Thermal shock resistance detection device for refractory bricks

Abstract

The utility model discloses a refractory brick thermal shock resistance detection device, which relates to the refractory brick detection technical field, and comprises a heating box and a cooling box, the side of the heating box is provided with the cooling box, the front side and the rear side of the heating box are correspondingly provided with sliding grooves, and the sliding grooves at the two sides are internally and movably provided with door curtain plates. A driving mechanism for driving the door curtain plate is arranged on the heating box, heating pipes are laid on the two sides of the interior of the heating box, limiting guide rails are correspondingly arranged at the bottom of the interior of the heating box, detection brick boxes are placed in the limiting guide rails on the two sides, and clamping mechanisms are arranged in the detection brick boxes; the clamping mechanism adopts the design of a spring and a sliding connecting piece, the problem that the structural strength and stability are reduced due to thermal stress in a traditional bolt and iron block fixing mode is solved, and the spring and the sliding connecting piece can better adapt to thermal expansion and contraction of the refractory bricks in the heating and cooling process. Therefore, the stability and accuracy of the refractory brick in the detection process are ensured.

Description

Technical Field

[0001] This utility model relates to the field of refractory brick testing technology, specifically to a refractory brick thermal shock resistance testing device. Background Technology

[0002] Refractory bricks are an indispensable basic brick in high-temperature industries. Currently, refractory bricks are mainly used in production equipment in metallurgy, petrochemicals, cement, ceramics and other industries. In addition to withstanding high temperatures during operation, they must also resist the damage caused by rapid temperature changes. The ability of refractory bricks to resist rapid temperature changes without damage is called the thermal shock resistance of refractory bricks. Thermal shock damage is one of the two major causes of damage to refractory bricks. Therefore, the thermal shock resistance of refractory bricks is an important property.

[0003] Traditional thermal shock resistance testing devices for refractory bricks typically use bolts to fix the bricks and additional iron blocks between them to ensure stability. Firstly, as solid structures, the bolts and iron blocks are subject to thermal stress during heating, leading to a decrease in structural strength and stability, thus affecting the accuracy of the test. Furthermore, the difference in thermal expansion coefficients between the bolts / iron blocks and the refractory bricks can generate additional stress during heating and cooling, further impacting the performance evaluation of the refractory bricks. Therefore, this invention proposes a thermal shock resistance testing device for refractory bricks. Utility Model Content

[0004] The purpose of this invention is to provide a thermal shock resistance testing device for refractory bricks, in order to solve the problems mentioned in the background art. Traditional thermal shock resistance testing devices for refractory bricks typically use bolts to fix the bricks and add fixing iron blocks between the bricks to ensure their stability. First, as solid structures, the bolts and fixing iron blocks are affected by thermal stress during the heating process, which leads to a decrease in structural strength and stability, thereby affecting the accuracy of the test. Furthermore, the difference in the coefficient of thermal expansion between the bolts and iron blocks and the refractory bricks may generate additional stress during heating and cooling, further affecting the performance evaluation of the refractory bricks.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A thermal shock resistance testing device for refractory bricks includes a heating chamber and a cooling chamber. The cooling chamber is located beside the heating chamber. Sliding grooves are provided on the front and rear sides of the heating chamber. Door curtains are movably installed in the sliding grooves on both sides. A driving mechanism for driving the door curtains is provided on the heating chamber. Heating tubes are laid on both sides inside the heating chamber, and a limiting guide rail is provided at the bottom of the heating chamber. A test brick box is placed in the limiting guide rail on both sides, and a clamping mechanism is provided inside the test brick box.

[0007] Optionally, the drive mechanism is provided in two sets, symmetrically arranged about the front and rear sides of the heating box. The drive mechanism includes a first fixed seat, which is distributed vertically about the front side of the heating box. A lead screw is provided in the upper and lower parts of the first fixed seat. The end of the lead screw is connected to a driven gear. A dual-axis motor is provided above the top of the heating box. The output end of the dual-axis motor is fixedly connected to a connecting shaft through a second fixed seat provided at the top of the heating box. The end of the connecting shaft away from the dual-axis motor is connected to a main gear that meshes with the driven gear.

[0008] Optionally, the lead screw is externally threaded with a threaded sleeve, and a connecting rod is fixedly connected to the outer surface of the threaded sleeve. The other end of the connecting rod is fixedly connected to a fastener provided on the front side of the door curtain panel.

[0009] Optionally, the detection brick box is equipped with slide rails on both sides of its interior.

[0010] Optionally, two sets of clamping mechanisms are provided correspondingly inside the brick box. The clamping mechanism includes a base plate fixedly installed on the inner wall of the brick box. A support spring is connected to the middle of the base plate. Support rods are symmetrically provided on the sides of the base plate with respect to the support spring. Support plates are connected to the other ends of the support rods on both sides. A straight sliding hole is opened on the side of the support plate. A pin is movably installed in the straight sliding hole. A tension spring is movably connected between the pins on both sides. A concave slider is slidably installed in the support plate. A rotating component is movably connected to the concave slider through a through pin. A connecting component is fixedly and movably connected to the other end of the rotating component. The side of the connecting component facing the base plate is fixedly connected to the support spring.

[0011] Optionally, the two connecting members on opposite sides are connected to a fire-resistant plate that slides along the slide rail.

[0012] Optionally, a water pump is fixedly installed at the top of the cooling box, and the output end of the water pump is connected to a connecting pipe. An installation ring is provided at the top inside the cooling box, and several spray pipes are provided at the bottom of the installation ring. The spray pipes are connected to the connecting pipe.

[0013] Optionally, a temperature controller is fixedly installed on the top of the heating box.

[0014] The beneficial effects of this utility model are:

[0015] The clamping mechanism of this invention adopts a spring and sliding connector design, which avoids the problem of reduced structural strength and stability caused by thermal stress in the traditional bolt and iron block fixing method. The spring and sliding connector can better adapt to the thermal expansion and contraction of refractory bricks during heating and cooling, thereby ensuring the stability and accuracy of refractory bricks during the testing process. The concave slider and rotating part design in the clamping mechanism allows the refractory plate to be flexibly adjusted to adapt to refractory bricks of different specifications and shapes, improving the versatility of the device. Moreover, the clamping mechanism adopts a non-rigid connection method, which can effectively reduce the impact of thermal stress on refractory bricks and testing device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a refractory brick thermal shock resistance testing device according to the present invention;

[0017] Figure 2 This is a top view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the drive curtain panel in this utility model;

[0019] Figure 4 This is a partial view of the interior of the cooling box in this utility model;

[0020] Figure 5 This is a schematic diagram of the clamping mechanism inside the brick box in this utility model.

[0021] The numbers on the map are:

[0022] 1. Heating box; 101. Sliding track; 102. Door curtain panel; 103. Temperature controller; 104. Heating element; 105. Limiting guide rail;

[0023] 2. Cooling tank; 201. Water pump; 202. Connecting pipe; 203. Mounting ring; 204. Spray pipe;

[0024] 3. Drive mechanism; 301. First fixed seat; 302. Lead screw; 303. Driven gear; 304. Main gear; 305. Connecting shaft; 306. Second fixed seat; 307. Dual-axis motor; 308. Threaded sleeve; 309. Connecting rod; 310. Fixing component;

[0025] 4. Inspect the brick box; 401, the slide rail;

[0026] 5. Clamping mechanism; 501. Base plate; 502. Support rod; 503. Support plate; 504. Straight sliding hole; 505. Concave slider; 506. Pin; 507. Rotating component; 508. Connecting component; 509. Support spring; 510. Tension spring;

[0027] 6. Fire-resistant board. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] The preferred embodiment of the present invention will be described below.

[0030] Please see Figure 1-5 As shown, the refractory brick thermal shock resistance testing device includes a heating box 1 and a cooling box 2. The cooling box 2 is located next to the heating box 1. The heating box 1 is used to heat the refractory brick, and the cooling box 2 is used to rapidly cool the heated refractory brick to simulate its thermal shock resistance performance under high temperature environment. The front and rear sides of the heating box 1 are provided with corresponding sliding grooves 101. Door curtains 102 are movably installed in the sliding grooves 101 on both sides. A temperature controller 103 is fixedly installed on the top of the heating box 1. The heating box 1 is provided with a driving mechanism 3 for driving the door curtains 102. Heating tubes 104 are laid on both sides inside the heating box 1, and a limiting guide rail 105 is provided at the bottom inside the heating box 1. A test brick box 4 is placed in the limiting guide rails 105 on both sides. A clamping mechanism 5 is provided inside the test brick box 4.

[0031] Furthermore, slide rails 401 are provided on both sides of the inner wall of the brick box 4.

[0032] Furthermore, the drive mechanism 3 is provided in two sets, and is symmetrically arranged about the front and rear sides of the heating box 1. The drive mechanism 3 includes a first fixed seat 301, which is distributed vertically about the front side of the heating box 1. The upper and lower first fixed seats 301 are provided with a lead screw 302. The end of the lead screw 302 is connected to a driven gear 303. A dual-axis motor 307 is provided above the top of the heating box 1. The output end of the dual-axis motor 307 is fixedly connected to a connecting shaft 305 through a second fixed seat 306 provided at the top of the heating box 1. The end of the connecting shaft 305 away from the dual-axis motor 307 is connected to a main gear 304 that meshes with the driven gear 303. A threaded sleeve 308 is threadedly connected to the outside of the lead screw 302. A connecting rod 309 is fixedly connected to the outer surface of the threaded sleeve 308, and the other end of the connecting rod 309 is fixedly connected to a fixing member 310 provided at the front side of the curtain panel 102.

[0033] Specifically, when the dual-axis motor 307 starts, its output end drives the connecting shaft 305 to rotate. Its two output ends drive the main gears 304 of the two sets of drive mechanisms 3 to rotate through the connecting shaft 305. The main gear 304 meshes with the driven gear 303, so the driven gear 303 also rotates, driving the lead screw 302 to rotate. Since the threaded sleeve 308 is threaded to the outside of the lead screw 302, when the lead screw 302 rotates, the threaded sleeve 308 will move linearly along the lead screw 302. The connecting rod 309 converts the movement of the threaded sleeve 308 into the sliding of the door curtain 102 in the sliding groove 101, thereby realizing the opening and closing of the door curtain 102 and improving the convenience and efficiency of the detection process.

[0034] Furthermore, a water pump 201 is fixedly installed at the top of the cooling box 2, and the output end of the water pump 201 is connected to a connecting pipe 202. An installation ring 203 is provided at the top inside the cooling box 2, and several spray pipes 204 are arranged around the bottom of the installation ring 203. The spray pipes 204 are connected to the connecting pipe 202. When it is necessary to cool the heated refractory bricks, the water pump 201 is started first. The water pump 201 starts to work, transports water from the outside, and delivers it to the spray pipes 204 through the connecting pipe 202. The cooling water flows in the spray pipes 204 and sprays out from the spray holes to form a uniform water curtain. These water curtains directly cover the surface of the refractory bricks and remove the heat of the refractory bricks through heat exchange.

[0035] In another embodiment provided by this utility model, such as Figure 5 As shown, two sets of clamping mechanisms 5 are correspondingly arranged inside the brick box 4. The clamping mechanism 5 includes a base plate 501 fixedly installed on the inner wall of the brick box 4. A support spring 509 is connected to the middle of the base plate 501. Support rods 502 are symmetrically arranged on the side of the base plate 501 about the support springs 509. The other ends of the support rods 502 on both sides are connected to support plates 503. A straight sliding hole 504 is opened on the side of the support plate 503. A pin 506 is movably installed in the straight sliding hole 504. A tension spring 510 is movably connected between the two pins 506. A concave slider 505 is slidably installed in the support plate 503. A rotating part 507 is movably connected to the concave slider 505 through the through pin 506. A connecting part 508 is fixedly and movably connected to the other end of the rotating part 507. The side of the connecting part 508 facing the base plate 501 is fixedly connected to the support spring 509.

[0036] Specifically, before the refractory brick is placed into the testing box, the clamping mechanism is in its initial state. At this time, the tension spring 510 is in an unstretched state, and the connecting piece 508 maintains a certain tension under the action of the supporting spring 509, but does not generate a clamping force on the refractory brick. The concave slider 505 and the rotating piece 507 are also in a relatively stationary position. When the refractory brick is placed into the testing brick box 4, it contacts the refractory plate 6, and the refractory plate 6 will be subjected to an inward pushing force. When the refractory plate 6 is subjected to the pushing force, the force is transmitted to the concave slider 505 through the connecting piece 508 and the rotating piece 507. After being subjected to the force, the concave slider 505 will move inward along the straight sliding hole 504, and at the same time drive the pin 506 to move. Since the pin 506 is connected to The tension spring 510 is stretched at both ends, so when the pin 506 moves, the tension spring 510 will be stretched. Under the thrust of the refractory plate 6, the connecting piece 508 will move along the direction of the supporting spring 509 to adjust its position. With the stretching of the tension spring 510 and the movement of the connecting piece 508, the refractory plate 6 will gradually move closer to the refractory brick and eventually clamp it. Since the design of the tension spring 510 and the connecting piece 508 has a certain degree of elasticity and adjustability, the clamping mechanism 5 can adapt to refractory bricks of different specifications and shapes. At the same time, this design can also reduce the impact of thermal stress on the refractory brick and the testing device, and improve the reliability of the test results.

[0037] Furthermore, the two connecting pieces 508 are connected to a refractory plate 6 that slides on the slide rail 401 on opposite sides. When the refractory plate 6 is pushed by the refractory brick, it moves with the assistance of the slide rail 401.

[0038] During use, as the refractory bricks are inserted, the refractory plate 6 experiences a pushing force from the refractory bricks until it makes close contact with them. During this process, the connector 508, through the interaction of the rotating component 507 and the concave slider 505, as well as the tension of the tension spring 510, jointly adjusts the position and clamping force of the refractory plate 6. When the refractory plate 6 is in close contact with the refractory bricks, it experiences a reaction force from the refractory bricks. This reaction force is transmitted through the connector 508 to the tension spring 510 and the support spring 509, forming a force balance system. This system ensures that the refractory board 6 maintains a clamping force on the refractory bricks during heating and cooling, preventing them from loosening due to thermal expansion or contraction. Then, the door curtain 102 of the heating chamber 1 is opened by the drive mechanism 3, and the refractory bricks are pushed into the test brick box 4, ensuring that they are located within the limit guide rails 105 on both sides. Then, the temperature controller 103 is turned on, the required heating temperature and time are set, and the heating tube 104 in the heating chamber 1 is started to begin the heating process. After the refractory bricks are heated, the door curtain 102 is pulled up by the drive mechanism 3 to pull the test brick box 4 out from the other door curtain 102, and then it is placed in the cooling chamber 2 for cooling. After the cooling process is completed, the tested refractory bricks are taken out, and the surface and internal structure of the refractory bricks are observed to check for defects such as cracks and deformation. Based on the test results, the thermal shock resistance of the refractory bricks is evaluated.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting thermal shock resistance of a refractory brick, characterized by: Including heating box (1) and cooling box (2), the side of the heating box (1) is provided with the cooling box (2), the front and back sides of the heating box (1) are provided with sliding grooves (101) correspondingly, the door curtain plate (102) is movably arranged in the sliding groove (101) on both sides, the driving mechanism (3) for driving the door curtain plate (102) is arranged on the heating box (1), the heating tube (104) is arranged on both sides of the inside of the heating box (1), and the limit guide rail (105) is arranged on the bottom of the heating box (1), the detection brick box (4) is placed in the limit guide rail (105) on both sides, and the detection brick box (4) is arranged in the clamping mechanism (5).

2. The device for detecting thermal shock resistance of refractory bricks according to claim 1, wherein: The driving mechanism (3) is provided with two groups, and is symmetrically arranged about the front and back sides of the heating box (1), the driving mechanism (3) includes a first fixed seat (301), the first fixed seat (301) is distributed on the front side of the heating box (1) up and down, the first fixed seat (301) is arranged in the screw rod (302), the end of the screw rod (302) is connected with the from gear (303), the top of the heating box (1) is provided with a double-shaft motor (307), the output end of the double-shaft motor (307) is fixedly connected with a connecting shaft (305) through the second fixed seat (306) arranged on the top of the heating box (1), and the end of the connecting shaft (305) away from the double-shaft motor (307) is connected with the main gear (304) engaged with the from gear (303).

3. The apparatus according to claim 2, wherein: The outer thread of the screw rod (302) is connected with a threaded sleeve (308), the outer surface of the threaded sleeve (308) is fixedly connected with a connecting rod (309), and the other end of the connecting rod (309) is fixedly connected with a fixing piece (310) arranged on the front side of the door curtain plate (102).

4. The device according to claim 1, wherein: The inside of the detection brick box (4) is provided with a sliding rail (401) on both sides.

5. The device according to claim 1, wherein: The clamping mechanism (5) is arranged in two groups in the detection brick box (4), the clamping mechanism (5) includes a bottom plate (501) fixedly arranged on the inner wall of the detection brick box (4), the middle part of the bottom plate (501) is connected with a supporting spring (509), the side part of the bottom plate (501) is symmetrically provided with a supporting rod (502) about the supporting spring (509), the other end of the supporting rod (502) on both sides is connected with a supporting plate (503), and a straight sliding hole (504) is formed in the side part of the supporting plate (503), the straight sliding hole (504) is movably provided with a pin shaft (506), the pin shaft (506) between the two sides is movably connected with a tension spring (510), the supporting plate (503) is slidably provided with a concave sliding block (505), the concave sliding block (505) is movably connected with a rotating piece (507) through the penetrating pin shaft (506), the other end of the rotating piece (507) is movably connected with a connecting piece (508), and the side of the connecting piece (508) towards the bottom plate (501) is fixedly connected with the supporting spring (509).

6. The apparatus according to claim 5, wherein: The refractory plate (6) is slidably connected with the sliding rail (401) on the opposite side of the connecting piece (508) on both sides.

7. The device according to claim 1, wherein: The top end of the cooling box (2) is fixedly provided with a water pump (201), and the output end of the water pump (201) is connected with a connecting pipe (202); the top end of the inside of the cooling box (2) is provided with a mounting ring (203), and the bottom of the mounting ring (203) is provided with a plurality of spray pipes (204) in a ring shape; and the spray pipes (204) are communicated with the connecting pipe (202).

8. The device according to claim 1, wherein: The top end of the heating box (1) is fixedly provided with a temperature controller (103).

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