CN109201480B - Sand making sorting equipment - Google Patents
Sand making sorting equipment Download PDFInfo
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- CN109201480B CN109201480B CN201811009401.8A CN201811009401A CN109201480B CN 109201480 B CN109201480 B CN 109201480B CN 201811009401 A CN201811009401 A CN 201811009401A CN 109201480 B CN109201480 B CN 109201480B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/04—Control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a sand making sorting device, which separates sand grains by adopting a dynamic analysis method, breaks through the conventional sand and stone sorting theory of open-air washing, has simple configuration and small investment, can greatly improve the sorting yield and the product grade, has reasonable internal structure, good sorting effect, obvious energy-saving effect, reduces dust emission and reaches the environmental protection standard; can be combined with various milling devices such as a ball mill, a Raymond mill, an impact mill, an air flow mill and the like to form a closed-circuit or open-circuit system.
Description
Technical Field
The invention relates to the field of sand and stone separation, in particular to sand making and separating equipment.
Background
At present, the demand of industries such as food, building materials, chemical industry, metallurgy, refractory materials and the like for various fine powder materials is increasing day by day, and equipment for processing the fine powder materials is various, such as a ball mill, an air flow mill, a Raymond mill, a super grit crusher, a double-roller crusher, a claw type crusher, various hammer piece crushers and the like which are commonly used at present. The crushed sand and stone have wider particle size distribution, the large and small particles are adhered together to form hard agglomeration, and the particle shapes are semi-self-shaped and amorphous. Because of different use modes and purposes, the gravels still need to be further separated after being crushed, and the methods commonly used in the industry at present, such as gravity settling classification, overflow classification, centrifugal classification and the like, have the problems of low classification efficiency, wide distribution of product particle sizes and the like, and can not meet the market demand. How to carry out not only high efficiency but also meticulous grading to the grit has become the technological problem that the industry is urgently needed to solve.
Disclosure of Invention
In order to solve the technical problem, the invention provides sand making and sorting equipment.
The invention is realized by the following technical scheme:
the utility model provides a system sand sorting unit, system sand sorting unit includes the feed inlet, the inlet pipe, the piston rod, parallelly connected excitation platform, hierarchical sucking disc, the solenoid valve, the air pump, the gas circuit pipeline, the material collecting chamber arranges the material pipe, retrieves the room, PLC, position sensor, hierarchical sucking disc still includes sucking disc body and suction hole, the induction port is evenly distributed in the inside of sucking disc body in array, and the entry of all induction ports all is located the lower surface of sucking disc body, and the gas outlet of the sucking disc body upper end that all the exports of all induction ports all converge is connected with the gas circuit pipeline, equipment adopts PC + PLC's servo control system.
Furthermore, the feed inlet is connected with the feed pipe, is positioned in the middle of the feed pipe and is used for feeding sandstone raw materials; the tail end of the feeding pipe is provided with a piston rod, the piston rod is used for pushing the sandstone raw material into the parallel excitation table through the feeding pipe, and the front end of the feeding pipe is flexibly connected with the parallel excitation table; a grading sucker is arranged above the parallel excitation table, the grading sucker completely covers the parallel excitation table, but the grading sucker is not in direct contact with the parallel excitation table, a specific gap value is reserved between the grading sucker and the parallel excitation table, and the gap value in the height direction is adjustable; the outlet of the sand-stone classification is connected to the material collecting chamber through a gas path pipeline, and the gas path pipeline is provided with an electromagnetic valve and an air pump; a discharge pipe is arranged at the right end of the parallel excitation platform, and the parallel excitation platform is flexibly connected with the discharge pipe; the tail end of the discharge pipe is connected with a recovery chamber.
Further, the piston rod, the three driving motors of the parallel excitation table, the electromagnetic valve, the air pump and the position sensor are all controlled by a PLC controller, the PLC communicates with a PC upper computer through an R232 serial port, and the working flow of the equipment is as follows:
after the equipment is powered on, a control system is initialized, and a position sensor and an electromagnetic valve are set;
adding sandstone raw materials through a feeding hole, then entering a feeding pipe, starting a piston rod, pushing the sandstone raw materials into the parallel excitation table, detecting whether feeding is finished, and if not, continuing to work by the piston rod until all the sandstone raw materials are pushed into the parallel excitation table;
selecting the types of the sand and stone particles, the granularity range to be sorted, the pumping time and other parameters on a PC upper computer, and automatically matching the parameters of the vibration excitation frequency and direction of the parallel vibration excitation table, the pumping speed of the air pump and the like by software;
clicking a start button on PC upper computer software, starting the parallel excitation table, starting the stepping motors of the three branch chains to run according to specified frequency and direction parameters, feeding the acquired actual vibration frequency and direction back to the PC upper computer by the position sensor to be compared with the set parameters, and gradually increasing the power of the motors until the set excitation frequency, amplitude and direction are reached. At the moment, the needed sandstone particles are in an excited state under the excitation of the excitation table, overcome the self gravity and are in a suspended state;
opening the electromagnetic valve, starting the air pump, working according to the air pumping speed given by the PC upper computer, pumping the sandstone particles in an excited state by the air pump, entering the grading sucker through an air suction port of the grading sucker, converging the sandstone particles into an air outlet at the upper end of the sucker body, passing through a pipeline, and finally entering the material collecting chamber;
after the sand and stone separation is finished, the vibration of the vibration exciting table is stopped, the vibration exciting table begins to incline towards the discharge pipe at the right end, and the residual materials are conveyed into the recovery chamber for further treatment.
Furthermore, the parallel excitation platform comprises a movable platform, a static platform and 3 single open chains I, II and III, and the parallel excitation platform also comprises a specific topological structure.
Further, the specific topological structure is 2-PRU + CRCR, the structure of the single-split chain I (P1 ≠ R1-U1) is equivalent to P1 ≠ R1 | _ R1, the structural arrangement of the single-split chain iii is the same as I, the kinematic chain structure thereof (P1 | _ R1-U1) is equivalent to P1 | _ R1 | _ R1 |, and the two single-split chains are coplanar, the single-split chain ii structure (C1 | _ R1 | _ R1 |, the moving pair P1, P1.
The invention has the beneficial effects that:
the invention provides sand making and sorting equipment, which utilizes a parallel excitation table with multidimensional vibration to vibrate sandstone raw materials to an excited state, and then utilizes an intelligent suction system to suck the sandstone to be sorted into a material collection chamber, thereby greatly reducing the granularity range of the sandstone.
The invention also provides a brand new sand and stone grading technology, solves the problems of low grading efficiency, wide product particle size distribution and the like of common methods in the industry, and realizes efficient and fine grading.
The invention can independently complete the operation of sand sorting, can be butted with various existing sand crushing devices, and has simple and efficient butting method; and the load capacity of the equipment is wide in range, so that the equipment can be used for both laboratory work and actual industrial production, and has high flexibility.
According to the invention, under the regulation and control of the PLC intelligent control system, all links are mutually matched, the automation degree is high, the operation is simple, the sand and stone grading efficiency is high, and the labor intensity of personnel is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a sand making sorting device provided in this embodiment;
fig. 2 is a schematic structural diagram of a parallel excitation stage provided in this embodiment;
FIG. 3 is a schematic structural diagram of the stage chuck provided in this embodiment;
fig. 4 is a schematic diagram of a PLC overall framework of the sand-making sorting apparatus provided in the present embodiment;
fig. 5 is a schematic diagram of a PLC workflow of the sand-making sorting apparatus provided in this embodiment;
wherein: 1-a feed inlet, 2-a feed pipe, 3-a piston rod, 4-a parallel excitation platform, 5-a grading sucker, 6-an electromagnetic valve, 7-an air pump, 8-an air channel pipeline, 9-a material collecting chamber, 10-a material discharging pipe, 11-a recovery chamber, 12-a position sensor, 13-PLC, 41-a static platform, 42-a movable platform, I-a single open chain I, II-a single open chain II, III-a single open chain III, 51-an air suction hole and 52-a sucker body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1:
a sand making sorting apparatus, as shown in fig. 1, comprising: the device comprises a feed inlet 1, a feed pipe 2, a piston rod 3, a parallel excitation platform 4, a grading sucker 5, an electromagnetic valve 6, an air pump 7, an air path pipeline 8, a material collection chamber 9, a discharge pipe 10, a recovery chamber 11, a PLC13 and a position sensor 12. The feed inlet is connected with the feed pipe, is positioned in the middle of the feed pipe and is used for feeding sandstone raw materials; the tail end of the feeding pipe is provided with a piston rod, the piston rod is used for pushing the sandstone raw material into the parallel excitation table through the feeding pipe, and the front end of the feeding pipe is flexibly connected with the parallel excitation table; a grading sucker is arranged above the parallel excitation table, the grading sucker completely covers the parallel excitation table, but the grading sucker is not in direct contact with the parallel excitation table, a specific gap value is reserved between the grading sucker and the parallel excitation table, and the gap value in the height direction is adjustable; the outlet of the sand-stone classification is connected to the material collecting chamber through a gas path pipeline, and the gas path pipeline is provided with an electromagnetic valve and an air pump; a discharge pipe is arranged at the right end of the parallel excitation platform, and the parallel excitation platform is flexibly connected with the discharge pipe; the tail end of the discharge pipe is connected with a recovery chamber.
Further, the parallel excitation stage is as shown in fig. 2, and includes a movable stage 42, a static stage 41, and 3 single open chains I, ii, and iii, and the parallel excitation stage further includes a specific topological structure, the topological structure of the parallel excitation stage is 2-PRU + CRCR, and the structure of the single open chain I (P1 | R1-U1) is equivalent to P1 | R1 | R11 | R12. The structure arrangement of the single-split chain III is the same as that of I, the kinematic chain structure (P3 ^ R3-U3) is equivalent to P3 ^ R3 ^ R31 ^ R32, and the two single-split chains are coplanar. The structure of single-opening chain II (C2 ^ R2 ^ C21 ^ R21) is equivalent to R22| P22 ^ R2 ^ R23| P23 ^ R21, moving pair P1, P3, cylindrical pair C2 axis is coplanar, and P1, P3 axes are coincident, C2 axis is parallel to P1, P3 axes. The parallel excitation stage has two three degrees of freedom of translation and rotation, namely translation along X and Z axes and rotation around Y axis.
Further, the classification sucker 5 is shown in fig. 3, and includes a sucker body 52 and air suction holes 51, the air suction holes are uniformly distributed in the sucker body in an array manner, inlets of all the air suction holes are located on the lower surface of the sucker body, and outlets of all the air suction holes converge into an air outlet at the upper end of the sucker body, and are connected with an air channel pipeline.
Example 2:
the general architecture of the sand making sorting equipment is shown in fig. 4, and the PLC is electrically connected with an upper computer, a piston rod, an electromagnetic valve, an air pump, a position sensor, a driver 1, a driver 2 and a driver 3 respectively. The PLC is connected with an upper computer and is used for setting parameters such as the feeding times of the piston rod, the types of sand particles, the granularity range to be sorted, the pumping time and the like; the PLC is connected with the piston rod and used for controlling the opening and closing of the piston rod so as to control the feeding times of the piston rod; the PLC is connected with the electromagnetic valve, the electromagnetic valve is connected with the air pump and used for controlling the opening and closing of the air path and setting the air pumping speed of the air pump so as to control the opening time of the air path; the PLC is connected with the driver 1, the driver 2 and the driver 3, the driver 1, the driver 2 and the driver 3 are respectively connected with the stepping motor 1, the stepping motor 2 and the stepping motor 3 and are used for driving the stepping motor 1, the stepping motor 2 and the stepping motor 3 to operate in parallel, and the operating speed, direction and displacement of the three stepping motors are controlled according to the frequency, direction and number of pulses sent by the PLC, so that the vibration frequency, amplitude and direction of the parallel excitation table are controlled; and the PLC is connected with the position sensor and is used for feeding back the actual vibration frequency and direction of the parallel excitation table to form closed-loop control of the parallel excitation table.
Example 3:
a sand making sorting device adopts a servo control system of PC + PLC, the overall architecture of the sand making sorting device is shown in figure 4, a piston rod, three driving motors of a parallel excitation platform, an electromagnetic valve, an air pump and a position sensor are all controlled by a PLC controller, and the PLC is communicated with a PC upper computer through an R232 serial port. The workflow of the device is shown in fig. 5:
1) after the equipment is powered on, a control system is initialized, and a position sensor and an electromagnetic valve are set;
2) adding sandstone raw materials through a feeding hole, then entering a feeding pipe, starting a piston rod, pushing the sandstone raw materials into the parallel excitation table, detecting whether feeding is finished, and if not, continuing to work by the piston rod until all the sandstone raw materials are pushed into the parallel excitation table;
3) selecting the types of the sand and stone particles, the granularity range to be sorted, the pumping time and other parameters on a PC upper computer, and automatically matching the parameters of the vibration excitation frequency and direction of the parallel vibration excitation table, the pumping speed of the air pump and the like by software;
4) clicking a start button on PC upper computer software, starting the parallel excitation table, starting the stepping motors of the three branch chains to run according to specified frequency and direction parameters, feeding the acquired actual vibration frequency and direction back to the PC upper computer by the position sensor to be compared with the set parameters, and gradually increasing the power of the motors until the set excitation frequency, amplitude and direction are reached. At the moment, the needed sandstone particles are in an excited state under the excitation of the excitation table, overcome the self gravity and are in a suspended state;
5) opening the electromagnetic valve, starting the air pump, working according to the air pumping speed given by the PC upper computer, pumping the sandstone particles in an excited state by the air pump, entering the grading sucker through an air suction port of the grading sucker, converging the sandstone particles into an air outlet at the upper end of the sucker body, passing through a pipeline, and finally entering the material collecting chamber;
6) after the sand and stone separation is finished, the vibration of the vibration exciting table is stopped, the vibration exciting table begins to incline towards the discharge pipe at the right end, and the residual materials are conveyed into the recovery chamber for further treatment.
Example 4:
as shown in fig. 2, the number of pairs m of the parallel mechanisms of the parallel excitation stage is 10, and the number of members n is 9, so that the number of basic loops v of the mechanism is 10-n + 1-10-9 + 1-2.
The degree of freedom (DOF) formula is
In the formula: f: a mechanism degree of freedom DOF;
Ms(j+1): POC set of (j +1) th branch end-block;
ms1,Ms2,Ms3By substituting into a formula
Independent equation number xi of 1 st independent loop composed of I and II branches1Is composed of
POC integration of sub-parallel mechanism movable platform composed of I and II branches
The independent displacement equation of the 2 nd independent loop is
Determining a degree of freedom (DOF) of a mechanism as
If the degree of freedom F' of the obtained new mechanism is 0, the F preselected kinematic pairs may be simultaneously the drive pairs. Since the degree of freedom of the mechanism is 3, the moving pairs P1, C2 and P3 of 3 branches are preselected and are driving pairs, the moving pairs are stiffened, the degree of freedom F' of the mechanism after the stiffening is obtained is 3+3+3-5-4 is 0, and the existence criterion of the driving pairs is met.
Example 5;
a sand preparation sorting device is tested by using a sand raw material, and the sand processed by the sand preparation sorting device has uniform particle size distribution and better grading effect by comparing the scanning electron microscope image of each particle grade product of the obtained sand with the raw material, especially the products with the average particle size of 5 mu m and 3 mu m, the particle appearance is uniform, the volume fraction of basic particles reaches more than 70 percent and is far beyond the standard that the integral fraction requirement of the national standard basic particles is 40 percent. The products having average particle sizes of 1 μm and 0.5 μm had a small particle size, and therefore, dispersion became difficult, the classification accuracy decreased, and the integral number of elementary granules reached 40%. Therefore, 0.5 μm is the limit product which can be processed by the sand sorting equipment. By adopting the sand making and sorting equipment provided by the invention, the fine classification of the sand with the average particle size of more than 0.5 mu m can be realized, the particle size distribution of the classified product is narrow, and the particle morphology is uniform.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (2)
1. The utility model provides a system sand sorting facilities which characterized in that: the sand making and sorting equipment comprises a feed inlet, a feed pipe, a piston rod, a parallel excitation platform, a grading sucker, a solenoid valve, an air pump, an air path pipeline, a material collecting chamber, a discharge pipe, a recovery chamber, a PLC (programmable logic controller) and a position sensor, the grading sucker further comprises a sucker body and air suction ports, the air suction ports are uniformly distributed in the sucker body in an array manner, inlets of all the air suction ports are located on the lower surface of the sucker body, outlets of all the air suction ports are converged into an air outlet in the upper end of the sucker body and connected with the air path pipeline, the equipment adopts a PC + PLC servo control system, the feed inlet is connected with the feed pipe and located in the middle of the feed pipe; the tail end of the feeding pipe is provided with a piston rod, the piston rod is used for pushing the sandstone raw material into the parallel excitation table through the feeding pipe, and the front end of the feeding pipe is flexibly connected with the parallel excitation table; a grading sucker is arranged above the parallel excitation table, the grading sucker completely covers the parallel excitation table, but the grading sucker is not in direct contact with the parallel excitation table, a specific gap value is reserved between the grading sucker and the parallel excitation table, and the gap value in the height direction is adjustable; the outlet of the grading sucker is connected to the material collecting chamber through a gas path pipeline, and the gas path pipeline is provided with an electromagnetic valve and an air pump; the right end of the parallel excitation table is provided with a discharge pipe, and the parallel excitation table is flexibly connected with the discharge pipe; arrange material pipe trailing end connection and have the recovery room, three driving motor, solenoid valve, air pump, the position sensor of piston rod, parallelly connected excitation platform all are controlled by the PLC controller, and PLC passes through R232 serial ports and PC host computer and carries out the communication, and the work flow of equipment is as follows:
after the equipment is powered on, a control system is initialized, and a position sensor and an electromagnetic valve are set;
adding sandstone raw materials through a feeding hole, then entering a feeding pipe, starting a piston rod, pushing the sandstone raw materials into the parallel excitation table, detecting whether feeding is finished, and if not, continuing to work by the piston rod until all the sandstone raw materials are pushed into the parallel excitation table;
selecting the types of the sand and stone particles, the granularity range to be sorted and the pumping time parameter on a PC upper computer, and automatically matching the vibration excitation frequency and direction of the parallel vibration excitation table and the pumping speed parameter of the air pump by software;
clicking a start button on PC upper computer software, starting a parallel excitation table, starting the stepping motors of three branch chains to run according to specified frequency and direction parameters, feeding the acquired actual vibration frequency and direction back to the PC upper computer by a position sensor to be compared with the set parameters, and gradually increasing the power of the motors until the set excitation frequency, amplitude and direction are reached, wherein at the moment, required sandstone particles are in an 'excited state' under the excitation of the excitation table, overcome self gravity and are in a suspended state;
opening the electromagnetic valve, starting the air pump, working according to the air pumping speed given by the PC upper computer, pumping the sandstone particles in an excited state by the air pump, entering the grading sucker through an air suction port of the grading sucker, converging the sandstone particles into an air outlet at the upper end of the sucker body, passing through a pipeline, and finally entering the material collecting chamber;
after the sand and stone separation is finished, the vibration of the vibration exciting table stops, the vibration exciting table begins to incline towards the discharge pipe at the right end, the residual materials are conveyed into a recovery chamber for further processing, the parallel vibration exciting table comprises a movable platform, a static platform and 3 single open chains I, II and III, and the parallel vibration exciting table further comprises a specific topological structure.
2. The apparatus of claim 1, wherein the specific topology is 2-PRU + CRCR, the structure of the single-split chain I (P1 ≠ R1-U1) is equivalent to P1 ≠ R1 | R1 | R1 |, the structural arrangement of the single-split chain iii is the same as I, its kinematic chain structure (P1 | R1-U1) is equivalent to P1 | R1 | R1 |, and the two single-split chains are coplanar, the single-split chain ii structure (C1 | R1 | C1 | R1 | P1 | R1 | R1 |, the moving pair P1, P1 | R1 | P1 | R1 |, the moving pair P1, the two cylindrical translations around the axis of the two cylindrical vibration axes, the three-freedom rotation axes are respectively coincident with the rotation axis of the three-freedom rotation axis.
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| CN201811009401.8A CN109201480B (en) | 2018-08-31 | 2018-08-31 | Sand making sorting equipment |
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| CN201811009401.8A CN109201480B (en) | 2018-08-31 | 2018-08-31 | Sand making sorting equipment |
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| CN109201480B true CN109201480B (en) | 2021-06-22 |
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| JP3536198B2 (en) * | 1999-02-17 | 2004-06-07 | 太洋マシナリー株式会社 | Sand breaking classifier |
| CN103286078B (en) * | 2013-06-03 | 2015-02-04 | 江苏大学 | Three-degree-of-freedom parallel material vibration sorting platform |
| CN204052160U (en) * | 2014-05-30 | 2014-12-31 | 福建南方路面机械有限公司 | A kind of selection by winnowing sand device |
| CN204953353U (en) * | 2015-09-25 | 2016-01-13 | 江阴市东仁机械有限公司 | Sand mud piece -rate system |
| CN207057005U (en) * | 2017-07-31 | 2018-03-02 | 程逸豪 | Drug encapsulation production line plug negative pressure adsorption equipment |
| CN207591813U (en) * | 2017-11-24 | 2018-07-10 | 广东翁江化学试剂有限公司 | A kind of chemical industry vacuum reaction kettle |
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