CN114441335B - Method and device for measuring flexural strength of calcined gypsum - Google Patents
Method and device for measuring flexural strength of calcined gypsum Download PDFInfo
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- CN114441335B CN114441335B CN202210010347.9A CN202210010347A CN114441335B CN 114441335 B CN114441335 B CN 114441335B CN 202210010347 A CN202210010347 A CN 202210010347A CN 114441335 B CN114441335 B CN 114441335B
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 106
- 239000010440 gypsum Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 55
- 239000007924 injection Substances 0.000 claims description 55
- 238000003825 pressing Methods 0.000 claims description 54
- 239000002002 slurry Substances 0.000 claims description 46
- 238000002360 preparation method Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000000429 assembly Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 3
- 239000011507 gypsum plaster Substances 0.000 claims description 3
- 230000002742 anti-folding effect Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims 2
- 230000008595 infiltration Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 15
- 239000011505 plaster Substances 0.000 description 10
- 239000012466 permeate Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 238000000748 compression moulding Methods 0.000 description 4
- 230000002968 anti-fracture Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method and a device for measuring flexural strength of calcined gypsum, which comprises the steps of S100, manufacturing a gypsum board die, simultaneously coating demolding oil in the gypsum board die, adjusting the supporting distance of a universal testing machine to 220mm, S200, pouring water according to the standard consistency with water, weighing 1000g of gypsum powder, pouring the gypsum powder into water, and immediately stirring.
Description
Technical Field
The invention relates to the technical field of gypsum board detection, in particular to a method and a device for measuring flexural strength of calcined gypsum.
Background
The gypsum board is one kind of material with building gypsum as main material. The building material has the advantages of light weight, high strength, thin thickness, convenient processing and good performances of sound insulation, heat insulation, fire resistance and the like, and is widely used for inner partition walls, wall cladding boards, ceilings, sound absorbing boards, ground base plates, various decorative boards and the like of various buildings such as houses, office buildings, shops, hotels, industrial workshops and the like.
The method is characterized in that the strength of the plaster board is measured in the production process to ensure the production quality of the plaster board, a certain size of the plaster board test board is prepared in a mould by referring to a detection method of the cement strength in the cement industry, and the test board is subjected to flexural strength detection by a flexural tester, but when the flexural performance of the plaster board is detected by the method, the flexural tester is influenced by the self performance of the plaster board, and the flexural tester is influenced by the operation of a tester and the precision of equipment, so that the measurement structure deviation of the plaster board is larger, and the reference is lower, so that the method and the device for measuring the flexural strength of the plaster board are required to be designed.
Disclosure of Invention
The invention aims to provide a method and a device for measuring the flexural strength of calcined gypsum, which solve the problem that the deviation of a measuring result is large due to the influence of a measuring instrument, the operation of a measuring person and the performance of the gypsum board during the measurement of the existing calcined gypsum board.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a method for measuring flexural strength of calcined gypsum comprises the steps of,
S100, manufacturing a gypsum board mould, wherein the length, the width and the height of the gypsum board mould are respectively 260mm, 40mm and 40mm, simultaneously coating demoulding oil in the gypsum board mould, and adjusting the supporting distance of a universal testing machine to 220mm;
S200, pouring water into a stirrer according to the water consumption of standard consistencies, weighing 1000g of gypsum powder, pouring the gypsum powder into the water for 5 seconds, immediately stirring, pouring the gypsum powder into a gypsum board die after 50 seconds of stirring, compacting under the condition of controlling the volume and pressing, lifting the gypsum board die for 1cm, and then falling and repeating for three times;
And S300, taking out the formed test blocks in the gypsum board mould, placing the test blocks on a universal testing machine with the side faces upwards for carrying out an anti-fracture test, recording readings after the three test blocks are broken, and taking an average value to be accurate to 1N.
In a preferred embodiment of the present invention, in the step S200, the condition of controlling the amount of pressing is specifically to control the internal volume of the gypsum board mold to be a constant value and press the gypsum slurry into the gypsum board mold successively until the filling is completed.
In order to solve the technical problems, the invention further provides the following technical scheme:
the measuring device for the method for measuring the flexural strength of the plaster comprises a sample preparation table and a bottom die arranged on the sample preparation table, wherein a die clamping mechanism connected with the sample preparation table is arranged on the bottom die, and the die clamping mechanism is used for quantitatively compacting the plaster slurry injected into the bottom die;
the mold closing mechanism comprises a connecting bracket penetrating through the bottom mold and connected with the sample preparation table and a plurality of lifting assemblies arranged on the connecting bracket, wherein a quantitative mold closing plate is arranged at the end parts of the lifting assemblies, and a top pressing mold plate for pressing gypsum slurry in the bottom mold is arranged at the bottom of the quantitative mold closing plate.
As a preferable mode of the invention, the connecting bracket comprises a plurality of struts penetrating through the bottom die and arranged on the sample preparation table and distributed along a horizontal straight line direction, positioning components for fixing the bottom die to the sample preparation table are jointly arranged on the struts, a plurality of notch grooves for the struts to pass through are arranged on one side of the bottom die, and a plurality of lifting components are respectively arranged on the corresponding struts.
As a preferable scheme of the invention, the positioning assembly comprises a plurality of strip-shaped connecting plates which are arranged on the support columns along the horizontal direction, a plurality of fixing bolts which penetrate through the bottom die and are in threaded connection with the sample preparation table are arranged on the strip-shaped connecting plates along the vertical direction, and a pressing plate propped against the top of the bottom die is arranged on each fixing bolt.
As a preferable scheme of the invention, the top pressing template comprises a plurality of connecting columns which are perpendicular to the surface of the quantitative template and are arranged on one side of the quantitative template, a top pressing connecting plate parallel to a horizontal plane is arranged on the connecting columns, a telescopic component is arranged at the bottom of the top pressing connecting plate, a pressing template for pressing gypsum slurry is arranged at the end part of the telescopic component, an injection port for passing the gypsum slurry is arranged on the pressing template, and a through groove for passing the telescopic component and the injection port is arranged on the quantitative template.
As a preferred embodiment of the present invention, the injection port includes an injection hole provided in the platen and an injection pipe provided in the closing plate and communicating with the injection hole, and an injection funnel for injecting gypsum slurry is connected to the injection pipe.
As a preferable scheme of the invention, an auxiliary connecting plate is arranged on the inner wall of the injection funnel along the horizontal direction, an adjusting screw is arranged on the auxiliary connecting plate along the vertical direction, an extension sleeve is sleeved on the adjusting screw in a threaded manner, the end part of the extension sleeve is connected with a sealing plate for sealing the outlet of the injection pipeline through a rotating assembly, a plurality of seepage channels for seeping out gypsum slurry are arranged on the sealing plate, and two ends of the seepage channels are positioned on two different diameters of the adjusting screw.
As a preferable scheme of the invention, the sealing plate comprises a connecting bottom plate connected with the end part of the extension sleeve through a rotating assembly and a contact plate fixedly connected with one side of the connecting bottom plate far away from the extension sleeve through a fastening bolt, two side walls contacted with the connecting bottom plate and the contact plate are jointly provided with a containing cavity, and the containing cavity is communicated with one side of a plurality of penetration channels.
As a preferable mode of the invention, a plurality of sliding columns are arranged on one side of the compression molding plate, which is close to the jacking connecting plate, and the sliding columns are symmetrically arranged on the central line of the compression molding plate along the horizontal direction and penetrate through the quantitative combination molding plate to the other side.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the universal testing machine is used for supporting the test board to carry out the anti-folding test, the adverse factor that the quick calcined gypsum cannot be tested in the initial setting time period is eliminated, the data is automatically measured and recorded through the universal testing machine, the influence of the manual operation test on the accuracy of the detection result is eliminated, the accuracy of the measurement result is improved, the space for filling gypsum slurry in the bottom die is controlled to be the same through the die clamping mechanism so as to control the thickness of the test board manufactured each time to be the same, the influence of the parameter change of the test board on the measurement result is avoided, and the accuracy of the measurement result is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
FIG. 1 is a flow chart of a method for measuring flexural strength of calcined gypsum according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a measuring apparatus for measuring flexural strength of calcined gypsum according to an embodiment of the present invention;
Fig. 3 is a schematic side view of an injection port according to an embodiment of the present invention.
Reference numerals in the drawings are respectively as follows:
1-a sample preparation table; 2-a bottom die; 3-a mold closing mechanism;
301-connecting a bracket; 302-a lifting assembly; 303-quantitatively assembling templates; 304-pressing the template; 305-a pillar; 306-a positioning assembly; 307-notch groove; 308-bar-shaped connecting plates; 309-fixing bolts; 310-pressing plate; 311-connecting columns; 312-pressing the connecting plate; 313-telescoping assembly; 314-pressing the template; 315-injection port; 316-through groove; 317-an injection hole; 318-injection tubing; 319-injection funnel; 320-auxiliary connection plates; 321-adjusting the screw; 322-an extension sleeve; 323-a rotating assembly; 324-closing plate; 325-permeate channel; 326-connecting the bottom plate; 327 contact plates; 328-accommodation chamber; 329-sliding column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
as shown in fig. 1, the present invention provides a method for measuring flexural strength of calcined gypsum, comprising the steps of,
S100, manufacturing a gypsum board mould, wherein the length, the width and the height of the gypsum board mould are respectively 260mm, 40mm and 40mm, simultaneously coating demoulding oil in the gypsum board mould, and adjusting the supporting distance of a universal testing machine to 220mm;
S200, pouring water into a stirrer according to the water consumption of standard consistencies, weighing 1000g of gypsum powder, pouring the gypsum powder into the water for 5 seconds, immediately stirring, pouring the gypsum powder into a gypsum board die after 50 seconds of stirring, compacting under the condition of controlling the volume and pressing, lifting the gypsum board die for 1cm, and then falling and repeating for three times;
And S300, taking out the formed test blocks in the gypsum board mould, placing the test blocks on a universal testing machine with the side faces upwards for carrying out an anti-fracture test, recording readings after the three test blocks are broken, and taking an average value to be accurate to 1N.
The test board is subjected to fracture resistance measurement by the universal testing machine, so that the influence of a manual operation test on a measurement result is avoided, the accuracy of the test result is improved, and the problem that the quick calcined gypsum cannot be tested due to short initial setting time is solved.
Secondly, the thickness of each time of preparation of the test board is the same through controlling the amount and the top pressure, so that the problem that the measurement result is influenced due to the difference of the thickness of the test board caused by the difference of the addition amount of the gypsum paddles is avoided, and the accuracy of the measurement result is further improved.
In the step S200, the condition of controlling the amount and pressing is specifically to control the internal volume of the gypsum board mold to be a fixed value and press the gypsum slurry into the gypsum board mold successively until the filling is completed.
The thickness of the prepared test board is the same by controlling the volume of the inner space of the gypsum board die to be a constant value, so that the influence of different thicknesses of the test board on the accuracy of a measurement result during multiple measurements is avoided.
Example 2:
As shown in fig. 2 and 3, the invention also provides a measuring device for a method for measuring the flexural strength of the plaster of paris, which comprises a sample preparation table 1 and a bottom die 2 arranged on the sample preparation table 1, wherein a die clamping mechanism 3 connected with the sample preparation table 1 is arranged on the bottom die 2, and the die clamping mechanism 3 is used for quantitatively compacting the plaster slurry injected into the bottom die 2;
the mold clamping mechanism 3 comprises a connecting bracket 301 penetrating through the bottom mold 2 and connected with the sample preparation table 1, and a plurality of lifting assemblies 302 arranged on the connecting bracket 301, wherein quantitative mold clamping plates 303 are arranged at the end parts of the lifting assemblies 302, and a top pressing mold plate 304 for pressing gypsum slurry in the bottom mold 1 is arranged at the bottom of the quantitative mold clamping plates 303.
When the invention is used, the bottom die 2 is fixed on the sample preparation table 1, and gypsum slurry obtained by mixing gypsum powder and water is injected after the die clamping mechanism 3 seals the bottom die 2.
When the mold clamping mechanism 3 is used, the lifting assembly 302 drives the quantitative mold clamping plate 303 and the top mold clamping plate 304 to move into the bottom mold 2, the maximum height of the top mold clamping plate 304 is controlled through the bottom of the quantitative mold clamping plate 303, so that the space in the bottom mold 2 is controlled, the thickness of each prepared test plate is identical through controlling the height consistency of the descending of the lifting assembly 302, the size parameters of different test plates are identical when the bending resistance of the test plate is measured for many times, the influence on the accuracy of the measurement result due to the size parameters of the test plate is avoided, and the accuracy of the measurement result of the test plate is improved.
In this example, gypsum slurry was injected into the bottom mold 2 by the mold clamping mechanism 3 to prepare a test board.
The connecting bracket 301 comprises a plurality of struts 305 penetrating through the bottom die 2 and arranged on the sample preparation table 1 and distributed along the horizontal linear direction, positioning components 306 for fixing the bottom die 2 to the sample preparation table 1 are jointly arranged on the struts 305, a plurality of notch grooves 307 for the struts 305 to pass through are arranged on one side of the bottom die 2, and a plurality of lifting components 302 are respectively arranged on the corresponding struts 305.
When the connecting bracket 301 is used, the support posts 305 are used for supporting the installation positioning assembly 306 and the lifting assembly 302, meanwhile, the support posts 305 which are arranged in a straight line are connected and matched with the corresponding notch grooves 307 to limit the specific position of the bottom die 2, the positioning assembly 306 is used for fixing the position of the bottom die 2, the position of the bottom die 2 corresponding to the position of the mold clamping mechanism 3 is ensured, and the position of the bottom die 2 is prevented from being deviated in the moving process of the lifting assembly 302.
The positioning assembly 306 comprises a strip-shaped connecting plate 308 arranged on a plurality of struts 305 along the horizontal direction, a plurality of fixing bolts 309 penetrating through the bottom die 2 and in threaded connection with the sample preparation table 1 are arranged on the strip-shaped connecting plate 308 along the vertical direction, and a pressing plate 310 propped against the top of the bottom die 1 is arranged on each fixing bolt 309.
When the positioning assembly 306 is used, the notch 307 on the bottom die 2 is inserted in alignment with the support 305, and a plurality of fixing bolts 309 penetrate through the bottom die 2 and are in threaded connection with the sample preparation table 1, so that the position of the bottom die 2 is fixed, the positions of the bottom die 2 and the clamping mechanism 3 are ensured to be corresponding, and the quantitative clamping template 303 and the top clamping template 304 can enter the bottom die 2 to prepare a test plate.
The fixing bolts 309 are rotated to enable the pressing plates 310 to abut against the surface of the bottom die 2, the bottom die 2 is pressed down by the pressing plates 310 to limit the turnover of the bottom die 2, so that the movement of the bottom die 2 along the horizontal direction and the vertical direction is limited, and the stability of the bottom die 2 in preparing the test board is ensured.
The top pressing template 304 comprises a plurality of connecting columns 311 which are perpendicular to the surface of the quantitative pressing template 303 and are arranged on one side of the quantitative pressing template 303, a top pressing connecting plate 312 parallel to a horizontal plane is arranged on the connecting columns 311, a telescopic assembly 313 is arranged at the bottom of the top pressing connecting plate 312, a pressing die plate 314 for pressing gypsum slurry is arranged at the end part of the telescopic assembly 313, an injection port 315 for passing the gypsum slurry is arranged on the pressing die plate 314, and a through groove 316 for passing the telescopic assembly 313 and the injection port 315 is arranged on the quantitative pressing template 303.
When the top pressing template 304 is used, when the quantitative pressing template 303 is driven to a fixed position inside the bottom die 2 through the lifting assembly 302, gypsum slurry prepared by mixing gypsum powder and water is injected into the bottom die 2 through the injection opening 315, and the telescopic assembly 313 is started at intervals to drive the pressing template 314 to move in the vertical direction, so that gypsum slurry accumulated near the injection opening 315 is flattened to be uniformly distributed inside the bottom die 2, and the problem that the follow-up gypsum slurry cannot be stably injected due to the fact that the gypsum slurry is accumulated near the injection opening 315 and the test board is formed to be inconsistent with the bottom die 2, so that the test board is disqualified is avoided.
Secondly, the compression molding plate 314 is driven by the telescopic component 313 to reciprocate along the vertical direction to compact the gypsum slurry for multiple times, so that the manufactured test plate is matched with the bottom die 2 to meet the experimental detection requirement, the thickness of the test plate manufactured each time is ensured to be the same, and the accuracy of the measurement result is improved.
The injection port 315 includes an injection hole 317 provided in the platen 314 and an injection pipe 318 provided in the platen 314 and communicating with the injection hole 317, and an injection funnel 319 for injecting gypsum slurry is connected to the injection pipe 318.
In use, the inlet 315 directs the gypsum slurry into the inlet funnel 319, and the gypsum slurry enters the bottom die 2 along the inlet pipe 318 and inlet 317, completing the injection of the gypsum slurry for the preparation of the test panel.
Secondly, in the process of up-and-down movement of the compression molding plate 314 and the expansion assembly 313, the injection funnel 319 is driven to synchronously move through the injection pipeline 318, so that normal injection of gypsum slurry is ensured, and the stability of the injection funnel 319 in the movement process is ensured through the injection pipeline 318.
And the injection funnel 319 is driven to move up and down through the injection pipeline 318 to shake the gypsum slurry in the injection funnel 319, so as to assist the gypsum slurry to be injected into the bottom die 2.
The connecting column 311 and the jacking connecting plate 312 are used for providing an installation position and a telescopic space for the telescopic assembly 313, the connecting column 311 is arranged on one side of the quantitative die combination plate 303, which is away from the bottom die 2, and the lifting assembly 302 penetrates the jacking connecting plate 312 or the lifting assembly 302 is located beside the jacking connecting plate 312 so as to avoid interference between the lifting assembly 302 and the jacking connecting plate 312. .
Further, the telescopic assembly 313 may be provided in plurality and symmetrically disposed about the center line of the pressing connection plate 312 to improve the stability of the pressing plate 314 during movement.
The inner wall of the injection funnel 319 is provided with an auxiliary connecting plate 320 along the horizontal direction, the auxiliary connecting plate 320 is provided with an adjusting screw 321 along the vertical direction, an extension sleeve 322 is sleeved on the adjusting screw 321 in a threaded manner, the end part of the extension sleeve 322 is connected with a sealing plate 324 for sealing the outlet of the injection pipeline 318 through a rotating assembly 323, a plurality of seepage channels 325 for seepage of gypsum slurry are arranged on the sealing plate 324, and two ends of the seepage channels 325 are positioned on two different diameters of the adjusting screw 321.
When the bottom die 2 is filled and abuts against one side of the pressing die plate 314, the adjusting screw 321 is driven to rotate to drive the extension sleeve 322 to move towards the direction of the injection pipeline 318, the extension sleeve 322 drives the sealing plate 324 to enter the injection pipeline 318, when the sealing plate 324 enters the injection hole 317 and the bottom of the sealing plate 324 moves to the same plane with one side of the pressing die plate 314, which contacts gypsum slurry, the sealing plate 324 is used for sealing the injection hole 317, so that the flatness of the surface of the manufactured test plate is guaranteed, and the accuracy of the detection result is improved.
Second, by providing the permeate channel 325, the sealing plate 324 forces gypsum slurry from the permeate channel 325 through the sealing plate 324 to the exterior as the sealing plate 324 enters the injection conduit 318, ensuring that the sealing plate 324 normally enters the interior of the injection conduit 318 to seal the injection orifice 317.
And when the sealing plate 324 enters the injection pipeline 318, the sealing plate 324 is driven to rotate by the rotating component 323, so that the influence on the measurement result of the test plate caused by the coagulation of the gypsum slurry in the permeation channel 325 and the gypsum slurry in the bottom die 2 when the sealing plate 324 contacts the gypsum slurry compacted in the bottom die 2 is avoided.
Second, the ends of the permeate channel 325 are positioned on two different diameters of the adjusting screw 321 to be inclined with respect to the surface of the gypsum slurry inside the bottom mold 2 so that the closing plate 324 can assist the gypsum slurry to pass through the permeate channel 325 when rotated.
The closing plate 324 includes a connection base plate 326 connected to the end of the extension sleeve 322 by a rotation assembly 323 and a contact plate 327 fixedly connected to a side of the connection base plate 326 remote from the extension sleeve 322 by fastening bolts, receiving chambers 328 are commonly provided on both side walls of the connection base plate 326 in contact with the contact plate 327, and the receiving chambers 328 are communicated with one sides of the plurality of penetration passages 325.
In use, the closing plate 324 rotates the connecting base plate 326 and the contact plate 327 synchronously, thereby allowing the gypsum slurry to pass through the permeate channel 325, and allowing the permeate channel 325 on the contact plate 327 to scrape the surface of the gypsum slurry in the bottom mold 2 and enter the receiving cavity 328, thereby avoiding the problem of condensation with the gypsum slurry in the bottom mold 2 due to the accumulation of more gypsum slurry in the permeate channel 325.
A plurality of sliding columns 329 are arranged on one side of the die plate 314, which is close to the top pressure connecting plate 312, and the sliding columns 329 are symmetrically arranged on the central line of the die plate 314 along the horizontal direction and penetrate through the quantitative die plate 303 to the other side.
The stability of the stamper 314 in the up-and-down movement is improved by limiting the path of the stamper 314 in the movement by the plurality of slide posts 329 being provided.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.
Claims (5)
1. A measuring device for a method for measuring flexural strength of calcined gypsum,
The method for measuring the flexural strength of the plaster of paris comprises the following steps,
S100, manufacturing a gypsum board mould, wherein the length, the width and the height of the gypsum board mould are respectively 260mm, 40mm and 40mm, simultaneously coating demoulding oil in the gypsum board mould, and adjusting the supporting distance of a universal testing machine to 220mm;
S200, pouring water into a stirrer according to the water consumption of standard consistencies, weighing 1000g of gypsum powder, pouring the gypsum powder into the water for 5 seconds, immediately stirring, pouring the gypsum powder into a gypsum board die after 50 seconds of stirring, compacting under the condition of controlling the volume and pressing, lifting the gypsum board die for 1cm, and then falling and repeating for three times;
The condition of controlling the amount and jacking is specifically to control the internal volume of the gypsum board mould to be a fixed value and gradually jacking the gypsum slurry in the process of filling the gypsum slurry into the gypsum board mould until filling is completed;
S300, taking out a molded test block in the gypsum board die, placing the test block on a universal testing machine with the side face upwards for anti-folding test, recording readings after the three test blocks are folded, and taking an average value to be accurate to 1N;
The method is characterized in that: the measuring device comprises a sample preparation table (1) and a bottom die (2) arranged on the sample preparation table (1), wherein a die clamping mechanism (3) connected with the sample preparation table (1) is arranged on the bottom die (2), and the die clamping mechanism (3) is used for quantitatively compacting gypsum slurry injected into the bottom die (2);
The mold clamping mechanism (3) comprises a connecting bracket (301) penetrating through the bottom mold (2) and connected with the sample preparation table (1) and a plurality of lifting assemblies (302) arranged on the connecting bracket (301), quantitative mold clamping plates (303) are arranged at the end parts of the lifting assemblies (302) together, and a top pressing mold plate (304) for pressing gypsum slurry in the bottom mold (1) is arranged at the bottom of the quantitative mold clamping plates (303);
The top pressing template (304) comprises a plurality of connecting columns (311) which are perpendicular to the surface of the quantitative pressing template (303) and are arranged on one side of the quantitative pressing template (303), a plurality of top pressing connecting plates (312) which are parallel to a horizontal plane are arranged on the connecting columns (311) together, a telescopic assembly (313) is arranged at the bottom of each top pressing connecting plate (312), a pressing template (314) for pressing gypsum slurry is arranged at the end of each telescopic assembly (313), an injection port (315) for passing the gypsum slurry is arranged on each pressing template (314), and through grooves (316) for passing the telescopic assembly (313) and the injection ports (315) are formed in the quantitative pressing template (303);
the injection port (315) comprises an injection hole (317) arranged on the pressing die plate (314) and an injection pipeline (318) arranged on the closing die plate (314) and communicated with the injection hole (317), and the injection pipeline (318) is connected with an injection funnel (319) for injecting gypsum slurry;
Be provided with auxiliary connection board (320) along the horizontal direction on the inner wall of injection funnel (319), be provided with adjusting screw (321) along vertical direction on auxiliary connection board (320), extension sleeve (322) have been cup jointed to screw on adjusting screw (321), the tip of extension sleeve (322) is connected with through rotating assembly (323) and is used for sealing injection pipeline (318) export closure board (324), be provided with a plurality of infiltration passageway (325) that supply gypsum thick liquid to ooze on closure board (324), just the both ends of infiltration passageway (325) are located on two different diameters of adjusting screw (321).
2. The measuring device for a method of measuring flexural strength of calcined gypsum according to claim 1, wherein: the connecting support (301) comprises a plurality of support posts (305) penetrating through the bottom die (2) and arranged on the sample preparation table (1) and distributed along the horizontal linear direction, a plurality of positioning assemblies (306) used for fixing the bottom die (2) to the sample preparation table (1) are arranged on the support posts (305) together, a plurality of notch grooves (307) for the support posts (305) to pass through are formed in one side of the bottom die (2), and a plurality of lifting assemblies (302) are respectively arranged on the corresponding support posts (305).
3. The measuring device for a method of measuring flexural strength of calcined gypsum according to claim 2, wherein: the positioning assembly (306) comprises a plurality of strip-shaped connecting plates (308) arranged on the support posts (305) along the horizontal direction, a plurality of fixing bolts (309) penetrating through the bottom die (2) and being in threaded connection with the sample preparation table (1) are arranged on the strip-shaped connecting plates (308) along the vertical direction, and pressing plates (310) propped against the tops of the bottom die (1) are arranged on each fixing bolt (309).
4. A measuring apparatus for a method of measuring flexural strength of plaster of paris according to claim 3, characterized in that: the sealing plate (324) comprises a connecting bottom plate (326) connected to the end part of the extension sleeve (322) through a rotating assembly (323) and a contact plate (327) fixedly connected to one side, far away from the extension sleeve (322), of the connecting bottom plate (326), wherein two side walls, contacted with the contact plate (327), of the connecting bottom plate (326) are jointly provided with a containing cavity (328), and the containing cavity (328) is communicated with one side of a plurality of permeation channels (325).
5. The measuring device for a method of measuring flexural strength of calcined gypsum according to claim 1, wherein: a plurality of sliding columns (329) are arranged on one side, close to the jacking connecting plate (312), of the pressing die plate (314), and the sliding columns (329) are symmetrically arranged on the central line, along the horizontal direction, of the pressing die plate (314) and penetrate through the quantitative die plate (303) to the other side.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905480A (en) * | 2010-07-30 | 2010-12-08 | 昆明安雅达建材科技有限公司 | Decorative plasterboard vibration molding equipment |
| CN205580877U (en) * | 2016-04-20 | 2016-09-14 | 广东省建筑科学研究院集团股份有限公司 | Multi -functional transverse strength test device |
| CN107352933A (en) * | 2017-06-05 | 2017-11-17 | 南充市高坪区江峰石膏有限公司 | A kind of light-weight building gypsum block and its production method |
| CN109534754A (en) * | 2019-01-16 | 2019-03-29 | 徐州工业职业技术学院 | A kind of preparation method of high pervious concrete |
| CN209707276U (en) * | 2019-03-13 | 2019-11-29 | 绍兴市容纳测控技术有限公司 | A kind of cement bending test device |
| WO2020114149A1 (en) * | 2018-12-03 | 2020-06-11 | 中国科学院地质与地球物理研究所 | Sample making die for rock body structural surface shear test |
| CN211682661U (en) * | 2018-12-06 | 2020-10-16 | 德化富安陶瓷科技有限公司 | Self-adaptive pressure-adjusting gypsum mold pressing device |
| CN212432834U (en) * | 2020-06-23 | 2021-01-29 | 天津雍阳建设工程质量检测中心 | Anti testing machine that rolls over of cement with limit function |
-
2022
- 2022-01-06 CN CN202210010347.9A patent/CN114441335B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905480A (en) * | 2010-07-30 | 2010-12-08 | 昆明安雅达建材科技有限公司 | Decorative plasterboard vibration molding equipment |
| CN205580877U (en) * | 2016-04-20 | 2016-09-14 | 广东省建筑科学研究院集团股份有限公司 | Multi -functional transverse strength test device |
| CN107352933A (en) * | 2017-06-05 | 2017-11-17 | 南充市高坪区江峰石膏有限公司 | A kind of light-weight building gypsum block and its production method |
| WO2020114149A1 (en) * | 2018-12-03 | 2020-06-11 | 中国科学院地质与地球物理研究所 | Sample making die for rock body structural surface shear test |
| CN211682661U (en) * | 2018-12-06 | 2020-10-16 | 德化富安陶瓷科技有限公司 | Self-adaptive pressure-adjusting gypsum mold pressing device |
| CN109534754A (en) * | 2019-01-16 | 2019-03-29 | 徐州工业职业技术学院 | A kind of preparation method of high pervious concrete |
| CN209707276U (en) * | 2019-03-13 | 2019-11-29 | 绍兴市容纳测控技术有限公司 | A kind of cement bending test device |
| CN212432834U (en) * | 2020-06-23 | 2021-01-29 | 天津雍阳建设工程质量检测中心 | Anti testing machine that rolls over of cement with limit function |
Non-Patent Citations (1)
| Title |
|---|
| 利用正交实验改进石膏性能;胡晓洪;邓丽萍;徐平;姜安宁;;中国陶瓷;20051230(06);第27-29页 * |
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Address after: 314000 375 Haigang Avenue, Xitangqiao street, Haiyan County, Jiaxing City, Zhejiang Province Applicant after: Mount Taishan Gypsum (Jiaxing) Co.,Ltd. Address before: 314000 375 Haigang Avenue, Xitangqiao street, Haiyan County, Jiaxing City, Zhejiang Province Applicant before: BEIJING NEW BUILDING MATERIAL (JIAXING) CO.,LTD. |
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