A salted duck egg desalting and cleaning device

Abstract

This invention relates to the field of food processing technology and discloses a desalting and cleaning device for salted duck eggs. The device includes a frame, processing pipes, a drive and conveying system, a water circulation system, and a control system. The processing pipes are inclined and internally divided into series processing chambers by multiple deformable diaphragms. Each deformable diaphragm has a variable-diameter channel at its center for the egg to pass through, and its side surface has scraping protrusions. The deformable diaphragms have a double-layered cavity structure and are connected to a pressure control pipeline, allowing them to actively deform to apply periodic alternating pressure to the water in the chambers, achieving "differential pressure breathing" desalting and cleaning. The device operates in a cyclical sequence of alternating pressure desalting and cleaning, and scraping conveying. Combined with an independent sludge collection pipe and water circulation system, it significantly saves water consumption during cleaning, achieving efficient and low-damage cleaning of the salt mud on the surface of salted duck eggs, increasing cleaning speed, and adapting to different egg sizes to meet various production needs.

Description

Technical Field

[0001] This invention relates to the field of food processing technology, and in particular to a desalting and cleaning device for salted duck eggs. Background Technology

[0002] Salted duck eggs, as a traditional food, often require desalting and cleaning before further processing (such as making egg yolk pastries, mooncakes, and dishes). This process removes residual salt mud and stains from the eggshell surface and reduces the amount of salt that penetrates to the egg white, thereby improving the texture and flavor uniformity of the final product. Currently, the industry commonly uses three main processing technologies, each with significant limitations: Traditional manual or semi-mechanized cleaning methods often involve manual scrubbing or prolonged soaking and rinsing in simple water tanks. This method is labor-intensive, has extremely low production efficiency, and carries a high risk of eggshell breakage.

[0003] Static soaking or tank-type series washing line: Salted duck eggs are soaked in still water or multiple tanks connected in series. In order to pursue a certain efficiency, high flow rate water replacement or multiple tanks connected in series are usually used, resulting in huge water consumption and a large amount of high salt mud wastewater. Moreover, water replacement is troublesome and environmental treatment costs are high, which can no longer meet the needs of large-scale and standardized production.

[0004] Mechanical brushing or drum cleaning machines: These methods use rotating brushes, rollers, or drums to scrub the eggs. While this improves surface cleaning efficiency, it introduces several significant problems: the rigid mechanical contact and impact can easily cause eggshell cracks or damage, resulting in economic losses; the cleaning intensity cannot be adjusted in real-time and flexibly according to differences in egg size, shell thickness, or the degree of salt and mud adhesion, making it impossible to achieve "low-damage" intelligent processing; and water consumption is severe.

[0005] In summary, existing technologies generally face problems such as high water consumption, high eggshell breakage rates, and inconsistencies in cleaning and transporting eggs of different sizes, making them unsuitable for large-scale, standardized production. Therefore, solutions are urgently needed. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a desalting and cleaning device for salted duck eggs.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A salted duck egg desalting and cleaning device includes: a frame, and processing pipes, a drive conveying system, a water circulation system and a control system installed on the frame; The processing pipeline is inclined, with a feed hopper at the high end and a discharge port at the low end. The interior of the processing pipeline is divided into multiple processing chambers in series by multiple deformable diaphragms arranged at intervals along the axial direction. The deformable diaphragm has a variable-diameter channel in the center for a single salted duck egg to pass through; The drive and conveying system includes a fluid drive mechanism for driving the water in the processing pipeline and the salted duck eggs to move downstream synchronously and intermittently, and a lifting mechanism set at the discharge port for receiving and lifting the salted duck eggs. The water circulation system is in fluid communication with both the high-end and low-end of the treatment pipeline.

[0008] Preferably, the deformable diaphragm is a double-layer structure with a sandwich cavity. A pressure control pipeline communicating with the sandwich cavity is fixedly installed on the surface of the deformable diaphragm and the pressure control pipeline is connected to a positive and negative pressure air source. The sandwich cavity of the deformable diaphragm deforms under the drive of pressure changes, thereby actively changing the volume of the processing chamber to apply periodic alternating pressure to the water in the processing chamber.

[0009] Preferably, the deformable diaphragm has a plurality of scraping protrusions on its side surface facing the adjacent downstream processing compartment.

[0010] Preferably, the fluid drive mechanism is a reciprocating water pump; The control system is configured to control the salted duck egg desalting and cleaning device to operate according to the following timing sequence: S1, Pressure Alternating Desalination and Cleaning Stage: Control the pressure in the pipeline to cause the deformable diaphragm to deform periodically, and perform differential pressure breathing desalination on the salted duck eggs. At this time, the reciprocating water pump is suspended. S2, Scraping and Conveying Stage: The pressure control pipeline exhausts air to reset the deformable diaphragm, starts the reciprocating water pump, and drives the salted duck egg through the variable diameter channel of the downstream deformable diaphragm to enter the next processing chamber to complete the surface scraping and station transfer.

[0011] Preferably, the reciprocating water pump includes a pump body and a telescopic cylinder. The pump body is fixedly installed on the surface of the treatment pipeline and communicates with the inner cavity of the treatment pipeline. A drain port is provided on the surface of the pump body. The telescopic cylinder is fixedly installed on the upper end of the pump body. A piston is slidably installed inside the pump body. The telescopic end of the telescopic cylinder is fixedly connected to the piston. A through hole is opened on the surface of the piston. A check plate covering the through hole is installed on the upper end of the piston. When the piston moves down to the bottom of the pump body, the stepped surface inside the pump body blocks the bottom end of the through hole.

[0012] Preferably, the water circulation system includes a water tank fixed on the frame, the processing pipeline is arranged inside the water tank, a partition is fixedly installed inside the water tank, the partition divides the inner cavity of the water tank into an upper return channel and a lower water storage cavity, the feed hopper and the drain outlet are both located on the partition, so that the cleaning liquid discharged from the drain outlet flows back to the high end of the processing pipeline through the return channel; a sleeve-shaped inflatable and closable sealing airbag is fixedly installed inside the high end of the processing pipeline.

[0013] Preferably, the lifting mechanism includes: a housing, and an indexing turntable rotatably mounted within the housing; The indexing turntable has a ring array of receiving grooves on its edge. The end face of the indexing turntable is a sealing surface that is periodically aligned with the discharge port. An inflatable annular airbag is fixedly installed at the opening of the discharge port. The inflated annular airbag expands and presses against the sealing surface to seal. A drive motor is used to drive the indexing turntable to rotate intermittently. When the receiving groove is aligned with the discharge port, the salted duck eggs roll into the receiving groove. As the indexing turntable rotates, the salted duck eggs that have fallen into the receiving groove are lifted to the discharge window on the upper side of the shell.

[0014] The housing contains a first auxiliary brush and a second auxiliary brush, which are fixedly installed inside the housing and are respectively arranged on both sides of the indexing turntable.

[0015] Preferably, multiple independent sludge collection pipes are fixedly installed on the surface of the processing pipeline. One end of each sludge collection pipe is connected to the bottom of one of the processing chambers, and the other end is connected to a common sludge collection main pipe. A sludge discharge valve is provided at the end of the sludge collection main pipe. Each of the multiple processing chambers is equipped with an egg tray support for supporting salted duck eggs.

[0016] The present invention has the following beneficial effects: 1. The desalination and cleaning device proposed in this invention controls the pressure of the sandwich cavity of the deformable diaphragm, causing it to deform periodically to actively change the volume of the processing chamber, thereby applying alternating pressure to the water used to soak the salted duck eggs. This "differential pressure breathing" effect can forcibly promote the loosening of salt mud inside and outside the micropores of the eggshell. Combined with the egg body passing through the deformable diaphragm to achieve material transportation, it accelerates the peeling of the surface mud layer. Compared with traditional static soaking or flowing rinsing, it shortens the salt mud cleaning time and improves production efficiency. The entire process is mainly based on flexible hydraulic transportation, avoiding hard mechanical collisions and reducing the eggshell breakage rate.

[0017] 2. The desalination and cleaning device proposed in this invention features scraping protrusions on the side surface of a deformable diaphragm. When an egg passes through a variable-diameter channel, the salt and mud on the egg's surface can be scraped off. Furthermore, by adjusting the pressure within the interlayer cavity, the deformation state and protrusion degree of the diaphragm can be actively controlled, thereby changing the positive pressure and contact state of the scraping protrusions on the egg's surface. This allows for a switch from "powerful scraping" of stubborn mud to "gentle cleaning" of fragile egg surfaces. This design achieves flexible and adjustable cleaning intensity, enabling both high-pressure rapid scraping of stubborn salt and mud and gentle pressure treatment of fragile eggs. It ensures efficient cleaning while avoiding damage, improving cleaning speed and adaptability to eggs of different sizes.

[0018] 3. The desalination and cleaning device proposed in this invention employs a closed-loop water circulation system within the treatment pipeline, relying on a series of independent treatment chambers to synchronize and segment the water flow with the egg-shaped cleaning material. Each treatment chamber has an independent collection pipe at its bottom. Sludge generated during scraping is immediately confined within a single chamber and settles into the collection pipe by gravity before being discharged, thus limiting the diffusion of contaminants in the circulating water. This design achieves highly efficient recycling of cleaning water within the treatment pipeline, while minimizing the water volume and reducing the burden of water changes. It significantly saves water consumption compared to traditional running water and pool cleaning methods.

[0019] 4. The desalination and cleaning device proposed in this invention integrates multiple processes such as cleaning, desalination, conveying, and lifting into a compact processing pipeline, occupying a small area. The flexible and deformable diaphragm and variable-diameter channel can adapt to the size of the egg. Combined with adjustable and controllable pressure, water flow, and timing parameters, a single unit can flexibly adapt to and efficiently process salted duck eggs from different curing processes (mud / brine / vacuum curing), improving the versatility of the production line and the overall production efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the desalination and cleaning device proposed in this invention. Figure 1 .

[0021] Figure 2 This is a three-dimensional structural diagram of the desalination and cleaning device proposed in this invention. Figure 2 .

[0022] Figure 3 This is a schematic diagram of the front section of the desalination and cleaning device proposed in this invention.

[0023] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the processing pipeline proposed in this invention.

[0024] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the pump body proposed in this invention.

[0025] Figure 6 This is an exploded structural diagram of the lifting mechanism proposed in this invention.

[0026] Figure 7 This is a three-dimensional structural diagram of the indexing turntable proposed in this invention.

[0027] Figure 8 This is a partially enlarged cross-sectional view of the processing pipe proposed in this invention, showing a salted duck egg passing through a variable-diameter channel.

[0028] Figure 9 This is a cross-sectional view of the deformable diaphragm proposed in this invention, showing that the deformable diaphragm expands and deforms after the interlayer cavity is inflated.

[0029] Figure 10 This is a cross-sectional view of the lifting mechanism proposed in this invention, showing the salted duck egg falling into the receiving groove and being lifted to a high position as the indexing turntable rotates.

[0030] In the picture: 100. Processing pipeline; 101. Feed hopper; 102. Discharge port; 103. Deformable diaphragm; 104. Processing chamber; 105. Variable diameter channel; 106. Jacketed cavity; 107. Pressure control pipeline; 108. Scraping protrusion; 109. Egg tray support; 200. Fluid drive mechanism; 201. Pump body; 202. Telescopic cylinder; 203. Drain port; 204. Piston; 205. Through hole; 207. Check valve; 208. Stepped surface; 300. Lifting mechanism; 301. Housing; 302. Indexing turntable; 303. Receiving groove; 304. Sealing surface; 305. Annular airbag; 306. Drive motor; 307. First auxiliary brush; 308. Second auxiliary brush; 309. Axial blind hole; 310. Axial through hole; 311. Radial connecting hole; 400. Water tank; 401. Partition; 402. Sealing airbag; 500. Sewage collection pipe; 501. Main sewage collection pipe; 502. Slag discharge valve. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Example 1 like Figures 1-10 As shown, a salted duck egg desalting and cleaning device includes a frame, a processing pipe 100 installed on the frame, a drive conveying system, a water circulation system and a control system.

[0034] Piping and Compartment Structure refer to Figure 3 The processing pipeline 100 has a straight pipe structure and is inclined. A feed hopper 101 is fixedly installed at the high end of the processing pipeline 100, and a discharge port 102 is set at the low end. Multiple deformable diaphragms 103 (made of rubber) are installed at intervals along the axial direction in the inner cavity of the processing pipeline 100. A processing chamber 104 is formed between two adjacent deformable diaphragms 103. Multiple processing chambers 104 are arranged in series along the axial direction of the processing pipeline 100 to realize segmented soaking and segmented cleaning.

[0035] refer to Figure 4 Each deformable diaphragm 103 has a variable-diameter channel 105 at its center, which allows a single salted duck egg to pass through under hydraulic propulsion and enter the downstream processing chamber 104, thus achieving "single-egg segmented transfer". To reduce collisions and maintain the stability of the egg's posture, an egg tray support 109 is provided in each processing chamber 104. The egg tray support 109 can be an arc-shaped support or a grid support structure, so that the salted duck egg is in a semi-floating and semi-supported state.

[0036] Differential pressure alternating structure of deformable diaphragm like Figure 9 As shown, the deformable diaphragm 103 preferably has a double-layer diaphragm structure, with a sandwich cavity 106 formed between the two layers. A pressure control pipeline 107 connected to the sandwich cavity 106 is fixedly installed on the surface of the deformable diaphragm 103. The pressure control pipeline 107 is connected to a positive pressure air source and a negative pressure air source (or an integrated positive and negative pressure generator).

[0037] The control system uses the pressure control pipeline 107 to periodically inflate / extract air from the interlayer cavity 106, causing the deformable diaphragm 103 to deform periodically. This results in a periodic change in the effective volume of the processing chamber 104, generating alternating pressure on the cleaning fluid within the processing chamber 104. The salted duck eggs are immersed or partially immersed in the cleaning fluid. Under alternating pressure, the liquid within the eggshell micropores undergoes a reciprocating exchange of "inhalation / exhalation," thereby enhancing the mass transfer process of salt diffusion from the egg surface to the cleaning fluid. This achieves differential pressure respiration desalination. Furthermore, this "differential pressure respiration" effect forcibly promotes the loosening of salt mud inside and outside the eggshell micropores, preparing for subsequent removal of salt mud from the egg surface.

[0038] Synergistic cleaning of scraping protrusions and variable diameter channels like Figure 4 , Figure 9 As shown, the deformable diaphragm 103 has a plurality of scraping protrusions 108 on the side surface facing the adjacent downstream processing chamber 104. The scraping protrusions 108 can be flexible rubber bumps, striped ridges, or bristle-like protrusions, and their height and hardness can be selected according to the eggshell strength and the degree of mud and salt adhesion.

[0039] like Figure 9 As shown, when the control system enters the conveying stage, the salted duck egg, propelled by the water, passes through the variable-diameter channel 105 of the downstream deformable diaphragm 103. The eggshell surface undergoes controlled friction with the scraping protrusions 108, thereby scraping off the salt mud / mud shell from the outer surface of the eggshell. Since the deformable diaphragm 103 can adjust its deformation state through the pressure of the interlayer cavity 106, such as... Figure 9 As shown, after the interlayer cavity 106 is inflated, the deformable diaphragm 103 expands and deforms, and the effective diameter of the variable diameter channel 105 and the contact pressure of the scraping protrusion 108 can also change accordingly, thereby realizing the switching between "stronger scraping (stubborn mud shell) / softer scraping (easily damaged eggshell or thinner mud layer)".

[0040] Drive conveyor system like Figure 5As shown, the fluid drive mechanism 200 is preferably a reciprocating water pump, including a pump body 201 and a telescopic cylinder 202. The pump body 201 is fixedly installed on the outer surface of the processing pipeline 100 and communicates with the inner cavity of the processing pipeline 100. The upper end of the pump body 201 is provided with a drain port 203. The telescopic cylinder 202 is installed on the upper end of the pump body 201, and the telescopic end of the telescopic cylinder 202 is fixedly connected to the piston 204 inside the pump body 201. A through hole 205 is provided on the piston 204, and a check plate 207 covering the through hole 205 is installed on the upper end of the piston 204. When the piston 204 moves down to the bottom of the pump body 201, the stepped surface 208 inside the pump body 201 blocks the bottom end of the through hole 205, so as to form a one-way pumping condition together with the check plate 207. Specifically, when the piston 204 moves down, the cleaning fluid is pressed into the through hole 205, pushes open the check plate 207 (the check plate 207 deforms), and then enters the upper side of the piston 204. When the piston 204 moves up, the cleaning fluid on the upper side of the piston 204 is lifted and discharged from the drain port 203. When the bottom of the piston 204 is pressed tightly on the stepped surface 208, the through hole 205 is closed, realizing the cut-off between the pump body 201 and the treatment pipeline 100.

[0041] Under the control of the control system, the reciprocating water pump works intermittently, causing the water in the treatment pipeline 100 to generate a pulsed propulsion flow, which in turn drives the salted duck eggs in the treatment chamber 104 to pass through the variable diameter channel 105 at the appropriate time and enter the next treatment chamber 104, realizing the simultaneous completion of scraping and transfer.

[0042] It should be noted that, in order to ensure the desalination and cleaning effect of alternating pressure and the stability of the hydraulic propulsion direction, the connection position between the pump body 201 and the treatment pipeline 100 can be set at the lower end of the pipeline section, so that the pumping forms a downstream suction flow path.

[0043] Water circulation system like Figures 1-3 As shown, the water circulation system includes a water tank 400, and a treatment pipe 100 is arranged inside the water tank 400. A partition 401 is fixedly installed inside the water tank 400, dividing the inner cavity of the water tank 400 into an upper return tank and a lower water storage chamber. The feed hopper 101 and the drain port 203 are both located in the area above the partition 401, so that the cleaning liquid discharged from the drain port 203 enters the return tank and then flows back to the high-end area of ​​the treatment pipe 100, entering the treatment pipe 100, thus realizing the recycling of the cleaning liquid.

[0044] A sleeve-shaped, inflatable, openable, and closable sealing airbag 402 is fixedly installed inside the high end of the processing pipeline 100. When the sealing airbag 402 is inflated, it can seal or restrict the flow at the high end of the processing pipeline 100, thereby improving the system's airtightness and pressure response during the differential pressure alternating desalination and cleaning stage. When the sealing airbag 402 is deflated and contracted, the salted duck egg can pass through the sleeve-shaped sealing airbag 402 and enter the processing chamber 104.

[0045] Discharge Lifting Mechanism like Figure 6 , Figure 7 , Figure 10 As shown, the lifting mechanism 300 is arranged at the discharge port 102, including a housing 301 and an indexing turntable 302 rotatably installed in the housing 301. The edge of the indexing turntable 302 is provided with a ring array of receiving grooves 303, which are used to accommodate a single salted duck egg; the end face of the indexing turntable 302 is provided with a sealing surface 304, which periodically aligns with the discharge port 102 to form a seal when the indexing stops.

[0046] An inflatable annular airbag 305 is fixedly installed at the opening of the discharge port 102. After the annular airbag 305 is inflated, it presses against the sealing surface 304 to achieve a reliable seal of the discharge port 102 and reduce leakage and backflow disturbance during the differential pressure alternating desalination and cleaning stage. The drive motor 306 drives the indexing turntable 302 to rotate intermittently: when a certain receiving tank 303 is aligned with the discharge port 102, the salted duck egg rolls into the receiving tank 303 under the action of gravity and water flow; then the indexing turntable 302 rotates, lifting the salted duck egg to the discharge window on the upper side of the shell 301 for output.

[0047] To further remove residual salt mud, a first auxiliary brush 307 and a second auxiliary brush 308 are fixedly installed inside the housing 301, and the first auxiliary brush 307 and the second auxiliary brush 308 are arranged on both sides of the indexing turntable 302.

[0048] It should be noted that, as Figure 7 As shown, each receiving groove 303 includes an axial blind hole 309, an axial through hole 310, and a radial connecting hole 311. The axial blind hole 309 and the axial through hole 310 are connected through the radial connecting hole 311. The salted duck eggs discharged from the discharge port 102 first enter the axial blind hole 309, and then fall into the axial through hole 310 from the radial connecting hole 311. The bristles of the first auxiliary brush 307 and the second auxiliary brush 308 can extend into the axial through hole 310. During the rotation of the indexing turntable 302, the salted duck eggs come into contact with the bristles of the first auxiliary brush 307 and the second auxiliary brush 308, achieving secondary washing. (Reference) Figure 10 When the salted duck egg is lifted to the discharge window on the upper side of the shell 301, the bristles of the first auxiliary brush 307 push the salted duck egg in the axial through hole 310 to be discharged.

[0049] Sewage structure like Figure 2As shown, multiple independent sludge collection pipes 500 are fixedly installed on the surface of the treatment pipeline 100. One end of each sludge collection pipe 500 is connected to the bottom of the corresponding treatment chamber 104, and the other end merges into the main sludge collection pipe 501. A sludge discharge valve 502 is installed at the end of the main sludge collection pipe 501. Heavier particles such as salt mud and sand that have been soaked and scraped off settle at the bottom of the treatment chamber 104 and enter the sludge collection pipe 500 and are discharged in a concentrated manner. This reduces the diffusion of pollutants in the cleaning solution in each treatment chamber 104, thus reducing the impact on the cleaning capacity of the downstream treatment chamber 104 and improving the service life of the circulating water.

[0050] The working process of this embodiment Filling and feeding: The water storage chamber of the water tank 400 is filled with cleaning solution. The cleaning solution is pumped into the return tank on the upper side of the partition 401 by the water pump. The sealing airbag 402 is opened (to release air) so that the processing pipe 100 and each processing chamber 104 are filled or basically filled with cleaning solution. The water pump flow rate is controlled with a certain water depth in the feed hopper 101 as a reference standard to maintain the liquid level in the return tank. Then, salted duck eggs are added through the feed hopper 101. The salted duck eggs are sucked into each processing chamber 104 by the intermittent operation of the reciprocating water pump.

[0051] S1 Pressure Alternating Desalination Cleaning Stage: Inflate the sealing airbag 402 and the annular airbag 305. The sealing airbag 402 expands and seals the upper end of the treatment pipe 100. The annular airbag 305 expands and presses against the sealing surface 304 to seal. At the same time, the bottom of the piston 204 presses against the stepped surface 208, so that the through hole 205 is closed. Subsequently, the pressure control pipeline 107 is controlled to alternately inflate / extract air from the interlayer cavity 106 at a set frequency and amplitude, driving the deformable diaphragm 103 to deform periodically, applying alternating pressure to the water in the treatment chamber 104, and realizing differential pressure breathing desalination and cleaning; at this time, the reciprocating water pump is paused.

[0052] S2 Scraping and Conveying Stage: The control system causes the pressure control pipeline 107 to reset the deformable diaphragm 103 to a state that facilitates passage (the variable diameter channel 105 expands to allow a single egg to pass through), and starts the reciprocating water pump to generate pulsed water flow, pushing the salted duck eggs through the variable diameter channel 105 of the downstream deformable diaphragm 103 in sequence and rubbing them against the scraping protrusions 108, completing the removal of surface salt mud and entering the next processing chamber 104.

[0053] Multi-compartment circulating treatment: Salted duck eggs repeatedly undergo "S1 pressure alternating desalination and cleaning stage - S2 scraping and conveying stage" in multiple treatment compartments 104 until they reach the discharge port 102. During this process, each time a salted duck egg passes through the variable diameter channel 105, the scraped salt mud will remain in the previous treatment compartment 104. Along the direction of salted duck eggs and water flow, the concentration of salt mud in each treatment compartment 104 gradually decreases. The heavily polluted mud scraped off from the upstream is confined to the treatment compartment 104 near the source and collected through the sludge collection pipe 500. This effectively prevents the diffusion of pollutants in the circulating water and cross-contamination between eggs, ensuring the relative cleanliness of the final cleaning water and extending the service life of the cleaning solution.

[0054] Discharge lifting: The indexing turntable 302 receives the material during alignment and lifts the salted duck eggs to the discharge window after indexing and rotation; the first auxiliary brush 307 and the second auxiliary brush 308 perform a second light brushing and cleaning of the egg body.

[0055] Slag removal maintenance: Observe the cleaning fluid in the return tank on the upper side of the baffle 401, periodically open the slag discharge valve 502 to discharge the sediment in the sludge collection main pipe 501, and add cleaning fluid or change the fluid if necessary.

[0056] Example 2 Based on Example 1, the difference is that the pressure control pipeline 107 does not use the same pressure and phase control of all deformable diaphragms 103, but divides multiple deformable diaphragms 103 into at least two groups (e.g., upstream group, midstream group, downstream group), and each group is controlled by an independent solenoid valve and pressure regulator to achieve zoned pressure curves.

[0057] Upstream processing chamber 104: Employs a lower frequency / larger pressure differential to enhance the initial desalination and cleaning drive force; Midstream processing chamber 104: Employs a moderate pressure differential and a longer S1 time to improve uniformity; Downstream processing compartment 104: Reduce the positive pressure of the scraping protrusion 108 and increase the opening of the variable diameter channel 105 to reduce the risk of breakage during the end conveying and discharge process.

[0058] Example 3 Based on Example 1, the difference lies in that: at the moment when the indexing turntable 302 aligns the "accommodating groove 303 with the discharge port 102", the control system controls the annular airbag 305 to briefly release air to reduce the sealing pressure; after the salted duck egg rolls into the accommodating groove 303, the control system controls the annular airbag 305 to inflate again to restore the seal, increasing the reliability of the bottom seal of the processing pipeline 100, and improving the reliable sealing environment of the processing pipeline 100 during the pressure alternating desalination and cleaning stage. This is achieved by rotating the indexing turntable 302 to switch the positions of the discharge port 102 and the sealing surface 304, thus solving the contradiction between "process tightness" and "material throughput" in the continuous processing production of this device.

[0059] Example 4 This embodiment describes a method for processing salted duck eggs using the apparatus described in Embodiment 1. 1. High-efficiency cleaning mode, the specific steps are as follows: S100: Fill the system with cleaning fluid and feed salted duck eggs with salt mud on the surface into the processing pipe 100 from the feed hopper 101. S200: Alternating pressure is applied to the interlayer cavity 106 of the deformable diaphragm 103, causing the volume of the treatment chamber 104 to change periodically, and alternating pressure is applied to the water body to perform differential pressure breathing cleaning; the differential pressure amplitude is 10-15 kPa, the frequency is 0.25-0.55 Hz, and the cumulative time of S1 is 1-2 min. S300: The reciprocating water pump is turned on to push the egg through the variable diameter channel 105, and the salt mud on the surface of the egg is flexibly peeled off by the edge of the variable diameter channel 105 and the scraping protrusion 108. S400: Activate the lifting mechanism to discharge material at 300 mm. After discharge, the main focus is on the cleanliness of the egg's appearance.

[0060] 2. Desalination and cleaning treatment mode, the specific steps are as follows: S500: Using the apparatus described in another embodiment 1, cleaning fluid is introduced into the system, and salted duck eggs that have been identified as high-salinity batches by sampling inspection are fed into the processing pipe 100 from the feed hopper 101. S600: Alternating pressure is applied to the interlayer cavity 106 of the deformable diaphragm 103, causing the volume of the treatment chamber 104 to change periodically. Alternating pressure is applied to the water in the treatment chamber 104 to perform differential pressure breathing desalination and cleaning. The differential pressure amplitude is 15-18 kPa, the frequency is 0.50-0.80 Hz, and the cumulative time of S1 is 110-160 min to ensure sufficient desalination depth. S700: The cleaning solution is replenished at a rate of 10%–30% / h of the effective liquid volume to dynamically update the cleaning solution and maintain the external salinity gradient; after the pressure difference breathing desalination cleaning of S600, the water inside and outside the eggshell micropores generates a strong "inhalation-extrusion" effect under the drive of alternating pressure difference, which forcibly promotes the diffusion of high salt from the eggshell and surface to the external cleaning solution, greatly improving the mass transfer efficiency; S800: After depressurizing the interlayer cavity 106, turn on the reciprocating water pump and lifting mechanism 300 to discharge the processed salted duck eggs in an orderly manner. After completion, conduct a salinity test. For unqualified products, repeat S500-S700.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A desalting and cleaning device for salted duck eggs, characterized in that, include: The rack, and the processing pipes (100) installed on the rack, the drive conveying system, the water circulation system and the control system; The processing pipe (100) is inclined, and a feed hopper (101) is provided at the high end of the processing pipe (100), and a discharge port (102) is provided at the low end of the processing pipe (100). The interior of the processing pipe (100) is divided into multiple processing chambers (104) in series by multiple deformable diaphragms (103) arranged at intervals along the axial direction. The deformable diaphragm (103) has a variable diameter channel (105) in the center for a single salted duck egg to pass through. The drive and conveying system includes a fluid drive mechanism (200) for driving the water in the processing pipeline (100) and the salted duck eggs to move downstream synchronously and intermittently, and a lifting mechanism (300) set at the discharge port (102) for receiving and lifting the salted duck eggs. The water circulation system is in fluid communication with the high end and low end of the treatment pipeline (100).

2. The salted duck egg desalting and cleaning device according to claim 1, characterized in that: The deformable diaphragm (103) is a double-layer structure with a sandwich cavity (106). A pressure control pipeline (107) communicating with the sandwich cavity (106) is fixedly installed on the surface of the deformable diaphragm (103). The pressure control pipeline (107) is connected to a positive and negative pressure air source. The sandwich cavity (106) of the deformable diaphragm (103) deforms under pressure change, thereby actively changing the volume of the processing chamber (104) to apply periodic alternating pressure to the water in the processing chamber (104).

3. The salted duck egg desalting and cleaning device according to claim 2, characterized in that: The deformable diaphragm (103) has a plurality of scraping protrusions (108) on its side surface facing the adjacent downstream processing compartment (104).

4. The salted duck egg desalting and cleaning device according to claim 1, characterized in that: The fluid drive mechanism (200) is a reciprocating water pump; The control system is configured to control the salted duck egg desalting and cleaning device to operate according to the following timing sequence: S1, Pressure alternating desalination and cleaning stage: Control the pressure of the control pipeline (107) to make the deformable diaphragm (103) deform periodically, and perform differential pressure breathing desalination on the salted duck eggs. At this time, the reciprocating water pump is suspended. S2, Scraping and conveying stage: The pressure control pipeline (107) exhausts air to reset the deformable diaphragm (103), starts the reciprocating water pump, and drives the salted duck egg through the variable diameter channel (105) of the downstream deformable diaphragm (103) to enter the next processing chamber (104) to complete the surface scraping and station transfer.

5. The salted duck egg desalting and cleaning device according to claim 4, characterized in that: The reciprocating water pump includes a pump body (201) and a telescopic cylinder (202). The pump body (201) is fixedly installed on the surface of the treatment pipe (100) and communicates with the inner cavity of the treatment pipe (100). The surface of the pump body (201) is provided with a drain port (203). The telescopic cylinder (202) is fixedly installed on the upper end of the pump body (201). A piston (204) is slidably installed inside the pump body (201). The telescopic end of the telescopic cylinder (202) is fixedly connected to the piston (204). A through hole (205) is opened on the surface of the piston (204). A check plate (207) covering the through hole (205) is installed on the upper end of the piston (204). When the piston (204) moves down to the bottom of the pump body (201), the stepped surface (208) inside the pump body (201) blocks the bottom end of the through hole (205).

6. The salted duck egg desalting and cleaning device according to claim 5, characterized in that: The water circulation system includes a water tank (400) fixed on the frame, and the processing pipe (100) is arranged inside the water tank (400). A partition (401) is fixedly installed inside the water tank (400). The partition (401) divides the inner cavity of the water tank (400) into an upper reflux trough and a lower water storage chamber. The feed hopper (101) and the drain port (203) are both located on the partition (401) so that the cleaning liquid discharged from the drain port (203) flows back to the high end of the processing pipe (100) through the reflux trough. A sleeve-shaped, inflatable, and closable sealing airbag (402) is fixedly installed inside the high end of the processing pipe (100).

7. The salted duck egg desalting and cleaning device according to claim 1, characterized in that: The lifting mechanism (300) includes: a housing (301) and an indexing turntable (302) rotatably mounted in the housing (301). The indexing turntable (302) has an annular array of receiving grooves (303) on its edge. The end face of the indexing turntable (302) is a sealing surface (304) that is periodically aligned with the discharge port (102). An inflatable annular airbag (305) is fixedly installed at the opening of the discharge port (102). The inflated annular airbag (305) expands and presses against the sealing surface (304) to seal. A drive motor (306) is used to drive the indexing turntable (302) to rotate intermittently. When the receiving groove (303) is aligned with the discharge port (102), the salted duck eggs roll into the receiving groove (303). As the indexing turntable (302) rotates, the salted duck eggs that fall into the receiving groove (303) are lifted to the discharge window on the upper side of the shell (301).

8. The salted duck egg desalting and cleaning device according to claim 7, characterized in that: The housing (301) is fixedly installed with a first auxiliary brush (307) and a second auxiliary brush (308), which are respectively arranged on both sides of the indexing turntable (302).

9. A salted duck egg desalting and cleaning device according to any one of claims 1-8, characterized in that: Multiple independent sludge collection pipes (500) are fixedly installed on the surface of the processing pipe (100). One end of each sludge collection pipe (500) is connected to the bottom of a processing chamber (104), and the other end is connected to a common sludge collection main pipe (501). A sludge discharge valve (502) is provided at the end of the sludge collection main pipe (501).

10. A salted duck egg desalting and cleaning device according to claim 9, characterized in that: Each of the multiple processing chambers (104) is equipped with an egg tray support (109) for supporting salted duck eggs.

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