Variable proportioning mechanism and pesticide spraying device

Abstract

The utility model relates to the technical field of agricultural machines, in particular to a variable proportioning mechanism and a pesticide spraying device. A lifting channel is formed in a fixing frame in the height direction in a penetrating mode, a weighing piece is arranged in the lifting channel, and the weighing piece is provided with a storage cavity used for storing pesticide; a feeding port is formed in the bottom of the side wall of the storage cavity, a feeding pipe which is communicated with the feeding port and used for conveying pesticide is arranged at the communicating groove, and the weighing part slides in the lifting channel so that liquid in the storage cavity can be extracted and discharged. Compared with the prior art, discharging of the feeding port is achieved by pressing the weighing part, then the storage cavity is automatically filled with liquid by resetting the weighing part, manual pouring and proportioning are not needed, and the proportioning efficiency of pesticides is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and more specifically, to a variable ratio mechanism and a spraying device. Background Art

[0002] A spraying device is a piece of equipment used in the fields of agriculture, horticulture, forestry, etc. It is mainly used for spraying liquids such as pesticides, fertilizers, and growth regulators. During the spraying process, in order to adapt to different growth conditions of plants, it is necessary to mix and proportion multiple pesticides and then spray them through the spraying device.

[0003] In the prior art, before the spraying operation, it is mostly necessary to manually pour multiple pesticides into the measuring containers respectively for quantitative use, and then introduce the quantitatively used pesticides into the container for mixing and proportioning. The operation is relatively cumbersome and the proportioning efficiency is low. Summary of the Utility Model

[0004] The utility model provides a variable ratio mechanism, which can overcome the defect of cumbersome medicine preparation process in the prior art spraying device.

[0005] According to a variable ratio mechanism of the utility model, a lifting channel is vertically penetrated through a fixed frame, a weighing member is arranged in the lifting channel, and the weighing member has a storage cavity for storing pesticides; a feed inlet is arranged at the bottom of the side wall of the storage cavity, and a feed pipe for conveying pesticides and communicating with the feed inlet is arranged at the communicating groove. The weighing member slides in the lifting channel to realize the extraction and discharge of the liquid inside the storage cavity.

[0006] Compared with the prior art, pressing the weighing member to realize the discharge of the feed inlet, and then automatically filling the liquid inside the storage cavity by resetting the weighing member, without manual pouring and proportioning, improves the proportioning efficiency of pesticides.

[0007] Preferably, the weighing member includes a limiting block located at the top of the storage cavity. A limiting portion is vertically penetrated through the middle of the limiting block. A quantitative member is threadedly connected inside the limiting portion, and the quantitative member slides inside the storage cavity. An air passage for gas circulation is vertically penetrated through the bottom of the quantitative member, and a blocking valve for blocking liquid is arranged at the bottom of the inner wall of the air passage.

[0008] In the utility model, through the setting of the quantitative member, the volume of pesticides stored in the storage cavity is changed, so as to adapt to different pesticide proportioning ratios. Compared with manual proportioning, it not only improves the proportioning efficiency, but also can basically ensure that the proportioning meets the requirements.

[0009] Preferably, the feed pipe has a docking end corresponding to the feed inlet, and a water pump for extracting pesticides and conveying them to the storage cavity is arranged at the opposite end of the feed pipe from the docking end.

[0010] In the present utility model, a water pump pumps pesticides into a docking end and then into a feed inlet, ensuring that the pesticides can completely fill the internal space of the storage cavity after the change of the metering member, further improving the accuracy of the device ratio.

[0011] Preferably, an extension block is provided on the side wall of the limit block, and a support assembly is provided on the top of the fixing frame. The support assembly includes a guiding column arranged along the sliding direction of the weighing member on the top of the fixing frame. The extension block slides on the guiding column, and a limit disc for limiting the sliding distance of the weighing member is provided on the top of the guiding column.

[0012] In the present utility model, the limit disc limits the sliding distance of the extension block, preventing the weighing member from continuing to move after the feed inlet is docked with the docking end, and improving the accuracy of the docking between the feed inlet and the docking end.

[0013] Preferably, the support assembly further includes a spring sleeved outside the guiding column, and the spring is used to push the extension block to abut against the limit disc.

[0014] In the present utility model, the spring sleeved outside the guiding column pushes the extension block to move upward, thereby driving the weighing member to move upward, realizing the rapid connection between the feed inlet and the docking end, and further improving the efficiency of pesticide ratio.

[0015] Preferably, the support assembly further includes a moving groove opened along the height direction on the outer wall of the guiding column. A positioning ring is sleeved on the outer wall of the guiding column. The positioning ring has a positioning portion that slides with the moving groove. A first annular groove is opened at the top of the moving groove, and the positioning portion is slidably connected with the first annular groove to limit the extension block by the positioning ring.

[0016] In the present utility model, the positioning ring positions the extension block, and the limit on the extension block can be cancelled by turning the positioning portion back into the moving groove, improving the stability of the feeding process of the storage cavity.

[0017] Preferably, the support assembly further includes a second annular groove opened at the top of the moving groove, and the positioning portion is slidably connected with the second annular groove to limit the pushing force of the spring by the positioning ring.

[0018] In the present utility model, the positioning ring can limit the pushing force of the spring, and there is no need for manual continuous pressing of the weighing member, improving the practicability of the device.

[0019] In addition, the present utility model also provides a spraying device, which is a mixing tank for mixing multiple pesticides. A plurality of the variable ratio mechanisms described above are provided at the mixing tank. The mixing tank has a mixing cavity for containing pesticides, and a plurality of communication holes for the weighing member to penetrate into and pour pesticides into the inner cavity of the mixing tank are opened at the top of the mixing cavity.

[0020] In the present utility model, the bottoms of multiple weighing members filled with different pesticides extend into the communication holes, and the pesticides contained therein are poured, so that the pesticides in the weighing members enter the mixing cavity, thereby realizing the rapid mixing and proportioning of multiple pesticides. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the fixing frame in Embodiment 1;

[0022] Figure 2 It is a schematic side sectional view of the fixing frame in Embodiment 1;

[0023] Figure 3 It is a schematic side sectional view of the weighing member in Embodiment 1;

[0024] Figure 4 It is a schematic diagram of the guide post in Embodiment 1. Detailed Embodiment

[0025] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the embodiments. It should be understood that the embodiments are only for explaining the present utility model rather than limiting it.

[0026] Embodiment 1

[0027] As Figure 1-2 shown, this embodiment provides a variable ratio mechanism, which includes a lifting channel 120 penetrating in the height direction at the fixing frame 110. A weighing member 130 is arranged in the lifting channel 120. The weighing member 130 has a storage cavity 210 for storing pesticides; a feed inlet 220 is arranged at the bottom of the side wall of the storage cavity 210. A feed pipe 160 for transporting pesticides and communicating with the feed inlet 220 is arranged at the communication groove 250. The weighing member 130 slides in the lifting channel 120 to realize the extraction and discharge of the liquid inside the storage cavity 210.

[0028] With the above structure, the pesticide is pumped into the feed pipe 160. The pesticide in the feed pipe 160 will flow into the storage cavity 210 through the feed inlet 220 to fill the storage cavity 210 with the pesticide, thereby realizing the extraction of the liquid inside the storage cavity 210. The staff presses the weighing member 130, causing the weighing member 130 to move towards the bottom of the lifting channel 120. The feed inlet 220 will also move towards the bottom following the weighing member 130, so that the feed inlet 220 is offset from the feed pipe 160. The weighing member 130 slides towards the bottom, causing the feed inlet 220 to disengage from the lifting channel 120. The pesticide inside the storage cavity 210 will flow out through the feed inlet 220, thereby realizing the discharge of the liquid inside the storage cavity 210. Manipulate the weighing member 130 to move towards the top of the lifting channel 120, so that the weighing member 130 is reset, and the feed inlet 220 enters the lifting channel 120 again and is connected to the feed pipe 160 for extraction again. Compared with the prior art, pressing the weighing member 130 realizes the discharge of the feed inlet 220, and then automatically fills the liquid inside the storage cavity 210 by resetting the weighing member 130, without manual pouring and proportioning, improving the proportioning efficiency of the pesticide.

[0029] Combined with Figure 1-2 As shown, in this embodiment, the weighing member 130 includes a limiting block 230 located at the top of the storage cavity 210. A limiting portion 240 is penetrated through the middle of the limiting block 230. A quantitative member 140 is threadedly connected inside the limiting portion 240, and the quantitative member 140 slides inside the storage cavity 210. An air passage 320 for gas circulation is penetrated through the bottom of the quantitative member 140 along the height direction. A blocking valve 330 for blocking liquid is provided at the bottom of the inner wall of the air passage 320; the feed pipe 160 has a docking end 250 corresponding to the feed inlet 220, and a water pump 260 for extracting the pesticide and conveying it to the storage cavity 210 is provided at the opposite end of the feed pipe 160 at the docking end 250.

[0030] With the above structure, when it is necessary to adjust the volume of the storage cavity 210, rotate the quantitative member 140. The quantitative member 140 will move inside the storage cavity 210 under the action of the thread of the limiting portion 240, thereby changing the volume of the pesticide stored in the storage cavity 210 to adapt to different pesticide proportioning ratios. The blocking valve 330 is a breathable valve and is threadedly fixed at the bottom of the air passage 320. When filling with liquid, the air inside the storage cavity 210 will flow into the air passage 320 through the blocking valve 330 and then be discharged to the outside. When the storage cavity 210 is filled, the blocking valve 330 will block the liquid to prevent it from flowing into the air passage 320. Compared with manual proportioning, it not only improves the proportioning efficiency but also can ensure that the proportion basically meets the requirements; when the feed inlet 220 is connected to the feed pipe 160, the water pump 260 will pump the pesticide into the docking end 250 and enter the feed inlet 220 to ensure that the pesticide can completely fill the internal space of the storage cavity 210 changed by the quantitative member 140, further improving the accuracy of the device proportioning.

[0031] As shown in the figure Figure 1-3 As shown in the figure, in this embodiment, the support assembly 170 further includes a spring sleeved outside the guide post 280. The spring is used to push the extension block 270 to abut against the limit disk 310. An extension block 270 is provided at the side wall of the limit block 230. A support assembly 170 is provided at the top of the fixed frame 110. The support assembly 170 includes a guide post 280 arranged along the sliding direction of the weighing member 130 at the top of the fixed frame 110. The extension block 270 slides on the guide post 280. A limit disk 310 for limiting the sliding distance of the weighing member 130 is provided at the top of the guide post 280.

[0032] With the above structure, when the weighing member 130 is pressed to the bottom and the pesticides inside the storage cavity 210 are completely poured out, and then the weighing member 130 is released, the spring sleeved outside the guide post 280 will push the extension block 270 to move upward, thereby driving the weighing member 130 to move upward, realizing the rapid connection between the feed port 220 and the docking end 250, and further improving the efficiency of pesticide proportioning. At the same time, the limit disk 310 will limit the sliding distance of the extension block 270, preventing the weighing member 130 from continuing to move after the feed port 220 is docked with the docking end 250, and improving the accuracy of the docking between the feed port 220 and the docking end 250.

[0033] As shown in the figure Figure 2-4 As shown in the figure, in this embodiment, the support assembly 170 further includes a moving groove 410 opened along the height direction on the outer wall of the guide post 280. A positioning ring 420 is sleeved on the outer wall of the guide post 280. The positioning ring 420 has a positioning portion 430 that slides with the moving groove 410. A first annular groove 440 is opened at the top of the moving groove 410. The positioning portion 430 is slidably connected to the first annular groove 440 to limit the extension block 270 by the positioning ring 420. The support assembly 170 further includes a second annular groove 450 opened at the top of the moving groove 410. The positioning portion 430 is slidably connected to the second annular groove 450 to limit the spring driving force by the positioning ring 420.

[0034] With the above structure, when the extension block 270 slides on the guide post 280, the positioning ring 420 will slide on the moving groove 410 through the positioning portion 430. When the extension block 270 slides to the position where it is in contact with the limit disk 310, the positioning ring 420 will be located at the position of the first annular groove 440 under the push of the spring. Rotate the positioning ring 420 so that the positioning portion 430 is offset from the moving groove 410, and the positioning ring 420 will position the extension block 270. When pesticide proportioning is required, then rotate the positioning portion 430 back to the moving groove 410 to cancel the limit on the extension block 270, improving the stability of the feeding process of the storage cavity 210; meanwhile, when the feeding port 220 is separated from the lifting channel 120 and the pesticide is being poured, the positioning ring 420 will be located at the position of the second annular groove 450. Rotate the positioning ring 420 so that the positioning portion 430 is offset from the moving groove 410, and the positioning ring 420 can limit the spring thrust, eliminating the need for manual continuous pressing of the weighing member 130 and improving the practicality of the device.

[0035] In addition, this embodiment further provides a pesticide spraying device, which includes: a mixing tank 180 for mixing multiple pesticides. A plurality of the variable proportioning mechanisms described in any one of the above embodiments are provided at the mixing tank 180. The mixing tank 180 has a mixing cavity for containing pesticides, and a plurality of communication holes 290 are opened at the top of the mixing cavity for the weighing members 130 to penetrate into and pour pesticides into the inner cavity of the mixing tank 180.

[0036] With the above structure, the mixing tank 180 is provided with a plurality of variable proportioning mechanisms. The staff operates the plurality of variable proportioning mechanisms, causing the bottoms of the plurality of weighing members 130 containing different pesticides to penetrate into the communication holes 290 and pour the pesticides they contain, so that the pesticides in the weighing members 130 enter the mixing cavity, thereby realizing the rapid mixing and proportioning of multiple pesticides.

[0037] It is easy to understand that those skilled in the art can combine, split, recombine, etc. the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0038] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the embodiments is only part of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by this and, without departing from the creative purpose of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A variable ratio mechanism, characterized in that, A lifting channel (120) is vertically penetrated through a fixing frame (110), and a weighing member (130) is arranged in the lifting channel (120). The weighing member (130) has a storage cavity (210) for storing pesticides. A feed inlet (220) is arranged at the bottom of the side wall of the storage cavity (210). The feeding pipe (160) has a docking end (250) corresponding to the feed inlet (220). A water pump (260) for extracting pesticides and conveying them to the storage cavity (210) is arranged at the opposite end of the docking end (250) of the feeding pipe (160). The weighing member (130) slides in the lifting channel (120) to realize the extraction and discharge of the liquid inside the storage cavity (210).

2. The variable ratio mechanism according to claim 1, characterized in that: The weighing member (130) includes a limiting block (230) located at the top of the storage cavity (210). A limiting portion (240) is vertically penetrated through the middle of the limiting block (230). A quantitative member (140) is threadedly connected in the limiting portion (240), and the quantitative member (140) slides in the storage cavity (210). An air passage (320) for gas circulation is vertically penetrated through the bottom of the quantitative member (140). A blocking valve (330) for blocking liquid is arranged at the bottom of the inner wall of the air passage (320).

3. A variable ratio mechanism according to claim 1 or 2, characterized in that: An extension block (270) is arranged on the side wall of the limiting block (230). A support assembly (170) is arranged at the top of the fixing frame (110). The support assembly (170) includes a guiding column (280) arranged along the sliding direction of the weighing member (130) at the top of the fixing frame (110). The extension block (270) slides on the guiding column (280), and a limiting disc (310) for limiting the sliding distance of the weighing member (130) is arranged at the top of the guiding column (280).

4. The variable ratio mechanism according to claim 3, wherein: The support assembly (170) further includes a spring sleeved outside the guiding column (280), and the spring is used to push the extension block (270) to abut against the limiting disc (310).

5. A variable ratio mechanism according to claim 4, characterized in that: The support assembly (170) further includes a moving groove (410) vertically opened on the outer wall of the guiding column (280). A positioning ring (420) is sleeved on the outer wall of the guiding column (280). The positioning ring (420) has a positioning portion (430) that slides with the moving groove (410). A first annular groove (440) is opened at the top of the moving groove (410). The positioning portion (430) is slidably connected with the first annular groove (440) to limit the extension block (270) by the positioning ring (420).

6. The variable ratio mechanism according to claim 5, characterized in that: The support assembly (170) further includes a second annular groove (450) opened at the top of the moving groove (410). The positioning portion (430) is slidably connected with the second annular groove (450) to limit the pushing force of the spring by the positioning ring (420).

7. A spraying device, characterized in that: It includes a mixing tank (180) for mixing multiple pesticides. A plurality of variable ratio mechanisms as described in any one of claims 1-6 are arranged at the mixing tank (180). The mixing tank (180) has a mixing cavity for containing pesticides. A plurality of communication holes (290) for the weighing member (130) to penetrate into and pour pesticides into the inner cavity of the mixing tank (180) are opened at the top of the mixing cavity.

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