Building material freezing resistance detection equipment

Abstract

The utility model discloses building material freezing resistance detection equipment, and belongs to the technical field of building material freezing resistance detection equipment. Comprising a detection box and a refrigeration fan, a partition plate is arranged on the lower portion of the detection box, a refrigeration cavity is arranged above the partition plate, a water collecting cavity is arranged below the partition plate, a hinged sealing door is arranged on one side of the refrigeration cavity, a container for containing a test body is placed in the middle of the partition plate, and a water outlet mechanism enabling water in the container to enter the water collecting cavity is arranged on the lower portion of the detection box. The air pressure sensor is matched with an exhaust valve communicated with the refrigeration cavity to control air pressure in the refrigeration cavity; by arranging the water outlet mechanism, water in the container can be drained into the water collecting cavity, by arranging the water drainage mechanism, water in the water collecting cavity can be drained, and by arranging the air pressure sensor to be matched with the exhaust valve communicated with the refrigeration cavity to control air pressure in the refrigeration cavity, the sealing door cannot be opened through ejection.

Description

Technical Field

[0001] The utility model provides a device for detecting the frost resistance of building materials, belonging to the technical field of devices for detecting the frost resistance of building materials. Background Art

[0002] Building material testing is a key link in ensuring building quality and safety. It covers the evaluation of physical, chemical, mechanical, environmental and other properties from raw materials to finished products. The testing content includes but is not limited to strength testing, durability evaluation, fire resistance, environmental indicators, thermal performance, acoustic characteristics, etc. Through strict testing, it can not only effectively prevent unqualified materials from entering the market and reduce building safety hazards, but also promote the research and development and application of new materials and promote scientific and technological progress in the construction industry.

[0003] At present, when testing the frost resistance of concrete, a concrete specimen is usually prepared first. After the specimen is cured, it is soaked in water for a period of time to make the specimen reach a saturated state. Then the specimen is placed in a container, filled with water, and placed in a freezing device. It is frozen for a period of time. After the freezing is completed, the container is taken out and thawed, and the cycle is repeated. However, when the container is taken out, unfrozen water is easy to drip onto the ground, and

[0004] Publication number: CN214749891U; discloses a building material frost resistance testing equipment, including a testing box, the upper end of the testing box is fixedly connected to the air outlet of the refrigeration fan arranged in the testing box, the rear inner wall of the testing box is fixedly connected to two second fixed plates, the lower ends of the two second fixed plates are fixedly connected to a triangular load-bearing plate, the upper ends of the two second fixed plates are movably connected to two plug rods, the upper ends of the two left plug rods and the upper ends of the two right plug rods are fixedly connected to a clamping plate, the circumferential surfaces of the four plug rods are all sleeved with second springs, and the four second springs are respectively located at the lower parts of the two second fixed plates, the lower ends of the four plug rods are fixedly connected to a limit plate, and a limiting mechanism is provided on the lower side of the refrigeration fan.

[0005] The above patent can fix building materials of different shapes, lengths and thicknesses, and is convenient for testing the frost resistance of building materials. It is simple to operate and highly practical. However, when testing the frost resistance of concrete, a concrete specimen is usually made first. After the specimen is cured, it is soaked in water for a period of time to make the specimen reach a saturated state. Then, the specimen is placed in a container, filled with water, and placed in a freezing device. It is frozen for a period of time. After the freezing is completed, the container is taken out and thawed, and the cycle is repeated. However, when taking out the container, unfrozen water is easy to drip onto the ground, and the refrigeration fan keeps blowing air into the test box, which will increase the air pressure inside the test box and easily push open the sealed door, resulting in poor freezing effect. Utility Model Content

[0006] The technical problem to be solved by the utility model is that, when the antifreeze test of concrete is currently carried out, unfrozen water will drip onto the ground, and the sealed door of the test box will be easily pushed open.

[0007] In order to solve the above problems, the utility model proposes the following technical solutions: a building material antifreeze testing device, comprising a testing box and a refrigeration fan; a partition is provided at the lower part of the testing box, a refrigeration chamber is above the partition and a water collecting chamber is below the partition, a hinged sealing door is provided on one side of the refrigeration chamber, a container for placing a test piece is placed in the middle of the partition, a water outlet mechanism is provided at the lower part of the testing box for allowing water in the container to enter the water collecting chamber, a drainage mechanism is provided on the water collecting chamber, an air pressure sensor is provided in the refrigeration chamber, and the air pressure sensor cooperates with an exhaust valve connected to the refrigeration chamber to control the air pressure in the refrigeration chamber.

[0008] As an improvement, the refrigeration fan is arranged above the detection box and connected to the refrigeration cavity;

[0009] As an improvement, the four corners of the lower part of the test box are provided with supporting legs, and the upper outer side of the test box is provided with a display screen and a control panel;

[0010] As an improvement, a temperature sensor is also provided in the refrigeration chamber. The temperature sensor is controlled by a control panel, and the sensed temperature value is displayed on a display screen.

[0011] As an improvement, the water outlet mechanism includes a cylinder arranged below the detection box and controlled by a control panel. The cylinder axis of the cylinder passes through the detection box. The end of the cylinder axis is provided with a water retaining block with a cross section that is smaller at the top and larger at the bottom. When the cylinder axis is at its longest, the water retaining block passes through the partition and the container, and the upper end surface is flush with the lower end surface in the container.

[0012] As an improvement, the drainage mechanism includes a waterproof sleeve arranged at the bottom of the water collecting chamber and sleeved on the outside of the cylinder shaft of the cylinder, and having an outer diameter smaller than the water retaining block, a water level monitor arranged on one side of the water collecting chamber, a water pipe connected to the water collecting chamber, and an electrically controlled drain valve arranged on the water pipe. A gap is left between the upper end of the waterproof sleeve and the lowest point of the water retaining block. The water level monitor detects the upper part of the waterproof sleeve. When the water level monitor detects water, it transmits a signal to the control panel, and the control panel controls the activation of the electrically controlled drain valve.

[0013] As an improvement, the air pressure sensor is connected to the display screen and the control panel display, and the exhaust valve is connected to the control panel.

[0014] Beneficial effects of the utility model:

[0015] By setting up a water outlet mechanism, the water in the container can be discharged into the water collecting chamber. By setting up a drainage mechanism, the water in the water collecting chamber can be discharged. By setting up an air pressure sensor and cooperating with the exhaust valve connected to the refrigeration chamber to control the air pressure in the refrigeration chamber, the sealed door will not be pushed open. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a building material frost resistance testing device according to the present utility model.

[0017] Figure 2 The utility model is a schematic diagram of the internal structure of the refrigeration chamber of a building material frost resistance testing device.

[0018] Figure 3 This is a schematic diagram of the internal structure of the water collection chamber of a building material frost resistance testing device of the present utility model.

[0019] Figure 4 This is a cross-sectional view of a device for detecting the frost resistance of building materials according to the present utility model.

[0020] 1. Detection box; 101. Sealing door; 102. Support legs; 103. Display screen; 104. Control panel; 2. Refrigeration fan; 3. Partition; 4. Container; 5. Water outlet mechanism; 501. Cylinder; 502. Water retaining block; 6. Drainage mechanism; 601. Waterproof cover; 602. Water level monitor; 603. Water pipe; 604. Electric drain valve; 7. Air pressure sensor; 8. Exhaust valve; 9. Temperature sensor. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] according to Figure 1 —4 shows: the utility model provides a building material antifreeze testing equipment: comprising a testing box 1, a refrigeration fan 2; a partition 3 is provided at the lower part of the testing box 1, a refrigeration chamber is above the partition 3 and a water collecting chamber is below the partition 3, a hinged sealing door 101 is provided on one side of the refrigeration chamber, a container 4 for placing a test body is placed in the middle of the partition 3, a water outlet mechanism 5 for allowing water in the container 4 to enter the water collecting chamber is provided at the lower part of the testing box 1, a drainage mechanism 6 is provided on the water collecting chamber, an air pressure sensor 7 is provided in the refrigeration chamber, the air pressure sensor 7 cooperates with an exhaust valve 8 connected to the refrigeration chamber to control the air pressure in the refrigeration chamber, the refrigeration fan 2 is arranged above the testing box 1, connected to the refrigeration chamber, and the four corners below the testing box 1 are respectively provided with Support legs 102, a display screen 103 and a control panel 104 are provided on the outer side of the upper portion of the detection box 1; a temperature sensor 9 is also provided in the refrigeration chamber, which is controlled by the control panel 104, and the sensed temperature value is displayed on the display screen 103; an air pressure sensor 7 is connected to the display screen 103 and the control panel 104 for display, and an exhaust valve 8 is connected to the control panel 104; by providing a water outlet mechanism 5, the water in the container 4 can be discharged into the water collection chamber, and by providing a drainage mechanism 6, the water in the water collection chamber can be discharged. By providing an air pressure sensor 7 in conjunction with the exhaust valve 8 connected to the refrigeration chamber, the air pressure in the refrigeration chamber is controlled so that the sealed door 101 will not be pushed open;

[0023] according to Figure 2 、 3 4: The water outlet mechanism 5 includes a cylinder 501 arranged below the test box 1 and controlled by the control panel 104. The cylinder axis of the cylinder 501 passes through the test box 1. The end of the cylinder axis of the cylinder 501 is provided with a water retaining block 502 with a small cross-section at the top and a large cross-section at the bottom. When the cylinder axis of the cylinder 501 is at its longest, the water retaining block 502 passes through the partition 3 and the container 4, and the upper end surface is flush with the lower end surface in the container 4. In this way, when the test block needs to be removed, the water retaining block 502 can be lowered by contracting the cylinder axis of the cylinder 501, so that the water in the container flows into the water collecting chamber.

[0024] according to Figure 2 、 3 4: The drainage mechanism 6 includes a waterproof sleeve 601 which is arranged at the bottom of the water collecting chamber and is sleeved on the outside of the cylinder shaft of the cylinder 501, and has an outer diameter smaller than the water retaining block 502, a water level monitor 602 arranged on one side of the water collecting chamber, a water pipe 603 connected to the water collecting chamber, and an electric-controlled drain valve 604 arranged on the water pipe 603. A gap is left between the upper end of the waterproof sleeve 601 and the lowest point of the water retaining block 502. The detection position of the water level monitor 602 is the upper part of the waterproof sleeve 601. When the water level monitor 602 detects water, it will transmit a signal to the control panel 104, and the control panel 104 will control the electric-controlled drain valve 604 to start; in this way, when the water in the water collecting chamber reaches the upper part of the waterproof sleeve 601, the water level monitor 602 will send a signal to the control panel 104, and the control panel 104 will control the electric-controlled drain valve 604 to start, so that the water is discharged from the water collecting chamber.

[0025] The principle of the present invention is as follows: when in use, a test block is first made and cured, then the sealing door 101 is opened and the test block is placed in the container 4, then water is added to the container 4, the test block is soaked until the test block reaches a saturated state, and then water is continued to be added to the container 4 until the water covers the test block. Under the action of the test block's own weight, the lower end of the container 4 will fit tightly against the partition 3, then the sealing door 101 is closed and the refrigeration fan 2 is turned on through the control panel 104. The refrigeration fan 2 will deliver cold air into the refrigeration cavity to freeze the test block. When the air pressure inside the refrigeration cavity is too high, the air pressure sensor 7 will sense it and then transmit the signal to the display screen 103 and the control panel 104. The display screen 103 will display the air pressure inside the refrigeration cavity in real time. The control panel 104 will control the exhaust valve 8 to start, so that the pressure inside the refrigeration cavity is normal. When the air pressure sensor 7 senses that the pressure inside the refrigeration cavity is normal, it will transmit the signal to the display screen 103 and the control panel 104. 4 will control the exhaust valve 8 to close, the temperature sensor 9 will monitor the temperature inside the refrigeration chamber in real time, and then transmit the signal to the display screen 103 and the control panel 104. The display screen 103 will display the temperature inside the refrigeration chamber in real time. When the temperature inside the refrigeration chamber is high, the control panel 104 will reduce the temperature of the air blown by the refrigeration fan 2, thereby reducing the temperature inside the refrigeration chamber. When the temperature inside the refrigeration chamber is high or low, the control panel 104 will increase the temperature of the air blown by the refrigeration fan 2, thereby increasing the temperature inside the refrigeration chamber. When the test block is frozen once, a bucket of water is placed under the end of the water pipe 603, and then the cylinder shaft of the cylinder 501 is retracted through the control panel 104 to lower the water block 502. Water will drip from the gap under the test block into the water collecting chamber. When water stops dripping, the sealing door 101 is opened and the container 4 and the test block are taken out so that water will not drip onto the ground. Then the container 4 and the test block are thawed, and the above outflow is circulated to complete the antifreeze test.

[0026] When the water in the water collecting chamber reaches the upper part of the waterproof cover 601, the water level monitor 602 will send a signal to the control panel 104, and the control panel 104 will control the electric control drain valve 604 to start, so that the water is discharged from the water pipe 603 and enters the water bucket.

[0027] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A building material antifreeze testing device, comprising a testing box (1) and a refrigeration fan (2); characterized in that: The detection box (1) is provided with a partition (3) at the bottom, a refrigeration chamber is located above the partition (3) and a water collecting chamber is located below the partition (3), a hinged sealing door (101) is provided on one side of the refrigeration chamber, a container (4) for placing a test body is placed in the middle of the partition (3), a water outlet mechanism (5) for allowing water in the container (4) to enter the water collecting chamber is provided at the bottom of the detection box (1), a drainage mechanism (6) is provided on the water collecting chamber, an air pressure sensor (7) is provided in the refrigeration chamber, and the air pressure sensor (7) cooperates with an exhaust valve (8) connected to the refrigeration chamber to control the air pressure in the refrigeration chamber.

2. A building material frost resistance testing device according to claim 1, characterized in that: The refrigeration fan (2) is arranged above the detection box (1) and is connected to the refrigeration cavity.

3. The building material frost resistance testing device according to claim 1, characterized in that: Support legs (102) are respectively provided at the four lower corners of the detection box (1), and a display screen (103) and a control panel (104) are provided on the outer side of the upper portion of the detection box (1).

4. A building material frost resistance testing device according to claim 3, characterized in that: A temperature sensor (9) is also provided in the refrigeration chamber. The temperature sensor (9) is controlled by a control panel (104), and the sensed temperature value is displayed by a display screen (103).

5. The building material frost resistance testing device according to claim 3, characterized in that: The water outlet mechanism (5) comprises a cylinder (501) arranged below the detection box (1) and controlled by a control panel (104); the cylinder axis of the cylinder (501) passes through the detection box (1); the end of the cylinder axis of the cylinder (501) is provided with a water retaining block (502) having a cross section that is smaller at the top and larger at the bottom; when the cylinder axis of the cylinder (501) is at its longest, the water retaining block (502) passes through the partition (3) and the container (4), and the upper end surface is flush with the lower end surface in the container (4).

6. A building material frost resistance testing device according to claim 5, characterized in that: The drainage mechanism (6) comprises a waterproof sleeve (601) arranged below the water collecting chamber and sleeved on the outside of the cylinder shaft of the cylinder (501), and having an outer diameter smaller than that of the water retaining block (502); a water level monitor (602) arranged on one side of the water collecting chamber; a water pipe (603) communicating with the water collecting chamber; and an electrically controlled drainage valve (604) arranged on the water pipe (603). A gap is left between the upper end of the waterproof sleeve (601) and the lowest point of the water retaining block (502). The detection position of the water level monitor (602) is the upper part of the waterproof sleeve (601). When the water level monitor (602) detects water, it transmits a signal to the control panel (104), and the control panel (104) controls the electrically controlled drainage valve (604) to start.

7. The building material frost resistance testing device according to claim 5, characterized in that: The air pressure sensor (7) is connected to the display screen (103) and the control panel (104) for display, and the exhaust valve (8) is connected to the control panel (104).

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