Vacuum feeder

Abstract

The invention 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 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 regularly provides food and water to pets. It is usually used to feed dogs, cats, and other small pets. A vacuum feeder is an upgrade of a pet feeder. It is a device that can vacuum the inner cavity of the food barrel and automatically feed 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 get damp. Therefore, generally, a large amount of pet food cannot 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 barrel getting damp.

[0005] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used 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 that pet food in a food barrel is damp.

[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 opening facing upward 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, and the outer peripheral edge of the top of the grain hopper is sealed against the inner peripheral wall of the barrel-shaped portion and is provided with a grain outlet hole;

[0011] A grain discharging rotating block is 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 circumference of the grain discharging rotating block is in contact with the inner circumferential wall of the barrel-shaped portion; a through hole for storing materials is also provided on the grain discharging rotating block;

[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 directly opposite to the material storage through hole;

[0014] When the grain discharge rotating block rotates to a first set angle, the material storage through hole and the grain discharge hole are completely offset, the grain discharge rotating block closes the grain discharge hole, and the material storage through hole, the leakage hole and the passing hole are interconnected; when the grain discharge rotating block rotates to a second set angle, the material storage through hole and the grain discharge hole are interconnected, the passing hole and the material storage through hole are not connected, and the sealing plate closes the leakage hole.

[0015] Optionally, the grain discharging rotating block comprises a rotating seat and a silicone cover body arranged on the rotating seat, and the rotating seat and the silicone cover body are mutually engaged; the top surface of the silicone cover body is provided with a flexible protrusion for closing the grain discharging hole;

[0016] The grain outlet hole has a first side surface that can scrape the flexible protrusion, and the angle between the first side surface and the surface of the flexible protrusion is greater than 180°.

[0017] Optionally, the top surface of the flexible protrusion is an outwardly convex arc surface.

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

[0019] The rotating shaft penetrates into the barrel-shaped portion and is fixedly connected to the grain discharging rotating block, and is not connected to the grain hopper;

[0020] A stirring block for stirring pet food is also installed on the top of the rotating shaft, and the stirring block is located on one side of the top of the food hopper.

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

[0022] The top of the grain barrel is provided with an opening, the first annular sealing ring surrounds the opening, and the sealing gland presses the first annular sealing ring on the top 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 provided on the annular surface of the grain barrel for supporting the first annular sealing ring, and 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 installed on one side of the bottom of the support seat, wherein 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 passage, and the grain outlet passage can be connected to the grain outlet hole.

[0027] Optionally, the vacuum feeder further comprises a food bowl for holding pet food and an automatic weighing device arranged on one side of the bottom of the food bowl;

[0028] The automatic weighing device is electrically connected to the rotary drive device. When the pet food in the food bowl is lower than a set weight, the rotary drive device can drive the food discharging rotary block to rotate to output the pet food; when the pet food in the food bowl is higher than a set weight, the rotary drive device can drive the food discharging rotary block to rotate to stop outputting the pet food.

[0029] Optionally, the grain barrel is provided with two barrel-shaped parts, each of which is installed on the grain hopper and the grain discharge rotating block.

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

[0031] Optionally, the sealing plate includes a frame and an annular sealing strip installed on the frame.

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

[0033] The vacuum feeder provided by the present invention has an ingenious structural design. During the process of discharging pet food, the pet food first enters the storage hole from the food discharging hole, and at this time the feeding hole and the storage hole are blocked by the bottom wall of the barrel, and the sealing plate closes the leakage hole, thereby preventing external water vapor from passing through the food discharging hole into the food storage space of the grain barrel; the food discharging rotating block continues to rotate, so that the storage hole and the food discharging hole are completely staggered, and at this time the food storage hole, the leakage hole and the feeding hole are interconnected so that the pet food can be output to feed the pet, and at this time the food discharging rotating block closes the food discharging hole, that is, water vapor cannot enter the food storage space of the grain barrel along the food discharging hole. The vacuum feeder in this embodiment can better improve the sealing effect, effectively prevent water vapor or other impurities from entering the storage space along the discharging channel, and effectively prevent the pet food in the storage space from getting damp.

[0034] The present invention has other features and advantages, which will be apparent from or will be described in detail in the accompanying drawings and the following detailed description incorporated herein, which together serve to explain the specific principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 is an exploded schematic diagram of a vacuum feeder provided by an embodiment of the present invention;

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

[0038] Figure 3 yes Figure 2 AA section structure diagram of the medium vacuum feeder;

[0039] Figure 4 yes Figure 3 An enlarged schematic diagram of the medium vacuum feeder at position A;

[0040] Figure 5 yes Figure 3 An enlarged schematic diagram of the medium vacuum feeder at position B;

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

[0042] Figure 7 yes Figure 1 Schematic diagram of the explosion of the vacuum feeder from another perspective;

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of a grain barrel provided by an embodiment of the present invention;

[0044] Fig. 9 is a three-dimensional schematic diagram of a support base provided by an embodiment of the present invention;

[0045] Fig.10 It is a schematic diagram of the three-dimensional structure of the vacuum feeder provided in an embodiment of the present invention.

[0046] Figure numerals: 1. grain barrel; 11. leakage hole; 2. grain hopper; 21. grain outlet hole; 3. grain outlet rotating block; 31. storage hole; 301. rotating seat; 302. silicone cover; 4. vacuum device; 401. rotating shaft; 403. rotating drive device; 5. sealing plate; 51. feeding hole; 6. sealing gland; 601. first annular sealing ring; 602. first annular protrusion; 603. second annular protrusion; 7. grain bowl; 8. automatic weighing device; 9. support seat; 10. grain barrel seat. DETAILED DESCRIPTION

[0047] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0048] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it 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, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0049] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0050] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0051] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0052] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0053] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0054] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred 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 expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0056] In view of the above-mentioned defects of the existing vacuum feeder, the applicant, based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theory, actively conducts research and innovation in the hope of creating a technology that can solve the defects in the existing technology and make the vacuum feeder more practical. After continuous research and design, and after repeated trial production and improvement, the present invention with real practical value was finally created.

[0057] Please refer to Figures 1 to 9 , an embodiment of the present invention provides a vacuum feeder, comprising:

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

[0059] The grain hopper 2 is installed in the barrel-shaped part 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 part 101, and is provided with a grain outlet hole 21;

[0060] The grain discharging rotating block 3 is rotatably installed in the barrel-shaped portion 101; the grain discharging rotating block 3 is installed 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; the grain discharging rotating block 3 is also provided with a penetrating material storage through hole 31;

[0061] A vacuum device 4, used for vacuuming the inner cavity of the grain barrel 1;

[0062] The sealing plate 5 rotates synchronously with the grain discharging rotating block 3 and is disposed at one side of the bottom of the bottom wall of the barrel portion 101. The sealing plate 5 has a feeding hole 51 for the pet grain to pass through, and the feeding hole 51 is directly opposite to the material storage through hole 31.

[0063] When the grain discharge rotating block 3 rotates to the first set angle, the material storage through hole 31 and the grain discharge hole 21 are completely offset, the grain discharge rotating block 3 closes the grain discharge hole 21, and the material storage through hole 31, the leakage hole 11 and the passing hole 51 are interconnected; when the grain discharge rotating block 3 rotates to the second set angle, the material storage through hole 31 and the grain discharge hole 21 are interconnected, the passing hole 51 and the material storage through hole 31 are not connected, and the sealing plate 5 closes the leakage hole 11.

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

[0065] Optionally, the grain outlet rotating block 3 includes a rotating seat 301 and a silicone cover body 302 covered on the rotating seat 301, and the rotating seat 301 and the silicone cover body 302 are clamped with each other; the top surface of the silicone cover body 302 is provided with a flexible protrusion for closing the grain outlet hole 21; the grain outlet hole 21 has a first side surface that can scrape over the flexible protrusion, and the angle between the first side surface and the surface of the flexible protrusion is greater than 180°.

[0066] Specifically, the silicone cover of the cover-like structure can not only seal the gap between the rotating seat 301 and the inner circumferential wall of the barrel 101, but also seal the grain outlet hole 21, thereby achieving a better sealing effect. In addition, a flexible protrusion is provided to improve the sealing effect of the grain outlet hole 21. It should be further explained that the angle between the first side surface and the surface of the flexible protrusion is greater than 180°, which can effectively avoid crushing the pet food.

[0067] Optionally, the top surface of the flexible protrusion is an outwardly convex arc surface.

[0068] Optionally, the vacuum feeder 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 into the barrel portion 101 and is fixedly connected to the grain outlet 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 the top side of the grain hopper 2.

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

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

[0071] Optionally, the vacuum feeder further comprises a first annular sealing ring 601 and a sealing gland 6 pressed onto the grain barrel 1; the grain barrel 1 is provided with an opening at the top, the first annular sealing ring 601 surrounds the opening, and the sealing gland 6 presses the first annular sealing ring 601 onto 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, 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.

[0072] Specifically, in this embodiment, the first annular protrusion 602, the second annular protrusion 603, and the first annular sealing ring 601 cooperate with each other to better seal the gap between the sealing gland 6 and the grain barrel 1. It should be explained in detail that when the sealing gland 6 is pressed onto the grain barrel 1, the cross section of the first annular sealing ring 601 is pressed into a shape that is thick at both ends and narrow in the middle, that is, similar to a horizontal "8" cross section, and the first annular sealing ring 601 has a better sealing effect and is less likely to leak.

[0073] Optionally, the vacuum feeder also includes a support seat 9 and a grain barrel seat 10 installed on one side of the bottom of the support seat 9, 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 channel, and the grain outlet channel can be connected to the grain outlet hole 21.

[0074] Optionally, the vacuum feeder also includes a food bowl 7 for supporting 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 rotating drive device 403, and when the pet food in the food bowl 7 is lower than the set weight, the rotating drive device 403 can drive the food output rotating block 3 to rotate to output the pet food; when the pet food in the food bowl 7 is higher than the set weight, the rotating drive device 403 can drive the food output rotating block 3 to rotate to stop outputting the pet food.

[0075] The vacuum feeder in this embodiment can automatically feed the pet based on the weight of the pet food in the food bowl 7, thereby reducing the burden on 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 discharging 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 includes a frame 501 and an annular sealing strip 502 installed on the frame 501 .

[0079] It is also necessary to add that Fig.10 Another type of vacuum feeder.

[0080] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A vacuum feeder, characterized in that: include: A grain barrel (1) having a barrel-shaped portion (101) with an opening facing upward 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); the grain discharging rotating block (3) is also provided with a penetrating material storage through hole (31); A vacuum device (4) for vacuuming the inner cavity of the grain barrel (1); A sealing plate (5) is rotated 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 directly 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 material leakage hole (11) and the material passing 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 material passing hole (51) and the material storage through hole (31) are not connected, and the sealing plate (5) closes the material 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 for closing the grain discharging hole (21) is disposed on the top surface of the silicone cover (302); 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, characterized in that It also includes a rotating shaft (401) and a rotating driving device (403) for driving the rotating shaft (401) to rotate; The rotating shaft (401) penetrates into 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) pressed 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) onto 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 comprises 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, characterized in that 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 discharge 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, characterized in that The sealing plate (5) comprises a frame (501) and an annular sealing strip (502) mounted on the frame (501).

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