A membrane concentration device and a milk source concentration system

Abstract

The application provides a membrane concentration device and a milk source concentration system, and belongs to the technical field of membrane filtration. The membrane concentration device comprises an ultrafiltration membrane assembly body, a detection tube, a visual assembly and a processor. The inlet end of the detection tube is in communication with the filtrate outlet of the ultrafiltration membrane assembly body. The side wall of the detection tube is provided with a transparent window, the visual assembly is located outside the detection tube and is arranged towards the transparent window, and is used for acquiring image data of the filtrate in the detection tube. The processor stores standard data. The processor is used for comparing the image data detected by the visual assembly with the standard data to determine whether there is a broken wire in the ultrafiltration membrane assembly body. The integrity of the core membrane element can be continuously monitored, the broken wire condition can be found in time, the detection sensitivity for a small amount of broken wire is high, the dependence on manual detection is reduced, the operation cost is effectively reduced, and the missed detection rate is reduced.

Description

Technical Field

[0001] This application relates to the field of membrane filtration technology, and more specifically, to a membrane concentration device and a milk source concentration system. Background Technology

[0002] Hollow fiber ultrafiltration is a pressure-driven membrane separation technology, with hollow fiber ultrafiltration membranes as its core component. A membrane module typically contains a large number of ultrafiltration hollow fibers.

[0003] Ultrafiltration membranes are also used to concentrate milk sources to retain proteins in the milk, thereby increasing the protein content of the finished milk, concentrating nutrients, and making the texture thicker and smoother.

[0004] In actual production, if the hollow fibers of the ultrafiltration membrane break, it will directly affect the filtration and concentration quality. Usually, a large number of broken fibers can be inferred from the pressure gauge reading, but a small number of broken fibers (especially a very small number) are difficult to detect in time. However, in this case, the filtration quality has already begun to decline.

[0005] While sampling tests can be used to assist in identifying a small number of broken wires, the testing process takes time, which can lead to a delay in problem detection. Furthermore, sampling tests are intermittent, which can easily miss certain special cases of broken wires (where the port becomes clogged with particulate impurities after a period of time), resulting in missed detections. Summary of the Invention

[0006] The first objective of this application is to provide a membrane concentration device that can continuously monitor the integrity of core membrane elements, promptly detect broken fibers, and has high detection sensitivity even for small amounts of broken fibers. At the same time, it reduces reliance on manual inspection, effectively reducing operating costs and the rate of missed detection.

[0007] The second objective of this application is to provide a milk source concentration system that can continuously monitor the integrity of the core membrane element, promptly detect broken fibers, and has high detection sensitivity even for small amounts of broken fibers. At the same time, it reduces reliance on manual inspection, effectively reducing operating costs and the rate of missed detection.

[0008] The embodiments of this application are implemented as follows:

[0009] A membrane concentration apparatus includes: an ultrafiltration membrane module body, a detection tube, a vision component, and a processor.

[0010] The inlet end of the detection tube is connected to the filtrate outlet of the ultrafiltration membrane module.

[0011] A transparent window is provided on the side wall of the detection tube, and a vision component is located outside the detection tube and facing the transparent window to acquire image data of the filtrate inside the detection tube.

[0012] The vision component is electrically connected to the processor.

[0013] The processor stores standard data. It compares the image data detected by the vision component with this standard data to determine if there are broken fibers within the ultrafiltration membrane module.

[0014] The standard data is: the image of the filtrate in the detection tube obtained by the vision component when there are no broken fibers in the ultrafiltration membrane module.

[0015] Furthermore, the ultrafiltration membrane module itself is a tubular membrane module.

[0016] The detection tube is connected to the filtrate outlet end of the tubular outer shell of the ultrafiltration membrane module body.

[0017] The membrane concentration unit also includes: a flow guide column and a flow guide plate.

[0018] A flow guide column is located inside the detection tube, and the flow guide column is coaxial with the detection tube. One end of a flow guide plate is fixedly connected to the outer wall of the flow guide column. The flow guide plate is arranged radially along the detection tube, and its surface is parallel to the central axis of the detection tube. The end of the flow guide plate away from the flow guide column is fixedly connected to the tube wall of the detection tube.

[0019] The transparent window is located in the area between two adjacent deflectors.

[0020] Furthermore, a conical component is coaxially fixed to one end of the flow guide column near the ultrafiltration membrane module body, and the diameter of the bottom circle of the conical component is the same as the diameter of the flow guide column.

[0021] The tip of the conical piece is positioned close to the sealing resin layer at the filtrate outlet end of the ultrafiltration membrane module body.

[0022] Furthermore, the outer wall of the detection tube has an annular flange, which is coaxially arranged with the detection tube. Two annular flanges are spaced apart along the axial direction of the detection tube.

[0023] The detection tube is also equipped with a control ring, which is coaxially arranged with the detection tube and rotatably fitted onto two annular flanges. The inner wall of the control ring, the outer wall of the detection tube, and the two annular flanges together form a dark chamber.

[0024] The control ring has an internal gear ring, and the inner ring wall of the control ring has a colored layer.

[0025] The darkroom contains a rotating column and a first gear mechanism. The rotating column is rotatably fitted with an annular flange, and its rotation axis is parallel to the central axis of the detection tube. The vision mechanism is mounted on the rotating column. The rotating column has a first external gear ring, which is driven by the first gear mechanism to engage with the internal gear ring.

[0026] The control loop is driven by a driver.

[0027] When filtering and concentrating, the visual components are positioned facing the transparent window.

[0028] During backwashing, the driver drives the control ring to rotate, thereby rotating the vision assembly toward the inner ring wall of the control ring and toward the coating layer.

[0029] Furthermore, a mating cavity is provided on the end face of the flow guide column away from the ultrafiltration membrane module body. The mating cavity is coaxially arranged with the flow guide column and extends along the axial direction of the flow guide column.

[0030] The guide vane has an internal mounting hole that extends along its length. One end of the mounting hole extends into the dark chamber, and the other end extends into the mating cavity. A control rod is slidably fitted inside the mounting hole, and a sliding seal is formed between the control rod and the mounting hole.

[0031] The cavity is fitted with a gear that rotates within it, and the rotation axis of the gear is aligned with the central axis of the guide column.

[0032] The end of the control rod near the guide column is fitted with a mating tooth, and the end of the control rod near the control ring is connected to a mating rack.

[0033] The darkroom is also equipped with a second gear mechanism, which enables the rack and internal gear ring to be driven together.

[0034] A transmission rod is coaxially and fixedly connected to the gear, and a rotating shaft is coaxially and fixedly connected to the transmission rod, extending beyond the mating cavity. A guide vane is connected to the rotating shaft, located outside the mating cavity. Multiple guide vanes are evenly spaced along the circumference of the rotating shaft, and the guide vanes and the rotating shaft together constitute the guide fan blades.

[0035] During filtration and concentration, the mating teeth engage between two adjacent teeth of the gear to lock the gear in place.

[0036] During backwashing, the control ring drives the control lever toward the dark chamber via the second gear mechanism, thereby separating the mating teeth from the gear and releasing the gear lock.

[0037] Furthermore, the diameter of the rotating shaft is larger than the diameter of the transmission rod, and an adjustment hole is provided on the end face of the rotating shaft near the gear. The adjustment hole extends along the axial direction of the rotating shaft, and multiple adjustment holes are evenly spaced along the circumference of the rotating shaft.

[0038] Each adjusting hole has an adjusting rod that slides within it, and the adjusting rod has teeth arranged along its length.

[0039] The outer wall of the rotating shaft has radial holes, and multiple radial holes are evenly spaced along the circumference of the rotating shaft. Each radial hole corresponds to an adjustment hole, and each radial hole communicates with an adjustment hole.

[0040] A rotating rod is rotatably fitted inside the radial hole. The rotating rod has a second external gear ring, and the teeth of the adjusting rod mesh with the second external gear ring. The rotating rod extends outside the radial hole, and the guide vane is fixedly connected to the rotating rod.

[0041] A mating ring is also provided inside the mating cavity, and the mating ring is coaxially arranged with the mating cavity. Along the axial direction of the guide column, the mating ring is slidably fitted into the mating cavity, and the mating ring is located on the side of the rotating shaft closer to the gear. The adjusting rods are all fixedly connected to the mating ring.

[0042] Along the axial direction of the guide column, and in the direction from the rotating shaft to the gear, the outer diameter of the mating ring decreases.

[0043] There is an elastic element that abuts against the mating ring and the rotating shaft.

[0044] During filtration and concentration, the control rod extends into the mating cavity and pushes the mating ring toward the side where the rotating shaft is located, so that the guide vane is set parallel to the rotation axis centerline of the rotating shaft.

[0045] During backwashing, the end of the control lever near the gear retracts into the mounting hole, and the mating ring moves toward the side where the gear is located, so that the rotating rod rotates, thereby deflecting the guide vane.

[0046] Furthermore, the inner wall of the mounting hole on the side away from the rotating shaft is located on the same plane as the inner end wall of the mating cavity.

[0047] A sliding rod is also provided inside the mating cavity, with one sliding rod corresponding to each control rod. The sliding rod is arranged along the axial direction of the control rod. Along the axial direction of the control rod, the sliding rod slides against the inner end wall of the mating cavity.

[0048] The mating teeth are fixedly connected to the end of the sliding rod away from the control rod.

[0049] The diameter of the sliding rod is smaller than the diameter of the control rod.

[0050] During filtration and concentration, the control lever pushes the sliding rod to engage the mating teeth between two adjacent teeth of the gear, thereby locking the gear.

[0051] During backwashing, the end of the control lever near the gear retracts into the mounting hole to provide clearance for the sliding rod and the mating gear, and the mating ring moves toward the side where the gear is located and fits against the sliding rod.

[0052] Furthermore, a first pressure sensing component is provided on the end face of the control lever near the sliding lever, and the first pressure sensing component is electrically connected to the processor.

[0053] The rotating shaft and the inner wall of the mating cavity form a rotating seal.

[0054] The processor determines whether there is liquid entering the mating cavity based on the detection data from the first pressure sensing component.

[0055] Furthermore, the two side walls of the mating teeth for engaging with the gear are provided with second pressure sensing components, which are electrically connected to the processor.

[0056] During filtration and concentration, the processor determines whether the guide vanes have rotated into position based on the detection data from the second pressure sensing component.

[0057] A milk source concentration system includes: the membrane concentration device described above.

[0058] The beneficial effects of the technical solutions in this application include:

[0059] The membrane concentration device provided in this application embodiment can continuously monitor the integrity of the core membrane element, can detect broken fibers in a timely manner, and has high detection sensitivity for a small number of broken fibers. At the same time, it reduces the reliance on manual inspection, effectively reducing operating costs and the false negative rate.

[0060] The milk concentration system provided in this application embodiment can continuously monitor the integrity of the core membrane element, can detect broken fibers in a timely manner, and has high detection sensitivity for a small number of broken fibers. At the same time, it reduces the reliance on manual inspection, effectively reducing operating costs and the false negative rate. Attached Figure Description

[0061] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a schematic diagram of the overall structure of the membrane concentration apparatus provided in the embodiments of this application;

[0063] Figure 2 This is a schematic diagram of the detection tube from a side view (during filtration and concentration).

[0064] Figure 3 This is a schematic diagram of the structure of the darkroom;

[0065] Figure 4 This is a schematic diagram of the detection tube from an axial perspective (during filtration and concentration).

[0066] Figure 5 This is a schematic diagram of the structure at the flow guide column (during filtration and concentration).

[0067] Figure 6 A schematic diagram showing the engagement of the control lever, sliding lever, mating teeth, and gears (during filtration and concentration).

[0068] Figure 7 This is a schematic diagram of the detection tube from an axial perspective (during backflushing).

[0069] Figure 8 This is a schematic diagram of the structure at the guide column (during backflushing cleaning).

[0070] Figure 9 This is a schematic diagram of the detection tube from a side view (during backflushing).

[0071] Figure 10 A schematic diagram showing the engagement of the control lever, sliding lever, mating teeth, and gears (when just switched to backwashing).

[0072] Figure 11 This is a schematic diagram showing the engagement of the control lever, sliding lever, mating teeth, and gear (when the gear starts to rotate).

[0073] Explanation of reference numerals in the attached figures:

[0074] Ultrafiltration membrane module body 100; feed inlet 110; filtrate outlet 120; retention outlet 130; sealing resin layer 140; detection tube 200; transparent window 210; sub-region 220; transparent partition 230; annular flange 240; control ring 250; internal gear ring 251; coloring layer 252; rotating column 260; second gear mechanism 280; dark chamber 290; vision component 300; guide column 400; conical part 410; mating cavity 420; gear 430; transmission rod 440; rotating shaft 450; guide plate 451; adjustment hole 452; adjustment rod 453; rotating rod 454; mating ring 455; guide plate 500; mounting hole 510; control rod 520; mating tooth 530; mating rack 540; sliding rod 550. Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0076] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0077] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0079] Furthermore, the terms "vertical" and "parallel" do not mean that the parts must be absolutely vertical or parallel, but can be slightly tilted.

[0080] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0081] The technical solutions of this application will be described by way of example through some embodiments below.

[0082] See Figures 1-4 This application provides a membrane concentration device, which includes an ultrafiltration membrane module body 100, a detection tube 200, a vision component 300, and a processor (not shown in the figure).

[0083] The ultrafiltration membrane module body 100 has a feed liquid inlet 110, a filtrate outlet 120, and a retention liquid outlet 130. The filtrate outlet 120 is used to discharge the filtrate, which refers to the liquid obtained after the feed liquid passes through the ultrafiltration membrane, and the retention liquid refers to the liquid retained by the ultrafiltration membrane.

[0084] The inlet end of the detection tube 200 is connected to the filtrate outlet 120 of the ultrafiltration membrane module body 100.

[0085] A transparent window 210 is provided on the side wall of the detection tube 200. The vision component 300 is located outside the detection tube 200 and faces the transparent window 210 to acquire image data of the filtrate inside the detection tube 200. It is understood that, to ensure clear image data is obtained, a light source can be configured for the vision component 300 as needed. The light source can be located at the vision component 300 or inside the detection tube 200.

[0086] The vision component 300 is electrically connected to the processor.

[0087] The processor stores standard data. Standard data refers to the image of the filtrate in the detection tube 200 acquired by the vision component 300 when there are no broken fibers in the ultrafiltration membrane module body 100.

[0088] When using a membrane concentration device to filter and concentrate milk, the raw liquid (milk source) enters the ultrafiltration membrane module body 100 through the raw liquid inlet 110. Under the action of the ultrafiltration membrane, proteins, fats, etc. are retained and enter the retention liquid, thereby increasing the proportion of proteins, fats, etc. in the retention liquid.

[0089] The filtrate leaves the ultrafiltration membrane module body 100 through the filtrate outlet 120 and passes through the detection tube 200. The vision component 300 can continuously acquire image data of the filtrate.

[0090] After filtration through an ultrafiltration membrane, the filtrate contains no protein or fat and is normally clear and nearly transparent. However, if a fiber breaks in the ultrafiltration hollow fiber, protein and fat will enter the filtrate, causing a significant change in its color. Therefore, monitoring the color of the filtrate can be used to determine if a fiber breakage has occurred.

[0091] Based on this, the processor compares the image data detected by the vision component 300 with standard data to determine whether there are broken fibers in the ultrafiltration membrane module body 100. That is, when the image data detected by the vision component 300 matches the standard data, it means that there are no broken fibers; otherwise, there are broken fibers.

[0092] In actual comparison, the tolerance during comparison can be flexibly set according to actual needs, and this application does not impose specific restrictions.

[0093] Overall, the membrane concentration device provided in this application embodiment can continuously monitor the integrity of the core membrane element, can detect broken fibers in a timely manner, and has high detection sensitivity for a small number of broken fibers. At the same time, it reduces the reliance on manual inspection, effectively reducing operating costs and the false negative rate.

[0094] Furthermore, the ultrafiltration membrane module body 100 is a tubular membrane module. In this embodiment, the outer shell of the ultrafiltration membrane module body 100 is cylindrical, and the cross-section of the detection tube 200 is annular.

[0095] The detection tube 200 is connected to the filtrate outlet 120 end of the tubular shell of the ultrafiltration membrane module body 100.

[0096] The membrane concentration unit also includes: a flow guide column 400 and a flow guide plate 500.

[0097] The flow guide column 400 is located inside the detection tube 200. The flow guide column 400 is cylindrical and its diameter is smaller than the inner diameter of the detection tube 200. The flow guide column 400 and the detection tube 200 are coaxially arranged.

[0098] The guide plate 500 is a straight flat plate. One end of the guide plate 500 is fixedly connected to the outer wall of the guide column 400, and the other end is fixedly connected to the wall of the detection tube 200. The guide plate 500 is arranged radially along the detection tube 200, and the plate surface of the guide plate 500 is parallel to the central axis of the detection tube 200. There are multiple guide plates 500, which are evenly spaced along the circumference of the guide column 400.

[0099] Through this design, the flow guide column 400 and the flow guide plate 500 divide the flow area inside the detection tube 200 into multiple sub-regions 220 that are evenly spaced along the circumference of the detection tube 200.

[0100] A transparent window 210 is located in the area between two adjacent guide plates 500. On the side wall of the detection tube 200, a transparent window 210 is provided between every two adjacent guide plates 500. Multiple transparent windows 210 are evenly spaced along the circumference of the detection tube 200.

[0101] Each transparent window 210 is provided with a corresponding visual component 300, which is used to obtain image data of the filtrate in the corresponding sub-region 220 through the corresponding transparent window 210.

[0102] Optionally, each transparent window 210 can be made in the following way (but not limited to): a window is opened on the side wall of the detection tube 200, and for two adjacent guide plates 500 (for ease of description, one guide plate 500 is temporarily named plate A, and the other guide plate 500 is temporarily named plate B), the window is located in the area between plate A and plate B, and the window extends from the surface of plate A near plate B to the surface of plate B near plate A. Finally, the window is closed with a transparent partition 230 to obtain the transparent window 210.

[0103] Through the above design, the filtrate in the detection tube 200 is diverted to each sub-region 220, and each sub-region 220 is closer to the corresponding transparent window 210. This makes it easier for the vision component 300 to obtain a clear image of the filtrate in the corresponding sub-region 220, avoiding unclear images due to excessive water layer, thereby improving monitoring accuracy.

[0104] Furthermore, a conical component 410 is coaxially fixedly connected to one end of the flow guide column 400 near the ultrafiltration membrane module body 100, and the diameter of the bottom circle of the conical component 410 is the same as the diameter of the flow guide column 400.

[0105] In this embodiment, at the filtrate outlet 120 end of the ultrafiltration membrane module body 100, the outer shell of the ultrafiltration membrane module body 100 may not be fitted with an end cap. Instead, the detection tube 200 can be directly coaxially connected to the end of the outer shell of the ultrafiltration membrane module body 100. Figure 1 and Figure 2 As shown. Optionally, the inner diameter of the detection tube 200 is the same as the inner diameter of the outer shell of the ultrafiltration membrane module body 100. Correspondingly, the tip of the conical member 410 can be positioned close to the sealing resin layer 140 at the filtrate outlet 120 end of the ultrafiltration membrane module body 100.

[0106] With this design, because the detection tube 200 is closer to the sealing resin layer 140 at the outlet 120 of the filtrate, the filtrate can be more smoothly dispersed into each sub-region 220 under the guidance of the guide column 400 and the conical part 410. In addition, the guide plate 500 has a flow stabilizing effect. In this way, when a fiber breakage occurs, the dispersion speed of proteins, fats, etc. into the filtrate can be slowed down, which makes it easier for the vision component 300 to accurately and sensitively capture the color changes in the filtrate, thereby improving the monitoring accuracy.

[0107] Furthermore, the outer wall of the detection tube 200 has an annular flange 240, the cross-section of which is circular, and the annular flange 240 is coaxially arranged with the detection tube 200. There are two annular flanges 240, which are spaced apart along the axial direction of the detection tube 200.

[0108] The detection tube 200 is also surrounded by a control ring 250, which is coaxially arranged with the detection tube 200. The inner diameter of the control ring 250 is adapted to the outer diameter of the annular flange 240. The control ring 250 is rotatably fitted to the two annular flanges 240, and the center line of the rotation axis 450 of the control ring 250 is aligned with the central axis of the detection tube 200. The inner ring wall of the control ring 250, the outer ring wall of the detection tube 200, and the two annular flanges 240 together form a dark chamber 290.

[0109] The control ring 250 has an internal gear ring 251, and the inner ring wall of the control ring 250 has a coloring layer 252. Optionally, the coloring layer 252 extends continuously in a ring shape along the circumference of the control ring 250, and the internal gear ring 251 and the coloring layer 252 are distributed at intervals along the axial direction of the control ring 250.

[0110] The darkroom 290 is equipped with a rotating column 260 and a first gear mechanism (not shown in the figure).

[0111] The rotating column 260 is rotatably fitted to an annular flange 240, and the rotation axis 450 of the rotating column 260 is parallel to the central axis of the detection tube 200. The vision mechanism is mounted on the rotating column 260; optionally, the vision mechanism is mounted on the end face of the rotating column 260.

[0112] The rotating column 260 has a first external gear ring (not shown in the figure), and the first external gear ring and the internal gear ring 251 are driven by a first gear mechanism.

[0113] The control loop 250 is driven by a driver (not shown in the figure). The driver can be used to control the rotation of the control loop 250, thereby achieving state switching.

[0114] When the membrane concentration device performs filtration and concentration, the filtrate continuously flows out from the ultrafiltration membrane module body 100 and passes through the detection tube 200. At this time, the vision component 300 is positioned facing the transparent window 210.

[0115] When the membrane concentration unit requires backwashing, the supply of raw liquid (milk source) is cut off, and the retention liquid channel is also cut off. At this time, the filtrate outlet 120 serves as the flushing liquid inlet, and the raw liquid inlet 110 serves as the flushing liquid outlet, for backwashing the membrane concentration unit. Before the flushing liquid is introduced, the driver drives the control ring 250 to rotate. The control ring 250 then uses the internal gear ring 251 to drive the rotating column 260 to rotate, thereby causing the vision mechanism to deflect until the vision mechanism faces away from the transparent window 210. At this time, the vision component 300 rotates to face the colored layer 252 on the inner ring wall of the control ring 250. The specific color configuration of the colored layer 252 can be flexibly set according to the actual situation and needs. The colored layer 252 is used for color calibration of the vision mechanism.

[0116] The above design allows for color calibration of the vision mechanism during the backwashing process (it can be understood that a light source can also be configured near the color coating layer 252 according to actual needs), thereby ensuring the color accuracy of the image data acquired by the vision mechanism and reducing the false judgment rate.

[0117] Furthermore, please combine Figure 5 and Figure 6A mating cavity 420 is formed on the end face of the flow guide column 400 away from the ultrafiltration membrane module body 100. The entire cavity 420 is cylindrical and is coaxially arranged with the flow guide column 400. The mating cavity 420 extends along the axial direction of the flow guide column 400 towards the end where the conical member 410 is located. The mating cavity 420 does not extend through the other end of the flow guide column 400.

[0118] The guide plate 500 has an installation hole 510 inside, which extends along the length of the guide plate 500 and also extends radially along the detection tube 200. One end of the installation hole 510 passes through the outer wall of the detection tube 200 and connects to the dark chamber 290, while the other end passes through the inner wall of the mating cavity 420 and connects to the mating cavity 420.

[0119] A control rod 520 is slidably fitted inside the mounting hole 510, and there is a sliding seal between the control rod 520 and the mounting hole 510.

[0120] A gear 430 is rotatably fitted within the mating cavity 420. The center line of the rotation axis 450 of the gear 430 coincides with the central axis of the guide column 400. The outer diameter of the gear 430 is smaller than the inner diameter of the mating cavity 420. The gear 430 is positioned close to the inner end wall of the mating cavity 420.

[0121] The end of the control lever 520 near the guide column 400 is fitted with a mating tooth 530, and the end of the control lever 520 near the control ring 250 is connected to a mating rack 540, which extends into the dark chamber 290.

[0122] The darkroom 290 is also equipped with a second gear mechanism 280, which enables the rack 540 and the internal gear ring 251 to be driven together.

[0123] A transmission rod 440 is coaxially fixedly connected to the side of the gear 430 away from the ultrafiltration membrane module body 100. A rotating shaft 450 is coaxially fixedly connected to the end of the transmission rod 440 away from the gear 430. The rotating shaft 450 extends out of the mating cavity 420.

[0124] The rotating shaft 450 is connected to a guide vane 451. The guide vane 451 is located outside the mating cavity 420 and on the side of the guide plate 500 away from the ultrafiltration membrane module body 100. Multiple guide vanes 451 are evenly spaced along the circumference of the rotating shaft 450. The guide vane 451 and the rotating shaft 450 together constitute the guide fan blade.

[0125] During filtration and concentration, the mating tooth 530 engages with the gear 430, with the mating tooth 530 fitting between two adjacent teeth of the gear 430 to prevent the gear 430 from rotating, thus locking the gear 430. At this time, the guide fan blades do not rotate, which helps to keep the filtrate passing through sub-region 220 as stable as possible, reducing turbulence and facilitating the formation of a stable flow layer. This slows down the dispersion rate of proteins, fats, etc., into the filtrate, making it easier for the vision component 300 to accurately and sensitively capture color changes in the filtrate, thus improving monitoring accuracy.

[0126] During backwashing, the actuator drives the control ring 250 to rotate, causing the vision mechanism to reverse color calibration. Simultaneously, the control ring 250 also drives the control lever 520 to move into the darkroom 290 via the second gear mechanism 280. Figure 7 As shown, this allows the mating teeth 530 to separate from the gear 430, thereby releasing the locking of the mating teeth 530 onto the gear 430. In this way, during the backwashing process, the flushing fluid can smoothly drive the guide fan blades to rotate, causing the flushing fluid entering each sub-region 220 to generate circumferential flow (vortex). This improves the flushing effect of the flushing fluid on the transparent partition 230, guide plate 500, and guide column 400, thus ensuring the cleanliness of the transparent partition 230, guide plate 500, and guide column 400 and avoiding interference with image data.

[0127] In this embodiment, please refer to Figure 8 The diameter of the transmission rod 440 is smaller than the inner diameter of the mating cavity 420, and the diameter of the rotating shaft 450 is larger than the diameter of the transmission rod 440.

[0128] An adjustment hole 452 is provided on the end face of the rotating shaft 450 near the gear 430. The adjustment hole 452 extends axially along the rotating shaft 450 and extends beyond the mating cavity 420, but does not penetrate the end face of the rotating shaft 450 away from the transmission rod 440. Multiple adjustment holes 452 are evenly spaced along the circumference of the rotating shaft 450.

[0129] Each adjustment hole 452 is slidably fitted with an adjustment rod 453, which has teeth arranged along its length (forming a rack-like structure).

[0130] The outer wall of the rotating shaft 450 has radial holes, and multiple radial holes are evenly spaced along the circumference of the rotating shaft 450. The radial holes are arranged in a one-to-one correspondence with the adjustment holes 452, and each radial hole is connected to an adjustment hole 452.

[0131] A rotating rod 454 is rotatably fitted inside the radial hole. The rotating rod 454 has a second external gear ring (not shown in the figure), and the teeth of the adjusting rod 453 mesh with the second external gear ring. When the adjusting rod 453 slides along the adjusting hole 452, the adjusting rod 453 can drive the rotating rod 454 to rotate inside the radial hole, thereby changing the angle of the guide vane 451.

[0132] The guide vane 451 is in the shape of a straight flat plate. The rotating rod 454 extends beyond the radial hole, and one end of the guide vane 451 is fixedly connected to the rotating rod 454. The guide vane 451 is arranged radially along the rotating shaft 450.

[0133] A mating ring 455 is also provided inside the mating cavity 420. In this embodiment, the mating ring 455 is annular and coaxially arranged with the mating cavity 420. The outer side of the mating ring 455 is in contact with the inner wall of the mating cavity 420. The mating ring 455 is coaxially arranged with the guide column 400, and the inner diameter of the mating ring 455 is larger than the outer diameter of the transmission rod 440.

[0134] Along the circumferential direction of the guide column 400, the mating ring 455 is rotatably received in the mating cavity 420. Along the axial direction of the guide column 400, the mating ring 455 is slidably received in the mating cavity 420.

[0135] The mating ring 455 is located on the side of the rotating shaft 450 near the gear 430, and the mating ring 455 is ringed around the transmission rod 440. The end of the adjusting rod 453 away from the rotating rod 454 is fixedly connected to the mating ring 455.

[0136] Along the axial direction of the guide column 400, and in the direction from the rotating shaft 450 towards the gear 430, the outer diameter of the mating ring 455 decreases progressively. The inner ring wall of the mating ring 455 is a cylindrical wall (i.e., its shape is the same as the side surface shape of a cylinder). In other words, the outer ring wall of the mating ring 455 is inclined relative to its inner ring wall.

[0137] An elastic element (not shown in the figure) abuts between the mating ring 455 and the rotating shaft 450.

[0138] When the end of the control lever 520 near the gear 430 retracts into the mounting hole 510, under the action of the elastic element, the mating ring 455 will move axially along the mating cavity 420 to near the opening of the mounting hole 510, such as... Figure 8 As shown.

[0139] During filtration and concentration, the control rod 520 extends into the mating cavity 420 and locks the gear 430 with the mating teeth 530. When the control rod 520 extends into the mating cavity 420, it can push the outer ring wall of the mating ring 455 towards the side where the rotating shaft 450 is located. Figure 5As shown. In this way, the adjusting rod 453 will be pushed into the adjusting hole 452, and the adjusting rod 453 can drive the rotating rod 454 to rotate. When the control rod 520 extends into the mating cavity 420 and locks the gear 430 with the mating teeth 530, the mating ring 455 stops moving. At this time, the guide vane 451 rotates parallel to the center line of the rotating shaft 450, as shown. Figure 2 As shown in the diagram. Through this design, during the filtration and concentration process, the guide vane 451, like the guide plate 500, plays a role in stabilizing the flow. This can further improve the flow stability of the sub-region 220 and its vicinity, reduce turbulence, and facilitate the formation of a stable flow layer. This slows down the dispersion rate of proteins, fats, etc., into the filtrate, making it easier for the vision component 300 to accurately and sensitively capture color changes in the filtrate and improve monitoring accuracy.

[0140] During backwashing, the end of the control lever 520 near the gear 430 retracts into the mounting hole 510, releasing the lock on the gear 430. The mating ring 455, under the action of the elastic element, moves back to its original position towards the side where the gear 430 is located. At this time, the rotating rod 454 rotates. When the mating ring 455 reaches its final position, the guide vane 451 deflects at a certain angle relative to the filtration and concentration process, such as... Figure 9 As shown in the diagram. This design allows the flushing fluid to drive the guide vanes to rotate during backwashing, ensuring effective flushing of the transparent baffle 230, guide plate 500, and guide column 400. Optionally, when the mating ring 455 is in position, the deflection angle of the guide vane 451 relative to the filtration and concentration process is 10°-20°, but not limited to this; the specific deflection angle can be flexibly set according to actual conditions and needs.

[0141] In this embodiment, the mounting hole 510 has a rectangular cross-section. The inner wall of the mounting hole 510 away from the rotating shaft 450 is located on the same plane as the inner end wall of the mating cavity 420. This plane is set perpendicular to the central axis of the detection tube 200.

[0142] Please combine Figure 10 A sliding rod 550 is also provided inside the mating cavity 420. Each control rod 520 is correspondingly provided with one sliding rod 550, and the sliding rod 550 is arranged along the axial direction of the control rod 520. Along the axial direction of the control rod 520, the sliding rod 550 slides against the inner end wall of the mating cavity 420. During the sliding process along the axial direction of the control rod 520, the sliding rod 550 can partially slide into the mounting hole 510.

[0143] The mating gear 530 is fixedly connected to the end of the sliding rod 550 away from the control rod 520.

[0144] The diameter of the sliding rod 550 is smaller than the diameter of the control rod 520. In this embodiment, the distance between the side surface of the control rod 520 away from the ultrafiltration membrane assembly body 100 and the inner wall of the mounting hole 510 near the ultrafiltration membrane assembly body 100 is the first distance, and the distance between the side surface of the sliding rod 550 away from the ultrafiltration membrane assembly body 100 and the inner end wall of the mating cavity 420 is the second distance, wherein the first distance is greater than the second distance.

[0145] For the portion of the rotating shaft 450 located within the mating cavity 420, the diameter of this portion is adapted to the inner diameter of the mating cavity 420, and the rotating shaft 450 and the inner wall of the mating cavity 420 form a rotational seal.

[0146] During filtration and concentration, the control rod 520 extends into the mating cavity 420, pushing the sliding rod 550 toward the gear 430, causing the mating teeth 530 to engage between two adjacent teeth of the gear 430, thereby locking the gear 430. At the same time, the control rod 520 pushes the mating ring 455 toward the rotating shaft 450.

[0147] During backflushing, the end of the control lever 520 near the gear 430 retracts into the mounting hole 510, separating the control lever 520 from the sliding rod 550. Simultaneously, the mating ring 455, under the action of the elastic element, returns to its original position near the opening of the mounting hole 510 and engages with the sliding rod 550. In this embodiment, lubrication is applied between the mating ring 455 and the sliding element. This design provides a stopping point for the mating ring 455 using the sliding rod 550. Furthermore, the retraction of the control lever 520 provides clearance for the sliding rod 550 and the mating teeth 530 to avoid the gear 430, thus unlocking the gear 430. When the guide fan blades begin to rotate with the flushing fluid, the teeth of the gear 430 can push the mating teeth 530 and the sliding rod 550 towards the side where the mounting hole 510 is located, causing the mating teeth 530 to separate from the gear 430. Figure 11 As shown, in this way, the rotation of gear 430 is not hindered during the backwashing process.

[0148] In this embodiment, after the mating tooth 530 is completely separated from the gear 430, the mating tooth 530 is still located within the annular range of the mating ring 455.

[0149] Optionally, when the control ring 250 switches back to the "filtration and concentration state," in order to reduce the probability of the teeth of the mating gear 530 and the gear 430 colliding, the control ring 250 can be driven to rotate in advance when the backwashing is about to end, so that the equipment returns to the "filtration and concentration state" in advance. In this way, the gear 430 is in a rotating state during the switching, which allows the mating gear 530 to smoothly engage with the gear 430. This is not limited to this.

[0150] Optionally, a first pressure sensing component (not shown in the figure) may be provided on one end face of the control lever 520 near the sliding lever 550, and the first pressure sensing component is electrically connected to the processor.

[0151] With this design, the processor can determine whether there is liquid entering the mating cavity 420 based on the detection data of the first pressure sensing component (i.e., whether the liquid in the detection tube 200 has entered the mating cavity 420).

[0152] Specifically, when switching from backwashing to filtration and concentration, the control lever 520 gradually moves closer to the sliding lever 550. If a certain amount of liquid enters the mating cavity 420 (or it is filled with liquid), the pressure detected by the first pressure sensing component will be higher than when there is no liquid in the mating cavity 420.

[0153] In another scenario, when switching from the filtration and concentration state to the backwashing state, the control rod 520 separates from the sliding rod 550 first. When the gear 430 starts to rotate, the sliding rod 550 begins to move toward the control rod 520 and partially extends into the mounting hole 510. If the mating cavity 420 is filled with liquid, the side of the control rod 520 near the mating cavity 420 is also filled with liquid (i.e., some liquid enters the mounting hole 510). During the process of the sliding rod 550 entering the mounting hole 510, the pressure detected by the first pressure sensing component will be slightly higher for a short period of time compared to when there is no liquid in the mating cavity 420.

[0154] Therefore, it can be determined whether there is liquid entering the mating cavity 420 based on the detection data of the first pressure sensing component.

[0155] Optionally, the two side walls of the mating gear 530 that mate with the gear 430 may also be provided with a second pressure sensing component (not shown in the figure), and the second pressure sensing component is electrically connected to the processor.

[0156] During filtration and concentration, the gear 430 is locked by the meshing of the gear 530 and the gear 430. The processor can determine whether the guide vane 451 has rotated into place (i.e., whether the guide vane 451 has rotated back to be parallel to the central axis of the detection tube 200) based on the detection data of the second pressure sensing component.

[0157] Specifically, if the guide vane 451 is not rotated to its proper position, it will remain tilted. Under the influence of the filtered liquid, the guide fan blades will tend to move circumferentially, leading to an imbalance of pressure on both sides of the mating teeth 530. Therefore, the detection data from the second pressure sensing component can be used to determine whether the guide vane 451 has rotated to its proper position.

[0158] The above design enables fault self-diagnosis.

[0159] This application also provides a milk source concentration system, which includes the above-mentioned membrane concentration device.

[0160] In summary, the membrane concentration apparatus provided in this application embodiment can continuously monitor the integrity of the core membrane element, promptly detect membrane breaks, and has high detection sensitivity even for small amounts of broken membranes. It also reduces reliance on manual inspection, effectively lowering operating costs and the false negative rate. The milk source concentration system provided in this application embodiment can continuously monitor the integrity of the core membrane element, promptly detect membrane breaks, and has high detection sensitivity even for small amounts of broken membranes. It also reduces reliance on manual inspection, effectively lowering operating costs and the false negative rate.

[0161] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A membrane concentration device, characterized by, The application relates to a membrane concentration device. The device comprises an ultrafiltration membrane assembly body, a detection tube, a visual assembly and a processor. An inlet end of the detection tube is in communication with a filtrate outlet of the ultrafiltration membrane assembly body. A side wall of the detection tube is provided with a transparent window, and the visual assembly is located outside the detection tube and is arranged towards the transparent window to obtain image data of the filtrate in the detection tube. The visual assembly is electrically connected with the processor. The processor stores standard data. The processor compares the image data detected by the visual assembly with the standard data to determine whether there is a broken wire in the ultrafiltration membrane assembly body. When the ultrafiltration membrane assembly body has no broken wire, the image of the filtrate in the detection tube obtained by the visual assembly is the standard data. The ultrafiltration membrane assembly body is a tubular membrane assembly. The detection tube is connected with a filtrate outlet end of a tubular shell of the ultrafiltration membrane assembly body. The membrane concentration device further comprises a flow guide column and a flow guide plate. The flow guide column is arranged coaxially with the detection tube.

2. The membrane concentration device of claim 1, wherein One end of the flow guide plate is fixedly connected to the outer side wall of the flow guide column. The flow guide plate is arranged along the radial direction of the detection tube.

3. The membrane concentration device of claim 1, wherein, The transparent window is arranged between two adjacent flow guide plates. One end of the flow guide column close to the ultrafiltration membrane assembly body is coaxially fixedly connected with a conical part. The tip of the conical part is close to the sealing resin layer of the filtrate outlet end of the ultrafiltration membrane assembly body. The outer side wall of the detection tube has annular flanges arranged coaxially with the detection tube. The annular flanges are arranged at intervals along the axial direction of the detection tube. The detection tube is further provided with a control ring arranged coaxially with the detection tube. The control ring is rotatably matched with the annular flanges.

4. The membrane concentration device of claim 3, wherein, The inner ring wall of the control ring, the outer side wall of the detection tube and the annular flanges jointly form a darkroom. The control ring has an inner gear ring, and the inner ring wall of the control ring has a color coating layer. The darkroom is provided with a rotating column and a first gear mechanism. The rotating column is rotatably matched with the annular flanges. The rotating column has a first outer gear ring. The first outer gear ring is transmissionally matched with the inner gear ring through the first gear mechanism. The control ring is driven by a driver. During filtration and concentration, the visual assembly is arranged towards the transparent window. During backwashing, the driver drives the control ring to rotate, so that the visual assembly is arranged towards the inner ring wall of the control ring and towards the color coating layer. The end face of the flow guide column away from the ultrafiltration membrane assembly body is provided with a matching cavity arranged coaxially with the flow guide column and extending along the axial direction of the flow guide column. The installation hole is extended along the length direction of the flow guide plate; one end of the installation hole penetrates to the dark chamber, and the other end penetrates to the matching cavity; a control rod is slidingly matched in the installation hole, and the control rod and the installation hole are slidingly sealed; The matching cavity is rotationally matched with a gear, and the rotation axis of the gear is arranged in coincidence with the central axis of the flow guide column; The end of the control rod close to the flow guide column is matched with a matching tooth, and the end of the control rod close to the control ring is connected with a matching rack; The dark chamber is also provided with a second gear mechanism, and the matching rack and the inner gear ring are drivingly matched through the second gear mechanism; The gear is coaxially fixedly connected with a transmission rod, the transmission rod is coaxially fixedly connected with a rotating shaft, and the rotating shaft extends out of the matching cavity; The rotating shaft is connected with a flow guide piece, the flow guide piece is located outside the matching cavity, a plurality of flow guide pieces are uniformly arranged along the circumferential direction of the rotating shaft, and the flow guide piece and the rotating shaft jointly constitute a flow guide fan blade; During filtration and concentration, the matching tooth is matched between two adjacent teeth of the gear to lock the gear; During back flushing, the control ring drives the control rod to move towards the dark chamber through the second gear mechanism, so that the matching tooth is separated from the gear, and the locking of the gear is released.

5. The membrane concentration device of claim 4, wherein, The diameter of the rotating shaft is greater than the diameter of the transmission rod, an adjusting hole is formed in the end face of the rotating shaft close to the gear, the adjusting hole extends along the axial direction of the rotating shaft, and a plurality of adjusting holes are uniformly arranged along the circumferential direction of the rotating shaft; An adjusting rod is slidingly matched in the adjusting hole, and the adjusting rod has a tooth portion arranged along the length direction thereof; A radial hole is formed in the outer side wall of the rotating shaft, a plurality of radial holes are uniformly arranged along the circumferential direction of the rotating shaft, and the radial hole and the adjusting hole are arranged in one-to-one correspondence, and each radial hole is in communication with one adjusting hole; A rotating rod is rotationally matched in the radial hole, the rotating rod has a second outer gear ring, the tooth portion of the adjusting rod is engaged with the second outer gear ring, the rotating rod extends out of the radial hole, and the flow guide piece is fixedly connected to the rotating rod; A matching ring is further arranged in the matching cavity, the matching ring is coaxially arranged with the matching cavity; along the axial direction of the flow guide column, the matching ring is slidingly matched in the matching cavity, and the matching ring is located on the side of the rotating shaft close to the gear; the adjusting rod is fixedly connected to the matching ring; Along the axial direction of the flow guide column and in the direction from the rotating shaft to the gear, the outer diameter of the matching ring decreases; A resilient member is in abutment between the matching ring and the rotating shaft; During filtration and concentration, the control rod extends into the matching cavity, and the control rod pushes the matching ring towards the side where the rotating shaft is located, so that the flow guide piece is arranged in parallel to the rotation axis of the rotating shaft; When back-flushing, the control rod is retracted into the mounting hole at the end close to the gear, the matching ring moves towards the side where the gear is located to rotate the rotating rod, thereby deflecting the deflector.

6. The membrane concentration device of claim 5, wherein, The inner wall of the side of the mounting hole away from the rotating shaft is in the same plane as the inner end wall of the matching cavity; The matching cavity is further provided with a sliding rod, and each control rod is provided with a corresponding sliding rod, which is arranged along the axial direction of the control rod; The matching teeth are fixedly connected to the end of the sliding rod away from the control rod; The diameter of the sliding rod is smaller than that of the control rod; When filtering and concentrating, the control rod pushes the sliding rod to make the matching teeth fit between the two adjacent teeth of the gear to lock the gear; When back-flushing, the control rod is retracted into the mounting hole at the end close to the gear, the matching ring moves towards the side where the gear is located to rotate the rotating rod, thereby deflecting the deflector.

7. The membrane concentration device of claim 6, wherein, The end surface of the control rod close to the sliding rod is provided with a first pressure sensing component, which is electrically connected to the processor; The rotating shaft is rotationally sealed with the inner wall of the matching cavity; The processor determines whether liquid enters the matching cavity according to the detection data of the first pressure sensing component.

8. The membrane concentration device of claim 6, wherein, The two side walls of the matching teeth for matching with the gear are provided with a second pressure sensing component, which is electrically connected to the processor; When filtering and concentrating, the processor determines whether the deflector is rotated into place according to the detection data of the second pressure sensing component.

9. A milk source concentration system characterized by, The membrane concentration device comprises: The membrane concentration device according to any one of claims 1-8.

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