Discharging assembly for fertilizer applicator

Abstract

The utility model relates to a blanking assembly for a fertilizer distributor. The blanking assembly comprises a fertilizer box, an outer grooved wheel and a fertilizer discharging tongue, the outer grooved wheel is arranged in the fertilizer box and can rotate, material grooves and tooth ridges are arranged on the circumferential face of the outer grooved wheel at intervals, the fertilizer discharging tongue is located on the outer side of the circumferential face of the outer grooved wheel, a fertilizer channel is formed between the flow limiting face of the fertilizer discharging tongue and the outer grooved wheel, one end of the fertilizer discharging tongue is elastically connected with the fertilizer box, and the other end of the fertilizer discharging tongue faces the discharging port. The flow limiting surface can swing back and forth to adjust the fertilizer channel. The flow limiting surface adopts an arc-shaped design, the circle center faces the outer grooved wheel, the ridge of the outer grooved wheel is bent to form an arc part in the direction away from the flow limiting surface, the curvature of the arc part is gradually reduced in the flow guide direction, a plurality of arc-shaped stripping parts are arranged at one end, close to the flow limiting surface, of the arc part, the two ends of the trough are designed to be of an arc-shaped structure, and the arc direction deviates from the flow limiting surface, so that fertilizer can smoothly enter and leave the trough; and the arc part of the tooth ridge of the outer grooved wheel forms orthographic projection in the trough. According to the utility model, the blockage phenomenon can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to a feeding assembly for a fertilizer spreader. Background Art

[0002] Fertilization is one of the core technical links to ensure the increase of crop yield and quality. The key lies in timely and appropriate delivery of necessary nutrients to the root system of crops to stimulate root development and ensure that crops are fully nourished at all growth stages. Especially in high humidity working environments such as paddy fields, chemical fertilizers tend to absorb water and melt or even harden after contact with moist air. In this case, fertilizer particles tend to adhere to the fertilizer channel inside the fertilizer spreader, which not only greatly hinders the smooth discharge of fertilizers, but also may induce serious channel blockage problems, greatly weakening the efficiency and accuracy of fertilization operations.

[0003] At present, some fertilizer spreaders on the market are equipped with brush devices, which try to use brushes to clean the fertilizer channel to reduce the blockage caused by fertilizer adhesion. However, when the fertilizer is severely compacted or the fertilizer spreader is running at a low speed, the simple brush cleaning method is often difficult to completely overcome the adhesion problem, which may lead to uneven fertilization or even failure to complete the normal fertilization task. Utility Model Content

[0004] The utility model aims to provide a feeding assembly for a fertilizer spreader, so as to solve the problem in the above background technology that fertilizer particles are difficult to be effectively removed after being adhered inside the fertilizer spreader, thus causing blockage and the like.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A feeding assembly for a fertilizer spreading machine, characterized in that it comprises:

[0007] A fertilizer box, an outer groove wheel and a fertilizer discharge tongue, wherein the fertilizer box has a discharge port; the outer groove wheel is arranged in the fertilizer box, and both ends of the outer groove wheel are rotatably connected to the fertilizer box; a plurality of material troughs are arranged at intervals along the circumferential surface of the outer groove wheel, and tooth ridges are formed between adjacent material troughs; the fertilizer discharge tongue is arranged in the fertilizer box, and is located on the outside of the circumferential surface of the outer groove wheel; a side of the fertilizer discharge tongue close to the outer groove wheel is a flow limiting surface, and a fertilizer channel is formed between the outer groove wheel and the flow limiting surface, one end of the fertilizer discharge tongue is elastically connected to the fertilizer box, and the other end faces the discharge port of the fertilizer box; wherein, when the outer groove wheel rotates, under the centrifugal force of the tooth ridges of the outer groove wheel, all points on the flow limiting surface can reciprocate with the elastic connection end of the fertilizer discharge tongue as the axis, so as to adjust the fertilizer channel.

[0008] Furthermore, the flow limiting surface is an arc surface, and the flow limiting surface is arranged along the circumferential surface of the outer groove wheel, and the center of the circle faces the outer groove wheel.

[0009] Furthermore, the tooth ridge of the outer groove wheel is bent away from the flow guiding direction of the flow limiting surface to form an arc portion.

[0010] Furthermore, the curvature of the arc portion decreases along the flow guiding direction of the flow limiting surface.

[0011] Furthermore, a plurality of peeling portions are formed at one end of the arc portion close to the flow limiting surface. The plurality of peeling portions are arc-shaped, and the center of the circle is oriented in the same direction as the arc portion.

[0012] Furthermore, an end of the peeling portion close to the flow-limiting surface protrudes further outward than an end of the peeling portion far from the flow-limiting surface.

[0013] Furthermore, both ends of the material trough are arranged in an arc shape, and the center of the arc is away from the flow guiding direction of the flow limiting surface.

[0014] Furthermore, the arc portion of the outer groove wheel tooth ridge has a positive projection in the material trough.

[0015] The advantages of the feeder assembly for a fertilizer spreader described in the utility model over the prior art are:

[0016] Through the elastic connection design of the fertilizer discharge tongue, a tight fit is formed between the outer groove wheel tooth ridge and the flow limiting surface of the fertilizer discharge tongue. When faced with fertilizer adhesion and severe compaction problems, even if conventional cleaning methods are difficult to work, the centrifugal force generated by the rotation of the outer groove wheel can directly act on the fertilizer particles adhered to the fertilizer channel, and indirectly cause the fertilizer discharge tongue to swing back and forth with the elastic connection end as the axis. This linkage mechanism not only helps to continuously loosen and remove adhered fertilizer, but also can always keep the fertilizer channel open, thereby effectively avoiding the occurrence of blockage. This design ensures that the fertilizer spreader can maintain good fertilizer channel patency and fertilization stability even under adverse conditions such as high humidity or easy compaction of fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the planar structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the planar structure of the outer groove wheel and the fertilizer discharge tongue of the utility model;

[0019] Figure 3 It is a partial schematic diagram of the utility model;

[0020] Figure 4 It is an enlarged view of the peeling part of the utility model.

[0021] Markings and corresponding parts names in the attached drawings:

[0022] 10. Fertilizer box, 101. Feed inlet, 102. Discharge outlet, 20. Outer groove wheel, 201. Material trough, 202. Tooth ridge, 30. Fertilizer discharge tongue, 301. Flow limiting surface, 302. Fertilizer channel, 40. Stripping part. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Embodiment 1:

[0025] like Figure 1-2 As shown, a feeding assembly for a fertilizer spreader provided in this embodiment includes a fertilizer box 10, an outer groove wheel 20, and a fertilizer discharge tongue 30. A feeding port 101 is arranged at the upper end of the fertilizer box 10, and the feeding port 101 is designed to be inclined inward. The inclined feeding port 101 can naturally guide the fertilizer to slide to the bottom of the fertilizer box 10 and concentrate in the direction of the fertilizer channel 302, ensuring that the fertilizer can smoothly enter the material trough 201 of the outer groove wheel 20. A discharging port 102 is arranged at the lower end of the fertilizer box 10 for transporting the fertilizer to the field soil.

[0026] The outer groove wheel 20 is precisely installed in the inner core area of ​​the fertilizer box 10, and the two ends are firmly and flexibly connected to the fertilizer box 10 through high-precision rotating connectors, ensuring that the outer groove wheel 20 can rotate freely in the fertilizer box 10 smoothly, thereby effectively controlling the release and transportation of fertilizer. A transmission shaft is installed at one end of the outer groove wheel 20, which is responsible for accurately transmitting the rotational kinetic energy of an external power source, such as a tractor's power output shaft, to the outer groove wheel 20, ensuring that the outer groove wheel 20 rotates at a predetermined speed and direction.

[0027] It is worth noting that in order to ensure maximum transmission efficiency and sufficient structural strength, the outer groove wheel 20 and the transmission shaft are often manufactured using an integrated molding process. This method not only improves the connection strength between the two, reduces wear and energy loss between parts, but also simplifies the assembly steps and improves the stability and service life of the overall structure. In practical applications, the one-piece outer groove wheel 20 and the transmission shaft combination can withstand long-term high-intensity operations, adapt to various complex and harsh farmland operating environments, and provide a solid foundation for the efficient operation of the fertilizer spreader.

[0028] A plurality of troughs 201 are evenly spaced along the circumferential surface of the outer groove wheel 20. The tooth ridge 202 structure formed between the troughs 201 has unique mechanical properties. During the rotation of the outer groove wheel 20, the tooth ridge 202 can effectively carry and quantitatively distribute the fertilizer particles by virtue of the centrifugal force, ensuring that each fertilizer can pass through the trough 201 in the appropriate time window and smoothly enter the fertilizer channel 302.

[0029] The fertilizer discharge tongue 30 is located outside the circumferential surface of the outer groove wheel 20, and the side close to the outer groove wheel 20 is a flow limiting surface 301. The gap between the flow limiting surface 301 and the outer groove wheel 20 together constitutes an important passage for the fertilizer to pass through. The design of the fertilizer discharge tongue 30 is very clever, and one end of it adopts an elastic connection design, such as a spring, a rubber part or a hydraulic mechanism, so that the fertilizer discharge tongue 30 can flexibly swing back and forth with the rotation of the outer groove wheel 20 and the loading of the fertilizer, so as to accurately control the opening and closing of the fertilizer channel 302, and effectively prevent the fertilizer channel 302 from being blocked due to fertilizer adhesion, compaction and other problems.

[0030] In specific implementation, a highly sensitive return spring can be selected as an elastic connection element between the fertilizer discharge tongue 30 and the fertilizer box 10. Specifically, the return spring is fixedly connected to one end of the fertilizer discharge tongue 30 and the inside of the fertilizer box 10 through a set of bolt structures. When designing, it should be ensured that when the fertilizer discharge tongue 30 is in the initial position not affected by the rotation of the outer groove wheel 20, the return spring is in a relaxed state, that is, in a state of no elastic force or minimum elastic force, so that the fertilizer discharge tongue 30 can flexibly respond to the change of centrifugal force caused by the rotation of the outer groove wheel 20, thereby realizing precise adjustment of the fertilizer channel 302.

[0031] In actual application, when the outer groove wheel 20 is driven by a motor or other power device to rotate, due to the centrifugal force, the tooth ridges 202 thereon can effectively throw the fertilizer particles in the trough 201 to the fertilizer channel 302, and separate and push the fertilizer particles that may adhere to the inner wall of the fertilizer channel 302. This centrifugal force can not only directly act on the fertilizer particles, so that the fertilizer particles are accelerated through the fertilizer channel 302 under the action of the centrifugal force, but also indirectly affect the movement state of the fertilizer discharge tongue 30.

[0032] Specifically, when the tooth ridge 202 of the outer groove wheel 20 contacts or approaches the inner wall of the fertilizer channel 302, the force transmitted to the fertilizer particles by the centrifugal force will also be transmitted to the flow limiting surface 301 of the fertilizer discharge tongue 30, so that the elastically connected fertilizer discharge tongue 30 regularly swings back and forth with the connection end as the axis. This swing of the fertilizer discharge tongue 30 can not only help remove the adhering fertilizer particles and keep the fertilizer channel 302 unobstructed, but also automatically adjust the channel opening according to the changes in the rotation speed of the outer groove wheel 20 and the fertilizer flow rate, so as to achieve accurate distribution and continuous discharge of fertilizer.

[0033] In general, the present design ingeniously utilizes the centrifugal force generated by the rotation of the outer groove wheel 20, and through the dual mechanism of directly acting on the fertilizer particles and indirectly affecting the fertilizer discharge tongue 30, effectively solves the problem of fertilizer adhesion and clogging under wet working conditions, and improves the reliability and working efficiency of the fertilizer spreader.

[0034] Embodiment 2:

[0035] like Figure 2 As shown, based on the above embodiment, the limiting surface 301 is an arc surface, and the limiting surface 301 is arranged along the circumferential surface of the outer groove wheel 20, and its center faces the outer groove wheel 20. The material of the limiting surface 301 can be selected from polymer composite materials, such as nylon, polyurethane, etc. Such materials have good chemical stability, toughness and self-lubricating properties, and are suitable for occasions with light wear and noise reduction. The limiting surface 301 made of such material is not easy to react chemically with fertilizers, and can reduce the impact damage of particles on the surface.

[0036] In specific implementation, the design details of the cambered limiting surface 301 are particularly important. The curvature of the limiting surface 301 should be carefully calculated to ensure that it forms the best match with the tooth ridge 202 of the outer groove wheel 20 in terms of geometry and mechanical properties. When the fertilizer particles slide out of the trough 201 of the outer groove wheel 20, the smooth transition characteristics of the cambered limiting surface 301 help reduce the accumulation or damage of the particles caused by sudden turns or collisions, so that the fertilizer particles can enter the fertilizer channel 302 more smoothly, greatly reducing the risk of channel blockage caused by particle accumulation.

[0037] On the other hand, the center of the limiting surface 301 is deliberately oriented toward the central axis of the outer groove wheel 20, which means that when the outer groove wheel 20 rotates at high speed, due to the centrifugal force, the fertilizer particles will be subjected to a greater outward thrust when approaching the limiting surface 301. This design is not only conducive to the fertilizer particles to escape from the limiting surface 301 more quickly and enter the fertilizer channel 302, but also can adjust the opening of the fertilizer channel 302 in real time and sensitively through the change of centrifugal force. When the speed of the outer groove wheel 20 increases, the centrifugal force increases accordingly, which can temporarily expand the fertilizer channel 302 and increase the amount of fertilizer discharged per unit time; conversely, when the speed decreases, the centrifugal force decreases, the fertilizer channel 302 shrinks, and the fertilizer discharge speed is reduced, thereby achieving precise control of the amount of fertilizer applied.

[0038] In actual design, the width of the flow restriction surface 301 is a crucial parameter, and the width of the flow restriction surface 301 should be slightly larger than the width of the outer groove wheel 20. This ensures that when the outer groove wheel 20 rotates, no matter which trough 201 the fertilizer particles fall from, there is enough area of ​​the flow restriction surface 301 to receive and guide the fertilizer into the fertilizer channel 302, preventing the fertilizer from leaking out from both sides of the flow restriction surface 301, and ensuring the accuracy and integrity of fertilizer transportation.

[0039] Embodiment 3:

[0040] On the basis of the above-mentioned embodiment, the design of the tooth ridge 202 of the outer groove wheel 20 is further optimized. The tooth ridge 202 is bent away from the flow diversion direction of the limiting surface 301 of the fertilizer discharge tongue 30 to form an arc structure. Specifically, the arc-shaped tooth ridge 202 will exert a fluctuating force on the fertilizer discharge tongue 30 during rotation. This dynamic action helps to cooperate with the elastic swing of the fertilizer discharge tongue 30 to achieve intelligent adjustment of the fertilizer channel 302, so as to maintain a stable fertilizer supply under different fertilization speeds and fertilizer types to prevent blockage.

[0041] At the same time, the tooth ridge 202 of the outer groove wheel 20 is not a traditional straight structure, but is bent into an arc in the direction away from the guide surface. The advantage of this is that when the outer groove wheel 20 rotates, the fertilizer particles on the tooth ridge 202 are more likely to slide toward and pass through the limiting surface 301 under the action of centrifugal force and enter the fertilizer channel 302, thereby reducing the risk of particles getting stuck at the intersection of the tooth ridge 202 and the limiting surface 301.

[0042] Embodiment 4:

[0043] like Figure 3 As shown, based on the above embodiment, the curvature of the arc portion decreases along the flow guiding direction of the limiting surface 301, that is, the closer to the entrance of the fertilizer channel 302, the smaller the curvature of the arc, forming a funnel-shaped transition structure. This curvature decreasing design is not only conducive to removing the fertilizer adhered to the fertilizer channel 302, but also can continuously adjust the opening of the fertilizer channel 302.

[0044] Specifically, when the fertilizer spreader is operated in a humid environment or an environment with high fertilizer viscosity, fertilizer particles may be seriously adhered in the fertilizer channel 302. At this time, during the rotation of the outer groove wheel 20, the arc portion with decreasing curvature contacts the fertilizer adhered in the fertilizer channel 302. Due to the special shape of the arc portion, it applies a continuous and changing shear force to the adhered fertilizer when passing through, thereby helping to peel off the adhered fertilizer particles layer by layer.

[0045] If the fertilizer is too sticky and the peeling force is insufficient by simply rotating the arc portion, the arc portion will also generate a force on the fertilizer discharge tongue 30 by contacting the adhering fertilizer when rotating with the outer groove wheel 20. When the arc portion contacts the adhering fertilizer and applies centrifugal force to the flow limiting surface 301, the fertilizer discharge tongue 30 will first swing away from the arc portion due to the influence of the external force. Subsequently, under the action of the elastic connection between the fertilizer discharge tongue 30 and the fertilizer box 10, the fertilizer discharge tongue 30 will produce a restoring action and move closer to the arc portion.

[0046] Since the curvature of the arc decreases along the flow-guiding direction of the limiting surface 301, the fertilizer discharge tongue 30 is once again subjected to the centrifugal force caused by the rotation of the outer groove wheel 20 before it completely returns to the initial position, and this cycle is repeated to achieve continuous adjustment of the fertilizer channel 302 to prevent blockage caused by fertilizer adhesion.

[0047] At the same time, this dynamic adjustment mechanism can also enhance the centrifugal separation effect of fertilizer particles. As the outer groove wheel 20 continues to rotate, the curvature of the arc changes so that the fertilizer discharge tongue 30 continuously applies periodic shearing and peeling forces to the adhering fertilizer during repeated swinging, so that even stubbornly adhering fertilizer can be gradually removed.

[0048] Embodiment 5:

[0049] On the basis of the above embodiment, a plurality of arc-shaped stripping portions 40 are designed at one end of the arc portion close to the flow limiting surface 301, and the arc-shaped structures of the stripping portions 40 are consistent with the curvature of the main arc portion, that is, their center of circle is also oriented in the same direction as the arc portion. This design is intended to enhance the stripping effect of the fertilizer particles adhered to the fertilizer channel 302.

[0050] Specifically, the stripping portion 40 can be in the form of a series of small arc-shaped protrusions or small arc-shaped grooves formed by cutting. When the outer groove wheel 20 rotates, these stripping portions 40 can more effectively contact the fertilizer particles adhered to the flow-limiting surface 301 under the action of centrifugal force, just like a micro plowshare, through continuous cutting and scraping, the fertilizer particles that are originally difficult to separate from the flow-limiting surface 301 are decomposed and stripped one by one, thereby ensuring that the fertilizer channel 302 is unobstructed.

[0051] For example, the stripping portion 40 may be composed of a series of small arc-shaped blades made of carbide or ceramic, which are embedded in the end of the arc near the flow restriction surface 301. When the outer groove wheel 20 rotates, the blades move with the arc, and their sharp edges produce a cutting effect on the adhering fertilizer, effectively preventing the fertilizer from accumulating and clogging at the entrance of the fertilizer channel 302. At the same time, since the arc design of these stripping portions 40 is consistent with the curvature of the main arc, they can perfectly match the overall flow channel design of the fertilizer channel 302 when acting on the fertilizer particles, and together achieve precise regulation and continuous delivery of the fertilizer flow.

[0052] Embodiment 6:

[0053] like Figure 4 As shown, based on the above embodiment, the end of the stripping portion 40 close to the flow limiting surface 301 is designed to protrude more outward than the end away from the flow limiting surface 301. This structural feature is specially designed to improve the stripping effect and prevent the fertilizer channel 302 from being blocked.

[0054] For example, the stripping portion 40 may be a structure that gradually thickens along the arc contour direction, like a string of closely arranged blades, with the thickness at the front end (close to the flow-limiting surface 301) being the largest, forming a wedge shape that gradually expands outward. During operation, as the outer groove wheel 20 rotates, these wedge structures can act on the fertilizer particles with a higher force, which not only helps to separate the adhering fertilizer, but also increases the centrifugal separation effect of the fertilizer particles, further improving the smoothness of the fertilizer channel 302.

[0055] Embodiment 7:

[0056] On the basis of the above-mentioned embodiment, both ends of the trough 201 are arranged in an arc shape, and the center of the arc is away from the flow-guiding direction of the flow-limiting surface 301. The arc design at both ends of the trough 201 helps to guide the fertilizer particles from the trough 201 to enter the fertilizer channel 302 more smoothly. When the fertilizer particles in the trough 201 are subjected to the centrifugal force generated by the rotation of the outer groove wheel 20, the two ends of the arc-shaped trough 201 can provide a gradual transition space, so that the fertilizer particles can smoothly transition to the flow-limiting surface 301, and reduce the possibility of particles being piled up at the intersection of the trough 201 and the flow-limiting surface 301 due to speed changes.

[0057] For example, the arc-shaped design at both ends of the trough 201 is semicircular. When the fertilizer particles slide from one end of the trough 201 to the other end, due to the existence of the arc structure, the particles are gradually accelerated along the arc wall under the action of centrifugal force, and reach the limiting surface 301 at a relatively smooth speed and posture, avoiding accumulation due to sudden changes in speed, ensuring that the fertilizer particles can smoothly enter the fertilizer channel 302, thereby effectively preventing the occurrence of blockage.

[0058] Embodiment 8:

[0059] On the basis of the above embodiment, the arc portion of the tooth ridge 202 of the outer groove wheel 20 has a positive projection in the trough 201. The arc shape of the tooth ridge 202 of the outer groove wheel 20 matches the shape of the trough 201. When the outer groove wheel 20 rotates, the arc portion of the tooth ridge 202 can form a complete projection in the trough 201, which means that the trough 201 can make full use of the volume space of the outer groove wheel 20, increase the capacity of each fertilizer loading, and thus improve the fertilizer filling efficiency.

[0060] Specifically, the tooth ridge 202 on the outer groove wheel 20 can be a semicircular arc surface. When we regard the cross section of the outer groove wheel 20 as a two-dimensional plane, this semicircular arc will project a complete semicircular shadow in the material trough 201. In other words, the depth and width of the material trough 201 are designed to accommodate the entire tooth ridge 202 arc. In this way, during the rotation process, whether it is fully loaded with fertilizer or unloaded, the tooth ridge 202 can maintain good contact with the material trough 201, thereby ensuring that the fertilizer is smoothly transferred from the material trough 201 to the fertilizer channel 302.

[0061] Working principle:

[0062] When the device is in use, first put the fertilizer into the fertilizer box 10, and when the fertilizer spreader is started, the outer groove wheel 20 starts to rotate under the drive of the driving device. During the rotation of the material trough 201 on the outer groove wheel 20, due to the effect of centrifugal force, the fertilizer particles are gradually taken away from the material trough 201 and pushed to the flow limiting surface 301 of the fertilizer discharge tongue 30. The flow limiting surface 301 adopts an arc design, which is conducive to the smooth transition of the fertilizer particles along its curved surface to the fertilizer channel 302, reducing the accumulation and stagnation of the particles at the entrance of the channel.

[0063] At the same time, the arc design of the tooth ridge 202 of the outer groove wheel 20 and its positive projection in the trough 201 ensure the close combination of the trough 201 and the tooth ridge 202, so that the fertilizer particles can fully utilize the centrifugal force provided by the tooth ridge 202 and more efficiently transfer from the trough 201 to the fertilizer channel 302. The curvature of the tooth ridge 202 decreases along the flow-guiding direction of the limiting surface 301, and the stripping portion 40 is designed near one end of the limiting surface 301. These structures work together during the rotation process to effectively strip and remove the fertilizer particles adhering to the limiting surface 301 by increasing the contact area and enhancing the shear force, thereby further preventing the fertilizer channel 302 from being blocked.

[0064] Even if there are fertilizer particles in the fertilizer channel 302 that cannot be successfully peeled off, the centrifugal force transmitted to the fertilizer particles by the arc portion of the tooth ridge 202 of the outer groove wheel 20 will indirectly act on the limiting surface 301 of the fertilizer discharge tongue 30 through the fertilizer particles when the arc portion continues to rotate. Since one end of the fertilizer discharge tongue 30 is elastically connected to the fertilizer box 10, the transmission of this force will cause the fertilizer discharge tongue 30 to produce regular reciprocating swings. During the swinging process, the fertilizer discharge tongue 30 can, on the one hand, help further peel off the fertilizer particles adhering to the limiting surface 301, and on the other hand, dynamically adjust the opening and closing degree of the fertilizer channel 302 through its own swing amplitude and frequency, ensuring that even when facing fertilizers with strong viscosity or high humidity, the channel can be effectively prevented from being blocked, and the continuous and uniform discharge of fertilizer can be achieved. This design ensures that the fertilizer spreader can still maintain high operating efficiency and stability under different working conditions.

[0065] When multiple illustrative embodiments are mentioned in this specification, it means that the specific structure described in conjunction with the embodiment is included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a structure is described in conjunction with any embodiment, it is claimed that the structure is implemented in conjunction with other embodiments within the scope of the utility model.

Claims

1. A feeding assembly for a fertilizer spreader, characterized in that: include: A fertilizer box, wherein the fertilizer box has a discharge port; An outer groove wheel, the outer groove wheel is arranged in the fertilizer box, and both ends of the outer groove wheel are rotatably connected to the fertilizer box; a plurality of material grooves are arranged at intervals along the circumferential surface of the outer groove wheel, and tooth ridges are formed between adjacent material grooves; A fertilizer discharge tongue, which is arranged in the fertilizer box and is located outside the circumferential surface of the outer groove wheel. A side of the fertilizer discharge tongue close to the outer groove wheel is a flow limiting surface, and a fertilizer channel is formed between the outer groove wheel and the flow limiting surface. One end of the fertilizer discharge tongue is elastically connected to the fertilizer box, and the other end faces the discharge port of the fertilizer box. When the outer groove wheel rotates, under the centrifugal force of the outer groove wheel tooth ridge, all points on the limiting surface can reciprocate around the elastic connection end of the fertilizer discharge tongue as the axis to adjust the fertilizer channel.

2. A feeding assembly for a fertilizer spreader according to claim 1, characterized in that: The flow-limiting surface is an arc surface, and the flow-limiting surface is arranged along the circumferential surface of the outer groove wheel, and the center of the circle faces the outer groove wheel.

3. A feeding assembly for a fertilizer spreading machine according to claim 1, characterized in that: The tooth ridge of the outer groove wheel is bent away from the flow guiding direction of the flow limiting surface to form an arc portion.

4. A feeding assembly for a fertilizer spreading machine according to claim 3, characterized in that: The curvature of the arc portion decreases along the flow guiding direction of the flow limiting surface.

5. A feeding assembly for a fertilizer spreading machine according to claim 4, characterized in that: A plurality of stripping portions are formed at one end of the arc portion close to the flow limiting surface. The plurality of stripping portions are arc-shaped, and the center of the circle is in the same direction as the arc portion.

6. A feeding assembly for a fertilizer spreading machine according to claim 5, characterized in that: An end of the peeling portion close to the flow-limiting surface protrudes further outward than an end of the peeling portion far from the flow-limiting surface.

7. A feeding assembly for a fertilizer spreading machine according to claim 1, characterized in that: Both ends of the material trough are arranged in an arc shape, and the center of the arc is away from the flow guiding direction of the flow limiting surface.

8. A feeding assembly for a fertilizer spreading machine according to claim 4, characterized in that: The arc portion of the outer groove wheel tooth ridge has an orthographic projection in the material trough.

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