CN114797588A - Wet mixing machine and automatic aggregate cleaning control method thereof - Google Patents
Wet mixing machine and automatic aggregate cleaning control method thereof Download PDFInfo
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- CN114797588A CN114797588A CN202210324368.8A CN202210324368A CN114797588A CN 114797588 A CN114797588 A CN 114797588A CN 202210324368 A CN202210324368 A CN 202210324368A CN 114797588 A CN114797588 A CN 114797588A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 184
- 239000004576 sand Substances 0.000 claims abstract description 103
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000008400 supply water Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000009736 wetting Methods 0.000 description 4
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- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2216—Time, i.e. duration, of at least one parameter during the operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients
Abstract
The invention provides a wet mixing machine and an automatic aggregate cleaning control method thereof, wherein the wet mixing machine comprises a stirring cylinder, a rotary driving machine, a water supply mechanism and a controller, wherein the stirring cylinder is obliquely arranged, and both ends of the stirring cylinder are respectively provided with a finished product sand inlet and a finished product sand outlet; the rotary driving mechanism is arranged at the bottom of the mixing drum and is used for driving the mixing drum to rotate; the water supply mechanism is communicated with the mixing drum through a water supply pipeline and sprays water into the mixing drum; the controller is electrically connected to both the rotary drive motor and the water supply mechanism and is configured to: acquiring the feeding state of a finished sand inlet in real time; when no material is fed into a finished product sand inlet, acquiring the current load power of the rotary driving mechanism, and judging the material collecting degree of the mixing drum according to the current load power; and controlling the water supply amount of the water supply mechanism according to the aggregate degree. According to the invention, before the wet mixing is finished each time, the system automatically judges and cleans the aggregate, the aggregate degree is low, the aggregate is not accumulated to form hardening each time, and the damage risk of the mixing drum possibly caused by cleaning the seriously hardened aggregate is avoided.
Description
Technical Field
The invention belongs to the technical field of sand making production, and particularly relates to a wet mixing machine and an automatic aggregate cleaning control method of the wet mixing machine.
Background
The sandstone aggregate is a building material widely applied in the construction field, the use of natural sand is gradually reduced due to the fact that mining is forbidden and limited in the traditional natural sand, and the sandstone aggregate is used as a main stream of the use of the finished sand aggregate industry instead of machine-made sand. Mix wet quick-witted churn rotation and mix the during operation, because contain fine material mountain flour (the particle diameter is less than or equal to 0.075mm) in the finished product machine-made sand, at the water mixing in-process, especially at feed inlet department because moisture and finished product sand are not fully mixed evenly yet, finished product sand granule, fine material stone flour, moisture glues together with the churn wall easily, thereby form regional hardened and gathered materials phenomenon, therefore reduce and mix wet quick-witted mix ability, can not effectively raise the material after the material raising plate gathers materials, the stirring number of times of finished product sand and moisture has been reduced, influence the mix degree of consistency of finished product sand and water. Therefore, the bonding material hardening condition in the mixing drum needs to be observed manually at regular intervals, when the bonding material is hardened seriously, the bonding material needs to enter the mixing wet machine from the overhaul observation port at the rear end for cleaning, automatic cleaning cannot be realized, after the bonding material is hardened and agglomerated for a long time due to untimely cleaning, the cleaning is difficult, the bonding material needs to be removed by a tool, the wall of the mixing drum is easy to damage, and the service life of the mixing wet machine is influenced.
Disclosure of Invention
The invention mainly aims to provide a wet mixing machine and an automatic aggregate cleaning control method of the wet mixing machine, and aims to solve the technical problems that aggregates in the wet mixing machine cannot be automatically judged and are difficult to clean in the prior art.
In order to achieve the above object, the present invention provides a humidifying machine including:
the mixing drum is obliquely arranged, and a finished product sand inlet and a finished product sand outlet are respectively formed in two ends of the mixing drum;
the rotation driving mechanism is arranged at the bottom of the mixing drum and is used for driving the mixing drum to rotate;
the water supply mechanism is communicated with the stirring cylinder through a water supply pipeline and sprays water into the stirring cylinder; and
a controller in communicative connection with the rotary drive motor, the controller being electrically connected to a water supply mechanism and configured to:
acquiring the feeding state of the finished sand inlet in real time;
when no material is fed into the finished product sand inlet, acquiring the current load of the rotary driving mechanism, and judging the aggregate degree of the mixing drum according to the current load;
and controlling the water supply amount of the water supply mechanism according to the aggregate degree.
In the embodiment of the invention, a plurality of lifting blades are arranged on the inner peripheral side wall of the mixing drum at equal intervals along the length direction, and the lifting blades are obliquely connected with the inner wall of the mixing drum.
In the embodiment of the invention, the water supply mechanism comprises a water storage tank and a variable frequency water pump, one end of the water supply pipeline extends into the water storage tank and is connected with the variable frequency water pump, the other end of the water supply pipeline vertically penetrates through the side wall of the head end of the stirring drum and is axially arranged in the stirring drum in an extending manner, and the side wall of the water supply pipeline is provided with a plurality of water pipe spray heads which are outwards protruded at intervals along the length direction.
In an embodiment of the present invention, a flow valve for controlling a water supply amount of the water supply pipeline is installed on a pipe section of the water supply pipeline located outside the mixing drum, and the controller is electrically connected with the flow valve and further configured to:
acquiring the weight of the finished sand entering from the finished sand inlet in real time;
controlling the opening of a flow valve according to the weight of the finished sand;
and controlling the water supply frequency of the variable-frequency water pump according to the opening degree of the flow valve.
In the embodiment of the invention, the finished sand inlet is positioned at the head end of the mixing drum and is obliquely arranged upwards in the opening direction, and the finished sand outlet is positioned at the tail end of the mixing drum and is downwards arranged in the opening direction.
In the embodiment of the invention, two rolling rings are attached to the peripheral wall of the mixing drum, and the two rolling rings are respectively arranged close to the head end and the tail end of the mixing drum.
In an embodiment of the invention, the wet mixer further comprises a frame, the surface of the frame is obliquely arranged and used for bearing the mixing drum, a plurality of carrier rollers are mounted on the frame, the outer peripheral walls of the carrier rollers are in rolling contact with the outer side walls of the rolling rings, the rotary driving mechanism comprises a driving motor and a coupling assembly in transmission connection with the driving motor, and the driving motor is connected with the carrier rollers through the coupling assembly and used for driving the carrier rollers to rotate.
In the embodiment of the invention, the surface of the carrier roller is made of polyurethane.
In the embodiment of the invention, the frame is provided with a catch wheel, and the catch wheel is abutted against the tail end of the stirring cylinder.
In an embodiment of the present invention, an aggregate automatic cleaning control method for a wet mixer is further provided, which is applied to the wet mixer described above, and the aggregate automatic cleaning control method for the wet mixer includes the steps of:
acquiring the feeding state of the finished sand inlet in real time;
when no material is fed into the finished product sand inlet, acquiring the current load power of the rotary driving mechanism, and judging the aggregate degree of the mixing drum according to the current load power;
and controlling the water supply amount of the water supply mechanism according to the aggregate degree.
In an embodiment of the present invention, the rotary driving mechanism includes a driving motor and a coupling component in transmission connection with the driving motor, and the step of obtaining a current load of the rotary driving mechanism when the finished sand inlet is not fed and determining the aggregate level of the mixing drum according to the current load includes:
obtaining the current load power P of the driving motor 1 ；
Comparing the current load power P 1 And normal load rate P 0 The relationship of (1);
when (P) 1 -P 0 )/P 0 Judging that the aggregate degree of the stirring cylinder is mild when the aggregate content is less than or equal to 5 percent by 100 percent;
when (P) 1 -P 0 )/P 0 And if 100% is more than 5%, judging that the aggregate degree of the mixing drum is severe.
In an embodiment of the present invention, the controlling of the water supply amount of the water supply means according to the aggregate level comprises:
when the aggregate degree of the mixing drum is severe, controlling the variable frequency water pump to supply water according to a preset frequency and controlling the flow valve to discharge water according to a preset water supply amount;
when the water discharging time reaches a first preset time, closing the variable frequency water pump and the flow valve;
and after waiting for a second preset time, judging the current aggregate degree of the mixing drum again, and repeating the steps until the current aggregate degree of the mixing drum is slight, and controlling the mixing drum to normally stop.
Through the technical scheme, the wet mixing machine provided by the embodiment of the invention has the following beneficial effects:
the mixing drum of the wet mixing machine is obliquely arranged, and a finished product sand inlet and a finished product sand outlet are respectively formed in two ends of the mixing drum, in the wet mixing process, the water supply mechanism sprays water into the mixing drum through a water supply pipeline, and the rotary driving mechanism drives the mixing drum to rotate so that the finished product sand entering the mixing drum is uniformly mixed with moisture. When no material is fed at a finished product sand inlet and before the wet mixing machine stops, the controller acquires the current load power of the rotary driving mechanism and judges the material collection degree of the mixing drum according to the current load power; when the aggregates in the mixing drum are heavy, controlling the water supply mechanism to increase the water supply amount to disperse the aggregates adhered to the drum wall; when the collection materials in the mixing drum are light, the water supply mechanism is controlled to stop supplying water, and the mixing drum is shut down to be processed, so that the collection materials in the mixing drum are automatically judged and timely processed, the risk of damage to the mixing drum caused by serious hardened collection material cleaning is avoided, and the service life of the mixing drum is prolonged.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic front view of a damping machine according to an embodiment of the present invention;
FIG. 2 is a schematic left side view of a damping machine according to an embodiment of the invention;
FIG. 3 is a schematic view of a portion of a water supply pipeline of the damping machine according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a first embodiment of an aggregate automatic cleaning control method of a damping machine according to the present invention;
FIG. 5 is a schematic flow chart of a second embodiment of an aggregate automatic cleaning control method of a damping machine according to the present invention;
fig. 6 is a schematic flow chart of a third embodiment of the aggregate automatic cleaning control method of the damping machine according to the present invention.
Description of the reference numerals
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
30 | |
| 11 | |
31 | |
| 12 | Finished |
32 | |
| 13 | Outlet for finished |
40 | |
| 20 | |
41 | |
| 21 | Frequency |
42 | Rolling |
| 22 | |
43 | |
| 23 | |
50 | |
| 24 | |
60 | |
| 25 | Flow valve |
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
The following describes a damping machine and an aggregate automatic cleaning control method thereof according to the present invention with reference to the accompanying drawings.
The mechanical sand making equipment is used for preparing broken stones with the particle size of less than 40mm into mechanical sand, the wet mixing machine configured for the sand making equipment is used for mixing and stirring finished sand particles with different particle sizes, which are prepared by the sand making equipment, of 0-5mm in drying degree and water uniformly, the water content in the finished sand is controlled to be 3-5%, and the finished sand is in a saturated surface dry state, so that the segregation phenomenon caused by serious separation of raised dust and particles with different particle sizes in the rear end conveying process is avoided, and the quality of the finished sand made by the mechanical sand making equipment is ensured. In order to prevent the influence of the serious aggregate inside the wet-mixing machine on the service life of the wet-mixing machine before the start of the wet-mixing, as shown in fig. 1, in an embodiment of the present invention, there is provided a wet-mixing machine, including:
the mixing drum 10 is obliquely arranged, and two ends of the mixing drum are respectively provided with a finished product sand inlet 12 and a finished product sand outlet 13; the finished product sand inlet 12 is positioned at the head end of the mixing drum 10, the opening direction of the finished product sand inlet is arranged obliquely upwards, and the finished product sand outlet 13 is positioned at the tail end of the mixing drum 10, and the opening direction of the finished product sand outlet is arranged downwards;
a rotation driving mechanism 30 mounted at the bottom of the mixer drum 10 and configured to drive the mixer drum 10 to rotate;
a water supply mechanism 20 which is communicated with the mixing drum 10 through a water supply pipeline 23 and sprays water into the mixing drum 10; and
a controller 60 communicatively coupled to the rotary drive motor 31, the controller 60 being electrically coupled to the water supply mechanism 20 and configured to:
acquiring the feeding state of a finished sand inlet 12 in real time;
when no material is fed into the finished product sand inlet 12, acquiring the current load of the rotary driving mechanism 30, and judging the aggregate degree of the mixing drum 10 according to the current load;
the water supply amount of the water supply mechanism 20 is controlled according to the aggregate level.
After the finished sand inlet 12 finishes feeding, if the aggregate on the inner wall of the mixing drum 10 is more, the current load of the corresponding rotary driving mechanism 30 is larger, so that the aggregate can be judged to be serious at this time. When the aggregate degree in the mixing drum 10 is severe, the water supply mechanism 20 is controlled to increase the water supply amount to disperse the aggregate adhered to the drum wall; when the aggregate degree in the mixing drum 10 is light, controlling the water supply mechanism 20 to stop supplying water, and stopping the mixing drum 10; the aggregate of the wet mixing machine is processed in time, so that the hysteresis of manual cleaning is avoided, the efficient and high-quality work of the wet mixing machine is ensured, and the uniformity of mixing finished sand and water is ensured; and can carry out automatic analysis and judgment to the wet mixer degree of gathering materials, not all clear up churn 10 at every turn, the water consumption is few, environmental protection and energy saving.
It should be noted that, if the inclination angle of the mixing drum 10 is too small, the movement speed of the sand entering from the finished sand inlet 12 to the finished sand outlet 13 is too slow after being mixed and wetted, which affects the wet mixing efficiency; if the inclination angle of the mixing drum 10 is too large, the sand entering from the finished product sand inlet 12 can not be mixed uniformly and can go out from the finished product sand outlet 13, so that the wet mixing effect is influenced; therefore, the range of the inclination angle of the agitating drum 10 is set to be greater than 0 ° and less than 15 °.
In the embodiment of the present invention, a plurality of material raising plates are arranged on the inner peripheral side wall of the mixing drum 10 at equal intervals along the length direction, and the material raising plates are connected with the inner wall of the mixing drum 10 in an inclined manner.
Dry finished sand particles with different particle sizes of 0-5mm prepared by a sand making device enter the stirring cylinder 10 through a finished sand inlet 12, and because friction exists between the finished sand particles and the cylinder wall of the stirring cylinder 10, the finished sand particles fall down after being thrown up along with the stirring cylinder 10 under the material throwing of the material throwing plate; because the mixing drum 10 is installed in an inclined manner, the finished sand particles continuously move in the direction of the finished sand outlet 13 in the process of continuously raising dust and dropping, enter the discharge port when reaching the top end of the mixing drum 10, are discharged from the finished sand outlet 13 at the lower end of the discharge port under the action of gravity, enter the rear-end equipment (such as the conveyor belt 50 in fig. 1), and are conveyed to other places. The shape of the material raising plate can be a rectangular, triangular or round plate-shaped structure;
as is well known, the inner tube wall of normal churn 10 is smooth, and finished product sand enters into in the churn 10 like this and the frictional force between the smooth inside wall is less to lead to the finished product sand can't be kicked up and influence and stir wet effect, consequently set up the material lifting height and the material lifting volume of a plurality of lifting blades in order to increase finished product sand at the inside wall of churn 10, improve the material lifting effect.
In the embodiment of the present invention, the water supply mechanism 20 includes a water storage tank 22 and a variable frequency water pump 21, one end of the water supply pipeline 23 extends into the water storage tank 22 and is connected to the variable frequency water pump 21, the other end of the water supply pipeline vertically penetrates through the sidewall of the head end of the mixing drum 10 and is arranged in the mixing drum 10 in an axially extending manner, and the sidewall of the water supply pipeline 23 is provided with a plurality of water pipe nozzles 24 protruding outwards at intervals along the length direction. The number and the positions of the water pipe nozzles 24 are not limited to the marks in the drawings of the present application, and can be set according to actual requirements as long as the purpose of wetting the sand and stone in the mixing drum 10 can be satisfied.
Specifically, the variable frequency water pump 21 is placed in the water storage tank 22, the variable frequency water pump 21 is connected with the water inlet end of the water supply pipeline 23, the water outlet end of the water supply pipeline 23 vertically enters the mixing drum 10, a water pipe spray head 24 is installed at the tail of the part of the water supply pipeline 23 located in the mixing drum 10, and a flow valve 25 is installed on the water supply pipeline 23 exposed outside the mixing drum 10 and used for controlling the water volume passing through the water supply pipeline 23. And, a plurality of water pipe spray heads 24 are installed at the tail end of water supply pipeline 23 according to a certain distance, and water supply pipeline 23 is inside to communicate with water pipe spray heads 24, and water can erupt through the water pipe nozzle, and the water pipe end cap is installed to the end of water supply pipeline 23, prevents that water from flowing out from the end. In other embodiments, the water storage tank 22 may be omitted as needed, and the variable frequency water pump 21 may be directly connected to tap water with adjustable water flow.
In the embodiment of the present invention, a flow valve 25 for controlling the water supply amount of the water supply pipeline 23 is installed on the pipe section of the water supply pipeline 23 located outside the mixing drum 10, and the controller 60 is electrically connected with the flow valve 25 and is further configured to:
acquiring the weight of finished sand entering from a finished sand inlet 12 in real time;
controlling the opening of the flow valve 25 according to the weight of the finished sand;
and controlling the water supply frequency of the variable frequency water pump 21 according to the opening degree of the flow valve 25.
The flow-adjustable water supply mechanism 20 in this embodiment can realize normal working water supply of the wet mixer, and can achieve the purpose of cleaning aggregate in the mixing drum 10 by adjusting the flow.
When the finished sand particles enter the mixing drum 10, the controller 60 sends out a control signal, the water tank 22 is opened to receive tap water, then the variable frequency water pump 21 starts water supply, water enters the mixing drum 10 through the water supply pipeline 23 and is sprayed into the mixing drum 10 from the water pipe spray head 24 to be mixed with the finished sand particles which are not thrown continuously, the uniformly mixed mixture is discharged from the discharge port, the water supply amount is controlled by the flow valve 25, the water content of the finished sand is controlled to be 3% -5%, and the water passing amount of the flow valve 25 is sent out by the controller 60 according to the weight analysis of the finished sand entering the mixing drum 10. In this embodiment, the controller 60 controls the flow rate of the flow valve 25 and controls the variable frequency water pump 21, so that the variable frequency water pump 21 adjusts the water supply amount according to the flow rate of the water required by the flow valve 25. Specifically, the controller 60 needs to determine the water content of the finished sand entering the mixing drum 10, compare the current water content of the finished sand with the required water content of the finished sand, determine the amount of water to be sprayed according to the corresponding difference, and then the controller 60 controls the opening of the flow valve 25 to adjust the water supply amount of the water supply pipeline 23 to the mixing drum 10; when the water supply amount is changed, the water supply frequency of the variable frequency water pump 21 needs to be correspondingly controlled according to the opening degree of the flow valve 25, so that the water supply frequency of the variable frequency water pump 21 and the opening degree of the flow valve 25 meet the normal flow state.
Further, since the outer wall of the mixing drum 10 is very thin, if the outer wall of the mixing drum 10 directly contacts with the carrier roller 41, the carrier roller 41 will wear the mixing drum 10 during the rotation process, which affects the service life, in the embodiment of the present invention, two rolling rings 42 are attached to the outer wall of the mixing drum 10, and the two rolling rings 42 are respectively disposed near the head end and the tail end of the mixing drum 10. Because the rolling ring 42 in this embodiment is made of steel, the agitating drum 10 can be prevented from being damaged by abrasion, and the service life of the agitating drum 10 can be prolonged.
As shown in fig. 2, the wet mixer further includes a frame 40 arranged with an inclined surface and used for carrying the mixing drum 10, a plurality of carrier rollers 41 are mounted on the frame 40, the peripheral wall of the carrier roller 41 is in rolling contact with the outer side wall of the rolling ring 42, the rotary driving mechanism 30 includes a driving motor 31 and a coupling assembly 32 in transmission connection with the driving motor 31, and the driving motor 31 is connected with the carrier roller 41 through the coupling assembly 32 and used for driving the carrier roller 41 to rotate. The coupling assembly 32 extends in the left-right direction to connect two idlers 41 arranged at intervals in the left-right direction on the same line. As indicated by the rotation arrow in fig. 2, the rotation direction of the rotation shaft of the drive motor 31 is opposite to the rotation direction of the agitating drum 10. The controller 60 reads and processes the complex load data of the driving motor 31, analyzes the complex load data with the internal data of the controller 60, outputs control logic and signals, and automatically controls the operation of the whole device.
Preferably, the number of the idlers 41 is four, and 4 idlers 41 are respectively installed at four positions of the front, the rear, the left, and the right of the frame 40, wherein two idlers 41 are connected with the driving motor 31 through the coupling assembly 32. The coupling assembly 32 includes a bearing and a coupling, and transmits the rotation power of the driving motor 31 to the carrier roller 41 to drive the carrier roller 41 and the mixing drum 10 to rotate relatively, so as to rotate and mix the sand and gravel in the mixing drum 10.
Preferably, the surface of the carrier roller 41 is made of polyurethane, and the rolling ring 42 is made of steel, so that the friction between the carrier roller 41 and the rolling ring 42 is increased, and the outer side wall of the mixing drum 10 can be protected.
In the embodiment of the present invention, the frame 40 is provided with the catch wheel 43, and the catch wheel 43 abuts against the tail end of the mixing drum 10, so that the mixing drum 10 can be prevented from moving toward the discharge port.
In the feed inlet region, because finished product sand particles and moisture entering the mixing drum 10 are not fully mixed, finished product sand particles, fine particle stone powder and moisture are easily formed in the region and adhered to the wall of the mixing drum 10, along with the accumulation of time, the amount of the fine particle stone powder and the moisture is increased, the diameter of the drum body is reduced, the processing capacity of the wet mixing machine is reduced, and after the material is collected by the material lifting plate, the material lifting effect is poor, so that the mixing uniformity of the finished product sand and the moisture is influenced. If not clear up for a long time, can take place to harden into a piece phenomenon, the clearance degree of difficulty of aggravation later stage, the risk that has the damage barrel is cleared up to gravity. In the first embodiment of the present invention, there is also provided an aggregate automatic cleaning control method for a wetting machine, which is applied to the above-mentioned wetting machine, and as shown in fig. 4, the aggregate automatic cleaning control method for the wetting machine includes the steps of:
step S10: acquiring the feeding state of a finished sand inlet 12 in real time;
step S20: when no material is fed into the finished product sand inlet 12, acquiring the current load of the rotary driving mechanism 30, and judging the aggregate degree of the mixing drum 10 according to the current load;
step S30: the water supply amount of the water supply mechanism 20 is controlled according to the aggregate level.
As the aggregate is more and more, the load is larger, so the current aggregate level of the agitating drum 10 can be judged by judging the current load of the rotary drive mechanism 30. After finished product sand entry 12 does not have the feeding at every turn, the system automatic start gathers materials and judges and the clearance operation, and the degree of gathering materials is low, can not gather materials at every turn and accumulate and form hardening, avoids the serious tempering drum 10 damage risk that gathers materials clearance and probably lead to that hardens.
In the second embodiment of the present invention, the rotary driving mechanism 30 comprises a driving motor 31 and a coupling assembly 32 in transmission connection with the driving motor 31, and as shown in fig. 5, the step of obtaining the current load of the rotary driving mechanism 30 when the finished sand inlet 12 is not fed, and determining the aggregate level of the mixing drum 10 according to the current load comprises:
step S21: obtaining the current load power P of the driving motor 31 1 ；
Step S22: comparing the current load power P 1 And normal load rate P 0 The relationship of (1);
step S23: when (P) 1 -P 0 )/P 0 If the aggregate content is less than or equal to 5 percent, judging that the aggregate content of the mixing drum 10 is light;
step S24: when (P) 1 -P 0 )/P 0 If 100% is greater than 5%, the degree of aggregate in the mixing drum 10 is determined to be severe.
The rotary power of the mixing drum 10 comes from the driving motor 31, and the heavier the mixing drum 10 is, the larger the power which needs to be output by the driving motor 31 is; the controller 60 records a normal load rate P when the mixing drum 10 has no aggregate and no finished sand enters 0 (normal load factor: current at work/rated current 100%), when no finished sand enters the mixing drum 10 from the finished sand inlet 12 after each production of the sand making equipment and is mixed with moisture, the controller 60 records that the load factor of the driving motor 31 at this time is P 1 That is, after the completion of the wet mixing and before the agitation drum 10 stops, it is necessary to determine the condition of the aggregate in the agitation drum 10. The more the mixing drum 10 is filled with more material, the more power is required to drive the motor 31, and the comparison analysis P is carried out 1 -P 0 The weight of the mixing drum 10 can be obtained more than that of the mixing drum without the aggregate, and the aggregate degree of the mixing drum 10 can be judged.
The analysis of aggregate levels by the controller 60 is schematically as follows:
(P 1 -P 0 )/P 0 the aggregate degree of the mixing drum 10 is light at the moment when the aggregate content is less than or equal to 100% and less than or equal to 5%, and the mixing drum can not be cleaned;
(P 1 -P 0 )/P 0 100% > 5% indicates the degree of aggregate in the mixing drum 10 at this timeAnd heavy, the cleaning is required.
According to the invention, before the wet mixer stops and after the equipment stops feeding, the system automatically starts the mixing drum 10 for collecting materials, the condition of collecting materials in the mixing drum 10 can be obtained through the matching relation of the controller 60 and the driving motor 31, the data of the degree of collecting materials is output, manual inspection is avoided, and the degree of automation is high.
In a third embodiment of the present invention, as shown in fig. 6, the step of controlling the water supply amount of the water supply mechanism 20 according to the aggregate level includes:
step S31: when the aggregate degree of the mixing drum 10 is severe, controlling the variable frequency water pump 21 to supply water according to a preset frequency and controlling the flow valve 25 to discharge water according to a preset water supply amount;
step S32: when the water discharging time reaches a first preset time, closing the variable frequency water pump 21 and the flow valve 25;
step S33: after waiting for a second preset time, judging the current aggregate degree of the mixing drum 10 again, and repeating the steps until the current aggregate degree of the mixing drum 10 is slight, and controlling the mixing drum 10 to stop normally.
Wherein the first preset time is 3 minutes, and the second preset time is 30 seconds. Specifically, when the controller 60 analyzes that the stirring cylinder 10 of the wet-mixing machine has more aggregates and needs to be cleaned, the controller 60 sends a signal Q 1 Predetermined water supply amount (Q) 1 The preset water supply quantity is calculated in advance, and is obtained at Q 1 Under the condition of water supply quantity, the water outlet pressure of the water pipe nozzle 24 is higher, the water pipe nozzle can directly impact the cylinder wall of the mixing drum 10, aggregate adhered to the cylinder wall can be dispersed and then is discharged along with the rotation of the mixing drum 10), and the preset water supply quantity Q is set 1 It is big when just normal production, variable frequency water pump 21 increases the delivery and supplies water according to preset frequency to guarantee that flow valve 25 has sufficient water source supply, guarantee the injection water yield and the injection pressure of water pipe shower nozzle 24, guarantee the clearance effect of gathering materials. At flow valve 25 according to Q 1 After water is discharged for 3 minutes according to the preset water supply amount, the inner wall of the mixing drum 10 is cleaned by the large-water-amount jet of the water pipe nozzle 24 for 3 minutes, the flow valve 25 and the variable-frequency water pump 21 are closed, and after standing for 30 seconds, the controller 60 acquires the load current of the driving motor 31 again and then enters into the mixing drumThe aggregate degree of the mixing drum 10 after the first cleaning is judged in one step; when the aggregate degree of the mixing drum 10 is mild, controlling the mixing drum 10 to normally stop; if the aggregate degree of the mixing drum 10 obtained at this time is still severe, secondary aggregate cleaning is performed on the mixing drum 10 again according to the step and the procedure of the primary cleaning, and the mixing drum 10 is stopped until the aggregate degree of the mixing drum 10 reaches mild degree.
After the wet mixing machine is produced every time, the system automatically judges and analyzes the aggregate condition of the mixing drum 10, and selects different actions according to different aggregate degrees, when the aggregate is serious, the cleaning action can be automatically started, the aggregate condition can be cleaned in time, and the wet mixing performance can be ensured when the wet mixing machine is started next time; the aggregate is cleaned in time, and the phenomenon of hardening caused by long-time cleaning failure is prevented.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A humidification machine, comprising:
the stirring cylinder (10) is obliquely arranged, and both ends of the stirring cylinder are respectively provided with a finished product sand inlet (12) and a finished product sand outlet (13);
a rotation driving mechanism (30) which is installed at the bottom of the mixing drum (10) and is used for driving the mixing drum (10) to rotate;
the water supply mechanism (20) is communicated with the stirring cylinder (10) through a water supply pipeline (23) and sprays water into the stirring cylinder (10); and
a controller (60) communicatively coupled to the rotary drive motor (31), the controller (60) being electrically coupled to the water supply mechanism (20) and configured to:
acquiring the feeding state of the finished sand inlet (12) in real time;
when the finished product sand inlet (12) is not fed, acquiring the current load of the rotary driving mechanism (30), and judging the aggregate degree of the mixing drum (10) according to the current load;
controlling the water supply amount of the water supply mechanism (20) according to the aggregate level.
2. The wet mixer according to claim 1, wherein a plurality of material raising plates are arranged on the inner peripheral side wall of the mixing drum (10) at equal intervals along the length direction, and the material raising plates are obliquely connected with the inner wall of the mixing drum (10).
3. The wet mixing machine according to claim 1, wherein the water supply mechanism (20) comprises a water storage tank (22) and a variable frequency water pump, one end of the water supply pipeline (23) extends into the water storage tank (22) and is connected with the variable frequency water pump, the other end of the water supply pipeline vertically penetrates through the side wall of the head end of the mixing drum (10) and is arranged in the mixing drum (10) in an axially extending manner, and a plurality of water pipe spray heads (24) are arranged on the side wall of the water supply pipeline (23) in an outwards protruding manner at intervals along the length direction.
4. The wetter according to claim 3, wherein a flow valve (25) controlling the feed water amount of the water supply pipeline (23) is mounted on a section of the water supply pipeline (23) located outside the mixing drum (10), the controller (60) being electrically connected to the flow valve (25) and further configured to:
acquiring the weight of the finished sand entering from the finished sand inlet (12) in real time;
controlling the opening of a flow valve (25) according to the weight of the finished sand;
and controlling the water supply frequency of the variable-frequency water pump according to the opening degree of the flow valve (25).
5. The wetter according to any of claims 1 to 4, wherein the product sand inlet (12) is located at the head end of the mixing drum (10) and has an opening direction that is inclined upward, and the product sand outlet (13) is located at the tail end of the mixing drum (10) and has an opening direction that is downward.
6. The wet mixer according to any one of claims 1 to 4, characterized in that the outer peripheral wall of the mixing drum (10) is provided with two rolling rings (42), and the two rolling rings (42) are respectively arranged near the head end and the tail end of the mixing drum (10).
7. The wet mixer according to claim 6, further comprising a frame (40) with an inclined surface and used for carrying the mixing drum (10), wherein a plurality of carrier rollers (41) are mounted on the frame (40), the peripheral walls of the carrier rollers (41) are in rolling contact with the outer side walls of the rolling rings (42), the rotary driving mechanism (30) comprises a driving motor (31) and a coupling assembly (32) in transmission connection with the driving motor (31), and the driving motor (31) is connected with the carrier rollers (41) through the coupling assembly (32) and used for driving the carrier rollers (41) to rotate.
8. The wet mixer according to claim 7, wherein the surface of the carrier roller (41) is made of polyurethane.
9. The wet mixer according to claim 7, characterized in that a catch wheel (43) is arranged on the frame (40), the catch wheel (43) abutting against the rear end of the mixing drum (10).
10. An automatic aggregate cleaning control method of a wet-mixing machine, which is applied to the wet-mixing machine according to any one of claims 1 to 9, and comprises the following steps:
acquiring the feeding state of the finished sand inlet (12) in real time;
when the finished product sand inlet (12) is not fed, acquiring the current load of the rotary driving mechanism (30), and judging the aggregate degree of the mixing drum (10) according to the current load;
controlling the water supply amount of the water supply mechanism (20) according to the aggregate level.
11. The aggregate automatic cleaning control method of the wet mixer according to claim 10, wherein the rotary driving mechanism (30) comprises a driving motor (31) and a coupling assembly (32) in transmission connection with the driving motor (31), and the step of obtaining the current load of the rotary driving mechanism (30) when the finished sand inlet (12) is not fed and judging the aggregate level of the mixing drum (10) according to the current load comprises the following steps:
obtaining the current load power P of the driving motor (31) 1 ；
Comparing the current load power P 1 And normal load rate P 0 The relationship of (1);
when (P) 1 -P 0 )/P 0 Judging the degree of aggregate of the mixing drum (10) to be light when the aggregate content is less than or equal to 5 percent by 100 percent;
when (P) 1 -P 0 )/P 0 And if 100% is more than 5%, judging that the aggregate degree of the mixing drum (10) is heavy.
12. The aggregate automatic cleaning control method of the damping machine according to claim 11, wherein the step of controlling the water supply amount of the water supply means (20) according to the aggregate level comprises:
when the aggregate degree of the mixing drum (10) is severe, controlling the variable frequency water pump to supply water according to a preset frequency and controlling the flow valve (25) to discharge water according to a preset water supply quantity;
when the water discharging time reaches a first preset time, closing the variable frequency water pump and the flow valve (25);
after waiting for a second preset time, judging the current aggregate degree of the mixing drum (10) again, and repeating the steps until the current aggregate degree of the mixing drum (10) is light, and controlling the mixing drum (10) to normally stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210324368.8A CN114797588A (en) | 2022-03-29 | 2022-03-29 | Wet mixing machine and automatic aggregate cleaning control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210324368.8A CN114797588A (en) | 2022-03-29 | 2022-03-29 | Wet mixing machine and automatic aggregate cleaning control method thereof |
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| CN113103436A (en) * | 2021-04-13 | 2021-07-13 | 三一汽车制造有限公司 | Accumulated material detection method, electronic equipment and mixer truck |
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2022
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| CN106272977A (en) * | 2015-05-22 | 2017-01-04 | 中联重科股份有限公司 | Sand material humidification system and method |
| CN206106097U (en) * | 2016-10-28 | 2017-04-19 | 邵海东 | Automatically cleaning mixer for construction |
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Application publication date: 20220729 |