CN114053941A - Mixing machine with caking removal function and mixing machine control method - Google Patents
Mixing machine with caking removal function and mixing machine control method Download PDFInfo
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- CN114053941A CN114053941A CN202010789012.2A CN202010789012A CN114053941A CN 114053941 A CN114053941 A CN 114053941A CN 202010789012 A CN202010789012 A CN 202010789012A CN 114053941 A CN114053941 A CN 114053941A
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- 238000002156 mixing Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 45
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- 239000000463 material Substances 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 20
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 7
- 239000007921 spray Substances 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
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- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000009931 harmful effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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Abstract
The invention discloses a mixing machine with a caking removal function and a mixing machine control method, wherein the mixing machine comprises a mixing barrel (3), a stirring paddle (2) arranged in the mixing barrel (3) and a mixing barrel driving mechanism (6), a fixed scraper (4) or a rotary scraper is arranged in the mixing barrel (3) at a position close to the barrel wall, the mixing machine further comprises a movable scraper (5), a driving mechanism and a transmission mechanism thereof, the driving mechanism is in transmission connection with the movable scraper (5) through the transmission mechanism so as to drive the movable scraper (5) to move up and down, the movable scraper (5) upwards withdraws from the mixing barrel (3) during normal production, and the movable scraper (5) downwards extends into the mixing barrel (3) during caking removal. The caking removing function of the mixer can effectively remove the caking of the sticky materials formed in the operation process of the mixer, thereby improving the operation rate of equipment and reducing the operation cost.
Description
Technical Field
The invention relates to the technical field of bulk material mixing, in particular to a mixer capable of removing agglomerates. The invention also relates to a method for controlling said mixer to remove lumps.
Background
In the industries of metallurgy, mining and the like, the uniform mixing of bulk materials is an important process in the field of raw material preparation. The vertical intensive mixer is main equipment for uniformly mixing multi-component bulk materials, and realizes efficient uniform mixing of the materials by means of rotation of the stirring paddle and the barrel body.
In the process of mixing the sintering and pelletizing raw materials, due to the existence of centrifugal force, the mixture with certain viscosity can be gradually adhered to the inner wall of the barrel body, and an adhesion layer is gradually thickened along with the lapse of time to form a hard and heavy caking layer. The existence on knot layer, cause the mixer inner space to reduce on the one hand, influence the mixing effect, thereby bring harmful effects for follow-up technology, influence the quality in finished product ore deposit when serious, on the other hand has also increased the roll weight of mixing the machine staving, motor load and power consumption have been increaseed, cause the energy extravagant, more importantly the knot layer can aggravate the wearing and tearing to the stirring rake, if not clear away for a long time, the thickness and the hardness on knot layer will continue to develop, and then influence the normal work of stirring rake.
The traditional method for controlling and removing the caking layer is to install a fixed scraper on the inner side of the barrel wall, and the scraper is fixed on a support frame and has a certain gap with the barrel wall, so that the scraper cannot completely remove the caking layer on the barrel wall, and only can ensure that the caking layer on the barrel wall cannot touch a stirring paddle; in addition, the scraper is seriously worn after being used for a long time, and the machine needs to be stopped to manually remove a caking layer between the barrel wall and the scraper, so that the operation rate of equipment and the stability of the process are seriously influenced.
Although the knot layer can be broken through the rotary scraper, the breaking efficiency of the knot layer is improved, the knot layer on the barrel wall cannot be thoroughly cleared, and manual clearing is needed.
In addition, because the knot layer is in the mixing barrel, the thickness and the hardness of the knot layer can not be observed and measured, and the knot layer can only be removed at regular time but not as required, so that the waste of manpower and material resources is easily caused.
Disclosure of Invention
The invention aims to provide a mixer with a lump removing function. The caking removing function of the mixer can effectively remove the caking of the sticky materials formed in the operation process of the mixer, thereby improving the operation rate of equipment and reducing the operation cost.
Another object of the present invention is to provide a method for controlling a mixer to remove lumps.
In order to achieve the purpose, the invention provides a mixer with a caking removal function, which comprises a mixing barrel, a stirring paddle and a mixing barrel driving mechanism, wherein the stirring paddle and the mixing barrel driving mechanism are arranged in the mixing barrel, a fixed scraper or a rotary scraper is arranged in the mixing barrel and is close to the barrel wall, the mixer further comprises a movable scraper, a driving mechanism of the movable scraper and a transmission mechanism of the movable scraper, the driving mechanism is in transmission connection with the movable scraper through the transmission mechanism so as to drive the movable scraper to move up and down, the movable scraper upwards withdraws from the mixing barrel during normal production, and the movable scraper downwards extends into the mixing barrel during caking removal.
As a further supplement to the above technical solution, one or more of the following settings may also be made for corresponding technical features in the above technical solution:
the driving mechanism comprises a driving motor, the transmission mechanism comprises a pin wheel and pin teeth, the pin wheel is arranged at the power output end of the driving motor, the pin teeth are arranged on the movable scraper at intervals along the longitudinal direction, and the pin wheel is in meshing transmission with the pin teeth; or,
the driving mechanism comprises a driving motor, the transmission mechanism comprises a gear and a rack, the gear is arranged at the power output end of the driving motor, the rack is arranged in the longitudinal direction of the movable scraper, and the gear and the rack are meshed for transmission.
Further comprising a guide mechanism for guiding the movable scraper to move up and down.
The guide mechanism comprises a guide rail which is in up-and-down sliding fit with the movable scraper; or,
the guide mechanism comprises an upper guide roller and a lower guide roller which are in rolling sliding fit with the movable scraper; the movable scraper is arranged on the upper guide roller, the number of the upper guide rollers is at least two, the movable scraper is clamped and guided, and the number of the lower guide rollers is at least two, and the movable scraper is clamped and guided.
The fixed scraper is fixed on the support frame, suspended in the air and extended into the mixing barrel, and arranged along the axis direction.
An airflow channel is arranged in the movable scraper, and a plurality of high-pressure spray holes communicated with the airflow channel are formed in one side, facing the barrel wall, of the movable scraper so as to spray impact jet to break up a caking layer on the barrel wall.
The spraying direction of the high-pressure spray holes faces to the obliquely lower side, and an included angle smaller than 90 degrees is formed between the high-pressure spray holes and the barrel wall of the mixing barrel.
The movable scraper is provided with an air pressure adjusting device for adjusting the pressure of the compressed air in the air flow channel.
The air pressure adjusting device is configured to make the air pressure not less than 0.5 MPa.
During normal production, the lower end of the movable scraper is located at a position above the maximum allowable material filling height h and below the barrel cover, and when the caking is removed, the movable scraper extends into the mixing barrel and is located at a position which is about 2mm away from the bottom.
When the agglomeration is removed, the movable scraper moves up and down circularly in a set range.
Further comprises a deformation detection device and a controller; the deformation detection device is arranged on the fixed scraper so as to obtain the current strain value of the fixed scraper in real time; the deformation detection device is connected with the controller in a signal transmission mode so as to transmit the acquired strain value to the controller in real time, and therefore the controller judges the thickness and the hardness of the knot layer according to the strain value of the deformation of the fixed scraper.
The deformation detection device adopts an arched strain gauge.
In order to achieve the above another object, the present invention also provides a mixer control method for controlling the mixer with lump removal function as set forth in any one of the above, including:
s01, the movable scraper returns to the initial position;
s02, starting the mixer to run;
s03, acquiring a strain value B of the deformation detection position of the fixed scraper in real time and transmitting the strain value B to a controller;
s04, the controller compares the strain value B with a threshold value A, the threshold value A is a set elastic strain value of the deformation detection position of the fixed scraper, and the elastic strain value enables the deformation of the fixed scraper to be controlled within an elastic deformation range so that the fixed scraper can recover the initial state after the caked layer is removed;
if B is less than A, continuously acquiring a strain value B at the detection position of the fixed scraper; if B is larger than A, stopping feeding of the mixer, after the materials in the mixing barrel are discharged, extending the movable scraper into the mixing barrel, and removing the caking layer;
and S05, acquiring a strain value B of the detection position of the fixed scraper in real time, continuing to operate for 3-5 min after the strain value B is recovered to 0, returning the movable scraper to the initial position at the moment, starting feeding of the mixer, and recovering normal production.
Further, if the mixer is shut down accidentally during the operation, the step S01 is executed after the materials in the mixing barrel are manually removed; if the movable blade is accidentally stopped while the knot layer is being removed, step S05 is continued after the power-on.
The mixer with the caking removal function provided by the invention is provided with the movable scraper besides the fixed scraper or the rotary scraper at the position close to the barrel wall, the driving mechanism can drive the movable scraper to extend into or withdraw from the mixing barrel through the transmission mechanism, so that the movable scraper upwards withdraws from the mixing barrel during normal production, the movable scraper downwards extends into the mixing barrel during caking removal, and the caking of the sticky materials formed in the operation process of the mixer can be effectively removed through the matching use of the fixed scraper or the rotary scraper and the movable scraper, various defects existing in the caking removal by only depending on the fixed scraper or the rotary scraper are overcome, the equipment operation rate can be obviously improved, the operation cost is reduced, the structure is simple, the operation is stable, and the reliability is high.
The mixer control method provided by the invention is used for controlling the mixer with the caking removal function, and the mixer with the caking removal function has the technical effects, so the mixer control method can realize automatic control and also has corresponding technical effects.
Drawings
FIG. 1 is a schematic structural diagram of a mixer with lump removing function according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a top view of the mixer with lump removal function shown in FIG. 1;
fig. 4 is a schematic view of the movable scraper extending into the mixing barrel.
In the figure:
1. support frame 2, stirring paddle 3, mixing drum 4, fixed scraper 5, movable scraper 6, mixing drum driving mechanism 7, driving wheel 8, gear ring 9, gear 10, sealing element 11, driving motor 12, pin wheel 13, pin teeth 14, upper guide roller 15, lower guide roller 16, mounting plate 17, airflow channel 18, high-pressure spray hole 19, air pressure regulating device 20, bow-shaped strain gauge 21 and caking
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a mixer with lump removing function according to an embodiment of the present invention; fig. 2 is a partially enlarged view of fig. 1.
As shown in the drawings, in an embodiment, the mixer with the lump removing function provided by the invention mainly comprises a support frame 1, a stirring paddle 2, a mixing barrel 3, a fixed scraper 4, a movable scraper 5, a mixing barrel driving mechanism 6 and the like.
The bottom and the base of blending bin 3 rotate to be connected through transmission part and 6 transmissions of blending bin actuating mechanism, when stirring rake 2 stirs through rotating, blending bin actuating mechanism 6 drives blending bin 3 and carries out reverse rotation simultaneously, in order to improve mixing efficiency.
The mixing barrel 3 shown in the figure is provided with a gear ring 8 at the bottom, the mixing barrel driving mechanism 6 is a motor, the output shaft of the motor drives the gear 9 to rotate after a series of transmissions such as speed reduction, the gear 9 is meshed with the gear ring 8 at one side of the gear ring 8, and the mixing barrel driving mechanism 6 drives the gear ring 8 to rotate through the gear 9, so as to drive the mixing barrel 3 to rotate.
The mixing tub 3 is provided with a circumferential seal 10 at the rim of the bung at the top and is sealed to the inner top surface of the top member by the seal 10.
The sealing member 10 may be an annular rubber sealing sleeve, which is fixedly connected to the upper edge of the barrel opening of the mixing barrel 3 through a connecting member, and exceeds the upper edge of the barrel opening of the mixing barrel 3 by a certain distance, and may be located outside the mixing barrel 3 or inside the mixing barrel 3.
The fixed scraper 4 is fixed on the support frame 1, suspended in the air, extends into the mixing barrel 3, is arranged along the axis direction, is positioned close to the barrel wall of the mixing barrel 3, and keeps a certain distance from the barrel wall of the mixing barrel 3. When the mixing barrel 3 rotates, the fixed scraper 4 removes the caking layer on the barrel wall, so that the caking layer is controlled within a certain thickness in a certain time.
Referring to fig. 3 together, fig. 3 is a top view of the mixer with lump removing function shown in fig. 1.
As shown in the figure, the driving mechanism of the movable scraper 5 is a driving motor 11, the driving mechanism mainly comprises a pin wheel 12 and pin teeth 13, the pin wheel 12 is arranged at the power output end of the driving motor 11, the pin teeth 13 are arranged at the side of the movable scraper 5, which is opposite to the inner wall of the mixing barrel, at intervals along the longitudinal direction, each pin tooth 13 is in the shape of a roller shaft and can be designed into a free rotating form, and the distance between two adjacent pin teeth 13 is matched with the tooth width of the pin wheel 12, so that the pin wheel 12 can be meshed with the pin teeth 13 for transmission.
In order to ensure that the movable scraper 5 can move up and down stably, a guide mechanism is further arranged. The guide mechanism is provided with an upper guide roller 14 and a lower guide roller 15 which are in rolling sliding fit with the movable scraper 5; the number of the upper guide rollers 14 is two, and the two upper guide rollers 14 sandwich the movable blade 5 to guide the movable blade 5 in a sandwiched manner, and similarly, the number of the lower guide rollers 15 is also two, and the two lower guide rollers 15 sandwich the movable blade 5 to guide the movable blade 5 in a sandwiched manner. The upper guide roller 14 and the lower guide roller 15 are installed between two installation plates 16 arranged at intervals, both ends of the upper guide roller 14 and the lower guide roller 15 are provided with radial edges to restrict the movable blade 5 from moving axially, the movable blade 5 is held at an accurate position in the axial direction, and the movable blade 5 can move up and down smoothly without offset under the guiding action of the upper guide roller 14 and the lower guide roller 15.
In order to further improve the efficiency of removing the agglomerates, an airflow channel 17 is arranged inside the movable scraper 5, a plurality of high-pressure spray holes 18 communicated with the airflow channel 17 are arranged on one side, facing the barrel wall, of the movable scraper 5, when the agglomerates are removed, high-pressure air is introduced into the airflow channel 17, and after the high-pressure air is sprayed out from the high-pressure spray holes 18, impact jet flow is formed so as to break away the agglomerate layer on the barrel wall.
Specifically, the jetting direction of the high-pressure jet holes 18 is directed obliquely downward, and has an angle of less than 90 ° with the barrel wall of the mixing barrel 3, and the angle shown in the drawing is 45 °. Of course, other angles than 45 ° may be designed to be 30 ° or 60 °, or an angle between one part of the high-pressure spray holes 18 and the barrel wall of the mixing barrel 3 is 45 °, and an angle between the other part of the high-pressure spray holes 18 and the barrel wall of the mixing barrel 3 is other angles.
The upper end of the movable blade 5 is provided with an air pressure adjusting device 19 for adjusting the pressure of the compressed air in the air flow passage 17. In general, in order to ensure the purging effect, the air pressure in the air flow passage 17 after adjustment by the air pressure adjusting device 19 is not less than 0.5 MPa.
During normal production, the movable scraper 5 is positioned above the maximum allowable filling height h of the material and below the barrel cover (initial position), and the high-pressure spray holes 18 on the scraper stop spraying gas; along with the increase of operation time, the barrel wall caking layer can be more knot thicker, leads to fixed scraper 4 to take place to warp, needs to clear away the caking layer this moment, then the feeding system stops to mix the machine and supplies to after the material discharge in the blending barrel 3, portable scraper 5 stretches into the blending barrel inside and approximately 2mm position department from the bottom, begins to jet high-pressure gas and breaks away the caking layer.
Considering that the high-pressure micropore jet flow only removes the caking in a certain specific area, the movable scraper 5 moves up and down circularly in a certain range, so that the local caking layer on the barrel wall is prevented from being broken, and the complete breaking and cleaning of the caking layer are realized. When the unexpected shut down appears in the mixer, need the manual work to clear away the interior material of blending bin, but portable scraper 5 stretches into the blending bin inside simultaneously and begins to spray high-pressure gas from the about 2mm position department in bottom and breaks away the caking layer, treats the caking layer and breaks the back, restart mixer work.
In other embodiments, a deformation detection device and a controller are further provided to determine when the movable blade 5 is performing the removal of the nodule layer. The deformation detection device can adopt an arched strain gauge 20, and is arranged at the root of the fixed scraper 4 and faces one side of the barrel wall so as to obtain the current strain value of the fixed scraper 4 in real time; bow-shaped foil gage 20 is connected with the controller with the mode that can the transmission signal to send the strain value who obtains for the controller in real time, thereby judge the thickness and the hardness of caking layer by the strain value that the controller warp according to fixed scraper 4, and then confirm whether need use portable scraper 5 to clear away the caking, realize automatic clear-up, improve equipment operation rate, reduce maintenance time and cost.
The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, the fixed blade 4 is replaced with a rotary blade, or a gear and a rack are used to replace the pin wheel 12 and the pin teeth 13 for transmission, the rotary motion of the driving motor 11 is converted into up-and-down linear motion, or a slide rail is used to replace a guide roller for guiding the movable blade 5, and so on. This is not illustrated here, since many implementations are possible.
In addition to the above-described mixer having the lump removing function, the present invention provides a mixer control method for controlling the above-described mixer, comprising:
s01, the movable blade 5 returns to the initial position.
S02, start the mixer to run.
And S03, acquiring the strain value B of the deformation detection position of the fixed scraper in real time by the bow-shaped strain gauge 20, and transmitting the strain value B to the controller.
S04, the controller compares the variance value B with a threshold value A.
The threshold value a is an elastic strain value of a deformation detection position of the fixed scraper 4, and according to the elastic mechanics knowledge, the deformation of the fixed scraper 4 is controlled within an elastic deformation range by the elastic strain value, so that the fixed scraper 4 can recover to an initial state after the caked layer is removed.
Specifically, the maximum elastic strain value at the fixed blade bow strain gauge 20 may be mentioned, for example, if the fixed blade 1 is made of Q345, a may be 0.001267.
If B is less than A, continuously acquiring a strain value B at the detection position of the fixed scraper 4; if B is larger than A, the mixer stops feeding, and after the materials in the mixing barrel 3 are discharged, the movable scraper 5 extends into the mixing barrel 3 to remove the caking layer.
And S05, acquiring a strain value B of the detection position of the fixed scraper by the arched strain gauge 20 in real time, continuing to operate for 3-5 min after the strain value B is recovered to 0, returning the movable scraper 5 to the initial position at the moment, starting feeding by the mixer, and recovering normal production.
S06: if the mixer is shut down accidentally during the operation, the step S01 is executed after the materials in the mixing barrel are manually removed.
S06: if the movable blade 5 is unexpectedly stopped while removing the lump layer, the step S05 is continuously performed after the power-on.
The mixer and the control method can effectively remove the sticky material caking formed in the operation process of the mixer, overcome various defects existing in the technical means of simply removing the caking by the fixed scraper or the rotary scraper and the like, not only can obviously improve the operation rate of equipment and reduce the operation cost, but also have simple structure, stable operation and high reliability.
The mixer having the lump removing function and the mixer control method according to the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (15)
1. Mix machine with caking clearance function, include mixing drum (3), locate stirring rake (2) and mixing drum actuating mechanism (6) in mixing drum (3), the position that is close the bucket wall in mixing drum (3) is equipped with fixed scraper (4) or rotatory scraper, its characterized in that further includes portable scraper (5) and actuating mechanism and drive mechanism, actuating mechanism pass through drive mechanism with portable scraper (5) transmission is connected, in order to drive portable scraper (5) reciprocate, when normal production, portable scraper (5) upwards withdraw from mixing drum (3), when cleaing away the caking, portable scraper (5) stretch into downwards mixing drum (3).
2. The mixing machine with lump-removing function as set forth in claim 1, wherein said drive mechanism comprises a drive motor (11), said transmission mechanism comprises a pin wheel (12) and a pin tooth (13), said pin wheel (12) is provided at a power output end of said drive motor (11), said pin tooth (13) is provided at said movable scraper (5) at a distance in a longitudinal direction, said pin wheel (12) is in meshing transmission with said pin tooth (13); or,
the driving mechanism comprises a driving motor (11), the transmission mechanism comprises a gear and a rack, the gear is arranged at the power output end of the driving motor (11), the rack is arranged in the longitudinal direction of the movable scraper (5), and the gear and the rack are meshed for transmission.
3. The mixing machine with lump-removing function as set forth in claim 1, further comprising a guide mechanism for guiding the movable blade (5) up and down.
4. The mixing machine with lump-removing function as set forth in claim 3, wherein said guide means comprises a guide rail slidably engaged with said movable blade (5) up and down; or,
the guide mechanism comprises an upper guide roller (14) and a lower guide roller (15) which are in rolling sliding fit with the movable scraper (5); the number of the upper guide rollers (14) is at least two and the movable scraper (5) is clamped and guided, and the number of the lower guide rollers (15) is at least two and the movable scraper (5) is clamped and guided.
5. The mixing machine with lump-removing function as claimed in claim 1, wherein said fixed scraper (4) is fixed on the support frame (1), suspended into the mixing tub (3), and arranged along the axial direction.
6. The mixer with lump-removing function as set forth in claim 1, wherein the movable scraper (5) is internally provided with an air flow channel (17), and the side of the movable scraper (5) facing the tub wall is provided with a plurality of high-pressure jet holes (18) communicating with the air flow channel (17) to jet impact jets to break up the lump layer on the tub wall.
7. The mixer with lump-removing function as set forth in claim 6, wherein the jetting direction of the high-pressure jet holes (18) is directed obliquely downward with an angle of less than 90 ° with the barrel wall of the mixing barrel (3).
8. The mixing machine with lump-removing function as claimed in claim 6, wherein said movable blade (5) is provided with an air pressure adjusting means (19) for adjusting the pressure of the compressed air in said air flow channel (17).
9. The mixing machine with lump-removing function as set forth in claim 8, wherein the air pressure adjusting means (19) is configured to make the air pressure not less than 0.5 MPa.
10. The mixing machine with lump-removing function as set forth in claim 1, wherein the lower end of the movable scraper (5) is located above the maximum allowable filling height h of the material and below the lid of the drum during normal production, and the movable scraper (5) protrudes into the interior of the mixing tub (3) at a position about 2mm from the bottom during lump removal.
11. The mixer with lump-removing function as set forth in claim 1, wherein the movable blade (5) is circularly moved up and down within a set range while removing the lump.
12. The mixing machine with lump removal capability of claim 1, further comprising a deformation detecting device and a controller; the deformation detection device is arranged on the fixed scraper (4) so as to obtain the current strain value of the fixed scraper (4) in real time; the deformation detection device is connected with the controller in a mode capable of transmitting signals so as to transmit the acquired strain value to the controller in real time, and therefore the controller judges the thickness and the hardness of the nodule layer according to the strain value of the deformation of the fixed scraper (4).
13. The mixing machine with lump-removing function as set forth in claim 12, wherein said deformation detecting means employs an arcuate strain gauge (20).
14. A mixer control method for controlling the mixer with lump removal capability of any one of claims 1 to 13, comprising:
s01, the movable scraper (5) returns to the initial position;
s02, starting the mixer to run;
s03, acquiring a strain value B of the deformation detection position of the fixed scraper (4) in real time and transmitting the strain value B to a controller;
s04, the controller compares the strain value B with a threshold value A, the threshold value A is a set elastic strain value of the deformation detection position of the fixed scraper (4), and the elastic strain value enables the deformation of the fixed scraper (4) to be controlled within an elastic deformation range so that the fixed scraper (4) can recover the initial state after the caked layer is removed;
if B is less than A, continuously acquiring a strain value B at the detection position of the fixed scraper (4); if B is larger than A, stopping feeding of the mixer, after the materials in the mixing barrel (3) are discharged, extending the movable scraper (5) into the mixing barrel (3) to remove the caking layer;
and S05, acquiring a strain value B of the detection position of the fixed scraper (4) in real time, continuing to operate for 3-5 min after the strain value B is recovered to 0, returning the movable scraper (5) to the initial position at the moment, starting feeding by the mixer, and recovering normal production.
15. The method of controlling a mixing machine according to claim 14, wherein if the mixing machine is accidentally stopped during operation, the step S01 is performed after the materials in the mixing tub are manually removed; if the movable scraper (5) is stopped accidentally while removing the junction layer, the step S05 is continued after the startup.
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| CN202010789012.2A CN114053941A (en) | 2020-08-07 | 2020-08-07 | Mixing machine with caking removal function and mixing machine control method |
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| CN109569412A (en) * | 2019-01-02 | 2019-04-05 | 中冶长天国际工程有限责任公司 | A kind of mixing apparatus and its material-clearing device |
| CN109621823A (en) * | 2019-01-02 | 2019-04-16 | 中冶长天国际工程有限责任公司 | A kind of mixing apparatus and its material-clearing device |
| CN210496155U (en) * | 2019-04-11 | 2020-05-12 | 中冶长天国际工程有限责任公司 | Get rid of cleaning device of caking in mixer and mixer thereof |
| CN210934686U (en) * | 2019-11-15 | 2020-07-07 | 蕉岭金鹏精细化工有限公司 | Calcium carbonate agitating unit |
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| CN104785144A (en) * | 2014-01-22 | 2015-07-22 | 中冶长天国际工程有限责任公司 | Powerful mixer |
| CN207628349U (en) * | 2017-11-22 | 2018-07-20 | 中冶长天国际工程有限责任公司 | A kind of vertical mixer |
| CN107804682A (en) * | 2017-11-23 | 2018-03-16 | 神雾科技集团股份有限公司 | A kind of arc covers board-like carrier bar Weighing feeder and Weighing method |
| CN109569412A (en) * | 2019-01-02 | 2019-04-05 | 中冶长天国际工程有限责任公司 | A kind of mixing apparatus and its material-clearing device |
| CN109621823A (en) * | 2019-01-02 | 2019-04-16 | 中冶长天国际工程有限责任公司 | A kind of mixing apparatus and its material-clearing device |
| CN210496155U (en) * | 2019-04-11 | 2020-05-12 | 中冶长天国际工程有限责任公司 | Get rid of cleaning device of caking in mixer and mixer thereof |
| CN210934686U (en) * | 2019-11-15 | 2020-07-07 | 蕉岭金鹏精细化工有限公司 | Calcium carbonate agitating unit |
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