A detachable pressurizing device for preparing calcium silicate board in a laboratory

Abstract

The utility model provides a kind of detachable pressurizing device for preparing calcium silicate board in laboratory, comprising: pressure-bearing table, pressure-bearing plate, four surrounding pressure pieces and force bolt;Screw hole is opened on the end face of surrounding pressure piece, recess is opened on the side face, and the recess bottom surface is opened with the through hole corresponding with screw hole;The surrounding pressure piece is enclosed to form rectangular frame setting on pressure-bearing table, and locking is fixed by the lateral pre-tightening force that surrounding pressure piece is applied to by screwing force bolt;The plane size of pressure-bearing plate is consistent with the size of inner cavity enclosed by rectangular frame, and the position corresponding four surrounding pressure pieces on its upper surface is respectively horizontally fixed with connecting plate for installing micrometer, and the connecting plate is used to install micrometer detection plate blank during pressing forming process flatness.The utility model is through the adaptive structure of detachable surrounding pressure piece and pressure-bearing table, accurate gap control and adjustment design, solve the problem that laboratory calcium silicate board is difficult to press form, operation is complicated and precision is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of calcium silicate board preparation, and in particular to a detachable pressurizing device for preparing calcium silicate boards in the laboratory. Background Technology

[0002] Calcium silicate board, as a novel green, low-energy, and high-strength wall material, is mainly produced on a large scale in industrial production through sheet forming and slurry casting methods. However, to improve its performance, research is needed in the laboratory on its mix design and raw material optimization, which requires the preparation of smaller boards.

[0003] Existing laboratories lack the necessary molds to mold calcium silicate boards to meet requirements under pressure. Existing molding methods cannot provide sufficient pressure, affecting the strength development process of the calcium silicate boards and resulting in low-strength specimens that fail to accurately reflect the rationality of the mix design. Furthermore, existing laboratory molds are primarily used for molding cubic specimens, whose dimensions do not meet the testing requirements for calcium silicate boards. They also lack suitable conditions for use with presses for pressure molding, and there are no pressure plates compatible with existing steel molds. Additionally, the flatness of the calcium carbonate boards cannot be accurately measured during laboratory pressurization. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a detachable pressurizing device for preparing calcium silicate boards in the laboratory. Through the adaptable structure of the detachable pressure plate and the pressure platform, and the precise gap control and adjustment design, it solves the problems of difficult pressure molding of calcium silicate boards in the laboratory, cumbersome operation and insufficient precision, and can efficiently prepare specimens that meet the strength and testing requirements.

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

[0006] A detachable pressurizing device for preparing calcium silicate boards in the laboratory is provided, comprising: a pressure platform, a pressure plate, four confining pressure plates, and a clamping bolt; each confining pressure plate has a screw hole on its end face and a groove on its side face that matches the size of the end face, and a through hole corresponding to the screw hole on the bottom surface of the groove; the four confining pressure plates are connected to the screw holes of adjacent confining pressure plates through the through holes of the clamping bolt, forming a rectangular frame set on the pressure platform, and the frame is locked and fixed by applying a lateral preload to the confining pressure plates by tightening the clamping bolt; the planar dimensions of the pressure plate are consistent with the inner cavity dimensions enclosed by the rectangular frame, its lower surface is used to contact the calcium silicate board slurry and transmit pressure, and its upper surface is horizontally fixed with connecting plates for mounting dial indicators at the positions of the four confining pressure plates, the connecting plates being used to mount dial indicators to detect the flatness of the board blank during the pressurization and forming process.

[0007] Preferably, it also includes an adjusting shim, the planar dimensions of which are consistent with the end face dimensions of the surrounding pressure plate, and a positioning hole is provided on it corresponding to the screw hole. The adjusting shim is sandwiched between the end face of the adjacent surrounding pressure plate and the bottom surface of the groove. Adjusting shims of different thicknesses are selected to adjust the enclosure size of the rectangular frame, and the thickness of the adjusting shim is not greater than the depth of the groove.

[0008] Preferably, the screw hole is opened on one end face of the retaining plate, and the groove is opened on the side surface of the other end of the retaining plate. The ends of the four retaining plates are sequentially fitted into the grooves of the adjacent retaining plates to form a rectangular frame. The retaining plates are tightly fitted and fixed by applying a preload force through the through hole and screw hole by the force-reinforcing bolt.

[0009] Preferably, the retaining plate includes two transverse retaining plates and two longitudinal retaining plates. The transverse retaining plates have screw holes at both ends, and the longitudinal retaining plates have symmetrical grooves on their side surfaces. The size of the grooves is the same as the size of the end faces of the transverse retaining plates. The two ends of the transverse retaining plates are respectively fitted into the grooves of the longitudinal retaining plates. The plates are threadedly connected to the screw holes of the transverse retaining plates by a through hole penetrating the bottom surface of the groove with a tension bolt, forming a rectangular frame and being locked and fixed by the tension bolt.

[0010] Preferably, the connecting plate is a steel plate welded and fixed to the pressure plate, and its height is not less than the height of the surrounding pressure plate. The connecting plate is provided with threaded holes for fixing a dial indicator, and the axis of the threaded holes is perpendicular to the surface of the pressure plate.

[0011] Preferably, the groove depth of the retaining plate is 1 / 3 to 1 / 2 of the thickness of the retaining plate; the diameter of the force-applying bolt is 6-8 mm, and one end of the bolt is provided with an internal hexagonal groove; the inner diameter of the through hole is 0.1-0.2 mm larger than the outer diameter of the force-applying bolt.

[0012] Preferably, the confining pressure plate is detachably mounted on the pressure-bearing platform through the cooperation of tension bolts, screw holes, grooves, and through holes.

[0013] Preferably, the pressure plate includes an integrally formed base plate and a boss. The boss protrudes from the upper surface of the base plate, and the surrounding pressure plate is disposed on the base plate around the boss, with its inner side tightly fitting the outer side of the boss, and the gap between the pressure plate and the surrounding pressure plate is 0.1mm.

[0014] Preferably, the height difference between the upper end face of the retaining plate and the upper surface of the boss is not less than 25mm, and the space formed by the height difference is used to accommodate the calcium silicate board slurry and can meet the space requirements for loading and vibration operation.

[0015] Preferably, the height of the boss is 5-10mm, and the edge of the base plate extends beyond the outer wall of the boss by no less than 15mm.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a detachable pressure device for preparing calcium silicate boards in the laboratory. Four confining pressure plates, secured by bolts and grooves, form a lockable rectangular frame. Combined with an integrally formed base plate and boss structure on the pressure platform, this design ensures the stability of the confining pressure plates during installation. The detachable design, with no bolt connection between the pressure plates and the pressure platform, allows for rapid demolding after pressure molding, facilitating room-temperature curing of the slab. Furthermore, the pressure platform can be quickly reassembled for the next set of specimens, significantly improving experimental efficiency. The groove depth design of the confining pressure plates and the dimensional fit of the bolts ensure the tightness of the frame connection and structural integrity. The strength is sufficient to withstand high pressure (30MPa-40MPa), meeting the strength requirements of calcium silicate boards. The 0.1mm gap between the pressure plate and the surrounding pressure sheet, along with the threaded hole design of the connecting plate, prevents edge warping during pressure application and allows for real-time monitoring of the board flatness via a dial indicator, ensuring molding accuracy. The adjustable shims can accommodate the processing errors of the surrounding pressure sheet, flexibly adjusting the frame enclosure dimensions. The design of the boss height and the extra width of the bottom plate further ensures sufficient space for loading and vibration, as well as uniform stress distribution, effectively avoiding problems such as board corner chipping and delamination, filling the equipment gap in laboratory preparation of small-sized calcium silicate boards. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a detachable pressurizing device for preparing calcium silicate boards in the laboratory according to Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the pressure-bearing platform structure in Embodiment 1 of this utility model.

[0020] Figure 3 This is a schematic diagram of the longitudinal shroud structure of Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of the transverse shroud structure of Embodiment 1 of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present invention in the state without a pressure plate.

[0023] Figure 6 This is a partial exploded view of Embodiment 2 of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the compression sheet in Embodiment 2 of this utility model.

[0025] In the diagram: 1. Pressure plate; 11. Base plate; 12. Boss; 2. Pressure plate; 3. Enclosing plate; 31. Transverse enclosing plate; 32. Longitudinal enclosing plate; 4. Reinforcing bolt; 5. Screw hole; 6. Through hole; 7. Groove; 8. Connecting plate; 81. Threaded hole; 9. Adjusting shim; 91. Positioning hole.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figure 1 As shown, a detachable pressurizing device for preparing calcium silicate boards in the laboratory includes: a pressure platform 1, a pressure plate 2, four confining pressure plates 3, and a tensioning bolt 4; the confining pressure plates 3 have screw holes 5 on their end faces and grooves 7 on their sides that are adapted to the size of the end faces, and through holes 6 corresponding to the screw holes 5 are formed on the bottom surface of the grooves 7; the four confining pressure plates 3 are connected to the screw holes 5 of adjacent confining pressure plates 3 by the tensioning bolts 4 passing through the through holes 6, forming a rectangular frame set on the pressure platform 1, and the frame is locked and fixed by applying a lateral preload to the confining pressure plates 3 by tightening the tensioning bolts 4; the planar dimensions of the pressure plate 2 are consistent with the inner cavity dimensions enclosed by the rectangular frame, its lower surface is used to contact the calcium silicate board slurry and transmit pressure, and its upper surface is horizontally fixed with connecting plates 8 for mounting dial indicators at the positions of the four confining pressure plates 3, the connecting plates 8 being used to mount dial indicators to detect the flatness of the board blank during the pressurization and forming process.

[0030] It should be noted that the confining pressure plate 3, as a key component in forming the molding space, has a screw hole 5 on its end face and a groove 7 on its side that matches the size of the end face of the adjacent confining pressure plate 3. The bottom surface of the groove 7 also has a through hole 6 coaxially corresponding to the screw hole 5. This combination structure of "screw hole 5 + groove 7 + through hole 6" provides the basis for the tight connection and detachability of the confining pressure plate 3. The four confining pressure plates 3 are connected to the screw holes 5 of the adjacent confining pressure plates 3 by tightening bolts 4 passing through the through holes 6, forming a rectangular frame which is then placed on the pressure platform 1. Tightening the tightening bolts 4 applies a lateral preload to the confining pressure plates 3, locking the frame in place and ensuring a tight enclosure. The airtight design prevents leakage of calcium silicate board slurry, and the detachable design solves the problem of cumbersome demolding in traditional one-piece molding molds. It can withstand a pressure of 30MPa-40MPa, meeting the strength formation requirements of calcium silicate board. The planar dimensions of the pressure plate 2 are consistent with the inner cavity dimensions enclosed by the rectangular frame. Its lower surface directly contacts the calcium silicate board slurry and transmits pressure, ensuring uniform pressure. The upper surface is horizontally fixed with connecting plates 8 corresponding to the positions of the surrounding pressure plates 3. The connecting plates 8 can be equipped with dial indicators to detect the flatness of the board blank in real time during the pressure forming process, filling the gap of existing laboratory molds that cannot accurately monitor the flatness of the board blank, and effectively ensuring the forming accuracy.

[0031] like Figure 3 and Figure 4 As shown, the retaining plate 3 includes two transverse retaining plates 31 and two longitudinal retaining plates 32. The two ends of the transverse retaining plates 31 are provided with screw holes 5. The side surfaces of the longitudinal retaining plates 32 are symmetrically provided with grooves 7, and the size of the grooves 7 is the same as the end face size of the transverse retaining plates 31. The two ends of the transverse retaining plates 31 are respectively fitted into the grooves 7 of the longitudinal retaining plates 32. The retaining plates 31 are threadedly connected to the screw holes 5 of the transverse retaining plates 31 by a through hole 6 through the bottom surface of the groove 7 by a tension bolt 4, forming a rectangular frame and being locked and fixed by the tension bolt 4.

[0032] It should be noted that dividing the retaining plate 3 into a transverse retaining plate 31 and a longitudinal retaining plate 32 is a further optimization of the frame assembly structure: the screw holes 5 at both ends of the transverse retaining plate 31 correspond precisely to the grooves 7 on the sides of the longitudinal retaining plate 32. The fit between the groove 7 and the end face of the transverse retaining plate 31 ensures the tightness and perpendicularity of the two when they are fitted together, fundamentally guaranteeing the geometric accuracy of the rectangular frame formed by the enclosure, avoiding deviations in the slab forming size due to frame skewing, and greatly simplifying the assembly process: simply insert the two ends of the transverse retaining plate 31 into the grooves 7 of the longitudinal retaining plate 32 to quickly complete the initial positioning, and then lock it in place by connecting the through hole 6 and the screw hole 5 with the tightening bolt 4. No complicated calibration steps are required, making it especially suitable for small-batch, multi-set operations in the laboratory. At the same time, this structure makes the frame size adjustment more flexible. By changing the transverse or longitudinal retaining plates 32 of different lengths, it can adapt to the forming needs of various specifications of calcium silicate boards, breaking through the limitations of the fixed size of traditional integrated molds.

[0033] like Figure 1 As shown, the connecting plate 8 is a steel plate welded and fixed to the pressure plate 2, and its height is not less than the height of the pressure plate 3. The connecting plate 8 is provided with a threaded hole 81 for fixing a dial indicator, and the axis of the threaded hole 81 is perpendicular to the surface of the pressure plate 2.

[0034] It should be noted that the connecting plate 8 is fixed to the pressure plate 2 by welding, which ensures that there is no relative displacement between the two during the pressurization process, and avoids affecting the monitoring accuracy of the dial indicator due to loose connection; the axis of the threaded hole 81 on the connecting plate 8 is perpendicular to the surface of the pressure plate 2, so that the probe of the dial indicator can act perpendicularly on the upper surface of the slab, eliminating the reading error caused by the measurement angle deviation and ensuring the authenticity of the flatness data.

[0035] The depth of the groove 7 of the retaining pressure plate 3 is 1 / 3 of the thickness of the retaining pressure plate 3.

[0036] It should be noted that the 1 / 3 depth ensures sufficient engagement length between the ends of adjacent retaining plates 3 and grooves 7, allowing the transverse retaining plates 31 and longitudinal retaining plates 32 to form a stable interlocking structure under the preload of bolts, thus preventing the frame from loosening or deforming due to shallow engagement during pressurization. At the same time, it also prevents the grooves 7 from being too deep, which weakens the structural strength of the retaining plates 3 themselves, ensuring that the retaining plates 3 are not prone to bending or breaking when subjected to lateral pressure of 30MPa-40MPa, thus balancing connection reliability and overall deformation resistance.

[0037] The diameter of the tensioning bolt 4 is 6mm, and one end of it is provided with an internal hexagonal groove. The inner diameter of the through hole 6 is 0.1mm larger than the outer diameter of the tensioning bolt 4.

[0038] It should be noted that the diameter of the tensioning bolt 4 is set at 6mm, which is an optimized choice based on the laboratory pressure strength (30MPa-40MPa) requirement: the bolt of this diameter can provide sufficient tensile strength and preload to ensure that it will not break due to excessive force during tightening, while avoiding the increased processing difficulty or material waste caused by excessive diameter of the screw hole 5 of the pressure plate 3, thus balancing structural strength and processing feasibility.

[0039] The confining pressure plate 3 is detachably mounted on the pressure plate 1 through the cooperation of the tensioning bolt 4, screw hole 5, groove 7, and through hole 6.

[0040] It should be noted that the "stressing bolt 4 + screw hole 5 + groove 7 + through hole 6" mating structure is the core of the detachable connection of the confining pressure plate 3: the stressing bolt 4 passes through the through hole 6 on the bottom surface of the groove 7 and is threaded into the screw hole 5 of the adjacent confining pressure plate 3. When tightened, the confining pressure plate 3 is tightly fitted by the lateral preload to form a stable frame, ensuring that it can withstand the pressure intensity under the positioning of the pressure platform 1 (especially the outside of the boss 12); and after loosening the bolt, the confining pressure plate 3 can be quickly removed from the pressure platform 1, which not only avoids the demolding difficulties caused by the fixed connection between the traditional integrated mold and the pressure platform 1, but also makes it easy to replace the confining pressure plate 3 of different specifications or adjust the frame size according to the experimental requirements.

[0041] like Figure 2 As shown, the pressure plate 1 includes an integrally formed base plate 11 and a boss 12. The boss 12 protrudes from the upper surface of the base plate 11. The surrounding pressure plate 3 is arranged around the boss 12 on the base plate 11, and its inner side is tightly fitted with the outer side of the boss 12. The gap between the pressure plate 2 and the surrounding pressure plate 3 is 0.1mm.

[0042] It should be noted that the boss 12 provides precise lateral positioning for the retaining plate 3: the tight fit between the inner side of the retaining plate 3 and the outer side of the boss 12 can strictly limit the enclosure size of the rectangular frame, avoiding dimensional deviations in the blank forming caused by frame offset during assembly. This is especially suitable for the high precision requirements of laboratories for small-sized calcium silicate board specimens.

[0043] The height difference between the upper end face of the pressure plate 3 and the upper surface of the boss 12 is not less than 25mm. The space formed by the height difference is used to accommodate the calcium silicate board slurry and can meet the space requirements for loading and vibration operation.

[0044] It should be noted that the height difference of no less than 25mm between the upper end face of the compression plate 3 and the upper surface of the boss 12 is a key design for the loading and vibration requirements in the laboratory calcium silicate board preparation process: the space formed by this height difference can accommodate a sufficient amount of calcium silicate board slurry, ensuring that the thickness of the board blank after molding meets the experimental test requirements; at the same time, the ample space provides convenience for the loading operation, avoids the slurry overflowing the frame, and also provides sufficient range for the insertion and operation of the vibration tool, making it easy to remove air bubbles in the slurry, ensuring that the slurry is filled densely, especially the corners, which can be fully filled, effectively reducing defects such as holes, delamination or corner chipping in the board blank after molding.

[0045] The height of the boss 12 is 8mm, and the edge of the base plate 11 extends beyond the outer wall of the boss 12 by a width of not less than 15mm.

[0046] It should be noted that when the surrounding pressure plate 3 is placed around the boss 12, the extra width of the base plate 11 can stably support the surrounding pressure plate 3, avoiding the surrounding pressure plate 3 from tilting or the frame from shifting due to insufficient support during the pressurization process, thus enhancing the overall structural stability of the device. At the same time, the extra 15mm width provides sufficient space for the assembly and disassembly of the surrounding pressure plate 3, making it easy for experimental personnel to quickly adjust the frame position, improving the convenience of operation, and adapting to the needs of small-batch, multi-set preparation in the laboratory.

[0047] The working principle and usage method of a detachable pressurizing device for preparing calcium silicate boards in the laboratory according to this embodiment:

[0048] This embodiment provides a detachable pressurizing device for preparing calcium silicate boards in the laboratory. Four confining pressure plates 3 are initially positioned by having the ends of the transverse confining plates 31 engaged in the grooves 7 of the longitudinal confining plates 32. A tensioning bolt 4, penetrating the through-hole 6 of the groove 7 and engaging with the screw hole 5 of the transverse confining plate 31, applies a lateral preload to tightly lock the enclosed rectangular frame. This ensures the sealing of the molding space to prevent slurry leakage and can withstand a pressure of 30MPa-40MPa. The frame surrounds the boss 12 of the pressure platform 1, and the outer surface of the boss 12... The pressure plate 2 fits tightly against the inner side of the pressure plate 3 to achieve precise lateral positioning and prevent frame displacement. Because the plane size of the pressure plate 2 is consistent with the inner cavity of the frame, it can evenly transmit the pressure of the press to the slurry. The 0.1mm gap between the pressure plate 2 and the pressure plate 3 ensures smooth movement during pressurization and reduces slurry leakage. At the same time, the connecting plate 8 on the pressure plate 2 is equipped with a dial indicator to monitor the flatness of the board in real time during the pressurization process. Through the synergistic effect of "sealing and locking - precise positioning - uniform pressure transmission - real-time monitoring", the laboratory's requirements for the strength and precision of calcium silicate board preparation are met.

[0049] In use, firstly, insert the two ends of the two transverse retaining plates 31 into the grooves 7 of the two longitudinal retaining plates 32, and connect them with the through holes 6 and screw holes 5 using the tension bolts 4 to assemble a rectangular frame; place the frame around the boss 12 of the bearing platform 1 on the base plate 11, ensuring that the inner side of the retaining plate 3 fits against the outer side of the boss 12, and tighten the tension bolts 4; then, pour calcium silicate board slurry into the space formed by the frame and the boss 12 (height difference not less than 25mm), and use a vibrator to vibrate it until it is dense; place the bearing plate 2 into the frame, so that the lower surface contacts the slurry, and install a dial indicator on the upper surface connecting plate 8; move the device to the press, apply a pressure of 30MPa-40MPa through the bearing plate 2 for pressing, and monitor the flatness of the slab with the dial indicator at the same time; after the pressurization is completed, loosen the tension bolts 4 to remove the retaining plate 3, take out the formed slab for curing, and the bearing platform 1 can be reused for the frame assembly of the next set of test pieces.

[0050] Example 2

[0051] like Figure 5 As shown, this embodiment of a detachable pressurizing device for preparing calcium silicate boards in the laboratory is based on Embodiment 1, with the following adjustments:

[0052] like Figure 6 As shown, it also includes an adjusting shim 9. The planar dimensions of the adjusting shim 9 are consistent with the end face dimensions of the surrounding pressure plate 3, and a positioning hole 91 is provided on it corresponding to the screw hole 5. The adjusting shim 9 is sandwiched between the end face of the adjacent surrounding pressure plate 3 and the bottom surface of the groove 7. The enclosure dimensions of the rectangular frame can be adjusted by selecting adjusting shims 9 of different thicknesses, and the thickness of the adjusting shim 9 is not greater than the depth of the groove 7.

[0053] It should be noted that the calcium silicate boards prepared in the laboratory often need to be adapted to different sizes and specifications. However, slight dimensional errors are inevitable during the processing of the surrounding pressure plate 3. The adjusting shim 9, by being "clamped between the end face of the adjacent surrounding pressure plate 3 and the bottom surface of the groove 7", can not only use shims of different thicknesses (the thickness does not exceed the depth of the groove 7 to avoid affecting the fitting stability of the surrounding pressure plate 3) to compensate for the error and accurately adjust the enclosure size of the rectangular frame, but also enable the same set of surrounding pressure plates 3 to adapt to the forming requirements of various specifications of slabs, greatly improving the reusability of the device.

[0054] like Figure 7 As shown, the screw hole 5 is opened on one end face of the confining pressure plate 3, and the groove 7 is correspondingly opened on the side surface of the other end of the confining pressure plate 3. The ends of the four confining pressure plates 3 are sequentially fitted into the grooves 7 of the adjacent confining pressure plates 3 to form a rectangular frame. The preload is applied by the through hole 6 of the tension bolt 4 to cooperate with the screw hole 5, so that the confining pressure plates 3 are tightly fitted and fixed together.

[0055] It should be noted that the single structure of the confining pressure plate 3, which has a screw hole 5 at one end and a groove 7 on the side surface of the other end, allows the four confining pressure plates 3 to form a closed-loop assembly mode with the ends connected. Compared with the division of labor between the transverse and longitudinal confining plates 32 in Example 1, this further simplifies the types of parts. Individual confining pressure plates 3 are interchangeable, reducing the management cost and processing complexity of laboratory spare parts. At the same time, this closed-loop structure allows each confining pressure plate 3 to serve as both a "fitted end" providing screw hole 5 connection and a "fitted end" receiving adjacent confining pressure plates 3 through groove 7, enhancing the overall integrity and deformation resistance of the frame. During the pressurization process, it can more stably cooperate with the adjusting shim 9 to achieve dimensional compensation, further adapting to the high-precision preparation requirements of the laboratory for multi-specification calcium silicate board specimens.

[0056] Compared with Example 1:

[0057] This embodiment provides a detachable pressurizing device for preparing calcium silicate boards in the laboratory. By adding an adjusting shim 9, the device can accurately compensate for the processing error of the surrounding pressure plate 3 using shims of different thicknesses and flexibly adjust the enclosing size of the frame. This allows the same set of surrounding pressure plates 3 to be adapted to various specifications of board blanks, greatly improving the reusability of the device. At the same time, the surrounding pressure plate 3 adopts a universal single-unit structure with a screw hole 5 at one end and a groove 7 at the other end, forming a closed-loop assembly mode that connects end to end. This simplifies the types of parts, reduces the laboratory's spare parts management and processing costs, and the closed-loop structure enhances the overall integrity and deformation resistance of the frame. It can more stably cooperate with the adjusting shim 9 to achieve size compensation, further meeting the laboratory's high-precision preparation needs for calcium silicate board specimens of various specifications.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is used only to illustrate the technical solution of this utility model, and is not intended to limit the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the protection scope of this utility model.

[0059] In the description of this utility model, it should be understood that the terms "upper", "lower", "upper end", "lower end", "upper surface", "lower surface", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 utility model.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A removable pressurization device for the laboratory preparation of calcium silicate boards, characterized in that: include: The pressure platform (1), pressure plate (2), four confining plates (3), and reinforcing bolts (4) are provided. Each confining plate (3) has a screw hole (5) on its end face and a groove (7) on its side face that matches the size of the end face. The bottom surface of the groove (7) has a through hole (6) corresponding to the screw hole (5). The four confining plates (3) are connected to the screw holes (5) of adjacent confining plates (3) by the reinforcing bolts (4) passing through the through holes (6), forming a rectangular frame set on the pressure platform. On the pressure table (1), the frame is locked and fixed by applying lateral preload to the surrounding pressure plate (3) by tightening the tightening bolt (4); the plane size of the bearing plate (2) is consistent with the inner cavity size enclosed by the rectangular frame, its lower surface is used to contact the calcium silicate board slurry and transmit pressure, and the upper surface is horizontally fixed with connecting plates (8) for installing dial indicators at the positions of the surrounding pressure plates (3) on all four sides. The connecting plates (8) are used to install dial indicators to detect the flatness of the slab during the pressure forming process.

2. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: It also includes an adjusting shim (9), the planar dimensions of which are consistent with the end face dimensions of the surrounding pressure plate (3), and a positioning hole (91) is provided on it corresponding to the screw hole (5). The adjusting shim (9) is sandwiched between the end face of the adjacent surrounding pressure plate (3) and the bottom surface of the groove (7). By selecting adjusting shims (9) of different thicknesses, the enclosure size of the rectangular frame can be adjusted, and the thickness of the adjusting shim (9) is not greater than the depth of the groove (7).

3. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The screw hole (5) is opened on one end face of the confining pressure plate (3), and the groove (7) is opened on the side surface of the other end of the confining pressure plate (3). The ends of the four confining pressure plates (3) are sequentially fitted into the grooves (7) of the adjacent confining pressure plates (3) to form a rectangular frame. The preload is applied by the through hole (6) of the tension bolt (4) to make the confining pressure plates (3) fit tightly together and be fixed.

4. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The retaining plate (3) includes two transverse retaining plates (31) and two longitudinal retaining plates (32). The transverse retaining plates (31) have screw holes (5) at both ends. The longitudinal retaining plates (32) have symmetrical grooves (7) on their side surfaces. The size of the grooves (7) is the same as the size of the end face of the transverse retaining plates (31). The two ends of the transverse retaining plates (31) are respectively fitted into the grooves (7) of the longitudinal retaining plates (32). The retaining plates (31) are threadedly connected to the screw holes (5) of the transverse retaining plates (31) by a through hole (6) through the bottom surface of the groove (7) by a tension bolt (4). The retaining plates are enclosed to form a rectangular frame and locked and fixed by the tension bolt (4).

5. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The connecting plate (8) is a steel plate welded and fixed on the pressure plate (2). Its height is not lower than the height of the pressure plate (3). The connecting plate (8) is provided with a threaded hole (81) for fixing a dial indicator. The axis of the threaded hole (81) is perpendicular to the surface of the pressure plate (2).

6. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The groove (7) of the pressure plate (3) has a depth of 1 / 3 to 1 / 2 of the thickness of the pressure plate (3); the diameter of the force-applying bolt (4) is 6-8 mm, and one end of the bolt is provided with an internal hexagonal groove; the inner diameter of the through hole (6) is 0.1-0.2 mm larger than the outer diameter of the force-applying bolt (4).

7. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The confining pressure plate (3) is detachably mounted on the pressure plate (1) by means of the engagement of the tension bolt (4), screw hole (5), groove (7), and through hole (6).

8. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 1, characterized in that: The pressure plate (1) includes an integrally formed base plate (11) and a boss (12). The boss (12) protrudes from the upper surface of the base plate (11). The surrounding pressure plate (3) surrounds the boss (12) and is disposed on the base plate (11). Its inner side is in close contact with the outer side of the boss (12). The gap between the pressure plate (2) and the surrounding pressure plate (3) is 0.1 mm.

9. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 8, characterized in that: The height difference between the upper end face of the pressure plate (3) and the upper surface of the boss (12) is not less than 25mm. The space formed by the height difference is used to accommodate the calcium silicate board slurry and can meet the space requirements for loading and vibration operation.

10. The detachable pressurizing device for preparing calcium silicate boards in the laboratory as described in claim 8, characterized in that: The height of the boss (12) is 5-10mm, and the edge of the base plate (11) extends beyond the outer wall of the boss (12) by no less than 15mm.

Images