Egg white recycling device

Abstract

The utility model discloses an egg white recycling device, which aims to solve the problems of low egg white utilization rate, low egg yolk cleaning efficiency and easiness in breakage in the prior art, and comprises an egg white circulating device which is internally provided with a plurality of independent filter cells; the egg white collecting device collects egg white through a roller conveyor belt and a funnel and guides the egg white into the egg white circulating device; the temporary storage box is used for temporarily storing part of egg white; the cleaning box is used for receiving the filtered egg white to clean stains on the surface of the egg yolk; and the water pump is used for driving the egg white to circularly flow in the device and conveying the filtered egg white to the cleaning box or the outside. The egg white recycling device can effectively collect and recycle egg white generated in the egg processing process, improves the quality of the egg white through multi-stage filtration, and innovatively utilizes the filtered egg white to clean egg yolk, so that the egg yolk breakage rate is expected to be reduced, the utilization efficiency of the egg white is improved, and the egg white recycling device has environmental protection benefits.

Description

Technical Field

[0001] This utility model relates to the field of egg product processing technology, specifically to an egg white recycling device. Background Technology

[0002] Eggs are widely used as an important raw material in the food processing industry. During egg processing, such as the preparation of egg liquid and the production of baked goods, a large amount of egg white is often generated. How to effectively handle and utilize this egg white, avoiding resource waste and environmental pollution, has always been a concern within the industry. In existing technologies, egg white is generally filtered and used directly in the next process. For cleaning salted duck egg yolks, cooking oil, peanut oil, or water are commonly used to remove surface stains. This method is not only inefficient but also easily damages the yolks, resulting in insufficient utilization of the egg white. Common treatments for egg white generated during egg processing include direct disposal, use as animal feed, or simple processing for use in low-value-added products. However, direct disposal not only wastes resources but may also burden the environment.

[0003] Therefore, there is a need for a device for cleaning stains on the surface of salted duck egg yolks to improve the utilization rate of egg whites, reduce yolk breakage, and achieve efficient resource utilization. Utility Model Content

[0004] In order to overcome the technical defects of insufficient egg white utilization, low yolk washing efficiency and easy breakage of egg yolk in the existing technology, this utility model provides an egg white recycling device.

[0005] To solve the above problems, this utility model is implemented according to the following technical solution:

[0006] The egg white recycling device of this utility model includes:

[0007] An egg white circulation device, wherein the egg white circulation device has multiple independent filter chambers arranged inside along the direction of egg white flow, each chamber having an open top and a closed bottom;

[0008] An egg white collection device includes a bottom funnel and a roller conveyor belt disposed above the funnel. Egg white flows into the funnel through the gaps in the roller conveyor belt. The end of the funnel is connected to the first chamber of an egg white circulation device through a pipe.

[0009] A temporary storage box is provided on the side of the egg white circulation device and downstream of the egg white collection device. The side wall of the temporary storage box is connected to the side wall of the middle compartment of the egg white circulation device through a pipe, and is used to store a portion of the egg white discharged from the egg white collection device.

[0010] A cleaning tank, the bottom of which is connected to the side wall of the middle compartment of the egg white circulation device via a pipe;

[0011] A water pump is installed in the end chamber of the egg white circulation device. Its inlet end is connected to the bottom of the end chamber through a pipe, and its outlet end is divided into a first branch and a second branch. The first branch extends to the top of the cleaning tank and uses some egg white to clean the stains on the surface of the egg yolk. The second branch is connected to an external conveying pipe.

[0012] Preferably, the filter chamber is provided with a detachable filter structure, the filter structure comprising:

[0013] A crossbeam is fixed longitudinally within the egg white circulation device, and the side of the crossbeam is welded with longitudinally arranged quick-release slots.

[0014] A filter frame, wherein the filter frame is detachably connected to the crossbeam via a quick-release slot;

[0015] A filter frame, which is installed on the top of the first end compartment;

[0016] The quick-release slot has an embedded elastic retaining spring, and the edge of the filter frame has a protrusion that matches the retaining spring.

[0017] Preferably, the inner wall of the quick-release slot is provided with a waist-shaped recess, one end of the retaining spring is fixedly installed in the waist-shaped recess, and the other end of the retaining spring is fixedly connected to a limiting block. When the filter frame is inserted into the quick-release slot, the protrusion on the edge can squeeze the inclined surface to deform the retaining spring.

[0018] Once the protrusion passes the limiting block, the retaining spring returns to its elastic state, and the limiting block prevents the protrusion from dislodging from the quick-release slot.

[0019] Preferably, the filter structure is distributed in layers;

[0020] The filter frame of the first chamber is configured as a metal filter frame, and the mesh size of the filter frames in subsequent chambers increases progressively along the direction of egg white flow.

[0021] Preferably, the outlet end of the water pump is provided with a three-way diverter valve, the input end of the three-way diverter valve is connected to the water pump, the two output ends are respectively connected to the first branch and the second branch, and the valve body is provided with a manual adjustment knob.

[0022] Preferably, the bottom of the end chamber is provided with a liquid outlet, and an anti-clogging filter cover is provided at the liquid outlet. The pore size of the anti-clogging filter cover is smaller than the mesh size of the filter screen frame inside the end chamber.

[0023] Preferably, the cleaning tank is equipped with a liquid level sensor, and the external delivery pipe is equipped with a pressure sensor. The liquid level sensor and the pressure sensor are electrically connected to the water pump controller.

[0024] The water pump is controlled by a liquid level sensor inside the cleaning tank and a pressure sensor in the external delivery pipeline. When the liquid level is lower than the threshold value and exceeds the set value, the water pump will automatically start and stop.

[0025] Preferably, it further includes a connection channel, the connection channel comprising:

[0026] The first connecting channel has its inlet end connected to the end of the roller conveyor belt and its outlet end extending to the top of the temporary storage box.

[0027] The second connecting channel has its inlet end connected to the cleaning tank and its outlet end extended to the side wall of the temporary storage tank.

[0028] Preferably, the egg white collection device further includes a guide channel, which is located below the roller conveyor belt and its end is aligned with the top opening of the funnel, for guiding the egg white into the funnel.

[0029] Preferably, at least some of the parts of the egg white circulation device, egg white collection device, temporary storage box, and washing box that come into contact with the egg white are made of food-grade stainless steel or food-grade plastic.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] This invention provides an egg white recycling device that effectively collects egg white generated during egg processing and reuses it through a circulating filtration process, significantly improving the utilization rate of egg white and reducing resource waste caused by direct disposal. The device uses filtered egg white as a cleaning medium, pumped to a cleaning tank to clean stains from the egg yolk surface. Compared to traditional methods of cleaning with cooking oil, peanut oil, or water, egg white cleaning is gentler, helping to reduce yolk breakage and improve product quality. The egg white recycling device has multiple independent filter chambers, enabling multi-stage filtration of the egg white to gradually remove impurities and obtain high-purity filtered egg white, meeting the needs of subsequent cleaning or other processes. The first and second branch pipes at the pump outlet allow for flexible control of the filtered egg white flow according to actual needs, enabling it to be used for cleaning egg yolks or transported externally for further processing or storage, improving the device's practicality. Reducing direct egg white waste lowers the potential environmental burden. Furthermore, if it can effectively replace traditional cleaning media, it may also bring certain environmental benefits. Attached Figure Description

[0032] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0033] Figure 1 This is an overall schematic diagram of an egg white recycling device according to this utility model;

[0034] Figure 2 This is a perspective view of the egg white collection device, temporary storage box, and washing box of this utility model;

[0035] Figure 3 This is a perspective view of the egg white circulation device of this utility model;

[0036] Figure 4 This is a top cross-sectional view of the plug-in structure of this utility model;

[0037] Figure 5 This is a schematic diagram showing the flow direction of egg white in the egg white circulation device in this utility model;

[0038] Figure 6 This is a partially enlarged schematic diagram of the egg white circulation device in this utility model;

[0039] Figure 7 This is a cross-sectional view of the egg white collection device in this utility model;

[0040] In the diagram: Egg white circulation device-10, egg white collection device-20, temporary storage tank-30, cleaning tank-40, water pump-50, detachable filter structure-60, three-way diverter valve-70, liquid outlet-80, connecting channel-100; filter compartment-11, first end compartment-12, middle compartment-13, end compartment-14; funnel-21, roller conveyor belt-22; first branch-51, second branch-52; crossbeam-61, quick release slot-62, filter screen frame-63, filter frame-64, snap ring-65, protrusion-66, limit block-67; manual adjustment knob-71; anti-clogging filter cover-81; first connecting channel-101, second connecting channel-102, guide channel-110. Detailed Implementation

[0041] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0042] like Figures 1 to 7 As shown, the egg white recycling device of this utility model includes:

[0043] The egg white circulation device 10 has multiple independent filter chambers 11 arranged inside along the direction of egg white flow. Adjacent filter chambers 11 are separated by a partition. The top of each filter chamber 11 is open and the bottom is closed.

[0044] Egg white collection device 20 includes a bottom funnel 21 and a roller conveyor belt 22 disposed above the funnel 21. Egg white flows into the funnel 21 through the gap of the roller conveyor belt 22. The end of the funnel 21 is connected to the first end compartment 12 of the egg white circulation device 10 through a pipe.

[0045] Temporary storage box 30 is located on the side of egg white circulation device 10 and downstream of egg white collection device 20. The side wall of temporary storage box 30 is connected to the side wall of the middle compartment of egg white circulation device 10 through a pipe and is used to store part of the egg white discharged from egg white collection device.

[0046] The bottom of the cleaning tank 40 is connected to the side wall of the end compartment 14 of the egg white circulation device 10 via a pipe;

[0047] The water pump 50 is installed in the end chamber 14 of the egg white circulation device 10. Its inlet end is connected to the liquid outlet 80 at the bottom of the end chamber 14 through a pipe. The outlet end is divided into a first branch 51 and a second branch 52. The first branch 51 extends to the top of the cleaning tank 40 and uses part of the egg white to clean the stains on the surface of the egg yolk. The second branch 52 is connected to the external conveying pipe.

[0048] Optionally, the egg white circulation device 10 adopts a rectangular box structure, with its interior vertically divided into eight independent filter chambers 11. These three filter chambers 11 are arranged sequentially along the flow direction of the egg white. The top of each filter chamber 11 is open for easy operation and maintenance, while the bottom is completely closed, forming an independent containing space. Optionally, sealing strips are provided between the chambers, located at the joints of each chamber or at the joints between the filter frame 63 and the plug-in structure, to prevent egg white leakage between different filter chambers 11.

[0049] The egg white collection device 20 is located upstream of the first chamber 12 of the egg white circulation device 10. It mainly includes a funnel 21 with a conical bottom and a roller conveyor belt 22 positioned above the funnel 21. The roller conveyor belt 22 consists of multiple parallel rollers with gaps between them for transporting hatched eggs. As the eggs move on the roller conveyor belt 22, the egg white drips through the gaps between the rollers into the funnel 21 below, while the yolk enters the temporary storage box 30, leaving some residual egg white. An inlet pipe is connected to the end of the funnel 21, extending directly to the upper side wall of the first chamber 12 of the egg white circulation device 10, allowing the collected egg white to flow smoothly into the first chamber 12.

[0050] The temporary storage box 30 can be a square or cylindrical container, depending on the actual needs. A pipe interface is provided at the bottom of its side wall. Through a connecting pipe, the side wall of the temporary storage box 30 is connected to the side wall of the middle compartment 13 of the egg white circulation device 10, with the connection point slightly higher than the top of the middle compartment 13, for temporarily storing the egg whites and yolks that have undergone preliminary processing in the first compartment 12.

[0051] The cleaning tank 40 can be a square or round container, depending on the specific needs. It has a pipe interface at its bottom. Through a connecting pipe, the bottom of the cleaning tank 40 is connected to the bottom side wall of the middle compartment 13 of the egg white circulation device 10. This connection allows the cleaning liquid to flow from the cleaning tank 40 into the end compartment 14.

[0052] A small centrifugal pump, 50, is installed and fixed at the bottom of the end chamber 14 of the egg white circulation device 10. The inlet of the pump 50 is connected to the outlet 80 at the bottom of the end chamber 14 via a pipe, used to extract liquid from the end chamber 14. The outlet of the pump 50 is equipped with a tee connector, dividing into a first branch pipe 51 and a second branch pipe 52. The first branch pipe 51 extends upwards, with its end opening located at the top of the washing tank 40, used to pump the egg white liquid into the washing tank 40. The second branch pipe 52 passes through the main body of the device and connects to an external conveying pipe, used to transport the processed egg white to subsequent processes or storage containers.

[0053] In actual use, after the eggs are cracked, they pass through the roller conveyor belt 22, and the egg white drips into the funnel 21. Then, it flows through the inlet pipe into the first chamber 12 of the egg white circulation device 10 for preliminary filtration. After processing in the first chamber 12, the egg white flows into the middle chamber 13, and some of the egg white can flow through the connecting pipe into the temporary storage tank 30 for temporary storage. Finally, the egg white flows into the last chamber 14 and is extracted by the water pump 50. As needed, the water pump 50 can transport the egg white to the outside through the second branch pipe 52, or pump it into the washing tank 40 through the first branch pipe 51 for washing salted duck egg yolks, etc. The washed egg white liquid will flow back to the last chamber 14, forming a cycle.

[0054] The above describes a specific embodiment, but the scope of protection of this utility model is not limited thereto. For example, the number of compartments in the egg white circulation device, the shape and position of the temporary storage box and the washing box can be adjusted according to actual needs.

[0055] Implementation, for example Figure 3 and Figure 4 As shown, preferably, the multiple independent compartments are equipped with a detachable filter structure, the filter structure including:

[0056] A crossbeam 61 is fixed longitudinally to the egg white circulation device 10, and the side of the crossbeam 61 is welded with longitudinally arranged quick-release slots 62.

[0057] The filter frame 63 is detachably connected to the crossbeam 61 via a quick-release slot 62.

[0058] Filter frame 64 is installed on the top of the first end compartment 12;

[0059] The quick-release slot 62 has an embedded elastic retaining spring 65, and the edge of the filter frame 63 has a protrusion 66 that matches the retaining spring 65.

[0060] Preferably, the inner wall of the quick-release slot is provided with a waist-shaped recess, one end of the retaining spring is fixedly installed in the waist-shaped recess, and the other end of the retaining spring is fixedly connected to a limit block. When the filter screen frame is inserted into the quick-release slot, the protrusion on the edge can squeeze the inclined surface to deform the retaining spring.

[0061] Once the protrusion passes the limit block, the retaining spring returns to its elastic state, and the limit block prevents the protrusion from disengaging from the quick-release slot.

[0062] Specifically, a vertical beam 61 is fixed to both sides of the inner wall of each filter chamber 11 (along the direction of egg white flow). The beam 61 can be made of stainless steel, and its cross-sectional shape can be rectangular or circular. On the side of each beam 61, multiple longitudinally arranged quick-release slots 62 are welded along its length. These quick-release slots 62 are also made of stainless steel and are shaped as grooves with a certain depth, in which a spring clip 65 is embedded. The structure of the spring clip 65 allows it to deform when subjected to external force and return to its original shape after the external force is removed, thereby realizing the quick installation and removal of the filter frame 63.

[0063] More specifically, such as Figure 3 As shown, this embodiment has a more preferred embodiment with a quick-connect slot structure. The quick-connect slot is connected to the side of the crossbeam 61 by welding or threading. For example, one quick-connect slot is made of two angle steels with their right-angled sides corresponding to each other. The other right-angled sides of the two angle steels are connected to the side of the crossbeam 61 by welding or threading. The relative distance between the two angle steels is slightly greater than or equal to the width of the edge of the filter frame 63. A retaining spring is installed on the inside of the angle steels, and the protrusion 66 on the side of the filter frame 63 can be adapted to the retaining spring.

[0064] In one specific embodiment of this utility model, each compartment 11 has longitudinally arranged quick-release slots 62 on the crossbeams 61 on both sides of its inner wall. The inner wall of each quick-release slot 62 is not a simple plane, but is machined with a waist-shaped recess. This waist-shaped recess consists of two slightly smaller circular or elliptical recesses at the top and bottom and a narrower straight groove connecting them in the middle, forming a narrow waist shape.

[0065] The retaining ring 65 is made of high-elasticity stainless steel wire, with one end designed as a fixed end that matches the upper or lower circular recess of the waist-shaped countersunk groove. During assembly, this fixed end of the retaining ring 65 is securely installed in the circular recess of the waist-shaped countersunk groove through an interference fit or other fixing method, ensuring that the base of the retaining ring 65 will not loosen or rotate. The other end of the retaining ring 65 is a free end, which is fixedly connected to a limiting block 67 by spot welding or other reliable connection method. This limiting block 67 can be made of stainless steel or hard plastic, and its shape is slightly smaller than the width of the quick-release slot 62, extending towards the opening of the slot. The end of the limiting block 67 is machined into a bevel with a certain angle.

[0066] The edge of the filter frame 63, corresponding to the position of each quick-release slot 62, has an outwardly protruding protrusion 66. The shape and size of this protrusion 66 need to match the quick-release slot 62 and the bevel of the limiting block 67.

[0067] When installing the filter frame 63, the operator simply aligns the protrusion 66 on the edge of the filter frame 63 with the quick-release slot 62 on the crossbeam 61 and applies pressure inward. As the protrusion 66 begins to enter the quick-release slot 62, it first contacts the inclined surface of the limiting block 67. As the insertion depth increases, the protrusion 66 presses upward along the inclined surface against the limiting block 67, forcing the retaining spring 65 connected to the limiting block 67 to elastically deform outward (away from the slot opening). When the protrusion 66 has completely passed the limiting block 67, due to the elastic restoring force of the retaining spring 65, the limiting block 67 will quickly rebound, and its end will lock behind the protrusion 66, effectively preventing the filter frame 63 from coming out of the quick-release slot 62, thus achieving quick fixation of the filter frame 63.

[0068] When the filter frame 63 needs to be disassembled, the operator only needs to apply a little force to pull the filter frame 63 up or down, so that the protrusion 66 presses against the inclined surface of the limiting block 67 again, forcing the retaining spring 65 to deform. When the protrusion 66 can pass the limiting block 67, the filter frame 63 can be taken out from the quick release slot 62.

[0069] This waist-shaped recessed groove, combined with the elastic retaining spring and the limiting block 67, enables the filter frame 63 to be installed quickly and securely and disassembled easily, facilitating daily cleaning and maintenance.

[0070] The filter frame 63 is typically made of woven stainless steel wire, and its shape matches the cross-section of the filter chamber 11. Its edges are provided with protrusions 66 that correspond to the elastic retaining springs 65 within the quick-release slots 62. When installing the filter frame 63, simply align the protrusions 66 on the edge of the filter frame 63 with the quick-release slots 62 and apply a certain amount of pressure; the protrusions 66 will then engage with the retaining springs 65, securing the filter frame 63 firmly to the crossbeam 61. When disassembly is required, simply pull the filter frame 63 upwards or downwards with slight force, and the protrusions 66 will disengage from the retaining springs 65.

[0071] In this embodiment, the filter frame is preferably not limited to a metal filter frame. The first compartment generally uses a metal filter frame, while subsequent compartments may use a cloth filter. The specific mesh size can be adjusted according to actual needs, which will not be explained in detail here.

[0072] Specifically, a filter frame 64 is installed on the top of the first compartment 12 of the egg white circulation device 10. This filter frame 64 is typically made of metal (such as stainless steel) or environmentally friendly plastic, and its size matches the top opening of the first compartment 12, allowing it to be placed directly on the top edge of the compartment 12. The filter frame 64 may contain a metal mesh or grid with a larger aperture for initial interception of larger impurities such as eggshells.

[0073] In this preferred embodiment, the filtration structure 60 can be distributed in layers according to the needs of egg white processing. For example, the filter frame 64 of the first compartment 12 can be configured as a metal filter frame to remove larger impurities. Subsequent compartments 13 and 14 can be equipped with filter screens 63, and the mesh count of these filter screens 63 can gradually increase along the flow direction of the egg white to achieve fine filtration. For example, the filter screen of the first compartment 12 has a smaller mesh count to remove larger suspended matter; the filter screen of the second compartment 13 has a medium mesh count; and the filter screen of the third compartment 14 has a larger mesh count to remove finer impurities, thereby gradually improving the purity of the egg white.

[0074] Preferably, the filter structure 60 is distributed in layers; the filter frame 64 of the first compartment 12 is configured as a metal filter frame, and the mesh number of the filter frames 63 of the subsequent compartments 13 and 14 increases gradually along the direction of egg white flow.

[0075] Through this tiered filtration structure 60, the egg white undergoes coarse filtration, medium-precision filtration, and fine filtration sequentially as it flows through the various filter chambers 11 of the egg white circulation device 10. This effectively removes impurities of different sizes, ultimately yielding relatively pure egg white to meet the needs of subsequent cleaning of salted duck egg yolks. This design not only improves filtration efficiency but also extends the service life of the filter components and reduces the frequency of cleaning and maintenance.

[0076] Preferably, the outlet end of the water pump 50 is provided with a three-way diverter valve 70, the input end of the three-way diverter valve 70 is connected to the water pump 50, the two output ends are respectively connected to the first branch 51 and the second branch 52, and the three-way diverter valve 70 is provided with a manual adjustment knob 71.

[0077] In a preferred embodiment of this invention, a three-way diverter valve 70 is provided at the outlet of the water pump 50 to allow for more flexible control of the egg white flow. This three-way diverter valve 70 can be a manual ball valve or a butterfly valve, and the valve body is made of food-grade stainless steel to ensure hygiene and safety.

[0078] The inlet of the three-way diverter valve 70 is directly connected to the outlet port of the water pump 50 via a suitable connector (e.g., threaded connector or flange). After the water pump 50 draws liquid from the end compartment 14, it first enters this three-way diverter valve 70. The three-way diverter valve 70 has two outlets. One outlet is connected to the inlet at the top of the washing tank 40 via a first branch pipe 51, which is used to pump egg whites into the washing tank 40 to wash the salted duck egg yolks. The other outlet is connected to an external delivery pipe via a second branch pipe 52, which is used to transport the processed egg whites to subsequent processing stages or storage containers.

[0079] A clearly visible manual adjustment knob 71 is located on the valve body of the three-way diverter valve 70. By rotating this knob, the operator can manually adjust the position of the valve core, thereby changing the ratio of liquid flowing through the two output ports. For example, the knob can be rotated fully to a certain position so that all the egg white flows to the washing tank 40; or rotated to another position so that all the egg white flows to the external delivery pipe; or the knob can be adjusted to the middle position so that some of the egg white flows to the washing tank 40 and the other part flows to the external delivery pipe, thus achieving flow distribution. This manual adjustment knob design allows the operator to easily control the flow direction of the egg white according to actual production needs.

[0080] Preferably, the bottom of the end chamber 14 is provided with a liquid outlet 80, and an anti-clogging filter cover 81 is provided at the liquid outlet 80. The pore size of the anti-clogging filter cover 81 is smaller than the mesh size of the filter screen 63 inside the end chamber 14.

[0081] To prevent impurities from clogging the outlet 80 at the bottom of the end compartment 14, an anti-clogging filter cover 81 is provided at the outlet 80.

[0082] Specifically, a circular outlet 80 is provided at the bottom center or near the bottom of the end chamber 14. The diameter of the outlet 80 can be determined according to the size of the inlet pipe of the water pump 50, which will not be elaborated here. The edge of the outlet 80 can be fixed to the bottom of the end chamber 14 by welding or threaded connection.

[0083] Above the outlet 80, a bowl-shaped or hemispherical anti-clogging filter cover 81 is installed. This filter cover 81 can be made of stainless steel, and its sidewalls and top are covered with evenly distributed circular or square small holes. The diameter of these holes is larger than the inner diameter of the inlet pipe of the water pump 50, but smaller than the mesh size of the filter screen 63 used inside the end chamber 14. For example, if the filter screen 63 in the end chamber 14 is 150 mesh, its corresponding pore size is about 0.1 mm, then the pore size on the anti-clogging filter cover 81 can be set to 0.2 mm to 0.5 mm. This ensures that the egg white that has passed through the fine filter screen 63 can pass through smoothly, while larger particles are intercepted outside the filter cover 81, preventing them from entering the water pump 50 and causing blockage or damage.

[0084] The anti-clogging filter cover 81 can be fixed to the outlet 80 by means of clips, threads, or welding to ensure that it will not loosen during use. Preferably, a detachable connection method can be adopted to facilitate the periodic cleaning of impurities trapped on the filter cover 81. For example, raised locking positions can be provided around the outlet 80, and corresponding locking grooves can be provided on the bottom edge of the filter cover 81, so that the filter cover 81 can be fixed by rotating or pressing. By setting this anti-clogging filter cover 81, the water pump 50 can be effectively protected, its service life can be extended, and the stable operation of the egg white recycling device 1 can be guaranteed.

[0085] Preferably, a liquid level sensor is installed inside the cleaning tank 40, and a pressure sensor is installed on the external delivery pipeline. The liquid level sensor and the pressure sensor are electrically connected to the controller of the water pump 50.

[0086] The start and stop of the water pump 50 are jointly controlled by the liquid level sensor in the cleaning tank 40 and the pressure sensor in the external delivery pipeline. When the liquid level is lower than the threshold or the pressure exceeds the set value, the water pump 50 will start and stop automatically.

[0087] To automate the egg white recycling process, a level sensor is installed inside the washing tank 40, and a pressure sensor is installed on the external delivery pipeline. Both sensors are electrically connected to the controller of the water pump 50 to jointly control the start and stop of the water pump 50.

[0088] Specifically, the liquid level sensor can be a float-type liquid level sensor or an ultrasonic liquid level sensor, installed on the side wall of the washing tank 40, to monitor the egg white liquid level height inside the washing tank 40 in real time. Depending on the actual application requirements, a lower liquid level threshold can be set, for example (when the egg white liquid level inside the washing tank 40 is lower than 20% of the tank height), the liquid level sensor will send a low liquid level signal to the controller.

[0089] A piezoresistive pressure sensor can be selected and installed at a suitable location on the external delivery pipeline via a threaded connection, such as near the outlet of water pump 50. This pressure sensor is used to monitor the liquid pressure within the external delivery pipeline in real time. Similarly, a pressure upper limit threshold can be set according to actual needs, for example (when the pressure inside the pipeline exceeds 0.5 MPa), at which point the pressure sensor will send a high-pressure signal to the controller.

[0090] The controller for water pump 50 can be a microcontroller-based control unit with a pre-programmed control program. The level sensor and pressure sensor are connected to the controller's input via signal lines. The controller receives signals from these two sensors in real time and controls the start and stop of water pump 50 according to the preset logic.

[0091] The control logic is as follows: When the egg white level in the washing tank 40 is higher than the set lower threshold and the pressure in the external delivery pipeline is lower than the set upper threshold, the controller will control the water pump 50 to start, drawing the egg white from the end compartment 14 and delivering it to the washing tank 40 or the outside. Once the egg white level in the washing tank 40 falls below the set lower threshold, or the pressure in the external delivery pipeline exceeds the set upper threshold, the controller will immediately issue a command to stop the operation of the water pump 50 to prevent equipment damage or other problems that may be caused by insufficient liquid in the washing tank 40 or excessive pressure in the external pipeline.

[0092] In this way, by using level and pressure sensors to automatically control the water pump 50, it is possible to effectively ensure that there is enough egg white in the cleaning tank 40 for cleaning salted duck egg yolks, while also preventing excessive pressure in the external conveying pipeline, thus improving the intelligence level and safety performance of the entire egg white recycling device 1.

[0093] Preferably, it also includes a connecting channel 100, which includes: a first connecting channel 101, the inlet end of which is connected to the end of the roller conveyor belt 22, and the outlet end which extends to the top of the temporary storage box 30; and a second connecting channel 102, the inlet end of which is connected to the cleaning box 40, and the outlet end which extends to the side wall of the temporary storage box 30.

[0094] The first connecting channel 101 is designed to collect egg white dripping from the end of the roller conveyor belt 22 or a small amount of egg white remaining on the surface of the salted duck egg yolk and guide it into the temporary storage box 30. The egg white collected from the end of the roller conveyor belt 22 can flow directly into the temporary storage box 30 through the first connecting channel 101, avoiding waste and increasing the source of egg white in the temporary storage box 30.

[0095] The second connecting channel 102 is used to guide the liquid (i.e., the egg white used to clean the salted duck egg yolks) in the cleaning tank 40 back to the temporary storage tank 30 for possible subsequent reuse or processing. This second connecting channel 102 is made of food-grade stainless steel or plastic pipe, and its inlet end is connected to the bottom of the cleaning tank 40 via a pipe interface. The pipe extends upwards from the bottom of the cleaning tank 40, then bends and connects to the side wall of the temporary storage tank 30. The height of the connection point can be slightly higher than the opening of the first connecting channel 101 at the top of the temporary storage tank 30 to prevent backflow of liquid. Through this second connecting channel 102, the egg white that still has some usability after cleaning the salted duck egg yolks can be recycled back to the temporary storage tank 30, for example, it can be mixed with newly collected egg white and then re-enter the egg white circulation device 10 for filtration, thereby maximizing the recycling rate of the egg white.

[0096] The setup of these two connection channels makes the entire egg white recycling process more complete. It can not only effectively collect and process egg whites, but also recycle used egg whites, further improving the economic efficiency and environmental friendliness of the device.

[0097] Preferably, the egg white collection device 20 further includes a guide channel 110, which is disposed below the roller conveyor belt 22 and whose end is aligned with the top opening of the funnel 21 for guiding the egg white into the funnel 21.

[0098] In order to more effectively collect the egg white dripping from the roller conveyor belt 22 into the funnel 21, the egg white collection device 20 also includes a guide channel 110.

[0099] Specifically, the guide channel 110 is located below the roller conveyor belt 22 and extends along the length of the roller conveyor belt 22. The guide channel 110 can be made of food-grade stainless steel or food-grade plastic, and its cross-sectional shape can be designed as U-shaped or V-shaped to better collect the dripping egg white. The length of the guide channel 110 should be slightly less than or equal to the effective width of the roller conveyor belt 22 to ensure that most of the dripping egg white can be collected.

[0100] The guide channel 110 is inclined at a certain angle, with its higher front end located below the starting end of the roller conveyor belt 22 and its lower end aligned with the top opening of the funnel 21 below. This inclined angle design utilizes gravity to allow the egg white dripping into the guide channel 110 to flow down the bottom of the channel to the funnel 21.

[0101] The guide channel 110 is securely installed below the roller conveyor belt 22 by a bracket or other fasteners, maintaining a certain gap to avoid friction with the roller conveyor belt 22. The end of the guide channel 110 is located directly above the funnel 21, and the shape and size of its outlet match the top opening of the funnel 21, ensuring that the egg white can flow accurately into the funnel 21, thereby effectively reducing the loss of egg white during the collection process and improving the collection efficiency of egg white.

[0102] In one specific embodiment of this utility model, in order to ensure the hygiene and safety of egg whites during the recycling process, the materials selected for each component in direct contact with the egg whites are as follows:

[0103] The casing, partitions, and internal beams of the egg white circulation device are all made of food-grade 304 stainless steel. This stainless steel has excellent corrosion resistance and is easy to clean, effectively preventing bacterial growth and ensuring the quality of the egg whites.

[0104] The funnel part of the egg white collection device is made of food-grade 304 stainless steel by stamping, with a smooth surface and no dead corners, making it easy to clean. The rollers of the roller conveyor belt can be made of food-grade 304 stainless steel tubing or food-grade polymer plastics (such as polypropylene (PP) or polyethylene (PE). These materials are non-toxic and odorless, and meet food hygiene standards. The frame of the roller conveyor belt is also welded from food-grade 304 stainless steel to ensure the stability of the overall structure.

[0105] The storage box is made of food-grade 304 stainless steel sheet, or it can be injection molded from food-grade polypropylene (PP). The interior surface of the box is polished for easy cleaning and disinfection.

[0106] The cleaning chamber is also made of food-grade 304 stainless steel sheet welded together or food-grade polypropylene (PP) injection molded. The interior of the cleaning chamber is also smoothed to facilitate the cleaning of residues.

[0107] All piping connecting the various components, such as the inlet pipe, main pipe, first branch pipe, second branch pipe, and pipe connecting the temporary storage tank and the cleaning tank, is made of food-grade stainless steel or food-grade plastic tubing (such as silicone tubing or polyethylene tubing). Connectors between pipes are also made of appropriate food-grade materials, such as stainless steel compression fittings or food-grade plastic quick couplings, to ensure a tight and hygienic connection.

[0108] In detachable filter structures, the filter frame can be injection molded from food-grade 304 stainless steel or food-grade ABS plastic. The filter mesh frame is typically woven from food-grade 304 stainless steel wire, meeting the requirements for food contact materials. The elastic retaining spring is also made of food-grade stainless steel to ensure its elasticity and durability.

[0109] In summary, this invention provides a compact and fully functional egg white recycling device. The device efficiently collects egg white produced after shelling via an egg white collection unit, and utilizes the multi-compartment structure within the egg white recycling unit to achieve step-by-step filtration and purification of the egg white. The device also includes a temporary storage tank for storing egg white, and a washing tank that uses the collected egg white to wash salted duck egg yolks, achieving effective reuse of the egg white. Through the circulation action of a water pump and an optional three-way diverter valve, the flow direction of the egg white can be flexibly controlled to meet different process requirements. Furthermore, optional detachable filter structures, anti-clogging filter covers, and an automated control system further enhance the practicality and reliability of the device. This invention aims to improve the utilization rate of egg white during egg processing, reduce waste, and provide an economical and environmentally friendly solution for washing salted duck egg yolks.

[0110] The working principle of the egg white recycling device described in this utility model is as follows:

[0111] First, the broken duck eggs to be processed are conveyed to the top of the egg white collection device via a roller conveyor belt. During the conveying process, the egg white will drip naturally due to the gap between the rollers and be collected by the guide channel (preferably) located below the roller conveyor belt. Then, it is guided through the guide channel to the top opening of the funnel and finally flows into the bottom of the funnel.

[0112] Next, the egg white collected in the funnel flows into the first chamber of the egg white circulation device through an inlet pipe connected to the end of the funnel. At the top of the first chamber, a filter frame is installed to initially intercept larger impurities, such as eggshell fragments.

[0113] After initial filtration, the egg white flows sequentially through multiple independent compartments within the egg white circulation device, following a pre-defined flow path. Each compartment is sealed at the bottom, allowing the egg white to overflow from the filter frame of one compartment to the top of the next, achieving a step-by-step flow. Each compartment contains a removable filter structure and filter frame. Preferably, the filter frames near the first compartment have a smaller mesh size to remove larger suspended solids, while the mesh size gradually increases in subsequent compartments, achieving finer filtration and progressively improving the purity of the egg white. Optional sealing strips between compartments prevent unnecessary leakage. As the egg white flows through intermediate compartments, a portion can be temporarily stored in a temporary storage tank via connecting pipes for later use or to adjust the processing speed.

[0114] Finally, the egg whites, after undergoing multiple filtration stages, will collect in the final compartment of the egg white circulation device. A water pump installed at the outlet at the bottom of this compartment draws the egg whites from the final compartment through pipes.

[0115] The water pump outlet has two branches. The first branch extends to the top of the washing tank. When salted duck egg yolks need to be washed, the pump is started to pump the relatively pure egg white collected in the end compartment into the washing tank for washing the yolks. The washed egg white liquid flows back to the middle or end compartment of the egg white circulation device through a pipe connected to the bottom of the washing tank, forming a recycling system. The second branch of the water pump connects to an external conveying pipe, which can transport the processed egg white to subsequent processing steps or storage containers. An anti-clogging filter is installed at the liquid outlet at the bottom of the end compartment to prevent larger residues from entering the water pump, protecting the pump and ensuring stable system operation. The liquid level sensor inside the washing tank and the pressure sensor on the external conveying pipe can be electrically connected to the water pump controller to realize automatic start and stop of the water pump. For example, the water pump will automatically stop when the egg white liquid level in the washing tank is too low or the pressure in the external pipe is too high. The egg white collection device is equipped with a guide channel to more effectively guide the egg white dripping from the roller conveyor belt into the funnel. The first connecting channel can directly guide any egg white that may drip from the end of the roller conveyor belt into the temporary storage box.

[0116] Through the above series of steps, this utility model achieves efficient collection, multi-stage filtration and purification, flexible temporary storage and recycling of egg whites generated during egg processing. It is especially suitable for application scenarios such as cleaning salted duck egg yolks, thereby improving resource utilization and reducing production costs.

[0117] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An egg white recycling device, characterized in that, include: An egg white circulation device, wherein the egg white circulation device has multiple independent filter chambers arranged inside along the direction of egg white flow, each chamber having an open top and a closed bottom; An egg white collection device includes a bottom funnel and a roller conveyor belt disposed above the funnel. Egg white flows into the funnel through the gaps in the roller conveyor belt. The end of the funnel is connected to the first chamber of an egg white circulation device through a pipe. A temporary storage box is provided on the side of the egg white circulation device and downstream of the egg white collection device. The side wall of the temporary storage box is connected to the side wall of the middle compartment of the egg white circulation device through a pipe, and is used to store a portion of the egg white discharged from the egg white collection device. A cleaning tank, the bottom of which is connected to the side wall of the middle compartment of the egg white circulation device via a pipe; A water pump is installed in the end chamber of the egg white circulation device. Its inlet end is connected to the bottom of the end chamber through a pipe, and its outlet end is divided into a first branch and a second branch. The first branch extends to the top of the cleaning tank and uses part of the egg white to clean the stains on the surface of the egg yolk. The second branch is connected to an external conveying pipe.

2. The egg white recycling device according to claim 1, characterized in that, The filter chamber is equipped with a detachable filter structure, which includes: A crossbeam is fixed longitudinally within the egg white circulation device, and the side of the crossbeam is welded with longitudinally arranged quick-release slots. A filter frame, wherein the filter frame is detachably connected to the crossbeam via a quick-release slot; A filter frame, which is installed on the top of the first end compartment; The quick-release slot has an embedded elastic retaining spring, and the edge of the filter frame has a protrusion that matches the retaining spring.

3. The egg white recycling device according to claim 2, characterized in that, The quick-release slot has a waist-shaped recessed groove on its inner side wall. One end of the retaining spring is fixedly installed in the waist-shaped recessed groove, and the other end of the retaining spring is fixedly connected to a limiting block. When the filter frame is inserted into the quick-release slot, the protrusion on the edge of the filter frame can squeeze the inclined surface of the limiting block to deform the retaining spring. Once the protrusion passes the limiting block, the retaining spring returns to its elastic state, and the limiting block prevents the protrusion from dislodging from the quick-release slot.

4. The egg white recycling device according to claim 2, characterized in that, The filtration structure is distributed in a hierarchical manner; The filter frame of the first chamber is configured as a metal filter frame, and the mesh size of the filter frames in subsequent chambers increases progressively along the direction of egg white flow.

5. The egg white recycling device according to claim 1, characterized in that, The water pump is equipped with a three-way diverter valve at its outlet. The input end of the three-way diverter valve is connected to the water pump, and the two output ends are respectively connected to the first branch and the second branch. The three-way diverter valve is equipped with a manual adjustment knob.

6. The egg white recycling device according to claim 1, characterized in that, The bottom of the end chamber is provided with a liquid outlet, and an anti-clogging filter cover is provided at the liquid outlet. The pore size of the anti-clogging filter cover is smaller than the mesh size of the filter screen frame inside the end chamber.

7. The egg white recycling device according to claim 1, characterized in that, The cleaning tank is equipped with a liquid level sensor, and the external delivery pipe is equipped with a pressure sensor. The liquid level sensor and the pressure sensor are electrically connected to the water pump controller. The water pump is controlled by a liquid level sensor inside the cleaning tank and a pressure sensor in the external delivery pipeline. When the liquid level is lower than the threshold value and exceeds the set value, the water pump will automatically start and stop.

8. The egg white recycling device according to claim 1, characterized in that, It also includes a connection channel, which includes: The first connecting channel has its inlet end connected to the end of the roller conveyor belt and its outlet end extending to the top of the temporary storage box. The second connecting channel has its inlet end connected to the cleaning tank and its outlet end extended to the side wall of the temporary storage tank.

9. The egg white recycling device according to claim 1, characterized in that, The egg white collection device also includes a guide channel, which is located below the roller conveyor belt and its end is aligned with the top opening of the funnel to guide the egg white into the funnel.

10. An egg white recycling device according to any one of claims 1-9, characterized in that, At least some of the parts of the egg white circulation device, egg white collection device, temporary storage box, and washing box that come into contact with the egg white are made of food-grade stainless steel or food-grade plastic.

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