CN111693016A - Device for quickly and accurately measuring density of homogeneous fireproof insulation board - Google Patents

Device for quickly and accurately measuring density of homogeneous fireproof insulation board Download PDF

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Publication number
CN111693016A
CN111693016A CN202010456104.9A CN202010456104A CN111693016A CN 111693016 A CN111693016 A CN 111693016A CN 202010456104 A CN202010456104 A CN 202010456104A CN 111693016 A CN111693016 A CN 111693016A
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CN
China
Prior art keywords
plate
density
box body
homogeneous
sleeve
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010456104.9A
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Chinese (zh)
Inventor
张艳
储茂德
李心进
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Anqing Kairui Building Material Co ltd
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Anqing Kairui Building Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Anqing Kairui Building Material Co ltd filed Critical Anqing Kairui Building Material Co ltd
Priority to CN202010456104.9A priority Critical patent/CN111693016A/en
Publication of CN111693016A publication Critical patent/CN111693016A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/28Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring areas

Abstract

The invention discloses a device for quickly and accurately measuring the density of a homogeneous fireproof heat-insulation board, which comprises a base, wherein a supporting plate and an electronic platform scale are sequentially arranged on the top of the base from left to right, a groove is formed in the right side of the upper surface of the supporting plate, a capacity cylinder is arranged in the groove of the supporting plate, four sleeves are fixedly arranged on the top of the supporting plate, a sleeve rod is movably connected in each sleeve, the top of each sleeve rod is fixedly provided with the supporting plate, the outer surface of each sleeve rod is sleeved with a compression spring, the bottom and the top of each compression spring are respectively and fixedly connected with the top of each sleeve and the bottom of the corresponding supporting plate, a box body is fixedly arranged between the tops of the four supporting plates, the bottom of the box body is respectively provided with a vibration motor and a discharge pipe, a valve is arranged on each discharge pipe. According to the invention, the density can be rapidly and accurately measured by measuring the total volume and the total mass of the density of the homogeneous fireproof insulation board.

Description

Device for quickly and accurately measuring density of homogeneous fireproof insulation board
Technical Field
The invention relates to the technical field of homogeneous fireproof insulation boards, in particular to a device for quickly and accurately measuring the density of a homogeneous fireproof insulation board.
Background
The homogeneous modified fireproof insulation board is an insulation board with good fireproof performance for building energy-saving engineering, which is prepared by taking mineral raw materials and an adhesive modifier as main inorganic cementing materials, adding a proper amount of additives such as foaming and the like as auxiliary materials into composite expanded polystyrene foam particles, adding water, mixing and stirring, pressing and molding by a die or equipment, maintaining, processing and the like, and along with the enhancement of the lightweight concept of the insulation building material, new requirements are provided for the density of the insulation building material, so the density of the homogeneous modified fireproof insulation board is detected before use, the traditional detection is that the homogeneous modified fireproof insulation board is cut into specified sizes, then the length, the width and the thickness of each homogeneous modified fireproof insulation board are measured by a ruler, the volume of the homogeneous modified fireproof insulation board is obtained, and finally the quality of each homogeneous modified fireproof insulation board is measured in sequence, the density of each homogeneous modified fireproof insulation board is calculated, the densities of different homogeneous modified fireproof insulation boards are averaged, the detection process is not only complicated, but also the size error in measurement is large, and therefore the density measurement is not accurate enough.
The device for quickly and accurately measuring the density of the homogeneous fireproof insulation board is provided for solving the problems of low density measurement efficiency and poor accuracy of the traditional homogeneous fireproof insulation board.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a device for quickly and accurately measuring the density of a homogeneous fireproof insulation board, and solves the problems of low density measurement efficiency and inaccurate measurement of a homogeneous modified fireproof insulation board.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a device for quickly and accurately measuring the density of homogeneous fireproof insulation boards comprises a base, wherein a bottom plate and an electronic platform scale are sequentially arranged at the top of the base from left to right, a groove is formed in the right side of the upper surface of the bottom plate, a volumetric cylinder is placed in the groove of the bottom plate, four sleeves are fixedly arranged at the top of the bottom plate, a sleeve rod is movably connected in each sleeve, a supporting plate is fixedly arranged at the top of each sleeve rod, a compression spring is sleeved on the outer surface of each sleeve rod, the bottom and the top of each compression spring are fixedly connected with the top of each sleeve and the bottom of each supporting plate respectively, a box body is fixedly arranged between the tops of the four supporting plates, a vibration motor and a discharging pipe are arranged at the bottom of the box body respectively, a valve is arranged on each discharging pipe, a first blanking plate and a second blanking plate are fixedly arranged on the inner bottom wall of the box body, two be equipped with slide bar and lead screw between the riser respectively, swing joint has screw-nut on the lead screw, screw-nut's top and bottom respectively fixed mounting have sliding sleeve and scraper blade, and swing joint between the top of sliding sleeve and the slide bar, the left side the left surface fixed mounting of riser has positive and negative motor, positive and negative motor's output run through the left side riser and with the left end fixed connection of lead screw, the top of electronic platform scale is equipped with places the board.
Preferably, the bottom of base is equipped with the rubber pad, and the lower surface of rubber pad is equipped with anti-skidding stripe.
Preferably, the left side of the capacity cylinder is provided with scale marks, and the volume of the capacity cylinder is zero and two cubic meters.
Preferably, the four sleeves are distributed on the top of the bottom plate in a matrix arrangement, and the vertical length value between two adjacent sleeves is zero eight meters.
Preferably, the tops of the first blanking plate and the second blanking plate are both in arc-shaped design.
Preferably, the space volume enclosed by the first blanking plate, the second blanking plate and the box body is zero and two cubic meters.
Preferably, the sliding rod is welded with the vertical plates on the left side and the right side, and the screw rod is rotatably connected with the vertical plates on the left side and the right side.
Preferably, the bottom of the scraper is flush with the top of the box body.
(III) advantageous effects
The invention provides a device for quickly and accurately measuring the density of a homogeneous fireproof heat-insulation plate, which has the following beneficial effects:
(1) this a device for quick accurate measurement homogeneous fire prevention heated board density, the cooperation between vibrating motor, sleeve pipe, loop bar, bottom plate, compression spring, backup pad and the box can guarantee that the sand fills the space between the homogeneous fire prevention heated board completely, guarantees the accuracy of homogeneous fire prevention heated board volume.
(2) This a device for quick accurate measurement homogeneous fire prevention heated board density, the cooperation between positive and negative motor, lead screw, riser, screw-nut, sliding sleeve, slide bar and the scraper blade, the surface that can realize the sand in the last box is level and smooth completely, is unanimous with the top of box moreover, also provides the assurance to the homogeneous fire prevention heated board volume accurate measurement in later stage.
(3) This a device for quick accurate measurement homogeneous fire prevention heated board density, flitch, discharging pipe and the cooperation between the valve under first flitch, second can guarantee that the sand is whole to enter into the volumetric cylinder, guarantees the accurate measurement to the sand volume.
(3) This a device for quick accurate measurement homogeneous fire prevention heated board density, the volume of sand in the volume section of thick bamboo is convenient for accurate reading of scale mark on the volume section of thick bamboo, and is convenient high-efficient more.
(3) This a device for quick accurate measurement homogeneous fire prevention heated board density has avoided the measurement of various length, width and thickness among the tradition in the whole measurement, has significantly reduced the measuring link that has the error to make final measuring result more accurate.
Drawings
FIG. 1 is a front view of the body of the present invention;
FIG. 2 is a cut-away view of a front cross-sectional view of the housing of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of the position relationship between the sleeve and the base plate according to the present invention;
FIG. 5 is a top view of the housing of the present invention.
In the figure: the device comprises a base 1, a bottom plate 2, an electronic platform scale 3, a volumetric cylinder 4, a sleeve 5, a sleeve 6, a supporting plate 7, a compression spring 8, a box body 9, a vibration motor 10, a discharge pipe 11, a valve 12, a first blanking plate 13, a second blanking plate 14, a vertical plate 15, a slide rod 16, a screw rod 17, a screw nut 18, a sliding sleeve 19, a scraping plate 20, a positive and negative motor 21 and a placing plate 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a device for quickly and accurately measuring the density of a homogeneous fireproof heat-insulation board comprises a base 1, wherein a rubber pad is arranged at the bottom of the base 1, anti-skid stripes are arranged on the lower surface of the rubber pad, the stability of the device is improved, a bottom plate 2 and an electronic platform scale 3 are sequentially arranged at the top of the base 1 from left to right, a groove is formed in the right side of the upper surface of the bottom plate 2, a capacity cylinder 4 is placed in the groove of the bottom plate 2, scale marks are arranged on the left side surface of the capacity cylinder 4, the volume of sand in the capacity cylinder 4 is convenient to read, the volume of the capacity cylinder 4 is zero two cubic meters, four sleeves 5 are fixedly arranged at the top of the bottom plate 2, the four sleeves 5 are distributed at the top of the bottom plate 2 in a matrix arrangement mode, the vertical length value between every two adjacent sleeves 5 is zero eight meters, the stability of the device is improved, sleeve rods 6 are movably connected in, the outer surface of the loop bar 7 is sleeved with a compression spring 8, the bottom and the top of the compression spring 8 are respectively fixedly connected with the top of the sleeve 5 and the bottom of the supporting plate 7, a box body 9 is fixedly installed between the tops of the four supporting plates 7, the bottom of the box body 9 is respectively provided with a vibration motor 10 and a discharge pipe 11, a valve 12 is arranged on the discharge pipe 11, a first discharge plate 13 and a second discharge plate 14 are fixedly installed on the inner bottom wall of the box body 9, the tops of the first discharge plate 13 and the second discharge plate 14 are both in arc design, so that the discharge of sand at the back is convenient, the whole discharge of the sand in the box body 9 is ensured, the space volume enclosed by the first discharge plate 13, the second discharge plate 14 and the box body 9 is zero two cubic meters, vertical plates 15 are fixedly installed on the left side surface and the right side surface of the top of the box body 9, a slide bar 16 and a lead screw, and be connected for rotating between the riser 15 of lead screw 17 and the left and right sides, swing joint has screw-nut 18 on the lead screw 17, screw-nut 18's top and bottom fixed mounting have sliding sleeve 19 and scraper blade 20 respectively, the bottom of scraper blade 20 flushes with the top of box 9 mutually, ensure that the sand can just fill up inside box 9, and swing joint between sliding sleeve 19's top and the slide bar 16, the left surface fixed mounting of left side riser 15 has positive and negative motor 21, positive and negative motor 21's output run through left side riser 15 and with the left end fixed connection of lead screw 17, the top of electronic platform balance 3 is equipped with places board 22.
The working principle is as follows: the device for quickly and accurately measuring the density of the homogeneous fireproof heat-insulation plate comprises the steps of drying the homogeneous fireproof heat-insulation plate to be measured, cutting the dried homogeneous fireproof heat-insulation plate into a plurality of small blocks, placing the small blocks on a placing plate 22, opening an electronic platform scale 3 for weighing, recording the total mass M of the homogeneous fireproof heat-insulation plate and the internal volume V1 of a box body 9, wherein V1 is the space volume enclosed by a first blanking plate 13, a second blanking plate 14 and the box body 9, V1 is zero two cubic meters, then placing all the small blocks of the homogeneous fireproof heat-insulation plate into the box body 9, closing a valve 12, starting a vibrating motor 10, adding dry sand into the box body 9, and enabling the box body 9 to vibrate up and down continuously by the vibration of the vibrating motor 10 in a matching manner with a compression spring 8, a sleeve 5, a loop bar 6 and a supporting plate 7, so that the sand can fill the gaps among the small blocks of the homogeneous fireproof heat-insulation plates, the vibrating motor 10 is closed until the sand completely covers the surface of the homogeneous fireproof heat-insulation plate, then the sand is continuously added, when the upper surface of the sand is close to the box body 9, the positive and negative motor 21 is started, the positive and negative motor 21 drives the screw rod 17 to rotate in a reciprocating manner, then the screw rod nut 18 on the screw rod 17 moves left and right in a reciprocating manner along the screw rod 17 under the matching of the sleeve 5 and the sleeve rod 6, then the scraper 20 under the screw rod nut 18 is driven to scrape the sand in the box body 9, the sand is slowly added, the positive and negative motor 21 is closed until the whole box body 9 is completely scraped, the sand adding is stopped, then the valve 12 is opened, all the sand in the box body 9 finally falls into the volumetric cylinder 4, the volumetric cylinder 4 is shaken uniformly, the volume V2 of the sand in the volumetric cylinder 4 is accurately read, and then the volume of the homogeneous fireproof heat-insulation plate is (V1-V2), and calculating the density M of the homogeneous fireproof heat-insulation plate divided by (V1-V2).
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a device for quick accurate measurement homogeneous fire prevention heated board density, includes base (1), its characterized in that: the top of the base (1) is sequentially provided with a bottom plate (2) and an electronic platform scale (3) from left to right, the right side of the upper surface of the bottom plate (2) is provided with a groove, a volumetric cylinder (4) is placed in the groove of the bottom plate (2), the top of the bottom plate (2) is fixedly provided with four sleeves (5), each sleeve (5) is internally and movably connected with a sleeve rod (6), the top of each sleeve rod (6) is fixedly provided with a supporting plate (7), the outer surface of each sleeve rod (7) is sleeved with a compression spring (8), the bottom and the top of each compression spring (8) are respectively and fixedly connected with the top of each sleeve (5) and the bottom of each supporting plate (7), a box body (9) is fixedly arranged between the tops of the four supporting plates (7), and the bottom of each box body (9) is respectively provided with a vibration motor (10) and a discharge pipe, a valve (12) is arranged on the discharge pipe (11), a first blanking plate (13) and a second blanking plate (14) are fixedly arranged on the inner bottom wall of the box body (9), vertical plates (15) are fixedly arranged on the left side surface and the right side surface of the top of the box body (9), a sliding rod (16) and a screw rod (17) are respectively arranged between the two vertical plates (15), a screw rod nut (18) is movably connected on the screw rod (17), the top and the bottom of the screw rod nut (18) are respectively and fixedly provided with a sliding sleeve (19) and a scraper (20), the top of the sliding sleeve (19) is movably connected with the sliding rod (16), a positive and negative motor (21) is fixedly arranged on the left side surface of the vertical plate (15) on the left side, the output end of the positive and negative motor (21) runs through the left vertical plate (15) and is fixedly connected with the left end of the screw rod (17), and the top of the electronic platform scale (3) is provided with a placing plate (22).
2. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the bottom of the base (1) is provided with a rubber pad, and the lower surface of the rubber pad is provided with anti-skid stripes.
3. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the left side of the capacity cylinder (4) is provided with scale marks, and the volume of the capacity cylinder (4) is zero and two cubic meters.
4. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the four sleeves (5) are distributed on the top of the bottom plate (2) in a matrix arrangement mode, and the vertical length value between every two adjacent sleeves (5) is zero point eight meters.
5. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the tops of the first blanking plate (13) and the second blanking plate (14) are both in arc-shaped design.
6. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the space volume enclosed by the first blanking plate (13), the second blanking plate (14) and the box body (9) is zero and two cubic meters.
7. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the sliding rod (16) is welded with the vertical plates (15) on the left side and the right side, and the screw rod (17) is rotatably connected with the vertical plates (15) on the left side and the right side.
8. The device for rapidly and accurately measuring the density of the homogeneous fireproof heat-insulation plate according to claim 1, wherein the device comprises: the bottom of the scraper (20) is flush with the top of the box body (9).
CN202010456104.9A 2020-05-26 2020-05-26 Device for quickly and accurately measuring density of homogeneous fireproof insulation board Withdrawn CN111693016A (en)

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CN202010456104.9A CN111693016A (en) 2020-05-26 2020-05-26 Device for quickly and accurately measuring density of homogeneous fireproof insulation board

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Application Number Priority Date Filing Date Title
CN202010456104.9A CN111693016A (en) 2020-05-26 2020-05-26 Device for quickly and accurately measuring density of homogeneous fireproof insulation board

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112729194A (en) * 2020-12-30 2021-04-30 黄春峰 Intelligent thickness detection device for polyethylene plastic product
CN112986484A (en) * 2021-02-20 2021-06-18 山东银山耐火材料有限公司 Quality nuclear detection device for production of aluminum silicon carbide carbon refractory material

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1896716A (en) * 2006-06-20 2007-01-17 长春吉大科学仪器设备有限公司 Vibration cereal weight
CN101187616A (en) * 2006-11-17 2008-05-28 于波涛 Cement density determination method
EP1964591A1 (en) * 2007-02-27 2008-09-03 Institut Curie Bolus for radiotherapy and method of determining the shape of such a bolus
CN102735579A (en) * 2011-03-24 2012-10-17 阿自倍尔株式会社 Density measuring system and density measuring method
CN104215549A (en) * 2014-09-12 2014-12-17 广东华路交通科技有限公司 Density testing method of mineral aggregate in recycled asphalt pavement material
CN207894774U (en) * 2018-03-15 2018-09-21 河北工程大学 A kind of industry bulk material falling particles current density tester
JP2018151215A (en) * 2017-03-10 2018-09-27 大成建設株式会社 Crack width specifying method
CN108592836A (en) * 2018-04-28 2018-09-28 深圳大学 A kind of solid volume measuring device
CN207964540U (en) * 2018-03-06 2018-10-12 青海华通能源技术应用有限公司 A kind of slurry density analyzer
CN109932279A (en) * 2019-03-19 2019-06-25 河海大学 A kind of apparatus and method using bulk strain measurement fluid density
US10586208B2 (en) * 2018-07-16 2020-03-10 Accel Robotics Corporation Smart shelf system that integrates images and quantity sensors

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1896716A (en) * 2006-06-20 2007-01-17 长春吉大科学仪器设备有限公司 Vibration cereal weight
CN101187616A (en) * 2006-11-17 2008-05-28 于波涛 Cement density determination method
EP1964591A1 (en) * 2007-02-27 2008-09-03 Institut Curie Bolus for radiotherapy and method of determining the shape of such a bolus
CN102735579A (en) * 2011-03-24 2012-10-17 阿自倍尔株式会社 Density measuring system and density measuring method
CN104215549A (en) * 2014-09-12 2014-12-17 广东华路交通科技有限公司 Density testing method of mineral aggregate in recycled asphalt pavement material
JP2018151215A (en) * 2017-03-10 2018-09-27 大成建設株式会社 Crack width specifying method
CN207964540U (en) * 2018-03-06 2018-10-12 青海华通能源技术应用有限公司 A kind of slurry density analyzer
CN207894774U (en) * 2018-03-15 2018-09-21 河北工程大学 A kind of industry bulk material falling particles current density tester
CN108592836A (en) * 2018-04-28 2018-09-28 深圳大学 A kind of solid volume measuring device
US10586208B2 (en) * 2018-07-16 2020-03-10 Accel Robotics Corporation Smart shelf system that integrates images and quantity sensors
CN109932279A (en) * 2019-03-19 2019-06-25 河海大学 A kind of apparatus and method using bulk strain measurement fluid density

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
E.MIHLAYANLAR 等: "Analysis of the effect of production pricess parameters and density of expanded polysty rene insulation boards on mechanical proprrties and thermal conductivity", 《MATERIALS & DESIGN》 *
李苑 等: "PU保温板密度测量结果不变确定度的评定", 《建筑节能》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112729194A (en) * 2020-12-30 2021-04-30 黄春峰 Intelligent thickness detection device for polyethylene plastic product
CN112729194B (en) * 2020-12-30 2022-08-16 赵乾 Intelligent thickness detection device for polyethylene plastic product
CN112986484A (en) * 2021-02-20 2021-06-18 山东银山耐火材料有限公司 Quality nuclear detection device for production of aluminum silicon carbide carbon refractory material

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Application publication date: 20200922