Vacuum fresh keeping device

Abstract

The utility model discloses a vacuum fresh-keeping device, it includes main control circuit board, negative pressure subassembly, ball valve subassembly and fresh -keeping cabin, the ball valve subassembly includes valve body, valve ball and drive part, the valve body has the valve cavity and respectively communicate in the feed port, discharge port and stem body passageway of the valve cavity, the valve ball is rotatably installed in the valve cavity, the drive part has the drive rod, and it extends to and is installed in the valve ball through the stem body passageway, the fresh -keeping cabin includes cabin body and cabin cover, the cabin body has the cabin cavity and respectively communicate in the bottom of the material taking passageway and gas passageway of the cabin cavity, the cabin cover is sealedly covered in the cabin body, for the cavity mouth of the cabin cavity, the valve body is installed in the bottom of the cabin body with the feed port and the material taking passageway intercommunication mode, the negative pressure subassembly and the gas passageway of the cabin body are connected, for making the cabin cavity of the cabin body form negative pressure environment, the negative pressure subassembly and the drive part are controllably connected in the main control circuit board respectively.

Description

Technical Field

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

[0002] Rice boxes are containers used to store rice and have a wide range of applications in daily life. Commercially available rice is packaged in bags, usually in 5kg or 10kg sizes. After the bag is opened, the rice is directly exposed to the air and affected by air temperature and humidity. In spring, summer, and autumn, especially during the plum rain season, rice is prone to becoming damp, moldy, and infested with rice weevils. To avoid this, users usually need to store rice in a special rice box, which isolates the rice from the air and is vacuum-sealed to extend the rice's shelf life. For example, in Chinese utility model patent with authorization announcement number CN211970396U, the inventor disclosed a novel intelligent insect-proof and moisture-proof metering rice dispenser, which includes a support, a top cover, and a rice bucket. The top cover is placed on the top of the rice bucket. The lower part of the rice bucket is a funnel-shaped structure. The lower end of the funnel is connected to a cylindrical part, and the bottom of the funnel has a rice-discharging opening located on one side of the top of the cylindrical part. The cylindrical part below the rice-discharging opening is provided with rice-discharging fan blades radiating outward from the center. The lower end of the cylindrical part is fixed with a rice-discharging fan cover. The lower end of the rice-discharging fan cover is provided with a rice-discharging channel on the side away from the rice-discharging opening. The lower part of the rice bucket is fixedly connected to the support. The support is provided with a drive assembly for driving the rice-discharging fan blades to rotate. The drive assembly includes a motor and a reduction gear set. The motor is fixed on the support and drives the rice-discharging fan blades to rotate through the reduction gear set on the support. The drawback of the existing technology is that it places the rice-dispensing fan blades at the rice-exhausting outlet and drives the fan blades to rotate through a complex drive component. This method is not only complex in structure, costly, and bulky, but the complex structure will inevitably lead to reduced reliability and a high failure rate. Utility Model Content

[0003] One objective of this invention is to provide a vacuum preservation device, wherein a ball valve assembly is provided at the material intake channel of the preservation chamber, and the ball valve assembly controls whether the particulate matter stored in the chamber of the preservation chamber is taken out from the material intake channel. Compared with the existing combination of rice discharge fan blades and drive components, the vacuum preservation device of this invention has a simpler structure and smaller size.

[0004] One objective of this invention is to provide a vacuum preservation device, wherein a vibration component is provided at the bottom of the preservation chamber. During the material retrieval process, the vibration component causes the preservation chamber to vibrate, which facilitates the smooth retrieval of the particulate matter stored in the chamber through the material retrieval channel.

[0005] According to one aspect of the present invention, the present invention further provides a vacuum preservation device, which includes:

[0006] Main control circuit board;

[0007] Negative pressure components;

[0008] A ball valve assembly, wherein the ball valve assembly includes a valve body, a valve ball, and a drive unit; the valve body has a valve cavity and an inlet, an outlet, and a rod channel respectively communicating with the valve cavity; the valve ball has a ball channel and is rotatably mounted in the valve cavity of the valve body; the drive unit has a drive rod that extends through the rod channel of the valve body to and is mounted on the valve ball, and the drive unit drives the valve ball to rotate within the valve cavity of the valve body; and

[0009] A preservation chamber, comprising a chamber body and a cover, the chamber body having a cavity and a material intake channel and a gas channel respectively connected to the bottom of the cavity, the cover being sealed over the chamber body to close the cavity opening, a valve body being installed at the bottom of the chamber body in a manner connecting the material inlet and the material intake channel, a negative pressure component being connected to the gas channel of the chamber body to create a negative pressure environment in the cavity, wherein the negative pressure component and the drive unit are controllably connected to the main control circuit board.

[0010] According to one embodiment of the present invention, the vacuum preservation device includes a vibration assembly, the vibration assembly includes a vibrator, and the vibrator is disposed at the bottom of the chamber.

[0011] According to one embodiment of the present invention, the vibrator includes a vibration motor and an eccentric wheel mounted on the rotor of the vibration motor. The vibration motor is controllably connected to the main control circuit board. When the rotor of the vibration motor rotates, the eccentric wheel vibrates during rotation to cause the cabin to vibrate.

[0012] According to one embodiment of the present invention, the vibration assembly includes a clamping member, which is fixedly installed at the bottom of the chamber, and the vibration motor is clamped between the chamber and the clamping member to set the vibrator at the bottom of the chamber.

[0013] According to one embodiment of the present invention, the drive unit is mounted on the valve body.

[0014] According to one embodiment of the present invention, the negative pressure assembly includes a negative pressure pump and a solenoid valve, wherein the negative pressure pump and the solenoid valve are respectively controllably connected to the main control circuit board, wherein the negative pressure pump has a pump body inlet and a pump body outlet, and the solenoid valve is a normally closed solenoid valve having a valve body inlet and a valve body outlet, wherein the pump body inlet of the negative pressure pump and the valve body outlet of the solenoid valve are respectively connected to the gas passage of the chamber; or, the negative pressure assembly includes a negative pressure pump and a solenoid valve. The solenoid valve and the three-way pipe are controllably connected to the main control circuit board, wherein the negative pressure pump has a pump body inlet and a pump body outlet, the solenoid valve is a normally closed solenoid valve with a valve body inlet and a valve body outlet, the first port of the three-way pipe is connected to the gas passage of the cabin, the second port of the three-way pipe is connected to the pump body inlet of the negative pressure pump, and the third port of the three-way pipe is connected to the valve body outlet of the solenoid valve.

[0015] According to one embodiment of the present invention, the chamber has a receiving groove that extends downward from the bottom of the chamber cavity, and the gas passage is connected to the receiving groove. The vacuum preservation device includes a breathable filter element that is received in the receiving groove of the chamber.

[0016] According to one embodiment of the present invention, the preservation compartment includes a small cover with multiple small-sized ventilation holes, and the small cover is installed on the compartment body in such a way as to cover the opening of the receiving slot of the compartment body.

[0017] According to one embodiment of the present invention, the preservation compartment includes a bottom shell and a bottom cover. The bottom shell has a shell cavity that runs vertically through it, a material intake cavity with an outer opening, and a bottom shell perforation communicating with the shell cavity and the material intake cavity. The top of the bottom shell is installed at the bottom of the compartment body. The discharge port of the valve body is connected to the bottom shell perforation of the bottom shell. The bottom cover is installed at the bottom of the bottom shell to close the bottom opening of the bottom shell. The main control circuit board is installed on the bottom shell.

[0018] According to one embodiment of the present invention, the vacuum preservation device includes a rechargeable battery and a charging port. The rechargeable battery and the charging port are respectively connected to the main control circuit board, and the rechargeable battery, the charging port and the negative pressure component are respectively installed on the bottom cover. Attached Figure Description

[0019] Figure 1 This is a perspective view of a vacuum preservation device according to a preferred embodiment of the present invention.

[0020] Figure 2This is an exploded view of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0021] Figure 3 This is an exploded view of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0022] Figure 4 This is a three-dimensional cross-sectional view of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0023] Figure 5 yes Figure 4 A magnified view of a local location.

[0024] Figure 6 yes Figure 4 A magnified view of another local location.

[0025] Figure 7 and Figure 8 This illustrates the process by which a user stores particulate matter in the chamber of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0026] Figure 9 This illustrates the process of evacuating the chamber of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0027] Figure 10 The process of a user operating the vacuum preservation device according to the above-described preferred embodiment of the present invention to retrieve materials is shown.

[0028] Figure 11 This illustrates the process of depressurizing the chamber of the vacuum preservation device according to the above-described preferred embodiment of the present invention.

[0029] Figure 12 This illustrates the process by which the ball valve assembly of the vacuum preservation device according to the above-described preferred embodiment of the present invention opens the material intake channel of the preservation chamber.

[0030] Figure 13 The process of a user stopping the material intake of the vacuum preservation device according to the above-described preferred embodiment of the present invention is shown.

[0031] Figure 14 This illustrates the process by which the ball valve assembly of the vacuum preservation device according to the above-described preferred embodiment of the present invention closes the material intake channel of the preservation chamber.

[0032] Figure 15 This is a three-dimensional cross-sectional view of a modified example of the vacuum preservation device according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 14 A preferred embodiment of the present invention will be disclosed and described in the following description, wherein the vacuum preservation device is used to preserve granular materials such as various types of rice, coffee beans, cat food, dog food, etc., and the vacuum preservation device includes a preservation chamber 10, a ball valve assembly 20, a negative pressure assembly 30, and a main control circuit board 40.

[0036] Specifically, the preservation compartment 10 includes a compartment body 11 and a cover 12. The compartment body 11 has a cavity 111 for storing the particulate matter. The cover 12 is sealed onto the compartment body 11 to close the opening of the cavity 111. When the user needs to add the particulate matter, the cover 12 is removed from the compartment body 11 to expose the opening of the cavity 111. After the particulate matter is added to the cavity 111, the cover 12 is placed back on the compartment body 11 to close the opening of the cavity 111, thus creating a sealed environment within the cavity 111.

[0037] Reference Appendix Figure 3 and Figure 4 The bottom of the chamber 11 is provided with a material intake channel 112 and at least one gas channel 113, the material intake channel 112 and the gas channel 113 respectively connected to the chamber cavity 111 of the chamber 11. Preferably, the bottom of the chamber 11 is funnel-shaped, and the material intake channel 112 is formed at the lowest position of the chamber 11, so that the particulate matter stored in the chamber cavity 111 of the chamber 11 can flow smoothly through the material intake channel 112.

[0038] The ball valve assembly 20 is controllably connected to the main control circuit board 40, and the main control circuit board 40 controls the ball valve assembly 20 so that the ball valve assembly 20 can open and close the material intake channel 112 of the chamber 11. When the ball valve assembly 20 opens the material intake channel 112 of the chamber 11, the particles stored in the chamber cavity 111 of the chamber 11 are allowed to be taken out through the material intake channel 112 and the ball valve assembly 20. When the ball valve assembly 20 closes the material intake channel 112 of the chamber 11, the particles stored in the chamber cavity 111 of the chamber 11 are prevented from being taken out through the material intake channel 112 and the ball valve assembly 20.

[0039] The negative pressure component 30 is controllably connected to the main control circuit board 40, which controls the negative pressure component 30 to create both negative and normal pressure environments in the chamber 111 through the gas channel 113 of the chamber 11. When the ball valve assembly 20 closes the material intake channel 112 of the chamber 11, the negative pressure component 30 is allowed to create a negative pressure environment in the chamber 111 through the gas channel 113 of the chamber 11. After the negative pressure component 30 is allowed to create a normal pressure environment in the chamber 111 through the gas channel 113 of the chamber 11, the ball valve assembly 20 can open the material intake channel 112 of the chamber 11. In other words, the negative pressure component 30 not only allows air inside the chamber 111 of the cabin 11 to be extracted through the gas channel 113 to form a negative pressure environment in the chamber 111, but also allows air from the external environment to enter the chamber 111 through the gas channel 113 to form a normal pressure environment in the chamber 111.

[0040] Reference Appendix Figure 4 and Figure 5 The ball valve assembly 20 includes a valve body 21, a valve ball 22, and a drive unit 23. The valve body 21 has a valve cavity 211, an inlet 212, an outlet 213, and a rod channel 214. The inlet 212, the outlet 213, and the rod channel 214 are respectively connected to the valve cavity 211. The valve body 21 is mounted on the bottom of the chamber 11, and the inlet 212 of the valve body 21 is connected to the material intake channel 112 of the chamber 11. For example, a screw or bolt can be used to lock the valve body 21 to the bottom of the chamber 11. The valve ball 22 has a ball channel. 221, the valve ball 22 is rotatably mounted in the valve cavity 211 of the valve body 21, wherein the drive unit 23 has a drive rod 231, the drive rod 231 of the drive unit 23 extends through the rod channel 214 of the valve body 21 to and is mounted on the valve ball 22, such that the valve ball 22 is drivably mounted on the drive rod 231 of the drive unit 23, the drive unit 23 is controllably connected to the main control circuit board 40, and the main control circuit board 40 controls the working state of the drive unit 23, so that the drive unit 23 can drive the valve ball 22 to rotate in the valve cavity 211 of the valve body 21.

[0041] When the drive unit 23 drives the valve ball 22 to rotate within the valve cavity 211 of the valve body 21 until the two openings of the ball channel 221 of the valve ball 22 correspond to the feed inlet 212 and the discharge outlet 213 of the valve body 21, respectively, the ball valve assembly 20 opens the material intake channel 112 of the chamber 11. At this time, the particles flowing through the material intake channel 112 of the chamber 11 can pass sequentially through the feed inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the discharge outlet 213 of the valve body 21. When the drive unit 23 drives the valve ball 22 to rotate within the valve cavity 211 of the valve body 21 until the two openings of the ball channel 221 of the valve ball 22 are blocked by the inner wall of the valve body 21, the ball valve assembly 20 closes the material intake channel 112 of the chamber 11.

[0042] In this invention, the ball valve assembly 20 controls the opening and closing of the material intake channel 112 of the chamber 11, making the structure of the vacuum preservation device simpler and more reliable. Compared with the prior art, the ball valve assembly 20 of the vacuum preservation device of this invention is smaller in size, and the valve body 21 can be directly installed at the bottom of the chamber 11. This not only facilitates the miniaturization of the vacuum preservation device but also allows for sealing of the assembly position of the chamber 11 and the valve body 21, ensuring that the chamber 111 of the chamber 11 remains under negative pressure for an extended period. For example, in the attached... Figures 1 to 14 In this specific example of the vacuum preservation device of the present invention, the vacuum preservation device includes a sealing gasket 50, which may be made of rubber or silicone. The sealing gasket 50 is clamped between the chamber 11 and the valve body 21. The sealing gasket 50 prevents the formation of gaps between the chamber 11 and the valve body 21, thereby avoiding air leakage at the assembly position of the chamber 11 and the valve body 21.

[0043] Further, see Appendix Figure 4 and Figure 5 The valve ball 22 has a non-circular notch 222, the position of which corresponds to the position of the rod channel 214 of the valve body 21. The shape and size of the end of the drive rod 231 of the drive part 23 are consistent with the shape and size of the notch 222 of the valve ball 22. The end of the drive rod 231 of the drive part 23 is inserted into the notch 222 of the valve ball 22, and the drive part 23 is locked to the valve body 21 by a screw or bolt. Thus, the valve ball 22 is drivably mounted on the drive rod 231 of the drive part 23. When the drive rod 231 of the drive part 23 rotates, the drive part 23 drives the valve ball 22 to rotate within the valve cavity 211 of the valve body 21.

[0044] In this specific example of the vacuum preservation device of this utility model, the drive unit 23 is a stepper motor, and the drive rod 231 is composed of a first part 2311 and a second part 2312. The first part 2311 is the rotor of the drive unit 231, and the second part 2312 is an extension rod, one end of which is fixedly installed on the exposed end of the first part 2311. For example, after the end of the second part 2312 is fitted onto the exposed end of the first part 2311, the exposed end of the first part 2311 and the end of the second part 2312 are locked by a pin. The other end of the second part 2312 is inserted into the notch 222 of the valve ball 22.

[0045] Continue to refer to the appendix Figures 1 to 14 In this specific example of the vacuum preservation device of this utility model, the negative pressure component 30 includes a negative pressure pump 31, a solenoid valve 32 and a three-way pipe 33. The negative pressure pump 31 and the solenoid valve 32 are respectively controllably connected to the main control circuit board 40, and the main control circuit board 40 controls the working state of the negative pressure pump 31 and the working state of the solenoid valve 32. The negative pressure pump 31 has a pump body inlet 311 and a pump body outlet 312. The solenoid valve 32 is a normally closed solenoid valve, which has a valve body inlet 321 and a valve body outlet 322. The three-way pipe 33 has three ports, namely a first port 331, a second port 332 and a third port 333. The first port 331 of the three-way pipe 33 is connected to the gas passage 113 of the cabin 11. The second port 332 of the three-way pipe 33 is connected to the pump body inlet 311 of the negative pressure pump 31. The third port 333 of the three-way pipe 33 is connected to the valve body outlet 322 of the solenoid valve 32. When the ball valve assembly 20 closes the material intake channel 112 of the chamber 11, the main control circuit board 40 allows the negative pressure pump 31 to be energized and prevents the solenoid valve 32 from being energized. At this time, the negative pressure pump 31 extracts the air from the chamber 111 of the chamber 11 through the three-way pipe 33, so that the chamber 111 of the chamber 11 forms a negative pressure state. Alternatively, the main control circuit board 40 prevents the negative pressure pump 31 from being energized and allows the solenoid valve 32 to be energized. At this time, the solenoid valve 32 depressurizes the chamber 111 of the chamber 11 through the three-way pipe 33, so that the chamber 111 of the chamber 11 forms a normal pressure state.

[0046] Optionally, in the appendix Figure 15In another specific example of the vacuum preservation device of this utility model, the negative pressure component 30 may not have the three-way pipe 33. Instead, the pump body inlet 311 of the negative pressure pump 31 and the valve body outlet 322 of the solenoid valve 32 are respectively connected to the gas channel 113 of the chamber 11. Thus, when the ball valve component 20 closes the material intake channel 112 of the chamber 11, the main control circuit board 40 allows the negative pressure pump 31 to be energized and prevents the solenoid valve 32 from being energized. At this time, the negative pressure pump 31 extracts the air from the chamber 111 of the chamber 11, so that the chamber 111 of the chamber 11 forms a negative pressure state. Alternatively, the main control circuit board 40 prevents the negative pressure pump 31 from being energized and allows the solenoid valve 32 to be energized. At this time, the solenoid valve 32 depressurizes the chamber 111 of the chamber 11, so that the chamber 111 of the chamber 11 forms a normal pressure state. It should be noted that, in the appendix Figure 13 In this specific example of the vacuum preservation device shown, to facilitate connecting the pump body inlet 311 of the negative pressure pump 31 and the valve body outlet 322 of the solenoid valve 32 to the gas passage 113 of the chamber 11, the chamber 11 may have two gas passages 113. The opposite ends of one hose are connected to the pump body inlet 311 of the negative pressure pump 31 and one of the gas passages 113 of the chamber 11, respectively, and the opposite ends of the other hose are connected to the valve body outlet 322 of the solenoid valve 32 and the other gas passage 113 of the chamber 11, respectively.

[0047] Reference Appendix Figure 4 and Figure 6 The chamber 11 has a receiving groove 114 extending downward from the bottom of the chamber cavity 111. The gas passage 113 is connected to the receiving groove 114. The preservation chamber 10 further includes a breathable filter element 13, which is housed in the receiving groove 114 of the chamber 11. When the negative pressure pump 31 is energized to draw negative pressure into the chamber cavity 111 of the chamber 11, the filter element 13 can prevent the particulate matter stored in the chamber cavity 111 of the chamber 11 from entering the three-way pipe 33 and the negative pressure pump 31 through the gas passage 113 of the chamber 11, thereby protecting the negative pressure pump 31 and improving the reliability and stability of the vacuum preservation device.

[0048] Continue to refer to the appendix Figure 4 and Figure 6The preservation compartment 10 further includes a small cover 14 having a plurality of small-sized vent holes 141. The small cover 14 is installed in the compartment 11 such that it covers the opening of the receiving groove 114 of the compartment 11, so that the filter element 13 can be reliably received in the receiving groove 114 of the compartment 11. Specifically, the small cover 14 includes a top wall 142 and a peripheral wall 143. The peripheral wall 143 extends downward from the edge of the top wall 142 to form a mounting groove 144 between the peripheral wall 143 and the top wall 142. The vent holes 141 are formed in the top wall 142, and the filter element 13 is installed in the mounting groove 144. The shape and size of the peripheral wall 143 match the shape and size of the receiving groove 114 of the compartment 11. The small cover 14 is installed in the receiving groove 114 of the compartment 11. 4. The filter element 13 is received in the receiving groove 114 of the chamber 11, wherein the top wall 142 of the small cover 14 is flush with the bottom wall of the chamber 11, the outer surface of the peripheral wall 143 of the small cover 14 and the inner surface of the chamber 11 that defines the receiving groove 114 are in contact with each other, and the small cover 14 is reliably installed in the receiving groove 114 of the chamber 11 based on the friction between the two, thereby reliably receiving the filter element 13 in the receiving groove 114 of the chamber 11.

[0049] Continue to refer to the appendix Figures 1 to 14The preservation compartment 10 includes a bottom shell 15 and a bottom cover 16. The bottom shell 15 has a shell cavity 151, a material intake cavity 152, and a bottom shell through-hole 153 communicating with the shell cavity 151 and the material intake cavity 152. The shell cavity 151 penetrates the upper and lower sides of the bottom shell 15, and the material intake cavity 152 has an outer opening. The top of the bottom shell 15 is installed at the bottom of the compartment 11. For example, a screw or bolt can be used to install the top of the bottom shell 15 at the bottom of the compartment 11. The discharge port 213 of the valve body 21 communicates with the bottom shell through-hole 153 of the bottom shell 15. The bottom cover 16 is installed at the bottom of the bottom shell 15 to close the bottom opening of the bottom shell 15. For example, a screw or bolt can be used to install the bottom cover 16 at the bottom of the bottom shell 15. The ball valve assembly 20, the negative pressure assembly 30, and the main control circuit board 40 can be respectively disposed in the cavity 151 of the bottom shell 15, so that the chamber 11, the cover 12, the bottom shell 15, and the bottom cover 16 can form the general appearance of the vacuum preservation device. Preferably, the negative pressure pump 31 and the solenoid valve 32 of the negative pressure assembly 30 can be respectively fixedly installed on the bottom cover 16, so that the negative pressure assembly 30 is disposed in the cavity 151 of the bottom shell 15, and the main control circuit board 40 is fixedly installed on the inner wall of the bottom shell 15, so that the main control circuit board 40 is disposed in the cavity 151 of the bottom shell 15.

[0050] Furthermore, the bottom shell 15 has at least one side wall perforation 154, which communicates with the shell cavity 151. The display portion 41 and the button portion 42 mounted on the main control circuit board 40 extend to or correspond to the side wall perforation 154 of the bottom shell 15, so that the user can easily view the working status of the vacuum preservation device and / or operate the vacuum preservation device. Preferably, the preservation chamber 10 further includes a light-transmitting cover 17, which is disposed on the bottom shell 15 to cover the side wall perforation 154 of the bottom shell 15. The light-transmitting cover 17 not only decorates the appearance of the vacuum preservation device, but also protects the display portion 41 and the button portion 42 mounted on the main control circuit board 40.

[0051] Users can preset the output volume of the vacuum preservation device via the button section 42. For example, upon initial use, the user can set the output volume of the vacuum preservation device to 200g, at which point the display section 42 will show 200g. When the user activates the vacuum preservation device via another button section 42, the ball valve assembly 20 opens the material intake channel 112 of the chamber 11 to allow the particles to pass through. After a period of time, the ball valve assembly 20 closes the material intake channel 112 of the chamber 11, at which point the final amount of particles passing through the material intake channel 112 of the chamber 11 is 200g. It is understood that users can increase or decrease the output volume via the button section 42. For example, pressing the "+" button increases the preset output volume, and pressing the "-" button decreases the preset output volume. It should be noted that the time for the ball valve assembly 20 to open the material intake channel 112 of the chamber 11 depends on the user-preset discharge volume. Since the discharge volume of the vacuum preservation device per unit time is fixed, the time for the ball valve assembly 20 to open the material intake channel 112 of the chamber 11 can also be determined according to the user-preset discharge volume.

[0052] Additionally, the preservation compartment 10 includes a support 18 having at least one support perforation 181. The support 18 is clamped between the bottom shell 15 and the main control circuit board 40 in such a manner that the support perforation 181 corresponds to the side wall perforation 154, thereby reliably mounting the main control circuit board 40 onto the bottom shell 15. Specifically, the support 18 has an outer support wall 182 and an inner support wall 183 corresponding to the outer support wall 182. The support perforation 181 extends from the outer support wall 182 to the inner support wall 183. The shape of the outer support wall 182 matches the shape of the inner wall of the bottom shell 15, and both can be curved surfaces. The shape of the inner support wall 183 matches the shape of the main control circuit board 40, and both can be flat surfaces. Thus, the support 18 reliably mounts the main control circuit board 40 onto the bottom shell 15.

[0053] Further, see Appendix Figure 4 The vacuum preservation device includes a rechargeable battery 60 and a charging port 70. The rechargeable battery 60 and the charging port 70 are respectively connected to the main control circuit board 40, and are respectively mounted on the bottom cover 16. The rechargeable battery 60 can provide power to the drive unit 23, the negative pressure pump 31, the solenoid valve 32, and the main control circuit board 40. The charging port 70 can be, but is not limited to, a Type-C charging port.

[0054] Furthermore, see the attached document. Figure 4 The vacuum preservation device includes a mounting member 80, with its opposite ends fixedly mounted to the bottom cover 16. The rechargeable battery 60 and the negative pressure pump 31 are clamped between the bottom cover 16 and the mounting member 80 to mount the negative pressure pump 31 and the rechargeable battery 60 to the bottom cover 16. The solenoid valve 32 can be locked to the bottom cover 16 by screws or bolts. The opposite ends of the mounting member 80 can be locked to the bottom cover 16 by screws or bolts.

[0055] Further, see Appendix Figure 3 , Figure 4 and Figure 6 The vacuum preservation device includes a vibration assembly 90, which includes a vibrator 91. The vibrator 91 is disposed at the bottom of the chamber 11 and is used to cause the chamber 11 to vibrate, so as to ensure that the particles stored in the chamber 111 of the chamber 11 can pass smoothly through the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the outlet 213 of the valve body 21.

[0056] Specifically, the vibrator 91 includes a vibration motor 911 and an eccentric wheel 912 mounted on the rotor of the vibration motor 911. The vibration motor 911 is controllably connected to the main control circuit board 40. When the rotor of the vibration motor 911 rotates, the eccentric wheel 912 vibrates to vibrate the chamber 11, thereby ensuring that the particles stored in the chamber 111 of the chamber 11 pass smoothly through the material intake channel 112 of the chamber 11, the feed port 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the discharge port 213 of the valve body 21.

[0057] It is understandable that the amount of particulate matter stored in the chamber 111 of the chamber 11 is different. After the ball valve 22 opens the material intake channel 112 of the chamber 11, the speed at which the particulate matter passes through the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the outlet 213 of the valve body 21 are also different, which in turn leads to different amounts of particulate matter discharged per unit time. Specifically, after the ball valve 22 opens the material intake channel 112 of the chamber 11, the more particles stored in the chamber cavity 111 of the chamber 11, the faster the discharge speed through the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the outlet 213 of the valve body 21, the more particles are discharged per unit time. Conversely, the less particles stored in the chamber cavity 111 of the chamber 11, the faster the discharge speed through the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, and the outlet 213 of the valve body 21, the faster the discharge speed. The slower the discharge speed of the ball channel 221 of the ball 22 and the discharge port 213 of the valve body 21, the less particulate matter is discharged per unit time. Therefore, during the operation of the vacuum preservation device, the vibration generated by the vibrator 91 ensures that the discharge speed of the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the discharge port 213 of the valve body 21 remains basically consistent, regardless of the amount of particulate matter stored in the chamber 111. This avoids errors in discharge volume caused by different amounts of particulate matter.

[0058] Furthermore, the vibration assembly 90 includes a clamping member 92, which is fixedly mounted to the bottom of the chamber 11. The vibration motor 911 is clamped between the chamber 11 and the clamping member 92 to position the vibrator 911 at the bottom of the chamber 11. Preferably, a screw or bolt can be used to fix the opposite ends of the clamping member 92 to the bottom of the chamber 11.

[0059] Furthermore, the vacuum preservation device includes a material receiving box 100, which is detachably installed in the material receiving chamber 152 of the bottom shell 15. The material receiving box 100 is used to receive the particulate matter flowing out through the material receiving channel 112 of the chamber 11 and the ball valve assembly 20.

[0060] Reference Appendix Figures 7 to 14The vacuum preservation device of this utility model is used as follows: After the user opens the cover 12, the opening of the chamber 111 of the chamber body 11 is exposed. At this time, the user can pour the granules into the chamber 111 of the chamber body 11 for storage. After pouring, the cover 12 is sealed on the top of the chamber body 11 to close the opening of the chamber 111. It can be understood that at this time, the ball valve assembly 20 is in the state of closing the material intake channel 112 of the chamber body 11. Next, the main control circuit board 40 allows the negative pressure pump 31 to be energized and prevents the solenoid valve 32 from being energized. At this time, the negative pressure pump 31 draws out the air in the chamber 111 of the cabin 11 through the three-way pipe 33, so that the chamber 111 of the cabin 11 forms a negative pressure state. During this process, the filter element 13 prevents the particulate matter stored in the chamber 111 of the cabin 11 from entering the three-way pipe 33 and the negative pressure pump 31 through the gas channel 113 of the cabin 11. When the user needs to obtain the particulate matter, firstly, the main control circuit board 40 prevents the negative pressure pump 31 from being energized and allows the solenoid valve 32 to be energized. The solenoid valve 32 depressurizes the chamber 111 of the chamber 11 through the three-way pipe 33, so that the chamber 111 of the chamber 11 is at normal pressure. Secondly, the drive unit 23 drives the valve ball 22 to rotate within the valve chamber 211 of the valve body 21 until the two opposite openings of the ball channel 221 of the valve ball 22 correspond to the feed inlet 212 and the discharge outlet 213 of the valve body 21, respectively, to open the material intake channel 112 of the chamber 11. At this time, the particulate matter flowing through the chamber 11... The particles in the material intake channel 112 can sequentially pass through the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the outlet 213 of the valve body 21 to reach the material intake box 100. During this process, the vibration motor 911 of the vibrator 91 can drive the eccentric wheel 912 to rotate and generate vibration, thereby causing the chamber 11 to vibrate. This ensures that the particles stored in the chamber 111 of the chamber 11 can smoothly pass through the material intake channel 112 of the chamber 11, the inlet 212 of the valve body 21, the ball channel 221 of the valve ball 22, and the outlet 213 of the valve body 21. It can be understood that after the material intake is completed, the chamber 111 of the chamber 11 can be vacuumed again.

[0061] 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 vacuum preservation device, characterized in that, include: Main control circuit board; Negative pressure components; A ball valve assembly, wherein the ball valve assembly includes a valve body, a valve ball, and a drive unit, the valve body having a valve cavity and an inlet, an outlet, and a rod channel respectively communicating with the valve cavity, the valve ball having a ball channel, the valve ball being rotatably mounted in the valve cavity of the valve body, the drive unit having a drive rod, the drive rod of the drive unit extending through the rod channel of the valve body to and being mounted on the valve ball, the drive unit driving the valve ball to rotate within the valve cavity of the valve body; as well as A preservation chamber, comprising a chamber body and a cover, the chamber body having a cavity and a material intake channel and a gas channel respectively connected to the bottom of the cavity, the cover being sealed over the chamber body to close the cavity opening, a valve body being installed at the bottom of the chamber body in a manner connecting the material inlet and the material intake channel, a negative pressure component being connected to the gas channel of the chamber body to create a negative pressure environment in the cavity, wherein the negative pressure component and the drive unit are controllably connected to the main control circuit board.

2. The vacuum preservation device according to claim 1, wherein the vacuum preservation device includes a vibration assembly, the vibration assembly includes a vibrator, and the vibrator is disposed at the bottom of the chamber.

3. The vacuum preservation device according to claim 2, wherein the vibrator includes a vibration motor and an eccentric wheel mounted on the rotor of the vibration motor, the vibration motor is controllably connected to the main control circuit board, wherein when the rotor of the vibration motor rotates, the eccentric wheel vibrates during rotation to cause the chamber to vibrate.

4. The vacuum preservation device according to claim 3, wherein the vibration component includes a clamping member, the clamping member is fixedly installed at the bottom of the chamber, and the vibration motor is clamped between the chamber and the clamping member to position the vibrator at the bottom of the chamber.

5. The vacuum preservation device according to claim 1, wherein the drive unit is mounted on the valve body.

6. The vacuum preservation device according to any one of claims 1 to 5, wherein the negative pressure assembly includes a negative pressure pump and a solenoid valve, the negative pressure pump and the solenoid valve being controllably connected to the main control circuit board, wherein the negative pressure pump has a pump body inlet and a pump body outlet, the solenoid valve is a normally closed solenoid valve having a valve body inlet and a valve body outlet, the pump body inlet of the negative pressure pump and the valve body outlet of the solenoid valve being respectively connected to the gas passage of the chamber; or, the negative pressure assembly includes... The system includes a negative pressure pump, a solenoid valve, and a three-way pipe. The negative pressure pump and the solenoid valve are controllably connected to the main control circuit board. The negative pressure pump has a pump body inlet and a pump body outlet. The solenoid valve is a normally closed solenoid valve with a valve body inlet and a valve body outlet. The first port of the three-way pipe is connected to the gas passage of the cabin. The second port of the three-way pipe is connected to the pump body inlet of the negative pressure pump. The third port of the three-way pipe is connected to the valve body outlet of the solenoid valve.

7. The vacuum preservation device according to any one of claims 1 to 5, wherein the chamber has a receiving groove extending downward from the bottom of the chamber cavity, the gas passage is connected to the receiving groove, and wherein the vacuum preservation device includes a breathable filter element received in the receiving groove of the chamber.

8. The vacuum preservation device according to claim 7, wherein the preservation chamber includes a small cover having a plurality of small-sized vent holes, and the small cover is installed in the chamber body in such a way as to cover the opening of the receiving groove of the chamber body.

9. The vacuum preservation device according to any one of claims 1 to 5, wherein the preservation chamber includes a bottom shell and a bottom cover, the bottom shell having a shell cavity extending vertically, a material intake chamber with an outer opening, and a bottom shell perforation communicating with the shell cavity and the material intake chamber, the top of the bottom shell being installed at the bottom of the chamber, the discharge port of the valve body communicating with the bottom shell perforation of the bottom shell, the bottom cover being installed at the bottom of the bottom shell to close the bottom opening of the bottom shell, wherein the main control circuit board is installed on the bottom shell.

10. The vacuum preservation device according to claim 9, wherein the vacuum preservation device includes a rechargeable battery and a charging port, the rechargeable battery and the charging port are respectively connected to the main control circuit board, and the rechargeable battery, the charging port and the negative pressure component are respectively installed on the bottom cover.

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