed concrete, the apparent density of crushed stone is an important parameter for the design of ordinary concrete mix proportions and the evaluation of the quality of coarse aggregate. How to correctly and quickly test the density of crushed stone is of great practical engineering significance for the rational application of crushed stone aggregate and the good workability of mixed concrete. The current national standard, "Construction Stone" GB / T14685-2022, has established clear standard parameters for the apparent density of pebbles and crushed stone used in ordinary concrete mixing, among which the apparent density of crushed stone is required to be not less than 2600kg / m 3 .

[0003] In existing technology, the jar method is the most commonly used test device for the apparent density of crushed stone for ordinary concrete. This method requires placing a mesh basket containing the sample in a constant-temperature water tank. However, existing devices for testing the apparent density of crushed stone for concrete have the following shortcomings: a limited number of water tanks and mesh baskets, insufficient number of routine test batches, and an inability to meet daily testing needs. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, the utility model provides a constant temperature water tank for concrete gravel apparent density test which has a simple structure, can carry out multiple tests at one time and can meet daily test needs.

[0005] The utility model is realized through the following technical scheme: a constant temperature water tank for testing the apparent density of gravel for concrete, comprising a box body, characterized in that: a plurality of vertically arranged partitions are provided in the box body, the partitions are evenly arranged with a plurality of mesh holes, the partitions divide the internal space of the box body into a plurality of test slots that can accommodate test baskets, the top of the box body is provided with a cover plate at the upper part of each test slot, the cover plate is provided with a through hole, the top of the box body is provided with a support frame, the top of the support frame is fixedly connected with a baffle, the baffle is provided with strip through holes, the strip through holes correspond to the through holes on the cover plate, and the side wall of the box body is provided with an overflow port.

[0006] In this utility model, by arranging a partition board with mesh holes inside the box body, the internal space of the box body is divided into multiple test slots. During the test, test wire baskets can be placed in each test slot for testing. Multiple wire baskets can be placed in one test, which can improve the test efficiency. The partition board with mesh holes can ensure the connection of each test slot inside the box body, ensure a constant temperature water bath, and at the same time, the test slots are isolated from each other by the partition board, reducing the influence on the test. The cover plate can be opened to place and take out the test wire baskets. The baffle is used to place the electronic balance. The strip-shaped through holes on the baffle and the through holes on the cover plate are used for the test suspension wires to pass through. The overflow port is used to maintain the water level. During the test, the wire basket is placed in the corresponding test slot, the electronic balance is placed on the baffle corresponding to the corresponding test slot, and the wire basket is hung under the corresponding electronic balance through a hook and a suspension wire.

[0007] Further, for the convenience of operation, the support frame is movably arranged on the top of the box body.

[0008] Further, for the convenience of positioning the support frame, L-shaped positioning blocks for positioning the support frame are arranged at the four corner positions of the top of the box body.

[0009] Further, the support frame is fixedly arranged on the top of the box body.

[0010] Further, for the convenience of observation, transparent observation windows are arranged on the front side wall of the box body corresponding to each test slot.

[0011] The beneficial effects of this utility model are as follows: The structure of this utility model is simple. By arranging a partition board with mesh holes inside the box body, the internal space of the box body is divided into multiple test slots. During the test, test wire baskets can be placed in each test slot for testing. Multiple wire baskets can be placed in one test, which can improve the test efficiency. This utility model effectively solves the problems of few water tanks, few wire baskets, and few detection batches in the existing test devices. It can conduct multiple batches of apparent density tests on crushed stones in one day, with high test efficiency, which can meet the daily test requirements, and can reduce equipment investment and test costs. Description of the Drawings

[0012] Figure 1 is the three-dimensional structure schematic diagram of this utility model;

[0013] Figure 2 is the top view schematic diagram of this utility model;

[0014] In the figure, 1. overflow port, 2. box body, 3. partition board, 4. wire basket, 5. strip-shaped through hole, 6. baffle, 7. support rod, 8. cover plate, 9. through hole, 10. temperature controller, 11. positioning block. Detailed Embodiments

[0015] The present utility model will be further described below by means of non-limiting embodiments in conjunction with the accompanying drawings:

[0016] As shown in the accompanying drawings, a constant temperature water tank for the apparent density test of crushed stones for concrete includes a cuboid-shaped box body 2, and a water storage space is provided inside the box body 2. A plurality of vertically arranged partitions 3 are fixedly arranged in the water storage space of the box body 2. A number of mesh holes are evenly arranged on the partition 3, and the partition 3 divides the water storage space inside the box body 2 into a plurality of test slots capable of accommodating the test wire baskets 4. At the top of the box body 2, a cover plate 8 is provided above each test slot. The cover plate 8 is in sealing cooperation with the top plate of the box body 2, and a through hole 9 is provided on the cover plate 8. A support frame is provided at the top of the box body 2. The support frame includes four support rods 7 respectively arranged at the four corner positions of the top of the box body 2. The tops of the four support rods 7 are fixedly connected with a baffle 6. A strip-shaped through hole 5 is provided on the baffle 6, and the strip-shaped through hole 5 is directly above the through hole 9 on the cover plate 8. An overflow port 1 is provided on the side wall of the box body 2 for maintaining the water level in the box, and a drain port (not shown in the figure) is provided at the bottom of the box body.

[0017] In the present utility model, the support frame can be fixedly arranged on the top of the box body 2. For the convenience of operation in the test, preferably, the support frame is movably arranged on the top of the box body 2. When it is necessary to operate inside the box body 2, the support frame can be moved to a position that does not interfere with the operation, and then moved back to the test position during the test. For the convenience of positioning the test position of the support frame, preferably, positioning blocks 11 are respectively fixedly arranged at the four corner positions of the top of the box body 2. The positioning blocks 11 are of an L-shaped structure. When the support frame is moved back, the four support rods of the support frame can be respectively matched with the corresponding positioning blocks 11 for positioning.

[0018] For the convenience of observing the test situation, preferably, a transparent observation window (the observation window is not shown in the accompanying drawings) is provided on the front side wall of the box body 2 corresponding to each test slot.

[0019] A heating device (not shown in the accompanying drawings) is further provided in the box body of the present utility model for heating the water in the water storage space of the box body 2. The heating device is generally arranged at the bottom of the water storage space in the box body; a temperature control device is also provided for adjusting the water temperature. The heating device and the temperature control device in the present utility model are both prior arts.

[0020] When using the present utility model to conduct the apparent density test of crushed stones for concrete, the wire basket 4 is placed in the corresponding test slot, the electronic balance is placed on the baffle 6 corresponding to the corresponding test slot, and the wire basket 4 is hung under the corresponding electronic balance through a hook and a suspension wire. The water temperature in the box can be controlled by the heating device and the temperature control device, and the water level can be maintained through the overflow port 1.

[0021] In the present utility model, test baskets for experiments can be placed in each test slot. Multiple test baskets can be placed in one experiment, which can improve the test efficiency.

[0022] The present utility model effectively solves the problems of few water tanks, few test baskets and few detection batches existing in the existing test devices. It can conduct the apparent density test of multiple batches of crushed stones in one day with high test efficiency, and can fully meet the daily test requirements.

[0023] Other parts in this embodiment are all prior arts and will not be elaborated here.

Claims

1. A constant temperature water tank for the apparent density test of crushed stones for concrete, comprising a box body, characterized in that: A plurality of vertically arranged partitions are provided inside the box body. A number of mesh holes are evenly arranged on the partitions. The partitions divide the internal space of the box body into a plurality of test slots that can accommodate test wire baskets. At the top of the box body, a cover plate is provided above each test slot. A through hole is provided on the cover plate. A support frame is provided at the top of the box body. A baffle is fixedly connected to the top of the support frame. A strip-shaped through hole is provided on the baffle, and the strip-shaped through hole corresponds to the through hole on the cover plate. An overflow port is provided on the side wall of the box body.

2. The constant temperature water tank for the apparent density test of crushed stones for concrete according to claim 1, characterized in that: The support frame is movably arranged on the top of the box body.

3. The constant temperature water tank for the apparent density test of crushed stones for concrete according to claim 2, wherein: L-shaped positioning blocks for positioning the support frame are provided at the four corner positions of the top of the box body.

4. The constant temperature water tank for the apparent density test of crushed stones for concrete according to claim 1, characterized in that: The support frame is fixedly arranged on the top of the box body.

5. The constant temperature water tank for the apparent density test of crushed stones for concrete according to claim 1 or 2 or 3 or 4, characterized in that: A transparent observation window is provided on the front side wall of the box body corresponding to each test slot.

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