A rotationally molded sprayer housing

Abstract

This utility model discloses a rotationally molded sprayer housing, including a medicine tank and a water tank. The bottom of the medicine tank has a mounting position recessed towards the inside of the medicine tank, the inner wall of which forms a retaining surface. At least one pre-embedded groove recessed into the retaining surface is provided in the mounting position. The bottom of the pre-embedded groove has a set distance greater than zero from the inner sidewall of the medicine tank. In this utility model, the water tank can be fixed to the bottom of the medicine tank by the cooperation of the positioning groove and the retaining surface, thereby reducing the difficulty of disassembling and assembling the water tank. At the same time, since the water tank is fixed to the bottom of the medicine tank, no multiple people are needed to carry it during disassembly and assembly. Specifically, when installing the water tank, the inner sidewall of the positioning groove is directly attached to the surface of the retaining surface, so that the medicine tank and the water tank form a sliding plug-in structure that moves relative to each other only in the vertical direction. Then, the connector is passed through the connecting hole and extends into the pre-embedded groove to achieve the fixation of the medicine tank and the water tank.

Description

Technical Field

[0001] This utility model relates to the field of sprayer housing technology, specifically to a rotationally molded sprayer housing. Background Technology

[0002] Agricultural and forestry plant protection machinery sprayers all need to be equipped with a pesticide tank and a water tank. The existing pesticide tank and water tank are placed separately, which takes up a lot of space, is not compact in installation, and is inconvenient to use.

[0003] To address this issue, existing technologies, such as patent document with application number CN201620416963.4, disclose a combined sprayer rotomolded box structure. The structure features a specially designed mating structure for the medicine tank and water tank, with interlocking positioning slots. During assembly, the parts can be quickly snapped into place by hand. After assembly, the water tank and medicine tank form a unified geometric unit, occupying little space and being convenient to install and use.

[0004] Patent document CN216931576U also discloses a technical solution for setting up a water tank on top.

[0005] Although the technical solutions disclosed in the aforementioned patent documents have solved the problems of non-compact installation and large space occupation, they still have limitations in practical use, as follows:

[0006] In the technical solutions disclosed in the aforementioned patent documents, the water tank is located above the medicine box. This layout allows for normal disassembly and assembly when the medicine box is small, but if the medicine box is large, the process of disassembling and assembling the water tank becomes more inconvenient, often requiring the use of ladders or other tools to climb to a higher position for operation.

[0007] Meanwhile, the design of placing the water tank on top of the medicine tank is also not conducive to handling. When the water tank is full of water, it is quite heavy, often requiring multiple people to move it, which is complicated and poses safety hazards, and also objectively increases the difficulty of disassembly and assembly.

[0008] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0009] This utility model provides a rotationally molded sprayer housing, which aims to solve the technical problems mentioned in the background art.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rotationally molded sprayer housing, comprising a medicine tank and a water tank; the bottom of the medicine tank has a mounting position recessed towards the inside of the medicine tank, the inner wall of which forms a retaining surface, and the mounting position is provided with at least one pre-embedded groove recessed in the retaining surface, the bottom of the pre-embedded groove having a set distance greater than zero from the inner sidewall of the medicine tank; the top of the water tank has a recessed positioning groove at a position corresponding to the mounting position, the positioning groove matching the retaining surface, and the inner sidewall of the positioning groove and the surface of the retaining surface being connected. The tank and water tank are fitted together to form a sliding plug-in structure that allows relative movement only in the vertical direction. The water tank has multiple connecting holes that extend from the outer surface of the water tank to the inner wall of the groove edge of the positioning groove. Each pre-embedded groove is provided in a one-to-one correspondence with each connecting hole to form multiple connection mating positions. The tank also includes multiple connectors, each connector being provided in a one-to-one correspondence with each connection mating position. When the inner wall of the positioning groove is fitted with the surface of the retaining surface, the connecting hole coincides with the axis of the pre-embedded groove, and the connector is configured to pass through the connecting hole and extend into the pre-embedded groove.

[0011] The relevant content in the above plan is explained as follows:

[0012] In the above scheme, the bottom of the pre-embedded trench must not extend into the medicine tank to prevent leakage of the medicine.

[0013] In the above scheme, at least one pre-embedded groove is set, usually 2-4, and it is set above the card block surface. The location above is determined based on the height direction of the medicine box, and the bottom of the medicine box is below the card block surface.

[0014] In the above scheme, the positioning groove can be set on the edge or corner of the bottom of the medicine tank, or other parts of the bottom that can fix the water tank.

[0015] In the above scheme, the installation position is formed by a recess, so the inner wall of the installation position can play a limiting role to prevent the water tank from moving along the length of the medicine tank.

[0016] In the above scheme, the axes of the connecting hole and the pre-embedded groove must coincide, but the axes of the two can be at a set angle to the surface of the medicine box. For example, if the axes of the connecting hole and the pre-embedded groove are inclined, the connector will also be fixed in the pre-embedded groove at an inclination.

[0017] Generally, the connection hole is sealed to the inside of the water tank to prevent water from leaking out of the connection hole.

[0018] In the above solution, the water tank can be fixed to the bottom of the medicine box by the cooperation of the positioning groove and the card block surface, so as to reduce the difficulty of disassembling and assembling the water tank. At the same time, since the water tank is fixed to the bottom of the medicine box, no multiple people are needed to carry it during disassembly and assembly. Specifically, when installing the water tank, the inner side wall of the positioning groove is directly attached to the surface of the card block surface, so that the medicine box and the water tank form a sliding plug-in structure that moves relative to each other only in the vertical direction. Then, the connector is passed through the connecting hole and extended into the pre-embedded groove to achieve the fixation of the medicine box and the water tank.

[0019] Unlike the prior art patent document with application number CN201620416963.4, the water tank in this application is installed at the bottom of the medicine box. Even if the medicine box is large, it can be disassembled and assembled without being moved, which reduces the difficulty of disassembly and assembly.

[0020] Furthermore, unlike the patent document with publication number CN216931576U, which discloses a technical solution for slotting the bottom of the medicine tank, the slot is mainly used to store the spraying pump, while the installation position in this application is for accommodating the water tank.

[0021] Furthermore, each of the pre-embedded grooves is pre-embedded with an annular insert sleeve. The inner hole of the annular insert sleeve is a threaded hole, which is used to cooperate with the connector to achieve the positioning of the medicine box and the water tank. The outer peripheral surface of the annular insert sleeve has a protrusion. During the rotational molding process of the medicine box, the molten plastic material tightly fills and completely covers the protrusion. After solidification, it forms a firm mechanical interlocking structure, thereby anchoring the annular insert sleeve in the inner wall of the pre-embedded groove.

[0022] The annular insert is pre-embedded in a pre-embedded groove, and then fixed by the cooling and shaping of the medicine box. This allows for a quick and easy fixing of the connector.

[0023] In a further technical solution, the cross-section of the positioning groove is U-shaped.

[0024] The above design is used to fully match and fit the card holder surface.

[0025] In a further technical solution, the mounting position is located at the lower corner of the medicine box;

[0026] The card-blocking surface includes a first block and a second block arranged opposite to each other along the height direction of the medicine box. An arc surface is provided between the bottom of the first block and the second block. The first block and the second block are formed by the inward concavity of the side surface below the medicine box, and the arc surface is formed by the upward concavity of the bottom surface below the medicine box. The first block, the second block, and the arc surface together form a U-shaped structure with a cross-section. The U-shaped structure is matched with the positioning groove.

[0027] Based on the design of the U-shaped structure formed by the first and second abutments and the arc surface, the medicine tank and water tank can be guided to slide smoothly in the vertical direction without jamming due to the uniform gap fit between the outer contour and the inner wall of the positioning groove, while the horizontal displacement degree of freedom is constrained by the surface contact.

[0028] A further technical solution includes a side panel formed by a recess in the width direction of the medicine box. The side panel is connected to the first panel, the second panel, and the arc surface, and the connection between the four is a continuous smooth curved surface transition. The positioning groove is formed by a recess in the top surface of the water tank, and the positioning groove is rectangular, with one end open and the other end closed. When the inner wall of the positioning groove is in contact with the surface of the card block, the water tank is limited in the length direction of the medicine box through the abutting cooperation between the side panel and the closed end of the positioning groove.

[0029] With the above design, the water tank is limited in the length direction of the medicine tank by the abutting fit between the side baffle and the closed end of the positioning groove, so as to prevent the water tank from sliding in the length direction of the medicine tank.

[0030] A further technical solution includes a bolt for threading into and engaging with a pre-embedded groove, and a punch sleeve for fitting onto the end of the bolt; the connecting hole includes a flared portion and a constricted portion disposed from the outer surface of the water tank toward the positioning groove; the flared portion and the constricted portion are coaxially arranged, and when the connector passes through the connecting hole and extends into the pre-embedded groove, the flared portion is configured to limit the punch sleeve; the diameter of the flared portion is larger than the diameter of the constricted portion.

[0031] With the above design, the water tank and medicine tank are connected by bolts, and the bushing is generally made of polyurethane material to reduce the wear of the bolts on the water tank.

[0032] A further technical solution involves providing multiple extension blocks on the first and / or second abutment surfaces, wherein the outer surface contour of the extension blocks matches the inner sidewall contour of the positioning groove; and the pre-embedded groove is formed recessed within the outer surface of the extension blocks.

[0033] The pre-embedded groove is preferably set on both the first and second stop surfaces.

[0034] The above design ensures that the pre-embedded groove has a certain depth without causing the gap between the bottom of the groove and the inner wall of the medicine box to be too small.

[0035] Working principle: When installing the water tank, the inner wall of the positioning groove directly abuts against the surface of the retaining surface, so that the medicine tank and the water tank form a sliding plug-in structure that moves relative to each other only in the vertical direction. At this time, the U-shaped structure formed by the first retaining surface, the second retaining surface and the arc surface abut against the positioning groove. Then, the side retaining surface abuts against the closed end of the positioning groove to limit the water tank in the length direction of the medicine tank, so as to prevent the water tank from sliding in the length direction of the medicine tank. Then, the connector is passed through the connecting hole and extends into the pre-embedded groove to achieve the fixation of the medicine tank and the water tank.

[0036] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0037] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0038] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0039] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0040] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0041] The working principle and advantages of this utility model are as follows:

[0042] In this invention, the water tank can be fixed to the bottom of the medicine box by the cooperation of the positioning groove and the card block surface, thereby reducing the difficulty of disassembling and assembling the water tank. At the same time, since the water tank is fixed to the bottom of the medicine box, no multiple people are needed to carry it during disassembly and assembly. Specifically, when installing the water tank, the inner side wall of the positioning groove is directly attached to the surface of the card block surface, so that the medicine box and the water tank form a sliding plug-in structure that moves relative to each other only in the vertical direction. Then, the connector is passed through the connecting hole and extended into the pre-embedded groove to achieve the fixation of the medicine box and the water tank.

[0043] Unlike the prior art patent document with application number CN201620416963.4, the water tank in this application is installed at the bottom of the medicine box. Even if the medicine box is large, it can be disassembled and assembled without being moved, which reduces the difficulty of disassembly and assembly.

[0044] Furthermore, unlike the patent document with publication number CN216931576U, which discloses a technical solution for slotting the bottom of the medicine tank, the slot is mainly used to store the spraying pump, while the installation position in this application is for accommodating the water tank. Attached Figure Description

[0045] Appendix Figure 1 This is a schematic diagram of the structure when the medicine box and water tank are connected in an embodiment of this utility model;

[0046] Appendix Figure 2 This is a schematic diagram of the structure of the medicine box and water tank when disassembled in an embodiment of this utility model;

[0047] Appendix Figure 3 This is a schematic diagram of the longitudinal section structure of the water tank in an embodiment of this utility model;

[0048] Appendix Figure 4 This is a schematic diagram of the positioning groove structure in an embodiment of the present utility model;

[0049] Appendix Figure 5 This is a schematic diagram of the structure of the first and second baffles in an embodiment of the present invention;

[0050] Appendix Figure 6 This is a schematic diagram of the flared portion structure in an embodiment of the present utility model;

[0051] Appendix Figure 7 This is a schematic diagram of the connector structure in an embodiment of the present utility model;

[0052] Appendix Figure 8 This is a schematic diagram of the annular inlay sleeve structure in an embodiment of this utility model.

[0053] In the attached diagrams: 1. Medicine box; 2. Water tank; 3. Installation position; 4. Embedded groove; 5. Positioning groove; 6. Connecting hole; 7. Connector; 8. First stop; 9. Second stop; 10. Arc surface; 11. Side stop; 12. Bolt; 13. Punch sleeve; 14. Flared part; 15. Narrowed part; 16. Extension block; 17. Annular inlay sleeve. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0055] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0056] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0057] See appendix Figures 1-8 As shown, a rotationally molded sprayer housing includes a medicine tank 1 and a water tank 2. The bottom of the medicine tank 1 has a recessed mounting position 3, the inner wall of which forms a retaining surface. At least one pre-embedded groove 4 is recessed within the retaining surface of the mounting position 3. The bottom of the pre-embedded groove 4 has a predetermined distance greater than zero from the inner wall of the medicine tank 1. The top of the water tank 2 has a recessed positioning groove 5 corresponding to the mounting position 3. The positioning groove 5 matches the retaining surface, and the inner wall of the positioning groove 5 fits against the surface of the retaining surface, allowing the medicine tank 1 and water tank 2 to... The tank 2 is a sliding plug-in structure that moves only in the vertical direction. The tank 2 is provided with a plurality of connecting holes 6 that extend from the outer surface of the tank 2 to the inner sidewall of the groove edge of the positioning groove 5. Each of the pre-embedded grooves 4 and each of the connecting holes 6 are provided one-to-one to form a plurality of connection mating positions. It also includes a plurality of connectors 7, each of the connectors 7 and each of the connection mating positions are provided one-to-one. When the inner sidewall of the positioning groove 5 is in contact with the surface of the card block, the axis of the connecting hole 6 coincides with the axis of the pre-embedded groove 4, and the connector 7 is configured to pass through the connecting hole 6 and extend into the pre-embedded groove 4.

[0058] In this embodiment, the bottom of the pre-embedded groove 4 cannot extend into the medicine tank 1 to prevent leakage of the medicine.

[0059] In this embodiment, at least one pre-embedded groove 4 is provided, generally 2-4, and it is located above the card block surface. The location above is determined based on the height direction of the medicine box 1, and the bottom of the medicine box 1 is below the card block surface.

[0060] In this embodiment, the positioning groove 5 can be set at the edge or corner of the bottom of the medicine box 1, or at other parts of the bottom that can fix the water tank 2.

[0061] In this embodiment, the mounting position 3 is formed by a recess, so the inner sidewall of the mounting position 3 can play a limiting role to prevent the water tank 2 from moving along the length of the medicine tank 1.

[0062] In this embodiment, the axes of the connecting hole 6 and the pre-embedded groove 4 must coincide, but the axes of the two can be at a set angle to the surface of the medicine box 1. For example, the axes of the connecting hole 6 and the pre-embedded groove 4 are inclined, and the connector 7 will also be fixed in the pre-embedded groove 4 at an incline.

[0063] In this invention, the water tank 2 can be fixed to the bottom of the medicine box 1 by the cooperation of the positioning groove 5 and the card block surface, so as to reduce the difficulty of disassembling and assembling the water tank 2. At the same time, since the water tank 2 is fixed to the bottom of the medicine box 1, no multiple people are needed to carry it during disassembly and assembly. Specifically, when installing the water tank 2, the inner side wall of the positioning groove 5 is directly attached to the surface of the card block surface so that the medicine box 1 and the water tank 2 form a sliding plug-in structure that moves relative to each other only in the vertical direction. Then, the connector 7 is passed through the connecting hole 6 and extended into the pre-embedded groove 4 to achieve the fixation of the medicine box 1 and the water tank 2.

[0064] Unlike the prior art patent document with application number CN201620416963.4, the water tank 2 in this application is installed at the bottom of the medicine box 1. Even if the medicine box 1 is large in size, it does not need to be moved when disassembling and assembling, which reduces the difficulty of disassembly and assembly.

[0065] At the same time, it differs from the patent document with publication number CN216931576U in the technology. Although the patent document discloses a technical solution of opening a groove at the bottom of the medicine tank 1, the groove is mainly used to store the medicine pump. In contrast, the installation position 3 in this application is for accommodating the water tank 2.

[0066] Preferably, the cross-section of the positioning groove 5 is U-shaped.

[0067] The above design is used to fully match and fit the card holder surface.

[0068] Each of the pre-embedded grooves 4 is pre-embedded with an annular insert 17. The inner hole of the annular insert 17 is a threaded hole, which is used to cooperate with the connector 7 to achieve the positioning of the medicine tank 1 and the water tank 2. The outer peripheral surface of the annular insert 17 has a protrusion (not shown in the figure). During the rotational molding process of the medicine tank 1, the molten plastic material tightly fills and completely covers the protrusion. After solidification, a firm mechanical fitting structure is formed, thereby anchoring the annular insert 17 in the inner wall of the pre-embedded groove 4.

[0069] The annular insert 17 is pre-embedded in the pre-embedded groove 4, and then fixed by the cooling and shaping of the medicine box 1. This allows the connector 7 to be fixed quickly.

[0070] Preferably, the mounting position 3 is located at the lower corner of the medicine box 1;

[0071] The card-blocking surface includes a first blocking surface 8 and a second blocking surface 9 arranged opposite to each other along the height direction of the medicine box 1. An arc surface 10 is provided between the bottom of the first blocking surface 8 and the second blocking surface 9. The first blocking surface 8 and the second blocking surface 9 are formed by the indentation of the side surface below the medicine box 1, and the arc surface 10 is formed by the indentation of the bottom surface below the medicine box 1 facing upward. The first blocking surface 8, the second blocking surface 9 and the arc surface 10 together form a U-shaped structure with a cross-section. The U-shaped structure is matched with the positioning groove 5.

[0072] Based on the design of the U-shaped structure formed by the first stop surface 8, the second stop surface 9 and the arc surface 10, the medicine tank 1 and the water tank 2 can be guided to slide without jamming in the vertical direction due to the uniform gap fit between its outer contour and the inner wall of the positioning groove 5, while the horizontal displacement degree of freedom is constrained by the surface contact.

[0073] Preferably, the card-blocking surface further includes a side-blocking surface 11 formed concavely in the width direction of the medicine box 1. The side-blocking surface 11 is connected to the first blocking surface 8, the second blocking surface 9, and the arc surface 10, and the connection between the four is a continuous smooth curved surface transition. The positioning groove 5 is formed concavely in the top surface of the water tank 2, and the positioning groove 5 is rectangular, with one end open and the other end closed. When the inner sidewall of the positioning groove 5 is in contact with the surface of the card-blocking surface, the water tank 2 is limited in the length direction of the medicine box 1 through the abutting cooperation between the side-blocking surface 11 and the closed end of the positioning groove 5.

[0074] With the above design, the water tank 2 is limited in the length direction of the medicine tank 1 by the abutting cooperation between the side baffle 11 and the closed end of the positioning groove 5, so as to prevent the water tank 2 from sliding in the length direction of the medicine tank 1.

[0075] Preferably, the connector 7 includes a bolt 12 for threading into and engaging with the pre-embedded groove 4, and a punch 13 for fitting onto the end of the bolt 12; the connecting hole 6 includes a flared portion 14 and a constricted portion 15 disposed from the outer surface of the water tank 2 toward the positioning groove 5; the flared portion 14 and the constricted portion 15 are coaxially arranged, and when the connector 7 passes through the connecting hole 6 and extends into the pre-embedded groove 4, the flared portion 14 is configured to limit the punch 13; the diameter of the flared portion 14 is larger than the diameter of the constricted portion 15.

[0076] With the above design, the water tank 2 and the medicine tank 1 are connected by bolts 12, and the bushing 13 is generally made of polyurethane material to reduce the wear of the bolts 12 on the water tank 2.

[0077] Preferably, a plurality of extension blocks 16 are provided on the first stop surface 8 and / or the second stop surface 9, the outer surface contour of the extension block 16 matches the inner sidewall contour of the positioning groove 5; the pre-embedded groove 4 is recessed in the outer surface of the extension block 16.

[0078] The pre-embedded groove 4 is preferably set on both the first stop surface 8 and the second stop surface 9.

[0079] With the above design, the pre-embedded groove 4 has a certain depth, but the gap between the bottom of the pre-embedded groove 4 and the inner wall of the medicine box 1 is not too small.

[0080] Working principle: When installing water tank 2, the inner wall of the positioning groove 5 is directly attached to the surface of the card block, so that the medicine box 1 and water tank 2 form a sliding plug-in structure that moves relative to each other only in the vertical direction. At this time, the U-shaped structure formed by the first block surface 8, the second block surface 9 and the arc surface 10 abuts against the positioning groove 5. Then, the side block surface 11 abuts against the closed end of the positioning groove 5 to limit the water tank 2 in the length direction of the medicine box 1 to prevent the water tank 2 from sliding in the length direction of the medicine box 1. Then, the connector 7 is passed through the connecting hole 6 and extended into the pre-embedded groove 4 to achieve the fixation of the medicine box 1 and water tank 2.

[0081] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A roto-moulded sprayer tank characterised in that: Includes a medicine box (1) and a water tank (2); The bottom of the medicine box (1) has an installation position (3) that is recessed into the inside of the medicine box (1), the inner wall of which forms a blocking surface, and the installation position (3) is provided with at least one pre-embedded groove (4) that is recessed into the blocking surface. The bottom of the pre-embedded groove (4) has a set distance from the inner wall of the medicine box (1), and the set distance is greater than zero. The top of the water tank (2) is provided with a recessed positioning groove (5) corresponding to the mounting position (3). The positioning groove (5) is matched with the card block surface. The inner side wall of the positioning groove (5) is attached to the surface of the card block surface so that the medicine box (1) and the water tank (2) form a sliding plug-in structure that moves and separates only in the vertical direction. The water tank (2) is provided with a plurality of connecting holes (6) that extend from the outer surface of the water tank (2) to the inner side wall of the groove edge of the positioning groove (5); each of the pre-embedded grooves (4) is provided in a one-to-one correspondence with each of the connecting holes (6) to form a plurality of connection mating positions; It also includes multiple connectors (7), each connector (7) is provided in a one-to-one correspondence with each of the connection mating positions. When the inner sidewall of the positioning groove (5) is in contact with the surface of the card block, the connection hole (6) coincides with the axis of the pre-embedded groove (4). The connector (7) is configured to pass through the connection hole (6) and extend into the pre-embedded groove (4).

2. The roto-moulded pesticide spraying machine tank according to claim 1, characterised in that: Each of the pre-embedded grooves (4) is pre-embedded with an annular insert (17). The inner hole of the annular insert (17) is a threaded hole, which is used to cooperate with the connector (7) to achieve the positioning of the medicine box (1) and the water tank (2). The outer peripheral surface of the annular insert (17) has a protrusion. During the rotational molding process of the medicine box (1), the molten plastic material tightly fills and completely covers the protrusion. After solidification, a firm mechanical fitting structure is formed, thereby anchoring the annular insert (17) in the inner wall of the pre-embedded groove (4).

3. The roto-moulded pesticide spraying machine tank according to claim 2, characterised in that: The cross-section of the positioning groove (5) is U-shaped.

4. The roto-moulded sprayer tank of claim 2 or 3, characterised in that: The mounting position (3) is located at the lower corner of the medicine box (1); The card blocking surface includes a first blocking surface (8) and a second blocking surface (9) arranged opposite to each other along the height direction of the medicine box (1). An arc surface (10) is provided between the bottom of the first blocking surface (8) and the second blocking surface (9). The first blocking surface (8) and the second blocking surface (9) are formed by the indentation of the side surface below the medicine box (1). The arc surface (10) is formed by the indentation of the bottom surface below the medicine box (1) towards the top. The first baffle (8), the second baffle (9), and the arc surface (10) together form a U-shaped cross-section structure. The U-shaped structure is matched with the positioning groove (5).

5. The roto-moulded pesticide spraying machine tank according to claim 4, characterised in that: The card block surface also includes a side block surface (11) formed by recessing the surface of the medicine box (1) in the width direction. The side block surface (11) is connected to the first block surface (8), the second block surface (9) and the arc surface (10) at the same time, and the connection of the four is transitioned by a continuous smooth curved surface. The positioning groove (5) is formed by the indentation of the top surface of the water tank (2), and the positioning groove (5) is rectangular with one end open and the other end closed. When the inner wall of the positioning groove (5) is in contact with the surface of the card block, the water tank (2) is limited in the length direction of the medicine tank (1) by the abutment of the side block (11) and the closed end of the positioning groove (5).

6. The roto-molded sprayer tank of claim 1, wherein: The connector (7) includes a bolt (12) for passing through and threaded into the pre-embedded groove (4) and a punch (13) for fitting onto the end of the bolt (12). The connecting hole (6) includes a flared portion (14) and a constricted portion (15) disposed on the outer surface of the water tank (2) facing the positioning groove (5); The flared portion (14) and the constricted portion (15) are coaxially arranged. When the connector (7) passes through the connecting hole (6) and extends into the pre-embedded groove (4), the flared portion (14) is configured to limit the anti-flush sleeve (13). The diameter of the flared part (14) is larger than the diameter of the constricted part (15).

7. The rotationally molded sprayer housing according to claim 4, characterized in that: Multiple extension blocks (16) are provided on the first stop surface (8) and / or the second stop surface (9), and the outer surface contour of the extension block (16) matches the inner sidewall contour of the positioning groove (5); the pre-embedded groove (4) is formed recessed in the outer surface of the extension block (16).

Images