Granular food preservation device

Abstract

This utility model discloses a granular food preservation device, which includes a preservation chamber, a conveying unit, and a door unit. The conveying unit is sealed and installed at the bottom of the preservation chamber, and the inlet of the conveying unit is connected to the bottom channel of the preservation chamber. The door unit includes a flexible sealing frame, a door drive unit, and a door assembly. The sealing frame has a frame channel and is sealed and installed on the conveying unit. The frame channel of the sealing frame is connected to the outlet of the conveying unit. The door drive unit is installed on the conveying unit. The floating door opens the frame channel of the sealing frame. After the door drive unit drives the door assembly to flip upward, the floating door applies pressure to the sealing frame by covering the frame channel of the sealing frame, thereby closing the frame channel of the sealing frame.

Description

Technical Field

[0001] This utility model relates to a food preservation device, and more particularly to a granular food preservation device. Background Technology

[0002] Commercially available pellet food (such as various types of rice, coffee beans, cat food, and dog food) is usually packaged in large-capacity bags, such as 5 kg or 10 kg bags. After the bags are opened, these pellet foods can easily become contaminated with bacteria, rice weevils, or spoil due to prolonged exposure to air. Therefore, to avoid these problems, after the bags are opened, these pellet foods usually need to be stored in a special container to isolate them from the air and keep them fresh. Currently, the containers specifically used for storing these pellet foods are plastic boxes, which consist of a box body and a lid. The box body provides a cavity for storing the pellet food, and the lid is placed on the box body to seal the cavity. When it is necessary to take out the pellet food stored in the box cavity, the lid needs to be opened, the food taken out, and then the lid needs to be closed again. Understandably, once the lid is opened, the air inside the box exchanges with the outside air, allowing humid air to enter. Prolonged contact with granular food in this humid environment can easily lead to bacterial growth, rice weevils, or spoilage. In other words, existing plastic boxes cannot provide effective preservation for granular food. Utility Model Content

[0003] One objective of this invention is to provide a granular food preservation device, wherein the granular food preservation device can effectively isolate the granular food stored in the preservation chamber of the preservation compartment from the air, so as to facilitate the long-term preservation of the granular food.

[0004] One objective of this invention is to provide a granular food preservation device, wherein after the granular food stored in the preservation chamber of the preservation compartment is taken out, the air in the preservation chamber of the preservation compartment can be extracted to form a negative pressure environment in the preservation chamber of the preservation compartment, thereby facilitating the long-term preservation of the granular food.

[0005] One objective of this invention is to provide a granular food preservation device, wherein after the granular food stored in the preservation chamber of the preservation compartment is taken out, the door unit of the granular food preservation device can effectively seal the discharge port of the conveying unit to prevent air from entering the preservation chamber of the preservation compartment through the discharge port of the conveying unit, thereby enabling the granular food preservation device to effectively isolate the granular food stored in the preservation chamber of the preservation compartment from the air.

[0006] One objective of this invention is to provide a granular food preservation device, wherein the conveying unit can avoid crushing the granular food during the conveying process, thereby ensuring the integrity of the granular food during the conveying process and avoiding noise and crushing of the granular food.

[0007] One objective of this invention is to provide a pellet food preservation device, wherein the pellet food preservation device allows the user to set the discharge amount and ensures that the amount of discharged pellet food matches the set discharge amount by controlling the opening time of the door unit and the rotation time of the screw driven by the conveying driver of the conveying unit.

[0008] According to one aspect of the present invention, the present invention provides a granular food preservation device, which includes:

[0009] A preservation compartment, wherein the preservation compartment has a preservation cavity and a bottom channel communicating with the preservation cavity; and

[0010] The conveying assembly further includes:

[0011] A conveying unit, wherein the conveying unit has an inlet and an outlet, the conveying unit is sealed and installed at the bottom of the preservation compartment, and the inlet of the conveying unit is connected to the bottom channel of the preservation compartment; and

[0012] A door unit, wherein the door unit includes a flexible sealing frame, a door drive unit, and a door assembly, wherein the sealing frame has a frame channel, the sealing frame is sealed and mounted on the conveying unit, the frame channel of the sealing frame is connected to the discharge port of the conveying unit, wherein the door drive unit is mounted on the conveying unit, wherein the door assembly includes a pressure plate, a floating door, and an elastic element disposed between the pressure plate and the floating door, one side of the pressure plate is drivably mounted on the output shaft of the door drive unit, wherein after the door drive unit drives the door assembly to flip downward, the floating door opens the frame channel of the sealing frame, and after the door drive unit drives the door assembly to flip upward, the floating door applies pressure to the sealing frame in such a way as to cover the frame channel of the sealing frame, thereby closing the frame channel of the sealing frame.

[0013] According to one embodiment of the present invention, the door pressing panel has a door panel through hole, the floating door has a hook arm, and the end of the hook arm of the floating door passes through the door panel through hole of the door pressing panel and hooks the edge of the door panel through hole.

[0014] According to one embodiment of the present invention, the door pressing plate has a guide hole, the floating door has a guide post, the guide post of the floating door is movably inserted into the guide hole of the door pressing plate, the elastic element is fitted into the guide post, and the opposite ends of the elastic element abut against the door pressing plate and the floating door respectively.

[0015] According to one embodiment of the present invention, the sealing frame has an inclined contact surface that surrounds the frame channel. When the door drive unit drives the door assembly to flip upward, the outer edge of the contact surface of the sealing frame contacts the floating door before the inner edge.

[0016] According to one embodiment of the present invention, the preservation compartment has a gas channel connected to the preservation chamber. The granular food preservation device further includes a main control circuit board and a negative pressure component. The negative pressure component includes a negative pressure pump, a solenoid valve, and a three-way pipe. The negative pressure pump, the solenoid valve, and the door drive are respectively connected to the main control circuit board. The three ports of the three-way pipe are respectively connected to the gas channel of the preservation compartment, the pump body inlet of the negative pressure pump, and the valve body outlet of the solenoid valve.

[0017] According to one embodiment of the present invention, the preservation compartment has a gas channel connected to the preservation chamber. The granular food preservation device further includes a main control circuit board and a negative pressure component. The negative pressure component includes a negative pressure pump and a solenoid valve. The negative pressure pump, the solenoid valve, and the door drive are respectively connected to the main control circuit board. The pump body inlet of the negative pressure pump and the valve body outlet of the solenoid valve are respectively connected to the gas channel of the preservation compartment.

[0018] According to one embodiment of the present invention, the preservation compartment includes a vibration assembly, the vibration assembly includes a vibrator, the vibrator includes a vibration motor and an eccentric wheel mounted on the rotor of the vibration motor, the vibration motor is mounted in the preservation compartment, and when the vibration motor is powered and drives the eccentric wheel to rotate, the eccentric wheel strikes the preservation compartment, causing the preservation compartment to vibrate.

[0019] According to another aspect of the present invention, the present invention further provides a granular food preservation device, which includes:

[0020] A preservation compartment, wherein the preservation compartment has a preservation cavity and a bottom channel communicating with the preservation cavity; and

[0021] A conveying assembly, comprising a conveying unit having an inlet and an outlet, and the conveying unit including a cylinder, a cover, a drive rod, a conveying drive unit, and a screw; the cylinder having a cavity; the inlet of the conveying unit being formed on the upper side of one end of the cylinder; the outlet of the conveying unit being formed on the lower side of the other end of the cylinder; the cylinder being mounted on the bottom of the preservation compartment such that the inlet of the conveying unit communicates with the bottom channel of the preservation compartment; the cover having a cover perforation; and the cover being mounted on the cylinder. One end is used to close the opening of the cavity of the cylinder body. One end of the drive rod is rotatably mounted to one end of the cylinder body. The other end of the drive rod is rotatably mounted to the cylinder cover and extends to the outside through the cylinder cover perforation of the cylinder cover for the output shaft drivably mounted to the conveying drive unit. The screw has elastic pusher blades. The screw is disposed on the drive rod and suspended by the drive rod in the cavity of the cylinder body. The pusher blades of the screw extend helically from the feed port of the conveying unit to the discharge port.

[0022] According to one embodiment of the present invention, the screw has elastic thrust blades, the thrust blades extending in opposite directions to the push blades extending in opposite directions, and the thrust blades and the push blades are respectively located on opposite sides of the discharge port of the conveying unit.

[0023] According to one embodiment of the present invention, the screw is integrally integrated with the drive rod during the molding process.

[0024] According to one embodiment of the present invention, the conveying unit includes a sealing part, the sealing part includes a sealing ring and a sealing cover, the sealing ring is fitted onto the end of the drive rod, the sealing cover has a cover body through hole, the sealing cover is installed on the cylinder cover such that the end of the sealing cover extends into the cover body through hole, the sealing ring is clamped between the cylinder cover and the sealing cover, wherein the conveying drive part is installed on the sealing cover.

[0025] According to one embodiment of the present invention, the conveying assembly includes a door unit, the door unit including a flexible sealing frame, a door drive unit, and a door assembly, wherein the sealing frame has a frame channel, the sealing frame is sealed and installed on the conveying unit, the frame channel of the sealing frame is connected to the discharge port of the conveying unit, wherein the door drive unit is installed on the conveying unit, wherein the door assembly includes a pressure plate, a floating door, and an elastic element disposed between the pressure plate and the floating door, one side of the pressure plate is drivably mounted on the output shaft of the door drive unit, wherein after the door drive unit drives the door assembly to flip downward, the floating door opens the frame channel of the sealing frame, and after the door drive unit drives the door assembly to flip upward, the floating door applies pressure to the sealing frame in such a way as to cover the frame channel of the sealing frame, thereby closing the frame channel of the sealing frame.

[0026] According to one embodiment of the present invention, the conveying assembly includes a gate unit, the gate unit including a gate drive, a valve body, a valve seat, and a valve ball, and the gate unit has a valve cavity. The valve body has a valve body space and an inlet, an outlet, and a shaft hole respectively communicating with the valve body space. The valve seat has a seat hole and is installed at the inlet of the valve body to form the valve cavity between the valve body and the valve seat. The outlet and shaft hole of the valve body and the seat hole of the valve seat are respectively communicating with the valve cavity. The valve ball has a ball channel and is rotatably installed in the valve cavity. The gate drive is installed on the valve body, the output shaft of the gate drive extends into the shaft hole of the valve body, and the valve ball is drivably connected to the gate drive. After the gate drive drives the valve ball to rotate in the valve cavity, the two opposite openings of the ball channel of the valve ball can correspond to or be misaligned with the outlet of the valve body and the seat hole of the valve seat, respectively.

[0027] According to one embodiment of the present invention, the conveying assembly includes a door unit, the door unit includes a door drive unit, a door assembly, and a linkage group. The door assembly includes a fixed door plate and a sliding door plate. The fixed door plate has a fixed door plate hole and a groove communicating with the fixed door plate hole. The fixed door plate is installed on the first tube arm of the cylinder in such a way that the fixed door plate hole communicates with the discharge port of the conveying unit. The sliding door plate has a sliding door plate hole and is slidably installed in the groove of the fixed door plate. The linkage group includes a first rod, a second rod, and a third rod. The opposite ends of the second rod are rotatably installed on one end of the first rod and one end of the third rod, respectively. The other end of the first rod is installed on the output shaft of the door drive unit, and the other end of the third rod is installed on the sliding door plate, or the other end of the third rod and the sliding door plate are integrally formed. Attached Figure Description

[0028] Figure 1 This is a perspective view of a granular food preservation device according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a three-dimensional cross-sectional view of a portion of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0030] Figure 3 This is a perspective view of a partial structure of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0031] Figure 4 This is a perspective view of another partial structure of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0032] Figure 5 This is a three-dimensional cross-sectional view of a position of a partial structure of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0033] Figure 6 yes Figure 5 A magnified view of a local location.

[0034] Figure 7 This is an exploded schematic diagram of a conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0035] Figure 8 This is another exploded schematic diagram of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0036] Figures 9 to 17 These are schematic diagrams illustrating the usage process of the granular food preservation device according to the above-described preferred embodiments of this utility model.

[0037] Figure 18 This is a perspective view of another conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0038] Figure 19 This is an exploded view of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0039] Figure 20 This is a three-dimensional cross-sectional view of a partial location of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0040] Figure 21 This is an enlarged cross-sectional view of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention, showing different states.

[0041] Figure 22 This is a perspective view of another conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0042] Figure 23 This is a three-dimensional cross-sectional view of a partial location of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention.

[0043] Figure 24 This is an enlarged cross-sectional view of the conveying component of the granular food preservation device according to the above-described preferred embodiment of the present invention, showing different states. Detailed Implementation

[0044] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0045] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0046] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 17 A preferred embodiment of the present invention, a pellet food preservation device, will be disclosed and described below. The pellet food preservation device includes a preservation chamber 10 and a conveying assembly 20 installed at the bottom of the preservation chamber 10. The preservation chamber 10 is used to store pellet food, and the conveying assembly 20 is used to convey the pellet food stored in the preservation chamber 10. The type of pellet food is not limited in the pellet food preservation device of the present invention; the pellet food can be, but is not limited to, various types of rice, coffee beans, cat food, and dog food.

[0047] Specifically, the preservation compartment 10 has a preservation cavity 101 and a bottom channel 102 communicating with the preservation cavity 101. The conveying assembly 20 includes a conveying unit 21 and a door unit 22 installed on the conveying unit 21. The conveying unit 21 has an inlet 2101 and an outlet 2102. The conveying unit 21 is installed at the bottom of the preservation compartment 10. The inlet 2101 of the conveying unit 21 is connected to the bottom channel 102 of the preservation compartment 10. For example, the conveying unit 21 is sealed at the bottom of the preservation compartment 10 to prevent air leakage at the assembly position of the conveying unit 21 and the preservation compartment 10. The door unit 22 is configured to open and close the outlet 2102 of the conveying unit 21.

[0048] When the door unit 22 opens the discharge port 2102 of the conveying unit 21, the granular food stored in the preservation chamber 101 of the preservation compartment 10 can enter the conveying unit 21 through the bottom channel 102 of the preservation compartment 10 and the inlet 2101 of the conveying unit 21, and then be discharged through the discharge port 2102 of the conveying unit 21 to realize the conveying of the granular food. When the door unit 22 closes the discharge port 2102 of the conveying unit 21, the door unit 22 can prevent the air of the external environment from entering the conveying unit 21 and the preservation compartment 10, so that the granular food is isolated from the external environment by the granular food preservation device, thereby realizing the long-term preservation of the granular food.

[0049] The conveying unit 21 includes a cylinder 211, a cylinder cover 212, a drive rod 213, a conveying drive unit 214, and a screw 215. The cylinder 211 has a cavity 2111. The feed inlet 2101 of the conveying unit 21 is formed on the upper side of one end of the cylinder 211, and the discharge outlet 2102 of the conveying unit 21 is formed on the lower side of the other end of the cylinder 211. Thus, the feed inlet 2101 and the discharge outlet 2102 of the conveying unit 21 are respectively connected to the cavity 2111 of the cylinder 211. The cylinder 211 is sealed and installed at the bottom of the preservation compartment 10 so that the feed inlet 2101 of the conveying unit 21 is connected to the bottom channel 102 of the preservation compartment 10. The cover 212 has a cover perforation 2121. The cover 212 is installed at one end of the cylinder 211 to close the opening of the cavity 2111 of the cylinder 211. One end of the drive rod 213 is rotatably installed at one end of the cylinder 211, and the other end of the drive rod 213 is rotatably installed at the cover 212. This end of the drive rod 213 extends to the outside through the cover perforation 2121 of the cover 212, and is drivably installed on the first output shaft 2141 of the conveying drive unit 214. For example, the opposite ends of the drive rod 213 are rotatably installed on the cylinder 211 and the cover 212 respectively through bearings 210, so that when the conveying drive unit 214 transmits power in a manner that the first output shaft 2141 rotates, the conveying drive unit 214 can drive the drive rod 213 to rotate smoothly. The screw 215 has a pushing blade 2151. The screw 215 is disposed on the drive rod 213, and the drive rod 213 suspends the screw 215 in the cavity 2111 of the cylinder 211. The pushing blade 2151 of the screw 215 extends spirally from the feed inlet 2101 of the conveying unit 21 to the discharge outlet 2102. After the granular food stored in the preservation chamber 101 of the preservation compartment 10 enters the cavity 2111 of the cylinder 211 through the bottom channel 102 of the preservation compartment 10 and the feed inlet 2101 of the conveying unit 21, the granular food is conveyed to the discharge outlet 2102 of the conveying unit 21 as the conveying drive unit 214 drives the drive rod 213 and the screw 215 to rotate, and is discharged through the discharge outlet 2102 of the conveying unit 21.

[0050] Preferably, the pusher blade 2151 of the screw 215 is elastic. During the process of the screw 215 being driven by the drive rod 213 to rotate within the cylinder cavity 2111 of the cylinder 211 to transport the granular food, if a portion of the granular food gets stuck in the gap between the pusher blade 2151 of the screw 215 and the cylinder 211, the pusher blade 2151 can deform to prevent the pusher blade 2151 and the cylinder 211 from crushing the granular food. Thus, the granular food preservation device can ensure the integrity of the granular food during the transportation process, avoid crushing the granular food into smaller particles or powder, and avoid noise. This helps to ensure the reliability of the granular food preservation device.

[0051] Preferably, the screw 215 can be made of silicone material; for example, food-grade silicone material can be used to make the screw 215, so that the pusher blades 2151 of the screw 215 can be elastic. (See attached...) Figures 1 to 17 In this specific example of the granular food preservation device of the present invention, the screw 215 is integrally coupled to the drive rod 213 during the molding process, thereby setting the screw 215 to the drive rod 213. It is understood that, to ensure the bonding strength between the screw 215 and the drive rod 213, the drive rod 213 may be provided with multiple radial grooves and multiple longitudinal grooves. During the molding process, the screw 215 forms portions protruding into each of the radial and longitudinal grooves of the drive rod 213. These portions can prevent the screw 215 from moving relative to the drive rod 213 in the circumferential direction, and also prevent the screw 215 from moving relative to the drive rod 213 in the radial direction.

[0052] Furthermore, the screw 215 has a reverse thrust blade 2152, the extension direction of which is opposite to that of the pusher blade 2151. The pusher blade 2151 and the reverse thrust blade 2152 are located on opposite sides of the discharge port 2102 of the conveying unit 21. During the process of the screw 215 being driven by the drive rod 213 to rotate within the cylinder cavity 2111 of the cylinder 211 to convey the granular food, when the granular food is conveyed to the discharge port 2102 of the conveying unit 21 by the pusher blade 2151 of the screw 215, the reverse thrust blade 2152 can push the granular food in the opposite direction to prevent the granular food from continuing to move towards the cylinder cover 212, thereby allowing the granular food to be smoothly discharged through the discharge port 2102 of the conveying unit 21.

[0053] It is understood that the thrust vane 2152 of the screw 215 is elastic to prevent the thrust vane 2152 and the cylinder 211 from crushing the conveyed granular food.

[0054] Furthermore, the conveying unit 21 includes a sealing part 216, which includes a sealing ring 2161 and a sealing cover 2162. The sealing ring 2161 is fitted onto the end of the drive rod 213. The sealing cover 2162 has a cover through hole 21621. The sealing cover 2162 is installed on the cylinder cover 212 such that the end of the drive rod 213 extends into the cover through hole 21621. The sealing ring 2161 is clamped between the cylinder cover 212 and the sealing cover 2162 to prevent air leakage at the joint of the drive rod 213, the cylinder cover 212 and the sealing cover 2162.

[0055] It is worth mentioning that the sealing cap 2162 is installed on the cylindrical cover 212 and the cylindrical cover 212 is installed on the cylindrical body 211 in the following specific ways: multiple screw holes are provided on the sealing cap 2162 and the cylindrical cover 212 respectively, and a threaded blind hole is provided on the cylindrical body 211. The threaded ends of the multiple screws extend to the threaded blind hole of the cylindrical body 211 after passing through the screw holes of the sealing cap 2162 and the screw holes of the cylindrical cover 212 respectively, and are screwed onto the cylindrical body 211. Thus, the cylindrical cover 212 is reliably installed on the cylindrical body 211 and the sealing cap 2162 is reliably installed on the cylindrical cover 212.

[0056] It is understood that, in order to ensure the sealing of the joint between the cap 212 and the cylinder 211, the conveying unit 21 allows a sealing ring 100 to be clamped between the cap 212 and the cylinder 211.

[0057] The conveying drive unit 214 is mounted on the sealing cover 2162. For example, a screw can be used to mount the conveying drive unit 214 on the sealing cover 2162. The first output shaft 2141 of the conveying drive unit 214 extends into the cover body through hole 21621 of the sealing cover 2162 and is mounted on the drive rod 213, such that the end of the drive rod 213 extending into the cover body through hole 21621 of the sealing cover 2162 is drivably connected to the drive rod 213. Specifically, the drive rod 213 has a non-circular insertion slot 2131. The shape and size of the end of the first output shaft 2141 of the conveying drive unit 214 match the shape and size of the insertion slot 2131 of the drive rod 213. The end of the first output shaft 2141 of the conveying drive unit 214 is inserted into the insertion slot 2131 of the drive rod 213, so that the drive rod 213 is drivably connected to the first output shaft 2141 of the conveying drive unit 214.

[0058] Furthermore, the conveying unit 21 includes a retaining ring 217, the inner side of which is snapped into the drive rod 213, and the outer side of which abuts against the bearing 210. The retaining ring 217 can prevent the drive rod 213 from moving within the cylinder cavity 2111 of the cylinder 211, thereby ensuring the reliability of the conveying assembly 20.

[0059] Continue to refer to the appendix Figures 2 to 8 The door unit 22 includes a flexible sealing frame 221, a door drive unit 222, and a door assembly 223.

[0060] The sealing frame 221 has a frame channel 2211. The sealing frame 221 is sealed and installed on the cylinder 211 of the conveying unit 21. The frame channel 2211 of the sealing frame 221 is connected to the discharge port 2102 of the conveying unit 21. Specifically, the cylinder 211 has a first tube arm 2112, which forms the discharge port 2102 of the conveying unit 21. The sealing frame 221 is fitted onto the first tube arm 2112 to install the sealing frame 221 on the cylinder 211.

[0061] Preferably, the sealing frame 221 and the first tube arm 2112 of the cylinder 211 are interlocked to reliably install the sealing frame 221 onto the first tube arm 2112 of the cylinder 211, preventing the sealing frame 221 from falling off the first tube arm 2112. Furthermore, the contact surfaces of the sealing frame 221 and the first tube arm 2112 are folded surfaces to increase the sealing performance of the sealing frame 221 and the first tube arm 2112, thereby ensuring that the sealing frame 221 is sealed and installed in the cylinder 211. By fitting the sealing frame 221 onto the first tube arm 2112 of the cylinder 211, the inner wall of the sealing frame 221 does not protrude from the inner wall of the cylinder 211 used to define the discharge port 2102. Thus, the granular food preservation device can prevent the granular food from accumulating at the discharge port 2102 of the conveying unit 21.

[0062] It is worth mentioning that the shape of the sealing frame 221 and the shape of the first tube arm 2112 of the cylinder 211 are not limited in the granular food preservation device of this utility model, as long as they cooperate with each other. For example, in the attached Figures 1 to 17 In this specific example of the granular food preservation device of the present invention, the first tube arm 2112 of the cylinder 211 can be a square tube, and correspondingly, the sealing frame 221 can be a square frame, and the two are matched in size, so that after the sealing frame 221 is fitted onto the first tube arm 2112, the conveying unit 21 can prevent the formation of a gap between the sealing frame 221 and the first tube arm 2112.

[0063] The door drive unit 222 is mounted on the cylinder 211 of the conveying unit 21, and the door drive unit 222 has a second output shaft 2221. Specifically, the cylinder 211 has an extension arm 2113, and a screw can be used to mount the door drive unit 222 onto the extension arm 2113 of the cylinder 211.

[0064] The door assembly 223 includes a door pressing plate 2231, a floating door 2232, and at least one elastic element 2233. The elastic element 2233 is disposed between the door pressing plate 2231 and the floating door 2232, such that the floating door 2232 is floatingly held on one side of the door pressing plate 2231. The door pressing plate 2231 is drivably mounted on the second output shaft 2221 of the door drive unit 222. When the door drive unit 222 outputs power by rotating the second output shaft 2221, the door drive unit 223... 22 is used to drive the door assembly 223 to flip downward or upward, wherein after the door drive unit 222 drives the door assembly 223 to flip downward, the floating door 2232 opens the frame channel 2211 of the sealing frame 221, and after the door drive unit 222 drives the door assembly 223 to flip upward, the floating door 2232 applies pressure to the sealing frame 221 in such a way as to cover the frame channel 2211 of the sealing frame 221, thereby closing the frame channel 2211 of the sealing frame 221.

[0065] The pressure plate 2231 has two spaced-apart arms 22311 on one side and a clearance groove 22312 between the two arms 22311. Each arm 22311 has a first arm hole 223111 and a second arm hole 223112 communicating with the first arm hole 223111. The extension arm 2113 of the cylinder 211 has a pair of arm through holes 21131. The two arms 22311 of the pressure plate 2231 are located on opposite sides of the extension arm 2113 of the cylinder 211, and the positions of the first arm holes 223111 of the two arms 22311 correspond one-to-one with the two arm through holes 21131 of the extension arm 2113. The clearance groove 22312 of the pressure plate 2231 is used to avoid the extension arm 2113 of the cylinder 211. The second output shaft 2221 of the door drive unit 222 has a pair of shaft through holes 22211. The second output shaft 2221 of the door drive unit 222 passes through the first arm hole 223111 of each of the arm 22311 of the door pressure plate 2231 and the arm through hole 21131 of each of the extension arm 2113 of the cylinder 211. The shaft through holes 22211 of the second output shaft 2221 and the second arm holes 223112 of each of the arm 22311 of the door pressure plate 2231 correspond one-to-one. The door unit 22 further includes a pair of pins 224. Each pin 224 is inserted into the shaft through hole 22211 of the second output shaft 2221 and the second arm hole 223112 of each of the arm 22311 of the door pressure plate 2231. With the above structure, the door pressure plate 2231 is drivably mounted on the second output shaft 2221 of the door drive unit 222.

[0066] Reference Appendix Figure 4 and Figure 8 The door panel 2231 has at least one door panel through hole 22312, and the floating door 2232 has at least one hook arm 22321. The end of the hook arm 22321 of the floating door 2232 passes through the door panel through hole 22312 of the door panel 2231 and hooks the edge of the door panel through hole 22312. In this way, the floating door 2232 is reliably suspended on one side of the door panel 2231, preventing the floating door 2232 and the door panel 2231 from detaching from each other.

[0067] In the appendix Figures 1 to 17In this specific example of the granular food preservation device of the present invention, the number of door panel perforations 22312 of the pressure door plate 2231 is four, which are respectively provided at the four corners of the pressure door plate 2231. Correspondingly, the number of hook arms 22321 of the floating door 2232 is four, which are respectively provided at the four corners of the floating door 2232. The ends of the four hook arms 22321 of the floating door 2232 pass through the four door panel perforations 22312 of the pressure door plate 2231 and hook the edge of the door panel perforation 22312. In this way, the floating door 2232 is reliably suspended on one side of the pressure door plate 2231, preventing the floating door 2232 and the pressure door plate 2231 from detaching from each other.

[0068] Reference Appendix Figure 8 The door pressure plate 2231 has at least one guide hole 22313, and the floating door 2232 has at least one guide post 22322. The guide post 22322 of the floating door 2232 is movably inserted into the guide hole 22313 of the door pressure plate 2231. The elastic element 2233 is fitted onto the guide post 22322, and the opposite ends of the elastic element 2233 abut against the door pressure plate 2231 and the floating door 2232, respectively. Thus, the elastic element 2233 is reliably disposed between the door pressure plate 2231 and the floating door 2232.

[0069] In the appendix Figures 1 to 17 In this specific example of the granular food preservation device of the present invention, the number of guide holes 22313 of the pressure door plate 2231 is four, which are respectively arranged adjacent to each of the door plate holes 22312. Correspondingly, the number of guide posts 22322 of the floating door 2232 is four, which are respectively arranged adjacent to the hook arm 22321. The four guide posts 22322 of the floating door 2232 are respectively movably inserted into the four guide holes 22313 of the pressure door plate 2231. It can be understood that the number of elastic elements 2233 is also four, and the four elastic elements 2233 are respectively fitted into the four guide posts 22322 of the floating door 2232. In this way, after the door drive unit 222 drives the door assembly 223 to flip upward, the various positions of the floating door 2232 can be evenly stressed.

[0070] Preferably, the contact surface 2212 of the sealing frame 221 surrounding the opening of the frame channel 2211 is an inclined surface. When the door drive unit 222 drives the door assembly 223 to flip upward, the floating door 2232 first contacts the outer edge of the contact surface 2212 of the sealing frame 221. As the floating door 2232 deforms the contact surface 2212 of the sealing frame 221, the contact area between the floating door 2232 and the contact surface 2212 of the sealing frame 221 gradually increases.

[0071] Continue to refer to the appendix Figures 1 to 6 The preservation compartment 10 includes a compartment body 11 and a cover 12. The compartment body 11 has a cavity 111, and the bottom of the compartment body 11 is funnel-shaped. The bottom channel 102 of the preservation compartment 10 is formed at the bottom of the compartment body 11. The cover 12 is detachably installed on the top of the compartment body 11 to close the opening of the cavity 111, so that the cavity 111 of the compartment body 11 forms the preservation cavity 101 of the preservation compartment 10. The cylinder 211 has a second tube arm 2114, which forms the feed inlet 2101 of the conveying unit 21. The second tube arm 2114 is sealed to the bottom of the compartment body 11. For example, a screw can be used to install the second tube arm 2114 to the bottom of the compartment body 11. Preferably, a sealing ring 100 is clamped between the second tube arm 2114 and the cabin 11 to increase the sealing of the assembly position of the second tube arm 2114 and the cabin 11.

[0072] Continue to refer to the appendix Figure 1 and Figure 2 The granular food preservation device further includes an outer shell assembly 30, which includes a cover 31 and a bottom cover 32. The cover 31 has a cover cavity 311, a material receiving cavity 312 with an outer opening, and a material receiving channel 313 communicating with the cover cavity 311 and the material receiving cavity 312. The bottom cover 32 is installed at the bottom of the cover 31 to close the bottom opening of the cover cavity 311 of the cover 31. The chamber 11 and the conveying assembly 20 are respectively installed in the cover cavity 311 of the cover 31, and the door unit 22 is suspended directly above the material intake channel 313 of the cover 31. In this way, after the door unit 22 is connected to the discharge port 2102 of the conveying unit 21, the granular food discharged through the discharge port 2102 of the conveying unit 21 can enter the material intake cavity 312 from top to bottom through the material intake channel 313 of the cover 31.

[0073] Preferably, the granular food preservation device further includes a receiving cup 40, which is detachably disposed in the feeding chamber 312 of the cover 31. When the receiving cup 40 is in the feeding chamber 312 of the cover 31, the granular food entering the feeding chamber 312 through the feeding channel 313 of the cover 31 will be received by the receiving cup 40.

[0074] Continue to refer to the appendix Figure 2 and Figure 5 The preservation chamber 10 has a gas channel 112 in its body 11, which connects the chamber 111 to the external environment. The granular food preservation device of this utility model further includes a main control circuit board 50 and a negative pressure component 60. The negative pressure component 60 includes a negative pressure pump 61, a solenoid valve 62, and a three-way pipe 63. The negative pressure pump 61 and the solenoid valve 62 are respectively connected to the main control circuit board 50, and the main control circuit board 50 controls the working state of the negative pressure pump 61 and the solenoid valve 62. The three ports of the three-way pipe 63 are respectively connected to the gas channel 112 of the chamber 11, the pump body inlet of the negative pressure pump 61, and the valve body outlet of the solenoid valve 62. After the door unit 22 closes the discharge port 2102 of the conveying unit 21, the main control circuit board 50 allows the negative pressure pump 61 to be energized and prevents the solenoid valve 62 from being energized. At this time, the negative pressure pump 61 extracts the air from the chamber 111 of the chamber 11 through the three-way pipe 63, so that the chamber 111 of the chamber 11 is in a negative pressure state. Alternatively, the main control circuit board 50 prevents the negative pressure pump 61 from being energized and allows the solenoid valve 62 to be energized. At this time, the solenoid valve 62 depressurizes the chamber 111 of the chamber 11 through the three-way pipe 63, so that the chamber 111 of the chamber 11 forms a normal pressure state.

[0075] Optionally, in other examples of the granular food preservation device of this utility model, the air inlet of the negative pressure pump 61 of the negative pressure component 60 can be directly connected to one of the gas channels 112 of the preservation chamber 10, and the air outlet of the solenoid valve 62 can be directly connected to another gas channel 112 of the preservation chamber 10. Thus, after the door unit 22 closes the discharge port 2102 of the conveying unit 21, the main control circuit board 50 allows the negative pressure pump 61 to be energized and prevents the solenoid valve 62 from being energized. The negative pressure pump 61 extracts the air from the chamber 111 of the chamber 11, making the chamber 111 of the chamber 11 a negative pressure state. Alternatively, the main control circuit board 50 prevents the negative pressure pump 61 from being energized and allows the solenoid valve 62 to be energized. The solenoid valve 62 allows the chamber 111 of the chamber 11 to depressurize, making the chamber 111 of the chamber 111 a normal pressure state.

[0076] It is understandable that, since the feed inlet 2101 of the conveying unit 21 is connected to the chamber 111 of the cabin body 11, the air in the chamber 111 of the cabin body 11 and the air in the chamber 2111 of the cylinder body 211 are both extracted. At this time, the chamber 111 of the cabin body 11 and the chamber 2111 of the cylinder body 211 are both in a negative pressure state, which makes the preservation chamber 101 of the preservation chamber 10 in a negative pressure state. Because the sealing ring 2161 of the sealing part 216 prevents air leakage at the joint of the drive rod 213, the cylinder cover 212 and the sealing cover 2162, and because the floating door 2232 closes the frame channel 2211 of the sealing frame 221, the negative pressure pump 61 extracts the air from the chamber 111 of the cabin 11 and the cylinder 2111 of the cylinder 211, thereby causing the chamber 111 of the cabin 11 and the cylinder 2111 of the cylinder 211 to be exposed. Once a negative pressure state is formed, even if the negative pressure pump 61 stops working, the chamber 111 of the compartment 11 and the cylinder 2111 of the cylinder 211 can still maintain a negative pressure state for a long time, thereby enabling the preservation chamber 101 of the preservation compartment 10 to maintain a negative pressure state for a long time, and thus enabling the granular food preservation device of this utility model to preserve the granular food stored in the preservation chamber 101 of the preservation compartment 10 for a long time.

[0077] It is worth mentioning that in the granular food preservation device of this utility model, the sealing frame 221 can be slightly deformed, and the floating door 2232 can float. Therefore, the greater the negative pressure of the chamber 111 of the chamber 11 and the cylinder 2111 of the cylinder 211, the more tightly the floating door 2232 fits against the sealing frame 221. Correspondingly, the discharge port 2102 of the conveying unit 21 is less likely to leak air, so that the door unit 22 can reliably close the discharge port 2102 of the conveying unit 21.

[0078] The conveying drive unit 214 of the conveying unit 21 and the door drive unit 222 of the door unit 22 are both connected to the main control circuit board 50, and the main control circuit board 50 controls the working state of the conveying drive unit 214 and the door drive unit 222.

[0079] Further, see attached document. Figure 2 and Figure 5 The chamber 11 has a receiving groove 113 extending downward from the bottom of the chamber cavity 111. The gas passage 112 communicates with the receiving groove 113. The preservation chamber 10 further includes a filter element 13, which is breathable, and the filter element 13 is received in the receiving groove 113 of the chamber 11. In the granular food preservation device of this utility model, the filter element 13 can be a sponge. When the main control circuit board 50 allows the negative pressure pump 61 to be energized to draw negative pressure into the chamber cavity 111 of the chamber 11 and the cylinder cavity 2111 of the cylinder 211, the filter element 13 can prevent the granular food stored in the chamber cavity 111 of the preservation chamber 10 from passing through the gas passage 112 of the chamber 11, so that the granular food will not enter the negative pressure pump 61, thereby protecting the negative pressure pump 61 and improving the reliability and stability of the granular food preservation device.

[0080] Further, please refer to the appendix. Figure 2 and Figure 5The preservation compartment 10 includes a retainer 14, which has an insert groove 141 and a plurality of vent holes 142 communicating with the insert groove 141. The diameter of these vent holes 142 is smaller than the size of the granular food. The filter element 13 is embedded in the insert groove 141 of the retainer 14, and the retainer 14 is installed in the receiving groove 113 of the compartment body 11, thus the retainer 14 houses the filter element 13 in the receiving groove 113 of the compartment body 11. Preferably, the shape and size of the retainer 14 match the shape and size of the receiving groove 113 of the compartment body 11, so that after the retainer 14 is installed in the receiving groove 113 of the compartment body 11, the retainer 14 will not automatically fall off the receiving groove 113 of the compartment body 11, thereby improving the reliability and stability of the granular food preservation device. Preferably, the retainer 14 can be a silicone part.

[0081] Further, please refer to the appendix. Figure 2 The granular food preservation device includes a vibration assembly 70, which includes a vibrator 71. The vibrator 71 includes a vibration motor 711 and at least one eccentric wheel 712 mounted on the rotor of the vibration motor 711. The vibration motor 711 is mounted at the bottom of the chamber 11 and is connected to the main control circuit board 50. When the main control circuit board 50 allows the vibration motor 711 to be powered, the eccentric wheel 712 vibrates when rotating, causing the chamber 11 to vibrate, thereby ensuring that the granular food stored in the preservation cavity 101 of the preservation chamber 10 passes smoothly through the bottom channel 102 and the feed inlet 2101 of the conveying unit 21.

[0082] It is understandable that the storage volume of the granular food in the preservation chamber 101 of the preservation compartment 10 is different. When the door unit 22 opens the discharge port 2102 of the conveying unit 21 and the conveying drive unit 214 drives the screw 215 to rotate at a constant speed, the speed at which the granular food enters the cylinder cavity 2111 of the cylinder 211 through the bottom channel 102 of the preservation compartment 10 and the inlet 2101 of the conveying unit 21 is also different, which leads to different amounts of granular food being discharged through the discharge port 2102 of the conveying unit 21 per unit time. Specifically, when the door unit 22 opens the discharge port 2102 of the conveying unit 21 and the conveying drive unit 214 drives the screw 215 to rotate at a constant speed, the more granular food stored in the preservation chamber 101 of the preservation compartment 10, the more granular food is discharged through the discharge port 2102 of the conveying unit 21; conversely, the less granular food stored in the preservation chamber 101 of the preservation compartment 10, the less granular food is discharged through the discharge port 2102 of the conveying unit 21. Therefore, during the operation of the granular food preservation device, by vibrating the preservation compartment 10 through the vibrator 71, regardless of the amount of granular food stored in the preservation chamber 101 of the preservation compartment 10, the speed at which the granular food is discharged through the discharge port 2102 of the conveying unit 21 per unit time is basically consistent, avoiding errors in the amount of granular food discharged due to differences in the amount of granular food stored.

[0083] The vibration assembly 70 further includes an assembly plate 72, with its opposite ends respectively mounted to the bottom of the chamber 11. The vibration motor 711 is clamped between the assembly plate 72 and the chamber 11 to mount the vibration motor 711 to the bottom of the chamber 11. In a specific example of the granular food preservation device of this utility model, the opposite ends of the assembly plate 72 are respectively locked to the bottom of the chamber 11 by screws.

[0084] Continue to refer to the appendix Figure 2The granular food preservation device further includes a battery 80, a charging port 90, and at least one control switch 100. The battery 80 and the charging port 90 are disposed on the bottom cover 32, and the control switch 100 is disposed on the housing 31. The battery 80, the charging port 90, and the control switch 100 are respectively connected to the main control circuit board 50. The main control circuit board 50 allows external power to be supplied to the battery 80 through the charging port 90. When the user operates the control switch 100, the main control circuit board 50 allows power to be supplied to the conveying drive unit 214 of the conveying unit 21, the door drive unit 222 of the door unit 22, the negative pressure pump 61, or the solenoid valve 62.

[0085] Continue to refer to the appendix Figure 1 and Figure 2 The granular food preservation device further includes a display unit 110, which is disposed on the housing 31 and connected to the main control circuit board 50. When the main control circuit board 50 allows power to be supplied to the display unit 110, the display unit 110 is used to display the working status of the granular food preservation device.

[0086] Users can preset the output volume of the granular food preservation device (i.e., the amount of granular food discharged through the discharge port 2102 of the conveying unit 21) using the control switch 100. For example, users can set the output volume of the granular food preservation device to 200g, meaning that 200g of granular food will be discharged through the discharge port 2102 of the conveying unit 21 in a single operation. In this case, the number 200g can be displayed on the display unit 110 for easy viewing by the user. Users can also increase or decrease the output volume using the control switch 100. For example, users can increase the output volume using the control switch 100 marked with "+", increasing the output volume by 10g each time the control switch 100 is pressed. Conversely, users can decrease the output volume using the control switch 100 marked with "-", decreasing the output volume by 10g each time the control switch 100 is pressed. After the feed rate of the pellet food preservation device is preset, the user can start the pellet food preservation device through the control switch 100 marked "feed" to obtain the corresponding weight of pellet food.

[0087] Appendix Figures 9 to 17The following describes the operation of the granular food preservation device of this invention. The user starts the granular food preservation device via the control switch 100. First, the solenoid valve 62 is energized to depressurize the preservation chamber 101 of the preservation compartment 10 and the cylindrical cavity 2111 of the cylinder 211, restoring them to normal pressure. Second, the door drive unit 222 is energized, allowing it to drive the door assembly 223 downwards to open the frame channel 2211 of the sealing frame 221, thereby opening the discharge port 2102 of the conveying unit 21. Third, the conveying drive unit 214 is energized, allowing the drive rod 213 to drive the screw 215 through the cylinder 21. As the screw 215 rotates within the cavity 2111 of the cylinder 10, the granular food entering the cavity 2111 of the cylinder 211 through the bottom channel 102 of the preservation chamber 10 and the inlet 2101 of the conveying unit 21 is conveyed to the outlet 2102 of the conveying unit 21, and then enters the receiving cup 40 from top to bottom through the outlet 2102 of the conveying unit 21 and the material picking channel 313 of the cover 31. During this process, the vibration motor 711 can be powered to vibrate the eccentric wheel 712, so that the preservation chamber 10 vibrates and the granular food smoothly passes through the bottom channel 102 and the inlet 2101 of the conveying unit 21. The main control circuit board 50 can control the opening and closing time of the door unit 22 and the working time of the conveying drive unit 214 according to the user's preset discharge amount, so as to ensure that the amount of granular food discharged through the discharge port 2102 of the conveying unit 21 is consistent with the user's preset discharge amount. In this process, the granular food preservation device does not need to weigh the granular food discharged through the discharge port 2102 of the conveying unit 21. When the user closes the granular food preservation device via the control switch 100, firstly, the door drive unit 222 is energized, allowing it to drive the door assembly 223 to flip upwards, causing the floating door 2232 to press against the sealing frame 221 by covering the frame channel 2211 of the sealing frame 221, thereby closing the frame channel 2211 of the sealing frame 221. Secondly, the negative pressure pump 61 is energized to extract the air from the preservation chamber 101 of the preservation compartment 10 and the cylindrical cavity 2111 of the cylinder 211, causing the preservation chamber 101 and the cylindrical cavity 2111 of the cylinder 211 to be in a negative pressure state.

[0088] Appendix Figures 18 to 21 Another conveying component 20 of the granular food conveying device of this invention is shown, along with an attached... Figures 1 to 17 The conveying assembly 20 of the granular food conveying device shown differs from that of the attached... Figures 18 to 21 In this specific example of the granular food conveying device of the present invention, the gate unit 22 of the conveying assembly 20 includes a gate drive unit 222, a valve body 225, a valve seat 226, and a valve ball 227. The gate unit 22 has a valve cavity 228. The valve body 225 has a valve body space 2251 and an inlet 2252, an outlet 2253, and a shaft hole 2254 respectively communicating with the valve body space 2251. The valve seat 226 has a hole 2261. The valve seat 226 is installed at the inlet 2252 of the valve body 225 to form the valve cavity 228 of the gate unit 22 between the valve body 225 and the valve seat 226. The outlet 2253 and the shaft hole 2254 of the valve body 225 are also connected. 54 and the seat hole 2261 of the valve seat 226 are respectively connected to the valve cavity 228. The valve ball 227 is rotatably mounted in the valve cavity 228. The door drive part 222 is mounted on the valve body 225. The second output shaft 2221 of the door drive part 222 extends into the shaft hole 2254 of the valve body 225. The valve ball 227 is drivably connected to the second output shaft 2221 of the door drive part 222. The door drive part 222 drives the valve ball 227 to rotate in the valve cavity 228. The valve body 225 is mounted on the first tube arm 2112 of the cylinder 211 in such a way that the seat hole 2261 of the valve seat 226 is connected to the discharge port 2102 of the conveying unit 21.

[0089] When the door drive unit 222 drives the valve ball 227 to rotate within the valve cavity 228 until the two opposite openings of the ball channel 2271 correspond to the outlet 2253 of the valve body 225 and the seat hole 2261 of the valve seat 226, respectively, the door unit 22 opens the discharge port 2102 of the conveying unit 21. When the door drive unit 222 drives the valve ball 227 to rotate within the valve cavity 228 until the two opposite openings of the ball channel 2271 are misaligned with the outlet 2253 of the valve body 225 and the seat hole 2261 of the valve seat 226, respectively, the door unit 22 closes the discharge port 2102 of the conveying unit 21.

[0090] Preferably, the valve ball 227 has a non-circular notch 2272, the position of the notch 2272 of the valve ball 227 corresponds to the position of the shaft hole 2254 of the valve body 225, the size and shape of the end of the second output shaft 2221 of the door drive unit 222 matches the size and shape of the notch 2272 of the valve ball 227, and the end of the second output shaft 2221 of the door drive unit 222 extends into the notch 2272 of the ball valve 227, so that the valve ball 227 is drivably connected to the second output shaft 2221 of the door drive unit 222.

[0091] Appendix Figures 22 to 24 Another conveying component 20 of the granular food conveying device of this invention is shown, along with an attached... Figures 1 to 17 The conveying assembly 20 of the granular food conveying device shown differs from that of the attached... Figures 22 to 24 In this specific example of the granular food conveying device of the present invention, the door unit 22 of the conveying assembly 20 includes the door drive unit 222, the door assembly 223, and a linkage group 229. The door assembly 223 includes a fixed door plate 2234 and a sliding door plate 2235. The fixed door plate 2234 has a fixed door plate hole 22341 and a sliding groove 22342 communicating with the fixed door plate hole 22341. The fixed door plate 2234 is installed on the first tube arm 2112 of the cylinder 211 in such a way that the fixed door plate hole 22341 communicates with the discharge port 2102 of the conveying unit 21. The sliding door... The plate 2235 has a sliding door panel hole 22351. The sliding door panel 2235 is slidably mounted in the slide groove 22342 of the fixed door panel 2234. The linkage assembly 229 includes a first rod 2291, a second rod 2292, and a third rod 2293. The opposite ends of the second rod 2292 are rotatably mounted to one end of the first rod 2291 and one end of the third rod 2293, respectively. The other end of the first rod 2291 is mounted to the second output shaft 2221 of the door drive unit 222, and the other end of the third rod 2293 is mounted to the sliding door panel 2235. It is understood that the position of the door drive unit 222 remains stationary relative to the position of the fixed door panel 2234. Preferably, the third rod 2293 and the sliding door panel 2235 can be integrally formed.

[0092] When the second output shaft 2221 of the door drive unit 222 rotates, the first rod 2291, the second rod 2292, and the third rod 2293 of the linkage group 229 cooperate to push and pull the sliding door panel 2235 to slide within the slide groove 22342 of the fixed door panel 2234. When the sliding door panel 2235 slides to the point where the sliding door panel hole 22351 of the sliding door panel 2235 corresponds to the fixed door panel hole 22341 of the fixed door panel 2234, the door unit 22 opens the discharge port 2102 of the conveying unit 21. When the sliding door panel 2235 slides to the point where the sliding door panel hole 22351 of the sliding door panel 2235 and the fixed door panel hole 22341 of the fixed door panel 2234 are misaligned, the door unit 22 closes the discharge port 2102 of the conveying unit 21.

[0093] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A granular food preservation device, characterized by, include: A preservation compartment, wherein the preservation compartment has a preservation cavity and a bottom channel communicating with the preservation cavity; and The conveying assembly further includes: A conveying unit, wherein the conveying unit has an inlet and an outlet, the conveying unit is sealed and installed at the bottom of the preservation compartment, and the inlet of the conveying unit is connected to the bottom channel of the preservation compartment; and A door unit, wherein the door unit includes a flexible sealing frame, a door drive unit, and a door assembly, wherein the sealing frame has a frame channel, the sealing frame is sealed and mounted on the conveying unit, the frame channel of the sealing frame is connected to the discharge port of the conveying unit, wherein the door drive unit is mounted on the conveying unit, wherein the door assembly includes a pressure plate, a floating door, and an elastic element disposed between the pressure plate and the floating door, one side of the pressure plate is drivably mounted on the output shaft of the door drive unit, wherein after the door drive unit drives the door assembly to flip downward, the floating door opens the frame channel of the sealing frame, and after the door drive unit drives the door assembly to flip upward, the floating door applies pressure to the sealing frame in such a way as to cover the frame channel of the sealing frame, thereby closing the frame channel of the sealing frame.

2. The granular food preservation device according to claim 1, wherein the pressing door plate has a door plate through-hole, the floating door has a hook arm, and the end of the hook arm of the floating door passes through the door plate through-hole of the pressing door plate and hooks the edge of the door plate through-hole.

3. The granular food preservation device according to claim 1, wherein the pressure door plate has a guide perforation, the floating door has a guide post, the guide post of the floating door is movably inserted into the guide perforation of the pressure door plate, the elastic element is fitted onto the guide post, and the opposite ends of the elastic element abut against the pressure door plate and the floating door respectively.

4. The granular food preservation device according to claim 1, wherein the sealing frame has an inclined contact surface, the contact surface surrounding the frame channel, and when the door drive unit drives the door assembly to flip upward, the outer edge of the contact surface of the sealing frame contacts the floating door before the inner edge.

5. The pellet food preservation device according to claim 1, wherein the preservation chamber has a gas channel connected to the preservation cavity, wherein the pellet food preservation device further includes a main control circuit board and a negative pressure assembly, the negative pressure assembly including a negative pressure pump, a solenoid valve and a three-way pipe, the negative pressure pump, the solenoid valve and the door drive part are respectively connected to the main control circuit board, and the three ports of the three-way pipe are respectively connected to the gas channel of the preservation chamber, the pump body inlet of the negative pressure pump and the valve body outlet of the solenoid valve.

6. The pellet food preservation device according to claim 1, wherein the preservation chamber has a gas channel connected to the preservation cavity, wherein the pellet food preservation device further includes a main control circuit board and a negative pressure assembly, the negative pressure assembly includes a negative pressure pump and a solenoid valve, the negative pressure pump, the solenoid valve and the door drive part are respectively connected to the main control circuit board, and the pump body inlet of the negative pressure pump and the valve body outlet of the solenoid valve are respectively connected to the gas channel of the preservation chamber.

7. The granular food preservation device according to claim 1, wherein the preservation chamber includes a vibration assembly, the vibration assembly includes a vibrator, the vibrator includes a vibration motor and an eccentric wheel mounted on the rotor of the vibration motor, the vibration motor is mounted in the preservation chamber, and when the vibration motor is powered to drive the eccentric wheel to rotate, the eccentric wheel strikes the preservation chamber, causing the preservation chamber to vibrate.

8. A granular food preservation apparatus, characterized by include: A preservation compartment, wherein the preservation compartment has a preservation cavity and a bottom channel communicating with the preservation cavity; and A conveying assembly, comprising a conveying unit having an inlet and an outlet, and the conveying unit including a cylinder, a cover, a drive rod, a conveying drive unit, and a screw; the cylinder having a cavity; the inlet of the conveying unit being formed on the upper side of one end of the cylinder; the outlet of the conveying unit being formed on the lower side of the other end of the cylinder; the cylinder being mounted on the bottom of the preservation compartment such that the inlet of the conveying unit communicates with the bottom channel of the preservation compartment; the cover having a cover perforation; and the cover being mounted on the cylinder. One end is used to close the opening of the cavity of the cylinder body. One end of the drive rod is rotatably mounted to one end of the cylinder body. The other end of the drive rod is rotatably mounted to the cylinder cover and extends to the outside through the cylinder cover perforation of the cylinder cover for the output shaft drivably mounted to the conveying drive unit. The screw has elastic pusher blades. The screw is disposed on the drive rod and suspended by the drive rod in the cavity of the cylinder body. The pusher blades of the screw extend helically from the feed port of the conveying unit to the discharge port.

9. The pellet food preservation device according to claim 8, wherein the screw has elastic thrust blades, the thrust blades extending in opposite directions to the push blades extending in opposite directions, and the thrust blades and the push blades are respectively located on opposite sides of the discharge port of the conveying unit.

10. The pellet food preservation device according to claim 8, wherein the screw is integrally connected to the drive rod during the forming process.

11. The granular food preservation device according to any one of claims 8 to 10, wherein the conveying unit includes a sealing part, the sealing part including a sealing ring and a sealing cap, the sealing ring being fitted onto the end of the drive rod, the sealing cap having a cap body through hole, the sealing cap being installed on the cylindrical cover such that the end of the sealing cap extends into the cap body through hole, the sealing ring being clamped between the cylindrical cover and the sealing cap, wherein the conveying drive part is installed on the sealing cap.

12. The granular food preservation device according to any one of claims 8 to 10, wherein the conveying assembly includes a door unit, the door unit including a flexible sealing frame, a door drive, and a door assembly, wherein the sealing frame has a frame channel, the sealing frame is hermetically mounted to the conveying unit, the frame channel of the sealing frame is connected to the discharge port of the conveying unit, wherein the door drive is mounted to the conveying unit, wherein the door assembly includes a pressure plate, a floating door, and an elastic element disposed between the pressure plate and the floating door, one side of the pressure plate is drivably mounted to the output shaft of the door drive, wherein after the door drive drives the door assembly to flip downward, the floating door opens the frame channel of the sealing frame, and after the door drive drives the door assembly to flip upward, the floating door applies pressure to the sealing frame in such a way as to cover the frame channel of the sealing frame, thereby closing the frame channel of the sealing frame.

13. The granular food preservation device according to any one of claims 8 to 10, wherein the conveying assembly includes a door unit, the door unit including a door drive, a valve body, a valve seat, and a valve ball, and the door unit has a valve cavity, the valve body having a valve body space and an inlet, an outlet, and a shaft hole respectively communicating with the valve body space, the valve seat having a seat hole, the valve seat being mounted on the inlet of the valve body to form the valve cavity between the valve body and the valve seat, the outlet and the shaft hole of the valve body and the seat hole of the valve seat respectively communicating with the valve cavity, the valve ball having a ball channel, the valve ball being rotatably mounted in the valve cavity, the door drive being mounted on the valve body, the output shaft of the door drive extending into the shaft hole of the valve body, and the valve ball being drivably connected to the door drive, wherein after the door drive drives the valve ball to rotate in the valve cavity, the two opposite openings of the ball channel of the valve ball can correspond to or be misaligned with the outlet of the valve body and the seat hole of the valve seat respectively.

14. The granular food preservation device according to any one of claims 8 to 10, wherein the conveying assembly includes a door unit, the door unit includes a door drive, a door assembly, and a linkage group, the door assembly includes a fixed door plate and a sliding door plate, the fixed door plate has a fixed door plate hole and a groove communicating with the fixed door plate hole, the fixed door plate is installed on the first tube arm of the cylinder in such a way that the fixed door plate hole communicates with the discharge port of the conveying unit, the sliding door plate has a sliding door plate hole, the sliding door plate is slidably installed in the groove of the fixed door plate, the linkage group includes a first rod, a second rod, and a third rod, the opposite ends of the second rod are respectively rotatably installed on one end of the first rod and one end of the third rod, the other end of the first rod is installed on the output shaft of the door drive, the other end of the third rod is installed on the sliding door plate, or the other end of the third rod and the sliding door plate are integrally formed.

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