A self-opening sealing packaging cap and container

Abstract

This invention relates to the field of packaging technology and discloses a self-extracting sealing packaging cap. A suction tube is installed inside the liquid extraction port of the packaging cap shell. The suction tube is connected to a discharge tube via a gear pump. The end of the discharge tube sleeve is fixedly connected to a nut fitted onto and cooperating with a lead screw. The nut, at its maximum stroke position, presses a first push-button switch; at its minimum stroke position, it presses a second push-button switch. A main control switch is located on the top of the packaging cap shell. The pins of the main control switch are connected to a lead screw motor and a gear pump. The lead screw motor and gear pump are powered by a power source located inside the packaging cap shell. In this self-extracting sealing packaging cap container, the suction tube extends from the extraction port and connects to the opening of the packaging bag. The inner packaging bag is placed inside an outer packaging bottle, and the top of the outer packaging container is fitted with a detachable self-extracting sealing packaging cap. This device can automatically dispensing and automatically stopping liquid, has a stable control circuit, low energy consumption, and is suitable for liquid storage containers of different capacities, making it widely applicable.

Description

Technical Field

[0001] This invention relates to the field of packaging technology, and particularly to the field of sealed packaging products, specifically a self-opening sealed packaging cap and container. Background Technology

[0002] During the storage of edible oils, the unsaturated fatty acids in the oils are highly susceptible to oxidation by light, heat, enzymes, and metal particles, easily leading to spoilage and the generation of free radicals and compounds such as aldehydes and ketones. This destroys the nutritional elements of the oils and produces an unpleasant odor (commonly known as rancidity). Ingesting severely rancid oils can cause discomfort, abdominal pain, diarrhea, and other symptoms. According to statistics, several cases of acute food poisoning caused by the accidental consumption of food containing rancid oils occur in my country every year.

[0003] The most important aspect of oxidative rancidity in oils and fats is auto-oxidation, which includes the chain initiation, chain propagation, and chain termination stages. Specifically, the H atom at the α-position of the double bond in unsaturated oils and fats is attacked by oxygen and falls off (RH → R· + H·), generating R' (containing an olefinic free radical). The generated olefinic free radical combines with oxygen to form ROO· (peroxide free radical). Subsequently, the peroxide free radical captures hydrogen atoms from other lipid molecules to form hydroperoxides (ROOH) and new free radicals. This cycle repeats itself. When free radicals accumulate to a certain level, two free radicals can effectively collide to form a dimer. The formed dimer is often unstable and can further decompose and polymerize into substances such as aldehydes, acids, ketones, and alcohols, resulting in oxidative deterioration of the oils and fats. To prevent or slow down the deterioration of edible oils and fats, measures such as adding antioxidants, low temperature, protection from light, and sealed storage are usually taken to block the free radical oxidation chain reaction of oils and fats.

[0004] Currently, adding antioxidants is often used to extend the shelf life and storage time of oils. There are many types of antioxidants, such as BHT, BHA, PG, and TBHQ. These artificially synthesized antioxidants pose potential harm to the human body and may cause tissue cancer. When antioxidants work, the free radicals produced by oxidation are inhibited or eliminated by the antioxidants. However, when the antioxidants are depleted, the rate of free radical generation accelerates, which can actually accelerate the oxidative rancidity of edible oils in the later stages of storage.

[0005] During the storage of oils, the likelihood of oil oxidation increases whenever oxygen is present. Therefore, isolating oils from air (oxygen) is fundamental and crucial for preventing oxidation, rancidity, and maintaining freshness.

[0006] Some studies have used "ammonia-filled preservation" to preserve edible oils. However, this method requires sophisticated processes and equipment, leading to high costs for businesses. Furthermore, once the bottle is opened, the nitrogen mixes with air, rendering it ineffective. Moreover, the oil loses its antioxidant properties when poured into a household oil dispenser. In everyday oil dispensers, a float is placed on the oil surface. After pouring, the bottle is tilted upwards, and the bottle is squeezed. The buoyancy of the oil causes the float to seal the opening, preventing air from entering. This method requires precise control of the amount of air squeezed out, which can easily result in accidentally squeezing out oil. Patent number 20171026298343, "A Sealing Method and Cap for Anti-oxidation Edible Oil Bottles," discloses a method where oil flows out by squeezing a foldable oil bottle. However, due to the check valve on the cap, air cannot enter the bottle. This method suffers from the problem of remaining oil being unable to be removed, and the folded bottle bag being unsightly. Summary of the Invention

[0007] This invention addresses the current lack of suitable and stable packaging containers for liquids that are frequently opened and require oxygen-free preservation, especially in households where oil usage is high. During use, repeated contact with air accelerates oil oxidation, leading to increased preservation requirements for small-packaged edible oils. Existing designs fail to meet these requirements, or are cumbersome to handle, increasing operational difficulty, and are aesthetically unappealing when squeezed. Therefore, this invention provides a self-opening sealing cap and container that caters to the needs of traditional, sporadic oil dispensing while also offering the convenience and ease of modern household use.

[0008] This invention is achieved using the following technology: A self-extracting sealing packaging cap is provided. The outer shell of the cap has a liquid extraction port, inside which a suction tube is installed. The suction tube is connected to an outlet tube via a gear pump. An outlet tube sleeve is fitted to the end of the outlet tube, which extends through a drain outlet on the outer shell of the cap. The end of the outlet tube sleeve is fixedly connected to a nut fitted onto and cooperating with a lead screw. The lead screw is driven to rotate by a lead screw motor. A first push-button switch and a second push-button switch are provided on the inner wall of the outer shell of the cap. The first push-button switch is activated when the nut is at the maximum stroke position of the lead screw, and the second push-button switch is activated when the nut is at the minimum stroke position of the lead screw. A main control switch is located on the top of the outer shell of the cap. The pins of the main control switch are connected to the lead screw motor and the gear pump. The lead screw motor and the gear pump are powered by a power source located inside the outer shell of the cap.

[0009] In implementation, a liquid extraction port is opened on the outer shell of the packaging cap, and a suction tube is installed inside the extraction port. The end of the suction tube extends out of the extraction port and is connected to the inlet of a gear pump. The outlet of the gear pump is connected to the beginning of the outlet tube. The suction tube is made of flexible material and is connected to the outlet tube through the gear pump. The gear pump can also be a miniature diaphragm pump, peristaltic pump, etc. While meeting the flow requirements, it is made of oil-resistant, food-grade material to ensure safe use. An outlet tube sleeve is fitted to the end of the outlet tube, and the outlet tube is made of a rigid material. The outlet tube itself is made of a flexible, bendable, and sealable material. The outlet tube features a self-extraction sealing mechanism. The packaging cap features a large-radius bend to ensure the outlet tube doesn't bend and seal properly, preventing oil blockage. Alternatively, the suction tube at the bend has a corrugated design for extension and retraction. This means the entire outlet tube is constrained by only one bend in the outlet sleeve, preventing pressure loss in the gear pump and thus reducing oil output. The outlet sleeve extends from the pouring port on the outer shell of the packaging cap, sliding back and forth within it. The outlet sleeve has a right-angle bend extending from the pouring port, which allows the oil to flow downwards for easy collection and also closes the outlet to prevent dripping. The bend also causes the outlet tube to self-seal. During use, pressurized oil is forced through the bend and constriction to flow out. The end of the outlet tube is fixedly connected to a nut fitted onto and cooperating with the lead screw. The lead screw is driven to rotate by a lead screw motor, and the nut moves on the lead screw. The lead screw and lead screw motor are located at the bottom inside the outer shell of the packaging cap. The outlet tube is positioned parallel above the lead screw and moves with the rotation of the nut. When the nut reaches its minimum stroke, the outlet tube retracts into the outer shell of the packaging cap. The inner wall of the outer shell of the packaging cap is equipped with a first button switch and a second button switch. When the nut is at the maximum stroke position of the lead screw, it presses down the first button switch, i.e., when the outlet tube extends, the nut presses down the first button switch. The first and second push-button switches are used to control the start and stop of the gear pump and the rotation of the lead screw motor, respectively. The first push-button switch is located on the top of the packaging cover. The main control switch is a six-pin self-locking push-button switch. The user operates the main control switch to start and stop the pump. The pins of the main control switch are connected to the lead screw motor and the gear pump. The lead screw motor and the gear pump are powered by a 3.7V rechargeable battery located inside the packaging cover. The rechargeable battery is charged through a charging module.

[0010] The main control switch has six pins: pin 1, pin 2, pin 3, pin 4, pin 5, and pin 6. The first push-button switch has a seventh and eighth contact, and the second push-button switch has a ninth contact. When the first push-button switch is released, the seventh contact is in the closed state, and the eighth contact is in the open state. When the second push-button switch is released, the ninth contact is in the closed state. The first and second push-button switches are non-locking limit switches, meaning they are pressed down and automatically released when removed. Pin 1 is connected to the positive terminal of the power supply, pin 2 is connected to the positive terminal of the lead screw motor, and the negative terminal of the lead screw motor is connected to pin 5. The three pins are connected to the negative terminal of the power supply; the main control switch is a six-pin self-locking micro switch with two independent sets of one on and one off contacts. When the main control switch is pressed, the second pin is connected to the first pin, and the fifth pin is connected to the fourth pin; when the main control switch is released, the second pin is connected to the third pin, and the fifth pin is connected to the sixth pin; the ninth contact of the second button switch is connected between the first pin and the sixth pin, and the seventh contact of the first button switch is connected between the third pin and the fourth pin. The eighth contact of the first button switch is located on the line between the positive terminal of the power supply and the positive terminal of the gear pump, and the negative terminal of the gear pump is connected to the negative terminal of the power supply.

[0011] When in use, press the main control switch. The first pin and the second pin are connected, and the fourth pin and the fifth pin are connected. The positive terminal of the power supply is connected to the lead screw motor through the first and second pins. The lead screw motor is connected to the negative terminal of the power supply through the fifth, fourth, and third pins, forming a closed circuit. The lead screw motor drives the lead screw to rotate forward, the nut moves away from the second button switch and away from the lead screw motor, and the liquid outlet sleeve and the liquid outlet tube extend outward.

[0012] When the nut reaches its maximum stroke, it presses the first button switch, the seventh contact opens, the eighth contact closes, the lead screw motor is de-energized, the lead screw stops rotating, the positive terminal of the power supply is connected to the positive terminal of the gear pump through the eighth contact, and the negative terminal of the gear pump is connected to the negative terminal of the power supply. The gear pump draws oil from the suction pipe to the discharge pipe. The pressure of the gear pump forces the edible oil to squeeze through the bend and seal of the discharge pipe and pour out the oil.

[0013] When enough oil has been drawn, press the main control switch again to make it pop up. The second and third pins are connected, and the fifth and sixth pins are connected. The positive terminal of the power supply is connected to the negative terminal of the lead screw motor through the first pin, the ninth contact, the sixth pin, and the fifth pin. The positive terminal of the lead screw motor is connected to the negative terminal of the power supply through the second and third pins, forming a closed circuit. The lead screw motor rotates in the reverse direction, causing the lead screw to rotate in the reverse direction. The nut moves away from the first button switch and closer to the lead screw motor. The eighth contact is disconnected, the gear pump stops drawing oil, and the outlet sleeve and outlet pipe retract inward.

[0014] When the nut reaches its minimum stroke, that is, when the nut returns to the starting position, the liquid outlet sleeve and the liquid outlet pipe retract inward. The nut then presses the second button switch, the ninth contact opens, the lead screw motor stops rotating, and the reset is completed.

[0015] The present invention also provides a container with a self-extracting sealing cap. The end of the suction tube extending from the suction port is connected to the opening of the inner packaging bag via a pagoda adapter. The opening of the packaging bag is provided with a suction tube facing inward. The free end of the suction tube extends into the bottom of the inner packaging bag. The inner packaging bag is placed in the outer packaging container. The self-extracting sealing cap can be detachably installed on the top of the outer packaging container.

[0016] In practice, the suction tube extends from the suction port and connects to the inner packaging bag via a pagoda-shaped adapter. The inner packaging bag is in direct contact with the edible oil and must meet the hygiene standards for edible oil packaging. The inner packaging bag is made of aluminized PET and nylon composite film. The inner packaging can deflate inward as the amount of oil decreases. A suction tube is installed inside the packaging bag opening. One end of the pagoda-shaped adapter is inserted into the suction tube, and the other end is inserted into the suction tube. The part of the suction tube inserted into the pagoda-shaped adapter is close to the inner wall of the packaging bag opening. The suction tube is clamped between the packaging bag opening and the pagoda-shaped adapter. Depending on actual production needs, the suction tube can be pre-fixed inside the packaging bag opening or can be inserted movably for repeated use. The free end of the suction tube extends to the bottom of the inner packaging bag. The inner packaging bag is placed in the outer packaging container, which is made of rigid material. A self-opening sealing cap can be detachably installed on the top of the outer packaging container. The self-opening sealing cap can also be placed inside the outer packaging container, depending on the appearance design requirements.

[0017] During installation, remove the outer packaging cap, unscrew the sealing cap of the inner packaging bag, insert the pre-attached straw into the pagoda-shaped adapter, and tighten it. If there is air inside the bag, be sure to expel the air before tightening. Then place the inner packaging bag into the outer packaging container and close the cap. Repeat the same process when replacing an empty inner packaging bag. Use the straw to draw the oil from the inner packaging bag into the straw. Fold the inner packaging bag inward to prevent air from entering, minimizing contact between the edible oil and air and preventing oxidation and rancidity.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention relates to a self-extracting sealing cap and container, providing a convenient sealing cap that can be used not only for household cooking oils but also more broadly for liquids with high flow indexes that require air isolation or reduced contact with air for preservation. Using this packaging container in food can reduce the use of antioxidants and preservatives, which is beneficial to human health. Especially when using this device on edible oils, because air is isolated, there is no need to use antioxidants. This benefits oil manufacturers in cost control and is also beneficial to the health of consumers and users.

[0020] This device uses this control circuit, which allows for a simple start / stop button operation to control the extension, dispensing, and retraction of the dispensing tube in a complete cycle. The circuit design is simple, and operation is convenient and error-free; only one button is needed for automatic dispensing and stopping. The packaging is stylish and novel, will not deform due to liquid reduction, has an attractive appearance, and the control circuit is stable, reducing energy consumption. It is suitable for liquid storage containers of different capacities and has a wide range of applications. Attached Figure Description

[0021] Figure 1 This is a front view of a self-opening, resealable packaging cap.

[0022] Figure 2 This is a left view of a self-opening, resealable packaging cap.

[0023] Figure 3 This is a right view of a self-opening, resealable packaging cap.

[0024] Figure 4 This is a top view of a self-opening, resealable packaging cap.

[0025] Figure 5 This diagram shows the installation of the lead screw, lead screw motor, and nut.

[0026] Figure 6 This is a schematic diagram of a container with a self-opening sealing cap.

[0027] Figure 7 The circuit connection diagram shows the liquid outlet tube when it is extended.

[0028] Figure 8 The circuit connection diagram shows the liquid outlet tube when it is in position.

[0029] Figure 9 The circuit connection diagram shows the completion of oil discharge.

[0030] Figure 10 The circuit connection diagram shows the retraction of the liquid outlet tube.

[0031] In the diagram: 1-Pin 1, 2-Pin 2, 3-Pin 3, 4-Pin 4, 5-Pin 5, 6-Pin 6, 7-Seventh contact, 8-Eighth contact, 9-Ninth contact, 10-Suction tube, 11-Discharge tube, 12-Discharge tube sleeve, 13-Packaging cap shell, 14-Packaging bag opening, 15-Outer packaging container, 16-Inner packaging bag, 17-Suction tube, 18-Suction port, 19-Pour port, 20-Lead screw motor, 21-Gear pump, 22-Lead screw, 23-Nut, 24-Main control switch, 25-First button switch, 26-Second button switch, 27-Power supply, 28-Charging module, 29-Transfer adapter. Implementation

[0032] The specific embodiments of the present invention will be described in detail below. Example 1

[0033] A self-opening sealing cap, such as Figures 1-5 As shown, the outer shell 13 of the packaging cap has a liquid extraction port 18, and a suction tube 10 is installed inside the liquid extraction port 18. The end of the suction tube 10 extends out of the liquid extraction port 18 and is connected to the inlet of the gear pump 21. The outlet of the gear pump 21 is connected to the starting end of the outlet tube 11. The suction tube 10 is made of flexible material and can bend freely in the self-extracting sealing packaging cap without obstructing the flow of oil. The suction tube 10 is connected to the outlet tube 11 through the gear pump 21. The end of the outlet tube 11 is fitted with an outlet tube sleeve 12, which is made of rigid material. The outlet tube 11 is made of flexible material that can be bent and sealed. The outlet tube 11 is installed in the self-extracting sealing packaging cap. A large-radius bend ensures that the outlet pipe 11 does not bend and seal, preventing oil blockage. Combined with the extension and retraction mechanism, the entire outlet pipe 11 is restrained by only one bend in the outlet pipe sleeve 12, preventing pressure loss in the gear pump 21 and thus reducing oil output. The outlet pipe sleeve 12 extends from the drain port 19 on the outer casing 13 of the packaging cap. The outlet pipe sleeve 12 slides back and forth within the drain port 19. The outlet pipe sleeve 12 has a bend extending from the drain port 19, with a right-angle bend. This bend allows the oil to flow downwards for easy collection and also closes the outlet, preventing oil dripping. The bend causes the outlet pipe 11 to be restrained and self-sealed. During use, pressurized oil is forced through the bend and flows out. Figure 5The end of the liquid outlet sleeve 12 is fixedly connected to a nut 23 that is sleeved on and mates with the lead screw 22. The lead screw 22 is driven to rotate by the lead screw motor 20, and the nut 23 moves on the lead screw 22. The lead screw 22 and the lead screw motor 20 are located at the bottom inside the packaging cap shell 13. The liquid outlet sleeve 12 is arranged parallel above the lead screw 22 and moves with the rotation of the nut. When the nut 23 moves to its minimum stroke, the liquid outlet sleeve 12 retracts into the packaging cap shell 13. The inner wall of the packaging cap shell 13 is provided with a first button switch 25 and a second button switch 26. When the nut 23 is at the maximum stroke position of the lead screw 22, it presses the first button switch 25. That is, when the liquid outlet sleeve 12 extends, the nut 23 presses down the first button switch 25. Nut 23 presses down the second button switch 26 at the minimum stroke position of lead screw 22. That is, when the liquid outlet sleeve 12 retracts, nut 23 presses down the second button switch 26. The first button switch 25 and the second button switch 26 are used to control the start and stop of gear pump 21 and the rotation of lead screw motor 20, respectively. The top of the packaging cover shell 13 is equipped with a main control switch 24, which is a six-pin self-locking button switch. The user operates the main control switch 24 to start and stop. The pins of the main control switch 24 are connected to lead screw motor 20 and gear pump 21. Lead screw motor 20 and gear pump 21 are powered by power supply 27 located inside packaging cover shell 13. Power supply 27 is a 3.7V rechargeable battery, which is charged through charging module 28.

[0034] like Figure 6 The main control switch 24 shown has six pins: pin 1, pin 2, pin 3, pin 4, pin 5, and pin 6. The first push-button switch has a seventh contact 7 and an eighth contact 8, and the second push-button switch has a ninth contact 9. When the first push-button switch 25 is released, the seventh contact 7 is in the closed state, and the eighth contact 8 is in the open state. When the second push-button switch 26 is released, the ninth contact 9 is in the closed state. The first push-button switches 25 and 26 are unlocked push-button limit switches, meaning they are pressed down and automatically released when removed. Pin 1 is connected to the positive terminal of the power supply 27, pin 2 is connected to the positive terminal of the lead screw motor 20, and the negative terminal of the lead screw motor 20 is connected to pin 5. Pin 6 is connected to the negative terminal of the lead screw motor 20. The pin is connected to the negative terminal of power supply 27; the main control switch 24 is a six-pin self-locking micro switch with two independent sets of one on and one off contacts. When the main control switch 24 is pressed, the second pin 2 is connected to the first pin 1, and the fifth pin 5 is connected to the fourth pin 4; when the main control switch 24 is released, the second pin 2 is connected to the third pin 3, and the fifth pin 5 is connected to the sixth pin 6; the ninth contact 9 of the second button switch 26 is connected between the first pin 1 and the sixth pin 6, and the seventh contact 7 of the first button switch 25 is connected between the third pin 3 and the fourth pin 4. The eighth contact 8 of the first button switch 25 is set on the line between the positive terminal of power supply 27 and the positive terminal of gear pump 21, and the negative terminal of gear pump 21 is connected to the negative terminal of power supply 27.

[0035] When using, such as Figure 7 As shown, when the main control switch 24 is pressed, the first pin 1 and the second pin 2 are connected, and the fourth pin 4 and the fifth pin 5 are connected. The positive terminal of the power supply 27 is connected to the lead screw motor 20 through the first pin 1 and the second pin 2. The lead screw motor 20 is connected to the negative terminal of the power supply 27 through the fifth pin 5, the fourth pin 4, and the third pin 3, forming a closed circuit. The lead screw motor 20 drives the lead screw 22 to rotate forward, and the nut 23 moves away from the second button switch 26 and away from the lead screw motor 20. The liquid outlet sleeve 12 and the liquid outlet pipe 11 extend outward.

[0036] like Figure 8 As shown, when nut 23 moves to its maximum stroke, nut 23 presses the first button switch 25, the seventh contact 7 is disconnected, the eighth contact 8 is connected, the lead screw motor 20 is de-energized, the lead screw 22 stops rotating, the positive terminal of power supply 27 is connected to the positive terminal of gear pump 21 through the eighth contact 8, and the negative terminal of gear pump 21 is connected to the negative terminal of power supply 27. Gear pump 21 draws oil from suction pipe 10 to discharge pipe 11. The pressure of gear pump causes the edible oil to squeeze through the bend and seal of discharge pipe, and the oil is poured out.

[0037] like Figure 9 As shown, when enough oil has been drawn, the main control switch 24 is pressed again to make it pop up. The second pin 2 and the third pin 3 are connected, and the fifth pin 5 and the sixth pin 6 are connected. The positive terminal of the power supply 27 is connected to the negative terminal of the lead screw motor 20 through the first pin 1, the ninth contact 9, the sixth pin 6, and the fifth pin 5. The positive terminal of the lead screw motor 20 is connected to the negative terminal of the power supply 27 through the second pin 2 and the third pin 3, forming a closed circuit. The lead screw motor 20 rotates in the reverse direction, driving the lead screw 22 to rotate in the reverse direction. The nut 23 moves away from the first button switch 25 and closer to the lead screw motor 20. The eighth contact 8 is disconnected, the gear pump 21 stops drawing oil, and the outlet sleeve 12 and the outlet pipe 11 retract inward.

[0038] When nut 23 reaches its minimum stroke, that is, when nut 23 returns to its starting position, the inward retraction of the outlet sleeve 12 and the outlet pipe 11 is completed. Figure 10 As shown, when nut 23 presses the second push-button switch 26, the ninth contact 9 opens, the lead screw motor 20 stops rotating, completing the reset and returning to normal. Figure 7 state. Example 2

[0039] A container with a self-opening sealing cap, such as Figure 6As shown, the suction tube 10 extends from the suction port 18 and connects to the opening 14 of the inner packaging bag 16 via a pagoda-shaped adapter 29. The inner packaging bag 16 is in direct contact with the edible oil and must meet the hygiene requirements for edible oil packaging. The inner packaging bag 16 is made of aluminized PET and nylon composite film. The inner packaging can deflate inward as the amount of oil decreases. A suction tube 17 is provided inside the opening 14 of the packaging bag. One end of the pagoda-shaped adapter 29 is inserted into the suction tube 10, and the other end of the pagoda-shaped adapter 29 is inserted into the suction tube 17. Inside the tube 17, the part of the straw 17 that inserts the pagoda adapter 29 is tightly attached to the inner wall of the packaging bag opening 14. The straw is clamped between the packaging bag opening 14 and the pagoda adapter 29. According to actual production needs, the straw can be pre-fixed inside the packaging bag opening 14, or it can be inserted and reused repeatedly. The free end of the straw 17 extends into the bottom of the inner packaging bag 16. The inner packaging bag 16 is placed in the outer packaging container 15. The outer packaging container 15 is made of rigid material. The top of the outer packaging container 15 can be detachably installed with a self-extracting sealing packaging cap.

[0040] During installation, remove the packaging cap, unscrew the sealing cap of the inner packaging bag 16, insert the pagoda adapter 29 with the straw 17 already attached, and tighten it. If there is air inside the bag, be sure to expel the air before tightening. Then place the inner packaging bag 16 into the outer packaging container 15 and close the packaging cap. Repeat the same procedure when replacing an empty inner packaging bag 16. The straw 17 draws the oil from the inner packaging bag 16 into the suction tube 10. The inner packaging bag 16 is folded inward to prevent air from entering, minimizing contact between the edible oil and air and avoiding oxidation and rancidity.

[0041] The scope of protection claimed by this invention is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this invention can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A self-pouring, sealed package lid, characterized by: The application relates to a packaging cap shell (13) provided with a liquid suction opening (18) and a liquid suction pipe (10) installed in the liquid suction opening (18), wherein the liquid suction pipe (10) is connected with a gear pump (21) and an outlet pipe (11), the outlet pipe (11) is sleeved with an outlet pipe sleeve (12), the outlet pipe sleeve (12) is arranged to pass through a liquid pouring opening (19) arranged on the packaging cap shell (13), the outlet pipe sleeve (12) is fixedly connected with a nut (23) sleeved on a lead screw (22) and matched with the lead screw (22), the lead screw (22) is driven to rotate by a lead screw motor (20), the lead screw motor drives the lead screw to rotate in a positive direction, and the outlet pipe sleeve and the outlet pipe are extended outward; the lead screw motor is reversely rotated, and the outlet pipe sleeve and the outlet pipe are retracted inward; the inner wall of the packaging cap shell (13) is provided with a first button switch (25) and a second button switch (26), the nut (23) is arranged to press the first button switch (25) at the maximum stroke position of the lead screw (22), and the nut (23) is arranged to press the second button switch (26) at the minimum stroke position of the lead screw (22); the first button switch (25) and the second button switch (26) are respectively used for controlling the start and stop of the gear pump (21) and the rotation of the lead screw motor (20); the top of the packaging cap shell (13) is provided with a main control switch (24), the pins of the main control switch (24) are connected with the lead screw motor (20) and the gear pump (21), and the lead screw motor (20) and the gear pump (21) are powered by a power supply (27) arranged in the packaging cap shell (13).

2. A self-pouring, sealed package lid according to claim 1, wherein: The main control switch (24) is a six-pin self-locking button switch, and the six pins are respectively a first pin (1), a second pin (2), a third pin (3), a fourth pin (4), a fifth pin (5) and a sixth pin (6); the first button switch is provided with a seventh contact (7) and an eighth contact (8), and the second button switch is provided with a ninth contact (9). The first pin (1) is connected with the positive pole of the power supply (27), the second pin (2) is connected with the positive pole of the lead screw motor (20), the negative pole of the lead screw motor (20) is connected with the fifth pin (5), the third pin is connected with the negative pole of the power supply (27); when the main control switch (24) is pressed, the second pin (2) is connected with the first pin (1), and the fifth pin (5) is connected with the fourth pin (4); when the main control switch (24) is released, the second pin (2) is connected with the third pin (3), and the fifth pin (5) is connected with the sixth pin (6); the ninth contact (9) of the second button switch (26) is connected between the first pin (1) and the sixth pin (6), the seventh contact (7) of the first button switch (25) is connected between the third pin (3) and the fourth pin (4), the eighth contact (8) of the first button switch (25) is arranged on a circuit between the positive pole of the power supply (27) and the positive pole of the gear pump (21), and the negative pole of the gear pump (21) is connected with the negative pole of the power supply (27).

3. A self-pouring, sealed package lid according to claim 2, wherein: When the first button switch (25) is popped up, the seventh contact (7) is in the on state, and the eighth contact (8) is in the off state; when the second button switch (26) is popped up, the ninth contact (9) is in the on state.

4. A self-pouring, sealed package lid according to claim 1, wherein: The liquid outlet pipe sleeve (12) is provided with a bending part at the liquid outlet (19), and the bending part makes the liquid outlet pipe (11) be bound and folded to be self-sealed.

5. A self-pouring, sealed package lid according to claim 4, wherein: The liquid outlet pipe sleeve (12) is made of hard material, the liquid outlet pipe (11) is made of flexible material which can be bent and sealed, and the liquid suction pipe (10) is made of flexible material.

6. A self-piercing, hermetically-sealable package cover according to claim 1, wherein: The end of the liquid suction pipe (10) is connected with the inlet of the gear pump (21), and the outlet of the gear pump (21) is connected with the starting end of the liquid outlet pipe (11).

7. A container employing the self-piercing, sealed package cover of claim 1, wherein: The pipe opening of the liquid suction pipe (10) which extends out of the liquid suction opening (18) is connected with the packaging bag opening (14) of the inner packaging bag (16) through the pagoda adapter (29), the packaging bag opening (14) is provided with a suction pipe (17) inwardly, the free end of the suction pipe (17) is deep into the bottom of the inner packaging bag (16), the inner packaging bag (16) is placed in the outer packaging container (15), and the top of the outer packaging container (15) is detachably provided with a self-suction sealing packaging cover.

8. A container employing a self-piercing, sealing package lid as defined in claim 7, wherein: One end of the pagoda adapter (29) is inserted into the liquid suction pipe (10), the other end of the pagoda adapter (29) is inserted into the suction pipe (17), and the part of the suction pipe (17) which is inserted into the pagoda adapter (29) is tightly attached to the inner wall of the packaging bag opening (14).

9. A container employing a self-piercing, sealing package lid as defined in claim 7, wherein: The outer packaging container (15) is made of hard material.

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