A phosphorus fertilizer packaging scale convenient to clean

CN224921277UActive Publication Date: 2026-10-30JINGMEN ZHONGHONG ELECTROMECHANICAL CO LTD
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Patent Information

Application Number
CN202522658357.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-16
Publication Date
2026-10-30
Estimated Expiration
2035-12-16

AI Technical Summary

Technical Problem

[0004]为了克服现有的磷肥包装秤无专用纯机械清洗辅助设计的问题,本实用新型提供了一种便于清洗的磷肥包装秤

Benefits of technology

该便于清洗的磷肥包装秤,料斗通过快速卡扣与机架连接,可整体拆下进行深度清洗,避免固定结构导致的清洗死角,手动驱动刮料环沿料斗内壁滑动,弹性刮片贴合壁面刮除结块残留,无需依赖电力,操作便捷,环形分布的喷淋头均匀冲洗料斗内壁,倾斜导流槽引导污水向排渣口汇聚,快速排出清洗废水与残留杂质,进水接头与软管可拆卸连接,方便接入水源,梯形密封垫与防漏挡圈防止清洗时污水渗漏,保护称量组件,支撑螺杆与调节旋钮配合,可微调料斗水平度,确保下料与清洗时物料、污水流动顺畅,提升使用稳定性。

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Abstract

The utility model relates to phosphatic fertilizer packaging scale technical field, concretely to a phosphatic fertilizer packaging scale convenient to wash, including frame, weighing table, detachable hopper, prevent residual material scraping subassembly, cleaning flow guide subassembly, quick -witted connection subassembly, sealed leakage prevention subassembly, hopper support adjusting subassembly, hopper is connected with the frame through quick buckle, can integrally dismantle and carry out depth cleaning, avoid the dead angle of cleaning caused by fixed structure, manual drive scraping ring slides along the inner wall of hopper, and the elastic scraper is attached wall surface and is scraped to remove the agglomerate residue, need not rely on electric power, convenient operation, annular distribution's shower head even washes the inner wall of hopper, and the inclined flow guide groove guides sewage to converge to the residue discharge port, and the quick discharge cleaning wastewater and residual impurity, the water inlet joint is detachably connected with the hose, and the water source is conveniently connected, the trapezoidal sealing washer and the leakage prevention baffle prevent sewage leakage when cleaning, protect weighing assembly, and the supporting screw is cooperated with the adjusting knob, and the hopper levelness can be fine tuned.
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Description

Technical Field

[0001] This utility model relates to the technical field of phosphate fertilizer packaging scales, specifically a phosphate fertilizer packaging scale that is easy to clean. Background Technology

[0002] As is well known, this utility model is specifically applied to quantitative packaging scenarios of phosphate fertilizers in the fields of chemical industry and agriculture.

[0003] The key contact components of existing phosphate fertilizer packaging scales, such as the hopper and discharge channel, are mostly fixed welded structures, and there is no dedicated purely mechanical cleaning auxiliary design. The hygroscopic and easily clumped characteristics of phosphate fertilizer make it difficult to remove residual phosphate fertilizer after it adheres to the inner wall of the components. Long-term accumulation not only affects the subsequent weighing accuracy, but also contaminates new materials due to residual deterioration. Summary of the Invention

[0004] To overcome the problem that existing phosphate fertilizer packaging scales lack dedicated purely mechanical cleaning assistance, this utility model provides a phosphate fertilizer packaging scale that is easy to clean.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a phosphate fertilizer packaging scale that is easy to clean, comprising: frame; Weighing platform, which is located in the middle of the frame and is elastically connected to the frame; A detachable hopper is located above the weighing platform, with a discharge port at the bottom of the hopper. The hopper is detachably connected to the top of the frame via a quick-release buckle. An anti-residue scraping assembly includes a scraping ring, a drive rod, and a handle. The scraping ring is located inside the hopper and fits against the inner wall of the hopper. The drive rod passes through the top of the hopper and is fixedly connected to the scraping ring. The handle is fixed to the top of the drive rod. A cleaning and guiding assembly is disposed on the hopper; A quick-connect component is disposed on the hopper; A sealing and leak-proof assembly, wherein the sealing and leak-proof assembly is disposed on the frame; and A hopper support adjustment assembly is located on the top of the frame.

[0006] Preferably, the detachable hopper is made of stainless steel, with the inner wall polished into a smooth curved surface, and a transparent observation window is provided on the side wall of the hopper.

[0007] Furthermore, the outer side of the scraper ring is provided with an elastic scraper made of polyurethane material, which is interference-fitted with the inner wall of the hopper, and the drive rod is rotatably connected to the top of the hopper through a bearing.

[0008] Furthermore, the cleaning and guiding assembly includes spray heads, a guiding channel, and a slag discharge port. The spray heads are evenly distributed on the inner side of the top of the hopper, the guiding channel is arranged around the discharge port, and the slag discharge port is opened at the lowest end of the guiding channel. The spray heads are evenly distributed along the circumference of the top of the hopper.

[0009] In a further embodiment, the spray head sprays water towards the inner wall of the hopper, the spray head is a detachable structure, the guide channel is an annular inclined structure, the inner wall of the guide channel is provided with a wear-resistant coating, and a detachable plug is provided at the slag discharge port.

[0010] Based on the aforementioned solution, the quick connection assembly includes a water inlet connector and a hose. The water inlet connector is fixed to the outside of the hopper and communicates with the spray head. One end of the hose is detachably connected to the water inlet connector, and the other end is used to connect to a water source.

[0011] Furthermore, based on the aforementioned solution, the sealing and leak-proof assembly includes a sealing gasket and a leak-proof retaining ring. The sealing gasket is located at the contact point between the hopper and the frame, and the leak-proof retaining ring is fixed to the edge of the guide channel. The sealing gasket is made of rubber and has a trapezoidal cross-section. The sealing gasket is bonded and fixed to the bottom of the hopper, and the leak-proof retaining ring is an annular protrusion integrally formed with the guide channel.

[0012] Furthermore, based on the aforementioned solution, the hopper support adjustment assembly includes a support screw and an adjustment knob. The support screw is fixed to the bottom of the frame, and the adjustment knob is threadedly connected to the support screw. The top end of the knob abuts against the bottom of the hopper, and the support screw is respectively located at the four corners of the bottom of the hopper.

[0013] Beneficial effects This easy-to-clean phosphate fertilizer packaging scale features a hopper that connects to the frame via a quick-release clip, allowing for complete disassembly and deep cleaning. This avoids cleaning dead zones caused by fixed structures. A manually driven scraper ring slides along the inner wall of the hopper, while elastic scrapers adhere to the wall surface to remove clumps and residue. It requires no electricity and is easy to operate. A ring of spray nozzles evenly washes the inner wall of the hopper, and an inclined guide channel directs wastewater towards the discharge port for rapid removal of cleaning wastewater and residual impurities. The water inlet connector and hose are detachable for easy access to a water source. A trapezoidal sealing gasket and leak-proof ring prevent wastewater leakage during cleaning, protecting the weighing components. A support screw and adjustment knob work together to fine-tune the hopper's level, ensuring smooth flow of materials and wastewater during feeding and cleaning, thus improving operational stability. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the hopper support adjustment assembly of this utility model; Figure 3 This is a schematic diagram of the scraping assembly of this utility model; Figure 4This is a schematic diagram of the cleaning and flow guiding component of this utility model; Figure 5 This utility model Figure 4 A schematic diagram of the cross-sectional structure at point AA.

[0015] In the diagram: 1. Frame; 2. Weighing platform; 3. Hopper; 4. Discharge port; 5. Anti-residue scraping assembly; 6. Scraper ring; 7. Drive rod; 8. Handle; 9. Cleaning guide assembly; 10. Quick connection assembly; 11. Sealing and leak-proof assembly; 12. Hopper support and adjustment assembly; 13. Observation window; 14. Elastic scraper; 15. Spray head; 16. Guide channel; 17. Slag discharge port; 18. Plug; 19. Water inlet connector; 20. Hose; 21. Sealing gasket; 22. Leak-proof retaining ring; 23. Support screw; 24. Adjustment knob. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] See Figures 1-5 A phosphate fertilizer packaging scale that is easy to clean is disclosed. The frame 1 serves as the basic support of the device, with a weighing platform 2 in the middle that is elastically connected. The top of the scale can be detachably installed with a hopper 3 via a quick-release buckle. The hopper 3 is equipped with an anti-residue scraping component 5, a cleaning guide component 9, and a quick-connect component 10. The frame 1 is equipped with a sealing and leak-proof component 11, and the bottom is equipped with a hopper support and adjustment component 12. The hopper 3 can be detached for deep cleaning. The scraping component is manually driven to scrape off the residue on the inner wall. The cleaning guide component 9 uses a spray head 15 for rinsing, a guide channel 16 for guiding, and a slag discharge port 17 for sewage discharge. The quick-connect component 10 allows for easy connection to a water source. The sealing and leak-proof component 11 prevents leakage of cleaning wastewater. The support and adjustment component ensures that the hopper 3 is level. Through the synergy of detachable cleaning, mechanical scraping, spray guidance, and sealing protection, the scale solves the problems of traditional packaging scales lacking dedicated cleaning design and having difficulty in removing residue. It enables rapid cleaning after phosphate fertilizer packaging, avoids residual deterioration and contamination, ensures weighing accuracy, and is suitable for the quantitative packaging needs of phosphate fertilizer in the chemical and agricultural fields.

[0018] First, refer to Figure 1In this embodiment, the frame 1 is a frame structure with strong overall rigidity, which can stably support the weighing platform 2, the hopper 3 and all auxiliary components. It will not deform even if it bears the weight of the hopper 3 and weighing vibration for a long time, providing a stable foundation for packaging and cleaning operations. The top of the frame 1 provides an installation benchmark for the hopper 3, and the bottom support adjustment component can finely adjust the height to ensure that the hopper 3 is level. The bottom has reserved space to facilitate the flexible connection and maintenance of the weighing platform 2.

[0019] Weighing platform 2 is located in the middle of frame 1 and is flexibly connected to frame 1. It can accurately sense the weight of phosphate fertilizer and realize quantitative packaging. The flexible connection design not only ensures weighing accuracy, but also buffers the impact force when phosphate fertilizer is fed, avoiding vibration from affecting weighing accuracy. The position of weighing platform 2 is precisely aligned with the discharge port 4 of hopper 3, ensuring that phosphate fertilizer falls smoothly into the packaging container without spillage or waste.

[0020] Then, refer to Figure 2 In this embodiment, the hopper 3 is located above the weighing platform 2, and the bottom is provided with a discharge port 4. It is detachably connected to the top of the frame 1 by a quick snap fastener. It is the core carrier for storing and discharging phosphate fertilizer. The inner wall of the hopper 3 is smooth, which can reduce the adhesion of phosphate fertilizer residue. The side wall is provided with a transparent observation window 13, which makes it convenient for operators to check the remaining amount of phosphate fertilizer in the hopper 3 and the discharging situation in real time. The operation status can be grasped without disassembly.

[0021] The detachable design of hopper 3 is the key to achieving deep cleaning. By releasing the quick-release buckle, hopper 3 can be removed from frame 1, which makes it easy to thoroughly clean the inside of hopper 3, discharge port 4 and other dead corners, avoiding cleaning blind spots caused by fixed structure. The removed hopper 3 can be rinsed and wiped separately to thoroughly remove residual phosphate fertilizer and prevent caking, deterioration and contamination of subsequent materials.

[0022] Secondly, see Figure 3 In this embodiment, the anti-residue scraping component 5 is installed on the hopper 3. It can be manually driven to scrape off the residual phosphate fertilizer on the inner wall. It includes a scraping ring 6, a drive rod 7 and a handle 8. The scraping ring 6 is located inside the hopper 3 and has an elastic scraper 14 on the outside. It can fit tightly against the inner wall of the hopper 3. The interference fit design ensures that there is no gap between the scraper and the wall. When rotating, it can thoroughly scrape off the attached residual phosphate fertilizer and clumps of material, avoiding residue accumulation.

[0023] The drive rod 7 passes through the top of the hopper 3 and is fixedly connected to the scraper ring 6. The handle 8 is fixed at the top. The drive rod 7 and the top of the hopper 3 rotate smoothly without jamming. When the operator turns the handle 8, the drive rod 7 and the scraper ring 6 can rotate synchronously. The manual operation does not rely on electricity, which is convenient and efficient and suitable for scenarios without power or outdoor operation.

[0024] See again Figure 3In this embodiment, the cleaning and guiding component 9 is installed on the hopper 3. Through spray rinsing and guiding sewage discharge, the inner wall of the hopper 3 is thoroughly cleaned. It includes a spray head 15, a guiding channel 16 and a slag discharge port 17. The spray head 15 is evenly distributed around the top of the hopper 3, and the water spray direction is towards the inner wall of the hopper 3, which can cover the inner wall of the hopper 3 in all directions. The sprayed water impacts the wall surface, and the residue scraped off by the scraping component achieves thorough rinsing. The spray head 15 is a detachable structure, which is convenient for disassembly and cleaning of blockages, ensuring smooth water discharge.

[0025] The guide channel 16 is arranged around the discharge port 4 in a ring-shaped inclined structure, which can guide the flushed sewage and impurities to converge towards the slag discharge port 17, avoiding the accumulation of sewage at the bottom of the hopper 3. The inner wall of the guide channel 16 is smooth, reducing the residue of sewage and impurities, and the wear-resistant design extends the service life.

[0026] The slag discharge port 17 is located at the lowest end of the guide channel 16, which facilitates the centralized discharge of sewage and impurities. A detachable plug 18 is provided at the slag discharge port 17. When weighing and packaging, the plug 18 is closed to prevent phosphate fertilizer leakage. When cleaning, the plug 18 is opened to discharge sewage and residue. The operation is simple.

[0027] In addition, see Figure 3 In this embodiment, the quick-connect component 10 is located on the outside of the hopper 3 for easy access to the cleaning water source. It includes a water inlet connector 19 and a hose 20. The water inlet connector 19 is fixed on the outside of the hopper 3 and communicates with the spray head 15. One end of the hose 20 is detachably connected to the water inlet connector 19, and the other end is connected to the water source. The water source can be disconnected by removing the hose 20 without affecting the weighing operation of the hopper 3. After connection, it can quickly supply water to the spray head 15 without complicated pipeline connection, thus improving the convenience of cleaning.

[0028] The detachable design of the hose 20 also facilitates individual cleaning and replacement, preventing residual sewage in the pipeline from deteriorating, ensuring the cleanliness of the cleaning water source, and preventing secondary pollution of the hopper 3.

[0029] In addition, see Figure 5 In this embodiment, the sealing and leak-proof component 11 is located at the joint between the frame 1 and the hopper 3 to prevent phosphate fertilizer leakage during weighing and sewage leakage during cleaning. It includes a sealing gasket 21 and a leak-proof retaining ring 22. The sealing gasket 21 is located at the joint between the hopper 3 and the frame 1 and can fill the gap between the two to prevent phosphate fertilizer from leaking from the gap during weighing. At the same time, it prevents sewage from seeping into the interior of the frame 1 during cleaning and protects the weighing platform 2 and other components from corrosion.

[0030] The anti-leakage ring 22 is fixed to the edge of the guide channel 16 and is a ring-shaped protrusion. It can prevent sewage from splashing to the outside of the hopper 3 during flushing and guide the sewage into the guide channel 16, further improving the anti-leakage effect and keeping the surrounding environment of the equipment clean.

[0031] Finally, see Figure 2In this embodiment, the hopper support adjustment assembly 12 is located at the bottom of the frame 1 to ensure that the hopper 3 is level. It includes a support screw 23 and an adjustment knob 24. The support screw 23 is located at the four corners of the bottom of the hopper 3. The adjustment knob 24 is threadedly connected to the support screw 23, and its top end abuts against the bottom of the hopper 3. By rotating the adjustment knob 24, the height of the support screw 23 can be finely adjusted, thereby adjusting the level of the hopper 3. This ensures that the phosphate fertilizer falls evenly and is weighed accurately when the material is discharged. During cleaning, it ensures that the wastewater flows smoothly along the guide channel 16 to the slag discharge port 17 without any water accumulation.

[0032] Working principle: When using this easy-to-clean phosphate fertilizer packaging scale, first check whether the connections of each component are secure. The frame 1 and the weighing platform 2 are properly and elastically connected without looseness. The hopper 3 is securely fixed by the quick-release buckle. The transparent observation window 13 is undamaged. The drive rod 7 of the scraper assembly rotates smoothly. The scraper ring 6 fits tightly against the inner wall of the hopper 3. The spray head 15 is not blocked. The guide channel 16 is smooth and free of debris. The slag discharge port 17 and the plug 18 are well sealed. The water inlet connector 19 of the quick-connect assembly 10 is securely connected to the hose 20 without leakage. The sealing gasket 21 and the anti-leakage retaining ring 22 are intact and undamaged. The screw and knob of the support adjustment assembly fit smoothly without jamming.

[0033] Clean the inside of hopper 3, discharge port 4, and guide channel 16 to remove residual phosphate fertilizer and impurities to ensure no accumulation. Wipe the surface of weighing platform 2 to remove dust and stains to avoid affecting weighing accuracy. Check whether the plug 18 of slag discharge port 17 is tightened to prevent leakage during weighing.

[0034] Rotate the adjustment knob 24 at the bottom of the frame 1 and finely adjust the height of the hopper 3 through the support screw 23 to ensure that the hopper 3 is level. Observe the level mark inside the hopper 3 or use a level to check until the hopper 3 is completely level, so as to ensure smooth flow of materials and sewage during feeding and cleaning.

[0035] Add phosphate fertilizer to the detachable hopper 3, check the remaining amount of phosphate fertilizer in the hopper 3 through the transparent observation window 13 to ensure that the packaging requirements are met, adjust the quantitative parameters of the weighing platform 2, and set the required packaging weight.

[0036] Open the discharge port 4 switch at the bottom of hopper 3, and the phosphate fertilizer falls into the packaging container of weighing platform 2 under gravity. Weighing platform 2 senses the weight in real time. When the preset weight is reached, the discharge port 4 switch is closed to complete the single quantitative packaging.

[0037] Repeat the feeding and unloading steps to carry out continuous packaging operations. During the process, the remaining amount in the hopper 3 is monitored in real time through the observation window 13. Phosphate fertilizer is replenished in time, and the sealing gasket 21 and the leak-proof ring 22 are checked regularly to prevent phosphate fertilizer leakage.

[0038] After the packaging operation is completed, close the plug 18 of the discharge port 4, turn the handle 8 of the scraping assembly, drive the drive rod 7 and the scraping ring 6 to rotate along the inner wall of the hopper 3, and the elastic scraper 14 scrapes off the attached residual phosphate fertilizer and clumps of material. The scraped material is concentrated at the bottom of the hopper 3.

[0039] Connect the hose 20 of the quick-connect component 10 to the water source, turn on the water source switch, and the spray head 15 sprays water onto the inner wall of the hopper 3 to rinse the wall surface and the residue scraped off by the scraper ring 6 in all directions. After the water flow impacts, the sewage and impurities flow into the guide channel 16.

[0040] Open the detachable plug 18 of the slag discharge port 17. The sewage and impurities in the guide channel 16 are discharged through the slag discharge port 17. After the sewage is discharged, turn off the water source and rotate the scraper ring 6 again to scrape off the residual moisture and a small amount of impurities on the wall surface.

[0041] If there is a lot of residue, loosen the quick-release buckle, remove the hopper 3, and thoroughly wipe and rinse the inside of the hopper 3, the discharge port 4, and the guide channel 16 separately to ensure that there are no dead corners in the cleaning. After cleaning, let it dry for later use.

[0042] After cleaning, tighten the plug 18 at the slag discharge port 17, disconnect the hose 20 from the water inlet connector 19, and neatly store the hose 20. If the hopper 3 has been disassembled, wait for it to dry and then reinstall it on the frame 1 using the quick clips. Adjust the support adjustment components to ensure that the hopper 3 is level.

[0043] Check if the elastic scraper 14 of the scraper assembly is worn. If it is severely worn, replace it in time. Clean the water outlet of the spray head 15 to prevent impurities from clogging it. Check if the sealing gasket 21 and the leak-proof ring 22 are aged or damaged. If there are any problems, replace them in time. Check the locking effect of the quick buckle to ensure that the hopper 3 is securely fixed.

[0044] Wipe the water stains and dust off the surfaces of the frame 1, weighing platform 2, and hopper 3 to keep the equipment clean. Clean the impurities discharged from the slag discharge port 17 to avoid accumulation and environmental pollution. Place the equipment in a dry and ventilated area to prevent moisture from causing parts to rust.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phosphate fertilizer packaging scale that is easy to clean, characterized in that, include: Rack (1); Weighing platform (2), the weighing platform (2) is located in the middle of the frame (1), and the weighing platform (2) is elastically connected to the frame (1); A detachable hopper (3) is located above the weighing platform (2). The bottom of the hopper (3) is provided with a discharge port (4). The hopper (3) is detachably connected to the top of the frame (1) by a quick buckle. The anti-residue scraping assembly (5) includes a scraping ring (6), a drive rod (7) and a handle (8). The scraping ring (6) is located inside the hopper (3) and fits against the inner wall of the hopper (3). The drive rod (7) passes through the top of the hopper (3) and is fixedly connected to the scraping ring (6). The handle (8) is fixed to the top of the drive rod (7). A cleaning guide assembly (9) is provided on the hopper (3); Quick-connect assembly (10) is disposed on the hopper (3); A sealing and leak-proof assembly (11), said sealing and leak-proof assembly (11) being disposed on the frame (1); and The hopper support adjustment assembly (12) is located on the top of the frame (1).

2. The easy-to-clean phosphate fertilizer packaging scale according to claim 1, characterized in that, The detachable hopper (3) is made of stainless steel, with the inner wall polished into a smooth curved surface, and the side wall of the hopper (3) is provided with a transparent observation window (13).

3. The easy-to-clean phosphate fertilizer packaging scale according to claim 2, characterized in that, The scraper ring (6) is provided with an elastic scraper (14) on the outside. The elastic scraper (14) is made of polyurethane and is press-fitted with the inner wall of the hopper (3). The drive rod (7) is rotatably connected to the top of the hopper (3) through a bearing.

4. The easy-to-clean phosphate fertilizer packaging scale according to claim 3, characterized in that, The cleaning guide assembly (9) includes a spray head (15), a guide channel (16) and a slag discharge port (17). The spray head (15) is evenly distributed on the inner side of the top of the hopper (3). The guide channel (16) is arranged around the discharge port (4). The slag discharge port (17) is opened at the lowest end of the guide channel (16). The spray head (15) is evenly distributed along the circumference of the top of the hopper (3).

5. The easy-to-clean phosphate fertilizer packaging scale according to claim 4, characterized in that, The spray head (15) sprays water towards the inner wall of the hopper (3). The spray head (15) is a detachable structure. The guide channel (16) is an annular inclined structure. The inner wall of the guide channel (16) is provided with a wear-resistant coating. A detachable plug (18) is provided at the slag discharge port (17).

6. The easy-to-clean phosphate fertilizer packaging scale according to claim 5, characterized in that, The quick connection assembly (10) includes a water inlet connector (19) and a hose (20). The water inlet connector (19) is fixed to the outside of the hopper (3) and communicates with the spray head (15). One end of the hose (20) is detachably connected to the water inlet connector (19), and the other end is used to connect to a water source.

7. The easy-to-clean phosphate fertilizer packaging scale according to claim 6, characterized in that, The sealing and leak-proof assembly (11) includes a sealing gasket (21) and a leak-proof retaining ring (22). The sealing gasket (21) is located at the joint between the hopper (3) and the frame (1). The leak-proof retaining ring (22) is fixed to the edge of the guide channel (16). The sealing gasket (21) is made of rubber and has a trapezoidal cross-section. The sealing gasket (21) is bonded and fixed to the bottom of the hopper (3). The leak-proof retaining ring (22) is an annular protrusion and is integrally formed with the guide channel (16).

8. The easy-to-clean phosphate fertilizer packaging scale according to claim 7, characterized in that, The hopper support adjustment assembly (12) includes a support screw (23) and an adjustment knob (24). The support screw (23) is fixed to the bottom of the frame (1). The adjustment knob (24) is threadedly connected to the support screw (23), and its top end abuts against the bottom of the hopper (3). The support screw (23) is respectively located at the four corners of the bottom of the hopper (3).