CN109329256B - Anti-drift knapsack sprayer - Google Patents

Abstract

The invention discloses an anti-drifting backpack type spraying device, which comprises: including the water tank, locate bearing the bandage on the water tank and locate the pipe that absorbs water in the water tank, the sealed water tank that passes that absorbs water of tub, it has the spray lance to wear out the end intercommunication, and the free end intercommunication shower nozzle of spray lance, the shower nozzle includes: a flow-dividing column; a vibration chamber; the spraying mechanism comprises a cylindrical joint, the joint is communicated with the vibration cavity and uniformly penetrates through the joint, the joint is provided with a plurality of flow guide cavities, each flow guide cavity comprises an inverted circular table cavity and a cylindrical cavity, the inverted circular table cavity and the cylindrical cavity are arranged along the direction of the interface, the bottom end of the cylindrical cavity is coaxially communicated with a flow guide pipe, a blowing pipe is connected onto each flow guide pipe, steel wires enabling the blowing pipe to be rolled up are arranged on the blowing pipe, and mist outlet holes are formed in the flow guide pipe and the blowing pipe at equal intervals. The invention has the advantages of reducing the spraying granularity of the spraying liquid, increasing the absorption effect of plants and reducing the drift loss caused by the reduction of the spraying granularity.

Description

Anti-drift knapsack sprayer

technical field

The present invention relates to the field of nebulizer devices. More specifically, the present invention relates to an anti-drift knapsack spray device.

Background technique

At present, in order to remove the damage caused by foliar diseases and insect pests to crops, crop planting needs to use pesticides, pesticides and herbicides. For traditional small-scale home planting, knapsack sprayers are often used, and knapsack sprayers have the following problems :

First, because the operator directly relies on the operator's arm to shake the handle up and down to pressurize the liquid spray, the operator is easily fatigued, resulting in uneven pressure during spraying;

Second, the particle size of the spray droplets sprayed by the nozzle is too large, resulting in poor absorption, which directly affects the spray effect. Although the existing nozzle can provide a small particle spray effect, first of all, its structure is too complicated and is not suitable for traditional small-scale home planting, and the particles If it is too small, the spraying liquid is easily affected by wind and other influences during the spraying process, resulting in drift phenomenon and reducing the utilization rate of pesticides.

SUMMARY OF THE INVENTION

An object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages which will be explained later.

Another object of the present invention is to provide an anti-drift knapsack spray device, which reduces the spray particle size of the spray liquid, increases the absorption effect of plants, and reduces the drift loss caused by the reduction of the spray particle size.

In order to achieve these objects and other advantages according to the present invention, an anti-drift knapsack spray device is provided, comprising: a water tank, a knapsack strap provided on the water tank, and a water suction pipe provided in the water tank, the The water suction pipe is sealed through the water tank, the piercing end is connected with a spray rod, and the free end of the spray rod is connected with the spray head;

The spray bar includes a hose connected with the suction pipe and a rigid pipe connected with the free end of the hose. The inner sidewall of the free end of the rigid pipe expands outward to form a groove, and the sidewall of the groove A first internal thread is provided, and one end of the rigid pipe close to the groove is provided with a second internal thread;

The spray head includes:

A splitter column, which is a cylindrical shape with a side wall with an external thread matching the second internal thread, so that the splitter column is screwed on the free end of the spray rod, and the end of the splitter column protrudes from the rigid pipe end so that a screw cavity is formed between the side wall of the shunt column and the groove, wherein the shunt column is provided with a plurality of liquid spray pipes along the flow path direction, and the liquid spray pipes have a diameter along the flow path direction gradually become smaller

The vibrating cavity is a cylindrical shape with one end open, and the outer side wall of the vibrating cavity close to the opening is recessed inward to form a threaded portion matching the screw cavity, and the outer side wall of the threaded portion has a matching first internal thread. External thread, so that the vibration cavity is screwed with the rigid pipe, and the other end of the vibration cavity is horizontally fixed with a plurality of elastic pieces, and the multiple elastic pieces are in one-to-one correspondence with the plurality of liquid spray pipes, wherein the bottom end of the vibration cavity faces the A cylindrical interface is formed by extending outward, the central axis of the interface is perpendicular to the central axis of the vibration cavity, the inner side wall of the bottom end of the interface is condensed inward to form a first connecting portion, and the side wall of the first connecting portion is provided with a third internal thread;

The spraying mechanism includes a cylindrical joint, the outer side wall of the top end of the joint is recessed to form a second connecting part, and the outer side wall of the second connecting part has an external thread matching the third internal thread, so that the joint can be connected with the interface Coaxial screw connection, a plurality of guide cavities are arranged evenly through the joint, each guide cavity includes an inverted circular truncated cavity and a cylindrical cavity arranged along the direction away from the interface, and the bottom end of the cylindrical cavity is coaxially communicated and arranged A guide pipe, each guide pipe is connected with a blower pipe, and the blower pipe is provided with a steel wire that makes the blower pipe roll up, wherein, the guide pipe and the blower pipe are arranged at intervals There are fog holes.

Preferably, the top of the water tank has a rectangular opening, through which the seal is fixed with a quadrangular prism-shaped receiving cylinder, the top of the receiving cylinder is open and condensed inward to form a rectangular constriction, and the seal slides through the opening. The constriction is provided with a pressing cylinder with an open bottom end, the bottom end of the outer side wall of the pressing cylinder is circumferentially provided with a rubber ring, the outer side wall of the rubber ring is in sliding contact with the inner side wall of the receiving cylinder, and the bottom end of the receiving cylinder is in contact with the inner side wall of the receiving cylinder. A return spring is fixed coaxially between the top ends of the pressing cylinders, the top of the pressing cylinders is provided with a first one-way valve for allowing outside air to enter the receiving cylinder, and the bottom end of the receiving cylinder is provided with a first one-way valve for allowing the receiving cylinder The second one-way valve for the inner gas to enter the water tank;

It also includes: a cam mechanism, which includes a motor fixed on the water tank, a horizontal rod fixed coaxially with the motor output shaft, and a cam with a center of the circle fixed on one end of the horizontal rod, wherein the cam In contact with the center of the top end of the pressing cylinder, when the cam rotates and presses the top of the pressing cylinder with the greatest distance from the horizontal rod, the top of the pressing cylinder is located above the receiving cylinder, and the return spring is in a compressed state.

Preferably, the end openings of the plurality of liquid spray pipes are evenly distributed on the corresponding ends of the distribution column.

Preferably, the length of the spray pipe is 50-60mm, the diameter of one end of the spray pipe located inside the rigid pipe is 4-5mm, and the diameter of the end of the spray pipe located outside the rigid pipe is 1-2mm ;

The distance between the free end of the shrapnel and the corresponding liquid spray pipe is 7-9mm, the length of the shrapnel is 30-40cm, the thickness is 0.5mm, and the width is equal to the aperture of the liquid spray pipe at the outer end of the rigid pipe.

Preferably, a rubber layer is covered at the abutment between the shunt column and the vibration cavity.

Preferably, the diameter of the interface is slightly larger than the length of the elastic piece.

The present invention includes at least the following beneficial effects:

First, the sprinkler head is composed of three parts: the shunt column, the vibration cavity and the spraying mechanism. The shunt column is sealed and screwed at the free end of the spray rod and the free end of the spray rod to form a screw cavity, which enhances the screw setting effect of the vibration cavity and facilitates the operation. Overall disassembly for repair and replacement.

Second, the aperture of the liquid spray pipe gradually becomes smaller along the flow path, which enhances the spraying speed of the liquid medicine from the liquid spray pipe. With the setting of the shrapnel, the sprayed liquid liquid collides with the shrapnel, which generates vibration, enhances the atomization effect, and reduces the size of the liquid. Reduce the particle size of fog droplets and enhance the absorption effect of plants on the pharmaceutical industry.

Third, the setting of the blowing dragon pipe of the spraying mechanism enables the elongated blowing dragon pipe to enter the inside of the crop when the spray is manually operated, and the medicinal liquid passing through the blowing dragon pipe and the diversion pipe has a good contact effect with the crop, and effectively avoids fog droplets. The drift problem caused by the smaller particle size. At the same time, when the liquid is not sprayed, the blower pipe will roll up by itself under the action of the steel wire, and the operator does not need to raise the spray rod, that is, the operator's arm can be kept at the same height. free walking.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

1 is a schematic structural diagram of the anti-drift knapsack spray device according to one of the technical solutions of the present invention;

FIG. 2 is a schematic structural diagram of the nozzle according to one of the technical solutions of the present invention.

The reference signs are: water tank 1; suction pipe 10; spray rod 2; hose 20; rigid pipe 21; groove 22; spray head 3; distribution column 4; screw cavity 40; Connection part 50; shrapnel 51; interface 52; first connection part 53; spray mechanism 6; joint 60; second connection part 61; 66; fog hole 67; rectangular opening 7; receiving cylinder 70; constriction 71; pressing cylinder 72; rubber ring 73; return spring 74; cam mechanism 8; motor 80;

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not assign the presence or addition of one or more other elements or combinations thereof.

As shown in FIGS. 1-2 , the present invention provides an anti-drift knapsack spray device, comprising a water tank 1 , a knapsack strap arranged on the water tank 1 , and a water suction pipe 10 arranged in the water tank 1 , and the water suction pipe 10 The length of the water tank 1 is set to be in contact with the lowest end of the water tank 1, the suction pipe 10 is sealed through the water tank 1, the piercing end is connected with the spray rod 2, and the free end of the spray rod 2 is connected with the spray head 3;

The spray bar 2 includes a hose 20 connected with the suction pipe 10 (the hose 20 is arranged to realize the movement space of the rigid pipe 21 on the basis of manual operation), and the free end of the hose 20. The rigid tube 21 is connected and arranged. The inner side wall of the free end of the rigid tube 21 expands outward (toward the direction of the outer side wall) to form a groove 22. One end of the groove 22 is an opening, and the side wall of the groove 22 is provided with a groove 22. The first internal thread, the end of the rigid pipe 21 close to the groove 22 (that is, the part where the splitter column 4 is in contact with the rigid pipe 21 in FIG. 2 ) is provided with a second internal thread;

The nozzle 3 includes:

The shunt column 4 is a cylindrical shape with an external thread matching the second internal thread on the side wall, and the configuration of the external thread enables the shunt column 4 to be screwed on the free end of the spray rod 2 (rigid pipe 21 ) through the external thread, And the end of the shunt column 4 protrudes from the end of the rigid tube 21 , that is, when the shunt column 4 is completely screwed on the rigid tube 21 , the free end of the shunt column 4 protrudes beyond the rigid tube 21 . 21 free end, so that a screw cavity 40 is formed between the side wall of the shunt column 4 and the groove 22, wherein the shunt column 4 runs through the direction of the flow path (the flow direction of the liquid medicine in the shunt column 4) A plurality of liquid spray pipes 41 are provided, and the plurality of liquid spray pipes 41 are evenly arranged, and the diameter of the liquid spray pipes 41 gradually becomes smaller along the direction of the flow path;

The vibration cavity 5 is cylindrical with one end open, and the outer side wall of the vibration cavity 5 close to the opening is recessed inward so that the end of the vibration cavity 5 forms a screw connection portion 50 matching the screw cavity 40 . The outer side wall of the connecting portion 50 has an outer thread matching the first inner thread, so that the vibration chamber 5 is screwed with the rigid tube 21 , and the other end of the vibration chamber 5 is horizontally fixed with a plurality of elastic pieces 51 , and a plurality of elastic pieces 51 One-to-one correspondence with the plurality of liquid spray pipes 41, wherein the bottom end of the vibration chamber 5 extends outward to form a cylindrical interface 52, the central axis of the interface 52 is perpendicular to the central axis of the vibration chamber 5, and the interface The inner side wall of the bottom end of 52 is condensed inward to form a first connecting portion 53, and the side wall of the first connecting portion 53 is provided with a third internal thread;

The spraying mechanism 6 includes a cylindrical joint 60, the outer side wall of the top end of the joint 60 is recessed to form a second connecting part 61, and the outer side wall of the second connecting part 61 has an external thread matching the third internal thread, so that the The joint 60 is screwed coaxially with the interface 52 , and a plurality of guide cavities 62 are evenly arranged throughout the joint 60 . 64, the bottom end of the cylindrical cavity 64 is coaxially communicated with a guide pipe 65, each guide pipe 65 is connected with a blower pipe 66, and the blower pipe 66 is provided with a blower pipe 66 to roll up. Steel wire, wherein, mist outlet holes 67 are provided at intervals on both the guide pipe 65 and the blower pipe 66 .

In this technical solution, the bottom end of the water tank 1 can be inclined downward through the plate body to form the lowest point. The length of the suction pipe 10 in the water tank 1 is slightly greater than the height of the water tank 1. The bottom of the suction pipe 10 The end is provided with a gravity suction head, so that the bottom end of the suction pipe 10 is located at the lowest point of the bottom end of the water tank 1 under normal conditions, which is convenient for the full use of the medicinal liquid in the water tank 1. During use, the top of the water tank 1 also includes a set of There is a filter screen in the charging hole. The operator carries the spray device on his back through the back strap, starts the air pump of the spray device, and makes the liquid medicine pass through the suction pipe in turn. 10. The spray rod 2 and the spray pipe 41 are atomized after the liquid through the spray pipe 41 collides with the shrapnel 51, and further flows into the guide pipe 65 and the blower pipe through the interface 52, the joint 60 and the guide cavity 62. 66, the pressure increase drives the blowing dragon pipe 66 to extend, and when the nozzle 3 is located above the crop, the elongated blowing dragon pipe 66 will enter the interior of the crop, so that the medicinal liquid passing through the blowing dragon pipe 66 and the guide pipe 65 is in contact with the crop. . By adopting this technical solution, firstly, the spray head 3 is assembled from three parts: the distribution column 4, the vibration chamber 5 and the spray mechanism 6. The distribution column 4 is sealed and screwed on the free end of the spray rod 2 to form a screw connection with the free end of the spray rod 2. The cavity 40 enhances the screwing effect of the vibration cavity 5, which is convenient for the overall disassembly, repair and replacement; second, the diameter of the liquid spray pipe 41 gradually becomes smaller along the direction of the flow path, which enhances the spraying speed of the liquid medicine from the liquid spray pipe 41, and cooperates with the shrapnel. The setting of 51, the sprayed liquid collides with the shrapnel 51, generates vibration, enhances the atomization effect, refines the particle size of the mist droplets, and enhances the absorption effect of plants on the pharmaceutical industry; third, the spraying mechanism 6 blows the dragon pipe 66 The setting makes it possible that the elongated blowing dragon pipe 66 will enter the inside of the crop when the spraying is manually operated, and the medicinal liquid passing through the blowing dragon pipe 66 and the diversion pipe 65 has a good contact effect with the crop, effectively preventing the droplet particle size from becoming smaller. At the same time, when the liquid medicine is not sprayed, the blowing dragon pipe 66 will roll up by itself under the action of the steel wire, and the operator does not need to lift the spray rod 2, that is, the freedom of the operator's arm at the same height is realized. walk.

In another technical solution, the top of the water tank 1 has a rectangular opening 7, and a quadrangular prism-shaped receiving cylinder 70 is sealed and fixed through the rectangular opening 7, and the height of the top of the receiving cylinder 70 is higher than that of the water tank. 1. The height of the top end, the top end of the receiving cylinder 70 is open and condensed horizontally inward to form a rectangular constriction 71, and a pressing cylinder 72 with an open bottom end is provided through the constriction 71 in a sealing and sliding manner. The bottom end of the outer side wall is provided with a rubber ring 73 in the circumferential direction, and the outer side wall of the rubber ring 73 is in sliding contact with the inner side wall of the receiving cylinder 70, so that the pressing cylinder 72 can be sealed up and down relative to the receiving cylinder 70. A return spring 74 is fixed coaxially between the bottom end of the receiving cylinder 70 and the top end of the pressing cylinder 72, and the top of the pressing cylinder 72 is provided with a first one-way valve for allowing outside air to enter the receiving cylinder 70. The bottom end of the receiving cylinder 70 is provided with a second one-way valve for allowing the gas in the receiving cylinder 70 to enter the water tank 1;

It also includes: a cam 82 mechanism 8, which includes a motor 80 fixed on the water tank 1, a horizontal rod 81 fixed coaxially with the output shaft of the motor 80, and a circle center fixed on one end of the horizontal rod 81 The cam 82, wherein the cam 82 is in contact with the center of the top end of the pressing cylinder 72, when the cam 82 rotates and presses the top of the pressing cylinder 72 with the maximum distance from the horizontal rod 81, the top of the pressing cylinder 72 is located at the top of the pressing cylinder 72. Above the receiving cylinder 70, the return spring 74 is in a compressed state. By adopting this technical solution, the pressing cylinder 72 is effectively driven by the rotation of the motor 80 to move up and down relative to the receiving cylinder 70, and the operator is very easy to fatigue caused by traditional manual pressing. The problem of uneven drug pressure.

In another technical solution, the end openings of the plurality of liquid spray pipes 41 are evenly distributed on the corresponding ends of the shunt column 4. This technical solution improves the atomization effect and enhances the space utilization rate.

In another technical solution, the length of the liquid spraying pipe 41 is 50-60 mm, the diameter of one end of the liquid spraying pipe 41 located in the rigid pipe 21 is 4-5 mm, and the liquid spraying pipe 41 is located in the The diameter of the outer end of the rigid tube 21 is 1-2mm;

The distance between the free end of the elastic piece 51 and the corresponding liquid spray pipe 41 is 7-9 mm, the length of the elastic piece 51 is 30-40 cm, the thickness is 0.5 mm, and the width is equal to that the liquid spray pipe 41 is located outside the rigid pipe 21 The aperture at one end adopts this technical solution to enhance the atomization effect.

In another technical solution, a rubber layer is covered at the abutment between the shunt column 4 and the vibration cavity 5, and the sealing effect is enhanced by adopting this technical solution.

In another technical solution, the diameter of the interface 52 is slightly larger than the length of the elastic piece 51, and this technical solution is used to facilitate the spraying of the drug after atomization.

The number of apparatuses and processing scales described here are intended to simplify the description of the present invention. Applications, modifications and variations to the anti-drift knapsack spray device of the present invention will be apparent to those skilled in the art.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (6)

1. An anti-drift knapsack spray device, including a water tank, a knapsack strap set on the water tank, and a suction pipe set in the water tank, the suction pipe is sealed through the water tank, and the piercing end is connected with a spray rod , the free end of the spray rod communicates with the spray head, and is characterized in that: The spray bar includes a hose connected with the suction pipe and a rigid pipe connected with the free end of the hose. The inner sidewall of the free end of the rigid pipe expands outward to form a groove, and the sidewall of the groove A first internal thread is provided, and one end of the rigid pipe close to the groove is provided with a second internal thread; The spray head includes: A splitter column, which is a cylindrical shape with a side wall with an external thread matching the second internal thread, so that the splitter column is screwed on the free end of the spray rod, and the end of the splitter column protrudes from the rigid pipe end so that a screw cavity is formed between the side wall of the shunt column and the groove, wherein the shunt column is provided with a plurality of liquid spray pipes along the flow path direction, and the liquid spray pipes have a diameter along the flow path direction gradually become smaller The vibrating cavity is a cylindrical shape with one end open, and the outer side wall of the vibrating cavity close to the opening is recessed inward to form a threaded portion matching the screw cavity, and the outer side wall of the threaded portion has a matching first internal thread. External thread, so that the vibration cavity is screwed with the rigid pipe, and the other end of the vibration cavity is horizontally fixed with a plurality of elastic pieces, and the multiple elastic pieces are in one-to-one correspondence with the plurality of liquid spray pipes, wherein the bottom end of the vibration cavity faces the A cylindrical interface is formed by extending outward, the central axis of the interface is perpendicular to the central axis of the vibration cavity, the inner side wall of the bottom end of the interface is condensed inward to form a first connecting portion, and the side wall of the first connecting portion is provided with a third internal thread; The spraying mechanism includes a cylindrical joint, the outer side wall of the top end of the joint is recessed to form a second connecting part, and the outer side wall of the second connecting part has an external thread matching the third internal thread, so that the joint can be connected with the interface Coaxial screw connection, a plurality of guide cavities are arranged evenly through the joint, each guide cavity includes an inverted circular truncated cavity and a cylindrical cavity arranged along the direction away from the interface, and the bottom end of the cylindrical cavity is coaxially communicated and arranged A guide pipe, each guide pipe is connected with a blower pipe, and the blower pipe is provided with a steel wire that makes the blower pipe roll up, wherein, the guide pipe and the blower pipe are arranged at intervals There are fog holes. 2 . The anti-drift knapsack spray device according to claim 1 , wherein the top of the water tank has a rectangular opening, and a quadrangular prism-shaped receiving cylinder is fixedly sealed through the opening, and the top of the receiving cylinder is open. 3 . The opening is arranged and condensed inward to form a rectangular constriction, and a pressing cylinder with an open bottom end is provided through the constriction, and a rubber ring is circumferentially provided at the bottom end of the outer side wall of the pressing cylinder. The inner side wall of the receiving cylinder is in sliding contact, a return spring is fixed coaxially between the bottom end of the receiving cylinder and the top end of the pressing cylinder, and the top end of the pressing cylinder is provided with a first unit for allowing the outside air to enter the receiving cylinder. A direction valve, the bottom end of the receiving cylinder is provided with a second one-way valve for allowing the gas in the receiving cylinder to enter the water tank; It also includes: a cam mechanism, which includes a motor fixed on the water tank, a horizontal rod fixed coaxially with the motor output shaft, and a cam with a center of the circle fixed on one end of the horizontal rod, wherein the cam In contact with the center of the top end of the pressing cylinder, when the cam rotates and presses the top of the pressing cylinder with the greatest distance from the horizontal rod, the top of the pressing cylinder is located above the receiving cylinder, and the return spring is in a compressed state. 3 . The anti-drift knapsack spray device according to claim 1 , wherein the end openings of the plurality of liquid spray pipes are evenly distributed on the corresponding ends of the distribution column. 4 . 4. The anti-drift knapsack spray device according to claim 3, wherein the length of the spray pipe is 50-60mm, and the diameter of one end of the spray pipe located in the rigid pipe is 4-5mm. The diameter of one end of the spray pipe located outside the rigid pipe is 1-2mm; The distance between the free end of the shrapnel and the corresponding liquid spray pipe is 7-9mm, the length of the shrapnel is 30-40cm, the thickness is 0.5mm, and the width is equal to the aperture of the liquid spray pipe at the outer end of the rigid pipe. 5 . The anti-drift knapsack spray device according to claim 1 , wherein a rubber layer is covered at the abutment between the diverter column and the vibration chamber. 6 . 6 . The anti-drift knapsack spray device according to claim 4 , wherein the diameter of the interface is slightly larger than the length of the elastic piece. 7 .

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