A method for end-point feeding based on the feeding range

Abstract

This invention provides a method for end-feeding based on the feeding range, achieved through an end-feeding device, comprising the following steps: S1, preset the radius of the feeding range and select an end-feeding device; S2, pour feed into the feeding assembly and drive the feeding assembly to rotate around its axis; S3, when the feed rotates with the blades to the notch, it is released from the constraint of the shell, and the blades at the highest point from the bottom of the end-feeding device are determined to have an initial velocity v. 0x S4. After the feed is thrown, it undergoes projectile motion in the air. Determine the rate of change of velocity in the horizontal direction and the rate of change of velocity in the vertical direction. Determine the relationship between the horizontal position and time, as well as the relationship between the vertical position and time. S5. According to Euler's method, when the vertical position reaches h with a preset time step, if the horizontal position is less than or equal to the radius of the feeding range, it meets the requirements of the feeding range, preventing the feed from being thrown out of the feeding range and facilitating accurate feeding.

Description

Technical Field

[0001] This invention relates to the field of feeding technology, and more specifically to a method for end-point feeding based on the feeding range. Background Technology

[0002] In industrialized aquaculture scenarios, such as fish needing to be fed, the fish rearing sites include fish tanks or fish ponds. Generally, a fixed feeder in the center of the rearing site, such as the fish tank, is a common device for centralized feeding. However, in practical applications, there are still significant technical defects that make it difficult to match the needs of refined aquaculture. The traditional feed distribution scheme using pneumatic conveying further exacerbates these problems. For example, the fixed center feed distribution mode and the instability of pneumatic discharge will cause the feed to be unevenly distributed in the fish tank, triggering feeding competition among the fish, resulting in significant differences in individual growth rates and affecting the uniformity of aquaculture products.

[0003] Currently, all throwing devices can increase the accuracy of feeding to some extent, but the diffusion characteristics of air pressure feeding make the control accuracy of the feeding range still not high. Existing equipment lacks boundary recognition and range constraint mechanisms, and the feeding range is easy to exceed the fish tank boundary and fall to the ground, resulting in some feed loss. Therefore, it is necessary to determine the size of the throwing device according to the area of ​​the breeding site.

[0004] For example, patent document CN201910215324.X, published on March 11, 2022, discloses a discharge device and a pneumatic feeder including the same, belonging to the field of feeders. The discharge device includes: a discharge pipe; a throwing disc, the throwing disc being an inverted conical disc with its tip pointing downwards, the cross-section from the tip to the edge of the disc being arc-shaped; the throwing disc is suspended and fixed above the outlet of the discharge pipe, the tip of the throwing disc pointing towards the center of the outlet of the discharge pipe. A pneumatic feeder, the discharge port of which is provided with the aforementioned discharge device.

[0005] The above literature describes a feeding device that uses a suspended feeding disc above the outlet of the discharge pipe. Feed is conveyed by air and sprayed out of the discharge pipe. The thrown feed forms a trajectory on the lower surface of the feeding disc, and after reaching the edge of the feeding disc, it moves in a parabolic trajectory until it falls onto the water surface. Once the edge of the feeding disc is determined, the landing position of the thrown feed is also determined. This allows for gradient feeding without adjusting the position of the device. However, this method requires multiple tests to determine whether the feed will be thrown out of the fish tank. This makes the determination process of the feeding device complex, and if it is not accurate to determine whether the feed will be thrown out of the fish tank, the entire amount of feed will be wasted, resulting in poor feeding results. Summary of the Invention

[0006] This invention provides a method for end-point feeding based on the feeding range, which can control the feeding range according to the end-point feeding parameters to prevent feed from falling outside the feeding range.

[0007] To achieve the above objectives, one aspect of the technical solution provided by the present invention is: a method for end-feeding according to the feeding range, implemented by an end-feeding device, the end-feeding device comprising a feeding assembly disposed within a housing and a notch disposed on the housing, the feeding assembly comprising an axis and two or more sets of blades spaced apart along the axis, the blades rotating around the axis, the two or more sets of blades having different radii from the axis and different heights along the axial direction of the axis, comprising the following steps: S1. Preset the radius of the feeding range and select an end feeding device. The height and radius of the blade with the largest blade radius at the highest point from the bottom in the end feeding device are h and r, respectively, and the parameters of the feed. S2. Pour the feed into the throwing assembly and drive the throwing assembly to rotate around the axis; S3. When the feed rotates with the blade to the notch, it is released from the constraint of the shell. The blade at the highest point from the bottom in the end-feeding device is determined to have an initial velocity v. 0x Horizontally launched; the initial velocity v 0x Determined based on the blade angular velocity ω and the blade radius r; S4. After the feed is thrown, it undergoes projectile motion in the air. Determine the air resistance. Based on the air resistance, the horizontal component of the initial velocity, and the projectile velocity, determine the rate of change of velocity in the horizontal direction. Based on the air resistance, the vertical component of the initial velocity, and the projectile velocity, determine the rate of change of velocity in the vertical direction. Based on the rate of change of velocity in the horizontal direction and the rate of change of velocity in the vertical direction, determine the relationship between the horizontal position and time and the relationship between the vertical position and time, respectively. S5. When the vertical position reaches h according to the iterative method with a preset time step, if the horizontal position is less than or equal to the radius of the rearing range, then the rearing range requirement is met.

[0008] The above method involves placing feed into a feeding assembly and having a motor drive the assembly to rotate around its axis. Because the feed moves in a circular motion with blades of varying radii, blades at different heights can throw the feed with different initial velocities and heights without the mechanical constraints of a casing. By determining air resistance, the relationships between horizontal and vertical velocity and time are established. Furthermore, the relationships between horizontal and vertical positions and time are determined based on velocity changes. Then, an iterative method is used to determine the horizontal and vertical velocities, horizontal and vertical positions, and the overall position from the start of rotation with a preset time step. This allows for the determination of whether the horizontal position of the highest blade exceeds the radius of the feeding area when the vertical position reaches its maximum height. This ensures that the feeding range of the end-feeding device does not exceed the feeding area. The method is simple and ensures that the feeding range remains within the feeding area, preventing feed from falling outside the feeding area.

[0009] Furthermore, step S4 specifically includes the following steps: S41. Calculate the windward area S of the feed based on the feed particle size d, and then calculate the feed particle size d and feed density ρ. 料 Calculate the feed mass m, and then calculate the horizontal component v of the feed's projectile motion. x The vertical component of the velocity v of the feed undergoing projectile motion y Calculate the net velocity v of the feed; S42. Based on the feed's windward area S, the feed's net velocity v, and the air density ρ 空 The air resistance F is calculated from the air resistance coefficient C. 阻 .

[0010] S43, based on air resistance F 阻 The horizontal velocity component and the resultant velocity determine the horizontal rate of change of velocity, based on air resistance F. 阻 The vertical rate of change of velocity is determined by the vertical component of velocity, the resultant velocity, and the weight of the feed; the relationship between horizontal position and time is determined by the initial horizontal position, the horizontal rate of change of velocity, and time; and the relationship between vertical position and time is determined by the initial vertical position, the vertical rate of change of velocity, and time. S44. Numerical iteration is performed using the Euler method to calculate the horizontal position x and the vertical position of the spray.

[0011] Furthermore, the parameters of the feed in step S1 include feed particle size d and feed density ρ. 料 .

[0012] The above settings facilitate subsequent determination of feed quality.

[0013] Furthermore, the initial velocity determination in step S3 includes: calculating the initial velocity v using the blade angular velocity ω, blade radius r, and blade rotational speed n. 0x As shown in formula (1), (1).

[0014] The above method allows us to determine the initial velocity using the blade's angular velocity and radius.

[0015] Furthermore, step S41 includes: The windward area S of the feed is calculated using the feed particle size d, as shown in formula (2). (2); The feed mass m is determined by the feed particle size d and the feed density ρ. 料 The calculations show that, as shown in formula (3), (3); The resultant velocity v of the feed passes through the horizontal velocity component v of the feed undergoing projectile motion. x The vertical velocity component v of the feed undergoing projectile motion y The calculations show that, as shown in formula (4), (4).

[0016] The above methods allow for easy determination of the mixing speed based on the particle size and density of the feed.

[0017] Furthermore, step S42 includes using the feed's windward area S, the feed's net velocity v, and the air density ρ. 空 The air resistance F is calculated from the air resistance coefficient C. 阻 As shown in formula (5), (5).

[0018] The above method makes it easy to calculate resistance.

[0019] Furthermore, in step S43, "based on air resistance F" 阻 The rate of change of velocity level is determined by the horizontal component of velocity and the resultant velocity, as shown in formula (6). (6); F1 is the resultant force on the feed in the horizontal direction, m is the mass of the feed, v x The feed undergoes projectile motion, with the horizontal component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the frontal area of ​​the feed. In step S43, "based on air resistance F" 阻 The rate of change of velocity level is determined by the horizontal component of velocity and the resultant velocity, as shown in formula (7). (7); F2 is the net force acting on the feed in the vertical direction, m is the mass of the feed, and v is the net force acting on the feed. y The feed undergoes projectile motion, with the vertical component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the windward area of ​​the feed.

[0020] The above method allows us to calculate the horizontal and vertical rate of change of velocity by applying the resultant force in the horizontal and vertical directions.

[0021] Furthermore, in step S43, "determining the relationship between horizontal position and time based on the initial horizontal position and the rate of change of velocity with time, and determining the relationship between vertical position and time based on the initial vertical position and the rate of change of velocity with time" is achieved through formulas (8)-(10). (8); (9); (10); (11); t represents time, and Δt represents the preset time interval. This is the equation relating the horizontal velocity component of a projectile motion to time. The relationship between the vertical velocity component of the feed undergoing projectile motion and time; x(t) represents the horizontal position of the feed at time t, and y(t) represents the vertical position of the feed at time t. The horizontal component of velocity versus the rate of change over time; Let be the vertical component of velocity and the rate of change over time.

[0022] The above method determines the horizontal and vertical positions by using the relationship between time and speed.

[0023] Furthermore, the upper end of the housing is provided with a feed inlet and an upper shaft mounting port. The feed inlet is located outside the shaft mounting port, and the bottom of the housing is provided with a lower shaft mounting port. The upper and lower ends of the shaft are rotatably mounted on the upper and lower shaft mounting ports. The feed inlet is divided into two or more first feed inlets by a partition. The partition extends outward from the shaft, and the two or more partitions form two or more partitioned areas spaced apart along the circumference of the shaft. The partitioned areas are provided with outwardly extending blades and outwardly extending second partitions. One end of the second partition is connected to the side wall of the feed chamber, and both sides of the blade are connected to the first partition. An outlet is formed between the blade and the second partition, and the outlet is connected to the feed inlet on the partitioned area.

[0024] The above setup connects multiple feed inlets and outlets by setting up separation zones, with each feed inlet feeding material and the outlet discharging material through it.

[0025] Furthermore, the height of the blades in each segment from the bottom of the housing decreases sequentially along the axial direction of the axis, and the radius of the outermost edge of the blades in each segment from the center of the axis decreases sequentially along the circumferential direction of the axis. The blade with the highest distance from the bottom of the housing has the largest radius. The housing has a circular cross-section, and the size of the notch cross-section on the housing is 1 / 4 of the cross-section of the housing. The lower end of the housing has a guide surface that is inclined from the top to the bottom.

[0026] The above configuration, by setting a guide surface from top to bottom at the lower end of the housing, allows the radius of the blades in the throwing assembly to gradually decrease, while also facilitating the guiding function. By setting different diameters and heights of the blades, gradient throwing can be achieved along the rotation direction. Attached Figure Description

[0027] Figure 1 This is a flowchart of the present invention.

[0028] Figure 2 This is a schematic diagram of the movement trajectory of the feed of the present invention.

[0029] Figure 3 This is an exploded view of an embodiment of the present invention.

[0030] Figure 4 This is a side view of an embodiment of the present invention.

[0031] Figure 5 for Figure 4 Cross-sectional view of AA.

[0032] Figure 6 This is a schematic diagram of the material throwing component structure in one embodiment of the present invention.

[0033] Explanation of icon numbers: 10-End-feeding device; 11-First outer shell; 12-Second outer shell; 121-Vertical part; 122-Guide surface; 123-Lower shaft mounting port; 124-Notch; 2-Feeding port; 21-Upper shaft mounting port; 3-Feeding assembly; 31-Baffle; 32-Feeding cavity; 33-First baffle; 34-Blade; 35-Feeding port; 351-First feeding port; 352-Discharge port; 36-Shaft; 40-Feed; 41-Fish tank. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 6As shown, a method for end-feeding according to the feeding range is implemented by an end-feeding device 10. The end-feeding device 10 includes a housing, and a feeding assembly 3 is provided inside the housing. The feeding assembly 3 includes a feeding assembly including an axis and two or more sets of blades spaced apart in the axis direction. The blades rotate around the axis, and the two or more sets of blades have different radii from the axis and different heights along the axial direction of the axis.

[0036] In one embodiment, the end-feeding device includes a discharge port 2 at the upper end of the housing, an inlet 35 connected to the discharge port 2, and an upper shaft mounting port. The inlet 35 is located outside the upper shaft mounting port 21. A lower shaft mounting port 123 is provided at the bottom of the housing. The upper and lower ends of the shaft are rotatably mounted on the upper shaft mounting port 21 and the lower shaft mounting port 123. The inlet 35 is divided into two or more first inlet ports 351 by a partition 31. The partition 31 extends outward from the shaft 36. The two or more partitions 31 form two or more partitioned areas spaced apart along the circumferential direction of the shaft. The partitioned areas are provided with outwardly extending blades 34 and outwardly extending first partitions 33. One end of the first partition 33 is connected to the side wall of the inlet cavity 32, and both sides of the blades are connected to the partitions 31. The blades 34 and the first partitions 34 are connected together. A discharge port 352 is formed, which is connected to the feed port 35 on the partition. The height of the blades 35 on each partition from the bottom of the housing decreases sequentially along the axial direction of the axis. The housing includes a first outer shell 11 and a second outer shell 12. The first outer shell 11 is located at the top of the housing, and the second outer shell 12 is located at the bottom of the housing. The radius of the outermost edge of the blades 34 on each partition from the center of the axis decreases sequentially along the circumferential direction of the axis, and the radius of the blade 34 that is the highest from the bottom of the housing is the largest. The housing has a circular cross-section. The size of the cross-section of the notch 124 on the housing is 1 / 4 of the cross-section of the housing. The lower end of the outer shell, i.e. the lower end of the second outer shell 12, is provided with a guide surface 122 that is inclined from the top to the bottom. The second outer shell 12 includes a vertical part 121 connected to the first outer shell 11 and a guide surface 122.

[0037] In this embodiment, there are 8 partitions, and each partition is provided with a blade 34. The radii of the multiple blades 34 decrease sequentially in the counterclockwise direction along the circumferential direction of the axis. The height of the multiple blades 34 from the bottom of the housing decreases sequentially along the axial direction of the axis. The vertical part of the second outer shell 12 is a ring structure, the blades are fan-shaped, and the axis is rotated by an external drive motor.

[0038] In another embodiment, multiple partitions are provided, and each partition is provided with a blade 34. The radii of the multiple blades 34 are different along the circumferential direction of the axis. The blade sizes can be set at intervals, as long as the blade radii are different. The heights of the multiple blades 34 from the bottom of the housing are also different along the axial direction of the axis. The heights can be set at intervals, and they do not necessarily decrease sequentially. The blade with the largest height from the bottom of the housing has the largest radius.

[0039] like Figures 1 to 2 As shown, a method for end-feeding based on the rearing area is implemented using the aforementioned end-feeding device. In this embodiment, the rearing area is aquarium 41, and the method includes the following steps: S1. Preset the radius of the feeding area and select an end-feeding device. The height and radius of the blade with the largest radius at the highest point from the bottom in the end-feeding device are h and r, respectively. Feed parameters: Feed parameters include feed particle size d, feed density ρ. 料 . S2, feed 40 is poured into the throwing assembly 3; the throwing assembly is driven by the motor to rotate around the axis, and the feed 40 moves in a circular motion synchronously with the blades of different radii; S3, when the feed 40 rotates with the blade to the notch 124, it is released from the mechanical constraint of the second outer shell 12, corresponding to the initial velocity v. 0x Horizontally launched; the initial velocity v 0x It is calculated based on the blade angular velocity ω, blade radius r, and blade rotational speed n; S4. After the feed 40 is thrown out, it undergoes projectile motion in the air. Determine the air resistance. Based on the air resistance, the horizontal component of the velocity, and the projectile velocity, determine the rate of change of velocity in the horizontal direction. Based on the air resistance, the vertical component of the velocity, and the projectile velocity, determine the rate of change of velocity in the vertical direction. Based on the rate of change of velocity in the horizontal direction and the rate of change of velocity in the vertical direction, determine the relationship between the horizontal position and time and the relationship between the vertical position and time, respectively. S5. When the vertical position reaches h according to the Euler method with a preset time step, if the horizontal position is less than or equal to the radius of the rearing range, then the rearing range requirement is met.

[0040] Step S4 specifically includes the following steps: S41. Calculate the windward area S of the feed based on the feed particle size d, and then calculate the feed particle size d and feed density ρ. 料 Calculate the mass m of the feed, and then calculate the horizontal velocity component v of the feed undergoing projectile motion. x The vertical velocity component v of the feed undergoing projectile motion y Calculate the net velocity v of the feed; S42. Based on the feed's windward area S, the feed's net velocity v, and the air density ρ 空The air resistance F is calculated from the air resistance coefficient C. 阻 ; S43, based on air resistance F 阻 The horizontal velocity component and the resultant velocity determine the horizontal rate of change of velocity, based on air resistance F. 阻 The vertical rate of change of velocity is determined by the vertical component of velocity, the resultant velocity, and the weight of the feed; the relationship between horizontal position and time is determined by the initial horizontal position, the horizontal rate of change of velocity, and time; and the relationship between vertical position and time is determined by the initial vertical position, the vertical rate of change of velocity, and time. S44. Numerical iteration is performed using the Euler method to calculate the horizontal position x and the vertical position of the spray.

[0041] Specifically, in step S3, the initial velocity v is calculated using the blade angular velocity ω, the blade radius r, and the blade rotational speed n. 0x As shown in formula (1), (1); In step S41, the windward area S of the feed is calculated using the feed particle size d, as shown in formula (2). (2); The feed mass m is determined by the feed particle size d and the feed density ρ. 料 The calculations show that, as shown in formula (3), (3); The resultant velocity v of the feed passes through the horizontal velocity component v of the feed undergoing projectile motion. x The vertical velocity component v of the feed undergoing projectile motion y The calculations show that, as shown in formula (4), (4); In step S42, the feed's windward area S, the feed's combined velocity v, and the air density ρ are used as parameters. 空 The air resistance F is calculated from the air resistance coefficient C. 阻 As shown in formula (5), (5); In step S43, the rate of change of speed level is determined by formula (6). (6); F1 is the resultant force on the feed in the horizontal direction, m is the mass of the feed, v x The feed undergoes projectile motion, with the horizontal component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the windward area of ​​the feed.

[0042] The vertical rate of change of velocity is determined by formula (7). (7); F2 is the net force acting on the feed in the vertical direction, m is the mass of the feed, and v is the net force acting on the feed. yThe feed undergoes projectile motion, with the vertical component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the windward area of ​​the feed.

[0043] Based on the resultant force F1 acting on the feed in the horizontal direction and the resultant force F2 acting on the feed in the vertical direction, establish a coordinate system with the horizontal axis as the x-axis and the vertical downward axis as the y-axis. In step S43, "determining the relationship between horizontal position and time based on the initial horizontal position and the rate of change of velocity with time, and determining the relationship between vertical position and time based on the initial vertical position and the rate of change of velocity with time" is achieved through formulas (8)-(11). (8); (9); (10); (11); t represents time, and Δt represents the preset time interval. This is the equation relating the horizontal velocity component of a projectile motion to time. The relationship between the vertical velocity component of the feed undergoing projectile motion and time; x(t) represents the horizontal position of the feed at time t, and y(t) represents the vertical position of the feed at time t. The horizontal component of velocity versus the rate of change over time; Let be the vertical component of velocity and the rate of change over time.

[0044] In step S45, the Euler method numerical iteration method is used, starting from the initial time t=0, and the initial time-related parameters are set as follows: ; △t is taken as 0.01s, and values ​​are gradually obtained. The horizontal component of velocity, the vertical component of velocity, the horizontal position, and the vertical position are calculated at each time. During the iterative calculation, when y≥h, the iteration stops. At this time, x is the horizontal throwing distance after correcting for air resistance. The range gradient can be obtained based on the horizontal throwing distance x after correcting for air resistance. In this embodiment, h is the throwing height of feed 40 from each feed outlet with a different radius. When y=h, the size of the horizontal position x is determined, and x is compared with the radius R of the feeding range. If x is less than or equal to R, the throwing range will not exceed the fish tank.

[0045] The working principle of this invention is as follows: By placing feed 40 into the throwing assembly 3 and driving the throwing assembly 3 to rotate around the axis by a motor, the feed moves in a circular motion with blades of different radii, allowing the feed to be thrown out at different initial velocities and heights without the mechanical constraint of the outer shell. Given the air resistance, the relationship between speed and time in the horizontal direction and the relationship between speed and time in the vertical direction are determined. The relationship between horizontal position and vertical position and time is determined by the speed changes. Then, the horizontal speed, vertical speed, horizontal position, and vertical position can be determined by an iterative method starting from the beginning of rotation with a preset time step. It can then be determined whether the horizontal position of the highest blade exceeds the radius of the feeding range when the vertical position reaches the height of the highest blade. This ensures that the throwing range of the end-point throwing device does not exceed the feeding range. The determination method is simple and ensures that the throwing range is within the feeding range, preventing feed from falling outside the feeding range.

Claims

1. A method for end-feeding according to the feeding range, achieved by an end-feeding device, characterized in that: The end-of-line throwing device includes a throwing assembly disposed within a housing and a notch disposed on the housing. The throwing assembly includes a shaft and two or more sets of blades spaced apart along the shaft axis. The blades rotate around the shaft axis, and the two or more sets of blades have different radii from the shaft axis and different heights along the axial direction of the shaft axis. The device includes the following steps: S1. Preset the radius of the feeding range and select an end feeding device. The height and radius of the blade with the largest blade radius at the highest point from the bottom in the end feeding device are h and r, respectively, and the parameters of the feed. S2. Pour the feed into the throwing assembly and drive the throwing assembly to rotate around the axis; S3. When the feed rotates with the blade to the notch, it is released from the constraint of the shell. The blade at the highest point from the bottom in the end-feeding device is determined to have an initial velocity v. 0x Horizontally launched; the initial velocity v 0x Determined based on the blade angular velocity ω and the blade radius r; S4. After the feed is thrown, it undergoes projectile motion in the air. Determine the air resistance. Based on the air resistance, the horizontal component of the velocity, and the projectile velocity, determine the rate of change of velocity in the horizontal direction. Based on the air resistance, the vertical component of the velocity, and the projectile velocity, determine the rate of change of velocity in the vertical direction. Based on the rate of change of velocity in the horizontal direction and the rate of change of velocity in the vertical direction, determine the relationship between the horizontal position and time and the relationship between the vertical position and time, respectively. S5. When the vertical position reaches h according to the Euler method with a preset time step, if the horizontal position is less than or equal to the radius of the rearing range, then the rearing range requirement is met.

2. The method for end-point feeding according to the feeding range as described in claim 1, characterized in that: Step S4 specifically includes the following steps: S41. Calculate the windward area S of the feed based on the feed particle size d, and then calculate the feed particle size d and feed density ρ. 料 Calculate the feed mass m, and then calculate the horizontal component v of the feed's projectile motion. x The vertical component of the velocity v of the feed undergoing projectile motion y Calculate the net velocity v of the feed; S42. Based on the feed's windward area S, the feed's net velocity v, and the air density ρ 空 The air resistance F is calculated from the air resistance coefficient C. 阻 . S43, based on air resistance F 阻 The horizontal velocity component and the resultant velocity determine the horizontal rate of change of velocity, based on air resistance F. 阻 The vertical rate of change of velocity is determined by the vertical component of velocity, the resultant velocity, and the weight of the feed; the relationship between horizontal position and time is determined by the initial horizontal position, the horizontal rate of change of velocity, and time; and the relationship between vertical position and time is determined by the initial vertical position, the vertical rate of change of velocity, and time. S44. Numerical iteration is performed using the Euler method to calculate the horizontal position x and the vertical position of the spray.

3. The method for end-point feeding according to the feeding range as described in claim 1, characterized in that: The parameters of the feed in step S1 include feed particle size d and feed density ρ. 料 .

4. The method for end-point feeding according to the feeding range as described in claim 2, characterized in that: Step S3, determining the initial velocity, includes calculating the initial velocity v using the blade angular velocity ω, blade radius r, and blade rotational speed n. 0x As shown in formula (1), (1).

5. The method for achieving end-point feeding according to the feeding range as described in claim 2, characterized in that: Step S41 includes: The windward area S of the feed is calculated using the feed particle size d, as shown in formula (2). （2）； The feed mass m is determined by the feed particle size d and the feed density ρ. 料 The calculations show that, as shown in formula (3), (3); The resultant velocity v of the feed passes through the horizontal velocity component v of the feed undergoing projectile motion. x The vertical velocity component v of the feed undergoing projectile motion y The calculations show that, as shown in formula (4), (4).

6. The method for end-point feeding according to the feeding range as described in claim 2, characterized in that: Step S42 includes using the feed's windward area S, the feed's net velocity v, and the air density ρ. 空 The air resistance F is calculated from the air resistance coefficient C. 阻 As shown in formula (5), （5）。 7. The method for end-feeding according to the feeding range as described in claim 2, characterized in that: In step S43, "based on air resistance F" 阻 The rate of change of velocity level is determined by the horizontal component of velocity and the resultant velocity, as shown in formula (6). (6); F1 is the resultant force on the feed in the horizontal direction, m is the mass of the feed, v x The feed undergoes projectile motion, with the horizontal component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the frontal area of ​​the feed. In step S43, "based on air resistance F" 阻 The vertical rate of change of velocity is determined by the horizontal component of velocity and the resultant velocity, as shown in formula (7). （7）； F2 is the net force acting on the feed in the vertical direction, m is the mass of the feed, and v is the net force acting on the feed. y The feed undergoes projectile motion, with the vertical component of velocity v being the resultant velocity and ρ being the resultant velocity. 空 Where C is the air density, C is the air drag coefficient, and S is the windward area of ​​the feed.

8. The method for end-point feeding according to the feeding range as described in claim 2, characterized in that: In step S43, "determining the relationship between horizontal position and time based on the initial horizontal position and the rate of change of velocity with time, and determining the relationship between vertical position and time based on the initial vertical position and the rate of change of velocity with time" is achieved through formulas (8)-(11). （8）； （9）； （10）； （11）； t represents time, and Δt represents the preset time interval. Here is the equation relating the horizontal velocity component of a projectile motion to time. The relationship between the vertical velocity component of the feed undergoing projectile motion and time; x(t) represents the horizontal position of the feed at time t, and y(t) represents the vertical position of the feed at time t. The horizontal component of velocity versus the rate of change over time; Let be the vertical component of velocity and the rate of change over time.

9. The method for end-point feeding according to the feeding range as described in claim 1, characterized in that: The upper end of the housing is provided with a feed inlet and an upper shaft mounting port. The feed inlet is located outside the shaft mounting port. The bottom of the housing is provided with a lower shaft mounting port. The upper and lower ends of the shaft are rotatably mounted on the upper and lower shaft mounting ports. The feed inlet is divided into two or more first feed inlets by a partition. The partition extends outward from the shaft. The two or more partitions form two or more partitioned areas spaced apart along the circumference of the shaft. The partitioned areas are provided with outwardly extending blades and outwardly extending second partitions. One end of the second partition is connected to the side wall of the feed chamber. Both sides of the blade are connected to the first partition. An outlet is formed between the blade and the second partition. The outlet is connected to the feed inlet on the partitioned area.

10. A method for end-point feeding according to the feeding range as described in claim 1, characterized in that: The height of the blades in each compartment from the bottom of the housing decreases sequentially along the axial direction of the axis. The radius of the outermost edge of the blades in each compartment from the center of the axis decreases sequentially along the circumferential direction of the axis. The blades with the highest distance from the bottom of the housing have the largest radius. The housing has a circular cross-section. The size of the notch cross-section on the housing is 1 / 4 of the cross-section of the housing. The lower end of the housing has a guide surface that slopes from the top to the bottom.

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