Reaction kettle for preparing water-soluble fertilizer

Abstract

The present application relates to the technical field of fertilizer preparation, and particularly relates to a reaction kettle for water-soluble fertilizer preparation, which comprises a kettle body for raw material reaction and a kettle cover detachably installed on the upper end of the kettle body; the reaction kettle for water-soluble fertilizer preparation further comprises a stirring and sampling group, which is detachably connected to the kettle cover and comprises a rotating sampling part detachably connected to the kettle cover. The sampling group, the rotating sampling part and the stirring sampling part are used in cooperation, so that the operation of equipment installation is reduced during sampling, sampling of raw materials at different depths in the kettle body is simultaneously realized in one sampling process, the number of sampling operations of raw materials is effectively reduced, the sampling efficiency is improved, sampling of raw materials at different depths is completed by multiple sampling points in cooperation, thereby the multi-point sampling function at the same depth and different positions is realized, and the accuracy of detection of the mixing degree of the stirred raw materials is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fertilizer preparation, in particular to a reaction kettle for water-soluble fertilizer preparation. BACKGROUND

[0002] The water-soluble fertilizer reaction kettle is a core chemical reaction equipment specially used for producing water-soluble fertilizer. It is a key container for mixing and dissolving various raw materials, chemical reaction, crystallization, and aging under controlled conditions.

[0003] The water-soluble fertilizer raw material mixing reaction is usually carried out by stirring, which not only accelerates the mixing of raw materials but also avoids the precipitation during the core technology of crystallization reaction for producing high-quality water-soluble fertilizer. In order to ensure the high quality of water-soluble fertilizer, raw material sampling is a key link of quality control.

[0004] The existing technology usually opens the sampling port on the reaction kettle first under the condition that the reaction kettle is stable, then inserts a glass tube or a stainless steel tube into the liquid, and then controls the flow by a pump or a valve and carries out sampling. In order to ensure the accuracy of the sampling detection result, sampling needs to be carried out at different positions. After sampling is completed, the sampling port is closed. However, the existing sampling steps can only sample from one sampling point at a time. Multiple samples need multiple sampling operations, which reduces the sampling efficiency. In addition, the small aperture and fixed position of the sampling port make the sampling area small, the sampling positions change little, the sampling repetition is high, and the sample representativeness is insufficient.

[0005] Therefore, it is urgent to provide a reaction kettle which can improve the sampling efficiency and increase the sampling positions. SUMMARY

[0006] Therefore, it is urgent to provide a reaction kettle which can improve the sampling efficiency and increase the sampling positions.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a reaction kettle for water-soluble fertilizer preparation, comprising: a kettle body for raw material reaction and a kettle cover detachably installed on the upper end of the kettle body.

[0008] The reaction kettle for water-soluble fertilizer preparation further comprises a stirring and sampling group, which is detachably connected to the kettle cover. The stirring and sampling group comprises a rotating sampling part detachably connected to the kettle cover, a sealing part connected to the rotating sampling part, and a plurality of stirring and sampling parts uniformly distributed from top to bottom.

[0009] The rotating sampling part comprises a rotating rod arranged in the middle of the kettle body and rotatable. A plurality of vertical accommodating cavities are uniformly arranged on the inner circumferential surface of the rotating rod. The depth of each accommodating cavity increases along a spiral path. An sampling hole is arranged on the cavity wall of the bottom of each accommodating cavity away from the axis of the rotating rod.

[0010] The stirring sampling part comprises a plurality of connecting pipes which are uniformly distributed in the circumference and connected to the rotating rod, one connecting pipe is communicated with a corresponding sampling hole, two flow guide holes are symmetrically arranged on the wall of the connecting pipe, an inclined stirring plate is installed at the end of the connecting pipe away from the rotating rod, a plurality of linearly distributed flow guide holes are arranged in the middle of the stirring plate, and a flow guide channel is arranged between the flow guide holes and the connecting pipe.

[0011] The reaction kettle for preparing water-soluble fertilizer also comprises a sampling group connected to the upper end of the rotating sampling part, the sampling group comprises a plurality of liquid inlet parts which are uniformly distributed in the circumference and connected to the top walls of the corresponding accommodating cavities respectively, a transition container for temporarily storing samples is detachably connected to the upper end of the liquid inlet part, a collecting part is detachably connected to the transition container, and a vacuum ventilation part is detachably connected to the plurality of transition containers.

[0012] Preferably, the rotating sampling part further comprises a cover plate which is sleeved on the rotating rod and rotationally connected to the rotating rod through a bearing, and the cover plate is detachably connected to the middle of the kettle cover.

[0013] Preferably, the sealing part comprises a connecting ring arranged above the rotating rod, a plurality of lifting rods are arranged at the lower end of the connecting ring, the lower end of the lifting rod is slidably penetrated through the top wall of the corresponding accommodating cavity and located in the corresponding accommodating cavity, a sealing ring is arranged on the top wall of the accommodating cavity and the lifting rod, the lengths of the plurality of lifting rods gradually increase along a spiral path and correspond to the depths of the plurality of accommodating cavities one by one, a sealing block for sealing the sampling hole is arranged at the lower end of the lifting rod, and a sealing gasket is arranged on the sealing block.

[0014] Preferably, the liquid inlet part comprises a conveying pipe which is installed through the top wall of the corresponding accommodating cavity, a liquid inlet pipe is detachably installed at the upper end of the conveying pipe, and a valve one is installed on the liquid inlet pipe.

[0015] Preferably, the collecting part comprises two communication pipes which are symmetrically arranged on one side of the transition container, the communication pipes are detachably connected to the transition container, a valve two is installed on the communication pipe, a U-shaped pipe is detachably installed at the ends of the two communication pipes away from the transition container, a bottle clamping module is installed on the lower side horizontal section of the U-shaped pipe, and a sampling bottle is detachably connected to the lower end of the bottle clamping module.

[0016] Preferably, the vacuum ventilation part comprises a plurality of ventilation pipes which are uniformly distributed in the circumference, the ventilation pipes are detachably connected to the upper ends of the plurality of transition containers through bolts respectively, a gas collecting frame is commonly installed and communicated at the ends of the plurality of ventilation pipes away from the transition containers, and a flow pipe is installed and communicated at the upper end of the gas collecting frame.

[0017] Preferably, there is an included angle between the linearly distributed track of the plurality of flow guide holes two and the length direction of the stirring plate.

[0018] Preferably, a plurality of uniform distribution of the flow guide hole three is arranged on the stirring plate.

[0019] Preferably, a plurality of the flow guide channel structure is the same only length is different, and the plurality of flow guide channels are distributed along the width direction of the stirring plate.

[0020] Preferably, the rotating rod is rotated by the driving group.

[0021] Preferably, the driving group comprises a transmission member detachably connected to the rotating rod, and a driving module is fixedly connected to the upper end of the transmission member.

[0022] Preferably, the transmission member is composed of a mounting ring, a plurality of transmission rods and a transmission plate, both ends of the plurality of transmission rods are fixedly connected to the mounting ring and the transmission plate respectively, and the mounting ring is detachably mounted on the rotating rod.

[0023] Preferably, a plurality of feeding pipes and exhaust pipes are mounted on the cover.

[0024] Preferably, a discharge pipe is mounted at the lower end of the kettle body, and a control valve is mounted on the discharge pipe.

[0025] In summary, the present application has the following beneficial technical effects: 1. The sampling group of the present application cooperates with the rotating sampling part and the stirring sampling part, reduces the operation of equipment installation during sampling, realizes sampling of raw materials at different depths in the kettle body at one time, effectively reduces the number of raw material sampling operations, improves the sampling efficiency, and the sampling of raw materials at different depths is completed by a plurality of sampling points, thereby realizing the multi-point sampling function at the same depth and different positions, effectively increasing the sampling position of the raw materials in the kettle body, and improving the accuracy of the detection of the mixing degree of the stirred raw materials.

[0026] 2. The rotating sampling part and the stirring sampling part cooperate with each other, can also stir and mix raw materials at different depths, and increase the flow path of the raw materials, thereby effectively improving the mixing effect of the raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The three-dimensional structure schematic diagram of the present application is shown.

[0029] Figure 2 The three-dimensional structure schematic diagram of the stirring sampling group and the sampling group of the present application is shown.

[0030] Figure 3 The front view of the present application is shown.

[0031] Figure 4 The front view of the present application is shown. Figure 3 The sectional view of A-A in the present application is shown.

[0032] Figure 5 The first perspective structural schematic diagram of the connecting ring, sealing block and sealing part of the present application is shown.

[0033] Figure 6 The second perspective structural schematic diagram of the connecting ring, sealing block and sealing part of the present application is shown.

[0034] Figure 7 The structural schematic diagram of the sealing part of the present application is shown.

[0035] Figure 8 The structural schematic diagram of the partial rotating sample feeding part, partial sealing part and stirring sample feeding part of the present application is shown.

[0036] Figure 9 The structural schematic diagram of the sampling group of the present application is shown.

[0037] The above drawings include the following reference signs: 1, kettle body; 10, discharge pipe; 11, control valve; 2, kettle cover; 20, feeding pipe; 21, exhaust pipe; 3, stirring sample feeding group; 30, rotating sample feeding part; 300, rotating rod; 301, containing cavity; 302, sample feeding hole; 303, cover plate; 31, sealing part; 310, connecting ring; 311, lifting rod; 312, sealing block; 32, stirring sample feeding part; 320, connecting pipe; 321, flow guide hole one; 322, stirring plate; 323, flow guide hole two; 324, flow guide channel; 325, flow guide hole three; 4, sampling group; 40, liquid feeding part; 400, conveying pipe; 401, liquid feeding pipe; 402, valve one; 41, transition container; 42, collection part; 420, communication pipe; 421, valve two; 422, U-shaped pipe; 423, bottle clamping module; 424, sampling bottle; 43, vacuum aeration part; 430, aeration pipe; 431, gas collection frame; 432, flow-through pipe; 5, driving group; 50, transmission member; 500, mounting ring; 501, transmission rod; 502, transmission plate; 51, driving module. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more obvious and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0039] Referring to Figure 1 , Figure 3 and Figure 4 , the reaction kettle for preparing water-soluble fertilizer comprises a kettle body 1 for raw material reaction and a kettle cover 2 detachably mounted on the upper end of the kettle body 1 by bolts; a plurality of feeding pipes 20 and an exhaust pipe 21 are mounted on the kettle cover 2; a discharge pipe 10 is mounted on the lower end of the kettle body 1, and a control valve 11 is mounted on the discharge pipe 10.

[0040] In specific work, the kettle body 1 is installed in the working position, the control valve 11 is in the closed state in the initial state, then the kettle cover 2 is installed on the kettle body 1 by bolts, then the required raw materials are fed into the kettle body 1 from the feeding pipes 20, and then the feeding pipes 20 are sealed.

[0041] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5 , the reaction kettle for preparing water-soluble fertilizer further comprises a stirring and sampling group 3 which is detachably connected to the kettle cover 2, the stirring and sampling group 3 comprises a rotating sampling part 30 which is detachably connected to the kettle cover 2, the rotating sampling part 30 comprises a rotating rod 300 which is arranged in the middle of the kettle body 1 and is rotatable, a plurality of vertical accommodating cavities 301 are uniformly arranged on the inner circumferential surface of the rotating rod 300, an inlet hole 302 is arranged on the cavity wall of the bottom of each accommodating cavity 301 away from the axis of the rotating rod 300, the rotating sampling part 30 further comprises a cover plate 303 which is sleeved on the rotating rod 300 and is rotatably connected to the rotating rod 300 through a bearing, and the cover plate 303 is detachably connected to the middle part of the kettle cover 2 by bolts.

[0042] Referring to Figure 2 , Figure 5 and Figure 8The rotating sample inlet part 30 is connected with a sealing part 31 and multiple stirring sample inlet parts 32 uniformly distributed from top to bottom, the stirring sample inlet part 32 comprises multiple connecting pipes 320 uniformly distributed in circumference and connected on the rotating rod 300 by welding, one connecting pipe 320 communicates with the corresponding sample inlet hole 302, two flow guide holes one 321 are symmetrically arranged on the wall of the connecting pipe 320, an inclined stirring plate 322 is arranged on the end of the connecting pipe 320 away from the rotating rod 300, multiple linearly distributed flow guide holes two 323 are arranged in the middle of the stirring plate 322, and a flow guide channel 324 is arranged between the flow guide holes two 323 and the connecting pipe 320, and multiple uniformly distributed flow guide holes three 325 are arranged on the stirring plate 322.

[0043] Referring to Figure 1 and Figure 4 , the rotating rod 300 is rotated by the driving group 5; the driving group 5 comprises a transmission member 50 detachably connected on the rotating rod 300, and a driving module 51 fixedly connected on the upper end of the transmission member 50; the transmission member 50 is composed of a mounting ring 500, multiple transmission rods 501 and a transmission plate 502, both ends of the multiple transmission rods 501 are fixedly connected on the mounting ring 500 and the transmission plate 502 respectively, and the mounting ring 500 is detachably mounted on the rotating rod 300 by bolts.

[0044] In the initial state, the sealing part 31 seals the multiple sample inlet holes 302, after the raw materials enter the kettle body 1, the driving module 51 is started, the driving module 51 is composed of an existing driving motor and a transmission shaft, the driving module 51 drives the multiple transmission rods 501 to rotate through the transmission plate 502, the multiple transmission rods 501 drive the rotating rod 300 to rotate through the mounting ring 500, the rotating rod 300 drives the multiple stirring plates 322 of different heights to rotate through the multiple connecting pipes 320, so that the raw materials at different depths in the kettle body 1 are stirred and mixed, when the stirring plate 322 stirs the raw materials, the multiple flow guide holes three 325 on the stirring plate 322, the multiple flow guide holes two 323 and the flow guide holes one 321 on the connecting pipe 320 guide the raw materials, increase the flow path of the raw materials during stirring, and thus improve the stirring effect of the raw materials, and the sealing part 31 can prevent the un-stirred raw materials from entering the corresponding containing cavity 301 through the multiple sample inlet holes 302 during the stirring stage, so as to avoid affecting the sampling result.

[0045] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 9The reaction kettle for water-soluble fertilizer preparation further comprises a sampling set 4 connected to the upper end of the rotating sampling part 30, the sampling set 4 comprises a plurality of liquid inlet parts 40 uniformly distributed in the circumferential direction and respectively connected to the top wall of the corresponding accommodating cavity 301, the upper end of the liquid inlet part 40 is detachably connected with a transition container 41 for temporarily storing samples through bolts, the transition container 41 is detachably connected with a collection part 42 through bolts, and a plurality of transition containers 41 are commonly detachably connected with a vacuum ventilation part 43 through bolts.

[0046] In specific work, in the initial state, the sampling set 4 is installed on the kettle cover 2 at the same time as the rotating sampling part 30, thereby reducing the steps of installing the sampling set 4 when sampling after stirring, effectively reducing the operation steps of sampling, and when the raw materials in the kettle body 1 are stirred, the sampling set 4 rotates at the same time as the rotating sampling part 30.

[0047] Referring to Figure 2 and Figure 9 , the vacuum ventilation part 43 comprises a plurality of ventilation pipes 430 uniformly distributed in the circumferential direction, and the ventilation pipes 430 are respectively detachably connected with the upper ends of the plurality of transition containers 41 through bolts, the far ends of the plurality of ventilation pipes 430 are commonly installed and communicated with a gas collection frame 431, and the upper end of the gas collection frame 431 is installed and communicated with a flow pipe 432.

[0048] In specific work, after the raw materials in the kettle body 1 are stirred for a period of time, the existing vacuum pump is detachably installed with the flow pipe 432.

[0049] Referring to Figure 2 and Figure 9 , the liquid inlet part 40 comprises a conveying pipe 400 installed through the top wall of the corresponding accommodating cavity 301, the upper end of the conveying pipe 400 is detachably installed with a liquid inlet pipe 401 through bolts, and the liquid inlet pipe 401 is installed with a valve one 402.

[0050] Referring to Figure 2 and Figure 9 , the collection part 42 comprises two communication pipes 420 symmetrically arranged on one side of the transition container 41, the communication pipes 420 are detachably connected with the transition container 41 through bolts, the communication pipes 420 are installed with valve two 421, the far ends of the two communication pipes 420 from the transition container 41 are commonly detachably installed with a U-shaped pipe 422 through bolts, the lower side horizontal section of the U-shaped pipe 422 is installed with a bottle clamping module 423, the bottle clamping module 423 is a bottle connector for detachably connecting a sampling bottle, the bottle clamping module 423 is communicated with the U-shaped pipe 422, and the lower end of the bottle clamping module 423 is detachably connected with a sampling bottle 424 through thread connection or clamping.

[0051] In the specific work, after the raw materials in the kettle body 1 are stirred, the plurality of valves 402 are opened, the valve 402 and the valve 421 are existing sealing valves, which can be manually or electrically operated, then the vacuum pump is started, the vacuum pump extracts the air in the flow pipe 432 to form a negative pressure environment, the flow pipe 432 is communicated with the gas collecting frame 431, the air pipe 430, the transition container 41 and the conveying pipe 400, so that the whole vacuum air part 43, the transition container 41 and the liquid inlet part 40 are in a negative pressure environment.

[0052] Referring to Figure 5 , Figure 6 and Figure 7 , the depths of the plurality of accommodating cavities 301 increase along the spiral path, the sealing part 31 comprises a connecting ring 310 arranged above the rotating rod 300, a plurality of lifting rods 311 are arranged at the lower end of the connecting ring 310, the lower ends of the lifting rods 311 slide through the top walls of the corresponding accommodating cavities 301 and are located in the corresponding accommodating cavities 301, the lengths of the plurality of lifting rods 311 gradually increase along the spiral path and correspond to the depths of the plurality of accommodating cavities 301 one by one, and a sealing block 312 for sealing the sample inlet hole 302 is arranged at the lower end of the lifting rod 311.

[0053] Referring to Figure 8 , the plurality of guide holes 323 exist an angle with the length direction of the stirring plate 322 along the linear distribution track, the plurality of guide channels 324 are the same in structure and different in length only, and the plurality of guide channels 324 are distributed along the width direction of the stirring plate 322.

[0054] Specifically, when the vacuum pump is started, the connecting ring 310 is pulled up, the connecting ring 310 drives the plurality of lifting rods 311 to rise, the lifting rods 311 are provided with sealing rings at the top wall of the containing cavity 301, the plurality of lifting rods 311 drive the plurality of corresponding sealing blocks 312 to rise and unseal the corresponding sample injection holes 302, so that the plurality of flow guide passages 324 on the connecting pipe 320 and the stirring plate 322 connected with the corresponding sample injection holes 302 and at different heights are in communication with the containing cavity 301, the sealing blocks 312 are provided with sealing pads on the top, improving the sealing effect of the sample injection holes 302, the depths of the plurality of containing cavities 301 increase along the spiral path, which can realize containing of raw materials at different depths after stirring, then the plurality of conveying pipes 400 in the negative pressure environment simultaneously suck the air in the plurality of containing cavities 301, the containing cavities 301 suck the connecting pipe 320 through the sample injection holes 302, the connecting pipe 320 sucks the raw materials in this area after stirring through the flow guide holes one 321, the connecting pipe 320 sucks the plurality of flow guide passages 324, the plurality of flow guide passages 324 suck the raw materials after stirring through the plurality of flow guide holes two 323 for guiding the flow of the raw materials during stirring, the plurality of flow guide holes two 323 are linearly distributed and located in different areas of the stirring plate, which can realize sampling of raw materials in different areas at the same depth, effectively increasing the sampling points of the raw materials in one sampling process, the raw materials in the plurality of sampling points can effectively improve the accuracy of the detection of the mixing degree of the raw materials after stirring, the raw materials sampled by the plurality of sampling points enter the corresponding containing cavities 301, and then enter the corresponding transition containers 41 through the corresponding conveying pipes 400, then the plurality of valves one 402 are closed and the work of the vacuum pump is stopped, then the plurality of valves two 421 are opened, so that the transition containers 41 are in communication with the corresponding communication pipes 420 and U-shaped pipes 422, the raw materials in the plurality of transition containers 41 flow into the bottle clamping module 423 through the communication pipes 420 located on the lower side and enter the sample bottles 424, when the raw materials enter the sample bottles, the plurality of valves two 421 are closed, and the plurality of sample bottles 424 are separated from the corresponding bottle clamping modules 423, realizing the function of sampling of raw materials, which can simultaneously sample raw materials at different depths in one sampling operation, thereby obtaining a plurality of different samples, effectively reducing the number of sampling operations of the raw materials, improving the sampling efficiency of the raw materials, and obtaining raw material samples at different depths in one sampling, further improving the accuracy of the detection of the mixing degree of the raw materials after stirring.

[0055] After the sampling and detection of the raw materials are completed, if the detection result does not reach the standard, the stirring and sampling detection are continued until the detection result reaches the standard, then the control valve 11 is opened, the control valve 11 is a sealing valve, the mixed raw materials are discharged through the discharge pipe 10, and the mixing is completed.

[0056] In the description of the embodiments of the present application, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified and limited, the term "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reaction vessel for preparing water-soluble fertilizer, comprising a vessel body and a vessel lid, characterized in that: A stirring and injection assembly is connected to the vessel lid. The stirring and injection assembly includes a rotating injection part connected to the vessel lid, a sealing part connected to the rotating injection part, and multiple stirring and injection parts distributed from top to bottom. The rotating sample inlet includes a rotating rod located in the middle of the vessel body and capable of rotation. Multiple cavities are provided in the inner circumference of the rotating rod. The depth of the multiple cavities increases along a spiral path. A sample inlet hole is provided on the cavity wall at the bottom of each cavity away from the axis of the rotating rod. The stirring and feeding section includes multiple connecting pipes circumferentially connected to the rotating rod. One of the connecting pipes is connected to the corresponding injection port. Two guide holes are symmetrically opened on the wall of the connecting pipe. An inclined stirring plate is installed at the end of the connecting pipe away from the rotating rod. Multiple linearly distributed guide holes are opened in the middle of the stirring plate. A guide channel is opened between the guide holes and the connecting pipe. A sampling group is connected to the upper end of the rotating sample inlet. The sampling group includes multiple liquid inlet sections respectively connected to the top wall of the corresponding accommodating cavity. A transition container is connected to the upper end of the liquid inlet section. A collection section is connected to the transition container. A vacuum ventilation section is connected to the multiple transition containers. The trajectories of the multiple guide holes distributed along a straight line are at an angle to the length direction of the stirring plate; The multiple flow channels have the same structure but different lengths, and the multiple flow channels are distributed along the width direction of the stirring plate.

2. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The rotating sample injection unit also includes a cover plate sleeved on the rotating rod and rotatably connected to the rotating rod via a bearing. The cover plate is detachably connected to the middle of the vessel lid.

3. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The sealing part includes a connecting ring disposed above the rotating rod, and multiple lifting rods at the lower end of the connecting ring. The lower ends of the lifting rods slide through the top wall of the corresponding receiving cavity and are located in the corresponding receiving cavity. Sealing rings are laid at the lifting rods and the top wall of the receiving cavity. The lengths of the multiple lifting rods gradually increase along the spiral path and correspond one-to-one with the depths of the multiple receiving cavities. A sealing block for sealing the sample inlet is installed at the lower end of the lifting rod, and a sealing gasket is laid on the sealing block.

4. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The liquid inlet section includes a delivery pipe that passes through and is installed on the top wall of the corresponding accommodating cavity. A liquid inlet pipe is detachably installed on the upper end of the delivery pipe, and a valve is installed on the liquid inlet pipe.

5. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The collection unit includes two connecting pipes symmetrically arranged on one side of the transition container. The connecting pipes are detachably connected to the transition container. A valve is installed on the connecting pipe. A U-shaped pipe is detachably installed on the end of the two connecting pipes away from the transition container. A bottle-holding module is installed on the lower horizontal section of the U-shaped pipe. A sampling bottle is detachably connected to the lower end of the bottle-holding module.

6. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The vacuum ventilation section includes multiple circumferentially distributed ventilation pipes, and the ventilation pipes are detachably connected to the upper ends of multiple transition containers by bolts. The ends of the multiple ventilation pipes away from the transition containers are installed together and connected to a gas collection frame. A flow pipe is installed and connected to the upper end of the gas collection frame.

7. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The stirring plate is also provided with a number of evenly distributed guide holes.

8. The reaction vessel for preparing water-soluble fertilizer according to claim 1, characterized in that: The rotating rod is rotated by a drive assembly.

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