Pollen spraying device for tobacco hybridization

Abstract

The utility model belongs to the technical field of tobacco breeding, and particularly relates to a pollen spraying and smearing device for tobacco hybridization, which comprises a spray gun, the inner space of the spray gun is divided into a storage bin and an air pressure bin which are axially arranged by a blocking mechanism, the storage bin is communicated with the outside through a conical spray pipe screwed at the end of the spray gun, and the top of the storage bin is communicated with a conveying port. A pushing mechanism is arranged in the air pressure bin in an airtight manner; the blocking mechanism comprises a partition plate and a filter screen plate which are parallel to each other and fixedly arranged in the spray gun, transoms which are symmetrical relative to the axis are formed in a top plate body and a bottom plate body of the partition plate, a plate body, facing one side of the storage bin, of the partition plate is hinged to a pin shaft through a hinge seat, and a blocking plate for sealing the corresponding transoms is arranged on the pin shaft. The device is simple in overall structure and convenient to operate and clean, pollen can be effectively prevented from entering the air pressure bin to cause pollution, and the accuracy of a hybridization test is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco breeding, and in particular relates to a pollen spraying device for tobacco hybridization. Background Art

[0002] Hybrid breeding is one of the important means of traditional tobacco breeding. Genetic recombination between the male and female parents is achieved by applying the male parent pollen to the female parent stigma, and hybrid offspring are obtained. The traditional method of directly applying the stigma to the stamens requires that multiple male parent stamens be applied to the stigmas of multiple flowers of the same tobacco plant, resulting in low work efficiency. Therefore, the prior art often uses an air bag structure with built-in pollen to carry out pollination operations. It uses the extrusion of the air bag as a driving force to push the pollen out of the nozzle and spray it onto the stigma of the fireworks to be pollinated. However, when the air bag recovers its deformation, part of the pollen will be sucked back. At the same time, the air bag is inconvenient to clean, and only one powder and one bag can be used. Moreover, when adding pollen, the pollen can only be absorbed by the suction force after the deformation is restored, and the suction amount is low. Utility Model Content

[0003] The utility model aims to provide a pollen spraying device for tobacco hybridization, which has a simple overall structure, is easy to operate and clean, can effectively prevent pollen from entering the air pressure chamber to cause pollution, and improves the accuracy of hybridization experiments.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A pollen spraying device for tobacco hybridization, comprising a spray gun whose internal space is divided into an axially arranged storage bin and an air pressure bin by a blocking mechanism, the storage bin is connected to the outside through a conical tube-shaped nozzle threaded on the end of the spray gun, and the top of the storage bin is connected to a feed port, and a pushing mechanism is airtightly arranged in the air pressure bin;

[0006] The blocking mechanism includes a partition plate and a filter plate which are fixed in parallel with each other in the spray gun. The top and bottom plates of the partition plate are provided with air windows which are symmetrical with respect to the axis. The plate of the partition plate facing the storage bin is hinged to the pin shaft through a hinge seat. The pin shaft is provided with a sealing plate for closing the corresponding air window.

[0007] Preferably, the two ends of the bottom of the blocking plate are hinged to the pin through ear plates, and a torsion spring is sleeved on the pin. The two ends of the torsion spring respectively touch the partition plate and the blocking plate and force the blocking plate to close the corresponding air window.

[0008] Preferably, the inner wall of the spray gun where the partition plate is located is in a variable diameter shape with the inner diameter decreasing gradually along the direction from the storage bin to the air pressure bin.

[0009] Preferably, a guide frustum is coaxially provided on the plate surface of the partition plate facing the storage bin.

[0010] Preferably, the pushing mechanism comprises an airtight pad airtightly slidably arranged in the air pressure chamber, one end of the extrusion rod is connected to the airtight pad, and the other end coaxially penetrates the spray gun and is connected to an external pushing plate, and a return spring is sleeved on the extrusion rod between the pushing plate and the spray gun.

[0011] Preferably, the outer wall of the spray gun is also provided with a handle and a one-way valve, and the outside world is connected to the air pressure chamber at the filter plate in one direction through the one-way valve. Specifically, the one-way valve only allows air to flow from the outside world into the air pressure chamber.

[0012] Preferably, a threaded pipe and a top cover for screwing the threaded pipe are provided at the feeding port, and the top cover is connected to the outer wall of the spray gun via a connecting rope. The setting of the connecting rope can prevent the top cover from being lost.

[0013] The working principle of the utility model is as follows:

[0014] Clean the spray gun as a whole, then keep the airtight pad against the end of the air pressure chamber away from the storage bin, rotate the top cover and open the threaded tube and feed port, and guide the collected pollen from the feed port into the storage bin. Then use the top cover to close the threaded tube and feed port to start pollination.

[0015] The device is held in one hand, and the thumb pushes the push plate to overcome the elastic force of the reset spring so that the airtight pad moves in the air pressure chamber. After being compressed, the air passes through the filter plate and overcomes the elastic force of the torsion spring to push the blocking plate outward, so that the air window is opened and enters the storage bin after passing through the air window. The air pushes the pollen in the storage bin and sprays out from the spray port and sprays on the fireworks to be pollinated. At the same time, the blocking plate on the partition plate quickly resets and blocks the air window under the action of the torsion spring. At the same time, the reset spring 54 drives the push plate and the airtight pad to reset under the action of its own deformation elastic force. The outside air enters the air pressure chamber through the one-way valve and waits for the next powder spraying operation to be compressed.

[0016] At the same time, in the specific operation of the utility model, two methods can be used for pollination operation, namely, quickly pushing the push plate and using the instantaneous airflow generated to realize pollen ejection; or slowly pushing the push plate, so that the airflow intensity generated is smaller and the pollen can be slowly pushed to the ejection port, and then the stigma can be smeared to prevent certain stigmas with poor physiological morphology from being damaged, and the loss of pollen can also be reduced.

[0017] In order to prevent the pollen in the storage bin from mistakenly entering the air pressure bin, the utility model adopts a blocking plate with a torsion spring brake to block the air window. At the same time, the variable diameter structure of the spray gun corresponding to the blocking plate also reduces the width of the path for the pollen to enter the air pressure bin from the air window as much as possible. In addition, the structure of the guide frustum can also reduce the accumulation of pollen at the partition plate.

[0018] Compared with the prior art, the utility model has the following advantages: the utility model has a simple overall structure, is easy to operate and clean, can effectively prevent pollen from entering the air pressure chamber to cause pollution, and improves the accuracy of hybridization experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the pollen smearing device shown in a specific embodiment;

[0020] Figure 2 It is a schematic diagram of the internal structure of the spray gun shown in the specific embodiment;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0022] Figure 4 It is a schematic diagram of the connection structure between the sealing plate and the pin shaft. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] like Figure 1-4 As shown, a pollen spraying device for tobacco hybridization includes a spray gun 1 whose internal space is divided into an axially arranged storage bin 11 and an air pressure bin 12 by a blocking mechanism. The storage bin 11 is connected to the outside through a spray outlet 13 at the end of the spray gun 1, and the top of the storage bin 11 is connected to a feed port 14. A threaded pipe 71 and a top cover 72 for screwing the threaded pipe 71 are provided at the feed port 14. The top cover 72 is connected to the outer wall of the spray gun 1 through a connecting rope 73.

[0025] The blocking mechanism includes a partition plate 31 and a filter plate 32 fixed in parallel to each other in the spray gun 1. The filter plate 32 is arranged close to the air pressure chamber 12. The inner wall of the spray gun 1 where the partition plate 31 is located is in a variable diameter shape with the inner diameter decreasing along the direction from the storage chamber 11 to the air pressure chamber 12.

[0026] The partition plate 31 has air windows 33 symmetrically arranged on the top and bottom plates thereof. The partition plate 31 facing the storage bin 11 is hinged to the pin 34 through a hinge seat. The bottom ends of the blocking plate 35 for closing the corresponding air windows 33 are hinged to the pin 34 through ear plates 36. A torsion spring 37 is sleeved on the pin 34 at the bottom of the blocking plate 35. The two ends of the torsion spring 37 respectively contact the partition plate 31 and the blocking plate 35 and force the blocking plate 35 to close the corresponding air windows 33. A guide truncated table 4 is coaxially arranged on the plate surface of the partition plate 31 facing the storage bin 11.

[0027] The air pressure chamber 12 is airtightly provided with a pushing mechanism, which includes an airtight pad 51 airtightly slidably provided in the air pressure chamber 12, one end of an extrusion rod 52 is connected to the airtight pad 51, and the other end coaxially penetrates the spray gun 1 and is connected to an external pushing plate 53, and a return spring 54 is sleeved on the extrusion rod 52 between the pushing plate 53 and the spray gun 1. The outer wall of the spray gun 1 is also provided with a handle 6 and a one-way valve 8, and the outside is in one-way communication with the air pressure chamber 12 at the filter plate 32 through the one-way valve 8.

[0028] The working principle of the utility model is as follows:

[0029] Clean the spray gun 1 as a whole, then keep the airtight pad 51 against the end of the air pressure chamber 12 away from the storage bin 11, rotate the top cover 72, open the threaded tube 71 and the feed port 14, and introduce the collected pollen from the feed port 14 into the storage bin 11. Then use the top cover 72 to close the threaded tube 71 and the feed port 14 to start pollination.

[0030] Holding the spray gun 1 with one hand, the thumb pushes the push plate 53 to overcome the elastic force of the return spring 54 so that the airtight pad 51 moves in the air pressure chamber 12. After being compressed, the air passes through the filter plate 32 and overcomes the elastic force of the torsion spring 37 to push the blocking plate 35 outward, so that the air window 33 is opened and enters the storage bin 11 after passing through the air window 33. The air pushes the pollen in the storage bin 11 and sprays out from the spray port 13 and sprays on the fireworks to be pollinated. At the same time, the blocking plate 35 on the partition plate 31 quickly resets and blocks the air window 33 under the action of the torsion spring 37. At the same time, the return spring 54 pushes the plate 53 under the action of its own deformation elastic force to reset the airtight pad 51. The outside air enters the air pressure chamber 12 through the one-way valve 8 and waits for the next powder spraying operation to be compressed.

[0031] At the same time, in the specific operation of the utility model, two methods can be used for pollination operation, namely, quickly pushing the push plate 53 and using the instantaneous airflow generated to realize pollen ejection; or slowly pushing the push plate 53, so that the airflow intensity generated is small and the pollen can be slowly pushed to the ejection port 13, and then the stigma can be smeared to prevent certain stigmas with poor physiological morphology from being damaged, and the loss of pollen can also be reduced.

[0032] In order to prevent the pollen in the storage bin 11 from mistakenly entering the air pressure bin 12, the utility model adopts a blocking plate 35 braked by a torsion spring 37 to block the air window 33. At the same time, the variable diameter structure of the spray gun 1 corresponding to the blocking plate 35 also reduces the path width of the pollen entering the air pressure bin 12 from the air window 33 as much as possible, and cooperates with the structure of the guide frustum 4 to reduce the accumulation of pollen at the partition plate.

Claims

1. A pollen spraying device for tobacco hybridization, characterized in that: A spray gun (1) comprising an internal space divided by a blocking mechanism into an axially arranged material storage bin (11) and a pressure bin (12), the material storage bin (11) being connected to the outside through a conical tube-shaped nozzle (13) screwed onto the end of the spray gun (1), and the top of the material storage bin (11) being connected to a material delivery port (14), and a pushing mechanism being airtightly arranged in the pressure bin (12); The blocking mechanism comprises a partition plate (31) and a filter plate (32) which are fixedly arranged in parallel with each other in the spray gun (1); air windows (33) which are symmetrical with respect to the axis are provided on the top and bottom plates of the partition plate (31); the plate of the partition plate (31) on the side facing the storage bin (11) is hinged to a pin (34) via a hinge seat; and a blocking plate (35) for closing the corresponding air window (33) is provided on the pin.

2. The pollen spraying device for tobacco hybridization according to claim 1, characterized in that: The two ends of the bottom of the blocking plate (35) are hinged to the pin shaft (34) through ear plates (36), and a torsion spring (37) is sleeved on the pin shaft (34). The two ends of the torsion spring (37) respectively contact the partition plate (31) and the blocking plate (35) and force the blocking plate (35) to close the corresponding air window (33).

3. The pollen spraying device for tobacco hybridization according to claim 2, characterized in that: The inner wall of the spray gun (1) where the partition plate (31) is located is in a variable diameter shape with the inner diameter decreasing gradually along the direction from the material storage bin (11) to the air pressure bin (12).

4. The pollen spraying device for tobacco hybridization according to claim 2, characterized in that: A guide truncated platform (4) is coaxially provided on the plate surface of the partition plate (31) facing the material storage bin (11).

5. The pollen spraying device for tobacco hybridization according to claim 1, characterized in that: The pushing mechanism comprises an airtight pad (51) airtightly slidably arranged in the air pressure chamber (12); one end of an extrusion rod (52) is connected to the airtight pad (51), and the other end coaxially penetrates the spray gun (1) and is connected to an external pushing plate (53); a return spring (54) is sleeved on the extrusion rod (52) between the pushing plate (53) and the spray gun (1).

6. The pollen spraying device for tobacco hybridization according to claim 1, characterized in that: The outer wall of the spray gun (1) is also provided with a handle (6) and a one-way valve (8), and the outside is in one-way communication with the air pressure chamber (12) at the filter plate (32) through the one-way valve (8).

7. The pollen spraying device for tobacco hybridization according to claim 1, characterized in that: The material delivery port (14) is provided with a threaded tube (71) and a top cover (72) for screwing onto the threaded tube (71); the top cover (72) is connected to the outer wall of the spray gun (1) via a connecting rope (73).

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