Low-salt salted duck egg making device and making method

Abstract

The application discloses a low-salt salted duck egg making device and a making method. The low-salt salted duck egg making device is equipped with a tubular pickling structure and a pressurizing system. The application utilizes the buoyancy characteristics to adjust low-concentration brine, so that the duck eggs can automatically and slowly sink to the bottom. After sinking to the bottom, the pressurizing system is used for pressurizing. In the pressurizing process, the brine is pressed into the pickling pipeline and the elastic potential energy is absorbed by the elastic member. The process is controlled by a one-way valve. When the pressure is balanced, the one-way valve is closed. Under the action of the elastic potential energy absorbed by the elastic member, the pressure is increased. The increase of the pressure can accelerate the penetration speed and improve the pickling efficiency.

Description

Technical Field

[0001] This invention relates to the field of salted duck egg production, and more particularly to an apparatus and method for producing low-salt salted duck eggs. Background Technology

[0002] Salted duck eggs are made by pickling duck eggs with salt. They are rich in high-quality protein, vitamin A, and minerals such as calcium, iron, and zinc, and can help stimulate appetite and supplement nutrition.

[0003] Currently, factories generally use two methods to pickle salted duck eggs. One is the soaking method, as described in patent application number CN200810047046.3, which involves "placing the eggs in a container, pouring in the soaking liquid, sealing and pickling for 25 to 30 days." The other is the coating method, as described in patent application number CN201410219739.1, which involves "selecting fresh, crack-free duck eggs, washing and drying them, placing the prepared duck eggs in an earthenware jar, sealing the jar opening with cotton paper, and leaving it for 20 to 60 days to produce the product."

[0004] As described in the aforementioned patent, both methods require a relatively long pickling time, and the only way to improve pickling efficiency is generally by increasing the salinity. However, this method is not suitable for producing low-salt salted duck eggs. Summary of the Invention

[0005] In view of the shortcomings of existing technologies, such as excessive pickling time and low efficiency, this invention provides a device and method for making low-salt salted duck eggs.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: Low-salt salted duck egg making apparatus, including: The brine mixing tank contains brine for pickling duck eggs; The brine recovery tank is connected to the brine mixing tank via a recovery pipe and a pump to recover the brine. The pickling pipeline includes a main pickling pipeline, an inlet branch pipe located at the inlet end of the main pickling pipeline, and an outlet branch pipe located at the outlet end of the main pickling pipeline. The main pickling pipeline includes a vertical section, a connector, and an inclined section. The vertical section and the inclined section are connected by the connector, and the inlet branch pipe is connected to the vertical section. The ends of the vertical section and the inclined section are respectively provided with pneumatic plugs for sealing the inlet branch pipe and the outlet branch pipe and sealing the main pickling pipeline. The outlet branch pipe is connected to the brine recovery tank. The brine addition pipeline is equipped with an electrically controlled valve, and its two ends are respectively connected to the brine mixing tank and the vertical section of the pickling main pipeline; The pressurization system includes a replenishment tank, a T-shaped cylinder located at the connector, and a balance branch pipe located at the inclined section. The vertical port of the T-shaped cylinder is connected to the replenishment tank and is equipped with a first one-way valve. The horizontal port on the right side of the T-shaped cylinder is connected to the connector and to the main pickling pipeline. A second one-way valve is located in the horizontal port on the right side of the T-shaped cylinder. A piston driven by a drive device is located in the horizontal port on the left side of the T-shaped cylinder. The valve core of the first one-way valve opens when it moves downward, and the valve core of the second one-way valve opens when it moves to the right. The balance branch pipe is equipped with a piston head and an elastic element that applies a rebound force to the piston head.

[0007] Preferably, the inner wall of the balance branch pipe is provided with a limiting step to limit the piston head.

[0008] Preferably, the elastic element is a spring, and a pressure member is threadedly connected to the top of the balance branch pipe. The top and bottom of the spring abut against the pressure member and the piston head, respectively. The pressure of the spring is adjusted when the pressure member is rotated.

[0009] Preferably, the elastic element is gas sealed in the balance branch pipe, and the balance branch pipe is provided with an air inlet pipe and an air outlet pipe on both sides for balancing the depressurization and pressurization inside the branch pipe.

[0010] Preferably, both the vertical and inclined sections of the main pickling pipe are located on smoothly transitioned protrusions. When the pneumatic plug is in a sealing sliding fit with the main pickling pipe and its end abuts against the protrusion, the main pickling pipe is sealed.

[0011] Preferably, the brine recovery tank is equipped with a pull-out collection box, the bottom of which is a screen. The side of the brine recovery tank is provided with stepped holes for the pull-out collection box to fit against and form a seal. The recovery pipeline includes a first recovery branch pipe, a second recovery branch pipe, and a main recovery pipeline. The first and second recovery branch pipes are located on the upper and lower sides of the screen, respectively, and each of the first and second recovery branch pipes is equipped with an electrically controlled valve. The first and second recovery branch pipes are connected to the main recovery pipeline, and a pump is installed on the main recovery pipeline.

[0012] Preferably, the system also includes a duck egg feeding structure, which includes a guide seat located at the end of the feed branch pipe and several spaced guide rods located on the left side of the guide seat and inclined. The guide seat has a guide hole communicating with the inlet of the feed branch pipe and has a guide groove with a soft inner wall.

[0013] As a preferred option, a reflux pipe is also included, with one end connected to the feed branch pipe and the other end connected to the brine recovery tank.

[0014] Preferably, the system also includes a replenishment pipe, one end of which is connected to the brine mixing tank and the other end is connected to the vertical section of the main pickling pipe, and the replenishment pipe is equipped with an electrically controlled valve.

[0015] The method for making low-salt salted duck eggs, using the aforementioned low-salt salted duck egg making apparatus, includes the following steps: S1. Prepare brine. Prepare brine with a concentration of 10%-11% in the brine mixing tank to ensure that the density of the duck eggs is greater than that of the brine and they sink. S2, add brine, close the pneumatic plug at the inclined section of the pickling main pipe and add the brine prepared in S1 into the pickling main pipe, so that the feed branch pipe and the brine recovery tank are filled with brine; S3, Add duck eggs, open the plug at the vertical section of the main pickling pipe, and add duck eggs to the vertical section of the main pickling pipe. The duck eggs sink to the bottom of the inclined pipe under their own gravity. During the sinking process, the brine in the feed branch pipe buffers the duck eggs. S4, pressurized storage: pressurization is achieved through a pressurization system. First, external force is applied to the replenishment tank to open the first one-way valve and inject brine into the T-shaped cylinder. Then, the piston is driven to the right by the drive device to close the first one-way valve and open the second one-way valve. The brine in the T-shaped cylinder is forced into the pickling main pipe. At this time, the elastic element in the balance branch pipe is compressed, storing elastic potential energy. The piston head and piston work together to increase the pressure of the brine in the pickling main pipe. After the pressure is balanced, the second one-way valve closes. At this time, the piston retracts, and the first one-way valve opens during the retraction. The replenishment tank replenishes brine into the T-shaped cylinder. The elastic element applies pressure to the brine in the pickling main pipe and maintains this state for pickling. S5, brine and duck egg recycling, is carried out using the aforementioned low-salt salted duck egg making device. First, open the two pneumatic plugs to allow the duck eggs in the brine to enter the brine recycling tank. When the duck eggs enter, the brine level is above the screen to act as a buffer. The first recycling branch pipe first draws in the brine to ensure that all duck eggs have a safe buffer level when they fall in. After all the duck eggs have fallen into the brine recycling tank, the second recycling branch pipe draws in the brine to make the brine level in the brine recycling tank lower than the screen and the lowest point of the opening on the side wall of the brine recycling tank at the pull-out collection box. Then, the pull-out collection box is pulled out and the pickled duck eggs are taken out. In step S4, the pressure applied to the brine under the same conditions is adjusted by the aforementioned elastic element.

[0016] Compared with the prior art, the advantages of this invention are as follows: This application utilizes the buoyancy characteristics to prepare low-concentration brine, allowing duck eggs to automatically and slowly sink to the bottom. After sinking, the brine is pressurized by a pressurization system. During the pressurization process, the brine is forced into the pickling pipe and absorbs elastic potential energy through an elastic element. This process is controlled by a one-way valve. When the pressure is balanced, the one-way valve closes, and the pressure increases due to the absorption of elastic potential energy by the elastic element. The increased pressure accelerates the penetration speed and improves the pickling efficiency. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 and Figure 2 This is a perspective view of Example 1; Figure 3 This is a side view of Example 1; Figure 4 This is a cross-sectional view of Example 1; Figure 5 This is a cross-sectional view of Example 1; In the diagram: 10. Brine mixing tank; 20. Brine recovery tank; 30. Replenishment tank; 40. Pickling pipe; 401. Main pickling pipe; 4011. Vertical section; 4012. Inclined section; 402. Feed branch pipe; 403. Balance branch pipe; 4031. Piston; 4032. Spring; 4033. Pressing component; 404. Connecting component; 4041. Elbow; 4042. Wrapping seat; 405. Discharge branch pipe; 50. Second check valve; 60. First check valve; 70. T-shaped cylinder; 701. Piston; 702. Drive device; 80. Return pipe; 90. Pump; 01. Pneumatic plug; 02. Main recovery pipe; 03. First recovery branch pipe; 04. Second recovery branch pipe; 05. Pull-out collection box; 051. Screen; 06. Guide seat; 07. Guide rod. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example

[0021] This embodiment mainly describes the title of the low-salt salted duck egg making device, as follows: Low-salt salted duck egg making equipment, such as Figure 1-5 As shown, it includes: The brine mixing tank 10 is used to store brine for pickling duck eggs; The brine recovery tank 20 is connected to the brine mixing tank 10 via a recovery pipe and a pump 90 to recover brine. The pickling pipe 40 includes a main pickling pipe 401, an inlet branch pipe 402 located at the inlet end of the main pickling pipe 401, and an outlet branch pipe 405 located at the outlet end of the main pipe. The main pickling pipe 401 includes a vertical section 4011, a connector 404, and an inclined section 4012. The vertical section 4011 and the inclined section 4012 are connected by the connector 404, and the inlet branch pipe 402 is connected to the vertical section 4011. The ends of the vertical section 4011 and the inclined section 4012 are respectively provided with pneumatic plugs 01 for sealing the inlet branch pipe 402 and the outlet branch pipe 405 and sealing the main pickling pipe 401. The outlet branch pipe 405 is connected to the brine recovery tank 20. A brine addition pipe is provided with an electrically controlled valve, and its two ends are respectively connected to the brine mixing tank 10 and the vertical section 4011 of the pickling main pipe 401; The pressurization system includes a replenishment tank 30, a T-shaped cylinder 70 located at a connector 404, and a balance branch pipe 403 located at an inclined section 4012. The vertical port of the T-shaped cylinder 70 is connected to the replenishment tank 30 and is equipped with a first one-way valve 60. The horizontal port on the right side of the T-shaped cylinder 70 is connected to the connector 404 and to the main pickling pipe 401. A second one-way valve 50 is located in the horizontal port on the right side of the T-shaped cylinder 70. A piston 701 driven by a drive device 702 is located in the horizontal port on the left side of the T-shaped cylinder 70. The valve core of the first one-way valve 60 opens when it moves downward, and the valve core of the second one-way valve 50 opens when it moves to the right. The balance branch pipe 403 is equipped with a piston head 4031 and an elastic element that applies a rebound force to the piston head 4031. The specific pressurization process in this solution is described in Example 2.

[0022] Preferably, the inner wall of the balance branch pipe 403 is provided with a limiting step to limit the piston head 4031. The limiting step is used to limit the piston head 4031 and prevent it from falling into the pickling main pipe 401.

[0023] Preferably, the elastic element is a spring 4032, and the top of the balance branch pipe 403 is threadedly connected to a pressing element 4033. The top and bottom of the spring 4032 abut against the pressing element 4033 and the piston head 4031, respectively. When the pressing element 4033 is rotated, the pressure of the spring 4032 is adjusted.

[0024] Preferably, the elastic element is gas sealed within the balance branch pipe 403. The balance branch pipe 403 has inlet and outlet pipes on both sides for depressurization and pressurization within it. These are two structures for adjusting the elastic element; pressure can be adjusted as needed.

[0025] Preferably, both the vertical section 4011 and the inclined section 4012 of the main pickling pipe 401 are located on smoothly transitioned protrusions. When the pneumatic plug 01 is in a sealing sliding fit with the main pickling pipe 401 and its end abuts against the protrusion, it seals the main pickling pipe 401. The protrusion is used to completely seal the main pickling pipe 401 to prevent air leakage.

[0026] Preferably, the brine recovery tank 20 is equipped with a pull-out collection box 05. The bottom of the pull-out collection box 05 is a screen 051. The side of the brine recovery tank 20 is provided with stepped holes to allow the pull-out collection box 05 to fit against and form a seal. The recovery pipeline includes a first recovery branch pipe 03, a second recovery branch pipe 04, and a main recovery pipeline 02. The first recovery branch pipe 03 and the second recovery branch pipe 04 are located on the upper and lower sides of the screen 051, respectively, and each of the first recovery branch pipe 03 and the second recovery branch pipe 04 is equipped with an electrically controlled valve. The first recovery branch pipe 03 and the second recovery branch pipe 04 are connected to the main recovery pipeline 02, and the pump 90 is installed on the main recovery pipeline 02. The specific working process of this scheme is shown in Example 2. Its function is to provide a buffer for the duck eggs while recovering the brine, and after the duck eggs have completely fallen in, to discharge some brine so that the pull-out collection box 05 can be pulled out without causing brine leakage.

[0027] Preferably, a duck egg feeding structure is also included. This structure comprises a guide seat 06 located at the end of the feed branch pipe 402 and several spaced, inclined guide rods 07 located on the left side of the guide seat 06. The guide seat 06 has a guide hole communicating with the inlet of the feed branch pipe 402 and a guide groove with a soft inner wall. The guide groove separates duck eggs at different points on the guide rods 07 to prevent collisions or the guide rods 07 extending directly into the feed branch pipe 402. This design guides duck eggs into the feed branch pipe 402 while simultaneously buffering and diverting them to prevent collisions or breakage from impacts with the guide seat 06.

[0028] Preferably, a return pipe 80 is also included, one end of which is connected to the feed branch pipe 402, and the other end is connected to the brine recovery tank 20. The return pipe 80 is used to allow brine to overflow from the feed branch pipe 402 when the main pickling pipe 401 is closed.

[0029] Preferably, a replenishment pipe is also included, one end of which is connected to the brine mixing tank 10, and the other end is connected to the vertical section 4011 of the main pickling pipe 401. The replenishment pipe is equipped with an electrically controlled valve. The replenishment pipe is used to inject brine into the main pickling pipe 401. In addition, a separate set of pipes can be provided to connect the brine mixing tank 10 and the replenishment tank 30 and control them through an electrically controlled valve.

[0030] Additionally, it should be noted that the brine mixing tank 10, brine recovery tank 20, and replenishment tank 30 are shared, while multiple pickling pipes 40 are arranged side by side. The replenishment tank 30 may be equipped with a pressurizing device and a sealable filling port. The pressurizing device is used to inject brine into the T-shaped cylinder 70 during the first use, while the filling port can be used to replenish some salt. Finally, the connector 404 includes an internal elbow 4041 and a sealing seat 4042 that seals and wraps the outer circle of the elbow 4041. The sealing seat 4042 and the elbow 4041 are provided with holes for the brine to pass through in the T-shaped cylinder 70. Example

[0031] This embodiment mainly describes the title of the method for making low-salt salted duck eggs, as follows: The method for making low-salt salted duck eggs, using the aforementioned low-salt salted duck egg making apparatus, includes the following steps: S1. Prepare brine. Prepare brine with a concentration of 10%-11% in the brine mixing tank to ensure that the density of the duck eggs is greater than that of the brine and they sink. S2, add brine, close the pneumatic plug at the inclined section of the pickling main pipe and add the brine prepared in S1 into the pickling main pipe, so that the feed branch pipe and the brine recovery tank are filled with brine; S3, Add duck eggs, open the plug at the vertical section of the main pickling pipe, and add duck eggs to the vertical section of the main pickling pipe. The duck eggs sink to the bottom of the inclined pipe under their own gravity. During the sinking process, the brine in the feed branch pipe buffers the duck eggs. S4, pressurized storage: pressurization is achieved through a pressurization system. First, external force is applied to the replenishment tank to open the first one-way valve and inject brine into the T-shaped cylinder. Then, the piston is driven to the right by the drive device to close the first one-way valve and open the second one-way valve. The brine in the T-shaped cylinder is forced into the pickling main pipe. At this time, the elastic element in the balance branch pipe is compressed, storing elastic potential energy. The piston head and piston work together to increase the pressure of the brine in the pickling main pipe. After the pressure is balanced, the second one-way valve closes. At this time, the piston retracts, and the first one-way valve opens during the retraction. The replenishment tank replenishes brine into the T-shaped cylinder. The elastic element applies pressure to the brine in the pickling main pipe and maintains this state for pickling. S5, brine and duck egg recycling, is carried out using the aforementioned low-salt salted duck egg making device. First, open the two pneumatic plugs to allow the duck eggs in the brine to enter the brine recycling tank. When the duck eggs enter, the brine level is above the screen to act as a buffer. The first recycling branch pipe first draws in the brine to ensure that all duck eggs have a safe buffer level when they fall in. After all the duck eggs have fallen into the brine recycling tank, the second recycling branch pipe draws in the brine to make the brine level in the brine recycling tank lower than the screen and the lowest point of the opening on the side wall of the brine recycling tank at the pull-out collection box. Then, the pull-out collection box is pulled out and the pickled duck eggs are taken out. In step S4, the pressure applied to the brine under the same conditions is adjusted by the aforementioned elastic element.

[0032] The above provides a detailed description of the low-salt salted duck egg making apparatus and method provided by the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The above description of the embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A device for making low-salt salted duck eggs, characterized in that, include: The brine mixing tank contains brine for pickling duck eggs; The brine recovery tank is connected to the brine mixing tank via a recovery pipe and a pump to recover the brine. The pickling pipeline includes a main pickling pipeline, an inlet branch pipe located at the inlet end of the main pickling pipeline, and an outlet branch pipe located at the outlet end of the main pickling pipeline. The main pickling pipeline includes a vertical section, a connector, and an inclined section. The vertical section and the inclined section are connected by the connector, and the inlet branch pipe is connected to the vertical section. The ends of the vertical section and the inclined section are respectively provided with pneumatic plugs for sealing the inlet branch pipe and the outlet branch pipe and sealing the main pickling pipeline. The outlet branch pipe is connected to the brine recovery tank. The brine addition pipeline is equipped with an electrically controlled valve, and its two ends are respectively connected to the brine mixing tank and the vertical section of the pickling main pipeline; The pressurization system includes a replenishment tank, a T-shaped cylinder located at the connector, and a balance branch pipe located at the inclined section. The vertical port of the T-shaped cylinder is connected to the replenishment tank and is equipped with a first one-way valve. The horizontal port on the right side of the T-shaped cylinder is connected to the connector and to the main pickling pipeline. A second one-way valve is located in the horizontal port on the right side of the T-shaped cylinder. A piston driven by a drive device is located in the horizontal port on the left side of the T-shaped cylinder. The valve core of the first one-way valve opens when it moves downward, and the valve core of the second one-way valve opens when it moves to the right. The balance branch pipe is equipped with a piston head and an elastic element that applies a rebound force to the piston head. The production process includes the following steps: S1. Prepare brine. Prepare brine with a concentration of 10%-11% in the brine mixing tank to ensure that the density of the duck eggs is greater than that of the brine and they sink. S2, add brine, close the pneumatic plug at the inclined section of the pickling main pipe and add the brine prepared in S1 into the pickling main pipe, so that the feed branch pipe and the brine recovery tank are filled with brine; S3, Add duck eggs, open the plug at the vertical section of the main pickling pipe, and add duck eggs to the vertical section of the main pickling pipe. The duck eggs sink to the bottom of the inclined pipe under their own gravity. During the sinking process, the brine in the feed branch pipe buffers the duck eggs. S4, pressurized storage: Pressurization is achieved through a pressurization system. First, external force is applied to the replenishment tank to open the first one-way valve and inject brine into the T-shaped cylinder. Then, the piston is driven to the right by the drive device to close the first one-way valve and open the second one-way valve. The brine in the T-shaped cylinder is forced into the pickling main pipe. At this time, the elastic element in the balance branch pipe is compressed, storing elastic potential energy. The piston head and piston work together to increase the pressure of the brine in the pickling main pipe. After the pressure is balanced, the second one-way valve is closed. At this time, the piston is retracted. When it retracts, the first one-way valve is opened, and the replenishment tank replenishes brine into the T-shaped cylinder. The elastic element applies pressure to the brine in the pickling main pipe and maintains this state for pickling. In this step, the pressure applied to the brine under the same state is adjusted by the elastic element. S5, Brine and Duck Egg Recycling: First, open the two pneumatic plugs to allow the duck eggs in the brine to enter the brine recycling tank. When the duck eggs enter, the brine level is above the screen to act as a buffer. The first recycling branch pipe first draws in the brine to ensure that all duck eggs have a safe buffer level when they fall in. After all the duck eggs have fallen into the brine recycling tank, the second recycling branch pipe draws in the brine to make the brine level in the brine recycling tank lower than the screen and the lowest point of the opening on the side wall of the brine recycling tank at the pull-out collection box. Then, the pull-out collection box is pulled out to take out the pickled duck eggs.

2. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, The inner wall of the balance branch pipe is provided with a limiting step to limit the piston head.

3. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, The elastic element is a spring. The top of the balance branch pipe is threaded with a pressure member. The top and bottom of the spring abut against the pressure member and the piston head, respectively. The pressure of the spring is adjusted when the pressure member is rotated.

4. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, The elastic element is gas sealed in the balance branch pipe. The balance branch pipe is equipped with an air inlet pipe and an air outlet pipe on both sides for depressurization and pressurization inside the balance branch pipe.

5. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, Both the vertical and inclined sections of the main pickling pipe are located on smoothly transitioned protrusions. The pneumatic plug is in a sealing sliding fit with the main pickling pipe, and its end abuts against the protrusion to seal the main pickling pipe.

6. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, The brine recovery tank is equipped with a pull-out collection box. The bottom of the pull-out collection box is a screen. The side of the brine recovery tank is provided with stepped holes for the pull-out collection box to fit against and form a seal. The recovery pipeline includes a first recovery branch pipe, a second recovery branch pipe, and a main recovery pipeline. The first recovery branch pipe and the second recovery branch pipe are located on the upper and lower sides of the screen, respectively, and both the first recovery branch pipe and the second recovery branch pipe are equipped with electrically controlled valves. The first recovery branch pipe and the second recovery branch pipe are connected to the main recovery pipeline, and the pump is installed on the main recovery pipeline.

7. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, It also includes a duck egg feeding structure, which includes a guide seat located at the end of the feeding branch pipe and several spaced guide rods located on the left side of the guide seat and inclined. The guide seat has a guide hole communicating with the inlet of the feeding branch pipe and has a guide groove with a soft inner wall.

8. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, It also includes a return pipe, one end of which is connected to the feed branch pipe and the other end is connected to the brine recovery tank.

9. The low-salt salted duck egg making apparatus according to claim 1, characterized in that, It also includes a replenishment pipeline, one end of which is connected to the brine mixing tank and the other end is connected to the vertical section of the main pickling pipeline, and the replenishment pipeline is equipped with an electrically controlled valve.

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