A peony seed soaking and screening device

Abstract

The utility model provides a kind of peony seed soaking screening device, including rack, soaking flotation box, separation component, water circulation component, spraying component, feed component;Soaking flotation box is fixedly installed above rack, and the upper front side of soaking flotation box is communicated with separation component, and the lower side of separation component is communicated with water circulation component, and the upper side of water circulation component is communicated with spraying component, and spraying component is communicated with feed component, and feed component is communicated with soaking flotation box;When working, seed enters soaking flotation box after spraying impurity removal, realizes accurate separation of full seed and unqualified seed based on density difference, and unqualified seed is discharged by separation component grading, and water flow is recycled and reused.The device realizes integrated automation operation of seed spraying impurity removal, soaking flotation and water resource reuse, significantly improves screening accuracy and seedling rate, reduces seed damage risk and labor cost, is energy-saving and environment-friendly, and meets peony large-scale seedling demand.

Description

Technical Field

[0001] This utility model belongs to the field of seed treatment technology, specifically relating to a peony seed soaking and screening device. Background Technology

[0002] Peony, as a traditional famous flower and important economic crop in my country, relies on seed propagation as the core technology for its large-scale seedling cultivation, variety expansion, and industrial promotion. The seedling survival rate directly determines the economic benefits and promotional effectiveness of peony seedling cultivation. The core influencing factor on the seedling survival rate of peony seeds is seed plumpness. Unplump seeds (such as empty or shriveled seeds, or incompletely developed seeds) are difficult to germinate normally even if they meet the sowing and germination conditions due to insufficient endosperm nutrition or embryo structural defects. Even if a few seedlings emerge, they will die early due to weak growth, seriously reducing the overall seedling survival rate and causing significant economic losses to large-scale seedling cultivation.

[0003] Currently, peony seed screening mainly relies on the traditional soaking and flotation method, but it has many technical bottlenecks: First, the screening accuracy is difficult to guarantee. Dust and other impurities attached to the seed surface can affect the actual density of the seeds, causing unripe seeds to become too heavy to float due to the weight of dust and other impurities, while plump seeds may float due to being wrapped in impurities, resulting in inaccurate separation of qualified and unqualified seeds. Second, the operation mode is inefficient and cumbersome. Traditional methods require manual completion of multiple steps such as soaking, stirring, observation, and sorting, which is labor-intensive and inefficient, and cannot meet the needs of large-scale seedling cultivation. Third, the soaking process has hidden dangers. Some hidden bad seeds (such as seeds with internal mold or necrotic embryos but intact appearance) need to be soaked for a long time or have their water changed repeatedly before they can be identified by their floating and sinking status. This not only further reduces efficiency, but may also cause qualified seeds to absorb too much water and damage the embryo due to excessive soaking time, which will affect the subsequent germination rate.

[0004] Therefore, in response to the core need that the seedling survival rate of peony seeds is strongly correlated with their plumpness, there is an urgent need to develop a special device that can accurately remove impurities from the seed surface, efficiently separate plump seeds from unqualified seeds, and optimize the soaking and flotation process. This device would solve the technical pain points of traditional methods, such as low screening accuracy, poor efficiency, high risk of seed damage, and waste of water resources, and provide technical support for the large-scale seedling cultivation of peonies. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, this utility model provides a peony seed soaking and screening device.

[0006] The technical solution adopted by this utility model is: a peony seed soaking and screening device, including a frame, and further including a soaking flotation tank, a separation component, a water circulation component, a spraying component, and a feeding component; the soaking flotation tank is fixedly installed on the top of the frame, the upper front side of the soaking flotation tank is connected to the separation component, the lower part of the separation component is connected to the water circulation component, the upper part of the water circulation component is connected to the spraying component, the spraying component is connected to the feeding component, and the feeding component is connected to the soaking flotation tank.

[0007] The immersion flotation tank is a rectangular three-dimensional structure with a chamfer on the upper left side. The feeding assembly is connected to the immersion flotation tank along the chamfered edge. A through hole is opened on the front end face of the immersion flotation tank, and the through hole is connected to a downward-opening curved pipe. A discharge port is opened on the lower end face of the immersion flotation tank.

[0008] The separation assembly includes a shell, a waste outlet, a first filter screen, and a second filter screen. The shell is a rectangular cavity structure with open upper and lower end faces and a rear end face. The outer edges of the left and right end faces near the rear end face extend to the left and right respectively to form mounting parts. The separation assembly is fixedly installed on the upper front side of the immersion flotation tank by mounting bolts on the end face of the mounting parts. The first filter screen and the second filter screen are fixedly installed in the shell from top to bottom, wherein the first filter screen is inclined towards the rear end face of the shell, and the second filter screen is inclined towards the front end face of the shell. A waste outlet is opened on the front end face of the shell, and the lower end of the waste outlet corresponds to the inclined lower end of the second filter screen. The immersion flotation tank is connected to the separation assembly through a bend pipe, and the opening of the bend pipe corresponds to the upper part of the first filter screen.

[0009] The water circulation component includes a water pump and a water storage tank. The water pump is fixedly installed on the upper left side of the water storage tank. The pipe connected to the water pump inlet is connected to the inside of the water storage tank through a through hole on the upper left side of the water storage tank. The lower part of the separation component is connected to the water circulation component through a connecting piece. The connecting piece is a hollow structure with its upper end face adapted to the lower end face of the outer shell and its lower end face adapted to the through hole on the right side of the upper end face of the water storage tank. The outer edge of the upper end face of the connecting piece is welded to the lower end of the outer shell, and the outer edge of the lower end face of the connecting piece is adapted to and connected to the through hole on the right side of the upper end face of the water storage tank.

[0010] The feeding assembly includes a hopper and a feeding channel; the bottom of the hopper is connected to the feeding channel, which has a structure with the upper and lower parts inclined in opposite directions, and the end of the lower part of the channel is connected to the immersion flotation tank along the chamfered edge of the immersion flotation tank.

[0011] The spray assembly includes a mounting plate, a water inlet pipe, a water distribution pipe, spray pipes, and nozzles. The spray assembly is connected to the water pump outlet of the water circulation assembly through the water inlet pipe. The upper part of the water inlet pipe is connected to the water distribution pipe. The water distribution pipe is arranged in an array along its circumference and connected to the spray pipes. Both ends of the spray pipes are fixedly mounted on the mounting plate, and the mounting plate is fixedly mounted on the outer end face of the upper inclined section of the feed channel. Each spray pipe is equipped with a nozzle, which extends into the feed channel through a through hole opened on the outer end face of the upper inclined section of the feed channel.

[0012] The hopper is equipped with a guide plate with protruding ridges inside, and the distance between the protruding ridges of the guide plate and the lower edge of the inlet of the feeding channel is 10-20mm.

[0013] A support column is provided between the immersion flotation tank and the hopper. The upper end of the support column is fixedly connected to the lower end of the hopper, and the lower end of the support column is fixedly connected to the right side of the upper end of the immersion flotation tank.

[0014] Two guide blocks are provided on the inner end face of the upper right side of the immersion flotation tank. The guide blocks are specifically triangular blocks, and the inclined surfaces of the two guide blocks are inclined toward the through hole opened on the front end face of the immersion flotation tank.

[0015] The discharge port is located at the center of the lower end face of the immersion flotation tank, and the inside of the immersion flotation tank is provided with a ramp that converges towards the discharge port.

[0016] Beneficial effects: 1. Precisely selects plump seeds and significantly improves seedling survival rate: The spray component pre-washes the seeds during the feeding process to remove surface dust and other impurities from the peony seeds, avoiding misjudgment caused by impurities affecting seed density. This ensures that the floating state of the seeds during soaking and flotation is entirely determined by their own plumpness. Unplump seeds naturally float to the top and are introduced into the separation component through a curved pipe, while plump seeds sink to the bottom of the box and are collected through the discharge port. This achieves precise separation of qualified and unqualified seeds, eliminating low-vitality seeds from the source and significantly improving the subsequent seedling survival rate.

[0017] 2. Optimize the soaking flotation process to reduce the risk of seed damage: The device organically combines spray pretreatment with soaking flotation. After pretreatment, the seeds can be directly separated in density after entering the soaking flotation tank without long soaking or repeated water changes. This shortens the overall processing cycle and avoids problems such as embryo damage and water absorption imbalance caused by excessive soaking of qualified seeds, thus ensuring the original vitality of the seeds.

[0018] 3. Integrated continuous operation, improving processing efficiency: The device integrates functions such as feeding, spraying, soaking, flotation, screening, water circulation, and collection. Seeds do not require manual transfer or intervention from feeding to qualified seed output, realizing continuous and automated operation and greatly reducing the intensity of manual labor.

[0019] 4. Water resource recycling, energy saving, environmental protection and cost reduction: Through the water recycling component, the water used for spraying and soaking can be used together. Specifically, the water after soaking is filtered by the separation component and then returned to the water storage tank for reuse, which greatly improves the water resource utilization rate and significantly reduces water waste. Attached Figure Description

[0020] Figure 1 This is a front view of the present utility model; Figure 2 for Figure 1 Sectional view of AA in the middle; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a cross-sectional schematic diagram of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the present utility model; Figure 6 This is a three-dimensional structural diagram of the separation component of this utility model; Figure 7 This is a schematic cross-sectional view of the separation component of this utility model; Figure 8 This is a three-dimensional structural diagram of the water circulation component of this utility model; Figure 9 This is a three-dimensional structural diagram of the spray assembly of this utility model; Figure 10 This is a three-dimensional structural diagram of the connecting component of this utility model; The diagram shows the following markings: 1. Frame; 2. Immersion flotation tank; 21. Discharge port; 22. Guide block; 3. Separation assembly; 31. Outer shell; 32. Waste discharge port; 33. First filter screen; 34. Second filter screen; 35. Mounting section; 4. Water circulation assembly; 41. Water pump; 42. Water storage tank; 5. Spray assembly; 51. Mounting plate; 52. Water inlet pipe; 53. Water distribution pipe; 54. Spray pipe; 55. Nozzle; 6. Feeding assembly; 61. Hopper; 62. Feeding channel; 63. Guide plate; 7. Bend; 8. Connecting component; 9. Support column. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-10As shown, the technical solution adopted by this utility model is: a peony seed soaking and screening device, including a frame 1, and further including a soaking flotation tank 2, a separation component 3, a water circulation component 4, a spray component 5, and a feeding component 6; the soaking flotation tank 2 is fixedly installed above the frame 1, the upper front side of the soaking flotation tank 2 is connected to the separation component 3, the lower part of the separation component 3 is connected to the water circulation component 4, the upper part of the water circulation component 4 is connected to the spray component 5, the spray component 5 is connected to the feeding component 6, and the feeding component 6 is connected to the soaking flotation tank 2; the working principle of this device is: starting the water pump 41 of the water circulation component 4, the water in the water storage tank 42 is pumped out and transported to the spray component 5, through which... After being diverted by the inlet pipe 52 and the branch pipe 53, the water is sprayed into the feed channel 62 of the feed assembly 6 by the nozzle 55 on the spray pipe 54. After being fed into the hopper 61, the peony seeds are transported along the feed channel 62 under the guidance of the guide plate 63. During this process, they are washed by the water sprayed from the nozzle 55 to remove the floating dust on the surface of the peony seeds. Then, the peony seeds enter the soaking flotation tank 2 along the feed channel 62. As the seeds are continuously fed and the spray water is continuously injected, the water level in the soaking flotation tank 2 gradually rises and exceeds the through hole on the front end face, forming a stable overflow flow. Based on the density difference, the plump and qualified seeds sink because their density is greater than that of the soaking liquid. They are guided by the slope around the soaking flotation tank 2 to converge. Collected at the lower end outlet 21, empty, shriveled, and underdeveloped seeds float on the surface. Guided by the inclined surface of the triangular guide block 22 inside the soaking flotation tank 2, they flow with the overflow water through the through-hole and bend 7 into the separation component 3. The overflow water and the unqualified seeds slide down the backward-inclined first filter screen 33. The water flows downward through the filter screen, while the unqualified seeds slide along the inclined angle of the first filter screen 33 to the forward-inclined second filter screen 34. Subsequent unqualified seeds are then discharged through the waste outlet 32 ​​along the inclined angle of the second filter screen 34. The water continues to flow downward and returns to the water storage tank 42 through the connecting piece 8, realizing a closed loop of water resources. The process is repeated until the integrated treatment of peony seeds—spraying to remove impurities, soaking and flotation, and water reuse—is completed. Water is added in at least two ways: first, water is added directly from the hopper 61, filling the soaking and flotation tank 2 via the feed channel 62, and then overflowing to fill the storage tank 42; second, an inlet is provided on the storage tank 42, and water is added from the inlet. The water pump 41 is then turned on, and the water from the storage tank 42 is diverted through the inlet pipe 52 and the distribution pipe 53, then sprayed from the nozzle 55 on the spray pipe 54 into the feed channel 62 of the feed assembly 6. The water then flows into the soaking and flotation tank 2 until it overflows at the through-hole on the front end face of the soaking and flotation tank 2.

[0023] The immersion flotation tank 2 is a rectangular three-dimensional structure with a chamfer on the upper left side. The feeding component 6 is connected to the immersion flotation tank 2 along the chamfered edge. A through-hole is opened on the front end face of the immersion flotation tank 2, which is connected to a downward-opening bent pipe 7. A discharge port 21 is opened on the lower end face of the immersion flotation tank 2. In this configuration, the chamfer on the upper left side of the immersion flotation tank 2 forms an inclined surface on the upper left side. The function is to guide the floating unqualified seeds to converge from the lower to the upper right side of the tank along the inclined surface. This prevents the unqualified seeds from being trapped in the immersion flotation tank 2 due to the right-angle structure. The through-hole on the front end face of the immersion flotation tank 2 cooperates with the downward-opening bent pipe 7 to limit the stable overflow water level through the through-hole, providing a channel for the unqualified seeds to overflow with the water flow. At the same time, the bent pipe 7 guides the overflow water flow and unqualified seeds to the separation component 3.

[0024] The separation component 3 includes a housing 31, a waste outlet 32, a first filter screen 33, and a second filter screen 34. The housing 31 is a rectangular cavity structure with open upper and lower end faces and a rear end face. The outer edges of its left and right end faces near the rear end face extend to the left and right respectively to form mounting parts 35. The separation component 3 is fixedly installed on the upper front side of the immersion flotation tank 2 by mounting bolts on the end face of the mounting parts 35. The first filter screen 33 and the second filter screen 34 are fixedly arranged from top to bottom inside the housing 31, wherein the first filter screen 33 is inclined towards the rear end face of the housing 31, and the second filter screen 34 is inclined towards the front end face of the housing 31. The front end face of the shell 31 is provided with a waste discharge port 32, the lower end of which corresponds to the inclined lower end of the second filter screen 34; the immersion flotation tank 2 is connected to the separation component 3 through the bent pipe 7, and the opening of the bent pipe 7 corresponds to the upper part of the first filter screen 33; in this arrangement, the function of the first filter screen 33 and the second filter screen 34 is to separate the water flow overflowing from the through hole on the front end face of the immersion flotation tank 2 from the unqualified seeds. The water flow enters the water storage tank 42 for recycling through the filter screen through hole, and the unqualified seeds fall onto the second filter screen 34 after passing through the inclined surface of the first filter screen 33, and roll along the inclined surface of the second filter screen 34 to the waste discharge port 32 for discharge.

[0025] Both the first filter screen 33 and the second filter screen 34 are equipped with filter cotton on their upper surfaces. The filter cotton can filter water quality and purify circulating water.

[0026] The water circulation component 4 includes a water pump 41 and a water storage tank 42. The water pump 41 is fixedly installed on the upper left side of the water storage tank 42. The pipe connected to the water inlet of the water pump 41 is connected to the inside of the water storage tank 42 through a through hole on the upper left side of the water storage tank 42. The lower part of the separation component 3 is connected to the water circulation component 4 through a connecting piece 8. The connecting piece 8 is a hollow structure with its upper end face adapted to the lower end face of the outer shell 31 and its lower end face adapted to the through hole on the right side of the upper end face of the water storage tank 42. The outer edge of the upper end face of the connecting piece 8 is welded to the lower end of the outer shell 31, and the outer edge of the lower end face of the connecting piece 8 is adapted to the through hole on the right side of the upper end face of the water storage tank 42. Connectivity; This setup is designed to create a closed-loop water circulation system, enabling water resource recycling and fluid connectivity between components: Pump 41 draws water from the storage tank 42 to supply the spray assembly 5, and the water separated by the separation assembly 3 flows back to the storage tank 42 via the connecting piece 8, forming a circulation path. This ensures a continuous water supply for spraying and flotation while reducing water waste. Pump 41 is specifically a centrifugal clean water pump, providing stable and gentle water supply. Its flow rate and head are adapted to the needs of the spray assembly 5 and the water circulation assembly 4 in this device, preventing high-pressure water flow from damaging the seeds and ensuring the effectiveness of spraying for impurity removal and flotation.

[0027] The feeding assembly 6 includes a hopper 61 and a feeding channel 62. The lower part of the hopper 61 is connected to the feeding channel 62. The feeding channel 62 has an upper and lower part that are inclined in opposite directions. The lower part of the channel is connected to the immersion flotation tank 2 along the chamfered edge of the immersion flotation tank 2. In this configuration, the upper inclined structure of the feeding channel 62 provides an installation and passage space for cleaning peony seeds. The spray assembly 5 is installed on the outer end face of the upper inclined structure of the feeding channel 62. When the peony seeds pass through the upper inclined structure of the feeding channel 62, they are sprayed by the spray assembly 5. The lower inclined structure of the feeding channel 62 can be connected to the immersion flotation tank 2 by welding. The upper inclined section guides the seeds to slide down naturally, slowing down the conveying speed and ensuring that the peony seeds can be sprayed evenly by the spray assembly 5. The lower inclined structure prevents local accumulation at the edges when the seeds enter the immersion flotation tank 2, ensuring that the overall process is continuous and efficient.

[0028] The spray assembly 5 includes a mounting plate 51, a water inlet pipe 52, a water distribution pipe 53, spray pipes 54, and nozzles 55. The spray assembly 5 is connected to the outlet of the water pump 41 of the water circulation assembly 4 through the water inlet pipe 52. The upper part of the water inlet pipe 52 is connected to the water distribution pipe 53. The water distribution pipe 53 is circumferentially arrayed along its axial direction and connected to the spray pipes 54. Both ends of the spray pipes 54 are fixedly mounted on the mounting plate 51, which is fixedly mounted on the outer end face of the upper inclined section of the feed channel 62. Each spray pipe 54 is provided with a nozzle 55, which extends into the feed channel 62 through a through hole opened on the outer end face of the upper inclined section of the feed channel 62. This arrangement is achieved by setting spray pipes 54. The spraying component 5 achieves uniform impurity removal pretreatment during seed transportation, specifically as follows: Water pumped by water pump 41 enters water distribution pipe 53 through water inlet pipe 52. Water distribution pipe 53 achieves uniform water flow through a circumferentially axially arrayed spray nozzle 54. Mounting plate 51 firmly fixes the spray nozzle 54 to the outside of the upper inclined section of feed channel 62 to ensure structural stability. Spray nozzle 55 extending into the feed channel 62 is aimed at the seeds being transported, forming a multi-directional, full-coverage spraying area. Combined with the downward slide of the seeds in the inclined channel, this ensures that the peony seeds entering the feed channel 62 can fully contact the water flow, washing away floating dust and impurities on the surface of the peony seeds, laying the foundation for subsequent precise flotation.

[0029] The hopper 61 is equipped with a guide plate 63 with protruding ridges. The distance between the protruding ridges of the guide plate 63 and the lower edge of the inlet of the feed channel 62 is 10-20mm. This setting can guide the feeding of peony seeds. In addition, considering the conventional particle size of peony seeds (5-10mm), setting the distance between the protruding ridges of the guide plate 63 and the lower edge of the inlet of the feed channel 62 to 10-20mm is both greater than the maximum particle size of a single seed, ensuring that the seeds can smoothly enter the feed channel 62, and forming a controllable feeding channel through the spacing limit, avoiding a large influx of seeds at once, preventing seed accumulation and blockage in the feed channel 62, and ensuring that each seed can fully contact the spray water flow during the conveying process, ensuring that surface dust and impurities are thoroughly washed away, thus ensuring the accuracy of subsequent flotation.

[0030] A support column 9 is provided between the immersion flotation tank 2 and the hopper 61. The upper end face of the support column 9 is fixedly connected to the lower end face of the hopper 61, and the lower end face of the support column 9 is fixedly connected to the right side of the upper end face of the immersion flotation tank 2. This setting is to provide stable support for the hopper 61 and prevent the hopper 61 from shaking or shifting due to uneven force when seeds are added in batches or during spraying operations.

[0031] Two guide blocks 22 are provided on the inner end face of the upper right side of the immersion flotation tank 2. The guide blocks 22 are specifically triangular blocks, and the inclined surfaces of the two guide blocks 22 are inclined towards the through hole opened on the front end face of the immersion flotation tank 2. In this configuration, the guide blocks 22 directionally gather the floating matter, ensuring the accuracy and smoothness of flotation separation. The inclined surfaces of the guide blocks 22 are inclined towards the through hole on the front side of the immersion flotation tank 2, which can guide the unqualified seeds and light impurities floating in the tank, preventing the floating matter from being dispersed and stagnant on the upper part of the tank. This ensures that when the water overflows, the water flow can carry away the unqualified peony seeds that have floated.

[0032] The discharge port 21 is located at the center of the lower end face of the immersion flotation tank 2. The immersion flotation tank 2 has a ramp around its interior that converges towards the discharge port 21. Its function is to guide qualified seeds to be collected efficiently and in a concentrated manner. After flotation is completed, qualified seeds can be discharged quickly and efficiently from the discharge port 21 located at the center of the lower end face of the immersion flotation tank 2.

Claims

1. A peony seed soaking and screening device, comprising a frame, characterized in that: The system includes an immersion flotation tank, a separation assembly, a water circulation assembly, a spray assembly, and a feeding assembly. The immersion flotation tank is fixedly installed above the frame. The upper front side of the immersion flotation tank is connected to the separation assembly, the lower part of the separation assembly is connected to the water circulation assembly, the upper part of the water circulation assembly is connected to the spray assembly, the spray assembly is connected to the feeding assembly, and the feeding assembly is connected to the immersion flotation tank. The water circulation assembly includes a water pump and a water tank. The water pump is fixedly installed on the upper left side of the water tank. The pipe connected to the water pump inlet is connected to the inside of the water tank through a through hole on the left side of the upper surface of the water tank. The lower part of the separation assembly is connected to the water circulation assembly through a connecting piece. The connecting piece is a hollow structure with its upper surface adapted to the lower surface of the outer shell and its lower surface adapted to the through hole on the right side of the upper surface of the water tank. The outer edge of the upper surface of the connecting piece is welded to the lower end of the outer shell, and the outer edge of the lower surface of the connecting piece is adapted to and connected to the through hole on the right side of the upper surface of the water tank.

2. The peony seed soaking and screening device according to claim 1, characterized in that: The immersion flotation box is a rectangular three-dimensional structure with a chamfer on the upper left side. The feeding assembly is connected to the immersion flotation box along the chamfered edge. A through hole is opened on the front end face of the immersion flotation box, which is connected to a downward-opening curved pipe. A discharge port is opened on the lower end face of the immersion flotation box.

3. The peony seed soaking and screening device according to claim 2, characterized in that: The separation assembly includes a housing, a waste outlet, a first filter screen, and a second filter screen. The housing is a rectangular cavity structure with open upper and lower end faces and a rear end face. The outer edges of the left and right end faces near the rear end face extend to the left and right respectively to form mounting parts. The separation assembly is fixedly installed on the upper front side of the immersion flotation tank by mounting bolts on the end face of the mounting parts. The first filter screen and the second filter screen are fixedly installed in the housing from top to bottom, wherein the first filter screen is inclined towards the rear end face of the housing, and the second filter screen is inclined towards the front end face of the housing. A waste outlet is opened on the front end face of the housing, and the lower end of the waste outlet corresponds to the inclined lower end of the second filter screen. The immersion flotation tank is connected to the separation assembly through a bent pipe, and the opening of the bent pipe corresponds to the upper part of the first filter screen.

4. The peony seed soaking and screening device according to claim 3, characterized in that: The feeding assembly includes a hopper and a feeding channel; the bottom of the hopper is connected to the feeding channel, which has a structure with the upper and lower parts inclined in opposite directions, and the end of the lower part of the channel is connected to the immersion flotation tank along the chamfered edge of the immersion flotation tank.

5. The peony seed soaking and screening device according to claim 4, characterized in that: The spray assembly includes a mounting plate, a water inlet pipe, a water distribution pipe, spray pipes, and nozzles. The spray assembly is connected to the water pump outlet of the water circulation assembly through the water inlet pipe. The upper part of the water inlet pipe is connected to the water distribution pipe. The water distribution pipe is arranged in an array along its circumference and connected to the spray pipes. The two ends of the spray pipes are fixedly mounted on the mounting plate, which is fixedly mounted on the outer end face of the upper inclined section of the feed channel. Each spray pipe is equipped with a nozzle, which extends into the feed channel through a through hole opened on the outer end face of the upper inclined section of the feed channel.

6. The peony seed soaking and screening device according to claim 4, characterized in that: The hopper is equipped with a guide plate with raised ridges. The distance between the raised ridges of the guide plate and the lower edge of the inlet of the feeding channel is 10-20mm.

7. The peony seed soaking and screening device according to claim 4, characterized in that: A support column is provided between the immersion flotation tank and the hopper. The upper end of the support column is fixedly connected to the lower end of the hopper, and the lower end of the support column is fixedly connected to the right side of the upper end of the immersion flotation tank.

8. The peony seed soaking and screening device according to claim 2, characterized in that: Two guide blocks are provided on the inner end face of the upper right side of the immersion flotation tank. The guide blocks are triangular blocks, and the inclined surfaces of the two guide blocks are inclined towards the through hole opened on the front end face of the immersion flotation tank.

9. The peony seed soaking and screening device according to claim 2, characterized in that: The discharge port is located at the center of the lower end face of the immersion flotation tank, and the inside of the immersion flotation tank is provided with a ramp that converges towards the discharge port.

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