CN211678687U - Experimental screening instrument - Google Patents
Experimental screening instrument Download PDFInfo
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- CN211678687U CN211678687U CN201922220429.2U CN201922220429U CN211678687U CN 211678687 U CN211678687 U CN 211678687U CN 201922220429 U CN201922220429 U CN 201922220429U CN 211678687 U CN211678687 U CN 211678687U
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Abstract
The utility model discloses a test screening tool, which comprises a grid sieve, an adjusting baffle and a material containing box; the grid screen comprises a screen mesh at the bottom and an annular side wall, and strip-shaped holes, sliding chutes, vertical graduated scales and bolt holes I are distributed on the annular side wall; the adjusting baffle can move up and down along the sliding chute of the annular side wall, so that the passing height of the strip-shaped hole of the annular side wall can be adjusted; the material containing box is fastened on the annular side wall through bolts, and can collect needle-shaped particles and prevent the particles from splashing in the aggregate screening process. The utility model discloses simple structure, to the screening of the needle slice granule of coarse aggregate efficient, the needle slice granule content of the while that can the short-term determination coarse aggregate.
Description
Technical Field
The utility model belongs to a road engineering test equipment technical field, concretely relates to can screen out experimental screening instrument of needle slice granule in the coarse aggregate.
Background
With the continuous improvement of the quality of highway traffic construction in China, the quality control of raw materials in the construction process of infrastructure such as pavement engineering and the like is more and more strict. Aggregate, the most commonly used raw material in road engineering, is developed mainly from the aspects of strength, shape, mud content and the like when the quality of the aggregate is controlled. When the asphalt mixture is prepared, the skeleton structure formed by the coarse aggregate has a promoting effect on the strength of the asphalt mixture, but when the content of the needle-shaped particles in the coarse aggregate is too high, the grading refinement of the asphalt mixture in the rolling process can be caused, and the performance of the prepared asphalt mixture is adversely affected.
At present, when coarse aggregate screening is carried out indoors, screening is carried out only according to the size of aggregate, an effective screening method is not provided for needle-shaped aggregate, when needle-shaped particles in the coarse aggregate are screened, a manual detection and removal method is mostly adopted, the screening efficiency is low, and the effect is not ideal. The rapid determination of the content of the needle-shaped particles and the screening of the needle-shaped particles have important significance for improving the performance of the prepared asphalt mixture.
Disclosure of Invention
An object of the utility model is to provide an experimental screening instrument solves the technical problem that can not screen out needle slice granule in the coarse aggregate when coarse aggregate screening, has convenient operation, screens out efficient characteristics.
In order to achieve the above purpose, the present invention adopts the following technical solution.
A test screening tool capable of screening out needle-shaped particles in coarse aggregate comprises a grid screen, an adjusting baffle and a material containing box; the grid sieve comprises a screen mesh at the bottom and an annular side wall, and a strip-shaped hole, a sliding groove, a vertical dividing ruler and a bolt hole I are distributed in the annular side wall.
The sieve mesh of the screen is square, comprises multiple grades of specifications, specifically is 2.36mm, 4.75mm, 9.5mm, 13.2mm, 16mm, 19mm and 37.5mm in size, and can be combined with grid sieves of different specifications to screen aggregates according to test requirements when coarse aggregate screening is carried out.
Annular lateral wall is stainless steel material, and the bar hole bottom edge of the strip on the annular lateral wall is in annular lateral wall least significant end, and the length in bar hole is 100mm, highly sets gradually 1.58mm, 3.17mm, 4.4mm, 5.33mm, 6.33mm, 12.5mm, 17.7mm according to the sieve mesh specification of screen cloth.
The adjusting baffle is connected with the annular side wall through the sliding groove, the two annular lifting lugs are arranged on the upper portion of the adjusting baffle, the adjusting baffle can be operated by the annular lifting lugs to move up and down along the sliding groove, and the up-and-down movement distance can be determined by referring to the vertical dividing ruler on the annular side wall.
The adjusting baffle is provided with a strip-shaped plate, the length of the strip-shaped plate is 100mm, and the height of the strip-shaped plate is consistent with the height of a strip-shaped hole in the annular side wall matched with the strip-shaped plate.
The upper and lower limit of adjusting the baffle all sets up the bar steel sheet and consolidates, and two holes are reserved in upper and lower portion in adjusting the baffle both sides simultaneously to be furnished with two fastening screw.
The fastening screw rod can fix the adjusting baffle at a set position, so that the passing height of the strip-shaped hole in the annular side wall can be adjusted, and the needle sheet-shaped particles which do not meet the requirements can be screened out conveniently.
The material containing box comprises a material collecting box body, a bolt hole II, an one-way baffle and a hinge, the material containing box body can be fixed on the annular side wall through the bolt, the one-way baffle is connected with the material collecting box body through the hinge, and the one-way baffle can rotate around the hinge in the axial direction of the material collecting box body.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an experimental screening instrument has the bar through-hole, can sieve out the coarse aggregate that bituminous mixture preparation of different particle diameters needs fast, can further sieve out the relatively poor needle slice granule of quality according to the experimental requirement, can the different shelves of the quick determination needle slice granule content of gathering materials.
The utility model discloses an experimental screening instrument lays the bar hole of co-altitude not on the annular lateral wall, and the accessible height in bar hole can be adjusted through adjusting the baffle simultaneously, can satisfy different engineering requirements, can improve screening efficiency simultaneously.
The utility model discloses an experimental screening instrument, flourishing material box can prevent needle slice granule departure with the needle slice granule collection of sifting out, and the one-way baffle on the flourishing material box can prevent effectively that the screening from removing needle slice granule and sifting back the net sieve at the in-process of removing, guarantees the screening degree of accuracy of needle slice granule.
The utility model discloses an experimental screening instrument, the screen grid sieve is unanimous with the existing standard sieve specification that gathers materials, can cooperate the laboratory sieve shaker commonly used to gather materials the screening, can supply actual engineering to choose for use.
Drawings
FIG. 1 is a schematic structural view of a test screening tool of the present invention;
FIG. 2 is a schematic diagram of a grid screen structure;
FIG. 3 is a schematic view of the mesh screen after the adjustment baffle is fixed;
FIG. 4 is a schematic view of an adjusting baffle;
fig. 5 is a schematic structural view of the material containing box.
In the attached drawing, 1 part of a grid screen, 2 parts of an adjusting baffle, 3 parts of a material containing box, 1-1 part of an annular side wall, 1-2 parts of a chute, 1-3 parts of a vertical dividing ruler, 1-4 parts of a bolt hole I, 1-5 parts of a screen, 1-6 parts of a strip-shaped through hole, 2-1 parts of an annular lifting lug, 2-2 parts of a fastening screw, 2-3-1 parts of an upper strip-shaped steel sheet, 2-3-2 parts of a lower strip-shaped steel sheet, 2-4 parts of a strip-shaped plate, 3-1 parts of a material collecting box, 3-2 parts of a one-way baffle, 3-3 parts of a bolt hole II, 3-4 parts of a hinge, 3-.
Detailed Description
The present invention is described in detail below with reference to the attached drawings and the detailed description, and the following provides specific embodiments of the present invention, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solution of the present application fall into the protection scope of the present invention.
Example 1:
the utility model provides an experimental screening instrument. Referring to fig. 1-5, the device comprises a mesh screen 1, an adjusting baffle 2 and a material containing box 3; the grid screen 1 comprises a screen mesh 1-5 at the bottom and an annular side wall 1-1; the material containing box 3 is fixed on the annular side wall 1-1 through bolts 3-5.
Referring to fig. 2, the mesh openings of the mesh screens 1-5 at the bottom of the mesh screen 1 are square, and include multi-grade specifications, specifically, the mesh openings are 2.36mm, 4.75mm, 9.5mm, 13.2mm, 16mm, 19mm and 37.5mm, and when coarse aggregate screening is performed, mesh screens 1 with different specifications can be combined according to test requirements to screen aggregates.
Referring to fig. 2, a sliding groove 1-2, a vertical dividing ruler 1-3, a bolt hole I1-4 and a strip-shaped through hole 1-6 are distributed on an annular side wall 1-1 of a grid screen 1; the annular side wall 1-1 is made of stainless steel, and the strip-shaped holes 1-6 in the annular side wall 1-1 are of a multilayer structure, so that the screening efficiency can be improved; the bottom edge of the lowest grid of the strip-shaped through holes 1-6 is positioned at the lowest end of the annular side wall 1-1, the length of each strip-shaped through hole 1-6 is 100mm, and the height of each strip-shaped through hole is sequentially set to be 1.58mm, 3.17mm, 4.4mm, 5.33mm, 6.33mm, 12.5mm and 17.7mm according to the sieve pore specification of the sieve mesh 1-5.
Referring to fig. 3 and 4, an annular lifting lug 2-1, a fastening screw 2-2, an upper strip steel sheet 2-3-1, a lower strip steel sheet 2-3-2 and a strip plate 2-4 are arranged on the adjusting baffle 2; the adjusting baffle 2 is connected with the annular side wall 1-1 through a chute 1-2, the annular lifting lug 2-1 is used for operating the adjusting baffle 2 to move along the chute 1-2, the up-down movement distance can be determined by referring to a vertical dividing rule 1-3 on the annular side wall 1-1, and the adjusting baffle 2 can be fixed through a fastening screw rod 2-2 after moving to a set position; the length of the strip-shaped plate 2-4 is 100mm, and the height of the strip-shaped plate is consistent with that of the strip-shaped through hole 1-6 on the annular side wall 1-1 matched with the strip-shaped plate; the passing height of the strip-shaped through holes 1-6 on the annular side wall 1-1 can be changed by moving the adjusting baffle 2, so that needle flaky particles which do not meet the test requirements can be screened out conveniently; the upper strip steel sheet 2-3-1 and the lower strip steel sheet 2-3-2 are mainly used for reinforcing the adjusting baffle 2.
Referring to FIG. 5, the material containing box 3 comprises a material collecting box 3-1, bolt holes II 3-3, one-way baffles 3-2 and hinges 3-4, the material containing box 3 can be fixed on the annular side wall 1-1 through bolts 3-5, the one-way baffles 3-2 are connected with the material collecting box 3-1 through the hinges 3-4, and the one-way baffles 3-2 can rotate around the hinges 3-4 to the inner side of the material collecting box 3-1; the material containing box 3 can collect the needle flaky particles which are screened out in the screening process and do not meet the requirements and prevent the needle flaky particles from splashing, the unidirectional baffle 3-2 can effectively prevent the screened needle flaky particles from returning to the grid screen 1, and the screening accuracy is guaranteed.
The utility model discloses the working process is as follows:
(1) a plurality of test screening tools with different specifications (2.36mm, 4.75mm, 9.5mm, 13.2mm, 16mm, 19mm and 37.5mm) are prepared before coarse aggregate screening is carried out, and the standard of needle flaky particles required to be screened by the test is determined.
(2) Adjusting the adjusting baffle of the test screening tools with different specifications to completely block the strip-shaped holes of the annular side wall and fasten the strip-shaped holes, after the test screening tools with different specifications are adjusted, sequentially installing the test screening tools with different specifications on a shaker from small to large according to the mesh size of a screen mesh, further pouring coarse aggregates into the test screening tools, covering a top cover of the screening tools, then switching on a power supply to screen the coarse aggregates, the process can ensure that the coarse aggregates with different grades are distinguished, and the whole screening process lasts for 15 minutes.
(3) After the first screening process is finished, adjusting the adjusting baffle plates of the screening tools with different specifications to required positions according to the standard of the needle sheet-shaped particles screened out according to the test requirements, fastening the adjusting baffle plates after the adjustment is finished, and fixing the material containing box on the annular side wall; after experimental screening instrument of different specifications all adjusted the completion, the switch on continues to gather materials the screening, and needle slice granule can progressively be screened from the bar hole in the screening process, and the needle slice granule of sieving out gets into flourishing magazine, and the one-way baffle of flourishing magazine can prevent simultaneously that needle slice granule from getting back to the grid sieve in, and secondary screening process lasts 15 minutes.
(4) And after the screening is finished, the mass of the coarse aggregates in the grid screen and the material containing box of the test screening tools with different specifications is sequentially weighed, namely the content of the coarse aggregates is determined while the needle-shaped particles are screened out.
Claims (10)
1. A test screening tool comprises a grid screen (1), wherein the grid screen (1) comprises a bottom screen (1-5) and an annular side wall (1-1) positioned on the screen (1-5), and is characterized in that two chutes (1-2) are vertically processed on the annular side wall (1-1), and a plurality of horizontal strip-shaped through holes (1-6) are processed on the annular side wall (1-1) between the two chutes (1-2);
the experimental screening tool further comprises an adjusting baffle (2), the adjusting baffle (2) is connected to the outer side of the annular side wall (1-1) through a sliding groove (1-2), and the opening and closing of the strip-shaped through holes (1-6) are controlled through the adjusting baffle (2) along the up-down movement of the sliding groove (1-2).
2. A test screen tool according to claim 1, characterised in that all the strip-shaped through holes (1-6) are of the same length and height, the height being set according to the mesh size of the screen mesh (1-5).
3. A test screening tool according to claim 1, characterised in that two annular lifting lugs (2-1) are provided at the upper part of the adjustment screen (2), and that the adjustment screen (2) is operated by the annular lifting lugs (2-1) to move up and down along the chute (1-2).
4. A test screening tool according to claim 3, characterised in that a vertical scale (1-3) is provided outside the chute (1-2) adjacent to the chute (1-2), the distance of movement up and down being determined according to the vertical scale (1-3).
5. A test sieve tool according to claim 1, wherein strips (2-4) are provided on the adjusting blind (2) for the passage of material, the dimensions of the strips (2-4) matching the dimensions of the strip through holes (1-6).
6. Test sieve tool according to claim 1, characterised in that the upper and lower edges of the adjusting blind (2) are provided with an upper strip (2-3-1) and a lower strip (2-3-2) respectively to reinforce the adjusting blind (2), and two holes are reserved in the middle and upper parts of the two sides of the adjusting blind (2) and are provided with two fastening screws (2-2).
7. Test sieve tool according to claim 6, wherein the tightening screw (2-2) is used to fix the adjustment flap (2) in a set position and thereby adjust the passable height of the strip-shaped through hole (1-6).
8. A test sieve tool according to claim 1, wherein the test sieve tool further comprises a bin (3) for collecting sieved material.
9. The test screening tool of claim 8, wherein the material containing box (3) is fixed on the annular side wall (1-1) through bolts (3-5) and comprises a material collecting box (3-1), bolt holes II (3-3), a one-way baffle (3-2) and hinges (3-4), the one-way baffle (3-2) is positioned at the upper part of the material collecting box (3-1) and connected with the material collecting box (3-1) through the hinges (3-4), and the one-way baffle (3-2) can rotate around the inner side of the middle axial material collecting box (3-1) of the hinges (3-4).
10. A test screen tool according to claim 1, wherein the screen openings of the screens (1-5) are square, including multi-step sizes; the length of each strip-shaped through hole (1-6) is 100mm, and the height of each strip-shaped through hole is 1.58mm, 3.17mm, 4.4mm, 5.33mm, 6.33mm, 12.5mm or 17.7 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922220429.2U CN211678687U (en) | 2019-12-11 | 2019-12-11 | Experimental screening instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922220429.2U CN211678687U (en) | 2019-12-11 | 2019-12-11 | Experimental screening instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211678687U true CN211678687U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922220429.2U Expired - Fee Related CN211678687U (en) | 2019-12-11 | 2019-12-11 | Experimental screening instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211678687U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510066A (en) * | 2021-06-03 | 2021-10-19 | 浙江工业大学 | Purpose-built geotechnological sieve of coral sand and coral sand batch screening plant |
| CN114101044A (en) * | 2021-11-25 | 2022-03-01 | 中路交科检测技术有限公司 | Device for rapidly detecting aggregate needle sheet shape for concrete and use method |
| CN115365135A (en) * | 2022-09-08 | 2022-11-22 | 昆明理工大学 | Screening device for needle-shaped ballast particles |
-
2019
- 2019-12-11 CN CN201922220429.2U patent/CN211678687U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510066A (en) * | 2021-06-03 | 2021-10-19 | 浙江工业大学 | Purpose-built geotechnological sieve of coral sand and coral sand batch screening plant |
| CN114101044A (en) * | 2021-11-25 | 2022-03-01 | 中路交科检测技术有限公司 | Device for rapidly detecting aggregate needle sheet shape for concrete and use method |
| CN115365135A (en) * | 2022-09-08 | 2022-11-22 | 昆明理工大学 | Screening device for needle-shaped ballast particles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20211211 |