CN117943271A - Automatic screening and selecting device for concrete production - Google Patents
Automatic screening and selecting device for concrete production Download PDFInfo
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- CN117943271A CN117943271A CN202410318221.7A CN202410318221A CN117943271A CN 117943271 A CN117943271 A CN 117943271A CN 202410318221 A CN202410318221 A CN 202410318221A CN 117943271 A CN117943271 A CN 117943271A
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- 238000012216 screening Methods 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000007664 blowing Methods 0.000 claims description 49
- 239000012528 membrane Substances 0.000 claims description 39
- 239000012188 paraffin wax Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The application discloses an automatic screening and selecting device for concrete production, which relates to the technical field of screening and comprises supporting legs, an external fixed table and an internal rotating table; an annular inner collecting groove is fixed on one side of the plurality of supporting legs close to the central shaft of the outer fixing table; the inner rotary table is connected above the inner collecting tank in a sliding way; a plurality of supporting rods are fixed on one side of the inner collecting tank, which is close to the central shaft of the outer fixing table, and one ends of the plurality of supporting rods, which are far away from the inner collecting tank, are fixedly connected with a driving motor; the outer diameter of the inner rotary table is smaller than the inner diameter of the outer fixed table; the top surface of the inner rotary table is provided with a plurality of annular bulges, the circle centers of the annular bulges are the same as the circle center of the top surface circle of the inner rotary table, and the radii of the annular bulges are sequentially increased and distributed on the inner rotary table from inside to outside; the method can realize the technical effects that when the aggregates with a large number are screened, the possibility that part of the needle-shaped flaky aggregates and aggregates with other shapes are piled together is small, and the probability that the needle-shaped flaky aggregates smoothly fall from gaps is improved.
Description
Technical Field
The invention relates to the technical field of screening, in particular to an automatic screening and selecting device for concrete production.
Background
The pin-shaped aggregate is a particle in which the ratio of the dimension in the direction of the minimum thickness (or diameter) to the dimension in the direction of the maximum length (or width) of the aggregate particle is less than 0.4. The content of the needle-shaped aggregate is used as an important index for evaluating the quality and the quality of the aggregate, and influences the performance of the concrete, and the needle-shaped aggregate can influence the fluidity of the concrete and simultaneously influence the combination of stones, sand, cementing materials and the like. In order to detect the content of the aggregate needle-shaped flaky aggregate, the needle-shaped flaky aggregate needs to be screened out for evaluating whether the quality of the aggregate meets the quality requirement.
The Chinese patent publication No. CN113798190B discloses a needle-shaped aggregate screening device for ultra-high pumping concrete, which comprises a bracket, an outer fixing table fixed on the bracket, an inner rotating table arranged on the bracket, and a bone hopper fixed above the inner rotating table; a gap for the needle-shaped aggregate to pass through is reserved between the outer fixing table and the inner rotating table; the inner rotary table is provided with a poking bar, and the poking bar is positioned between the outer fixed table and a gap on the upper surface of the inner rotary table; the inner rotating table is provided with a rotating shaft fixed on the bracket, and the rotating shaft is provided with a driving part; the device can sieve out needle slice aggregate fast, compares and promotes by a wide margin on manual screening efficiency, dials the strip that is equipped with simultaneously on interior revolving stage, can prevent that the aggregate card from between external fixation platform and interior revolving stage, not only can guarantee the continuity of screening process, can also guarantee the screening effect of whole device.
However, when the device is used for sieving aggregates with a large number of aggregates, the aggregates with the other shapes can not smoothly fall from the gaps after being piled together, but can enter an outer collecting tank for collecting the aggregates with the other shapes along with the aggregates.
Disclosure of Invention
The application provides an automatic screening and selecting device for concrete production, which solves the technical problems that partial needle-shaped flaky aggregate and other shape aggregate can not smoothly fall from a gap after being piled together and enter an outer collecting tank for collecting the other shape aggregate along with the other aggregate when more aggregates are screened in the prior art; the technical effect that when the aggregates with more numbers are screened, the possibility that part of the needle-shaped flaky aggregates and aggregates with other shapes are piled together is small, and the probability that the needle-shaped flaky aggregates smoothly fall from gaps is improved is achieved.
The application provides an automatic screening and selecting device for concrete production, which comprises supporting legs, an outer fixed table and an inner rotating table, wherein the outer fixed table is arranged on the supporting legs; the whole outer fixing table is a horizontally arranged annular plate, and a plurality of supporting legs for supporting are uniformly fixed at the bottom of the outer fixing table; an annular inner collecting groove is fixed on one side of the plurality of supporting legs, which is close to the central shaft of the outer fixing table; the whole inner rotary table is a circular plate which is horizontally arranged, and the inner rotary table is connected above the inner collecting groove in a sliding manner; a plurality of supporting rods are fixed on one side of the inner collecting tank, which is close to the central shaft of the outer fixing table, and one ends of the supporting rods, which are far away from the inner collecting tank, are fixedly connected with a driving motor; the output end of the driving motor is fixedly connected with the bottom center of the inner rotary table; the outer diameter of the inner rotary table is smaller than the inner diameter of the outer fixed table, so that an annular gap is formed between the inner rotary table and the outer fixed table; the top surface of the inner rotary table is provided with a plurality of annular bulges, the circle centers of the annular bulges are the same as the circle center of the top surface circle of the inner rotary table, and the radii of the annular bulges are sequentially increased and distributed on the inner rotary table from inside to outside.
Further, the top surface of the inner rotary table is flush with the top surface of the outer fixed table; an annular outer collecting groove is fixed on one side of the plurality of supporting legs far away from the central shaft of the outer fixing table; the inner collecting groove is an annular groove with a hollow interior and an open upper end; the inner rotary table, the inner collecting tank and the outer fixing table are coaxially arranged; an outer baffle is fixed on the outer side of the top of the outer collecting tank; the outer diameter of the outer fixing table is smaller than the inner diameter of the outer baffle, and the outer collecting groove is an annular groove with a hollow inside and an open upper end, so that aggregate falls into the outer collecting groove through a gap between the outer fixing table and the outer baffle; and a blanking part for blanking is arranged above the inner rotary table and is fixed on the outer baffle plate.
Further, a plurality of arc-shaped openings are formed in the inner rotary table and are positioned above the inner collecting groove; the radius of the arc-shaped openings is the same, and the circle center of the arc-shaped openings is the same as the circle center of the top surface circle of the inner rotary table.
Further, the device also comprises an outer regulating body; the whole outer adjusting body is annular, and the outer adjusting body is positioned in the gap; the outer adjusting body is sleeved on the outer side wall of the inner rotary table; the outer adjusting body is hollow, the outer air pump component corresponding to the outer adjusting body is arranged at the bottom of the inner rotary table, and the outer air pump expands towards the outer fixing table when the outer air pump inflates towards the inner part of the outer adjusting body, so that the gap is reduced; when the outer air pump pumps air towards the inside of the outer adjusting body, the outer adjusting body contracts towards the circle center direction, so that the gap is enlarged.
Further, the device also comprises an inner regulating body; the inner adjusting bodies are in the same number as the arc-shaped openings and correspond to each other one by one, and the inner adjusting bodies are positioned in the corresponding arc-shaped openings; the whole shape of the inner adjusting body is arc-shaped, and the inner adjusting body is fixed on the inner wall of one side of the arc-shaped opening, which is close to the center of the circle; an inner air pump component corresponding to the inner adjusting body is arranged at the bottom of the inner rotary table; the inner adjusting body has the same structure as the outer adjusting body.
Further, the outer conditioning body comprises a plurality of inner and outer membranes; in the initial state, the whole inner membrane is round, and a plurality of inner membranes are uniformly fixed on the outer side wall of the inner rotary table; the outer membrane is an outer layer part of the outer adjusting body, and the inner membranes are positioned between the outer membrane and the outer side wall of the inner rotary table; the space surrounded by the inner membrane and the outer side wall of the inner rotary table is an inner cavity, and the space surrounded by the inner membrane, the outer side wall of the inner rotary table and the outer membrane is an outer cavity.
Further, an annular air passage is formed in the inner rotary table, and the air passage is communicated with the plurality of inner cavities; the pumping end of the outer air pump component is communicated with the air passage; the interior of the outer cavity is filled with an outer medium, and the outer medium is a mixture of paraffin and iron powder; and an electric heating wire is embedded in the outer cavity and used for heating an external medium.
Further, the outer adjusting body further comprises an air blowing pipe; the number of the air blowing pipes and the number of the inner films are the same and correspond to each other one by one; the whole air blowing pipe is in a circular pipe shape, and a pressure valve is arranged in the air blowing pipe; the air blowing pipe penetrates through the outer medium, and one end of the air blowing pipe, which is far away from the inner rotary table, is fixed on the outer membrane and penetrates through the outer membrane; one end of the air blowing pipe, which is close to the inner rotating table, is fixed on the corresponding inner membrane and penetrates through the inner membrane; one end of the air blowing pipe, which is far away from the inner rotary table, is positioned at the upper end part of the outer membrane, and the air blowing pipe is inclined towards the upper end direction of the gap.
Further, the outer adjusting body further comprises laser sensors, and the number of the air blowing pipes and the number of the laser sensors are the same and correspond to each other one by one; the laser sensor is fixed on the outer film and is positioned above the corresponding air blowing pipe; electromagnetic valves are arranged at the positions of the air passages communicated with the inner cavities.
Further, a plurality of elastic ropes and circular sheets are arranged in an opening at one side of the air blowing pipe far away from the inner rotating table, and the plurality of elastic ropes are uniformly fixed on the inner wall of the air blowing pipe; one end of the elastic rope, which is far away from the air blowing pipe, is fixedly connected with the wafer; the circular wafer is a circular metal sheet, and is positioned at the center of the opening of the air blowing pipe in the initial state.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
The automatic screening and selecting device for concrete production comprises a plurality of circular ring bulges, wherein the top surface of an inner rotary table is provided with the plurality of circular ring bulges, the circle centers of the plurality of circular ring bulges are the same as the circle center of the top surface circle of the inner rotary table, and the radii of the plurality of circular ring bulges are sequentially increased and are distributed on the inner rotary table from inside to outside; the technical problem that in the prior art, when a large number of aggregates are screened, part of needle-shaped flaky aggregates and aggregates with other shapes can not smoothly fall from a gap after being piled together, but enter an outer collecting tank for collecting the aggregates with other shapes along with the aggregates is effectively solved; and further, when the aggregates with more numbers are screened, the probability that part of the needle-shaped flaky aggregates and aggregates with other shapes are piled together is small, and the technical effect of improving the probability that the needle-shaped flaky aggregates smoothly fall from gaps is achieved.
Drawings
FIG. 1 is a schematic diagram of an automatic screening and selecting device for concrete production according to the present invention;
FIG. 2 is a schematic bottom view of an automatic screening and selecting apparatus for concrete production according to the present invention;
FIG. 3 is a schematic top view of an internal rotating table of the automatic screening and selecting device for concrete production of the present invention;
FIG. 4 is a schematic view of the position of the outer adjustment body of the automatic screening and selecting device for concrete production according to the present invention;
FIG. 5 is a schematic view of the outer regulator control gap size of the automatic screening and selecting device for concrete production according to the present invention;
FIG. 6 is a schematic view of the position of the internal adjustment body of the automatic screening and selecting device for concrete production according to the present invention;
FIG. 7 is a schematic view of the structure of the outer adjusting body of the automatic screening and selecting device for concrete production;
FIG. 8 is a schematic view of the position of the inner membrane of the automatic screening and selecting device for concrete production according to the present invention;
FIG. 9 is a schematic view of the automatic screening and selecting device for concrete production of the present invention with the enlarged cavity volume;
FIG. 10 is a schematic view of the position of the blow pipe of the automatic screening and selecting device for concrete production according to the present invention;
FIG. 11 is a schematic diagram of the distribution of blowpipes of an automatic screening and selecting device for concrete production according to the present invention;
FIG. 12 is a schematic illustration of the wafer position of the automatic screen selecting apparatus for concrete production of the present invention;
fig. 13 is a schematic view of the automatic screening and selecting apparatus for concrete production of the present invention when the round pieces are blown.
In the figure:
A leg 100;
an outer fixing table 200, an outer collecting tank 210, a discharging pipe 220, an outer baffle 230 and a discharging part 240;
the inner rotary table 300, the driving motor 310, the inner collecting groove 320, the supporting rod 330, the arc-shaped opening 340, the gap 350, the poking plate 360, the circular ring protrusion 370, the air passage 380 and the electromagnetic valve 381;
An outer regulating body 400, an inner membrane 410, an outer membrane 420, an inner cavity 430, an outer cavity 440, a blowing pipe 450, an elastic cord 451, a wafer 452, and a laser sensor 460;
an inner adjustment body 500.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings; the preferred embodiments of the present application are illustrated in the drawings, but the present application can be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
As shown in fig. 1 and 2, the automatic screening and selecting device for concrete production of the present application includes a leg 100, an outer fixing table 200, an inner rotating table 300, a power assembly and a control unit; the whole outer fixing table 200 is a horizontally arranged annular plate, and a plurality of supporting legs 100 for supporting are uniformly fixed at the bottom of the outer fixing table 200; an annular inner collecting groove 320 is fixed on one side of the plurality of supporting legs 100 close to the central shaft of the outer fixing table 200, the plurality of supporting legs 100 are positioned on the outer ring of the inner collecting groove 320, and the outer side of the top of the inner collecting groove 320 is fixedly connected with the bottom of the outer fixing table 200; the inner collecting groove 320 is an annular groove with a hollow interior and an open upper end; the whole inner rotary table 300 is a circular plate which is horizontally arranged, and the inner rotary table 300 is connected above the inner collecting groove 320 in a sliding way; a plurality of supporting rods 330 are fixed on one side of the inner collecting groove 320 close to the central shaft of the outer fixing table 200, and one ends of the plurality of supporting rods 330 far away from the inner collecting groove 320 are fixedly connected with the driving motor 310; the output end of the driving motor 310 is fixedly connected with the bottom center of the inner rotary table 300 and is used for driving the inner rotary table 300 to rotate; the top surface of the inner rotary table 300 is flush with the top surface of the outer fixed table 200, and the outer diameter of the inner rotary table 300 is smaller than the inner diameter of the outer fixed table 200, so that an annular gap 350 is formed between the inner rotary table 300 and the outer fixed table 200; the inner rotary table 300, the inner collecting groove 320 and the outer fixing table 200 are coaxially arranged; an annular outer collecting groove 210 is fixed on one side of the plurality of supporting legs 100 away from the central shaft of the outer fixing table 200, the plurality of supporting legs 100 are all positioned in the middle of the outer collecting groove 210, and the inner side of the top of the outer collecting groove 210 is fixedly connected with the bottom of the outer fixing table 200; an outer baffle 230 is fixed on the outer side of the top of the outer collecting tank 210, the outer baffle 230 is an annular plate corresponding to the outer collecting tank 210, and the top surface of the outer baffle 230 is higher than the top surface of the outer fixing table 200; the outer diameter of the outer fixing table 200 is smaller than the inner diameter of the outer baffle 230, and the outer collecting groove 210 is an annular groove which is hollow in the interior and is opened at the upper end, so that aggregate falls into the outer collecting groove 210 through a gap between the outer fixing table 200 and the outer baffle 230; a blanking member 240 for blanking is disposed above the inner rotary table 300, and the blanking member 240 is fixed on the outer baffle 230, which is a prior art and will not be described herein.
Preferably, a discharge pipe 220 for discharging is fixed to the bottom of both the outer collecting tank 210 and the inner collecting tank 320.
Further, as shown in fig. 3, the top surface of the inner rotary table 300 is provided with a plurality of annular protrusions 370, the circle center of the plurality of annular protrusions 370 is the same as the circle center of the top surface circle of the inner rotary table 300, and the radii of the plurality of annular protrusions 370 become larger in sequence and are distributed on the inner rotary table 300 from inside to outside; the inner rotary table 300 is provided with a plurality of arc openings 340, and the arc openings 340 are positioned above the inner collecting tank 320; the radius of the arc-shaped openings 340 is the same, and the circle center of the arc-shaped openings 340 is the same as the circle center of the top surface circle of the inner rotary table 300; the inner rotary table 300 is fixed with a pulling piece 360 for pulling the aggregate clamped in the gap 350, which is a prior art and will not be described herein.
Preferably, the outer diameter of the arcuate slot 340 is the same as the radius of the inner rotary table 300.
The power assembly is used for supplying energy for the operation of the detection platform, and is preferably an alternating current power supply or a battery; the control unit is used for controlling the coordinated operation of all the components of the detection platform, and is preferably a programmable logic controller; all are prior art and are not described in detail herein.
The automatic screening and selecting device for concrete production, provided by the embodiment of the application, has the following steps when in actual operation:
s1: firstly, adding aggregate to be screened into a blanking part 240; opening the driving motor 310 to enable the driving motor 310 to drive the inner rotary table 300 to rotate; then the dropping speed of the aggregate is controlled by adjusting the blanking part 240, and the aggregate is uniformly distributed on the inner rotary table 300;
S2: under the action of the rotating centrifugal force of the inner rotary table 300, the aggregates falling on the inner rotary table 300 move towards the outer ring direction, and under the layer-by-layer action of the plurality of annular bulges 370, the intervals among the aggregates with different volumes are enlarged, so that the possibility of aggregate stacking is reduced;
S3: under the action of the rotating centrifugal force of the inner rotary table 300, the aggregates to be sieved move in several parts: 1. a portion of the pin sheet aggregate falls from the arcuate mouth 340 into the inner collection trough 320; 2. a part of the needle-shaped aggregate directly passes over the arc-shaped opening 340 under the centrifugal action of the inner rotary table 300 and falls into the inner collecting groove 320 from the gap 350; 3. a part of the needle-shaped aggregate directly passes through the arc-shaped opening 340 and the gap 350 under the centrifugal action of the inner rotary table 300, directly moves to the edge position of the outer fixing table 200 and falls into the outer collecting tank 210; 4. a part of the non-needle flake aggregate directly moves to the edge position of the outer fixing table 200 and falls into the outer collecting tank 210 under the rotary conveying action of the inner rotary table 300;
S4: the aggregate in the outer collection tank 210 is removed and the above process is repeated for re-screening until the pin-shaped aggregate is completely screened out.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
By providing a plurality of annular projections 370, the spacing between the pin sheet aggregate and other aggregates is increased, reducing the likelihood of some pin sheet aggregate entering the outer collection trough 210; the arc-shaped opening 340 is arranged to screen the needle-shaped aggregate for the first time, and the gap 350 between the outer fixing table 200 and the inner rotating table 300 is screened for the second time, so that the possibility that part of the needle-shaped aggregate enters the outer collecting tank 210 is further reduced, and the screening and selecting efficiency of the device is improved.
Example two
In the above embodiment, the height of the inner rotating table 300 is controlled to control the size of the gap 350, but after the inner rotating table 300 is controlled to be lowered to control the gap 350 to be enlarged, a height difference occurs between the outer fixing table 200 and the inner rotating table 300, so that the possibility that the aggregate is blocked between the gaps 350 becomes large; the embodiment of the application is optimized to a certain extent on the basis of the embodiment.
As shown in fig. 4 and 5, the automatic screening and selecting device for concrete production of the present application further comprises an outer adjustment body 400; the outer adjusting body 400 is in a ring shape as a whole, and the outer adjusting body 400 is positioned in the gap 350; the outer adjusting body 400 is sleeved on the outer side wall of the inner rotary table 300; the outer adjusting body 400 is hollow, an outer air pump component corresponding to the outer adjusting body 400 is arranged at the bottom of the inner rotary table 300, and when the outer air pump inflates towards the inside of the outer adjusting body 400, the outer adjusting body 400 expands towards the direction of the outer fixing table 200, so that the gap 350 becomes smaller; when the external air pump pumps air towards the inside of the external adjusting body 400, the external adjusting body 400 contracts towards the center direction, so that the gap 350 becomes larger.
Further, as shown in fig. 6, the automatic screening and selecting device for concrete production of the present application further comprises an inner adjusting body 500; the number of the inner adjusting bodies 500 is the same as that of the arc-shaped openings 340 and corresponds to one, and the inner adjusting bodies 500 are positioned in the corresponding arc-shaped openings 340; the whole shape of the inner adjusting body 500 is arc-shaped, and the inner adjusting body 500 is fixed on the inner wall of one side of the arc-shaped opening 340 close to the center of the circle; the bottom of the inner rotary table 300 is provided with an inner air pump assembly corresponding to the inner adjusting body 500; the inner adjustment body 500 has the same structure as the outer adjustment body 400.
Preferably, the outer adjusting body 400 and the inner adjusting body 500 are made of rubber.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
By providing the outer adjustment body 400 and the inner adjustment body 500, a height difference does not occur between the outer fixing table 200 and the inner rotating table 300 when the gap 350 and the arc opening 340 are controlled, and the possibility that aggregates are stuck between the gaps 350 is reduced.
Example III
In the above embodiment, the outer adjusting body 400 is deformed to a certain extent under the extrusion of the aggregate, so that the accuracy of screening and selecting materials is not enough; the embodiment of the application is optimized to a certain extent on the basis of the embodiment.
As shown in fig. 7 and 8, the outer regulating body 400 includes a plurality of inner films 410 and outer films 420; in the initial state, the inner film 410 is circular as a whole, and a plurality of inner films 410 are uniformly fixed on the outer sidewall of the inner rotary table 300; the outer membrane 420 is an outer layer portion of the outer adjustment body 400, and the plurality of inner membranes 410 are located between the outer membrane 420 and an outer side wall of the inner rotary table 300; the space surrounded by the inner membrane 410 and the outer side wall of the inner rotary table 300 is an inner cavity 430, and the space surrounded by the inner membrane 410, the outer side wall of the inner rotary table 300 and the outer membrane 420 is an outer cavity 440; an annular air passage 380 is formed in the inner rotary table 300, and the air passage 380 is communicated with the plurality of inner cavities 430; the pumping end of the outer air pump component is communicated with an air passage 380; the outer cavity 440 is filled with an outer medium, and the outer medium is a mixture of paraffin and iron powder; an electric heating wire is embedded in the outer cavity 440 for heating the external medium.
Preferably, the mass ratio of the paraffin to the iron powder is 1; the inner film 410 and the outer film 420 are made of rubber.
As shown in fig. 7 and fig. 9, when the volume of the outer adjusting body 400 needs to be changed to control the gap 350, the electric heating wire is started to heat the outer medium, under the heat conduction effect of the iron powder in the outer medium, after paraffin in the outer medium is melted, the inner cavity 430 is pumped by controlling the outer air pump assembly, the volume of the inner gas of the inner cavity 430 is controlled to control the whole volume of the outer adjusting body 400, then the electric heating wire is turned off, the paraffin is solidified into a solid, and the outer medium is a mixture of the paraffin and the iron powder, so that the outer adjusting body 400 has better hardness.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
the hardness of the outer adjusting body 400 is improved, the deformation of the outer adjusting body 400 under the extrusion of aggregate is reduced, and the screening accuracy is improved; the inner films 410 are plural, so that the contact area between the outer adjusting body 400 and the inner rotary table 300 in the outer cavity 440 is large and the contact positions are uniformly distributed, and the solidified medium is dome-shaped as a whole, so that the pressure bearing capacity of the outer adjusting body 400 is stronger.
Example IV
In the above embodiment, if the irregular aggregate (such as thin at one end and thick at one end) is caught in the gap 350, the aggregate is not easily pulled out by the pulling sheet 360 alone; the embodiment of the application is optimized to a certain extent on the basis of the embodiment.
As shown in fig. 10 and 11, the outer adjustment body 400 further includes a blowing pipe 450 and a laser sensor 460; the number of the blowpipe 450, the inner film 410 and the laser sensor 460 is the same and corresponds to one; the whole of the air blowing pipe 450 is in a circular pipe shape, and a pressure valve is arranged in the air blowing pipe 450; the air blowing pipe 450 passes through the outer medium, one end of the air blowing pipe 450 far away from the inner rotary table 300 is fixed on the outer membrane 420, and the end passes through the outer membrane 420; one end of the blowing pipe 450 near the inner rotary table 300 is fixed to the corresponding inner film 410, and the end passes through the inner film 410; one end of the air blowing pipe 450 away from the inner rotary table 300 is positioned at the upper end of the outer film 420, and the air blowing pipe 450 is inclined toward the upper end of the gap 350; the laser sensors 460 are fixed on the outer film 420, and the laser sensors 460 are located above the corresponding blowing pipes 450; electromagnetic valves 381 are arranged at the positions where the air passages 380 are communicated with the inner cavities 430; when a certain laser sensor 460 detects that no aggregate falls, it indicates that aggregate is clamped in a gap 350 corresponding to the laser sensor 460, a corresponding electromagnetic valve 381 is controlled to be opened, the outer air pump component pumps the inner cavity 430, and when the air pressure in the inner cavity 430 is greater than a set threshold value of the pressure valve, the air blowing pipe 450 is conducted and blows air towards the clamped aggregate, so that the clamped aggregate is subjected to a force from bottom to top, and the aggregate can be easily pulled out under the combined action of the pulling piece 360 and the air blowing pipe 450.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
Through setting up solenoid valve 381 and slope up the blowpipe 450, make the aggregate can be harder by dialling under plectrum 360 and blowpipe 450 combined action.
Example five
In the above embodiment, if the aggregate stuck in the gap 350 is heavy, the effect is poor when the aggregate is blown by the blowing pipe 450; the embodiment of the application is optimized to a certain extent on the basis of the embodiment.
As shown in fig. 12 and 13, a plurality of elastic ropes 451 and a circular piece 452 are arranged in the opening of the air blowing pipe 450 at the side far away from the inner rotating table 300, and the plurality of elastic ropes 451 are uniformly fixed on the inner wall of the air blowing pipe 450; one end of the elastic rope 451, which is far away from the air blowing pipe 450, is fixedly connected with the wafer 452; the wafer 452 is a circular metal sheet, and in the initial state, the wafer 452 is positioned at the center of the opening of the air blowing pipe 450; when the air blowing pipe 450 blows outwards, the wafer 452 is blown out of the air blowing pipe 450, so that the wafer 452 plays a role in pushing the aggregate clamped in the gap 350; after the inflation tube 450 is no longer inflated, the disc 452 is reset by pulling the elastic cord 451.
Preferably, the elastic cord 451 is made of rubber.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
Through setting up elastic cord 451 and disk 452 for disk 452 plays the effect of promoting the aggregate of card in clearance 350, and heavier aggregate also can be more easily dialled out clearance 350.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An automatic screening and selecting device for concrete production comprises supporting legs (100), an outer fixed table (200) and an inner rotary table (300); the whole outer fixing table (200) is a horizontally arranged annular plate, and a plurality of supporting legs (100) for supporting are uniformly fixed at the bottom of the outer fixing table (200); an annular inner collecting groove (320) is fixed on one side of the plurality of supporting legs (100) close to the central shaft of the outer fixing table (200); the device is characterized in that the whole inner rotary table (300) is a circular plate which is horizontally arranged, and the inner rotary table (300) is connected above the inner collecting groove (320) in a sliding way; a plurality of supporting rods (330) are fixed on one side of the inner collecting groove (320) close to the central shaft of the outer fixing table (200), and one ends of the supporting rods (330) far away from the inner collecting groove (320) are fixedly connected with the driving motor (310); the output end of the driving motor (310) is fixedly connected with the bottom center of the inner rotary table (300); the outer diameter of the inner rotary table (300) is smaller than the inner diameter of the outer fixed table (200), so that an annular gap (350) is formed between the inner rotary table (300) and the outer fixed table (200); a plurality of circular ring bulges (370) are formed on the top surface of the inner rotary table (300), the circle centers of the circular ring bulges (370) are the same as the circle center of the top surface circle of the inner rotary table (300), and the radiuses of the circular ring bulges (370) are sequentially increased and distributed on the inner rotary table (300) from inside to outside.
2. An automatic screening and selecting device for concrete production according to claim 1, characterized in that the top surface of the inner rotary table (300) is flush with the top surface of the outer stationary table (200); an annular outer collecting groove (210) is fixed on one side of the plurality of supporting legs (100) far away from the central shaft of the outer fixing table (200); the inner collecting groove (320) is an annular groove with a hollow interior and an open upper end; the inner rotary table (300), the inner collecting groove (320) and the outer fixing table (200) are coaxially arranged; an outer baffle (230) is fixed on the outer side of the top of the outer collecting tank (210); the outer diameter of the outer fixing table (200) is smaller than the inner diameter of the outer baffle plate (230), and the outer collecting groove (210) is an annular groove with a hollow inside and an open upper end, so that aggregate falls into the outer collecting groove (210) through a gap between the outer fixing table (200) and the outer baffle plate (230); a blanking part (240) for blanking is arranged above the inner rotary table (300), and the blanking part (240) is fixed on the outer baffle plate (230).
3. The automatic screening and selecting device for concrete production according to claim 2, wherein a plurality of arc-shaped openings (340) are formed in the inner rotary table (300), and the arc-shaped openings (340) are positioned above the inner collecting tank (320); the radiuses of the arc-shaped openings (340) are the same, and the circle centers of the arc-shaped openings (340) are the same as the circle center of the top surface circle of the inner rotary table (300).
4. An automatic screening and selecting device for concrete production according to claim 3, further comprising an outer adjustment body (400); the whole outer adjusting body (400) is annular, and the outer adjusting body (400) is positioned in the gap (350); the outer adjusting body (400) is sleeved on the outer side wall of the inner rotary table (300); the inside of the outer adjusting body (400) is hollow, an outer air pump component corresponding to the outer adjusting body (400) is arranged at the bottom of the inner rotary table (300), and when the outer air pump inflates towards the inside of the outer adjusting body (400), the outer adjusting body (400) expands towards the direction of the outer fixing table (200), so that the gap (350) is reduced; when the external air pump pumps air towards the inside of the external adjusting body (400), the external adjusting body (400) contracts towards the circle center direction, so that the gap (350) is enlarged.
5. An automatic screening and sorting apparatus for concrete production according to claim 4, further comprising an internal adjustment body (500); the inner adjusting bodies (500) are the same in number and correspond to the arc-shaped openings (340) one by one, and the inner adjusting bodies (500) are positioned in the corresponding arc-shaped openings (340); the whole shape of the inner adjusting body (500) is arc-shaped, and the inner adjusting body (500) is fixed on the inner wall of one side, close to the center of a circle, of the arc-shaped opening (340); an inner air pump component corresponding to the inner adjusting body (500) is arranged at the bottom of the inner rotary table (300); the inner adjusting body (500) has the same structure as the outer adjusting body (400).
6. An automatic screening and selecting device for concrete production according to claim 4, characterized in that said outer adjustment body (400) comprises a plurality of inner membranes (410) and outer membranes (420); in the initial state, the whole inner membrane (410) is round, and a plurality of inner membranes (410) are uniformly fixed on the outer side wall of the inner rotary table (300); the outer membrane (420) is an outer layer part of the outer adjusting body (400), and the plurality of inner membranes (410) are positioned between the outer membrane (420) and the outer side wall of the inner rotary table (300); the space surrounded by the inner membrane (410) and the outer side wall of the inner rotary table (300) is an inner cavity (430), and the space surrounded by the inner membrane (410), the outer side wall of the inner rotary table (300) and the outer membrane (420) is an outer cavity (440).
7. The automatic screening and selecting device for concrete production according to claim 6, wherein an annular air passage (380) is formed in the inner rotary table (300), and the air passage (380) is communicated with a plurality of inner cavities (430); the pumping end of the outer air pump component is communicated with an air passage (380); the interior of the outer cavity (440) is filled with an outer medium, and the outer medium is a mixture of paraffin and iron powder; an electric heating wire is embedded in the outer cavity (440) and is used for heating an external medium.
8. The automatic screening and selecting device for concrete production according to claim 7, wherein said outer adjustment body (400) further comprises an air blowing pipe (450); the number of the air blowing pipes (450) and the number of the inner films (410) are the same and correspond to each other one by one; the whole air blowing pipe (450) is in a circular pipe shape, and a pressure valve is arranged in the air blowing pipe (450); the air blowing pipe (450) penetrates through the outer medium, and one end, far away from the inner rotary table (300), of the air blowing pipe (450) is fixed on the outer membrane (420) and penetrates through the outer membrane (420); one end of the air blowing pipe (450) close to the inner rotary table (300) is fixed on the corresponding inner membrane (410) and penetrates through the inner membrane (410); one end of the air blowing pipe (450) far away from the inner rotary table (300) is positioned at the upper end part of the outer film (420), and the air blowing pipe (450) is inclined towards the upper end direction of the gap (350).
9. The automatic screening and selecting device for concrete production according to claim 8, wherein the outer adjusting body (400) further comprises laser sensors (460), and the number of the air blowing pipes (450) and the number of the laser sensors (460) are the same and correspond to each other one by one; the laser sensor (460) is fixed on the outer film (420), and the laser sensor (460) is positioned above the corresponding blowing pipe (450); electromagnetic valves (381) are arranged at the positions of the air passages (380) communicated with the inner cavities (430).
10. The automatic screening and selecting device for concrete production according to claim 9, wherein a plurality of elastic ropes (451) and circular plates (452) are arranged in an opening at one side of the air blowing pipe (450) far away from the inner rotating table (300), and the plurality of elastic ropes (451) are uniformly fixed on the inner wall of the air blowing pipe (450); one end of the elastic rope (451) far away from the air blowing pipe (450) is fixedly connected with the wafer (452); the circular wafer (452) is a circular metal sheet, and in the initial state, the circular wafer (452) is positioned at the center of the opening of the air blowing pipe (450).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410318221.7A CN117943271A (en) | 2024-03-20 | 2024-03-20 | Automatic screening and selecting device for concrete production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410318221.7A CN117943271A (en) | 2024-03-20 | 2024-03-20 | Automatic screening and selecting device for concrete production |
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| CN117943271A true CN117943271A (en) | 2024-04-30 |
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| CN202410318221.7A Pending CN117943271A (en) | 2024-03-20 | 2024-03-20 | Automatic screening and selecting device for concrete production |
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