A hand-held pollination gun for litchi trees

Abstract

The present invention relates to the field of pollination guns, and particularly to a handheld pollination gun for litchi trees, which includes a pollination gun, a telescopic powder spraying tube, a nozzle, a squeezing ring, an adjustment switch, etc.; a powder inlet tube is arranged inside the pollination gun; a telescopic powder spraying tube is installed on the pollination gun, and the telescopic powder spraying tube is communicated with the powder inlet tube; the left end opening of the telescopic powder spraying tube is fixedly connected with a nozzle; the left opening of the nozzle is a pollination port; the nozzle is composed of a fixed part, four rotating rods and four first connecting parts, the fixed part is fixedly connected with the telescopic powder spraying tube, and the first connecting part is made of an elastic deformation material; an adjustment switch is installed on the pollination gun. The present invention realizes the frequent expansion and contraction of the pollination port of the nozzle during the process of manually holding the pollination gun for pollination, which is beneficial to the shedding of the adhered pollen, reduces the possibility of blockage of the pollination port of the nozzle, and ensures the normal progress of pollination.

Description

Technical Field

[0001] The present invention relates to the field of pollination guns, and particularly to a handheld pollination gun for litchi trees. Background Art

[0002] Existing pollination guns are designed to meet the pollination requirements of flowers of different sizes. They usually have a structure inside for adjusting the size of the material outlet. Generally, by rotating an adjusting ring inside the pollination gun, there are several powder outlets with different aperture sizes on the adjusting ring. By rotating the adjusting ring, the aperture size of the powder outlet is changed, or by sliding a telescopic tube, when the telescopic tube is pulled out or pushed into the material outlet tube, the space at the material outlet will increase or decrease correspondingly, so as to control the outflow of pollen. However, due to the relatively large viscosity of the pollen of litchi trees, and when the existing pollination gun adjusts the size of the material outlet, the structure of the material outlet remains static. Therefore, when pollen passes through the material outlet, the pollen will gradually adhere and accumulate at the material outlet part, causing powder jamming, affecting the normal spraying of pollen, and resulting in uncontrollable pollination amount. Summary of the Invention

[0003] In order to overcome the drawback that when the existing pollination gun adjusts the size of the material outlet, the structure of the material outlet remains static. Therefore, when a large amount of pollen passes through the material outlet, the pollen will gradually adhere and accumulate at the material outlet part, thus affecting the normal spraying of pollen and resulting in uncontrollable pollination amount, the present invention provides a handheld pollination gun for litchi trees.

[0004] The technical solution is as follows: A handheld pollination gun for litchi trees includes a pollination gun and a telescopic powder spraying tube; an inlet powder tube is arranged inside the pollination gun; a telescopic powder spraying tube is installed on the pollination gun, and the telescopic powder spraying tube is communicated with the inlet powder tube; it further includes a nozzle, a pressing ring, an adjusting switch, a driving component and a windproof component; the left end pipe orifice of the telescopic powder spraying tube is fixedly connected with the nozzle; the left side opening of the nozzle is a pollination opening; the nozzle is composed of a fixed part, four rotating rods and four first connecting parts. The fixed part is fixedly connected with the telescopic powder spraying tube, and the first connecting part is made of an elastic deformation material; a driving component is installed on the fixed part; the driving component is connected with a pressing ring, and the driving component is used to drive the pressing ring to adjust the size of the nozzle; a corrugated pipe is arranged between the left side of the telescopic powder spraying tube and the pressing ring, and the corrugated pipe is communicated with the telescopic powder spraying tube; an adjusting switch is installed on the pollination gun, and the adjusting switch is connected with the driving component through an electric signal; a windproof component for preventing pollen from being blown away is installed on the fixed part.

[0005] Preferably, the windproof component includes a mounting ring and a windproof cover; a mounting ring is installed on the fixed part of the nozzle; a windproof cover for preventing pollen from being blown away is connected to the mounting ring.

[0006] Preferably, it further includes extrusion blocks; several extrusion blocks are fixedly connected to the nozzle, and each extrusion block is fixedly connected to the adjacent rotating rod on the nozzle; the wind shield is composed of six support rods and six shielding cloths, the shielding cloth is elastic, the extrusion block contacts the support rod of the wind shield, and the support rod of the wind shield is rotatably connected to the fixing part.

[0007] Preferably, the distance from the left side of the wind shield to the nozzle is the optimal distance for suitable pollination.

[0008] Preferably, it further includes a connecting ball; the connecting ball is rotatably connected to the pollination gun with damping, and the connecting ball is set as a through structure; a second connecting part is arranged on the connecting ball, the telescopic powder spraying pipe is fixedly connected to the second connecting part, and the second connecting part is set as a through structure; the telescopic powder spraying pipe is communicated with the powder inlet pipe through the connecting ball and the second connecting part.

[0009] Preferably, it further includes a limiting block; the limiting block is slidably connected to the pollination gun, and the pollination gun is screwed with a pressing part through a mounting block.

[0010] Preferably, a rubber layer is arranged at the contact part between the limiting block and the connecting ball.

[0011] Preferably, it further includes a water inlet pipe; a water inlet pipe for facilitating cleaning is communicated with the second connecting part; an electromagnetic valve is arranged at the powder inlet pipe of the pollination gun.

[0012] Preferably, the mounting ring and the fixing part of the nozzle are detachably connected; a limiting rod is inserted into the mounting ring, and the limiting rod is screwed with the fixing part.

[0013] The beneficial effects of the present invention are as follows: during the process of manually holding the pollination gun for pollination, the pollination port of the nozzle expands and contracts frequently, which is beneficial to the shedding of the adhered pollen, reduces the possibility of blockage of the pollination port of the nozzle, and ensures the normal progress of pollination;

[0014] The wind shield shields and protects the periphery of the nozzle, blocks the wind, reduces the influence of the wind on the pollen. At the same time, the wind shield blocks most of the branches and leaves of the litchi tree, so as to prevent the branches and leaves with dew from contacting the pollination port of the nozzle to the greatest extent, avoid the pollination port of the nozzle being in a wet state, resulting in an increase in the adhesion strength of the pollen at the pollination port of the nozzle and affecting the subsequent pollination effect;

[0015] By extruding the adjacent support rods of the wind shield with the extrusion blocks, when the pollination port of the nozzle expands and contracts, the wind shield will also expand and contract correspondingly. Compared with the wind shield pollinating in a fixed posture, adjusting the wind shield correspondingly according to the size of the flower cluster can effectively avoid over-pollinating on the same flower cluster, and at the same time, the pollen can be concentrated and sprayed in the area converged by the wind shield, ensuring the stability of the pollination effect and improving the pollination efficiency;

[0016] Scratch the inner wall of the wind shield through the extrusion block to clean the pollen adhering to the inner wall of the wind shield, thereby preventing the residual pollen from affecting the pollination success rate of the flower bouquet to the greatest extent. Brief Description of the Drawings

[0017] Figure 1 Schematic three-dimensional structure diagram of the handheld pollination gun for litchi trees of the present invention;

[0018] Figure 2 Schematic three-dimensional structure diagram of the combination of the nozzle and the extrusion block of the present invention;

[0019] Figure 3 Combined cross-sectional view of the mounting ring and the wind shield of the present invention;

[0020] Figure 4 Schematic three-dimensional structure diagram of the combination of the extrusion ring and the driving component of the present invention;

[0021] Figure 5 Schematic three-dimensional structure diagram of the combination of the connecting ball, the limiting block and the water inlet pipe of the present invention;

[0022] Figure 6 Cross-sectional view of the pollination gun of the present invention;

[0023] Figure 7 Schematic three-dimensional structure diagram of the combination of the mounting ring and the wind shield of the present invention.

[0024] Description of the reference numerals: 1 - pollination gun, 1001 - pollen inlet pipe, 2 - telescopic powder spraying pipe, 2001 - corrugated pipe, 3 - nozzle, 3001 - fixing part, 3002 - rotating rod, 3003 - first connecting part, 4 - extrusion ring, 5 - adjustment switch, 101 - driving part, 102 - first connecting rod, 103 - second connecting rod, 201 - mounting ring, 20101 - limiting rod, 202 - wind shield, 203 - extrusion block, 301 - connecting ball, 30101 - second connecting part, 302 - limiting block, 30201 - pressing part, 303 - water inlet pipe. Detailed Description of the Invention

[0025] The following is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly.

[0026] Example 1: As Figures 1-4 and Figure 7 shown, a handheld pollination gun for litchi trees includes a pollination gun 1 and a telescopic powder spraying pipe 2; an inlet powder pipe 1001 is arranged inside the pollination gun 1; a telescopic powder spraying pipe 2 is installed on the pollination gun 1, and the telescopic powder spraying pipe 2 is communicated with the inlet powder pipe 1001;

[0027] It also includes a nozzle 3, a pressing ring 4, an adjustment switch 5, a driving component and a windproof component; the left end nozzle of the telescopic powder spraying pipe 2 is fixedly connected with the nozzle 3; the left opening of the nozzle 3 is a pollination opening; the nozzle 3 is composed of a fixing part 3001, four rotating rods 3002 and four first connecting parts 3003, the fixing part 3001 is fixedly connected with the telescopic powder spraying pipe 2, and the first connecting part 3003 is made of an elastically deformable material such as silica gel and rubber; a driving component is installed on the fixing part 3001; the driving component is connected with the pressing ring 4; a corrugated pipe 2001 is arranged between the left side of the telescopic powder spraying pipe 2 and the pressing ring 4, and the corrugated pipe 2001 is communicated with the telescopic powder spraying pipe 2; an adjustment switch 5 is installed on the pollination gun 1, and the adjustment switch 5 is connected with the driving component through an electrical signal, and the driving component is controlled to operate by moving the adjustment switch 5; a windproof component is installed on the fixing part 3001.

[0028] The driving component includes a driving part 101, a first connecting rod 102 and a second connecting rod 103; two driving parts 101 which are symmetrically arranged up and down are fixedly connected to the fixing part 3001 of the nozzle 3, and the driving part 101 is an electric push rod; the telescopic end of each driving part 101 is fixedly connected with a first connecting rod 102, and each first connecting rod 102 penetrates through the fixing part 3001; a second connecting rod 103 is fixedly connected to the left side of each first connecting rod 102, and the left side of each second connecting rod 103 is fixedly connected with the pressing ring 4. The driving part 101 drives the first connecting rod 102, the second connecting rod 103 and the pressing ring 4 to move left and right, so as to press the nozzle 3 to change the size of the nozzle 3.

[0029] The windproof component includes a mounting ring 201 and a windproof cover 202; the mounting ring 201 is installed on the fixing part 3001 of the nozzle 3; the windproof cover 202 is connected to the mounting ring 201.

[0030] It also includes a pressing block 203; four pressing blocks 203 are fixedly connected to the nozzle 3, and each pressing block 203 is fixedly connected with an adjacent rotating rod 3002 on the nozzle 3; the windproof cover 202 is composed of six support rods and six shielding cloths, the shielding cloth is elastic, the pressing block 203 contacts the support rods of the windproof cover 202, and the support rods of the windproof cover 202 are rotatably connected to the fixing part 3001.

[0031] The distance from the left side of the windproof cover 202 to the nozzle 3 is the optimal distance for suitable pollination.

[0032] The working process of this embodiment is as follows:

[0033] The pollination gun 1 is composed of a pollen storage container, a power device (an impeller and a motor), a control device (control buttons and electronic components), a telescopic powder spraying tube 2, and a nozzle 3. The flowers of litchi trees are small and delicate, and several tiny flowers gather into flower clusters of different sizes. Before manually using the pollination gun 1 to pollinate the flower clusters on the litchi tree, according to the distance between the flower cluster and the nozzle 3, if the distance is too far, the end of the telescopic powder spraying tube 2 is manually pulled out to extend the length of the telescopic powder spraying tube 2; if the distance is too close, the end of the telescopic powder spraying tube 2 is manually pressed to shorten the length of the telescopic powder spraying tube 2, so as to adjust the distance between the mouth of the telescopic powder spraying tube 2 and the flower cluster, facilitating the manual spraying of pollen onto the target flower cluster. Then, the control button of the pollination gun 1 is pressed to start the impeller in the pollination gun 1. Through the wind force generated by the high-speed rotation of the impeller, the pollen in the pollen storage container is blown into the telescopic powder spraying tube 2, and finally sprayed onto the flower cluster through the nozzle 3 at the end of the telescopic powder spraying tube 2, thus achieving the pollination of the flowers.

[0034] The existing pollination gun 1 is designed to meet the pollination requirements of flowers of different sizes. Generally, a structure for adjusting the size of the material outlet is provided inside it. Usually, by rotating the adjusting ring inside the pollination gun 1, several powder outlets with different aperture sizes are arranged on the adjusting ring. By rotating the adjusting ring, the aperture size of the powder outlet can be changed, or the telescopic tube can be slid. When the telescopic tube is pulled out or pushed into the material outlet tube, the space at the material outlet will increase or decrease correspondingly, so as to control the outflow of pollen. However, due to the relatively large viscosity of litchi tree pollen, and when the existing pollination gun 1 adjusts the size of the material outlet, the structure of the material outlet remains static. Therefore, when pollen passes through the material outlet, the pollen will gradually adhere to and accumulate at the material outlet part, causing powder jamming, affecting the normal ejection of pollen, and resulting in uncontrollable pollination amount. To solve the above situation, when manually holding the pollination gun 1 to pollinate different flower clusters, it is necessary to adjust the size of the nozzle 3 according to the size of the flower cluster. It should be noted that in the initial state, the pollination port of the nozzle 3 is in the smallest state. At this time, the manual pushes the adjustment switch 5 downward, so that the adjustment switch 5 slides downward on the pollination gun 1, and then controls the driving member 101 to drive the first connecting rod 102, the second connecting rod 103 and the extrusion ring 4 to move leftward, so that the extrusion ring 4 gradually squeezes the rotating rod 3002 on the nozzle 3. At the same time, the corrugated pipe 2001 is stretched. With the extrusion of the extrusion ring 4, the rotating rod 3002 on the nozzle 3 will gradually move outward, and at the same time, the first connecting part 3003 between the rotating rods 3002 will gradually expand outward after being pulled, so that the left pollination port of the nozzle 3 gradually expands. Then, the manual presses the control button of the pollination gun 1, so that the pollen is sprayed into the corrugated pipe 2001 through the nozzle of the telescopic powder spraying pipe 2, and then is sprayed from the nozzle of the corrugated pipe 2001 to the pollination port of the nozzle 3, and finally is sprayed from the pollination port of the nozzle 3 to the flower cluster. By analogy, the manual can control the degree of extrusion of the extrusion ring 4 on the rotating rod 3002 on the nozzle 3 by pushing the adjustment switch 5 downward according to the size of the flower cluster, so as to realize the adjustment of the size of the nozzle 3, so as to meet the pollination requirements of different flower cluster sizes. Further, in the above pollination process, the size of the pollination port of the nozzle 3 will change frequently according to the size of the flower cluster. Compared with the existing method of changing the size of the pollination port of the nozzle 3, in the process of frequent expansion and contraction of the pollination port of the nozzle 3 in the present invention, that is, in the process of expansion and contraction of the first connecting part 3003, it is beneficial to make the adhered pollen fall off, reduce the possibility of blockage of the pollination port of the nozzle 3, and ensure the normal progress of pollination.

[0035] During the pollination process, the external wind will blow the pollen ejected from the nozzle 3, causing the ejected pollen to shift, resulting in some pollen not being able to accurately land on the target flower, reducing the amount of pollen actually reaching the flower and lowering the pollination success rate. When the wind force is strong, the pollen may be blown out of the flower cluster area, seriously affecting the pollination effect. Therefore, to improve the above situation, when manually holding the pollination gun 1 for pollination, the nozzle 3 is shielded and protected by the wind shield 202 around it to block the wind and reduce the impact of the wind on the pollen. At the same time, since the temperature is relatively low and the humidity is relatively high in the morning, the pollen is in a relatively fresh state and has a high activity. Therefore, artificial pollination is usually carried out in the morning. However, dew usually adheres to the branches and leaves of the litchi tree, and the wind shield 202 will block most of the branches and leaves of the litchi tree, thus preventing the dew-attached branches and leaves from contacting the pollination port of the nozzle 3 to the greatest extent, avoiding the pollination port of the nozzle 3 being in a wet state, which increases the firmness of the pollen adhering to the pollination port of the nozzle 3 and affects the subsequent pollination effect. It should be noted that during the pollination process, some pollen will adhere to the inside of the wind shield 202, but since the diameter of the wind shield 202 is much larger than the diameter of the nozzle 3, it will not affect the pollination.

[0036] It should be noted that during pollination, if the pollination port of the nozzle 3 is too close to the flower cluster, the pollen will be sprayed too concentratedly in a local area of the flower cluster, resulting in uneven pollen distribution on the flower surface. If the pollination port of the nozzle 3 is too far from the flower cluster, the pollen will be overly dispersed due to factors such as air resistance during the propagation process, resulting in a reduction in the amount of pollen on the stigma. Therefore, the distance from the pollination port of the nozzle 3 to the flower cluster is crucial. Since the litchi tree is relatively tall, for the flower clusters at higher positions, due to the existence of visual errors, it is difficult for humans to control the distance from the nozzle 3 to the flower cluster, thus affecting the pollination effect of the flower cluster. To solve the above situation, by making the distance from the left side of the wind shield 202 to the nozzle 3 the optimal distance for suitable pollination, when manually pollinating, only need to bring the left side of the wind shield 202 close to the flower cluster to indicate that the distance is suitable for pollination, thus preventing improper distance control during artificial pollination and affecting the pollination effect.

[0037] To further ensure the pollination effect, when the extrusion ring 4 squeezes the rotating rod 3002 of the nozzle 3, the rotating rod 3002 of the nozzle 3 will drive the extrusion block 203 to squeeze the adjacent support rods of the wind shield 202, causing the adjacent support rods to drive the shielding cloth of the wind shield 202 to rotate outward together, so that the left side of the wind shield 202 expands outward in a trumpet shape. Furthermore, when the pollination port of the nozzle 3 expands and contracts, the wind shield 202 will also expand and contract correspondingly. Compared with the wind shield 202 pollinating in a fixed posture, adjusting the wind shield 202 correspondingly according to the size of the flower cluster can effectively avoid over-pollination on the same flower cluster, and at the same time, the pollen can be concentrated and sprayed in the area converged by the wind shield 202, ensuring the stability of the pollination effect and improving the pollination efficiency.

[0038] During the above process, although the pollination orifice of the nozzle 3 expands and contracts frequently, when pollination is carried out for a long time in the morning, the fog water in the air still gradually adheres to the nozzle 3, so that the pollination orifice of the nozzle 3 becomes gradually wet, increasing the firmness of the pollen adhering to the pollination orifice of the nozzle 3 and making it difficult to fall off. To solve the above situation, when the operator notices that the amount of pollen ejected from the nozzle 3 is abnormal, the operator then pushes the adjustment switch 5 to the lowest position, controlling the driving member 101 to drive the first connecting rod 102, the second connecting rod 103 and the extrusion ring 4 to move leftward until the left side surface of the extrusion ring 4 crosses the left side of the first connecting portion 3003 of the nozzle 3. During the above process, the extrusion ring 4 will gradually squeeze the pollen adhering to the pollination orifice of the nozzle 3 until the extrusion ring 4 extrudes the adhered pollen to the outside of the nozzle 3, thus realizing the dredging and cleaning of the pollination orifice of the nozzle 3. There is no need for the operator to disassemble and clean the telescopic powder spraying tube 2, reducing the manual workload, improving the pollination efficiency at the same time, and enhancing the convenience of use of the pollination gun 1. It should be noted that the right side surface of the extrusion ring 4 always remains inside the nozzle 3 and will not completely cross the left side surface of the nozzle 3. Therefore, the extrusion ring 4 can still return to its initial position.

[0039] Embodiment 2: On the basis of Embodiment 1, as Figure 1 、 Figure 2 and Figures 5-7 shown, it further includes a connecting ball 301; the pollination gun 1 is rotatably connected with the connecting ball 301 in a damped manner, and the connecting ball 301 is provided with a through structure; a second connecting portion 30101 is provided on the connecting ball 301, the telescopic powder spraying tube 2 is fixedly connected with the second connecting portion 30101, and the second connecting portion 30101 is provided with a through structure; the telescopic powder spraying tube 2 is communicated with the powder inlet pipe 1001 through the connecting ball 301 and the second connecting portion 30101.

[0040] It further includes a limiting block 302; the pollination gun 1 is slidably connected with the limiting block 302, and the pollination gun 1 is rotatably connected with a pressing portion 30201 through a mounting block.

[0041] A rubber layer is provided at the contact portion between the limiting block 302 and the connecting ball 301 for increasing friction.

[0042] It further includes a water inlet pipe 303; the water inlet pipe 303 is communicated with the second connecting portion 30101; an electromagnetic valve is provided at the powder inlet pipe 1001 of the pollination gun 1.

[0043] The mounting ring 201 and the fixing portion 3001 of the nozzle 3 are detachably connected; a limiting rod 20101 is inserted into the mounting ring 201, and the limiting rod 20101 is rotatably connected with the fixing portion 3001.

[0044] The working steps of this embodiment are:

[0045] The growth positions of litchi flower clusters on the tree are high and low, inside and outside. To ensure that pollen can reach the flower clusters smoothly and improve the pollination success rate, during pollination, the angle of the nozzle 3 needs to be adjusted. Taking the top-down view as the reference, at this time, the operator only needs to rotate the pressing part 30201 counterclockwise, so that the pressing part 30201 moves away from the limit block 302. The limit block 302 no longer squeezes and restricts the connecting ball 301, thus releasing the limit on the connecting ball 301. Then, the operator holds the second connecting part 30101 of the connecting ball 301 and rotates the second connecting part 30101 according to the position of the flower cluster, thereby driving the telescopic powder spraying tube 2 and the nozzle 3 to rotate together, thus realizing the angle adjustment of the nozzle 3. When the angle adjustment is completed, taking the top-down view as the reference, at this time, the operator only needs to rotate the pressing part 30201 clockwise, so that the pressing part 30201 squeezes the limit block 302 to move downward. The limit block 302 restricts the connecting ball 301 again, and at the same time, the rubber layer on the limit block 302 is used to limit it, increasing the friction between the limit block 302 and the connecting ball 301, so as to prevent the telescopic powder spraying tube 2 from rotating due to the extrusion of branches during the subsequent pollination process.

[0046] During the pollination process, it is inevitable that pollen ejected from the nozzle 3 will adhere to the inner wall of the wind shield 202. During the subsequent movement of the pollination gun 1, it will gradually fall on the pistils of the female flowers that need to be pollinated. However, if the pollen adheres to the inner wall of the wind shield 202 for a long time, its activity will gradually weaken, resulting in a decrease in the pollination success rate. To solve the above problems, it is necessary to regularly clean the pollen adhering to the inner wall of the wind shield 202. At this time, the operator holds and screws out the limit rod 20101 outward, so that the limit rod 20101 is pulled out from the fixing part 3001 of the nozzle 3, releasing the restriction on the mounting ring 201. Then, the operator drags the mounting ring 201 and the wind shield 202 towards the pollination gun 1, so that the mounting ring 201 and the wind shield 202 slide to the right relative to the four pressing blocks 203, so that the pressing blocks 203 scrape the inner wall of the wind shield 202, cleaning the pollen adhering to the inner wall of the wind shield 202, and preventing the pollen remaining on the inner wall of the wind shield 202 from affecting the pollination success rate of the flower cluster. After cleaning, the operator then drags the mounting ring 201 and the wind shield 202 back to the initial position and rotates the limit rod 20101 so that it is inserted back into the fixing part 3001 of the nozzle 3, thereby realizing the limit and preventing the mounting ring 201 and the wind shield 202 from detaching from the fixing part 3001 during the subsequent pollination process.

[0047] After pollination is completed, it is usually necessary to remove the telescopic powder spraying tube 2 to clean the inside of the telescopic powder spraying tube 2. However, this method is relatively cumbersome, and frequent disassembly is likely to damage the device. To solve the above problems, when it is necessary to clean the telescopic powder spraying tube 2, close the solenoid valve of the powder inlet pipe 1001 in the pollination gun 1, then connect the water pipe to the water inlet pipe 303, and then pass the cleaning agent into the inside of the water inlet pipe 303. The residual pollen and impurities inside the telescopic powder spraying tube 2 will flow out from the nozzle 3 along with the cleaning agent, thus realizing the cleaning.

[0048] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A handheld pollination gun for litchi trees, comprising a pollination gun (1) and a telescopic powder spraying tube (2); an inlet powder tube (1001) is arranged inside the pollination gun (1); a telescopic powder spraying tube (2) is installed on the pollination gun (1), and the telescopic powder spraying tube (2) is communicated with the inlet powder tube (1001); it is characterized in that, It further includes a nozzle (3), a pressing ring (4), an adjustment switch (5), a driving component, and a windproof component; the left end nozzle of the telescopic powder spraying pipe (2) is fixedly connected with a nozzle (3); the left side opening of the nozzle (3) is a pollination opening; the nozzle (3) is composed of a fixing part (3001), four rotating rods (3002), and four first connecting parts (3003), the fixing part (3001) is fixedly connected with the telescopic powder spraying pipe (2), and the first connecting part (3003) is made of an elastic deformation material; a driving component is installed on the fixing part (3001); the driving component is connected with a pressing ring (4), and the driving component is used to drive the pressing ring (4) to move left and right, so as to press the nozzle (3) to adjust the size of the nozzle (3); a corrugated pipe (2001) is arranged between the left side of the telescopic powder spraying pipe (2) and the pressing ring (4), and the corrugated pipe (2001) is communicated with the telescopic powder spraying pipe (2); an adjustment switch (5) is installed on the pollination gun (1), and the adjustment switch (5) is connected with the driving component through an electric signal; a windproof component for preventing pollen from being scattered is installed on the fixing part (3001); The windproof component includes a mounting ring (201) and a windproof cover (202); the mounting ring (201) is installed on the fixing part (3001) of the nozzle (3); a windproof cover (202) for preventing pollen from being scattered is connected to the mounting ring (201); It further includes a pressing block (203); several pressing blocks (203) are fixedly connected to the nozzle (3), and each pressing block (203) is fixedly connected to the adjacent rotating rod (3002) on the nozzle (3); the windproof cover (202) is composed of six support rods and six shielding cloths, the shielding cloth is elastic, the pressing block (203) contacts the support rod of the windproof cover (202), and the support rod of the windproof cover (202) is rotatably connected to the fixing part (3001); The mounting ring (201) and the fixing part (3001) of the nozzle (3) are detachably connected; a limiting rod (20101) is inserted into the mounting ring (201), and the limiting rod (20101) is screwed to the fixing part (3001); When the manual hand-held pollination gun (1) pollinates different flower bouquets, in the initial state, the pollination opening of the nozzle (3) is in the smallest state. At this time, the operator manually pushes down the adjustment switch (5), causing the adjustment switch (5) to slide downward on the pollination gun (1), thereby controlling the drive assembly to drive the extrusion ring (4) to move leftward, so that the extrusion ring (4) gradually squeezes the rotating rod (3002) on the nozzle (3). At the same time, the corrugated pipe (2001) is stretched. With the extrusion of the extrusion ring (4), the rotating rod (3002) on the nozzle (3) will gradually move outward. At the same time, the first connecting part (3003) between the rotating rods (3002) is gradually expanded outward after being pulled, so that the left pollination opening of the nozzle (3) is gradually expanded. Then the operator presses the control button of the pollination gun (1), so that the pollen is sprayed into the corrugated pipe (2001) through the nozzle of the telescopic powder spraying pipe (2), and then is sprayed out from the nozzle of the corrugated pipe (2001) to the pollination opening of the nozzle (3), and finally is sprayed onto the flower bouquet through the pollination opening of the nozzle (3). And so on, the operator can push down the adjustment switch (5) according to the size of the flower bouquet to control the extrusion degree of the extrusion ring (4) on the rotating rod (3002) of the nozzle (3), thereby realizing the adjustment of the size of the nozzle (3) to meet the pollination requirements of different flower bouquet sizes; When the extrusion ring (4) squeezes the rotating rod (3002) of the nozzle (3), the rotating rod (3002) of the nozzle (3) will drive the extrusion block (203) to squeeze the adjacent support rods of the wind shield (202), so that the adjacent support rods drive the shielding cloth of the wind shield (202) to rotate outward together, so that the left side of the wind shield (202) expands outward in a horn shape. Furthermore, when the pollination opening of the nozzle (3) expands and contracts, the wind shield (202) will also expand and contract correspondingly.

2. The hand-held pollination gun for litchi trees according to claim 1, wherein, It also includes a connecting ball (301); the connecting ball (301) is rotatably connected to the pollination gun (1) with damping, and the connecting ball (301) is arranged in a through structure; a second connecting part (30101) is arranged on the connecting ball (301), and the telescopic powder spraying pipe (2) is fixedly connected to the second connecting part (30101), and the second connecting part (30101) is arranged in a through structure; the telescopic powder spraying pipe (2) is communicated with the powder inlet pipe (1001) through the connecting ball (301) and the second connecting part (30101).

3. The hand-held pollination gun for litchi trees according to claim 2, characterized in that, It also includes a limiting block (302); the limiting block (302) is slidably connected to the pollination gun (1), and the pollination gun (1) is rotatably connected with a pressing part (30201) through a mounting block.

4. A hand-held pollination gun for litchi trees according to claim 3, characterized in that, A rubber layer is arranged at the contact part between the limiting block (302) and the connecting ball (301).

5. The hand-held pollination gun for litchi trees according to claim 2, wherein It also includes a water inlet pipe (303); a water inlet pipe (303) for easy cleaning is communicated with the second connecting part (30101); an electromagnetic valve is arranged at the powder inlet pipe (1001) of the pollination gun (1).

Images