An alkali aggregate test chamber

Abstract

The utility model relates to concrete alkali aggregate detection equipment technical field, concretely relates to a kind of alkali aggregate test box.It contains test box box and lid.The upper surface of lid is evenly provided with multiple material taking ports, and sealing assembly is arranged in material taking port.Sealing assembly contains handle, sealing plate, sealing disc, limiting plate, connecting rod and spring.Handle is arranged above sealing plate;The upper surface of sealing plate is provided with recess, sealing disc can be compressed downward, and it is arranged in recess;Round hole is arranged in recess;Limiting plate is located in the lower surface of sealing plate, connecting rod passes through round hole, and is connected with sealing disc and limiting plate respectively;Spring is sleeved in connecting rod, and two end surfaces are abutted to sealing disc and limiting plate.The device does not need to open the whole lid, can effectively avoid the escape of a large amount of hot air, reduce the temperature fluctuation amplitude of box, ensure the reaction process of alkali aggregate, improve the accuracy and reliability of aggregate alkali activity evaluation.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete alkali-aggregate testing equipment, specifically to an alkali-aggregate test chamber. Background Technology

[0002] The alkali-aggregate testing chamber constructs a sealed environment using a corrosion-resistant chamber. It simulates the high humidity (≥95%RH), high temperature (30–80℃), and strong alkali (pH>12.5) conditions experienced by concrete during service using heating pipes, a humidifier, and a NaOH circulation system. A platinum resistance thermometer monitors temperature and humidity in real time and feeds this data back to the PLC controller. A PID algorithm dynamically adjusts the heating, humidification, and circulation processes to accelerate the chemical reaction between the active components in the aggregate and the alkali solution. A displacement sensor monitors the expansion, thereby rapidly assessing the alkali reactivity of the aggregate and providing a basis for material selection in engineering projects.

[0003] Chinese patent CN215599168U proposes a testing instrument that can quickly remove specimens by spraying water for cooling, thus improving testing efficiency. However, in actual operation, the chamber lid needs to be opened frequently to replace the specimens, leading to the escape of hot air and the intrusion of cold air, causing temperature fluctuations. Even if the temperature control system responds quickly, short-term temperature changes can still interfere with the reaction process of other batches of specimens, affecting the accuracy and reliability of the data. Therefore, the structural design of the test chamber needs further optimization. Utility Model Content

[0004] The purpose of this invention is to provide an alkali-aggregate test chamber that solves the technical problem in the prior art where frequent opening of the chamber lid to replace samples affects the accuracy and reliability of the data.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an alkali aggregate test chamber, comprising a test chamber body with an upward-facing opening and a cover for sealing the test chamber body; the upper surface of the cover is uniformly provided with a plurality of material inlets, and a sealing component is provided inside each material inlet for sealing the material inlet; The sealing assembly includes a handle, a sealing plate, a sealing disc, a limiting plate, a connecting rod, and a spring; the handle is positioned above the sealing plate; the upper surface of the sealing plate has a groove, the sealing disc can be compressed downwards and is positioned within the groove; the groove has a circular hole. The limiting plate is located on the lower surface of the sealing plate. The connecting rod passes through the circular hole, and its two end faces are respectively connected to the lower surface of the sealing plate and the upper surface of the limiting plate. The spring is sleeved inside the connecting rod, and its two end faces abut against the lower surface of the sealing plate and the upper surface of the limiting plate, respectively.

[0006] Furthermore, a first sealing ring is embedded in the outer wall of the sealing disc, and the outer wall of the first sealing ring is tightly fitted with the inner wall of the groove.

[0007] Furthermore, a second sealing ring is embedded in the outer wall of the sealing plate, and the outer wall of the second sealing ring is tightly fitted with the inner wall of the material inlet.

[0008] Furthermore, the test chamber is equipped with a support frame and a support plate inside; the upper surface of the support frame is uniformly provided with through holes that are adapted to the material inlet; the through holes are used to limit the position of the test box, the support plate is located below the support frame, and the test box is placed on the upper surface of the support plate.

[0009] Furthermore, the handle has a U-shaped structure with the opening facing the side.

[0010] Furthermore, the angle between the limiting plate and the handle is 90°.

[0011] Furthermore, a control box is installed on one side of the test chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Multiple material inlets are set on the top of the box cover, and sealing components are set to seal the material inlets. By removing the sealing components inside the material inlets, the test boxes inside the test chamber can be taken out individually from the corresponding material inlets, and then the samples can be taken out. 2. This device does not require the entire box cover to be opened, which can effectively prevent a large amount of heat from escaping, reduce the temperature fluctuation range of the box, ensure the reaction process of alkali aggregate, and improve the accuracy and reliability of the assessment of alkali activity of aggregate. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a schematic diagram showing the installation position of the specimen box of this utility model; Figure 3 This is a structural diagram of the test chamber body of this utility model; Figure 4 This is a structural diagram of the box lid of this utility model; Figure 5 This is a structural diagram of the sealing assembly of this utility model; Figure 6 This is a structural diagram of the sealing plate of this utility model.

[0014] Label Explanation: 1. Test chamber body; 2. Chamber lid; 21. Material inlet; 3. Sealing assembly; 31. Handle; 32. Sealing plate; 321. Groove; 322. Round hole; 33. Sealing disc; 34. Limiting plate; 35. Connecting rod; 36. Spring; 37. First sealing ring; 38. Second sealing ring; 4. Support frame; 41. Through hole; 5. Support plate; 6. Control box; 7. Test box. Detailed Implementation

[0015] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0016] Please refer to Figures 1-6 As shown, the technical solution adopted by this utility model is: an alkali aggregate test chamber, comprising a test chamber body 1 with the opening facing upward and a box cover 2 for sealing the test chamber body; the upper surface of the box cover 2 is evenly provided with a plurality of material inlets 21, and a sealing component 3 is provided inside the material inlet 21 for sealing the material inlet 21. The sealing assembly 3 includes a handle 31, a sealing plate 32, a sealing disc 33, a limiting plate 34, a connecting rod 35, and a spring 36; the handle 31 is disposed above the sealing plate 32; the upper surface of the sealing plate 32 is provided with a groove 321, the sealing disc 33 can be compressed downward and is disposed in the groove 321; the groove 321 is provided with a round hole 322. The limiting plate 34 is located on the lower surface of the sealing plate 32. The connecting rod 35 passes through the circular hole 322, and its two end faces are respectively connected to the lower surface of the sealing plate 33 and the upper surface of the limiting plate 34. The spring 36 is sleeved in the connecting rod 35, and its two end faces abut against the lower surface of the sealing plate 33 and the upper surface of the limiting plate 34, respectively.

[0017] As described above, multiple sets of material inlets 21 are provided above the cover 2, and sealing components 3 are provided to seal the material inlets 21. By removing the sealing components 3 inside the material inlets 21, the test boxes 7 inside the test chamber 1 can be individually removed from the corresponding material inlets 21, and then the samples can be taken out. During the process of taking out or putting in the samples, it is not necessary to open the cover 2 as a whole, which can effectively avoid a large amount of heat loss, reduce the temperature fluctuation of the chamber, ensure the reaction process of alkali aggregate, and improve the accuracy and reliability of the alkali activity assessment of aggregate.

[0018] Preferably, the outer wall of the sealing disc 33 is inlaid with a first sealing ring 37, and the outer wall of the first sealing ring 37 is in close contact with the inner wall of the groove 321.

[0019] As can be seen from the above description, the above settings can improve the sealing performance between the sealing disc 33 and the sealing plate 32, reduce the escape of heat from the box, and further ensure the reaction process of the alkali aggregate.

[0020] Preferably, a second sealing ring 38 is embedded in the outer wall of the sealing plate 32, and the outer wall of the second sealing ring 38 is in close contact with the inner wall of the material inlet 21.

[0021] As can be seen from the above description, the above settings can improve the sealing performance between the sealing plate 32 and the feed port 21, reduce the escape of hot air from the box, and further ensure the reaction process of the alkali aggregate.

[0022] Preferably, the test chamber 1 is provided with a support frame 4 and a support plate 5 inside; the upper surface of the support frame 4 is uniformly provided with through holes 41 that are adapted to the material inlet 21; the through holes 41 are used to limit the position of the test box 7, the support plate 5 is located below the support frame 4, and the test box 7 is placed on the upper surface of the support plate 5.

[0023] As can be seen from the above description, by using the through hole 41 on the support frame 4, the test box 7 can be confined inside the test chamber 1 and supported by the support plate 5, effectively preventing the test box 7 from shaking inside the chamber.

[0024] Preferably, the handle 31 has a U-shaped structure with the opening facing the side.

[0025] As can be seen from the above description, the U-shaped opening of the handle 31 allows the operator to grip the handle 31 more firmly, making it easier for the operator to rotate the handle 31 and quickly remove or fix the sealing component 3 from the material inlet 21.

[0026] Preferably, the angle between the limiting plate 34 and the handle 31 is 90°.

[0027] As can be seen from the above description, the above settings enable the operator to clearly understand that after rotating the handle 31 90°, the limiting plate 34 can be separated from the box cover 2, and the sealing component 3 can be taken out from the material outlet 21.

[0028] Preferably, a control box 6 is installed on one side of the test chamber body 1.

[0029] As can be seen from the above description, with the above settings, the operator can use the control box 6 to control the automatic operation procedures of the test chamber, such as heating.

[0030] The working principle of this utility model is as follows: The aggregate sample is loaded into the test specimen box 7, and then the test specimen box 7 is placed on the support frame 4 and support plate 5 inside the test chamber 1. The box cover 2 is then closed, and the aggregate sample can be tested.

[0031] During the test, grip handle 31 and press down on sealing plate 33. Through the action of connecting rod 35, limit plate 34 moves down and separates from box cover 1. Rotate handle 31 ninety degrees so that limit plate 34 can be taken out from material outlet 21. Then, sealing component 3 can be taken out from material outlet 21. Then, the operator can take out test box 7 from material outlet 21.

[0032] When the operator needs to put the test box 7 into the test chamber 1, align the test box 7 with the material inlet 21 and put it in through the through hole 41 on the support frame 4, so that the test box 7 is above the support plate 5. Insert the bottom of the sealing plate 32 into the inside of the feeding port 21, and the top of the sealing plate 32 fits against the box cover 2. Then press down on the sealing plate 33 and turn the handle 31 ninety degrees. At this time, the limiting plate 34 rotates ninety degrees and fits against the lower surface of the box cover 2. Then release the handle 31, the spring 36 returns to its original position, the position of the sealing assembly 3 is fixed, the feeding port 21 is sealed, and the aggregate sample can be tested.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An alkali-aggregate test chamber, comprising a test chamber body with an upward-facing opening and a cover for sealing the test chamber body; characterized in that, The upper surface of the box cover is evenly provided with multiple material inlets, and a sealing component is provided inside each material inlet to seal the material inlet; The sealing assembly includes a handle, a sealing plate, a sealing disc, a limiting plate, a connecting rod, and a spring; the handle is positioned above the sealing plate; the upper surface of the sealing plate has a groove, the sealing disc can be compressed downwards and is positioned within the groove; the groove has a circular hole. The limiting plate is located on the lower surface of the sealing plate. The connecting rod passes through the circular hole, and its two end faces are respectively connected to the lower surface of the sealing plate and the upper surface of the limiting plate. The spring is sleeved inside the connecting rod, and its two end faces abut against the lower surface of the sealing plate and the upper surface of the limiting plate, respectively.

2. The alkali-aggregate test chamber according to claim 1, characterized in that, The outer wall of the sealing disc is inlaid with a first sealing ring, and the outer wall of the first sealing ring is tightly fitted with the inner wall of the groove.

3. The alkali-aggregate test chamber according to claim 1, characterized in that, The outer wall of the sealing plate is inlaid with a second sealing ring, and the outer wall of the second sealing ring is tightly fitted with the inner wall of the material inlet.

4. The alkali-aggregate test chamber according to claim 1, characterized in that, The test chamber is equipped with a support frame and a support plate inside; the upper surface of the support frame is evenly provided with through holes that are adapted to the material inlet; the through holes are used to restrict the position of the test box; the support plate is located below the support frame, and the test box is placed on the upper surface of the support plate.

5. The alkali-aggregate test chamber according to claim 1, characterized in that, The handle has a U-shaped structure with the opening facing the side.

6. The alkali-aggregate test chamber according to claim 1, characterized in that, The angle between the limiting plate and the handle is 90°.

7. The alkali-aggregate test chamber according to claim 1, characterized in that, A control box is installed on one side of the test chamber.

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