CN113396884A

CN113396884A - Semi-automatic backpack pesticide sprinkler

Info

Publication number: CN113396884A
Application number: CN202110545927.3A
Authority: CN
Inventors: 刘中亚
Original assignee: Individual
Current assignee: Linyi Lanou Plant Protection Machinery Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-09-17
Anticipated expiration: 2041-05-19
Also published as: CN115380887A; CN113396884B

Abstract

The invention discloses a semi-automatic backpack pesticide spraying device, which comprises a base and is characterized in that: the automatic pesticide mixing device is characterized in that a cleaning mechanism is arranged above the base, a spraying mechanism is arranged on one side of the cleaning mechanism, an air exhaust mechanism is arranged inside the base, a water supply mechanism is arranged above the base, the cleaning mechanism is connected above the base through a bearing, gear teeth are welded at the top end and the bottom end of the cleaning mechanism, a driven gear is connected on one side of the cleaning mechanism through a bearing, a folding rod is welded above the base, a rack is sleeved on the folding rod in a sliding mode, a clamping and connecting rod is welded at one end of the rack, a bent rod is welded at one end above the base, one end of the bent rod penetrates through the spraying mechanism, a spiral groove is formed in the outer surface of the spraying mechanism, and a pesticide cavity is connected inside the spraying mechanism through a bearing.

Description

Semi-automatic backpack pesticide sprinkler

Technical Field

The invention relates to the technical field of pesticide spraying, in particular to a semi-automatic backpack type pesticide spraying device.

Background

In traditional agricultural production, the mode of spraying insecticide is mostly adopted to guarantee the health of crops to reach the purpose of improving crop yield, but with regard to the agricultural production of our country at present, the mode of spraying insecticide is generally adopted in the farm by the manual work, its inefficiency, and there are multiple uncontrollable circumstances, have crops by phenomenons such as damage, workman's pesticide poisoning.

Therefore, it is necessary to design a semi-automatic backpack type pesticide spraying device which automatically mixes the pesticide and automatically cleans the device itself.

Disclosure of Invention

The invention aims to provide a semi-automatic backpack pesticide spraying device to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a semi-automatic backpack pesticide sprinkler, includes the base, the base top is provided with clean mechanism, one side of clean mechanism is provided with spraying mechanism, the inside exhaust mechanism that is provided with of base, the base top is provided with water supply mechanism.

According to the technical scheme, clean mechanism passes through the bearing and connects in the top of base, the top and the bottom welding of clean mechanism have the teeth of a cogwheel, one side of clean mechanism is connected with driven gear through the bearing, the top welding of base has the folding rod, the rack has been cup jointed in the sliding on the folding rod, the one end welding of rack has the joint rod, the one end welding of base top has the knee, the inside of spraying mechanism is worn to locate by the one end of knee, the helicla flute has been seted up to spraying mechanism's surface, spraying mechanism is inside to be connected with the pesticide chamber through the bearing, the welding of one side in pesticide chamber has the shower nozzle, the left end position under to spraying mechanism is worn to locate by the shower nozzle.

According to the technical scheme, the inside medicine feed chamber that is fixed with of spraying mechanism, the medicine feed mouth has been seted up to one side of medicine feed chamber, the medicine inlet has been seted up to one side in pesticide chamber, the top welding of knee has the threaded rod, the thread groove has been seted up on the inner wall in pesticide chamber, the inside joint of thread groove has the slider, the movable dish has been cup jointed in the right side slip in pesticide chamber, the bottom of slider welds in the top of movable dish, the inside of movable dish is worn to locate by the threaded rod, the screw thread has been seted up to the junction of movable dish and threaded rod.

According to the technical scheme, the inside deinsectization chamber that is fixed with of driven gear, one side welding in deinsectization chamber has the medicament pipeline, clean mechanism's inside welding has clean chamber, clean chamber both ends are fixed with the transfer chamber, the one end through connection in transfer chamber has the aperture, the welding has the cylinder on the inner wall of clean mechanism, the piston has been cup jointed in the inside slip of cylinder, the top welding of piston has the arc cover, the both ends of arc cover contact with the inner wall in clean chamber.

According to the technical scheme, the upper end of the base is welded with the air duct, the side air ducts are welded on the two sides of the base, the exhaust mechanism is welded on the bottom end of the inside of the base, the air blower is connected with one end of the exhaust mechanism in a penetrating mode, the upper end of the inside of the base is connected with the first spring, the trapezoidal block is welded on the bottom end of the first spring, the long rod is welded on the bottom end of the trapezoidal block, the first sponge block is welded on the top end of the long rod, and the first sponge block is located below the base.

According to the technical scheme, the welding of rack below has the jib, the bottom welding of jib has flexible pipeline, flexible pipeline's top is connected with the push pedal, water supply mechanism welds in one side of folding rod, the inside slip of water supply mechanism has cup jointed the slide, the top welding of slide has the stripper plate, one side of stripper plate is connected with spring two, the one end of spring two is connected in water supply mechanism's top, the pressure valve is installed to flexible pipeline's centre, the bottom of pressure valve is connected with sponge piece two, water supply mechanism link up with the confession medicine chamber and link to each other, one side through connection of water supply mechanism has the water pump.

According to the technical scheme, the cleaning agent is filled in the cleaning cavity, and alcohol is mixed in the cleaning agent.

According to the technical scheme, the top end of the trapezoidal block is welded with the magnetic block.

According to the technical scheme, the water pump is communicated with the water supply mechanism, and the deinsectization cavity is filled with the deinsectization agent.

According to the technical scheme, the pesticide is filled in the pesticide supply cavity.

Compared with the prior art, the invention has the following beneficial effects: according to the agricultural chemical dilution device, the spraying mechanism is arranged, the spraying mechanism is used for mixing the agricultural chemical and spraying the agricultural chemical to crops, the cleaning mechanism is used for cleaning impurities falling from the surface of the device, the air exhaust mechanism is used for conveying wind power outwards, the phenomena that the agricultural chemical volatilizes to the upper portion of a farmland and is poisoned by workers and the like are avoided, and the water supply mechanism is used for supplying water to the spraying mechanism, so that the aim of diluting the agricultural chemical is fulfilled.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a schematic view of the spray mechanism of the present invention;

FIG. 3 is a schematic view of the cleaning mechanism and driven gear of the present invention;

FIG. 4 is a schematic view of the internal principles of the base of the present invention;

FIG. 5 is a schematic view of the water supply mechanism of the present invention;

in the figure: 1. a base; 2. a spraying mechanism; 3. an agricultural chemical cavity; 4. a cleaning mechanism; 5. a driven gear; 6. a rack; 7. a clamping and connecting rod; 8. a helical groove; 10. a movable tray; 11. a threaded rod; 12. a slider; 14. cleaning the cavity; 15. a cylinder; 16. a piston; 17. an arc-shaped cover; 18. a transfer chamber; 19. a medicament conduit; 20. a deinsectization cavity; 21. an upper wind barrel; 22. a side air duct; 23. a trapezoidal block; 24. an air exhaust mechanism; 25. a sponge block I; 26. a magnetic block; 27. a first spring; 28. a water supply mechanism; 29. a slide plate; 30. a pressing plate; 31. a second spring; 32. a pressure valve; 33. pushing the plate; 34. and a sponge block II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: a semi-automatic backpack pesticide spraying device comprises a base 1, wherein a cleaning mechanism 4 is arranged above the base 1, a spraying mechanism 2 is arranged on one side of the cleaning mechanism 4, an air exhaust mechanism 24 is arranged inside the base 1, and a water supply mechanism 28 is arranged above the base 1; utilize sprinkling mechanism 2 to mix the pesticide to spray to crops, utilize the impurity that cleaning mechanism 4 cleaning device surface dropped, utilize 24 outside wind-force of carrying in exhaust mechanism, avoid the pesticide to volatilize to the farmland overhead, cause phenomenons such as workman's poisoning, utilize water supply mechanism 28 to supply water in sprinkling mechanism 2, in order to reach the purpose of diluting the pesticide.

The cleaning mechanism 4 is connected above the base 1 through a bearing, gear teeth are welded at the top end and the bottom end of the cleaning mechanism 4, one side of the cleaning mechanism 4 is connected with a driven gear 5 through a bearing, a folding rod is welded above the base 1, a rack 6 is sleeved on the folding rod in a sliding mode, a clamping rod 7 is welded at one end of the rack 6, a bent rod is welded at one end above the base 1, one end of the bent rod penetrates through the spraying mechanism 2, a spiral groove 8 is formed in the outer surface of the spraying mechanism 2, a pesticide cavity 3 is connected inside the spraying mechanism 2 through a bearing, a nozzle is welded at one side of the pesticide cavity 3, and the nozzle penetrates through a lower left end position of the spraying mechanism 2; after the device is started, the cleaning mechanism 4 starts to rotate under the driving of external torque, at the moment, the gear teeth below the cleaning mechanism 4 are meshed with the rack 6, the cleaning mechanism 4 rotates clockwise to drive the rack 6 to move leftwards, the rack 6 is meshed with the driven gear 5, the driven gear 5 is driven by the driven gear to move clockwise, when the gear teeth below the cleaning mechanism 4 are disengaged from the rack 6, the gear teeth above the cleaning mechanism 4 are meshed with the driven gear 5 at the moment, the driven gear 5 is driven by the driven gear 5 to move anticlockwise, the rack 6 is driven by the driven gear 5 to move rightwards, namely, the driven gear 5 rotates in a clockwise and anticlockwise periodical switching manner along with the continuous rotation of the cleaning mechanism 4, the rack 6 reciprocates leftwards and rightwards, the rack 6 drives the clamping rod 7 to reciprocate, as the clamping rod 7 is clamped in the spiral groove 8, when the clamping rod 7 reciprocates, the spraying mechanism 2 also reciprocates in a clockwise and anticlockwise switching manner, its inside pesticide will be along with its rotation and misce bene gradually to along with the rotation of sprinkling mechanism 2, it will drive the shower nozzle and do left and right reciprocating and wave, make the pesticide can be thrown away under the effect of centrifugal force, the speed that the pesticide spills is faster, under the prerequisite of guaranteeing the pesticide intensive mixing, spills the pesticide fast, improves work efficiency.

A pesticide supply cavity is fixed inside the spraying mechanism 2, a pesticide supply port is formed in one side of the pesticide supply cavity, a pesticide inlet is formed in one side of the pesticide cavity 3, a threaded rod 11 is welded at the top end of the bent rod, a threaded groove is formed in the inner wall of the pesticide cavity 3, a sliding block 12 is clamped inside the threaded groove, a movable disc 10 is sleeved on the right side of the pesticide cavity 3 in a sliding mode, the bottom end of the sliding block 12 is welded to the top end of the movable disc 10, the threaded rod 11 penetrates through the movable disc 10, and a thread is formed in the joint of the movable disc 10 and the threaded rod 11; when the device is started, the spraying mechanism 2 drives the spray head to do left-right reciprocating shaking, the spray head at the moment drives the pesticide cavity 3 to do reciprocating rotation, when the pesticide inlet of the pesticide cavity 3 is opposite to the pesticide supply inlet of the pesticide cavity, the pesticide in the pesticide supply cavity can smoothly flow into the pesticide cavity 3, so the pesticide can be supplied into the pesticide cavity 3 once along with the rotation of the spraying mechanism 2, the phenomenon that too much pesticide enters the pesticide cavity 3 once and the pesticide at the spraying position is too much to cause waste is avoided, and when the pesticide cavity 3 rotates, because the slide block 12 at the top end of the movable disc 10 is clamped in the thread groove and the connection part of the slide block and the threaded rod 11 is provided with threads, the movable disc 10 can do reciprocating motion towards the inside of the pesticide cavity 3 and reciprocating motion outwards from the inside of the pesticide cavity 3 along with the rotating reciprocating rotation of the pesticide cavity 3, the pressure increase in the pesticide cavity 3 is reduced, can extrude the shower nozzle with the inside pesticide in pesticide chamber 3 during the pressure increase under the high pressure for the pesticide effect scope is bigger, and when pressure reduces, when advancing the medicine mouth and supplying the medicine mouth to each other, the inside of its self is inhaled fast to the pesticide in the medicine chamber of will supplying fast in pesticide chamber 3, has accelerated the speed of supplying medicine, has promoted the spray velocity of pesticide, thereby improves work efficiency.

A deinsectization cavity 20 is fixed inside the driven gear 5, a medicament pipeline 19 is welded on one side of the deinsectization cavity 20, a cleaning cavity 14 is welded inside the cleaning mechanism 4, transfer cavities 18 are fixed at two ends of the cleaning cavity 14, one end of each transfer cavity 18 is connected with a small hole in a through mode, an air cylinder 15 is welded on the inner wall of the cleaning mechanism 4, a piston 16 is sleeved inside the air cylinder 15 in a sliding mode, an arc-shaped cover 17 is welded at the top end of the piston 16, and two ends of the arc-shaped cover 17 are in contact with the inner wall of the cleaning cavity 14; after the device is started, the driven gear 5 starts to rotate back and forth under the coordination of the cleaning mechanism 4 and the rack 6, at the moment, the pesticide filled in the pesticide cavity 20 inside the device is spilled out from the pesticide pipeline 19 by centrifugal force, the device kills the flying insects outside the device, avoids the phenomenon that when workers operate the device, the flying insects cause unnecessary interference to workers, and as the driven gear 5 and the cleaning mechanism 4 continue to rotate, a large amount of heat is generated between the two due to the meshing rotation, at this time, the gas inside the cylinder 15 is heated and expanded, the piston 16 is pressed to move towards the cleaning cavity 14, which drives the arc cover 17 to move, the arc cover 17 is opened, the cleaning agent in the cleaning cavity 14 flows into the transfer cavity 18 and is finally thrown out from the small hole under the action of centrifugal force, the device has the advantages that impurities outside the device and the corpses of the winged insects are cleaned, and the situation that the operation of the device is limited or damaged due to the fact that the impurities and the corpses of the winged insects enter the device is avoided.

An upper air duct 21 is welded at the upper end of a base 1, side air ducts 22 are welded at two sides of the base 1, an exhaust mechanism 24 is welded at the bottom end inside the base 1, one end of the exhaust mechanism 24 is connected with an air blower in a through mode, a first spring 27 is connected at the upper end inside the base 1, a trapezoidal block 23 is welded at the bottom end of the first spring 27, a long rod is welded at the bottom end of the trapezoidal block 23, a first sponge block 25 is welded at the top end of the long rod, and the first sponge block 25 is located below the base 1; after the device is started, the air blower blows outwards, the air flow is discharged to the inside of the base 1 from the air exhaust mechanism 24 and finally blown out from the upper air barrel 21 and the side air barrel 22, the air flow blown out from the upper air barrel 21 can dry the water remained on the device due to cleaning, the air flow blown out from the side air barrel 22 can cool the pesticide evaporated in a farmland, so that the pesticide is condensed into water drops to fall into the farmland again, worker poisoning caused by excessive pesticide evaporation is avoided, pesticide waste caused by pesticide loss in the farmland due to excessive pesticide volatilization can be avoided, when the volatilized pesticide is excessive, the sponge block I25 is heavy due to excessive pesticide absorption, the ladder block I25 pulls the ladder block I23 downwards, the spring I27 is stretched, the ladder block I23 moves downwards, the air exhaust mechanism 24 is subjected to inward extrusion force, the caliber of the air exhaust mechanism 24 is reduced, the air flow rate blown out from the inside of the air blower is accelerated, make the wind-force in last dryer 21 and the side draft tube 22 stronger, the air current that blows out in the side draft tube 22 can be better to the cooling effect of pesticide, avoids volatilizing this moment too much pesticide and the air current that blows out in the side draft tube 22 is not enough to make the pesticide cool off completely and fall back to the farmland in, and this device has realized avoiding the pesticide to volatilize and cause the condition such as workman's poisoning and extravagant pesticide through above-mentioned step when air-drying the device surface.

A hanging rod is welded below the rack 6, a flexible pipeline is welded at the bottom end of the hanging rod, a push plate 33 is connected to the top end of the flexible pipeline, a water supply mechanism 28 is welded on one side of the folding rod, a sliding plate 29 is sleeved in the water supply mechanism 28 in a sliding mode, an extrusion plate 30 is welded at the top end of the sliding plate 29, a second spring 31 is connected to one side of the extrusion plate 30, one end of the second spring 31 is connected to the top end of the water supply mechanism 28, a pressure valve 32 is installed in the middle of the flexible pipeline, a second sponge block 34 is connected to the bottom of the pressure valve 32, the water supply mechanism 28 is communicated with the medicine supply cavity, and a water pump is communicated with one side of the water supply mechanism 28; after the device is started, the rack 6 reciprocates left and right, the flexible pipeline and the push plate 33 below the rack are driven by the rack to move left and right, the extrusion plate 30 is pushed, the slide plate 29 extrudes water flow in the water supply mechanism 28, the water flow flows into the pesticide supply cavity and is mixed with pesticide, the pesticide is diluted, the damage to crops caused by overlarge pesticide density is avoided, when the rack 6 drives the flexible pipeline and the push plate 33 to move in opposite directions, the pressure of the push plate 33 on the extrusion plate 30 disappears, the spring II 31 recovers at the moment, the slide plate 29 resets, the water supply mechanism 28 sucks the water flow in the water pump into the water supply mechanism 28 for next water supply, meanwhile, when the pesticide spraying is completed, the excessive pesticide begins to volatilize, the sponge block II 34 absorbs the weight of the pesticide, the downward pressure valve 32 is driven to be opened by the downward pressure, the gas in the flexible pipeline is discharged, the flexible pipeline is softened, the push plate 33 sags under the influence of gravity, when the rack 6 moves, the push plate 33 cannot be driven to push the extrusion plate, the water supply mechanism 28 stops supplying water to the pesticide supply cavity, and water resource waste caused by continuous water supply to the pesticide supply cavity after pesticide spraying is avoided.

The cleaning cavity 14 is filled with cleaning agent mixed with alcohol; when the sanitizer in clean chamber 14 is spilled, its inside alcohol will be can mixing arrangement surface residual moisture, because alcohol volatilization speed is fast, make the moisture volatilization speed on device surface accelerate, make the device surface air-dried fast, avoid the device to rust because of soaking for a long time, alcohol volatilizees simultaneously and takes away the heat in the device, make the heat that driven gear 5 and clean mechanism 4 produced when the meshing is beaten away, make both take place the shrink of certain degree after the cooling, avoid both to expand then make its extruded power when the meshing motion bigger because of the high temperature, lead to the device to be impaired easily.

The top end of the trapezoidal block 23 is welded with a magnetic block 26; when the first sponge block 25 is moistened and pressed down and drives the trapezoidal block 23 to move downwards, the trapezoidal block 23 extrudes the air exhaust mechanism 24, the caliber of the air exhaust mechanism 24 is reduced, the air flow speed blown out is faster, under the action of the magnetic block 26, the top of the trapezoidal block 23 has attraction of mutual attraction, the top of the trapezoidal block 23 has a tendency of mutual approaching, the magnetic block 26 always presents the phenomenon of top caliber shrinkage when extruding the air exhaust mechanism 24, and the air flow outflow speed inside the trapezoidal block is accelerated.

A water pump is arranged in the water supply mechanism 28 in a penetrating way, and the insect killing cavity 20 is filled with insect killing agent; the water pump can continuously supply water to the water supply mechanism 28, and the insecticide can kill flying insects in the farmland.

The pesticide supply cavity is filled with pesticide; the pesticide filled in the pesticide supply cavity can be used for providing a certain disinsection effect on crops, so that the crops can thrive.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a semi-automatic backpack pesticide sprinkler, includes base (1), its characterized in that: the air-purifying device is characterized in that a cleaning mechanism (4) is arranged above the base (1), a spraying mechanism (2) is arranged on one side of the cleaning mechanism (4), an air exhausting mechanism (24) is arranged inside the base (1), and a water supply mechanism (28) is arranged above the base (1).

2. The semi-automatic backpack pesticide spraying device of claim 1 wherein: clean mechanism (4) are connected in the top of base (1) through the bearing, the top and the bottom welding of clean mechanism (4) have the teeth of a cogwheel, one side of clean mechanism (4) is connected with driven gear (5) through the bearing, the top welding of base (1) has the folding rod, rack (6) have been cup jointed in the sliding on the folding rod, the one end welding of rack (6) has joint pole (7), the one end welding of base (1) top has the knee, the inside of spraying mechanism (2) is worn to locate by the one end of knee, helicla flute (8) have been seted up to the surface of spraying mechanism (2), spraying mechanism (2) inside is connected with pesticide chamber (3) through the bearing, the one side welding of pesticide chamber (3) has the shower nozzle, the left end position under the left end of spraying mechanism (2) is worn to locate by the shower nozzle.

3. The semi-automatic backpack pesticide spraying device of claim 2 wherein: spraying mechanism (2) inside is fixed with supplies the medicine chamber, the confession medicine mouth has been seted up to one side in confession medicine chamber, the one side in pesticide chamber (3) has been seted up into the medicine mouth, the top welding of knee has threaded rod (11), the thread groove has been seted up on the inner wall in pesticide chamber (3), the inside joint of thread groove has slider (12), the right side slip of pesticide chamber (3) has cup jointed activity dish (10), the bottom of slider (12) welds in the top of activity dish (10), the inside of activity dish (10) is worn to locate by threaded rod (11), the screw thread has been seted up to the junction of activity dish (10) and threaded rod (11).

4. A semi-automatic backpack pesticide spraying apparatus as set forth in claim 3 wherein: driven gear (5) inside is fixed with deinsectization chamber (20), one side welding in deinsectization chamber (20) has medicament pipeline (19), clean mechanism (4) internal weld has clean chamber (14), clean chamber (14) both ends are fixed with transfer chamber (18), the one end through connection of transfer chamber (18) has the aperture, the welding has cylinder (15) on the inner wall of clean mechanism (4), piston (16) have been cup jointed in the inside slip of cylinder (15), the top welding of piston (16) has arc cover (17), the both ends of arc cover (17) and the inner wall of clean chamber (14) contact.

5. The semi-automatic backpack pesticide spraying device of claim 4 wherein: the utility model discloses a fan, including base (1), air duct (21), side dryer (22), exhaust mechanism (24) are welded to the upper end welding of base (1), the one end through connection of exhaust mechanism (24) has the air-blower, the inside upper end of base (1) is connected with spring (27), the bottom welding of spring (27) has trapezoidal piece (23), the bottom welding of trapezoidal piece (23) has the stock, the top welding of stock has sponge piece (25), sponge piece (25) are in the below of base (1).

6. The semi-automatic backpack pesticide spraying device of claim 5 wherein: the welding of rack (6) below has the jib, the bottom welding of jib has flexible pipeline, flexible pipeline's top is connected with push pedal (33), water supply mechanism (28) weld in one side of folding rod, slide (29) have been cup jointed in the inside slip of water supply mechanism (28), the top welding of slide (29) has stripper plate (30), one side of stripper plate (30) is connected with spring two (31), the one end of spring two (31) is connected in the top of water supply mechanism (28), pressure valve (32) are installed to the centre of flexible pipeline, the bottom of pressure valve (32) is connected with sponge piece two (34), water supply mechanism (28) link to each other with supplying medicine chamber link up, one side through connection of water supply mechanism (28) has the water pump.

7. The semi-automatic backpack pesticide spraying device of claim 6 wherein: the cleaning cavity (20) is filled with a cleaning agent, and alcohol is mixed in the cleaning agent.

8. The semi-automatic backpack pesticide spraying device of claim 7 wherein: the top end of the trapezoidal block (23) is welded with a magnetic block (26).

9. The semi-automatic backpack pesticide spraying device of claim 8 wherein: a water pump is arranged in the water supply mechanism (28) in a penetrating mode, and a pesticide is filled in the pest killing cavity (20).

10. The semi-automatic backpack pesticide spraying device of claim 9 wherein: the pesticide supply cavity is filled with pesticide.