CN115581942A

CN115581942A - Step tunnel type leacher

Info

Publication number: CN115581942A
Application number: CN202211266808.5A
Authority: CN
Inventors: 尹越峰; 荣臻; 梁椿松; 温小荣
Original assignee: Myande Group Co Ltd
Current assignee: Myande Group Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-01-10
Also published as: WO2024082483A1

Abstract

The invention discloses a step tunnel type leacher which comprises a sealed box body, wherein the rear end of the box body is a feeding end, the front end of the box body is provided with a discharging port, a multi-stage soaking unit is sequentially arranged in an inner cavity of the box body from front to back, each stage of soaking unit respectively comprises a soaking groove, a lower shaft and an upper shaft, each lower shaft is respectively positioned at the bottom of the same stage of soaking groove, each stage of upper shaft is respectively positioned above the previous stage of soaking groove, and a conveying chain is wound between each lower shaft and each upper shaft. The first stage soaks the groove and is close to the discharge gate, soaks the groove at different levels and includes wall panel, arc bottom and the inclined bottom plate even as an organic whole in proper order respectively, and this level lower shaft submergence is in the arc bottom of this level soaks the groove, and the upper end of inclined bottom plate extends to the rear side of this level upper shaft, and the inclined bottom plate below in the groove is soaked to the back level is connected to the upper end of wall panel. The conveying chain is S-shaped and sequentially bypasses the lower shafts and the upper shafts at all levels. According to the cascade tunnel type leacher, solid materials and extraction liquid can be in full-countercurrent long-flow contact, the mass transfer process is strengthened, short circuit of a solvent cannot occur, and the extraction efficiency is high.

Description

Step tunnel type leacher

Technical Field

The invention relates to a leacher, in particular to a step tunnel type leacher, and belongs to the technical field of extraction equipment.

Background

Extraction equipment is often used for extracting oil or other effective components, and the extraction equipment on the market is various and comprises a fixed bed type, a moving bed type, a basket type and a filter drum type. The general principle is that solids are naturally piled up to form a stable material bed or the stable material bed is forcibly formed, extraction liquid or washing liquid is poured in from the upper part of the material bed, and liquid permeates the material layer to complete the mass transfer process.

The Chinese patent with the publication number of CN 104474735B discloses a continuous extraction device and a process. The extraction tank is sealed, N groups of chain scraper devices are obliquely arranged in the extraction tank, each group of chain scraper devices respectively comprises an upper shaft and a lower shaft, the upper shafts and the lower shafts in the same group and at the same end are in transmission connection through a single-ring chain, and scrapers are uniformly fixed on the chain; each group of chain scraper devices are mutually independent and rotate in a closed loop respectively. An extraction material inlet and a solvent inlet are arranged at different positions of the upper part of the extraction tank, and an extraction liquid outlet and an extraction material outlet are respectively arranged at two ends of the extraction tank.

The extraction device has the following problems: 1. most of the solid materials are in laminar contact with the extraction liquid, so that the solid materials and the extraction liquid are not fully mixed;

2. the extract liquid flows automatically through the fall, the light phase is positioned at the upper part of the liquid layer, and the short circuit is easy to occur in new solution;

3. the solid materials are not obviously drained, and more concentrated extraction solution is mixed in the materials pushed and climbed by the scraper, so that the concentration of the solvent on the low-concentration side is increased, the extraction power is reduced, and the extraction efficiency is reduced;

4. the extraction path is seemingly long, but the utilization rate of the upper-layer sieve surface of each group of leaching units is very low;

5. a plurality of speed reducers are required to drive, and usually at least a feeding speed reducer, a main driving speed reducer and a discharging speed reducer are arranged, wherein the main driving speed reducer provides power for the middle groups of chain scraper devices together;

6. the three speed reducers have different output rotating speeds, and in order to prevent material blockage caused by excessive feeding or too slow discharging, the rotating speed of the discharging end speed reducer is higher, the rotating speed of the feeding end speed reducer is lower, and the rotating speed of the main driving speed reducer is between feeding and discharging, so that speed regulation control needs to be respectively carried out;

7. each extraction unit is provided with a group of single-circle chains, namely each circle of chains is provided with a group of driving shafts and guide shafts which rotate respectively, the number of dynamic seals is large, and the bearing seats are arranged externally, so that the sealing difficulty and the leakage risk are increased; the extraction solvent is typically hexane, methanol (or ethanol), ether, acetone, or other flammable, explosive, or even toxic organic substances, and leakage may cause explosion risk and increase the operation cost.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide the step tunnel type leacher, solid materials and extraction liquid can be in full-countercurrent long-flow contact, the mass transfer process is strengthened, the solvent cannot be short-circuited, and the extraction efficiency is high.

In order to solve the technical problems, the step tunnel type leacher comprises a sealed box body, wherein the rear end of the box body is a feeding end, the front end of the box body is provided with a discharging port, a plurality of stages of soaking units are sequentially arranged in the cavity of the box body from front to back, each stage of soaking unit respectively comprises a soaking groove, a lower shaft and an upper shaft, each lower shaft is respectively positioned at the bottom of the soaking groove at the same stage, each stage of upper shaft is respectively positioned above the soaking groove at the previous stage, and a conveying chain is wound between the lower shaft and the upper shaft.

As an improvement of the invention, the first stage soaking tank is close to the discharge port, each stage soaking tank respectively comprises a wall plate, an arc bottom and an inclined bottom plate which are sequentially connected into a whole, the lower shaft of the stage is immersed in the arc bottom of the stage soaking tank, the upper end of the inclined bottom plate extends towards the rear side of the upper shaft of the stage, and the upper end of the wall plate is connected below the inclined bottom plate of the next stage soaking tank.

As a further improvement of the invention, the upper parts of all levels of inclined bottom plates except the first level are respectively provided with a filtering grid plate, and the heights of the lower edges of the filtering grid plates are gradually reduced from front to back and are all higher than the top of the wallboard.

As a further improvement of the invention, each stage of soaking unit is also respectively provided with a baffle plate, each baffle plate is a solid plate parallel to each stage of inclined bottom plate, the upper end of the baffle plate is higher than the liquid level, and the lower end of the baffle plate extends into the lower part of the soaking tank.

As a further improvement of the invention, the baffle plate of the current stage extends from the front side of the upper shaft of the next stage to the top of the lower shaft of the current stage.

As a further improvement of the invention, the first-stage upper shaft is positioned above the discharge port, the conveying chain is S-shaped and sequentially and alternately bypasses the conveying chain wheels of the lower shafts and the upper shafts at each stage, and bypasses the conveying chain wheel of the upper shaft at the first stage and then bypasses the conveying chain wheel of the lower shaft at the last stage through the guide slide rail at the feeding side to form a closed loop, and the scraping plates are uniformly arranged along the perimeter of the conveying chain.

As a further improvement of the invention, the baffle plates at each stage and the lower end surface of the inclined bottom plate at the next stage form a downlink tunnel of materials, and form an uplink tunnel of materials with the upper end surface of the inclined bottom plate at the previous stage; the scraper plate moves downwards along the baffle plate and moves upwards along the inclined bottom plate.

As a further improvement of the invention, the planes of the axial lines of the lower shaft and the upper shaft of the stage are intersected with the inclined bottom plate and the baffle plate of the stage at acute angles; the upper end of the inclined bottom plate is higher than the horizontal plane where the axis of the upper shaft is located, and the upper end of the baffle plate is close to the horizontal plane where the axis of the upper shaft is located.

As a further improvement of the invention, the upper part of the front side of the box body is provided with a new solution spraying pipe, and the new solution is sprayed on the middle section of the inclined bottom plate of the first-stage soaking tank; the liquid level of the previous stage soaking tank is higher than that of the next stage soaking tank, the rear wall of the last stage soaking tank is provided with a concentrated dissolution port, the front side of the concentrated dissolution port is provided with a baffle plate which is stretched into the liquid level, and a concentrated mixing settlement area is formed between the baffle plate and the rear wall of the last stage soaking tank.

As a further improvement of the invention, a solid material feeding hole is arranged at the rear part of the top wall of the box body and is positioned above the final-stage baffle plate; the feeding device is characterized in that a semi-fluid material feeding hole is formed in the front of the solid material feeding hole, a feeding platform is arranged below the semi-fluid material feeding hole, and the feeding platform is located above the last-stage upper shaft.

As a further improvement of the invention, the first-stage upper shaft is higher than the upper shafts of all stages, and a discharge side guide slide rail supported below the conveying chain is arranged below the rear side of the first-stage upper shaft; the feeding side guide slide rail is positioned on the front side of the solid material feeding hole and above the rear side of the last-stage upper shaft.

As a further improvement of the invention, a certain upper shaft is used as a main driving shaft, and the main driving shaft is driven by a speed reducer; the other part or all of the upper shafts are used as auxiliary driving shafts which are synchronously driven by the main driving shaft; the auxiliary driving chain wheel is arranged at the shaft end of the auxiliary driving shaft through an expansion sleeve.

As a further improvement of the invention, a feeding adjusting gate is arranged above and behind the last-stage baffle plate, the feeding adjusting gate comprises a worm gear driver, a hand wheel is mounted at the worm shaft driving end of the worm gear driver, a transmission shaft is fixed at the worm gear center of the worm gear driver, the middle section of the transmission shaft is supported at the center of a gate flange sealing plate in a sealing manner through a transmission shaft bearing seat, a transmission sleeve is fixed at the inner end of the transmission shaft, a driving swing plate is fixedly connected to the periphery of the transmission sleeve, the free end of the driving swing plate is fixedly connected to one end of an arc-shaped gate plate, the other end of the arc-shaped gate plate is fixedly connected to a driven swing plate, the fixed end of the driven swing plate is fixedly connected to a driven shaft, and the driven shaft is supported in a driven end bearing seat and is coaxial with the transmission shaft.

As a further improvement of the invention, a casing of the worm gear driver is fixedly connected with a stopping arm, the stopping arm is fixedly connected with a transmission shaft bearing seat support lug on the outer wall of the transmission shaft bearing seat through a bolt, the middle part of the transmission shaft bearing seat is welded in a central hole of the gate flange sealing plate, a sealing plate positioning boss is arranged on the inner end surface of the gate flange sealing plate, and the radius of the sealing plate positioning boss is larger than the turning radius of the arc-shaped gate plate.

Compared with the prior art, the invention has the following beneficial effects: 1. the solvent and wet dregs always ensure countercurrent soaking contact in the tunnel formed by the inclined bottom plate and the baffle plate, and the forced mass transfer process is carried out, so that high extraction power is always kept.

2. After newly dissolving and entering the first-stage soaking tank, the liquid level difference is utilized to automatically overflow backwards step by step, and the liquid flows in a zigzag way through the baffle plate, so that the effective working path is long, the extraction units are fully contacted with materials for mass transfer, and the short circuit phenomenon of flowing along the surface can not occur.

3. The materials are subjected to the steps of soaking, solid-liquid mixing, fishing out, washing, draining and the like in each extraction unit, the solid materials finally enter a first-stage soaking tank, are fully mixed with a fresh solvent, are fished out by a scraper and drained, and are discharged out of the machine.

4. The solid material after each stage of extraction has an obvious draining section on the inclined bottom plate, and concentrated extraction liquid in the solid material is fully drained before the solid material enters the next stage of soaking, so that concentration gradient is easily formed in each stage of soaking pool, and the extraction liquid has larger extraction power; a baffling channel is added to each stage of extraction liquid, the flow of liquid is more orderly and reasonable, the extraction principle is fully conformed, the extraction efficiency can be improved by more than 20 percent, and the preferential extraction process aiming at powdery or semi-fluid solid materials can be formed.

5. The mutually independent conveying chains of all extraction units are integrated into a group of shared built-in conveying chains, the solid materials move along with the conveying chains through multi-shaft guide turning, and the whole machine can realize reliable transmission by using a single speed reducer, so that the structure is simple, the material blocking risk is small, the control is convenient, and the fault points are few; meanwhile, the manufacturing cost and the maintenance cost are reduced, and the reliability of the equipment is improved.

6. Even under the condition that the external transmission chain has abnormal working conditions, the internal transmission chain can still reliably run, thereby avoiding causing failure emergency stop and improving the reliability and the safety of the equipment.

7. Aiming at the dangerous environment of flammable and explosive organic solvents built in the extraction equipment, the sealing difficulty and the leakage risk are reduced, and the production environment is improved.

8. A large number of mixed oil circulating pumps, complex pipelines and control systems are omitted, the use is simple and convenient, and the operating cost is low. The equipment has the advantages of simple internal structure, high strength, strong adaptability to materials, simple and convenient operation and use, low requirement on maintenance and suitability for being used in underdeveloped areas or crude environments.

9. The skid-mounted type oil drilling device has the advantages that the skid-mounted type oil drilling device meets the use requirements, is compact in overall dimension, strictly controls the length, the width and the height of equipment, can be transported by common vehicles, is convenient to transport on roads, is high in maneuverability, and meets the requirements of mobile operation of petroleum drilling wastes and the like.

Drawings

The invention 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 invention.

FIG. 1 is a front view of the stepped tunnel extractor of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of the stepped tunnel extractor of the present invention;

FIG. 4 is a perspective view of the stepped tunnel extractor of the present invention;

FIG. 5 is an enlarged perspective view of a certain immersion tank of the present invention;

FIG. 6 is a perspective view of the drive mechanism of the present invention;

FIG. 7 is a cross-sectional view of the auxiliary drive sprocket of the present invention;

FIG. 8 is a perspective view of the stall warning mechanism of the present invention;

FIG. 9 is a front view of the lower shaft of the present invention;

FIG. 10 is a left side view of FIG. 9;

FIG. 11 is a perspective view of the lower shaft of the present invention;

FIG. 12 is a cross-sectional view of FIG. 11;

FIG. 13 is a front view of the feed adjustment gate of the present invention;

FIG. 14 is a top view of FIG. 13;

FIG. 15 is a left side view of FIG. 13;

figure 16 is an enlarged view of the drive end of figure 14;

fig. 17 is a perspective view of fig. 13.

In the figure: 1. a box body; 1a, a solid material feeding hole; 1b, a semi-fluid material feeding hole; 1c, a feeding platform; 1d, discharging a material outlet; 1e, an overflow port of the box body; 1f, a free gas interface; 1g, an access door; 1h, horizontally supporting the rail; 1j, a guide slide rail at the feeding side; 1k, a discharge side guide slide rail; 1m, a temporary storage hopper;

2. a feed adjusting gate; 2a, a hand wheel; 2b, a worm gear driver; 2b1, stopping the rotating arm; 2c, a transmission shaft; 2c1, locking the nut; 2d, a transmission shaft bearing seat; 2d1, a bearing seat support lug of the transmission shaft; 2d2. A gland; 2d3, bearing bush; 2d4. A transmission shaft sealing ring; 2e, a transmission sleeve; 2f, driving a swing plate; 2g, arc gate plates; 2h, rib plates; 2h1, emptying the gap; 2j, driven swing plate; 2k, a driven shaft; 2m, driven end bearing seat; 2n, gate flange seal plate; 2n1, sealing plate positioning bosses; 2p, sealing gaskets of the gate sealing plate;

3. a soaking tank; 3a, wallboard; 3b, arc bottom; 3c, a sloping bottom plate; 3d, filtering a grid plate; 3e, a concentrated solution outlet; 4. a baffle plate; 5. a striker plate; 6. a concentrated mixing and settling zone;

7. a lower shaft; 7a, a lower shaft conveying chain wheel; 7b, a left-hand bushing; 7b1. Left-hand thread; 7c, right-handed rotating the bush; 7c1. Right-hand threads; 7d, sliding bearings; 7d1. Sliding bearing outer flange; 7e, a lower shaft bearing seat; 7e1, a lower shaft bearing block outer flange; 7e2, a lower shaft bearing seat screw; 7f, sealing a disc by a lower shaft flange; 7g, sealing the cover; 7g1, covering an inner convex ring of the cover; 7g2, blank cap screw; 7g3, sealing the cover with a sealing gasket; 7h, sealing gaskets of the lower shaft bearing seat; 7j, sealing the flange plate of the lower shaft;

8. an upper shaft; 8a, an upper shaft conveying chain wheel; 8-1. Main drive shaft; 8-1a, a large chain wheel; 8-1b. A main drive sprocket; 8-2. Auxiliary driving shaft; 8-2a, a sensing piece; 8-2b proximity switches; 8-3, discharging the material shaft;

9. an auxiliary drive sprocket; 9a, expanding the inner conical surface; 9b, expanding the sleeve by an external conical surface; 9c, expanding the screw; 10. a speed reducer; 11. a speed reducer transmission chain; 12. an auxiliary transmission chain; 13. a conveying chain; 13a, a scraper; 14. emptying the pipe; 15. a new solution spray pipe.

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. The text refers to the position close to the solid feed inlet as the back and the position close to the discharge outlet as the front.

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 6, the step tunnel type leacher comprises a tank body 1, wherein the rear end of the tank body 1 is a feeding end, the front end of the tank body 1 is provided with a discharging port 1d with a downward opening, the interior of the tank body 1 is a solvent environment, and all connecting surfaces, flanges and the like meet the air tightness requirement. The shell body is provided with an integral flange connecting surface, and the functions of strengthening the rigidity of the shell body, improving the manufacturing precision and improving the sealing and sealing are achieved. The inner cavity of the box body is provided with a plurality of stages of soaking units from front to back, the first stage of soaking unit is close to the discharge port 1d, and the last stage of soaking unit is positioned at the rear end of the box body.

Each stage of soaking unit comprises a soaking groove 3, a baffle plate 4, a lower shaft 7 and an upper shaft 8 respectively, the soaking groove 3 comprises a wallboard 3a, an arc-shaped bottom 3b and an inclined bottom plate 3c which are sequentially connected into a whole, the arc-shaped bottom 3b contains the lower shaft 7 of the stage, the upper shaft 8 of the stage is respectively positioned above the soaking groove of the previous stage, and the upper shaft of the first stage is positioned above a discharge port 1d. The upper end of the inclined bottom plate 3c extends to the rear side of the upper shaft 8 of the current stage, and the upper end of the wall plate 3a is connected below the inclined bottom plate 3c of the soaking tank of the next stage.

Lower shaft conveying chain wheels 7a are respectively installed at two ends of each level of lower shaft 7, which are positioned in the soaking tank, and the shapes of the bottoms of the arc-shaped bottoms 3b and the lower shaft conveying chain wheels 7a are matched, so that the lower shaft conveying chain wheels 7a can freely rotate in the arc-shaped bottoms 3b of the soaking tank.

The two ends of each level of upper shaft 8, which are positioned in the box body 1, are respectively provided with an upper shaft conveying chain wheel 8a, the same conveying chain 13 sequentially and alternately bypasses each level of lower shaft conveying chain wheel 7a and upper shaft conveying chain wheel 8a in an S shape, and after bypassing the first level of upper shaft conveying chain wheel 8a, the upper shaft conveying chain wheel passes through a horizontal no-load section and bypasses the last level of lower shaft conveying chain wheel 7a again through a feeding side guide slide rail 1j to form a closed loop, and scraping plates are uniformly arranged along the perimeter of the conveying chain 13.

The feeding side guide slide rail 1j is positioned at the front side of the solid material feeding port 1a and above the rear side of the last-stage upper shaft. The last lower shaft is positioned at the rear side of the solid material feeding port 1a and below the conveying chain 13.

A horizontal supporting rail 1h is arranged between the feeding side guide slide rail 1j and the discharging shaft and is supported below the conveying chain 13 of the horizontal no-load section.

As the position of the first-stage upper shaft as the discharging shaft 8-3 is higher and can be further forward, a discharging side guide slide rail 1k is arranged below the rear side of the discharging shaft 8-3 and is supported below the conveying chain 13.

The inclined bottom plate 3c is parallel to a tangent line between the front side of the lower shaft conveying chain wheel 7a of the current stage and the rear side of the upper shaft conveying chain wheel 8a of the current stage, and the lower edge of the scraper plate moves downwards along the baffle plate 4 and moves upwards along the inclined bottom plate 3c.

The conveying chain 13 goes upward along a tangent line between the front side of the current-stage lower shaft conveying chain wheel and the rear side of the current-stage upper shaft conveying chain wheel 8a, and goes downward along a tangent line between the front side of the current-stage upper shaft conveying chain wheel 8a and the rear side of the previous-stage lower shaft conveying chain wheel. The plane of the axis of the lower shaft of the stage and the axis of the upper shaft of the stage are intersected with the inclined bottom plate and the baffle plate 4 of the stage at acute angles.

Taking six-stage extraction as an example, a first-stage soaking tank is close to the discharge port 1d, a sixth-stage soaking tank is far away from the discharge port 1d, the first-stage lower shaft is positioned at the bottom of the first-stage soaking tank, the second-stage lower shaft is positioned at the bottom of the second-stage soaking tank, and so on, and the sixth-stage lower shaft is positioned at the bottom of the sixth-stage soaking tank.

The sixth-level upper shaft is positioned at the position, close to the front, above the fifth-level soaking groove, the fifth-level upper shaft is positioned at the position, close to the front, above the fourth-level soaking groove, and so on, the second-level upper shaft is positioned at the position, close to the front, above the first-level soaking groove, and the heights of the second-level upper shaft and the sixth-level upper shaft are the same. The first-stage upper shaft is used as a discharging shaft 8-3, the axial height of the first-stage upper shaft is higher than that of the second-stage upper shaft, the second-stage upper shaft and the sixth-stage upper shaft, and the first-stage upper shaft is located above the discharging port 1d.

After the conveying chain 13 winds around a conveying chain wheel of a sixth-level lower shaft from top to bottom, the conveying chain turns to an upward inclined conveying chain wheel and winds around a sixth-level upper shaft, then turns to a downward inclined conveying chain wheel and winds around a fifth-level lower shaft, turns to an upward inclined conveying chain wheel and winds around a fifth-level upper shaft again, and so on, after the conveying chain wheel of a second-level upper shaft is wound, the conveying chain 13 turns to a downward inclined conveying chain wheel and winds around a first-level lower shaft, turns to an upward inclined conveying chain wheel again, enters a first-level upper shaft, namely a conveying chain wheel of the discharging shaft 8-3 after being turned by the discharging shaft conveying chain wheel, enters a no-load horizontal section to advance to a feeding side, and then turns to a closed loop by the conveying chain wheel which winds around the sixth-level lower shaft downwards in an inclined manner after being turned by the feeding side guide slide rail 1j.

Conveying chains 13 on two sides of an inner cavity of the box body 1 are all whole chains to form a group, two ends of a scraper 13a are respectively fixed on corresponding chain links of the conveying chains 13 and are uniformly arranged along the circumference of the conveying chains 13, and the scraper 13a pushes materials to advance along with the rotation of the conveying chains 13.

As shown in fig. 6, since each stage of soaking units shares one set of conveying chain 13, there is no speed difference along the circumference of conveying chain 13, and the risk of material blockage is greatly reduced. The device is driven by a single speed reducer 10, so that a control system is greatly simplified.

In order to reduce the stress of the conveying chain 13 in the box body, reduce abrasion and improve reliability, external series transmission chain transmission is adopted. That is, the speed reducer 10 transmits the torque to the main driving shaft 8-1, and the main driving shaft 8-1 is transmitted to the auxiliary driving shaft 8-2 through the auxiliary transmission chain 12, thereby ensuring that the conveying chain 13 in the box body is always in an extremely small load state and realizing extremely high reliability.

Example one

The speed reducer 10 is installed at the feed end of the top of the box body, the upper shaft close to the feed end, for example, the sixth-stage upper shaft is used as a main driving shaft 8-1, and the upper shaft in the middle and the upper shaft close to the discharge end are used as auxiliary driving shafts 8-2.

The shaft end of the main driving shaft 8-1 is provided with a large chain wheel 8-1a and a main driving chain wheel 8-1b, the shaft end of the auxiliary driving shaft 8-2 is provided with an auxiliary driving chain wheel 9, an output chain wheel of the speed reducer 10 is connected with the large chain wheel 8-1a of the main driving shaft 8-1 through a speed reducer transmission chain 11, and the main driving chain wheel 8-1b of the main driving shaft 8-1 is connected with the auxiliary driving chain wheel 9 on the auxiliary driving shaft 8-2 through an auxiliary transmission chain 12.

The speed reducer 10 drives a large chain wheel 8-1a on the main driving shaft 8-1 through a speed reducer transmission chain 11, so that the torque is transmitted to the main driving shaft 8-1 while speed reduction is realized, and the main driving chain wheel 8-1b drives the auxiliary driving chain wheel 9 and the auxiliary driving shaft 8-2 to rotate through an auxiliary transmission chain 12. For example, the sixth-stage upper shaft drives the fourth-stage upper shaft to rotate through the auxiliary transmission chain 12, and the fourth-stage upper shaft drives the second-stage upper shaft to rotate through the auxiliary transmission chain 12.

Example two

The speed reducer is arranged at the discharge end of the top of the box body, an upper shaft close to the discharge end, such as a second-stage upper shaft, is used as a main driving shaft, and the upper shaft in the middle and the upper shaft close to the feeding end are used as auxiliary driving shafts 8-2.

The speed reducer drives a second-stage upper shaft serving as a main driving shaft to rotate, the second-stage upper shaft drives a fourth-stage upper shaft to rotate through an auxiliary transmission chain, and the fourth-stage upper shaft drives a sixth-stage upper shaft to rotate through the auxiliary transmission chain.

EXAMPLE III

The speed reducer is arranged in the middle of the top of the box body, an upper shaft close to the middle extraction unit, such as a fourth-stage upper shaft, is used as a main driving shaft, and an upper shaft close to the feeding end and an upper shaft close to the discharging end are used as auxiliary driving shafts 8-2.

The speed reducer drives the fourth-stage upper shaft to rotate, the fourth-stage upper shaft drives the second-stage upper shaft to rotate forwards through the auxiliary transmission chain, and meanwhile, the sixth-stage upper shaft is driven to rotate backwards through the auxiliary transmission chain.

The baffle plate 4 is a solid plate, is inserted in each soaking tank, is parallel to each level of inclined bottom plate 3c, the upper end of the baffle plate is higher than the liquid level, and the lower end of the baffle plate extends into the lower part of the soaking tank, so that the extract liquor in the front part of the soaking tank is forced to bypass the lower edge of the baffle plate 4 and can reach the rear part of the soaking tank after being fully contacted and exchanged with the materials, and the flow path length of the extract liquor is prolonged. The upper layer low concentration extraction liquid is prevented from flowing backwards directly, the effective working path is long, and the short circuit phenomenon is avoided.

The baffle plates 4 at each stage have another function, and form a downward tunnel for materials with the lower end surface of the next-stage inclined bottom plate and form an upward tunnel for materials with the upper end surface of the previous-stage inclined bottom plate. The countercurrent contact of the solute in the tunnel formed by the inclined bottom plate of the soaking tank and the baffle plate 4 is ensured, the tortuous tunnel limits the movement paths of the solid material and the extraction liquid, the countercurrent contact frequency, the countercurrent contact path and the countercurrent contact time of the solute and the solvent are increased, and the mass transfer process of the extraction is enhanced. The stepped tunnel type countercurrent soaking forms the preferential extraction process aiming at the powdery or semi-fluid solid material.

Two feed inlets are arranged at the rear part of the top wall of the box body, a solid material feed inlet 1a is arranged close to the rear side and is positioned above the final-stage baffle plate, and the feed inlets can be used for feeding solid materials. Solid material feed inlet 1a is equipped with the fill of keeping in 1m, utilizes and keeps in 1m accumulational material of fill and realizes isolated with the atmosphere in the container, prevents that volatile solvent from escaping away in the container and leading to harm or loss.

The back upper place of final stage baffling board is equipped with feeding damper door 2, can adjust the interval of gate height control and final stage baffling board to control the feeding volume, prevent that the feeding from out of control and leading to the tunnel siltation to block up. Usually, a shallow material layer is adopted for soaking and extraction, and the height of the material layer is controlled to be 100-400mm according to the properties of the materials.

The other feed inlet is a semi-fluid material feed inlet 1b, is positioned at the front side of the solid material feed inlet 1a and aims at semi-fluid materials with strong fluidity, such as thick paste materials and semi-slurry materials. A feeding platform 1c is arranged below the semi-fluid material feeding port 1b, and the feeding platform 1c is positioned above the last-stage upper shaft and can bear materials with strong flowability.

Continuous extraction generally adopts six-stage extraction, solid raw materials fall into a sixth-stage soaking tank through a solid material feed inlet 1a, are pushed by a scraper to descend along a sixth-stage baffle plate and are contacted with concentrated mixed oil in the sixth-stage soaking tank, solid materials fall into an arc-shaped bottom 3b of the sixth-stage soaking tank from the bottom of the baffle plate, are fished and pushed by a chain scraper device, ascend along a sixth-stage inclined bottom plate and are separated from the liquid level, the solid materials are drained, after free mixed oil in the solid materials is discharged, the solid materials fall onto a fifth-stage baffle plate from the sixth-stage inclined bottom plate, are pushed by the scraper to descend along the fifth-stage baffle plate and are contacted with the concentrated mixed oil in the fifth-stage soaking tank, and the rest is done in a similar manner in sequence, and continuous extraction is carried out. The number of stages can be increased properly for the materials which are difficult to extract.

The inclined bottom plate 3c is higher and longer, approaches the upper shaft and is obviously higher than the liquid level, and the inclined plate section higher than the liquid level is used for draining wet meal, so that the concentration content in the wet meal is reduced, the concentration gradient of each stage of soaking tank is obvious, and each stage of extraction has higher extraction power.

The inclined bottom plate 3c of each stage of soaking tank is provided with an obvious draining section, so that concentrated extraction liquid in solid materials is fully drained before the solid materials enter the next stage of soaking, a concentration gradient is easily formed in each stage of soaking tank, and the extraction liquid is kept to have larger extraction power.

The upper end of the inclined bottom plate 3c can be higher than the horizontal plane of the axis of the upper shaft, so that the box body has a higher liquid level, a longer upward extraction stroke is provided along the inclined bottom plate 3c, the falling point is higher after the box body falls onto the previous stage baffle plate from the top of the inclined bottom plate 3c, and a longer downward extraction stroke is provided along the baffle plate 4.

The baffle plate extends from the front side of the upper shaft at the rear stage to the top of the lower shaft 7 at the rear stage, the upper end of the baffle plate 4 can be close to the horizontal plane where the axis of the upper shaft is located, and a small amount of materials passing over the upper shaft chain wheel can also be received by the baffle plate 4 and enter the descending tunnel for extraction.

The upper parts of all levels of inclined bottom plates 3c except the first level are respectively provided with a filtering grid plate 3d, and the filtering grid plate 3d is of a structure with a narrow upper part and a wide lower part, so that blockage is avoided. The lower edge height of the previous stage of filtering grid plate is higher than the lower edge height of the next stage of filtering grid plate in sequence, the position of the newly dissolved side filtering grid plate is highest, the positions of the filtering grid plates on the concentrated mixing side are gradually reduced, and the lower edges of the filtering grid plates 3d at all stages are higher than the top of the wallboard 3a of the previous stage of soaking tank.

Under the action of the interstage liquid level difference, the high-level extraction liquid on the low-concentration side penetrates through the filtering grid plate 3d and simultaneously penetrates through the solid materials on the filtering grid plate 3d, so that the solid materials are preliminarily washed, concentrated extraction liquid in the solid materials is replaced, the original concentration balance in the solid materials is broken, and the new mass transfer balance is established when the solid materials enter the next stage for soaking.

At the upper part of each stage of the filtering grid plate 3d, the solid materials can be quickly drained. The filter grids 3d may extend to the top of the inclined bottom plate 3c, and may be provided in sections or integrally in the width direction of the inclined bottom plate 3c.

The inclined bottom plate of the first-stage soaking tank is not provided with a filtering grid plate, but is higher so as to be fully drained before discharging.

A new dissolution spraying pipe 15 is arranged above the first-stage soaking tank, a nozzle of the new dissolution spraying pipe 15 can be aligned with the juncture where wet meal separated from the liquid surface of the first-stage soaking tank, and the wet meal separated from the first-stage soaking tank is washed again by using new dissolution and then enters a final draining section. The newly-dissolved spraying pipe 15 can also be arranged at the top of the box body and positioned above the conveying chain 13 at the no-load horizontal section, and the sprayed newly-dissolved solution can clean the conveying chain 13 and the scraper thereof and enter the next circulation.

Taking the sixth-stage extraction as an example, the fresh solvent is sprayed into the material ascending tunnel of the first-stage soaking tank, is fully mixed with the solid phase to be discharged for mass transfer, and then reversely flows downwards, enters the material descending tunnel of the first stage from the lower edge of the first-stage baffle plate and the bottom of the first-stage soaking tank, flows upwards along the material descending tunnel formed by the first-stage baffle plate and the second-stage inclined bottom plate, penetrates or permeates the solid material at the filtering grid plate section of the second-stage inclined bottom plate, enters the second-stage soaking tank, and so on, and finally flows into the sixth-stage soaking tank.

The inclined bottom plates of the soaking tanks are uniformly provided with filtering grid plates 3d, and the liquid level difference is utilized to realize self-flow. The fresh solvent and the solid phase are in counter-current contact, the liquid level of the new solution side is at a high level because new solution is continuously injected, and the obvious liquid level difference is formed in the equipment because the set liquid level of the concentrated mixing side is at a low level, so that the liquid continuously permeates and flows from the high level to the low level. The side wall of the first-stage soaking tank is provided with a tank body overflow port 1e for controlling the highest liquid level so as to ensure safety.

A concentrated digestion port 3e is arranged on the rear wall of the final stage soaking tank, a baffle plate 5 stretching into the liquid level is arranged on the front side of the concentrated digestion port 3e, the concentrated digestion port 3e is separated from descending materials, a concentrated mixing sedimentation area 6 is formed between the baffle plate 5 and the rear wall of the final stage soaking tank, and concentrated digestion is discharged after powder sedimentation.

Each stage of extraction process of the materials comprises the following steps: soaking, solid-liquid mixing, fishing out, draining and the like. The highest concentration of solute in the new solid material is contacted with the highest concentration of concentrated solution, so that the new solid material has higher extraction power; the lowest concentration of solute in the solid material to be discharged is contacted with the new solution with the lowest concentration, the extraction power is still high, and finally the solid material is fully mixed with the fresh solvent in the first-stage soaking tank, then is fished up by a scraper and drained, and is discharged from a discharge port 1d.

The top of the box body is also provided with a free gas interface 1f and an access door 1g. The lowest part of the arc-shaped bottom 3b of each soaking groove is respectively provided with a vent, and each vent is connected into a vent pipe 14, so that the air is convenient to overhaul or is emptied when a batch is replaced.

As shown in fig. 7, since there is a phase difference between the internal conveying sprocket and the external auxiliary driving sprocket 9 on the auxiliary driving shaft 8-2, when the conveying sprocket is properly tensioned, the phases of the auxiliary driving sprocket 9 and the mating sprocket must be randomly adjusted to meet the meshing requirement of the external auxiliary transmission chain. The auxiliary driving chain wheel 9 is internally provided with an expansion sleeve in a central hole, specifically, an inner conical surface expansion sleeve 9a is abutted to a step in the central hole, an outer conical surface expansion sleeve 9b is inserted in the inner conical surface expansion sleeve 9a and matched with the inner conical surface expansion sleeve 9a, the outer conical surface expansion sleeve 9b is sleeved on a corresponding auxiliary driving shaft 8-2, a plurality of expansion screws 9c are uniformly distributed on the outer end surface of the outer conical surface expansion sleeve 9b, and the inner end of each expansion screw 9c is screwed in a screw hole of the inner conical surface expansion sleeve 9a.

The expansion screw 9c is loosened, and the phase angle can be adjusted randomly according to the requirement; after the adjustment is in place, the expansion screws 9c can be screwed down, and the expansion sleeve is tightened. The structure can effectively transmit torque and is convenient to assemble and disassemble.

Even if the special working condition that the expansion sleeve of the external auxiliary driving chain wheel 9 slips occurs, the equipment can still continuously run. The load traction force is changed from an external transmission chain to an internal conveying chain 13. The short-term operation has no problem, the fault emergency stop is avoided, and the reliability and the safety of the equipment are improved. The abrasion of the built-in conveying chain 13 is aggravated after long-term operation, and the maintenance is easily carried out by utilizing the production clearance.

As shown in FIG. 8, the auxiliary drive shaft 8-2 is provided with a stall warning mechanism, which may have various forms, such as mounting a sensing piece 8-2a at the shaft end of the auxiliary drive shaft 8-2, uniformly providing a plurality of signal teeth on the circumference of the sensing piece 8-2a, and detecting the rotating speed of the sensing piece 8-2a by a proximity switch 8-2b or an encoder to provide the rotating speed to a control system. When the expansion sleeve just slips, the auxiliary driving shaft 8-2 can stall instantaneously, the stall alarm mechanism sends a signal, and the control system sends an alarm signal to inform an operator of the working condition, so that the maintenance is facilitated.

As shown in fig. 9 to 12, the lower shaft 7 includes an immersion section located in the immersion tank and shaft heads located at both ends, the both ends of the immersion section are respectively provided with a large-diameter section for finish machining, the circumference of the large-diameter section is respectively sleeved with a lower shaft conveying chain wheel 7a, an inner hole of the lower shaft conveying chain wheel 7a is fixed on the large-diameter section through a flat key, a set screw is screwed on a flange of the lower shaft conveying chain wheel 7a and abuts against the flat key, the two lower shaft conveying chain wheels 7a and the immersion section of the lower shaft 7 are both immersed in the solvent, and are located at positions close to walls at both sides in the immersion tank and used for driving a chain, and scrapers uniformly fixed on the chain are turned around the axis of the lower shaft 7 and drive materials at the bottom of the immersion tank to move upwards.

Two shaft heads respectively penetrate out of the side wall of the soaking groove, a left-handed bush 7b is sleeved on the left shaft head, and left-handed threads 7b1 are arranged on the periphery of the left-handed bush 7 b; a right-handed bushing 7c is sleeved on the right shaft head, a right-handed thread 7c1 is arranged on the periphery of the right-handed bushing 7c, and the left bushing and the right bushing are used in a matched mode; the inner end heads of the left-handed bush 7b and the right-handed bush 7c respectively abut against a shoulder at the root of the shaft head.

The inner holes of the left-handed bush 7b and the right-handed bush 7c are in interference fit with the corresponding shaft heads, and the outer walls of the left-handed bush 7b and the right-handed bush 7c are in clearance fit with the inner holes of the corresponding sliding bearings 7d respectively.

The rotating speed of the lower shaft 7 is extremely low, generally in the range of 0.1-0.5rpm, the left-hand bush 7b and the right-hand bush 7c can adopt martensitic stainless steel, the sliding bearing 7d can adopt nodular cast iron and other materials, and loose matching relation is adopted. Because the lower shaft 7 has light load and extremely low rotating speed, the sliding bearing 7d also meets the service life requirement under the condition of no lubrication;

when the lower shaft 7 rotates, the left-handed thread 7b1 discharges materials to the right side, namely, discharges materials into the soaking tank where the soaking section is located; the right-handed thread 7c1 discharges to the left and also to the immersion tank in which the immersion section is located. Left-handed screw 7b1 and right-handed screw 7c1 are trapezoidal thread, and the trapezoidal thread at both ends is continuously outside propelling movement to the powder of entering, prevents that the powder siltation from leading to frictional force increase or locking phenomenon at slide bearing 7d inner wall.

The outer walls of the two sliding bearings 7d are respectively embedded in the corresponding lower shaft bearing seats 7e, the peripheries of the roots of the sliding bearings 7d are respectively provided with sliding bearing outer flanges 7d1, the sliding bearing outer flanges 7d1 are respectively embedded in inner annular grooves of the corresponding lower shaft bearing seats 7e, and the axial positioning of the sliding bearings 7d and the lower shaft bearing seats 7e is realized.

Outer ports of the two lower shaft bearing blocks 7e are respectively covered with a blank cap 7g, inner end faces of the blank caps 7g are respectively provided with a blank cap inner convex ring 7g1, and the blank cap inner convex rings 7g1 are respectively embedded into the outer ports of the corresponding lower shaft bearing blocks 7e, so that the blank caps 7g and the lower shaft bearing blocks 7e can be automatically centered conveniently, and the sealing performance is improved; a gap is reserved between the inner convex ring 7g1 of the blank cap and the outer end face of the bush.

A plurality of screw holes for fixing are uniformly distributed on the outer port of the lower shaft bearing seat 7e, a plurality of blank cap fixing holes are uniformly formed in the outer circumference of the blank cap 7g, blank cap sealing gaskets 7g3 are respectively arranged between the outer port of the lower shaft bearing seat 7e and the outer circumference of the blank cap 7g, each blank cap screw 7g2 respectively penetrates through the blank cap fixing holes and the through holes in the blank cap sealing gaskets 7g3 to be screwed into the corresponding screw holes of the lower shaft bearing seat 7e, the blank cap 7g is fixed on the lower shaft bearing seat 7e, and the blank cap 7e and the lower shaft bearing seat are sealed mutually.

The roots of the two lower shaft bearing seats 7e are respectively inserted into the central holes of the corresponding lower shaft flange sealing discs 7f, so that the accurate central positioning of the two lower shaft bearing seats is realized. The peripheries of the lower shaft bearing seats 7e close to the roots are respectively provided with lower shaft bearing seat outer flanges 7e1, and lower shaft bearing seat sealing gaskets 7h are arranged between the opposite end faces of the lower shaft bearing seat outer flanges 7e1 and the lower shaft flange sealing discs 7f. The outer end face of the lower shaft flange sealing disc 7f and the position corresponding to the lower shaft bearing seat outer flange 7e1 are provided with a lower shaft flange sealing disc center outer sinking groove, and half of the thickness of the lower shaft bearing seat sealing gasket 7h is embedded in the lower shaft flange sealing disc center outer sinking groove so as to realize positioning quickly and accurately.

A plurality of lower shaft bearing seat fixing holes are uniformly distributed on the outer flange 7e1 of the lower shaft bearing seat, and lower shaft bearing seat screws 7e2 respectively penetrate through the lower shaft bearing seat fixing holes and through holes in the sealing gasket 7h of the lower shaft bearing seat and are screwed into corresponding screw holes of the lower shaft flange sealing disk 7f, so that the lower shaft bearing seat 7e is fixedly connected onto the lower shaft flange sealing disk 7f, and mutual sealing is realized.

The outer edges of the inner end faces of the two lower shaft flange sealing discs 7f are respectively provided with a lower shaft flange sealing disc inner ring groove, and a lower shaft flange sealing gasket 7j is embedded in the lower shaft flange sealing disc inner ring grooves, so that the lower shaft flange sealing gasket 7j is sleeved on the lower shaft flange sealing disc 7f in advance and automatically centered, and the lower shaft flange sealing gasket 7j is tightly pressed on the outer wall of the soaking groove to realize sealing.

A plurality of lower shaft flange seal disc fixing holes are uniformly distributed on the periphery of the two lower shaft flange seal discs 7f, and screws of the lower shaft flange seal discs penetrate through the lower shaft flange seal disc fixing holes and corresponding through holes in the lower shaft flange plate seal gaskets 7j respectively and are screwed into screw holes in the side wall of the soaking tank so as to seal and fix the lower shaft flange seal discs on the side wall of the soaking tank.

During installation, the lower shaft flange sealing discs 7f can be fixed well, and then the lower shaft 7 is installed. When the lower shaft 7 is installed, the left-handed bushing 7b and the right-handed bushing 7c can be firstly preheated and then sleeved on two shaft heads of the lower shaft 7, and the left-handed bushing and the right-handed bushing are automatically clasped to realize interference fit after being cooled; then, the lower shaft conveying chain wheels 7a are installed at two ends of an immersion section of the lower shaft 7, the lower shaft 7 is integrally hoisted and placed into an inner cavity of the immersion tank, and two ends of the lower shaft 7 extend out of a central hole of a flange sealing disc of the lower shaft.

When the shaft end is installed, firstly embedding the sliding bearing 7d in the lower shaft bearing seat 7e, embedding the lower shaft bearing seat sealing gasket 7h in the sunken groove outside the center of the lower shaft flange sealing disc, then sleeving the sliding bearing 7d on the corresponding bushing, inwards pushing until the inner end head of the lower shaft bearing seat 7e is inserted into the central hole of the lower shaft flange sealing disc, then screwing each lower shaft bearing seat screw 7e2, and fixing the lower shaft bearing seat 7e on the lower shaft flange sealing disc 7 f; finally, a blank cap sealing gasket 7g3 and a blank cap 7g are installed.

After long-time operation, the left-handed bush 7b, the right-handed bush 7c, the sliding bearing 7d or the lower shaft conveying chain wheel 7a can be replaced, the lower shaft 7 and other parts do not need to be replaced, spare parts are low in loss, and the disassembly sequence is opposite to the assembly sequence.

As shown in fig. 13 to 17, the feeding adjustment gate 2 includes a worm and gear driver 2b, a transmission shaft 2c, a transmission shaft bearing seat 2d, a transmission sleeve 2e, a driving swing plate 2f, an arc gate plate 2g, a driven swing plate 2j, a driven shaft 2k and a driven end bearing seat 2m, a worm in the worm and gear driver 2b drives a worm gear to rotate, a hand wheel 2a is installed at the driving end of the worm shaft, and the transmission shaft 2c is fixed at the center of the worm gear. The middle section of the transmission shaft 2c is hermetically supported at the center of the gate flange seal plate 2n through a transmission shaft bearing seat 2d.

Have linked firmly on worm gear driver 2 b's the casing and have stopped rocking arm 2b1, the outer wall welding of transmission shaft bearing frame 2d has transmission shaft bearing frame journal stirrup 2d1, the outer end of stopping rocking arm 2b1 is through stopping commentaries on classics bolt and transmission shaft bearing frame journal stirrup 2d1 fixed connection, the middle section periphery cover of stopping commentaries on classics bolt is equipped with the spacer bush, the spacer bush supports between the terminal surface in opposite directions of stopping rocking arm 2b1 and transmission shaft bearing frame journal stirrup 2d1, the back is screwed up to the nut of stopping commentaries on classics bolt, worm gear driver 2b realizes relatively fixed with transmission shaft bearing frame 2d and gate flange shrouding 2n.

Two ports of the transmission shaft bearing seat 2d are respectively fixed with a gland 2d2, the outer end of the gland 2d2 is provided with a gland flange edge, the gland flange edge is fixed on the port of the transmission shaft bearing seat 2d through a gland screw, and gland sealing gaskets are respectively arranged between the gland flange edge and the port of the transmission shaft bearing seat 2d to ensure the port sealing.

The centers of the two pressing covers 2d2 are respectively provided with a pressing cover center sleeve, the two pressing cover center sleeves are oppositely inserted into the inner cavities of the transmission shaft bearing seats 2d, the inner cavities of the pressing cover center sleeves are respectively provided with a bearing bush 2d3, the bearing bushes 2d3 are copper-based solid lubrication bearings and are respectively sleeved on the transmission shaft 2c, the maximum diameter section of the transmission shaft 2c is arranged between the two bearing bushes 2d3, and the maximum diameter section is positioned in the middle of the inner cavity of the transmission shaft bearing seat 2d. An inner step is arranged in the central hole of the gland, and the two bearing shoes 2d3 are respectively propped against the inner side of the step in the central hole of the gland.

The outer ports of the two pressing covers 2d2 are respectively embedded with a transmission shaft sealing ring 2d4, the transmission shaft sealing rings 2d4 are framework oil seals, at least two of the transmission shaft sealing rings are arranged at each end, the sealing reliability is guaranteed, and the framework oil seals in the transmission shaft sealing rings abut against the outer sides of the steps in the center holes of the pressing covers.

The middle part of transmission shaft bearing frame 2d welds in the centre bore of gate flange shrouding 2n, and gate flange shrouding 2n is circular, and periphery evenly distributed has a plurality of flange bolt holes, and each screw passes the flange bolt hole and fixes gate flange shrouding 2n on one side wallboard of leaching the ware. The interior terminal surface of gate flange shrouding 2n is equipped with shrouding location boss 2n1, and in the mounting hole of ware wallboard was leached in the embedding of shrouding location boss 2n1, be convenient for realize the quick centering of gate flange shrouding 2n and mounting hole, the flange limit of gate flange shrouding 2n and leach and be equipped with the sealed pad 2p of gate shrouding and realize sealing between the ware wallboard.

The inner end of the transmission shaft 2c is provided with a conical section and a threaded section, the conical section is sleeved with a transmission sleeve 2e, an inner conical hole of the transmission sleeve 2e is matched with the conical section of the transmission shaft 2c, the threaded section of the transmission shaft 2c is screwed with a locking nut 2c1, the outer side of the locking nut 2c1 is screwed with a nut, the locking nut 2c1 is tightly pressed on the end face of the transmission sleeve 2e through a gasket, and the transmission sleeve 2e is fixed on the transmission shaft 2c.

The periphery of driving sleeve 2e links firmly initiative pendulum board 2f, can be equipped with two that are parallel to each other, and the free end of two initiative pendulum boards 2f links firmly in the one end of arc flashboard 2g. The driving swing plate 2f is a fan-shaped arc plate, and the arc outer edge can be welded with the inner arc surface of the arc gate plate 2g.

The other end of arc flashboard 2g links firmly driven swing board 2j, and driven swing board 2j also is fan-shaped arc board, also can be equipped with two that are parallel to each other, and its arc outside border can weld with the interior cambered surface of arc flashboard 2g mutually similarly. The driven shafts 2k are inserted into central holes of the two driven swing plates 2j, the arc-shaped flashboards 2g are coaxial with the transmission shafts 2c and the driven shafts 2k, the driven shafts 2k are supported in driven end bearing seats 2m, and the driven end bearing seats 2m are fixed on the inner side of a wall plate on the other side of the leacher.

The inner arc surface of the arc-shaped flashboard 2g is welded with a rib plate 2h, and the rib plate 2h is positioned between the driving swing plate 2f and the driven swing plate 2j. Gusset 2h is trapezoidal cross-section, and the topside of evagination is outside, and upper and lower border all welds with the intrados face of arc flashboard 2g mutually, and the lower border evenly is equipped with a plurality of evacuation breachs 2h1, prevents the inside long-pending material of gusset 2h.

The radius of the sealing plate positioning boss 2n1 is larger than the turning radius of the arc-shaped gate plate 2g, so that the adjusting gate is convenient to install or detach from the installation hole on one side of the leacher.

Leaches ware in-process, when needing to adjust the feeding volume, need not carry out any dismantlement, can directly rotate hand wheel 2a and adjust, hand wheel 2a rotates a week, and the worm wheel drives transmission shaft 2c and rotates the phase angle of a tooth, and transmission shaft 2c passes through transmission cover 2e and initiative balance weight 2f drive arc flashboard 2g and rotates the same phase angle, and the lower limb of arc flashboard 2g cuts into more or withdraws from feed channel to adjust the feeding volume. The outer wall of the worm gear driver 2b is provided with a dial for indicating the opening degree of the arc-shaped flashboard 2g, so that the precise control is facilitated.

In the accommodation process, the driven shaft 2k related to sealing only needs to rotate, does not need axial displacement, and the turned angle of adjusting at every turn is very little, usually does not exceed 45, more need not to last rotatory week, and the skeleton oil blanket is difficult to wear and tear, and life is very long, and is sealed reliable, and the security is high.

While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. In addition to the embodiments described above, other embodiments of the invention are possible without departing from the spirit and scope of the invention. The invention also comprises various changes and modifications, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the invention. The scope of the invention is defined by the appended claims and equivalents thereof. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.

Claims

1. The utility model provides a step tunnel type leaches ware, includes sealed box, the rear end of box is the feed end, and the front end is equipped with the discharge gate, and its characterized in that, box inner chamber are equipped with multistage soaking unit from the past backward in proper order, and each grade of soaking unit is respectively including soaking groove, lower shaft and upper shaft, and each lower shaft is located the bottom in the same level soaking groove respectively, and each grade of upper shaft is located the top in preceding one-level soaking groove respectively, has around the conveying chain between lower shaft and the upper shaft.

2. The stepped tunnel extractor of claim 1, wherein: the first stage soaks the groove and is close to the discharge gate, soaks the groove at different levels and includes wall panel, arc bottom and the inclined bottom plate even as an organic whole in proper order respectively, and this level lower shaft submergence is in the arc bottom of this level soaks the groove, and the upper end of inclined bottom plate extends to the rear side of this level upper shaft, and the inclined bottom plate below in the groove is soaked to the back level is connected to the upper end of wall panel.

3. The stepped tunnel extractor of claim 2, wherein: the upper portions of all levels of inclined bottom plates except the first level are respectively provided with a filtering grid plate, and the height of the lower edge of the filtering grid plate is gradually reduced from front to back and is higher than the top of the wallboard.

4. The stepped tunnel extractor of claim 2, wherein: each stage of soaking unit is also provided with a baffle plate, each baffle plate is a solid plate parallel to each stage of inclined bottom plate, the upper end of each baffle plate is higher than the liquid level, and the lower end of each baffle plate extends into the lower part of the soaking tank.

5. The stepped tunnel extractor of claim 4, wherein: the baffle plate of the stage extends from the front side of the upper shaft of the next stage to the top of the lower shaft of the stage.

6. The stepped tunnel extractor of claim 4, wherein: the first-stage upper shaft is positioned above the discharge port, the conveying chain is S-shaped and sequentially and alternately bypasses the conveying chain wheels of the lower shafts and the upper shafts at all stages, the conveying chain wheel bypasses the first-stage upper shaft conveying chain wheel and then bypasses the last-stage lower shaft conveying chain wheel through the feeding side guide slide rail to form a closed loop, and the scraping plates are uniformly arranged along the perimeter of the conveying chain.

7. The stepped tunnel extractor of claim 6, wherein: the baffle plates at each level and the lower end surface of the next-level inclined bottom plate form a material descending tunnel, and the baffle plates at each level and the upper end surface of the previous-level inclined bottom plate form a material ascending tunnel; the scraper plate moves downwards along the baffle plate and moves upwards along the inclined bottom plate.

8. The stepped tunnel extractor of claim 4, wherein: the planes of the axis of the lower shaft of the current stage and the axis of the upper shaft of the current stage are intersected with the inclined bottom plate and the baffle plate of the current stage at acute angles; the upper end of the inclined bottom plate is higher than the horizontal plane where the axis of the upper shaft is located, and the upper end of the baffle plate is close to the horizontal plane where the axis of the upper shaft is located.

9. The stepped tunnel extractor of claim 1, wherein: a new solution spraying pipe is arranged at the upper part of the front side of the box body, and the new solution is sprayed on the middle section of the inclined bottom plate of the first-stage soaking tank; the liquid level of the previous stage soaking tank is higher than that of the next stage soaking tank, the rear wall of the last stage soaking tank is provided with a concentrated dissolution port, the front side of the concentrated dissolution port is provided with a baffle plate which is stretched into the liquid level, and a concentrated mixing settlement area is formed between the baffle plate and the rear wall of the last stage soaking tank.

10. The stepped tunnel extractor of claim 4, wherein: a solid material feeding hole is formed in the rear part of the top wall of the box body and is positioned above the final-stage baffle plate; the semi-fluid material feeding port is arranged in front of the solid material feeding port, a feeding platform is arranged below the semi-fluid material feeding port, and the feeding platform is located above the last-stage upper shaft.

11. The stepped tunnel extractor of claim 10, wherein: the first-stage upper shaft is higher than the upper shafts at all stages, and a discharge side guide slide rail supported below the conveying chain is arranged below the rear side of the first-stage upper shaft; the feeding side guide slide rail is positioned on the front side of the solid material feeding hole and above the rear side of the last-stage upper shaft.

12. The stepped tunnel extractor of claim 1, wherein: a certain upper shaft is used as a main driving shaft which is driven by a speed reducer; the other part or all of the upper shafts are used as auxiliary driving shafts which are synchronously driven by the main driving shaft; the auxiliary driving chain wheel is arranged at the shaft end of the auxiliary driving shaft through an expansion sleeve.

13. The stepped tunnel extractor of claim 4, wherein: the back upper place of last stage baffling board is equipped with feeding adjustment gate, feeding adjustment gate includes worm gear driver, the hand wheel is installed to worm gear driver's worm axle drive end, worm gear driver's worm wheel center is fixed with the transmission shaft, the sealed center that supports at gate flange shrouding is passed through to the middle section of transmission shaft bearing frame, the inner end of transmission shaft is fixed with the transmission cover, the periphery of transmission cover has linked firmly initiative balance block, the free end of initiative balance block links firmly the one end at the arc-shaped gate board, the other end of arc-shaped gate board has linked firmly driven balance block, the stiff end of driven balance block has linked firmly the driven shaft, driven shaft support in driven end bearing frame and with the transmission shaft coaxial line.

14. The stepped tunnel extractor of claim 13, wherein: the worm gear driver's casing is last to have linked firmly only rocking arm, only the rocking arm pass through the bolt with the transmission shaft bearing frame journal stirrup fixed connection of transmission shaft bearing frame outer wall, the middle part welding of transmission shaft bearing frame is in the centre bore of gate flange shrouding, the interior terminal surface of gate flange shrouding is equipped with shrouding location boss, the radius of shrouding location boss is greater than the radius of gyration of arc flashboard.