Quantitative bait feeder for scallop breeding

Abstract

The utility model relates to the technical field of feeders, in particular to a scallop breeding bait quantitative feeder which comprises a shell mechanism used for loading and taking scallop breeding bait, the shell mechanism comprises an outer shell, a feeding hopper used for feeding is arranged at the upper end of the outer shell, and a feeding hopper is arranged at the lower end of the outer shell. The lower end of the shell is sleeved with a discharging pipe used for discharging, and a stirring mechanism used for mixing scallop breeding bait is arranged in the shell mechanism. When a detection head detects that feeding is needed, a stepping motor rotates forwards to stir bait, the stepping motor drives a shaft rod to rotate reversely after stirring is conducted for a certain time, a driving gear is driven to rotate through transmission of a transmission assembly so that a feeding cylinder can rotate in a discharging pipe, and a first cone bottom and a second cone bottom can be staggered so that feeding of the bait can be achieved; through cooperation of a mechanical structure, bait throwing is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of feeder technology, and in particular to a quantitative feeder for scallop seedlings. Background Technology

[0002] Scallops, as a marine shellfish with high economic value, are widely distributed in coastal areas and have important economic and ecological value. With the development of aquaculture, scallop seedling cultivation has become a key link in the aquaculture industry chain. When cultivating scallops, scallops need to be taken out of the farm and transferred to the cultivation pond for fertilization and seedling cultivation. During the seedling cultivation, the seedlings need to be fed regularly.

[0003] The feeder is fixed to the side of the pond by a base frame. The mixed feed is put into the feeder and fed at the specified time. The feeder mixes and feeds separately. It needs to be mixed again before adding feed, which increases the number of work steps. The development of seedlings in different ponds is different, and it is impossible to achieve accurate feeding by just setting the time.

[0004] Based on this, this utility model designs a quantitative feeder for scallop seedling cultivation to solve the above problems. Utility Model Content

[0005] In view of the problem that the above-mentioned or existing technologies cannot accurately feed feed at precise times and in precise quantities, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a quantitative feeder for scallop seedlings.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: it includes a shell mechanism for loading and unloading feed for scallop seedlings.

[0008] The housing mechanism includes an outer shell, with a feeding hopper at the upper end of the outer shell for feeding, and a discharge pipe at the lower end of the outer shell for discharging.

[0009] The shell structure is equipped with a stirring mechanism inside for mixing the scallop seedling feed.

[0010] The stirring mechanism includes a stepper motor and a partition. The stepper motor is fixedly installed on the lower outer wall of the housing, and the partition is fixedly connected to the lower inner wall of the housing. The output end of the stepper motor is fixedly connected to a shaft, which passes through the bottom plate of the housing, passes through the partition, and is rotatably connected to the top of the housing.

[0011] The lower end of the shell structure is provided with a detection mechanism for detecting the scallop seedling pond.

[0012] The testing apparatus includes a testing head for testing scallop seedling ponds;

[0013] The housing is equipped with a metering mechanism for controlling the feeding action;

[0014] The metering mechanism includes a drive gear, a transmission assembly, a feeding gear, and a feeding cylinder. The inside of the drive gear and the outer wall of the shaft are limited to rotate by the transmission assembly. The feeding cylinder is movably sleeved inside the discharge pipe. The feeding gear is sleeved on the outer wall of the feeding cylinder. A first conical bottom is fixedly connected to the lower end of the feeding cylinder. A second conical bottom is provided at the lower end of the first conical bottom and is fixedly arranged inside the discharge pipe.

[0015] As a preferred embodiment of the scallop seedling feed quantitative feeder of this utility model, the feed hopper is funnel-shaped, the upper end of the feed hopper is detachably connected with a cylinder cover, and the discharge pipe is "L"-shaped.

[0016] As a preferred embodiment of the scallop seedling feed quantitative feeder of this utility model, the outer end of the shaft is provided with stirring blades in the shell and partition section, and there are multiple stirring blades, which are arranged in a multi-row annular equidistant array on the outer wall of the shaft.

[0017] As a preferred embodiment of the scallop seedling feed quantitative feeder of this utility model, the detection mechanism further includes an outer cylinder and a detection rod. The upper end of the outer cylinder penetrates the lower end of the outer shell and extends to the upper part of the lower end of the outer shell, and rotates. The upper end of the detection rod is fixedly connected to the lower end of the partition. The lower end of the detection rod penetrates the lower end of the outer shell, penetrates the outer cylinder, and extends to the outside of the lower end of the outer cylinder. The upper end of the detection head is fixedly connected to the lower end of the detection rod.

[0018] As a preferred embodiment of the scallop seedling feed metering device of this utility model, the lower end of the outer cylinder is fixed with a cleaning rod, the lower end of the cleaning rod is in the shape of a hook, the surface of the detection head is in contact with the hook surface of the lower end of the cleaning rod, and a cleaning gear is provided on the outer part of the outer cylinder located on the inner wall of the outer shell, and the cleaning gear is connected to the drive gear through a synchronous gear belt.

[0019] As a preferred embodiment of the scallop seedling feed metering device of this utility model, the transmission component includes a ratchet block and an arc groove. The surface of the ratchet block is fixed to the inner wall of the drive gear. The ratchet block is triangular in shape, and there are multiple ratchet blocks arranged in an equidistant array on the inner wall of the drive gear. The arc groove is opened on the bottom outer wall of the shaft. There are three arc grooves arranged in an equidistant array on the outer wall of the shaft. A spring piece is fixedly provided on the inner wall of the arc groove, and a pawl is rotatably provided. The surface of the pawl is in contact with the surface of the spring piece, and the surface of the pawl is in contact with the surface of the ratchet block.

[0020] As a preferred embodiment of the scallop seedling feed quantitative feeder of this utility model, the outer wall of the discharge pipe is provided with an annular groove, the surface of the feeding gear is in contact with the inner wall of the annular groove provided on the outer wall of the discharge pipe, the feeding gear is connected to the drive gear through a synchronous gear belt, the first cone bottom and the second cone bottom have the same structure, and both have holes for discharging material on their surfaces.

[0021] The beneficial effects of this utility model of a quantitative feeder for scallop seedlings are as follows: Water and algae are put into the shell. When the detection head detects that feeding is needed, the stepper motor rotates forward. The forward-rotating stepper motor drives the shaft to rotate and stir the water and algae, allowing them to mix. After stirring for a specified time, the stepper motor reverses and drives the drive gear to rotate through the transmission component. The drive gear drives the feeding gear to rotate through the synchronous gear belt. The rotating feeding gear drives the feeding cylinder to rotate. The first cone bottom at the bottom of the rotating feeding cylinder is offset from the second cone bottom inside the discharge pipe, allowing the feed to be discharged from the discharge pipe into the pond, making the feeding more convenient and precise. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a quantitative feeder for scallop seedlings.

[0024] Figure 2 This is a schematic diagram of the rear section of a quantitative feeder for scallop seedlings.

[0025] Figure 3 This is a schematic diagram of the transmission structure of a quantitative feeder for scallop seedlings.

[0026] Figure 4 This is a schematic diagram of the transmission component structure of a quantitative feeder for scallop seedlings.

[0027] Legend: 1. Shell mechanism; 11. Outer shell; 12. Feed hopper; 13. Discharge pipe; 2. Stirring mechanism; 21. Stepper motor; 22. Shaft; 23. Stirring blade; 24. Baffle plate; 3. Detection mechanism; 31. Outer cylinder; 32. Detection rod; 33. Detection head; 34. Cleaning rod; 35. Cleaning gear; 4. Metering mechanism; 41. Drive gear; 42. Transmission assembly; 421. Ratchet; 422. Arc groove; 423. Spring; 424. Pawl; 43. Feeding gear; 44. Feeding cylinder; 45. First cone bottom; 46. Second cone bottom. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] Example, refer to Figures 1 to 4 This is the first embodiment of the present invention, which provides a quantitative feeder for scallop seedlings, capable of achieving precise quantitative feed dispensing.

[0032] Specifically, it includes a shell mechanism 1 for loading and unloading feed for scallop seedlings.

[0033] The housing mechanism 1 includes a housing 11, with a feeding hopper 12 for feeding action at the upper end of the housing 11, and a discharge pipe 13 for discharging action sleeved at the lower end of the housing 11.

[0034] The shell mechanism 1 is equipped with a stirring mechanism 2 for mixing the scallop seedling feed;

[0035] The stirring mechanism 2 includes a stepper motor 21 and a partition 24. The stepper motor 21 is fixedly installed on the lower outer wall of the housing 11, and the partition 24 is fixedly connected to the lower inner wall of the housing 11. The output end of the stepper motor 21 is fixedly connected to a shaft 22, which passes through the bottom plate of the housing 11, passes through the partition 24, and is rotatably connected to the top of the housing 11.

[0036] The lower end of the shell mechanism 1 is provided with a detection mechanism 3 for detecting the scallop seedling pond.

[0037] The testing unit 3 includes a testing head 33 for testing scallop seedling ponds;

[0038] The housing 11 is equipped with a metering mechanism 4 for controlling the feeding action;

[0039] The metering mechanism 4 includes a drive gear 41, a transmission assembly 42, a feeding gear 43, and a feeding cylinder 44. The inside of the drive gear 41 and the outer wall of the shaft 22 are limited to rotate by the transmission assembly 42. The feeding cylinder 44 is movably sleeved inside the discharge pipe 13. The feeding gear 43 is sleeved on the outer wall of the feeding cylinder 44. A first conical bottom 45 is fixedly connected to the lower end of the feeding cylinder 44. A second conical bottom 46 is provided at the lower end of the first conical bottom 45, and the second conical bottom 46 is fixedly arranged inside the discharge pipe 13.

[0040] Furthermore, the feeding hopper 12 is located at the front of the middle of the upper end face of the outer shell 11, the discharge pipe 13 is located at the rear of one side of the lower end face of the outer shell 11, the stepper motor 21 is located at the middle of the lower end face of the outer shell 11, the shaft 22 rotates at the middle position of the outer shell 11, the feeding cylinder 44 can rotate inside the discharge pipe 13, and the first cone bottom 45 can rotate with the discharge pipe 13 to add water and algae from the feeding hopper 12. After being stirred by the stirring mechanism 2 inside the outer shell 11, the feeding time is determined by the detection mechanism 3, and finally the feed is discharged from the discharge pipe 13 by the quantitative mechanism 4. During stirring, the stepper motor 21 will control the shaft 22 to rotate forward, and the feed in the space between the partition 24 and the outer shell 11 will be stirred. After the timed stirring time is up, the stepper motor 21 will reverse and drive the drive gear 41 to rotate through the transmission component 42, which in turn drives the feeding cylinder 44 to rotate through the feeding gear 43, so that the first cone bottom 45 and the second cone bottom 46 are staggered to achieve the discharge of feed.

[0041] Specifically, the feed hopper 12 is funnel-shaped, and the upper end of the feed hopper 12 is detachably connected to a cylinder cover. The discharge pipe 13 is "L"-shaped. The outer wall of the shaft 22 is provided with stirring blades 23 on the part of the outer shell 11 and the partition plate 24. There are multiple stirring blades 23, and they are arranged in multiple rows of annular equidistant arrays on the outer wall of the shaft 22.

[0042] Furthermore, the funnel-shaped feed hopper 12 makes it easier to add feed into the outer shell 11, reducing feed leakage. The feed hopper 12 is also equipped with a cap that can seal the top of the feed hopper 12. The L-shaped discharge pipe 13 allows the outlet to be aligned with the rearing pond, preventing the feeder from protruding too much. A stirring blade 23 is provided at the outer end of the shaft 22. Multiple stirring blades 23 can stir the water and algae, ensuring that the feed is mixed evenly.

[0043] Specifically, the detection mechanism 3 also includes an outer cylinder 31 and a detection rod 32. The upper end of the outer cylinder 31 penetrates the lower end of the outer shell 11 and extends to the upper part of the lower end of the outer shell 11, and rotates. The upper end of the detection rod 32 is fixedly connected to the lower end of the partition plate 24, and the lower end of the detection rod 32 penetrates the lower end of the outer shell 11, penetrates the outer cylinder 31, and extends to the outside of the lower end of the outer cylinder 31. The upper end of the detection head 33 is fixedly connected to the lower end of the detection rod 32. A cleaning rod 34 is fixedly attached to the lower end of the outer cylinder 31. The lower end of the cleaning rod 34 is hook-shaped. The surface of the detection head 33 contacts the hook surface of the lower end of the cleaning rod 34. A cleaning gear 35 is provided on the outer part of the outer cylinder 31 located on the inner wall of the outer shell 11. The cleaning gear 35 is connected to the drive gear 41 through a synchronous gear belt.

[0044] Furthermore, the outer cylinder 31 protrudes through the bottom of the outer shell 11 and can rotate at the bottom of the outer shell 11. The detection rod 32 is located inside the lower end of the outer cylinder 31 and extends out of the outer cylinder 31. The detection head 33 is fixed at the lower end of the detection rod 32 and does not remain fixed or move. The cleaning gear 35, driven by the drive gear 41, rotates. The cleaning gear 35 drives the outer shell 11 to rotate. The rotating outer shell 11 drives the cleaning rod 34 to move around the detection rod 32. The hook groove of the cleaning rod 34 will pass over the detection head 33 and scrape off the algae on the surface of the detection head 33 to prevent the attached algae from affecting the detection of the detection head 33.

[0045] Specifically, the transmission assembly 42 includes a ratchet block 421 and an arc groove 422. The surface of the ratchet block 421 is fixed to the inner wall of the drive gear 41. The ratchet block 421 is triangular in shape, and there are multiple ratchet blocks 421, which are arranged in an equidistant array on the inner wall of the drive gear 41. The arc groove 422 is opened on the bottom outer wall of the shaft 22. There are three arc grooves 422, which are arranged in an equidistant array on the outer wall of the shaft 22. A spring piece 423 is fixedly provided on the inner wall of the arc groove 422, and a pawl 424 is rotatably provided. The surface of the pawl 424 is in contact with the surface of the spring piece 423, and the surface of the pawl 424 is in contact with the surface of the ratchet block 421.

[0046] Furthermore, a triangular ratchet block 421 is disposed inside the drive gear 41. When the shaft 22 rotates clockwise, the inclined surface of the pawl 424 contacts the inclined surface of the ratchet block 421. Due to the inclined surface contact, effective meshing cannot be formed (i.e., "no gripping force is formed"). At this time, the ratchet block 421 will press against the pawl 424, causing the pawl 424 to rotate around its rotation point and compress the spring 423, resulting in the pawl 424 retracting into the arc groove 422. Therefore, during the clockwise rotation of the shaft 22, the ratchet block 421... (And the drive gear 41) will not be driven by the pawl 424 to rotate. When the shaft 22 reverses, under the elastic force of the spring plate 423, the pawl 424 will pop out and reset. At this time, the tip (protruding point) of the pawl 424 will abut against the vertical surface (right angle surface) of the ratchet block 421. In this way, the reverse movement of the shaft 22 can push the ratchet block 421 through the pawl 424, thereby driving the drive gear 41 to rotate, so that the drive gear 41 can rotate to transmit power to other gears.

[0047] Specifically, the outer wall of the discharge pipe 13 is provided with an annular groove, the surface of the feeding gear 43 is in contact with the inner wall of the annular groove provided on the outer wall of the discharge pipe 13, the feeding gear 43 is connected to the drive gear 41 through a synchronous gear belt, the first cone bottom 45 and the second cone bottom 46 have the same structure, and both have holes for discharge on their surfaces.

[0048] Furthermore, the annular groove opened at the outer end of the discharge pipe 13 is used to place the feeding gear 43, so that the feeding gear 43 can rotate inside the annular groove to drive the feeding pipe to rotate. The drive gear 41 can drive the feeding gear 43 to rotate through the synchronous gear belt. When feeding, the holes on the first cone bottom 45 and the second cone bottom 46 will be aligned to allow the bait to leak out and be released. When feeding stops, the holes on the first cone bottom 45 and the second cone bottom 46 will be misaligned. This misalignment is achieved by the preset rotation time of the stepper motor 21. Moreover, when reversing, the efficiency of the stepper motor 21 will be very slow and will not drive the feeding cylinder 44 to rotate at high speed.

[0049] In use, water and algae are added into the shell 11 through the feed hopper 12 on the shell mechanism 1. A discharge pipe 13 is provided at the bottom of the shell 11. Feed can be discharged through the discharge pipe 13, allowing the feed to enter the pond. Moreover, the discharge pipe 13 is L-shaped, allowing the feed to slide further and not concentrate at the edge of the nursery pond.

[0050] A stirring mechanism 2 is provided below the shell mechanism 1. When the bait is put into the shell 11 and above the partition 24, the stepper motor 21 is started to rotate forward, driving the shaft 22 to rotate. The rotating shaft 22 drives the stirring blade 23 to rotate inside the shell 11 to stir the water and algae on the partition 24, so that the bait is mixed evenly.

[0051] The feeding process is controlled by the detection mechanism 3. The outer cylinder 31 of the detection mechanism 3 is embedded in the bottom of the outer shell 11 and can rotate at the bottom. Inside the outer shell 11, there is a detection rod 32, which is fixed to the lower end of the partition 24. The detection head 33 at the lower end of the detection rod 32 can detect the algae in the seedling pond to determine whether feeding is necessary. A cleaning rod 34 is set below the outer cylinder 31. The lower part of the cleaning rod 34 is attached to the surface of the detection head 33. The drive gear 41 drives the cleaning gear 35 to rotate through the synchronous gear belt. The cleaning gear 35 drives the outer cylinder 31 to rotate. The rotating outer cylinder 31 will rotate around the detection rod 32 through the cleaning rod 34. The cleaning rod scrapes the surface of the detection head 33 to prevent the algae adhering to the detection head 33 from affecting the normal detection of the detection head 33.

[0052] When feeding material using the metering mechanism 4, the stepper motor 21 rotates in the reverse direction. This reverse force is transmitted to the drive gear 41 through the transmission assembly 42. Under the elastic force of the spring piece 423 inside the arc groove 422 of the transmission assembly 42, the pawl 424 pops out and resets. The tip of the pawl 424 abuts against the vertical surface of the ratchet block 421. The reverse movement of the shaft 22 can push the ratchet block 421 through the pawl 424, thereby driving the drive gear 41 to rotate. The rotating drive gear 41 will drive the feeding gear 43 to rotate through the synchronous gear belt. Gear 43 drives the feeding cylinder 44 to rotate. The rotating feeding cylinder 44 will cause the first cone bottom 45 and the second cone bottom 46 to be misaligned, thereby aligning the holes opened on the first cone bottom 45 and the second cone bottom 46. This allows the feed to pass through the feeding cylinder 44 and be discharged from the discharge pipe 13 into the nursery pond. Moreover, the stepper motor 21 selects a very slow speed when it reverses. When the set start time of the stepper motor 21 is reached, the stepper motor 21 stops. At this time, the transmission of the drive gear 41 ends. At this time, the holes on the first cone bottom 45 and the second cone bottom 46 are misaligned, and the discharge stops.

[0053] In summary, the bait added to the inside of the outer shell 11 is stirred by the forward-rotating shaft 22 driven by the stepper motor 21, making the bait mixing more convenient. Moreover, the reverse rotation of the stepper motor 21 will drive the drive gear 41 to rotate through the transmission component 42. The rotating drive gear 41 will drive the cleaning gear 35 and the feeding gear 43 to rotate through the synchronous gear belt. The rotating cleaning gear 35 will drive the cleaning rod 34 to clean the detection head 33 through the outer cylinder 31. The rotating feeding gear 43 will drive the feeding cylinder 44 to rotate, so that the first cone bottom 45 and the second cone bottom 46 are staggered for feeding.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quantitative feeder for scallop seedlings, characterized in that: It includes a shell mechanism (1) for loading and unloading feed for scallop seedlings. The housing mechanism (1) includes a housing (11), the upper end of which is provided with a feeding hopper (12) for feeding action, and the lower end of the housing (11) is sleeved with a discharge pipe (13) for discharging action. The shell mechanism (1) is equipped with a stirring mechanism (2) for mixing the scallop seedling feed. The stirring mechanism (2) includes a stepper motor (21) and a partition (24). The stepper motor (21) is fixedly installed on the lower outer wall of the outer shell (11). The partition (24) is fixedly connected to the lower inner wall of the outer shell (11). The output end of the stepper motor (21) is fixedly connected to a shaft (22). The shaft (22) passes through the bottom plate of the outer shell (11), passes through the partition (24), and is rotatably connected to the top of the outer shell (11). The lower end of the shell mechanism (1) is provided with a detection mechanism (3) for detecting the scallop seedling pond. The testing mechanism (3) includes a testing head (33) for testing scallop seedling ponds; The housing (11) is provided with a metering mechanism (4) for controlling the feeding action. The quantitative mechanism (4) includes a drive gear (41), a transmission assembly (42), a feeding gear (43), and a feeding cylinder (44). The inside of the drive gear (41) and the outer wall of the shaft (22) are limited to rotate through the transmission assembly (42). The feeding cylinder (44) is movably sleeved inside the discharge pipe (13). The outer wall of the feeding cylinder (44) is sleeved with the feeding gear (43). The lower end of the feeding cylinder (44) is fixedly connected to a first conical bottom (45). The lower end of the first conical bottom (45) is provided with a second conical bottom (46), and the second conical bottom (46) is fixedly arranged inside the discharge pipe (13).

2. The scallop seedling feed metering device as described in claim 1, characterized in that: The feed hopper (12) is funnel-shaped, and the upper end of the feed hopper (12) is detachably connected with a cylinder cover. The discharge pipe (13) is "L"-shaped.

3. The scallop seedling feed metering device as described in claim 2, characterized in that: The outer wall of the shaft (22) is provided with stirring blades (23) on the portion of the outer shell (11) and partition (24). There are multiple stirring blades (23), and they are arranged in a multi-row annular equidistant array on the outer wall of the shaft (22).

4. A quantitative feeder for scallop seedlings as described in claim 3, characterized in that: The detection mechanism (3) further includes an outer cylinder (31) and a detection rod (32). The upper end of the outer cylinder (31) penetrates the lower end of the outer shell (11) and extends to the upper part of the lower end of the outer shell (11), and rotates. The upper end of the detection rod (32) is fixedly connected to the lower end of the partition (24). The lower end of the detection rod (32) penetrates the lower end of the outer shell (11), penetrates the outer cylinder (31), and extends to the outside of the lower end of the outer cylinder (31). The upper end of the detection head (33) is fixedly connected to the lower end of the detection rod (32).

5. A quantitative feeder for scallop seedlings as described in claim 4, characterized in that: A cleaning rod (34) is fixed to the lower end of the outer cylinder (31). The lower end of the cleaning rod (34) is in the shape of a hook. The surface of the detection head (33) is in contact with the hook surface at the lower end of the cleaning rod (34). A cleaning gear (35) is provided on the part of the outer cylinder (31) located on the inner wall of the outer shell (11). The cleaning gear (35) is connected to the drive gear (41) through a synchronous gear belt.

6. A quantitative feeder for scallop seedlings as described in claim 5, characterized in that: The transmission assembly (42) includes a ratchet block (421) and an arc groove (422). The surface of the ratchet block (421) is fixed to the inner wall of the drive gear (41). The ratchet block (421) is triangular in shape. There are multiple ratchet blocks (421) and they are arranged in an equidistant array on the inner wall of the drive gear (41). The arc groove (422) is opened on the bottom outer wall of the shaft (22). There are three arc grooves (422) and they are arranged in an equidistant array on the outer wall of the shaft (22). A spring piece (423) is fixedly provided on the inner wall of the arc groove (422), and a pawl (424) is rotatably provided. The surface of the pawl (424) is in contact with the surface of the spring piece (423), and the surface of the pawl (424) is in contact with the surface of the ratchet block (421).

7. A quantitative feeder for scallop seedlings as described in claim 6, characterized in that: The outer wall of the discharge pipe (13) is provided with an annular groove. The surface of the feeding gear (43) is in contact with the inner wall of the annular groove provided on the outer wall of the discharge pipe (13). The feeding gear (43) and the driving gear (41) are connected by a synchronous gear belt. The first cone bottom (45) and the second cone bottom (46) have the same structure and both have holes for discharge on their surfaces.

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