CN114377964A - Membrane impurity separation winnowing machine sieve pore blockage removing device and method - Google Patents
Membrane impurity separation winnowing machine sieve pore blockage removing device and method Download PDFInfo
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- CN114377964A CN114377964A CN202210080265.1A CN202210080265A CN114377964A CN 114377964 A CN114377964 A CN 114377964A CN 202210080265 A CN202210080265 A CN 202210080265A CN 114377964 A CN114377964 A CN 114377964A
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- airflow
- sieve
- winnowing machine
- membrane
- impurity separation
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- 239000012528 membrane Substances 0.000 title claims abstract description 48
- 238000000926 separation method Methods 0.000 title claims abstract description 42
- 239000012535 impurity Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000036619 pore blockages Effects 0.000 title description 4
- 239000011148 porous material Substances 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000010902 straw Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- 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
- B07B11/08—Cleaning arrangements
-
- 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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
-
- 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
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to a blockage removing device and a blockage removing method for sieve pores of a membrane impurity separation winnowing machine, and belongs to the technical field of agricultural mechanical equipment. A blockage removing device of a membrane impurity separation winnowing machine comprises a centrifugal blower, a plurality of airflow pipelines, a plurality of airflow nozzles and two flow dividing pipes; the outlet of the centrifugal blower is connected with the air inlet of the blockage removing device, and two ends of the air inlet are communicated with the flow dividing pipe; the flow dividing pipes are arranged at two ends of the airflow pipeline, and electromagnetic valves are arranged at the joints of the airflow pipeline and the flow dividing pipes; the airflow nozzles are arranged on the airflow pipeline at equal intervals.
Description
Technical Field
The invention relates to a blockage removing device and a blockage removing method for sieve pores of a membrane impurity separation winnowing machine, and belongs to the technical field of agricultural mechanical equipment.
Background
The residual film after mechanical recovery is mixed with impurities such as straws, soil blocks and the like, and can be reused only after the impurities are removed, and the film impurity separation winnowing machine is key equipment for the residual film resource utilization and impurity removal link.
The membrane impurity separation winnowing machine can better realize impurity winnowing separation in the incomplete membrane at the operation initial stage, but after equipment operation a period, the jam of different degrees appears in the sieve mesh, seriously influences selection by winnowing efficiency, because the complicated mechanical physics characteristic of flexible incomplete membrane and stereoplasm straw in the membrane impurity mixture, traditional methods such as vibration, hitting are difficult to clear away the jam of sieve hole department, and the clear stifled device of effectual sieve mesh is pressed to need, can realize the clear stifled processing of membrane impurity separation winnowing machine sieve mesh.
Chinese patent document CN203853285U discloses a device and an engineering machine for cleaning a vibrating screen, which utilizes a screen monitoring device to monitor the plugging rate of the screen, and then controls whether to perform air jet cleaning on the screen according to the plugging condition, however, the method is only suitable for monitoring and cleaning a planar screen, and the membrane impurity separation winnowing machine is mostly cylindrical, and the method is not suitable; chinese patent document CN113070200A discloses a drum screen mesh blockage clearing device, which identifies whether the screen mesh is blocked by a laser ranging system, and drives a slider to drive a gas nozzle to move to a corresponding position for blockage clearing, but when the separation device rotates at a high speed, the laser ranging system identifies blockage, and a single gas nozzle cannot clear blockage in time, which is not suitable for a drum screen type separation device rotating at a high speed.
Disclosure of Invention
One of the purposes of the invention is to provide the blockage removing device for the sieve pores of the membrane impurity separation winnowing machine, which has a simple structure and reliable work and can realize high-efficiency blockage removal of the sieve pores.
The invention also aims to provide a method for clearing and blocking the sieve pores by utilizing the membrane impurity separation winnowing machine sieve pore clearing and blocking device, which can realize high-efficiency clearing and blocking of the sieve pores.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a membrane impurity separation winnowing machine sieve pore blockage removing device comprises a centrifugal blower, a plurality of airflow pipelines, a plurality of airflow nozzles and two shunt pipes; the outlet of the centrifugal blower is connected with an air inlet, and two ends of the air inlet are communicated with the flow dividing pipe; the flow dividing pipes are arranged at two ends of the airflow pipeline, and electromagnetic valves are arranged at the joints of the airflow pipeline and the flow dividing pipes; the airflow nozzles are arranged on the airflow pipeline at equal intervals.
On the basis of the blockage removing device for the sieve pores of the membrane impurity separation winnowing machine, the flow dividing pipes are of semicircular arc structures, and the length direction of the airflow pipeline is parallel to the central connecting line of the two flow dividing pipes.
On the basis of the blockage removing device for the sieve pores of the membrane impurity separation winnowing machine, 5 airflow pipelines are arranged, and included angles between the connecting line of the end points of the airflow pipelines and the circle center of the semi-circular arc and the axial direction of the membrane impurity separation winnowing machine are respectively 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
On the clear stifled device basis of above-mentioned miscellaneous separation air separator sieve mesh of membrane, air current shower nozzle airflow outlet is the circular port, and four rectangle openings of circular port periphery distribution, and the rectangle opening is the cross and distributes.
The utility model provides a miscellaneous separation air separator of membrane, includes frame, centrifugal fan, screening mechanism and collection membrane case, and centrifugal fan passes through the pipeline and is connected with screening mechanism, and screening mechanism includes drum sieve, helical blade and sealed cowling, is equipped with helical blade on the drum sieve outer wall, and the drum sieve periphery installation sealed cowling, installs the clear stifled device of miscellaneous separation air separator sieve mesh of membrane between drum sieve and the sealed cowling.
A method for clearing and blocking sieve pores by utilizing a sieve pore clearing and blocking device of a membrane impurity separation winnowing machine is characterized in that a centrifugal blower is started, airflow enters through an air inlet, the airflow is conveyed into each airflow pipeline through a flow dividing pipe, the airflow sprayed out by an airflow nozzle disturbs the flow field at the sieve pores, the stress balance of a membrane impurity mixture at the sieve pores is broken, and the phenomenon that sheet residual membranes are attached to the sieve pores to form blockage is avoided;
the control rule of the electromagnetic valve on the airflow pipeline is as follows:
in the formula (I), the compound is shown in the specification,nis the number of cycles,n=0、1...；ais the solenoid valve duty cycle time, s;bfor the operating time of the solenoid valve, s, whereina＞b。
On the basis of the method for clearing and blocking the sieve pores by using the device for clearing and blocking the sieve pores of the membrane impurity separation winnowing machine, the radial distance between the outlet of the airflow spray head and the sieve pores is 8-12 cm.
The invention has the advantages that:
the centrifugal blower generates high-pressure airflow at a certain speed, the airflow enters through the air inlet and is conveyed to each airflow pipeline through the flow dividing pipes, the airflow is sprayed out through the spray heads and is simultaneously diffused towards other directions, the blockage is removed accurately and efficiently through the sieve holes, the important significance is achieved for guaranteeing the screening performance and the mechanism reliability, and the multi-spray-head design is higher in accuracy compared with a single-spray-head blockage identifying blockage removing device, and the rotary screen is more suitable for high-speed rotating rotary screens.
Drawings
The accompanying drawings, which are included to provide a further 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 principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of a membrane impurity separation winnowing machine according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a blockage removing device of the membrane impurity separation winnowing machine in the embodiment of the invention.
Fig. 3 is a schematic view of a partial enlarged view of the airflow nozzle and the mesh according to the embodiment of the invention.
FIG. 4 is a schematic view of an embodiment of an airflow nozzle
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A membrane impurity separation winnowing machine sieve pore blockage removing device comprises a centrifugal blower, a plurality of airflow pipelines, a plurality of airflow nozzles and two shunt pipes; the outlet of the centrifugal blower is connected with two ends of the air inlet and is communicated with the flow dividing pipe; the flow dividing pipes are arranged at two ends of the airflow pipeline, and electromagnetic valves are arranged at the joints of the airflow pipeline and the flow dividing pipes; the airflow nozzles are arranged on the airflow pipeline at equal intervals.
On the basis of the blockage removing device for the sieve pores of the membrane impurity separation winnowing machine, the flow dividing pipes are of the semicircular arc structures, so that the energy loss of air flow in the flowing process is reduced, air flow pipelines can be mounted at different positions, and the length directions of the air flow pipelines are parallel to the central connecting line of the two flow dividing pipes.
On the basis of the blockage removing device for the sieve pores of the membrane impurity separation winnowing machine, 5 airflow pipelines are arranged, and included angles between the connecting line of the end points of the airflow pipelines and the circle center of the semi-circular arc and the axial direction of the membrane impurity separation winnowing machine are respectively 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
On the clear stifled device basis of above-mentioned miscellaneous separation air separator sieve mesh of membrane, the diameter of air current shower nozzle is less than the air current pipeline, can further compressed gas, form the air current of stronger impact force, air current shower nozzle airflow outlet is the circular port, four rectangle openings of circular port periphery distribution, and the rectangle opening is the cross and distributes, and the air current can be simultaneously to other directions diffusion in normal spun, guarantees that two shower nozzles middle cross section position sieve mesh department has the air current of certain speed to cover, prevents that the non-shower nozzle from just taking place to block up to the position sieve mesh.
The utility model provides a miscellaneous separation air separator of membrane, includes frame, centrifugal fan, screening mechanism and collection membrane case, and centrifugal fan passes through the pipeline and is connected with screening mechanism, and screening mechanism includes drum sieve, helical blade and sealed cowling, is equipped with helical blade on the drum sieve outer wall, and the drum sieve periphery installation sealed cowling, installs the clear stifled device of miscellaneous separation air separator sieve mesh of membrane between drum sieve and the sealed cowling.
A method for clearing and blocking sieve pores by utilizing a sieve pore clearing and blocking device of a membrane impurity separation winnowing machine is characterized in that a centrifugal blower is started, airflow enters through an air inlet, the airflow is conveyed into each airflow pipeline through a flow dividing pipe, the airflow sprayed out by an airflow nozzle disturbs the flow field at the sieve pores, the stress balance of a membrane impurity mixture at the sieve pores is broken, and the phenomenon that sheet residual membranes are attached to the sieve pores to form blockage is avoided;
the control rule of the electromagnetic valve on the airflow pipeline is as follows:
in the formula (I), the compound is shown in the specification,nis the number of cycles,n=0、1...；ais the solenoid valve duty cycle time, s;bfor the operating time of the solenoid valve, s, whereina＞b. When M =1, the electromagnetic valve is opened, airflow passes through the airflow pipeline, and the airflow sprayed by the spray head enters a working state; when M =0, the electromagnetic valve is closed, no air flow passes through the corresponding air flow pipeline, and the spray head enters an intermittent state. The current working rule of the electromagnetic valve is as follows: working time isbs, interval time ofa-b s，a、bNumerical value accessible controller sets up, and each solenoid valve opening time of singlechip control cooperates solenoid valve intermittent type work, realizes that each position moves when staggering, can realize the shower nozzle collaborative work on the different positions air flow pipeline, realizes diversified clear stifled, and wherein solenoid valve operating time, intermittent type time and opening time all can set up through the controller. The air flow is sprayed out through the nozzle, and the generated high-speed and high-pressure air flow impacts materials such as cotton stalks, residual films and the like blocked at the screen holes to interfere the motion state of the film impurity mixture at the screen holes, so that the aim of destroying the stress balance of the film impurity mixture at the screen holes is fulfilled.
In this embodiment, the radial distance between the outlet of the airflow nozzle and the sieve holes is 8-12 cm.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a clear stifled device of miscellaneous separation air separator sieve mesh which characterized in that: comprises a centrifugal blower (7), a plurality of air flow pipelines (15), a plurality of air flow spray heads (14) and two shunt pipes (17); the outlet of the centrifugal blower (7) is connected with an air inlet (18), and two ends of the air inlet (18) are communicated with a shunt pipe (17); the shunt pipes (17) are arranged at two ends of the airflow pipeline (15), and the electromagnetic valve (16) is arranged at the joint of the airflow pipeline (15) and the shunt pipes (17); the airflow nozzles (14) are arranged on the airflow pipeline (15) at equal intervals.
2. The device for clearing and blocking the sieve pores of the membrane impurity separation winnowing machine according to claim 1, characterized in that: the shunt tubes (17) are of a semicircular arc structure, and the length direction of the airflow pipeline (15) is parallel to the central connecting line of the two shunt tubes (17).
3. The device for clearing and blocking the sieve pores of the membrane impurity separation winnowing machine according to claim 2, characterized in that: the number of the air flow pipelines (15) is 5, and the included angles between the connecting line of the end points of the air flow pipelines (15) and the circle center of the semi-circular arc and the axial direction of the film impurity separation winnowing machine are respectively 0 degree, 45 degrees, 90 degrees, 135 degrees and 180 degrees.
4. The device for clearing and blocking the sieve pores of the membrane impurity separation winnowing machine according to claim 1, characterized in that: airflow nozzle (14) air outlet is the circular port, and four rectangle openings of circular port periphery distribution, and the rectangle opening is the cross and distributes.
5. The utility model provides a miscellaneous separation air separator of membrane, includes frame (11), centrifugal fan (1), screening mechanism and membrane collection box (9), and centrifugal fan (1) is connected with screening mechanism through pipeline (2), and screening mechanism includes drum sieve (4), helical blade (8) and sealed cowling (5), is equipped with helical blade (8) on drum sieve (4) outer wall, and drum sieve (4) periphery installation sealed cowling (5), its characterized in that: a device for cleaning and blocking the sieve pores of the membrane impurity separation winnowing machine according to claim 1, 2, 3 or 4 is arranged between the rotary sieve (4) and the sealing cover (5).
6. A method for clearing and blocking sieve pores by utilizing a sieve pore clearing and blocking device of a membrane impurity separation winnowing machine is characterized by comprising the following steps: the centrifugal blower (7) is started, airflow enters through the air inlet (18), the airflow is conveyed into each airflow pipeline (15) through the flow dividing pipe (17), the airflow sprayed out through the airflow spray head (14) disturbs the flow field at the sieve holes, the stress balance of the membrane impurity mixture at the sieve holes is broken, and the phenomenon that the sheet residual membranes are attached to the sieve holes to form blockage is avoided;
the control rule of the electromagnetic valve on the airflow pipeline is as follows:
in the formula (I), the compound is shown in the specification,nis the number of cycles,n=0、1...；ais the solenoid valve duty cycle time, s;bfor the operating time of the solenoid valve, s, whereina＞b。
7. The method for clearing and blocking the sieve pores by using the clearing and blocking device of the membrane impurity separation winnowing machine according to claim 6, is characterized in that: the radial distance between the outlet of the airflow spray head (14) and the sieve holes is 8-12 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210080265.1A CN114377964A (en) | 2022-01-24 | 2022-01-24 | Membrane impurity separation winnowing machine sieve pore blockage removing device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210080265.1A CN114377964A (en) | 2022-01-24 | 2022-01-24 | Membrane impurity separation winnowing machine sieve pore blockage removing device and method |
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| CN202210080265.1A Pending CN114377964A (en) | 2022-01-24 | 2022-01-24 | Membrane impurity separation winnowing machine sieve pore blockage removing device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115338117A (en) * | 2022-08-29 | 2022-11-15 | 农业农村部南京农业机械化研究所 | Cylinder screening device with non-contact blockage removal component |
| CN115400947A (en) * | 2022-09-23 | 2022-11-29 | 重庆钢铁股份有限公司 | Device and method for automatically purging lump ore vibrating screen |
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| CN115400947A (en) * | 2022-09-23 | 2022-11-29 | 重庆钢铁股份有限公司 | Device and method for automatically purging lump ore vibrating screen |
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Application publication date: 20220422 |