A carbonation test chamber for concrete durability testing

Abstract

This utility model discloses a carbonation testing box for concrete durability testing, belonging to the field of concrete testing technology. It solves the problems of increased labor consumption and cumbersome operation associated with manually placing and removing concrete test blocks. The utility model includes a box body with a sealed door on the front and an air inlet pipe and exhaust assembly on the side. A placement plate is movably arranged inside the box, with a movable block at the bottom. A receiving groove is formed at the bottom of the inner cavity of the box, and a threaded rod is rotatably connected to the receiving groove. One end of the threaded rod is connected to a servo motor. The movable block is threadedly connected to the threaded rod and slidably connected within the receiving groove. This utility model features a placement plate driven by a servo motor inside the box. The servo motor drives the threaded rod to rotate, causing the movable block to move and move the placement plate, facilitating the placement and removal of concrete test blocks. This makes the operation simple, quick, and labor-saving.

Description

Technical Field

[0001] This utility model belongs to the field of concrete testing technology, specifically relating to a carbonation testing box for concrete durability testing. Background Technology

[0002] A concrete carbonation testing chamber, also known as a concrete carbonation test chamber, is a laboratory device specifically designed to simulate the effects of atmospheric carbon dioxide erosion on concrete in real-world environments. In the construction industry, concrete carbonation reduces the alkalinity of the concrete, which in turn affects the passivation layer protection of the reinforcing steel, potentially leading to steel corrosion and impacting the durability and service life of the concrete structure.

[0003] For concrete carbonation testing chambers that are currently widely used, the common practice is to manually place and remove concrete test blocks. This method increases manpower consumption, is cumbersome, and inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a carbonation testing box for concrete durability testing, so as to solve the problems of increased manpower consumption and cumbersome operation caused by manually placing and removing concrete test blocks.

[0005] The technical solution of this utility model is: a carbonation testing box for concrete durability testing, including a box body, a sealed door on the front of the box body, an air inlet pipe and an exhaust assembly on the side of the box body, a placement plate movably arranged inside the box body, a moving block at the bottom of the placement plate, a receiving groove opened at the bottom of the inner cavity of the box body, a threaded rod rotatably connected to the receiving groove, a servo motor connected to one end of the threaded rod, and the moving block being threadedly connected to the threaded rod and slidably connected in the receiving groove.

[0006] As a further improvement of this utility model, limiting grooves are provided on both sides of the bottom of the inner cavity of the box, and limiting blocks are provided on both sides of the bottom of the placement plate. The limiting blocks are slidably connected in the limiting grooves on the corresponding sides.

[0007] As a further improvement of this utility model, a connecting frame is movably arranged above the placement plate, and a cleaning block is installed on the connecting frame, with the lower surface of the cleaning block adhering to the upper surface of the placement plate.

[0008] As a further improvement of this utility model, the connecting frame is provided with an installation groove, and the cleaning block can be detachably connected to the installation groove.

[0009] As a further improvement of this utility model, sliding grooves are provided on both sides of the top of the placement plate, and sliding rods are provided in the sliding grooves. Slider blocks are provided on both sides of the bottom of the connecting frame, and the sliders are slidably connected to the sliding rods on the corresponding sides. The sliders are connected to linear motors.

[0010] As a further improvement of this utility model, the linear motor is provided with a protective shell.

[0011] As a further improvement of this utility model, a control panel is provided on the front of the housing, and the control panel is connected to the servo motor and the linear motor through the controller.

[0012] As a further improvement of this utility model, an electromagnetic valve is provided on the intake pipe, and the electromagnetic valve is connected to the control panel through a controller.

[0013] As a further improvement of this utility model, the exhaust assembly is connected to the control panel via a controller.

[0014] As a further improvement of this utility model, a display is provided on the front of the box, and the display is connected to the controller.

[0015] The beneficial effects of this utility model are: 1. This utility model has a placement plate driven by a servo motor inside the box. The servo motor drives the screw to rotate, so that the moving block is forced to move the placement plate, which can easily send concrete test blocks into or out of the box, thus making it convenient to pick up and place the concrete test blocks. The operation is simple and quick, saves manpower, and is easy to use.

[0016] 2. This utility model has a cleaning block set on the placement plate. Driven by a linear motor, the slider moves the connecting frame and the cleaning block. The cleaning block can clean the concrete residue remaining on the top of the placement plate, which is easy to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the inner cavity of the box body in this utility model; Figure 4 This is a schematic diagram of the structure of the placement plate in this utility model.

[0018] In the diagram: 1. Housing; 2. Sealed door; 3. Display screen; 4. Control panel; 5. Inlet pipe; 6. Solenoid valve; 7. Exhaust assembly; 81. Receiving slot; 82. Servo motor; 83. Threaded rod; 84. Moving block; 85. Placement plate; 86. Limiting block; 87. Limiting groove; 88. Sliding groove; 89. Sliding rod; 90. Sliding block; 91. Linear motor; 92. Protective shell; 93. Connecting bracket; 94. Mounting slot; 95. Cleaning block. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] like Figure 1-4 As shown, a carbonation testing box for concrete durability testing includes a box body 1. A sealing door 2 is hinged to the front of the box body 1. An air inlet pipe 5 and an exhaust assembly 7 are provided on the side of the box body 1. A placement plate 85 is movably arranged inside the box body 1. A movable block 84 is provided at the bottom of the placement plate 85. A receiving groove 81 is opened at the bottom of the inner cavity of the box body 1. A threaded rod 83 is rotatably connected to the receiving groove 81. A servo motor 82 is connected to one end of the threaded rod 83. The movable block 84 is threadedly connected to the threaded rod 83 and slidably connected in the receiving groove 81.

[0021] Limiting grooves 87 are provided on both sides of the bottom of the inner cavity of the box 1, and limiting blocks 86 are provided on both sides of the bottom of the placement plate 85. The limiting blocks 86 are slidably connected in the limiting grooves 87 on the corresponding sides.

[0022] A connecting frame 93 is movably arranged above the placement plate 85, and a cleaning block 95 is installed on the connecting frame 93. The lower surface of the cleaning block 95 is attached to the upper surface of the placement plate 85.

[0023] The connecting bracket 93 is provided with a mounting groove 94, and the cleaning block 95 is detachably connected to the mounting groove 94 and fixed with bolts.

[0024] Sliding grooves 88 are provided on both sides of the top of the placement plate 85, and sliding rods 89 are provided in the sliding grooves 88. Sliding blocks 90 are provided on both sides of the bottom of the connecting frame 93. The sliding blocks 90 are slidably connected to the sliding rods 89 on the corresponding sides. A linear motor 91 is connected to the sliding blocks 90. A protective shell 92 is provided on the outside of the linear motor 91.

[0025] The front of the housing 1 has a control panel 4, which is connected to the servo motor 82 and the linear motor 91 via a controller. The intake pipe 5 has a solenoid valve 6, which is connected to the control panel 4 via the controller. The exhaust assembly 7 is connected to the control panel 4 via the controller.

[0026] The front of the housing 1 is equipped with a display 3, which is connected to the controller.

[0027] The provision of power is common knowledge in this field.

[0028] Controller model: Siemens S7-1200. The controller's control circuit can be easily implemented by those skilled in the art through simple programming.

[0029] Chamber 1 is existing equipment, identical to existing carbonization testing chambers, and its temperature and humidity can be adjusted. Under normal test conditions, the internal temperature range of chamber 1 is 20±2℃, the humidity range is 70±5% RH, the CO2 concentration is 20±3%, and the carbonization cycle is 3 / 7 / 14 / 28 days (adjustable). Parameters are set via control panel 4, and data is fed back to display screen 3 in real time.

[0030] The exhaust assembly 7 is existing equipment, including an exhaust pipe, an exhaust fan (power 0.5kW, air volume 50m³ / h), and an electromagnetic exhaust valve.

[0031] The cleaning block 95 is made of polyurethane rubber (hardness 60 Shore A) and has serrated scraping teeth on the bottom with a height of 5mm and a spacing of 10mm.

[0032] When testing is required, the sealing door 2 is opened, and the servo motor 82 is activated via the control panel 4. The servo motor 82 drives the threaded rod 83 to rotate, and the moving block 84 moves within the receiving groove 81 under the action of the thread, thereby sending the placement plate 85 out of the inner cavity of the chamber 1, facilitating the placement of concrete test blocks on the placement plate 85. According to the program settings, after a certain delay (e.g., 60 seconds), the servo motor 82 rotates in the reverse direction, causing the moving block 84 to move the placement plate 85 back into the chamber 1 to reset, and then the sealing door 2 is closed. During the movement of the placement plate 85, the limiting block 86 moves in conjunction with the limiting groove 87, improving the stability of the movement of the placement plate 85. Then, the solenoid valve 6 is activated via the control panel 4, and CO2 is introduced into the inner cavity of the chamber 1 to the required concentration through the air inlet pipe 5 for testing. After the test, the exhaust assembly 7 is activated via the control panel 4, the solenoid exhaust valve opens, and the exhaust fan starts, reducing the CO2 concentration in the chamber to <1%. Open the sealing door 2, turn on the servo motor 82 again, and send the placement plate 85 out of the inner cavity of the box 1 to facilitate the removal of the concrete test block. After a delay, the servo motor 82 rotates in the opposite direction, so that the placement plate 85 moves into the box 1 and resets. Then close the sealing door 2.

[0033] When cleaning the placement plate 85 is required, the linear motor 91 is activated via the control panel 4. The linear motor 91 drives the slider 90 to slide outside the slide rod 89. The slider 90 moves the connecting frame 93, and the cleaning block 95 moves against the upper surface of the placement plate 85 to clean the concrete residue remaining on the upper surface of the placement plate 85. The program can be set so that the linear motor 91 drives the slider 90 to reciprocate 3 times.

Claims

1. A carbonation testing chamber for concrete durability testing, comprising a chamber body, a sealed door on the front of the chamber body, and an air inlet pipe and an exhaust assembly on the side of the chamber body, characterized in that: A placement plate (85) is movably arranged inside the box (1). A moving block (84) is provided at the bottom of the placement plate (85). A receiving groove (81) is provided at the bottom of the inner cavity of the box (1). A threaded rod (83) is rotatably connected to the receiving groove (81). A servo motor (82) is connected to one end of the threaded rod (83). The moving block (84) is threadedly connected to the threaded rod (83) and is slidably connected in the receiving groove (81).

2. The carbonation testing chamber for concrete durability testing according to claim 1, characterized in that: Limiting grooves (87) are provided on both sides of the bottom of the inner cavity of the box (1), and limiting blocks (86) are provided on both sides of the bottom of the placement plate (85). The limiting blocks (86) are slidably connected in the limiting grooves (87) on the corresponding sides.

3. A carbonation testing chamber for concrete durability testing according to claim 1 or 2, characterized in that: A connecting frame (93) is movably arranged above the placement plate (85), and a cleaning block (95) is installed on the connecting frame (93). The lower surface of the cleaning block (95) is attached to the upper surface of the placement plate (85).

4. A carbonation testing chamber for concrete durability testing according to claim 3, characterized in that: The connecting frame (93) is provided with a mounting groove (94), and the cleaning block (95) is detachably connected to the mounting groove (94).

5. A carbonation testing chamber for concrete durability testing according to claim 4, characterized in that: Sliding grooves (88) are provided on both sides of the top of the placement plate (85), and sliding rods (89) are provided in the sliding grooves (88). Sliding blocks (90) are provided on both sides of the bottom of the connecting frame (93). The sliding blocks (90) are slidably connected to the sliding rods (89) on the corresponding sides. The sliding blocks (90) are connected to a linear motor (91).

6. A carbonation testing chamber for concrete durability testing according to claim 5, characterized in that: The linear motor (91) is provided with a protective shell (92).

7. A carbonation testing chamber for concrete durability testing according to claim 6, characterized in that: The front of the housing (1) is provided with a control panel (4), which is connected to the servo motor (82) and the linear motor (91) through a controller.

8. A carbonation testing chamber for concrete durability testing according to claim 7, characterized in that: The intake pipe (5) is equipped with a solenoid valve (6), which is connected to the control panel (4) via a controller.

9. A carbonation testing chamber for concrete durability testing according to claim 8, characterized in that: The exhaust assembly (7) is connected to the control panel (4) via a controller.

10. A carbonation testing chamber for concrete durability testing according to claim 9, characterized in that: The front of the housing (1) is equipped with a display (3), which is connected to the controller.

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