Vacuum feeder

Abstract

The utility model relates to the field of pet feeding devices, and discloses a vacuum feeder which comprises a grain barrel, a feeding device, a feeding device and a control device. The bottom of the grain barrel is provided with a barrel-shaped part with an upward opening, and a leakage hole is formed in the bottom wall of the barrel-shaped part; the grain hopper is installed in the barrel-shaped part, the outer peripheral edge of the top of the grain hopper is attached to the inner peripheral wall of the barrel-shaped part in a sealed mode, and grain outlet holes are formed in the grain hopper; the grain discharging rotating block is rotatably mounted in the barrel-shaped part; the grain discharging rotating block is mounted on one side of the bottom of the grain hopper to seal the grain discharging hole, and the periphery of the grain discharging rotating block is attached to the inner circumferential wall of the barrel-shaped part; a through storage through hole is further formed in the grain discharging rotating block; the vacuumizing device is used for vacuumizing the inner cavity of the grain barrel; the sealing plate and the food discharging rotating block rotate synchronously, the sealing plate is arranged on one side of the bottom of the bottom wall of the barrel-shaped part, the sealing plate is provided with a material passing hole through which the pet food can penetrate, and the material passing hole directly faces the material storage through hole. According to the vacuum feeder, the possibility that pet food in the food barrel is affected with damp can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of pet feeding devices, in particular to a vacuum feeder. Background Art

[0002] A pet feeder is a device or container that automatically or periodically provides food and water to pets. It is commonly used for feeding dogs, cats, and other small pets. A vacuum feeder is an upgrade to a pet feeder, capable of vacuuming the food container and automatically feeding pets.

[0003] In the existing vacuum feeder, during the actual feeding process, external water vapor can enter the inner cavity of the grain barrel along the discharge channel, which may cause the pet food inside the grain barrel to become damp. Therefore, a large amount of pet food cannot generally be stored in the grain barrel.

[0004] In view of this, it is necessary to design a vacuum feeder that can reduce the possibility of pet food in the food bucket getting wet.

[0005] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Summary of the Invention

[0006] The invention provides a vacuum feeder, which can reduce the possibility of pet food in a food barrel getting wet.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A vacuum feeder comprising:

[0009] The grain barrel has a barrel-shaped portion with an upward opening at the bottom, and a material leakage hole is provided on the bottom wall of the barrel-shaped portion;

[0010] A grain hopper is installed in the barrel-shaped portion, with the outer edge of the top of the grain hopper sealingly attached to the inner wall of the barrel-shaped portion and provided with a grain outlet hole;

[0011] a grain discharging rotating block rotatably mounted in the barrel-shaped portion; the grain discharging rotating block is mounted on one side of the bottom of the grain hopper to close the grain discharging hole, and the outer periphery of the grain discharging rotating block is in contact with the inner circumferential wall of the barrel-shaped portion; the grain discharging rotating block is further provided with a penetrating material storage hole;

[0012] A vacuum device, used for vacuuming the inner cavity of the grain barrel;

[0013] A sealing plate, which rotates synchronously with the food discharging rotating block and is arranged on one side of the bottom of the bottom wall of the barrel-shaped portion, wherein the sealing plate has a feeding hole for pet food to pass through, and the feeding hole is opposite to the material storage through hole;

[0014] When the grain outlet rotating block rotates to the first set angle, the storage through hole is completely misaligned with the grain outlet hole, the grain outlet rotating block closes the grain outlet hole, and the storage through hole, the grain leakage hole and the material passing hole are in communication with each other; when the grain outlet rotating block rotates to the second set angle, the storage through hole and the grain outlet hole are in communication with each other, the material passing hole and the storage through hole are not in communication, and the sealing plate closes the grain leakage hole.

[0015] Optionally, the grain outlet rotating block comprises a rotating seat and a silica gel cover body arranged on the rotating seat, and the rotating seat and the silica gel cover body are clamped with each other; a top surface of the silica gel cover body is provided with a flexible protruding part for closing the grain outlet hole.

[0016] The grain outlet hole has a first side surface capable of scraping the flexible protruding part, and an included angle between the first side surface and a surface of the flexible protruding part is greater than 180°.

[0017] Optionally, a top surface of the flexible protruding part is an outward convex arc surface.

[0018] Optionally, the vacuum feeder further comprises a rotating shaft and a rotating driving device for driving the rotating shaft to rotate.

[0019] The rotating shaft penetrates into the barrel-shaped part and is fixedly connected with the grain outlet rotating block and is not connected with the grain hopper.

[0020] A top portion of the rotating shaft is further provided with a material stirring block for stirring pet food, and the material stirring block is located on one side of the top portion of the grain hopper.

[0021] Optionally, the vacuum feeder further comprises a first annular sealing ring and a sealing gland press-fitted on the grain barrel.

[0022] A top portion of the grain barrel is provided with an opening, the first annular sealing ring surrounds the opening, and the sealing gland press-fits the first annular sealing ring on the top portion of the grain barrel to seal the opening.

[0023] The first annular sealing ring is a hollow annular structure, and a first annular protrusion is arranged on an annular surface of the grain barrel for supporting the first annular sealing ring, the first annular protrusion faces the first annular sealing ring and surrounds the opening.

[0024] A second annular protrusion is arranged on the sealing gland, and the second annular protrusion is arranged opposite to the first annular protrusion.

[0025] Optionally, the vacuum feeder further comprises a support seat and a grain barrel seat mounted on one side of a bottom portion of the support seat, the support seat supports the grain barrel, and the grain barrel seat supports the support seat.

[0026] The grain barrel seat and the support seat form a grain outlet channel, and the grain outlet channel can communicate with the grain outlet hole.

[0027] Optionally, the vacuum feeder further comprises a grain basin for holding pet food and an automatic weighing device arranged at one side of the bottom of the grain basin.

[0028] The automatic weighing device is electrically connected to the rotary driving device, when the pet food in the grain basin is lower than a set weight, the rotary driving device can drive the grain outlet rotary block to rotate to output pet food, and when the pet food in the grain basin is higher than the set weight, the rotary driving device can drive the grain outlet rotary block to rotate to stop outputting pet food.

[0029] Optionally, the grain barrel is provided with two barrel-shaped parts, each of which is mounted on the grain hopper and the grain outlet rotary block.

[0030] Optionally, the top surface of the stirring block is an outwardly convex arc surface.

[0031] Optionally, the sealing plate comprises a frame body and an annular sealing strip mounted on the frame body.

[0032] Compared with the prior art, the present application has the following beneficial effects:

[0033] The vacuum feeder provided by the present application has the following beneficial effects: in the pet food discharging process, the pet food first enters the storage hole from the grain outlet hole, at this time, the material passing hole and the storage hole are blocked by the bottom wall of the barrel-shaped part, and the material leaking hole is closed by the sealing plate, so that the external water vapor cannot enter the storage space of the grain barrel through the grain outlet hole; the grain outlet rotary block continues to rotate, so that the storage hole and the grain outlet hole are completely staggered, at this time, the storage hole, the material leaking hole and the material passing hole are communicated with each other to output pet food to feed the pet, and at this time, the grain outlet rotary block closes the grain outlet hole, that is, the water vapor cannot enter the storage space of the grain barrel along the grain outlet hole. The vacuum feeder in the embodiment can better improve the sealing effect, can effectively prevent water vapor or other impurities from entering the storage space along the discharging channel, and can effectively prevent the pet food in the storage space from being damp.

[0034] The present application has other characteristics and advantages, which will be apparent from and / or set forth in the accompanying drawings and the following detailed description, which together serve to explain certain principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, below the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for ordinary skilled in the art, other drawings can also be obtained without creative effort based on these drawings.

[0036] Figure 1 is an exploded schematic view of the vacuum feeder provided by the embodiment of the present application;

[0037] Figure 2 is a top view schematic view of the vacuum feeder provided by the embodiment of the present application;

[0038] Figure 3 is Figure 2 is a schematic view of the A-A cross-sectional structure of the vacuum feeder in the embodiment;

[0039] Figure 4 is Figure 2 is an enlarged schematic view of the vacuum feeder in the A position in the embodiment;

[0040] Figure 5 is Figure 2 is an enlarged schematic view of the vacuum feeder in the B position in the embodiment;

[0041] Figure 6 is a top view schematic view of the vacuum feeder in the exploded state provided by the embodiment of the present application;

[0042] Figure 7 is Figure 1 is an exploded schematic view of the vacuum feeder in another viewing direction in the embodiment;

[0043] Figure 8 is a schematic view of the three-dimensional structure of the grain barrel provided by the embodiment of the present application;

[0044] Figure 9 is a schematic view of the three-dimensional structure of the support seat provided by the embodiment of the present application;

[0045] Figure 10 is a schematic view of the three-dimensional structure of the vacuum feeder provided by the embodiment of the present application.

[0046] The accompanying drawings: 1, grain barrel; 11, material leakage hole; 2, grain hopper; 21, grain outlet; 3, grain outlet rotating block; 31, material storage through hole; 301, rotating seat; 302, silica gel cover; 4, vacuumizing device; 401, rotating shaft; 403, rotating driving device; 5, sealing plate; 51, material passing hole; 6, sealing gland; 601, first annular sealing ring; 602, first annular protrusion; 603, second annular protrusion; 7, grain basin; 8, automatic weighing device; 9, support seat; 10, grain barrel seat. DETAILED DESCRIPTION

[0047] To explain the possible application scenarios, technical principles, specific implementation schemes, and the purposes and effects that can be achieved of the present application in detail, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0048] In this paper, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0049] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0050] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this paper generally represents that the associated objects before and after are a "or" logical relationship.

[0051] In the present application, the terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0052] Without more limitations, in the present application, the phrases "include", "contain", "have" or other similar expressions used in the sentence are intended to cover non-exclusive inclusion, and these expressions do not exclude the presence of other elements in the process, method or product including the described elements, so that the process, method or product including a series of elements can not only include those limited elements, but also include other elements not explicitly listed, or also include the elements inherent to such process, method or product.

[0053] As the same understanding in the "Examination Guidelines", in this application, "greater than", "less than", "exceed" and the like are understood as not including the number; "above", "below", "within" and the like are understood as including the number. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0054] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawing, and is only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and does not indicate or imply that the indicated device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0055] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set" and the like should be broadly understood. For example, the "connection" can be fixed connection, or detachable connection, or integral setting; it can be mechanical connection, or electrical connection, or communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] In view of the defects of the existing vacuum feeding device, the applicant, based on many years of rich practical experience and professional knowledge in designing and manufacturing such products, and with the use of theory, actively researches and innovates, in order to create a technology that can solve the defects in the prior art, so that the vacuum feeding device is more practical. After continuous research, design, and repeated trial of samples and improvement, the present invention is finally created.

[0057] Please refer to Figures 1 to 9 The embodiment of the present application provides a vacuum feeding device, comprising:

[0058] The grain barrel 1 has a barrel-shaped part 101 with an opening upward at the bottom, and the bottom wall of the barrel-shaped part 101 is provided with a material leakage hole 11;

[0059] A grain hopper 2 is installed in the barrel-shaped part 101, and the top outer periphery of the grain hopper 2 is sealed to the inner periphery wall of the barrel-shaped part 101, and is provided with a grain outlet hole 21;

[0060] A grain outlet rotating block 3 is rotatably installed in the barrel-shaped part 101; the grain outlet rotating block 3 is installed on one side of the bottom of the grain hopper 2 to close the grain outlet hole 21, and the outer periphery of the grain outlet rotating block 3 is sealed to the inner periphery wall of the barrel-shaped part 101; the grain outlet rotating block 3 is further provided with a through storage through hole 31;

[0061] A vacuumizing device 4 is used to vacuumize the inner cavity of the grain barrel 1;

[0062] A sealing plate 5 rotates synchronously with the grain outlet rotating block 3, and is arranged on one side of the bottom of the bottom wall of the barrel-shaped part 101; the sealing plate 5 has a material passing hole 51 through which the pet food passes, and the material passing hole 51 is opposite to the storage through hole 31;

[0063] When the grain outlet rotating block 3 rotates to a first set angle, the storage through hole 31 is completely misaligned with the grain outlet hole 21, the grain outlet rotating block 3 closes the grain outlet hole 21, and the storage through hole 31, the material leakage hole 11 and the material passing hole 51 are in communication with each other; when the grain outlet rotating block 3 rotates to a second set angle, the storage through hole 31 is in communication with the grain outlet hole 21, the material passing hole 51 and the storage through hole 31 are not in communication, and the sealing plate 5 closes the material leakage hole 11.

[0064] In the pet food outlet process of the vacuum feeder of the embodiment, the pet food first enters the storage through hole 31 from the grain outlet hole 21, and at this time, the material passing hole 51 and the storage through hole 31 are blocked by the bottom wall of the barrel-shaped part 101, and the sealing plate 5 closes the material leakage hole 11, so that the external water vapor cannot enter the storage space of the grain barrel 1 through the grain outlet hole 21; the grain outlet rotating block 3 continues to rotate, so that the storage through hole 31 is completely misaligned with the grain outlet hole 21, at this time, the storage through hole 31, the material leakage hole 11 and the material passing hole 51 are in communication with each other to output the pet food to feed the pet, and at this time, the grain outlet rotating block 3 closes the grain outlet hole 21, that is, the water vapor cannot enter the storage space of the grain barrel 1 along the grain outlet hole 21. The vacuum feeder in the embodiment can better improve the sealing effect, can effectively prevent the water vapor or other impurities from entering the storage space along the outlet channel, and can effectively prevent the pet food in the storage space from being damp.

[0065] Optionally, the grain outlet rotating block 3 comprises a rotating seat 301 and a silica gel cover 302 covering the rotating seat 301, and the rotating seat 301 and the silica gel cover 302 are clamped with each other; the top surface of the silica gel cover 302 is provided with a flexible protruding part for closing the grain outlet hole 21; the grain outlet hole 21 has a first side surface capable of scraping the flexible protruding part, and the included angle between the first side surface and the surface of the flexible protruding part is greater than 180°.

[0066] Specifically, the silica gel cover of the cover-shaped structure can seal the gap between the rotating seat 301 and the inner circumferential wall of the barrel-shaped part 101 and the grain outlet 21, thereby achieving better sealing effect. In addition, the flexible protruding part is arranged to improve the sealing effect of the grain outlet 21. It should be further pointed out that the included angle between the first side surface and the surface of the flexible protruding part is greater than 180°, which can effectively prevent the pet food from being crushed.

[0067] Optionally, the top surface of the flexible protruding part is an outward convex arc surface.

[0068] Optionally, the vacuum feeder further comprises a rotating shaft 401 and a rotating driving device 403 for driving the rotating shaft 401 to rotate; the rotating shaft 401 penetrates the barrel-shaped part 101 and is fixedly connected with the grain outlet rotating block 3 and is not connected with the hopper 2; the top of the rotating shaft 401 is further provided with a stirring block 402 for stirring the pet food, and the stirring block 402 is located on one side of the top of the hopper 2.

[0069] It should be pointed out that the rotating shaft 401 is fixedly connected with the grain outlet rotating block 3 and the sealing plate 5, thereby driving the grain outlet rotating block 3 and the sealing plate 5 to rotate synchronously.

[0070] In addition, the arrangement of the stirring block 402 can stir the pet food, so that the overall discharging speed of the pet food remains stable. The stirring block 402 can stir the pet food, thereby destroying the stability of the accumulation of the pet food.

[0071] Optionally, the vacuum feeder further comprises a first annular sealing ring 601 and a sealing gland 6 press-fitted on the grain barrel 1; the top of the grain barrel 1 is provided with an opening, the first annular sealing ring 601 surrounds the opening, and the sealing gland 6 presses the first annular sealing ring 601 on the top of the grain barrel 1 to seal the opening. The first annular sealing ring 601 is a hollow annular structure, and the annular surface of the grain barrel 1 for supporting the first annular sealing ring 601 is provided with a first annular protrusion 602, the first annular protrusion 602 faces the first annular sealing ring 601 and surrounds the opening; the sealing gland 6 is provided with a second annular protrusion 603, and the second annular protrusion 603 is arranged opposite to the first annular protrusion 602.

[0072] Specifically, the first annular protrusion 602, the second annular protrusion 603 and the first annular sealing ring 601 cooperate with each other in the embodiment, which can better seal the gap between the sealing gland 6 and the grain barrel 1. It should be pointed out in detail that when the sealing gland 6 is press-fitted on the grain barrel 1, the cross section of the first annular sealing ring 601 is pressed into a shape with thick ends and narrow middle, that is, similar to a horizontally placed "8" cross section, and the first annular sealing ring 601 has better sealing effect and is less likely to leak air.

[0073] Optionally, the vacuum feeder further comprises a support base 9 and a grain barrel base 10 installed on one side of the bottom of the support base 9, the support base 9 supports the grain barrel 1, and the grain barrel base 10 supports the support base 9; the grain barrel base 10 and the support base 9 form a grain outlet channel, and the grain outlet channel is in communication with the grain outlet hole 21.

[0074] Optionally, the vacuum feeder further comprises a grain basin 7 for supporting pet food and an automatic weighing device 8 arranged on one side of the bottom of the grain basin 7; the automatic weighing device 8 is electrically connected to the rotary driving device 403, when the pet food in the grain basin 7 is lower than a set weight, the rotary driving device 403 can drive the grain outlet rotating block 3 to rotate to output the pet food; when the pet food in the grain basin 7 is higher than the set weight, the rotary driving device 403 can drive the grain outlet rotating block 3 to rotate to stop outputting the pet food.

[0075] The vacuum feeder in the embodiment can automatically feed pets based on the weight of the pet food in the grain basin 7, thereby reducing the burden of the user.

[0076] Optionally, the grain barrel 1 is provided with two barrel-shaped parts 101, and each barrel-shaped part 101 is installed on the grain hopper 2 and the grain outlet rotating block 3.

[0077] Optionally, the top surface of the stirring block 402 is an outwardly convex arc surface.

[0078] Optionally, the sealing plate 5 comprises a frame body 501 and an annular sealing strip 502 installed on the frame body 501.

[0079] It should be further pointed out that, Figure 10 Another vacuum feeder.

[0080] Finally, it should be pointed out that, although the above embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solution obtained by replacing or modifying the equivalent structure or equivalent process based on the essential concept of the present application, using the content described in the specification and drawings of the present application, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.

Claims

1. A vacuum feeder, characterized in that: include: A grain barrel (1) has a barrel-shaped portion (101) with an upward opening at the bottom, and a material leakage hole (11) is provided on the bottom wall of the barrel-shaped portion (101); A grain hopper (2) is installed in the barrel-shaped portion (101), and the outer peripheral edge of the top of the grain hopper (2) is sealed against the inner peripheral wall of the barrel-shaped portion (101), and is provided with a grain outlet hole (21); A grain discharging rotating block (3) is rotatably mounted in the barrel-shaped portion (101); the grain discharging rotating block (3) is mounted on one side of the bottom of the grain hopper (2) to close the grain discharging hole (21), and the outer periphery of the grain discharging rotating block (3) is in contact with the inner peripheral wall of the barrel-shaped portion (101); a through-hole (31) for storing materials is also provided on the grain discharging rotating block (3); A vacuum device (4) for vacuuming the inner cavity of the grain barrel (1); A sealing plate (5) rotates synchronously with the food discharging rotating block (3) and is arranged on one side of the bottom of the bottom wall of the barrel-shaped portion (101). The sealing plate (5) has a feeding hole (51) for pet food to pass through, and the feeding hole (51) is opposite to the material storage through hole (31); When the grain discharging rotating block (3) rotates to a first set angle, the material storage through hole (31) and the grain discharging hole (21) are completely offset, the grain discharging rotating block (3) closes the grain discharging hole (21), and the material storage through hole (31), the leakage hole (11) and the feeding hole (51) are interconnected; when the grain discharging rotating block (3) rotates to a second set angle, the material storage through hole (31) and the grain discharging hole (21) are interconnected, the feeding hole (51) and the material storage through hole (31) are not connected, and the sealing plate (5) closes the leakage hole (11).

2. The vacuum feeder according to claim 1, characterized in that The grain discharging rotating block (3) comprises a rotating seat (301) and a silicone cover (302) disposed on the rotating seat (301), and the rotating seat (301) and the silicone cover (302) are mutually engaged; a flexible protrusion is provided on the top surface of the silicone cover (302) for closing the grain discharging hole (21); The grain outlet hole (21) has a first side surface capable of scraping the flexible protrusion, and the angle between the first side surface and the surface of the flexible protrusion is greater than 180°.

3. The vacuum feeder according to claim 2, characterized in that The top surface of the flexible protrusion is an outwardly convex arc surface.

4. The vacuum feeder according to claim 1, wherein: It also includes a rotating shaft (401) and a rotating drive device (403) for driving the rotating shaft (401) to rotate; The rotating shaft (401) penetrates the barrel-shaped portion (101) and is fixedly connected to the grain discharging rotating block (3), and is not connected to the grain hopper (2); A stirring block (402) for stirring pet food is also installed on the top of the rotating shaft (401), and the stirring block (402) is located on one side of the top of the food hopper (2).

5. The vacuum feeder according to claim 4, characterized in that It also includes a first annular sealing ring (601) and a sealing gland (6) press-fitted onto the grain barrel (1); The top of the grain barrel (1) is provided with an opening, the first annular sealing ring (601) surrounds the opening, and the sealing gland (6) presses the first annular sealing ring (601) on the top of the grain barrel (1) to seal the opening; The first annular sealing ring (601) is a hollow annular structure, and a first annular protrusion (602) is provided on the annular surface of the grain barrel (1) for supporting the first annular sealing ring (601), and the first annular protrusion (602) faces the first annular sealing ring (601) and surrounds the opening; A second annular protrusion (603) is provided on the sealing gland (6), and the second annular protrusion (603) is arranged opposite to the first annular protrusion (602).

6. The vacuum feeder according to claim 5, characterized in that It also includes a support seat (9) and a grain barrel seat (10) installed on one side of the bottom of the support seat (9), wherein the support seat (9) supports the grain barrel (1), and the grain barrel seat (10) supports the support seat (9); The grain barrel seat (10) and the support seat (9) form a grain outlet passage, and the grain outlet passage can be connected to the grain outlet hole (21).

7. The vacuum feeder according to claim 6, characterized in that It also includes a food bowl (7) for holding pet food and an automatic weighing device (8) arranged on one side of the bottom of the food bowl (7); The automatic weighing device (8) is electrically connected to the rotary drive device (403). When the pet food in the food bowl (7) is lower than a set weight, the rotary drive device (403) can drive the food discharging rotary block (3) to rotate to output the pet food; when the pet food in the food bowl (7) is higher than a set weight, the rotary drive device (403) can drive the food discharging rotary block (3) to rotate to stop outputting the pet food.

8. The vacuum feeder according to claim 1, wherein The grain barrel (1) is provided with two barrel-shaped parts (101), and each barrel-shaped part (101) is installed on the grain hopper (2) and the grain discharging rotating block (3).

9. The vacuum feeder according to claim 4, characterized in that The top surface of the stirring block (402) is an outwardly convex arc surface.

10. The vacuum feeder according to claim 1, wherein The sealing plate (5) comprises a frame (501) and an annular sealing strip (502) mounted on the frame (501).

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