Single drive tri-axial annular leach

Abstract

The utility model discloses a single drive three -shaft formula annular extractor belongs to vegetable oil extraction equipment technical field. Including the extractor shell and the annular chain in the extractor shell, the even installation of a plurality of scrapers has on annular chain, the right lower corner of shell is equipped with head drive shaft, and it is installed with head axle sprocket on it, the left lower corner of shell is equipped with tail driven shaft, and it is installed with tail axle sprocket on it, and the right upper corner of shell is equipped with head tension axle, and it is installed with head tension pulley on it, and the end of upper layer grill is connected with the wave -shaped guide rail, and the end of wave -shaped guide rail and the upper end smooth transition connection of tail arc -shaped guide rail, and tail driven shaft is located in the lower end of tail arc -shaped guide rail, annular chain is in turn wrapped in head axle sprocket, head tension pulley, upper layer grill, wave -shaped guide rail, tail arc -shaped guide rail and tail axle sprocket. The material after upper layer extraction in this extractor can be in tail fast and fall into lower layer extraction liquid, and eliminate the " bridge " or the plugging phenomenon of tail, and reduce the operation load of annular chain.

Description

Technical Field

[0001] This utility model relates to an extraction device, and more particularly to a single-drive three-axis annular extractor, belonging to the technical field of vegetable oil extraction equipment. Background Technology

[0002] Oil extractors are core equipment in the oil processing industry used to extract oils from oilseeds. They mainly include several structural forms such as annular extractors, rotary extractors, box chain extractors, and drag chain extractors. Their main principle is to use a spray device to evenly distribute organic solvents (such as n-hexane) onto a stable bed of oilseeds. Mass transfer is completed through soaking, permeation, and draining. The solvent can fully contact the oilseed cells through the gaps in the oil layer. Utilizing the miscibility of oil and organic solvent, the solvent permeates into the solid oilseeds, dissolving the oils to form a concentrated oil mixture. Due to the concentration difference, the concentrated oil mixture inside the solid oilseeds diffuses into the dilute oil mixture on the outside, efficiently extracting the oils from the raw material.

[0003] Traditional single-shaft annular leaching machines are widely used in the market. These machines typically feature an annular chain, driven by a single drive shaft at the lower head, with an arc-shaped track at the upper head for steering. The curved tail section uses a semi-circular track for the upper chain to slide and turn to the lower level. Below the upper chain is an upper grid plate, and below the lower scraper is a lower grid plate. Below the upper grid plate is an upper oil hopper, and below the lower grid plate is a lower oil hopper. Material layers are located above both the upper and lower grid plates. Heavy-duty scrapers are evenly installed along the circumference of the chain. Spraying devices are located above the upper and lower material layers to immerse and extract the material. The extracted oil falls into the lower oil hopper. Ultra-large annular leaching machines with a production capacity of 10,000 tons / day have chain lengths exceeding 130 meters and weigh hundreds of tons. Each malfunction causing production line interruption would result in significant losses; therefore, the reliability requirements for the equipment are extremely high. In actual production, the following defects exist: 1. The structural dimensions of the head and tail arc sections are too large, especially for equipment with large output, making road transportation difficult. The head and tail lack effective support, resulting in poor stability and difficulty in installation and connection; 2. The ring chain is subjected to tension and bending moment, resulting in large stress and frequent chain breakage.

[0004] Chinese invention patent CN 105820874B discloses a "modular annular leaching device". The leaching device shell is composed of a head box, a feeding section, an upper leaching section, a lower leaching section, a draining section, and a tail box. The upper layer of the annular chain is located in the feeding section and the upper leaching section, and the lower layer of the annular chain is located in the lower leaching section and the draining section. Multiple scrapers are evenly installed along the circumference of the annular chain. The right port of the feeding section and the right port of the draining section are connected to the upper and lower ends of the head box through flanges, respectively. The left port of the upper leaching section and the left port of the lower leaching section are connected to the upper and lower ends of the tail box through flanges, respectively. The left port of the feeding section is connected to the right port of the upper leaching section through a flange, and the right port of the lower leaching section is connected to the left port of the draining section through a flange. A storage box is connected to the upper right end of the feeding section. The top of the storage box has a feeding port, and the bottom of the head box has a discharging port. The overall structure is a four-axis dual-drive leaching device. The drawback is that the material falling section that connects to the end of the upper grid plate is difficult to fall quickly because the material is prone to "bridging". Excessive material retention at the tail end will affect the meshing of the chain and sprocket, resulting in a larger load on the drive system.

[0005] In summary, existing leaching machines are prone to material blockage at the tail end due to material not following the preset path. This can lead to machine downtime for maintenance or even equipment damage. There is an urgent need to develop a new type of annular leaching machine to meet the needs of large-scale, high-yield, and stable production. Utility Model Content

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0007] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0008] The purpose of this invention is to overcome the problems existing in the prior art and provide a single-drive three-axis annular leaching device, in which the material extracted from the upper layer can quickly fall into the lower layer of extract at the tail, eliminating the "bridging" or blockage at the tail and reducing the operating load of the annular chain.

[0009] To solve the above technical problems, this utility model provides a single-drive three-axis annular leaching device, comprising a leaching device housing and an annular chain located within the leaching device housing. Multiple scrapers are evenly mounted on the annular chain. A head drive shaft is located at the lower right corner of the leaching device housing, and a head shaft sprocket is mounted on the head drive shaft. A tail driven shaft is located at the lower left corner of the leaching device housing, and a tail shaft sprocket is mounted on the tail driven shaft. A head tensioning shaft is located at the upper right corner of the leaching device housing, and a head tensioning wheel is mounted on the head tensioning shaft. A corrugated guide rail is connected to the end of the upper grid plate, and the end of the corrugated guide rail smoothly transitions to the upper end of the tail arc-shaped guide rail. The tail driven shaft is located at the lower end of the tail arc-shaped guide rail. The annular chain is sequentially wrapped around the head shaft sprocket, the head tensioning wheel, the upper grid plate, the corrugated guide rail, the tail arc-shaped guide rail, and the tail shaft sprocket.

[0010] Furthermore, the head tensioning shaft is located inside the head drive shaft, causing the annular chain to form a trapezoidal shape that is narrower at the top and wider at the bottom.

[0011] Furthermore, both the wavy guide rail and the tail arc-shaped guide rail are channel steel with openings facing each other. The root ends of each scraper are fixed to the chain pin shaft by a pair of lugs. The middle section of the chain pin shaft is connected to the link of the ring chain. Rollers are fixed to both ends of the chain pin shaft, and the corresponding rollers are embedded in the channel steel of the corresponding guide rail.

[0012] Furthermore, each scraper has two symmetrical support fins on its back along the width direction. The lower protruding parts of the two support fins are located between the two outer chain plates of a certain link of the annular chain and are fixedly connected by fasteners.

[0013] Furthermore, the inner sides of the two tail arc-shaped guide rails are connected to each other by guide rail supports, and each guide rail support is parallel to each other and extends along the width direction of the leaching tank shell.

[0014] Compared with the prior art, the advantages or beneficial effects of this utility model include at least the following: 1. The tail section uses an arc-shaped guide rail to support the chain, which makes the overall load distribution more reasonable, reduces the load on the other three axes, and reduces the bending moment borne by the chain, greatly reducing the wear of the chain and sprocket. 2. Adding rollers to the scraper reduces friction, changing sliding friction to rolling friction, which reduces wear on the chain scraper and grid plate, and can also reduce the load on the equipment to a certain extent, thereby reducing production energy consumption. 3. The upper end uses a wave-shaped guide rail to forcibly disrupt the stable material bed structure in the material dropping area, avoiding "bridging", ensuring smooth material dropping, improving equipment operating efficiency, and reducing the number of times the equipment needs to be stopped for maintenance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein: Figure 1 This is a front view of the single-drive three-axis annular leaching device of this utility model; Figure 2 for Figure 1 Enlarged view of the tail; Figure 3 This is a three-dimensional enlarged view of the annular chain and scraper in the horizontal section of this utility model; Figure 4 This is a three-dimensional enlarged view of the annular chain and scraper at the tail end in this utility model; Figure 5 This is a three-dimensional enlarged view of the scraper in this utility model; Figure 6 This is a three-dimensional enlarged view of one side of the wave-shaped guide rail and the tail arc-shaped guide rail in this utility model; Reference numerals: 1. Storage tank; 2. Leachator shell; 2a. Head shell; 2b. Tail shell; 2c. Discharge port; 3. Head drive shaft; 3a. Head shaft sprocket; 4. Head tension shaft; 4a. Head tension wheel; 5. Upper leaching section; 5a. Upper grid plate; 5b. Upper oil hopper; 6. Wavy guide rail; 7. Tail arc-shaped guide rail; 8. Guide rail support; 9. Tail driven shaft; 9a. Tail shaft sprocket; 10. Lower leaching section; 10a. Lower oil hopper; 11. Ring chain; 11a. Outer chain plate; 11b. Inner chain plate; 11c. Chain pin; 11d. Roller; 12. Scraper; 12a. Support fin. Detailed Implementation

[0016] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0017] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0018] Unless otherwise defined, 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 pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0019] like Figures 1 to 6 As shown, the single-drive three-axis annular leaching device of this utility model includes a leaching device shell 2, with a head shell 2a and a tail shell 2b at its two ends. An upper leaching section 5 and a lower leaching section 10 are provided between the head shell 2a and the tail shell 2b. An annular chain 11 is provided in the leaching device shell 2, and multiple scrapers 12 are evenly installed on the annular chain 11. A shell material inlet is provided near the top of the head shell 2a in the upper leaching section 5, and a storage tank 1 is provided at the shell material inlet. A feed inlet is provided at the top of the storage tank 1. An upper grid plate 5a extends horizontally from the head to the tail in the upper leaching section 5, serving as a material bed to support the upper material. Multiple upper oil hoppers 5b are provided below the upper grid plate 5a. The material in the tail shell 2b is flipped from the upper layer to the lower layer. The lower leaching section 10 is provided with a lower grid plate that extends horizontally from the tail to the head. The lower grid plate serves as a material bed to carry the lower material. Multiple lower oil hoppers 10a are provided below the lower grid plate. The bottom of the head shell 2a is provided with a discharge port 2c.

[0020] The lower right corner of the leaching tank 2 is provided with a head drive shaft 3, on which a head shaft sprocket 3a is mounted; the lower left corner of the leaching tank 2 is provided with a tail driven shaft 9, on which a tail shaft sprocket 9a is mounted; the upper right corner of the leaching tank 2 is provided with a head tension shaft 4, on which a head tension wheel 4a is mounted; the end of the upper grid plate 5a is connected to a wave-shaped guide rail 6, the end of which smoothly transitions to the upper end of the tail arc-shaped guide rail 7; the tail driven shaft 9 is located at the lower end of the tail arc-shaped guide rail 7; the annular chain 11 is sequentially wrapped around the head shaft sprocket 3a, the head tension wheel 4a, the upper grid plate 5a, the wave-shaped guide rail 6, the tail arc-shaped guide rail 7, and the tail shaft sprocket 9a.

[0021] The head tensioning shaft 4 is located inside the head drive shaft 3, so that the ring chain 11 is in a trapezoidal shape that is narrower at the top and wider at the bottom.

[0022] Both the wavy guide rail 6 and the tail arc guide rail 7 are channel steel with openings facing each other. The root ends of each scraper 12 are fixed to the chain pin 11c by a pair of lugs. The middle section of the chain pin 11c is connected to the link of the ring chain 11, that is, the middle section of the chain pin 11c passes through the outer chain plate 11a and the inner chain plate 11b of the ring chain 11. Rollers 11d are fixed at both ends of the chain pin 11c, and the corresponding rollers 11d are embedded in the channel steel of the corresponding guide rail.

[0023] Each scraper 12 has two support fins 12a symmetrically arranged on its back along the width direction. The lower protruding part of the two support fins 12a is located between the two outer chain plates 11a of a certain link of the ring chain 11 and is fixedly connected by fasteners.

[0024] The inner sides of the two tail arc-shaped guide rails 7 are connected to each other by guide rail supports 8. Each guide rail support 8 is parallel to each other and extends along the width direction of the leaching tank shell 2.

[0025] The material is fed into the storage tank 1 by the lifting scraper and then into the extractor. The storage tank 1 is an inverted cone shape, smaller at the top and larger at the bottom, which effectively prevents the material from caking. When a material column of a certain height is formed, the head drive shaft 3 drives the ring chain 11 and scraper 12 forward through the head shaft sprocket 3a, thereby pushing the material into the upper leaching section 5, spreading it flat on the upper grid plate 5a and moving towards the tail. The organic solvent is sprayed downward from the upper part of the upper leaching section 5, passing through the material bed and the sieve holes of the upper grid plate 5a, falling into the upper oil hopper 5b for collection, and is pumped to the upper circulating spray extraction. The upper material falls into the lower layer in the tail shell 2b.

[0026] When the material reaches the upper tail section, the surfaces of the oilseed flakes and wet meal are relatively rough, resulting in greater bonding forces between them. This creates a very stable bed structure, which is prone to "bridging." Since adjacent scrapers 12 are always parallel to each other, the "bridging" is relatively stable, making it difficult for the upper material to fall smoothly to the tail section. This extractor is equipped with a corrugated guide rail 6 at the upper tail section. Rollers 11d mounted on scrapers 12 enter the corrugated guide rail 6. The U-shaped groove of the corrugated guide rail 6 restricts the movement of rollers 11d, causing the annular chain 11 and scrapers 12 to undulate in a corrugated manner. This causes adjacent scrapers 12 to undergo continuous disturbance, opening and closing, from a parallel state. At this time, the scrapers 12 apply external force to the material layer, disrupting the originally stable bed structure and ensuring that the material can fall smoothly to the tail section. The inlet end of the corrugated guide rail 6 is designed with a beveled cut and rounded chamfers, allowing rollers 11d to smoothly enter the U-shaped groove when they contact the corrugated guide rail 6. Furthermore, the wave-shaped guide rail 6 is mounted on the crossbeam of the guide rail support 8 using fasteners, and can be easily replaced after wear and failure.

[0027] The material falling to the lower layer forms a material bed on the lower grid plate of the lower leaching section 10. The free ends of each scraper 12 face downwards and push the material towards the head end along the lower grid plate. During the process of moving towards the head end, the organic solvent is sprayed downwards from the upper part of the lower leaching section 10, passes through the material bed and the sieve holes of the lower grid plate, falls into the lower oil hopper 10a for collection, and is pumped to the upper circulating spray extraction. A non-spray section is set near the head end of the lower leaching section 10 to facilitate material drainage. After the wet meal is drained, it is discharged from the discharge port 2c.

[0028] This leaching unit eliminates the upper tail drive shaft and replaces it with a tail arc-shaped guide rail 7. The tail arc-shaped guide rail 7 also uses channel steel with openings facing each other, so that the roller 11d fits well with the guide rail slide. This ensures that the material moves along the set path while also providing a certain tension support. The arc structure allows the load applied by the ring chain 11 to be evenly distributed on it, changing the single-point force on the shaft and sprocket in the previous case to multi-point force on the support surface of the tail arc-shaped guide rail 7, reducing the load on the other three shafts and making the force on the entire leaching structure more reasonable.

[0029] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A single-drive triaxial annular leaching device, comprising a leaching device housing (2) and an annular chain (11) located within the leaching device housing (2), wherein a plurality of scrapers (12) are uniformly mounted on the annular chain (11), characterized in that: A head drive shaft (3) is provided at the lower right corner of the leaching tank housing (2), and a head shaft sprocket (3a) is mounted on the head drive shaft (3); a tail driven shaft (9) is provided at the lower left corner of the leaching tank housing (2), and a tail shaft sprocket (9a) is mounted on the tail driven shaft (9); a head tensioning shaft (4) is provided at the upper right corner of the leaching tank housing (2), and a head tensioning wheel (4a) is mounted on the head tensioning shaft (4); the upper grid plate (5a) The end is connected to a wave-shaped guide rail (6), and the end of the wave-shaped guide rail (6) is smoothly connected to the upper end of the tail arc-shaped guide rail (7). The tail driven shaft (9) is located at the lower end of the tail arc-shaped guide rail (7). The annular chain (11) is wrapped around the head shaft sprocket (3a), the head tension wheel (4a), the upper grid plate (5a), the wave-shaped guide rail (6), the tail arc-shaped guide rail (7) and the tail shaft sprocket (9a) in sequence.

2. The single-drive triaxial annular leaching device according to claim 1, characterized in that: The head tensioning shaft (4) is located inside the head drive shaft (3), so that the ring chain (11) is in the shape of a trapezoid with a narrow top and a wide bottom at the head.

3. The single-drive triaxial annular leaching device according to claim 1, characterized in that: The wave-shaped guide rail (6) and the tail arc-shaped guide rail (7) are both channel steel with openings facing each other. The root ends of each scraper (12) are fixed to the chain pin (11c) by a pair of lugs. The middle section of the chain pin (11c) is connected to the link of the ring chain (11). Rollers (11d) are fixed at both ends of the chain pin (11c), and the corresponding rollers (11d) are embedded in the channel steel of the corresponding guide rail.

4. The single-drive triaxial annular leaching device according to claim 1, characterized in that: Each scraper (12) has two support fins (12a) symmetrically arranged on the back side along the width direction. The lower protruding part of the two support fins (12a) is located between the two outer chain plates (11a) of a certain link of the ring chain (11) and is fixedly connected by fasteners.

5. The single-drive triaxial annular leaching tank according to any one of claims 1 to 4, characterized in that: The inner sides of the two tail arc-shaped guide rails (7) are connected to each other by guide rail supports (8), and each guide rail support (8) is parallel to each other and extends along the width direction of the leaching tank shell (2).

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