Sample preparation equipment for testing the thermal conductivity of ceramic fiber modules

Abstract

This invention relates to the technical field of equipment for measuring ceramic fiber modules, and in particular to a sample preparation device for testing the thermal conductivity of ceramic fiber modules. The device includes: a support frame, comprising legs and a top frame; a telescopic mechanism connected to the top frame, capable of moving or locking along the top frame; a rotary drive mechanism connected to the telescopic mechanism; a multi-functional clamping mechanism, comprising ribs and an annular base plate, the lower end face of which has an annular placement groove, into which an annular saw blade or pressure block is detachably connected; a height adjustment mechanism, with downwardly extending height adjustment mechanisms on both sides of the top frame; and a cutting mechanism, comprising an electrically controlled track, an electrically controlled slider, a third telescopic drive component, and a saw blade. This invention can quickly complete the flat and circumferential cutting of ceramic fiber modules, and can quickly proceed to the circumferential cutting operation after flat cutting without moving the ceramic fiber module to change its surface placement position, resulting in high efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of equipment for measuring ceramic fiber modules, and in particular to a sample preparation device for testing the thermal conductivity of ceramic fiber modules. Background Technology

[0002] Ceramic fiber modules are a new type of refractory lining product designed to simplify and accelerate kiln construction and improve the overall integrity of the furnace lining. High-temperature refractory ceramic fiber modules have specific physical property requirements, such as bulk density, slag ball content, thermal conductivity, and rebound rate. Sampling tests are required on the manufactured ceramic fiber modules. When testing the thermal conductivity, the heated surface of the ceramic fiber module needs to be sawn flat, and a disc is drilled. The drilled disc is then cut out and placed in an alumina fiber disc for thickness measurement.

[0003] Currently, there is no dedicated equipment capable of quickly performing flattening and circumferential cutting of ceramic fiber modules. During flattening, for ease of operation, personnel typically place the heated surface sideways and cut from top to bottom with a wire saw. However, during circumferential cutting, the flattened surface usually needs to be placed upwards. The entire process is complex and inefficient, and the ceramic fiber modules are prone to bulging during the transition between flattening and circumferential cutting, affecting the operation progress. Summary of the Invention

[0004] The purpose of this invention is to provide a sample preparation device for testing the thermal conductivity of ceramic fiber modules, which overcomes the shortcomings of the prior art, and can quickly complete the flat cutting and circumferential cutting of ceramic fiber modules. After the flat cutting, it can quickly enter the circumferential cutting operation without moving the ceramic fiber modules to change the placement position of their surfaces, thus achieving high efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] A sample preparation device for testing the thermal conductivity of ceramic fiber modules includes:

[0007] The support frame includes spaced-apart legs and a top frame disposed between the legs;

[0008] A telescopic mechanism is connected to a top frame and can move or lock along the top frame. The telescopic mechanism includes a top plate, a first telescopic drive member, and a bottom plate. The top plate is connected to the fixed end of the first telescopic drive member, and the moving end of the first telescopic drive member is connected to the bottom plate.

[0009] A rotary drive mechanism, which is connected to a telescopic mechanism and is driven by the telescopic mechanism to move up and down;

[0010] The multi-functional clamping mechanism includes a rib and an annular base plate. One end of the rib is connected to the rotating end of the rotary drive mechanism, and the other end is connected to the annular base plate. An annular positioning groove is formed on the lower end face of the annular base plate. An annular saw blade or a pressure block is detachably connected in the annular positioning groove. The pressure block is used to assist in planar sawing and prevent the cut part of the ceramic fiber module from bulging and deforming. The annular saw blade is used to complete the annular sawing of the planar surface after the planar cut.

[0011] The height adjustment mechanism includes a downwardly extending height adjustment mechanism on both sides of the top frame. The height adjustment mechanism includes a second telescopic drive component and an end plate connected to the movable end of the second telescopic drive component.

[0012] The cutting mechanism includes an electrically controlled track, an electrically controlled slider, a third telescopic drive component, and a sawtooth strip. Two parallel electrically controlled tracks are connected between the left and right end plates. Each electrically controlled track is equipped with an electrically controlled slider, and each electrically controlled slider is equipped with a third telescopic drive component. A sawtooth strip is provided between two third telescopic drive components. The electrically controlled track and the electrically controlled slider work together to achieve the displacement and position locking of the electrically controlled slider on the electrically controlled track through electrical control.

[0013] When a ceramic fiber module needs to be sampled for measuring its thermal conductivity, the ceramic fiber module is first flat-cut, and then the end face of the flat-cut ceramic fiber module is circularly sawn. The operation consists of two parts, and the steps are as follows:

[0014] Flat cutting steps:

[0015] 1.1 The ceramic fiber module is located between the legs below the top frame of the support, with the folded surface of the ceramic fiber module with the strongest heat resistance facing upwards, and the side is positioned by straps.

[0016] 1.2 The annular base plate of the multi-functional clamping mechanism is first connected to the pressure block. The telescopic mechanism moves on the top frame and locks in a suitable position. The first telescopic drive component of the telescopic mechanism drives the pressure block to move down to limit the ceramic fiber module and prevent the ceramic fiber module from bulging and deforming during the subsequent cutting process.

[0017] 1.3 The second telescopic drive of the height adjustment mechanism drives the end plate to descend, and the moving cutting mechanism moves down to a suitable cutting position, so that the saw blade of the cutting mechanism is at a suitable cutting height;

[0018] 1.4 The electric control slider moves on the electric control track through an electric control method. The two third telescopic drive components move to drive the saw blade to make a regular sawing motion back and forth, so as to quickly complete the sawing operation of the ceramic fiber module.

[0019] Circumferential cutting steps:

[0020] 2.1 The first telescopic drive component moves upward, removes the pressure block, connects the annular base plate with the annular saw blade, and resets the cutting mechanism and height adjustment mechanism;

[0021] 2.2 When the ring saw blade comes into contact with the ceramic fiber module, the rotary drive mechanism starts, driving the ring saw blade to perform a ring cut on the ceramic fiber module. At the same time, the telescopic mechanism gradually pushes down until the ring saw blade has cut the target amount on the ceramic fiber module.

[0022] 2.3 The circumferentially cut ceramic fiber modules can be removed by using external cross-cutting serrations or other structures.

[0023] The entire operation process described above is highly coherent and efficient compared to traditional manual sawing and circumferential cutting. It also eliminates the need to move or alter the end face position of the ceramic fiber module.

[0024] Furthermore, the telescopic mechanism also includes a first guide post and a first linear bearing. The first guide post extends from the upper end of the base plate towards the top plate, and the first linear bearing is provided on the top plate. One end of the first guide post passes through the first linear bearing. The first guide post and the first linear bearing cooperate to improve the smoothness of movement of the first telescopic drive component. The height adjustment mechanism also includes a second guide post and a second linear bearing. The second guide post is provided on the upper end face of the end plate, and the second linear bearing is provided on the top frame. The second guide post passes upward through the second linear bearing. The second guide post and the second linear bearing cooperate to improve the smoothness of movement of the second telescopic drive component.

[0025] Furthermore, the top frame of the bracket is provided with a moving channel that allows the telescopic mechanism to move. The top frame plates on both sides of the moving channel are provided with moving guide holes. A first threaded rod is provided on the top plate of the telescopic mechanism or the fixed end of the first telescopic drive component. After the first threaded rod passes through the moving guide hole, it is locked by a first nut. When the first nut is loosened, the entire telescopic mechanism can move along the top frame. During the movement, it is guided by the cooperation between the first threaded rod and the moving guide hole.

[0026] Furthermore, the rotary drive mechanism is a rotary motor, and one end of the rib is connected to the rotating shaft of the rotary motor.

[0027] Furthermore, the inner wall and / or outer wall of the annular substrate are connected to a positioning member that locks into the annular positioning groove. The inner wall and / or outer wall of the annular substrate are provided with openings that communicate with the annular positioning groove. The upper end of the annular saw blade extends into the annular positioning groove and is locked by the positioning member. The saw teeth at the lower edge of the annular saw blade extend out of the annular positioning groove. The positioning member enables convenient replacement and locking of the annular saw blade. The openings that communicate with the annular positioning groove ensure that the cut ceramic fiber module fragments do not block the annular positioning groove and are beneficial to improving the heat dissipation effect of the annular saw blade in the annular positioning groove.

[0028] Furthermore, the upper end face of the pressure block is provided with a plug-in plate, which is inserted into the receiving groove with an interference fit. The outer wall of the plug-in plate is covered with a rubber layer, which enables flexible insertion and extraction and interference fit between the flexible plate and the receiving groove.

[0029] Furthermore, a U-shaped clamp is provided on the movable end of the third telescopic drive component, and a bolt is connected to the U-shaped clamp and inserted into the inner cavity of the U-shaped clamp. The end of the saw blade extends into the U-shaped clamp corresponding to its position, and the bolt is locked and abuts against the saw blade. The U-shaped clamp and bolt are mainly used to ensure the quick replacement of the saw blade. A flexible rubber layer can be provided on the contact surface between the bolt and the saw blade to protect the rigidity of the rectangular bar.

[0030] Furthermore, the first telescopic drive component is a cylinder, a hydraulic cylinder, or an electric telescopic rod; the second telescopic drive component is a cylinder, a hydraulic cylinder, or an electric telescopic rod; and the third telescopic drive component is a cylinder, a hydraulic cylinder, or an electric telescopic rod.

[0031] Furthermore, each of the legs of the bracket is provided with an adjustable limiting mechanism extending inward. One or more adjustable limiting mechanisms are provided on the same leg. The adjustable limiting mechanism includes a support plate, a second threaded rod that passes vertically through the support plate, a pressure plate located at the lower end of the second threaded rod, and two second nuts located on the second threaded rod, one of which is located above the support plate and the other is located below the support plate. The support plate is provided with an elongated hole through which the second threaded rod passes.

[0032] Furthermore, a ceramic fiber module size measuring device is placed between the legs under the top frame. The ceramic fiber module size measuring device is mainly used in the process of measuring the size parameters and rebound rate of the ceramic fiber module.

[0033] The ceramic fiber module size measuring device includes:

[0034] The base can be pre-drawn with the placement position of the ceramic fiber module to facilitate the experimenter's initial positioning of the ceramic fiber module. The base has four accommodating holes symmetrically arranged in the center.

[0035] The limiting plates are installed on the base, and four limiting plates are provided to limit the four sides of the ceramic fiber module. Regardless of whether the placement position of the ceramic fiber module is pre-marked on the base, the limiting plates are needed to correct the placement position of the ceramic fiber module. The limiting plate includes a first plate and a second plate. The first plate is located inside the receiving hole, and the second plate is located outside the receiving hole. The first plate and the second plate are detachably connected. When it is necessary to measure the length, the second plate of the two limiting plates in the width direction can be removed, the length of one position can be measured, the ceramic fiber module can be moved, and the length of the other position can be measured. After taking several sets of data, the average value can be calculated for greater accuracy. The method for measuring the width is similar and will not be described in detail.

[0036] The plate adjustment mechanism is installed in each of the four receiving holes. The plate adjustment mechanism includes a lead screw, a lead screw seat, and a rotary drive component. The lead screw is rotatably disposed in the receiving hole. The lead screw seat is connected to the lead screw and is driven by the rotation of the lead screw to move along the length direction of the receiving hole. One end of the lead screw is connected to the rotary drive component. The limiting plate is connected to the lead screw seat. The rotary drive component can be a motor structure that electrically drives the lead screw to rotate, or a rocker wheel that manually drives the lead screw to rotate. The rotary drive component drives the lead screw to rotate, and the lead screw drives the lead screw seat to move back and forth, thereby driving the limiting plate to adjust its position, so that it moves closer to or further away from the side of the ceramic fiber module.

[0037] A height measuring device includes a bracket, a sleeve, a graduated tube, and a pressure plate. The bracket is rotatably mounted on a base, and the sleeve is supported and connected to the bracket. A graduated tube is movably fitted inside the sleeve, and a pressure plate is positioned below the graduated tube. The position of the pressure plate corresponds to the center of the ceramic fiber module. The center position is a range, approximately 40% of the upper surface area of ​​the ceramic fiber module, and can be any position close to the center. When the ceramic fiber module is not placed on the base, the pressure plate is in contact with the upper surface of the base. At this time, the reading corresponding to the graduation line on the graduated tube at the lower edge of the sleeve is 0. When the ceramic fiber module is to be placed on the base, the graduated tube is first lifted to facilitate the smooth placement of the ceramic fiber module. After the ceramic fiber module is placed and its side contacts the corresponding limiting plate, the graduated tube is lowered, and the pressure plate contacts the center of the upper surface of the ceramic fiber module. At this time, the lower edge of the sleeve and the graduated tube cooperate to read the thickness value of the ceramic fiber module.

[0038] The adjustable limiting mechanism's pressure plate presses against the base of the ceramic fiber module size measuring device. Through this mechanism, the ceramic fiber module size measuring device is integrated with the support frame. The structure on the ceramic fiber module size measuring device helps to limit the side position of the ceramic fiber module. During the sampling inspection of ceramic fiber modules, many parameters often require testing and calculation. The adjustable limiting mechanism allows the ceramic fiber module size measuring device to be directly used for thermal conductivity testing after measuring parameters such as height, width, and length of the ceramic fiber module.

[0039] Furthermore, corresponding limiting plates are positioned on the two sides opposite the ceramic fiber module. Between the two corresponding limiting plates, at least the upper middle part of one limiting plate has a hollow structure. A distance measuring sensor is embedded in the cavity of the limiting plate. The height of the distance measuring sensor is higher than the height of the ceramic fiber module. The laser emitting end of the distance measuring sensor is flush with the end face of the limiting plate facing the ceramic fiber module. The terminals of the distance measuring sensor are connected to a serial port display board. The serial port display board can be installed on the end face of the limiting plate away from the ceramic fiber module. When it is necessary to measure the length, the second plates of the two limiting plates in the width direction can be removed to measure one of the positions. After measuring the length, move the ceramic fiber module and measure the length at another location. Take several sets of data and calculate the average for greater accuracy. The method for measuring the width is similar and will not be repeated here. When the length and width are measured, and the ceramic fiber module size measuring device is to be used in the sample preparation equipment for testing the thermal conductivity of the ceramic fiber module, in order not to affect the operation of other structures, the second plate needs to be removed and another plate is inserted into the first plate, which can be called the third plate. After the third plate is connected to the first plate, its height is also lower than the height of the position to be cut. This can both limit the side of the ceramic limiting module and not affect the flat cutting operation of the ceramic fiber module.

[0040] Furthermore, the base is provided with a rotation limiting component. When the bracket rotates to the position of the pressure plate corresponding to the position of the middle part of the ceramic fiber module, it stops moving due to the restriction of the rotation limiting component. The rotation limiting component can be a limiting block or can be implemented by other existing structures. The sleeve of the height measuring device is provided with the scale of the vernier caliper's auxiliary scale. At this time, the sleeve needs to be a structure with a partially open side. The scale tube and the scale on the sleeve are matched, similar to the setting of the main scale and auxiliary scale of a vernier caliper.

[0041] The beneficial effects of the present invention are as follows: Compared with the prior art, the sample preparation equipment for testing the thermal conductivity of ceramic fiber modules of the present invention has the following advantages: (1) It can quickly complete the flat cutting and circumferential cutting of ceramic fiber modules. After the flat cutting, it can quickly enter the circumferential cutting operation without moving the ceramic fiber modules to change the placement position of their surfaces, which is highly efficient; (2) Through the adjustable limiting mechanism, the ceramic fiber module size measuring device used for measuring dimensional parameters and measuring rebound rate can be directly put into the sample preparation for testing thermal conductivity after measuring the height, width, length and other parameters of the ceramic fiber module. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure in the flat-cut state of Embodiment 1 of the present invention (the annular substrate is connected to the pressure block).

[0043] Figure 2 This is a schematic diagram of another angle structure in the flat-cut state of Embodiment 1 of the present invention (the annular substrate is connected to the pressure block).

[0044] Figure 3 This is a schematic diagram of the structure in the drilling and cutting state of Embodiment 1 of the present invention (the annular substrate is connected to the annular saw blade).

[0045] Figure 4 This is a schematic diagram of the disassembled structure of the annular substrate, annular saw blade, and pressure block in Embodiment 1 of the present invention;

[0046] Figure 5 This is a schematic diagram of the cutting mechanism structure of Embodiment 1 of the present invention (excluding the electrically controlled track).

[0047] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention (the second plate of the limiting plate has not been removed; in actual use, it should be removed and replaced with other plates that do not affect the flat cutting operation).

[0048] Figure 7 This is a schematic diagram of the ceramic fiber module size measuring device added in Embodiment 2 of the present invention;

[0049] Figure 8 This is a schematic diagram of the structure of the ceramic fiber module size measuring device after it swings, as added in Embodiment 2 of the present invention;

[0050] Among them, 1 is a bracket, 11 is a leg, 12 is a top frame, 13 is a moving channel, 14 is a moving guide hole, 2 is a telescopic mechanism, 21 is a top plate, 22 is a first telescopic drive component, 23 is a bottom plate, 24 is a first guide post, 25 is a first linear bearing, 26 is a first threaded rod, 27 is a first nut, 3 is a rotary drive mechanism, 4 is a multi-functional clamping mechanism, 41 is a rib, 42 is an annular base plate, 44 is an annular positioning groove, 45 is a positioning component, 46 is an opening, 5 is a pressure block, 51 is a plug-in plate, 6 is a height adjustment mechanism, 61 is a second telescopic drive component, 62 is an end plate, 63 is a second guide post, 64 is a second linear bearing, 7 is a... Cutting mechanism, 71 electrically controlled rail, 72 electrically controlled slider, 73 third telescopic drive component, 74 saw toothed blade, 75 U-shaped clamp, 8 adjustable limit mechanism, 81 support plate, 82 second threaded rod, 83 pressure plate, 84 second nut, 85 long strip hole, 9 ceramic fiber module size measuring device, 91 base, 92 accommodating hole, 93 limit plate, 94 lead screw, 95 lead screw nut, 96 rotary drive component, 97 frame, 98 sleeve, 99 graduated tube, 910 flat plate, 911 distance sensor, 912 serial port display board, 913 rotation limit component, 10 ring saw blade. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0052] Example 1

[0053] like Figure 1-5 In the illustrated embodiment, a sample preparation device for testing the thermal conductivity of a ceramic fiber module includes:

[0054] The support 1 includes spaced-apart legs 11 and a top frame 12 disposed between the legs 11;

[0055] Telescopic mechanism 2 is connected to top frame 12. Telescopic mechanism 2 can move or lock along top frame 12. Telescopic mechanism 2 includes top plate 21, first telescopic drive member 22 and bottom plate 23. Top plate 21 is connected to the fixed end of first telescopic drive member 22 and the moving end of first telescopic drive member 22 is connected to bottom plate 23.

[0056] A rotary drive mechanism 3 is connected to a telescopic mechanism 2 and is driven by the telescopic mechanism 2 to move up and down.

[0057] The multi-functional clamping mechanism 4 includes a rib 41 and an annular base plate 42. One end of the rib 41 is connected to the rotating end of the rotary drive mechanism 3, and the other end is connected to the annular base plate 42. An annular positioning groove 44 is provided on the lower end surface of the annular base plate 42. An annular saw blade 10 or a pressure block 5 is detachably connected in the annular positioning groove 44. The pressure block 5 is used to assist in planar sawing and prevent the cut part of the ceramic fiber module from bulging and deforming. The annular saw blade 10 is used to complete the annular sawing of the planar surface after the planar cut.

[0058] The height adjustment mechanism 6 is provided on both sides of the top frame 12. The height adjustment mechanism 6 includes a second telescopic drive member 61 and an end plate 62 connected to the movable end of the second telescopic drive member 61.

[0059] The cutting mechanism 7 includes an electrically controlled track 71, an electrically controlled slider 72, a third telescopic drive component 73, and a serrated bar 74. Two parallel electrically controlled tracks 71 are connected between the left and right end plates 62. An electrically controlled slider 72 is provided on each electrically controlled track 71, and a third telescopic drive component 73 is installed on each electrically controlled slider 72. A serrated bar 74 is provided between two third telescopic drive components 73. The electrically controlled track 71 and the electrically controlled slider 72 cooperate to achieve the displacement and position locking of the electrically controlled slider 72 on the electrically controlled track 71 through electrical control.

[0060] When a ceramic fiber module needs to be sampled for measuring its thermal conductivity, the ceramic fiber module is first flat-cut, and then the end face of the flat-cut ceramic fiber module is circularly sawn. The operation consists of two parts, and the steps are as follows:

[0061] Flat cutting steps:

[0062] 1.1 The ceramic fiber module is located between the legs 11 below the top frame 12 of the support 1, with the folded surface of the ceramic fiber module with the strongest heat resistance facing upwards, and the side is positioned by straps.

[0063] 1.2 The annular base plate 42 of the multi-functional clamping mechanism 4 is first connected to the pressure block 5. The telescopic mechanism 2 moves on the top frame 12 and locks in a suitable position. The first telescopic drive member 22 of the telescopic mechanism 2 drives the pressure block 5 to move down to limit the ceramic fiber module and prevent the ceramic fiber module from bulging and deforming during the subsequent cutting process.

[0064] 1.3 The second telescopic drive 61 of the height adjustment mechanism 6 drives the end plate 62 to descend, and the moving cutting mechanism 7 moves down to a suitable cutting position, so that the saw tooth 74 of the cutting mechanism 7 is at a suitable cutting height;

[0065] 1.4 By means of electrical control, the electronically controlled slider 72 moves on the electronically controlled track 71, and the two third telescopic drive components 73 move to drive the saw toothed bar 74 to perform a sawing action back and forth in a regular manner, so as to quickly complete the sawing operation of the ceramic fiber module.

[0066] Circumferential cutting steps:

[0067] 2.1 The first telescopic drive component 22 moves upward, removes the pressure block 5, connects the annular base plate 42 with the annular saw blade, and resets the cutting mechanism 7 and the height adjustment mechanism 6;

[0068] 2.2 When the ring saw blade 10 comes into contact with the ceramic fiber module, the rotary drive mechanism 3 is started, driving the ring saw blade 10 to perform ring cutting on the ceramic fiber module. At the same time, the telescopic mechanism 2 is pushed down gradually until the ring saw blade 10 has cut the target amount on the ceramic fiber module.

[0069] 2.3 The circumferentially cut ceramic fiber modules can be removed by using external cross-cutting serrations or other structures.

[0070] The entire operation process described above is highly coherent and efficient compared to traditional manual sawing and circumferential cutting. It also eliminates the need to move or change the end face position of the ceramic fiber module.

[0071] In this embodiment, the telescopic mechanism 2 further includes a first guide post 24 and a first linear bearing 25. The first guide post 24 is provided on the upper end of the base plate 23 extending towards the top plate 21, and the first linear bearing 25 is provided on the top plate 21. One end of the first guide post 24 passes through the first linear bearing 25. The first guide post 24 and the first linear bearing 25 cooperate to improve the smoothness of movement of the first telescopic drive member 22. The height adjustment mechanism 6 further includes a second guide post 63 and a second linear bearing 64. The second guide post 63 is provided on the upper end surface of the end plate 62, and the second linear bearing 64 is provided on the top frame 12. The second guide post 63 passes upward through the second linear bearing 64. The second guide post 63 and the second linear bearing 64 cooperate to improve the smoothness of movement of the second telescopic drive member 61.

[0072] In this embodiment, the top frame 12 of the bracket 1 is provided with a moving channel 13 that enables the telescopic mechanism 2 to move. The top frame 12 plates on both sides of the moving channel 13 are provided with moving guide holes 14. The top plate 21 of the telescopic mechanism 2 or the fixed end of the first telescopic drive member 22 is provided with a first threaded rod 26. After the first threaded rod 26 passes through the moving guide hole 14, it is locked by a first nut 27. When the first nut 27 is loosened, the entire telescopic mechanism 2 can be translated along the top frame 12. During the translation process, it is guided by the cooperation between the first threaded rod 26 and the moving guide hole 14.

[0073] In this embodiment, the rotary drive mechanism 3 is a rotary motor, and one end of the rib 41 is connected to the rotating shaft of the rotary motor.

[0074] In this embodiment, the inner wall and / or outer wall of the annular substrate 42 are connected to a positioning member 45 that locks into the annular positioning groove 44. The positioning member 45 can be a bolt. The inner wall and / or outer wall of the annular substrate 42 are provided with openings 46 that communicate with the annular positioning groove 44. The upper end of the annular saw blade 10 extends into the annular positioning groove 44 and is locked by the positioning member 45. The saw teeth at the lower edge of the annular saw blade 10 extend out of the annular positioning groove 44. The positioning member 45 enables convenient replacement and locking of the annular saw blade 10. The openings 46 that communicate with the annular positioning groove 44 ensure that the cut ceramic fiber module fragments do not block the annular positioning groove 44 and are beneficial to improving the heat dissipation effect of the annular saw blade 10 in the annular positioning groove 44.

[0075] In this embodiment, the upper end face of the pressure block 5 is provided with a plug plate 51, which is inserted into the annular positioning groove 44 with an interference fit. The outer wall of the plug plate 51 is covered with a rubber layer, which enables flexible insertion and removal and interference fit between the flexible plug and the annular positioning groove 44.

[0076] In this embodiment, a U-shaped clamp 75 is provided on the movable end of the third telescopic drive member 73. A bolt is connected to the U-shaped clamp 75 and passes through the inner cavity of the U-shaped clamp 75. The end of the saw tooth 74 extends into the U-shaped clamp 75 corresponding to its position. The bolt is locked and abuts against the saw tooth 74. The U-shaped clamp 75 and the bolt are mainly used to ensure the quick replacement of the saw tooth 74. A flexible rubber layer can be provided on the contact surface between the bolt and the saw tooth 74 to protect the rigidity of the saw tooth.

[0077] In this embodiment, the first telescopic drive component 22 is a cylinder; the second telescopic drive component 61 is a cylinder; and the third telescopic drive component 73 is a cylinder.

[0078] Example 2

[0079] Example 2 is basically the same as Example 1, except that:

[0080] like Figure 6-8 As shown, in this embodiment, each leg 11 of the bracket 1 is provided with an adjustable limiting mechanism 8 extending inward. One or more adjustable limiting mechanisms 8 are provided on the same leg 11. The adjustable limiting mechanism 8 includes a support plate 81, a second threaded rod 82 that passes vertically through the support plate 81, a pressure plate 83 located at the lower end of the second threaded rod 82, and two second nuts 84 located on the second threaded rod 82. One second nut 84 is located above the support plate 81, and the other second nut 84 is located below the support plate 81. The support plate 81 is provided with an elongated hole 85, through which the second threaded rod 82 passes.

[0081] In this embodiment, a ceramic fiber module size measuring device 9 is placed between the legs 11 below the top frame 12. The ceramic fiber module size measuring device 9 is mainly used in the process of measuring the size parameters and rebound rate of the ceramic fiber module.

[0082] The ceramic fiber module size measuring device 9 includes:

[0083] The base 91 has a pre-drawn position for the placement of the ceramic fiber module, which facilitates the experimenter to initially position the ceramic fiber module. The base 91 has four accommodating holes 92 arranged symmetrically in the center.

[0084] The limiting plates 93 are disposed on the base 91. Four limiting plates 93 are provided to limit the four sides of the ceramic fiber module. Regardless of whether the placement position of the ceramic fiber module is pre-drawn on the base 91, the placement position of the ceramic fiber module needs to be corrected by the limiting plates 93. The limiting plates 93 include a first plate and a second plate. The first plate is located inside the receiving hole 92, and the second plate is located outside the receiving hole 92. The first plate and the second plate are detachably connected. When it is necessary to measure the length, the second plates of the two limiting plates 93 in the width direction can be removed, the length of one position can be measured, the ceramic fiber module can be moved, and the length of the other position can be measured. After measuring several sets of data, the average value can be calculated for greater accuracy. The method for measuring the width is similar and will not be described in detail.

[0085] The plate adjustment mechanism is installed in each of the four receiving holes 92. The plate adjustment mechanism includes a lead screw 94, a lead screw seat 95, and a rotary drive 96. The lead screw 94 is rotatably disposed in the receiving hole 92. The lead screw seat 95 is connected to the lead screw 94 and is driven by the rotation of the lead screw 94 to move along the length direction of the receiving hole 92. One end of the lead screw 94 is connected to the rotary drive 96. The limiting plate 93 is connected to the lead screw seat 95. The rotary drive 96 can be a motor structure that electrically drives the lead screw 94 to rotate, or a rocker wheel that manually drives the lead screw 94 to rotate. The rotary drive 96 drives the lead screw 94 to rotate, and the lead screw 94 drives the lead screw seat 95 to move back and forth, thereby driving the limiting plate 93 to adjust its position, so that it is closer to or further away from the side of the ceramic fiber module.

[0086] The height measuring device includes a frame 97, a sleeve 98, a graduated tube 99, and a plate 910. The frame 97 is rotatably mounted on a base 91. After the measurement is completed, the frame 97 can be turned to one side without affecting other operations. The sleeve 98 is supported and connected to the frame 97. A graduated tube 99 is movably fitted inside the sleeve 98. The plate 910 is located below the graduated tube 99. The position of the plate 910 corresponds to the middle position of the ceramic fiber module. The middle position is a range, and any position close to the middle is acceptable, approximately occupying the upper surface of the ceramic fiber module. 40% of the area. When the ceramic fiber module is not placed on the base 91, the plate 910 is in contact with the upper surface of the base 91. At this time, the reading corresponding to the scale line on the scale tube 99 at the lower edge of the sleeve 98 is 0. When the ceramic fiber module is to be placed on the base 91, the scale tube 99 is lifted first to facilitate the smooth placement of the ceramic fiber module. After the ceramic fiber module is placed and its side contacts the corresponding limiting plate 93, the scale tube 99 is lowered. The plate 910 contacts the middle of the upper surface of the ceramic fiber module. At this time, the lower edge of the sleeve 98 and the scale tube 99 cooperate to read the thickness value of the ceramic fiber module.

[0087] The adjustable limiting mechanism 8's pressure plate 83 presses against the base 91 of the ceramic fiber module size measuring device 9. Through the adjustable limiting mechanism 8, the ceramic fiber module size measuring device 9 is integrated with the frame 97. The structure on the ceramic fiber module size measuring device 9 serves to limit the side position of the ceramic fiber module. During the sampling inspection of ceramic fiber modules, many parameters often require testing and calculation. The adjustable limiting mechanism 8 allows the ceramic fiber module size measuring device 9 to be directly used for thermal conductivity testing after measuring parameters such as height, width, and length of the ceramic fiber module.

[0088] In this embodiment, the limiting plates 93 corresponding to the two sides opposite to the ceramic fiber module are positioned correspondingly. Between the two corresponding limiting plates 93, one limiting plate 93 has at least a hollow structure in its upper middle part. A ranging sensor 911 is embedded in the cavity of the limiting plate 93. The height of the ranging sensor 911 is higher than the height of the ceramic fiber module. The laser emitting end of the ranging sensor 911 is flush with the end face of the limiting plate 93 facing the ceramic fiber module. The terminals of the ranging sensor 911 are connected to a serial port display board 912. The serial port display board 912 can be installed on the end face of the limiting plate 93 away from the ceramic fiber module. When it is necessary to measure the length, the two limiting plates 93 in the width direction can be positioned. After removing the second plate, measure the length at one location, move the ceramic fiber module, and measure the length at another location. Take several sets of data and calculate the average for greater accuracy. The method for measuring the width is similar and will not be repeated here. When the length and width are measured, and the ceramic fiber module size measuring device needs to be used in the sample preparation equipment for testing the thermal conductivity of the ceramic fiber module, the second plate needs to be removed to avoid affecting the operation of other structures. Another plate, which can be called the third plate, is inserted into the first plate. After the third plate is connected to the first plate, its height is also lower than the height of the position to be cut. This can both limit the side of the ceramic limiting module and not affect the flat cutting operation of the ceramic fiber module.

[0089] In this embodiment, a rotation limiting member 913 is provided on the base 91. When the frame 97 rotates to the position of the plate 910 corresponding to the position of the middle part of the ceramic fiber module, it stops moving due to the restriction of the rotation limiting member 913. The rotation limiting member 913 can be a limiting block or can be implemented by other existing structures.

[0090] In some embodiments, the sleeve 98 of the height measuring device is provided with the scale of a vernier caliper. In this case, the sleeve 98 needs to be a structure with a partially open side. The scale tube 99 matches the scale on the sleeve 98, similar to the arrangement of the main scale and the auxiliary scale of a vernier caliper.

[0091] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A sample preparation device for testing the thermal conductivity of ceramic fiber modules, characterized in that, include: The support frame includes spaced-apart legs and a top frame disposed between the legs; A telescopic mechanism is connected to a top frame and can move or lock along the top frame. The telescopic mechanism includes a top plate, a first telescopic drive member, and a bottom plate. The top plate is connected to the fixed end of the first telescopic drive member, and the moving end of the first telescopic drive member is connected to the bottom plate. A rotary drive mechanism, which is connected to a telescopic mechanism and is driven by the telescopic mechanism to move up and down; A multi-functional clamping mechanism includes a rib and an annular base plate. One end of the rib is connected to the rotating end of the rotary drive mechanism, and the other end is connected to the annular base plate. An annular positioning groove is provided on the lower end face of the annular base plate, and an annular saw blade or a pressure block can be detachably connected in the annular positioning groove. The height adjustment mechanism includes a downwardly extending height adjustment mechanism on both sides of the top frame. The height adjustment mechanism includes a second telescopic drive component and an end plate connected to the movable end of the second telescopic drive component. The cutting mechanism includes an electrically controlled track, an electrically controlled slider, a third telescopic drive component, and a sawtooth strip. Two parallel electrically controlled tracks are connected between the left and right end plates. An electrically controlled slider is provided on each electrically controlled track, and a third telescopic drive component is installed on each electrically controlled slider. A sawtooth strip is provided between two third telescopic drive components. When a sample is prepared for measuring the thermal conductivity of a ceramic fiber module, the ceramic fiber module is positioned between the legs below the top frame of the support. The annular base plate of the multi-functional clamping mechanism is first connected to the pressure block. The telescopic mechanism moves the pressure block downward to limit the ceramic fiber module. The second telescopic drive of the height adjustment mechanism moves the end plate downward, so that the saw blade of the cutting mechanism is at a suitable cutting height. The electronically controlled slider moves on the electronically controlled track. Under the drive of the third telescopic mechanism, the saw blade completes the cutting of the upper layer of the ceramic fiber module. Then, the first telescopic drive moves upward to remove the pressure block. The annular base plate is connected to the annular saw blade. The cutting mechanism and the height adjustment mechanism are reset. The first telescopic drive moves the annular saw blade downward. The rotation drive mechanism drives the annular saw blade to rotate in conjunction with the first telescopic drive to complete the circumferential cutting of the ceramic fiber module. Each of the legs of the bracket is provided with an adjustable limiting mechanism extending inward. The adjustable limiting mechanism includes a support plate, a second threaded rod that passes vertically through the support plate, a pressure plate located at the lower end of the second threaded rod, and two second nuts located on the second threaded rod, one of which is located above the support plate and the other is located below the support plate. The support plate is provided with an elongated hole through which the second threaded rod passes. A ceramic fiber module size measuring device is placed between the legs below the top frame. The ceramic fiber module size measuring device includes: The base has four symmetrically arranged receiving holes at its center; A limiting plate is provided on the base. Four limiting plates are provided to limit the four sides of the ceramic fiber module. Each limiting plate includes a first plate body and a second plate body. The first plate body is located inside the receiving hole, and the second plate body is located outside the receiving hole. The first plate body and the second plate body are detachably connected. The plate body adjustment mechanism is installed in each of the four receiving holes. The plate body adjustment mechanism includes a lead screw, a lead screw seat and a rotary drive component. The lead screw is rotatably disposed in the receiving hole. The lead screw seat is connected to the lead screw and is driven by the rotation of the lead screw to move along the length direction of the receiving hole. One end of the lead screw is connected to the rotary drive component. The limiting plate is connected to the lead screw seat. The plate body adjustment mechanism drives the limiting plate to move on the base and thus move closer to or away from the side of the ceramic fiber module. A height measuring device, comprising a frame, a sleeve, a graduated tube, and a plate. The frame is rotatably mounted on a base, and the sleeve is supported and connected to the frame. A graduated tube with scales is movably fitted inside the sleeve, and a plate is positioned below the graduated tube. The position of the plate corresponds to the position of the middle part of the ceramic fiber module. The pressure plate of the adjustable limiting mechanism presses against the base of the ceramic fiber module size measuring device.

2. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The telescopic mechanism further includes a first guide post and a first linear bearing. The first guide post extends from the upper end of the base plate to the top plate, and the first linear bearing is provided on the top plate. One end of the first guide post passes through the first linear bearing. The height adjustment mechanism further includes a second guide post and a second linear bearing. The second guide post is provided on the upper end of the end plate, and the second linear bearing is provided on the top frame. The second guide post passes upward through the second linear bearing.

3. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The top frame of the bracket is provided with a moving channel that allows the telescopic mechanism to move. The top frame plates on both sides of the moving channel are provided with moving guide holes. The top plate of the telescopic mechanism or the fixed end of the first telescopic drive component is provided with a first threaded rod. The first threaded rod passes through the moving guide hole and is locked by a first nut.

4. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The inner wall and / or outer wall of the annular substrate are connected to a positioning member that locks into the annular positioning groove. The inner wall and / or outer wall of the annular substrate are provided with openings that communicate with the annular positioning groove. The upper end of the annular saw blade extends into the annular positioning groove and is locked by the positioning member. The saw teeth at the lower edge of the annular saw blade extend out of the annular positioning groove.

5. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The upper end face of the pressure block is provided with a plug plate, which is interlocked with the annular groove.

6. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The movable end of the third telescopic drive component is provided with a U-shaped clamp plate, and a bolt is connected to the U-shaped clamp plate and inserted into the inner cavity of the U-shaped clamp plate. The end of the sawtooth strip extends into the U-shaped clamp plate corresponding to its position, and the bolt is locked and abuts against the sawtooth strip.

7. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The limiting plates on the two sides opposite to the ceramic fiber module are positioned correspondingly; between the two corresponding limiting plates, at least the upper middle part of one limiting plate is a cavity structure, and a ranging sensor is embedded in the cavity of the limiting plate. The height of the ranging sensor is higher than the height of the ceramic fiber module, the laser emitting end of the ranging sensor is flush with the end face of the limiting plate facing the ceramic fiber module, and the terminal of the ranging sensor is connected to the serial port display board.

8. The sample preparation equipment for testing the thermal conductivity of ceramic fiber modules according to claim 1, characterized in that, The base is equipped with a rotation limiter. When the frame rotates to the position of the flat plate, which corresponds to the position of the middle of the ceramic fiber module, it stops moving due to the restriction of the rotation limiter. The sleeve of the height measuring device is equipped with the scale of a vernier caliper.

Images