An oxygen isolation and crushing device for fruits and vegetables

Abstract

The utility model relates to crushing device technical field, and disclose a kind of fruit and vegetable oxygen isolation crushing device, including casing, feeding cavity, crushing cavity, first sealing unloading valve, gas guide pipe, first one-way air valve, pressure relief pipe, second one-way air valve, independent exhaust pipe, third one-way air valve, cavity crushing mechanism, second sealing unloading valve, feed channel, sealing feed valve, gas pipe.Using this structure, through the first sealing unloading valve separation feeding cavity and crushing cavity, when carrying out crushing operation in crushing cavity, feeding cavity can independently complete replenishment and oxygen isolation operation, without waiting for crushing process to end, realize feeding and crushing synchronization, greatly shorten processing cycle.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, specifically a fruit and vegetable oxygen-free crushing device. Background Technology

[0002] In the fruit and vegetable processing industry, oxygen-free crushing is a key process to ensure the taste and quality of processed fruits and vegetables (such as juice and puree). If fruits and vegetables come into contact with large amounts of oxygen during crushing, browning reactions can easily occur, as seen in apples and pears, leading to flavor deterioration and nutrient loss. Most existing oxygen-free crushing equipment, such as the oxygen-free crushing unit with announcement number CN216459376U, while achieving oxygen isolation through a closed chamber and inert gas filling, has a core flaw: the feeding and crushing processes cannot be carried out independently, and the closed chamber is connected to the outside during feeding, causing a large amount of air to enter the chamber with the material. Ultimately, after feeding, the chamber must be resealed and inert gas must be introduced to expel the oxygen. This not only results in a serious waste of inert gas (such as nitrogen) but also interrupts the crushing process, significantly extending the overall processing cycle. Utility Model Content

[0003] This utility model mainly provides a fruit and vegetable oxygen-free crushing device to solve the problems of external air intrusion during feeding, waste of inert gas, and long processing cycle in the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A fruit and vegetable oxygen-barrier crushing device includes a housing. The housing has a feeding chamber and a crushing chamber arranged from top to bottom, connected by a guide channel. A first sealed discharge valve is installed on the guide channel. An air guide pipe is provided between the feeding chamber and the crushing chamber, and a first one-way valve is installed on the air guide pipe. A pressure relief pipe connected to the outside is provided on the feeding chamber, and a second one-way valve is installed on the pressure relief pipe. An independent exhaust pipe connected to the crushing chamber is provided on the housing, and a third one-way valve is installed on the independent exhaust pipe. An internal crushing mechanism is provided on the housing corresponding to the crushing chamber. A second sealed discharge valve is provided on the housing corresponding to the crushing chamber. A feeding channel is provided on the housing corresponding to the feeding chamber, and a sealed feeding valve is installed on the feeding channel. An external gas conveying device's air supply pipe is connected to the crushing chamber. The first, second, and third one-way valves can be any of the existing technologies, as long as they achieve the desired effect in this application, such as food-grade spring-loaded one-way valves or diaphragm one-way valves. The first and second sealed discharge valves can be any of the existing technologies, as long as they achieve the desired effect in this application, such as food-grade eccentric soft-seal butterfly valves or food-grade eccentric hemispherical valves, controlling the flow of fruit and vegetable materials while ensuring high airtightness and isolating oxygen when closed. The sealed feed valve can be any of the existing technologies, as long as it achieves the desired effect in this application, such as a food-grade normally closed diaphragm valve, providing an on / off seal between the feeding chamber and the outside, opening during feeding and closing with zero leakage and oxygen isolation. The external gas conveying device can be a production device for a corresponding inert gas, such as a nitrogen generator.

[0006] The usage is divided into multiple stages:

[0007] Initially, the first sealed discharge valve, the second sealed discharge valve, and the sealed feed valve are all in a completely closed state. The external gas conveying device is connected to the crushing chamber through the gas conveying pipe, and the crushing motor is in a stopped state.

[0008] When feeding, open the sealed feed valve and start the external feeding equipment to send the fruit and vegetable materials into the feeding chamber from the feed channel. Close the sealed feed valve. At this time, the materials are temporarily stored in the feeding chamber. Because the feeding process is connected to the outside, a small amount of outside air will enter the chamber.

[0009] During oxygen degassing, the external gas delivery device is activated, and the selected inert gas, such as nitrogen, is introduced into the crushing chamber through the gas delivery pipe. With the continuous input of nitrogen, the gas pressure in the crushing chamber gradually increases. The oxygen-containing air in the chamber is pushed by the gas pressure and enters the gas delivery pipe through the lower opening of the gas delivery pipe. Then, it flows into the feeding chamber through the first one-way valve. The oxygen-containing air in the feeding chamber, including the outside air that enters during feeding, gradually increases in pressure as nitrogen is continuously replenished. When the gas pressure is higher than the outside atmospheric pressure, the air in the chamber is discharged to the outside through the pressure relief pipe and the second one-way valve. After the discharge reaches a certain standard, the external gas delivery device is stopped or the inert gas is continuously supplied in a low manner. At this time, both the feeding chamber and the crushing chamber are filled with inert gas, and the gas pressure remains stable.

[0010] During crushing and synchronous feeding, the crushing motor is started, driving the crushing shaft and crushing blades to rotate. The first sealed feeding valve is opened, and the material in the feeding chamber slides into the crushing chamber along the guide channel. Because both chambers are inert gas environments, the material is oxygen-free from entering the crushing chamber until the crushing process, preventing oxidation and browning. The material is crushed by the crushing blades in the crushing chamber. If the gas pressure in the crushing chamber drops slightly due to material filling during the crushing process, the external gas conveying device can be intermittently activated to replenish nitrogen. When the crushing chamber is continuously crushing, if the material in the feeding chamber has been emptied, the feeding operation can be carried out simultaneously. Open the sealed feed valve and feed material into the empty feed chamber through the feeding device, then close the sealed feed valve. At this time, because the first sealed discharge valve is closed or the crushing chamber is still under positive pressure, the air that enters the feed chamber during feeding cannot flow back to the crushing chamber through the air guide pipe equipped with the first one-way air valve. After feeding is completed, there is no need to separately purge the crushing chamber with nitrogen. It is only necessary to restart the external gas conveying device to replenish nitrogen into the crushing chamber. The nitrogen in the crushing chamber enters the feed chamber through the air guide pipe under the pressure, and discharges the air in the feed chamber through the pressure relief pipe, thus completing the oxygen isolation of the feed chamber.

[0011] During discharge, once the material in the crushing chamber has been crushed, the crushing motor is turned off, the second sealed discharge valve is opened, and the crushed fruit and vegetable material is discharged. After the material has been completely discharged, the second sealed discharge valve is closed, the first one-way air valve is closed, the third one-way air valve is opened, nitrogen is introduced into the crushing chamber through the external gas conveying device, the air in the crushing chamber is discharged to the outside, and the next round of feeding and crushing cycle begins.

[0012] This structure separates the feeding chamber and the crushing chamber through a first sealed discharge valve. While the crushing chamber is crushing, the feeding chamber can independently complete the feeding and oxygen isolation operations without waiting for the crushing process to finish, achieving synchronous feeding and crushing and significantly shortening the processing cycle. After feeding the feeding chamber, there is no need to separately purge it with nitrogen and remove oxygen. The inert gas introduced into the crushing chamber is used to remove air from the feeding chamber through the air guide pipe, avoiding the repetitive operation of purging nitrogen and removing oxygen after each feeding in traditional equipment, reducing the waste of inert gas and lowering processing costs. A closed-loop oxygen-isolation system is formed by combining multiple one-way valves and sealing valves. The first one-way valve and the first sealed discharge valve prevent gas in the feeding chamber from entering the crushing chamber. The second one-way valve and the second sealed discharge valve prevent backflow of outside air, ensuring a stable oxygen-isolation effect and protecting the taste, color, and nutritional content of the processed products. At the same time, by setting a third one-way valve, it can be opened after the material is discharged from the crushing chamber and work in conjunction with the closed first one-way valve and the first sealed discharge valve to separately discharge the air that entered the crushing chamber during material discharge, thus ensuring a low-oxygen environment.

[0013] Furthermore, the intracavitary crushing mechanism includes a crushing motor disposed outside the housing, the crushing shaft of the crushing motor extending into the crushing chamber, and crushing blades disposed on the crushing shaft located within the crushing chamber. The crushing motor can be any type of existing technology, as long as it can implement the counting principle described in this application, such as a variable frequency asynchronous motor, whose speed can be adjusted according to the hardness of the fruits and vegetables. Using this structure, the crushing motor drives the crushing shaft to rotate, thereby driving the crushing blades to crush the fruits and vegetables.

[0014] Furthermore, the lower opening of the air guide pipe is bent to face the inner wall of the crushing chamber, and a filter screen is provided on the lower opening of the air guide pipe. This structure, with the air guide pipe opening facing the inner wall of the crushing chamber and the filter screen, prevents material from splashing into the air guide pipe opening during crushing, thus preventing blockage and ensuring smooth gas flow.

[0015] Furthermore, a material separating mesh is provided at the upper end of the air guide pipe within the feeding chamber, and the height of the air outlet of the air guide pipe is higher than the inner bottom surface of the feeding chamber. This structure, with the material separating mesh, prevents material in the feeding chamber from directly covering the air outlet of the air guide pipe. The air outlet being higher than the inner bottom surface avoids residual material at the bottom of the feeding chamber from clogging the air outlet, ensuring unobstructed gas flow.

[0016] Furthermore, a one-way air inlet valve is provided on the air supply pipe. This one-way air inlet valve can be any type of existing technology, as long as it achieves the desired effect in this application, such as a food-grade miniature spring-loaded one-way valve. This structure prevents air backflow into the crushing chamber.

[0017] Beneficial effects: By separating the feeding chamber and crushing chamber through the first sealed discharge valve, the feeding chamber can independently complete feeding and oxygen isolation operations while the crushing chamber is performing crushing operations, without waiting for the crushing process to end, achieving synchronous feeding and crushing, and significantly shortening the processing cycle; after feeding the feeding chamber, there is no need to separately purge it with nitrogen and remove oxygen, as the inert gas introduced into the crushing chamber is used to remove air from the feeding chamber through the air guide pipe, avoiding the repetitive operation of purging nitrogen and removing oxygen after each feeding in traditional equipment, reducing the waste of inert gas and lowering processing costs; A closed-loop oxygen-isolation system is formed by combining multiple one-way valves and sealing valves. The first one-way air valve and the first sealed discharge valve prevent gas in the feeding chamber from entering the crushing chamber. The second one-way air valve and the second sealed discharge valve prevent backflow of outside air, ensuring stable oxygen isolation and protecting the taste, color, and nutritional content of the processed products. At the same time, by setting a third one-way air valve, it can be opened after the material is discharged from the crushing chamber and work in conjunction with the closed first one-way air valve and the first sealed discharge valve to separately discharge the air that entered the crushing chamber during material discharge, thus ensuring a low-oxygen environment. Attached Figure Description

[0018] Figure 1 This is a first oblique view of the feeding chamber in this embodiment;

[0019] Figure 2 This is a second oblique view of the feeding chamber in this embodiment;

[0020] Figure 3 This is a cross-sectional schematic diagram of the feeding chamber in this embodiment.

[0021] Reference numerals in the attached drawings: 1. Feeding chamber; 2. Crushing chamber; 3. First sealed discharge valve; 4. Air guide pipe; 5. First one-way air valve; 6. Pressure relief pipe; 7. Second one-way air valve; 8. Independent exhaust pipe; 9. Third one-way air valve; 10. Second sealed discharge valve; 11. Sealed feed valve; 12. Air supply pipe; 13. Crushing motor; 14. Crushing shaft; 15. Crushing blade; 16. Filter screen; 17. Material separator screen. Detailed Implementation

[0022] The technical solution of the fruit and vegetable oxygen-barrier crushing device of this utility model will be further described in detail below with reference to the embodiments.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment of a fruit and vegetable oxygen-barrier crushing device includes a housing. The housing has a feeding chamber 1 and a crushing chamber 2 arranged from top to bottom. The feeding chamber 1 and the crushing chamber 2 are connected by a material guide channel. A first sealed discharge valve 3 is installed on the material guide channel. A gas guide pipe 4 is provided between the feeding chamber 1 and the crushing chamber 2. A first one-way valve 5 is installed on the gas guide pipe 4. A pressure relief pipe 6 connected to the outside is provided on the feeding chamber 1. A second one-way valve 7 is installed on the pressure relief pipe 6. An independent exhaust pipe 8 connected to the crushing chamber 2 is provided on the housing. A third one-way valve 9 is installed on the independent exhaust pipe 8. An internal crushing mechanism is provided on the housing corresponding to the crushing chamber 2. A second sealed discharge valve 10 is provided on the housing corresponding to the crushing chamber 2. A feeding channel is provided on the housing corresponding to the feeding chamber 1. A sealed feeding valve 11 is installed on the feeding channel. An external gas conveying device's gas supply pipe 12 is connected to the crushing chamber 2. The internal crushing mechanism includes a crushing motor 13 disposed outside the housing. The crushing shaft 14 of the crushing motor 13 extends into the crushing chamber 2, and a crushing blade 15 is disposed on the crushing shaft 14 located within the crushing chamber 2. The lower end opening of the air guide pipe 4 is bent to face the inner wall of the crushing chamber 2, and a filter screen 16 is disposed on the lower end opening of the air guide pipe 4. A material separating screen 17 is disposed in the feeding chamber 1 corresponding to the upper end of the air guide pipe 4, and the height of the air outlet of the air guide pipe 4 is higher than the height of the inner bottom surface of the feeding chamber 1. A one-way air inlet valve is disposed on the air supply pipe 12.

[0025] The usage is divided into multiple stages:

[0026] Initially, the first sealed discharge valve 3, the second sealed discharge valve 10, and the sealed feed valve 11 are all in a completely closed state. The external gas conveying device is connected to the crushing chamber 2 through the gas conveying pipe 12, and the crushing motor 13 is in a stopped state.

[0027] When feeding, open the sealed feed valve 11, then start the external feeding equipment to send the fruit and vegetable materials into the feeding chamber 1 from the feeding channel, and close the sealed feed valve 11. At this time, the materials are temporarily stored in the feeding chamber 1, and because the feeding process is connected to the outside, a small amount of outside air will enter the chamber.

[0028] During oxygen degassing, the external gas delivery device is activated, and the selected inert gas, such as nitrogen, is introduced into the crushing chamber 2 through the gas delivery pipe 12. With the continuous input of nitrogen, the gas pressure in the crushing chamber 2 gradually increases. The oxygen-containing air in the chamber is pushed by the gas pressure and enters the gas delivery pipe 4 through the lower opening of the gas delivery pipe 4, and then flows into the feeding chamber 1 through the first one-way valve 5. The oxygen-containing air in the feeding chamber 1, including the outside air that enters during feeding, gradually increases in pressure as nitrogen is continuously replenished. When the gas pressure is higher than the outside atmospheric pressure, the air in the chamber is discharged to the outside through the pressure relief pipe 6 and the second one-way valve 7. After the discharge reaches a certain standard, the external gas delivery device is stopped or the inert gas is continuously supplied in a low-input manner. At this time, both the feeding chamber 1 and the crushing chamber 2 are filled with inert gas, and the gas pressure remains stable.

[0029] During crushing and synchronous feeding, the crushing motor 13 is started, which drives the crushing shaft 14 and the crushing blade 15 to rotate. The first sealing discharge valve 3 is opened, and the material in the feeding chamber 1 slides into the crushing chamber 2 along the guide channel. Since both chambers are inert gas environments, the material is oxygen-free from entering the crushing chamber 2 until the crushing process, thus avoiding oxidation and browning. The material is crushed by the crushing blade 15 in the crushing chamber 2. If the gas pressure in the crushing chamber 2 drops slightly due to the filling of material during the crushing process, the external gas conveying device can be started intermittently to replenish nitrogen. When the crushing chamber 2 is continuously crushing, if the material in the feeding chamber 1 has been emptied, the feeding operation can be carried out synchronously. Open the sealed feed valve 11 and feed material into the empty feed chamber 1 through the feeding equipment, then close the sealed feed valve 11. At this time, because the first sealed discharge valve 3 is in the closed state or the crushing chamber 2 is still under positive pressure, the air that enters the feed chamber 1 during feeding cannot flow back to the crushing chamber 2 through the air guide pipe 4 equipped with the first one-way air valve 5. After feeding is completed, there is no need to separately fill the crushing chamber 2 with nitrogen. It is only necessary to start the external gas conveying device again to feed nitrogen into the crushing chamber 2. The nitrogen in the crushing chamber 2 enters the feed chamber 1 through the air guide pipe 4 under the pressure, and discharges the air in the feed chamber 1 through the pressure relief pipe 6, thus completing the oxygen isolation of the feed chamber 1.

[0030] When discharging, after the material in the crushing chamber 2 has been crushed, the crushing motor 13 is turned off and the second sealed discharge valve 10 is opened to discharge the crushed fruit and vegetable material. After the material has been completely discharged, the second sealed discharge valve 10 is closed, the first one-way air valve 5 is closed, the third one-way air valve 9 is opened, nitrogen is introduced into the crushing chamber 2 through the external gas conveying device, the air in the crushing chamber 2 is discharged to the outside, and the next round of feeding and crushing cycle begins.

[0031] This structure separates the feeding chamber 1 and the crushing chamber 2 via the first sealed discharge valve 3. While the crushing chamber 2 is in operation, the feeding chamber 1 can independently complete feeding and oxygen deprivation operations without waiting for the crushing process to finish, achieving synchronous feeding and crushing and significantly shortening the processing cycle. After feeding the feeding chamber 1, there is no need for separate nitrogen purging and oxygen removal. The inert gas introduced into the crushing chamber 2 is used to vent air from the feeding chamber 1 through the air guide pipe 4, avoiding the repetitive nitrogen purging and oxygen removal operations required after each feeding in traditional equipment. This reduces the waste of inert gas and lowers processing costs. A closed-loop oxygen-isolation system is formed by combining multiple one-way valves and sealing valves. The first one-way valve 5 and the first sealed discharge valve 3 prevent gas in the feeding chamber 1 from entering the crushing chamber 2. The second one-way valve 7 and the second sealed discharge valve 10 prevent backflow of external air. The oxygen isolation effect is stable, ensuring the taste, color and nutritional content of the processed products. At the same time, by setting a third one-way valve 9, after the material is discharged from the crushing chamber 2, it can be opened and cooperated with the closed first one-way valve 5 and the first sealed discharge valve 3 to separately discharge the air that entered the crushing chamber 2 due to the material discharge, thus ensuring a low-oxygen environment.

[0032] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge or conventional technology in the field. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fruit and vegetable oxygen-free crushing device, characterized in that: The device includes a housing, within which a feeding chamber and a crushing chamber are formed from top to bottom. The feeding chamber and the crushing chamber are connected by a material guide channel, on which a first sealing discharge valve is installed. An air guide pipe is provided between the feeding chamber and the crushing chamber, and a first one-way air valve is installed on the air guide pipe. A pressure relief pipe connected to the outside is provided on the feeding chamber, and a second one-way air valve is installed on the pressure relief pipe. An independent exhaust pipe connected to the crushing chamber is provided on the housing, and a third one-way air valve is installed on the independent exhaust pipe. An internal crushing mechanism is provided on the housing corresponding to the crushing chamber. A second sealed discharge valve is provided on the casing corresponding to the crushing chamber; a feeding channel is provided on the casing corresponding to the feeding chamber, and a sealed feed valve is provided on the feeding channel; the gas supply pipe of the external gas conveying device is connected to the crushing chamber.

2. The fruit and vegetable oxygen-barrier crushing device according to claim 1, characterized in that: The in-cavity crushing mechanism includes a crushing motor disposed outside the housing, the crushing shaft of the crushing motor extending into the crushing cavity, and a crushing blade disposed on the crushing shaft located in the crushing cavity.

3. The fruit and vegetable oxygen-barrier crushing device according to claim 1, characterized in that: The lower end of the air guide pipe is bent and faces the inner wall of the crushing chamber, and a filter screen is provided on the lower end of the air guide pipe.

4. The fruit and vegetable oxygen-barrier crushing device according to claim 1, characterized in that: A material separating mesh is provided inside the feeding chamber corresponding to the upper end of the air guide pipe, and the height of the air outlet of the air guide pipe is higher than the height of the inner bottom surface of the feeding chamber.

5. The fruit and vegetable oxygen-barrier crushing device according to claim 1, characterized in that: The gas pipeline is equipped with a one-way air inlet valve.

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