Powder spraying device capable of manually adjusting flow

Abstract

The utility model discloses a powder spraying device capable of manually adjusting flow. The powder spraying device comprises an injection-molded main body (3), a transparent powder storage bottle (2), a powder spraying pipe (1) and an air source (4), wherein the transparent powder storage bottle (2) is connected to the main body (3) through threads; the powder spraying pipe (1) is arranged at the front end of the main body (3); when the device is used for spraying pesticide to kill insects or spraying pollen to pollinate fruit trees, the powder spraying concentration can be adjusted, the airflow force of powder spraying is not changed, powder spraying is uniform, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to a powder spraying device with manually adjustable flow rate, which comprises an injection-molded main body, a transparent powder storage bottle connected to the main body through threads, a powder spraying pipe installed at the front end of the main body, and an air source located at the rear end of the main body. Background Art

[0002] Whether in the field of artificial plant pollination or pest control, powder spraying technology is used, because different powders have different properties and require different spray concentrations. Artificial pollination now often uses a pollen duster, because pollen is valuable, and the precision required to adjust the amount of powder spraying is very high. If it is to kill pests, such as termites, if the powder concentration is too high, it will block the ant tunnels, and the worker ants will not be able to transport the powder to the nest, which will make it impossible to kill the nest. The current electric duster indirectly controls the speed of the air pump motor by adjusting the power supply frequency, thereby adjusting the amount of powder sprayed. However, the main problem with this structure is that the amount of powder sprayed is related to the spraying force. To reduce the powder concentration, the speed of the air pump motor will be reduced, and the powder spraying force will also be reduced.

[0003] Chinese utility model patent specification CN205213694U discloses an artificial pollinator, whose structure includes a pollinator nozzle, a bent nozzle, a pollinator nozzle, a pressurized air bag, a pollen funnel and a pollen storage device, etc. Its principle is that by squeezing the air bag, the powder coming down from the pollen storage device is ejected from the pollinator nozzle by the air flow. The bent nozzle can adjust the angle of the pollinator nozzle to target flowers at different angles. This pollinator does not have a flow regulating device, and the amount of powder sprayed can only be controlled by the force of squeezing the air bag. Different people use different forces, and the amount of powder sprayed is also unstable. Therefore, it is necessary to invent a powder spraying device with manual flow adjustment. When using this device for powder spraying, the powder concentration can be flexibly changed by adjusting the screw without affecting the force of the powder spraying airflow, and the powder spraying is uniform. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a powder spraying device with manually adjustable flow rate. When the device is used to spray pesticides to kill insects or spray pollen to pollinate fruit trees, the powder spraying concentration can be adjusted without changing the air flow force of the powder spraying, and the powder spraying is uniform and efficient.

[0005] In order to achieve the above purpose, the utility model provides a manually adjustable flow powder spraying device comprising an injection molded main body, a transparent powder storage bottle threadedly connected to the main body, a powder spraying pipe installed at the front end of the main body, and an air source located at the rear end of the main body.

[0006] The main components of this design include an air inlet duct and a powder outlet duct. The axes of the two ducts coincide, but their ends are separated and disconnected, preventing airflow from directly entering the powder outlet duct. A first metal nut is embedded in the open end of the powder outlet duct, allowing for threaded connection to the powder spraying tube for easy assembly and disassembly. A powder outlet is located near the closed end of the powder outlet duct, connecting the powder storage bottle to the powder spraying tube. The open end of the air inlet duct is connected to an air source to ensure airflow. A pressure regulating hole and an air nozzle are located near the closed end of the air inlet duct, connecting the air inlet duct to the powder storage bottle. A screw fixing hole is located directly above the pressure regulating hole. A second metal nut is embedded in the screw fixing hole, and a screw is installed in the second metal nut. This arrangement increases wear resistance and prevents thread wear and failure from repeated use. By rotating the screw, the pressure regulating hole gradually closes, thereby adjusting the airflow intensity and speed of the air nozzle to adjust the powder spraying amount.

[0007] As an improvement of the utility model, an air bag is used as the air source, and air flow is generated by squeezing the air bag and sprayed out from the air nozzle (31), so that the air flow impacts the powder in the powder storage bottle to form a mist, which is then sprayed out from the powder spraying pipe.

[0008] As another improvement of the present invention, the air source is set as an air pump, and the motor rotates to squeeze the rubber bowl in the pump body to form a continuous airflow, and a high-speed airflow is ejected from the air nozzle to impact the powder in the powder storage bottle into a mist, which is then ejected from the powder spraying tube. An air compressor can also be used to supply air, and compressed air can be used as the air source.

[0009] The utility model can be further improved by setting the screw to a metal screw with an injection-molded handle. This will improve the comfort when tightening the screw by hand when frequently adjusting the amount of powder spraying, and it will also have good strength. For example, the injection-molded handle can be set to a plum blossom shape, or it can be set to a knurled knob cap shape to facilitate the adjustment of the screw.

[0010] If the present invention is further improved, an extension hose can be added to the nozzle. A thin-walled metal tube can be installed at the other end of the extension hose to serve as the nozzle. The appropriate length can be selected based on the size of the powder storage bottle. Because different powders have different densities and require different blowing forces, a metal tube with an appropriate aperture can be selected and connected to the nozzle via a silicone hose for easy disassembly and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attachment Figure 1 It is a cross-sectional view of the structure of the present utility model. DETAILED DESCRIPTION

[0012] The specific implementation of the present utility model will be described in detail below with reference to the accompanying drawings.

[0013] As attached Figure 1As shown: A powder spraying device with manually adjustable flow rate includes an air inlet pipe 32 and a powder outlet pipe 33, wherein the axes of the air inlet pipe 32 and the powder outlet pipe 33 coincide and the ends are separated and not connected, so that the air flow cannot directly enter the powder outlet pipe 33 from the air inlet pipe 32. A first metal nut is embedded in the open end of the powder outlet pipe 33, so that it can be connected to the powder spraying pipe 1 through a thread, which is convenient for loading and unloading. A powder outlet hole 34 is provided near the closed end of the powder outlet pipe 33 to connect the powder storage bottle 2 with the powder spraying pipe 1. The open end of the air inlet pipe 32 is connected to the air source 4, ensuring continuous airflow. Near the closed end of the air inlet pipe 32, a pressure regulating hole 35 and an air nozzle 31 are located, sequentially connecting the air inlet pipe 32 to the powder storage bottle 2. Directly above the pressure regulating hole 35 is a screw fixing hole 36, which is embedded with a second metal nut, and a screw 5 is mounted within the second metal nut. This arrangement increases the wear resistance of the threads, preventing wear and failure from repeated use. By rotating the screw 5, the pressure regulating hole 35 gradually opens and closes, thereby adjusting the airflow intensity and speed of the air nozzle 31, and thus adjusting the amount of powder sprayed.

[0014] Another embodiment of the present invention utilizes an air bag as the air source 4. The air bag is squeezed to generate airflow, which is ejected from the air nozzle 31. This airflow impacts the powder in the powder storage bottle 2, forming a mist that is then ejected from the powder spray tube 1. Alternatively, the air source may be an air pump. Rotating the motor squeezes the rubber cup within the pump body, creating a continuous airflow. This high-speed airflow is ejected from the air nozzle 31, impacting the powder in the powder storage bottle 2, forming a mist that is then ejected from the powder spray tube 1. Alternatively, an air compressor may be used as the air source 4, with compressed air being used.

[0015] The present invention can also set the screw 5 as a metal screw with an injection-molded handle, so that when the powder spraying amount is frequently adjusted, the comfort of manually tightening the screw 5 is improved. For example, the injection-molded handle is set to a plum blossom shape, or it can be set to a knurled knob cap shape to facilitate the adjustment of the screw. Preferably, the plum blossom screw has a beautiful feel and low cost.

[0016] Another embodiment of the present invention incorporates an extension hose attached to the air nozzle 31. A thin-walled metal tube is attached to the other end of the extension hose, serving as a new air nozzle. The appropriate length is selected based on the size of the powder storage bottle 2. Because different powders have varying densities and require varying blowing forces, a metal tube of appropriate diameter is selected and connected to the air nozzle via the extension hose. This facilitates disassembly and cleaning. PVC and PU tubes can also be connected, with silicone hose being preferred.

[0017] When in use, put the powder in the powder storage bottle 2, connect the powder spraying tube 1 to the main body 3, adjust the screw 5, turn on the air source 4, and the powder will be continuously sprayed out from the powder spraying tube 1 according to the required concentration. If spraying pollen, aim at the flowers for pollination. If spraying insecticidal powder, aim at the pests and their nests to complete the powder spraying and pest control.

[0018] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the aforementioned embodiments. Even with various modifications to the present invention, any device comprising a pressure regulating hole and an air nozzle provided on the duster's air inlet pipe, a threaded fixing hole provided directly above the pressure regulating hole, and a device capable of adjusting the powder spraying amount by adjusting the pressure regulating hole from open to closed by adjusting the screw, falls within the scope of protection of the present invention.

Claims

1. A powder spraying device with manually adjustable flow rate, comprising an injection-molded main body (3), a transparent powder storage bottle (2) threadedly connected to the main body (3), a powder spraying tube (1) mounted at the front end of the main body (3), and an air source (4) located at the rear end of the main body (3), characterized in that The main body (3) comprises an air inlet pipe (32) and a powder outlet pipe (33). The axes of the air inlet pipe (32) and the powder outlet pipe (33) coincide with each other, and the ends are separated and not connected. The open end of the powder outlet pipe (33) is embedded with a first metal nut for convenient connection with the powder spraying pipe (1). A powder outlet hole (34) is provided near the closed end of the powder outlet pipe (33). The open end of the air inlet pipe (32) is connected to the air source (4). Near the closed end, a pressure regulating hole (35) and an air jet nozzle (31) are sequentially provided. A screw fixing hole (36) is provided just above the pressure regulating hole (35). A second metal nut is embedded in the screw fixing hole (36). A screw (5) is provided in the second metal nut. By rotating the screw (5), the pressure regulating hole (35) is gradually closed from opening, thereby adjusting the air flow intensity and speed ejected from the air jet nozzle (31) to adjust the powder spraying amount.

2. A powder spraying device with manual flow adjustment according to claim 1, characterized in that The air source (4) is an air bag, which can generate air flow through the air nozzle (31) by squeezing.

3. A powder spraying device with manual flow adjustment according to claim 1, characterized in that The air source (4) is an air pump, which rotates the motor to squeeze the rubber bowls in the pump body in sequence to form a continuous air flow, which is ejected from the air nozzle (31).

4. A powder spraying device with manual flow adjustment according to claim 1, characterized in that The screw (5) is a metal screw with an injection-molded handle.

5. A powder spraying device with manual flow adjustment according to claim 1, characterized in that The air jet nozzle (31) is provided with an extension hose, and a thin-walled metal tube is provided at the other end of the extension hose.

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