Pet feeder

Abstract

The utility model relates to a kind of pet feeders, including grain storage barrel, grain outlet main part and vacuumizing component, grain storage barrel has the grain storage cavity, grain outlet and first air extraction passage of intercommunication, grain outlet main part is provided with grain outlet passage and second air extraction passage, vacuumizing component is located in grain outlet main part and includes electrically connected control mainboard and vacuum pump, and the air extraction end of vacuum pump is communicated with exhaust end second air extraction passage and atmosphere respectively.Wherein, grain storage barrel is detachably installed on the top of grain outlet main part, first air extraction passage and second air extraction passage are connected by first sealing ring butt joint, so that the air in the grain storage cavity of vacuum pump can be extracted to form vacuum environment.The grain storage barrel and grain outlet main part in the pet feeder of the application are not only convenient to assemble, but also can one-key vacuumize the grain storage barrel, realize vacuum grain storage, prevent grain from being damp and rotten, so as to guarantee the clean and sanitary of pet food.

Description

Technical Field

[0001] This utility model relates to the field of pet feeding utensils, and in particular to a pet feeder. Background Technology

[0002] With the improvement of living standards, more and more families are keeping pets. However, modern people live very fast-paced lives, and many people cannot feed their pets on time when they are at work or out. They usually put food in a food bowl before leaving home and let their pets eat on their own, but this may lead to irregular eating habits, causing indigestion and bringing unnecessary burdens to the owners. The emergence of pet feeders allows people to remotely control smart feeders to pour out food for their pets when they are not at home. This requires a separate food storage space on the feeder. To prevent the pet food in the storage space from getting damp or rotting, a vacuum sealer can be installed to vacuum the food storage space and store the pet food in a vacuum environment. However, existing pet feeders with vacuum storage functions have problems such as poor sealing of the storage space and complicated assembly of the storage chamber and the vacuum sealer. Utility Model Content

[0003] The present invention provides a pet feeder with a vacuum food storage container to solve the technical problems of poor sealing of the food storage space and complicated assembly of the food storage chamber and the vacuum pump in pet feeders with vacuum storage function.

[0004] This utility model discloses a pet feeder, comprising:

[0005] A grain storage hopper has a grain storage chamber, a grain outlet communicating with the grain storage chamber, and a first air extraction channel;

[0006] The main grain outlet is equipped with a grain outlet channel and a second air extraction channel. The grain outlet channel is used to discharge the grain flowing out of the grain outlet to the outside.

[0007] A vacuum assembly is provided on the grain dispensing body. The vacuum assembly includes a control main board and a vacuum pump that are electrically connected. The vacuum pump's suction end is connected to the second suction channel, and the vacuum pump's exhaust end is connected to the atmosphere.

[0008] The grain storage hopper and the grain dispensing body are detachably assembled. The first air extraction channel and the second air extraction channel are connected by a first sealing ring, so that the vacuum pump can draw away the air in the grain storage chamber to form a vacuum environment.

[0009] In one embodiment, at the junction of the grain storage tank and the grain dispensing body, one of the grain storage tank and the grain dispensing body is provided with a positioning boss, and the other is provided with a positioning groove. The positioning boss and the positioning groove are aligned and engaged vertically along the depth direction of the grain storage cavity.

[0010] The outer side wall of the positioning boss and the inner side wall of the positioning groove are provided with a plurality of annularly distributed limiting grooves, and the other side is provided with a plurality of annularly distributed limiting protrusions. The limiting grooves and the limiting protrusions correspond one-to-one and are aligned and engaged radially along the grain storage cavity to restrict the circumferential rotation of the positioning boss within the positioning groove, thereby limiting the circumferential positioning of the grain storage bucket and the grain dispensing body.

[0011] In one embodiment, a hanging platform is protruding within the limiting groove. At least one of the outer wall surfaces of the limiting protrusion and the hanging platform is provided with a guide surface. The guide surface extends along the depth direction inclined to the positioning groove. When the positioning protrusion is aligned and engaged with the positioning groove, the limiting protrusion and the hanging platform move relative to each other along the guide surface until the limiting protrusion engages with the limiting groove. At the same time, the limiting protrusion and the hanging platform are engaged along the depth direction of the positioning groove to restrict the positioning protrusion from disengaging from the positioning groove along the depth direction of the grain storage cavity, thereby vertically limiting the grain storage hopper and the grain dispensing body.

[0012] In one embodiment, the grain storage hopper includes a detachable inner liner and an outer shell, the grain storage cavity is formed in the inner liner, and the bottom of the inner liner and the bottom of the outer shell are aligned to form the grain outlet; the outer shell is sleeved on the outside of the inner liner, and the inner side wall of the outer shell and the outer side wall of the inner liner are spaced apart to form a first interlayer space.

[0013] The inner liner is provided with a first vent connecting the grain storage chamber and the first interlayer space, and the outer shell is provided with a second vent connecting the first interlayer space and the atmosphere. The first vent and the second vent are connected by a first vacuum hose to form the first air extraction channel; the first vacuum hose is located in the first interlayer space.

[0014] In one embodiment, a first insertable hollow column protrudes from the inner wall of the first interlayer space where the first air hole is located, and a second insertable hollow column protrudes from the inner wall of the first interlayer space where the second air hole is located. The two ends of the first vacuum hose are elastically sleeved on the first insertable hollow column and the second insertable hollow column, respectively.

[0015] In one embodiment, the grain storage bin includes a lid, a second sealing ring, and a bin body. The lid is sealed to the opening of the bin body by the second sealing ring. When the grain storage chamber is in a vacuum environment, the lid can be sealed to the opening of the bin body by vacuum negative pressure. The second sealing ring is located between the lid and the bin body and is elastically compressed. When the vacuum in the grain storage bin is released, the lid and the bin body are released from their adsorption restriction, and the elastic force released by the second sealing ring causes the lid to spring up and detach from the bin body, thereby opening the grain storage chamber.

[0016] In one embodiment, the bucket lid is provided with a vacuum release assembly, which includes an operation button, a first elastic element, a rocker button, a second elastic element, and a plug. The bucket lid has a third vent hole communicating with the grain storage chamber and the atmosphere. The outer side of the bucket lid is recessed to form a sliding groove and a clearance groove communicating with the sliding groove. The operation button is slidably mounted in the sliding groove via the first elastic element. The rocker button is rotatably connected to the outer side of the bucket lid. The second elastic element is disposed between the rocker button and the bucket lid. The first end of the rocker button is limited to the clearance groove and its part extends into the sliding groove. The plug is fixed to the second end of the rocker button and blocks the third vent hole. Pressing the operation button can trigger the second end of the rocker button to tilt upward, thereby causing the plug to disengage from the third vent hole.

[0017] In one embodiment, the bucket lid includes an inner lid and an outer lid. The inner lid is detachably and sealingly fastened to the opening of the bucket body by a second sealing ring. The third air hole, the sliding groove, and the clearance groove are all located on the side of the inner lid facing away from the grain storage chamber. The outer lid covers the side of the inner lid facing away from the grain storage chamber, and the outer lid and the inner lid enclose a second interlayer space. The vacuum release component is located within the second interlayer space. The operation button moves up and down within the second interlayer space.

[0018] In one embodiment, the vacuum assembly further includes an inlet solenoid valve, an exhaust solenoid valve, a low-pressure switch, and a high-pressure switch; the grain storage chamber, the first extraction channel, the second extraction channel, the inlet solenoid valve, the vacuum pump, and the exhaust solenoid valve are sequentially connected to the atmosphere.

[0019] The low-pressure switch is electrically connected to both the main board and the intake solenoid valve, and is used to detect the vacuum level of the grain storage chamber; the high-pressure switch is electrically connected to both the main board and the exhaust solenoid valve, and is used to detect the pressure at the exhaust port of the vacuum pump.

[0020] In one embodiment, a load-bearing sensor is provided at the bottom of the food dispensing body. The load-bearing sensor is electrically connected to the main board and is used to monitor the weight of pet food in the food storage chamber.

[0021] In one embodiment, the pet feeder further includes a feeding tray that is detachably attached to the food dispensing body and located below the outlet of the food dispensing channel.

[0022] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0023] This utility model provides a pet feeder, including a food storage container, a food dispensing body, and a vacuum assembly. The food storage container and the food dispensing body are detachably assembled. The food storage chamber and the vacuum pump in the vacuum assembly are sealed and connected through a first suction channel, a first sealing ring, and a second suction channel. The vacuum pump removes air from the food storage chamber to create a vacuum environment, achieving vacuum food storage, preventing the food from becoming damp and rotting, and ensuring the cleanliness and hygiene of the pet food. Furthermore, the connection between the food storage chamber and the vacuum pump through the first suction channel, the first sealing ring, and the second suction channel greatly improves the sealing performance during the vacuuming process and the sealing performance of the food storage chamber. Moreover, the vacuum assembly is installed inside the food dispensing body and is separate from the food storage container. The food storage container is detached from the food dispensing body and also separated from the vacuum assembly, making it more convenient to add pet food and clean the food storage container. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a pet feeder according to an embodiment of this application;

[0026] Figure 2 For along Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0027] Figure 3 for Figure 1 A schematic diagram of the assembly structure between the food storage bin and the food dispensing body in the pet feeder shown.

[0028] Figure 4 for Figure 3 A partial cross-sectional view of the assembly structure in the pet feeder shown;

[0029] Figure 5 for Figure 3 A schematic diagram of the explosion structure of the food storage bin and vacuum relief assembly in the pet feeder shown.

[0030] Figure 6 for Figure 2 An enlarged view of point A in the cross-sectional diagram shown;

[0031] Figure 7 for Figure 2 An enlarged view of point B in the cross-sectional diagram shown;

[0032] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0033] Figure 9 for Figure 2 The diagram shows the structure of the vacuum assembly in the pet feeder (the arrows indicate the airflow direction during vacuuming);

[0034] Figure 10 for Figure 2 Another view of the pet feeder shown.

[0035] The annotations in the attached figures are explained as follows:

[0036] 1. Pet feeder;

[0037] 10. Grain storage bin; 11. Grain storage chamber; 111. Grain outlet; 12. First air extraction channel; 121. First vacuum hose; 13. Positioning boss; 131. Limiting boss; 14. Inner liner; 141. First air vent; 142. First hollow insert column; 15. Outer shell; 151. Second air vent; 152. Second hollow insert column; 16. First interlayer space; 17. Bucket lid; 171. Third air vent; 172. Slide groove; 173. Clearance groove; 174. Inner cover; 175. Outer cover; 176. Second interlayer space; 18. Second sealing ring; 19. Bucket body;

[0038] 20. Grain dispensing body; 21. Grain dispensing channel; 22. Second air extraction channel; 221. Fourth air vent; 222. Third hollow insert column; 223. Second vacuum hose; 23. Positioning groove; 231. Limiting groove; 232. Hanging platform; 233. Guide surface; 24. Load cell;

[0039] 30. Vacuum assembly; 31. Main board; 32. Vacuum pump; 321. Suction end; 322. Exhaust end; 33. First sealing ring; 34. Inlet solenoid valve; 35. Exhaust solenoid valve; 36. Low-pressure switch; 37. High-pressure switch;

[0040] 40. Vacuum release assembly; 41. Operation button; 42. First elastic element; 43. Rocker button; 431. First end; 432. Second end; 44. Second elastic element; 45. Plug;

[0041] 50. Feeding dish. Detailed Implementation

[0042] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] Reference Figure 1-3 This application provides a pet feeder 1 with vacuum storage function, including a food storage bin 10, a food dispensing body 20, and a vacuum assembly 30. The food storage bin 10 is used to store food and is installed above the food dispensing body 20. The vacuum assembly 30 is located on the food dispensing body 20 and is used to remove air from the food storage bin 10 to achieve vacuum storage, preventing the food from getting damp and rotting, extending the shelf life of the food in the food storage bin 10, and ensuring the health and hygiene of the pet's food. Specifically, the food storage bin 10 has a food storage cavity 11 and a food outlet 111 and a first air extraction channel 12 communicating with the food storage cavity 11. The food outlet 111 is located at the bottom of the food storage cavity 11. The food dispensing body 20 has a food dispensing channel 21 and a second air extraction channel 22. The food dispensing channel 21 is used to discharge the food flowing out of the food outlet 111 to the outside for the pet to eat. The vacuum assembly 30 includes a control main board 31 and a vacuum pump 32 electrically connected. The control main board 31 integrates an operating unit for controlling the start and stop of the vacuum pump 32. Figure 9The vacuum pump 32's suction end 321 is connected to the second suction channel 22, and its exhaust end 322 is connected to the atmosphere. The grain storage hopper 10 is disassembled and assembled with the grain dispensing body 20. The first suction channel 12 and the second suction channel 22 are connected via a first sealing ring 33. The vacuum pump 32 is connected to the grain storage chamber 11, enabling it to remove air from the chamber and create a vacuum environment for vacuum grain storage.

[0046] This application provides a pet feeder 1, including a food storage container 10, a food dispensing body 20, and a vacuum assembly 30. The food storage container 10 and the food dispensing body 20 are detachably assembled. The food storage chamber 11 and the vacuum pump 32 in the vacuum assembly 30 are sealed and connected via a first suction channel 12, a first sealing ring 33, and a second suction channel 22. The vacuum pump 32 can remove air from the food storage chamber 11 to create a vacuum environment, achieving vacuum food storage, preventing food from becoming damp and rotting, and thus ensuring the cleanliness and hygiene of the pet food. Furthermore, the connection between the food storage chamber 11 and the vacuum pump 32 via the first suction channel 12, the first sealing ring 33, and the second suction channel 22 greatly improves the sealing performance during the vacuuming process and the sealing performance of the food storage chamber 11. Moreover, the vacuum assembly 30 is installed inside the food dispensing body 20 and is separate from the food storage container 10. The food storage container 10 is detached from the food dispensing body 20 and separated from the vacuum assembly 30, making it more convenient to add pet food and clean the food storage container 10.

[0047] Optionally, in conjunction with reference Figure 3 and Figure 4 In one embodiment, at the junction of the grain storage hopper 10 and the grain dispensing body 20, one of the grain storage hopper 10 and the grain dispensing body 20 is provided with a positioning boss 13, and the other is provided with a positioning groove 23. The positioning boss 13 and the positioning groove 23 are aligned and engaged vertically along the depth direction of the grain storage cavity 11, so that the grain storage hopper 10 and the grain dispensing body 20 are assembled vertically. Further, one of the outer side wall of the positioning boss 13 and the inner side wall of the positioning groove 23 is provided with a plurality of annularly distributed limiting grooves 231, and the other is provided with a plurality of annularly distributed limiting protrusions 131. The limiting grooves 231 and the limiting protrusions 131 correspond one-to-one and are aligned and engaged radially along the grain storage cavity 11 to restrict the circumferential rotation of the positioning boss 13 within the positioning groove 23, so that the grain storage hopper 10 and the grain dispensing body 20 are circumferentially limited.

[0048] Furthermore, combined Figure 2 and Figure 3In one embodiment, a mounting platform 232 protrudes from the limiting groove 231. At least one of the outer wall surfaces of the limiting protrusion 131 and the mounting platform 232 is provided with a guide surface 233. The guide surface 233 extends along the depth direction inclined to the positioning groove 23. When the positioning protrusion 13 is aligned and engaged in the positioning groove 23, the limiting protrusion 131 and the mounting platform 232 move relative to each other along the guide surface 233 until the limiting protrusion 131 is engaged in the limiting groove 231. At the same time, the limiting protrusion 131 and the mounting platform 232 are engaged along the depth direction of the positioning groove 23 to restrict the positioning protrusion 13 from disengaging from the positioning groove 23, so that the grain storage tank 10 and the grain dispensing body 20 are vertically and vertically limited.

[0049] It should be understood that, for this application, any means that enable the detachable assembly of the grain storage hopper 10 and the grain dispensing body 20 should be included. In this embodiment, the grain storage hopper 10 moves vertically (i.e., the depth direction of the grain storage cavity 11) and is fitted onto the grain dispensing body 20. This also allows the first air extraction channel 12 and the second air extraction channel 22 to be connected in one step through the first sealing ring 33, preventing misalignment between the two air extraction channels and improving the sealing performance of their connection. The circumferential or vertical diameter limit between the grain storage hopper 10 and the grain dispensing body 20 is to further improve the assembly stability of the two and play a role in preventing accidental contact. In other embodiments, a rotary fastening method can also be used to achieve detachable assembly of the grain storage bin 10 and the grain dispensing body 20. At the junction of the grain storage bin 10 and the grain dispensing body 20, one of the grain storage bin 10 and the grain dispensing body 20 is provided with an L-shaped protrusion, and the other is provided with an L-shaped groove (not shown in the figure). The L-shaped protrusion and the L-shaped groove are fitted together to achieve detachable assembly and relative positioning between the grain storage bin 10 and the grain dispensing body 20. In addition, the guide surface 233 can be an inclined surface or a curved surface, which serves to guide the fastening. In other embodiments of this application, it may not be provided. Therefore, in this application, the provision of the limiting protrusion 131, the limiting groove 231, the mounting platform 232, and the guide surface 233 is not limited.

[0050] Preferably, in conjunction with reference Figure 2 and Figure 5In one embodiment, the grain storage jar 10 includes a detachable inner liner 14 and an outer shell 15. A grain storage cavity 11 is formed in the inner liner 14, and the bottom of the inner liner 14 and the bottom of the outer shell 15 are aligned to form a grain outlet 111. The outer shell 15 is fitted over the outer side of the inner liner 14, and the inner sidewall of the outer shell 15 and the outer sidewall of the inner liner 14 are spaced apart to form a first interlayer space 16. It should be understood that the grain storage cavity 11 is under negative pressure in a vacuum state, and the external atmosphere will exert huge pressure on the entire grain storage jar 10. The inner liner 14 and the outer shell 15 are designed to form a double-layer structure to significantly improve the pressure resistance of the grain storage jar 10 and avoid deformation or cracking due to the thinness of a single-layer structure. Moreover, the double-layer structure also has an explosion-proof buffer function to improve the overall safety of the grain storage jar 10. Of course, provided that the material used for the grain storage jar 10 has sufficient strength and thickness, in other embodiments, the grain storage jar 10 can also adopt a single-layer structure design.

[0051] Furthermore, in conjunction with references Figure 6 and Figure 7 The inner liner 14 is provided with a first vent 141 connecting the grain storage chamber 11 and the first interlayer space 16, and the outer shell 15 is provided with a second vent 151 connecting the grain storage chamber 11 and the first interlayer space 16. The first vent 141 and the second vent 151 are connected by a first vacuum hose 121 to form the first suction channel 12 mentioned above. It should be understood that in other embodiments, the first vent 141 and the second vent 151 can be respectively opened at the bottom of the inner liner 14 and the outer shell 15, and the two vents can also form the first suction channel 12 by connecting them through a sealing ring. In this case, the first vacuum hose 121 is not required. In other embodiments, the first vacuum hose 121 can also be replaced by other rigid pipes such as steel pipes or copper pipes.

[0052] Preferably, in conjunction with reference Figure 6 and Figure 7 The first interlayer space 16 has a first insertable hollow column 142 protruding from the inner wall where the first vent 141 is located, and a second insertable hollow column 152 protruding from the inner wall where the second vent 151 is located. Both ends of the first vacuum hose 121 are elastically fitted onto the first insertable hollow column 142 and the second insertable hollow column 152, respectively, providing excellent sealing. In other embodiments, the first insertable hollow column 142 is not required; one end of the first vacuum hose 121 can be elastically engaged within the first vent 141. Alternatively, the second insertable hollow column 152 is not required; the other end of the first vacuum hose 121 can be elastically engaged with the second vent 151 and extend out of the second vent 151 for connection with the second suction channel 22. Therefore, in this application, the presence or absence of the first insertable hollow column 142 or the second insertable hollow column 152 is not limited.

[0053] Preferably, in conjunction with reference Figure 2 and Figure 5In one embodiment, the grain storage bin 10 includes a lid 17, a second sealing ring 18, and a bin body 19. The lid 17 is sealed and fastened to the opening of the bin body 19 by the second sealing ring 18. When the grain storage chamber 11 is in a vacuum environment, the lid 17 can be adsorbed and closed to the opening of the bin body 19 by the vacuum negative pressure, and the second sealing ring 18 is located between the lid 17 and the bin body 19 and is elastically compressed. When the vacuum in the grain storage bin 10 is released, the lid 17 and the bin body 19 are released from adsorption, and the elastic force released by the second sealing ring 18 will cause the lid 17 to spring up and detach from the bin body 19, thereby opening the grain storage chamber 11, which is convenient for the user to add grain or observe the components and their hygiene in the grain storage chamber 11. It should be noted that in other embodiments, the lid 17 is not required, and the user can also add grain or inspect the inside of the grain storage bin 10 through the grain outlet 111.

[0054] Preferably, in conjunction with reference Figure 5 and Figure 8 In one embodiment, the lid 17 is provided with a vacuum release assembly 40 that can be triggered with a single button. The vacuum release assembly 40 includes an operation button 41, a first elastic element 42, a rocker button 43, a second elastic element 44, and a plug 45. The lid 17 has a third vent 171 that connects the grain storage chamber 11 to the atmosphere. The outer side of the lid 17 (the side facing away from the grain storage chamber 11) is recessed to form a sliding groove 172 and a clearance groove 173 that communicates with the sliding groove. The operation button 41 is slidably mounted on the sliding groove 172 via the first elastic element 42. The rocker button 43 is rotatably connected to the lid 17. The second elastic element 44 is located between the first end 431 of the rocker button 43 and the lid 17. The first end 431 of the rocker button 43 is confined within the clearance groove 173 and partially extends into the sliding groove 172. The plug 45 is fixed to the second end 432 of the rocker button 43 and blocks the third vent 171. Pressing the operation button 41 triggers the second end 432 of the rocker button 43 to tilt upwards, causing the plug 45 to disengage from the third vent 171, opening the grain storage chamber 11 to the atmosphere and allowing air to enter, thus achieving a vacuum release process. It should be understood that by separately setting up the vacuum release component 40, when the user needs to dispense grain or detach the grain storage container 10, the user can first press the vacuum release button on the grain storage chamber 11, making it easier for the grain to flow out and separating the grain storage container 10 from the dispensing body 20 easier and faster. Of course, in other embodiments, the vacuum release component 40 is not required; opening the grain storage chamber 11 to the atmosphere through the grain outlet 111 or the first air extraction channel 12 can also achieve the purpose of vacuum release. Furthermore, the vacuum release component 40 can be optionally located at any position on the outer wall of the grain storage container 10, as long as the sliding direction of the operation button 41 always faces the grain storage chamber 11, and the position of the third vent 171 also needs to be adapted accordingly.

[0055] Preferably, combined with Figure 5 and Figure 8In one embodiment, the lid 17 includes an inner lid 174 and an outer lid 175. The inner lid 174 is sealed and fastened to the opening of the barrel body 19 by a second sealing ring 18. The third air hole 171, the sliding groove 172, and the clearance groove 173 are all provided on the side of the inner lid 174 facing away from the grain storage chamber 11. The outer lid 175 covers the side of the inner lid 174 facing away from the grain storage chamber 11, and the outer lid 175 and the inner lid 174 enclose a second interlayer space 176. The second interlayer space 176 is in communication with the atmosphere. The vacuum release component 40 is located in the second interlayer space 176, and the operation button 41 moves up and down in the second interlayer space 176. It should be understood that, firstly, the setting of the second interlayer space 176 makes the grain storage barrel 10 form a double-layer structure at the upper end, and the double-layer structure enhances the pressure resistance of the entire grain storage barrel 10; secondly, the second interlayer space 176 provides a more stable installation and movement space for the vacuum release component 40. Of course, in other embodiments, the lid 17 can also be configured as a single-layer structure.

[0056] Preferably, in conjunction with reference Figure 2 and Figure 9 In one embodiment, the vacuum assembly 30 further includes an inlet solenoid valve 34, an exhaust solenoid valve 35, a low-pressure switch 36, and a high-pressure switch 37. The grain storage chamber 11, the first suction channel 12, the second suction channel 22, the inlet solenoid valve 34, the vacuum pump 32, and the exhaust solenoid valve 35 are sequentially connected to the atmosphere to form a suction air path. Specifically, the low-pressure switch 36 is electrically connected to both the main board 31 and the inlet solenoid valve 34, and is used to detect the vacuum level of the grain storage chamber 11; the high-pressure switch 37 is electrically connected to both the main board 31 and the exhaust solenoid valve 35, and is used to detect the pressure at the exhaust port of the vacuum pump 32. The vacuuming process is as follows: Vacuum pump 32 is started, and the inlet solenoid valve 34 and outlet solenoid valve 35 are energized and closed, opening the suction path. At this time, vacuum pump 32 can remove air from the grain storage chamber 11. When the low-pressure switch 36 detects that the grain storage chamber 11 has reached the target vacuum level, vacuum pump 32 is de-energized, and inlet solenoid valve 34 and outlet solenoid valve 35 close after a slight delay (approximately 0.5 seconds) to block the suction path and maintain the vacuum environment in the grain storage chamber 11. Vacuum pump 32 releases a small amount of air through outlet solenoid valve 35 to prevent oil backflow and damage to vacuum pump 32. The setting of the two solenoid valves and pressure switch allows vacuum pump 32 to start only when needed and automatically stop when the target vacuum level is reached, while ensuring that air will not flow back and disrupt the vacuum or oil will flow back and damage vacuum pump 32 after shutdown. It should be noted that in other embodiments, the vacuuming process can be achieved by manually starting and stopping vacuum pump 32 without the need for solenoid valves and high / low pressure switches.

[0057] refer to Figure 7In one embodiment, the grain dispensing body 20 is provided with a fourth air hole 221 and a third hollow insert 222 that are connected and interlocked. The third hollow insert 222 and the vacuum pump 32 are connected through a second vacuum hose 223 to form the second air extraction channel 22 mentioned above. One end of the second vacuum hose 223 is elastically sleeved on the outside of the third hollow insert 222. In other examples, the third hollow insert 222 may not be provided, and one end of the second vacuum hose 223 may also be elastically engaged with the fourth air hole 221. In another embodiment, a steel pipe or a copper pipe may be used instead of the second vacuum hose 223.

[0058] Preferred, Reference Figure 10 In one embodiment, a load-bearing sensor 24 is provided at the bottom of the food dispensing body 20. The load-bearing sensor 24 is electrically connected to the main board 31. The load-bearing sensor 24 is used to monitor the weight of the food in the food storage chamber 11. The weight data of the food can be displayed on the outer surface of the food dispensing body 20 to remind the user to add food in time so that the pet does not go hungry. It should be noted that in other embodiments, the load-bearing sensor 24 is not required, and the user can also add food to the food storage chamber 11 according to experience and regularity.

[0059] Finally, optionally, refer to Figure 1 In one embodiment, the pet feeder 1 includes a feeding tray 50, which is detachably mounted to the food dispensing body 20 and located below the outlet of the food dispensing channel 21 to receive food for the pet to eat. Of course, in other embodiments, the pet feeder 1 does not need to be equipped with a feeding tray 50, and the user can directly use an ordinary bowl or container instead of a feeding tray and place it below the outlet of the food dispensing channel 21.

[0060] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A pet feeder, characterized in that, include: A grain storage hopper has a grain storage chamber, a grain outlet communicating with the grain storage chamber, and a first air extraction channel; The main grain outlet is equipped with a grain outlet channel and a second air extraction channel. The grain outlet channel is used to discharge the grain flowing out of the grain outlet to the outside. A vacuum assembly is provided on the grain dispensing body. The vacuum assembly includes a control main board and a vacuum pump that are electrically connected. The vacuum pump's suction end is connected to the second suction channel, and the vacuum pump's exhaust end is connected to the atmosphere. The grain storage hopper and the grain dispensing body are detachably assembled. The first air extraction channel and the second air extraction channel are connected by a first sealing ring, so that the vacuum pump can draw away the air in the grain storage chamber to form a vacuum environment.

2. The pet feeder according to claim 1, characterized in that, At the junction of the grain storage hopper and the grain dispensing body, one of the grain storage hopper and the grain dispensing body is provided with a positioning boss, and the other is provided with a positioning groove. The positioning boss and the positioning groove are aligned and engaged vertically along the depth direction of the grain storage cavity. The outer side wall of the positioning boss and the inner side wall of the positioning groove are provided with a plurality of annularly distributed limiting grooves, and the other side is provided with a plurality of annularly distributed limiting protrusions. The limiting grooves and the limiting protrusions correspond one-to-one and are aligned and engaged radially along the grain storage cavity to restrict the circumferential rotation of the positioning boss within the positioning groove, thereby limiting the circumferential positioning of the grain storage bucket and the grain dispensing body.

3. The pet feeder according to claim 2, characterized in that, A hanging platform is protruding within the limiting groove. At least one of the outer wall surfaces of the limiting protrusion and the hanging platform is provided with a guide surface. The guide surface extends along the depth direction inclined to the positioning groove. When the positioning protrusion is aligned and engaged in the positioning groove, the limiting protrusion and the hanging platform move relative to each other along the guide surface until the limiting protrusion engages in the limiting groove. At the same time, the limiting protrusion and the hanging platform are engaged along the depth direction of the positioning groove to restrict the positioning protrusion from disengaging from the positioning groove along the depth direction of the grain storage cavity, thereby vertically limiting the grain storage hopper and the grain dispensing body.

4. The pet feeder according to claim 1, characterized in that, The grain storage hopper includes a detachable inner liner and an outer shell. The grain storage cavity is formed in the inner liner. The bottom of the inner liner and the bottom of the outer shell are aligned and opened to form the grain outlet. The outer shell is sleeved on the outside of the inner liner. The inner wall of the outer shell and the outer wall of the inner liner are spaced apart to form a first interlayer space. The inner liner is provided with a first vent connecting the grain storage chamber and the first interlayer space, and the outer shell is provided with a second vent connecting the first interlayer space and the atmosphere. The first vent and the second vent are connected by a first vacuum hose to form the first air extraction channel.

5. The pet feeder according to claim 4, characterized in that, The first interlayer space has a first insertable hollow column protruding from the inner wall where the first air hole is located, and the first interlayer space has a second insertable hollow column protruding from the inner wall where the second air hole is located. The two ends of the first vacuum hose are elastically sleeved on the first insertable hollow column and the second insertable hollow column, respectively.

6. The pet feeder according to claim 1, characterized in that, The grain storage bin includes a lid, a second sealing ring, and a bin body. The lid is sealed to the opening of the bin body by the second sealing ring. When the storage chamber is in a vacuum environment, the lid can be sealed to the opening of the bin body by vacuum negative pressure. The second sealing ring is located between the lid and the bin body and is elastically compressed. When the vacuum in the grain storage bin is released, the lid and the bin body are released from their adsorption restriction, and the elastic force released by the second sealing ring will cause the lid to spring up and detach from the bin body, thereby opening the storage chamber.

7. The pet feeder according to claim 6, characterized in that, The bucket lid is equipped with a vacuum release assembly, which includes an operation button, a first elastic element, a rocker button, a second elastic element, and a plug. The bucket lid has a third vent hole connecting the grain storage chamber to the atmosphere. The outer side of the bucket lid is recessed to form a sliding groove and a clearance groove communicating with the sliding groove. The operation button is slidably mounted in the sliding groove via the first elastic element. The rocker button is rotatably connected to the outer side of the bucket lid, and the second elastic element is disposed between the rocker button and the bucket lid. The first end of the rocker button is confined within the clearance groove and partially extends into the sliding groove. The plug is fixed to the second end of the rocker button and blocks the third vent hole. Pressing the operation button can trigger the second end of the rocker button to tilt upward, thereby causing the plug to disengage from the third vent hole.

8. The pet feeder according to claim 7, characterized in that, The barrel lid includes an inner lid and an outer lid. The inner lid is detachably and sealingly fastened to the opening of the barrel body by the second sealing ring. The third air hole, the sliding groove, and the clearance groove are all located on the side of the inner lid facing away from the grain storage chamber. The outer lid covers the side of the inner lid facing away from the grain storage chamber, and the outer lid and the inner lid enclose a second interlayer space. The vacuum release component is located within the second interlayer space. The operation button moves up and down within the second interlayer space.

9. The pet feeder according to any one of claims 1-8, characterized in that, The vacuum assembly also includes an inlet solenoid valve, an exhaust solenoid valve, a low-pressure switch, and a high-pressure switch; the grain storage chamber, the first extraction channel, the second extraction channel, the inlet solenoid valve, the vacuum pump, and the exhaust solenoid valve are sequentially connected to the atmosphere; The low-pressure switch is electrically connected to both the main board and the intake solenoid valve, and is used to detect the vacuum level of the grain storage chamber; the high-pressure switch is electrically connected to both the main board and the exhaust solenoid valve, and is used to detect the pressure at the exhaust port of the vacuum pump.

10. The pet feeder according to any one of claims 1-8, characterized in that, The bottom of the food dispensing body is equipped with a load-bearing sensor, which is electrically connected to the main board. The load-bearing sensor is used to monitor the weight of pet food in the food storage chamber. And / or, the pet feeder further includes a feeding tray, which is detachably mounted to the food dispensing body and located below the outlet of the food dispensing channel.

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