Leaching module and leacher

Abstract

The utility model belongs to the technical field of leachers. The leaching module comprises an oil hopper used for placing mixed oil; the sieve plate is arranged above the oil hopper; the sieve plate is used for placing oil and filtering mixed oil; the spraying mechanism is arranged above the sieve plate and comprises a first spraying mechanism and a second spraying mechanism, the first spraying mechanism is arranged on the feeding side of the leaching module, and the first spraying mechanism comprises a plurality of first spraying assemblies which are sequentially arranged in the material conveying direction; the first spraying mechanism is connected with the oil hopper through a first main pipe; the second spraying mechanism is arranged on the discharging side of the leaching module, and the second spraying mechanism comprises a plurality of second spraying assemblies arranged in the material conveying direction; and the second spraying mechanism is connected with the oil hopper of the adjacent leaching module through a second main pipe. The leaching device is used for solving the technical problem that the leaching effect is not ideal due to the fact that an existing leaching device is low in spraying spreading rate and small in solvent covering range. The leacher comprises the leaching module.

Description

Technical Field

[0001] This utility model belongs to the field of leaching technology, specifically relating to a leaching module and a leaching device including the above-mentioned leaching module. Background Technology

[0002] The leaching unit is the core equipment in the leaching workshop, representing the first step in the production process. Its operational efficiency and production indicators directly impact the results of subsequent equipment and processes. Due to the varying characteristics of oilseeds, the effectiveness of oil extraction depends on the leaching unit's structure. Most leaching units on the market currently separate the oilseeds after they have accumulated to a certain height on a screen and undergone spraying, soaking, and draining. As mentioned above, spraying and draining is a crucial step in the leaching process. The spraying effect, the adequacy of soaking, the spray coverage, and the stability of mechanical movement are all comprehensive considerations for ensuring optimal leaching results.

[0003] Currently, the main types of leaching machines on the market are rectangular box-type cable chain leaching machines and cylindrical flat-rotor leaching machines. Regardless of the type of leaching machine, as the oilseeds move forward in the leaching machine, solvent spraying and soaking are required to extract the oil from the oil. The residual oil content is a key indicator that companies control. Existing spraying systems typically have one or two spray pipes above each oil hopper, which presents the following technical problems:

[0004] First, during the spraying process, the coverage area of ​​the wet meal is small, the distribution area is not large, and the solvent distribution rate sprayed by the spraying device is low, which affects the leaching effect.

[0005] Secondly, the leaching modules cannot be arranged uniformly, which is not conducive to the simplicity of manufacturing and the standardization of the process. Utility Model Content

[0006] The first objective of this invention is to provide a leaching module to solve the technical problem that existing leaching spray devices have low spray coverage and small solvent coverage, resulting in unsatisfactory leaching effects.

[0007] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an leaching module, characterized in that it includes:

[0008] An oil hopper is used to hold mixed oils;

[0009] A sieve plate is disposed above the oil hopper; the sieve plate is used to hold oil and filter mixed oil.

[0010] A spraying mechanism, disposed above the sieve plate, includes:

[0011] A first spraying mechanism is disposed on the feed side of the leaching module. The first spraying mechanism includes a plurality of first spraying components arranged sequentially along the material conveying direction. The first spraying mechanism is connected to the oil hopper via a first main pipe. A first circulating pump is disposed on the first main pipe.

[0012] The second spraying mechanism is located on the discharge side of the leaching module. The second spraying mechanism includes a plurality of second spraying components arranged along the material conveying direction. The second spraying mechanism is connected to the oil hopper of the adjacent leaching module via a second main pipe. A second circulating pump is installed on the second main pipe.

[0013] This invention utilizes a first spraying mechanism and a second spraying mechanism to achieve spraying, increasing the solvent coverage per unit area to improve the contact between the solvent and the oil, thereby reducing residual oil and achieving better leaching efficiency.

[0014] The leaching module of this utility model is uniformly manufactured and installed, which facilitates the simplicity of manufacturing and the standardization of the process.

[0015] To solve the technical problem of how to implement the first or second spray assembly, the present invention adopts the following technical solution: the first spray assembly includes a first spray pipe and a first overflow trough; the first spray pipe is connected to the first main pipe via a first connecting flange and a first branch pipe; the first overflow trough is disposed below the first spray pipe;

[0016] The second spray assembly includes a second spray pipe and a second overflow trough; the second spray pipe is connected to the second main pipe via a second connecting flange and a second branch pipe; the second overflow trough is located below the second spray pipe.

[0017] Due to the uneven moisture content of the wet meal and the different solvent penetration rates, the spray volume needs to be adjusted during the leaching process. However, adjusting the spray volume based on this already present condition would result in insufficient solvent coverage, affecting the leaching effect. Furthermore, the existing spray system layout suffers from an imbalance between the solvent spray volumes in the front and rear oil hoppers, failing to adequately guarantee the concentration gradient of the mixed oil and the balance of the spray circulation at each stage. In short, the traditional spray pipe arrangement limits the range of spray volume adjustment, making it difficult to achieve a balanced spray volume. To solve these technical problems, this invention adopts the following technical solution: a first valve is installed on the first branch pipe; a second valve is installed on the second branch pipe.

[0018] This invention adjusts the spray volume by adjusting the speed of the first or second circulating pump, controlling the opening and closing of the first valve on each first branch pipe, and controlling the opening and closing of the second valve on each second branch pipe. At the same time, by utilizing the spray pipe arrangement of the leaching module of this invention, the spray volume adjustment range is ensured, and the amount of solvent in the oil hopper is kept at a certain level, neither overflowing nor too little, so that the spray volume adjustment can achieve balance.

[0019] To further solve the technical problem of low solvent coverage, the present invention adopts the following technical solution: the second spray assembly is arranged in parallel with the first spray assembly.

[0020] The horizontal centerline of the first spray pipe or the second spray pipe is at a height of H from the oil on the screen plate, and the vertical centerline of the first spray pipe is N1, where N1 = (1.10 - 1.43) * H.

[0021] The distance between the vertical center lines of the second spray pipe is N2, N2 = (1.10 - 1.43) * H.

[0022] To solve the technical problem of how to install the first or second spray pipe, the present invention adopts the following technical solution: the first spray pipe or the second spray pipe is respectively installed on the walls on both sides of the leaching device.

[0023] To further address the technical problem of low solvent coverage, this invention adopts the following technical solution: the coverage distance of the mixed oil covering the oil in the first spray assembly or the second spray assembly is M, where M = (0.72-0.98) * H.

[0024] To further solve the technical problem of low solvent coverage, the present invention adopts the following technical solution: the coverage distance of the mixed oil of the first spraying mechanism and the second spraying mechanism is L, and L is greater than three-fifths of the total length of the oil in the leaching module.

[0025] To further address the technical problem of low solvent coverage, this invention adopts the following technical solution: the number of the first spray assembly is 1-3; the number of the second spray assembly is 1-3. By increasing the number of the first or second spray assembly, the solvent coverage per unit area is further increased, thereby improving the contact between the solvent and the oil, further reducing residual oil, and achieving better leaching efficiency.

[0026] The second objective of this invention is to provide an extractor comprising the extractor module described in any of the preceding claims.

[0027] To further address the technical issue of how to arrange the leaching modules in the leaching tank, this utility model adopts the following technical solution: the leaching modules are arranged sequentially along the material conveying direction. Attached Figure Description

[0028] Figure 1 This is a front view of a first embodiment of the leaching module of this utility model;

[0029] Figure 2 This is a schematic diagram of the first or second spray assembly of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the first spraying mechanism of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the second spraying mechanism of this utility model;

[0032] Figure 5 This is a cross-sectional view of the leaching module of this utility model;

[0033] Figure 6 This is a front view of Embodiment 2 of the leaching module of this utility model;

[0034] Figure 7 This is the oil circuit diagram of the leaching module of this utility model;

[0035] In the picture:

[0036] 10 leaching modules;

[0037] 100 Oil hopper; 100' Adjacent leaching module oil hopper; 200 Screen plate; 300 First spray mechanism; 310 First spray assembly; 311 First spray pipe; 312 First overflow trough; 313 First connecting flange; 314 First branch pipe; 315 First main pipe; 316 First circulating pump; 317 First valve; 400 Second spray mechanism; 410 Second spray assembly; 411 Second spray pipe; 412 Second overflow trough; 413 Second connecting flange; 414 Second branch pipe; 415 Second main pipe; 416 Second circulating pump; 417 Second valve; 501 Mixed oil one; 502 Mixed oil two; 600 Oil. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] like Figure 1 As shown, the leaching module 10 includes an oil hopper 100, a sieve plate 200, a first spraying mechanism 300, and a second spraying mechanism 400.

[0040] Mixed oil 2 (502) is placed in oil hopper 100. The arrow on oil hopper 100 indicates the overflow direction: if the oil hopper on the right overflows, it can only leak into the oil hopper on the left.

[0041] The sieve plate 200 is located above the oil hopper 100; the sieve plate 200 is used to hold the oil 600 and filter the mixed oil.

[0042] like Figure 1 , Figure 2 , Figure 3As shown, the first spraying mechanism 300 is located above the oil on the screen plate 200. The first spraying mechanism 300 includes a plurality of first spraying components 310 arranged sequentially along the material conveying direction. Preferably, the first spraying mechanism 300 consists of 1 to 3 first spraying components 310. Figure 1 As shown, in one implementation, the number of first spray components is two. Figure 6 As shown, in one embodiment, the number of first spray assemblies is three. The first spray mechanism 300 is connected to the oil hopper 100 via a first main pipe 315. A first circulation pump 316 is mounted on the first main pipe 315.

[0043] like Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, the second spraying mechanism 400 is located upstream or downstream of the first spraying mechanism 300, and above the oil on the screen plate 200. The second spraying mechanism 400 includes a plurality of second spraying components 410 arranged along the material conveying direction. Preferably, the second spraying mechanism 400 consists of 1 to 3 second spraying components 410. Figure 1 As shown, in one implementation, the number of second spray components is two. Figure 6 As shown, in one embodiment, the number of second spray assemblies is three. The second spray assembly 410 is arranged parallel to the first spray assembly 310, and the installation height between the second spray assembly 410 and the first spray assembly 310 is the same. The second spray mechanism 400 is connected to the adjacent leaching module oil hopper 100' via a second main pipe 415. A second circulation pump 416 is mounted on the second main pipe 415.

[0044] Each leaching module consists of two spraying mechanisms: a first spraying mechanism and a second spraying mechanism. The first spraying mechanism is a self-circulating spray, and the second spraying mechanism is a pre-spray. After the mixed oil 501 sprayed by the two spraying mechanisms comes into contact with the wet meal and is leached, mixed oil 502 falls into the oil hopper below the leaching module. The concentration of mixed oil 502 is different from that of mixed oil 501. The total spray coverage distance of a leaching module consisting of the two spraying mechanisms is 2L. Therefore, the coverage distance of a single leaching module of 2L can account for more than 3 / 5 of the total length of the wet meal.

[0045] When the length of the mixing oil hopper is increased on both sides, the leaching length at the top is also increased accordingly, and the first (second) spray assembly of the first (second) spray mechanism can also be increased accordingly.

[0046] In one embodiment, such as Figure 2As shown, the first spray assembly 310 includes a first spray pipe 311 and a first overflow trough 312. The first spray pipe 311 is correspondingly disposed on the walls on both sides of the leaching tank. A first connecting flange 313 is provided on the first spray pipe 311, and the first spray pipe 311 is connected to the first main pipe 315 via the first connecting flange 313 and a first branch pipe 314. The first overflow trough 312 is located below the first spray pipe 311.

[0047] like Figure 2 As shown, the second spray assembly 410 includes a second spray pipe 411 and a second overflow trough 412. The second spray pipe 411 is correspondingly installed on the walls on both sides of the leaching tank. A second connecting flange 413 is provided on the second spray pipe 411, and the second spray pipe 411 is connected to the second main pipe 415 via the second connecting flange 413 and a second branch pipe 414. The second overflow trough 412 is located below the second spray pipe 411.

[0048] In one embodiment, a first valve 317 is installed on each first branch pipe 314; and a second valve 417 is installed on each second branch pipe 414.

[0049] The balance of the spray volume above the oil hopper of each leaching module allows the wet meal to be sprayed and leached by the corresponding mixed oil 501 containing different amounts of solvent. In this way, a concentration difference appears in the mixed oil in the oil hopper of this leaching module and in the oil hopper of another connected leaching module, thus ensuring a significant mixed oil concentration gradient. Only by forming a mixed oil concentration gradient can the inlet and outlet efficiency be improved.

[0050] Traditional spray pipe arrangements limit the range of spray volume adjustment, making it difficult to achieve a balanced spray volume. This invention adjusts the spray volume by changing the circulation pump speed and the spray pipe switch, maintaining a constant solvent level in the oil tank—neither overflowing nor becoming too low—thus achieving a balanced spray volume. Because the spray volume is balanced, overflow is less likely to occur, resulting in a stable concentration difference between the oil tanks.

[0051] Each leaching module contains a first spraying mechanism and a second spraying mechanism, and each first or second spraying mechanism has 1 to 3 spraying components. The spraying volume of the spraying components is adjustable, so the spraying volume of this leaching module and the spraying volume of the previous leaching module can be adjusted to achieve a balance of spraying volume.

[0052] In one embodiment, the second spray assembly is arranged parallel to the first spray assembly. In this invention, several first (second) spray assemblies are arranged horizontally, each with the same height and remaining horizontal without tilting. The two ends of each first (second) spray assembly are fixed to the wall panels on both sides of the leaching tank.

[0053] In one embodiment, the height of the horizontal centerline of the first spray pipe or the second spray pipe from the oil on the screen plate is H, and the distance between the vertical centerlines of the first spray pipe is N1, where N1 = (1.10 - 1.43) * H;

[0054] The distance between the vertical center lines of the second spray pipe is N2, where N2 = (1.10 - 1.43) * H.

[0055] The horizontal center distance N between the first (second) spray components within the first (second) spray mechanism, and the distance H between the center of the spray pipe of the spray component and the surface of the wet meal, are determined by the following: In order to improve the coverage rate of the mixed oil-501 spray in the leaching module, the coverage distance L should be as wide as possible. When a single spray component is working, the area M covered by the mixed oil-501 should be as wide as possible while ensuring that the mixed oil-501 falling from both sides of the overflow tank onto the surface of the wet meal is connected. Therefore, when M = (0.72~0.98)*H, the area M covered by the mixed oil-501 can reach a larger value.

[0056] The mixed oil 501 sprayed from adjacent first (second) spray units will travel a distance K when it falls onto the wet meal surface, see Figure 3 Since the first (second) spraying component will continuously spray a certain amount of mixed oil-501, and combined with the penetration rate of mixed oil-501 in the wet meal, when several first (second) spraying components are arranged in the first spraying mechanism according to the horizontal center distance N, this distance K will be filled and covered by mixed oil-501, and it is a continuous coverage. In this way, the mixed oil-501 sprayed by the first (second) spraying mechanism can reach a large value over a distance L.

[0057] A set of leaching modules is divided into two spraying mechanisms, which are also arranged horizontally. The first spraying mechanism is arranged first, on the left side (feed side) of the leaching module. The centerline of the spray pipe is H height above the wet meal. The center-to-center horizontal distances between the several first spraying components in the first spraying mechanism are arranged in N increments. The second spraying mechanism is arranged on the right side (discharge side) of the same leaching module. Similarly, the center-to-center horizontal distances between the several second spraying components in the second spraying mechanism are also arranged in N increments. A set of leaching modules is concentrated directly above one leaching module. A sieve plate for filtering mixed oil is installed below the leaching module, and an oil hopper for collecting mixed oil 502 is installed below the sieve plate. The leaching module, sieve plate, oil hopper, wet meal, and mixed oil 501 and mixed oil 502 constitute the leaching module.

[0058] The spread distance of the mixed oil sprayed by the first spray assembly 310 or the second spray assembly 410 is M, where M = (0.72-0.98) * H. The spread distance of the mixed oil sprayed by the first and second spray assemblies is L, where L is greater than three-fifths of the total length of the oil in the leaching module. The spray mechanism arranges the spray assemblies, and the relationship between the two distance dimensions N and H is: N = (1.10~1.43) * H. In this way, when several spray assemblies are arranged according to the horizontal center distance N within a subsystem, the spread distance L of the mixed oil sprayed by a single spray assembly can reach a larger value.

[0059] This invention can improve the extraction effect; increase the coverage of the spray; achieve a more obvious gradient of mixed oil concentration; balance the spray circulation volume; and obtain a modular leaching arrangement.

[0060] Each oil tank corresponds to an independent leaching module, and each leaching module contains two spraying mechanisms. This modular manufacturing standard eliminates the need for separate design and fabrication. It also ensures a uniform process layout, and the standardized modular leaching process simplifies the operator's adjustment of spray volume without requiring overly complex procedures.

[0061] When the first (second) spraying components of the first (second) spraying mechanism are arranged at a fixed distance, the mixed oil in the oil hopper below them will circulate through the first spraying mechanism, and the spraying volume will be supplied according to the oil content. When the spraying components of the second spraying mechanism to the right of the first spraying mechanism are also arranged at a fixed distance, the mixed oil sprayed by it is supplied by the oil hopper connected to the right side of the oil hopper below it. This arrangement of leaching modules constitutes a complete leaching module. The leaching module consists of several first (second) spraying components arranged at a certain distance. The mixed oil sprayed by these components will automatically fall onto the wet meal below the leaching module due to gravity. Each leaching module can achieve self-circulation + pre-pivot to balance the spraying circulation volume, thereby forming a mixed oil with a concentration gradient, thus improving leaching efficiency and reducing the workload of operation and adjustment.

[0062] Example 2

[0063] The leaching device is characterized by including the leaching module described in any of Embodiment 1. Specifically, the leaching modules are arranged sequentially along the material conveying direction.

[0064] The above embodiments are only for illustrating the technical features and concept of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made according to the spirit and implementation of this utility model should be covered within the protection scope of this utility model.

Claims

1. A leaching module, characterized in that it comprises: An oil hopper is used to hold mixed oils; A sieve plate is positioned above the oil hopper; The sieve plate is used to hold oil and filter mixed oil. A spraying mechanism, disposed above the sieve plate, includes: A first spraying mechanism is disposed on the feed side of the leaching module. The first spraying mechanism includes a plurality of first spraying components arranged sequentially along the material conveying direction. The first spraying mechanism is connected to the oil hopper via a first main pipe. A first circulating pump is disposed on the first main pipe. The first spraying component includes a first spray pipe. The horizontal center line of the first spray pipe is at a height H from the oil on the sieve plate. The distance between the vertical center lines of the first spray pipe is N1, where N1 = (1.10 - 1.43) * H. The second spraying mechanism is located on the discharge side of the leaching module. The second spraying mechanism includes several second spraying components arranged along the material conveying direction. The second spraying components are arranged parallel to the first spraying components. The second spraying mechanism is connected to the oil hopper of the adjacent leaching module via a second main pipe. A second circulating pump is installed on the second main pipe. The second spraying component includes a second spray pipe. The horizontal centerline of the second spray pipe is at a height of H from the oil on the screen plate. The distance between the vertical centerlines of the second spray pipe is N2, where N2 = (1.10 - 1.43) * H.

2. The leaching module according to claim 1, characterized in that, The first spray assembly further includes a first overflow trough; the first spray pipe is connected to the first main pipe via a first connecting flange and a first branch pipe; the first overflow trough is disposed below the first spray pipe; The second spray assembly further includes a second overflow trough; the second spray pipe is connected to the second main pipe via a second connecting flange and a second branch pipe; the second overflow trough is located below the second spray pipe.

3. The leaching module according to claim 2, characterized in that, A first valve is installed on the first branch pipe; A second valve is installed on the second branch pipe.

4. The leaching module according to claim 2, characterized in that, The first spray pipe or the second spray pipe is respectively installed on the walls on both sides of the leaching tank.

5. The leaching module according to claim 2, characterized in that, The distance by which the mixed oil sprayed by the first spray component or the second spray component covers the oil is M, where M = (0.72-0.98) * H.

6. The leaching module according to claim 2, characterized in that, The distance between the mixed oil covering the oil from the first spraying mechanism and the second spraying mechanism is L, which is greater than three-fifths of the total length of the oil in the leaching module.

7. The leaching module according to claim 1, characterized in that, The number of the first spray assembly is 1-3; The number of the second spray assembly is 1-3.

8. An leaching device, characterized in that, Includes the leaching module as described in any one of claims 1-7.

9. The leaching device according to claim 8, characterized in that, The leaching modules are arranged sequentially along the material conveying direction.

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