Liquid medicine box main cover, liquid medicine box and plant protection equipment

Abstract

The utility model discloses a liquid medicine box mother cover, a liquid medicine box and plant protection equipment, and the liquid medicine box mother cover comprises a mother cover which is used for being installed on a box body so as to cover a mother filling port in the box body; a secondary filling port is formed in the middle of the primary cover; the secondary cover is detachably mounted on the primary cover and is used for covering the secondary filling port; and the sub-cover is provided with a ventilation gap for ventilation. According to the technical scheme, the ventilation gap used for ventilation is formed in the sub-cover, the requirement for keeping the box body communicated with the atmosphere is met, and due to the fact that the width of the ventilation gap is small, the problem that oscillated liquid medicine in the box body overflows can be effectively solved. Compared with an existing scheme that a ventilation hole is formed in a mother cover and an anti-overflow labyrinth device is additionally arranged on the inner side of the mother cover, the scheme has the advantages that the ventilation gap is directly formed in the son cover, the structure is simpler, the number of used parts is smaller, and the cost is lower.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural equipment, and in particular, to a mother and son cover for a liquid medicine box, a liquid medicine box, and a plant protection equipment. Background Art

[0002] With the development of agricultural technology, drones, unmanned vehicles, etc. play an increasingly important role in agricultural plant protection work. For example, a medicine box capable of storing liquid medicine is carried on a drone, and at the same time, an atomization system is equipped. The atomization system extracts the liquid medicine in the medicine box and atomizes and sprays it out to achieve the function of unmanned autonomous plant protection. Usually, the lid used for the medicine box loaded on the medicine box is a mother and son cover. When there is a medicine adding gun, only the son cover can be opened for adding medicine; when there is no medicine adding gun, the mother cover can be opened to provide a larger medicine adding port, facilitating the user to pour the liquid medicine into the medicine box. In order to ensure the smooth pumping of the liquid medicine, ventilation holes are usually provided on the mother cover, so that the inside of the medicine box can communicate with the atmosphere. At the same time, due to the large bumps and vibrations during the operation of drones and unmanned vehicles, in order to prevent the liquid medicine from overflowing from the ventilation holes, an anti-overflow maze device needs to be additionally installed inside the mother cover. As a result, the existing mother and son covers on the medicine box have defects such as many components, complex structure, and high cost. Summary of the Utility Model

[0003] The purpose of the embodiments of the present utility model is to provide a mother and son cover for a liquid medicine box, a liquid medicine box, and a plant protection equipment, which can solve the above problems existing in the prior art.

[0004] To achieve the above object, the present application adopts the following technical solutions:

[0005] On the one hand, a mother and son cover for a liquid medicine box is provided, including:

[0006] A mother cover for installing on a box body to cover the mother filling port on the box body; a son filling port is provided in the middle of the mother cover;

[0007] A son cover detachably installed on the mother cover for covering the son filling port; the son cover is provided with a ventilation gap for ventilation.

[0008] Optionally, the son cover is provided with an anti-overflow nozzle extending towards the inside of the box body, and the ventilation gap is provided in the anti-overflow nozzle.

[0009] Optionally, the anti-overflow nozzle is in the shape of a duck bill, a duck bill groove is provided on the anti-overflow nozzle, and the ventilation gap is provided at the bottom of the duck bill groove.

[0010] Optionally, the sub-cover includes a sub-cover body, a flexible connecting arm, and an anti-falling connecting member. The two ends of the flexible connecting arm are respectively connected to the sub-cover body and the anti-falling connecting member, and the ventilation gap is provided on the sub-cover body; the anti-falling connecting member is fixedly connected to the mother cover, and the sub-cover body covers the sub-filling port.

[0011] Optionally, the mother cover is provided with an annular surrounding wall surrounding the circumference of the sub-filling port. The anti-falling connecting member has an annular structure corresponding to the outer shape of the annular surrounding wall, and the anti-falling connecting member is sleeved on the annular surrounding wall; the sub-cover body is disposed on the end surface of the annular surrounding wall.

[0012] Optionally, a shoulder is convexly provided on the outer circumference of the annular surrounding wall, and the anti-falling connecting member is restricted from detaching from the annular surrounding wall by the shoulder.

[0013] Optionally, the sub-cover body is provided with an annular groove corresponding to the shape of the annular surrounding wall. By the engagement of the annular surrounding wall and the annular groove, the sub-cover body is kept covering the sub-filling port.

[0014] Optionally, an opening handle is provided on the sub-cover body.

[0015] Optionally, an anti-overflow cylinder extending towards the inside of the box body is provided on the inner side of the mother cover, and the anti-overflow cylinder is disposed around the circumference of the sub-filling port.

[0016] On the other hand, a liquid medicine tank is provided, which includes a box body and the above-mentioned liquid medicine tank with a mother and sub-cover. A mother filling port is provided on the box body, and the liquid medicine tank with a mother and sub-cover is detachably installed on the box body to cover the mother filling port.

[0017] On yet another aspect, a plant protection device is provided, which includes a vehicle, a spraying system, and the above-mentioned liquid medicine tank. The liquid medicine tank and the spraying system are mounted on the vehicle, and the spraying system is connected to the liquid medicine tank, and the liquid medicine in the liquid medicine tank is atomized and sprayed through the spraying system.

[0018] The beneficial effects of the present application are as follows: The present utility model provides a liquid medicine tank with a mother and sub-cover, which can be installed on the box body to cover the mother filling port; a ventilation gap capable of being used for ventilation is provided on the sub-cover to meet the requirement of keeping the box body in communication with the atmosphere. Moreover, since the width of the ventilation gap is small, the problem of the oscillating liquid medicine in the box body overflowing can be effectively avoided. Compared with the existing solutions of opening a ventilation hole on the mother cover and installing an anti-overflow maze device on the inner side of the mother cover, this solution directly opens a ventilation gap on the sub-cover, with a simpler structure, fewer parts used, and lower cost. Description of the Drawings

[0019] The following further elaborates on the present application in detail according to the drawings and embodiments.

[0020] Figure 1 Structural schematic diagram of the mother - child cover of the liquid medicine box in the embodiment of the present application;

[0021] Figure 2 One of the exploded views of the mother - child cover of the liquid medicine box in the embodiment of the present application;

[0022] Figure 3 Another exploded view of the mother - child cover of the liquid medicine box in the embodiment of the present application;

[0023] Figure 4 Cross - sectional view of the mother - child cover of the liquid medicine box in the embodiment of the present application;

[0024] Figure 5 is Figure 4 Enlarged view of area A in

[0025] In the figure:

[0026] 1. Mother cover; 11. Sub - filling port; 12. Annular enclosure wall; 13. Shoulder; 14. Anti - overflow cylinder; 2. Sub - cover; 21. Sub - cover body; 211. Ventilation gap; 212. Anti - overflow nozzle; 213. Duckbill groove; 214. Opening handle; 22. Flexible connecting arm; 23. Anti - dropping connecting piece. Detailed implementation manners

[0027] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present application clearer, the technical solutions of the embodiments of the present application are further described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0028] In the description of the present application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0030] With the development of agricultural technology, drones, unmanned vehicles, etc. are playing an increasingly important role in agricultural plant protection work. For example, a medicine box capable of storing liquid medicine is carried on a drone, and at the same time, an atomization system is equipped. The atomization system extracts the liquid medicine in the medicine box and atomizes and sprays it out to achieve the function of unmanned autonomous plant protection. Usually, the lid used for the medicine box loaded on the medicine box is a mother-daughter lid. When there is a medicine adding gun, only the daughter lid can be opened for adding medicine; when there is no medicine adding gun, the mother lid can be opened to provide a larger-sized medicine adding port to facilitate the user to pour the liquid medicine into the medicine box. In order to ensure the smooth pumping out of the liquid medicine, usually, a ventilation hole is provided on the mother lid, so that the inside of the medicine box can communicate with the atmosphere. At the same time, since the bumps and vibrations are relatively large during the operation of the drone and the unmanned vehicle, in order to prevent the liquid medicine from overflowing from the ventilation hole, a maze device capable of preventing overflow needs to be additionally installed on the inner side of the mother lid. Thus, there are defects such as many components, complex structure, and high cost in the existing mother-daughter lid on the medicine box.

[0031] In order to overcome the above technical problems, referring to Figures 1-5 , this embodiment provides a mother-daughter lid for a liquid medicine box, including a mother lid 1 and a daughter lid 2. The mother lid 1 is used to be installed on a box body to cover the mother filling port on the box body; a daughter filling port 11 is provided in the middle of the mother lid 1; the daughter lid 2 is detachably installed on the mother lid 1 to cover the daughter filling port 11; the daughter lid 2 is provided with a ventilation gap 211 for ventilation.

[0032] The mother-daughter lid for a liquid medicine box provided in this embodiment can be installed on a box body to cover the mother filling port; a ventilation gap 211 for ventilation is provided on the daughter lid 2 to meet the requirement of keeping the box body in communication with the atmosphere. Moreover, since the width of the ventilation gap 211 is small, the problem of the oscillating liquid medicine in the box overflowing can be effectively avoided. Compared with the existing solution of opening a ventilation hole on the mother lid 1 and installing an anti-overflow maze device on the inner side of the mother lid 1, this solution directly opens a ventilation gap 211 on the daughter lid 2, which has a simpler structure, fewer components used, and lower cost.

[0033] Preferably, the width of the air-permeable gap 211 provided on the sub-cover 2 does not exceed 1 mm. Controlling the width of the air-permeable gap 211 within 1 mm can achieve a relatively effective anti-overflow effect.

[0034] Preferably, the material of the sub-cover 2 is flexible rubber-like material, such as rubber, silica gel or flexible plastic, etc. At this time, the air-permeable gap 211 on the sub-cover 2 can be controlled to be close to 0, and only a slit needs to be provided on the sub-cover 2 as the air-permeable gap 211. At this time, the air-permeable gap 211 is small enough to provide a better anti-overflow effect. Moreover, since the sub-cover 2 is made of flexible material, when the liquid medicine in the box body is pumped out, resulting in a lower air pressure in the box body, under the action of the internal and external pressure difference, the atmospheric air will push open the air-permeable gap 211 on the flexible sub-cover 2 and enter the box body, which also meets the requirement of balancing the internal and external air pressures.

[0035] In one embodiment, the sub-cover 2 is provided with an anti-overflow nozzle 212 extending towards the inside of the box body, and the air-permeable gap 211 is arranged in the anti-overflow nozzle 212.

[0036] When the sub-cover 2 is provided with an anti-overflow nozzle 212 extending towards the inside of the box body and the air-permeable gap 211 is arranged in the anti-overflow nozzle 212, it is equivalent to effectively increasing the depth of the air-permeable gap 211. The advantage of this setting is that it can further enhance the anti-overflow effect. Specifically, the material thickness at the anti-overflow nozzle 212 is effectively increased. The air-permeable gap 211 is arranged in the anti-overflow nozzle 212, which is equivalent to effectively deepening the depth of the air-permeable gap 211. When the liquid medicine in the box body undergoes relatively intense oscillation, even if the liquid medicine penetrates into the air-permeable gap 211, it is difficult to overflow to the surface of the sub-cover 2 through the air-permeable gap 211 with a large depth. Therefore, the setting of the anti-overflow nozzle 212 is equivalent to increasing the path length of the liquid overflowing through the air-permeable gap 211, that is, increasing the difficulty of liquid overflow, so as to achieve the effect of strengthening anti-overflow.

[0037] Preferably, the anti-overflow nozzle 212 is a structure integrally formed on the sub-cover 2.

[0038] In one embodiment, referring to Figure 5 , the anti-overflow nozzle 212 is in the shape of a duck bill, and a duck bill groove 213 is arranged on the anti-overflow nozzle 212, and the air-permeable gap 211 is arranged at the bottom of the duck bill groove 213.

[0039] The anti-overflow nozzle 212 is set in the shape of a duckbill, and a duckbill groove 213 corresponding to its outer shape is provided on the anti-overflow nozzle 212. The air-permeable gap 211 is provided at the bottom of the duckbill groove 213. The duckbill groove 213 has excellent flow-guiding characteristics, which can enable the atmospheric air to enter the box body more smoothly through the duckbill groove 213 and the air-permeable gap 211. At this time, even if the width of the air-permeable gap 211 is 0, under the action of the internal and external pressure difference, the atmospheric air can easily enter the box body. Moreover, the duckbill-shaped anti-overflow nozzle 212 is similar to the existing duckbill valve and has a certain anti-backflow effect, that is, it is more difficult for the liquid in the box body to overflow through the air-permeable gap 211 of the anti-overflow nozzle 212, so the anti-overflow effect is better.

[0040] In one embodiment, in combination with Figure 1 and Figure 2 , the sub-cover 2 includes a sub-cover main body 21, a flexible connecting arm 22 and an anti-dropping connecting member 23. The two ends of the flexible connecting arm 22 are respectively connected to the sub-cover main body 21 and the anti-dropping connecting member 23. The air-permeable gap 211 is provided on the sub-cover main body 21; the anti-dropping connecting member 23 is fixedly connected to the mother cover 1, and the sub-cover main body 21 covers the sub-filling port 11.

[0041] The anti-dropping connecting member 23 is fixedly connected to the mother cover 1, and the sub-cover main body 21 is connected to the anti-dropping connecting member 23 through the flexible connecting arm 22. During the process of the user opening the sub-cover 2 to fill the liquid medicine, the opened sub-cover main body 21 will be suspended on the mother cover 1 through the flexible connecting arm 22. Therefore, there is no need to worry about the problem that the opened sub-cover 2 falls to the ground and gets dirty, and at the same time, the loss of the sub-cover 2 can be effectively prevented.

[0042] In one embodiment, the mother cover 1 is provided with an annular surrounding wall 12 surrounding the periphery of the sub-filling port 11. The anti-dropping connecting member 23 is in a ring-shaped structure corresponding to the outer shape of the annular surrounding wall 12, and the anti-dropping connecting member 23 is sleeved on the annular surrounding wall 12; the sub-cover main body 21 is covered on the end surface of the annular surrounding wall 12.

[0043] The annular surrounding wall 12 is provided on the mother cover 1, surrounding and enclosing the periphery of the sub-filling port 11. It can provide a stable support structure for installing and fixing the anti-dropping connecting member 23, and at the same time serve as the contact body when the sub-cover main body 21 is covered, which helps to enhance the reliability of the connection between the sub-cover main body 21 and the mother cover 1 and strengthen the sealing performance.

[0044] In one embodiment, a shoulder 13 is convexly provided on the outer periphery of the annular surrounding wall 12, and the anti-dropping connecting member 23 is restricted from detaching from the annular surrounding wall 12 through the shoulder 13.

[0045] The shoulder 13, as a raised structure on the annular enclosure wall 12, its main function is to restrict the movement of the anti-falling connecting member 23 in the axial direction. When the anti-falling connecting member 23 is sleeved on the annular enclosure wall 12, the shoulder 13 will block one end of the anti-falling connecting member 23 to prevent it from accidentally falling off the annular enclosure wall 12.

[0046] Preferably, the anti-falling connecting member 23 is made of a flexible material. During installation, the anti-falling connecting member 23 can be expanded and deformed so that it can be sleeved below the shoulder 13.

[0047] In one embodiment, the sub-cover body 21 is provided with an annular groove corresponding to the shape of the annular enclosure wall 12. Through the engagement of the annular enclosure wall 12 and the annular groove, the sub-cover body 21 is kept covering the sub-filling port 11.

[0048] The setting of the annular groove enables the sub-cover body 21 to achieve precise alignment with the annular enclosure wall 12 during the covering process. This alignment not only helps to improve the sealing performance between the sub-cover body 21 and the mother cover 1, but also ensures that the sub-cover body 21 maintains a stable position after being covered. When the annular enclosure wall 12 is inserted into the annular groove, the mutual force between the two will enhance the connection stability between the sub-cover body 21 and the mother cover 1. This stability not only helps to prevent the sub-cover body 21 from accidentally falling off during liquid medicine oscillation or when the box body is tilted, but also reduces loosening and wear caused by long-term use. The design of the annular groove makes it easier and more convenient for users to cover the sub-cover body 21. Users only need to align the sub-cover body 21 with the annular enclosure wall 12 and gently press down to achieve a stable covering.

[0049] Preferably, convex ribs are provided on the outer wall of the annular enclosure wall 12. After the sub-cover body 21 is buckled onto the annular enclosure wall 12, the convex ribs are snapped into the annular enclosure wall 12. The structure of the convex ribs can be used to strengthen the buckling strength between the sub-cover body 21 and the annular enclosure wall 12 and improve the reliability of the covering of the sub-cover body 21. The sub-cover body 21 is preferably made of a flexible material. The flexible sub-cover body 21 is easier to buckle, and due to its better stretching performance, the tightness after buckling is better.

[0050] In one embodiment, an opening handle 214 is provided on the sub-cover body 21.

[0051] The provision of the opening handle 214 on the sub-cover body 21 facilitates the user to hold the opening handle 214 with their hand to pull the sub-cover body 21 away from the mother cover 1 when opening the cover, improving the convenience and comfort of the opening operation.

[0052] In one embodiment, referring to Figure 3 and Figure 4 , an anti-overflow cylinder 14 extending towards the inside of the box body is provided on the inner side of the mother cover 1, and the anti-overflow cylinder 14 is arranged around the circumference of the sub-filling port 11.

[0053] An anti-overflow cylinder 14 extending inward is provided on the inner side of the mother cover 1. Only the oscillating liquid medicine can contact the son cover 2 and overflow through the channel in the anti-overflow cylinder 14. The setting of the anti-overflow cylinder 14 can just effectively destroy the oscillating effect of the liquid medicine, greatly reduce the oscillating amplitude of the liquid medicine entering the anti-overflow cylinder 14, and further increase the difficulty for the oscillating liquid medicine to contact the son cover 2. Therefore, the setting of the anti-overflow cylinder 14 can play the effect of further strengthening the anti-overflow function.

[0054] On the other hand, the present embodiment also provides a liquid medicine tank, including a box body and the above-mentioned mother-son cover of the liquid medicine tank. A mother filling port is provided on the box body, and the mother-son cover of the liquid medicine tank is detachably installed on the box body to cover the mother filling port.

[0055] Based on the mother-son cover of the liquid medicine tank of the present embodiment, the structure of the liquid medicine tank of the present embodiment is simpler, the number of components is less, and the cost is lower.

[0056] On yet another aspect, the present embodiment provides a plant protection device, including a vehicle, a spraying system and the above-mentioned liquid medicine tank. The liquid medicine tank and the spraying system are mounted on the vehicle, and the spraying system is connected to the liquid medicine tank to atomize and spray the liquid medicine in the liquid medicine tank through the spraying system.

[0057] Among them, the vehicle can be, but is not limited to, devices such as driverless vehicles and drones that can move autonomously in the field. The liquid medicine tank is installed on the vehicle, and the spraying system can be installed on the liquid medicine tank or directly installed on the vehicle. The spraying system includes components such as a spray disc and a liquid medicine pump. When working, the vehicle moves autonomously, the liquid medicine pump continuously pumps out the liquid medicine in the liquid medicine tank, and after being atomized by the spray disc, it is sprayed onto the crops.

[0058] Similarly, by using the liquid medicine tank of the present embodiment, the plant protection device of the present embodiment has the advantages of simple structure, few components and low cost.

[0059] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating orientation or positional relationship are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0060] In the description of this specification, the description referring to terms such as "one embodiment" and "example" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0061] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0062] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A mother and child cover for a liquid medicine box, characterized in that, Comprising: A mother cover (1) for being installed on a box body to cover a mother filling port on the box body; a child filling port (11) is arranged in the middle of the mother cover (1); A child cover (2) detachably installed on the mother cover (1) for covering the child filling port (11); the child cover (2) is provided with a breathable gap (211) for ventilation.

2. The mother and child covers of the liquid medicine box according to claim 1, wherein, The child cover (2) is provided with an anti-overflow nozzle (212) extending towards the inside of the box body, and the breathable gap (211) is arranged in the anti-overflow nozzle (212).

3. The mother and daughter covers of the liquid medicine box according to claim 2, characterized in that, The anti-overflow nozzle (212) is in the shape of a duckbill, a duckbill groove (213) is arranged on the anti-overflow nozzle (212), and the breathable gap (211) is arranged at the bottom of the duckbill groove (213).

4. The mother and child covers of the liquid medicine box according to claim 1, characterized in that, The child cover (2) includes a child cover main body (21), a flexible connecting arm (22) and an anti-falling connecting piece (23). Two ends of the flexible connecting arm (22) are respectively connected to the child cover main body (21) and the anti-falling connecting piece (23), and the breathable gap (211) is arranged on the child cover main body (21); the anti-falling connecting piece (23) is fixedly connected to the mother cover (1), and the child cover main body (21) covers the child filling port (11).

5. The mother and daughter covers of the liquid medicine box according to claim 4, characterized in that, The mother cover (1) is provided with an annular surrounding wall (12) surrounding the periphery of the child filling port (11). The anti-falling connecting piece (23) is in a ring-shaped structure corresponding to the outer shape of the annular surrounding wall (12), and the anti-falling connecting piece (23) is sleeved on the annular surrounding wall (12); the child cover main body (21) is covered on the end face of the annular surrounding wall (12).

6. The mother and child covers of the liquid medicine box according to claim 5, characterized in that, A shoulder (13) is convexly provided on the outer periphery of the annular surrounding wall (12) to limit the anti-falling connecting piece (23) from detaching from the annular surrounding wall (12).

7. The mother and daughter covers of the liquid medicine box according to claim 5, characterized in that, The child cover main body (21) is provided with an annular groove corresponding to the shape of the annular surrounding wall (12). By the buckling of the annular surrounding wall (12) and the annular groove, the child cover main body (21) is kept covering the child filling port (11).

8. The mother and child covers of the liquid medicine box according to claim 7, characterized in that, An opening handle (214) is arranged on the child cover main body (21).

9. The mother and daughter caps of the liquid medicine box according to claim 1, wherein An anti-overflow cylinder (14) extending towards the inside of the box body is arranged on the inner side of the mother cover (1), and the anti-overflow cylinder (14) is arranged around the periphery of the child filling port (11).

10. A liquid medicine tank, characterized in that, Comprising a box body and the mother-child cover of the liquid medicine box according to any one of claims 1-9. A mother filling port is arranged on the box body, and the mother-child cover of the liquid medicine box is detachably installed on the box body to cover the mother filling port.

11. A plant protection device, characterized in that, Comprising a vehicle, a spraying device and the liquid medicine box according to claim 10. The liquid medicine box and the spraying device are carried on the vehicle, and the spraying device is connected to the liquid medicine box to atomize and spray the liquid medicine in the liquid medicine box through the spraying device.

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