A test device for the finished product performance of autoclaved aerated concrete blocks

Abstract

This invention discloses a performance testing device for autoclaved aerated concrete (AAC) blocks, relating to the field of filtration equipment. Addressing the shortcomings of prior art, such as the inability to comprehensively test the dry density and moisture content of AAC blocks, and the low testing efficiency due to the limitation of a single electrically heated drying oven processing only one AAC block sample, the present invention proposes the following solution: A base is included, with an insulated drying chamber mounted on top of the base. The insulated drying chamber comprises a support frame bolted to the outer wall of the base top and a box body internally coated with a ceramic fiber insulation layer. Three heating mechanisms, each including several fans, are located within the support frame. This invention enables simultaneous drying of two sets of AAC blocks. After drying, one AAC block can be immediately subjected to a permeability test without waiting for the previous block to dry again, thus improving testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of filtration equipment, and more particularly to a test device for the performance of autoclaved aerated concrete blocks. Background Technology

[0002] Autoclaved aerated concrete (AAC) blocks are porous concrete products made primarily from fly ash, lime, cement, gypsum, and slag, with the addition of appropriate amounts of foaming agents, regulators, and bubble stabilizers. The process involves batching, mixing, pouring, static curing, cutting, and high-pressure autoclaving. The unit volume weight of AAC blocks is one-third that of clay bricks; their thermal insulation performance is 3-4 times that of clay bricks; their sound insulation performance is twice that of clay bricks; their impermeability is more than twice that of clay bricks; and their fire resistance is 6-8 times that of reinforced concrete. The masonry strength of the blocks is approximately 80% of the block's own strength.

[0003] After the autoclaved aerated concrete (AAC) blocks are produced, tests are required to measure their properties, such as dry density, moisture content, water absorption, compressive strength, splitting tensile strength, flexural strength, and axial compressive strength, according to the standard GB_T11969-2020.

[0004] Based on existing technology, when conducting tests on the dry density, moisture content, and impermeability of autoclaved aerated concrete (AAC) blocks, it is impossible to perform comprehensive tests on the dry density and moisture content properties of AAC blocks. A single electric heating drying oven can only process a single AAC block sample, resulting in low testing efficiency. Summary of the Invention

[0005] This invention provides a test device for the performance of autoclaved aerated concrete (AAC) blocks, which solves the problems of existing technologies that cannot comprehensively test the dry density and moisture content of AAC blocks, and that a single electric heating drying oven can only process a single AAC block sample, resulting in low testing efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A performance testing device for autoclaved aerated concrete (AAC) blocks includes a base, with an insulated drying chamber on top of the base. The drying chamber includes a support frame bolted to the outer wall of the base's top and a chamber body internally coated with a ceramic fiber insulation layer. The support frame houses three heating mechanisms, each including several fans and several tilted PTC heaters. The chamber body contains two support mechanisms, each including a mounting base with two slots on one outer wall, a fixing frame fixed to the top outer wall of the mounting base, a ceramic fiber plate connected to the top outer wall of the fixing frame via heat-resistant silicone, and a pressure sensor bolted to the bottom outer wall of the ceramic fiber plate. A constant-temperature water tank is located on top of the base, comprising a water tank bolted to the outer wall of the base's top, two heat exchange tubes with one end penetrating and fixed to the lower outer wall of one side of the water tank, and several through holes on the outer wall. The support plate has a fixed seat welded to one outer wall of the top of the base, and the fixed seat is provided with two unloading mechanisms. The unloading mechanism includes a heat-resistant cylinder bolted to one outer wall of the fixed seat, a connecting plate bolted to one end of the piston rod of the heat-resistant cylinder, and two thermal expansion rods respectively fixed to one outer wall of the connecting plate. Both sides of the box are provided with heat recovery mechanisms. The heat recovery mechanism includes a mounting box bolted to one outer wall of the box, several ceramic fiber water-blocking plates inclinedly arranged in the mounting box, a connecting frame welded to one outer wall of the mounting box, a cooling fan bolted to one outer wall of the mounting box, and a dust cover bolted to one outer wall of the connecting frame. Both mounting boxes are provided with heat exchange components. The heat exchange components include a mounting plate welded to the inner wall of the middle of the mounting box and several heat pipes respectively penetrating and embedded in the outer wall of the mounting plate. Both mounting boxes are provided with a conveying component on one side.

[0008] Preferably, the support frame has air inlets that are evenly distributed on both outer walls, the box is equipped with several temperature sensors, four positioning rods are bolted to the bottom inner wall of the box, and two doors are hinged to one outer wall of the box.

[0009] Preferably, a mounting plate is fixed on the inner wall of the middle of the support frame, and several fans are respectively connected to the outer wall of the bottom of the mounting plate by bolts. A mounting frame is fixed through and fixed on the inner wall of the bottom of the box, and several PTC heaters are respectively embedded in the mounting frame. The several PTC heaters are connected to the PID temperature controller by wires.

[0010] The above scheme uses a fan, PTC heater, temperature sensor and PID temperature controller to precisely control the temperature inside the chamber. The tilted PTC heater guides the hot air into the chamber at an angle. The hot air hits the inner wall of the chamber and is deflected, which makes the inside of the chamber heat up quickly.

[0011] Preferably, the mounting base has two sliding grooves on its bottom outer wall, and two positioning rods are respectively slidably fitted into the two sliding grooves. The mounting base and the fixing frame are integrally machined from Invar alloy. A heat insulation box is fixed on the bottom outer wall of the ceramic fiber board, and the heat insulation box has a sandwich layer filled with aerogel felt.

[0012] The above scheme uses ceramic fiberboard to support 100mm×100mm×100mm autoclaved aerated concrete blocks, and pressure sensors to weigh the autoclaved aerated concrete blocks. The combination of ceramic fiberboard and heat insulation box ensures that the pressure sensor is not affected by the internal temperature of the box.

[0013] Preferably, a drain pipe is fixedly installed on the lower inner wall of one side of the water tank, and a drain valve is screwed to one end of the drain pipe. The support plate is fixedly installed on the inner wall of the water tank above the heat exchange tube.

[0014] Preferably, two stabilizing plates are bolted to one outer wall of the fixing plate, and the two stabilizing plates are bolted to the top outer wall of the base.

[0015] Preferably, the thermal expansion insert is made of Hastelloy X, and two limiting rods are welded on one outer wall of the connecting plate, and the two limiting rods are respectively inserted through and slidably installed on the outer wall of the fixing plate.

[0016] With the above method, after the autoclaved aerated concrete (AAC) blocks are dried, the chamber door is opened, and the piston rod of one of the heat-resistant cylinders moves, causing the connecting plate and two thermal expansion rods to move. This positions the two thermal expansion rods in the two slots on the mounting base. The heat inside the chamber causes the thermal expansion rods to expand. Since the mounting base is made of Invar alloy, which has a small coefficient of thermal expansion, the thermal expansion rods form an interference fit in the slots. Then, the piston rod of the heat-resistant cylinder returns to its original position, placing the mounting base on the top outer wall of the water tank. The chamber door is then closed, allowing the AAC blocks to cool at room temperature for a certain period of time. After this time, the AAC blocks are placed on the support plate for a permeability test.

[0017] Preferably, a lid is bolted to one side of the outer wall of the recycling bin, and the lid is abutted against one side of the outer wall of several ceramic fiber water-blocking plates by high-temperature resistant silicone. A recycling pipe is fixed on the lower outer wall of one side of the lid, and the upper end of the recycling pipe is fixed to the inner wall of the top of the bin.

[0018] Preferably, the conveying assembly includes a frustum-shaped air guide shroud bolted to one side of the outer wall of the mounting box, a connecting pipe fixed to one side of the inner wall of the air guide shroud, an electromagnetic three-way valve screwed to the lower outer wall of the connecting pipe, a first conveying pipe screwed to the inner wall of one end of the electromagnetic three-way valve, and a second conveying pipe screwed to the inner wall of one end of the electromagnetic three-way valve. One end of the first conveying pipe is fixed to the lower inner wall of one side of the box, one end of the second conveying pipe is fixed to the inner wall of one side of the water tank, and one end of the heat exchange tube is fixed to the inner wall of the second conveying pipe.

[0019] The above scheme uses a recovery pipe to transfer heat from the box to the installation box. The heat rises and impacts multiple inclined ceramic fiber water-blocking plates. Due to inertia, the moisture in the hot air accumulates on the ceramic fiber water-blocking plates. The hot air continues to rise and comes into contact with multiple heat pipes. The phase change material inside the heat pipes undergoes a phase change when heated, releasing heat above the heat pipes. The cooling fan operates to transfer the heat from the top of the heat pipes to the box or the heat exchange pipes. The heat exchange pipes exchange heat with the water in the water tank, keeping the water temperature inside the water tank constant.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The pressure sensor weighs the autoclaved aerated concrete blocks. The fan, PTC heater, temperature sensor and PID temperature controller precisely control the temperature inside the chamber. The tilted PTC heater guides the hot air into the chamber at an angle. The hot air hits the inner wall of the chamber and is deflected, which makes the inside of the chamber heat up quickly. The ceramic fiber board and the heat insulation box work together to make the pressure sensor unaffected by the temperature inside the chamber.

[0022] 2. After the autoclaved aerated concrete (AAC) blocks have dried, open the chamber door. The piston rod of one of the heat-resistant cylinders moves, causing the connecting plate and two thermal expansion rods to move, positioning the two thermal expansion rods in the two slots on the mounting base. The heat inside the chamber causes the thermal expansion rods to expand. Because the mounting base is made of Invar alloy with a small coefficient of thermal expansion, the thermal expansion rods form an interference fit in the slots. Then, the piston rod of the heat-resistant cylinder returns to its original position, positioning the mounting base on the top outer wall of the water tank. Close the chamber door and allow the AAC blocks to cool at room temperature for a certain period of time. Then, place the AAC blocks on the support plate for a permeability test.

[0023] In summary, the present invention can simultaneously dry two sets of autoclaved aerated concrete (AAC) blocks. After drying, the impermeability test of one of the AAC blocks can be performed immediately without waiting for the previous AAC block to be dried again, thus improving the testing efficiency. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the overall main structure of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0025] Figure 2 This is a schematic diagram of the overall back structure of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0026] Figure 3 This is a partial cross-sectional structural diagram of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0027] Figure 4 This is a schematic diagram of the main structure of the heat-insulated drying oven of the autoclaved aerated concrete block performance testing device proposed in this invention.

[0028] Figure 5 This is a schematic diagram of the heating mechanism of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0029] Figure 6 This is a bottom view schematic diagram of the support structure of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0030] Figure 7 This is a cross-sectional schematic diagram of the support structure of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0031] Figure 8 This is a schematic diagram of the main structure of the constant temperature water bath of the autoclaved aerated concrete block performance testing device proposed in this invention.

[0032] Figure 9 This is a schematic diagram of the unloading mechanism of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0033] Figure 10 This is a cross-sectional schematic diagram of the heat recovery mechanism of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0034] Figure 11 This is a schematic diagram of the main structure of the heat exchange component of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0035] Figure 12 This is a side view of the conveying component of a test device for the performance of autoclaved aerated concrete blocks proposed in this invention.

[0036] In the diagram: 1. Base; 2. Insulated drying oven; 201. Support frame; 202. Oven body; 203. Positioning rod; 204. Oven door; 3. Heating mechanism; 301. Mounting block; 302. Fan; 303. Mounting frame; 304. PTC heater; 4. Support mechanism; 401. Mounting base; 402. Fixing frame; 403. Ceramic fiber board; 404. Pressure sensor; 405. Insulated box; 5. Constant temperature water bath; 501. Water tank; 502. Heat exchange tube; 503. Support plate; 6. Fixing plate; 7. Unloading machine 701. Heat-resistant cylinder; 702. Connecting plate; 703. Thermal expansion rod; 704. Limiting rod; 8. Heat recovery mechanism; 801. Recovery box; 802. Ceramic fiber water-blocking plate; 803. Box cover; 804. Recovery pipe; 805. Connecting frame; 806. Cooling fan; 807. Dust cover; 9. Heat exchange assembly; 901. Mounting plate; 902. Heat pipe; 10. Conveying assembly; 101. Air guide hood; 102. Connecting pipe; 103. Electromagnetic three-way valve; 104. First conveying pipe; 105. Second conveying pipe. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Example 1, referring to Figure 1-7A test device for the performance of autoclaved aerated concrete (AAC) blocks includes a base 1, a heat-insulated drying chamber 2 on top of the base 1, a support frame 201 bolted to the outer wall of the top of the base 1, and a chamber body 202 internally coated with a ceramic fiber insulation layer. Air inlets are evenly distributed on both sides of the outer wall of the support frame 201. Several temperature sensors are installed inside the chamber body 202. Four positioning rods 203 are bolted to the inner wall of the bottom of the chamber body 202. Two doors 204 are hinged to one side of the outer wall of the chamber body 202. Three heating mechanisms 3 are installed inside the support frame 201. Each heating mechanism 3 includes several fans 302 and several inclined PTC heaters 304. A mounting plate 301 is fixed to the inner wall of the middle part of the support frame 201. Several fans 302 are bolted to the outer wall of the bottom of the mounting plate 301. A through-hole and fixed... The enclosure 202 is equipped with a mounting frame 303, in which several PTC heaters 304 are respectively embedded. The PTC heaters 304 are connected to a PID temperature controller via wires. The enclosure 202 is equipped with two support mechanisms 4. The support mechanism 4 includes a mounting base 401 with two slots on one outer wall, a fixing frame 402 fixed to the top outer wall of the mounting base 401, a ceramic fiber board 403 connected to the top outer wall of the fixing frame 402 by heat-resistant silicone, and a pressure sensor 404 connected to the bottom outer wall of the ceramic fiber board 403 by bolts. The bottom outer wall of the mounting base 401 has two sliding grooves, in which two positioning rods 203 are slidably sleeved in the two sliding grooves respectively. The mounting base 401 and the fixing frame 402 are integrally machined from Invar alloy. A heat insulation box 405 is fixed to the bottom outer wall of the ceramic fiber board 403. The heat insulation box 405 has a sandwich layer filled with aerogel felt.

[0039] Example 2, refer to Figure 8-9A test device for the performance of autoclaved aerated concrete (AAC) blocks includes a constant-temperature water bath 5. The constant-temperature water bath 5 comprises a water tank 501 bolted to the top outer wall of a base 1, two heat exchange tubes 502 with one end respectively penetrating and fixed to the lower outer wall of one side of the water tank 501, and a support plate 503 with several through holes on its outer wall. A drain pipe is fixed to the lower inner wall of one side of the water tank 501. A ceramic heating rod can be installed on the inner wall at the bottom of the water tank 501. A drain valve is screwed to one end of the drain pipe. The support plate 503 is fixed to the inner wall of the water tank 501 above the heat exchange tubes 502. A fixing seat 6 is welded to one side of the top outer wall of the base 1. Two stabilizing plates are bolted to one side of the outer wall of plate 6. The two stabilizing plates are bolted to the top outer wall of base 1. The fixed base 6 is provided with two unloading mechanisms 7. The unloading mechanism 7 includes a heat-resistant cylinder 701 bolted to one side of the outer wall of fixed base 6, a connecting plate 702 bolted to one end of the piston rod of heat-resistant cylinder 701, and two thermal expansion rods 703 respectively fixed to one side of the outer wall of connecting plate 702. The thermal expansion rods 703 are made of Hastelloy X. Two limiting rods 704 are welded to one side of the outer wall of connecting plate 702. The two limiting rods 704 pass through and slide on the outer wall of fixed plate 6.

[0040] Example 3, referring to Figure 10-12A test device for the performance of autoclaved aerated concrete (AAC) blocks includes a heat recovery mechanism 8. The heat recovery mechanism 8 comprises a mounting box 801 bolted to one side of the outer wall of a housing 202, several ceramic fiber water-blocking plates 802 inclinedly disposed within the mounting box 801, a connecting frame 805 welded to one side of the outer wall of the mounting box 801, a cooling fan 806 bolted to one side of the outer wall of the mounting box 801, and a dust cover 807 bolted to one side of the outer wall of the connecting frame 805. A box cover 803 is bolted to one side of the outer wall of the recovery box 801, and the box cover 803 is abutted against one side of the outer wall of the several ceramic fiber water-blocking plates 802 using high-temperature resistant silicone. A recovery pipe 804 is fixed to the lower outer wall of one side of the box cover 803, and the upper end of the recovery pipe 804 is fixed to the top inner wall of the housing 202. Both mounting boxes 801 are equipped with heat exchange components 9. The heat exchange assembly 9 includes an installation plate 901 welded to the inner wall of the middle part of the installation box 801 and several heat pipes 902 that pass through and are embedded in the outer wall of the installation plate 901. Each of the two installation boxes 801 is provided with a conveying assembly 10. The conveying assembly 10 includes a frustum-shaped air guide shroud 101 bolted to the outer wall of one side of the installation box 801, a connecting pipe 102 fixed to the inner wall of one side of the air guide shroud 101, an electromagnetic three-way valve 103 screwed to the lower outer wall of the connecting pipe 102, a first conveying pipe 104 screwed to the inner wall of one end of the electromagnetic three-way valve 103, and a second conveying pipe 105 screwed to the inner wall of one end of the electromagnetic three-way valve 103. One end of the first conveying pipe 104 is fixed to the lower inner wall of one side of the box body 202, one end of the second conveying pipe 105 is fixed to the inner wall of one side of the water tank 501, and one end of the heat exchange pipe 502 is fixed to the inner wall of the second conveying pipe 105.

[0041] Ceramic fiberboard 403 supports 100mm×100mm×100mm autoclaved aerated concrete (AAC) blocks, pressure sensor 404 weighs the AAC blocks, and fan 302, PTC heater 304, temperature sensor, and PID temperature controller precisely control the temperature inside chamber 202. The tilted PTC heater 304 guides hot air obliquely into chamber 202, where it impacts the inner wall and is deflected, allowing for rapid internal cooling. Heating up, the ceramic fiber board 403 and the heat insulation box 405 work together to ensure that the pressure sensor 304 is not affected by the internal temperature of the box 202. After the autoclaved aerated concrete blocks are dried, the box door 204 is opened. The piston rod of one of the heat-resistant cylinders 701 moves, driving the connecting plate 702 and the two thermal expansion rods 703 to move, so that the two thermal expansion rods 703 are located in the two slots on the mounting base 401. The heat inside the box 202 causes the thermal expansion rods 703 to expand. Because the mounting base 401 adopts... Using Invar alloy, which has a low coefficient of thermal expansion, the thermal expansion insert 703 forms an interference fit within the slot. Subsequently, the piston rod of the heat-resistant cylinder 701 returns to its original position, placing the mounting base 401 on the top outer wall of the water tank 501. The tank door 204 is closed, allowing the autoclaved aerated concrete blocks to cool at room temperature for a certain period. The autoclaved aerated concrete blocks are then placed on the support plate 503 for a permeability test. The recovery pipe 804 transfers heat from the tank 202 to the mounting box 801, where the heat rises and impacts multiple... An inclined ceramic fiber water-blocking plate 802, under the action of inertia, causes the moisture in the hot air to accumulate on the ceramic fiber water-blocking plate 802. The hot air continues to rise and comes into contact with multiple heat pipes 902. The phase change material inside the heat pipes 902 undergoes a phase change when heated and releases heat to the top of the heat pipes 902. The cooling fan 806 operates to transfer the heat from the top of the heat pipes 902 to the cabinet 202 or the heat exchange pipe 502. The heat exchange pipe 502 exchanges heat with the water in the water tank 501, so that the water temperature inside the water tank 501 remains constant.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A test device for the performance of autoclaved aerated concrete blocks, comprising a base (1), characterized in that, The base (1) is provided with a heat-insulating drying box (2) on top. The heat-insulating drying box (2) includes a support frame (201) connected to the outer wall of the top of the base (1) by bolts and a box body (202) with a ceramic fiber heat insulation layer sprayed inside. The support frame (201) is provided with three heating mechanisms (3), each of which includes several fans (302) and several inclined PTC heaters (304). The housing (202) is provided with two support mechanisms (4). The support mechanism (4) includes a mounting base (401) with two slots on one outer wall, a fixing frame (402) fixed on the top outer wall of the mounting base (401), a ceramic fiber plate (403) connected to the top outer wall of the fixing frame (402) by heat-resistant silicone, and a pressure sensor (404) connected to the bottom outer wall of the ceramic fiber plate (403) by bolts. The base (1) is provided with a constant temperature water tank (5) at the top. The constant temperature water tank (5) includes a water tank (501) connected to the outer wall of the top of the base (1) by bolts, two heat exchange tubes (502) with one end of each tube passing through and fixed to the lower outer wall of the side of the water tank (501), and a support plate (503) with several through holes on the outer wall. A fixed seat (6) is welded to one side of the outer wall of the top of the base (1), and two unloading mechanisms (7) are provided on the fixed seat (6). The unloading mechanism (7) includes a heat-resistant cylinder (701) connected to one side of the outer wall of the fixed seat (6) by bolts, a connecting plate (702) connected to one end of the piston rod of the heat-resistant cylinder (701) by bolts, and two thermal expansion rods (703) respectively fixed to one side of the outer wall of the connecting plate (702). The box (202) is provided with heat recovery mechanisms (8) on both sides. The heat recovery mechanism (8) includes a mounting box (801) bolted to the outer wall of one side of the box (202), several ceramic fiber water-blocking plates (802) inclinedly arranged in the mounting box (801), a connecting frame (805) welded to the outer wall of one side of the mounting box (801), a cooling fan (806) bolted to the outer wall of one side of the mounting box (801), and a dust cover (807) bolted to the outer wall of one side of the connecting frame (805). Both of the mounting boxes (801) are equipped with heat exchange components (9), which include a mounting plate (901) welded to the inner wall of the middle part of the mounting box (801) and a number of heat pipes (902) that pass through and are embedded in the outer wall of the mounting plate (901). Each of the two mounting boxes (801) is provided with a conveying assembly (10) on one side.

2. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, The support frame (201) has air inlets that are evenly distributed on both sides of the outer wall. The box (202) is equipped with several temperature sensors. Four positioning rods (203) are bolted to the bottom inner wall of the box (202). Two boxes (204) are hinged to one side of the outer wall of the box (202).

3. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, An installation plate (301) is fixedly installed on the inner wall of the middle part of the support frame (201), and several fans (302) are respectively connected to the bottom outer wall of the installation plate (301) by bolts. An installation frame (303) is installed through and fixed on the bottom inner wall of the box (202), and several PTC heaters (304) are respectively embedded in the installation frame (303). Several PTC heaters (304) are connected to the PID temperature controller through wires.

4. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 2, characterized in that, The mounting base (401) has two sliding grooves on its bottom outer wall, and two positioning rods (203) are respectively slidably sleeved in the two sliding grooves. The mounting base (401) and the fixing frame (402) are integrally cut and formed from Invar alloy. The ceramic fiber board (403) has a heat insulation box (405) fixed on its bottom outer wall, and the heat insulation box (405) has a sandwich layer inside, which is filled with aerogel felt.

5. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, A drain pipe is fixedly installed on the lower inner wall of one side of the water tank (501), and a drain valve is screwed to one end of the drain pipe. The support plate (503) is fixedly installed on the inner wall of the water tank (501) above the heat exchange tube (502).

6. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, Two stabilizing plates are bolted to one side of the outer wall of the fixing plate (6), and the two stabilizing plates are bolted to the top outer wall of the base (1).

7. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, The thermal expansion insert (703) is made of Hastelloy X. Two limiting rods (704) are welded on one outer wall of the connecting plate (702), and the two limiting rods (704) are respectively inserted through and slidably installed on the outer wall of the fixing plate (6).

8. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, The outer wall of the recycling bin (801) is bolted to a bin cover (803), and the bin cover (803) is abutted against the outer wall of several ceramic fiber water-blocking plates (802) by high temperature resistant silicone. A recycling pipe (804) is fixed on the lower outer wall of the bin cover (803), and the upper end of the recycling pipe (804) is fixed on the inner wall of the top of the bin body (202).

9. The test device for the finished product performance of autoclaved aerated concrete blocks according to claim 1, characterized in that, The conveying assembly (10) includes a frustum-shaped air guide hood (101) bolted to the outer wall of the mounting box (801), a connecting pipe (102) fixed to the inner wall of the air guide hood (101), an electromagnetic three-way valve (103) screwed to the lower outer wall of the connecting pipe (102), a first conveying pipe (104) screwed to the inner wall of one end of the electromagnetic three-way valve (103), and a second conveying pipe (105) screwed to the inner wall of one end of the electromagnetic three-way valve (103). One end of the first conveying pipe (104) is fixed to the lower inner wall of the box body (202), one end of the second conveying pipe (105) is fixed to the inner wall of one side of the water tank (501), and one end of the heat exchange pipe (502) is fixed to the inner wall of the second conveying pipe (105).

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