CN216764820U - Double-drive three-shaft type annular extractor - Google Patents

Abstract

The utility model discloses a double-drive three-shaft type annular leacher.A plurality of scraping plates higher than a material layer are uniformly arranged on an annular chain in a leacher shell, a head driving shaft provided with a tensioning mechanism is arranged at the lower right corner of the leacher shell, and a head shaft chain wheel is arranged on the head driving shaft; the left lower corner of the extractor shell is provided with a tail driving shaft, a tail shaft chain wheel is arranged on the tail driving shaft, and the tail driving shaft is a fixed shaft and synchronously rotates with the head driving shaft at the same torque; an upper layer idler shaft is arranged at the upper right corner of the leacher shell and is provided with an upper layer idler; a tail arc slideway is arranged at the upper left corner of the leacher shell, and a tail slide carriage is arranged between the lower end of the tail arc slideway and the tail shaft chain wheel; the annular chain is wholly trapezoidal with a narrow top and a wide bottom and is sequentially wrapped on the head shaft chain wheel, the upper layer idler wheel, the upper layer grid plate, the tail arc-shaped slideway, the tail slide carriage and the tail shaft chain wheel. The chain of the extractor has good stress state and long service life, and the draining time of the fresh solvent can be greatly shortened.

Description

Double-drive three-shaft type annular extractor

Technical Field

The utility model relates to a continuous leacher, in particular to a double-drive three-shaft type annular leacher which is used for processing and preparing vegetable oil and also can be used in the industries of food, environmental protection, chemical industry and the like, and belongs to the technical field of extraction devices.

Background

The leacher is the core equipment of the oil making process by the leaching method, and the mass transfer process is completed through the extract liquid or the washing liquid permeating material layer. The reasonable selection of the leacher has very important significance for improving the efficiency of leaching production, reducing the production cost and improving the economic benefit of a leaching oil factory.

Traditionally, the annular leacher is a continuous leacher widely applied in the leaching industry, and has the advantages of simple structure, reasonable process, low failure rate and the like, but also has the following problems:

1. the single shaft is driven, the contact stress at the meshing part of the chain wheel and the chain is large, no lubrication is realized, and the abrasion is serious; even if the number of rows of the chains is increased, the requirements on the materials, processing and manufacturing of the chain wheel and the chains are still extremely high;

2. the chain is not well stressed, and under the dual actions of tension and bending moment, the stress is very large, and the chain breakage phenomenon happens in the process;

3. the structural size of part of the components (head segment and tail arc segment) is large, and the highway transportation is difficult especially after the equipment is large-sized;

4. the heavy scraper is adopted, the requirement on the abrasion resistance of the track is extremely high, and the heavy scraper cannot be purchased at home; due to the limitation of material technology, the large-scale processing of oil materials cannot be realized;

5. the large scraper and the chain at the turning part are stressed seriously and have large stress and deformation and chain breakage risks.

In order to improve the working performance of the traditional annular leacher, a double-drive annular leacher appears in the market, and a driving shaft is respectively arranged at the upper layer and the lower layer, so that the following defects still exist in use:

1. the wrap angle of the upper driving wheel chain is smaller, and the number of meshing teeth of the chain is smaller;

2. the material bed can not be cut apart to low scraper blade structure, and the material bed of low scraper blade top easily forms the monoblock and stabilizes and the higher slab knot of intensity thing, and when the material bed removed upper blanking district and lower floor's blanking district, the difficult whereabouts is called "bridging" phenomenon. Particularly, the bridging phenomenon of the soybean embryo pieces with higher water content is more serious, and the serious bridging phenomenon can cause mechanical damage of equipment;

3. the tail blanking area can not be used as an effective leaching space, but is only used as a falling channel of materials, so that the utilization rate of the effective leaching space is insufficient;

4. at the discharge port, if the material bed formed by the materials is seriously bridged, the meshing of a chain and a chain wheel can be influenced, and the load of a driving system is increased and other adverse conditions are caused;

5. under the action of the resistance of the material layer and the tension of solvent fluid, the solvent has long time to penetrate the material layer; because of the action of liquid tension, the solvent flows slowly or does not flow among the loose wet meals with small gaps; the content of the naturally drained wet meal is about 30%, and the energy consumption of the wet meal in the subsequent desolventizing and drying process is high;

6. the inclination of driping section bottom plate is little, and the solvent flow is little, and the wet dregs of rice powder that leaks down easily silts up, must regularly clear up, and contains and dissolve the material clearance and lead to the solvent loss on the one hand, and on the other hand, the solvent is as inflammable and explosive medium, and misoperation or operation difficulty when clearing up take place the incident occasionally. The cleaning area is large, the cleaning difficulty is increased, and the danger is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art and provide a double-drive three-shaft type annular leacher, which has the advantages of good stress state of a chain, long service life, low failure rate and good working reliability of equipment and can greatly shorten the draining time of a fresh solvent.

In order to solve the technical problems, the double-drive three-shaft type annular extractor comprises an extractor shell, wherein an annular chain is arranged in the extractor shell, a plurality of scraping plates are uniformly arranged on the annular chain, a head driving shaft is arranged at the lower right corner of the extractor shell, a head shaft chain wheel is arranged on the head driving shaft, and a tensioning mechanism is arranged on the head driving shaft; a tail driving shaft is arranged at the lower left corner of the leacher shell, a tail shaft chain wheel is arranged on the tail driving shaft, and the tail driving shaft is a fixed shaft and synchronously rotates with the head driving shaft at the same torque; an upper layer idler shaft is arranged at the upper right corner of the leacher shell and is provided with an upper layer idler; a tail arc slideway is arranged at the upper left corner of the leacher shell, and a tail slide carriage is arranged between the lower end of the tail arc slideway and the tail shaft chain wheel; the whole annular chain is trapezoidal with a narrow upper part and a wide lower part and is sequentially wrapped on the head shaft chain wheel, the upper layer idle wheel, the upper layer grid plate, the tail arc-shaped slideway, the tail slide carriage and the tail shaft chain wheel, and the top of each scraper is higher than the material layer.

As an improvement of the utility model, a feeding section, an upper leaching section, a tail leaching section, a lower leaching section and a draining section are sequentially arranged in the leacher shell along the advancing direction of an annular chain, a forced draining oil hopper is arranged below the draining section, the inner cavity of the forced draining oil hopper is a closed negative pressure cavity, a grid plate covers the upper port of the forced draining oil hopper, the lower port of the forced draining oil hopper is connected with a collecting pipe with an opening at the top, the collecting pipe is provided with a slope, two ends of the collecting pipe extend outwards, two ports of the collecting pipe are respectively covered with a detachable sealing blind plate, and the lowest part of the collecting pipe is connected with a liquid outlet; the three side walls of the forced draining oil bucket are steep side walls, one side wall is a gentle slope side wall, a negative pressure air suction opening is formed in the upper portion of the steep side wall, a flushing pipe extending along the full-width direction of the gentle slope side wall is arranged on the upper edge of the gentle slope side wall, a plurality of spraying openings for flushing the inner wall of the upper portion of the gentle slope side wall are distributed along the length direction of the flushing pipe, and two ends of the flushing pipe extend out of the forced draining oil bucket.

As a further improvement of the utility model, the negative pressure air exhaust port is square, the outer port is connected with the separation chamber, the bottom plate of the separation chamber is in a structure with a high outer part and a low inner part, the top plate of the separation chamber is connected with a vacuum exhaust pipe interface, and the front side wall and the rear side wall of the separation chamber are provided with separation chamber sight glasses.

Compared with the prior art, the utility model has the following beneficial effects: 1. the double-driving shaft is adopted for driving, the wrap angle of the chain on the chain wheel is increased, the number of engaged teeth is more, the contact stress is small, and the abrasion of the tooth profile of the chain roller and the chain wheel is lightened;

2. the high scraper is slightly higher than the material bed, the material bed between the scrapers is divided into independent blocks, no adhesion can be formed between the blocks, and the divided materials can be smoothly discharged in a discharging area;

3. besides being used for the passage of materials and chains, the tail overturning section also plays a role in improving the effective leaching space, and the leached material embryo still carries out the mass transfer (extraction) process in the tail overturning section. The effective leaching time of the leacher with the same size can be increased by 5-20 minutes; the effective leaching time of the medium and small-sized leacher is prolonged remarkably, and the efficiency of equipment is improved.

4. And a negative pressure draining system is arranged, the dissolution content of the wet meal sucked by the negative pressure system is reduced to 25-27%, and the energy consumption of the wet meal in the subsequent desolventizing and drying process is low.

Drawings

The utility model will be described in further detail with reference to the following drawings and detailed description, which are provided for reference and illustration purposes only and are not intended to limit the utility model.

FIG. 1 is a front view of a dual drive three axis annular extractor of the present invention;

FIG. 2 is a working state diagram of the double-drive three-shaft annular extractor of the utility model;

FIG. 3 is an enlarged view of the head of the dual drive three axis annular extractor of the present invention;

FIG. 4 is an enlarged view of the tail of the dual drive three axis annular extractor of the present invention;

FIG. 5 is a first perspective view of the forced oil drain bucket of the present invention;

FIG. 6 is a second perspective view of the forced draining oil bucket of the present invention;

FIG. 7 is a front view of the forced drain oil scoop of the present invention;

FIG. 8 is a top view of FIG. 7 with the louvers hidden;

FIG. 9 is a left side view of FIG. 7;

FIG. 10 is a perspective view of FIG. 7 with the louvers hidden.

In the figure: 1. a material storage box; 2. an endless chain; 3. a head drive shaft; 3a, a head shaft chain wheel; 4. an upper idler shaft; 4a, an upper layer idler wheel; 5. a tail arc-shaped slideway; 6. a tail slide carriage; 7. a tail drive shaft; 7a, a tail shaft chain wheel; 8. a squeegee; 9. a discharge port; 10. forcibly draining the oil bucket; steep sidewall 10 a; 10b, a gentle slope side wall; 10c, cone bucket mirror; 11. reinforcing ribs; 12. a grid plate; 13. a header; a liquid outlet; 14. a sealing blind plate can be disassembled; 14a, an emptying interface; 15. a separation chamber; 15a, vacuumizing a pipe interface; separating chamber view mirrors; 16. a flush tube; spray opening 16a.

Detailed Description

In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not mean that the apparatus must have a specific orientation.

As shown in fig. 1 to 4, the double-drive three-shaft annular extractor of the utility model comprises an extractor shell, wherein an annular chain 2 is arranged in the extractor shell, a plurality of scrapers 8 with the tops higher than a material layer are uniformly arranged on the annular chain 2, and a material bed among the scrapers 8 is divided into independent blocks, so that bridging is avoided, and smooth blanking is facilitated. A head driving shaft 3 is arranged at the lower right corner of the leacher shell, a head shaft chain wheel 3a is arranged on the head driving shaft 3, and a tensioning mechanism is arranged on the head driving shaft 3; a tail driving shaft 7 is arranged at the lower left corner of the leacher shell, a tail shaft chain wheel 7a is arranged on the tail driving shaft 7, and the tail driving shaft 7 is a fixed shaft; an upper layer idler shaft 4 is arranged at the upper right corner of the leacher shell, and an upper layer idler 4a is arranged on the upper layer idler shaft 4 and used for lifting the loose edge of the chain and realizing the reversing of the chain at the head. A tail arc slideway 5 is arranged at the upper left corner of the extractor shell, and a tail slide carriage 6 is arranged between the lower end of the tail arc slideway 5 and a tail shaft chain wheel 7 a; the annular chain 2 is wholly trapezoidal with narrow top and wide bottom and is sequentially wrapped on the head shaft chain wheel 3a, the upper layer idle wheel 4a, the upper layer grid plate, the tail arc slideway 5, the tail slide carriage 6 and the tail shaft chain wheel 7a.

Two drive shafts are arranged at the front and rear parts of the lower-layer box body, the wrap angle of the chain is increased, the number of teeth meshed with each other is large, the contact stress is small, and the abrasion of the chain roller and the tooth profile of the chain wheel is lightened. The driving shaft on the upper layer of the tail part is moved to the lower layer, a tail part driven shaft is omitted, the structure is simplified, and a tail wheel wrap angle is increased.

The head driving shaft 3 and the tail driving shaft 7 are driven by the same set of hydraulic driving device and share one hydraulic pump station, so that synchronous and same-torque operation is realized. Compared with a single driving chain, the load is reduced by half, the abrasion of the chain and the chain wheel is reduced by more than half, and the reliability of the chain is greatly improved.

The tail driving shaft 7 is not provided with a tensioning mechanism, so that the descending chain is well attached to the tail arc-shaped slide way 5 and the tail slide carriage 6, and the material is guaranteed to move along a set path. The tail driving shaft 7 drives the upper-layer chain to realize the movement of the upper-layer materials. The head driving shaft 3 is provided with a tensioning mechanism, so that proper tensioning of the whole circle of chain can be realized. The head driving shaft 3 drives the lower layer chain and the material to move towards a discharge hole 9 positioned below the head. The position of the driving chain wheel at the discharge port 9 is higher than the material bed, the position of the tail driving wheel is also higher than the material bed, and the meshing of the chain and the chain wheel is not interfered.

A feeding section, an upper leaching section, a tail leaching section, a lower leaching section and a draining section are sequentially arranged in the leaching device shell along the advancing direction of the annular chain 2, and a forced draining oil hopper 10 is arranged below the draining section. The storage box 1 is positioned above the extractor shell and close to the head, and a section of material column with higher height is stacked in the storage box 1 to ensure that the upper extraction section reaches the set material layer height. The annular chain 2 advances along the tail arc slide way 5 and the tail slide board 6 at the tail part, so that the tail part structure is changed from a pure chute into a leaching space capable of storing materials, and the leaching time can be increased by 10-25%. The leaching time of a shallow layer of a conventional leacher is usually 40-55min, and the effective leaching time of the leacher with the same size can be increased by 5-20 min (for example, the effective leaching time of a 4000TPD leacher is increased by 6 min, the effective leaching time of a 1000TPD leacher is increased by 10 min, and the effective leaching time of a 500TPD leacher is increased by 20 min).

As shown in fig. 5 to 10, the forced draining oil bucket 10 is a square cone bucket, and the inner cavity is a closed negative pressure cavity, the upper port of the forced draining oil bucket 10 is covered with a grid plate 12 for supporting and draining materials, the lower port of the forced draining oil bucket 10 is connected with a collecting pipe 13 with an open top, the collecting pipe 13 is provided with a slope, two ends of the collecting pipe 13 extend outwards, two ports of the collecting pipe 13 are respectively covered with a detachable sealing blind plate 14, and the lowest part of the collecting pipe 13 is connected with a liquid outlet 13a.

Three side walls of the forced draining oil bucket 10 are steep side walls 10a, one side wall is a gentle slope side wall 10b, a negative pressure air suction opening is formed in the upper portion of one steep side wall 10a, a flushing pipe 16 extending along the full width direction of the gentle slope side wall 10b is arranged on the upper edge of the gentle slope side wall 10b, a plurality of spraying openings 16a for flushing the inner wall of the upper portion of the gentle slope side wall 10b are distributed along the length direction of the flushing pipe 16, and two ends of the flushing pipe 16 extend out of the forced draining oil bucket 10. The outer wall of the forced draining oil bucket 10 is provided with a reinforcing rib 11 to improve the strength.

The negative pressure extraction opening is square, the outer port is connected with the separation chamber 15, the bottom plate of the separation chamber 15 is of a structure with high outside and low inside, the top plate of the separation chamber 15 is connected with a vacuumizing pipe connector 15a, and the front side wall and the rear side wall of the separation chamber 15 are provided with separation chamber sight glasses 15b. Can set up a reserve extraction opening in the opposite of negative pressure extraction opening, be convenient for choose for use as required according to the condition.

The leaching device forcibly drains the oil hopper, changes a simple gradient plate into a closed negative pressure cavity, and forms a negative pressure oil hopper; the periphery of the forced draining oil bucket 10 is closed, the grid plate 12 is arranged at the upper part, liquid and gas pass through narrow slits, and solid powder is reduced to the greatest extent to leak into the cone bucket.

Under the negative pressure suction effect of the vacuum pumping pipe connector 15a, gas-phase media enter the separation chamber 15, a small amount of entrained oil flows back to the forced draining oil hopper 10 along the bottom plate with the gradient, the separation chamber sight glass 15b is arranged to facilitate observation of the separation condition during vacuum pumping, and can also be used as a manhole to facilitate cleaning of silt. The draining speed of the fresh solvent is greatly improved and the draining time is shortened by the forced negative pressure suction effect; overcomes the surface tension effect of the solvent, forcibly extracts the solvent in the loose wet meal with small gaps, and reduces the solvent content of the wet meal. The content of the naturally drained wet meal is about 30 percent, the content of the wet meal can be reduced to 25 to 27 percent under the suction action of a forced draining oil hopper under the suction action of a negative pressure system, and the energy consumption of the wet meal is lower in the subsequent desolventizing and drying process.

After a small amount of wet dregs of rice powder leaks into the awl fill, be detained at the awl fill lateral wall easily, this device will force the dripdrying oil fill 10 to set to trilateral precipitous, the gentle eccentric structure of one side, be convenient for wet dregs of rice powder under self action of gravity along trilateral precipitous lateral wall 10a directly slide in the header 13, trilateral precipitous lateral wall 10a needn't set up washing unit, the simplified structure. The contradiction is concentrated on the gentle slope side wall 10b, and wet meal powder falling on the gentle slope side wall 10b is difficult to flow downwards automatically due to the gentle slope; circulating oil is sprayed out from each spraying port 16a of the flushing pipe 16, and in the process that the oil flows downwards, the gentle slope side wall 10b is flushed, and wet meal powder is flushed into the collecting pipe 13. The collecting pipe 13 is a large pipe with gradient, which guides the collected liquid and powder to the liquid outlet 13a for discharging, and is provided with a detachable sealing blind plate for facilitating the cleaning.

The lower part of the detachable blind plate at the lower end of the collecting pipe 13 is connected with a emptying interface 14a, so that residual oil in the oil bucket can be emptied thoroughly when the vehicle is stopped or the variety is changed. The steep side wall 10a of the forced draining oil hopper 10 is also provided with a cone-shaped bucket sight glass 10c, so that the liquid level and the silt condition can be observed conveniently, and the cone-shaped bucket sight glass 10c can be removed to clean up when necessary.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims (3)

1. The utility model provides a ware is leached to two three shaft types of driving annular, includes and leaches the ware casing, be equipped with the annular chain in leaching the ware casing, evenly install a plurality of scraper blades, its characterized in that on the annular chain: a head driving shaft is arranged at the lower right corner of the leacher shell, a head shaft chain wheel is mounted on the head driving shaft, and the head driving shaft is provided with a tensioning mechanism; a tail driving shaft is arranged at the lower left corner of the extractor shell, a tail shaft chain wheel is installed on the tail driving shaft, and the tail driving shaft is a fixed shaft and synchronously rotates with the head driving shaft at the same torque; an upper layer idler shaft is arranged at the upper right corner of the leacher shell and is provided with an upper layer idler; a tail arc slideway is arranged at the upper left corner of the leacher shell, and a tail slide carriage is arranged between the lower end of the tail arc slideway and the tail shaft chain wheel; the whole annular chain is trapezoidal with a narrow upper part and a wide lower part and is sequentially wrapped on the head shaft chain wheel, the upper layer idle wheel, the upper layer grid plate, the tail arc-shaped slideway, the tail slide carriage and the tail shaft chain wheel, and the top of each scraper is higher than the material layer.

2. The dual drive three axis annular extractor of claim 1, wherein: a feeding section, an upper leaching section, a tail leaching section, a lower leaching section and a draining section are sequentially arranged in the leacher shell along the advancing direction of the annular chain, a forced draining oil hopper is arranged below the draining section, the inner cavity of the forced draining oil hopper is a sealed negative pressure cavity, a grid plate covers the upper port of the forced draining oil hopper, the lower port of the forced draining oil hopper is connected with a collecting pipe with an opening at the top, the collecting pipe is provided with a slope, two ends of the collecting pipe extend outwards, two ports of the collecting pipe are respectively covered with a detachable sealing blind plate, and the lowest part of the collecting pipe is connected with a liquid outlet; the three side walls of the forced draining oil bucket are steep side walls, one side wall is a gentle slope side wall, a negative pressure air suction opening is formed in the upper portion of the steep side wall, a flushing pipe extending along the full-width direction of the gentle slope side wall is arranged on the upper edge of the gentle slope side wall, a plurality of spraying openings for flushing the inner wall of the upper portion of the gentle slope side wall are distributed along the length direction of the flushing pipe, and two ends of the flushing pipe extend out of the forced draining oil bucket.

3. The dual drive three axis annular extractor of claim 2, wherein: the negative pressure extraction opening is square, an outer port of the negative pressure extraction opening is connected with the separation chamber, a bottom plate of the separation chamber is of a structure with a high outer part and a low inner part, a top plate of the separation chamber is connected with a vacuumizing pipe connector, and front and rear side walls of the separation chamber are provided with separation chamber sight glasses.

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