Concrete curing box

Abstract

The utility model discloses a concrete curing box which comprises a water tank, a control box arranged on one side of the water tank and a test piece placing frame placed in the water tank during use. A tank cover capable of being opened and closed is arranged at the top of the water tank, a heating cavity is formed in the lower portion in the water tank, and a heating device is arranged in the heating cavity; a partition plate is arranged on one side in the water tank, and the lower end of the partition plate extends to the top of the heating cavity. Two sides of the partition plate are respectively used as a water inlet buffer cavity and a test piece curing cavity; the bottom of the water inlet buffer cavity is communicated with the heating cavity, and the top of the heating cavity is communicated with the test piece curing cavity; a water inlet pipe is arranged at the upper part of the water inlet buffer cavity; a floating ball valve is arranged at the end part, positioned in the water inlet buffer cavity, of the water inlet pipe; and the test piece placing rack is positioned in the test piece curing cavity. The water replenishing device has the advantages that the water replenishing device ensures that the temperature of the curing water at which the test piece is positioned does not fluctuate beyond a specified range in the water replenishing process.

Description

Technical Field

[0001] The utility model relates to the technical field of specimen curing equipment, in particular to a concrete curing box. Background Art

[0002] A concrete curing chamber is a device specifically designed to control and maintain the environmental conditions required for concrete specimens during the curing process. It precisely regulates the temperature and humidity inside to ensure that the concrete specimens harden under standard conditions, allowing accurate testing of their physical and mechanical properties, such as compressive strength. An immersion curing chamber is a commonly used curing device, used to completely submerge concrete specimens in water for curing. By controlling the water temperature and quality, this equipment ensures that the specimens harden under standard conditions, allowing for accurate evaluation of their physical and mechanical properties. Immersion curing chambers are suitable for simulating the concrete curing process in underwater environments and are particularly important for evaluating concrete's durability and long-term performance.

[0003] Chinese utility model patent publication number CN 218083325 U discloses a concrete curing tank that, during the water immersion curing process of specimens, controls the water supply electric valve via a controller to replenish water based on the detection signal from a water level sensor. However, during replenishment, the externally added water directly enters the tank and comes into contact with the specimens. Because the water temperature in the tank is controlled within a certain range, the temperature difference between the added water and the water inside the tank can exceed the curing requirement. This can cause deviations in the curing temperature of the specimens near the water inlet, affecting the curing quality of the specimens. Therefore, improvements are necessary. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a concrete curing box.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A concrete curing box comprises a water tank, a control box arranged on one side of the water tank, and a specimen placement rack placed in the water tank when in use; an openable and closable box cover is provided on the top of the water tank, a heating chamber is provided at the lower part of the water tank, and a heating device is provided in the heating chamber; a partition is provided on one side of the water tank, and the lower end of the partition extends to the top of the heating chamber; the two sides of the partition serve as a water inlet buffer chamber and a specimen curing chamber respectively; the bottom of the water inlet buffer chamber is connected to the heating chamber, and the top of the heating chamber is connected to the specimen curing chamber; a water inlet pipe is provided on the upper part of the water inlet buffer chamber, and a float valve is provided at the end of the water inlet pipe located in the water inlet buffer chamber; the specimen placement rack is located in the specimen curing chamber.

[0007] Preferably, the separation structure between the heating chamber and the specimen curing chamber comprises: a bracket placed in the water tank and located on the side of the specimen curing chamber, and a perforated plate provided on the upper end of the bracket.

[0008] Preferably, the bracket includes a rectangular frame, legs fixedly connected to the four corners of the frame, and reinforcing rods arranged in the frame with both ends fixedly connected to the two long sides of the frame respectively.

[0009] Preferably, the orifice plate and the bracket are separate structures.

[0010] Preferably, the specimen placement rack includes a plurality of separate frames, the frames including a rectangular bottom frame, a rectangular top frame located at the upper end of the bottom frame, vertical poles connecting the bottom frame and the top frame, and a grid frame arranged in the bottom frame for supporting the specimen.

[0011] Preferably, the grid frame is in a tic-tac-toe or diamond-shaped grid shape.

[0012] The above technical solution has the following advantages:

[0013] The present invention effectively avoids direct contact of fresh water entering the water tank with the concrete specimen by providing a water inlet buffer chamber, thereby preventing the impact on the specimen caused by sudden temperature changes. Specifically, the newly added water first enters the water inlet buffer chamber, where it undergoes natural heat exchange with the original water in the water tank, and in this way the water temperature is gradually adjusted. Subsequently, the water in the water inlet buffer chamber will automatically flow into the heating chamber from the bottom according to the balance principle of atmospheric pressure, and will be evenly distributed to the specimen curing chamber through the orifice plate in the heating chamber. The present invention ensures that during the process of replenishing water, the curing water temperature of the specimen will not fluctuate beyond the prescribed range, thereby ensuring the consistency and stability of the specimen curing conditions to the greatest extent, which is beneficial to improving the test accuracy and reliability of concrete specimens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the utility model;

[0015] Figure 2 for Figure 1 The partial cross-sectional view in

[0016] Figure 3 A three-dimensional diagram of the component placement rack, orifice plate and bracket stacking;

[0017] Figure 4 for Figure 3 Exploded diagram;

[0018] Figure 5 is a three-dimensional diagram of the orifice plate;

[0019] Figure 6 A three-dimensional diagram of the frame;

[0020] Figure 7 is a three-dimensional diagram of the bracket;

[0021] In the picture:

[0022] 1-water tank, 2-control box, 3-specimen placement rack, 4-box cover, 5-heating chamber, 6-heating device, 7-partition, 8-water inlet buffer chamber, 9-specimen curing chamber, 10-water inlet pipe, 11-float valve, 12-bracket, 13-orifice plate, 14-frame, 15-leg, 16-reinforcement rod, 17-frame, 18-bottom frame, 19-top frame, 20-vertical pole, 21-grid frame. DETAILED DESCRIPTION

[0023] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0024] As shown in the accompanying drawings, a concrete curing box comprises a water tank 1, a control box 2 arranged on one side of the water tank 1, and a specimen placement rack 3 placed in the water tank 1 when in use; an openable and closable box cover 4 is provided on the top of the water tank 1, a heating chamber 5 is provided at the lower part of the water tank 1, and a heating device 6 is provided in the heating chamber 5; a partition 7 is provided on one side of the water tank 1, and the lower end of the partition 7 extends to the top of the heating chamber 5; the two sides of the partition 7 serve as a water inlet buffer chamber 8 and a specimen curing chamber 9 respectively; the bottom of the water inlet buffer chamber 8 is connected to the heating chamber 5, and the top of the heating chamber 5 is connected to the specimen curing chamber 9; a water inlet pipe 10 is provided on the upper part of the water inlet buffer chamber 8, and a float valve 11 is provided at the end of the water inlet pipe 10 located in the water inlet buffer chamber 8; the specimen placement rack 3 is located in the specimen curing chamber 9.

[0025] As a further improved technical solution of this embodiment, the separation structure between the heating chamber 5 and the specimen curing chamber 9 is: a bracket 12 placed in the water tank 1 and located on the side of the specimen curing chamber 9, and a perforated plate 13 arranged at the upper end of the bracket 12.

[0026] The bracket 12 supports the orifice plate 13, which separates the heating chamber 5 from the specimen curing chamber 9. The orifice plate 13 ensures uniform water flow between the heating chamber 5 and the specimen curing chamber 9. The bracket 12 and orifice plate 13 can be easily removed from and inserted into the water tank 1, facilitating the removal of impurities from the bottom of the water tank 1 and the cleaning and maintenance of the heating device 6. Obviously, the existing separation structure between the heating chamber 5 and the specimen curing chamber 9 can also be used. Accordingly, the bracket 12 and orifice plate 13 also serve as the lower support for the specimen placement rack 3.

[0027] The specific structure of the bracket 12 in this embodiment includes a rectangular frame 14, legs 15 fixedly connected to the four corners of the frame 14, and reinforcing rods 16 disposed within the frame 14 and fixedly connected at both ends to the two long sides of the frame 14. Obviously, other suitable structures can also be used.

[0028] As a preferred technical solution of this embodiment, the orifice plate 13 and the bracket 12 are split structures. The split structure makes each component lighter and easier to assemble and disassemble. Obviously, an integral structure formed by fixed connection can also be adopted.

[0029] As a further improvement to this embodiment, the specimen rack 3 comprises three separate frames 17, each comprising a rectangular bottom frame 18, a rectangular top frame 19 located above the bottom frame 18, uprights 20 connecting the bottom and top frames 18, and a grid frame 21 disposed within the bottom frame 18 for supporting the specimens. The use of separate frames 17 allows for flexible and convenient stacking and facilitates the removal and placement of the frames 17 and the specimens thereon.

[0030] In this embodiment, the grid frame 21 is in a tic-tac-toe grid shape, and can obviously also be in a diamond grid shape.

[0031] The heating device 6 involved in the present invention is a prior art and can be fully implemented by those skilled in the art, so there is no need to elaborate on it.

[0032] During operation, the water inlet pipe 10 is connected to the water supply system. When the liquid level in the water tank 1 drops, the float valve 11 automatically opens to replenish water. The newly added water first enters the water inlet buffer chamber 8, where it undergoes natural heat exchange with the original water in the water tank 1, and the water temperature is gradually adjusted in this way. Subsequently, the water in the water inlet buffer chamber 8 will automatically flow into the heating chamber 5 from the bottom according to the balance principle of atmospheric pressure, and will be evenly distributed to the specimen curing chamber 9 through the orifice plate 13 in the heating chamber 5. The utility model ensures that during the process of replenishing water, the curing water temperature of the specimen will not fluctuate beyond the specified range, thereby ensuring the consistency and stability of the specimen curing conditions to the greatest extent, which is conducive to improving the testing accuracy and reliability of concrete specimens.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A concrete curing box, comprising a water tank (1), a control box (2) arranged on one side of the water tank (1), and a specimen placement rack (3) placed in the water tank (1) when in use; a closable box cover (4) is provided on the top of the water tank (1), a heating chamber (5) is provided at the lower part of the water tank (1), and a heating device (6) is provided in the heating chamber (5); the characteristics are: A partition (7) is provided at one side of the water tank (1), and the lower end of the partition (7) extends to the top of the heating chamber (5); the two sides of the partition (7) serve as a water inlet buffer chamber (8) and a specimen curing chamber (9), respectively; the bottom of the water inlet buffer chamber (8) is communicated with the heating chamber (5), and the top of the heating chamber (5) is communicated with the specimen curing chamber (9); a water inlet pipe (10) is provided at the upper part of the water inlet buffer chamber (8), and a float valve (11) is provided at the end of the water inlet pipe (10) located in the water inlet buffer chamber (8); and the specimen placement rack (3) is located in the specimen curing chamber (9).

2. The concrete curing box according to claim 1, characterized in that: The separation structure between the heating chamber (5) and the specimen curing chamber (9) comprises: a bracket (12) placed in the water tank (1) and located on the side of the specimen curing chamber (9), and a perforated plate (13) arranged on the upper end of the bracket (12).

3. The concrete curing box according to claim 2, characterized in that: The bracket (12) includes a rectangular frame (14), legs (15) fixedly connected to the four corners of the frame (14), and reinforcing rods (16) arranged in the frame (14) and fixedly connected at both ends to the two long sides of the frame (14).

4. The concrete curing box according to claim 2 or 3, characterized in that: The orifice plate (13) and the bracket (12) are separate structures.

5. The concrete curing box according to any one of claims 1 to 3, characterized in that: The specimen placement rack (3) comprises a plurality of separate frames (17), wherein the frames (17) comprise a rectangular bottom frame (18), a rectangular top frame (19) located at the upper end of the bottom frame (18), a vertical rod (20) connecting the bottom frame (18) and the top frame (19), and a grid frame (21) disposed in the bottom frame (18) for supporting the specimen.

6. The concrete curing box according to claim 5, characterized in that: The grid frame (21) is in a tic-tac-toe grid shape or a diamond grid shape.

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