Watering can

Abstract

The invention belongs to the technical field of paint, and discloses a sprinkling can which comprises an outer cup, an inner cup and a cup cover, a matching hole is formed in the bottom wall of the outer cup, the inner cup is rotatably mounted in the outer cup, an openable vent valve is arranged at the bottom of the inner cup, and the inner cup is communicated with the external environment when the vent valve is opened. The cup cover is partially inserted into the inner cup, and the cup cover and the outer cup are clamped in a rotating mode. A limiting structure is arranged between the vent valve and the outer cup, so that the inner cup has a locking position which is locked relative to the outer cup in the height direction of the inner cup and an unlocking position which is unlocked relative to the outer cup in the height direction of the inner cup. According to the sprinkling can, it can be well guaranteed that paint flows out smoothly, the amount of residual paint in the sprinkling can is relatively small, and the phenomenon of wrinkles caused by the fact that the inner cup is driven to rotate by rotating the cup cover can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of paints and coatings, and particularly to a spray bottle. Background Art

[0002] Liquid spray guns are often used to spray coatings such as stains, primers, paints, sealants, etc. onto surfaces. In known spray guns, a spray bottle is a container used to hold liquid during spraying, and the spray bottle is used in conjunction with a spray nozzle. Existing spray bottles are usually inverted during use. Since the interior of the spray bottle is relatively airtight, in the actual working process, it is easy to occur that the paint does not flow smoothly and there is too much paint remaining in the spray bottle. And existing spray bottles usually have an inner cup, an outer cup and a bottle cap. When rotating the bottle cap, it is easy to occur that the upper part of the inner cup rotates with the bottle cap while the lower part is fixed relative to the outer cup, resulting in the wrinkling phenomenon caused by the rotation of the cup cap driving the inner cup to rotate. Summary of the Invention

[0003] The purpose of the present invention is to provide a spray bottle which can better ensure that the paint flows out smoothly, and there is relatively less paint remaining in the spray bottle, and can also avoid the occurrence of the wrinkling phenomenon of the inner cup.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] The present invention discloses a spray bottle, including an outer cup, an inner cup and a cup cap. A mating hole is provided on the bottom wall of the outer cup. The inner cup is rotatably installed inside the outer cup. An openable and closable air valve is provided at the bottom of the inner cup. When the air valve is opened, the inner cup is in communication with the external environment. A part of the cup cap is inserted into the inner cup, and the cup cap is rotationally clamped with the outer cup. Wherein, a limiting structure is provided between the air valve and the outer cup, and the air valve can rotate relative to the limiting structure.

[0006] In some embodiments, a ventilation hole is provided at the bottom of the inner cup. The air valve includes: a valve seat, which is connected to the inner cup and has an air flow channel corresponding to the ventilation hole; a valve plug, one end of the valve plug is connected to the valve seat, and a plunger portion capable of being inserted into the air flow channel is provided at the other end of the valve plug.

[0007] In some specific embodiments, a clamping hole is provided on one of the outer peripheral walls of the valve plug and the valve seat at the end where the plunger portion is provided, and a clamping protrusion cooperating with the clamping hole is provided on the other of the outer peripheral walls of the valve plug and the valve seat at the end where the plunger portion is provided.

[0008] In some specific embodiments, the limiting structure includes a valve seat, the valve seat is installed in the fitting hole, the valve seat is provided with a mounting hole corresponding to the fitting hole and a first limiting hole communicating with the mounting hole, and the ventilation valve is provided with a first limiting portion, and the first limiting portion can be inserted into the first limiting hole.

[0009] In some specific embodiments, the valve seat is further provided with a plurality of first limiting protrusions arranged at intervals along its circumferential direction, and the first limiting portion can abut against the first limiting protrusions.

[0010] In some specific embodiments, the fitting hole has a stepped surface, and the outer side wall of the valve seat has a plurality of abutting protrusions arranged at intervals along its circumferential direction, and the plurality of abutting protrusions respectively abut against the stepped surface.

[0011] In some embodiments, the bottom of the outer cup is provided with a plurality of second limiting holes arranged at intervals along the circumference of the fitting hole and communicating with the fitting hole. The limiting structure includes a limiting convex ring, and the limiting convex ring is provided with at least one second limiting portion. The limiting convex ring is sleeved on the ventilation valve and can rotate relative to the ventilation valve.

[0012] In some specific embodiments, at least one second limiting protrusion is provided on the bottom wall of the outer cup, and the second limiting portion can abut against the second limiting protrusion.

[0013] In some embodiments, a first rotary clamping structure is provided on the outer peripheral wall of the outer cup, and a second rotary clamping structure is provided at the edge of the cup cover. The first rotary clamping structure is configured to be rotatably engaged with the second rotary clamping structure to realize the clamping connection between the cup cover and the outer cup.

[0014] In some embodiments, the ventilation valve and the inner cup are integrally formed.

[0015] Advantages of the spray bottle of the present invention: Close the air vent valve on the inner cup, then place the inner cup into the outer cup, rotate the inner cup so that the air vent valve screws into the mating hole of the outer cup, pour the paint into the inner cup, then press the cup lid into the inner cup and rotate the cup lid to make it rotatably clamped with the outer cup. During actual use, after installing an adapter matching the spray gun on the cup lid, invert the spray gun, align the adapter port of the spray gun with the mating port of the cup lid and rotate and clamp them tightly, then invert the spray gun again and open the air vent valve to make the inside and outside of the spray bottle communicate with air, which can effectively prevent the uneven flow rate of the paint affected by the negative pressure in the inner cup, ensure that the paint can flow smoothly during use, and reduce the paint residue in the spray bottle. Since the material of the inner cup is usually relatively soft, it is prone to deformation when pressing the air vent valve to close it. Since there is a limiting structure between the air vent valve and the outer cup, and the hardness of the limiting structure is relatively high, when the user presses the air vent valve to fix it to the limiting structure for support, it ensures that the air vent valve can be stably closed. In addition, since the air vent valve can rotate relative to the limiting structure, when rotating the cup lid to make the cup lid rotatably clamped with the outer cup, the entire inner cup and the air vent valve can also stably rotate together with the limiting structure of the outer cup, avoiding the wrinkling phenomenon caused by driving the inner cup to rotate when rotating the cup lid.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the spray bottle according to Embodiment 1 of the present invention;

[0018] Figure 2 is an exploded structural diagram of the spray bottle according to Embodiment 1 of the present invention;

[0019] Figure 3 is a schematic structural diagram of the air vent valve on the inner cup of the present invention when it is closed according to Embodiment 1;

[0020] Figure 4 is a schematic structural diagram of the air vent valve on the inner cup of the present invention when it is open according to Embodiment 1;

[0021] Figure 5 is a schematic structural diagram of the outer cup and the valve seat of the present invention according to Embodiment 1;

[0022] Figure 6 is a schematic structural diagram of the spray bottle according to Embodiment 2 of the present invention;

[0023] Figure 7 is an exploded structural diagram of the spray bottle according to Embodiment 2 of the present invention;

[0024] Figure 8 is a schematic structural diagram of the air vent valve on the inner cup of the present invention when it is closed according to Embodiment 2;

[0025] Figure 9 It is a schematic structural diagram when the ventilation valve on the inner cup in the second embodiment of the present invention is opened;

[0026] Figure 10 It is a schematic structural diagram of the bottom of the outer cup and the inner cup in the second embodiment of the present invention;

[0027] Figure 11 It is a schematic structural diagram of another outer cup of the present invention.

[0028] Reference numerals:

[0029] 100. Outer cup; 110. Fitting hole; 111. Step surface; 120. Second limiting hole; 130. Second limiting protrusion; 140. First rotary clamping structure; 150. Opening;

[0030] 200. Inner cup; 210. Ventilation hole;

[0031] 300. Cup lid; 310. Second rotary clamping structure;

[0032] 400. Ventilation valve; 410. Valve seat; 411. Air flow channel; 412. Card hole; 413. First limiting part; 420. Valve plug; 421. Plunger part; 422. Card convex; 423. Handle part;

[0033] 500. Valve seat; 510. Mounting hole; 520. First limiting hole; 530. First limiting protrusion; 540. Stop protrusion;

[0034] 600. Limiting convex ring; 610. Second limiting part;

[0035] 700. Filter net; 800. Cup plug. Detailed implementation manners

[0036] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings rather than all the structures.

[0037] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", 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 circumstances.

[0038] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operations, 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. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] The present invention discloses a watering can. Referring to Figure 2 and Figure 7 as shown, the watering can of the present invention includes an outer cup 100, an inner cup 200 and a cup cover 300. A mating hole 110 is provided on the bottom wall of the outer cup 100. The inner cup 200 is rotatably installed inside the outer cup 100. An openable and closable air valve 400 is provided at the bottom of the inner cup 200. When the air valve 400 is opened, the inner cup 200 communicates with the external environment. Specifically, when the air valve 400 is opened as Figure 4 and Figure 9 shown, when the air valve 400 is closed, as Figure 3 and Figure 8As shown. A part of the cup lid 300 is inserted into the inner cup 200, and the cup lid 300 is rotationally clamped with the outer cup 100; wherein, a limiting structure is provided between the air vent valve 400 and the outer cup 100, and the air vent valve 400 can rotate relative to the limiting structure. It can be understood that the air vent valve 400 on the inner cup 200 is closed, then the inner cup 200 is placed into the outer cup 100, the inner cup 200 is rotated so that the air vent valve 400 is screwed into the mating hole 110 of the outer cup 100, paint is poured into the inner cup 200, then the cup lid 300 is pressed into the inner cup 200 and the cup lid 300 is rotated to be rotationally clamped with the outer cup 100. During actual use, after an adapter matching the paint spray gun is installed on the cup lid 300, the paint spray gun is inverted, the adapter port of the paint spray gun is docked with the mating port of the cup lid 300 and rotationally clamped, then the paint spray gun is inverted again, and the air vent valve 400 is opened, so that the inside of the spray pot is communicated with the outside air, which can effectively prevent the phenomenon that the flow rate of the paint is uneven due to the negative pressure in the inner cup 200, ensure that the paint can flow smoothly during use, and can reduce the paint residue in the spray pot. Since the material of the inner cup 200 is usually relatively soft, it is easy to deform when pressing the air vent valve 400 to close it. Since a limiting structure is provided between the air vent valve 400 and the outer cup 100, the hardness of the limiting structure is relatively high, and when the user presses the air vent valve 400 to fix it to the limiting structure for support, it ensures that the air vent valve 400 can be stably closed. In addition, since the air vent valve 400 can rotate relative to the limiting structure, when the cup lid 300 is rotated so that the cup lid 300 is rotationally clamped with the outer cup 100, since the limiting structure can rotate relative to the inner cup 200 and the air vent valve 400, and the limiting structure abuts against the outer cup 100, the entire inner cup 200 and the air vent valve 400 can also stably rotate together with the cup lid 300, avoiding the wrinkling phenomenon caused by the rotation of the cup lid 300 driving the inner cup 200 to rotate.

[0040] Reference Figure 3 、 Figure 4 、 Figure 8 and Figure 9As shown in the figure, a ventilation hole 210 is provided at the bottom of the inner cup 200. The ventilation valve 400 includes a valve seat 410 and a valve plug 420. The valve seat 410 is connected to the inner cup 200 and has an air flow channel 411 corresponding to the ventilation hole 210. One end of the valve plug 420 is connected to the valve seat 410, and a plunger portion 421 capable of being inserted into the air flow channel 411 is provided at the other end of the valve plug 420. It can be understood that the valve seat 410 is connected to the inner cup 200 and provided with the air flow channel 411, which can better ensure that when the valve plug 420 is opened, the internal environment of the inner cup 200 is communicated with the external environment, and can prevent external pollutants from directly blocking the ventilation hole 210 at the bottom of the inner cup 200. The plunger portion 421 provided at one end of the valve plug 420 corresponding to the air flow channel 411 can better block the air flow channel 411, so that when storing paint, it can ensure that the internal environment of the inner cup 200 is isolated from the external environment, and prevent the paint in the spray pot from drying out due to long-term contact with air. In addition, one end of the valve plug 420 is directly connected to the valve seat 410, which can prevent the phenomenon that the valve plug 420 of the split ventilation valve 400 is often lost.

[0041] Optionally, the plunger portion 421 is a conical structure. It can be understood that when it is necessary to close the ventilation valve 400, during the process of inserting the plunger portion 421 into the air flow channel 411, the plunger portion 421 formed as a conical structure can, on the one hand, be smoothly and conveniently inserted into the air flow channel 411, and on the other hand, can stably block the air flow channel 411, ensuring that when storing paint, the internal environment of the inner cup 200 is isolated from the external environment, and preventing the paint in the spray pot from drying out due to long-term contact with air.

[0042] Optionally, the ventilation valve 400 and the inner cup 200 are integrally formed. Thus, it can ensure the connection stability and connection sealing performance between the ventilation valve 400 and the inner cup 200. It avoids the phenomenon that the internal environment of the inner cup 200 is in long-term communication with the external environment due to the poor sealing at the connection between the ventilation valve 400 and the inner cup 200, resulting in the drying of the paint. It should be noted that in this embodiment, the ventilation valve 400 can be fixed on the bottom wall of the inner cup 200 by welding connection or by bonding connection and other methods. In addition, it should be additionally noted that in other embodiments of the present invention, it can also be fixed on the inner cup 200 by other methods such as riveting, and is not limited to the above description. The materials of the ventilation valve 400 and the inner cup 200 can be selected according to actual needs, and the materials of the ventilation valve 400 and the inner cup 200 are not limited herein.

[0043] Optionally, a filter screen 700 is further provided inside the inner cup 200, which can filter the paint during the outflow process of the paint for convenient use. The material of the filter screen 700, the filtration mesh number, and the installation method with the inner cup 200 are all prior arts, and the above parameters are not specifically described herein.

[0044] ReferenceFigure 1 and Figure 6 As shown in Figure 6 , a first rotary clamping structure 140 is provided on the outer peripheral wall of the outer cup 100, and a second rotary clamping structure 310 is provided at the edge of the cup lid 300. The first rotary clamping structure 140 is configured to be rotatably engaged with the second rotary clamping structure 310 to achieve the clamping connection between the cup lid 300 and the outer cup 100. It can be understood that during specific assembly, the cup lid 300 is screwed to rotatably cooperate with the first rotary clamping structure 140 and the second rotary clamping structure 310 to achieve the purpose of clamping connection between the cup lid 300 and the outer cup 100. Through the above settings, the cup lid 300 and the outer cup 100 can complete the sealed connection without the help of clamping structures such as snap rings, thus eliminating the setting of redundant clamping structures such as snap rings, reducing the use of additional complex or redundant components required during the assembly of the cup lid 300 and the outer cup 100, making the structure of the entire sprayer simpler and the disassembly and assembly more convenient. At the same time, it can also ensure the reliable stability of the connection between the outer cup 100 and the cup lid 300, thereby greatly improving the user experience. Further optionally, the first rotary clamping structure 140 is a slot open at one end, and the second rotary clamping structure 310 is a convex that can be inserted into the slot. During the actual working process, during the rotation of the cup lid 300, the convex can be inserted into the slot from the open end of the slot to complete the clamping connection between the cup lid 300 and the outer cup 100.

[0045] Optionally, both the first rotary clamping structure 140 and the second rotary clamping structure 310 are multiple and are circumferentially spaced along the outer cup 100. During the actual rotation, the multiple second rotary clamping structures 310 can be correspondingly inserted into the multiple first rotary clamping structures 140 one by one. Thereby, the clamping stability between the cup lid 300 and the outer cup 100 can be improved, ensuring that the inside of the entire sprayer is in a relatively sealed state after the cup lid 300 is covered. On the one hand, it can prevent external pollutants from contaminating the paint, and on the other hand, it can prevent the paint in the sprayer from drying out due to long-term contact with air.

[0046] Optionally, a plurality of wrench structures (not shown in the figure) are arranged circumferentially on the end face of the cup lid 300 in a vertical posture. The operator can improve the convenience of rotating the cup lid 300 relative to the outer cup 100 through the wrench structures, thereby enhancing the grasping feeling of the cup lid 300, making it easier to operate, making the overall structure of the sprayer simpler and more practical. One implementation manner of this embodiment is that a wrench structure is arranged circumferentially on the end face of the cup lid 300.

[0047] Furthermore, the wrench structure is fixedly connected to the cup lid 300 by an integral molding method, which helps to improve the structural strength of the wrench structure and enhance the stability and durability of the cup lid 300.

[0048] Optionally, a cylindrical liquid outlet is protruding from the top of the cup cover 300. After the cup cover 300 is screwed onto the outer cup 100 and the cup cover 300, the outer cup 100 and the inner cup 200 are assembled, the liquid outlet can be connected to the internal space of the inner cup 200, so that when the cup cover 300 and the spray nozzle are assembled together through a connection structure such as an adapter, the paint stored in the inner cup 200 can be transported to the spray nozzle through the liquid outlet and the adapter, and then sprayed by the spray nozzle onto the surface to be sprayed, thereby achieving the purpose of using the spray pot on a spray gun. Furthermore, the spray pot also includes a cup plug 800. When the inner cup 200 stores a sufficient amount of paint, the cup cover 300 is screwed onto the outer cup 100, and then the liquid outlet on the cup cover 300 is blocked by the cup plug 800 to prevent the paint from leaking outward and drying, and also facilitate the storage and transportation of unused paint. When in use, the cup plug 800 is pulled out, and the spray pot is connected to a connecting structure such as an adapter through the liquid outlet on the cup cover 300.

[0049] According to the different limiting structures, the spray pot of the present invention has two different structures, and the two structures are described in detail below with reference to the accompanying drawings.

[0050] Embodiment 1:

[0051] refer to Figures 1 - 5 As shown, the limiting structure of this embodiment includes a valve seat 500, which is installed in the matching hole 110. The valve seat 500 is provided with a mounting hole 510 corresponding to the matching hole 110 and a first limiting hole 520 connected to the mounting hole 510. The ventilation valve 400 is provided with a first limiting portion 413, which can be inserted into the first limiting hole 520. It is understandable that in the actual assembly process, the inner cup 200 is installed inside the outer cup 100, and the first limiting portion 413 is inserted into the first limiting hole 520, and then part of the cup cover 300 is inserted into the inner cup 200. When the cup cover 300 is rotated to rotate and clamp it with the outer cup 100, the inner cup 200 and the vent valve 400 can rotate relative to the valve seat 500, and the valve seat 500 stops at the outer cup 100. The entire inner cup 200 and the vent valve 400 can also rotate with the cup cover 300, thereby avoiding wrinkles caused by the rotating cup cover 300 driving the inner cup 200 to rotate. Furthermore, during the rotation process, the first limiting portion 413 rotates from a position directly opposite to the first limiting hole 520 to a staggered position, and stops on the side wall of the valve seat 500 away from the inner part of the outer cup 100. The first limiting portion 413 on the vent valve 400 stops on the valve seat 500. The hardness of the valve seat 500 is relatively high. When the user presses the valve plug 420 to fix it to the valve seat 410 for support, it ensures that the vent valve 400 can be stably closed.

[0052] Optional, reference Figure 5As shown, the valve seat 500 is further provided with first limiting protrusions 530 spaced along its circumferential direction. It can be understood that during the actual working process, when the inner cup 200 rotates by rotating the cup lid 300, when the first limiting portion 413 abuts against the first limiting protrusion 530, and the cup lid 300 is continuously rotated, the inner cup 200, the ventilation valve 400, and the valve seat 500 will rotate synchronously, ensuring that the first limiting portion 413 on the ventilation valve 400 abuts against the valve seat 500. When the user presses the valve plug 420 to fix it to the valve seat 410 for support, it ensures that the ventilation valve 400 can be stably closed. In this embodiment, there are two first limiting protrusions 530, which are formed by ribs integrally formed on the valve seat 500. On the one hand, it can simplify the structure of the valve seat 500 and facilitate the manufacture of the valve seat 500.

[0053] Optionally, the first limiting portion 413 is of a sector structure, and the first limiting hole 520 is a sector hole. Of course, in other embodiments of the present invention, the shapes and numbers of the first limiting portion 413 and the first limiting hole 520 can be adjusted according to actual needs and are not limited to the above limitations.

[0054] Optionally, referring to Figure 5 As shown, the mating hole 110 has a stepped surface 111, and the outer side wall of the valve seat 500 is provided with a plurality of abutting protrusions 540 spaced along its circumferential direction, and the plurality of abutting protrusions 540 respectively abut against the stepped surface 111. It can be understood that by providing the stepped surface 111 on the mating hole 110 and providing the abutting protrusions 540 on the valve seat 500, the connection stability between the valve seat 500 and the outer cup 100 can be ensured, thereby ensuring the stable clamping of the valve seat 500 to the ventilation valve 400.

[0055] Optionally, referring to Figure 5 As shown, a clamping hole 412 is provided on the outer peripheral wall of the valve seat 410, and a clamping protrusion 422 mating with the clamping hole 412 is provided at one end of the valve plug 420 where the plunger portion 421 is provided. It can be understood that when it is necessary to close the ventilation valve 400, while inserting the plunger portion 421 of the valve plug 420 into the air flow channel 411, the clamping protrusion 422 is clamped into the clamping hole 412, which can ensure the connection stability between the valve plug 420 and the valve seat 410. The double fixation can greatly reduce the probability of accidental detachment of the valve plug 420, thereby ensuring that the valve plug 420 is tightly fixed on the valve seat 410 when it is necessary to close the ventilation valve 400, and ensuring the isolation of the internal environment of the inner cup 200 from the external environment. Of course, in an alternative embodiment, a clamping hole 412 is provided at one end of the valve plug 420 where the plunger portion 421 is provided, and a clamping protrusion 422 mating with the clamping hole 412 is provided on the other outer peripheral wall of the valve seat 410.

[0056] Optionally, one end of the valve plug 420 provided with the plunger portion 421 is provided with a handle portion 423, and the handle portion 423 is provided with a convex rib. During the actual working process, the operator can pull out the valve plug 420 through the handle portion 423, and the operation is very convenient.

[0057] Embodiment 2:

[0058] Reference Figures 6 - 10 As shown, a plurality of second limiting holes 120 are provided at the bottom of the outer cup 100, which are arranged at intervals in the circumferential direction of the fitting hole 110 and communicate with the fitting hole 110. The limiting structure includes a limiting convex ring 600, and at least one second limiting portion 610 is provided on the limiting convex ring 600. The limiting convex ring 600 is sleeved on the ventilation valve 400 and can rotate relative to the ventilation valve 400. It can be understood that during the actual assembly process, the inner cup 200 is installed inside the outer cup 100, and the second limiting portion 610 is inserted into the second limiting hole 120. Then, a part of the cup cover 300 is inserted into the inner cup 200. When the cup cover 300 is rotated to be rotationally clamped with the outer cup 100, since the limiting convex ring 600 can rotate relative to the inner cup 200 and the ventilation valve 400, and the limiting convex ring 600 abuts against the outer cup 100, the entire inner cup 200 and the ventilation valve 400 can also stably rotate together with the cup cover 300, avoiding the wrinkling phenomenon caused by the rotation of the cup cover 300 driving the inner cup 200 to rotate. And, during the rotation process, the second limiting portion 610 rotates from a position opposite to the second limiting hole 120 to a staggered position and abuts against the bottom wall of the outer cup 100. The second limiting portion 610 on the limiting convex ring 600 abuts against the bottom wall of the outer cup 100. The hardness of the bottom wall of the outer cup 100 is relatively high, which provides support when the user presses the valve plug 420 to fix it to the valve seat 410, ensuring that the ventilation valve 400 can be stably closed.

[0059] Optionally, reference Figure 10As shown, at least one second limiting protrusion 130 is provided on the bottom wall of the outer cup 100; the second limiting portion 610 can stop against the second limiting protrusion 130. It can be understood that in the actual working process, when the cup cover 300 is rotated to rotate the inner cup 200, when the first end of the second limiting portion 610 stops against the first side wall of the second limiting protrusion 130, the cup cover 300 cannot be rotated further, and when the second end of the second limiting portion 610 stops against the second side wall of the second limiting protrusion 130, the second limiting portion 610 can face the second limiting hole 120, so that the inner cup 200 can be taken out of the outer cup 100. Further optionally, in this embodiment, there are three second limiting portions 610, and there are also three second limiting holes 120, and they are evenly spaced and distributed along the circumference of the matching hole 110. The cooperation of the plurality of second limiting portions 610 and the plurality of second limiting holes 120 can ensure the stability of the inner cup 200 in the locked position, thereby ensuring the reliability of the use of the spray pot. In this embodiment, the second limiting portion 610 is a fan-shaped protrusion, and the second limiting hole 120 is a fan-shaped hole. Of course, in other embodiments of the present invention, the number and shape of the second limiting portion 610 and the second limiting hole 120 can be selected according to actual needs, and are not limited to the above limitations.

[0060] refer to Figure 11 As shown, the outer cup 100 in the first and second embodiments can also be Figure 11 In the structure shown, an opening 150 is provided on the outer cup 100. In actual operation, the operator can press the inner cup 200 through the opening 150, further reducing the amount of paint residue.

[0061] The advantages of the watering can of the present invention are as follows:

[0062] First, the ventilation valve 400 can ensure good fluidity of the spray pot, and can effectively prevent uneven flow of paint due to poor exhaust.

[0063] Second, the adapter that matches the cup cover 300 can ensure that the spray pot can be quickly, simply and reliably connected to the spray gun, and it is easy to disassemble and assemble;

[0064] Third, the cup cover 300 and the outer cup 100 are connected by the rotation of the first rotating clamping structure 140 and the second rotating clamping structure 310, which reduces the use of additional complex or redundant parts required for assembling the cup cover 300 and the outer cup 100, making the structure of the entire spray pot simpler and more convenient to disassemble and assemble;

[0065] Fourthly, by providing a limiting convex ring 600 on the ventilation valve 400 or a valve seat 500 at the bottom of the outer cup 100, a limiting structure for restricting the inner cup 200 is formed between the ventilation valve 400 and the outer cup 100 (the first limiting hole 520 and the first limiting portion 413 constitute the limiting structure). On the one hand, when the user presses the valve plug 420 to fix it to the valve seat 410 for support, it ensures that the ventilation valve 400 can be stably closed; on the other hand, it can enable the inner cup 200 and the ventilation valve 400 to rotate synchronously with the cup lid 300, avoiding the phenomenon of wrinkles on the inner cup 200 during the rotation of the cup lid 300.

[0066] In the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0067] Obviously, the above embodiments of the present invention are merely examples given for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A watering can, characterized in that, It includes an outer cup (100), an inner cup (200) and a cup lid (300). A mating hole (110) is provided on the bottom wall of the outer cup (100). The inner cup (200) is rotatably installed inside the outer cup (100). An openable and closable air vent valve (400) is provided at the bottom of the inner cup (200). When the air vent valve (400) is opened, the inner cup (200) is in communication with the external environment. A part of the cup lid (300) is inserted into the inner cup (200), and the cup lid (300) is rotationally clamped with the outer cup (100). Wherein, a limiting structure is provided between the air vent valve (400) and the outer cup (100), and the air vent valve (400) can rotate relative to the limiting structure.

2. The watering can according to claim 1, characterized in that, An air vent hole (210) is provided at the bottom of the inner cup (200), and the air vent valve (400) includes: A valve seat (410), the valve seat (410) is connected to the inner cup (200) and has an air flow channel (411) corresponding to the air vent hole (210). A valve plug (420), one end of the valve plug (420) is connected to the valve seat (410), and a plunger portion (421) capable of inserting into the air flow channel (411) is provided at the other end of the valve plug (420).

3. The watering can according to claim 2, characterized in that, A clamping hole (412) is provided on one of the outer peripheral walls of the valve seat (410) at the end of the valve plug (420) provided with the plunger portion (421), and a clamping protrusion (422) cooperating with the clamping hole (412) is provided on the other of the outer peripheral walls of the valve seat (410) at the end of the valve plug (420) provided with the plunger portion (421).

4. The watering can according to any one of claims 1 to 3, characterized in that The limiting structure includes a valve seat (500), the valve seat (500) is installed in the mating hole (110), an installation hole (510) corresponding to the mating hole (110) and a first limiting hole (520) communicating with the installation hole (510) are provided on the valve seat (500), and a first limiting portion (413) is provided on the air vent valve (400), and the first limiting portion (413) can be inserted into the first limiting hole (520).

5. The watering can according to claim 4, characterized in that, A plurality of first limiting protrusions (530) are also provided on the valve seat (500) at intervals along its circumferential direction, and the first limiting portion (413) can abut against the first limiting protrusions (530).

6. The watering can according to claim 4, characterized in that, The mating hole (110) has a stepped surface (111), and a plurality of abutting protrusions (540) are provided on the outer side wall of the valve seat (500) at intervals along its circumference, and the plurality of abutting protrusions (540) respectively abut against the stepped surface (111).

7. The watering can according to any one of claims 1 to 3, characterized in that A plurality of second limiting holes (120) are provided at the bottom of the outer cup (100) at intervals along the circumference of the mating hole (110) and communicating with the mating hole (110). The limiting structure includes a limiting convex ring (600), at least one second limiting portion (610) is provided on the limiting convex ring (600), the limiting convex ring (600) is sleeved on the air vent valve (400) and can rotate relative to the air vent valve (400).

8. The watering can according to claim 7, characterized in that, At least one second limiting protrusion (130) is provided on the bottom wall of the outer cup (100), and the second limiting portion (610) can abut against the second limiting protrusion (130).

9. The watering can according to any one of claims 1 to 3, characterized in that A first rotary snap structure (140) is provided on the outer peripheral wall of the outer cup (100), and a second rotary snap structure (310) is provided at the edge of the cup lid (300). The first rotary snap structure (140) is configured to be rotatably engaged with the second rotary snap structure (310) to achieve the snap connection between the cup lid (300) and the outer cup (100).

10. The watering can according to any one of claims 1 to 3, characterized in that, The ventilation valve (400) and the inner cup (200) are integrally formed parts.

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