A gravity box based vending apparatus

Abstract

The application relates to the field of retail equipment, and particularly discloses a vending device based on a gravity box, which is characterized by comprising a vending device; the vending device comprises a barrel body, the barrel body is arranged above a base, and an inner cavity of the barrel body and the base form a sealed space; an air extraction assembly, a weighing assembly and a material guiding assembly are arranged at the bottom of the base; the air extraction assembly is communicated with the inner cavity of the barrel body to extract vacuum in the inner cavity of the barrel body; the weighing assembly weighs the barrel body and monitors weight change of the barrel body; and the material guiding assembly is communicated with the inner cavity of the barrel body to quantitatively guide materials in the inner cavity of the barrel body out according to the weight change of the barrel body. The barrel body of the application is extracted vacuum to form a sealed space, oxygen and moisture are isolated, the storage period of high-sensitivity materials in the barrel body is prolonged, and the problems that powdery / granular materials are prone to be blocked due to dampening and caking and are difficult to be quantitatively output are avoided.

Description

Technical Field

[0001] This invention relates to the field of retail equipment, and more particularly to a vending device based on a gravity box. Background Technology

[0002] Vending machines, as core equipment in unmanned retail, are widely used for the sale of standardized goods such as snacks and beverages. Among them, gravity-fed vending machines have become the mainstream solution for product storage and distribution due to their advantages such as relying on product weight to dispense goods, convenient restocking, and low failure rate. However, existing gravity-fed vending machine technology still has the following significant drawbacks: 1. Unsuitable for perishable goods: Traditional gravity boxes are open or atmospheric pressure designs, which cannot isolate oxygen and moisture. For items that are sensitive to oxidation and deliquescence, long-term storage in gravity boxes will lead to flavor loss, clumping and deterioration, which severely limits the types of goods that can be sold. At the same time, powdered / granular materials are prone to clumping due to moisture, causing blockage and making it difficult to dispense in a quantitative manner. 2. When outputting bulk materials, there are requirements for the accuracy of the output weight. Traditional gravity boxes have deviations in the precise output control of bulk materials.

[0003] In view of this, we propose a vending device based on a gravity box. Summary of the Invention

[0004] The purpose of at least one specific embodiment of the present invention is to overcome the defects of the prior art and provide a vending device based on a gravity box.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A gravity-box-based vending device, characterized in that it includes a vending device: The vending device includes a barrel, which is mounted above a base and the inner cavity of the barrel forms a sealed space with the base; The base is equipped with an air extraction component, a weighing component, and a material guiding component. The vacuum assembly is connected to the inner cavity of the barrel to create a vacuum in the inner cavity of the barrel. The weighing component is used to weigh the barrel and monitor its weight changes; The material guiding component is connected to the inner cavity of the barrel to quantitatively discharge the material inside the barrel according to the weight change of the barrel.

[0006] Preferably, the inner cavity of the barrel is provided with a partition, which divides the inner cavity of the barrel into a first inner cavity and a second inner cavity that are interconnected. A filter screen is installed at the connection between the top of the first inner cavity and the second inner cavity. The bottom of the first inner cavity is connected to the air extraction component, and the bottom of the second inner cavity is connected to the material guiding component.

[0007] Preferably, the top of the barrel is provided with a sealing cap, the bottom of the inner cavity of the barrel is provided with a bottom plate, the bottom center of the bottom plate is provided with an opening, the bottom outer side of the barrel is provided with an air guide port and a material guide port, the air guide port is connected to the first inner cavity, the material guide port is connected to the second inner cavity, a sliding sealing plate is provided at the material guide port, the sealing cap and the sliding sealing plate seal the barrel to form a sealed space, the air guide port is sealed and connected to the air extraction assembly, and the material guide port is sealed and connected to the material guide assembly.

[0008] Preferably, the air extraction assembly includes an air pump motor and an air extraction check valve connected to the air pump motor, wherein the air extraction check valve is sealed to the air inlet.

[0009] Preferably, the weighing assembly includes a weighing panel supported on the bottom of the barrel and a weighing sensor supported on the bottom of the weighing panel, wherein the weighing sensor is installed at the bottom of the inner cavity of the base.

[0010] Preferably, the material guiding assembly includes a material guiding barrel disposed in the base, a material guiding roller disposed in the material guiding barrel, and a material guiding motor connected to the material guiding roller; The top of the feed hopper is provided with a feed inlet and the bottom with a discharge outlet. The feed inlet is sealed and connected to the feed outlet at the bottom of the hopper, and a sealing component is installed at the discharge outlet.

[0011] Preferably, the sealing assembly includes a sealing motor installed in the base and a sealing plate connected to the sealing motor. The sealing motor drives the sealing plate to rotate, thereby sealing the discharge port.

[0012] Preferably, the base includes an upper base and a lower base. The upper base has an opening corresponding to the material guide port and an air guide part corresponding to the air guide port. An air extraction sealing ring is provided between the air guide part and the air guide port. The air guide part is provided with a first air nozzle and a second air nozzle. The first air nozzle and the second air nozzle keep the first inner cavity and the inner cavity of the base connected. The lower base is equipped with a discharge sleeve, which is located below the discharge port.

[0013] Preferably, the air extraction assembly further includes a pressure relief valve, which is sealed to the air inlet.

[0014] Preferably, a control panel is installed on one side of the base, and a main control circuit board is provided inside the base. The main control circuit board is electrically connected to the air extraction component, the weighing component, the material guiding component, the sealing component, and the pressure relief valve. The sealing component includes a sealing motor and a sealing plate.

[0015] The beneficial effects of this application are as follows: 1. The vacuuming of the barrel in this application forms a sealed space, isolating oxygen and moisture, thereby extending the storage period of highly sensitive materials inside the barrel and avoiding the problem of powdery / granular materials easily clumping due to moisture, causing jamming and difficulty in quantitative output.

[0016] The barrel is equipped with a partition that divides the inner cavity into a first inner cavity and a second inner cavity that are interconnected. The air extraction component is connected to the first inner cavity, and the material guiding component is connected to the second inner cavity. The partition design achieves physical isolation between the air extraction zone and the material guiding zone, avoids material from blocking the air extraction channel, and ensures vacuum stability.

[0017] The top of the barrel is equipped with a sealing cap, and the feed inlet is equipped with a sliding sealing plate. When materials are stored in the barrel, the sealing cap and the sliding sealing plate seal the barrel to form a sealed space, and a vacuum is drawn by the vacuum assembly. When materials need to be discharged, the sliding sealing plate is pulled out, and the inner cavity of the barrel is connected to the feed assembly, which facilitates the smooth discharge of materials. When the sliding sealing plate is pushed in, the inner cavity of the barrel is separated from the feed assembly, and the barrel is sealed again to form a sealed space. The sliding sealing plate acts as a "dynamic valve" of the vacuum chamber. When it is closed, it can isolate the barrel from the feed assembly and maintain a vacuum storage environment. When it is pulled out, it can instantly connect the barrel and the feed container, allowing materials to be discharged without depressurization, thus avoiding the energy consumption of repeated vacuuming for each shipment.

[0018] When the material is discharged, the weighing component can monitor the weight change of the barrel in real time. The weight change of the barrel is the weight of the material discharged by the material guide component, which facilitates the setting and real-time monitoring of the discharge weight. Moreover, the weighing component is directly supported at the bottom of the barrel and is not affected by the vibration of the motors inside the equipment when monitoring the weight change of the barrel, thus improving the accuracy of the discharge weight monitoring. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the longitudinal section of this application; Figure 3 This is a partial structural diagram of this application; Figure 4 This is a schematic diagram of the structure of the base in this application; Figure 5 This is a schematic diagram of the base structure from another angle in this application; Figure 6 This is a structural schematic diagram of the barrel body of this application.

[0021] In the diagram, 100 is the vending device, 10 is the base, 101 is the upper base, 102 is the lower base, 103 is the air guide, 104 is the air extraction sealing ring, 105 is the first air nozzle, 106 is the second air nozzle, 20 is the barrel body, 20a is the partition, 200 is the discharge sleeve, 201 is the first inner cavity, 202 is the second inner cavity, 203 is the air guide port, 204 is the material guide port, 205 is the sealing cover, 30 is the air extraction assembly, 300 is the control panel, 301 is the air pump motor, and 302 is the one-way air extraction unit. Valve, 303-Pressure relief valve, 40-Weighing assembly, 400-Main control circuit board, 401-Weighing panel, 402-Support plate, 403-Weighing sensor, 404-Lower support plate, 50-Guide assembly, 501-Guide bucket, 502-Guide roller, 503-Guide motor, 504-Inlet, 505-Outlet, 60-Sliding sealing plate, 70-Filter screen, 80-Base plate, 801-Opening, 90-Sealing assembly, 901-Sealing motor, 902-Sealing plate. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Reference Figure 1 , Figure 2 A vending device 100 based on a gravity box includes a base 10, a barrel 20 disposed above the base 10, an air extraction component 30 communicating with the inner cavity of the barrel 20, a weighing component 40 installed below the barrel 20, and a material guiding component 50 communicating with the inner cavity of the barrel 20.

[0024] The inner cavity of the barrel 20 is a sealed space filled with material. The vacuum component 30, the weighing component 40, and the material guiding component 50 are all installed in the base 10. After the vacuum component 30 is connected to the inner cavity of the barrel 20, it can create a vacuum in the inner cavity of the barrel 20. The weighing component 40 is installed below the barrel 20 and can weigh the barrel 20 to monitor the weight change of the barrel 20. The material guiding component 50 can quantitatively discharge the material in the inner cavity according to the weight change of the barrel 20.

[0025] Furthermore, the barrel 20 is provided with a partition 20a, which divides the inner cavity of the barrel 20 into a first inner cavity 201 and a second inner cavity 202 that are interconnected. The air extraction component 30 is connected to the first inner cavity 201, and the material guiding component 50 is connected to the second inner cavity 202. The material is mainly filled in the second inner cavity 202.

[0026] Reference Figure 6 The bottom of the barrel 20 is provided with an air inlet 203 and a material inlet 204. The air inlet 203 is connected to the first inner cavity 201, and the material inlet 204 is connected to the second inner cavity 202. The top of the barrel 20 is provided with a sealing cover 205. A sliding sealing plate 60 is provided at the material inlet 204. When the sliding sealing plate 60 blocks the material inlet 204, the sealing cover 205 and the sliding sealing plate 60 seal the barrel 20 to form a sealed space. The air inlet 203 is sealed and connected to the air extraction assembly 30, and the material inlet 204 is sealed and connected to the material guiding assembly 50.

[0027] It should be noted that when the partition 20a is installed inside the barrel 20, it extends from the bottom to the top of the barrel 20. The top of the partition 20a is spaced from the sealing cover 205, so that the first inner cavity 201 and the second inner cavity 202 are kept in communication. In order to prevent the material in the second inner cavity 202 from entering the first inner cavity 201 and causing blockage of the air extraction component 30 during the air extraction process, a filter screen 70 is installed at the connection between the first inner cavity 201 and the second inner cavity 202.

[0028] In addition, the bottom of the second inner cavity 202 is provided with a base plate 80, the surface of the base plate 80 is an arc-shaped guide surface, and the base plate 80 has an opening 801, which is connected to the feed port 204.

[0029] Reference Figure 4 , Figure 5 The base 10 includes an upper base 101 and a lower base 102. The upper base 101 has an opening corresponding to the feed inlet 204 and an air guide part 103 corresponding to the air guide port 203. An air extraction sealing ring 104 is provided between the air guide part 103 and the air guide port 203. The air guide part 103 is provided with a first air nozzle 105 and a second air nozzle 106. The first air nozzle 105 and the second air nozzle 106 keep the first inner cavity 201 and the inner cavity of the base 10 connected.

[0030] Furthermore, refer to Figure 3 The vacuum assembly 30 includes an air pump motor 301 and a vacuum check valve 302 connected to the air pump motor 301. The vacuum check valve 302 is connected to the first air nozzle 105 through a hose. After the air pump motor 301 is started, the first air nozzle 105 can extract the air from the first inner cavity 201 and the second inner cavity 202, so that the inner cavity of the barrel 20 tends to be a vacuum, which facilitates the storage of materials in the second inner cavity 202 in a vacuum environment.

[0031] In addition, the air extraction assembly 30 also includes a pressure relief valve 303, which is connected to the second air nozzle 106 via a hose. When the sealing cover 205 of the barrel 20 needs to be opened, the pressure relief valve 303 opens, so that the air pressure in the first inner cavity 201 and the second inner cavity 202 is consistent with the outside. At this time, the sealing cover 205 at the top of the barrel 20 can be opened smoothly, making it convenient to add materials into the second inner cavity 202.

[0032] Furthermore, the weighing assembly 40 includes a weighing panel 401 supported at the bottom of the barrel 20, an upper support plate 402 supported at the bottom of the weighing panel 401, a weighing sensor 403 supported at the bottom of the upper support plate 402, and a lower support plate 404 supported at the bottom of the weighing sensor 403. The lower support plate 404 and the weighing sensor 403 are installed at the bottom of the inner cavity of the base 10. The pressure generated by the weight of the barrel 20 is transmitted to the weighing panel 401, and the weighing panel 401 transmits the pressure evenly to the upper support plate 402. The weighing sensor 403 can monitor the weight of the barrel 20. In this embodiment, the weighing sensor 403 is preferably a miniature parallel beam weighing sensor.

[0033] Furthermore, the material guiding assembly 50 includes a material guiding barrel 501 disposed in the base 10, a material guiding roller 502 disposed in the material guiding barrel 501, and a material guiding motor 503 connected to the material guiding roller 502. The material guiding motor 503 is a geared motor. The top of the material guiding barrel 501 is provided with a feed inlet 504 and the bottom is provided with a discharge outlet 505. The feed inlet 504 is sealed and connected to the material guiding port 204 through a material guiding sealing ring 506, and a sealing assembly 90 is installed at the discharge outlet 505.

[0034] Furthermore, the sealing assembly 90 includes a sealing motor 901 installed in the base 10, a sealing plate 902 connected to the sealing motor 901, the sealing motor 901 being able to drive the sealing plate 902 to rotate to seal the discharge port 505, and a discharge sleeve 200 installed on the base 10, the discharge sleeve 200 being located below the discharge port 505.

[0035] In practical use, the vending device 100 of this application can be applied to different fields for the sale of goods. When the vending device 100 is used for selling pet food, the material filled in the second inner cavity 202 of the barrel 20 is pet food. The actual steps and working principle of the vending device 100 when used for selling pet food are as follows: 1. Initial state - Vacuum storage: The barrel 20 is completely sealed by the sealing cap 205 and the sliding sealing plate 60, forming a closed space; The air extraction assembly 30 (air pump motor 301) extracts air from the first inner cavity 201 and the second inner cavity 202 (connected by the gap at the top of the partition 20a) through the air inlet 203 and the first air nozzle 105. The air extraction one-way valve 302 prevents air backflow, and the inside of the barrel 20 reaches a near-vacuum state, which greatly delays the oxidation and deterioration of the material (pet food) and ensures its freshness. At this time, the feed inlet 204 is blocked by the sliding sealing plate 60, and the discharge outlet 505 is blocked by the sealing assembly 90 (sealing plate 902).

[0036] User purchase trigger: When a user selects to purchase a certain amount of materials, the system is triggered, and the pressure in the barrel 20 needs to be released (the materials are ready to be exported). In order to successfully export the materials, the vacuum state of the barrel 20 needs to be released. When the pressure relief valve 303 is opened, external air enters the first inner cavity 201 through the second air nozzle 106 and the air guide port 203, and then enters the second inner cavity 202 through the gap at the top of the partition 20a (protected by the filter screen 70). The internal air pressure of the barrel 20 gradually increases until it is in equilibrium with the external atmospheric pressure, which allows the material to flow smoothly by gravity and reduces the difficulty of opening the feed port 204 later.

[0037] Open the material guide channel & start the discharge: Manually operate the sliding sealing plate 60 to move outward, release the blockage of the material guide port 204, and allow the material at the bottom of the second inner cavity 202 to flow out through the material guide port 204.

[0038] Material guiding assembly 50 starts: Material flows out from the material guiding port 204, is sealed and connected through the material guiding sealing ring 506, and enters the feed port 504 of the material guiding barrel 501. The material guiding motor 503 starts, driving the material guiding roller 502 to rotate. The blades or grooves of the material guiding roller 502 quantitatively convey the material from the feed port 504 to the discharge port 505.

[0039] Sealing assembly 90 opens: Sealing motor 901 starts, driving sealing plate 902 to rotate, opening the discharge port 505 at the bottom of guide barrel 501, and the material falls from the discharge port 505 of guide barrel 501 into the discharge sleeve 200 below, and finally into the user's container.

[0040] In order to quantitatively discharge and weigh the material in the barrel 20, the barrel 20 (including the material inside) is placed on the weighing component 40. The weighing sensor 403 can continuously and in real time monitor the total weight of the barrel 20 and its contents. When the material feeding component 50 starts to discharge the material, the total weight of the barrel 20 begins to decrease continuously. The weighing sensor 403 transmits the real-time data of the weight decrease to the control system. The control system compares the current weight reduction (i.e. the weight of the discharged material) with the preset weight purchased by the user in real time. Once the weight of the discharged material is detected to reach or be very close to the preset purchase amount, the control system immediately issues a stop signal.

[0041] Stop Export & Reset Seal: After the control system issues a stop signal, the guide motor 503 stops, the guide roller 502 stops rotating, and the material stops being transported; the sealing motor 901 rotates in the opposite direction, driving the sealing plate 902 to reset and reseal the outlet 505 to prevent residual material from leaking out or air from entering the guide barrel. The sliding sealing plate 60 is manually reset to reseal the guide port 204.

[0042] Re-vacuuming (restoring storage status): After the feed inlet 204 and the discharge outlet 505 are resealed, the pressure relief valve 303 is closed, and the vacuum assembly 30 (air pump motor 301) is restarted. Through the vacuum check valve 302 and the first air nozzle 105, the air in the inner cavity of the barrel 20 (first inner cavity 201 and second inner cavity 202) is re-extracted, and the inner cavity of the barrel 20 is restored to a near-vacuum state. The material re-enters the freshness storage mode, and the device returns to its initial state, waiting for the next purchase order.

[0043] Furthermore, in order to achieve intelligent control and operation, a control panel 300 is installed on one side of the base 10, and a main control circuit board 400 (the control system mentioned above) is installed inside the base 20. The main control circuit board 400 is electrically connected to the air extraction component 30, the weighing component 40, the material guiding component 50, the sealing component 90, and the pressure relief valve 303.

[0044] Once the vending machine is equipped with a control system, its specific working principle is as follows: The main control circuit board 400 continuously monitors the data from the weighing sensor 403. The vacuum assembly 30 (air pump motor 301) maintains the vacuum level inside the barrel 20 according to the preset strategy or the state after the last operation. The vacuum check valve 302 prevents air backflow, the pressure relief valve 303 is closed, the sliding sealing plate 60 is closed and blocks the material guide port 204, the material guide motor 503 stops, the sealing plate 902 of the sealing assembly 90 is closed and the discharge port 505 is blocked, the barrel 20 is sealed, the inside is close to vacuum, the material is kept fresh and stored in the second inner cavity 202, and the weighing sensor 403 reads W stably.

[0045] The user selects the weight of the required material as W1 through the control panel 300 and confirms the purchase (e.g., by pressing a button, scanning a code to pay, etc.). The control panel 300 sends the user instruction W1 to the main control circuit board 400. Upon receiving the W1 instruction, the main control circuit board 400 opens the pressure relief valve 303. External air enters the first inner cavity 201 through the second air nozzle 106 and the air guide port 203. The air then enters the second inner cavity 202 through the gap at the top of the partition 20a (protected by the filter screen 70). The air pressure inside the barrel 20 gradually increases until it is in equilibrium with the external atmospheric pressure.

[0046] The main control board 400 may be set with a fixed time delay value to ensure that the pressure is fully released (to avoid the material flow being hindered by negative pressure or the difficulty in opening the feed port). During the pressure release, the feed port 204 and the discharge port 505 remain closed.

[0047] After the air pressure balance is confirmed, the sliding sealing plate 60 is opened manually or mechanically to release the blockage of the feed inlet 204. The main control circuit board 400 starts the feed motor 503, which drives the feed roller 502 to rotate. At the same time, the main control circuit board 400 opens the sealing assembly 90 and starts the sealing motor 901 to rotate the sealing plate 902 to open the discharge port 505. The main control circuit board 400 begins to read the data of the weighing sensor 403 in real time and at high frequency.

[0048] Under the influence of gravity, the material inside the barrel flows out from the feed inlet 204 through the guide plate 80. The material enters the feed inlet 504 of the feed barrel 501 through the guide sealing ring 506. The rotating guide roller 502 conveys the material quantitatively from the feed inlet 504 to the discharge outlet 505. The material falls from the open discharge outlet 505 into the discharge sleeve 200 below and finally enters the user's container.

[0049] The main control circuit board 400 continuously compares the weight change of the barrel with the user-set required material weight W1. When the weight change of the barrel is equal to W1, the main control circuit board 400 immediately stops the material guide motor 503 (the material guide roller 502 stops rotating and stops conveying material). At the same time (or with a very short delay), the main control circuit board 400 closes the sealing assembly 90 (starts the sealing motor 901 to rotate the sealing plate 902 in the opposite direction to close the outlet 505). After the material guide stops, there may be a small amount of material in the pipe or roller, but the outlet is closed and will not continue to fall into the user's container.

[0050] After the material is discharged, the main control circuit board 400 closes the sliding sealing plate 60 (re-sealing the feed port 204). This action is performed immediately after closing the discharge port or before re-vacuuming.

[0051] The main control circuit board 400 controls the pressure relief valve 303 to remain closed, and the feed port 204 is resealed. After confirming that the feed port 204 is closed and the pressure relief valve 303 is closed, the main control circuit board 400 starts the air extraction assembly 30. The air pump motor 301 extracts air from the first inner cavity 201 and the second inner cavity 202 through the air extraction check valve 302, hose, first air nozzle 105, and air guide port 203. The air extraction check valve 302 prevents air backflow, and the inner cavity of the barrel 20 gradually returns to a near-vacuum state.

[0052] Once the target vacuum level is reached, the main control circuit board 400 stops the air pump motor 301, the vacuum check valve 302 automatically maintains the vacuum, and all actuators are reset: the pressure relief valve closes, the sealing plate closes, the sliding sealing plate closes, the air pump stops, and the feed motor stops.

[0053] The main control circuit board 400 continuously monitors the weighing and waits for the next user purchase instruction. The control panel 300 displays a "standby" or "ready" status.

[0054] In summary, the vacuuming of the barrel in this application creates a sealed space that isolates oxygen and moisture, thereby extending the storage period of highly sensitive materials inside the barrel and avoiding the problem of powdery / granular materials easily clumping due to moisture, leading to jamming and difficulty in quantitative output.

[0055] The barrel 20 is equipped with a partition 20a, which divides the inner cavity into a first inner cavity 201 and a second inner cavity 202 that are interconnected. The air extraction component 30 is connected to the first inner cavity 201, and the material guiding component 50 is connected to the second inner cavity 202. The partition design achieves physical isolation between the air extraction area and the material guiding area, avoids material blockage of the air extraction channel, and ensures vacuum stability.

[0056] The top of the barrel 20 is equipped with a sealing cap 205, and the guide port 204 is equipped with a sliding sealing plate 60. When materials are stored in the barrel 20, the sealing cap 205 and the sliding sealing plate 60 seal the barrel 20 to form a sealed space, and a vacuum is drawn by the vacuum assembly 30. When materials need to be discharged, the sliding sealing plate 60 is pulled out, and the inner cavity of the barrel 20 is connected to the guide assembly 50, which facilitates the smooth discharge of materials. When the sliding sealing plate 60 is pushed in, the inner cavity of the barrel 20 is separated from the guide assembly 50, and the barrel 20 is sealed again to form a sealed space. The sliding sealing plate 60 acts as a "dynamic valve" of the vacuum chamber. When it is closed, it can isolate the barrel 20 from the guide assembly 50 to maintain a vacuum storage environment. When it is pulled out, it can instantly connect the barrel and the guide barrel, and the materials can be discharged without depressurization, avoiding the energy consumption of repeated vacuuming for each shipment.

[0057] When the material is discharged from the material guide component 50, the weighing component 40 can monitor the weight change of the barrel 20 in real time. The weight change of the barrel 20 is the weight of the material discharged by the material guide component 50, which facilitates the setting and real-time monitoring of the discharge weight. Moreover, the weighing component 40 is directly supported at the bottom of the barrel and monitors the weight change of the barrel 20 without being affected by the vibration of the motors inside the entire equipment, thus improving the accuracy of the discharge weight monitoring.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vending device based on a gravity box, characterized in that, Including vending machines (100): The vending device (100) includes a barrel (20) mounted above a base (10) and the inner cavity of the barrel (20) forms a sealed space with the base (10); The base (10) is equipped with an air extraction component (30), a weighing component (40), and a material guiding component (50) at its bottom. The vacuum assembly (30) is connected to the inner cavity of the barrel (20) to create a vacuum in the inner cavity of the barrel (20); The weighing component (40) is used to weigh the barrel (20) and monitor its weight changes; The material guiding component (50) is connected to the inner cavity of the barrel (20) to quantitatively discharge the material in the inner cavity of the barrel (20) according to the weight change of the barrel (20).

2. The vending device based on a gravity box according to claim 1, characterized in that, The inner cavity of the barrel (20) is provided with a partition (20a), which divides the inner cavity of the barrel (20) into a first inner cavity (201) and a second inner cavity (202) that are interconnected. A filter screen (70) is installed at the connection between the top of the first inner cavity (201) and the second inner cavity (202). The bottom of the first inner cavity (201) is connected to the air extraction component (30), and the bottom of the second inner cavity (202) is connected to the material guiding component (50).

3. The vending device based on a gravity box according to claim 1, characterized in that, The top of the barrel (20) is provided with a sealing cap (205), the bottom of the inner cavity of the barrel (20) is provided with a bottom plate (80), the bottom center of the bottom plate (80) is provided with an opening (801), the bottom outer side of the barrel (20) is provided with an air guide port (203) and a material guide port (204), the air guide port (203) is connected to the first inner cavity (201), the material guide port (204) is connected to the second inner cavity (202), a sliding sealing plate (60) is provided at the material guide port (204), the sealing cap (205) and the sliding sealing plate (60) seal the barrel (20) to form a sealed space, the air guide port (203) is sealed and connected to the air extraction assembly (30), and the material guide port (204) is sealed and connected to the material guide assembly (50).

4. The vending device based on a gravity box according to claim 1, characterized in that, The air extraction assembly (30) includes an air pump motor (301) and an air extraction check valve (302) connected to the air pump motor (301), the air extraction check valve (302) being sealed to the air inlet (203).

5. The vending device based on a gravity box according to claim 1, characterized in that, The weighing assembly (40) includes a weighing panel (401) supported on the bottom of the barrel (20) and a weighing sensor (403) supported on the bottom of the weighing panel (401), the weighing sensor (403) being installed at the bottom of the inner cavity of the base (10).

6. The vending device based on a gravity box according to claim 1, characterized in that, The material guiding assembly (50) includes a material guiding barrel (501) disposed in the base (10), a material guiding roller (502) disposed in the material guiding barrel (501), and a material guiding motor (503) connected to the material guiding roller (502). The top of the feed hopper (501) is provided with a feed inlet (504) and the bottom is provided with a discharge outlet (505). The feed inlet (504) is sealed and connected with the feed inlet (204) at the bottom of the hopper (20). A sealing component (90) is installed at the discharge outlet (505).

7. The vending device based on a gravity box according to claim 6, characterized in that, The sealing assembly (90) includes a sealing motor (901) installed in the base (10) and a sealing plate (902) connected to the sealing motor (901). The sealing motor (901) drives the sealing plate (902) to rotate, thereby sealing the discharge port (505).

8. The vending device based on a gravity box according to claim 1, characterized in that, The base (10) includes an upper base (101) and a lower base (102). The upper base (101) is provided with an opening corresponding to the material guide port (204) and an air guide part (103) corresponding to the air guide port (203). An air extraction sealing ring (104) is provided between the air guide part (103) and the air guide port (203). The air guide part (103) is provided with a first air nozzle (105) and a second air nozzle (106). The first air nozzle (105) and the second air nozzle (106) keep the first inner cavity (201) and the inner cavity of the base (10) connected. The lower base (102) is equipped with a discharge sleeve (200), which is located below the discharge port (505).

9. The vending device based on a gravity box according to claim 1, characterized in that, The air extraction assembly (30) also includes a pressure relief valve (303), which is sealed to the air inlet (203).

10. The vending device based on a gravity box according to claim 1, characterized in that, A control panel (300) is installed on one side of the base (10). A main control circuit board (400) is provided inside the base (10). The main control circuit board (400) is electrically connected to the air extraction assembly (30), the weighing assembly (40), the material guiding assembly (50), the sealing assembly (90), and the pressure relief valve (303). The sealing assembly (90) includes a sealing motor (901) and a sealing plate (902).

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