Automatic feeder and fish tank

Abstract

The automatic feeder comprises a storage bin, a shell, a driving part, a moving block, a rotating plate and an elastic piece, the storage bin, the driving part and the moving block are arranged in the shell, an avoiding opening is formed in the shell, and the storage bin is located above the moving block; the moving block is slidably connected to the sliding part of the shell, and the driving piece is connected with the moving block to drive the moving block to move along the sliding part to extend out of or retract into the avoiding opening; a feeding hole and a discharging hole of the moving block are communicated to form a quantitative bin; the rotating plate is rotationally connected to the moving block, and the elastic piece is fixed to the side, facing the quantitative bin, of the rotating plate and higher than the quantitative bin; when the moving block retracts into the receding opening, the feeding opening communicates with the storage bin, the top end of the elastic piece extends into the storage bin, and the discharging opening is blocked by the rotating plate; and when the moving block extends out of the avoiding opening, the elastic piece rotates along with the rotating plate to open the discharging opening. Multiple anti-blocking effects are achieved at low cost, and the problem that feed cannot fall off due to damp bonding is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fish tanks, and in particular to an automatic feeder and a fish tank. Background Art

[0002] Nowadays, more and more people place fish tanks indoors to raise ornamental fish, and the demand for smart fish tanks that can feed automatically is also increasing. General smart fish tank feeders usually have an automatic quantitative feeding function. However, due to the influence of environmental humidity, the feed is easily damp, and the viscosity of the damp feed is greatly increased. The feed in the feed bin is difficult to fall, resulting in the inability of the automatic feeder to feed normally. And because it is generally difficult to observe the changes in the feed in the feeder each time, when the user does not pay attention to the feed reserves for a long time, it may cause the feeder to be in an abnormal state continuously, and the feed cannot be put in normally for a long time. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes an automatic feeder and a fish tank, which can achieve multiple anti-blocking effects at a relatively low cost and avoid the problem that feed cannot fall off due to moisture and sticking.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention discloses an automatic feeder, comprising a storage bin, a shell, a driving member, a moving block, a rotating plate and a spring, wherein the storage bin, the driving member and the moving block are respectively arranged in the shell, the shell is provided with an escape opening, and the storage bin is located above the moving block; a sliding portion is provided on the shell, the moving block is slidably connected to the sliding portion, and the driving member is connected to the moving block to drive the moving block to move along the sliding portion to extend or retract the escape opening; the upper surface of the moving block A feed port is formed, and a discharge port is formed on the lower surface, and the feed port and the discharge port are connected to form a quantitative bin; the rotating plate is rotatably connected to the moving block, and the spring sheet is fixed to the side of the rotating plate facing the quantitative bin and is higher than the quantitative bin; when the moving block retracts into the avoidance port, the feed port is connected to the storage bin, the top end of the spring sheet extends into the storage bin, and the rotating plate blocks the discharge port; when the moving block extends out of the avoidance port, the spring sheet rotates with the rotating plate to open the discharge port.

[0006] Preferably, the portion of the spring sheet extending into the storage bin is in a hook-shaped structure.

[0007] Preferably, the end of the hook-shaped structure is bent toward a side away from the avoidance opening.

[0008] Preferably, the spring piece includes a supporting section, a first bending section and a second bending section which are connected to each other in sequence, the first bending section and the second bending section form the hook-type structure, the first end of the supporting section is fixedly connected to the rotating plate, and when the rotating plate blocks the discharge port, the second end of the supporting section is inclined and extended toward the feed port and the avoidance port; the first end of the first bending section is connected to the second end of the supporting section, and the second end of the first bending section is inclined and extended toward the storage bin and away from the avoidance port; the first end of the second bending section is connected to the second end of the first bending section, and the second end of the second bending section is extended toward the quantitative bin and away from the avoidance port.

[0009] Preferably, the first end of the first bending section is located in the quantitative bin, and the second end of the first bending section is located in the storage bin.

[0010] Preferably, the second end of the second bending section is located in the quantitative bin.

[0011] Preferably, the outer shell forms a pressure plate between the bottom of the storage bin and the avoidance opening, and the upper surface of the moving block slides against the pressure plate; the sliding portion has a supporting plane located at the bottom of the moving block; before the rotating plate extends out of the avoidance opening with the moving block to open the discharge port, the top end of the spring plate is against the pressure plate, and the rotating plate slides against the supporting plane; in the direction in which the moving block extends out of the avoidance opening, the farthest position that the pressure plate and the spring plate can resist each other protrudes beyond the farthest position that the supporting plane and the rotating plate can resist each other.

[0012] Preferably, the spring piece is in a strip-shaped structure or a sheet-shaped structure, and the width of the spring piece is less than 1 / 3 of the width of the quantitative bin.

[0013] Preferably, in the direction in which the moving block extends out of the avoidance opening, the distance from the top of the spring to the wall of the quantitative bin away from the avoidance opening is less than or equal to the distance from the top of the spring to the wall of the quantitative bin close to the avoidance opening.

[0014] In a second aspect, the present invention discloses a fish tank, comprising a tank body and a top cover, wherein the top cover is fixedly connected to the top of the tank body, and the automatic feeder described in the first aspect is fixedly connected to the top cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: in the automatic feeder and fish tank disclosed in the present invention, a spring sheet is fixed on the rotating plate so that the spring sheet can rotate synchronously with the rotating plate. When the rotating plate is folded to block the discharge port of the quantitative bin, the spring sheet is located in the quantitative bin, and at this time, the top end of the spring sheet extends into the storage bin; by setting the spring sheet with this specific structure, on the one hand, it can move synchronously with the moving block, so that the spring sheet can stir the feed in the storage bin when the moving block moves; on the other hand, it can rotate synchronously with the rotating plate, so that the spring sheet stirs the feed in the quantitative bin when it rotates with the rotating plate, thereby achieving multiple anti-blocking effects at a lower cost and avoiding the problem of feed being unable to fall due to moisture and adhesion.

[0016] In a further embodiment, the present invention also has the following beneficial effects:

[0017] (1) The portion of the spring extending into the storage bin is in a hook-shaped structure, which enables the spring to more effectively stir the feed in the storage bin or quantitative bin when following the movement of the moving block or the rotation of the rotating plate, thereby further improving the anti-blocking effect.

[0018] (2) The spring piece includes a supporting section, a first bending section and a second bending section which are interconnected in sequence with a specific structure, wherein the connection between the first bending section and the supporting section is located in the quantitative bin, and the connection between the first bending section and the second bending section is located in the material storage bin, so that when the moving block extends out of the avoidance opening, the first bending section of the spring piece can be pressed down by the bottom of the material storage bin and collected in the quantitative bin; wherein the end of the spring piece is located in the quantitative bin, so that when the moving block is collected in the avoidance opening, the second bending section of the spring piece can be pressed down by the outer shell and collected in the quantitative bin.

[0019] (3) In the direction in which the moving block extends into the avoidance opening, the maximum abutment position between the spring sheet and the top of the shell protrudes beyond the maximum abutment position between the bottom of the shell and the rotating plate, thereby ensuring that there is a sufficient action position so that the elastic force applied by the spring sheet between the top of the shell can directly cause the rotating plate to unfold after extending out of the avoidance opening.

[0020] (4) The spring piece is in the form of a long strip or sheet, and its width is less than 1 / 3 of the width of the quantitative bin, thereby preventing the spring piece from being too large and blocking the feed from falling from the storage bin into the quantitative bin.

[0021] (5) In the direction in which the moving block extends out of the avoidance opening, the top end of the spring is closer to the wall of the quantitative bin away from the avoidance opening, ensuring that the spring can move a greater distance when it is retracted into the avoidance opening and the top end is located in the storage bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a fish tank according to a preferred embodiment of the present invention;

[0023] Figure 2 yes Figure 1 Schematic cross-section of the fish tank;

[0024] Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle;

[0025] Figure 4 yes Figure 3 The enlarged schematic diagram of point B in the middle;

[0026] Figure 5 It is a cross-sectional schematic diagram when the moving block is retracted into the avoidance opening and the feed opening is connected to the storage bin;

[0027] Figure 6 is a cross-sectional schematic diagram when the moving block extends out of the avoidance opening;

[0028] Figure 7 It is a side view schematic diagram when the moving block in the housing extends out of the avoidance opening.

[0029] Description of Figure Numbers:

[0030] 10. Cylinder body;

[0031] 20. Top cover;

[0032] 30. Feeder;

[0033] 31. Storage bin; 311. Bottom of storage bin;

[0034] 32, housing; 321, sliding portion; 3211, supporting plane; 3212, inclined plane; 322, escape opening; 323, pressing plate; 3231, front end of pressing plate; 3232, rear end of pressing plate;

[0035] 33. driving member; 331. output gear;

[0036] 34, moving block; 341, feeding port; 342, unloading port; 343, quantitative bin; 344, cover plate; 345, rack;

[0037] 35, spring piece; 351, supporting section; 352, first bending section; 353, second bending section;

[0038] 36. Transfer to another board. DETAILED DESCRIPTION

[0039] The following is a detailed description of the embodiments of the present invention. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the present invention.

[0040] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit / signal communication.

[0041] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] like Figure 1 As shown, a preferred embodiment of the present invention discloses a fish tank and an automatic feeder thereof. The fish tank includes a tank body 10 and a top cover 20. The top cover 20 is fixedly connected to the top of the tank body 10, and the automatic feeder 30 is fixedly connected to the top cover 20.

[0044] like Figures 2 to 4The automatic feeder 30 includes a storage bin 31, a housing 32, a driving member 33, a moving block 34, a spring 35 and a rotating plate 36. The storage bin 31, the driving member 33 and the moving block 34 are respectively arranged in the housing 32. The housing 32 is provided with an escape opening 322. The storage bin 31 is located above the moving block 34. The storage bin 31 can be an integrally formed structure with the housing 32, or can be separated and disassembled from the housing 32. The housing 32 is provided with a sliding portion 321, and the moving block 34 is slidably connected On the sliding part 321, the driving member 33 is connected to the moving block 34 to drive the moving block 34 to move along the sliding part 321 to extend or retract the avoidance opening 322; the upper surface of the moving block 34 forms a feed port 341, and the lower surface forms a discharge port 342, and the feed port 341 and the discharge port 342 are connected to form a quantitative bin 343; the rotating plate 36 is rotatably connected to the moving block 34, and the rotating plate 36 can be switched between blocking and expanding the discharge port 342 when moving with the moving block 34. When the moving block 34 retracts into the avoidance opening 322, the feeding opening 341 is connected to the material storage bin 31 and the rotating plate 36 blocks the material discharge opening 342; when the moving block 34 extends out of the avoidance opening 322, the spring piece 35 rotates with the rotating plate 36 to open the material discharge opening 342; the spring piece 35 is fixed to the side of the rotating plate 36 facing the quantitative bin 343 and is higher than the quantitative bin 343. When the rotating plate 36 blocks the material discharge opening 342 and the quantitative bin 343 is connected to the material storage bin 31, the top end of the spring piece 35 extends into the material storage bin 31. It should be noted that the top end of the spring piece 35 refers to the farthest position of the spring piece 35 from the rotating plate 36 in the natural state, rather than the end of the spring piece 35 in the extension direction.

[0045] The portion of the spring sheet 35 extending into the storage bin 31 is in a hook-shaped structure. Further, the end of the hook-shaped structure is bent toward a side away from the avoidance opening 322. In a specific embodiment, the spring sheet 35 can be a metal or plastic strip structure with good elastic properties.

[0046] like Figure 5As shown, the spring piece 35 includes a supporting section 351, a first bending section 352 and a second bending section 353 which are connected to each other in sequence. The first bending section 352 and the second bending section 353 form a hook-type structure. The first end of the supporting section 351 is fixedly connected to the rotating plate 36 by welding, clamping or bonding. When the rotating plate 36 blocks the discharge port 342, the second end of the supporting section 351 is inclined and extended in the direction of the feed port 341 and the avoidance port 322; the first end of the first bending section 352 is connected to the second end of the supporting section 351, and the second end of the first bending section 352 is inclined and extended in the direction close to the storage bin 31 and away from the avoidance port 322; the first end of the second bending section 353 is connected to the second end of the first bending section 352, and the second end of the second bending section 353 is extended in the direction of the quantitative bin 343 and away from the avoidance port 322. The first end of the first bent section 352 is located in the quantitative bin 343, and the second end of the first bent section 352 is located in the material storage bin 31, so that when the moving block 34 is extended, the first bent section 352 of the spring sheet 35 can be pressed down by the bottom 311 of the material storage bin and stored in the quantitative bin 343. The second end of the second bent section 353 is located in the quantitative bin 343, so that when the moving block 34 is stored, the second bent section 353 of the spring sheet 35 can be pressed down by the housing 32 and stored in the quantitative bin 343.

[0047] like Figure 6 As shown, the outer shell 32 forms a pressure plate 323 between the bottom 311 of the storage bin and the avoidance opening 322, and the upper surface of the moving block 34 slides against the pressure plate 323; the sliding portion 321 has a support plane 3211 located at the bottom of the moving block 34; before the rotating plate 36 extends out of the avoidance opening 322 with the moving block 34 to open the discharge opening 342, the top of the spring sheet 35 slides against the pressure plate 323, and the rotating plate 36 slides against the support plane 3211; so that when the moving block 34 extends outward, the spring sheet 35 is pressed by the pressure plate 323 and deformed and collected in the quantitative bin 343, and at the same time, an elastic driving force for expanding outward is provided to the rotating plate 36, as shown in FIG. Figure 7 As shown, when the rotating plate 36 is no longer blocked by the supporting plane 3211, the elastic force generated by the deformation of the spring piece 35 by the pressure plate 323 can be released to drive the rotating plate 36 to pop out downward, driving the feed in the quantitative bin 343 to fall out, and preventing the problem that the quantitative bin 343 and the rotating plate 36 cannot be unfolded under the action of its own gravity due to moisture of the feed.

[0048] When the moving block 34 extends out of the avoidance opening 322, the rotating plate 36 first releases the contact relationship with the supporting plane 3211. At this time, the rotating plate 36 is separated from the supporting plane 3211, and the spring sheet 35 is still in contact with the pressing plate 323. Then, the spring sheet 35 releases the contact relationship with the pressing plate 323. Specifically, in the direction in which the moving block 34 extends out of the avoidance opening 322, the farthest position that the pressing plate 323 and the spring sheet 35 can abut against each other protrudes from the farthest position that the supporting plane 3211 and the rotating plate 36 can abut against each other; thus, it can be ensured that there is a sufficient action position, so that the elastic force applied by the spring sheet 35 between the pressing plate 323 can directly cause the rotating plate 36 to unfold after extending out of the avoidance opening 322. In one embodiment, the farthest position at which the pressure plate 323 and the spring sheet 35 can offset each other is the front end 3231 of the pressure plate 323; the farthest position at which the support plane 3211 and the rotating plate 36 can offset each other is the position at which the support plane 3211 is closest to the avoidance opening 323, such as the connection between the support plane 3211 and the inclined surface 3212 in the figure.

[0049] In this embodiment, when the rotating plate 36 blocks the feeding port 342 and the quantitative bin 343 is connected to the storage bin 31, the first bent section 352 and the second bent section 353 of the spring sheet 35 are partially extended into the storage bin 31 to stir the feed when the moving block 34 moves. When the moving block 34 extends outward, the first bent section 352 will be pressed by the edge of the bottom 311 of the storage bin close to the avoidance port 322 (i.e., the rear end 3232 of the pressing plate), and the first bent section 352 and the second bent section 353 will be pressed into the quantitative bin 343. When the moving block 34 is retracted into the sliding portion 321 from the outside, the first bent section 352 will be pressed by the front end 3231 of the pressing plate, and the first bent section 352 and the second bent section 353 will also be pressed into the quantitative bin 343 so that they can move safely with the moving block 34. After reaching the storage bin 31, they will pop out again to stir the feed in the storage bin 31.

[0050] In the direction in which the moving block 34 extends out of the avoidance opening 322, the distance from the top of the spring piece 35 to the wall of the quantitative bin 343 away from the avoidance opening 322 is less than or equal to the distance from the top of the spring piece 35 to the wall of the quantitative bin 343 close to the avoidance opening 322; thereby ensuring that the spring piece 35 can move a larger distance when it is retracted into the avoidance opening 322 and the top is located in the storage bin 31.

[0051] The spring piece 35 is in a strip-shaped structure or a sheet-shaped structure, and the width of the spring piece 35 is less than 1 / 3 of the width of the quantitative bin 343 , which can prevent the spring piece 35 from being too large and blocking the feed from falling from the storage bin 31 into the quantitative bin 343 .

[0052] A downwardly inclined slope 3212 is provided at the end of the support plane 3211 of the sliding portion 321 near the avoidance opening 322, and the slope 3212 can provide a certain buffer space for the unfolding of the rotating plate 36 during the process of the moving block 34 extending out of the avoidance opening 322, and slowly release the elastic force of the spring piece 35, so that the rotating plate 36 will not be unfolded too violently due to the elastic force applied by the spring piece 35 on the pressure plate 323 during unfolding, resulting in easy damage; and can provide a certain buffer space for the process of the rotating plate 36 from unfolding to completely blocking the discharge opening 342 during the process of the moving block 34 retracting into the avoidance opening 322, and the spring piece 35 can be slowly pressed by the front end 3231 of the pressure plate, so that the retraction process of the moving block 34 is smoother.

[0053] In this embodiment, the sliding portion 321 is a slide groove opened in the shell 32, and the moving block 34 is confined in the slide groove. A rack 345 is fixed to the end of the moving block 34 away from the avoidance opening 322, and an output gear 331 is fixed to the output shaft of the driving member 33. The output gear 331 and the rack 345 are meshed with each other to drive the moving block 34 to move along the slide groove, and then extend or retract the telescopic buckle 322; wherein the output gear 331 and the rack 345 are both in the slide groove. A cover plate 344 is provided at the outer end of the moving block 34, which is used to block the avoidance opening 322 when the moving block 34 retracts into the avoidance opening 322, so as to prevent water vapor from entering the shell 32 from the avoidance opening 322 and making the feed in the quantitative bin 341 wet.

[0054] The automatic feeder 30 and the fish tank provided in the preferred embodiment of the present invention have a hook-shaped spring piece 35 on the rotating plate 36, and the two rotate synchronously; when the rotating plate 36 is folded to block the discharge port 3432 of the quantitative bin 343, the hook-shaped spring piece 35 is located in the quantitative bin 343, and at this time, the top end of the hook-shaped spring piece 35 extends into the storage bin 31; the hook-shaped spring piece 35 can move synchronously with the moving block 34, and also rotate synchronously with the rotating plate 36, so that the feed in the storage bin 31 can be stirred when moving, and the feed in the quantitative bin 343 can be stirred when rotating with the rotating plate 36, so as to achieve multiple anti-blocking effects at a relatively low cost, thereby avoiding the problem that the feed cannot fall due to moisture and adhesion.

[0055] The background section of the present invention may contain background information about the problem or environment of the present invention, rather than describing the prior art by others. Therefore, the content contained in the background section is not an admission by the applicant that the prior art is available.

[0056] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of mutual contradiction, the technical personnel in this field can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope defined by the attached claims.

Claims

1. An automatic feeder, characterized in that: The utility model comprises a material storage bin, a shell, a driving member, a moving block, a rotating plate and a spring piece, wherein the material storage bin, the driving member and the moving block are respectively arranged in the shell, the shell is provided with an escape opening, and the material storage bin is located above the moving block; The housing is provided with a sliding portion, the moving block is slidably connected to the sliding portion, and the driving member is connected to the moving block to drive the moving block to move along the sliding portion to extend or retract the avoidance opening; A feed port is formed on the upper surface of the moving block, and a discharge port is formed on the lower surface. The feed port and the discharge port are connected to form a quantitative bin; the turn plate is rotatably connected to the moving block, and the spring is fixed on the side of the turn plate facing the quantitative bin and is higher than the quantitative bin; when the moving block retracts into the avoidance port, the feed port is connected to the storage bin, the top end of the spring extends into the storage bin, and the turn plate blocks the discharge port; when the moving block extends out of the avoidance port, the spring rotates with the turn plate to open the discharge port.

2. The automatic feeder according to claim 1, characterized in that The portion of the spring extending into the storage bin is in a hook-shaped structure.

3. The automatic feeder according to claim 2, characterized in that The end of the hook-shaped structure is bent toward a side away from the avoidance opening.

4. The automatic feeder according to claim 2, characterized in that The spring piece includes a supporting section, a first bending section and a second bending section that are connected to each other in sequence. The first bending section and the second bending section form the hook-type structure. The first end of the supporting section is fixedly connected to the rotating plate. When the rotating plate blocks the discharge port, the second end of the supporting section is inclined and extended toward the feed port and the avoidance port; the first end of the first bending section is connected to the second end of the supporting section, and the second end of the first bending section is inclined and extended toward the storage bin and away from the avoidance port; the first end of the second bending section is connected to the second end of the first bending section, and the second end of the second bending section is extended toward the quantitative bin and away from the avoidance port.

5. The automatic feeder according to claim 4, characterized in that The first end of the first bending section is located in the quantitative bin, and the second end of the first bending section is located in the storage bin.

6. The automatic feeder according to claim 4, characterized in that The second end of the second bending section is located in the quantitative chamber.

7. The automatic feeder according to claim 1, characterized in that The outer shell forms a pressure plate between the bottom of the storage bin and the avoidance opening, and the upper surface of the moving block slides against the pressure plate; the sliding part has a support plane located at the bottom of the moving block; before the rotating plate extends out of the avoidance opening with the moving block to open the discharge opening, the top end of the spring plate is against the pressure plate, and the rotating plate slides against the support plane; in the direction in which the moving block extends out of the avoidance opening, the farthest position at which the pressure plate and the spring plate can be against each other protrudes from the farthest position at which the support plane and the rotating plate can be against each other.

8. The automatic feeder according to claim 1, characterized in that The spring piece is in a strip-shaped structure or a sheet-shaped structure, and the width of the spring piece is less than 1 / 3 of the width of the quantitative chamber.

9. The automatic feeder according to claim 1, characterized in that In the direction in which the moving block extends out of the avoidance opening, the distance from the top of the spring to the wall of the quantitative bin away from the avoidance opening is less than or equal to the distance from the top of the spring to the wall of the quantitative bin close to the avoidance opening.

10. A fish tank, characterized in that: The automatic feeder comprises a cylinder body and a top cover, wherein the top cover is fixedly connected to the top of the cylinder body, and the automatic feeder according to any one of claims 1 to 9 is fixedly connected to the top cover.

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