CN114190147A

CN114190147A - Irrigation and fertilization device for channel

Info

Publication number: CN114190147A
Application number: CN202111524372.0A
Authority: CN
Inventors: 林添河
Original assignee: Yongkang Yucheng Garden Tools Co ltd
Current assignee: Shandong Miaowang Water Saving Irrigation Equipment Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-03-18
Anticipated expiration: 2041-12-14
Also published as: CN114190147B

Abstract

The invention belongs to the field of channel irrigation, and particularly relates to a channel irrigation and fertilization device which comprises a shell, wherein a feed inlet is formed in one side of the shell, a fertilizer mixing cavity with an opening facing the feed inlet is formed in the shell, a water inlet pipe and a water outlet pipe are arranged on the outer wall of the shell, which is far away from the feed inlet and fixedly penetrates through the fertilizer mixing cavity, the water inlet pipe and the water outlet pipe are symmetrical relative to the feed inlet, a hydrodynamic mechanism is arranged in the fertilizer mixing cavity and close to the feed inlet, a concentration control mechanism is arranged in the fertilizer mixing cavity, a fertilizer scattering mechanism is arranged between the concentration control mechanism and the hydrodynamic mechanism, the concentration of fertilizer in water can be effectively controlled by adjusting the angle between concentration control plates through an adjusting shaft, the speed of fertilizer scattered into the fertilizer mixing cavity can be automatically adjusted according to the water flow speed through the rotation of a water flow spreading wheel, the concentration of the fertilizer in water is always consistent, and a sealing spring is restored to drive a sealing plate to reset after irrigation is finished, the water outlet hole is sealed, so that suction generated by the water pump cannot pass through the water outlet hole, and the water hose is damaged.

Description

Irrigation and fertilization device for channel

Technical Field

The invention belongs to the field of channel irrigation, and particularly relates to a channel irrigation and fertilization device.

Background

The process of fertilizer entering the field along with the irrigation water is called fertigation. The fertilizer is accurately supplemented and uniformly applied near the root system according to the nutrient requirements and climatic conditions of each stage of crop growth while irrigation such as drip irrigation, underground drip irrigation and the like, and is directly absorbed and utilized by the root system, so that the utilization rate of the fertilizer can be improved by irrigation and fertilization, and the using amount of the fertilizer is saved; the labor force of fertilization is saved; flexibly, conveniently and accurately master the fertilization time and quantity; the nutrient absorption speed is high; improving the environmental condition of the soil; is particularly suitable for the application of trace elements; the maximum benefit of water and fertilizer is brought into play; the method is beneficial to environmental protection, the existing irrigation channels in rural areas are mostly buried underground, water outlet piles are arranged at certain intervals, and water is pulled by a water pulling belt for drainage in watering, but the existing irrigation and fertilization have the following problems:

firstly, the concentration of fertilizer injected in irrigation water cannot be accurately controlled in the existing irrigation fertilization process;

the conventional fertigation method is characterized in that waste materials are sucked by negative pressure generated when water flows through the fertigation method, and the fertigation method is greatly influenced by pressure fluctuation in the fertilizer sucking process and cannot uniformly fertilize along with water flow;

and thirdly, backflow is easily caused when irrigation is finished in the existing irrigation process, so that the water hose is deformed, and finally the water hose is damaged.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a channel fertigation device which can control the concentration of fertilizer and prevent backflow.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a channel fertigation device, includes the shell, one side of shell is equipped with the feed inlet, be equipped with the mixed fertile chamber of opening towards the feed inlet in the shell, the shell is kept away from the feed inlet internal fixation runs through the outer wall in mixed fertile chamber is equipped with inlet tube and outlet pipe, the inlet tube with the outlet pipe is about the feed inlet symmetry, it is located to mix fertile intracavity the inlet tube is equipped with hydrodynamic mechanism with outlet pipe department, it is close to mix fertile intracavity feed inlet department is equipped with concentration control mechanism, concentration control mechanism with it spills fertilizer mechanism to be equipped with between the hydrodynamic mechanism.

Preferably, hydrodynamic mechanism includes it is perpendicular to mix fertile chamber the outlet pipe with rotate the push pedal wheel that is equipped with on two inner walls of mixing fertile chamber line, the annular evenly is equipped with eight groups water push pedal on the push pedal wheel, the axial of push pedal wheel evenly is equipped with a plurality of groups water push pedal.

Preferably, the hydrodynamic mechanism further comprises a backflow sealing cavity formed between the water outlet pipe and the shell, the shell is located on the outer wall of the water outlet pipe and is communicated with the backflow sealing cavity and a water outlet hole of the fertilizer mixing cavity, two sealing spring grooves with openings facing the backflow sealing cavity are symmetrically arranged at the water outlet hole in the shell, the backflow sealing cavity is located at the water outlet hole and is provided with a sealing plate in a sealing mode, and the sealing plate is connected to the inner walls of the two corresponding sealing spring grooves through two sealing springs.

Preferably, spill fertilizer mechanism include mix fertile chamber and be equipped with two fertilizer distributor wheels that are equipped with on the inner wall of push pedal wheel, two fertilizer distributor wheels with the outlet pipe with the line of inlet tube is parallel, is close to the fertilizer distributor wheel that spills of inlet tube with the push pedal wheel aligns, two one side of fertilizer distributor wheel is all fixed to be equipped with, two all be in the cavity of shell, two the meshing is connected, keep away from in the shell the side is equipped with the belt chamber, is close to the inlet tube spill and take turns to and keep away from on the fertilizer distributor wheel the fixed steering spindle that is equipped with of side, the push pedal wheel is kept away from the fixed driving pulley that is equipped with in side, driving pulley with driven pulley all is in the belt intracavity, driven pulley with connect through the belt between the driving pulley.

Preferably, concentration control mechanism includes mix fertile chamber and be close to on the lateral wall of feed inlet about two pivots that the feed inlet symmetry was equipped with, every all fix in the pivot and locate the concentration control board, two the concentration control board with form the compost groove between the feed inlet, it is located on the lateral wall in fertile chamber to mix concentration control board department is close to water push pedal side about the feed inlet symmetry is fixed and is equipped with two stoppers, the stopper is close to spill fertile wheel side is fixed and is equipped with the hourglass material pipe, the hourglass material pipe is with two spill fertile wheel semi-surrounding makes and can normally spill fertilizer when spilling fertile wheel and rotating.

Preferably, the concentration control mechanism further comprises a chain groove and a gear groove which are arranged in the shell and close to the side of the belt cavity, the chain groove is close to the fertilizer mixing cavity compared with the gear groove, a steering shaft is arranged on the inner wall of the middle position of the gear groove in a rotating manner, a steering gear is fixedly arranged on the steering shaft, the rotating shaft is arranged on the inner wall of the chain groove close to the gear groove in a rotating manner, a first driven chain wheel is fixedly arranged on the fertilizer spreading wheel close to the water outlet pipe, a second driven chain wheel is fixedly arranged on the fertilizer spreading wheel close to the belt cavity, the first driven chain wheel is positioned in the chain groove, an adjusting shaft and a driven shaft are symmetrically arranged in the gear groove about the steering shaft, a driving gear and a first driving chain wheel are fixedly arranged on the adjusting shaft, and a driven gear and a second driving wheel are fixedly arranged on the driven shaft, driven gear and driving gear are located the gear groove, first initiative chain wheel with second initiative chain wheel is located the chain inslot, first initiative chain wheel with first driven chain wheel is connected through first chain, second initiative chain wheel with second driven chain wheel passes through the second chain and connects, the driving gear with driven gear meshes simultaneously and establishes on the steering gear, the regulating spindle runs through the gear groove deviates from the inner wall of chain groove side.

Preferably, concentration control mechanism still includes the opening that is equipped with in the regulating spindle deviates from mix the button spout in fertile chamber, it is equipped with limit button to slide in the button spout, limit button is through connecting on the inner wall of button spout, the annular evenly is equipped with six on the lateral wall of button spout, correspond on the shell be equipped with the draw-in groove of six opening orientations, every it all slides in to be equipped with the fixture block to be equipped with, the fixture block passes through fixture block spring coupling on the inner wall that corresponds, every be close to button spout side all rotates and is equipped with the leading wheel, every the fixture block all passes through the recovery rope the leading wheel is connected on the limit button.

Has the advantages that: the concentration of the fertilizer in water can be effectively controlled by adjusting the angle between the concentration control plates through the adjusting shaft.

The push plate wheel is driven to rotate through water flow, the fertilizer spreading wheel is driven to rotate at the same time, the speed of fertilizer spreading into the fertilizer mixing cavity can be automatically adjusted according to the water flow speed, and the concentration of the fertilizer in water is consistent all the time.

Sealing spring resumes to drive the closing plate and resets when irrigating the end, seals up the apopore, and the suction that makes the water pump produce can't lead to the fact the injury to the hosepipe through the apopore.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic diagram of a structural implementation of the present invention;

FIG. 3 is a schematic view of FIG. 2 taken along line A-A;

FIG. 4 is a schematic view of the direction B-B in FIG. 2;

FIG. 5 is an enlarged view of FIG. 2 at C;

FIG. 6 is an enlarged view of FIG. 2 at D;

FIG. 7 is an enlarged view of E in FIG. 4;

fig. 8 is a schematic view in the direction F-F in fig. 7.

In the figure, a housing 10; a water outlet pipe 11; a fertilizer mixing cavity 12; a leakage pipe 13; a stopper 15; a rotating shaft 16; a composting tank 17; a concentration control plate 18; a water push plate 19; a pusher wheel 20; a water inlet pipe 21; a belt cavity 22; a driving pulley 23; a belt 24; a driven pulley 25; a fertilizer applicator wheel 26; a chain groove 27; a first chain 28; a first driven chain wheel 29; a gear groove 30; a drive gear 31; a first drive chain wheel 32; an adjustment shaft 33; a limit button 34; a steering shaft 35; a steering gear 36; a driven gear 37; a driven shaft 38; a second drive sprocket 39; a second chain 40; a second driven chain wheel 41; a return seal chamber 42; a sealing plate 43; a seal spring groove 44; a seal spring 45; a water outlet hole 46; a card slot 47; a latch 48; a latch spring 49; recovering the rope 50; a guide wheel 51; a button runner 52; a feed port 53; a hydrodynamic mechanism 90; a concentration control mechanism 91; a fertilizer spreading mechanism 92.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Combine fig. 2, a channel fertigation device, including shell 10, one side of shell 10 is equipped with feed inlet 53, be equipped with the mixed fertile chamber 12 of opening towards feed inlet 53 in the shell 10, shell 10 is kept away from the outer wall that feed inlet 53 internal fixation run through mixed fertile chamber 12 and is equipped with inlet tube 21 and outlet pipe 11, inlet tube 21 is symmetrical about feed inlet 53 with outlet pipe 11, it is equipped with hydrodynamic mechanism 90 to lie in inlet tube 21 and outlet pipe 11 department in the mixed fertile chamber 12, it is equipped with concentration control mechanism 91 to be close to feed inlet 53 department in the mixed fertile chamber 12, be equipped with between concentration control mechanism 91 and the hydrodynamic mechanism 90 and spill fertilizer mechanism 92.

Further, with reference to fig. 2, the hydrodynamic mechanism 90 includes a push plate wheel 20 rotatably disposed on two inner walls of the connection line between the vertical water outlet pipe 11 of the mixed fertilizer cavity 12 and the mixed fertilizer cavity 12, eight groups of water push plates 19 are uniformly annularly disposed on the push plate wheel 20, and a plurality of groups of water push plates 19 are uniformly disposed in the axial direction of the push plate wheel 20.

Further, with reference to fig. 5, the hydrodynamic mechanism 90 further includes a backflow sealing cavity 42 formed between the water outlet pipe 11 and the housing 10, the outer wall of the housing 10 located at the water outlet pipe 11 is provided with a water outlet hole 46 communicating the backflow sealing cavity 42 with the fertilizer mixing cavity 12, two sealing spring slots 44 having openings facing the backflow sealing cavity 42 are symmetrically arranged at the water outlet hole 46 in the housing 10, the backflow sealing cavity 42 is located at the water outlet hole 46 and is provided with a sealing plate 43 in a sealing manner, and the sealing plate 43 is connected to inner walls of the two corresponding sealing spring slots 44 through two sealing springs 45.

Further, with reference to fig. 3, the fertilizer spreading mechanism 92 includes two fertilizer spreading wheels 26 provided on the inner wall of the fertilizer mixing cavity 12 where the push plate wheel 20 is provided, the two fertilizer spreading wheels 26 are parallel to the connecting line of the water outlet pipe 11 and the water inlet pipe 21, the fertilizer spreading wheel 26 close to the water inlet pipe 21 is aligned with the push plate wheel 20, one side of each of the two fertilizer spreading wheels 26 is fixedly provided with 54, the two fertilizer spreading wheels 54 are both in the cavity of the housing 10, the two fertilizer spreading wheels 54 are connected in a meshed manner, the side far away from 54 in the housing 10 is provided with a belt cavity 22, the side far away from 54 on the fertilizer spreading wheel 26 close to the water inlet pipe 21 is fixedly provided with a steering shaft 35, the side far away from 54 of the push plate wheel 20 is fixedly provided with a driving pulley 23, the driving pulley 23 and a driven pulley 25 are both in the belt cavity 22, and the driven pulley 25 is connected with the driving pulley 23 through a belt 24.

Further, combine fig. 2, concentration control mechanism 91 includes two pivots 16 that are equipped with about feed inlet 53 symmetry on the lateral wall that mix fertile chamber 12 is close to feed inlet 53, all fix in every pivot 16 and locate concentration control board 18, form composting groove 17 between two concentration control boards 18 and the feed inlet 53, it is close to water push pedal 19 side and is equipped with two stopper 15 about feed inlet 53 symmetry fixed to lie in concentration control board 18 department on the lateral wall that mixes fertile chamber 12, stopper 15 is close to the fixed hourglass material pipe 13 that is equipped with in fertilization wheel 26 side, hourglass material pipe 13 is with two fertilization wheels 26 semi-encirclements, can normally spill fertilizer when making fertilization wheel 26 rotate.

Further, referring to fig. 4, the concentration control mechanism 91 further includes a chain groove 27 and a gear groove 30 disposed in the housing 10 near the belt cavity 22, the chain groove 27 is closer to the fertilizer mixing cavity 12 than the gear groove 30, a steering shaft 35 is rotatably disposed on an inner wall of a middle position of the gear groove 30, a steering gear 36 is fixedly disposed on the steering shaft 35, a rotating shaft 16 is rotatably disposed on an inner wall of the chain groove 27 near the gear groove 30, a first driven chain wheel 29 is fixedly disposed on the fertilizer spreading wheel 26 near the water outlet pipe 11, a second driven chain wheel 41 is fixedly disposed on the fertilizer spreading wheel 26 near the belt cavity 22, the first driven chain wheel 29 is disposed in the chain groove 27, an adjusting shaft 33 and a driven shaft 38 are symmetrically disposed in the gear groove 30 with respect to the steering shaft 35, a driving gear 31 and a first driving gear 32 are fixedly disposed on the adjusting shaft 33, a driven gear 37 and a second driving chain wheel 39 are fixedly disposed on the driven shaft 38, the driven gear 37 and the driving gear 31 are located in the gear groove 30, the first driving chain wheel 32 and the second driving chain wheel 39 are located in the chain groove 27, the first driving chain wheel 32 and the first driven chain wheel 29 are connected through the first chain 28, the second driving chain wheel 39 and the second driven chain wheel 41 are connected through the second chain 40, the driving gear 31 and the driven gear 37 are simultaneously meshed and arranged on the steering gear 36, and the adjusting shaft 33 penetrates through the inner wall of the gear groove 30, which is far away from the side of the chain groove 27.

Further, combine fig. 7, fig. 8, concentration control mechanism 91 still includes button spout 52 that the opening that is equipped with in the regulating spindle 33 deviates from mixing fertile chamber 12, it is equipped with limit button 34 to slide in the button spout 52, limit button 34 connects on the inner wall of button spout 52 through 55, the annular evenly is equipped with six 56 on the lateral wall of button spout 52, it is equipped with six draw-in grooves 47 that the opening faces 56 to correspond 56 on the shell 10, all slide in every 56 and be equipped with fixture block 48, fixture block 48 passes through fixture block spring 49 and connects on the inner wall that corresponds 56, every 56 is close to button spout 52 side and all rotates and is equipped with leading wheel 51, every fixture block 48 all passes leading wheel 51 through recovery rope 50 and connects on limit button 34.

Initial state: the sealing spring 45 is in a slightly stretched state, 55 is in a normal state, the latch spring 49 is in a normal state, and the recovery cord 50 is always in a tensioned state.

The working principle is as follows: the water inlet pipe 21 is arranged on a water outlet pile of an irrigation channel, a water belt is arranged at the position of a water outlet pipe 11, fertilizer is poured into a composting groove 17 from a feed inlet 53,

limit buttons

34 and 55 are pressed to be compressed, meanwhile, the limit button 34 pulls a fixture block 48 through a recovery rope 50, the fixture block 48 is pulled out from a clamping groove 47, then an adjusting shaft 33 is rotated, the adjusting shaft 33 drives a driven gear 37 and a driving gear 31 to rotate reversely through a driving gear 31 and a steering gear 36, the adjusting shaft 33 drives a first driven chain wheel 29 to rotate through a first driving chain wheel 32 and a first chain 28, a driven shaft 38 drives a second driven chain wheel 41 to rotate through a second driving chain wheel 39 and a second chain 40, the second driven chain wheel 41 and the first driven chain wheel 29 are driven to rotate through a corresponding rotating shaft 16 and a concentration control plate 18 respectively, a gap is generated between the two concentration control plates 18, and the fertilizer falls into the fertilizer leakage pipe 13 through the gap, the concentration of the fertilizer in water can be effectively controlled by adjusting the angle between the concentration control plates 18 through the adjusting shaft 33, the limiting buttons 34 are loosened after the gaps of the concentration control plates 18 are adjusted, 55 are restored to drive the limiting buttons 34 to reset, the fixture block springs 49 drive the corresponding fixture blocks 48 to reset, so that the fixture blocks 48 are inserted into the adjacent clamping grooves 47, the fertilizer is prevented from being added into the composting groove 17 to change the size of the gaps between the concentration control plates 18, the pushing plate wheel 20 is driven to rotate by impacting the water pushing plate 19 after water enters the water inlet pipe 21, the pushing plate wheel 20 drives the driven belt pulley 25 to rotate through the driving belt wheel 23 and the belt 24, the driven belt pulley 25 drives the fertilizer spreading wheel 26 close to the water inlet pipe 21 to rotate, meanwhile, the fertilizer spreading wheel 26 close to the water inlet pipe 21 drives the fertilizer spreading wheel 26 close to the water outlet pipe 11 to rotate through 54, so that the fertilizer in the material leakage pipe 13 is pulled into the fertilizer mixing cavity 12 by the two fertilizer spreading wheels 26 to be mixed with the water, drive push plate wheel 20 through rivers and rotate, it rotates to drive fertilizer distributor 26 simultaneously, can spill into the speed of mixing in fertile chamber 12 according to water velocity adjustment fertilizer automatically, make the concentration of fertilizer unanimous all the time in the water, water after melting fertilizer in mixing fertile chamber 12 presses sealing plate 43 to outlet pipe 11 slip through apopore 46, sealing spring 45 is stretched, water in mixing fertile chamber 12 will discharge from outlet pipe 11 through apopore 46 and backflow seal chamber 42, irrigate, sealing spring 45 resumes to drive sealing plate 43 and resets when irrigating the end, it is sealed with apopore 46, the suction that makes the water pump produce can't pass through apopore 46, cause the injury to the hosepipe.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A channel fertigation device, includes shell (10), its characterized in that: one side of shell (10) is equipped with feed inlet (53), be equipped with mixed fertile chamber (12) of opening towards feed inlet (53) in shell (10), shell (10) are kept away from feed inlet (53) internal fixation runs through the outer wall of mixing fertile chamber (12) is equipped with inlet tube (21) and outlet pipe (11), inlet tube (21) with outlet pipe (11) about feed inlet (53) symmetry, be located in mixing fertile chamber (12) inlet tube (21) and outlet pipe (11) department are equipped with hydrodynamic mechanism (90), be close to in mixing fertile chamber (12) feed inlet (53) department is equipped with concentration control mechanism (91), concentration control mechanism (91) with it spills fertilizer mechanism (92) to be equipped with the water between hydrodynamic mechanism (90).

2. The channel fertigation device of claim 1, wherein: hydrodynamic mechanism (90) include it is perpendicular to mix fertile chamber (12) outlet pipe (11) with it rotates push pedal wheel (20) that are equipped with on two inner walls of fertile chamber (12) line to mix, the annular evenly is equipped with eight groups water push pedal (19) on push pedal wheel (20), the axial of push pedal wheel (20) evenly is equipped with a plurality of groups water push pedal (19).

3. The channel fertigation device of claim 2, wherein: hydrodynamic mechanism (90) still include outlet pipe (11) with backflow seal chamber (42) that form between shell (10), shell (10) are located be equipped with the intercommunication on the outer wall of outlet pipe (11) department backflow seal chamber (42) with apopore (46) of mixing fertile chamber (12), lie in shell (10) apopore (46) department about apopore (46) symmetry is equipped with two openings towards the sealed spring groove (44) of backflow seal chamber (42), backflow seal chamber (42) are located apopore (46) department is sealed to be equipped with closing plate (43), closing plate (43) are connected on the inner wall of two corresponding sealed spring grooves (44) through two sealed springs (45).

4. The channel fertigation device of claim 3, wherein: fertilizer spreading mechanism (92) includes mix fertile chamber (12) and be equipped with two fertilizer spreading wheels (26) that are equipped with on the inner wall of push pedal wheel (20), two fertilizer spreading wheel (26) with outlet pipe (11) with the line of inlet tube (21) is parallel, be close to fertilizer spreading wheel (26) of inlet tube (21) with push pedal wheel (20) align, two one side of fertilizer spreading wheel (26) all is fixed and is equipped with (54), two (54) all are in the cavity of shell (10), two the meshing of (54) is connected, keep away from in shell (10) 54) side is equipped with belt chamber (22), be close to inlet tube (21) keep away from on fertilizer spreading wheel (26) the fixed steering shaft (35) that is equipped with in (54) side, push pedal wheel (20) keep away from the fixed driving pulley (23) that is equipped with in belt chamber (22) side, driving pulley (23) and driven pulley (25) all are in belt chamber (22), the driven pulley (25) is connected with the driving pulley (23) through a belt (24).

5. The channel fertigation device of claim 4, wherein: concentration control mechanism (91) include mix fertile chamber (12) and be close to on the lateral wall of feed inlet (53) about two pivot (16) that feed inlet (53) symmetry was equipped with, every all fix in pivot (16) and locate concentration control board (18), two concentration control board (18) with form between feed inlet (53) and pile up fertile groove (17), it is located to mix on the lateral wall of fertile chamber (12) concentration control board (18) department is close to water push plate (19) side is about feed inlet (53) symmetry is fixed and is equipped with two stopper (15), stopper (15) are close to spill fertile wheel (26) side is fixed and is equipped with hourglass material pipe (13), hourglass material pipe (13) with two spill fertile wheel (26) semi-surrounding makes and can normally spill fertilizer when spilling fertile wheel (26) and rotate.

6. The channel fertigation device of claim 5, wherein: concentration control mechanism (91) still include be close to in shell (10) chain groove (27) and gear groove (30) that belt chamber (22) side was equipped with, chain groove (27) compare in gear groove (30) are close to mix fertile chamber (12), it is equipped with steering spindle (35) to rotate on the inner wall of the intermediate position of gear groove (30), and it is equipped with steering gear (36) to state to complain on steering spindle (35) fixed, pivot (16) are all rotated and are established chain groove (27) are close to on the inner wall of gear groove (30), are close to fixed being equipped with first driven chain wheel (29) on fertile wheel (26) of outlet pipe (11), are close to fixed being equipped with second driven chain wheel (41) on fertile wheel (26) of belt chamber (22), first driven chain wheel (29) are located in chain groove (27), gear groove (30) are concerned with steering spindle (35) symmetry is equipped with regulating spindle (33) and driven shaft (41) 38) The adjusting shaft (33) is fixedly provided with a driving gear (31) and a first driving chain wheel (32), a driven gear (37) and a second driving chain wheel (39) are fixedly arranged on the driven shaft (38), the driven gear (37) and the driving gear (31) are positioned in the gear groove (30), the first active chain wheel (32) and the second active chain wheel (39) are positioned in the chain groove (27), the first driving chain wheel (32) is connected with the first driven chain wheel (29) through a first chain (28), the second driving chain wheel (39) and the second driven chain wheel (41) are connected through a second chain (40), the driving gear (31) and the driven gear (37) are meshed with each other and arranged on the steering gear (36), the adjusting shaft (33) penetrates through the inner wall of the gear groove (30) on the side departing from the chain groove (27).

7. The channel fertigation device of claim 6, wherein: the concentration control mechanism (91) also comprises a button chute (52) with an opening deviating from the fertilizer mixing cavity (12) and arranged in the adjusting shaft (33), a limit button (34) is arranged in the button sliding groove (52) in a sliding way, the limit button (34) is connected to the inner wall of the button sliding groove (52) through a connecting rod (55), six buttons (56) are uniformly arranged on the side wall of the button sliding groove (52) in an annular manner, six clamping grooves (47) with openings facing (56) are formed in the shell (10) corresponding to the clamping grooves (56), a clamping block (48) is arranged in each clamping groove (56) in a sliding mode, the fixture blocks (48) are connected to the inner walls of the corresponding fixture blocks (56) through fixture block springs (49), guide wheels (51) are rotatably arranged on the sides, close to the button sliding grooves (52), of the fixture blocks (56), and each fixture block (48) penetrates through the guide wheel (51) through a recovery rope (50) to be connected to the limiting button (34).