Intelligent device and method for rapid detection of gravel aggregate performance parameters

Abstract

The invention relates to an intelligent device and method for rapid detection of gravel aggregate performance parameters, and belongs to the technical field of gravel aggregate screening, the intelligent device comprises a fixing support and a screening assembly arranged on the fixing support, the screening assembly comprises a roller shell vertically arranged on the fixing support, and multiple layers of roller screens are arranged in the roller shell layer by layer; the roller screens are rotationally connected with the roller shell in the circumferential direction of the roller screens, the hole diameters of the roller screens are gradually reduced from inside to outside in the radial direction of the roller shell, and the driving mechanism is arranged on the fixing support. The rotary screen is simple in structure and suitable for screening requirements of different particle size specifications, gravel aggregate is screened and classified through multiple layers of rotary screens with different pore diameters, the conditions of aggregate secondary crushing and dust escaping caused by high-frequency impact are avoided, and the gravel aggregate screening and classifying accuracy and use convenience are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sand and gravel aggregate screening, and particularly relates to an intelligent device and method for rapid detection of performance parameters of sand and gravel aggregate. BACKGROUND

[0002] In the field of building engineering, sand and gravel aggregate, as a core component of basic building materials such as concrete and asphalt mixture, directly affects the stability and durability of engineering structures in terms of particle size distribution, moisture content and quality parameters. In particular, in high-standard and high-strength engineering projects, accurate detection of aggregate performance has become a key link to ensure construction quality. In the industry, manual screening method is generally used for screening and grading aggregate. First, the aggregate sample is sampled according to the specification requirements, and then the sample is placed in a standard screen group with the aperture arranged from large to small, and is screened step by step from top to bottom until no obvious particles pass through each screen layer. Then, the mass of each screen layer and the bottom disc material is weighed, and the proportion is calculated and the particle size distribution curve is drawn. However, the manual screening method for screening and grading sand and gravel aggregate not only has low efficiency and high labor intensity, but also cannot meet the demand of large-scale production, and subjective errors may occur during manual operation, which affects the accuracy of sand and gravel aggregate grading and the quality of subsequent proportioning.

[0003] At present, the existing technology mainly uses a vibrating screening machine for screening and grading aggregate, which can improve the efficiency of aggregate grading and avoid subjective errors, thereby ensuring the accuracy of sand and gravel aggregate grading and the quality of subsequent proportioning. However, the existing vibrating screening machine adopts a single-layer or fixed-layer screen structure, and when the screen needs to be replaced or adjusted, the screen above it needs to be removed, which makes the operation process of the screen complicated and difficult to quickly adapt to different screening specifications required by national standards (such as multi-level screening and grading requirements from 4.75 mm to 0.075 mm). In addition, the vibrating screening machine is prone to secondary crushing of aggregate or dust pollution due to high-frequency vibration, which reduces the accuracy and environmental friendliness of screening and grading. Therefore, the existing vibrating screening machine has poor accuracy and convenience in screening and grading sand and gravel aggregate. SUMMARY

[0004] Therefore, the present application provides an intelligent device and method for rapid detection of performance parameters of sand and gravel aggregate, which can quickly disassemble and replace the drum screen, conveniently adapt to different screening requirements of different particle sizes, and avoid secondary crushing of aggregate and dust escape caused by high-frequency impact, thereby improving the accuracy and convenience of screening and grading sand and gravel aggregate.

[0005] The technical scheme of the present application is: an intelligent device for rapid detection of performance parameters of sand and gravel aggregate, comprising a fixed support and a screening assembly arranged on the fixed support, the screening assembly comprising a drum shell vertically arranged on the fixed support, the drum shell being connected with the fixed support, a plurality of drum screens being arranged in the drum shell layer by layer and coaxial with the center line of the drum shell, the adjacent drum screens having equal spacing to form a plurality of annular screening channels, the drum screens being rotatably connected with the drum shell around the circumference thereof, the aperture of the drum screen gradually decreasing from inside to outside along the radial direction of the drum shell, a driving mechanism being arranged on the fixed support, the output end of the driving mechanism being connected with the drum screens for driving the drum screens to rotate so that the sand and gravel aggregate continuously passes through the plurality of drum screens for screening and grading.

[0006] Preferably, the driving mechanism comprises a first rotating shaft, a main gear, a plurality of double-row gears, a plurality of idle gears and a first rotary power unit, the first rotating shaft being arranged in the drum shell and coaxial with the center line thereof, one end of the first rotating shaft extending out of the top of the drum shell and being rotatably connected therewith, the main gear being fixedly sleeved on the other end of the first rotating shaft, the double-row gears being fixedly arranged on the top of the drum screens one by one and coaxial with the center line thereof respectively, the idle gears being arranged between the main gear and the double-row gears and the adjacent double-row gears respectively and being engaged with the main gear and the double-row gears respectively, one end of the idle gear being rotatably connected with the inner top of the drum shell, the first rotary power unit being fixedly arranged on the fixed support, the output shaft of the first rotary power unit being connected with the upper end of the first rotating shaft.

[0007] Preferably, two second rotating shafts are horizontally arranged along the radial direction of the outer side of the bottom of the drum shell, the two second rotating shafts being coaxially arranged, one end of the second rotating shaft being connected with the drum shell and the other end being rotatably connected with the fixed support, a third rotary power unit being arranged on the fixed support, the output shaft of the third rotary power unit being connected with one of the second rotating shafts, the first rotary power unit being located on one side of the drum shell, a bevel gear being fixedly sleeved on the output shaft of the first rotary power unit and the first rotating shaft away from the drum screen respectively, the drum shell being turned over towards the side close to the first rotary power unit, the two bevel gears being engaged with each other.

[0008] Preferably, a third rotating shaft is vertically fixedly arranged on the fixed support and located between the drum shell and the first rotary power unit, a double bevel gear being sleeved on the third rotating shaft and being rotatably connected therewith, the bevel gear on the output shaft of the first rotary power unit being engaged with the lower bevel gear of the double bevel gear, the drum shell being turned over towards the side close to the first rotary power unit, the bevel gear on the first rotating shaft being engaged with the upper bevel gear of the double bevel gear.

[0009] Preferably, the outer side of the drum shell is fixed with a plurality of annular slide rails at equal intervals along the axial direction thereof, the second rotating shaft is fixed with a support arm at the end away from the fixed support, the support arm is parallel to the center line of the drum shell, the support arm is fixed with a plurality of limiting blocks at the side close to the drum shell, the limiting blocks are connected with the annular slide rails and slide along the circumferential direction thereof.

[0010] Preferably, a plurality of heating strips are fixed on the drum screen at equal intervals around the vertical direction, and temperature sensors are respectively fixed on the drum screen.

[0011] Preferably, a material falling barrel is vertically arranged through the bottom of the drum shell and coaxial with the center line thereof, the material falling barrel is fixedly connected with the drum shell at the end away from the fixed support, a plurality of isolation pipes are arranged in the material falling barrel in layers and coaxial with the center line thereof, the isolation pipes correspond to the drum screen one by one and are located directly below the drum screen, and adjacent isolation pipes and the isolation pipes and the inner wall of the drum shell are fixedly connected through connecting rods.

[0012] Preferably, two circular baffles are arranged in the material falling barrel in layers and coaxial with the center line thereof, the two circular baffles are located between the drum screen and the isolation pipes, the two circular baffles are respectively abutted with the lower end of the drum screen and the upper end of the isolation pipe at the sides away from each other, one of the two circular baffles is fixedly connected with the inner wall of the material falling barrel, the other circular baffle is rotatably connected with the material falling barrel around the circumferential direction thereof, a plurality of through grooves are radially and equally arranged on the two circular baffles, the through grooves on the two circular baffles are arranged alternately, a second rotating power unit is arranged on the circular baffle fixedly connected with the material falling barrel, and the output shaft of the second rotating power unit is connected with the other circular baffle.

[0013] Preferably, a plurality of annular weighing grooves are arranged in the material falling barrel in layers and along the radial direction thereof, the annular weighing grooves are arranged one by one between adjacent isolation pipes, the inner side edges of the annular weighing grooves are aligned with the inner wall and the outer wall of the adjacent isolation pipes, annular gravity sensors are arranged at the inner bottom of the annular weighing grooves, adjacent annular weighing grooves are fixedly connected with each other to form a weighing disc, the weighing disc is detachably fixedly connected with the material falling barrel at the end close to the fixed support, a recovery barrel is vertically arranged on the fixed support and located directly below the material falling barrel.

[0014] An operation method of an intelligent device for rapid detection of performance parameters of sand and gravel aggregates, comprising the following steps: Check the running state of the first rotating power unit, the second rotating power unit and the third rotating power unit to ensure that the device is in working condition; Set detection parameters according to the detection requirements of sand and gravel aggregates, including aggregate type, stirring time, stirring speed, heating temperature, start the second rotating power unit to drive the circular baffle to rotate so that the through grooves are closed; The sand and stone aggregate sample to be tested is added to the roller shell, the third rotating power unit is started to drive the second rotating shaft to rotate, the first rotating shaft is connected with the first rotating power unit, the first rotating power unit is started to drive the first rotating shaft to rotate to start screening; After the screening is completed, the first rotating power unit is turned off, the third rotating power unit is started to drive the second rotating shaft to rotate, so that the roller shell is rotated to a vertical state, the second rotating power unit is started to drive the circular partition plate to rotate, so that the screened and graded sand and stone aggregate passes through the through slot into the material falling barrel, the annular gravity sensor in the annular weighing groove automatically weighs the weight of the aggregate of different particle sizes, and the screening result is calculated; After the screening is completed, the weighing disc is separated from the material falling barrel, and all the sand and stone aggregate falls into the recycling barrel; The power supply is turned off to complete detection.

[0015] Compared with the prior art, the intelligent device and method for quickly detecting performance parameters of sand and stone aggregate provided by the application are used in cooperation with the roller shell, the multi-layer roller screen and the driving mechanism of the fixed support and the screening assembly. Since the multi-layer roller screen is respectively and individually connected with the roller shell, the multi-layer roller screen can be quickly disassembled and replaced, which is convenient for adapting to the screening requirements of different particle size specifications. The driving mechanism drives the multi-layer roller screen to rotate, the hole diameter of the multi-layer roller screen gradually decreases from the inside to the outside along the radial direction of the roller shell, so that the sand and stone aggregate continuously passes through the multi-layer roller screens with different hole diameters to realize screening and grading. Since the rotation of the roller screen belongs to low-frequency tumbling, the secondary crushing of the aggregate caused by high-frequency impact is avoided. The screening and grading of the sand and stone aggregate are performed in the interior of the roller shell, so that dust is not easy to escape during the screening process, thereby improving the accuracy and convenience of the screening and grading of the sand and stone aggregate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the detection device of the application; Figure 2 is a perspective view of the roller shell of the application; Figure 3 is a perspective view of the double-row gear and the idler gear of the application; Figure 4 is a top view of the circular partition plate of the application; Figure 5 is a perspective view of the material falling barrel of the application; Figure 6 is a partial sectional view of A in the application Figure 5 Figure 7 is a flowchart of the operation method of the application. DETAILED DESCRIPTION

[0017] The application provides an intelligent device and method for quickly detecting performance parameters of sand and stone aggregate, which are described below​Figures 1 to 7 The structure diagram of the present application is shown in the following figure.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the technical solutions of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0019] Referring to Figure 1 Figure 2 Figure 1 is a perspective view of the detection equipment of the present embodiment, Figure 2 is a perspective view of the drum shell of the present embodiment, an intelligent equipment for rapid detection of performance parameters of sand and gravel aggregates, comprising a fixed support 1 and a screening assembly arranged on the fixed support 1, the screening assembly comprising a drum shell 206 vertically arranged on the fixed support 1, the drum shell 206 being connected with the fixed support 1, a plurality of drum screens 205 being arranged in the drum shell 206 layer by layer and coaxial with the center line of the drum shell 206 respectively, the adjacent drum screens 205 having equal spacing to form a plurality of annular screening channels, the drum screens 205 being rotatably connected with the drum shell 206 around the circumferential direction thereof respectively, the aperture of the drum screen 205 gradually decreasing from inside to outside along the radial direction of the drum shell 206, a driving mechanism being arranged on the fixed support 1, the output end of the driving mechanism being connected with the drum screens 205 respectively, for driving the drum screens 205 to rotate, so that the sand and gravel aggregates continuously pass through the plurality of drum screens 205 for screening and grading.

[0020] In the present embodiment, the intelligent equipment for rapid detection of performance parameters of sand and gravel aggregates, the screen is arranged in a cylindrical shape, and a plurality of drum screens 205 are arranged in the drum shell 206 layer by layer, when it is necessary to adapt to the screening requirements of different particle size specifications, any drum screen 205 can be disassembled and replaced, the aperture of the drum screen 205 gradually decreases from inside to outside along the radial direction of the drum shell 206, the plurality of drum screens 205 are driven to rotate around the center line of the drum shell 206 respectively, so that the aggregate particles are rapidly screened and graded at one time through the plurality of drum screens 205, the rotary screening of the drum screen 205 belongs to low-frequency tumbling, which avoids the secondary crushing of the aggregate caused by high-frequency impact, and the screening and grading process of the sand and gravel aggregate is in the interior of the drum shell, which avoids dust escaping by using the drum shell, greatly improving the accuracy and convenience of the screening and grading of the sand and gravel aggregate.

[0021] ​​Specifically, the interval between adjacent cylinder screens 205 in the embodiment is 5-40 mm, which is adjusted according to the size of the screen hole, and the interval between the screens is to make the screening more sufficient. The cylinder screen 205 has 13 layers, which is composed of a plurality of screens with different hole diameters and meets the national standard requirements, and the size of the screen hole from inside to outside is 31.5 mm, 26.5 mm, 19 mm, 16 mm, 13.2 mm, 9.5 mm, 4.75 mm, 2.36 mm, 1.18 mm, 0.60 mm, 0.30 mm, 0.15 mm, and 0.075 mm. The shape of the screen hole is a square, and the screen hole distribution is the same as the standard screen. The cylinder screen 205 can be made of high-temperature resistant alloy materials, such as 310S stainless steel or Inconel alloy, which can withstand high-temperature working conditions for a long time.

[0022] Specifically, the top of the specific cylinder shell 206 is vertically provided with a feeding port 204, which is located on one side close to the center line of the cylinder shell 206, and a valve is arranged on the feeding port 204 to prevent the aggregate and dust from escaping from the feeding port 204 during screening and grading.

[0023] Referring to Figure 3 , Figure 3 is a perspective view of the double-row gear and the idler gear of the embodiment. As a further optimization scheme, the embodiment provides a specific composition of a driving mechanism, which includes a first rotating shaft 202, a main gear 214, a plurality of double-row gears 201, a plurality of idler gears 215, and a first rotating power unit 301. The first rotating shaft 202 is arranged in the cylinder shell 206 and coaxial with the center line thereof. One end of the first rotating shaft 202 extends from the top of the cylinder shell 206 and is rotationally connected thereto. The main gear 214 is fixedly sleeved on the other end of the first rotating shaft 202. The double-row gears 201 are correspondingly fixed on the top of the cylinder screen 205 and coaxial with the center line thereof, respectively. The idler gears 215 are arranged between the main gear 214 and the double-row gears 201 and the adjacent double-row gears 201, respectively, and are engaged with the main gear 214 and the double-row gears 201, respectively. One end of the idler gear 215 is rotationally connected to the inner top of the cylinder shell 206. The first rotating power unit 301 is fixedly arranged on the fixed support 1, and the output shaft thereof is connected to the upper end of the first rotating shaft 202.

[0024] In the embodiment, the first rotating power unit 301 drives the first rotating shaft 202 to rotate. The first rotating shaft 202 realizes continuous transmission through the idler gears 215 and the double-row gears 201, so that the multiple layers of cylinder screens 205 rotate around the center line of the cylinder shell 206, and the rotation directions of the adjacent cylinder screens 205 are opposite, further improving the accuracy of screening and grading of the sand aggregate.

[0025] Specifically, the double row gear 201 in the embodiment is fixedly connected with the top of the drum screen 205, for example, fixedly connected by means of screws, and can also be fixedly connected by means of welding or key connection, so as to ensure transmission accuracy and facilitate replacement. The top of the drum shell 206 is provided with an annular track corresponding to each double row gear 201. The double row gear 201 is rotatably connected with the drum shell 206 and the drum screen 205 by means of the annular track, and the axial displacement of the double row gear 201 and the drum screen 205 along the drum shell 206 is limited. The annular track is detachably fixedly connected with the drum shell 206 by means of a threaded connecting piece. The top of the drum shell 206 is provided with a gear mounting seat or a fixed lug corresponding to each idler gear 215. The idler gear 215 is rotatably connected with the gear mounting seat or the fixed lug. The gear mounting seat or the fixed lug is detachably fixedly connected with the drum shell 206 by means of a threaded connecting piece, so that the transmission between the double row gear 201 and the idler gear 215 is stable.

[0026] As a further optimization scheme, the bottom outer side of the drum shell 206 is provided with two second rotating shafts 208 along the radial direction thereof in the embodiment. The two second rotating shafts 208 are coaxially arranged. One end of the second rotating shaft 208 is connected with the drum shell 206, and the other end is rotatably connected with the fixed support 1. The fixed support 1 is provided with a third rotating power unit. The output shaft of the third rotating power unit is connected with one of the second rotating shafts 208. The first rotating power unit 301 is located on one side of the drum shell 206. The output shaft of the first rotating power unit 301 and the end of the first rotating shaft 202 away from the drum screen 205 are respectively sleeved with bevel gears 303. The drum shell 206 is turned over to the side close to the first rotating power unit 301. The two bevel gears 303 are meshed with each other.

[0027] In the embodiment, the two second rotating shafts 208 rotatably connect the drum shell 206 with the fixed support 1. When screening and grading, the drum shell 206 is turned over to one side, so that the drum screen 205 and the drum shell 206 are in an inclined or nearly horizontal state. When the drum screen 205 rotates at a low frequency, the sand and gravel aggregate is continuously tumbled under the action of gravity and the rotation of the drum screen, so that the sand and gravel aggregate flows more uniformly, avoids local blockage of the screen, improves the screening efficiency, and at the same time, the sand and gravel aggregate can converge to one end along the axial direction of the drum screen 205 after being screened into the corresponding annular screening channel.

[0028] Specifically, in the embodiment, the first rotating power unit 301 is installed on the fixed support 1 and located on one side of the drum shell 206. After the drum shell 206 is turned over to the side close to the first rotating power unit 301, the output shaft of the first rotating power unit 301 drives the first rotating shaft 202 to rotate by means of the bevel gears 303. The first rotating shaft 202 rotates by means of the main gear 214, the idler gear 215 and the double row gear 201.

[0029] Specifically, the first rotating power unit 301 is a servo motor, which can control the rotation of the bevel gear 302, and further control the rotation speed and direction of the first rotating shaft 202. Generally, the first rotating shaft 202 is controlled to rotate clockwise during screening, and the rotation speed is 50-70 r / min. When the screening is completed, the speed is gradually reduced to 0 r / min. In this way, the screened aggregate can not enter the upper drum screen and affect the screening result.

[0030] Specifically, the fixed support 1 is further provided with a third rotating power unit, and the output shaft of the third rotating power unit is connected with the second rotating shaft to drive the second rotating shaft to rotate.

[0031] As a further optimization scheme, the third rotating shaft 302 is vertically arranged on the fixed support 1 and located between the drum shell 206 and the first rotating power unit 301. The double bevel gear 304 is arranged on the third rotating shaft 302 and connected with the third rotating shaft 302. The bevel gear 303 on the output shaft of the first rotating power unit 301 is engaged with the lower bevel gear of the double bevel gear 304. The drum shell 206 is flipped to the side close to the first rotating power unit 301, and the bevel gear 303 on the first rotating shaft 202 is engaged with the upper bevel gear of the double bevel gear 304.

[0032] In the embodiment, the third rotating shaft 302 and the double bevel gear 304 are used in cooperation, so that the bevel gear 303 on the output shaft of the first rotating power unit 301 is always engaged with the lower bevel gear of the double bevel gear 304. After the drum shell 206 is flipped to the side close to the first rotating power unit 301, the bevel gear 303 on the first rotating shaft 202 is engaged with the upper bevel gear of the double bevel gear 304. The fixed support 1 can also be provided with a limiting piece, so that the drum shell 206 remains stable after being flipped, and the upper bevel gear of the double bevel gear 304 does not drive the bevel gear 303 on the first rotating shaft 202 to transmit power, which causes the whole drum shell 206 to shake to both sides.

[0033] As a further optimization scheme, a plurality of annular slide rails 207 are arranged on the outer side of the drum shell 206 at equal intervals along the axial direction. The second rotating shaft 208 is provided with a support arm 216 at the end away from the fixed support 1. The support arm 216 is parallel to the center line of the drum shell 206. A plurality of limiting blocks are arranged on the side of the support arm 216 close to the drum shell 206. The limiting blocks are connected with the annular slide rails 207 and slide along the circumferential direction.

[0034] In the embodiment, the annular slide rails 207 on the outer side of the drum shell 206 are used in cooperation with the support arm 216, so that the drum shell 206 can rotate around the center line. When the drum shell 206 is in a vertical state, the rotation of the drum shell 206 is driven to facilitate the introduction of the sand and stone aggregate from the inlet 204. After the sand and stone aggregate is introduced, the sand and stone aggregate is uniformly distributed in the innermost annular screening channel.

[0035] Specifically, when the drum shell 206 is flipped to the side close to the first rotating power unit 301, the limiting piece on the fixed support 1 clamps the drum shell 206, avoiding the rotation of the drum shell 206. Specifically, the limiting piece can be a positioning column, and the outer side of the drum shell 206 is provided with a positioning hole. The drum shell 206 is flipped to the side close to the first rotating power unit 301, so that the positioning column is inserted into the positioning hole to achieve limiting.

[0036] In the prior art, sand and gravel aggregates are screened and graded, and after the sand and gravel aggregates of different particle sizes are weighed, the water content of the sand and gravel aggregates is measured, which increases the detection period and labor cost of batch detection.

[0037] As a further optimization scheme, a plurality of heating strips 213 are fixedly arranged on the drum screen 205 at equal intervals around the vertical direction, and the drum screen 205 is respectively fixedly provided with a temperature sensor.

[0038] In the embodiment, the heating strips 213 are used to quickly dry the water on the surface of the aggregate, the temperature sensor is arranged on the screen mesh interval of the drum screen 205, the heating strips 213 are electrically connected with the temperature control system, and the temperature control system adjusts the heating strips 213 of different screen layers or screen sections according to the monitored temperature information, so as to ensure the drying effect.

[0039] Specifically, the heating strip in the embodiment is any one of a flexible electric heating rod, a resistance heating wire or a ceramic heating element. The heating strip 213 can be a flexible electric heating rod, a resistance heating wire or a ceramic heating sheet, and is fixed in a non-screen hole area of the drum screen 205, such as a framework, a frame edge, a support ring and the like of the drum screen 205, so as to avoid that the heating strip blocks the screen holes of the drum screen. A protective layer is arranged on the outer surface of the heating strip, and the protective layer is a high-temperature-resistant ceramic coating or a heat-resistant alloy cladding layer, which is used to prevent the aggregate from impacting and thermal corrosion.

[0040] Specifically, one heating strip 213 is arranged on the drum screen 205 every 100 mm, which can heat the aggregate passing through the drum screen 205 synchronously while the screening assembly is rotating and stirring, so as to accelerate the volatilization of the water on the surface of the aggregate.

[0041] The intelligent device for quickly detecting performance parameters of sand and gravel aggregates in the embodiment realizes local precise heating of the screen surface without affecting the screening performance of the drum screen 205, and realizes the synchronous dehydration and screening of the aggregate in motion in combination with the rotating action of the drum, which greatly improves the efficiency and accuracy of the sand and gravel aggregate grading detection.

[0042] The existing screening equipment needs to be additionally provided with a collection container, and the aggregate of different particle sizes needs to be manually transferred and collected after screening, which is easy to cause the mixing of aggregates of different particle sizes.

[0043] Referring to Figure 5 , Figure 5 It is a perspective view of the falling barrel of the embodiment, as a further optimization scheme, the bottom of the drum shell 206 is vertically provided with the falling barrel 210 which is coaxial with the center line thereof, the end of the falling barrel 210 away from the fixed support 1 is fixedly connected with the drum shell 206, a plurality of isolation pipes 217 are arranged in the falling barrel 210 layer by layer and coaxial with the center line thereof, the isolation pipes 217 correspond to the drum screens 205 one by one and are located directly below the drum screens 205, adjacent isolation pipes 217 and the inner wall of the drum shell 206 are fixedly connected through connecting rods.

[0044] In the embodiment, the falling barrel 210 is arranged at the bottom of the drum shell 206, and the isolation pipes 217 in the falling barrel 210 are arranged one by one corresponding to the drum screens 205, so that the sand and gravel aggregates of each particle size after screening and grading fall into the corresponding two isolation pipes 217, realizing the collection of the sand and gravel aggregates after screening and grading, and keeping the particle size separation of the aggregates after screening to avoid the re-mixing affecting the screening accuracy.

[0045] Specifically, in the embodiment, the number of the isolation pipes 217 is the same as that of the drum screens 205, the interval between adjacent isolation pipes 217 is the same as that between adjacent drum screens 205, so that the isolation pipes 217 strictly correspond to the drum screens 205, a plurality of connecting rods are arranged around the isolation pipes 217 and the inner wall of the falling barrel 210 respectively, the connecting rods are used to stably connect the isolation pipes 217 and the falling barrel 210, and the upper end of the falling barrel 210 and the lower end of the drum shell 206 are correspondingly provided with threads, and the two are detachably fixedly connected through the threads.

[0046] Referring to Figure 4 , Figure 4 It is a top view of the circular partition plate, as a further optimization scheme, in the embodiment, two circular partition plates 209 are arranged inside the falling barrel 210 layer by layer and coaxial with the center line thereof, the two circular partition plates 209 are located between the drum screens 205 and the isolation pipes 217, the sides of the two circular partition plates 209 away from each other are respectively abutted with the lower end of the drum screen 205 and the upper end of the isolation pipe 217, one of the circular partition plates 209 is fixedly connected with the inner wall of the falling barrel 210, and the other circular partition plate 209 is rotatably connected with the falling barrel 210 around the circumference thereof, a plurality of through grooves are radially and equidistantly arranged on the two circular partition plates 209, the through grooves on the two circular partition plates 209 are arranged alternately, the circular partition plate 209 fixedly connected with the falling barrel 210 is provided with a second rotary power unit, and the output shaft of the second rotary power unit is connected with the other circular partition plate 209.

[0047] The center lines of the two upper and lower circular baffles 209 are coaxial. During the screening and grading of the sand and stone aggregates by the multi-layer drum screen 205 inside the drum shell 206, the through grooves on the two circular baffles 209 are in a staggered state, and the sand and stone aggregates cannot pass through the through grooves and can only stay in the annular screening channel. The two circular baffles 209 block the sand and stone aggregates from falling. After the screening and grading of the sand and stone aggregates by the drum screen 205 is completed, the drum shell 206 is turned to the vertical state, and one of the circular baffles 209 is rotated by the second rotating power unit. The through grooves on the two circular baffles 209 are aligned and mutually penetrated to form a discharging channel. The sand and stone aggregates screened and graded fall into the corresponding two isolation pipes 217 through the discharging channel, so that the sand and stone aggregates are all in the drum shell 206 before the screening and grading is completed, and the accuracy of the screening and grading of the sand and stone aggregates is further improved.

[0048] Specifically, in the embodiment, the two circular baffles are stacked and arranged horizontally and abut against each other. The inner wall of the discharging barrel 210 is provided with an annular sliding groove. One of the circular baffles 209 is embedded in the annular sliding groove and rotationally connected with the discharging barrel 210. The second rotating power unit drives one of the circular baffles 209 to rotate about 30°, so that the through grooves on the two circular baffles 209 are aligned and mutually penetrated to form a discharging channel. The through grooves on the circular baffles 209 are fan-shapedly distributed.

[0049] Specifically, the second rotating power unit includes a motor. A limiting structure can be arranged on the inner wall of the discharging barrel 210. The rotation stroke of the circular baffles 209 is controlled by the limiting structure. The second rotating power unit drives one of the circular baffles 209 to rotate to a corresponding position or stop. The opening and closing positions are accurate. The stable closing and penetration of the through grooves on the two circular baffles 209 are realized.

[0050] The existing screening equipment needs to be manually transferred and weighed after screening. Not only is it time-consuming and labor-intensive, but it is also difficult to monitor the quality distribution of the aggregates at all levels in real time, and it cannot provide real-time data support for production.

[0051] Referring to Figure 6 , Figure 6 Figure 2 is a partial cross-sectional view of the discharging barrel A of the embodiment. As a further optimization scheme, the bottom of the discharging barrel 210 is provided with a plurality of annular weighing grooves 211 which are arranged layer by layer along the radial direction. The plurality of annular weighing grooves 211 are arranged one by one between adjacent isolation pipes 217. The inner side edge of the mouth of the annular weighing groove 211 is aligned with the inner wall and the outer wall of the adjacent isolation pipe 217. The inner side bottom of the annular weighing groove 211 is provided with an annular gravity sensor 218. Adjacent annular weighing grooves 211 are fixedly connected to each other to form a weighing disc. The weighing disc is detachably fixedly connected to one end of the discharging barrel 210 close to the fixed support 1. A recovery barrel 106 is vertically arranged on the fixed support 1 and located directly below the discharging barrel 210.

[0052] The weighing disc in the embodiment is composed of a plurality of annular weighing grooves 211 and annular gravity sensors 218 arranged at the inner bottom of the annular weighing grooves 211. Each annular weighing groove 211 corresponds to the outlet area of the adjacent isolation pipe 217 in the material falling barrel 210, so as to respectively measure the mass of the aggregate of each particle size grade. A sealing washer is arranged between the outermost annular weighing groove 211 and the bottom edge of the material falling barrel 210 to prevent material leakage. The weighing disc can be detachably connected with the bottom of the material falling barrel 210 through a flange and a bolt fastener. When disassembled, the weighing disc can be removed by only loosening the bolt, so that the sand and stone aggregate on the material falling barrel 210 and the annular weighing groove 211 can be cleaned out or the weighing device can be replaced.

[0053] Specifically, the isolation pipe 217 in the material falling barrel 210 is the same as the drum screen 205, and the size and spacing thereof and the annular gravity sensor 218 can be adjusted as required, but the consistency with the drum screen 205 needs to be ensured to avoid missing of the screened aggregate and affect the screening result.

[0054] According to the detection of different types of aggregate, the weight of the aggregate corresponding to different screen layers can be combined, counted and reviewed to realize the classification, weighing and analysis of aggregate in different particle size ranges. Specifically, the detection template can be preset or configured by the user, and the total mass and proportion of the aggregate in each combined particle size range can be automatically output after the screening is completed.

[0055] In the embodiment, the recycling barrel 106 is arranged directly below the material falling barrel 210 to collect the sand and stone aggregate after weighing. Specifically, after the weighing disc and the material falling barrel 210 are disassembled, the sand and stone aggregate in the material falling barrel 210 automatically falls into the recycling barrel 106 due to gravity, and the sand and stone aggregate on the annular weighing groove 211 of the weighing disc is directly poured into the recycling barrel 106 to realize the recycling of the waste after the screening is completed.

[0056] In addition, a recycling hopper can also be arranged on the fixed support 1. The recycling hopper is located between the recycling barrel 106 and the material falling barrel 210, the inner diameter of the recycling hopper gradually decreases from top to bottom, the lower end of the recycling hopper is directly communicated with the recycling barrel 106, and a valve is arranged on the side of the recycling hopper close to the recycling barrel 106 to prevent dust raising.

[0057] Specifically, the fixed support 1 comprises a lower fixed base 101, an upper support 102, a plurality of columns 103, and two drum fixed support plates 104, the upper support 102 is horizontally arranged above the lower fixed base 101, the plurality of columns 103 are vertically fixed between the lower fixed base 101 and the upper support 102, the two drum fixed support plates 104 are vertically fixed at the top of the upper support 102 and located on both sides of the drum shell 206, the second rotating shaft 208 is rotationally connected with the drum fixed support plate 104 away from the one end of the support arm 216, and the recovery barrel 106 is vertically arranged on the lower fixed base 101, and the recovery hopper is arranged on the upper support 102.

[0058] The intelligent device for quickly detecting performance parameters of sand and gravel aggregates in the above embodiment further comprises a control unit composed of a control system 401 and a control button 402, the control system 401 is provided with program control software, and the program control software can realize full-automatic control of the screening process and gradation calculation after the screening is completed, and the control button 402 can control the start and stop of each rotating power unit of the device.

[0059] Specifically, the program control software is started, and only the detection program needs to be set, and then the automation of the entire screening process and the automatic calculation of the screening result can be realized.

[0060] The intelligent device for quickly detecting performance parameters of sand and gravel aggregates can automatically, quickly and intelligently screen, dry, weigh, calculate and analyze sand and gravel aggregates, can realize the rapid screening and water content detection of sand and gravel aggregates, the automatic classification and collection of aggregates and the real-time quality monitoring, and can recycle sand and gravel aggregates, so that the higher requirements of modern building material industry on screening precision, automation and environmental protection performance are met, and the device has the advantages of simple structure, high screening efficiency and high intelligent degree, and is suitable for efficient screening and quality analysis of various building aggregates.

[0061] Referring to Figure 7 , Figure 7 The flowchart of the operation method of the embodiment is an operation method of an intelligent device for quickly detecting performance parameters of sand and gravel aggregates, and comprises the following steps: Check the running states of the first rotating power unit 301, the second rotating power unit and the third rotating power unit, ensure that the device is in a working state, and turn on the power supply to start the control unit; According to the detection requirements of sand and gravel aggregates, set detection parameters including aggregate types, stirring time, stirring speed, heating temperature, start the second rotating power unit to drive the circular partition plate 209 to rotate to close the through slot; The sand and gravel aggregate sample to be tested is added into the drum shell 206 through the feeding port 204, and the valve on the feeding port 204 is closed, the third rotating power unit is started to drive the second rotating shaft 208 to rotate, the first rotating shaft 202 is connected with the first rotating power unit 301, the first rotating power unit 301 is started to drive the first rotating shaft 202 to rotate to start the screening by the computer program control software; After the screening is completed, the first rotating power unit 301 is closed, the third rotating power unit is started to drive the second rotating shaft 208 to rotate, the drum shell 206 is rotated to the vertical state, the second rotating power unit is started to drive the circular partition plate 209 to rotate, the screened and graded sand and gravel aggregate passes through the through slot to enter the material falling barrel 210, the annular gravity sensor 218 in the annular weighing groove 211 automatically weighs the weight of the aggregate of different particle sizes, and the screening result is calculated; S5: After the screening is completed, the weighing disc is separated from the material falling barrel 210, and all the sand and gravel aggregate falls into the recycling barrel 106; S6: The power supply is closed to complete the detection.

[0062] The above disclosure is only the preferred specific embodiment of the present application, but the embodiments of the present application are not limited thereto, and any changes that can be thought of by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. An intelligent device for rapid detection of performance parameters of sand and gravel aggregates, characterized in that, The application relates to a sand and gravel screening device. The sand and gravel screening device comprises a fixed support (1) and a screening assembly arranged on the fixed support (1), wherein the screening assembly comprises: a drum shell (206) vertically arranged on the fixed support (1), wherein the drum shell (206) is connected with the fixed support (1); a plurality of drum screens (205) arranged layer by layer in the drum shell (206) and coaxial with the center line of the drum shell (206), respectively, wherein the spacing between adjacent drum screens (205) is equal to form a plurality of annular screening channels, the drum screens (205) are rotationally connected with the drum shell (206) around the circumferences thereof, respectively, and the hole diameters of the drum screens (205) gradually decrease along the radial direction of the drum shell (206) from the inside to the outside; a driving mechanism arranged on the fixed support (1), wherein the output ends of the driving mechanism are connected with the drum screens (205), respectively, for driving the drum screens (205) to rotate so that sand and gravel are continuously screened and classified by the plurality of drum screens (205). 2.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 1, characterized in that, The driving mechanism comprises a first rotating shaft (202), a main gear (214), a plurality of double-row gears (201), a plurality of idle gears (215) and a first rotating power unit (301), wherein the first rotating shaft (202) is arranged in the drum shell (206) and coaxial with the center line of the drum shell (206), one end of the first rotating shaft (202) extends out of the top of the drum shell (206) and is rotationally connected with the drum shell (206), the main gear (214) is fixedly sleeved on the other end of the first rotating shaft (202), the double-row gears (201) are fixedly arranged on the top of the drum screens (205) one by one and coaxial with the center lines of the drum screens (205), respectively, the idle gears (215) are arranged between the main gear (214) and the double-row gears (201) and adjacent double-row gears (201), respectively, and are engaged with the main gear (214) and the double-row gears (201), respectively, one end of the idle gear (215) is rotationally connected with the inner top of the drum shell (206), and the output shaft of the first rotating power unit (301) is connected with the upper end of the first rotating shaft (202). 3.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 2, characterized in that, The outer side of the bottom of the drum shell (206) is horizontally provided with two second rotating shafts (208) along the radial direction thereof, the two second rotating shafts (208) are coaxially arranged, one end of the second rotating shaft (208) is connected with the drum shell (206), the other end is rotationally connected with the fixed support (1), a third rotating power unit is arranged on the fixed support (1), the output shaft of the third rotating power unit is connected with one of the second rotating shafts (208), the first rotating power unit (301) is located on one side of the drum shell (206), a bevel gear (303) is fixedly sleeved on the output shaft of the first rotating power unit (301) and the end of the first rotating shaft (202) away from the drum screen (205), respectively, the drum shell (206) is turned to the side close to the first rotating power unit (301), and the two bevel gears (303) are engaged with each other. 4.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 3, characterized in that, The third rotating shaft (302) is vertically arranged on the fixed support (1) and located between the drum shell (206) and the first rotating power unit (301), the double bevel gear (304) is sleeved on the third rotating shaft (302) and connected with the third rotating shaft (302) in rotation, the bevel gear (303) on the output shaft of the first rotating power unit (301) is engaged with the lower bevel gear of the double bevel gear (304), the drum shell (206) is turned to the side close to the first rotating power unit (301), and the bevel gear (303) on the first rotating shaft (202) is engaged with the upper bevel gear of the double bevel gear (304). 5.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 3, characterized in that, A plurality of annular slide rails (207) are arranged on the outer side of the drum shell (206) at equal intervals along the axial direction, the second rotating shaft (208) is fixedly connected with the support arm (216) at the end away from the fixed support (1), the support arm (216) is parallel to the center line of the drum shell (206), a plurality of limiting blocks are arranged on the side of the support arm (216) close to the drum shell (206), and the limiting blocks are connected with the annular slide rails (207) and slide along the circumferential direction. 6.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 3, characterized in that, A plurality of heating strips (213) are vertically arranged on the drum screen (205) at equal intervals, and the drum screen (205) is fixedly connected with temperature sensors. 7.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 3, characterized in that, The bottom of the drum shell (206) is vertically penetrated by the blanking barrel (210) and coaxial with the center line of the blanking barrel (210), the blanking barrel (210) is fixedly connected with the drum shell (206) at the end away from the fixed support (1), a plurality of isolation pipes (217) are arranged in the blanking barrel (210) in layers and coaxial with the center line of the blanking barrel (210), the isolation pipes (217) correspond to the drum screen (205) one by one and are located directly below the drum screen (205), and adjacent isolation pipes (217) and the isolation pipes (217) and the inner wall of the drum shell (206) are fixedly connected through connecting rods. 8.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 7, characterized in that, Two circular baffles (209) are arranged in the blanking barrel (210) in layers and coaxial with the center line of the blanking barrel (210), the two circular baffles (209) are located between the drum screen (205) and the isolation pipes (217), the lower end of the drum screen (205) and the upper end of the isolation pipes (217) are respectively located on the sides away from each other of the two circular baffles (209), one of the circular baffles (209) is fixedly connected with the inner wall of the blanking barrel (210), the other circular baffle (209) is rotatably connected with the blanking barrel (210) around the circumferential direction, a plurality of through grooves are radially and equally arranged on the two circular baffles (209), the through grooves on the two circular baffles (209) are arranged in a staggered manner, a second rotating power unit is arranged on the circular baffle (209) fixedly connected with the blanking barrel (210), and the output shaft of the second rotating power unit is connected with the other circular baffle (209). 9.The intelligent device for rapid detection of performance parameters of sand and gravel aggregates according to claim 7, characterized in that, The bottom of the blanking barrel (210) is provided with a plurality of annular weighing grooves (211) arranged layer by layer along the radial direction, and the annular weighing grooves (211) are arranged one by one between adjacent isolation tubes (217). The inner side edge of the mouth of the annular weighing groove (211) is aligned with the inner wall and the outer wall of the adjacent isolation tube (217), the inner side bottom of the annular weighing groove (211) is provided with an annular gravity sensor (218), and the adjacent annular weighing grooves (211) are fixedly connected with each other to form a weighing disc. The weighing disc is detachably fixedly connected with the end of the blanking barrel (210) close to the fixed support (1). A recycling barrel (106) is vertically arranged on the fixed support (1) and located directly below the blanking barrel (210).

10. The operating method of claim 9, wherein the method further comprises: The method comprises the following steps: Check the running state of the first rotary power unit (301), the second rotary power unit and the third rotary power unit to ensure that the equipment is in working condition; Set the detection parameters according to the detection requirements of the sand and gravel aggregate, including the type of aggregate, stirring time, stirring speed, heating temperature, start the second rotary power unit to drive the circular partition (209) to rotate to close the through groove; Put the sand and gravel aggregate sample to be tested into the roller shell (206), start the third rotary power unit to drive the second rotating shaft (208) to rotate, so that the first rotating shaft (202) is connected with the first rotary power unit (301), start the first rotary power unit (301) to drive the first rotating shaft (202) to rotate to start screening; After the screening is finished, the first rotary power unit (301) is closed, the third rotary power unit is started to drive the second rotating shaft (208) to rotate, so that the roller shell (206) is rotated to the vertical state, the second rotary power unit is started to drive the circular partition (209) to rotate, so that the screened and graded sand and gravel aggregate enters the blanking barrel (210) through the through groove, the annular gravity sensor (218) in the annular weighing groove (211) automatically weighs the weight of the aggregate of different particle sizes, and the screening result is calculated; S5: After the screening is finished, the weighing disc and the blanking barrel (210) are detached and separated, and all the sand and gravel aggregate falls into the recycling barrel (106); S6: Turn off the power supply and end the detection.

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