A water-soluble fertilizer fertilizing device for agricultural planting

Abstract

The present invention relates to the technical field of water-soluble fertilizer fertilization, and discloses a water-soluble fertilizer fertilization device for agricultural planting, including a drip irrigation system, and the drip irrigation system has a drip irrigation pipeline, and also includes: a dissolving barrel, the dissolving barrel includes a liquid inlet pipe and a liquid outlet pipe located below; a water inlet pipe connected to an external water supply system, and the water inlet pipe, the liquid outlet pipe and the opposite end of the drip irrigation pipeline are connected through a three-way pipe, and a rotating column is installed inside the three-way pipe for rotation, and a switching channel is opened in the rotating column. The present invention alternately performs drip irrigation and pipeline flushing to flush and dissolve crystals or precipitations appearing in the drip irrigation pipeline, thereby achieving the effect of unblocking the drip irrigation pipeline, preventing the drip irrigation pipeline from being blocked due to crystals or precipitations appearing in an external low temperature environment, ensuring the fluidity in the drip irrigation pipeline during the drip irrigation process, and thus ensuring the efficiency of drip irrigation.

Description

Technical Field

[0001] The invention relates to the technical field of water-soluble fertilizer fertilization, in particular to a water-soluble fertilizer fertilization device for agricultural planting. Background Art

[0002] Water-soluble fertilizer is a multi-component compound fertilizer that can be dissolved in water. It has the characteristics of comprehensive nutrition, fast fertilizer effect and simple application method. It is usually applied by drip irrigation, watering and liquid surface fertilization.

[0003] Among them, when used by drip irrigation, such as Chinese patent CN218451160U, it discloses an irrigation and water-soluble fertilizer fertilization device for watermelon planting. The fertilization device dissolves the water-soluble fertilizer through a water tank, and then uses the height difference to introduce the aqueous solution from the connecting pipe into the drip irrigation pipe, and then drip irrigation is performed through the drip irrigation pipe, thereby realizing energy-saving irrigation and regulation of the equipment.

[0004] Another example is Chinese patent CN113207402B, which discloses a mountain tea garden fertilization irrigation system, which can improve the dilution efficiency and dissolution speed of water-soluble fertilizers through multiple mixing and dissolution, and then the dissolved aqueous solution is filtered and then drip-irrigated through a drip irrigation pipe;

[0005] Although the above two fertilization devices will be filtered before the water-soluble fertilizer solution enters the drip irrigation pipe to remove impurities therein to prevent clogging of the drip irrigation head, the drip irrigation pipes are generally laid in the ground in advance, so that the water-soluble fertilizer solution is easily affected by the external temperature when flowing in the pipe. When the temperature of the external environment decreases, the solubility of the water-soluble fertilizer in water will be reduced, resulting in precipitation or crystallization of the water-soluble fertilizer in the pipe. In addition, the flow rate in the drip irrigation pipe is slow, so the crystallization phenomenon will be more serious, but the water-soluble fertilizer solution cannot dissolve it again. Therefore, during the long-term drip irrigation process, it may affect the fluidity of the pipe, and if the crystals flow to the drip irrigation head with the solution, it may also cause clogging of the drip irrigation head, thereby affecting the efficiency of drip irrigation. Summary of the invention

[0006] The object of the present invention is to provide a water-soluble fertilizer fertilizing device for agricultural planting to solve at least one technical problem existing in the above-mentioned prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: a fertilizing device for water-soluble fertilizer for agricultural planting, comprising a drip irrigation system, and the drip irrigation system has a drip irrigation pipeline, and further comprises:

[0008] A dissolving tank, the dissolving tank comprising a liquid inlet pipe and a liquid outlet pipe located below;

[0009] A water inlet pipe connected to an external water supply system, wherein the water inlet pipe, the liquid outlet pipe and the opposite end of the drip irrigation pipe are connected through a tee pipe, a rotating column is rotatably installed inside the tee pipe, and a switching channel is opened in the rotating column;

[0010] A switching assembly, which can drive the rotating column to intermittently reciprocate and connect the drip irrigation pipe with the liquid outlet pipe or the water inlet pipe through the switching channel;

[0011] The detection component is connected to the switching component by electrical signals. The detection component is used to detect the fertilizer concentration of the solution in the dissolution barrel and control the pause time of the rotating column in intermittent rotation according to the concentration. The concentration is designed to be proportional to the pause time.

[0012] Preferably, the switching assembly comprises a mounting plate fixed on the supporting leg of the dissolving barrel, a connecting shaft is coaxially fixed to the outer wall of the rotating column, and one end of the connecting shaft passing through the three-way pipe is rotatably connected to the outer wall of the mounting plate, a swing rod is fixed to the outer wall of the connecting shaft, and one end of the swing rod is set to an open shape, and a pin is fixed in the opening part, and the outer walls of the mounting plate located on both sides of the swing rod are fixed with limit pins for limiting the swing rod;

[0013] The switching assembly also includes a switching rod and a fixed block fixed to the outer wall of the mounting plate, the outer wall of the fixed block is provided with an arc groove, one end of the switching rod is provided with an arc head, and the arc head is in contact with the arc groove, the other end of the switching rod is provided with a slide groove, and the pin shaft extends into the slide groove and is in sliding contact with the slide groove, the outer wall of the switching rod is slidably provided with a sliding ring, and a spring is connected between the sliding ring and the fixed ring on the outer wall of the switching rod;

[0014] The switching assembly also includes a driving member for driving the swing rod to swing back and forth.

[0015] Preferably, the driving member includes a rotating rod rotatably mounted on the outer wall of the mounting plate, and the outer wall of the mounting plate is also equipped with a servo motor for driving the rotating rod to reciprocate, a curved plate is fixed to the end of the rotating rod, and a plurality of retractable telescopic rods are installed on both sides of the curved plate, the telescopic rods located on both sides of the curved plate are symmetrically distributed about the curved plate, and the detection component is used to control the extension or retraction of the corresponding telescopic rods.

[0016] Preferably, a filter is fixed to the inner wall of the dissolving barrel, a through hole is opened in the center of the filter, and a rotating shaft is rotatably installed between the through hole and the inner top of the dissolving barrel, a stirring blade is fixed to the outer wall of the rotating shaft, and a transmission wheel is fixed to the top of the rotating shaft extending out of the dissolving barrel, and the transmission wheel is driven by an external driving device.

[0017] Preferably, the detection component includes a detection meter, a section of the rotating shaft near the top is set as a thickened portion, and a liquid suction channel is opened inside the rotating shaft and the thickened portion. The detection meter is installed on the inner wall of the liquid suction channel at the connection between the thickened portion and the rotating shaft through a bracket, and a piston block is installed on the inner wall of the liquid suction channel in the thickened portion, and the piston block can slide and rotate in the liquid suction channel, and a piston rod passing through the top of the rotating shaft is fixed on the top of the piston block, and the piston rod is driven to rise and fall by an external telescopic cylinder.

[0018] Preferably, the stirring blades are arranged on the outer wall of the rotating shaft above and below the filter screen, and the stirring blades are configured as oblique sloped fins.

[0019] Preferably, an embedding groove is provided on the inner wall of one side of the arc groove, and a trigger switch is installed in the embedding groove, and the trigger switch is connected to the switch electrical signal of the external water supply system.

[0020] Preferably, the inner diameters of the liquid outlet pipe and the water inlet pipe are both larger than the inner diameter of the drip irrigation pipe, and the inner diameter of the switching channel is the same as the inner diameter of the drip irrigation pipe.

[0021] Preferably, the inner diameter of the liquid suction channel in the thickened portion is larger than the inner diameter of the liquid suction channel in the rotating shaft.

[0022] Preferably, the detection end of the detector extends into a liquid aspiration channel located in the rotating shaft, and a ventilation gap is provided between the detector and the liquid aspiration channel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention can alternately perform drip irrigation and pipeline flushing by reciprocating the rotating column, so as to flush and dissolve the crystals or precipitations in the drip irrigation pipeline, thereby achieving the effect of unblocking the drip irrigation pipeline, preventing the drip irrigation pipeline from being blocked by crystals or precipitations in the external low temperature environment, ensuring the fluidity in the drip irrigation pipeline during the drip irrigation process, and thus ensuring the efficiency of the drip irrigation;

[0025] 2. The present invention detects the concentration of the fertilizer solution in the dissolution barrel by setting a detection component, and can control the pause time of the rotating column according to the concentration, that is, control the connection time between the water inlet pipe and the drip irrigation pipe, so as to completely remove and dissolve the crystals in the drip irrigation pipe, thereby ensuring the smoothness of the fertilizer solution circulation in the drip irrigation pipe and ensuring the drip irrigation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 It is a left side view of the present invention;

[0028] Figure 3 For the present invention Figure 2 Sectional view along AA;

[0029] Figure 4 For the present invention Figure 3 The enlarged view of point B in the figure;

[0030] Figure 5 For the present invention Figure 4 Cutaway stereograms and partial magnified diagrams from different viewing angles;

[0031] Figure 6 It is an enlarged view of the mounting plate of the present invention and the structure thereon;

[0032] Figure 7 A partial cross-sectional view of the swing arm of the present invention;

[0033] Figure 8 For the present invention Figure 7 Cutaway stereogram of perspective;

[0034] Fig. 9 This is a schematic diagram of the structure in which the telescopic rod of the present invention is only arranged on one side.

[0035] In the figure: 1. dissolving barrel; 2. liquid inlet pipe; 3. liquid outlet pipe; 4. water inlet pipe; 5. drip irrigation pipe; 6. mounting plate; 7. rotating column; 8. switching channel; 9. connecting shaft; 10. swing rod; 11. pin shaft; 12. limit pin; 13. switching rod; 14. slide groove; 15. spring; 16. arc head; 17. fixing block; 18. arc groove; 19. trigger switch; 20. rotating rod; 21. curved plate; 22. telescopic rod; 23. filter screen; 24. rotating shaft; 25. thickened part; 26. liquid suction channel; 27. detector; 28. piston block; 29. ​​piston rod; 30. stirring blade; 31. three-way pipe; 32. sliding ring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 9 The present invention provides a technical solution: a water-soluble fertilizer fertilizing device for agricultural planting, including a drip irrigation system, and the drip irrigation system has a drip irrigation pipeline 5, and also includes:

[0038] A dissolving tank 1, comprising a liquid inlet pipe 2 and a liquid outlet pipe 3 located below;

[0039] A water inlet pipe 4 is connected to an external water supply system, and the opposite ends of the water inlet pipe 4, the liquid outlet pipe 3 and the drip irrigation pipe 5 are connected through a tee pipe 31, a rotating column 7 is rotatably installed inside the tee pipe 31, and a switching channel 8 is opened in the rotating column 7;

[0040] A switching assembly, which can drive the rotating column 7 to intermittently reciprocate and connect the drip irrigation pipe 5 with the liquid outlet pipe 3 or the water inlet pipe 4 through the switching channel 8;

[0041] The detection component is connected to the switching component by electrical signals. The detection component is used to detect the fertilizer concentration of the solution in the dissolving barrel 1, and control the pause time of the rotating column 7 in the intermittent rotation according to the concentration, and the concentration is designed to be proportional to the pause time.

[0042] When the fertilizing device is in use, the water-soluble fertilizer and water are mixed through the dissolving barrel 1 to prepare a fertilizer solution of the water-soluble fertilizer, which is hereinafter referred to as the fertilizer solution. After the mixing is prepared, the rotating column 7 is driven to rotate by the switching component, and the liquid outlet pipe 3 and the drip irrigation pipe 5 are connected through the switching channel 8, so that the fertilizer solution can enter the drip irrigation system for drip irrigation fertilization;

[0043] After a period of drip irrigation and fertilization, the switching component drives the rotating column 7 to rotate, and the water inlet pipe 4 is connected to the drip irrigation pipe 5 through the switching channel 8, so that the drip irrigation pipe 5 is connected to the external water supply system, and the liquid outlet pipe 3 is closed at the same time, and then water is introduced into the water inlet pipe 4 and the drip irrigation pipe 5 through the water supply system to flush and dissolve the crystals or precipitations in the drip irrigation pipe 5, so as to achieve the effect of unblocking the drip irrigation pipe 5, prevent the drip irrigation pipe 5 from being blocked due to crystals or precipitations in the external low temperature environment, ensure the fluidity in the drip irrigation pipe 5 during the drip irrigation process, and then ensure the efficiency of drip irrigation;

[0044] After a period of water flushing, the driving assembly drives the rotating column 7 to reset and rotate, so that the liquid outlet pipe 3 is connected to the drip irrigation pipe 5 again, and drip irrigation and fertilization are continued. In this way, the reciprocating rotation of the rotating column 7 can alternately carry out drip irrigation and pipeline flushing, ensuring smooth fertilization during the drip irrigation process;

[0045] It is worth mentioning that the amount of crystallization in the drip irrigation pipe 5 due to low-temperature crystallization is related to the concentration of the fertilizer solution, that is, the higher the concentration of the fertilizer solution, the more crystals are precipitated, and the flushing time of the water supply system on the drip irrigation pipe 5 is also related to the flushing degree of the crystals in the drip irrigation pipe 5, that is, the more crystals in the drip irrigation pipe 5, the longer the flushing time is required. Therefore, by setting a detection component to detect the concentration of the fertilizer solution in the dissolution barrel 1, the pause time of the rotating column 7 can be controlled by the concentration, that is, the connection time between the water inlet pipe 4 and the drip irrigation pipe 5 is controlled, so as to completely remove and dissolve the crystals in the drip irrigation pipe 5, thereby ensuring the smoothness of the circulation of the fertilizer solution in the drip irrigation pipe 5 and ensuring the drip irrigation efficiency.

[0046] In one of the more preferred embodiments, an implementation of a switching component is provided, which can be specifically referred to in Figure 6 and Figure 7 ;

[0047] The switching assembly includes a mounting plate 6 fixed on the supporting leg of the dissolving barrel 1, a connecting shaft 9 is coaxially fixed to the outer wall of the rotating column 7, and one end of the connecting shaft 9 passing through the three-way pipe 31 is rotatably connected to the outer wall of the mounting plate 6, a swing rod 10 is fixed to the outer wall of the connecting shaft 9, and one end of the swing rod 10 is set to an open shape, and a pin shaft 11 is fixed in the opening part, and the outer walls of the mounting plate 6 located on both sides of the swing rod 10 are fixed with limit pins 12 for limiting the swing rod 10;

[0048] The switching assembly also includes a switching rod 13 and a fixing block 17 fixed to the outer wall of the mounting plate 6. The outer wall of the fixing block 17 is provided with an arc groove 18. One end of the switching rod 13 is provided with an arc head 16, and the arc head 16 contacts and abuts against the arc groove 18. The other end of the switching rod 13 is provided with a slide groove 14, and the pin shaft 11 extends into the slide groove 14 and slides in contact with it. A sliding ring 32 is slidably installed on the outer wall of the switching rod 13, and a spring 15 is connected between the sliding ring 32 and the fixing ring on the outer wall of the switching rod 13.

[0049] The switching assembly also includes a driving member for driving the swing lever 10 to swing back and forth.

[0050] When the rotating column 7 is switched, the driving member drives the swing rod 10 to rotate, and the swing rod 10 drives the rotating column 7 to rotate through the connecting shaft 9 at the same time, so as to achieve the effect of reciprocating rotation switching of the rotating column 7;

[0051] In order to ensure that the rotating column 7 remains in a stopped state after the rotation adjustment so as to ensure that the switching channel 8 connects the drip irrigation pipe 5 with the liquid outlet pipe 3 or the water inlet pipe 4, the switching rod 13 will be driven to rotate through the pin shaft 11 while the swing rod 10 rotates, and the pin shaft 11 will slide along the slide groove 14 and press the sliding ring 32 to compress the spring 15. When the swing rod 10 rotates to cross the same straight line as the switching rod 13, the switching rod 13 will rotate in the opposite direction under the elastic force of the spring 15, so that the arc head 16 slides from one side of the arc groove 18 to the other side, and the limit pin 12 limits the rotation of the swing rod 10 to complete the switching process;

[0052] Similarly, when the reset rotation is performed, the swing rod 10 rotates in the opposite direction, and the above structure completes the reset. The principle is the same and will not be described again.

[0053] It is worth mentioning that the spring 15 is always in a compressed state, so that the elastic force of the spring 15 can be used to enable the sliding ring 32 to apply an upward supporting force to the pin shaft 11, so that the swing rod 10 is tightly attached to the limit pin 12 after the swing switching, and the elastic force is used to keep it in a stable static state, thereby ensuring the stable state of the rotating column 7 after the rotation adjustment.

[0054] In one of the more preferred embodiments, an implementation of a driving member is provided, which can be specifically referred to in Figure 7-8 ;

[0055] The driving member includes a rotating rod 20 rotatably mounted on the outer wall of the mounting plate 6, and a servo motor for driving the rotating rod 20 to reciprocate is also mounted on the outer wall of the mounting plate 6. A curved plate 21 is fixed to the end of the rotating rod 20, and a plurality of retractable telescopic rods 22 are mounted on both sides of the curved plate 21. The telescopic rods 22 located on both sides of the curved plate 21 are symmetrically distributed about the curved plate 21, and the detection component is used to control the corresponding telescopic rods 22 to extend or retract.

[0056] When switching, the servo motor is used to drive the rotating rod 20 to rotate back and forth, thereby driving the curved plate 21 to rotate back and forth, and the telescopic rod 22 extending therefrom is used to drive the swing rod 10 to rotate, and the telescopic rods 22 located on both sides of the curved plate 21 are symmetrically distributed and extended or retracted at the same time;

[0057] like Figure 8 As shown in the figure, the symmetrical telescopic rods 22 are extended at the same time, and the corresponding rotation range of the two is Figure 7The range shown by a1 in the figure, and the range shown by a2-a5 in the other groups of telescopic rods 22 are similarly corresponding to the range shown by a2-a5, and the range gradually increases. In this way, when the reciprocating rotation speed of the rotating rod 20 is constant, the telescopic rod 22 that is farther away from the rotating rod 20 will contact the swing rod 10 later, so that the swing gap of the swing rod 10 is longer, thereby making the stop time of the rotating column 7 longer, and thus making the connection time between the water inlet pipe 4 and the drip irrigation pipe 5 long enough. When the detection component detects that the concentration of the fertilizer solution is higher, the telescopic rod that is farther away from the rotating rod 20 will be controlled to extend;

[0058] It is worth mentioning that it is also possible to set the telescopic rod 22 on only one side, that is, Fig. 9 As shown, compared with the above-mentioned symmetrical setting, the unilateral setting can only make the telescopic rod 22 rotate when the swing rod 10 is toggled, and prolong the pause time when the switching channel 8 is connected with the water inlet pipe 4, while the pause time when the switching channel 8 is connected with the liquid outlet pipe 3 will not change.

[0059] The telescopic rod 22 can be electrically controlled for telescopic control, which can be specifically implemented in an existing manner, so it will not be described in detail.

[0060] In one of the more preferred embodiments, a filter screen 23 is fixed to the inner wall of the dissolving barrel 1, a through hole is opened in the center of the filter screen 23, and a rotating shaft 24 is rotatably installed between the through hole and the inner top of the dissolving barrel 1, a stirring blade 30 is fixed to the outer wall of the rotating shaft 24, and a transmission wheel is fixed to the top of the rotating shaft 24 extending out of the dissolving barrel 1, and the transmission wheel is driven by an external driving device.

[0061] After the water-soluble fertilizer particles and water are injected into the dissolution barrel 1, the transmission wheel is driven to rotate by an external driving device, thereby driving the rotating shaft 24 to rotate, and then the stirring blade 30 stirs the aqueous solution in the dissolution barrel 1, so that the water-soluble fertilizer particles can be fully dissolved and mixed with the water;

[0062] The mixed fertilizer solution is filtered through the filter screen 23 to remove impurities and then discharged through the liquid outlet pipe 3 for subsequent drip irrigation process to prevent impurities from directly entering the drip irrigation system.

[0063] In one of the more preferred embodiments, an implementation of a detection component is provided, which can be specifically referred to in Figure 4-5 ;

[0064] The detection component includes a detection meter 27. A section of the rotating shaft 24 near the top is set as a thickened portion 25. A liquid suction channel 26 is opened inside the rotating shaft 24 and the thickened portion 25. The detection meter 27 is installed on the inner wall of the liquid suction channel 26 at the connection between the thickened portion 25 and the rotating shaft 24 through a bracket. A piston block 28 is installed on the inner wall of the liquid suction channel 26 located in the thickened portion 25, and the piston block 28 can slide and rotate in the liquid suction channel 26. A piston rod 29 that passes through the top of the rotating shaft 24 is fixed to the top of the piston block 28, and the piston rod 29 is driven to rise and fall by an external telescopic cylinder.

[0065] After the above-mentioned fertilizer solution is dissolved, the piston rod 29 and the piston block 28 are driven by an external telescopic cylinder to move upward and adjust, and at the same time, the fertilizer solution is sucked upward from the liquid suction channel 26 until its liquid level is above the detector 27. The concentration of the fertilizer solution can be detected by the detector 27, among which a conductivity meter is preferably used, that is, by detecting the conductivity in the fertilizer solution, a conductivity test is provided to measure the ion concentration and type in the fertilizer solution, thereby reflecting the concentration of the fertilizer solution. Specifically, the corresponding conductivity meter can be selected according to different types of fertilizer solutions.

[0066] After the test, the telescopic cylinder drives the piston rod 29 and the piston block 28 to move downward to squeeze the fertilizer solution back into the dissolution barrel 1. It is worth mentioning that during the mixing process of the fertilizer solution, the air column in the suction channel 26 can prevent the fertilizer solution from entering in advance, so as to ensure that the fertilizer solution sucked up during the test is a uniformly mixed solution, thereby further ensuring the accuracy of the test result.

[0067] In one of the more preferred embodiments, the stirring blades 30 are disposed on the outer wall of the rotating shaft 24 above and below the filter screen 23, and the stirring blades 30 are configured as oblique inclined fins.

[0068] See also Figure 3 The arrangement of the inclined fins of the stirring blade 30 can exert an upward rolling effect on the solution when it rotates, so that the upper and lower layers of solution can flow fully between each other, preventing the upper and lower layers of solution from being unevenly dissolved. In addition, the stirring blade 30 below the filter screen 23 can also play a certain recoil effect on the filter screen 23 when pushing the solution to roll upward, so as to prevent it from being blocked.

[0069] In one of the more preferred embodiments, an embedding groove is provided on the inner wall of one side of the arc groove 18, and a trigger switch 19 is installed in the embedding groove. The trigger switch 19 is connected to the switch electrical signal of the external water supply system.

[0070] See also Figure 3From the above content, it can be known that during the rotation and switching process of the rotating column 7, the arc head 16 will also slide and switch in the arc groove 18. When the switching channel 8 causes the drip irrigation pipe 5 to be connected and staggered with the water inlet pipe 4, the arc head 16 will also trigger the switch 19 to contact, thereby controlling the external water supply system to close and stop water supply to reduce the water pressure in the water inlet pipe 4.

[0071] In one of the more preferred embodiments, the inner diameters of the liquid outlet pipe 3 and the water inlet pipe 4 are both larger than the inner diameter of the drip irrigation pipe 5 , and the inner diameter of the switching channel 8 is the same as the inner diameter of the drip irrigation pipe 5 .

[0072] By setting the inner diameter of the liquid outlet pipe 3 to be larger than the inner diameter of the drip irrigation pipe 5, a certain pressure can be ensured in the drip irrigation pipe 5, and air can be prevented from entering the drip irrigation pipe 5, thereby ensuring the flow of water in the drip irrigation pipe 5. By setting the inner diameter of the water inlet pipe 4 to be larger than the inner diameter of the drip irrigation pipe 5, the water pressure in the drip irrigation pipe 5 can be ensured when flushing with water, thereby further improving the flushing effect and efficiency.

[0073] In one of the more preferred embodiments, the inner diameter of the suction channel 26 located in the thickened portion 25 is larger than the inner diameter of the suction channel 26 in the rotating shaft 24, the detection end of the detector 27 extends into the suction channel 26 located in the rotating shaft 24, and there is a ventilation gap between the detector 27 and the suction channel 26.

[0074] See also Figure 4 By setting the inner diameter, the above-mentioned piston block 28 can quickly absorb the solution in the liquid suction channel 26 when it moves upward. Moreover, the most important thing is that when the piston block 28 moves downward, a pressure difference will be formed in the liquid suction channel 26 with a larger inner diameter and the liquid suction channel 26 with a smaller inner diameter, so that the air can flow faster when flowing through the ventilation gap. In this way, the high-speed airflow formed can be used to blow away the residual solution on the detection meter 27 to ensure the cleanliness of the surface of the detection meter 27 and avoid affecting the subsequent detection results.

[0075] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fertilizing device for water-soluble fertilizer for agricultural planting, comprising a drip irrigation system, wherein the drip irrigation system has a drip irrigation pipe (5), characterized in that: Also includes: A dissolving barrel (1), the dissolving barrel (1) comprising a liquid inlet pipe (2) and a liquid outlet pipe (3) located below; A water inlet pipe (4) connected to an external water supply system, wherein the water inlet pipe (4), the liquid outlet pipe (3) and the opposite end of the drip irrigation pipe (5) are connected via a tee pipe (31), a rotating column (7) is rotatably mounted inside the tee pipe (31), and a switching channel (8) is provided inside the rotating column (7); A switching assembly, wherein the switching assembly can drive the rotating column (7) to intermittently reciprocate and connect the drip irrigation pipe (5) with the liquid outlet pipe (3) or the water inlet pipe (4) through the switching channel (8); A detection component connected to the switching component by electrical signals, the detection component is used to detect the fertilizer concentration of the solution in the dissolving barrel (1), and to control the pause time of the rotating column (7) in the intermittent rotation according to the concentration, and the concentration is designed to be proportional to the pause time; The switching assembly comprises a mounting plate (6) fixed on a supporting leg of the dissolving barrel (1); a connecting shaft (9) is coaxially fixed to the outer wall of the rotating column (7); and one end of the connecting shaft (9) passing through the three-way pipe (31) is rotatably connected to the outer wall of the mounting plate (6); a swing rod (10) is fixed to the outer wall of the connecting shaft (9); and one end of the swing rod (10) is set to be open, and a pin shaft (11) is fixed in the opening part; and the outer walls of the mounting plate (6) located on both sides of the swing rod (10) are fixed with limit pins (12) for limiting the swing rod (10); The switching assembly further comprises a switching rod (13) and a fixing block (17) fixed to the outer wall of the mounting plate (6); an arc groove (18) is provided on the outer wall of the fixing block (17); one end of the switching rod (13) is provided with an arc head (16), and the arc head (16) contacts and abuts against the arc groove (18); the other end of the switching rod (13) is provided with a sliding groove (14), and the pin shaft (11) extends into the sliding groove (14) and contacts and slides therewith; a sliding ring (32) is slidably installed on the outer wall of the switching rod (13), and a spring (15) is connected between the sliding ring (32) and the fixing ring on the outer wall of the switching rod (13); The switching assembly also includes a driving member for driving the swing rod (10) to swing back and forth.

2. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 1, characterized in that: The driving member comprises a rotating rod (20) rotatably mounted on the outer wall of the mounting plate (6), and a servo motor for driving the rotating rod (20) to reciprocate is also mounted on the outer wall of the mounting plate (6), a curved plate (21) is fixed to the end of the rotating rod (20), a plurality of telescopic rods (22) capable of retracting are mounted on both sides of the curved plate (21), the telescopic rods (22) located on both sides of the curved plate (21) are symmetrically distributed with respect to the curved plate (21), and the detection assembly is used to control the corresponding telescopic rods (22) to extend or retract.

3. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 1 is characterized in that: A filter screen (23) is fixed to the inner wall of the dissolving barrel (1), a through hole is opened at the center of the filter screen (23), and a rotating shaft (24) is rotatably installed between the through hole and the inner top of the dissolving barrel (1), a stirring blade (30) is fixed to the outer wall of the rotating shaft (24), and a transmission wheel is fixed to the top of the rotating shaft (24) extending out of the dissolving barrel (1), and the transmission wheel is driven by an external driving device.

4. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 3 is characterized in that: The detection assembly comprises a detection meter (27), a section of the rotating shaft (24) near the top is set as a thickened portion (25), and the rotating shaft (24) and the thickened portion (25) are both provided with a liquid suction channel (26), the detection meter (27) is installed on the inner wall of the liquid suction channel (26) at the connection between the thickened portion (25) and the rotating shaft (24) through a bracket, a piston block (28) is installed on the inner wall of the liquid suction channel (26) located in the thickened portion (25), and the piston block (28) can slide and rotate in the liquid suction channel (26), and a piston rod (29) passing through the top of the rotating shaft (24) is fixed on the top of the piston block (28), and the piston rod (29) is driven to rise and fall by an external telescopic cylinder.

5. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 3 is characterized in that: The stirring blades (30) are arranged on the outer wall of the rotating shaft (24) above and below the filter screen (23), and the stirring blades (30) are arranged as oblique inclined fins.

6. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 1, characterized in that: An embedding groove is provided on the inner wall of one side of the arc groove (18), and a trigger switch (19) is installed in the embedding groove. The trigger switch (19) is connected to a switch electrical signal of an external water supply system.

7. The water-soluble fertilizer fertilizing device for agricultural planting according to any one of claims 1 to 6, characterized in that: The inner diameters of the liquid outlet pipe (3) and the water inlet pipe (4) are both larger than the inner diameter of the drip irrigation pipe (5), and the inner diameter of the switching channel (8) is the same as the inner diameter of the drip irrigation pipe (5).

8. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 4, characterized in that: The inner diameter of the liquid suction channel (26) in the thickened portion (25) is greater than the inner diameter of the liquid suction channel (26) in the rotating shaft (24).

9. The water-soluble fertilizer fertilizing device for agricultural planting according to claim 8, characterized in that: The detection end of the detection meter (27) extends into the liquid suction channel (26) located in the rotating shaft (24), and a ventilation gap is provided between the detection meter (27) and the liquid suction channel (26).

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