Fertilizer applicator for pasture planting in saline-alkali soil
By designing a fertilizer for grass planting in saline-alkali land, the fertilization rack and the lifting rack are relatively sliding by means of components such as card blocks and second fixed plates, the problem of easy damage to the fertilization assembly when inserted into the soil is solved, and a longer service life and higher practicality are achieved.
Patent Information
- Application Number
- CN202510193699.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2045-02-21
AI Technical Summary
The existing fertilizers used for saline-alkali land forage planting lack protection for fertilization components when used, resulting in the fertilization components being easily corroded with substances such as stones in the soil and causing damage to the fertilization components when inserted into the soil.
A fertilizer applicator including push vehicle, fertilizer box, dual-axis motor, lift rack, fertilizer rack, clamp, discharge port, crankshaft and reset assembly is designed. Through components such as the clamp and the second fixing plate, the fertilizer rack can slide relative to the lifting rack when it comes into contact with substances such as stones to avoid hard collisions.
It effectively avoids hard collisions between fertilization racks and stones and other substances, extends the service life of fertilization racks, improves the practicality of fertilization machines, and reduces the waste of fertilizers.
Smart Images

Figure CN119790805A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of agricultural fertilizing equipment, and in particular to a fertilizing machine used for planting forage grass in saline-alkali land. Background Art
[0002] A fertilizer spreader is a piece of mechanical equipment used in agriculture and horticulture. It is mainly used to spread chemical or organic fertilizers evenly on farmland, orchards, lawns or other planting areas. The design of the fertilizer spreader aims to improve fertilization efficiency, reduce labor intensity, and ensure a more even distribution of fertilizers, thereby optimizing crop growth conditions and increasing yield and quality. The main types of fertilizer spreaders include manual, tractor-pulled, self-propelled and suspended.
[0003] When applying fertilizer to saline-alkali land using a fertilizer spreader, workers usually insert the fertilizer component into the soil intermittently and apply fertilizer to appropriately increase the fertilization depth, thereby reducing the salt concentration in the surface soil and reducing the risk of the roots of the grass seedlings directly contacting high concentrations of salt. Deep fertilization can also guide the roots of the grass seedlings to extend to deeper soil layers, which usually have lower salt content and relatively good water and nutrient conditions, which are conducive to the healthy development of the root system. However, existing fertilizer spreaders used for saline-alkali land forage cultivation lack protection for the fertilizer component during use, making it easy for the fertilizer component to collide hard with stones and other materials in the soil and become damaged when inserted into the soil.
[0004] Based on the above situation, the present invention proposes a fertilizer applicator for planting forage grass in saline-alkali land with flexible fertilization. Summary of the invention
[0005] In order to overcome the disadvantage that the existing fertilizer spreader used for planting grass in saline-alkali land lacks protection for the fertilizer component during use, which makes the fertilizer component easily collide with stones and other materials in the soil and be damaged when inserted into the soil, the present invention provides a fertilizer spreader for planting grass in saline-alkali land with flexible fertilization.
[0006] A fertilizer spreader for planting forage grass in saline-alkali land comprises a pushing cart, a fertilizer box, a double-shaft motor, a lifting frame, a fixed pipe, a hose, a fertilizer frame, a clamping block, a discharge port, a crankshaft and a reset assembly. The pushing cart is fixedly connected to the fertilizer box, the pushing cart is fixedly connected to the double-shaft motor, an output end on one side of the double-shaft motor is fixedly connected to the crankshaft, the pushing cart is slidably connected to the lifting frame, the crankshaft is movably connected to the lifting frame, the lifting frame is slidably connected to a pair of fertilizer frames through a damping ring, the fertilizer frames are provided with discharge ports equidistantly distributed around the circumference, the lifting frame is slidably connected to a pair of clamping blocks, the fertilizer frames are provided with clamping slots for inserting the clamping blocks, the fertilizer frames are squeezed and matched with the clamping blocks, the fertilizer box is fixedly connected and connected to the fixed pipe, the fixed pipe and the paired fertilizer frames are fixedly connected and connected to the hose, and a reset assembly is provided on the lifting frame.
[0007] Furthermore, the reset assembly includes a first fixed plate, a first telescopic rod and a second fixed plate, the paired first telescopic rods are fixedly connected to the lifting frame, the clamping block is fixedly connected to the first fixed plate, the telescopic end of the first telescopic rod is fixedly connected to the first fixed plate, the pushing vehicle is fixedly connected to the paired second fixed plates, and the second fixed plates are squeezed and matched with the fertilizing frame.
[0008] Furthermore, one end of the fertilization rack is conical.
[0009] Furthermore, the opening direction of the discharge port is obliquely downward.
[0010] Furthermore, it also includes an opening and closing mechanism, which is arranged on the fertilizing frame. The opening and closing mechanism includes a fixed frame, a flow discharge plate and a second telescopic rod. The second telescopic rod is fixedly connected to the fertilizing frame. The fertilizing frame is slidably connected with the flow discharge plate. The telescopic end of the second telescopic rod is fixedly connected to the flow discharge plate. The pushing vehicle is fixedly connected with a pair of fixed frames, and the fixed frames are squeezed and matched with the flow discharge plates.
[0011] Furthermore, the discharge plate is provided with discharge holes.
[0012] Furthermore, the fixing frame is provided with an inclined surface.
[0013] Furthermore, it also includes a pressurizing mechanism, which is arranged on the pushing cart. The pressurizing mechanism includes a rotating frame, an air pump, a piston frame, a third telescopic rod, an air intake valve and a one-way valve. The air pump is fixedly connected to the pushing cart, the air pump is slidably connected to the piston frame, the air pump is fixedly connected to the third telescopic rod, the telescopic end of the third telescopic rod is fixedly connected to the piston frame, the output end on the other side of the dual-axis motor is fixedly connected to the rotating frame, the rotating frame and the piston frame are squeezed together, the air pump is fixedly connected to the air intake valve, and the one-way valve is fixedly connected to and connected to the fixed pipe.
[0014] Furthermore, the invention also comprises a flow guide frame, the fertilizer box is fixedly connected with the flow guide frame, and the flow guide frame is provided with a curved surface.
[0015] The beneficial effects are as follows: 1. The present invention not only enables the fertilizer frame to be smoothly inserted into the soil and apply fertilizer under normal circumstances through components such as the clamping block and the second fixing plate, but also enables the fertilizer frame to slide relative to the lifting frame when it comes into contact with materials such as stones, thereby avoiding hard collision and damage between the fertilizer frame and materials such as stones, extending the service life of the fertilizer frame and improving the practicability of the fertilizer spreader.
[0016] 2. The present invention uses a fertilizer frame with a conical bottom end, so that the fertilizer spreader can be inserted into the soil more easily and fertilize. The discharge port located above the bottom end of the fertilizer frame and facing obliquely downward is not easily blocked by the soil when the fertilizer frame is inserted downward into the soil, and it also helps the fertilizer to be sprayed out from the discharge port under the action of its own gravity, thereby improving the practicality of the fertilizer spreader.
[0017] 3. The present invention uses components such as the discharge plate and the second telescopic rod to prevent fertilizer from flowing out of the fertilizer rack and the discharge port when the fertilizer rack is not inserted into the soil or is blocked by materials such as stones, thereby avoiding waste of fertilizer, reducing the use cost of the fertilizer spreader, and improving the practicability of the fertilizer spreader.
[0018] 4. The present invention can increase the speed of fertilizer spraying out of the discharge port through components such as the rotating frame and the piston frame, so that the fertilizer can not only better penetrate into the surrounding soil after being sprayed out from the discharge port, but also further prevent the discharge port from being blocked by soil, thereby improving the fertilization effect and practicality of the fertilizer spreader.
[0019] 5. The present invention uses a guide frame with a curved surface, which can allow the gas output by the air pump to enter the fertilizer box and stir the fertilizer when the fertilizer frame is blocked by stones and other materials and the fertilizer cannot be sprayed out from the discharge port, thereby accelerating the dissolution of solid fertilizer and avoiding the precipitation of liquid fertilizer, thereby improving the fertilization effect and practicality of the fertilizer spreader. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0021] Figure 2 It is a three-dimensional structural schematic diagram of components such as the propulsion vehicle, the fertilizer box and the dual-axis motor of the present invention.
[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the propulsion vehicle of the present invention.
[0023] Figure 4 It is a three-dimensional structural schematic diagram of the hose, fertilizer rack, clamping block and other components of the present invention.
[0024] Figure 5 It is a three-dimensional structural schematic diagram of the fertilizing frame, the clamping block and the discharge port and other components of the present invention.
[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the first fixing plate, the first telescopic rod and the second fixing plate of the present invention.
[0026] Figure 7 It is a three-dimensional structural schematic diagram of the components such as the clamping block, the first fixing plate and the first telescopic rod of the present invention.
[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing frame, the discharge plate, the second telescopic rod and other components of the present invention.
[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the fertilizing frame, the flow discharge plate and the second telescopic rod of the present invention.
[0029] Fig.10It is a schematic diagram of the three-dimensional structure of the rotating frame, the third telescopic rod, the guide frame and other components of the present invention.
[0030] Fig.11 It is a three-dimensional structural schematic diagram of the piston rack, the third telescopic rod, the intake valve and other components of the present invention.
[0031] Parts names and serial numbers in the figure: 101_push car, 102_fertilizer box, 103_double-axis motor, 104_lifting frame, 105_fixed pipe, 106_hose, 107_fertilizer frame, 108_block, 109_discharge port, 110_crankshaft, 201_first fixed plate, 202_first telescopic rod, 203_second fixed plate, 301_fixed frame, 302_discharge plate, 303_second telescopic rod, 401_rotating frame, 402_air pump, 403_piston frame, 404_third telescopic rod, 405_intake valve, 406_check valve, 501_flow guide frame. DETAILED DESCRIPTION
[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings. Example 1
[0033] A fertilizer applicator for planting grass in saline-alkali land, such as Figure 1-Figure 7 As shown, it includes a pusher 101, a fertilizer box 102, a double-axis motor 103, a lifting frame 104, a fixed pipe 105, a hose 106, a fertilizer frame 107, a block 108, a discharge port 109, a crankshaft 110 and a reset assembly. The fertilizer box 102 is fixedly connected to the top of the right side of the pusher 101, the double-axis motor 103 is fixedly connected to the middle of the pusher 101, the output end of the left side of the double-axis motor 103 is fixedly connected to the crankshaft 110, the lifting frame 104 is slidably connected to the middle of the pusher 101, the crankshaft 110 is movably connected to the lifting frame 104, and the lower part of the lifting frame 104 is slidably connected to the front and rear ends through a damping ring. The fertilizer racks 107 are symmetrically distributed, and discharge ports 109 equidistantly distributed around the circumference are provided at the bottom of the fertilizer racks 107. The lower part of the lifting rack 104 is slidably connected with blocks 108 symmetrically distributed front and back. The block 108 is provided with an inclined surface on the side close to the fertilizer rack 107. The fertilizer rack 107 is provided with a slot for inserting the adjacent block 108. The fertilizer rack 107 is squeezed and matched with the adjacent block 108. The front left side of the fertilizer box 102 is fixedly connected and communicated with a fixed pipe 105. The fixed pipe 105 is fixedly connected and communicated with the front and rear fertilizer racks 107 with a hose 106. A reset component is provided on the lifting rack 104.
[0034] like Figure 6 and Figure 7As shown, the reset assembly includes a first fixed plate 201, a first telescopic rod 202 and a second fixed plate 203. The two first telescopic rods 202 are respectively fixed to the front and rear sides of the lower part of the lifting frame 104. The first fixed plate 201 is fixed to the right side of the block 108. The telescopic end of the first telescopic rod 202 is fixed to the adjacent first fixed plate 201. The middle part of the pushing vehicle 101 is fixed with a second fixed plate 203 symmetrically distributed front and back, and the second fixed plate 203 is squeezed and matched with the adjacent fertilizer rack 107.
[0035] like Figure 4-Figure 7 As shown, the bottom end of the fertilizer rack 107 is conical.
[0036] like Figure 5 As shown, the opening direction of the discharge port 109 is obliquely downward.
[0037] like Figure 8 and Fig. 9 As shown, an opening and closing mechanism is also included, which is arranged on the fertilizing frame 107. The opening and closing mechanism includes a fixed frame 301, a flow discharge plate 302 and a second telescopic rod 303. The second telescopic rod 303 is fixedly connected to the side of the fertilizing frame 107 away from the pushing vehicle 101. The flow discharge plate 302 is slidably connected inside the fertilizing frame 107. The telescopic end of the second telescopic rod 303 is fixedly connected to the adjacent flow discharge plate 302. The middle part of the pushing vehicle 101 is fixedly connected with a fixed frame 301 symmetrically distributed front and back, and the fixed frame 301 is squeezed and matched with the adjacent flow discharge plate 302.
[0038] like Fig. 9 As shown, a discharge hole is opened in the middle of the discharge plate 302 .
[0039] like Figure 8 As shown, a slope is provided at the lower portion of the fixing frame 301 .
[0040] When workers need to fertilize the saline-alkali land for the subsequent planting of forage grass, they can first add solid fertilizer and water into the fertilizer box 102 and mix them or directly add liquid fertilizer, and then make the push cart 101 move slowly and intermittently on the saline-alkali land. During this period, the dual-axis motor 103 can be started, and the dual-axis motor 103 will drive the crankshaft 110 to rotate counterclockwise, and the counterclockwise rotation of the crankshaft 110 will drive the lifting frame 104 and other components to move up and down. When the fertilizer rack 107 moves downward with the lifting frame 104 and there are no stones or other materials in the soil below, because the bottom end of the fertilizer rack 107 is conical, there is a large friction between the fertilizer rack 107 and the lifting frame 104, and at this time the block 108 will be under the action of the first telescopic rod 202 to push the fertilizer rack 107. The frame 107 is limited, so the fertilizer frame 107 can move downward smoothly and be inserted into the soil, and at this time the discharge plate 302 and the second telescopic rod 303 will also move downward with the fertilizer frame 107, and the discharge plate 302 moves downward to contact and be squeezed with the fixed frame 301, so that the discharge plate 302 moves to the left and aligns the discharge port with the pipe of the fertilizer frame 107, and the second telescopic rod 303 is immediately compressed, and the fertilizer in the fertilizer box 102 also flows to the fertilizer frame 107 through the fixed pipe 105 and the hose 106 and finally flows out from the discharge port 109. Since the discharge port 109 is located above the bottom end of the fertilizer frame 107, the discharge port 109 is not easy to contact with the soil and be blocked when the fertilizer frame 107 moves downward and is inserted into the soil. And the opening direction of the discharge port 109 is inclined downward, so the fertilizer in the fertilizer box 102 can flow out of the discharge port 109 more easily under the action of its own gravity, so that the soil in the saline-alkali land can be fertilized. When the lifting frame 104, the fertilizer frame 107 and the discharge plate 302 and other components move upward to reset, the discharge plate 302 will be separated from the fixed frame 301 and move to the right to reset under the action of the second telescopic rod 303. At this time, the discharge port is no longer aligned with the pipe of the fertilizer frame 107, and the fertilizer will not flow out from the discharge port 109 of the fertilizer frame 107, so that waste of fertilizer can be avoided. When the fertilizer frame 107 moves downward with the lifting frame 104 and there are stones and other materials in the soil below, the fertilizer frame 107 and other components will be blocked by the stones and other materials. The lifting frame 104 and the block 108 and other components will continue to move downward, so the fertilizer frame 107 will move upward relative to the lifting frame 104 and the block 108, and the upward movement of the fertilizer frame 107 will contact and squeeze the block 108, so that the block 108 and the first fixed plate 201 move away from the fertilizer frame 107, and the first telescopic rod 202 is stretched immediately, so as to avoid the fertilizer frame 107 from hard collision with stones and other materials and damage, and because the fertilizer frame 107 fails to move downward and insert into the soil smoothly at this time, the discharge plate 302 will not move downward and contact the fixed frame 301, so the fertilizer in the fertilizer box 102 will not flow out from the discharge port 109 on the fertilizer frame 107 at this time.In this way, waste of fertilizer can be avoided. When the lifting frame 104 moves upward with the fertilizer rack 107 and other components to reset, since the fertilizer rack 107 has slid upward compared to the lifting frame 104, the fertilizer rack 107 will be blocked by the second fixing plate 203 above during the upward movement, so that compared with the lifting frame 104 and the block 108 moving downward to reset, the block 108 then moves in the opposite direction under the action of the first telescopic rod 202 to reset and insert into the slot of the fertilizer rack 107 to limit the fertilizer rack 107. Example 2
[0041] On the basis of Example 1, Fig.10 and Fig.11 As shown, a pressurizing mechanism is also included, which is arranged on the pushing vehicle 101. The pressurizing mechanism includes a rotating frame 401, an air pump 402, a piston frame 403, a third telescopic rod 404, an air intake valve 405 and a one-way valve 406. The air pump 402 is fixedly connected to the right part of the pushing vehicle 101, and the piston frame 403 is slidably connected to the rear side of the air pump 402. The third telescopic rod 404 is fixedly connected to the top of the air pump 402, and the telescopic end of the third telescopic rod 404 is fixedly connected to the piston frame 403. The output end on the right side of the dual-axis motor 103 is fixedly connected to the rotating frame 401, and the rotating frame 401 is squeezed together with the piston frame 403. The air intake valve 405 is fixedly connected to the upper front side of the air pump 402, and a one-way valve 406 is fixedly connected and connected between the air pump 402 and the fixed pipe 105.
[0042] like Figure 1 and Fig.10 As shown, a flow guide frame 501 is also included. The flow guide frame 501 is fixedly connected to the front side of the fertilizer box 102, and a curved surface is provided on the left side of the flow guide frame 501.
[0043] When the dual-axis motor 103 drives the crankshaft 110 to rotate counterclockwise and moves the lifting frame 104 and other components to the lowest point, the dual-axis motor 103 will also drive the rotating frame 401 to rotate counterclockwise until it contacts and squeezes the piston frame 403, so that the piston frame 403 moves backward to the rearmost position, and the third telescopic rod 404 is stretched immediately, and the piston frame 403 moves backward to suck the external gas into the air pump 402 through the intake valve 405. If the fertilizer rack 107 is successfully inserted into the soil at this time and the leakage hole on the leakage plate 302 is aligned with the pipe of the fertilizer rack 107, and the dual-axis motor 103 continues to drive the rotating frame 401 to rotate counterclockwise, the rotating frame 401 will separate from the piston frame 403, and the piston frame 403 will then move forward and reset under the action of the third telescopic rod 404 and inject the gas in the air pump 402 into the fixed pipe 105 through the one-way valve 406. At this time, the gas in the fixed pipe 105 will flow into the hose 106 and the fertilizer rack 107. , thereby increasing the water pressure of the fertilizer in the fixed pipe 105, the hose 106 and the fertilizer rack 107, so that the fertilizer can be sprayed out from the discharge port 109 more quickly and can better penetrate into the surrounding soil to improve the fertilization effect. If the fertilizer rack 107 is blocked by stones or other materials at this time and the drainage hole on the drainage plate 302 is not aligned with the pipeline of the fertilizer rack 107, the dual-axis motor 103 continues to drive the rotating frame 401 to rotate counterclockwise and make the air in the pump 402 If the liquid body is injected into the fixed pipe 105, the gas in the fixed pipe 105 cannot flow toward the direction of the hose 106 and the fertilizer rack 107, and will move to the right and enter the fertilizer box 102. Since the guide frame 501 is provided with a curved surface, the gas entering the fertilizer box 102 will flow counterclockwise under the guidance of the guide frame 501 and stir the fertilizer, thereby accelerating the dissolution of the solid fertilizer in the fertilizer box 102 and avoiding the precipitation of the liquid fertilizer, so as to improve the subsequent fertilization effect.
[0044] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims
1. A fertilizer applicator for planting forage grass in saline-alkali land, characterized by: The invention comprises a pushing vehicle (101), a fertilizer box (102), a double-axis motor (103), a lifting frame (104), a fixed pipe (105), a hose (106), a fertilizer frame (107), a clamping block (108), a material outlet (109), a crankshaft (110) and a reset assembly. The pushing vehicle (101) is fixedly connected to the fertilizer box (102), the pushing vehicle (101) is fixedly connected to the double-axis motor (103), an output end of one side of the double-axis motor (103) is fixedly connected to the crankshaft (110), the pushing vehicle (101) is slidably connected to the lifting frame (104), and the crankshaft (110) and the lifting frame (104) are movably connected. The lifting frame (104) is slidably connected to a pair of fertilizer frames (107) via a damping ring; the fertilizer frames (107) are provided with discharge ports (109) equidistantly distributed around the circumference; the lifting frame (104) is slidably connected to a pair of clamping blocks (108); the fertilizer frames (107) are provided with clamping slots for inserting the clamping blocks (108); the fertilizer frames (107) and the clamping blocks (108) are pressed together; the fertilizer box (102) is fixedly connected to and communicated with a fixed pipe (105); the fixed pipe (105) and the pair of fertilizer frames (107) are fixedly connected to and communicated with a hose (106); and a reset assembly is provided on the lifting frame (104).
2. A fertilizer applicator for saline-alkali land forage planting according to claim 1, characterized in that: The reset assembly comprises a first fixed plate (201), a first telescopic rod (202) and a second fixed plate (203); the paired first telescopic rods (202) are both fixedly connected to the lifting frame (104); the clamping block (108) is fixedly connected to the first fixed plate (201); the telescopic ends of the first telescopic rods (202) are fixedly connected to the first fixed plate (201); the pushing vehicle (101) is fixedly connected to the paired second fixed plates (203); and the second fixed plates (203) are extruded and matched with the fertilizer frame (107).
3. A fertilizer applicator for saline-alkali land forage planting according to claim 2, characterized in that: Among them, fertilization One end of the frame (107) is conical.
4. A fertilizer applicator for saline-alkali land forage planting according to claim 3, characterized in that: The outlet The opening direction of (109) is obliquely downward.
5. A fertilizer applicator for saline-alkali land forage planting according to claim 4, characterized in that: The invention also comprises an opening and closing mechanism, which is arranged on the fertilizing frame (107), and comprises a fixing frame (301), a flow discharge plate (302) and a second telescopic rod (303), wherein the second telescopic rod (303) is fixedly connected to the fertilizing frame (107), the fertilizing frame (107) is slidably connected to the flow discharge plate (302), the telescopic end of the second telescopic rod (303) is fixedly connected to the flow discharge plate (302), the pushing vehicle (101) is fixedly connected to a pair of fixing frames (301), and the fixing frames (301) and the flow discharge plate (302) are pressed and matched.
6. A fertilizer applicator for saline-alkali land forage planting according to claim 5, characterized in that: The discharge plate (302) is provided with a discharge hole.
7. A fertilizer applicator for saline-alkali land forage planting according to claim 6, characterized in that: The fixed frame (301) is provided with an inclined surface.
8. A fertilizer applicator for saline-alkali land forage planting according to claim 7, characterized in that: The device also includes a pressurizing mechanism, which is arranged on the pushing vehicle (101). The pressurizing mechanism includes a rotating frame (401), an air pump (402), a piston frame (403), a third telescopic rod (404), an air intake valve (405) and a one-way valve (406). The air pump (402) is fixedly connected to the pushing vehicle (101). The air pump (402) is slidably connected to the piston frame (403). The air pump (402) is fixedly connected to the third telescopic rod (404). The telescopic end of the third telescopic rod (404) is fixedly connected to the piston frame (403). The output end on the other side of the dual-axis motor (103) is fixedly connected to the rotating frame (401). The rotating frame (401) and the piston frame (403) are pressed together. The air pump (402) is fixedly connected to the air intake valve (405). The one-way valve (406) is fixedly connected and communicated between the air pump (402) and the fixed pipe (105).
9. A fertilizer applicator for saline-alkali land forage planting according to claim 8, characterized in that: It also includes a flow guide frame (501), the fertilizer box (102) is fixedly connected to the flow guide frame (501), and the flow guide frame (501) is provided with a curved surface.
Citation Information
Patent Citations
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