Liquid supply devices, spraying systems and unmanned equipment

Abstract

The utility model relates to the technical field of unmanned equipment, and specifically, to a liquid supply device, a spraying system and unmanned equipment; the liquid supply device includes a pump body, a pump cover, a flexible impeller and a sealing ring, the pump body is provided with an inner cavity and a liquid outlet and a liquid inlet communicated with the inner cavity; the impeller is rotatably arranged in the inner cavity, and when the impeller rotates, the liquid can be pumped in from the liquid inlet and pumped out from the liquid outlet; the pump cover is connected to the pump body to cover the opening of the inner cavity; the sealing ring is arranged at the top of the pump body and clamped between the pump cover and the pump body; wherein the sealing ring extends along the radial direction of the inner cavity to the top of the cavity wall of the inner cavity, so that a seal is formed between the pump cover and the top of the cavity wall of the inner cavity. The liquid supply device can seal the gap between the pump cover and the top of the cavity wall of the inner cavity to improve the problem of liquid leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned equipment, in particular to a liquid supply device, a spraying system and unmanned equipment. Background Art

[0002] Unmanned equipment can be used in agriculture, fire fighting and other fields, and when using unmanned equipment for related operations, it is necessary to carry various operating systems on the unmanned equipment body, such as spraying systems, sowing systems, etc. Among them, the spraying system can be used to spray water, liquid pesticides, etc.

[0003] The spraying system usually includes a liquid storage tank, a nozzle and a liquid supply device. The liquid storage tank is used to store liquid. The nozzle is connected to the liquid storage tank through the liquid supply device so that the liquid stored in the liquid storage tank is pumped to the nozzle for spraying through the liquid supply device; the liquid supply device includes a pump body and an impeller. The pump body is provided with an inner cavity and a liquid inlet and a liquid outlet connected to the inner cavity. The liquid inlet is connected to the liquid storage tank, and the liquid outlet is connected to the nozzle.

[0004] However, the liquid supply device provided in the related art has a gap between the pump cover and the top of the inner cavity wall of the pump body, which is prone to leakage. Utility Model Content

[0005] The utility model aims to provide a liquid supply device, a spraying system and unmanned equipment. The liquid supply device can seal the gap between a pump cover and the top of a cavity wall of an inner cavity to improve the problem of liquid leakage.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a liquid supply device, comprising:

[0008] A pump body, wherein the pump body is provided with an inner cavity and a liquid outlet and a liquid inlet communicated with the inner cavity;

[0009] A flexible impeller is rotatably disposed in the inner cavity, and when the impeller rotates, the liquid can be pumped in from the liquid inlet and out from the liquid outlet;

[0010] a pump cover connected to the pump body to cover the opening of the inner cavity; and

[0011] The sealing ring is arranged at the top of the pump body and clamped between the pump cover and the pump body; wherein the sealing ring extends radially along the inner cavity to the top of the cavity wall of the inner cavity, so as to form a seal between the pump cover and the top of the cavity wall of the inner cavity.

[0012] In an optional embodiment, the sealing ring has a first inner ring wall distributed toward the inner cavity, the first inner ring wall is aligned with the cavity wall of the inner cavity, and the impeller abuts against the first inner ring wall.

[0013] In an optional embodiment, the sealing ring includes a first sealing ring and a second sealing ring connected to the first sealing ring, and the first sealing ring is distributed on the inner side of the second sealing ring; an installation groove is provided at the end of the pump body, and the installation groove has a first groove wall close to the inner cavity, and a second groove wall distributed opposite to the first groove wall; the second sealing ring is inserted into the installation groove, the first sealing ring overlaps the end of the first groove wall, and the side of the first sealing ring away from the second sealing ring is the first inner ring wall.

[0014] In an optional embodiment, the sealing ring is connected to a sealing rib, and the sealing rib abuts against the pump cover.

[0015] In an optional embodiment, the sealing rib has a second inner annular wall extending toward the inner cavity, and the first inner annular wall is aligned with the second inner annular wall.

[0016] In an optional embodiment, the sealing ring is further provided with a deformation groove or a deformation cavity.

[0017] In an optional embodiment, a deformation groove is provided on a side of the sealing ring facing the pump cover.

[0018] In an optional embodiment, one of the pump body and the sealing ring is provided with a limiting groove, and the other of the pump body and the sealing ring is provided with a limiting protrusion, and the limiting protrusion is plugged into the limiting groove to prevent the sealing ring from rotating relative to the pump body.

[0019] In an optional embodiment, the liquid inlet is used to connect to a liquid storage tank of the unmanned equipment; and the liquid outlet is used to connect to a nozzle of the unmanned equipment.

[0020] In a second aspect, the utility model provides a spraying system, comprising:

[0021] A liquid storage tank for storing liquid;

[0022] a spray head for spraying liquid; and,

[0023] In the liquid supply device of any of the aforementioned embodiments, the liquid inlet is connected to the liquid storage tank, and the liquid outlet is connected to the nozzle.

[0024] In a third aspect, the utility model provides an unmanned equipment, comprising an unmanned equipment body and a liquid supply device as in any one of the aforementioned embodiments or a spraying system as in the aforementioned embodiments arranged on the unmanned equipment body.

[0025] The beneficial effects of the liquid supply device of the embodiment of the utility model include: the liquid supply device provided by the embodiment of the utility model includes a pump body, a pump cover, a flexible impeller and a sealing ring; the impeller is rotatably arranged in the inner cavity of the pump body, the pump cover is connected to the pump body to cover the opening of the inner cavity, the sealing ring is arranged at the top of the pump body and clamped between the pump cover and the pump body; wherein the sealing ring extends along the radial direction of the inner cavity to the top of the cavity wall of the inner cavity, so that a seal is formed between the pump cover and the top of the cavity wall of the inner cavity. In this way, the sealing ring can be used to seal the gap between the pump cover and the top of the cavity wall of the inner cavity to improve the problem of liquid leakage.

[0026] The spraying system of the embodiment of the utility model includes all the beneficial effects of the aforementioned liquid supply device, for example, improving the problem of liquid leakage.

[0027] The unmanned equipment of the embodiment of the utility model includes all the beneficial effects of the aforementioned liquid supply device or spraying system, for example: improving the problem of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the structure of the liquid supply device in the embodiment of the utility model;

[0030] Figure 2 for Figure 1 Sectional view in the AA direction;

[0031] Figure 3 It is a partial structural schematic diagram of the liquid supply device in the embodiment of the utility model;

[0032] Figure 4 for Figure 2 The enlarged view of the middle IV;

[0033] Figure 5 It is a schematic diagram of the structure of the sealing ring in the embodiment of the utility model.

[0034] Icons: 010-liquid supply device; 100-pump body; 110-inner cavity; 111-chamber; 120-liquid inlet connector; 121-liquid inlet; 130-liquid outlet connector; 131-liquid outlet; 140-installation groove; 141-first groove wall; 142-second groove wall; 143-limiting groove; 150-pump cover; 151-gap; 200-impeller; 210-impeller body; 220-blades; 300-sealing ring; 301-first inner ring wall; 310-first sealing ring; 320-second sealing ring; 330-sealing rib; 331-second inner ring wall; 340-deformation groove; 350-limiting protrusion. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] This embodiment provides an unmanned equipment, which includes an unmanned equipment body and a spraying system installed on the unmanned equipment body; the unmanned equipment body can carry the spraying system and move synchronously, and the spraying system can be used to spray liquid materials such as water and liquid pesticides.

[0041] The unmanned equipment body of this embodiment is a drone; of course, in other embodiments, the unmanned equipment body may also refer to an unmanned vehicle, a robot, etc., which is not specifically limited here.

[0042] It should be noted that the structure and working principle of the unmanned equipment body are similar to those of related technologies and will not be repeated here.

[0043] The spraying system includes a liquid storage tank, a spray head and a liquid supply device 010 (such as Figure 1 and Figure 2 As shown), the liquid storage tank is used to store the liquid to be sprayed, the nozzle is connected to the liquid storage tank through the liquid supply device 010, and the nozzle is used to spray the liquid; the liquid supply device 010 is used to pump the liquid in the liquid storage tank to the nozzle for spraying.

[0044] Optionally, the liquid supply device 010 can be connected to at least one of the liquid storage tank and the unmanned equipment body, and the connection methods include but are not limited to snap-on connection, connection with fasteners such as bolts, etc.

[0045] For further information, please refer to Figure 1 , Figure 2 and Figure 3 The liquid supply device 010 includes a pump body 100 and a flexible impeller 200. The pump body 100 is provided with an inner cavity 110 and a liquid outlet 131 and a liquid inlet 121 connected to the inner cavity 110. The liquid inlet 121 is connected to the liquid storage tank, and the liquid outlet 131 is connected to the nozzle. The impeller 200 is rotatably arranged in the inner cavity 110. When the impeller 200 rotates, the liquid can be pumped into the liquid inlet 121 and pumped out from the liquid outlet 131. In this way, the impeller 200 can be rotated to pump the liquid in the liquid storage tank from the liquid inlet 121 into the inner cavity 110, and pumped to the nozzle from the liquid outlet 131, so as to ensure the reliability of liquid supply.

[0046] Optionally, the pump body 100 is connected to a liquid outlet joint 130 and a liquid inlet joint 120, the liquid outlet joint 130 is provided with a liquid outlet 131, the liquid inlet joint 120 is provided with a liquid inlet 121, the liquid outlet joint 130 is connected to the nozzle, and the liquid inlet joint 120 is connected to the liquid storage tank.

[0047] The connection methods of the pump body 100 and the liquid outlet connector 130 and the liquid inlet connector 120 include but are not limited to integral molding and threaded connection.

[0048] Optionally, the impeller 200 includes an impeller body 210 and a plurality of soft blades 220, wherein the impeller body 210 is rotatably disposed in the inner cavity 110; the plurality of blades 220 are all connected to the impeller body 210 and are disposed in the inner cavity 110 at intervals along the circumference of the impeller body 210 to divide the inner cavity 110 into a plurality of chambers 111, that is, a chamber 111 is formed together between two adjacent blades 220 and the cavity wall of the inner cavity 110.

[0049] The blade 220 is flexible, and the end of the blade 220 away from the impeller body 210 can be squeezed by the cavity wall of the inner cavity 110, so that the blade 220 is bent into an arc, and the end of the blade 220 away from the impeller body 210 can be closely attached to the cavity wall of the inner cavity 110. When any chamber 111 is opposite to the liquid outlet 131, the liquid in the chamber 111 can be discharged from the liquid outlet 131; when any chamber 111 is opposite to the liquid inlet 121, the liquid in the liquid storage tank can be transported from the liquid inlet 121 to the chamber 111; when the impeller 200 rotates, the liquid temporarily stored in the chamber 111 can move synchronously with the chamber 111.

[0050] When the blades 220 rotate, two adjacent blades 220 and the cavity walls at different positions of the inner cavity 110 form a corresponding chamber 111. The volume change of the chamber 111 as the impeller 200 rotates can be configured by adjusting the contour of the cavity wall of the inner cavity 110 and / or the position of the rotation center of the impeller 200.

[0051] Optionally, the impeller 200 is eccentrically arranged in the inner cavity 110 of the pump body 100, so that when the impeller 200 rotates, the chamber 111 filled with liquid rotates to the position of the liquid outlet 131 and can squeeze the liquid to flow to the liquid outlet 131. When the chamber 111 rotates to the position of the liquid inlet 121, the liquid can be squeezed into the chamber 111, thereby enhancing the suction and pumping effects of the pump body 100.

[0052] When the blade 220 rotates, each chamber 111 will rotate to the position of the liquid inlet 121 in turn. At this time, the chamber 111 is connected to the liquid inlet 121. During the rotation process of the chamber 111 being connected to the liquid inlet 121, the volume of the chamber 111 increases as the rotation proceeds, and the pressure decreases, forming a negative pressure effect, thereby sucking the liquid into the chamber 111. The chamber 111 filled with liquid will continue to move with the rotation of the blade 220. When the chamber 111 filled with liquid rotates to the position of the liquid outlet 131, the chamber 111 is connected to the liquid outlet 131. During the rotation process of the chamber 111 being connected to the liquid outlet 131, the volume of the chamber 111 decreases as the rotation proceeds, and the pressure increases, so as to pump the liquid from the liquid outlet 131 to the nozzle. The continuous rotation of the impeller 200 enables the liquid in the liquid storage tank to be continuously supplied to the nozzle through the pump body 100, thereby performing large-area, large-flow spraying.

[0053] It should be noted that the impeller 200 can be driven to rotate by a motor, and the assembly method of the motor and the transmission connection method between the motor and the impeller 200 are similar to the related art and will not be described in detail here.

[0054] It should also be noted that other structures and related technologies of the impeller 200 and the pump body 100 are similar and will not be described in detail here.

[0055] Please refer to Figure 2 , Figure 3 and Figure 4 The liquid supply device 010 of this embodiment further includes a pump cover 150 and a sealing ring 300. The pump cover 150 is connected to the pump body 100 to cover the opening of the inner cavity 110. The sealing ring 300 is arranged at the top of the pump body 100 and clamped between the pump cover 150 and the pump body 100. In this arrangement, the sealing ring 300 can also be used to achieve sealing between the pump cover 150 and the top of the pump body 100.

[0056] Optionally, the pump cover 150 is detachably connected to the pump body 100, and the connection methods include but are not limited to connection with fasteners such as bolts and threaded connection; the detachable connection between the pump cover 150 and the pump body 100 facilitates the assembly and maintenance of the impeller 200.

[0057] Furthermore, the impeller 200 is fitted with the pump cover 150 , that is, the impeller body 210 and the blades 220 are both fitted with the pump cover 150 , so that each chamber 111 is relatively sealed.

[0058] When the liquid supply device 010 stops supplying liquid, it is usually necessary to ensure that the spraying system does not leak. This requires that the chambers 111 need to maintain a relatively sealed state, that is, the chambers 111 and 111 need not be interconnected. If the chambers 111 are interconnected and not sealed, when the liquid supply device 010 stops supplying liquid, under the action of atmospheric pressure, the liquid in the pump body 100 will still flow from the liquid outlet 131 to the nozzle, causing leakage. Among them, the chamber 111 includes a top surface, a bottom surface and a side surface, the bottom surface is the bottom wall of the pump body 100, the side surface is the side walls of two adjacent blades 220 and the inner wall of the inner cavity 110, and the top surface is the pump cover 150. The top surface, the bottom surface and the side surface all need to be sealed to make the chamber 111 achieve a sealed state. The flexible blades 220 can abut against the inner wall of the inner cavity 110 to form a side seal, the blades 220 abut against the bottom wall of the pump body 100 to form a bottom seal, and the blades 220 abut against the pump cover 150 to form a certain top surface seal. However, the liquid supply device 010 provided by the related art is difficult to form a seal between the pump cover 150 and the top of the cavity wall of the inner cavity 110 of the pump body 100, that is, there is a gap 151 (such as Figure 2 As shown), the chambers 111 are connected through the gap 151, that is, the top surface of the chamber 111 is not completely sealed, and it is difficult to achieve a sealing and watertight effect.

[0059] To improve the above problems, please refer to Figure 3 and Figure 4 , the sealing ring 300 extends along the radial direction of the inner cavity 110 to the top of the cavity wall of the inner cavity 110, so as to form a seal between the pump cover 150 and the top of the cavity wall of the inner cavity 110. In this way, the sealing ring 300 can be used to seal the gap 151 between the pump cover 150 and the top of the cavity wall of the inner cavity 110 to improve the leakage problem, that is, when the liquid supply device 010 stops supplying liquid, the liquid in the pump body 100 can be pressed by the effect of atmospheric pressure, so that the liquid in other chambers 111 that are not connected to the liquid outlet 131 will not flow into the chamber 111 opposite to the liquid outlet 131, thereby improving the leakage problem.

[0060] Furthermore, the sealing ring 300 has a first inner ring wall 301 distributed toward the inner cavity 110, the first inner ring wall 301 is aligned with the cavity wall of the inner cavity 110, and the impeller 200 abuts against the first inner ring wall 301. In this way, the impeller 200 abuts against the cavity wall and the first inner ring wall 301 at the same time, so as to further improve the sealing effect between the chambers 111 and effectively improve the water leakage problem.

[0061] It should be noted that the above-mentioned impeller 200 abuts against the first inner annular wall 301, which means that the end of the blade 220 away from the impeller body 210 abuts against the first inner annular wall 301; the impeller 200 abuts against the cavity wall of the inner cavity 110, which means that the end of the blade 220 away from the impeller body 210 abuts against the cavity wall of the inner cavity 110.

[0062] It should also be noted that, compared with setting an electric control valve at the liquid outlet connector 130, setting a sealing ring 300 to improve the leakage problem and using the electric control valve to control the leakage problem when the liquid supply device 010 stops supplying liquid can effectively reduce costs and simplify the electric control mode of the electric control module of the unmanned equipment.

[0063] Please refer to Figure 4 In this embodiment, the sealing ring 300 includes a first sealing ring 310 and a second sealing ring 320 connected to the first sealing ring 310, and the first sealing ring 310 is distributed inside the second sealing ring 320; the end of the pump body 100 is provided with a mounting groove 140, and the mounting groove 140 has a first groove wall 141 close to the inner cavity 110, and a second groove wall 142 distributed opposite to the first groove wall 141; the second sealing ring 320 is inserted into the mounting groove 140, and the first sealing ring 310 overlaps the end of the first groove wall 141, and the side of the first sealing ring 310 away from the second sealing ring 320 is the first inner ring wall 301. Such a configuration can ensure the ease of operation and stability of the sealing ring 300 assembled on the pump body 100, thereby ensuring the sealing effect.

[0064] Furthermore, the side wall of the second sealing ring 320 is tightly fitted with the groove wall of the installation groove 140 to form an interference fit; in this way, the stability of the sealing ring 300 disposed on the pump body 100 can be further improved, and the sealing effect can be improved.

[0065] Optionally, there is a step portion between the first sealing ring 310 and the second sealing ring 320, the height of the first groove wall 141 is lower than the height of the second groove wall 142, and the first groove wall 141 and the step portion overlap each other; such a configuration can ensure the assembly stability and sealing reliability of the sealing ring 300.

[0066] Optionally, the second sealing ring 320 is provided with a first chamfer, which is used to guide the second sealing ring 320 to be inserted into the installation groove 140, that is, the first chamfer can slide with the groove wall of the installation groove 140 to ensure the ease of assembly of the sealing ring 300 on the pump body 100.

[0067] Furthermore, the end of the side wall of the second sealing ring 320 close to the inner cavity 110 and the end of the side wall of the second sealing ring 320 away from the inner cavity 110 are both provided with a first chamfer.

[0068] Of course, in other embodiments, one of the end of the second sealing ring 320 close to the side wall of the inner cavity 110 and the end of the side wall away from the inner cavity 110 is provided with a first chamfer.

[0069] Optionally, a second chamfer is provided at the end of the first groove wall 141 to guide the second sealing ring 320 to slide into the installation groove 140 .

[0070] In other embodiments, the sealing ring 300 may also be connected to the pump body 100 by bonding or other methods, which is not specifically limited here.

[0071] In order to improve the sealing effect between the pump cover 150 and the pump body 100; please refer to Figure 4 The sealing ring 300 is connected to a sealing rib 330 , and the sealing rib 330 abuts against the pump cover 150 , that is, the sealing ring 300 is connected to a side facing the pump cover 150 with the sealing rib 330 abutting against the pump cover 150 .

[0072] The number of sealing ribs 330 can be selected as needed; in this embodiment, the sealing ring 300 is connected to two sealing ribs 330; specifically, one sealing rib 330 is connected to the first sealing ring 310, and the other sealing rib 330 is connected to the second sealing ring 320, and the two sealing ribs 330 are spaced apart. The provision of two sealing ribs 330 can further improve the sealing effect between the pump cover 150 and the pump body 100.

[0073] In other embodiments, the number of the sealing ribs 330 may be one, three, etc., which is not specifically limited here.

[0074] Furthermore, the sealing rib 330 has a second inner ring wall 331 distributed toward the inner cavity 110, and the first inner ring wall 301 is aligned with the second inner ring wall 331; specifically, the sealing rib 330 connected to the first sealing ring 310 has a second inner ring wall 331 distributed toward the inner cavity 110, and the impeller 200 also abuts against the second inner ring wall 331, that is, the end of the blade 220 away from the impeller body 210 also abuts against the second inner ring wall 331. Such a configuration can further improve the sealing effect and improve the problem of liquid leakage.

[0075] To ensure that the sealing ring 300 does not interfere with the rotation of the impeller 200, please continue to refer to Figure 4 The sealing ring 300 is also provided with a deformation groove 340. When the impeller 200 rotates, the blades 220 abut against the sealing ring 300. Due to the setting of the deformation groove 340, the sealing ring 300 can produce a certain deformation under the abutment of the blades 220, thereby improving the problem that the sealing ring 300 hinders the impeller 200 from rotating.

[0076] Furthermore, the deformation groove 340 is disposed on a side of the sealing ring 300 facing the pump cover 150 .

[0077] The number of deformation grooves 340 can be set as needed; in this embodiment, the sealing ring 300 is provided with two deformation grooves 340, one of which is located between the two sealing ribs 330, and the other deformation groove 340 is located on the side connected to the second sealing ring 320 away from the first sealing ring 310. The reliability of the deformation of the sealing ring 300 is ensured by providing a plurality of deformation grooves 340, so as to effectively improve the problem that the setting of the sealing ring 300 hinders the rotation of the impeller 200, and ensure the reliability of pumping the liquid to the nozzle through the liquid supply device 010.

[0078] Of course, in other embodiments, the number of the deformation grooves 340 may be one, three, etc., which is not specifically limited here.

[0079] In other embodiments, the sealing ring 300 is further provided with a deformation cavity. Specifically, the deformation cavity may be provided inside at least one of the first sealing ring 310 and the second sealing ring 320 .

[0080] Optionally, the second sealing ring 320 is not connected to the sealing rib 330 and the position where the deformation groove 340 is not set is in contact with the pump cover 150; such a setting can further improve the sealing effect and improve the problem of liquid leakage between the pump cover 150 and the pump body 100.

[0081] In order to prevent the sealing ring 300 from rotating with the impeller 200 under the action of the impeller 200; please refer to Figure 3 and Figure 5 In this embodiment, the sealing ring 300 is also connected to the limiting protrusion 350 , and the pump body 100 is provided with a limiting groove 143 . The limiting protrusion 350 is plugged into the limiting groove 143 to prevent the sealing ring 300 from rotating relative to the pump body 100 .

[0082] Furthermore, the limiting protrusion 350 is connected to the side of the second sealing ring 320 away from the first sealing ring 310, and the limiting groove 143 is provided on the second groove wall 142 and communicates with the mounting groove 140. Such a configuration can avoid adverse effects on the sealing effect of the sealing ring 300.

[0083] Of course, in other embodiments, the sealing ring 300 is provided with a limiting groove 143 , the pump body 100 is connected to the limiting protrusion 350 , and the limiting protrusion 350 is plugged into the limiting groove 143 to prevent the sealing ring 300 from rotating relative to the pump body 100 .

[0084] Alternatively, in other embodiments, the sealing ring 300 may also be engaged with the pump body 100 to prevent the sealing ring 300 from rotating relative to the pump body 100 along with the impeller 200 .

[0085] The unmanned equipment of this embodiment can utilize the spraying system to spray liquid materials such as water and liquid pesticides. During the spraying process, the liquid in the liquid storage tank is pumped into the pump body 100 by the rotation of the impeller 200, and the liquid entering the pump body 100 is pumped from the liquid outlet 131 to the nozzle through the impeller 200, so that the nozzle can be used to spray the liquid.

[0086] In summary, the liquid supply device 010 of the utility model can be used in spraying systems and unmanned equipment, and the liquid supply device 010 can seal the gap 151 between the pump cover 150 and the top of the cavity wall of the inner cavity 110 of the pump body 100 to improve the problem of liquid leakage.

[0087] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid supply device, characterized in that: include: A pump body (100), wherein the pump body (100) is provided with an inner cavity (110) and a liquid outlet (131) and a liquid inlet (121) communicated with the inner cavity (110); a flexible impeller (200), the impeller (200) being rotatably disposed in the inner cavity (110), and when the impeller (200) rotates, the liquid can be pumped in from the liquid inlet (121) and the liquid can be pumped out from the liquid outlet (131); a pump cover (150), the pump cover (150) being connected to the pump body (100) so as to cover the opening of the inner cavity (110); and A sealing ring (300), wherein the sealing ring (300) is arranged at the top of the pump body (100) and clamped between the pump cover (150) and the pump body (100); wherein the sealing ring (300) extends along the radial direction of the inner cavity (110) to the top of the cavity wall of the inner cavity (110), so as to form a seal between the pump cover (150) and the top of the cavity wall of the inner cavity (110).

2. The liquid supply device according to claim 1, characterized in that: The sealing ring (300) has a first inner annular wall (301) distributed toward the inner cavity (110). The first inner annular wall (301) is aligned with the cavity wall of the inner cavity (110), and the impeller (200) abuts against the first inner annular wall (301).

3. The liquid supply device according to claim 2, characterized in that: The sealing ring (300) comprises a first sealing ring (310) and a second sealing ring (320) connected to the first sealing ring (310), wherein the first sealing ring (310) is arranged on the inner side of the second sealing ring (320); a mounting groove (140) is arranged at the end of the pump body (100), wherein the mounting groove (140) has a first groove wall (141) close to the inner cavity (110), and a second groove wall (142) arranged opposite to the first groove wall (141); the second sealing ring (320) is inserted into the mounting groove (140), the first sealing ring (310) is overlapped on the end of the first groove wall (141), and the side of the first sealing ring (310) away from the second sealing ring (320) is the first inner ring wall (301).

4. The liquid supply device according to claim 2, characterized in that: The sealing ring (300) is connected to a sealing rib (330), and the sealing rib (330) abuts against the pump cover (150).

5. The liquid supply device according to claim 4, characterized in that: The sealing rib (330) has a second inner annular wall (331) distributed toward the inner cavity (110), and the first inner annular wall (301) is aligned with the second inner annular wall (331).

6. The liquid supply device according to claim 1, characterized in that: The sealing ring (300) is also provided with a deformation groove (340) or a deformation cavity.

7. The liquid supply device according to claim 6, characterized in that: The deformation groove (340) is provided on a side of the sealing ring (300) facing the pump cover (150).

8. The liquid supply device according to claim 1, characterized in that: One of the pump body (100) and the sealing ring (300) is provided with a limiting groove (143), and the other of the pump body (100) and the sealing ring (300) is provided with a limiting protrusion (350), and the limiting protrusion (350) is plugged into the limiting groove (143) to prevent the sealing ring (300) from rotating relative to the pump body (100).

9. The liquid supply device according to claim 1, characterized in that: The liquid inlet (121) is used to be connected to a liquid storage tank of the unmanned equipment; and the liquid outlet (131) is used to be connected to a nozzle of the unmanned equipment.

10. A spraying system, characterized in that: include: A liquid storage tank for storing liquid; A spray head for spraying liquid; as well as, In the liquid supply device according to any one of claims 1 to 9, the liquid inlet (121) is connected to the liquid storage tank, and the liquid outlet (131) is connected to the nozzle.

11. An unmanned device, characterized in that: It comprises an unmanned equipment body and a liquid supply device as described in any one of claims 1 to 9 or a spraying system as described in claim 10, which is arranged on the unmanned equipment body.

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