Liquid fertilizer preparation method and equipment

Abstract

The invention relates to liquid fertilizer preparation equipment and method, and belongs to the technical field of liquid fertilizer preparation equipment. Comprising a box body, the interior of the box body is divided into a plurality of storage cavities through a plurality of partition plates from top to bottom, the partition plates are horizontally arranged, the middle of the box body is rotationally connected with a material collecting pipe penetrating through the multiple cavities, the material collecting pipe is vertically arranged and sequentially penetrates through the multiple partition plates, and the bottom faces of the partition plates are fixedly connected with sealing plates with L-shaped cross sections and annularly extending around the material collecting pipe; the sealing plate, the partition plate and the outer wall of the material collecting pipe are matched to form an annular transfer cavity, feeding holes communicated with the transfer cavity are formed in the side wall, corresponding to the transfer cavity, of the material collecting pipe, a quantitative extrusion mechanism is arranged in the transfer cavity, a spraying pipe communicated with the material collecting pipe is arranged at the bottom of the box body, a feeding opening is formed in the box body corresponding to each storage cavity, and a sealing cover is arranged on each feeding opening. Through the liquid fertilizer proportioning device, the problems that in the prior art, liquid fertilizer proportioning equipment is high in manufacturing cost, and small-sized and continuous self-service proportioning cannot be achieved are solved.

Description

Technical Field

[0001] The invention relates to a liquid fertilizer configuration device and a method, belonging to the technical field of liquid fertilizer configuration devices. Background Art

[0002] Liquid fertilizer, also known as fluid compound fertilizer, is easier to be absorbed by plants than traditional fixed compound fertilizer. In order to meet the elements required for plant growth, a variety of fertilizers or pesticides need to be mixed through a mixing device to meet actual needs. Most of the existing liquid fertilizer and pesticide mixing devices use a method of adding various fertilizers or pesticides in proportion to a fixed mixing container and then mixing them.

[0003] After searching, a Chinese patent with publication number CN103621235B discloses a formula liquid fertilizer preparation system and preparation method, and its technical points are: including a flow meter, a raw material tank, a mixer, a liquid level meter, a filter, a metering pump, a mixing barrel, a solenoid valve, a fertilizer injector, a one-way valve and a programmable controller, the irrigation pipeline is connected to the raw material tank through the solenoid valve and the flow meter, the raw material tank is connected to the mixing barrel through the solenoid valve, the filter and the metering pump, the mixing barrel is connected to the irrigation pipeline through the fertilizer injector and the one-way valve, and each of the flow meter, metering pump, mixer, liquid level meter, solenoid valve, and fertilizer injector is electrically connected to the programmable controller respectively.

[0004] The above scheme has the advantages of automated operation, saving labor costs, saving fertilizers, improving fertilizer utilization, preventing soil pollution, and improving product yield and quality. However, the equipment is expensive and cannot achieve small-scale, continuous self-service proportioning.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a liquid fertilizer configuration device and method, which solves the problem that the liquid fertilizer proportioning equipment in the prior art is expensive and cannot realize miniaturized and continuous self-service proportioning.

[0007] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0008] A liquid fertilizer configuration device comprises a box body, wherein the box body is divided into a plurality of storage chambers from top to bottom by a plurality of partitions, the partitions are arranged horizontally, a collecting pipe which penetrates a plurality of chambers is rotatably connected to the middle of the box body, the collecting pipe is arranged vertically, the collecting pipe passes through a plurality of the partitions in sequence, a sealing plate which has an L-shaped cross section and extends in a ring shape around the collecting pipe is fixedly connected to the bottom surface of the partition, the sealing plate, the partition and the outer wall of the collecting pipe cooperate to form an annular transfer chamber, the side walls of the collecting pipe corresponding to the transfer chamber are provided with feed holes connected to the transfer chamber, a quantitative extrusion mechanism for transferring liquid in the storage chamber to the collecting pipe is arranged in the transfer chamber, a nozzle connected to the collecting pipe is arranged at the bottom of the box body, a feed port is arranged in the box body corresponding to each of the storage chambers, and a sealing cover is arranged on the feed port.

[0009] The present invention is further configured as follows: the quantitative extrusion mechanism includes a fixed plate fixedly connected to the inner wall of the transfer chamber, a movable plate slidably connected to the transfer chamber, a baffle slidably connected to the transfer chamber and located on the side of the movable plate away from the fixed plate, a telescopic cylinder whose two ends are respectively fixedly connected to the fixed plate and the movable plate, a return spring arranged in the telescopic cylinder and whose two ends are respectively abutted against the fixed plate and the movable plate, a first one-way valve installed on the fixed plate, and a second one-way valve installed on the movable plate, the first one-way valve and the second one-way valve are both connected to the telescopic cylinder, the flow direction of the first one-way valve is toward the telescopic cylinder, and the flow direction of the second one-way valve is toward the movable plate, a drainage pipe is connected to the fixed plate, one end of the drainage pipe is connected to the storage chamber above, and the other end of the drainage pipe is connected to the telescopic cylinder, an adjusting member for adjusting the position of the baffle is provided on the sealing plate, and a toggle member for pushing the movable plate is provided on the outer wall of the collecting pipe corresponding to the transfer chamber.

[0010] The present invention is further configured as follows: the adjusting member includes an adjusting ring rotatably connected to the bottom of the sealing plate, an adjusting worm wheel fixedly connected to the outer wall of the adjusting ring, and an adjusting worm rotatably supported in the box body and meshing with the adjusting worm wheel; a movable groove connected to the transfer chamber and extending circumferentially along the transfer chamber is provided at the bottom of the sealing plate; the bottom of the baffle passes through the movable groove and is connected to the adjusting ring; one end of the adjusting worm wheel passes through the box body and is fixedly connected to a knob.

[0011] The present invention is further configured as follows: the shifting member includes a receiving groove opened on the side wall of the collecting pipe, a shifting block hinged at one end to the receiving groove, and a supporting spring fixedly connected between the inner wall of the receiving groove and the shifting block, the supporting spring applies a force to the shifting block in the rotation direction of the collecting pipe and keeps the shifting block in an extended state, and a notch is opened on the side of the baffle close to the collecting pipe for the shifting block to pass through.

[0012] The present invention is further configured as follows: a portion of the side wall of the collecting pipe located on the side of the shift block away from the receiving groove is fixedly connected with a magnetic block, the shift block is made of magnetic material, and when the shift block extends out of the receiving groove, the shift block is adsorbed on the magnetic block.

[0013] The present invention is further configured as follows: a closing block is provided on the notch, a side edge of the closing block close to the movable plate is hinged to the inner side of the notch, a tension spring is provided between the surface of the closing block away from the collecting pipe and the inner wall of the notch, and the closing block closes the notch in the absence of external force.

[0014] The present invention is further configured as follows: the quantitative extrusion mechanism is evenly distributed in at least two groups around the circumference of the transfer chamber, the top and bottom surfaces of the transfer chamber are fixedly connected with guide belts extending in a ring shape around the collecting pipe, and the top and bottom of the movable plate and the baffle are provided with guide grooves for sliding connection with the guide belts.

[0015] The present invention is further configured as follows: the top of the collecting pipe is sealed and extends to the outside of the box body, and the part of the top of the collecting pipe located outside the box body is fixedly connected to a driving worm gear, and the top of the box body is rotatably supported by a shaft seat to support a driving worm engaged with the driving worm gear, and one end of the driving worm gear is connected to a driving motor.

[0016] The present invention is further configured such that a rotary seal is provided between the partition plate and the outer wall of the collecting pipe and between the sealing plate and the outer wall of the collecting pipe.

[0017] A liquid fertilizer preparation method comprises the following steps:

[0018] S1. Prepare several liquid fertilizers or pesticides with fixed concentrations, and pour each different liquid fertilizer or pesticide into the storage chamber through the feed inlet;

[0019] S2. Turn the worm by the knob to make the adjusting ring drive the baffle to move, adjust the position of the baffle in the transfer chamber, limit the maximum movable stroke of the moving plate, and thus adjust the extrusion amount of the telescopic cylinder when the collecting pipe rotates one circle;

[0020] S3, start the driving motor, so that the collecting pipe drives the toggle pieces corresponding to each transfer chamber respectively, when the toggle piece pushes the movable plate to move toward the fixed plate, the solution in the telescopic cylinder is squeezed out through the second one-way valve, when the movable plate abuts against the fixed plate, the toggle block is retracted into the receiving groove, the movable plate moves toward the baffle plate under the action of the return spring, the solution in the storage chamber is sucked into the telescopic cylinder through the first one-way valve, and the solution between the movable plate and the baffle plate is squeezed into the collecting pipe;

[0021] S4. Each solution extruded quantitatively is combined in a collecting pipe and configured into the required liquid fertilizer after being rotated and mixed.

[0022] The beneficial effects of the present invention are:

[0023] 1. A plurality of storage chambers are provided to store different kinds of fertilizers. When it is necessary to configure various fertilizers, the knobs corresponding to the storage chambers are rotated, and the position of the baffle in the transfer chamber is adjusted by adjusting the cooperation between the worm gear and the adjusting worm and the worm, so as to limit the maximum movement stroke of the movable plate. At this time, the driving motor is started, and the collecting pipe starts to rotate under the cooperation of the driving worm gear and the driving worm. When the collecting pipe rotates, the shifting block connected to the collecting pipe passes through the notch of the baffle and pushes the movable plate to move toward the fixed plate, so that the solution in the telescopic cylinder is extruded into the transfer chamber, and the solution is extruded through the second one-way valve. When the movable plate abuts against the fixed plate, the shifting block is recovered into the receiving groove, and the movable plate moves toward the baffle under the action of the return spring, and the solution in the storage chamber is sucked into the telescopic cylinder through the first one-way valve, and the solution between the movable plate and the baffle is squeezed into the collecting pipe. Each solution that has been quantitatively extruded is merged in the collecting pipe, and is configured into the required liquid fertilizer after rotating and mixing.

[0024] 2. By arranging a magnetic block adsorbed with the shift block on the outer wall of the collecting pipe, when there is no external force, the shift block extends out of the storage slot and is adsorbed by the magnetic block. When the shift block passes through the notch and abuts against the moving plate, the adsorption force of the magnetic block makes the magnetic block push the moving plate more stable. When the moving plate abuts against the fixed plate, the reaction force of the moving plate on the shift block overcomes the adsorption force of the magnetic block, so that the shift block is retracted into the storage slot, and the collecting pipe can move normally.

[0025] 3. By setting a closing block at the notch, when there is no external force, the closing block closes the notch under the action of the tension spring, so that a closed space is formed between the fixed plate and the baffle. When the movable plate moves toward the baffle, the internal solution can be quickly squeezed into the collecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is an overall cross-sectional view of the present invention.

[0028] Figure 3 It is a cross-sectional view of the driving motor part of the present invention.

[0029] Figure 4 yes Figure 2 A partial enlarged view of part A.

[0030] Figure 5It is a cross-sectional view of the quantitative extrusion mechanism part of the present invention.

[0031] Figure 6 It is a cross-sectional view of 5 parts in the present invention.

[0032] In the figure: 1. box body; 2. partition; 3. storage chamber; 4. collecting pipe; 5. nozzle; 6. feed port; 7. sealing cover; 8. driving worm gear; 9. driving worm; 10. driving motor; 11. sealing plate; 12. transfer chamber; 13. rotating seal; 14. feeding hole; 15. quantitative extrusion mechanism; 16. fixed plate; 17. movable plate; 18. baffle; 19. telescopic cylinder; 20. reset spring; 21. first one-way valve; 22. second one-way valve; 23. guide belt; 24. guide groove; 25. drainage tube; 26. adjusting member; 27. adjusting ring; 28. adjusting worm gear; 29. ​​adjusting worm; 30. movable groove; 31. knob; 32. toggle member; 33. storage groove; 34. toggle block; 35. support spring; 36. magnetic block; 37. notch; 38. closing block; 39. tension spring. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0034] like Figure 1-Figure 6 As shown, a liquid fertilizer configuration device includes a box body 1, which is divided into a plurality of storage chambers 3 from top to bottom by a plurality of partitions 2. The partitions 2 are arranged horizontally to store different types of liquid fertilizers. A collecting pipe 4 penetrating the plurality of chambers is rotatably connected to the middle of the box body 1. The collecting pipe 4 is arranged vertically. The collecting pipe 4 passes through the plurality of partitions 2 in sequence. A nozzle 5 connected to the collecting pipe 4 is arranged at the bottom of the box body 1. A rotating joint is arranged at the connection between the nozzle 5 and the collecting pipe 4. A feed port 6 is opened in the box body 1 corresponding to each storage chamber 3, and a sealing cover 7 is arranged on the feed port 6.

[0035] In order to drive the collecting pipe 4 to rotate, the top of the collecting pipe 4 is sealed and extends out of the box body 1, and the part of the top of the collecting pipe 4 located outside the box body 1 is fixedly connected to a driving worm gear 8. The top of the box body 1 is rotatably supported by a shaft seat with a driving worm 9 meshing with the driving worm gear 8, and one end of the driving worm 9 is connected to a driving motor 10.

[0036] The bottom surface of the partition 2 is fixedly connected with a sealing plate 11 having an L-shaped cross section and extending in a ring shape around the collecting pipe 4. The sealing plate 11, the partition 2 and the outer wall of the collecting pipe 4 cooperate to form an annular transfer chamber 12. Rotating seals 13 are provided between the partition 2 and the outer wall of the collecting pipe 4 and between the sealing plate 11 and the outer wall of the collecting pipe 4. The side walls of the collecting pipe 4 corresponding to the transfer chamber 12 are provided with feed holes 14 connected to the transfer chamber 12.

[0037] A quantitative extrusion mechanism 15 for transferring the liquid in the storage chamber 3 to the collecting pipe 4 is provided in the transfer chamber 12. The quantitative extrusion mechanism 15 includes a fixed plate 16 fixedly connected to the inner wall of the transfer chamber 12, a movable plate 17 slidably connected to the transfer chamber 12, a baffle 18 slidably connected to the transfer chamber 12 and located on the side of the movable plate 17 away from the fixed plate 16, a telescopic cylinder 19 whose two ends are respectively fixedly connected to the fixed plate 16 and the movable plate 17, a return spring 20 arranged in the telescopic cylinder 19 and whose two ends are respectively abutted against the fixed plate 16 and the movable plate 17, a first one-way valve 21 installed on the fixed plate 16, and a second one-way valve 22 installed on the movable plate 17.

[0038] There are at least two groups of quantitative extrusion mechanisms 15 evenly distributed around the circumference of the transfer chamber 12. The top and bottom surfaces of the transfer chamber 12 are fixedly connected with guide belts 23 extending in a ring shape around the collecting pipe 4. The top and bottom of the movable plate 17 and the baffle plate 18 are provided with guide grooves 24 for sliding connection with the guide belts 23.

[0039] The first one-way valve 21 and the second one-way valve 22 are both connected to the telescopic cylinder 19. The flow direction of the first one-way valve 21 is toward the telescopic cylinder 19, and the flow direction of the second one-way valve 22 is toward the movable plate 17. A drainage tube 25 is connected to the fixed plate 16, and one end of the drainage tube 25 is connected to the storage chamber 3 above, and the other end of the drainage tube 25 is connected to the telescopic cylinder 19.

[0040] An adjusting member 26 for adjusting the position of the baffle 18 is provided on the sealing plate 11, and the adjusting member 26 includes an adjusting ring 27 rotatably connected to the bottom of the sealing plate 11, an adjusting worm wheel 28 fixedly connected to the outer wall of the adjusting ring 27, and an adjusting worm 29 rotatably supported in the housing 1 and meshing with the adjusting worm wheel 28. A movable groove 30 connected to the transfer chamber 12 and extending circumferentially along the transfer chamber 12 is provided at the bottom of the sealing plate 11, and the bottom of the baffle 18 passes through the movable groove 30 and is connected to the adjusting ring 27, and one end of the adjusting worm 29 passes through the housing 1 and is fixedly connected to a knob 31.

[0041] The outer wall of the collecting pipe 4 corresponding to the transfer chamber 12 is provided with a toggle member 32 for pushing the movable plate 17. The toggle member 32 includes a receiving groove 33 opened on the side wall of the collecting pipe 4, a toggle block 34 hinged at one end to the receiving groove 33, and a support spring 35 fixedly connected between the inner wall of the receiving groove 33 and the toggle block 34. The support spring 35 applies a force in the rotation direction of the collecting pipe 4 to the toggle block 34 and keeps the toggle block 34 in an extended state. A magnetic block 36 is fixedly connected to the part of the side wall of the collecting pipe 4 located on the side of the toggle block 34 away from the receiving groove 33. The toggle block 34 is made of magnetic material. When the toggle block 34 extends out of the receiving groove 33, the toggle block 34 is adsorbed on the magnetic block 36.

[0042] By setting a magnetic block 36 adsorbed with the shift block 34 on the outer wall of the collecting pipe 4, when there is no external force, the shift block 34 extends out of the receiving groove 33 and is adsorbed by the magnetic block 36. When the shift block 34 passes through the notch 37 and abuts against the movable plate 17, due to the adsorption force of the magnetic block 36, the magnetic block 36 pushes the movable plate 17 more stably, and when the movable plate 17 abuts against the fixed plate 16, the reaction force of the movable plate on the shift block 34 overcomes the adsorption force of the magnetic block 36, so that the shift block 34 is retracted into the receiving groove 33, and the collecting pipe 4 can move normally.

[0043] A notch 37 for the shift block 34 to pass through is provided on the side of the baffle plate 18 close to the material collecting pipe 4, and a closing block 38 is provided on the notch 37. The edge of the closing block 38 close to the movable plate 17 is hinged to the inner side of the notch 37. A tension spring 39 is provided between the surface of the closing block 38 away from the material collecting pipe 4 and the inner side wall of the notch 37. In the absence of external force, the closing block 38 closes the notch 37. By providing the closing block 38 at the notch 37, in the absence of external force, the closing block 38 closes the notch 37 under the action of the tension spring 39, so that a closed space is formed between the fixed plate 16 and the baffle plate 18. When the movable plate 17 moves toward the baffle plate 18, the solution inside can be quickly squeezed into the material collecting pipe 4.

[0044] A liquid fertilizer preparation method comprises the following steps:

[0045] S1. Prepare several liquid fertilizers or pesticides with fixed concentrations, and pour each different liquid fertilizer or pesticide into the storage chamber 3 through the feed port 6;

[0046] S2. The worm is rotated by the knob 31 to make the adjusting ring 27 drive the baffle 18 to move, and the position of the baffle 18 in the transfer chamber 12 is adjusted to limit the maximum movable stroke of the movable plate 17, thereby adjusting the extrusion amount of the telescopic cylinder 19 when the collecting pipe 4 rotates one circle;

[0047] S3, start the driving motor 10, so that the collecting pipe 4 drives the toggle member 32 corresponding to each transfer chamber 12, when the toggle member 32 pushes the movable plate 17 to move toward the fixed plate 16, the solution in the telescopic cylinder 19 is squeezed out through the second one-way valve 22, when the movable plate 17 abuts against the fixed plate 16, the toggle block 34 is retracted into the receiving groove 33, the movable plate 17 moves toward the baffle 18 under the action of the return spring 20, the solution in the storage chamber 3 is sucked into the telescopic cylinder 19 through the first one-way valve 21, and the solution between the movable plate 17 and the baffle 18 is squeezed into the collecting pipe 4;

[0048] S4. Each solution extruded quantitatively is combined in the collecting pipe 4, and after being rotated and mixed, it is configured into the required liquid fertilizer.

[0049] The implementation principle of the present invention is:

[0050] When it is necessary to configure various fertilizers, the knobs 31 corresponding to the storage chambers 3 are rotated, and the position of the baffle plate 18 in the transfer chamber 12 is adjusted by adjusting the worm wheel 28 and the worm 29 to limit the maximum movement stroke of the movable plate 17. At this time, the drive motor 10 is started, and the collection pipe 4 starts to rotate under the cooperation of the drive worm wheel 8 and the drive worm 9. When the collection pipe 4 rotates, the shifting block 34 connected to the collection pipe 4 passes through the notch 37 of the baffle plate 18 and pushes the movable plate 17 to move toward the fixed plate 16. The movable plate 17 abuts against the fixed plate 16, so that the shifting block 34 is retracted into the receiving groove 33. The movable plate 17 moves toward the baffle 18 under the action of the return spring 20, and the solution in the storage chamber 3 is sucked into the telescopic cylinder 19 through the first one-way valve 21, and the solution between the movable plate 17 and the baffle 18 is squeezed into the collecting pipe 4. Each solution that has been quantitatively squeezed out is combined in the collecting pipe 4, and is configured into the required liquid fertilizer after being rotated and mixed.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A liquid fertilizer preparation device, comprising a box (1), characterized in that: The box body (1) is divided into a plurality of storage chambers (3) from top to bottom by a plurality of partitions (2), the partitions (2) are arranged horizontally, a collecting pipe (4) penetrating the plurality of chambers is rotatably connected to the middle of the box body (1), the collecting pipe (4) is arranged vertically, the collecting pipe (4) passes through the plurality of partitions (2) in sequence, a sealing plate (11) having an L-shaped cross section and extending in a ring shape around the collecting pipe (4) is fixedly connected to the bottom surface of the partition (2), the sealing plate (11), the partition (2) and the outer wall of the collecting pipe (4) cooperate to form An annular transfer chamber (12), the side wall of the collecting pipe (4) corresponding to the transfer chamber (12) is provided with a feed hole (14) connected to the transfer chamber (12), the transfer chamber (12) is provided with a quantitative extrusion mechanism (15) for transferring the liquid in the storage chamber (3) to the collecting pipe (4), the bottom of the box body (1) is provided with a nozzle (5) connected to the collecting pipe (4), the box body (1) is provided with a feed port (6) corresponding to each of the storage chambers (3), and the feed port (6) is provided with a sealing cover (7).

2. A liquid fertilizer preparation device according to claim 1, characterized in that: The quantitative extrusion mechanism (15) comprises a fixed plate (16) fixedly connected to the inner wall of the transfer chamber (12), a movable plate (17) slidably connected to the transfer chamber (12), a baffle (18) slidably connected to the transfer chamber (12) and located on the side of the movable plate (17) away from the fixed plate (16), a telescopic cylinder (19) whose two ends are respectively fixedly connected to the fixed plate (16) and the movable plate (17), a return spring (20) arranged in the telescopic cylinder (19) and whose two ends are respectively abutted against the fixed plate (16) and the movable plate (17), a first one-way valve (21) installed on the fixed plate (16), and a second one-way valve (22) installed on the movable plate (17). The first one-way valve (21) and the second one-way valve (22) are both connected to the telescopic cylinder (19); the flow direction of the first one-way valve (21) is toward the telescopic cylinder (19), and the flow direction of the second one-way valve (22) is toward the movable plate (17); a drainage tube (25) is connected to the fixed plate (16); one end of the drainage tube (25) is connected to the storage chamber (3) above, and the other end of the drainage tube (25) is connected to the telescopic cylinder (19); an adjusting member (26) for adjusting the position of the baffle (18) is provided on the sealing plate (11); and an outer wall of the collecting pipe (4) corresponding to the transfer chamber (12) is provided with a toggle member (32) for pushing the movable plate (17).

3. A liquid fertilizer preparation device according to claim 2, characterized in that: The adjusting member (26) comprises an adjusting ring (27) rotatably connected to the bottom of the sealing plate (11), an adjusting worm wheel (28) fixedly connected to the outer wall of the adjusting ring (27), and an adjusting worm (29) rotatably supported in the housing (1) and meshing with the adjusting worm wheel (28); a movable groove (30) connected to the transfer chamber (12) and extending along the circumference of the transfer chamber (12) is provided at the bottom of the sealing plate (11); the bottom of the baffle plate (18) passes through the movable groove (30) and is connected to the adjusting ring (27); one end of the adjusting worm (29) passes through the housing (1) and is fixedly connected to a knob (31).

4. A liquid fertilizer preparation device according to claim 2, characterized in that: The shifting member (32) comprises a receiving groove (33) provided on the side wall of the collecting pipe (4), a shifting block (34) hinged at one end to the receiving groove (33), and a supporting spring (35) fixedly connected between the inner wall of the receiving groove (33) and the shifting block (34), wherein the supporting spring (35) applies a force in the rotation direction of the collecting pipe (4) to the shifting block (34) and keeps the shifting block (34) in an extended state, and a notch (37) for the shifting block (34) to pass through is provided on a side of the baffle (18) close to the collecting pipe (4).

5. A liquid fertilizer preparation device according to claim 4, characterized in that: A portion of the side wall of the collecting pipe (4) located on the side of the shifting block (34) away from the receiving groove (33) is fixedly connected with a magnetic block (36); the shifting block (34) is made of magnetic material; when the shifting block (34) extends out of the receiving groove (33), the shifting block (34) is adsorbed on the magnetic block (36).

6. A liquid fertilizer preparation device according to claim 4, characterized in that: The notch (37) is provided with a closing block (38), and the edge of one side of the closing block (38) close to the movable plate (17) is hinged to the inner side of the notch (37). A tension spring (39) is provided between the surface of the closing block (38) away from the collecting pipe (4) and the inner side wall of the notch (37). In the absence of external force, the closing block (38) closes the notch (37).

7. The liquid fertilizer preparation device according to claim 2, characterized in that: The quantitative extrusion mechanism (15) is evenly distributed in at least two groups around the circumference of the transfer chamber (12), and the top and bottom surfaces of the transfer chamber (12) are fixedly connected to a guide belt (23) extending in a ring shape around the collecting pipe (4), and the top and bottom of the movable plate (17) and the baffle (18) are provided with a guide groove (24) for sliding connection with the guide belt (23).

8. The liquid fertilizer preparation device according to claim 1, characterized in that: The top of the collecting pipe (4) is sealed and extends out of the box body (1), and the portion of the top of the collecting pipe (4) located outside the box body (1) is fixedly connected to a driving worm gear (8), and the top of the box body (1) is rotatably supported by a shaft seat with a driving worm (9) meshed with the driving worm gear (8), and one end of the driving worm (9) is connected to a driving motor (10).

9. The liquid fertilizer preparation device according to claim 1, characterized in that: A rotating seal (13) is provided between the partition plate (2) and the outer wall of the collecting pipe (4), and between the sealing plate (11) and the outer wall of the collecting pipe (4).

10. A method for preparing liquid fertilizer, using the liquid fertilizer preparing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Prepare several liquid fertilizers or pesticides with fixed concentrations, and pour each different liquid fertilizer or pesticide into the storage chamber (3) through the feed port (6); S2, the worm is rotated by the knob (31) so that the adjusting ring (27) drives the baffle (18) to move, thereby adjusting the position of the baffle (18) in the transfer chamber (12) and limiting the maximum movable stroke of the movable plate (17), thereby adjusting the extrusion amount of the telescopic cylinder (19) when the collecting pipe (4) rotates one circle; S3, starting the driving motor (10), so that the collecting pipe (4) drives the shifting member (32) corresponding to each transfer chamber (12), when the shifting member (32) pushes the movable plate (17) to move toward the fixed plate (16), the solution in the telescopic cylinder (19) is squeezed out through the second one-way valve (22), when the movable plate (17) abuts against the fixed plate (16), the shifting block (34) is retracted into the receiving groove (33), the movable plate (17) moves toward the baffle (18) under the action of the return spring (20), the solution in the storage chamber (3) is sucked into the telescopic cylinder (19) through the first one-way valve (21), and the solution between the movable plate (17) and the baffle (18) is squeezed into the collecting pipe (4); S4. Each solution extruded in a quantitative manner is combined in a collecting pipe (4), and after being rotated and mixed, is configured into the required liquid fertilizer.

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