Sealing structure for an agricultural sprayer

Abstract

The utility model discloses a sealing structure of agricultural spraying device, including the sealing element of setting in the end surface of drain, sealing element is equipped with at least one hole position, this hole position lets in the drain, sealing element can seal the junction of any spray head water inlet and drain that sets on the top end surface of multi -head shower, the distribution range of sealing element covers the rotation track of any spray head water inlet, and any spray head water inlet is in any position all is sealed by sealing element, and external air can not enter spray head water inlet. The design can keep sealing to any spray head water inlet moment, cut off the communication of external air and spray head inner chamber, avoid external air to enter spray head inner chamber through spray head water inlet. In this way, the pesticide liquid in spray head inner chamber only receives the effect from the atmospheric pressure of spray nozzle, and the pesticide liquid is kept in the spray head and will not drip, avoids the waste, also avoids the harm operator.

Description

Technical Field

[0001] This utility model relates to the agricultural field, specifically to pesticide spraying equipment. Background Technology

[0002] This agricultural sprayer has a clamp at the top that secures it to a water pipe. The sprayer's top inlet mates with the water pipe's drain hole. Pesticide from the water pipe enters the sprayer's inner cavity through the inlet. The inner cavity has a drain hole that connects to the nozzle. When the valve on the sprayer is opened, the pesticide from the inner cavity enters the nozzle through the drain hole and is then sprayed outwards. When the valve is closed, the water flow in the sprayer's inner cavity is blocked.

[0003] Agricultural sprayers utilize multi-head nozzles to produce various water spray patterns, catering to diverse usage scenarios. The top surface of each multi-head nozzle aligns with the drain outlet surface, and the top surface features several nozzle inlets, one inlet corresponding to one nozzle. The multi-head nozzle is pivotally connected to the sprayer body; by rotating the nozzle, the drain outlet can be aligned with any nozzle inlet. A sealing ring at the drain outlet seals the connection between the aligned outlet and the nozzle inlet.

[0004] When the operator rotates the multi-head nozzle, it disconnects from the inlet of the drain outlet. Since it is no longer sealed by the sealing ring, air enters the inlet. Under the action of gravity, the pesticide residue inside the nozzle flows out through the nozzle and drips onto the operator's hands, causing skin damage. Utility Model Content

[0005] The technical problem solved by this utility model is that when the operator rotates the multi-head nozzle of the agricultural sprayer, the nozzle inlet is separated from the drain outlet of the sprayer body. Since it is no longer sealed by the drain outlet sealing ring, air enters the inlet. Under the action of gravity, the pesticide residue inside the nozzle flows out through the nozzle and drips onto the operator's limbs, causing damage to the skin.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sealing structure for agricultural sprayers, including a sealing element disposed on the end face where the drain outlet is located. The sealing element has at least one hole, which is located at the drain outlet. The sealing element can seal the connection between the water inlet and the drain outlet of any spray head disposed on the top surface of a multi-head spray head. The distribution range of the sealing element covers the rotation trajectory of any spray head water inlet. Any spray head water inlet is sealed by the sealing element at any position, and external air cannot enter the spray head water inlet.

[0007] According to the above technical solution, the multi-head sprayer rotates relative to the main body of the sprayer, aligning the inlet and outlet of any one nozzle. The connection between the inlet and outlet is sealed by a sealant. When the operator rotates the multi-head sprayer, the inlet moves away from the outlet, but remains sealed, preventing outside air from entering. Atmospheric pressure acts on the pesticide inside the nozzle through the nozzle, preventing it from flowing out. Thus, when the operator rotates the multi-head sprayer, pesticide will not drip from any of the nozzles, avoiding injury to the operator.

[0008] Alternatively, the seal may be annular.

[0009] Alternatively, the seal may include a plurality of interconnected sealing rings forming an annulus, wherein one sealing ring surrounds the drain outlet.

[0010] Alternatively, the end face where the drain outlet is located has a recessed structure, and the seal is embedded in the recessed structure.

[0011] The sealing structure of this invention can keep any nozzle inlet sealed at all times, cutting off the communication between external air and the nozzle cavity, and preventing external air from entering the nozzle cavity through the nozzle inlet. In this way, the pesticide in the nozzle cavity is only affected by the atmospheric pressure from the nozzle, keeping the pesticide inside the nozzle and preventing dripping, thus avoiding waste and injury to the operator. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of an agricultural sprayer;

[0014] Figure 2 for Figure 1 Exploded view;

[0015] Figure 3 for Figure 2 The exploded view;

[0016] Figure 4 To view from the rear and above Figure 2 A schematic diagram obtained from the exploded view.

[0017] Explanation of symbols in the diagram:

[0018] 10. Sprayer body; 11. End face where the drain outlet is located; 12. Drain outlet; 13. Recessed structure; 14. Positioning groove, which mates with the spring clip of the multi-head nozzle; 15. U-pin, which installs the multi-head nozzle on the sprayer body;

[0019] 20. Seal; 21. Hole opening for drain outlet; 22. Sealing ring;

[0020] 30. Multi-head nozzle; 31. Top surface of multi-head nozzle; 32. Nozzle inlet; 33. Spring, which mates with the positioning groove on the main body of the sprayer to position the multi-head nozzle; 34. Pivot groove, which mates with the U-shaped pin. Detailed Implementation

[0021] refer to Figure 2 , Figure 4 The sealing structure of the agricultural sprayer includes a sealing element 20 disposed on the end face 11 where the drain outlet is located. The sealing element has at least one hole that is located at the drain outlet. The sealing element can seal the connection between the water inlet 32 ​​of any nozzle and the drain outlet 12 on the top surface 31 of the multi-head nozzle. The distribution range of the sealing element 20 covers the rotation trajectory of any water inlet 32 ​​of the nozzle. Any water inlet of the nozzle is sealed by the sealing element in any position, and external air cannot enter the water inlet of the nozzle.

[0022] The seal 20 is annular.

[0023] like Figure 3 The sealing element 20 includes a plurality of connected sealing rings 22, which form an annular ring, wherein one sealing ring surrounds the drain outlet 12.

[0024] like Figure 3 The end face 11 where the drain outlet is located is provided with a recessed structure 13, and the sealing element 20 is embedded in the recessed structure.

[0025] The operator holds the multi-head nozzle 30 and rotates it relative to the sprayer body 10. When any nozzle inlet 32 ​​is aligned with the outlet 12, the connection between the inlet and outlet is sealed by the seal 20. When the operator rotates the multi-head nozzle 30, the inlet 32 ​​moves away from the outlet 12, but remains sealed by the seal 20, preventing external air from entering. Atmospheric pressure acts on the pesticide inside the nozzle through the nozzle at the bottom, preventing it from dripping.

[0026] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sealing structure for an agricultural sprayer, comprising a sealing element (20) disposed on the end face (11) where the drain outlet is located, the sealing element having at least one hole that yields to the drain outlet, the sealing element being capable of sealing the connection between the water inlet (32) of any nozzle and the drain outlet (12) disposed on the top surface (31) of a multi-head sprayer, characterized in that: The distribution range of the seal (20) covers the rotation trajectory of any nozzle inlet (32), and any nozzle inlet is sealed by the seal at any position, preventing external air from entering the nozzle inlet.

2. The sealing structure of the agricultural sprayer as described in claim 1, characterized in that: The seal (20) is annular.

3. The sealing structure of the agricultural sprayer as described in claim 1, characterized in that: The seal (20) includes a plurality of connected sealing rings (22), which form an annular ring, wherein one sealing ring surrounds the drain outlet (12).

4. The sealing structure of the agricultural sprayer as described in any one of claims 1-3, characterized in that: The end face (11) where the drain outlet is located is provided with a recessed structure (13), and the sealing element (20) is embedded in the recessed structure.

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