CN112934706A - Efficient, environment-friendly and energy-saving raw grain impurity removing device - Google Patents
Efficient, environment-friendly and energy-saving raw grain impurity removing device Download PDFInfo
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- CN112934706A CN112934706A CN202110436687.3A CN202110436687A CN112934706A CN 112934706 A CN112934706 A CN 112934706A CN 202110436687 A CN202110436687 A CN 202110436687A CN 112934706 A CN112934706 A CN 112934706A
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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
- 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
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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
- B07B11/02—Arrangement of air or material conditioning accessories
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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Abstract
The invention discloses a high-efficiency, environment-friendly and energy-saving raw grain impurity removal device, which comprises a feeding winnowing system, a cylindrical screening system, a vibrating screening system and a vertical winnowing system which are sequentially connected; the device also comprises a gravity settling system and a pulse dust removal system which are connected in sequence; and part of light and impurity materials and dust which cannot be settled in the gravity settling system return to the vertical winnowing system along with the air return system to be subjected to secondary vertical winnowing. The adoption is selection by winnowing earlier and is cleared up technology again, has effectively reduced the impurity content that gets into the clearance system, especially light-duty and flexible impurity content, can effectively avoid the screen face sieve mesh to block up, ensures the stability of screen face operating efficiency, reduces time and the number of times that personnel cleared up the sieve mesh and block up. The structure and the process of air separation, cylinder screening, vibration screening and air separation are adopted, the cleaning process is long, and the cleaning capacity is comprehensive. By adopting the structure and the process of circular winnowing and pulse dust removal, the energy consumption of directly adopting the pulse dust removal structure can be reduced under the condition of meeting the environmental protection requirement.
Description
Technical Field
The invention relates to a device for removing impurities from raw grains.
Background
The content of impurities, particularly organic impurities, in the current mechanically harvested raw grains put into a warehouse is higher and higher, and the conventional combined cleaning equipment cannot clean the impurities to be within 1.0% of the national standard requirement at one time when the content of the impurities in the raw grains is higher than 2.5%, and a mode of combining two equipment in series is usually adopted.
By adopting the combined cleaning equipment with the structure of firstly vibrating and screening and then vertically winnowing, the sieve holes on the large impurity sieve surface of the vibrating sieve are easily blocked by flexible long impurities and large impurities, and the operation efficiency is influenced.
The combined cleaning equipment with the structure of air separation and screening firstly and vertical air separation finally is adopted, and the energy consumption of the dust and impurity removing part is high.
In addition, the existing impurity removal equipment has the following defects:
1. one device can not clean the grains with high impurity content to reach the standard.
2. The sieve mesh is easy to be blocked when the grain impurities are cleaned, so that the operation efficiency of the equipment is reduced.
3. Solves the problems of large total air quantity of the system and high energy consumption when adopting the front and back air separation processes.
Disclosure of Invention
In view of the above, the invention provides an efficient, environment-friendly and energy-saving raw grain impurity removal device, which can be used for cleaning high impurity rate grains to meet the standard through one device, and has the advantages of high device operation efficiency and low energy consumption.
In order to solve the technical problems, the technical scheme of the invention is that a high-efficiency, environment-friendly and energy-saving raw grain impurity removal device is adopted, and the device comprises a feeding winnowing system which is sequentially connected and is used for carrying out primary winnowing on raw grains and removing light impurity materials in the raw grains; the cylindrical screening system is used for grading the primary winnowed raw grains and removing the large and large foreign materials in the raw grains; the vibration screening system is used for carrying out multi-stage screening on the graded raw grains and removing large and large foreign materials and fine foreign materials in the raw grains; the vertical winnowing system is used for vertically winnowing the raw grains subjected to the multi-stage screening to remove light impurity materials and dust in the raw grains; the gravity settling system is used for performing gravity settling on the light and impurity materials and dust screened by the vertical winnowing system and the light and impurity materials screened by the feeding sorting system; the pulse dust removal system is used for filtering and settling light and impurity materials and dust which cannot be settled in the gravity settling system; and part of light and impurity materials and dust which cannot be settled in the gravity settling system return to the vertical winnowing system along with the air return system to be subjected to secondary vertical winnowing.
As an improvement, the feeding winnowing system comprises a feeding winnowing system casing, a material distribution mechanism and a gravity door, wherein the material distribution mechanism and the gravity door are arranged in the feeding winnowing system casing; the gravity door comprises a central shaft and a door plate which can turn around the central shaft; the door plate is provided with a counterweight lever, so that the gravity door is opened when the raw grains falling on the gravity door exceed the force applied to the door plate by the counterweight lever; the air separation channel is communicated with the feeding air separation system shell, and an inlet of the air separation channel is arranged below the gravity door; the winnowing channel is communicated with the gravity settling system by using a feeding air suction pipe.
As a further improvement, the material distributing mechanism is in a triangular pyramid shape, and a buffer plate is obliquely arranged between the material distributing mechanism and the gravity door.
As another further improvement, the cylindrical screening system comprises a cylindrical screen with a high front part and a low back part; the cylindrical screen can rotate along the axis of the cylindrical screen; the cylindrical screen is provided with a plurality of annular screen meshes of various specifications from front to back, and the diameters of the screen meshes of the annular screen meshes are gradually reduced from front to back; the front end of the cylindrical screen is communicated with a discharge port of the feeding winnowing system, and the rear end of the cylindrical screen is communicated with an impurity receiving port of the vibrating screen; the vibrating screening system is arranged below the cylindrical screening system and comprises a large impurity screening surface, a fine impurity screening surface and a vibrating screen bottom plate which are obliquely arranged from top to bottom in a high-back low manner; the raw grains screened by the most front annular screen mesh of the cylindrical screen fall onto the fine impurity screening surface through a vibrating screen feed hopper; the grains screened by the second to the last annular screen mesh of the cylindrical screen fall onto the large impurity screen surface through the material transfer passage; the cavity above the large impurity screening surface is communicated with a material receiving port of the vibrating screen, the cavity between the bottom plate of the vibrating screen and the fine impurity screening surface is communicated with the material receiving port of the vibrating screen, and the cavity between the large impurity screening surface and the fine impurity screening surface is communicated with the vertical winnowing system.
As an improvement, the cylindrical screen is provided with three specifications of annular screens from front to back, namely a first screen, a second screen and a third screen.
As an improvement, a plurality of inclined material plates are arranged in the material transfer passage, so that the grains passing through the second screen and the third screen are guided to the middle front part of the large impurity screen surface.
As an improvement, the vertical winnowing system comprises a vertical winnowing channel which is vertically arranged; an adjustable air plate for adjusting the cross section width of the vertical air separation channel is arranged in the vertical air separation channel; the upper end of the adjustable air plate is movably connected in the vertical air separation channel, and the lower end of the adjustable air plate is connected with an adjusting bolt; the lower end of the vertical winnowing channel is provided with a grain outlet collecting hopper, and the upper end of the vertical winnowing channel is communicated with a gravity settling system.
As an improvement, the gravity settling system comprises a gravity settling chamber, wherein a vertical partition plate is arranged in the gravity settling chamber, and a gap is formed between the partition plate and the bottom of the gravity settling chamber; the bottom of the gravity settling chamber is provided with a impurity discharging device; the impurity discharging device comprises an impurity discharging auger casing, and the impurity discharging auger casing is provided with an impurity discharging auger; and a trash discharging gravity gate is arranged behind the trash discharging auger and is connected with a trash receiving port of the gravity settling system.
As an improvement, the gravity settling chamber is divided into two chambers, namely a first gravity settling chamber and a second gravity settling chamber which are arranged side by side from left to right; the first gravity settling chamber and the second gravity settling chamber are not communicated with each other; the first gravity settling chamber is communicated with a pulse dust removal system; the air return system is connected to the second gravity settling chamber and comprises an air return fan, a circulating air return pipe and a circulating air equalizing device which are sequentially connected, and the circulating air equalizing device is connected with the vertical winnowing system.
As an improvement, the pulse dust removal system is a suction type pulse filtering dust remover and comprises a pulse dust removal chamber, wherein a vertical partition plate is arranged in the pulse dust removal chamber, and a gap is formed between the partition plate and the bottom of the pulse dust removal chamber; the bottom of the pulse dust removal chamber is provided with a impurity removal device; the pulse dust removal chamber is connected with the gravity settling system through an air suction pipe, and an air suction fan is arranged on the air suction pipe.
The invention has the advantages that:
1. the adoption is selection by winnowing earlier and is cleared up technology again, has effectively reduced the impurity content that gets into the clearance system, especially light-duty and flexible impurity content, can effectively avoid the screen face sieve mesh to block up, ensures the stability of screen face operating efficiency, reduces time and the number of times that personnel cleared up the sieve mesh and block up.
2. The structure and the process of winnowing, cylindrical screening, vibratory screening and winnowing are adopted, so that the cleaning process is long, the cleaning capacity is comprehensive, and the device is suitable for cleaning grains with high impurity content.
3. By adopting the structure and the process of circular winnowing and pulse dust removal, the energy consumption of directly adopting the pulse dust removal structure can be reduced and the volume of the impurity and dust removal structure can be reduced under the condition of meeting the environmental protection requirement.
Drawings
Fig. 1 is a schematic view of the appearance structure of the present invention.
Fig. 2 is a schematic sectional view of the present invention, in which arrows indicate the material flowing direction.
Fig. 3 is a schematic perspective view of the present invention.
Fig. 4 is a perspective view of the drum screening system removed.
Fig. 5 is a perspective view of a cylinder screening system.
Fig. 6 is a perspective view of a vibratory screening system.
Fig. 7 is a perspective view of a gravity settling system and a pulse dust removal system.
Fig. 8 is a schematic structural view of the impurity removing device.
Fig. 9 is a schematic structural view of the separated material decoration.
Fig. 10 is a schematic structural view of a material transfer passage.
The labels in the figure are:
1 is a feeding winnowing system; 2 is a cylinder screening system; 3, a vibration screening system; 4 is a gravity settling system; 5 is a pulse dust removal system; 6 is a walking system; 7 is a vibrating screen impurity receiving port; 8-1 is an impurity receiving port of the first gravity settling system; 8-2 is an impurity receiving port of the second gravity settling system; 9 is an impurity receiving port of the pulse dust removal system; 10 is a grain outlet; 11 is a circulating return air pipe; 12 is a circulating air-balancing device; 13 is a vertical winnowing system; and 14 is a return air fan.
1-1 is a shell of a feeding winnowing system; 1-2 is a material distributing mechanism; 1-3 is a buffer plate; 1-4 are gravity gates; 1-5 are air separation channels; 1-6 is a feeding air suction pipe; 1-4-1 is a central shaft; 1-4-2 is a counterweight lever; 1-4-3 is a door plate.
2-1 is a feed channel; 2-2 is a cylindrical framework; 2-3 is a first screen; 2-4 is a second screen; 2-5 is a third screen; 2-6 is a long (large) impurity discharge hole; 2-7 are long (large) impurity discharging channels; 2-8 are material transfer channels; 2-9 is a cylinder transmission motor; 2-10 is a transmission chain; 2-11 is a chain wheel; 2-12 are cylinder limiting lower supporting rollers; 2-13 are cylinder limit upper supporting rollers; 2-14 are cylinder screening system frames.
3-1 is a vibrating screen feed hopper; 3-2 is a feed inlet at the top of the vibrating screen; 3-3 is a large impurity sieve surface; 3-4 is fine impurity sieve surface; 3-5 is a vibrating screen bottom plate; 3-6 is a fine impurity discharge port; 3-7 is a large and large impurity feeding hole; 3-8 is a big impurity discharge hole; and 3-9 is a mixed material discharge port.
4-1 is a first gravity settling system; 4-2 is a second gravity settling system; 4-1-1 is an air inlet of the first gravity settling chamber; 4-1-2 is a first gravity settling chamber impurity discharging motor; 4-1-3 is a first gravity settling chamber impurity discharging auger shell; 4-1-4 is a first gravity settling chamber impurity discharging auger; 4-1-5 is a impurity discharging gravity gate of the first gravity settling chamber; 4-1-6 is an air suction inlet of the feeding winnowing system; 4-1-7 is a first gravity settling chamber shell; 4-1-8 is an air outlet of the first gravity settling chamber; 4-2-1 is an air inlet of the second gravity settling chamber; 4-2-2 is a second gravity settling chamber impurity discharging motor; 4-2-3 is a second gravity settling chamber impurity discharge auger shell; 4-2-4 is a second gravity settling chamber impurity discharging auger; 4-2-5 is a impurity discharging gravity gate of the second gravity settling chamber; 4-2-5 is a second gravity settling chamber shell.
5-1 is an air suction hood; 5-2 is an air suction pipe; 5-3 is a suction fan.
13-1 is a vertical winnowing device shell; 13-2 is an adjusting bolt; 13-3 is an adjustable air plate; 13-4 is a vertical winnowing channel; 13-5-1 is a first gravity settling chamber connecting channel; 13-5-2 is a second gravity settling chamber connecting channel.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in figure 1, the invention comprises a feeding winnowing system 1 which is connected in sequence and is used for carrying out primary winnowing on raw grains and removing light impurity materials in the raw grains; the cylindrical screening system 2 is used for grading the primary winnowed raw grains and removing large and large foreign materials in the raw grains; the vibration screening system 3 is used for carrying out multi-stage screening on the graded raw grains and removing large and large foreign materials and fine foreign materials in the raw grains; the vertical winnowing system 13 is used for vertically winnowing the multi-stage screened raw grains to remove light impurity materials and dust in the raw grains; the gravity settling system 4 is sequentially connected and is used for performing gravity settling on the light and impurity materials and dust screened by the vertical winnowing system 13 and the light and impurity materials screened by the feeding sorting system; the pulse dust removal system 5 is used for filtering and settling light and impurity materials and dust which cannot be settled in the gravity settling system 4; and part of light and impurity materials and dust which cannot be settled in the gravity settling system 4 return to the vertical winnowing system 13 along with the air return system to be subjected to secondary vertical winnowing.
The above structures are all installed on the traveling system 6, and it is foreseeable that the traveling system 6 includes a bottom plate and rollers arranged on the bottom plate.
Fig. 2 shows the internal structure of the present invention and indicates the moving direction of the material flow.
The specific structure of the present invention is shown in fig. 2 to 10.
The feeding winnowing system 1 comprises a feeding winnowing system casing 1-1, a material distribution mechanism 1-2 and a gravity door 1-4, wherein the material distribution mechanism 1-2 and the gravity door are arranged in the feeding winnowing system casing 1-1; the gravity door 1-4 comprises a central shaft 1-4-1 and a door panel 1-4-3 which can turn around the central shaft 1-4-1; the door panel 1-4-3 is provided with a counterweight lever 1-4-2, so that the gravity door 1-4 is opened when the raw grain falling on the gravity door 1-4-3 exceeds the force applied to the door panel 1-4-3 by the counterweight lever 1-4-2; the air separation device also comprises an air separation channel 1-5 communicated with the shell 1-1 of the feeding air separation system, wherein an inlet of the air separation channel 1-5 is arranged below the gravity door 1-4; the winnowing channels 1-5 are communicated with the gravity settling system 4 by utilizing the feeding suction pipes 1-6.
The material distributing mechanism 1-2 is in a triangular pyramid shape with a large lower part and a small upper part, and a buffer plate 1-3 is obliquely arranged between the material distributing mechanism 1-2 and the gravity gate 1-4.
The raw grains are gathered by an external conveying device and enter a semi-closed feeding winnowing system 1. The gathering raw grain flows in from the right top of the material distributing mechanism 1-2 in the shell 1-1 of the feeding winnowing system, gradually disperses the material in the winnowing section of the winnowing system under the action of staggered-layer bidirectional multi-point distribution of the pyramid triangular material distributing mechanism 1-2, and falls to the position of the turnable plate 1-4-3 of the gravity door 1-4 in a layered manner under the guidance of the buffer plate 1-3.
The gravity door 1-4 is a lever device which can rotate around a central shaft 1-4-1, and the rotation amount is adjusted by a self counterweight lever 1-4-2. When the weight of raw grains stacked above the gravity door 1-4 is larger than the force of the counterweight lever system, the turnable plate 1-4-3 on the gravity door 1-4 is opened around the central shaft 1-4-1, and the larger the weight of the grains stacked is, the larger the opening size is. The grain is stacked on the gravity gates 1-4, so that the size of the grain flow dispersed in the winnowing section of the winnowing system is further widened and homogenized. Because the opening size is fixed, the grain flow falls to the thickness size of the air separation channel 1-5 at the same time.
The air separation channel 1-5 is connected with a feeding air suction pipe 1-6, and the feeding air suction pipe 1-6 is connected with an air suction opening 4-1-6 of a feeding air separation system of the first gravity settling chamber. Due to the negative pressure of the pulse dust collector 5, the air separation channels 1-5 are in a negative pressure air suction state.
When the materials form a waterfall-shaped falling after passing through the gravity gates 1-4 and flow through the air separation channels 1-5, the light and impurity materials are separated from the material flow under the action of suction force and enter the gravity settling system 4 for settling, and the heavy materials enter the cylindrical screening system 2.
The cylindrical screening system 2 is arranged below the feeding winnowing system 1. The cylinder screening system 2 comprises a cylinder screen with a high front part and a low back part; the cylindrical screen can rotate along the axis of the cylindrical screen; the cylindrical screen is provided with a plurality of annular screen meshes of various specifications from front to back, and the diameters of the screen meshes of the annular screen meshes are gradually reduced from front to back; the front end of the cylindrical screen is communicated with a discharge port of the feeding winnowing system 1, and the rear end of the cylindrical screen is communicated with an impurity receiving port 3-7 of the vibrating screen. In this embodiment, the cylindrical screen is provided with three types of annular screens from front to back, namely a first screen 2-3, a second screen 2-4 and a third screen 2-5, and the mesh of the first screen 2-3 > the mesh of the second screen 2-4 > the mesh of the third screen 2-5. Specifically, three annular screens are fixed on a cylinder frame 2-2 and are radially limited by a group of cylinder limiting lower carrier rollers 2-12 and cylinder limiting upper carrier rollers 2-13, the cylinder frame 2-2 is fixedly connected with a chain wheel 2-11, and is driven to rotate by a cylinder transmission motor 2-9 and a transmission chain 2-10 to rotate. The front end of the cylindrical screen is provided with a feed channel 2-1 (also a discharge port of the feed winnowing system 1), and a part of the feed channel 2-1 enters the interior of the cylindrical framework 2-2.
The vibrating screen system is arranged 3 below the cylindrical screen system 2 and comprises a large impurity screen surface 3-3, a fine impurity screen surface 3-4 and a vibrating screen bottom plate 3-5 which are obliquely arranged from top to bottom in a high-back low manner; wherein the sieve mesh size of the 3-3 sieve surfaces of the large impurity sieve surface is larger than the sieve mesh size of the 3-4 sieve surfaces of the fine impurity sieve surface.
The raw grains screened by the most front annular screen (the first screen 2-3 in the embodiment) of the cylindrical screen fall onto a fine impurity screen surface 3-4 through a vibrating screen feed hopper 3-1; the grains screened by the second to the last annular screens (the second screen 2-4 and the third screen 2-5 in the embodiment) of the cylindrical screen fall onto a large impurity screen surface 3-3 through a material transfer passage 2-8 and a feed inlet 3-2 at the top of the vibrating screen; a plurality of inclined material plates are arranged in the material transfer passage 2-8, so that the grains passing through the second screen 2-4 and the third screen 2-5 are reversely guided to the middle front part of the large impurity screen surface 3-3, and the length of the flow of the materials on the vibrating screen surface is increased. The cavity above the large impurity screen surface 3-3 is communicated with the vibrating screen impurity receiving port 3-7, the cavity between the vibrating screen bottom plate 3-5 and the fine impurity screen surface 3-4 is communicated with the vibrating screen impurity receiving port 3-7, and the cavity between the large impurity screen surface 3-3 and the fine impurity screen surface 3-4 is communicated with the vertical winnowing system.
For convenience of installation, the components in the cylinder screening system 2 and the vibration screening system 3 are arranged on the cylinder screening system frames 2-14. The vibrating screen cleaning system 3 is supported by a spring and performs reciprocating linear material throwing motion by a vibrating motor according to the length direction of the screen body.
The raw grains are winnowed and cleaned by the feeding winnowing system 1, enter the feeding channel 2-1 on the cylindrical screening system 2, and then fall onto the screen surface of the first screen 2-3 in the cylindrical framework 2-2. As the cylinder screening system 2 is of an inclined structure, under the driving action of the cylinder driving motor 2-9 and the driving chain 2-10, the grain flow respectively flows through the second screen 2-4 and the third screen 2-5 from the first screen 2-3, the materials smaller than the screen holes of the screens flow to the outside from the inside of the cylinder screen, and the materials which can not pass through flow to the large and large impurity feeding holes 3-7 in the vibrating screening system 3 through the large and large impurity discharging holes 2-6 and the large and large impurity discharging channels 2-7.
The materials cleaned by the first screen 2-3 of the cylinder screening system 2 enter the vibrating screen feed hopper 3-1 through the material transfer passage 2-8 and then enter the fine impurity screening surface 3-4.
The materials cleaned by the second screen 2-4 and the third screen 2-5 of the cylinder screening system 2 enter the front half part and the middle part of the large impurity screening surface 3-3 from the opening of the feeding hole 3-2 at the top of the vibrating screen through the material transfer passage 2-8. The material entering the vibrating screening system 3 moves in a parabolic straight line from a high end to a low end under the action of the excitation of the vibrating motor.
The materials which can not pass through the sieve pores of the sieve plate with the large impurity sieve surface 3-3 flow to the impurity receiving port 7 of the vibrating sieve together with the impurities entering from the large impurity discharge port 3-8 and the medium (large) impurity feed port 3-7. The material passing through the sieve pores of the sieve plate with the large impurity sieve surface 3-3 falls to the fine impurity sieve surface 3-4.
When the materials flow through the 3-4 meshes of the fine impurity screening surface, the materials which can not pass through the 3-4 meshes of the fine impurity screening surface enter the mixed material discharge port 3-9 and enter the vertical winnowing device 13 from the tail end for specific gravity separation.
The materials passing through the 3-4 sieve pores of the fine impurity sieve surface fall to the 3-6 fine impurity discharge port and then enter the 7 impurity receiving port of the vibrating sieve.
The vertical winnowing system 13 comprises a vertical winnowing channel 13-4 which is vertically arranged; the vertical winnowing channel 13-4 is enclosed by a vertical winnowing device shell 13-1. An adjustable air plate 13-3 for adjusting the cross section width of the vertical air separation channel 13-4 is arranged in the vertical air separation channel 13-4; the upper end of the adjustable air plate 13-3 is movably connected in the vertical air separation channel 13-4, and the lower end is connected with an adjusting bolt 13-2; the lower end of the vertical winnowing channel 13-4 is provided with a grain outlet collecting hopper 10, and the upper end is communicated with the gravity settling system 4.
The gravity settling system 4 comprises a gravity settling chamber, wherein a vertical partition plate is arranged in the gravity settling chamber, and a gap is formed between the partition plate and the bottom of the gravity settling chamber; the bottom of the gravity settling chamber is provided with a impurity discharging device; the impurity discharging device comprises an impurity discharging auger casing, and the impurity discharging auger casing is provided with an impurity discharging auger; and a trash discharging gravity gate is arranged behind the trash discharging auger and is connected with a trash receiving port of the gravity settling system.
In this embodiment, the gravity settling chambers are two, that is, a first gravity settling chamber and a second gravity settling chamber which are arranged side by side from left to right; the first settling chamber is surrounded by a first gravity settling chamber shell 4-1-7, and the second gravity settling chamber is surrounded by a second gravity settling chamber shell 4-2-6.
The first gravity settling chamber and the second gravity settling chamber are not communicated with each other and are independent of each other; the first gravity settling chamber is communicated with a pulse dust removal system 5; the air return system is connected to the second gravity settling chamber and comprises an air return fan 14, a circulating air return pipe 11 and a circulating air equalizing device 12 which are sequentially connected, and the circulating air equalizing device 12 is connected with the vertical winnowing system 13. The feeding winnowing system 1 is connected with an air suction inlet 4-1-6 of the feeding winnowing system on the first gravity settling chamber by a feeding air suction pipe 1-6.
The upper end of the vertical winnowing channel 13-4 is respectively connected with the first gravity settling chamber and the second gravity settling chamber through a first gravity settling chamber connecting channel 13-5-1 and a second gravity settling chamber connecting channel 13-5-2. Specifically, the first gravity settling chamber connecting channel 13-5-1 is connected with a first gravity settling chamber air inlet 4-1-1 of a first gravity settling chamber of the first gravity settling system 4-1. The second gravity settling chamber connecting channel 13-5-2 is connected with a second gravity settling chamber air inlet 4-2-1 of the second gravity settling chamber.
The pulse dust removal system 5 is a suction type pulse filtering dust remover and comprises a pulse dust removal chamber, wherein a vertical partition plate is arranged in the pulse dust removal chamber, and a gap is formed between the partition plate and the bottom of the pulse dust removal chamber; the bottom of the pulse dust removal chamber is provided with a impurity removal device (the structure of the impurity removal device is the same as that of the impurity removal device in the gravity settling system, and the detailed description is omitted); the pulse dust removal chamber is connected with a gravity settling system 4 through an air suction pipe 5-2, and an air suction fan 5-3 and an air suction cover 5-1 are arranged on the air suction pipe 5-2. The suction fan 5-3 makes the feeding winnowing system 1 and the vertical winnowing system 13 generate negative pressure so as to remove light and impurity materials and dust. Finally, the dust and light impurities filtered and settled by the pulse dust removal system 5 are discharged from the impurity receiving port 9 of the pulse dust removal system, and the clean gas is discharged from an exhaust port of the suction fan 5-3.
When raw grains enter the lower part of the vertical winnowing channel 13-4 of the vertical winnowing device 13 from the mixed material discharge port 3-9, light and impurity materials and dust are separated from the grains under the action of negative pressure suction, and enter the first gravity settling system 4-1 and the second gravity settling system 4-2 through the first gravity settling chamber connecting channel 13-5-1 and the second gravity settling chamber connecting channel 13-5-2 respectively.
Part of light impurities and dust entering the first gravity settling system 4-1 and in the first gravity settling chamber shell 4-1-7 are settled on the first gravity settling chamber impurity discharging auger shell 4-1-3, and the first gravity settling chamber impurity discharging motor 4-1-2 drives the first gravity settling chamber impurity discharging auger 4-1-4 to rotate so as to push the sediment to the discharge hole. As the length of the impurity discharging auger 4-1-4 of the first gravity settling chamber is less than that of the impurity discharging auger casing 4-1-3 of the first gravity settling chamber, deposits can be accumulated at the tail end of the impurity discharging auger 4-1-4 of the first gravity settling chamber and the discharge end of the impurity discharging auger casing 4-1-3 of the first gravity settling chamber, so that the inside and the outside of the first gravity settling system 4-1 are in a separation state. When the sediment is accumulated to a certain state, the impurity discharging auger 4-1-4 of the first gravity settling chamber pushes the sediment to push the impurity discharging gravity gate 4-1-5 of the first gravity settling chamber, and the sediment is discharged to the impurity receiving port 8-1 of the first gravity settling system.
Light impurities and dust which cannot be settled in the impurity discharging auger shell 4-1-3 of the first gravity settling chamber enter an air inlet of the pulse dust removal system 5 from an air outlet 4-1-8 of the first gravity settling chamber, are filtered and settled in the pulse dust removal system 5, and are discharged to an impurity receiving port 9 of the pulse dust removal system through a closed auger at the bottom after settlement.
Part of light impurities and dust entering the second gravity settling chamber shell 4-2-3 of the second gravity settling system 4-2 are settled on the impurity discharge auger shell 4-2-4 of the second gravity settling chamber. The impurity discharging motor 4-2-2 of the second gravity settling chamber drives the impurity discharging auger 4-2-4 of the second gravity settling chamber to rotate so as to push the sediment to the discharge hole. As the length of the impurity discharging auger 4-2-4 of the second gravity settling chamber is less than that of the impurity discharging auger casing 4-2-3 of the second gravity settling chamber, deposits can be accumulated at the tail end of the impurity discharging auger 4-2-4 of the second gravity settling chamber and the discharge end of the impurity discharging auger casing 4-2-3 of the second gravity settling chamber, so that the inside and the outside of the second gravity settling system 4-2 are in a separated state. When the sediments are accumulated to a certain state, the impurity discharging auger 4-2-4 of the second gravity settling chamber pushes the sediments to push the impurity discharging gravity gate 4-2-5 of the second gravity settling chamber, and the sediments are discharged to the impurity receiving port 8-2 of the second gravity settling system.
Light impurities and dust which cannot be settled in the impurity discharge auger shell 4-2-3 of the second gravity settling chamber enter the return air fan 14 through an air outlet of the second gravity settling chamber shell 4-2-6, and then the dust-containing impurity-containing gas is circulated to a grain and impurity separation part below a mixed material discharge port 3-9 of the vibrating screening system 3 and a vertical winnowing channel 13-4 of the vertical winnowing device 13 for secondary recycling through a circulating air path consisting of a circulating return air pipe 11 and a circulating air equalizing device 12.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (10)
1. A high-efficiency, environment-friendly and energy-saving raw grain impurity removing device is characterized by comprising a plurality of raw grain impurity removing devices which are sequentially connected
The feeding winnowing system is used for carrying out primary winnowing on the raw grains and removing light impurity materials in the raw grains;
the cylindrical screening system is used for grading the primary winnowed raw grains and removing the large and large foreign materials in the raw grains;
the vibration screening system is used for carrying out multi-stage screening on the graded raw grains and removing large and large foreign materials and fine foreign materials in the raw grains;
the vertical winnowing system is used for vertically winnowing the raw grains subjected to the multi-stage screening to remove light impurity materials and dust in the raw grains;
and also comprises the components connected in sequence
The gravity settling system is used for performing gravity settling on the light and impurity materials and the dust screened by the vertical winnowing system and the light and impurity materials screened by the feeding and sorting system;
the pulse dust removal system is used for filtering and settling light and impurity materials and dust which cannot be settled in the gravity settling system;
and part of light and impurity materials and dust which cannot be settled in the gravity settling system return to the vertical winnowing system along with the air return system to be subjected to secondary vertical winnowing.
2. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the feeding winnowing system comprises a feeding winnowing system shell, a material distribution mechanism and a gravity door, wherein the material distribution mechanism and the gravity door are arranged in the feeding winnowing system shell; the gravity door comprises a central shaft and a door plate which can turn around the central shaft; the door plate is provided with a counterweight lever, so that the gravity door is opened when the raw grains falling on the gravity door exceed the force applied to the door plate by the counterweight lever; the air separation channel is communicated with the feeding air separation system shell, and an inlet of the air separation channel is arranged below the gravity door; the winnowing channel is communicated with the gravity settling system by using a feeding air suction pipe.
3. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the material distributing mechanism is in a triangular pyramid shape, and a buffer plate is obliquely arranged between the material distributing mechanism and the gravity door.
4. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the cylinder screening system comprises a cylinder screen with a high front part and a low back part; the cylindrical screen can rotate along the axis of the cylindrical screen; the cylindrical screen is provided with a plurality of annular screen meshes of various specifications from front to back, and the diameters of the screen meshes of the annular screen meshes are gradually reduced from front to back; the front end of the cylindrical screen is communicated with a discharge port of the feeding winnowing system, and the rear end of the cylindrical screen is communicated with an impurity receiving port of the vibrating screen;
the vibrating screening system is arranged below the cylindrical screening system and comprises a large impurity screening surface, a fine impurity screening surface and a vibrating screen bottom plate which are obliquely arranged from top to bottom in a high-back low manner; the raw grains screened by the most front annular screen mesh of the cylindrical screen fall onto the fine impurity screening surface through a vibrating screen feed hopper; the grains screened by the second to the last annular screen mesh of the cylindrical screen fall onto the large impurity screen surface through the material transfer passage; the cavity above the large impurity screening surface is communicated with a material receiving port of the vibrating screen, the cavity between the bottom plate of the vibrating screen and the fine impurity screening surface is communicated with the material receiving port of the vibrating screen, and the cavity between the large impurity screening surface and the fine impurity screening surface is communicated with the vertical winnowing system.
5. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 4, characterized in that: the cylindrical screen is provided with three specifications of annular screens from front to back, namely a first screen, a second screen and a third screen.
6. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 5, characterized in that: and a plurality of inclined material plates are arranged in the material transfer passage, so that the raw grains passing through the second screen and the third screen are guided to the middle front part of the large impurity screening surface.
7. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the vertical winnowing system comprises a vertical winnowing channel which is vertically arranged; an adjustable air plate for adjusting the cross section width of the vertical air separation channel is arranged in the vertical air separation channel; the upper end of the adjustable air plate is movably connected in the vertical air separation channel, and the lower end of the adjustable air plate is connected with an adjusting bolt; the lower end of the vertical winnowing channel is provided with a grain outlet collecting hopper, and the upper end of the vertical winnowing channel is communicated with a gravity settling system.
8. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the gravity settling system comprises a gravity settling chamber, wherein a vertical partition plate is arranged in the gravity settling chamber, and a gap is formed between the partition plate and the bottom of the gravity settling chamber; the bottom of the gravity settling chamber is provided with a impurity discharging device; the impurity discharging device comprises an impurity discharging auger casing, and the impurity discharging auger casing is provided with an impurity discharging auger; and a trash discharging gravity gate is arranged behind the trash discharging auger and is connected with a trash receiving port of the gravity settling system.
9. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 8, characterized in that: the gravity settling chambers are two, namely a first gravity settling chamber and a second gravity settling chamber which are arranged side by side from left to right; the first gravity settling chamber and the second gravity settling chamber are not communicated with each other; the first gravity settling chamber is communicated with a pulse dust removal system; the air return system is connected to the second gravity settling chamber and comprises an air return fan, a circulating air return pipe and a circulating air equalizing device which are sequentially connected, and the circulating air equalizing device is connected with the vertical winnowing system.
10. The high-efficiency, environment-friendly and energy-saving raw grain impurity removal device according to claim 1, characterized in that: the pulse dust removal system is a suction type pulse filtering dust remover and comprises a pulse dust removal chamber; a vertical partition plate is arranged in the pulse dust removal chamber, and a gap is formed between the partition plate and the bottom of the pulse dust removal chamber; the bottom of the pulse dust removal chamber is provided with a impurity removal device; the pulse dust removal chamber is connected with the gravity settling system through an air suction pipe, and an air suction fan is arranged on the air suction pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436687.3A CN112934706A (en) | 2021-04-22 | 2021-04-22 | Efficient, environment-friendly and energy-saving raw grain impurity removing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110436687.3A CN112934706A (en) | 2021-04-22 | 2021-04-22 | Efficient, environment-friendly and energy-saving raw grain impurity removing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714090A (en) * | 2021-09-07 | 2021-11-30 | 安徽省凯杰机械制造有限公司 | Environment-friendly vibrating screen based on grain processing and using method thereof |
| CN114101060A (en) * | 2021-11-25 | 2022-03-01 | 邢台市天元星食品设备有限公司 | Combined type circulating air flow sorting equipment |
| CN115945389A (en) * | 2023-03-15 | 2023-04-11 | 山东金钟科技集团股份有限公司 | Unprocessed food grains clearance sieve |
-
2021
- 2021-04-22 CN CN202110436687.3A patent/CN112934706A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714090A (en) * | 2021-09-07 | 2021-11-30 | 安徽省凯杰机械制造有限公司 | Environment-friendly vibrating screen based on grain processing and using method thereof |
| CN114101060A (en) * | 2021-11-25 | 2022-03-01 | 邢台市天元星食品设备有限公司 | Combined type circulating air flow sorting equipment |
| CN115945389A (en) * | 2023-03-15 | 2023-04-11 | 山东金钟科技集团股份有限公司 | Unprocessed food grains clearance sieve |
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