An asphalt test extraction device

Abstract

The present invention relates to the technical field of engineering material measurement, and specifically relates to an asphalt test and detection extraction device, which includes a nested sieve, a screening base, and a centrifugal extractor. The nested sieve includes several sleeves. A sieve plate is arranged inside the sleeve. The sieve plate is rotatably installed in the sleeve through a hinge shaft. A rotation drive unit for driving the sieve plate to rotate around the hinge shaft is arranged outside the sleeve. A limiting convex block protruding upward is arranged at one end of the sieve plate away from the hinge shaft; a first limiting groove is arranged on the inner wall of the sleeve on the side away from the hinge shaft. An insertion hole communicating with the outside of the sleeve is arranged on one side of the first limiting groove. A partition plate of the same width as the sieve plate is arranged outside the sleeve. The partition plate is inserted into the sleeve through the insertion hole and is located below the inclined sieve plate. By setting an inclined sieve plate and an insertable partition plate in this technical solution, when the sieve plate is inclined to drain water, the partition plate can effectively prevent the mixed liquid remaining at the bottom of the upper sieve plate from flowing onto the material on the lower sieve plate, improving the accuracy of subsequent aggregate gradation detection.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering material measurement, and specifically relates to an asphalt test detection extraction device. Background Art

[0002] Test detection work is an important part of highway engineering construction technology management. It uses advanced detection equipment to reasonably control construction quality and scientifically evaluate engineering quality by quantitative methods. Asphalt and mineral aggregates are the main components of asphalt mixtures. Asphalt content and aggregate gradation directly affect the strength and durability of asphalt mixtures and are the core of the quality of road surfaces. After using an asphalt extractor to complete the extraction of an asphalt sample, the user needs to take away the sieve and measure the weight of the mineral aggregates on the sieve. However, after the user picks up the sieve, there is a solvent and asphalt mixture remaining at the bottom of the sieve, which affects the test accuracy.

[0003] Chinese Patent CN112881228B discloses an asphalt mixture extractor and an asphalt content determination method. The asphalt mixture extractor includes a solvent tank, a condensation tank, and a centrifugal extractor. The centrifugal extractor includes a control box, a conical screening seat, a centrifugal cylinder, a spray cover, a nested sieve, and an extraction filter cartridge. The asphalt mixture extractor further includes a drainage bracket for obliquely setting the nested sieve directly above the conical screening seat. The drainage bracket and the centrifugal cylinder are relatively arranged on both sides of the conical screening seat. The drainage bracket includes a support column, a support plate, and a fixing hook. The support column is arranged on the top of the control box. The support plate is hinged to the top of the support column and is used to support the side wall of the nested sieve. The side of the support plate close to the nested sieve matches the outer arc of the nested sieve. The fixing hook is arranged on the bottom of the support plate close to the nested sieve and is used to place the nested sieve.

[0004] After the extraction of the sample solution by this asphalt mixture extractor is completed, the nested sieve is obliquely set directly above the conical screening seat through the drainage bracket to drain the remaining mixture at the bottom of the nested sieve. However, there are multiple filter plates in the nested sieve. If the aggregate gradation needs to be measured, the mineral aggregates on each filter plate in the nested sieve are dried and sieved to analyze the proportion of each particle size. During the process of inclined drainage, the remaining mixed liquid at the bottom of the upper filter plate will contaminate the materials on the lower filter plate, affecting the subsequent test accuracy of the asphalt cost. Summary of the Invention

[0005] In view of the above problems, it is necessary to provide an asphalt test detection extraction device for the problems of the prior art.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] An asphalt test extraction device includes a nested sieve, a screening base, and a centrifugal extractor. The nested sieve includes several sleeves. The cross-section of the sleeve is rectangular. Installation edge strips surrounding the outer wall of the sleeve are provided at the upper and lower ends of the sleeve. The nested sieve also includes a hoop for fixing the installation edge strips of the upper and lower two sleeves. A sieve plate is arranged inside the sleeve. The outer wall of the sieve plate fits the inner wall of the sleeve. One end of the sieve plate is provided with a horizontal hinge shaft. The sieve plate is rotationally installed in the sleeve through the hinge shaft. A rotation driving unit for driving the sieve plate to rotate around the hinge shaft is arranged outside the sleeve. A limiting convex block protruding upward is arranged at the end of the sieve plate away from the hinge shaft. A first limiting groove is arranged on the inner wall of the sleeve on the side away from the hinge shaft. When the sieve plate fits the first limiting groove, it is in a horizontal state. An insertion hole communicating with the outside of the sleeve is arranged on one side of the first limiting groove. The width of the insertion hole is the same as the width of the sieve plate. The limiting convex block of the sieve plate in the horizontal state blocks the insertion hole. A partition plate of the same width as the sieve plate is arranged outside the sleeve. The partition plate is inserted into the sleeve through the insertion hole and is located below the inclined sieve plate. A positioning stop strip is arranged at the end of the partition plate away from the hinge shaft. When the end of the partition plate entering the sleeve fits the inner wall of the sleeve, the positioning stop strip fits the outer wall of the insertion hole.

[0008] Preferably, a semi-circular groove fitting the outer wall of the hinge shaft is arranged on the inner wall of the sleeve near the hinge shaft; on the side of each limiting convex block facing the inside of the sleeve, it is perpendicular to the surface of the sieve plate. When the sieve plate fits the first limiting groove, the side of the limiting convex block facing the inner wall of the sleeve is flush with the inner wall of the sleeve; the insertion holes of each sleeve extend obliquely. A second limiting groove is arranged below the first limiting groove in each sleeve. When the sieve plate in the lower sleeve rotates around the hinge shaft to fit the second limiting groove in the upper sleeve, the bottom of the sieve plate is flush with the upper side of the insertion hole.

[0009] Preferably, an air cavity is arranged inside each hoop on the side of the insertion hole. An air inlet pipe is arranged on one side of the air cavity. The air inlet pipe is communicated with the output end of a gas source located outside the nested sieve. An air outlet hole is arranged below the air cavity; a guiding strip is arranged inside the partition plate in the positioning stop strip. An air inlet hole is arranged at the top of the positioning stop strip. When the positioning stop strip blocks the insertion hole, a blowing channel parallel to the lower surface of the inclined sieve plate is formed between the top of the guiding strip and the upper side of the insertion hole. The air inlet hole is aligned with the air outlet hole below the hoop.

[0010] Preferably, a vertical surrounding edge is arranged around the partition plate. Drainage holes are arranged on the surrounding edges on both sides of the guiding strip; a sewage box is arranged on one side of the nested sieve close to the partition plate. Vertical sewage pipes extending upward are arranged on both sides of the sewage box. On the opposite sides of the two sewage pipes, sewage inlet holes of the same number as the partition plates are arranged. A placement plate is arranged at the sewage inlet holes. When the positioning stop strip of the partition plate is placed at the placement plate, the drainage holes are aligned with the sewage inlet holes; the height of the sewage inlet holes is lower than the insertion holes on the sleeve at the same horizontal position.

[0011] Preferably, a downward-opening slot is provided below one end of the partition away from the positioning baffle bar, and an elastic plug plate located below the insertion hole is elastically mounted on the upper side of each hoop, and the top of the elastic plug plate is arc-shaped. When the partition moves to disengage from the insertion hole, the elastic plug plate is inserted into the slot; the elastic plug plate fits the outer wall of the sleeve, and a plurality of guide rods extending vertically downward are provided at the bottom of the elastic plug plate, and the guide rods are inserted into a guide sleeve provided on the upper side of the hoop, and a spring is provided on the outer sleeve of the guide sleeve, and the spring elastically connects the upper side of the hoop with the bottom of the elastic plug plate, and the elasticity of the spring causes the elastic plug plate to move upward to fit the bottom of the partition.

[0012] Preferably, each partition is provided with insertion columns at both ends of the positioning baffle, the axis of the insertion columns is parallel to the axis of the hinge shaft, each partition is inserted into the movable frame through the insertion columns, the movable frame is vertically arranged, and a handle is provided on the movable frame; a positioning sleeve is provided on the movable frame, and a positioning hole is provided on the positioning sleeve.

[0013] Preferably, a first positioning sleeve is provided on the side of the sleeve facing the sewage box, and a first positioning pin is inserted on the first positioning sleeve. When the positioning baffle of the partition fits the insertion hole of the sleeve, the axis of the first positioning pin and the axis of the positioning hole are on the same straight line, and the first positioning pin is inserted in the positioning hole; a second positioning sleeve is provided on the sewage pipe, and a second positioning pin is inserted in the second positioning sleeve. When the positioning baffle fits the placement plate, the axis of the second positioning pin and the axis of the positioning hole are on the same straight line, and the second positioning pin is inserted in the positioning hole.

[0014] Preferably, a pumping box is slidably installed in the sewage box, and the bottom end of the sewage pipe is located above the pumping box.

[0015] Preferably, a feed hopper is provided at the top of the sleeve located at the top of the screen.

[0016] Preferably, the rotary drive unit includes a driving gear coaxially mounted on the hinge shaft and extending to one end outside the sleeve, and the driving gears outside all the screen plates are connected via a transmission chain; the rotary drive unit also includes a turntable coaxially mounted on one of the driving gears, and a handle is eccentrically arranged on the turntable.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, the present invention provides a tiltable sieve plate and an insertable partition. When the sieve plate is tilted for drainage, the partition can effectively block the residual mixed liquid at the bottom of the upper sieve plate from flowing to the material on the lower sieve plate, thereby solving the problem of the residual mixed liquid at the bottom of the upper filter plate polluting the material on the lower filter plate during the tilted drainage process of the existing set of sieves, and improving the accuracy of subsequent asphalt content and mineral grading detection.

[0019] Second, through the cooperation of the air source, the intake pipe, the air cavity, the air outlet holes, and the air inlet holes, the present invention actively pushes the residual mixed liquid on the surface of the sieve plate through gas to accelerate its flow. The design of the blowing channel parallel to the lower surface of the sieve plate enables the air flow to evenly cover the surface of the sieve plate, greatly shortening the water drainage time compared to natural drainage and improving the overall test efficiency.

[0020] Third, the present invention is provided with structures such as a surrounding edge, a sewage discharge hole, a sewage discharge box, a sewage discharge pipe, and a sewage inlet hole, which can effectively guide the mixed liquid on the partition plate into the sewage discharge box for unified collection. The elastic plug plate can position one end of the partition plate away from the sewage discharge hole, so that when the positioning bar of the partition plate is placed on the placement plate, it is lower than the end of the partition plate away from the sewage discharge hole, ensuring that the mixed liquid on the partition plate flows towards the sewage discharge hole. And through the positioning of the elastic plug plate, the higher end of the partition plate is located below the air outlet holes at this time, and the gas blown out from the air outlet holes can accelerate the flow of the mixed liquid in the partition plate towards the sewage discharge hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of an asphalt test extraction device in the first working state;

[0022] Figure 2 is a perspective view of an asphalt test extraction device in the second working state;

[0023] Figure 3 is a perspective view of the nested sieve of an asphalt test extraction device in the first working state;

[0024] Figure 4 is Figure 3 a partial enlarged view of part A of

[0025] Figure 5 is a side view of the nested sieve of an asphalt test extraction device in the first working state;

[0026] Figure 6 is Figure 5 a sectional view taken along line B-B of

[0027] Figure 7 is Figure 6 a partial enlarged view of part C of

[0028] Figure 8 is Figure 6 a partial enlarged view of part D of

[0029] Figure 9 is a perspective view of the nested sieve of an asphalt test extraction device in the second working state;

[0030] Figure 10 is Figure 9 a partial enlarged view of part E of

[0031] Figure 11 is Figure 9 the partial enlarged view of part F of

[0032] Figure 12 the side view of the nested sieve of an asphalt test extraction device in the second working state;

[0033] Figure 13 is Figure 12 the sectional view taken along line G - G of

[0034] Figure 14 is Figure 13 the partial enlarged view of part H of

[0035] Figure 15 is Figure 13 the partial enlarged view of part I of

[0036] The reference numerals in the figure are: 1, nested sieve; 11, screening base; 12, centrifugal extractor; 2, sleeve; 21, mounting edge strip; 22, first limiting groove; 221, insertion hole; 23, second limiting groove; 3, ferrule; 31, air cavity; 311, intake pipe; 312, air source; 313, air outlet hole; 32, elastic insertion plate; 321, guide rod; 322, guide sleeve; 323, spring; 33, first positioning sleeve; 331, first positioning pin; 4, sieve plate; 41, hinge shaft; 42, rotation drive unit; 421, drive gear; 422, drive chain; 423, turntable; 424, handle; 43, limiting projection; 5, partition plate; 51, positioning stop bar; 511, guiding strip; 512, air intake hole; 513, insertion post; 52, surrounding edge; 521, sewage discharge hole; 53, clamping groove; 54, moving frame; 541, positioning sleeve; 542, positioning hole; 6, sewage discharge box; 61, sewage discharge pipe; 611, sewage inlet hole; 612, placement plate; 62, second positioning sleeve; 621, second positioning pin. Specific Embodiments

[0037] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Refer to Figures 1 to 15 :

[0039] An asphalt test extraction device includes a nested sieve 1, a screening base 11 and a centrifugal extractor 12 (in combination with Figure 1 , Figure 2 and Figure 6), the nested sieve 1 includes a plurality of sleeves 2. The cross-section of the sleeve 2 is rectangular. Installation edge strips 21 surrounding the outer wall of the sleeve 2 are provided at the upper and lower ends of the sleeve 2. The nested sieve 1 further includes a hoop 3 for fixing the installation edge strips 21 of the upper and lower sleeves 2. A sieve plate 4 is arranged inside the sleeve 2. The outer wall of the sieve plate 4 fits the inner wall of the sleeve 2. One end of the sieve plate 4 is provided with a horizontal hinge shaft 41 (as Figure 7 shown). The sieve plate 4 is rotatably installed in the sleeve 2 through the hinge shaft 41. A rotary drive unit 42 for driving the sieve plate 4 to rotate around the hinge shaft 41 is arranged outside the sleeve 2. A limiting lug 43 protruding upward is provided at one end of the sieve plate 4 away from the hinge shaft 41. A first limiting groove 22 is arranged on the inner wall of the sleeve 2 on the side away from the hinge shaft 41. The sieve plate 4 is in a horizontal state when it fits the first limiting groove 22. An insertion hole 221 communicating with the outside of the sleeve 2 is arranged on one side of the first limiting groove 22. The width of the insertion hole 221 is the same as the width of the sieve plate 4. The limiting lug 43 of the sieve plate 4 in the horizontal state blocks the insertion hole 221. A partition 5 with the same width as the sieve plate 4 is arranged outside the sleeve 2. The partition 5 is inserted into the sleeve 2 through the insertion hole 221 and is located below the inclined sieve plate 4 (combined with Figures 13 - 15 ). A positioning stop bar 51 is arranged at one end of the partition 5 away from the hinge shaft 41. When the end of the partition 5 entering the sleeve 2 fits the inner wall of the sleeve 2, the positioning stop bar 51 fits the outer wall of the insertion hole 221.

[0040] When this application is in use, first, install the nested sieve 1, and fix the installation edge strips 21 of the upper and lower sleeves 2 through the ferrule 3 to make the nested sieve 1 an integral whole. Then place the nested sieve 1 on the screening seat 11 and use it in conjunction with the centrifugal extractor 12. The asphalt solution mixed with the reagent enters each sleeve 2 inside the nested sieve 1. In the initial state, the sieve plate 4 is in a horizontal state to filter the asphalt solution. When the sieve plate 4 is in a horizontal state, the limit lug 43 on one side of the sieve plate 4 blocks the insertion hole 221 on the side wall of the sleeve 2 to prevent harmful gas leakage. When the extraction is completed, start the rotary drive unit 42 to drive the sieve plate 4 to rotate around the hinge shaft 41, so that the sieve plate 4 changes from a horizontal state to an inclined state. At this time, the residual solvent and asphalt mixture on the sieve plate 4 in the sleeve 2 will flow down along the inclined sieve plate 4 for draining operation. After the sieve plate 4 is inclined, insert the partition plate 5 into the inside of the sleeve 2 through the insertion hole 221 and locate it below the inclined sieve plate 4. Make the positioning strip 51 at the end of the partition plate 5 away from the hinge shaft 41 fit the outer wall of the insertion hole 221 to ensure that the partition plate 5 is installed in place and block the insertion hole 221. In this way, the mixture remaining at the bottom of the upper sieve plate 4 will be blocked by the partition plate 5 when flowing down and will not flow onto the materials on the lower sieve plate 4. After the draining is completed, the aggregates on the sieve plates 4 in each sleeve 2 can be taken out for drying, and then sieved to analyze the proportion of each particle size to determine the aggregate gradation. Due to the blocking effect of the partition plate 5, the pollution of the lower layer of materials by the residual mixture on the upper layer is avoided, ensuring the purity of the aggregates and providing accurate samples for subsequent detection. In this embodiment, by setting the tiltable sieve plate 4 and the insertable partition plate 5, when the sieve plate 4 is tilted for draining, the partition plate 5 can effectively block the residual mixture remaining at the bottom of the upper sieve plate 4 from flowing onto the materials on the lower sieve plate 4, solving the problem that the residual mixture at the bottom of the upper filter plate contaminates the materials on the lower filter plate during the inclined draining process of the existing nested sieve, and improving the accuracy of subsequent detection of asphalt content and aggregate gradation.

[0041] In order to ensure the comprehensive filtration of the asphalt solution by the sieve plate 4 and the locking of the inclination angle of the sieve plate 4, the following features are specifically set:

[0042] On the inner wall of one side of the sleeve 2 close to the hinge shaft 41, there is a semi-circular groove that fits the outer wall of the hinge shaft 41; on the side of each limit lug 43 facing the inside of the sleeve 2, it is perpendicular to the surface of the sieve plate 4. When the sieve plate 4 fits the first limit groove 22, the side of the limit lug 43 facing the inner wall of the sleeve 2 is flush with the inner wall of the sleeve 2; the insertion hole 221 of each sleeve 2 extends obliquely, and each sleeve 2 is provided with a second limit groove 23 below the first limit groove 22. When the sieve plate 4 in the lower sleeve 2 rotates around the hinge shaft 41 to fit the second limit groove 23 in the upper sleeve 2 (from Figure 6 state is adjusted to Figure 13 state), the bottom of the sieve plate 4 is flush with the upper side of the insertion hole 221.

[0043] In this embodiment, since a semi-circular groove that fits the outer wall of the hinge shaft 41 is provided on the inner wall of one side of the sleeve 2 close to the hinge shaft 41, when installing the sieve plate 4, the hinge shaft 41 is placed in the semi-circular groove, so that the sieve plate 4 can be stably rotatably installed in the sleeve 2. When the sieve plate 4 fits the first limit groove 22, the sieve plate 4 is in a horizontal state. At this time, the side of the limit projection 43 facing the inner wall of the sleeve 2 is flush with the inner wall of the sleeve 2, and the limit projection 43 blocks the insertion hole 221, ensuring that during the filtration of the asphalt solution, the solution will not flow out of the insertion hole 221, and ensuring the comprehensive filtration of the asphalt solution by the sieve plate 4. When water drainage is required after the extraction is completed, the sieve plate 4 rotates around the hinge shaft 41. When the sieve plate 4 in the lower sleeve 2 rotates around the hinge shaft 41 to fit the second limit groove 23 in the upper sleeve 2, at this time, the bottom of the sieve plate 4 is flush with the upper side of the insertion hole 221, the sieve plate 4 reaches a predetermined inclination angle, and is locked by the second limit groove 23, and stably maintains this inclination angle for water drainage operation. The partition plate 5 entering the sleeve 2 along the inclined insertion hole 221 remains parallel to the sieve plate 4. In this embodiment, the semi-circular groove on the inner wall of the sleeve 2 can closely fit the hinge shaft 41, so that the sieve plate 4 is firmly installed, and can ensure the comprehensive filtration of the asphalt solution in the horizontal state, avoiding the leakage of the solution from the connection between the sieve plate 4 and the sleeve 2, and improving the filtration effect and extraction efficiency. The setting of the second limit groove 23 can accurately lock the inclination angle of the sieve plate 4, ensure that the angles of each sieve plate 4 during inclined water drainage are the same, is conducive to stable water drainage operation, and ensures the consistency and reliability of the water drainage effect.

[0044] In order to improve the efficiency of water drainage, the following features are specifically set:

[0045] An air cavity 31 is provided inside one side of each ferrule 3 located at the insertion hole 221. An air inlet pipe 311 is provided on one side of the air cavity 31. The air inlet pipe 311 communicates with the output end of an air source 312 located outside the sleeve sieve 1. An air outlet hole 313 is provided below the air cavity 31; a guiding strip 511 is provided inside the positioning stop strip 51 of the partition plate 5. An air inlet hole 512 is provided at the top of the positioning stop strip 51. When the positioning stop strip 51 blocks the insertion hole 221, a blowing channel parallel to the lower surface of the inclined sieve plate 4 is formed between the top of the guiding strip 511 and the upper side of the insertion hole 221, and the air inlet hole 512 is aligned with the air outlet hole 313 below the ferrule 3.

[0046] In this embodiment, after the partition plate 5 is tilted and inserted, the positioning stop bar 51 blocks the insertion hole 221. At this time, a blowing channel parallel to the lower surface of the inclined sieve plate 4 is formed between the top of the guiding bar 511 and the upper side of the insertion hole 221. At the same time, the air inlet hole 512 on the positioning stop bar 51 is aligned with the air outlet hole 313 below the ferrule 3. When the air source 312 located outside the sleeve sieve 1 is turned on, the gas enters the air cavity 31 through the air inlet pipe 311, then is discharged through the air outlet hole 313 below the air cavity 31, enters the air inlet hole 512 of the positioning stop bar 51, and finally passes through the blowing channel formed between the top of the guiding bar 511 and the upper side of the insertion hole 221, and blows parallel to the lower surface of the inclined sieve plate 4. The airflow acts on the solvent and asphalt mixture remaining on the surface of the sieve plate 4, accelerating the flow and dripping of the mixture and quickly completing the water drainage process. In this embodiment, through the cooperation of the air source 312, the air inlet pipe 311, the air cavity 31, the air outlet hole 313, and the air inlet hole 512, the remaining mixture on the surface of the sieve plate 4 is actively pushed by the gas to accelerate the flow. The design of the blowing channel parallel to the lower surface of the sieve plate 4 enables the airflow to evenly cover the surface of the sieve plate 4, significantly shortening the water drainage time compared with natural drainage and improving the overall test efficiency.

[0047] In order to facilitate the unified collection of the mixture on the partition plate 5, the following features are specifically set:

[0048] A vertically upward surrounding edge 52 is provided on the peripheral side of the partition plate 5, and sewage discharge holes 521 are provided on the surrounding edge 52 on both sides of the guiding bar 511; a sewage discharge box 6 is provided on one side of the sleeve sieve 1 close to the partition plate 5, and vertically upward extending sewage discharge pipes 61 are provided on both sides of the sewage discharge box 6. On the opposite side of the two sewage discharge pipes 61, there are sewage inlet holes 611 with the same number as the partition plates 5. A placement plate 612 is provided at the sewage inlet hole 611 (as Figure 10 shown). When the positioning stop bar 51 of the partition plate 5 is placed at the placement plate 612, the sewage discharge hole 521 is aligned with the sewage inlet hole 611; the height of the sewage inlet hole 611 is lower than the insertion hole 221 on the sleeve 2 at the same horizontal position.

[0049] After the sieve plate 4 is tilted, the partition plate 5 is inserted, and the air source 312 is turned on to accelerate water drainage in this embodiment. At this time, the partition plate 5 receives the solvent and asphalt mixture flowing down from the sieve plate 4. Since the vertical upward edge 52 is provided on the periphery of the partition plate 5, the mixture is restricted within the range of the edge 52 of the partition plate 5, preventing the mixture from overflowing from the four sides of the partition plate 5. When the partition plate 5 is withdrawn from the insertion hole 221, the positioning bar 51 of the partition plate 5 is placed at the placement plate 612 on the sewage discharge pipes 61 on both sides of the sewage discharge tank 6. At this time, the sewage discharge holes 521 on the edge 52 on both sides of the guiding bar 511 on the partition plate 5 are aligned with the sewage inlet holes 611 on the sewage discharge pipes 61. Since the height of the sewage inlet holes 611 is lower than the insertion holes 221 on the sleeve 2 at the same horizontal position, under the action of gravity, the mixture on the partition plate 5 flows into the sewage inlet holes 611 through the sewage discharge holes 521, and then enters the sewage discharge tank 6, realizing the unified collection of the mixture. By setting structures such as the edge 52, the sewage discharge holes 521, the sewage discharge tank 6, the sewage discharge pipes 61, and the sewage inlet holes 611 in this embodiment, the mixture on the partition plate 5 can be effectively guided into the sewage discharge tank 6 for unified collection, avoiding the random spilling and pollution of the mixture. The placement plate 612 is provided at the sewage inlet holes 611, making the placement and positioning of the partition plate 5 more convenient and accurate, and enabling the quick alignment of the sewage discharge holes 521 and the sewage inlet holes 611, improving the efficiency of the mixture discharge operation. Moreover, the height of the sewage inlet holes 611 is lower than that of the insertion holes 221, and the natural discharge of the mixture is realized by using the action of gravity, without additional power equipment, and the operation is simple and convenient.

[0050] In order to avoid the situation that after the partition plate 5 is withdrawn from the insertion hole 221, it cannot be ensured that the end of the partition plate 5 far from the sewage discharge hole 521 is higher than the end provided with the sewage discharge hole 521, the following features are specifically set:

[0051] A downward-opening clamping groove 53 is provided below the end of the partition plate 5 far from the positioning bar 51. An elastic insertion plate 32 (as shown in Figure 8 shown) is elastically installed on the upper side of each hoop 3 and is located below the insertion hole 221. The top end of the elastic insertion plate 32 is arc-shaped. When the partition plate 5 moves to disengage from the insertion hole 221, the elastic insertion plate 32 is inserted into the clamping groove 53; the elastic insertion plate 32 fits against the outer wall of the sleeve 2. A plurality of guide rods 321 extending vertically downward are provided at the bottom of the elastic insertion plate 32. The guide rods 321 are inserted into the guide sleeves 322 provided on the upper side of the hoop 3. A spring 323 is sleeved outside the guide sleeve 322. The spring 323 elastically connects the upper side of the hoop 3 and the bottom of the elastic insertion plate 32. The elasticity of the spring 323 causes the elastic insertion plate 32 to move upward to fit against the bottom of the partition plate 5.

[0052] When the partition plate 5 is inserted into the insertion hole 221 for operations such as water drainage and mixture discharge, the elastic insertion plate 32 moves upward under the elastic action of the spring 323 (as shown in Figure 14As shown in the figure), it is attached to the bottom of the partition plate 5. When it is necessary to pull out the partition plate 5 from the insertion hole 221, the partition plate 5 is pulled outwards. As the partition plate 5 gradually disengages from the insertion hole 221, when the card slot 53 below the end of the partition plate 5 away from the positioning stop bar 51 moves to the position of the elastic insertion plate 32, due to the elastic force of the spring 323, the elastic insertion plate 32 will quickly be inserted into the card slot 53 (as Figure 8 shown in the figure). Since the top end of the elastic insertion plate 32 is arc-shaped, it can position the end of the partition plate 5 away from the sewage discharge hole 521, so that when the positioning stop bar 51 of the partition plate 5 is placed on the placement plate 612, it is lower than the end of the partition plate 5 away from the sewage discharge hole 521, ensuring that the mixed liquid on the partition plate 5 flows towards the sewage discharge hole 521. And through the positioning of the elastic insertion plate 32, at this time, the higher end of the partition plate 5 is located below the air outlet hole 313, and the gas blown out from the air outlet hole 313 can accelerate the flow of the mixed liquid in the partition plate 5 towards the sewage discharge hole 521.

[0053] In order to drive the synchronous movement of all the partition plates 5 and lock the position and inclination angle of the partition plates 5, the following features are specifically set:

[0054] At both ends of the positioning stop bar 51 of each partition plate 5, there are insertion columns 513. The axis of the insertion column 513 is parallel to the axis of the hinge shaft 41. Each partition plate 5 is inserted onto the moving frame 54 through the insertion column 513. The moving frame 54 is vertically arranged, and there is a handle on the moving frame 54; there is a positioning sleeve 541 on the moving frame 54, and there is a positioning hole 542 on the positioning sleeve 541.

[0055] On the side of the ferrule 3 facing the sewage tank 6, there is a first positioning sleeve 33. A first positioning pin 331 is inserted into the first positioning sleeve 33 (as Figure 12 shown in the figure). When the positioning stop bar 51 of the partition plate 5 fits the insertion hole 221 of the sleeve 2, the axis of the first positioning pin 331 is on the same straight line as the axis of the positioning hole 542, and the first positioning pin 331 is inserted into the positioning hole 542; on the sewage pipeline 61, there is a second positioning sleeve 62. A second positioning pin 621 is inserted into the second positioning sleeve 62. When the positioning stop bar 51 fits the placement plate 612, the axis of the second positioning pin 621 is on the same straight line as the axis of the positioning hole 542, and the second positioning pin 621 is inserted into the positioning hole 542.

[0056] In this embodiment, each partition plate 5 is inserted onto the moving frame 54 through the insertion columns 513 located at both ends of the positioning stop bar 51. Since the axis of the insertion column 513 is parallel to the axis of the hinge shaft 41, the stable installation of the partition plate 5 on the moving frame 54 can be ensured. At this time, the moving frame 54 is vertically arranged and is provided with a handle on it, which is convenient for the operator to hold the handle to move the moving frame 54, thereby driving all the partition plates 5 to move synchronously. When the positioning stop bar 51 of the partition plate 5 abuts against the insertion hole 221 of the sleeve 2, the axis of the first positioning pin 331 on the first positioning sleeve 33 on the side of the ferrule 3 facing the sewage discharge tank 6 is in the same straight line as the axis of the positioning hole 542 of the positioning sleeve 541 on the moving frame 54. The first positioning pin 331 is inserted into the positioning hole 542 to lock the positions of the moving frame 54 and the partition plate 5, ensuring that the partition plate 5 will not move during the water drainage process and guaranteeing the stability of the device. Similarly, when the positioning stop bar 51 of the partition plate 5 abuts against the placement plate 612 on the sewage discharge pipe 61, the axis of the second positioning pin 621 in the second positioning sleeve 62 on the sewage discharge pipe 61 is in the same straight line as the axis of the positioning hole 542. The second positioning pin 621 is inserted into the positioning hole 542 to position the moving frame 54 and the partition plate 5 again, ensuring the stable position of the partition plate 5 during the discharge of the mixed liquid and at the same time ensuring the accurate alignment of the sewage discharge hole 521 and the sewage inlet hole 611 so that the mixed liquid can be discharged smoothly.

[0057] In order to collect the mixed liquid discharged from the sewage discharge pipe 61, the following features are specifically set:

[0058] A draw box is slidably installed in the sewage discharge tank 6, and the bottom end of the sewage discharge pipe 61 is located above the draw box.

[0059] When the sieve plate 4 is inclined for water drainage, the residual solvent and asphalt mixture on the sieve plate 4 flow along the inclined sieve plate 4 to the partition plate 5, and then flow into the sewage discharge pipe 61 through the sewage discharge hole 521 on the partition plate 5. Since the bottom end of the sewage discharge pipe 61 is located above the draw box, the asphalt solution and other mixed liquids flowing down from the sewage discharge pipe 61 will directly fall into the draw box in the sewage discharge tank 6. By providing a slidable draw box in the sewage discharge tank 6 in this embodiment, the asphalt solution and other mixed liquids discharged from the sewage discharge pipe 61 can be conveniently collected. Compared with directly collecting the mixed liquid in the sewage discharge tank 6, using the draw box can more conveniently take out the mixed liquid for treatment, improving the work efficiency and reducing the cumbersome operations during the treatment of the mixed liquid.

[0060] In order to facilitate the entry and discharge of the asphalt solution into and out of the sleeve sieve 1, the following features are specifically set:

[0061] The sleeve sieve 1 is provided with a feed hopper at the top end of the uppermost sleeve 2.

[0062] The setting of the feed hopper provides a dedicated channel for the asphalt solution to enter the sleeve sieve 1, making the entry of the solution more convenient and smooth.

[0063] In order to achieve the change of the rotation angle of all the sieve plates 4 simultaneously, the following features are specifically set:

[0064] The rotation driving unit 42 includes a driving gear 421 coaxially installed at one end of the hinge shaft 41 extending outside the sleeve 2, and the driving gears 421 outside all the sieve plates 4 are connected by a transmission chain 422; the rotation driving unit 42 further includes a turntable 423 coaxially installed on one of the driving gears 421, and a handle 424 is eccentrically arranged on the turntable 423.

[0065] When water drainage is required after the extraction operation is completed, the operator holds the handle 424 and rotates the handle 424 around the center of the turntable 423. Since the turntable 423 is coaxially installed on one of the driving gears 421, the rotation of the handle 424 drives the turntable 423 to rotate, and then drives the driving gear 421 to rotate. Because the driving gears 421 outside all the sieve plates 4 are connected by a transmission chain 422, when one of the driving gears 421 rotates, the transmission chain 422 will drive the other driving gears 421 to rotate synchronously. Also, because the driving gear 421 is coaxially installed at one end of the hinge shaft 41 extending outside the sleeve 2, and the hinge shaft 41 is fixedly connected to the sieve plate 4, the rotation of the driving gear 421 will drive the sieve plate 4 to rotate around the hinge shaft 41 through the hinge shaft 41, realizing the simultaneous change of the rotation angle of all the sieve plates 4 from the horizontal state to the inclined state for water drainage operation. When the sieve plate 4 rotates to release the insertion hole 221, the partition plate 5 can be inserted into the insertion hole 221 to fit the bottom of the limit convex block 43, locking the inclined state of the sieve plate 4.

[0066] Working principle: The asphalt solution mixed with the reagent enters each sleeve 2 in the nested sieve 1. In the initial state, the sieve plate 4 is in the horizontal state to filter the asphalt solution. When the sieve plate 4 is in the horizontal state, the limit convex block 43 on one side of the sieve plate 4 blocks the insertion hole 221 on the side wall of the sleeve 2 to prevent harmful gas leakage. After the extraction is completed, the rotation driving unit 42 is started to drive the sieve plate 4 to rotate around the hinge shaft 41, so that the sieve plate 4 changes from the horizontal state to the inclined state. At this time, the residual solvent and asphalt mixture on the sieve plate 4 in the sleeve 2 will flow down along the inclined sieve plate 4 for water drainage operation. After the sieve plate 4 is inclined, the partition plate 5 is inserted into the inside of the sleeve 2 through the insertion hole 221 and is located below the inclined sieve plate 4. The positioning strip 51 at the end of the partition plate 5 away from the hinge shaft 41 is attached to the outer wall of the insertion hole 221 to ensure that the partition plate 5 is installed in place and block the insertion hole 221. In this way, the mixed liquid remaining at the bottom of the upper sieve plate 4 will be blocked by the partition plate 5 when flowing down and will not flow onto the materials on the lower sieve plate 4. After the water drainage is completed, the ore on the sieve plates 4 in each sleeve 2 can be taken out for drying, and then sieved to analyze the proportion of each particle size to determine the ore gradation.

[0067] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. An extraction device for asphalt test detection, comprising a nested sieve, a screening base and a centrifugal extractor. The nested sieve includes a plurality of sleeves, and is characterized in that, The cross-section of the sleeve is rectangular. Installation edge strips surrounding the outer wall of the sleeve are provided at the upper and lower ends of the sleeve. The sleeve sieve further includes a hoop for fixing the installation edge strips of the upper and lower sleeves. A sieve plate is arranged inside the sleeve. The outer wall of the sieve plate fits against the inner wall of the sleeve. One end of the sieve plate is provided with a horizontal hinge shaft. The sieve plate is rotationally installed inside the sleeve through the hinge shaft. A rotary drive unit for driving the sieve plate to rotate around the hinge shaft is arranged outside the sleeve. A limiting lug protruding upward is provided at the end of the sieve plate away from the hinge shaft. A first limiting groove is arranged on the inner wall of the sleeve on the side away from the hinge shaft. The sieve plate is in a horizontal state when it fits against the first limiting groove. An insertion hole communicating with the outside of the sleeve is arranged on one side of the first limiting groove. The width of the insertion hole is the same as the width of the sieve plate. The limiting lug of the sieve plate in the horizontal state plugs the insertion hole. A partition plate of the same width as the sieve plate is arranged outside the sleeve. The partition plate is inserted into the sleeve through the insertion hole and is located below the inclined sieve plate. A positioning stop strip is arranged at the end of the partition plate away from the hinge shaft. When the end of the partition plate entering the sleeve fits against the inner wall of the sleeve, the positioning stop strip fits against the outer wall of the insertion hole. An air cavity is arranged inside each hoop on one side of the insertion hole. An air inlet pipe is arranged on one side of the air cavity. The air inlet pipe is communicated with the output end of an air source located outside the sleeve sieve. An air outlet hole is arranged below the air cavity. A guiding strip is arranged inside the partition plate in the positioning stop strip. An air inlet hole is arranged at the top of the positioning stop strip. When the positioning stop strip plugs the insertion hole, a blowing channel parallel to the lower surface of the inclined sieve plate is formed between the top of the guiding strip and the upper side of the insertion hole. The air inlet hole is aligned with the air outlet hole below the hoop. Vertical upward surrounding edges are arranged around the partition plate. Drainage holes are arranged on the surrounding edges on both sides of the guiding strip. A sewage box is arranged on one side of the sleeve sieve close to the partition plate. Vertical upward extending sewage pipes are arranged on both sides of the sewage box. On the opposite sides of the two sewage pipes, sewage inlet holes of the same number as the partition plates are arranged. A placement plate is arranged at the sewage inlet holes. When the positioning stop strip of the partition plate is placed at the placement plate, the drainage holes are aligned with the sewage inlet holes. The height of the sewage inlet hole is lower than the insertion hole on the sleeve at the same horizontal position.

2. The asphalt test extraction device according to claim 1, characterized in that, A semicircular groove fitting against the outer wall of the hinge shaft is arranged on the inner wall of the sleeve on the side close to the hinge shaft. The side of each limiting lug facing the inside of the sleeve is perpendicular to the surface of the sieve plate. When the sieve plate fits against the first limiting groove, the side of the limiting lug facing the inner wall of the sleeve is flush with the inner wall of the sleeve. The insertion holes of each sleeve extend obliquely. A second limiting groove is arranged below the first limiting groove in each sleeve. When the sieve plate in the lower sleeve rotates around the hinge shaft to fit against the second limiting groove in the upper sleeve, the bottom of the sieve plate is flush with the upper side of the insertion hole.

3. An asphalt test extraction device according to claim 1, characterized in that, A downward-opening clamping groove is arranged below the end of the partition plate away from the positioning stop strip. An elastic insertion plate located below the insertion hole is elastically installed on the upper side of each hoop. The top end of the elastic insertion plate is arc-shaped. When the partition plate moves away from the insertion hole, the elastic insertion plate is inserted into the clamping groove. The elastic plug plate fits the outer wall of the sleeve, and a plurality of guide rods extending vertically downward are arranged at the bottom of the elastic plug plate. The guide rods are inserted into a guide sleeve arranged on the upper side of the hoop, and a spring is arranged on the outside of the guide sleeve. The spring elastically connects the upper side of the hoop and the bottom of the elastic plug plate. The elasticity of the spring causes the elastic plug plate to move upward to fit the bottom of the partition.

4. An asphalt test extraction device according to claim 1, characterized in that Each partition is provided with plug-in columns at both ends of the positioning bar, the axes of the plug-in columns are parallel to the axes of the hinge shafts, each partition is plugged into the moving frame through the plug-in columns, the moving frame is vertically arranged, and a handle is arranged on the moving frame; The moving frame is provided with a positioning sleeve, and the positioning sleeve is provided with a positioning hole.

5. An asphalt test extraction device according to claim 3, characterized in that, The hoop is provided with a first positioning sleeve on the side facing the sewage tank, and a first positioning pin is inserted on the first positioning sleeve. When the positioning bar of the partition is fitted into the insertion hole of the sleeve, the axis of the first positioning pin and the axis of the positioning hole are on the same straight line, and the first positioning pin is inserted in the positioning hole; A second positioning sleeve is provided on the sewage pipe, and a second positioning pin is inserted in the second positioning sleeve. When the positioning bar is attached to the placement plate, the axis of the second positioning pin is on the same straight line as the axis of the positioning hole, and the second positioning pin is inserted in the positioning hole.

6. The asphalt test extraction device according to claim 4, characterized in that, A pumping box is slidably installed in the sewage box, and the bottom end of the sewage pipe is located above the pumping box.

7. An asphalt test extraction device according to claim 4, characterized in that, The top of the sleeve of the screen set is provided with a feed hopper.

8. An asphalt test extraction device according to claim 4, characterized in that, The rotary drive unit comprises a driving gear coaxially mounted on the hinge shaft extending to one end outside the sleeve, and the driving gears outside all the screen plates are connected by a transmission chain; The rotary drive unit further comprises a turntable coaxially mounted on one of the drive gears, and a handle is eccentrically arranged on the turntable.

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