Instrument and method for measuring water absorption capacity of water-retaining slow-release fertilizer

Abstract

The invention relates to the technical field of fertilizer water absorption measuring, and discloses a water-retention slow-release fertilizer water absorption measuring instrument and method.The water-retention slow-release fertilizer water absorption measuring instrument comprises a machine body, a detector is fixedly installed in the machine body, and a feeding block is fixedly installed at the top of the machine body. A telescopic air cylinder stretches out and draws back to drive a fixing ring to move, when the fixing ring moves, a movable rod can be driven to move, when the movable rod moves, due to the fact that a dredging block on a dredging wheel on the surface of the movable rod is inserted into a screen plate, the dredging wheel can abut against the screen plate when moving, and the dredging wheel is driven to rotate through the movable rod; when sliding, the abutting ring abuts against the outer wall of the dredging wheel, so that the dredging wheel and the dredging block are driven to be inserted into the screening plate, the screening efficiency is prevented from being affected by continuous blocking of screening holes through left-right reciprocating movement of the movable rod, the screening efficiency is improved, it is ensured that the detection result is accurate, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer water absorption measurement, and in particular to an instrument and method for measuring the water absorption of a water-retaining slow-release fertilizer. Background Art

[0002] During fertilizer production and subsequent processing, fertilizers often exhibit different particle state distributions. Due to the influence of various factors such as production process and storage conditions, fertilizer particles vary in size and are prone to agglomeration. From a physical perspective, screening and processing them is an important step in ensuring product quality and subsequent use effects. From a chemical perspective, fertilizers are mixtures of multiple chemical components. Fertilizers with different components have different chemical properties and different requirements for storage and subsequent processing. For example, some fertilizers containing ammonium nitrogen are prone to chemical reactions in humid environments, causing the fertilizer to agglomerate. After agglomeration, not only does the physical form of the fertilizer change, but its internal chemical structure may also undergo certain changes, affecting the release rate and uniformity of the fertilizer effect.

[0003] In existing fertilizer screening devices, most operations are based on the principle of a vibrating screen, just like in this device, after the material is fed through the feed block, the vibrating motor drives the screen plate to vibrate to achieve screening. The vibrating screen relies on the vibration of the screen plate to make the fertilizer move on its surface. Depending on the size of the particles, smaller particles can fall through the sieve holes of the sieve plate and be separated from larger particles. However, in this process, the sieve holes of the sieve plate are prone to clogging problems. Some fertilizer particles are irregular in shape and may get stuck in the sieve holes during vibration. Impurities contained in the fertilizer or adhesions formed by factors such as humidity can also cause clogging of the screen, which seriously affects the smooth progress of the screening process, greatly reduces the screening efficiency, and prolongs the entire screening process, failing to meet the needs of efficient production. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose an instrument and method for measuring the water absorption of a water-retaining slow-release fertilizer.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The cam is fixedly mounted on the outer wall of the body, and a sieve plate is fixedly mounted on the surface of the vibration shaft of the cam, the sieve plate is movably connected to the inside of the body, a detection frame is fixedly mounted on the inside of the body, a buffer spring is fixedly mounted on the top of the detection frame, and the buffer spring is fixedly mounted on the bottom of the sieve plate; it also includes a movable component for dredging fertilizers blocked at the sieve holes of the sieve plate; a moving component for causing the movable component to always adhere to the surface of the sieve plate when the sieve plate vibrates; a swinging component for scraping the fertilizer on the surface of the sieve plate; the movable component includes: a telescopic cylinder, the telescopic cylinder is fixedly mounted on the inner wall of the body, a fixed ring is fixedly mounted on the surface of the telescopic cylinder, a slip ring is slidably connected to the inside of the fixed ring, a rotating shaft is rotatably connected to the inside of the slip ring, a movable rod is slidably connected to the inside of the rotating shaft, a dredging wheel is provided on the surface of the movable rod, and a dredging block is fixedly mounted on the surface of the dredging wheel.

[0006] Preferably, the surface of the rotating shaft is slidably connected to a sliding rod, a connecting plate is fixedly installed on the top of the sliding rod, the connecting plate is fixedly installed on the outer wall of the slip ring, a resistance ring is fixedly installed on the outer side of the connecting plate, and the resistance ring is fixedly installed on the surface of the movable rod.

[0007] Preferably, the moving assembly includes: a snap ring, the snap ring is rotatably connected to the surface of the movable rod, a movable spring is fixedly installed on the outer side of the snap ring, and the dredging wheel is fixedly installed on the surface of the movable spring.

[0008] Preferably, a limiting ring is fixedly installed on the surface of the movable rod, a connecting spring is fixedly installed on the inner side of the limiting ring, the connecting spring is fixedly installed on the surface of the movable rod, a gear 1 is movably connected to the surface of the movable rod, a rack is engaged with the top of the gear 1, and the rack is fixedly installed on the inner wall of the body.

[0009] Preferably, the swing assembly includes: a rotating shaft, the rotating shaft is fixedly mounted on the inner side of gear one, gear two is fixedly mounted on the surface of the rotating shaft, and a gear disk is meshed on the outer side of gear two.

[0010] Preferably, a movable block passes through the surface of the movable rod, the gear disc is rotatably connected to the top of the movable block, a volute spring is fixedly installed on the bottom of the gear disc, and the volute spring is fixedly installed on the inner side of the movable block.

[0011] Preferably, a swing lever is fixedly mounted on the surface of the gear disc, a gear three is fixedly mounted on the top of the swing lever, the gear three is meshed with the surface of the gear disc, a bevel gear one is fixedly mounted on the bottom of the gear three, the surface of the bevel gear one is meshed with a bevel gear two, the bevel gear two is rotatably connected to the inside of the swing lever, a screw is fixedly mounted on the surface of the bevel gear two, a movable plate is threadedly connected to the surface of the screw, and the movable plate is slidably connected to the inside of the swing lever.

[0012] Preferably, an insert block is slidably connected to the interior of the movable plate, a return spring is fixedly installed on the top of the insert block, and the return spring is fixedly installed inside the movable plate.

[0013] Preferably, a reciprocating slide groove is provided on the surface of the rotating shaft, a groove is provided on the top of the screen plate, a feed block is fixedly installed on the top of the machine body, a discharge plate is fixedly installed on the machine body, and the discharge plate runs through the right side of the machine body.

[0014] A method for measuring the water absorption of a water-retaining slow-release fertilizer further comprises the following steps: Step 1: The operator first feeds the material through the feed block and starts the vibration motor. The vibration shaft of the vibration motor drives the screen plate to vibrate inside the machine body. Under the action of vibration, the fertilizer starts to move on the screen plate. Smaller particles and water stains in the fertilizer will fall through the sieve holes of the sieve plate and enter the detection frame below, while larger particles or agglomerated fertilizers remain on the surface of the sieve plate and wait for further processing. When the sieve holes of the sieve plate are blocked during the vibration process, the telescopic cylinder of the movable component is started. The telescopic cylinder telescopes and drives the fixed ring to move. When the fixed ring moves, it drives the movable rod to move. When the movable rod moves , since the dredge block on the dredge wheel on the surface of the movable rod is inserted into the inside of the sieve plate, when the dredge wheel moves, it will be resisted by the sieve plate, thereby driving the dredge wheel to rotate through the movable rod, and when the movable rod rotates, it will drive the rotation of the rotating shaft. When the rotating shaft rotates, it will resist the slide rod to slide back and forth through the reciprocating groove opened on its surface. When the slide rod slides back and forth, it will drive the connecting plate to slide back and forth. When the connecting plate slides back and forth, the resistance ring will slide on the surface of the movable rod. When the resistance ring slides, it will resist the outer wall of the dredge wheel, thereby driving the dredge wheel and the dredge block inserted in the inside of the sieve plate to move back and forth left and right through the movable rod; Step 2: When the movable rod drives the rotation of the dredge wheel and the dredge block, the dredge wheel and the dredge block are connected by a movable spring, and the resistance ring resists the dredge wheel and the dredge block, and when the dredge wheel and the dredge block slide, the dredge wheel will resist the outside of the connecting spring. The movement of the dredge wheel and the dredge block is restricted by the elasticity of the connecting spring and the resistance of the limiting ring. When the movable rod moves, it will also drive the surface gear 1 to slide at the bottom of the rack. Since the rack is engaged with the gear 1, the gear 1 will rotate synchronously when it slides.

[0015] The beneficial effects of the present invention are: 1. The present invention starts the telescopic cylinder of the movable component by setting up the movable component. The telescopic cylinder is telescopic to drive the fixed ring to move. When the fixed ring moves, it will drive the movement of the movable rod. When the movable rod moves, the dredge block on the dredge wheel on the surface of the movable rod is inserted into the inside of the sieve plate. Therefore, when the dredge wheel moves, it will be resisted by the sieve plate, thereby driving the dredge wheel to rotate through the movable rod. When the resistance ring slides, it will resist on the outer wall of the dredge wheel, thereby driving the dredge wheel and the dredge block inserted into the inside of the sieve plate to move back and forth left and right through the movable rod, preventing the sieve holes from being continuously blocked and affecting the screening efficiency, thereby improving the screening efficiency, ensuring the accuracy of the detection results, and extending the service life of the equipment.

[0016] 2. The present invention is provided with a movable component. When the movable rod drives the rotation of the dredge wheel and the dredge block, the dredge wheel and the dredge block are connected by a movable spring. When the contact ring contacts the dredge wheel and the dredge block and slides, the dredge wheel will contact the outside of the connecting spring. The movement of the dredge wheel and the dredge block is restricted by the elasticity of the connecting spring and the contact of the limiting ring, thereby improving the stability of the dredge operation and ensuring the reliability of the transmission system operation.

[0017] 3. The present invention is provided with a swinging assembly. When gear 1 rotates, it will also drive the rotation of the rotating shaft. When the rotating shaft rotates, it will drive the rotation of gear 2. When gear 2 rotates, since gear 2 is engaged with the outer side of the gear disc, the gear disc will swing accordingly. The gear disc is connected to the top of the movable block, and the movable block passes through the surface of the movable rod. The swinging rod fixed on the surface of the gear disc will swing with the rotation of the gear disc. Without this series of transmission and related components, the fertilizer on the surface of the screen plate, especially the larger particles or agglomerated fertilizers, will easily accumulate locally and cannot be effectively dispersed, thereby improving the screening efficiency and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural schematic diagram of a water-retaining slow-release fertilizer water absorption measuring instrument and method proposed by the present invention; Figure 2 This is a schematic cross-sectional view of an instrument and method for measuring water absorption of a water-retaining slow-release fertilizer proposed in the present invention; Figure 3 This is a schematic diagram of the connection structure of the active components, moving components, and swinging components of a water-retaining slow-release fertilizer water absorption measuring instrument and method proposed in the present invention; Figure 4 This is a schematic diagram of the front view of the structure of the active components of a water-retaining and slow-release fertilizer water absorption measuring instrument and method proposed by the present invention; Figure 5 This is a schematic diagram of the front view of the structure of the mobile component of the water-retaining slow-release fertilizer water absorption measuring instrument and method proposed by the present invention; Figure 6This is a schematic diagram of the front view of the swing assembly of a water-retaining slow-release fertilizer water absorption measuring instrument and method proposed in the present invention; Figure 7 This is a schematic cross-sectional structure diagram of a swing assembly of a water-retaining slow-release fertilizer water absorption measuring instrument and method proposed in the present invention; Figure 8 This is a side structural schematic diagram of a water-retaining slow-release fertilizer water absorption measuring instrument and method proposed by the present invention.

[0019] In the figure: 1, machine body; 2, detector; 3, feed block; 4, discharge plate; 6, vibration motor; 7, movable assembly; 71, telescopic cylinder; 72, fixed ring; 73, rotating shaft; 730, reciprocating slide; 74, movable rod; 75, dredging wheel; 76, dredging block; 77, slide rod; 78, connecting plate; 79, slip ring; 710, contact ring; 8, moving assembly; 81, snap ring; 82, movable spring; 83, limiting ring; 84, Connecting spring; 85, gear one; 86, rack; 9, swing assembly; 91, rotating shaft; 92, gear two; 93, toothed disc; 94, movable block; 913, scroll spring; 95, swing rod; 96, gear three; 97, bevel gear one; 98, bevel gear two; 99, screw; 910, movable plate; 911, insert block; 912, reset spring; 10, screen plate; 100, groove; 11, detection frame; 12, buffer spring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Please see the attached Figure 1 -Attached Figure 8 A water-retaining slow-release fertilizer water absorption capacity measuring instrument includes a body 1, a detector 2 is fixedly installed inside the body 1, a vibration motor 6 is fixedly installed on the outer wall of the body 1, a sieve plate 10 is fixedly installed on the surface of the vibration shaft of the vibration motor 6, the sieve plate 10 is movably connected to the inside of the body 1, a detection frame 11 is fixedly installed inside the body 1, a buffer spring 12 is fixedly installed on the top of the detection frame 11, and the buffer spring 12 is fixedly installed at the bottom of the sieve plate 10. The buffer spring 12 plays a buffering role, reducing the impact force of the vibration of the sieve plate 10 on the body 1, and also helps to maintain the stability of the vibration of the sieve plate 10; It also includes a movable component 7 for clearing the fertilizer blocked at the sieve holes of the sieve plate 10; The movable component 8 is used to ensure that the movable component 7 always adheres to the surface of the sieve plate 10 when the sieve plate 10 vibrates; The swing assembly 9 is used to scrape the fertilizer on the surface of the screen plate 10; First, the movable component 7 includes: a telescopic cylinder 71, which is fixedly mounted on the inner wall of the body 1, and a fixed ring 72 is fixedly mounted on the surface of the telescopic cylinder 71, and a slip ring 79 is slidably connected inside the fixed ring 72, and a rotating shaft 73 is rotatably connected inside the slip ring 79, and a movable rod 74 is slidably connected inside the rotating shaft 73, and a dredging wheel 75 is provided on the surface of the movable rod 74, and a dredging block 76 is fixedly mounted on the surface of the dredging wheel 75, and a sliding rod 77 is slidably connected on the surface of the rotating shaft 73, and a connecting plate 78 is fixedly mounted on the top of the sliding rod 77, and the connecting plate 78 is fixedly mounted on the outer wall of the slip ring 79, and a resistance ring 710 is fixedly mounted on the outside of the connecting plate 78, and the resistance ring 710 is fixedly mounted on the surface of the movable rod 74, and the movement of the dredging wheel 75 and the dredging block 76 can be used to achieve dredging to adapt to sieve holes of different sizes.

[0023] Secondly, the moving component 8 includes: a snap ring 81, which is rotatably connected to the surface of the movable rod 74, a movable spring 82 is fixedly installed on the outside of the snap ring 81, and a dredging wheel 75 is fixedly installed on the surface of the movable spring 82. A limiting ring 83 is fixedly installed on the surface of the movable rod 74, and a connecting spring 84 is fixedly installed on the inside of the limiting ring 83. The connecting spring 84 is fixedly installed on the surface of the movable rod 74, and a gear 1 85 is movably connected to the surface of the movable rod 74. A rack 86 is engaged with the top of the gear 1 85, and the rack 86 is fixedly installed on the inner wall of the body 1. It can be fixed on the surface of the movable spring 82 through the dredging wheel 75 to achieve pressure changes that adapt to different degrees of blockage.

[0024] Furthermore, the swing assembly 9 includes: a rotating shaft 91, which is fixedly mounted on the inner side of the gear 1 85, a gear 2 92 is fixedly mounted on the surface of the rotating shaft 91, a toothed disc 93 is meshed on the outer side of the gear 2 92, a movable block 94 is passed through the surface of the movable rod 74, the toothed disc 93 is rotatably connected to the top of the movable block 94, a vortex spring 913 is fixedly mounted on the bottom of the toothed disc 93, and the vortex spring 913 is fixedly mounted on the inner side of the movable block 94. The toothed disc 93 can be reset after the swing is completed by the vortex spring 913 provided on the surface of the toothed disc 93. A swing rod 95 is fixedly mounted on the surface of the toothed disc 93. Gear three 96 is fixedly installed on the top of 95, and gear three 96 is engaged with the surface of the gear disk 93. Bevel gear one 97 is fixedly installed on the bottom of gear three 96, and bevel gear two 98 is engaged with the surface of bevel gear one 97. Bevel gear two 98 is rotatably connected to the inside of the swing rod 95. A screw 99 is fixedly installed on the surface of bevel gear two 98, and a moving plate 910 is threadedly connected to the surface of screw 99. The moving plate 910 is slidably connected to the inside of the swing rod 95. An insert block 911 is slidably connected to the inside of the moving plate 910. A return spring 912 is fixedly installed on the top of the insert block 911, and the return spring 912 is fixedly installed inside the moving plate 910.

[0025] Finally, a reciprocating groove 730 is provided on the surface of the rotating shaft 73, and the reciprocating groove 730 provided on the surface of the rotating shaft 73 can be used to drive the slide rod 77 to slide when the rotating shaft 73 rotates. A groove 100 is provided on the top of the sieve plate 10, and the groove 100 starting from the top of the sieve plate 10 can be used to drive the movable block 94 to slide on the top of the sieve plate 10. A feed block 3 is fixedly installed on the top of the body 1, and a discharge plate 4 is fixedly installed on the body 1. The discharge plate 4 runs through the right side of the body 1.

[0026] A method for measuring the water absorption of a water-retaining slow-release fertilizer further comprises the following steps: Step 1: The operator first feeds the material through the feed block 3 and starts the vibration motor 6. The vibration shaft of the vibration motor 6 drives the screen plate 10 to vibrate inside the body 1. Under the action of vibration, the fertilizer starts to move on the screen plate 10. Smaller particles and water stains in the fertilizer will fall through the sieve holes of the sieve plate 10 and enter the detection frame 11 below, while larger particles or agglomerated fertilizers remain on the surface of the sieve plate 10, waiting for further processing. When the sieve holes of the sieve plate 10 are blocked during the vibration process, the telescopic cylinder 71 of the movable component 7 is started. The telescopic cylinder 71 is telescopic and drives the fixed ring 72 to move. When the fixed ring 72 moves, it drives the movable rod 74 to move. When the movable rod 74 moves, the dredge block 76 on the dredge wheel 75 on the surface of the movable rod 74 is inserted into the inside of the sieve plate 10. Therefore, when the dredge wheel 75 moves, it will be resisted by the sieve plate 10, thereby driving the dredge wheel 75 to rotate through the movable rod 74. When the movable rod 74 is rotated, it drives the rotation shaft 73. When the rotating shaft 73 rotates, it will contact the sliding rod 77 to slide back and forth left and right through the reciprocating groove 730 provided on its surface. When the sliding rod 77 slides back and forth, it drives the connecting plate 78 to slide back and forth. When the connecting plate 78 slides back and forth, it will contact the ring 710 on the surface of the movable rod 74. When the contact ring 710 slides, it will contact the outer wall of the dredging wheel 75, thereby driving the dredging wheel 75 and the dredging block 76 inserted into the interior of the sieve plate 10 to move back and forth through the movable rod 74 to prevent the sieve holes from being continuously blocked and affecting the screening efficiency. Once the sieve holes are blocked, if they are not dredged in time, more and more sieve holes will be blocked, which will make it impossible for smaller particles of fertilizer and water stains that could originally pass through the sieve holes to fall normally, resulting in the inability to carry out the screening process smoothly, seriously reducing the screening efficiency, extending the time required for the entire detection process, improving the screening efficiency, ensuring accurate detection results, and extending the service life of the equipment. Step 2: When the movable rod 74 drives the dredging wheel 75 and the dredging block 76 to rotate, the dredging wheel 75 and the dredging block 76 are connected by the movable spring 82, and the contact ring 710 contacts the dredging wheel 75 and the dredging block 76 when they slide, causing the dredging wheel 75 to contact the outside of the connecting spring 84. The elasticity of the connecting spring 84 and the contact of the limiting ring 83 limit the movement of the dredging wheel 75 and the dredging block 76. When the movable rod 74 moves, it also drives the gear 1 85 on the surface to slide on the bottom of the rack 86. Since the rack 86 is meshing with the gear 1 85 When the gear 1 85 slides, it rotates synchronously. When in use, if there is no elasticity of the connecting spring 84 and the interference restriction of the limiting ring 83, the dredging wheel 75 and the dredging block 76 may be excessively displaced or even separated from the corresponding working position of the sieve plate 10 under the influence of the vibration generated by the operation of the equipment and the rotation and movement of the dredging wheel 75 and the dredging block 76 themselves, resulting in the inability to effectively dredge the sieve holes, so that the problem of sieve hole blockage cannot be solved, affecting the normal progress of the screening process, improving the stability of the dredging operation, and ensuring the reliability of the transmission system operation. Step 3: When gear 1 85 rotates, it also drives the rotation shaft 91 to rotate. When the rotation shaft 91 rotates, it drives the rotation of gear 2 92. When gear 2 92 rotates, since gear 2 92 is engaged with the outer side of the toothed disc 93, the toothed disc 93 will swing accordingly. The rotation of the toothed disc 93 is connected to the top of the movable block 94. The movable block 94 runs through the surface of the movable rod 74. The swing rod 95 fixed on the surface of the toothed disc 93 will swing with the rotation of the toothed disc 93. At the same time, the gear 3 96 on the top of the swing rod 95 will also rotate due to the engagement with the surface of the toothed disc 93. Gear 3 96 drives the bevel gear 1 97 at its bottom to rotate. The bevel gear 1 97 is engaged with the bevel gear 2 98, thereby driving the bevel gear 2 98 to rotate inside the swing rod 95. The rotation of the bevel gear 2 98 makes the screw fixed to it The rod 99 rotates, and the screw 99 drives the movable plate 910 to slide inside the swing rod 95 through a threaded connection. The movable plate 910 is slidably connected with an insert block 911, and the insert block 911 will be inserted into the inside of the screen plate 10 through a reset spring 912 to prevent the accumulation and uneven distribution of fertilizer on the screen plate. Without this series of transmission and related components, the fertilizer on the surface of the screen plate 10, especially larger particles or agglomerated fertilizer, will easily accumulate locally and cannot be effectively dispersed. This will cause the sieve holes of the sieve plate 10 to not be fully utilized, and the sieve holes in some areas will be covered by fertilizer for a long time, affecting the normal passage of small particles of fertilizer and water stains through the sieve holes, thereby reducing the screening efficiency and making the test results unable to accurately reflect the characteristics of the overall fertilizer, thereby improving the screening efficiency and detection accuracy.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A water-retaining slow-release fertilizer water absorption measuring instrument, comprising a body (1), characterized in that: A detector (2) is fixedly mounted inside the machine body (1), a vibration motor (6) is fixedly mounted on the outer wall of the machine body (1), a sieve plate (10) is fixedly mounted on the surface of the vibration shaft of the vibration motor (6), and the sieve plate (10) is movably connected to the inside of the machine body (1); It also includes a movable component (7) for clearing fertilizer blocked at the sieve holes of the sieve plate (10); A movable assembly (8) is used to ensure that the movable assembly (7) always adheres to the surface of the sieve plate (10) when the sieve plate (10) vibrates; A swing assembly (9) for scraping fertilizer on the surface of the screen plate (10); The movable assembly (7) comprises a telescopic cylinder (71), the telescopic cylinder (71) being fixedly mounted on the inner wall of the machine body (1), a fixed ring (72) being fixedly mounted on the surface of the telescopic cylinder (71), a slip ring (79) being slidably connected inside the fixed ring (72), a rotating shaft (73) being rotatably connected inside the slip ring (79), a movable rod (74) being slidably connected inside the rotating shaft (73), a dredging wheel (75) being provided on the surface of the movable rod (74), and a dredging block (76) being fixedly mounted on the surface of the dredging wheel (75).

2. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 1, characterized in that: The surface of the rotating shaft (73) is slidably connected to a sliding rod (77), a connecting plate (78) is fixedly mounted on the top of the sliding rod (77), the connecting plate (78) is fixedly mounted on the outer wall of the slip ring (79), a resisting ring (710) is fixedly mounted on the outer side of the connecting plate (78), and the resisting ring (710) is fixedly mounted on the surface of the movable rod (74).

3. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 1, characterized in that: The movable assembly (8) comprises a snap ring (81), the snap ring (81) being rotatably connected to the surface of the movable rod (74), a movable spring (82) being fixedly mounted on the outer side of the snap ring (81), and the dredging wheel (75) being fixedly mounted on the surface of the movable spring (82).

4. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 1, characterized in that: A limiting ring (83) is fixedly mounted on the surface of the movable rod (74), a connecting spring (84) is fixedly mounted on the inner side of the limiting ring (83), the connecting spring (84) is fixedly mounted on the surface of the movable rod (74), a gear 1 (85) is movably connected to the surface of the movable rod (74), a rack (86) is meshed at the top of the gear 1 (85), and the rack (86) is fixedly mounted on the inner wall of the body (1).

5. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 1, characterized in that: The swing assembly (9) comprises a rotating shaft (91), the rotating shaft (91) being fixedly mounted on the inner side of gear 1 (85), a gear 2 (92) being fixedly mounted on the surface of the rotating shaft (91), and a toothed disc (93) being meshed on the outer side of the gear 2 (92).

6. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 5, characterized in that: A movable block (94) is passed through the surface of the movable rod (74), the toothed disc (93) is rotatably connected to the top of the movable block (94), a volute spring (913) is fixedly mounted on the bottom of the toothed disc (93), and the volute spring (913) is fixedly mounted on the inner side of the movable block (94).

7. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 5, characterized in that: A swing rod (95) is fixedly mounted on the surface of the gear disc (93), a gear three (96) is fixedly mounted on the top of the swing rod (95), the gear three (96) is meshed with the surface of the gear disc (93), a bevel gear one (97) is fixedly mounted on the bottom of the gear three (96), the bevel gear one (97) is meshed with a bevel gear two (98) on the surface, the bevel gear two (98) is rotatably connected to the inside of the swing rod (95), a screw (99) is fixedly mounted on the surface of the bevel gear two (98), a movable plate (910) is threadedly connected to the surface of the screw (99), and the movable plate (910) is slidably connected to the inside of the swing rod (95).

8. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 7, characterized in that: An insert block (911) is slidably connected to the interior of the movable plate (910), a return spring (912) is fixedly mounted on the top of the insert block (911), and the return spring (912) is fixedly mounted inside the movable plate (910).

9. The water-retaining slow-release fertilizer water absorption measuring instrument according to claim 1, characterized in that: A reciprocating slide groove (730) is provided on the surface of the rotating shaft (73), a groove (100) is provided on the top of the screen plate (10), a feed block (3) is fixedly mounted on the top of the machine body (1), and a discharge plate (4) is fixedly mounted on the machine body (1), and the discharge plate (4) passes through the right side of the machine body (1).

10. A method for determining the water absorption of a water-retaining slow-release fertilizer, characterized in that: The water-retaining slow-release fertilizer water absorption measuring instrument according to any one of claims 1 to 9 further comprises the following steps: Step 1: The operator first feeds the material through the feed block (3) and starts the vibration motor (6). The vibration shaft of the vibration motor (6) drives the screen plate (10) to vibrate inside the machine body (1). Under the action of the vibration, the fertilizer starts to move on the screen plate (10). Smaller particles and water stains in the fertilizer will fall through the sieve holes of the sieve plate (10) and enter the detection frame (11) below, while larger particles or agglomerated fertilizers will remain on the surface of the sieve plate (10) and wait for further processing. When the sieve holes of the sieve plate (10) are blocked during the vibration process, the telescopic cylinder (71) of the movable component (7) is started. The telescopic cylinder (71) telescopes and drives the fixed ring (72) to move. When the fixed ring (72) moves, the movable rod (74) moves. When the movable rod (74) moves, the surface of the movable rod (74) is cleared by the wheel (75). The dredging block (76) is inserted into the interior of the sieve plate (10). Therefore, when the dredging wheel (75) moves, it will be resisted by the sieve plate (10), thereby driving the dredging wheel (75) to rotate through the movable rod (74). When the movable rod (74) rotates, it will drive the rotation of the rotating shaft (73). When the rotating shaft (73) rotates, it will resist the sliding rod (77) through the reciprocating groove (730) opened on its surface and slide back and forth. When the sliding rod (77) slides back and forth, it will drive the connecting plate (78) to slide back and forth. When the connecting plate (78) slides back and forth, the resisting ring (710) slides on the surface of the movable rod (74). When the resisting ring (710) slides, it will resist the outer wall of the dredging wheel (75), thereby driving the dredging wheel (75) and the dredging block (76) inserted into the interior of the sieve plate (10) to move back and forth through the movable rod (74); Step 2: When the movable rod (74) drives the dredging wheel (75) and the dredging block (76) to rotate, the dredging wheel (75) and the dredging block (76) are connected by the movable spring (82), and the contact ring (710) contacts the dredging wheel (75) and the dredging block (76) when they slide, causing the dredging wheel (75) to contact the outside of the connecting spring (84). The movement of the dredging wheel (75) and the dredging block (76) is restricted by the elasticity of the connecting spring (84) and the contact of the limiting ring (83). When the movable rod (74) moves, it also drives the gear 1 (85) on the surface to slide at the bottom of the rack (86). Since the rack (86) is engaged with the gear 1 (85), the gear 1 (85) rotates synchronously when it slides. Step 3: When gear 1 (85) rotates, it also drives the rotation shaft (91) to rotate. When the rotation shaft (91) rotates, it drives the rotation of gear 2 (92). When gear 2 (92) rotates, since gear 2 (92) is meshed with the outer side of the toothed disc (93), the toothed disc (93) will swing accordingly. The toothed disc (93) rotates and is connected to the top of the movable block (94). The movable block (94) runs through the surface of the movable rod (74). The swing rod (95) fixed on the surface of the toothed disc (93) will swing as the toothed disc (93) rotates. At the same time, the gear 3 (96) on the top of the swing rod (95) is engaged with the gear. The surface of the disk (93) is engaged and rotates, and the gear three (96) drives the bevel gear one (97) at its bottom to rotate. The bevel gear one (97) is engaged with the bevel gear two (98), thereby driving the bevel gear two (98) to rotate inside the swing rod (95). The rotation of the bevel gear two (98) causes the screw (99) fixed thereto to rotate. The screw (99) drives the movable plate (910) to slide inside the swing rod (95) through a threaded connection. The movable plate (910) is slidably connected to an insert block (911), and the insert block (911) is inserted into the inside of the screen plate (10) through a return spring (912).

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