A storage device for water-soluble fertilizer production

Abstract

The invention relates to a storage device for producing water-soluble fertilizers in the field of storage devices. The storage device comprises a storage tank body, a sealing cover is clamped on the storage tank body, the storage tank body comprises an inner tank body and an outer insulation tank, a sealing ring for sealing the opening of the inner tank body is installed at the opening of the outer insulation tank, the sealing cover comprises a main cover body covering the opening of the inner tank body, and a sealing cover ring is installed at the outer end of the main cover body; a plurality of auxiliary sealing columns are fixedly connected to the outer wall of the outer insulation tank, a butt sealing ring is connected between the top ends of the plurality of auxiliary sealing columns, the auxiliary sealing columns comprise a shell, a liquid pump is arranged in the shell, an input end of the liquid pump is connected with a butt joint, the butt sealing ring comprises a main ring body, a liquid infusion ring is arranged at the side end of the main ring body, and an annular sealing groove matching the liquid infusion ring is opened in the main ring body; a plurality of detection columns are arranged in the annular sealing groove, and a bubble sensor and a liquid level sensor are installed on the detection columns; and the monitoring of the sealing performance during transportation and the auxiliary sealing when the sealing performance decreases are realized.

Description

Technical Field

[0001] The invention relates to a storage device for producing water-soluble fertilizer, in particular to a storage device for producing water-soluble fertilizer applied in the field of storage devices. Background Art

[0002] Water-soluble fertilizer storage devices are devices used to store water-soluble fertilizers safely and efficiently to ensure that the fertilizers maintain their chemical stability and effectiveness before use. With the development of modern agricultural technology, the demand for water-soluble fertilizers is increasing, so the design and function of storage devices are also constantly improving.

[0003] Water-soluble fertilizer storage devices currently on the market are usually made of corrosion-resistant materials to accommodate the acidic or alkaline components that may be contained in the fertilizer. The design of these devices takes into account issues such as temperature control, humidity regulation, and prevention of fertilizer caking. For example, some storage tanks are equipped with temperature control systems to avoid high temperatures causing fertilizer decomposition or failure. At the same time, in order to reduce water evaporation and prevent fertilizer from absorbing moisture, the storage device may adopt a sealed design and be equipped with a humidity monitoring and regulation system.

[0004] In addition, in order to facilitate transportation and use, the design of storage devices tends to be modular and mobile. Some devices can be quickly assembled and disassembled for easy use in different locations. At the same time, in order to improve operational safety, storage devices are usually equipped with safety valves and leakage detection systems to ensure that timely measures can be taken in the event of leakage.

[0005] In summary, water-soluble fertilizer storage devices have made significant progress in material selection, design functions, mobility, safety, and intelligence to meet the needs of modern agriculture for efficient and safe fertilizer storage.

[0006] In order to solve the problem of sealing of water-soluble fertilizer storage devices, a storage device on the market adopts a sealing ring design and has a certain market share.

[0007] The specification of Chinese invention patent CN116750358A discloses a waterproof and moisture-proof water-soluble fertilizer storage device for transportation, which belongs to the technical field of water-soluble fertilizer storage, including a storage and transportation main tank, and also includes: a central rod fixedly connected to the inner wall of the storage and transportation main tank, the outer wall of the central rod is fixedly connected to a support plate, and the outer wall of the support plate is provided with a plurality of positioning grooves; a storage and transportation sub-tank clamped in the inner cavity of the storage and transportation main tank, the outer wall of the storage and transportation sub-tank is fixedly connected to a first clamping strip, and the first clamping strip and the positioning groove match each other; a first slide groove is provided on the surface of the support plate, an adjustment plate is slidably connected in the first slide groove, and a first spring is fixedly connected between the adjustment plate and the support plate; a first clamping groove is provided on the side wall of the first clamping strip, the side wall of the adjustment plate is fixedly connected to a clamping column, and the first clamping groove and the clamping column match each other. The invention effectively reduces the influence of high air humidity on the quality of water-soluble fertilizers when using ocean transportation through subpackaging, and at the same time reduces the waste of water-soluble fertilizer resources.

[0008] Existing storage tanks have some defects in terms of sealing. The sealing gasket between the tank body and the lid of the existing storage tank may age or be damaged, resulting in an inability to form an effective seal, thereby causing leakage. The sealing defects not only affect the preservation quality of the stored substances, but may also bring safety risks. Summary of the invention

[0009] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the sealing gasket between the existing storage tank body and the lid may age or be damaged, resulting in the inability to form an effective seal, thereby causing leakage. The sealing defect not only affects the preservation quality of the stored material, but also may bring safety risks.

[0010] In order to solve the above problems, the present invention provides a storage device for water-soluble fertilizer production, comprising a storage tank body, a sealing cover is clamped on the storage tank body, the storage tank body comprises an inner tank body and an outer insulation tank, a sealing ring is installed at the opening of the outer insulation tank to seal the opening of the inner tank body, the sealing cover comprises a main cover body covering the opening of the inner tank body, and a sealing cover ring is installed at the outer end of the main cover body;

[0011] A plurality of auxiliary sealing columns are fixedly connected to the outer wall of the outer insulation tank, and a butt sealing ring is connected between the top ends of the plurality of auxiliary sealing columns. The auxiliary sealing column comprises a shell, a liquid pump is arranged in the shell, an input end of the liquid pump is connected to a butt joint, and the butt sealing ring comprises a main ring body, a liquid infusion ring is arranged at a side end of the main ring body, and an annular sealing groove matching the liquid infusion ring is opened in the main ring body;

[0012] A plurality of detection columns are arranged in the annular sealing groove, and a bubble sensor and a liquid level sensor are installed on the detection columns; a secondary sealing ring is installed at the top of the detection column, and a cylinder matching the detection column is installed in the auxiliary sealing column;

[0013] Two branch pipes are installed on the output end of the liquid pump, one branch pipe extends into the outer insulation tank, and the other branch pipe is connected to the infusion ring. A guide ring connected to the branch pipe is arranged inside the infusion ring, and a plurality of discharge ports facing the annular sealing groove are opened on the infusion ring.

[0014] In the above-mentioned storage device for producing water-soluble fertilizers, the sealing performance monitoring during transportation and the auxiliary sealing when the sealing performance decreases are achieved.

[0015] As a further improvement of the present application, an installation groove is opened on the shell, a fixing frame is installed in the installation groove, a butt joint is installed at the top of the inner wall of the installation groove, a liquid tank matching the fixing frame is detachably installed in the installation groove, a sealing liquid is stored in the liquid tank, and a butt interface matching the butt joint is installed at the opening of the liquid tank.

[0016] As a further improvement of the present application, an annular observation window matching the annular sealing groove is provided on the sealing cover ring, and a liquid suction ring inserted into the inner tank body is installed in the middle of the main cover body.

[0017] As a further improvement of the present application, an auxiliary sealing sheet is provided at the connecting seam between the sealing cover ring and the outer end of the main ring body, the auxiliary sealing sheet includes a water absorption expansion ring, an isolation film is laid on the surface of the water absorption expansion ring, and a water permeable hole is opened at one end of the water absorption expansion ring close to the docking sealing ring.

[0018] As another improvement of the present application, when the secondary closed ring is located at the initial position, its upper surface is level with the upper surface of the main ring body.

[0019] As another improved supplement of the present application, the secondary sealing ring includes an upper sealing pad, and water-absorbing expansion pads are installed on the side ends and the upper end of the upper sealing pad.

[0020] As another improved supplement of the present application, the outer end of the infusion ring is connected to a flange ring, the outer end of the sealing cover ring is installed with a positioning ring matching the flange ring, and a plurality of fixing bolts are connected between the positioning ring and the flange ring.

[0021] As another improvement of the present application, a sealing monitoring system is also included, the sealing monitoring system includes a processor installed in the auxiliary sealing column, and a monitoring module, a data processing module, a control module and a data storage module are installed on the processor;

[0022] The monitoring module is used to monitor the environmental parameters in the storage tank body and the liquid sealing condition at the docking sealing ring. The environmental parameters include temperature, humidity and pressure. The environmental parameters are determined by the temperature and humidity sensors and air pressure sensors installed in the storage tank body; the liquid sealing condition is determined by the liquid level sensor and the bubble sensor;

[0023] The data processing module processes and analyzes the data collected by the monitoring module. The data processing module analyzes the temperature, humidity, pressure, liquid level and bubble data to determine whether the sealing condition of the storage tank is normal;

[0024] The control module controls the operation of the air cylinder or the liquid pump according to the analysis results of the data processing module, so as to make timely adjustments to the sealing system of the storage tank;

[0025] The data storage module is used to store the data collected by the monitoring module and the analysis results of the data processing module.

[0026] As another improvement supplement of the present application, when the data processing module determines that the liquid sealing condition is abnormal, it controls the cylinder to operate so that the secondary sealing ring descends, and the descending height of the secondary sealing ring matches the liquid level.

[0027] In summary, this solution sets an annular sealing groove at the joint of the sealing cover and the docking sealing ring to form a liquid sealing area at the sealing point. Through the sealing monitoring function of the detection column in the liquid sealing area and the auxiliary sealing function of the secondary sealing ring at the top of the detection column, the safety performance of the storage tank in the event of sealing abnormalities is further ensured; at the same time, the introduction of the sealing monitoring system ensures storage safety by monitoring environmental parameters and liquid sealing conditions, and timely adjusts the sealing system, thereby improving the intelligence level of the storage tank. Compared with existing storage tanks, this solution has significantly improved sealing performance, functionality and intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0029] Figure 2 It is a cross-sectional view of the first and second embodiments of the present application;

[0030] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0031] Figure 4 This is a cross-sectional view of the butt sealing ring of the first and second embodiments of the present application;

[0032] Figure 5 It is a front view of the first and second embodiments of the present application;

[0033] Figure 6 This is a diagram of the fully descending state of the secondary closed loop in the first and second embodiments of the present application;

[0034] Figure 7 This is a diagram of the normal working state of the secondary closed loop of the first and second implementation modes of the present application;

[0035] Figure 8 This is a system block diagram of the first and second implementation modes of the present application.

[0036] Description of the numbers in the figure:

[0037] 1 storage tank body, 11 inner tank body, 12 outer insulation tank, 2 sealing cover, 21 main cover body, 22 sealing cover ring, 23 positioning ring, 3 auxiliary sealing column, 31 shell, 32 liquid pump, 33 docking joint, 34 liquid tank, 35 cylinder, 4 docking sealing ring, 41 main ring body, 42 infusion ring, 43 flange ring, 5 detection column, 6 secondary closing ring, 7 annular sealing groove. DETAILED DESCRIPTION

[0038] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0039] The first implementation method:

[0040] Figure 1-Figure 6 A storage device for producing water-soluble fertilizer is shown, comprising a storage tank body 1, a sealing cover 2 is clamped on the storage tank body 1, the storage tank body 1 comprises an inner tank body 11 and an outer heat-insulating tank 12, a sealing ring for sealing the opening of the inner tank body 11 is installed at the opening of the outer heat-insulating tank 12, the sealing cover 2 comprises a main cover body 21 covering the opening of the inner tank body 11, and a sealing cover ring 22 is installed at the outer end of the main cover body 21;

[0041] A plurality of auxiliary sealing columns 3 are fixedly connected to the outer wall of the outer insulation tank 12, and a butt sealing ring 4 is connected between the top ends of the plurality of auxiliary sealing columns 3; the butt sealing ring 4 comprises a main ring body 41, a liquid infusion ring 42 is arranged at the side end of the main ring body 41, and the main ring body 41 is provided with an annular sealing groove 7 matching the liquid infusion ring 42; a plurality of detection columns 5 are arranged in the annular sealing groove 7, and a bubble sensor and a liquid level sensor are installed on the detection columns 5;

[0042] The auxiliary sealing column 3 includes a shell 31, a liquid pump 32 is arranged in the shell 31, the input end of the liquid pump 32 is connected to a docking joint 33, and two branch pipes are installed on the output end of the liquid pump 32, one branch pipe extends into the outer insulation tank 12, and the other branch pipe is connected to the infusion ring 42, and a guide ring communicating with the branch pipe is arranged in the infusion ring 42, and a plurality of discharge ports facing the annular sealing groove 7 are opened on the infusion ring 42; when the liquid pump 32 is working, the fluid in the liquid tank 34 is transported to the closed space between the sealing cover 2 and the docking sealing ring 4, so that the closed space forms a liquid sealing area for the storage tank body 1;

[0043] The outer end of the infusion ring 42 is connected with a flange ring 43, and the outer end of the sealing cover ring 22 is installed with a positioning ring 23 matching the flange ring 43, and a plurality of fixing bolts are connected between the positioning ring 23 and the flange ring 43;

[0044] The housing 31 is provided with an installation groove, a fixing frame is installed in the installation groove, a butt joint 33 is installed at the top of the inner wall of the installation groove, a liquid tank 34 matching the fixing frame is detachably installed in the installation groove, a sealing liquid is stored in the liquid tank 34, and the sealing liquid protects oil and water. Those skilled in the art can select a suitable liquid tank 34 for installation according to needs, so that the butt sealing ring 4 performs oil or water sealing on the storage tank body 1; a butt joint matching the butt joint 33 is installed at the opening of the liquid tank 34;

[0045] The liquid in the liquid tank 34 can also be injected into the space between the inner tank body 11 and the outer insulation tank 12 to assist the storage tank body 1 in cooling by water or assisting in heat preservation by protective oil.

[0046] The sealing cover ring 22 is provided with an annular observation window matching the annular sealing groove 7. The middle part of the main cover body 21 is provided with a liquid suction ring inserted into the inner tank body 11. The liquid suction ring is used to absorb the liquid leaked into the storage tank body 1 from the liquid sealing area.

[0047] An auxiliary sealing sheet is provided at the connection seam between the sealing cover ring 22 and the outer end of the main ring body 41. The auxiliary sealing sheet comprises a water-absorbing expansion ring with an isolation film laid on its surface. A water-permeable hole is opened at one end of the water-absorbing expansion ring close to the docking sealing ring 4.

[0048] A secondary sealing ring 6 is installed at the top of the detection column 5, and a cylinder 35 matching the detection column 5 is installed in the auxiliary sealing column 3. When the secondary sealing ring 6 is in the initial position, its upper surface is level with the upper surface of the main ring body 41. When the cylinder 35 contracts, the detection column 5 can be completely retracted into the telescopic end of the cylinder 35. When the detection column 5 is completely retracted into the telescopic end of the cylinder 35, the top of the detection column 5 is aligned with the surface of the annular sealing groove 7.

[0049] The secondary sealing ring 6 includes an upper sealing pad, and water-absorbing swelling pads are installed on the side ends and the upper end of the upper sealing pad. The water-absorbing swelling pad expands after absorbing water to ensure that the secondary sealing ring 6 can seal the joint between the sealing cover 2 and the storage tank body 1 and the docking sealing ring 4 after it is completely lowered.

[0050] Working principle: When the storage tank of this solution needs to be sealed, it is sealed through the sealing cover 2 and the docking sealing ring 4, and the sealing cover 2 closes the opening of the storage tank body 1;

[0051] The storage tank of this solution carries a liquid tank 34 when being transported, and the liquid tank 34 is used to replenish the liquid in the cooling and liquid sealing areas of the storage tank; when not being transported, the docking joint 33 can be connected to an external infusion tube, and the cooling and liquid sealing areas of the storage tank can be replenished with liquid through an external liquid supply system;

[0052] A bubble sensor and a liquid level sensor are provided on the detection column 5 in the liquid seal area; the bubble sensor and the liquid level sensor are used to detect sealing abnormalities in the liquid seal area; sealing abnormalities include: when the bubble sensor detects bubbles, it is judged that the air tightness of the liquid seal area is reduced, and the gas in the storage tank body 1 is leaking; when the liquid level sensor detects that the liquid level drops to the set liquid level, it is judged that the liquid seal fails, and the liquid in the liquid seal area is leaking;

[0053] When any sealing abnormality occurs, the cylinder 35 is controlled to work so that the secondary sealing ring 6 is driven to descend; when the secondary sealing ring 6 is completely descended, the secondary sealing ring 6 seals the joint between the sealing cover ring 22 and the storage tank body 1, and then the secondary sealing ring 6 is used for supplementary sealing. Since water-absorbing and expanding pads are installed on the side and upper ends of the secondary sealing ring 6, the secondary sealing ring 6 absorbs the liquid in the liquid sealing area during the descent process, thereby further improving the sealing effect, thereby achieving reliable temporary sealing protection through the secondary sealing ring 6 when the sealing is abnormal.

[0054] Second implementation method:

[0055] Figure 6-Figure 8 As shown, the present solution also includes a sealing monitoring system, which includes a processor installed in the auxiliary sealing column 3, on which a monitoring module, a data processing module, a control module and a data storage module are installed;

[0056] The monitoring module is used to monitor the environmental parameters in the storage tank body 1 and the liquid sealing condition at the docking sealing ring 4. The monitoring module is connected to the temperature and humidity sensor, the air pressure sensor, the liquid level sensor and the bubble sensor signal;

[0057] Environmental parameters include temperature, humidity and pressure. Environmental parameters are determined by temperature and humidity sensors and air pressure sensors installed in the storage tank body 1; the liquid seal condition is determined by a liquid level sensor and an air bubble sensor;

[0058] The temperature and humidity sensor is installed in the storage tank body 1 to monitor the temperature and humidity changes in the tank environment; this data is crucial to ensure stable storage conditions and prevent the water-soluble fertilizer from deteriorating.

[0059] The air pressure sensor is installed in the storage tank body 1 to monitor the pressure change in the tank. The pressure change may indicate the state of the fluid in the tank, such as leakage or abnormal pressure.

[0060] The liquid level sensor is installed on the detection column 5 to monitor the liquid level height in the liquid seal area. The drop in the liquid level means that the liquid seal fails, and it is necessary to replenish the liquid in time or start the auxiliary sealing ring 6 to assist the seal.

[0061] The bubble sensor is installed on the detection column 5 and is used to detect bubbles in the liquid seal area. The appearance of bubbles may indicate that the air tightness is reduced and there is a risk of gas leakage.

[0062] The data processing module processes and analyzes the data collected by the monitoring module. The data processing module analyzes the temperature, humidity, pressure, liquid level and bubble data to determine whether the sealing condition of the storage tank is normal.

[0063] The data processing module identifies potential sealing anomalies, such as decreased air tightness or liquid seal failure, based on preset thresholds and algorithms.

[0064] The control module controls the cylinder 35 or the liquid pump 32 to work according to the analysis results of the data processing module, so as to make timely adjustments to the sealing system of the storage tank. The specific functions include:

[0065] When the data processing module determines that the liquid seal condition is abnormal, the air cylinder 35 is controlled to work, so that the auxiliary sealing ring 6 is lowered, thereby achieving supplementary sealing;

[0066] Optionally, when the data processing module determines that the liquid seal fails and drives the auxiliary closed ring 6 to descend, the descending height of the auxiliary closed ring 6 matches the liquid level to ensure that the auxiliary closed ring 6 is in contact with the liquid surface after descending;

[0067] When the liquid level drop value in the liquid sealing area is less than the set value and the bubble sensor is not triggered, the control module controls the liquid pump 32 to work and replenish the liquid in the liquid sealing area to maintain the liquid sealing effect;

[0068] The data storage module is used to store the data collected by the monitoring module and the analysis results of the data processing module. These data can be used for subsequent fault diagnosis, performance evaluation and system optimization.

[0069] Through the synergistic effect of the above modules, the sealing monitoring system of this solution can effectively monitor and ensure the sealing performance of the storage device for water-soluble fertilizer production to ensure storage safety.

[0070] In summary, this solution sets an annular sealing groove 7 at the joint of the sealing cover 2 and the docking sealing ring 4 to form a liquid sealing area at the sealing point. Through the sealing monitoring function of the detection column 5 in the liquid sealing area and the auxiliary sealing function of the secondary sealing ring 6 at the top of the detection column 5, the safety performance of the storage tank in the event of sealing abnormalities is further ensured; at the same time, the introduction of the sealing monitoring system ensures storage safety by monitoring environmental parameters and liquid sealing conditions, and timely adjusts the sealing system, thereby improving the intelligence level of the storage tank. Compared with existing storage tanks, this solution has significantly improved sealing performance, functionality and intelligence.

[0071] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A storage device for producing water-soluble fertilizers, comprising a storage tank body (1), a sealing cover (2) being clamped on the storage tank body (1), characterized in that: The storage tank body (1) comprises an inner tank body (11) and an outer heat-insulating tank (12); a sealing ring for sealing the opening of the inner tank body (11) is installed at the opening of the outer heat-insulating tank (12); the sealing cover (2) comprises a main cover body (21) covering the opening of the inner tank body (11); a sealing cover ring (22) is installed at the outer end of the main cover body (21); A plurality of auxiliary sealing columns (3) are fixedly connected to the outer wall of the outer heat-insulating tank (12); a butt sealing ring (4) is connected between the top ends of the plurality of auxiliary sealing columns (3); the auxiliary sealing columns (3) include a shell (31); a liquid pump (32) is arranged in the shell (31); an input end of the liquid pump (32) is connected to a butt joint (33); the butt sealing ring (4) includes a main ring body (41); a liquid infusion ring (42) is arranged at a side end of the main ring body (41); and an annular sealing groove (7) matching the liquid infusion ring (42) is provided on the main ring body (41); A plurality of detection columns (5) are arranged in the annular sealing groove (7), and a bubble sensor and a liquid level sensor are installed on the detection columns (5); a secondary sealing ring (6) is installed at the top of the detection column (5), and a cylinder (35) matching the detection column (5) is installed in the auxiliary sealing column (3); Two branch pipes are installed on the output end of the liquid pump (32), one of the branch pipes extends into the outer heat preservation tank (12), and the other branch pipe is connected to the infusion ring (42), a guide ring in communication with the branch pipe is arranged in the infusion ring (42), and a plurality of discharge ports facing the annular sealing groove (7) are opened on the infusion ring (42); An auxiliary sealing sheet is provided at the connection seam between the sealing cover ring (22) and the outer end of the main ring body (41), the auxiliary sealing sheet comprising a water-absorbing expansion ring, a separation film being provided on the surface of the water-absorbing expansion ring, and a water-permeable hole being provided at one end of the water-absorbing expansion ring close to the butt sealing ring (4); When the secondary closed ring (6) is in the initial position, its upper surface is level with the upper surface of the main ring body (41); The secondary sealing ring (6) comprises an upper sealing pad, and a water-absorbing swelling pad is installed at the side end and the upper end of the upper sealing pad; The outer end of the infusion ring (42) is connected to a flange ring (43), the outer end of the sealing cover ring (22) is installed with a positioning ring (23) matching the flange ring (43), and a plurality of fixing bolts are connected between the positioning ring (23) and the flange ring (43); Also included is a sealing monitoring system, the sealing monitoring system comprising a processor installed in the auxiliary sealing column (3), the processor being installed with a monitoring module, a data processing module, a control module and a data storage module; The monitoring module is used to monitor the environmental parameters in the storage tank body (1) and the liquid sealing condition at the docking sealing ring (4), wherein the environmental parameters include temperature, humidity and pressure, and the environmental parameters are determined by a temperature and humidity sensor and an air pressure sensor installed in the storage tank body (1); the liquid sealing condition is determined by a liquid level sensor and an air bubble sensor; The data processing module processes and analyzes the data collected by the monitoring module. The data processing module analyzes the temperature, humidity, pressure, liquid level and bubble data to determine whether the sealing condition of the storage tank is normal; The control module controls the cylinder (35) or the liquid pump (32) to operate according to the analysis result of the data processing module, so as to timely adjust the sealing system of the storage tank; The data storage module is used to store the data collected by the monitoring module and the analysis results of the data processing module; When the data processing module determines that the liquid seal condition is abnormal, it controls the cylinder (35) to operate, causing the secondary sealing ring (6) to descend, and the descending height of the secondary sealing ring (6) matches the liquid level.

2. A storage device for water-soluble fertilizer production according to claim 1, characterized in that: The housing (31) is provided with a mounting groove, a fixing frame is installed in the mounting groove, the butt joint (33) is installed at the top of the inner wall of the mounting groove, a liquid tank (34) matching the fixing frame is detachably installed in the mounting groove, a sealing liquid is stored in the liquid tank (34), and a butt joint interface matching the butt joint (33) is installed at the opening of the liquid tank (34).

3. A storage device for water-soluble fertilizer production according to claim 1, characterized in that: The sealing cover ring (22) is provided with an annular observation window matching the annular sealing groove (7), and the middle part of the main cover body (21) is provided with a liquid suction ring inserted into the inner tank body (11).

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