CN112705373A

CN112705373A - Sprayer with a spray tube

Info

Publication number: CN112705373A
Application number: CN201911024055.5A
Authority: CN
Inventors: 乔勇; 王其彬; 高昌印
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2021-04-27

Abstract

The invention provides a sprayer, which comprises a liquid storage tank for containing liquid, wherein the liquid storage tank is provided with an opening end; the host comprises a host shell and a motor accommodated in the host shell; an air pump driven by the motor to pressurize the liquid in the liquid storage tank; the number of the liquid storage tanks is at least two, and the liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank; the specification of the opening end of the first liquid storage tank is different from that of the opening end of the second liquid storage tank, and the opening end of the first liquid storage tank and the opening end of the second liquid storage tank are respectively attached with a first switching cover body and a second switching cover body with corresponding specifications; the first liquid storage tank and the second liquid storage tank can be detachably connected with the host shell through the first switching cover body and the second switching cover body respectively. The sprayer provided by the embodiment of the invention can solve the problem of liquid cross contamination.

Description

Sprayer with a spray tube

Technical Field

The invention relates to the technical field of liquid spraying equipment, in particular to a sprayer.

Background

Sprayers are commonly used to apply liquids such as, but not limited to, insecticides, herbicides, fungicides, insecticides, fertilizer solutions, nutrient solutions, and the like, to a target area for ground maintenance, to support crop growth, pest control, and the like.

As a known example, an air-pump sprayer may comprise a main unit and a single liquid reservoir for containing a liquid, which is detachable from the main unit. Be equipped with the air pump that is used for producing high-pressure gas in the host computer, the air pump passes through the air current pipeline and exports to the liquid storage tank in, and it produces high-pressure gas and pressurizes the liquid in the liquid storage tank, and then flows to the spray lance at the blowout through the export of liquid storage tank.

However, the air pump type sprayer adopts the design of a single liquid storage tank, so that when the sprayer sprays different liquids, the problem of liquid cross contamination is easily caused. To avoid this problem, the user must clean the reservoir after completing the spraying of one liquid for later use. The cleaning process is time consuming and inconvenient.

As a known example, a non-pneumatic pump sprayer may include a reservoir for containing a liquid and a pressurizing unit (e.g., a screw pump, a plunger pump, a diaphragm pump, or the like) in communication with the reservoir via a pump line. When the automatic pressurizing device works, the pressurizing unit is started, liquid in the liquid storage tank is sucked through the pump pipeline to pressurize the liquid, and the pressurized liquid is sprayed out through the nozzle.

It follows that a non-pneumatic pump sprayer, which uses a pressurizing unit to pressurize a liquid, will cause the liquid to contact the pressurizing unit and the pump delivery line. Therefore, when the sprayer sprays different liquids, the problem of liquid cross contamination exists in the liquid storage tank, and the problem also exists in the pressurizing unit and the pump pipeline. Therefore, the liquid storage tank, the pressurizing unit and the pump pipeline need to be cleaned subsequently. And compared with the cleaning of the liquid storage tank, the cleaning of the pressurizing unit and the pump pipeline is more difficult and time-consuming.

Disclosure of Invention

Based on the defects of the prior art, the invention provides a sprayer which can at least solve the problem of liquid cross contamination existing in a liquid storage tank and further solve the problem of liquid cross contamination existing in a pressurizing unit and a pump pipeline.

In order to achieve the above object, the present invention provides the following technical solutions.

An embodiment of the present invention provides a sprayer including: the liquid storage tank is used for containing liquid and is provided with an opening end; the host comprises a host shell and a motor accommodated in the host shell; an air pump driven by the motor to pressurize the liquid in the liquid storage tank; the number of the liquid storage tanks is at least two, and the liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank; the specification of the opening end of the first liquid storage tank is different from that of the opening end of the second liquid storage tank, and the opening end of the first liquid storage tank and the opening end of the second liquid storage tank are respectively attached with a first switching cover body and a second switching cover body with corresponding specifications; the first liquid storage tank and the second liquid storage tank can be detachably connected with the host shell through the first switching cover body and the second switching cover body respectively.

In the sprayer of the embodiment, the first liquid storage tank and the second liquid storage tank are arranged, the opening ends of the first liquid storage tank and the second liquid storage tank are attached with the first switching cover body and the second switching cover body with corresponding specifications, and the main machine shell can be detachably connected with the corresponding liquid storage tanks through the corresponding switching cover bodies. Therefore, the selective matching of the host machine and the first liquid storage tank and the second liquid storage tank is realized, and the problem of liquid cross contamination caused by arranging a single liquid storage tank can be solved.

Another embodiment of the present invention provides a sprayer comprising: the liquid storage tank is used for containing liquid and is connected with a spray rod; the host comprises a host shell and a motor accommodated in the host shell; an air pump driven by the motor to pressurize the liquid in the liquid storage tank; the number of the liquid storage tanks is at least two, and the main machine shell can be selectively connected with one of the liquid storage tanks; the liquid contained in the liquid storage tank is not communicated with the air pump fluid, and the pressurized liquid can enter the spray rod from the liquid storage tank and is sprayed out from the spray rod.

The sprayer of this embodiment adopts the mode that the air pump inputed gas to the liquid storage pot to pressurize the liquid of holding in the liquid storage pot, and the liquid of holding in the liquid storage pot flows out the liquid storage pot through the spray lance under the pressure effect of gas. Compared with the prior art that the pressurizing units such as a screw pump, a plunger pump or a diaphragm pump are adopted to pressurize liquid to cause liquid contact and adhesion between the pressurizing units and the pump pipeline, in the working process of the sprayer provided by the embodiment of the invention, the liquid is not in contact with the air pump and the inner flow channel of the connecting piece, so that the problem of cross contamination caused by contact and adhesion between the liquid and the air pump and the inner flow channel of the connecting piece is solved. Furthermore, after the sprayer of the embodiment of the invention finishes the liquid spraying operation, the air pump and the internal flow passage of the connecting piece do not need to be cleaned, so that the time and the cost of the cleaning operation are reduced.

Another embodiment of the present invention provides a sprayer including: the liquid storage tank is used for containing liquid and is provided with an opening end; the host comprises a host shell and a motor accommodated in the host shell; a pressurizing unit driven by the motor to pressurize the liquid in the liquid storage tank; the number of the liquid storage tanks is at least two, and the liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank; the first liquid storage tank can enter the inner cavity of the second liquid storage tank through the open end of the second liquid storage tank.

In the sprayer of this embodiment, the first reservoir may be received in the second reservoir. Therefore, the space occupied by the first liquid storage tank and the space occupied by the second liquid storage tank are reduced to the space occupied by the second liquid storage tank. Therefore, the first liquid storage tank and the second liquid storage tank can realize the integration and the miniaturization of the structure, reduce the package and the storage size, and are favorable for the reduction of the transportation cost and the reduction of the storage space.

Another embodiment of the present invention provides a sprayer including: the liquid storage tank is used for containing liquid and is provided with an opening end; the host comprises a host shell and a motor accommodated in the host shell; a pressurizing unit driven by the motor to pressurize the liquid in the liquid storage tank; the host machine can enter the inner cavity of the liquid storage tank through the opening end.

In the sprayer of the embodiment, the main machine can also be contained in the liquid storage tank, so that the volume of the sprayer can be further reduced.

Drawings

FIG. 1 is a schematic view of the assembly of a sprayer according to a non-limiting embodiment of the invention;

FIG. 2 is a schematic exploded view of the sprayer of FIG. 1;

FIG. 3 is a schematic view of the first reservoir and the first adapter cover in an assembled state;

FIG. 4 is a schematic view of the second reservoir and the second adapter cover in an assembled state;

FIG. 5 is a schematic structural view of the first reservoir and the first adaptor cover in a disassembled state;

FIG. 6 is a schematic structural view of the second liquid storage tank and the second adapter cover in a disassembled state;

FIG. 7 is a schematic view of the assembled state of the host and the first reservoir;

FIG. 8 is a schematic view of the assembled state of the host and the second reservoir;

FIG. 9 is a schematic structural view of the first reservoir, the second reservoir and the host in a disassembled state;

FIG. 10 is a schematic view of the host being received in the first tank;

FIG. 11 is a schematic view of a configuration in which a host is received in a first reservoir, the first reservoir is received in a second reservoir, and the first reservoir and the second reservoir are respectively coupled to a first coupling cover and a second coupling cover;

FIG. 12 is a schematic structural view illustrating the first liquid storage tank being received in the second liquid storage tank and the first and second adaptor covers being detached from the open ends of the first and second liquid storage tanks, respectively;

FIGS. 13-15 are schematic views of the first fluid reservoir entering the open end of the second fluid reservoir in a first receiving direction;

FIG. 16 is a schematic view of the first reservoir being received in the second reservoir in a horizontal or lying position.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 16, an embodiment of the present invention provides a sprayer 100, which includes a main unit 3, a pressurizing unit, and a liquid storage tank detachably coupled to the main unit 3. The fluid reservoir is used to contain a fluid, such as, but not limited to, insecticides, herbicides, fungicides, insecticides, fertilizer solutions, nutrient solutions, and the like. The host 3 may include a host housing 301 and a motor 302 accommodated in the host housing 301, and the pressurizing unit may be driven by the motor 302 to pressurize the liquid in the liquid storage tank so as to make the liquid flow out of the liquid storage tank.

In order to make the liquid flowing out of the liquid storage tank after pressurization can be operated and sprayed on crops in a target area, the liquid storage tank can be connected with a spray rod 4, and the spray rod 4 is communicated with the inner cavity of the liquid storage tank. The pressurized liquid can enter the spray rod 4 communicated with the liquid storage tank from the liquid storage tank and is sprayed out from the spray rod 4. The user can hold the spray rod 4 to aim at crops in a target area, and the liquid spraying is realized. Spray lance 4 and liquid storage pot can be for dismantling the connection, specifically, and the lateral wall of liquid storage pot is equipped with connector 201, and spray lance 4 and connector 201 accessible grafting, mode such as threaded connection realize dismantling the connection. In addition, the spray rod 4 and the connecting port 201 can be connected through a hose, so that the movement of the spray rod 4 can be facilitated, and the spraying operation range of the spray rod 4 can be expanded. Further, the spray rod 4 may be provided with a holding portion 401 for improving the comfort of human hand operation, so that the spray rod 4 can be held and operated by human hand, and the sprayed liquid can be accurately sprayed and applied on crops in the target area.

Further, the spray bar 4 may be provided with a switch valve having an operation dial 402 at a position located at the front end of the grip portion 401. The user holds the grip 401 with his hand, and presses or stops pressing the operation dial 402 to open or close the flow path of the spray bar 4, thereby performing on-off control of the liquid spray.

As shown in fig. 2, in one embodiment, the pressurizing unit may be an air pump 303 capable of being driven by a motor 302 to generate air, and the air generated by the air pump 303 may be output to the liquid storage tank to pressurize the liquid contained in the liquid storage tank. Since the air pump 303 can pressurize the liquid in an indirect manner by filling the liquid storage tank with a gas pressure medium, the air pump 303 is not in fluid communication with the liquid contained in the liquid storage tank. That is, the liquid in the liquid storage tank can be pressurized without flowing through the air pump 303.

Alternatively, in another embodiment, the pressurizing unit may be a screw pump, a plunger pump, a diaphragm pump, or the like that can be driven by the motor 302 to generate a pump output force that acts on the liquid flowing through the inside of the pump body to pressurize the liquid. Unlike the way in which the air pump 303 indirectly pressurizes liquid, screw pumps, plunger pumps, diaphragm pumps, or the like pressurize liquid in a direct manner by pumping liquid through the interior of the pump body, and therefore these pumps need to be in fluid communication with the liquid contained in the reservoir. That is, the liquid in the liquid storage tank needs to flow through the pump to be pressurized.

In one possible embodiment, the pressurizing unit may be provided as a separate structure inside or outside the fluid reservoir. Specifically, for example, when the pressurizing unit is the air pump 303, it may be disposed outside the liquid storage tank, or may be disposed inside the liquid storage tank. When disposed outside the reservoir, the air pump 303 may be secured to an outer wall of the reservoir, and an air outlet thereof may be connected to an interior of the reservoir via an air conduit (e.g., a connector 305 described below) or a hose to allow for the introduction of air and pressurization of the fluid. When the air pump 303 is arranged in the liquid storage tank, the air pump 303 can be arranged on the lower surface of the top wall of the liquid storage tank; or a partition board is arranged in the liquid storage tank, the partition board divides the inner space of the liquid storage tank into two isolation chambers, the air pump 303 is arranged in one of the isolation chambers, and the other isolation chamber is used for containing liquid. The air outlet of the air pump 303 can be connected to another isolated chamber for containing liquid through an air conduit (e.g., a hose) to introduce air and pressurize the liquid.

As can be seen from the above description of the working principle of the power pump such as the screw pump, the plunger pump or the diaphragm pump, when the pressurizing unit adopts the screw pump, the plunger pump or the diaphragm pump, it is usually only disposed in the liquid storage tank and contacts with the liquid contained in the liquid storage tank.

Further, when the pressurizing unit employs the air pump 303, the air pump 303 may be integrated as a part of the structure of the main body 3. Then in this embodiment the pressurizing unit may be arranged outside the reservoir as part of the structure of the main body 3. As shown in fig. 2, the air pump 303 may be housed in the main chassis casing 301 together with the motor 302. Also, a speed reduction mechanism (e.g., a planetary gear train) and a slider-crank mechanism 304 may be provided between the motor 302 and the air pump 303, so as to convert the high-speed rotational motion of the motor 302 into the low-speed linear reciprocating motion of the piston of the air pump 303. The air pump 303 can be driven by the motor 302 to output air to pressurize the liquid in the liquid storage tank.

It is to be noted that, unless otherwise specified, the following is developed in an embodiment in which the air pump 303 is employed in a pressurizing unit and the air pump 303 is provided in the main body casing 301 to be formed as a part of the structure of the main body 3.

The host 3 may further include a connector 305 having one end connected to the air outlet end of the air pump 303 and the other end extending to the outside of the host casing 301. The connector 305 is substantially a hollow tube, and is used for guiding the high-pressure air generated by the air pump 303 to the liquid storage tank to pressurize the liquid, and also for detachably assembling and connecting the host 3 and the liquid storage tank.

The liquid storage tank is provided with an opening end. As shown in FIGS. 2, 5 and 6, the reservoir may be open at its upper end to define the open end. The open end can be attached with a switching cover body which can cover or open the open end of the liquid storage tank. In one possible embodiment, the adapter cover can be detachably connected with the liquid storage tank through a thread fit manner.

Specifically, as shown in FIGS. 3-6, in one possible embodiment, the sidewall of the fluid reservoir adjacent the open end is necked inwardly, and the outside wall of the necked portion is externally threaded. The switching cover body is in a groove shell shape with an opening at the lower end, the inner wall of the switching cover body is provided with internal threads, and the switching cover body is detachably connected with the opening end of the liquid storage tank through the screwing action of the internal threads and the external threads. In order to facilitate the assembly or disassembly of the switching cover body and the liquid storage tank, the outer wall of the liquid storage tank can be provided with a handle 203, and the handle 203 can be held by a hand of a person, so that a force application point convenient to rotate is provided for the switching cover body and the liquid storage tank to be screwed together through threads so as to realize the assembly or the disassembly. Meanwhile, the handle 203 can also provide a convenient force application point for operators to carry the liquid storage tank. Furthermore, in order to ensure that the inner cavity of the liquid storage tank is sealed to enable gas to be suppressed and further realize pressurization of liquid after the switching cover body is connected with the liquid storage tank, a sealing element (such as a sealing ring) can be arranged between the outer wall of the necking part and the inner peripheral wall of the switching cover body.

Certainly, the detachable connection between the adapter cover and the liquid storage tank is not limited to the above-mentioned threaded connection, and other detachable connection modes such as a snap connection that can be realized between the adapter cover and the liquid storage tank are also feasible, and are not described herein in detail in this embodiment.

The host 3 can be connected with the liquid storage tank through the switching cover body. Specifically, the adapter cover is provided with a mating hole for connecting with the connector 305, and the connection between the host 3 and the liquid storage tank is realized by the connection between the connector 305 and the mating hole. Similarly, the connecting member 305 may be detachably connected to the adapter cover by means of screw-fitting. The specific implementation manner may be that an external thread is provided on an outer wall of the connecting member 305 extending to the outside of the host casing 301, an internal thread adapted to the inner wall of the mating hole is provided on the inner wall of the mating hole, and the connecting member 305 and the mating hole are screwed to realize the detachable connection with the adapter cover. Similarly, to ensure hermetic sealing of the interior of the reservoir, a seal may be provided between the outer wall of the connector 305 and the inner wall of the mating port.

As shown in fig. 1, 3 to 12, the lower surface of the adapter cover may extend downward to form an extension sleeve 5 at the edge of the mating hole, the extension sleeve 5 may be substantially cylindrical, and the inner wall thereof is also provided with an internal thread for matching with the external thread of the outer wall of the connecting member 305. Therefore, the length of the thread fit between the connecting piece 305 and the adapter cover can be increased, and the connection strength between the connecting piece 305 and the adapter cover is improved.

In addition, the inner wall of the extension sleeve 5 may be formed with a stopping step, and the outer wall of the connection member 305 may be formed with a limiting protrusion. The connecting piece 305 rotates and moves downwards to the limit bulge to abut against the stop step, so that the connecting piece 305 and the switching cover body can be simply identified to be assembled, and the connecting piece 305 and the switching cover body can be accurately assembled in place.

The extension sleeve 5 may be sleeved with a sealing gasket 501, which may be fixed on the lower surface of the top wall of the adapter cover. The gasket 501 may be squeezed between the end surface of the open end of the tank and the lower surface of the top wall of the adapter cover after the connector 305 and the mating hole are installed in place, to further improve the sealing effect at the joint of the tank and the adapter cover.

Similarly, to facilitate the assembly or disassembly of the connecting member 305 and the adapting cover, the top end of the main housing 301 may be provided with a handle portion 306, and a user may rotate the handle portion 306, so that the connecting member 305 is driven to rotate, thereby implementing the assembly or disassembly operation of the connecting member 305 and the adapting cover. In a specific operation, the handle 203 on the liquid storage tank can be used in combination, that is, a user can hold the handle 203 with one hand to circumferentially fix the liquid storage tank, and rotate the handle part 306 with the other hand to screw the connecting piece 305. In addition, the handle portion 306 facilitates the lifting operation of the main body casing 301 by the user.

Since the air pump 303 is accommodated in the main housing 301 to form a part of the structure of the main unit 3, the main unit 3 or the main housing 301 can be detachably connected to the adaptor cover by detachably connecting the connector 305 connected to the air pump 303 to the adaptor cover.

In one embodiment, the mating holes may be configured as through holes penetrating the upper and lower surfaces of the adaptor cover. Thus, when the adapter cover is connected to the opening end of the liquid storage tank and the host housing 301 is detached from the adapter cover, the connecting member 305 is removed from the mating hole, so that the inner cavity of the liquid storage tank can communicate with the outside through the mating hole. Thus, the mating hole can be used for injecting or throwing liquid, solid or granular medicaments, nutrient materials and the like into the liquid storage tank. Like this, under the condition of not dismantling the switching lid, perhaps switching lid is in the condition of being connected with the liquid storage pot, can directly pour into or throw into liquid or solid material in the liquid storage pot to can improve work efficiency.

In order to solve the problem of cross contamination of liquid caused by only one liquid storage tank in the prior art, the sprayer 100 of the embodiment of the invention may be provided with a plurality of liquid storage tanks, for example, at least two liquid storage tanks, including two or more liquid storage tanks. As shown in fig. 3 to 12, the plurality of tanks includes at least a first tank 1 and a second tank 2. The open end of the first reservoir 1 is the first open end 101 and the open end of the second reservoir 2 is the second open end 202. The first open end 101 and the second open end 202 have different specifications.

Bearing in mind the above description, the open end of the reservoir is attached to an adapter cover. Therefore, under the condition of a plurality of liquid storage tanks, the number of the switching covers is correspondingly multiple. As shown in fig. 5 to 12, in the present embodiment, the first opening end 101 and the second opening end 202 are respectively attached with the first adapter cover 6 and the second adapter cover 7 of corresponding specifications.

In the present embodiment, the "specification" may include a shape and a size. The "the first open end 101 and the second open end 202 have different specifications" may be that the first open end 101 and the second open end 202 have the same shape but different sizes; alternatively, the first open end 101 may have a shape and size different from the second open end 202. Similarly, the same explanation can be made for "the specification of the first adapter cover 6 is different from that of the second adapter cover 7".

For example, in one embodiment, the adapter cover is connected with the open end of the liquid storage tank through threads, and both the cross-sectional shape of the adapter cover and the cross-sectional shape of the open end of the liquid storage tank can be circular. The first open end 101 may have a different gauge from the second open end 202 such that the outer diameter dimensions of the first open end 101 and the second open end 202 are different. Accordingly, the specifications of the first and second adapter covers 6 and 7 attached correspondingly to the first and second open ends 101 and 202, respectively, may be different in such a manner that the inner diameter size of the first adapter cover 6 is different from the inner diameter size of the second adapter cover 7. Specifically, the outer diameter of the first opening end 101 is matched with the inner diameter of the first adapter cover, and the outer diameter of the second opening end 202 is matched with the inner diameter of the second adapter cover.

That is, in the embodiment where the adapter cover is detachably connected to the open end of the liquid storage tank by a screw thread, the "specification of the first open end 101 is different from the specification of the second open end 202" may specifically be that the first open end 101 and the second open end 202 have the same shape (both circular shapes), but different sizes (outer diameters). Similarly, the "specification of the first adapter cover 6 is different from the specification of the second adapter cover 7" may be specifically such that the first adapter cover 6 and the second adapter cover 7 have the same shape (both circular shapes) but different sizes (inner diameters).

Or in another embodiment, the adapter cover and the open end of the liquid storage tank are detachably connected by a snap, and the cross-sectional shape of the adapter cover and the cross-sectional shape of the open end of the liquid storage tank may not be limited to a circle, but may also include, but is not limited to, an ellipse, a polygon (e.g., a quadrangle, a hexagon, etc.), a special shape, and the like. The first open end 101 may have a different size from the second open end 202 such that the first open end 101 and the second open end 202 have different cross-sectional shapes. Accordingly, the specifications of the first and second adapter covers 6 and 7 attached correspondingly to the first and second open ends 101 and 202, respectively, may be different in such a manner that the cross-sectional shapes of the first and second adapter covers 6 and 7 are different. Since the first open end 101 and the second open end 202, and the first adaptor cover 6 and the second adaptor cover have different cross-sectional shapes, the sizes are also different. For example, the first open end 101 has an elliptical cross-sectional shape, and the second open end 202 has a quadrangular cross-sectional shape. Accordingly, the cross-sectional shapes of the first and second adapter covers 6 and 7 correspond to an ellipse and a quadrangle, respectively.

Therefore, in the embodiment where the adapter cover is detachably connected to the open end of the liquid storage tank by a snap fit, the "specification of the first open end 101 is different from the specification of the second open end 202" may specifically be that the first open end 101 and the second open end 202 are different in shape and size. Similarly, the "specification of the first adapter cover 6 is different from that of the second adapter cover 7" may be specifically such that the first adapter cover 6 and the second adapter cover 7 are different in shape and size.

Of course, in the embodiment where the adapter cover is detachably connected to the open end of the liquid storage tank by a snap, the same shape but different sizes are not excluded. For example, the cross-sectional shape of the first open end 101 is an ellipse/quadrangle/hexagon, and the cross-sectional shape of the second open end 202 is an ellipse/quadrangle/hexagon that are similar to each other in the cross-sectional shape of the first open end 101, but the similarity ratio between the cross-sectional shape of the first open end 101 and the cross-sectional shape of the second open end 202 is not 1. For example, the first opening end 101 has a cross-sectional shape of a 20cm square, and the second opening end 202 has a cross-sectional shape of a 40cm square, with a similarity ratio of 1: 2.

As described above, in order to connect with the connector 305, the first coupling hole 601 and the second coupling hole 702 are respectively formed in the first coupling cover 6 and the second coupling cover 7, and the first coupling hole 601 and the second coupling hole 702 are both adapted to the connector 305. Since the connecting member 305 is generally a standard member, its specification and size are generally fixed. Therefore, although the specifications of the first and second relay covers 6 and 7 are different, the specifications of the first and second coupling holes 601 and 702 are the same. That is, the mating holes of the adapter covers with different specifications are all matched with the connecting piece 305.

In the present embodiment, the specifications of the first mating hole 601 and the second mating hole 702 can be as described above with reference to the above. However, since the first and second coupling holes 601 and 702 need to be fitted with the connector 305, the specifications (including the sectional shape and size) of the first and second coupling holes 601 and 702 are fitted with the sectional shape and size of the connector 305 in a state where the sectional shape and size of the connector 305 have been determined.

For example, when the connection element 305 is detachably connected to the first and second coupling holes 601 and 702 by threads, the connection element 305 may have a circular cross-sectional shape with the first and second coupling holes 601 and 702, and the connection element 305 has an outer diameter equal to the inner diameter of the first and second coupling holes 601 and 702. Alternatively, when the connection piece 305 is detachably connected to the first and second mating holes 601 and 702 by a snap, the connection piece 305 may be an ellipse, a regular quadrangle, or a regular hexagon in the cross-sectional shape of the first and second mating holes 601 and 702, and the length of the major and minor axes of the ellipse is equal to the length of the regular quadrangle.

By providing the first liquid storage tank 1 and the second liquid storage tank 2, and attaching the first adapter cover 6 and the second adapter cover 7 with the corresponding specifications to the open ends 101, 202 of the first liquid storage tank 1 and the second liquid storage tank 2, the host casing 301 can be detachably connected with the corresponding liquid storage tanks through the corresponding adapter covers. Therefore, the selective matching of the host machine 3 and the first liquid storage tank 1 and the second liquid storage tank 2 is realized, and the problem of liquid cross contamination caused by arranging a single liquid storage tank can be solved.

The following description will be made in conjunction with the application scenario for preventing the cross contamination of the liquid using the first liquid storage tank 1 and the second liquid storage tank 2.

For example, in one operational scenario, there are a variety of liquids that a user may spray. Among the plurality of liquids to be sprayed, there is a liquid which is strong in adhesiveness and difficult to clean (referred to as liquid a for short). While the remaining other liquids generally adhere relatively easily to clean (collectively referred to as liquid B). When spraying is carried out, the first liquid storage tank 1 can be used for containing the liquid A exclusively, and the second liquid storage tank 2 is used for containing the liquid B exclusively. Thus, after the first liquid storage tank 1 finishes the spraying operation of the liquid A, even if the liquid A is not completely and thoroughly cleaned, the first liquid storage tank 1 is used for containing the liquid A, so that the problem of cross contamination between the liquid A and other liquids does not exist. After the second liquid storage tank 2 finishes the spraying operation of the liquid B, the liquid B can be easily cleaned, so that the problem of cross contamination of the liquid due to the replacement or difference of the types of the liquid B in the later spraying operation of the second liquid storage tank 2 is avoided.

For another example, in another application scenario, a user needs to frequently spray the planted flowers and plants with pesticides for controlling pests and nutrient solutions for supporting the normal growth of the flowers and plants. The first liquid storage tank 1 can be used for containing pesticides, and the second liquid storage tank 2 can be used for containing nutrient solution. Wherein, the first liquid storage tank 1 does not need to be cleaned every time after the pesticide is sprayed. The second liquid storage tank 2 for containing the nutrient solution needs to be cleaned after the nutrient solution spraying operation is finished each time unless the second liquid storage tank is used for spraying clear water. Therefore, when a user needs to spray nutrient solution or pesticide to crops, the first liquid storage tank 1 or the second liquid storage tank 2 can be selected in a targeted mode. Thus, the situation that the nutrient solution is polluted when the nutrient solution needs to be sprayed next time due to pesticide residue on the liquid storage tank when the sprayer 100 is only provided with one liquid storage tank can be avoided.

In addition, in the embodiment where the pressurizing unit is the air pump 303, the high-pressure air generated by the air pump 303 is introduced into the liquid storage tank through the connecting member 305, and the liquid contained in the liquid storage tank can flow out of the liquid storage tank through the spray rod 4 under the pressure of the air. In this process, the liquid is physically isolated from the internal flow passages of the air pump 303 and the connection member 305, and the liquid does not flow through the internal flow passages of the air pump 303 and the connection member 305. Therefore, compared with a method of pumping and pressurizing liquid by using a screw pump, a plunger pump, a diaphragm pump or the like and then leading out the pressurized liquid through a pump delivery pipeline, the method has no problem of cross contamination caused by contact and adhesion between the liquid and the internal flow passages of the air pump 303 and the connecting piece 305. Furthermore, after the sprayer 100 finishes the spraying operation of one kind of liquid, the air pump 303 and the internal flow passage of the connecting piece 305 do not need to be cleaned, and the time and the cost of the cleaning operation are reduced.

In the embodiment of using the air pump 303 to pressurize to prevent the cross contamination of the liquids, the number of the liquid storage tanks may be one or at least two. In the case that the number of the liquid storage tanks is at least two, the volumes of the at least two liquid storage tanks may be the same or different, and the main machine housing 301 may be selectively connected to one of the liquid storage tanks through the adaptor cover having the corresponding specification.

As described above, in the case where the number of liquid tanks is at least two, the number of spray bars 4 may also be at least two correspondingly. And each spray rod 4 is correspondingly connected with the corresponding liquid storage tank, namely the spray rods 4 correspond to the liquid storage tanks one by one. For example, the first tank 1 is provided with the spray bar 4 connected only to the first tank 1 and not to the second tank 2, and the second tank 2 is provided with the spray bar 4 connected only to the second tank 2 and not to the first tank 1. Therefore, the problem of cross contamination of liquid caused by sharing or mixing the spray rod 4 by a plurality of liquid storage tanks is avoided.

In the case where two or more connection ports 201 are provided on the reservoir tank, the reservoir tank may be provided with the spray bars 4 in a number not less than the number of the connection ports 201. For example, the first tank 1 is provided with only one connection port 201, and the first tank 1 may be provided with at least one spray bar 4. The first liquid storage tank 1 is provided with two connecting ports 201, and the first liquid storage tank 1 can be provided with at least two spray bars 4. Wherein the first reservoir 1 and the second reservoir 2 are provided with a plurality of spray bars 4 for replacement or maintenance.

Further, in order to minimize the space occupied by the sprayer 100 during transportation and the storage space of the sprayer 100 when not in use, as shown in fig. 11, 12 and 16, the first tank 1 can be accessed into the interior of the second tank 2 through the second open end 202 of the second tank 2, such that the first tank 1 can be received within the second tank 2.

In order to enable the first fluid reservoir 1 to smoothly enter and exit the second opening end 202, the first fluid reservoir 1 has a first receiving direction L1, and the first fluid reservoir 1 can enter the inner cavity of the second fluid reservoir 2 along the first receiving direction L1. The second tank 2 includes a bottom wall facing the second open end 202, and a projection of the first tank 1 onto the bottom wall is located within a range of a projection of the second open end 202 onto the bottom wall when the first receiving direction L1 is substantially perpendicular to the bottom wall.

In the present embodiment, the first receiving direction L1 is a direction substantially perpendicular to the second open end 202. Specifically, as shown in fig. 13 to 16, the second open end 202 is formed by an open design at the upper end of the second tank 2, and the first storage direction L1 is vertical when the second open end 202 is substantially horizontal.

The first liquid storage tank 1 may be substantially cylindrical, and the cross section thereof may be circular, elliptical, polygonal (such as regular quadrilateral, regular hexagon, etc.), irregular, etc., and the first liquid storage tank 1 may be correspondingly cylindrical, elliptical cylindrical, polygonal cylindrical, irregular cylindrical, etc. hollow structures. Thus, the first tank 1 may have a central axis O.

In one embodiment, the first receiving direction L1 may be parallel to the central axis O of the first tank 1. Specifically, as shown in fig. 13, the central axis O of the first tank 1 is a vertical direction, and the first storage direction L1 is a vertically downward direction. In this embodiment, the first tank 1 will be received in the interior of the second tank 2 in an upright or upright position (as shown in fig. 11 and 12).

Alternatively, as shown in FIG. 15, in another embodiment, the first receiving direction L1 is perpendicular to the central axis O of the first tank 1. The central axis O of the first tank 1 is horizontal, and the first storage direction L1 is still vertical downward. In this embodiment, the first tank 1 will be received within the interior of the second tank 2 in a horizontal or lying position (as shown in fig. 16).

Of course, the orientation of the first receiving direction L1 and the central axis O of the first tank 1 is not limited to the two manners described above, and other manners may be possible. For example, the first receiving direction L1 may be at any angle α (as shown in FIG. 14) relative to the central axis O of the first tank 1, and correspondingly, the first tank 1 may enter the open end 202 of the second tank 2 with its central axis O at any angle α relative to the first receiving direction L1.

As described above, the second liquid storage tank 2 may also be substantially cylindrical, and the cross section thereof may be circular, elliptical, polygonal (such as regular quadrilateral, regular hexagon, etc.), irregular, etc., so that the second liquid storage tank 2 corresponds to a hollow structure such as cylindrical, elliptical cylindrical, polygonal cylindrical, irregular cylindrical, etc., and the shape of the bottom wall and the cross section of the peripheral wall correspond to circular, elliptical, polygonal, irregular, etc.

In the present embodiment, the first receiving direction L1 may be substantially perpendicular to the bottom wall such that the included angle between the first receiving direction L1 and the bottom wall is approximately 90 °, or the difference between the included angle between the first receiving direction L1 and the bottom wall and the target value 90 ° is within a predetermined range. For example, the difference between the angle between the first receiving direction L1 and the bottom wall and the target value of 90 ° is [0 °, 10 ° ], and the first receiving direction L1 can be considered to be substantially perpendicular to the bottom wall.

When the first receiving direction L1 is substantially perpendicular to the bottom wall, the projection of the first tank 1 on the bottom wall is located within the range of the projection of the second open end 202 on the bottom wall. The first fluid reservoir 1 has an outer profile shape positioned within the second open end 202 such that the first fluid reservoir 1 may pass through the second open end 202 and into the interior of the second fluid reservoir 2.

For example, in one particular embodiment, the first reservoir 1 is hollow cylindrical and the second open end 202 is circular in shape. The first receiving direction L1 is parallel to the central axis O of the first tank 1, i.e., as shown in FIG. 13. The projection of the first tank 1 on the bottom wall is within the projection of the second open end 202 on the bottom wall, which means that the outer diameter of the first tank 1 is smaller than the inner diameter of the second open end 202. Thus, the first tank 1 may be in an upright or upright position entering the second open end 202.

Alternatively, in another specific embodiment, the first reservoir 1 has a hollow regular quadrangular shape and the second open end 202 has a regular quadrangular shape. The first receiving direction L1 is parallel to the central axis O of the first tank 1, i.e., as shown in FIG. 13. The projection of the first tank 1 on the bottom wall is located in the projection range of the second open end 202 on the bottom wall, which means that the side length of the square section of the first tank 1 along the direction perpendicular to the central axis 0 of the first tank is smaller than the side length of the second open end 202. Thus, the first tank 1 may be in an upright or upright position entering the second open end 202.

Alternatively, in yet another specific embodiment, the first reservoir 1 has a hollow regular quadrangular prism shape and the second open end 202 has a circular shape. The first receiving direction L1 is parallel to the central axis O of the first tank 1, i.e., as shown in FIG. 13. The projection of the first liquid storage tank 1 on the bottom wall is located in the projection range of the second open end 202 on the bottom wall, which means that the diameter of the circumscribed circle of the square section of the first liquid storage tank 1 along the direction perpendicular to the central axis 0 thereof is smaller than the inner diameter dimension of the second open end 202. Thus, the first tank 1 may be in an upright or upright position entering the second open end 202.

Still alternatively, in yet another specific embodiment, the first reservoir 1 has a hollow regular quadrangular prism shape and the second open end 202 has a circular shape. The first receiving direction L1 is perpendicular to the central axis O of the first tank 1, i.e., as shown in FIG. 15. The projection of the first liquid storage tank 1 on the bottom wall is located in the projection range of the second open end 202 on the bottom wall, which means that the diameter of the circumcircle of the rectangular section of the first liquid storage tank 1 along the direction parallel to the central axis O thereof is smaller than the inner diameter dimension of the second open end 202. Thus, the first reservoir 1 may be horizontal or horizontal and enter the second open end 202.

The central axis O of the first tank 1 may be at any angle to the first storage direction L1, that is, the first tank 1 may enter the second open end 202 in at least one direction. Therefore, with the structural design in which the projection of the first tank 1 on the bottom wall is located within the range of the projection of the second open end 202 on the bottom wall when the first receiving direction L1 is substantially perpendicular to the bottom wall, it is ensured that the first tank 1 can enter the open end 202 of the second tank 2 at least along the first receiving direction L1.

Further, after the above embodiment is adopted to solve the problem that the first liquid storage tank 1 enters the open end 202 of the second liquid storage tank 2, the problem that the second liquid storage tank 2 receives the first liquid storage tank 1 should also be solved. Similar to the above-described embodiment, in order to achieve the storage of the first tank 1 by the second tank 2, when the first storage direction L1 is substantially perpendicular to the bottom wall, the projection of the first tank 1 on the bottom wall is located within the range of the projection of the inner wall of the second tank 2 on the bottom wall. The outer wall of the first reservoir 1 is positioned inside the inner wall of the second reservoir 2 so that the first reservoir 1 can be received within the interior of the second reservoir 2.

Also, in one particular embodiment, the first reservoir 1 and the second reservoir 2 are each in the shape of a hollow cylinder. The first receiving direction L1 is parallel to the central axis O of the first tank 1, i.e., as shown in FIG. 13. The projection of the first liquid storage tank 1 on the bottom wall is positioned in the projection range of the inner wall of the second liquid storage tank 2 on the bottom wall, so that the outer diameter of the first liquid storage tank 1 is smaller than the inner diameter of the second liquid storage tank 2. Thus, the first tank 1 can be housed in the second tank 2 in an upright or upright state.

Alternatively, in another specific embodiment, the first reservoir 1 and the second reservoir 2 are both hollow and square prisms. The first receiving direction L1 is parallel to the central axis O of the first tank 1, i.e., as shown in FIG. 13. The projection of the first liquid storage tank 1 on the bottom wall is positioned in the projection range of the inner wall of the second liquid storage tank 2 on the bottom wall, so that the side length of the square section of the first liquid storage tank 1 along the direction vertical to the central axis O thereof is smaller than the side length of the square section of the second liquid storage tank 2 along the direction vertical to the central axis O thereof. Thus, the first tank 1 can be housed in the second tank 2 in an upright or upright state.

Alternatively, in yet another embodiment, the first reservoir 1 is in the shape of a hollow regular quadrangular prism and the second reservoir 2 is in the shape of a hollow cylinder. The first receiving direction is parallel to the central axis O of the first tank 1, i.e., as shown in fig. 13. The projection of the first liquid storage tank 1 on the bottom wall is positioned in the projection range of the inner wall of the second liquid storage tank 2 on the bottom wall, so that the diameter of the circumscribed circle of the square section of the first liquid storage tank 1 along the direction perpendicular to the central axis O of the first liquid storage tank is smaller than the inner diameter of the second liquid storage tank 2. Thus, the first tank 1 can be housed in the second tank 2 in an upright or upright state.

Still alternatively, in yet another specific embodiment, the first reservoir 1 is in the shape of a hollow regular quadrangular prism and the second reservoir 2 is in the shape of a hollow cylinder. The first receiving direction L1 is perpendicular to the central axis O of the first tank 1, i.e., as shown in FIG. 15. The projection of the first liquid storage tank 1 on the bottom wall is positioned in the projection range of the inner wall of the second liquid storage tank 2 on the bottom wall, so that the diameter of a circumscribed circle of the rectangular section of the first liquid storage tank 1 along the direction parallel to the central axis O of the first liquid storage tank is smaller than the inner diameter of the second liquid storage tank 2. Thus, the first tank 1 can be received in the second tank 2 in an upright or upright position (as shown in FIG. 16).

In this embodiment, in order to ensure that the second liquid storage tank 2 can completely store the first liquid storage tank 1, the height of the second liquid storage tank 2 along the first storage direction is not less than the height of the first liquid storage tank 1 along the first storage direction.

The specific storage process of the first liquid storage tank 1 and the second liquid storage tank 2 can be as follows: the second adapting cover body 7 is unscrewed from the open end 202 of the second liquid storage tank 2, the second open end 202 is opened, and the first liquid storage tank 1 is placed into the second liquid storage tank 2 through the second open end 202.

In this way, the first tank 1 can be received in the second tank 2. Therefore, the space occupied by the first liquid storage tank 1 and the space occupied by the second liquid storage tank 2 are reduced to the space occupied by the second liquid storage tank 2. Therefore, the first liquid storage tank 1 and the second liquid storage tank 2 can realize the integration and the miniaturization of the structure, reduce the packaging and the storage size, and are favorable for the reduction of the transportation cost and the reduction of the storage space.

Further, after the first tank 1 is received in the inner cavity of the second tank 2, the first adapter cover 6 can be detached from or coupled to the first opening end 101, and the second adapter cover 7 can be detached from or coupled to the second opening end 202. Specifically, in the embodiment illustrated in fig. 11, after the first tank 1 is received in the inner cavity of the second tank 2, the first and second adaptor covers 6 and 7 are respectively mated with the first and second open ends 101 and 202. In this way, the first fluid reservoir 1 can be sealed from undesired removal from the second open end 202. In the embodiment illustrated in fig. 12, after the first tank 1 is received in the inner cavity of the second tank 2, the first and second adapter covers 6 and 7 are respectively in the detachable state of being mated with the first and second open ends 101 and 202. Like this, when needs use, can directly take out first liquid storage pot 1 from second liquid storage pot 2, can be quick put into use, need not take out first liquid storage pot 1 from second liquid storage pot 2 after second switching lid 7, first switching lid 6 are unscrewed in proper order again to can simplify the operating procedure greatly, reduce operating time, improve work efficiency.

As described above, the lower surface of the relay cover is formed with an extension sleeve having a free end (i.e., a lower end as illustrated in fig. 11) facing away from the mating hole at a position located at the edge of the mating hole. In the embodiment where the first and second adaptor covers 6, 7 are mated with the first and second open ends 101, 202, respectively, after the first tank 1 is received in the interior of the second tank 2, the free end of the extension sleeve on the second adaptor cover 7 is away from or in contact with the first adaptor cover 6. In this way, the free end of the extension sleeve does not interfere with the first adaptor cover 6.

The specific implementation manner can be that the difference between the depth of the second liquid storage tank 2 and the overall height of the first liquid storage tank 1 after the first adapter cover body 6 is connected with the second liquid storage tank is greater than or equal to the height of the extension sleeve on the second adapter cover body 7. When the difference between the depth of the second liquid storage tank 2 and the overall height of the first liquid storage tank 1 after being connected with the first adapter cover 6 is larger than the height of the extension sleeve on the second adapter cover 7, the free end of the extension sleeve is away from the upper surface of the first adapter cover 6. Correspondingly, when the difference between the depth of the second liquid storage tank 2 and the overall height of the first liquid storage tank 1 after being matched with the first adapter cover body 6 is equal to the height of the extension sleeve on the second adapter cover body 7, the free end of the extension sleeve just contacts with the upper surface of the first adapter cover body 6.

To further compress the volume of the sprayer 100 in the inactive state, the host 3 is also operable to enter the corresponding reservoir through the open end of the reservoir. In particular, in the embodiment where the first fluid reservoir 1 is accommodated in the second fluid reservoir 2, and/or the main unit 3 is accommodated in the first fluid reservoir 1 to reduce the occupied space of the sprayer 100 during transportation and the storage space of the sprayer 100 when not in use, the pressurizing unit is not limited to the air pump 303, and may be a screw pump, a plunger pump, a diaphragm pump, or the like. When the pressurizing unit is an air pump 303, the air pump 303 is preferably accommodated in the main body case 301 to form a part of the structure of the main body 3, and may be accommodated in the liquid storage tank together with the main body 3.

As described above, in order to allow the host 3 to smoothly enter and exit the open end of the liquid storage tank, the host 3 has a second storage direction, and the host 3 can enter the inner cavity of the liquid storage tank along the second storage direction. The liquid storage tank includes a bottom wall facing the open end thereof, and when the second storage direction is substantially perpendicular to the bottom wall, the projection of the main body 3 on the bottom wall is located within the range of the projection of the open end on the bottom wall. As for the principle that the projection of the host machine 3 on the bottom wall of the liquid storage tank is located in the projection range of the open end on the bottom wall when the second storage direction is approximately perpendicular to the bottom wall, the host machine 3 can smoothly pass through the open end of the liquid storage tank by adopting the structural design, the description above can be referred to, and the description is omitted here.

Similarly, after the host 3 enters the opening end of the liquid storage tank, the problem that the liquid storage tank accommodates the host 3 should be solved. Similar to the above-described embodiment, when the second housing direction is substantially perpendicular to the bottom wall, the projection of the main unit 3 on the bottom wall is located within the range of the projection of the inner wall of the liquid storage tank on the bottom wall.

In this embodiment, the number of the liquid storage tanks may be one or more. When the number of the liquid storage tanks is one, only the accommodation of the main body 3 can be realized. When the number of the liquid storage tanks is plural, the plural liquid storage tanks may be completely the same (for example, all the liquid storage tanks have the same inner diameter), and cannot be accommodated therebetween, and the host machine 3 may be accommodated in any one of the liquid storage tanks.

Of course, the multiple tanks may not be identical and include at least a first tank 1 and a second tank 2. In conjunction with the above reservoir receiving embodiment, the first reservoir 1 may be received in the interior of the second reservoir 2 via the second open end 202, and the host 3 may be received in the first reservoir 1 via the first open end 101. Thus, the main unit 3 is accommodated while the first liquid storage tank 1 and the second liquid storage tank 2 are accommodated and integrated. Thereby further reducing the packaging and storage volume of the sprayer 100 and reducing the footprint.

In a specific embodiment, the open end 101 of the first tank 1 is circular, and the main unit housing 301 included in the main unit 3 may be substantially truncated cone shape with a small top and a large bottom. That is, the main body casing 301 also has a central axis, and the main body casing 301 has a circular sectional shape perpendicular to the central axis, but has a sectional shape with a diameter gradually increasing downward along the central axis. Also, the handle portion 306 and the like provided on the main body case 301 do not protrude beyond the edge of the main body case 301. Therefore, in a cross section perpendicular to the central axis, the largest dimension is the lower end of the main chassis 301. The second receiving direction is parallel to the central axis of the main housing 301, so that the main unit 3 can enter the open end 101 of the first liquid storage tank 1 in a vertical or upright state as long as the inner diameter of the open end 101 of the first liquid storage tank 1 is larger than the diameter of the lower end of the main housing 301.

Further, in another specific embodiment, the first fluid reservoir 1 is in the shape of a hollow cylinder, and the inner diameter of the first fluid reservoir 1 is larger than the diameter of the lower end of the main machine housing 301. In the case where the above-described host 3 enters the open end 101 of the first liquid storage tank 1 in the upright or standing state, the host 3 eventually enters and is housed in the first liquid storage tank 1 in the upright or standing state.

To further compress the volume of sprayer 100 in the inactive state, spray bar 4 may also be operatively received in one of the reservoirs. Specifically, in one embodiment, spray bar 4 may be configured as a single piece hollow rod-like structure, and the reservoir may be configured to have a height greater than the length of spray bar 4, such that spray bar 4 of the single piece hollow rod-like structure may pass directly into its interior cavity through the open end of the reservoir. Alternatively, in another embodiment, the spray rod 4 may be a multi-section hollow rod-shaped structure, which may be formed by detachably connecting (e.g., screwing) a plurality of hollow short sections 403 end to end, and the liquid storage tank is configured to have a height greater than the maximum length of the plurality of hollow short sections 403, so that the spray rod 4 is disassembled into the plurality of hollow short sections 403, and the plurality of hollow short sections 403 may enter the inner cavity of the liquid storage tank through the open end of the liquid storage tank.

In the present embodiment, the number of the liquid storage tanks can also be one or more. When the number of the liquid storage tanks is one, the spray bar 4 may be housed in the liquid storage tank together with the main unit 3. When the number of the liquid storage tanks is multiple, the liquid storage tank at least comprises a first liquid storage tank 1 and a second liquid storage tank 2. The first reservoir 1 is housed in the inner cavity of the second reservoir 2 and the host 3 is housed in the first reservoir 1. The spray bar 4 may be housed in the first reservoir 1 together with the main unit 3 or may be housed in the second reservoir 2 separately from the main unit 3. Alternatively, when the spray bar 4 has a detachable structure such as a multi-section hollow rod, the plurality of hollow stubs 403 included in the spray bar 4 are detached and then stored in the first tank 1 and the second tank 2, respectively.

In the sprayer 100 of one embodiment of the present invention, the first liquid storage tank 1 and the second liquid storage tank 2 are provided, and the first adapter cover 6 and the second adapter cover 7 with corresponding specifications are attached to the open ends 202 of the first liquid storage tank 1 and the second liquid storage tank 2, so that the main machine housing 301 can be detachably connected with the corresponding liquid storage tanks through the corresponding adapter covers. Therefore, the selective matching of the host machine 3 and the first liquid storage tank 1 and the second liquid storage tank 2 is realized, and the problem of liquid cross contamination caused by arranging a single liquid storage tank can be solved.

In the sprayer 100 according to another embodiment of the present invention, the air pump 303 is used to input air into the liquid storage tank to pressurize the liquid contained in the liquid storage tank, and the liquid contained in the liquid storage tank flows out of the liquid storage tank through the spray rod 4 under the pressure of the air. Compared with the prior art that the pressurizing units such as a screw pump, a plunger pump or a diaphragm pump are used for pressurizing liquid to cause liquid contact and adhesion between the pressurizing units and the pump delivery pipeline, in the operation process of the sprayer 100 according to the embodiment of the invention, the liquid does not contact with the air pump 303 and the internal flow passage of the connecting piece 305, so that the problem of cross contamination caused by contact and adhesion between the liquid and the internal flow passages of the air pump 303 and the connecting piece 305 does not exist. Furthermore, the sprayer 100 according to the embodiment of the present invention does not need to clean the air pump 303 and the internal flow passage of the connector 305 after completing one liquid spraying operation, thereby reducing the time and cost of the cleaning operation.

In a sprayer 100 according to another embodiment of the present invention, the first reservoir 1 may be received in the second reservoir 2. Therefore, the space occupied by the first liquid storage tank 1 and the space occupied by the second liquid storage tank 2 are reduced to the space occupied by the second liquid storage tank 2. Therefore, the first liquid storage tank 1 and the second liquid storage tank 2 can realize the integration and the miniaturization of the structure, reduce the packaging and the storage size, and are favorable for the reduction of the transportation cost and the reduction of the storage space.

In the sprayer 100 according to the still another or further embodiment of the present invention, the main body 3 may be housed in the reservoir, so that the volume of the sprayer 100 can be further reduced.

It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A sprayer, comprising:

the liquid storage tank is used for containing liquid and is provided with an opening end;

the host comprises a host shell and a motor accommodated in the host shell;

an air pump driven by the motor to pressurize the liquid in the liquid storage tank;

the method is characterized in that: the number of the liquid storage tanks is at least two, and the liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank; the specification of the opening end of the first liquid storage tank is different from that of the opening end of the second liquid storage tank, and the opening end of the first liquid storage tank and the opening end of the second liquid storage tank are respectively attached with a first switching cover body and a second switching cover body with corresponding specifications; the first liquid storage tank and the second liquid storage tank can be detachably connected with the host shell through the first switching cover body and the second switching cover body respectively.

2. The nebulizer of claim 1, wherein: the host machine also comprises a connecting piece which can be detachably connected with the first switching cover body and the second switching cover body, and the connecting piece can communicate the gas generated by the gas pump to the first liquid storage tank or the second liquid storage tank; the first switching cover body and the second switching cover body are both provided with matching holes matched with the connecting pieces, and the specifications of the matching holes in the first switching cover body and the second switching cover body are the same.

3. The nebulizer of claim 2, wherein: the matching hole is a through hole matched and connected with the connecting piece in a threaded mode; when the host shell is detached and separated from the first switching cover body or the second switching cover body, the inner cavity of the first liquid storage tank or the inner cavity of the second liquid storage tank can be communicated with the outside through the matching hole.

4. The nebulizer of claim 2, wherein: the first liquid storage tank and the second liquid storage tank are respectively and correspondingly connected with a spray rod; when the sprayer is in a working state, the air generated by the air pump is communicated into the first liquid storage tank or the second liquid storage tank through the connecting piece, and the liquid contained in the first liquid storage tank or the second liquid storage tank can be respectively sprayed out through the corresponding spray rods under the pressure action of the air.

5. The nebulizer of claim 1, wherein: the first liquid storage tank can enter the inner cavity of the second liquid storage tank through the open end of the second liquid storage tank.

6. The nebulizer of claim 1, wherein: the air pump is configured to be capable of being accommodated in the host machine shell, and the host machine can enter the inner cavity of the first liquid storage tank through the opening end of the first liquid storage tank.

7. A sprayer, comprising:

the liquid storage tank is used for containing liquid and is connected with a spray rod;

the host comprises a host shell and a motor accommodated in the host shell;

the method is characterized in that: the number of the liquid storage tanks is at least two, and the main machine shell can be selectively connected with one of the liquid storage tanks; the liquid contained in the liquid storage tank is not communicated with the air pump fluid, and the pressurized liquid can enter the spray rod from the liquid storage tank and is sprayed out from the spray rod.

8. The nebulizer of claim 7, wherein: the number of the spray rods is at least two, and each spray rod is correspondingly connected with the corresponding liquid storage tank; when the sprayer is in a working state, the air generated by the air pump is communicated into the liquid storage tank, and the liquid contained in the liquid storage tank is sprayed out through the corresponding spray rod under the pressure of the air.

9. The nebulizer of claim 7, wherein: the at least two liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank, and the first liquid storage tank can enter the inner cavity of the second liquid storage tank through the open end of the second liquid storage tank.

10. A sprayer, comprising:

the host comprises a host shell and a motor accommodated in the host shell;

a pressurizing unit driven by the motor to pressurize the liquid in the liquid storage tank;

the method is characterized in that: the number of the liquid storage tanks is at least two, and the liquid storage tanks comprise a first liquid storage tank and a second liquid storage tank; the first liquid storage tank can enter the inner cavity of the second liquid storage tank through the open end of the second liquid storage tank.

11. The nebulizer of claim 10, wherein: the first liquid storage tank is provided with a first storage direction, and the first liquid storage tank can enter the opening end of the second liquid storage tank along the first storage direction; the second reservoir includes a bottom wall facing the open end thereof; when the first storage direction is approximately perpendicular to the bottom wall, the projection of the first liquid storage tank on the bottom wall is positioned in the projection range of the open end of the second liquid storage tank on the bottom wall.

12. The nebulizer of claim 11, wherein: when the first storage direction is approximately perpendicular to the bottom wall, the projection of the first liquid storage tank on the bottom wall is located in the projection range of the inner wall of the second liquid storage tank on the bottom wall.

13. The nebulizer of claim 10, wherein: the sprayer also comprises a first switching cover body which can detachably connect the first liquid storage tank with the main machine shell, and a second switching cover body which can detachably connect the second liquid storage tank with the main machine shell; the first switching cover body and the second switching cover body are respectively detachably connected with the open end of the first liquid storage tank and the open end of the second liquid storage tank;

when the first liquid storage tank is accommodated into the inner cavity of the second liquid storage tank, the first switching cover body is detached from or connected with the opening end of the first liquid storage tank, and the second switching cover body is detached from or connected with the opening end of the second liquid storage tank.

14. The nebulizer of claim 13, wherein: the host machine also comprises a connecting piece which can be detachably connected with the first switching cover body or the second switching cover body selectively, and the first switching cover body and the second switching cover body are both provided with matching holes matched with the connecting piece; the lower surfaces of the first switching cover body and the second switching cover body extend outwards at the position of the edge of the matching hole to form an extending sleeve, and the extending sleeve is provided with a free end departing from the matching hole;

when the first liquid storage tank is accommodated in the inner cavity of the second liquid storage tank, the first switching cover body and the second switching cover body are respectively matched and connected with the opening end of the first liquid storage tank and the opening end of the second liquid storage tank, and the free end of the extension sleeve on the second switching cover body is separated from or contacted with the first switching cover body.

15. The nebulizer of claim 10, wherein: the pressurization unit is an air pump which is configured to be accommodated in the main machine shell; the host machine can enter the inner cavity of the first liquid storage tank through the open end of the first liquid storage tank.

16. A sprayer, comprising:

the host comprises a host shell and a motor accommodated in the host shell;

the method is characterized in that: the host machine can enter the inner cavity of the liquid storage tank through the opening end.

17. The nebulizer of claim 16, wherein: the pressurization unit is an air pump which is configured to be accommodated in the main machine shell; the host machine is provided with a second storage direction, and the host machine can enter the opening end of the liquid storage tank along the second storage direction; the liquid storage tank comprises a bottom wall facing the open end; when the second accommodating direction is approximately perpendicular to the bottom wall, the projection of the host on the bottom wall is located within the projection range of the open end on the bottom wall.

18. The nebulizer of claim 17, wherein: when the second accommodating direction is approximately perpendicular to the bottom wall, the projection of the host on the bottom wall is located in the projection range of the inner wall of the liquid storage tank on the bottom wall.