A fluid sprayer

Abstract

The utility model belongs to fluid spray can technical field discloses a fluid spray can, and the fluid spray can includes outer cup, inner cup and cup cover, the bottom of outer cup has the mounting hole of through arrangement, the side wall of mounting hole has the support part, the bottom wall of outer cup still is equipped with the limit bulge, the bottom of inner cup is provided with the vent hole, and has the openable and closable vent valve of setting up corresponding vent hole, is equipped with the stop portion on vent valve. Inner cup installs to outer cup to make vent valve set up through mounting hole, after inner cup rotates along first direction, stop portion can stop and reach limit bulge, the part of cup cover inserts into inner cup and can be relatively outer cup after rotating along second direction and clamps tightly, the bottom of stop portion supports support part, and first direction and second direction are opposite. Fluid spray can can better ensure that paint flows outwards smoothly, and the paint remaining in the fluid spray can is relatively less, and can also avoid the phenomenon of inner cup wrinkle.

Description

Technical Field

[0001] This utility model relates to the field of fluid spray bottle technology, and in particular to a fluid spray bottle. Background Technology

[0002] Liquid spray guns are commonly used to apply coatings such as dyes, primers, paints, and sealants to surfaces. Among known spray guns, the fluid spray bottle is the container used to hold the liquid during spraying, and it is used in conjunction with a spray nozzle. Existing fluid spray bottles are typically used inverted. Due to the relatively sealed interior of the fluid spray bottle, paint flow can be obstructed during actual operation, leading to excessive paint residue inside the bottle. Furthermore, existing fluid spray bottles usually consist of an inner cup, an outer cup, and a lid. When rotating the lid, the upper part of the inner cup rotates with the lid, while the lower part remains fixed relative to the outer cup, resulting in wrinkles caused by rotating the inner cup as the lid rotates. Utility Model Content

[0003] The purpose of this invention is to provide a fluid spray bottle that can ensure paint flows out smoothly, with relatively little paint residue inside the bottle, and can also prevent wrinkles in the inner cup.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model discloses a fluid spray bottle, including an outer cup, an inner cup, and a lid. The bottom of the outer cup has a through mounting hole, and the side wall of the mounting hole has a support portion. The bottom wall of the outer cup also has a limiting protrusion. The bottom of the inner cup has a vent hole and an openable vent valve corresponding to the vent hole. The vent valve has a stop portion. The inner cup is installed onto the outer cup such that the vent valve passes through the mounting hole. After the inner cup rotates in a first direction, the stop portion can abut against the limiting protrusion. The lid is inserted into the inner cup and can be locked relative to the outer cup after rotating in a second direction. The bottom of the stop portion is supported by the support portion. The first direction and the second direction are opposite.

[0006] In some embodiments, there are two limiting protrusions, which are arranged in parallel and located on both sides of the mounting hole, and there are two stop portions, which are arranged symmetrically about the axis of the vent valve.

[0007] In some embodiments, the stop portion is formed on the outer peripheral wall of the vent valve, and the stop portion has a stop groove. When the inner cup is rotated in the first direction, the end of the limiting protrusion can extend into the stop groove, and the side wall of the limiting protrusion can abut against the side wall of the stop groove.

[0008] In some embodiments, the projection of the support portion along the height direction of the outer cup overlaps with the projection of the limiting protrusion along the height direction of the outer cup.

[0009] In some embodiments, the vent valve and the inner cup are integrally formed.

[0010] In some embodiments, the vent valve includes: a valve seat, which is mounted on the bottom of the inner cup and has an airflow passage communicating with the vent hole; and a valve cover, one end of which is connected to the valve seat and the other end of which has a blocking portion that blocks the airflow passage.

[0011] In some specific embodiments, the valve seat has a groove formed on the surface opposite to the inner cup, a plug-in cylinder is provided in the groove, the plug-in cylinder has a plug-in hole, the airflow channel is formed on the bottom wall of the plug-in hole, the valve cover also includes a plug-in part that can be inserted into the plug-in hole, and the sealing part is connected to the plug-in part.

[0012] In some more specific embodiments, the outer wall of the plug-in cylinder and the inner wall of the groove have a plurality of reinforcing ribs, which are spaced apart circumferentially along the plug-in cylinder.

[0013] In some specific embodiments, a locking protrusion is provided on one of the outer side wall of the valve seat and the other end of the valve cover, and a locking groove that mates with the locking protrusion is provided on the other of the outer side wall of the valve seat and the other end of the valve cover.

[0014] In some embodiments, the outer peripheral wall of the outer cup is provided with a first rotating snap-fit ​​part, the first rotating snap-fit ​​part having a snap-fit ​​groove, one end of the snap-fit ​​groove being open, and the edge of the cup lid being provided with a second rotating snap-fit ​​part. When the cup lid rotates along the second direction, the second rotating snap-fit ​​part can be inserted into the snap-fit ​​groove from the open end of the snap-fit ​​groove to achieve snap-fit ​​between the cup lid and the outer cup.

[0015] The beneficial effects of this fluid spray bottle are as follows: In actual use, after installing the adapter matching the spray gun on the cup lid, the spray gun is inverted so that the adapter port of the spray gun aligns with the fitting port of the cup lid and is rotated and locked. Then, the spray gun is reversed to open the vent valve, allowing the inside of the fluid spray bottle to communicate with the outside air. This effectively prevents uneven paint flow caused by negative pressure in the inner cup, ensuring smooth paint flow during use and reducing paint residue in the fluid spray bottle. Since the material of the inner cup is usually relatively soft, it is prone to deformation when the vent valve is pressed to close. However, after the cup lid is locked, the bottom of the stop rests against the support part. The support part is part of the outer cup and has relatively high rigidity. When the user presses the vent valve, the support part provides support, preventing deformation of the outer cup and ensuring that the vent valve can be stably closed. Furthermore, when the inner cup is rotated in the first direction, the vent valve passes through the mounting hole, and the upper vent valve of the inner cup can also rotate relative to the mounting hole. When the cup lid is rotated in the second direction, the vent valve passes through the mounting hole and is supported by the support part, and the entire inner cup and vent valve can also rotate stably with the cup lid, avoiding the wrinkling phenomenon caused by rotating the cup lid and causing the inner cup to rotate.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of the fluid spray bottle according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the fluid spray bottle according to an embodiment of the present invention when the inner cup is inserted into the outer cup;

[0019] Figure 3 yes Figure 2 The center circle shows an enlarged view of point A;

[0020] Figure 4 yes Figure 2 A schematic diagram of the structure after the inner cup is rotated along the first direction;

[0021] Figure 5 yes Figure 4 The enlarged diagram at point B is shown in the middle circle;

[0022] Figure 6 This is a schematic diagram of the structure of the fluid spray bottle lid fastened to the outer cup according to an embodiment of the present invention;

[0023] Figure 7 yes Figure 6 The diagram shows the structure of the cup lid after it has been rotated in the second direction.

[0024] Figure 8 yes Figure 7 A schematic diagram of the structure shown in the diagram when the vent valve is open;

[0025] Figure 9 yes Figure 8 The enlarged diagram at point C is shown in the middle circle.

[0026] Figure label:

[0027] 100. Outer cup; 110. Mounting hole; 120. Support part; 130. Limiting protrusion; 140. First rotating snap-fit ​​part;

[0028] 200, Inner Cup;

[0029] 300. Cup lid; 310. Second rotating locking part;

[0030] 400. Vent valve; 410. Valve seat; 411. Stop part; 4111. Stop groove; 4112. Slot; 412. Groove; 413. Insert sleeve; 4131. Insert hole; 4132. Airflow channel; 414. Reinforcing rib; 420. Valve cover; 421. Sealing part; 422. Insert part; 423. Handle part; 4231. Protrusion;

[0031] 500, filter screen; 600, cup stopper. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] This utility model discloses a fluid spray bottle, referenced... Figures 1-3 As shown, the fluid spray bottle includes an outer cup 100, an inner cup 200, and a lid 300. The bottom of the outer cup 100 has a through mounting hole 110, and the side wall of the mounting hole 110 has a support portion 120. The bottom wall of the outer cup 100 also has a limiting protrusion 130. The bottom of the inner cup 200 has a vent hole and a corresponding openable / closable vent valve 400. The vent valve 400 has a stop portion 411. The inner cup 200 is installed onto the outer cup 100 such that the vent valve 400 passes through the mounting hole 110. (Reference) Figures 4-5 As shown, after the inner cup 200 rotates along the first direction (clockwise in this embodiment), the stop portion 411 can abut against the limiting protrusion 130. (Reference) Figures 6-7 As shown, the lid 300 is partially inserted into the inner cup 200 and, after rotating in the second direction (counterclockwise in this embodiment), can lock into place relative to the outer cup 100. (Reference) Figures 8-9As shown, the bottom of the stop portion 411 is supported by the support portion 120, with the first direction and the second direction being opposite. Understandably, during actual assembly, after the vent valve 400 is closed, the inner cup 200 is inserted into the outer cup 100, and the vent valve 400 passes through the mounting hole 110. Then, the inner cup 200 is rotated in the first direction until the stop part 411 abuts against the limiting protrusion 130, at which point the rotation stops. Paint is then poured into the inner cup 200, and the cup lid 300 is pressed into the inner cup 200 and rotated in the second direction until the cup lid 300 is locked relative to the outer cup 100. In actual use, after installing the adapter that matches the spray gun on the cup lid 300, the spray gun is inverted so that the adapter port of the spray gun aligns with the adapter port of the cup lid 300 and is rotated to lock. Then, the spray gun is inverted again, and the vent valve 400 is opened, allowing the inside of the fluid spray bottle to communicate with the outside air. This effectively prevents the uneven flow rate of paint caused by the negative pressure of the inner cup 200, ensuring that the paint can flow out smoothly during use and reducing the amount of paint residue in the fluid spray bottle. Since the inner cup 200 is usually made of a softer material, it is easy to deform when the vent valve 400 is pressed to close it. However, in this embodiment, after the cup lid 300 is locked, the bottom of the stop part 411 abuts against the support part 120. The support part 120 is part of the outer cup 100 and has relatively high hardness. When the user presses the vent valve 400, the support part 120 provides support, avoiding the deformation of the outer cup 100, thereby ensuring that the vent valve 400 can be closed stably. Furthermore, when the inner cup 200 is rotated in the first direction, since the vent valve 400 passes through the mounting hole 110, the upper vent valve 400 of the inner cup 200 can also rotate relative to the mounting hole 110. When the cup lid 300 is rotated in the second direction, since the vent valve 400 passes through the mounting hole 110 and is supported by the support part 120, the entire inner cup 200 and the vent valve 400 can also stably rotate together with the cup lid 300, avoiding the wrinkling phenomenon caused by rotating the cup lid 300 and driving the inner cup 200 to rotate.

[0036] It should be noted that in alternative embodiments of this utility model, the first direction may also be counterclockwise and the second direction may also be clockwise, and is not limited to the above description.

[0037] refer to Figure 1 As shown, the inner cup 200 is also equipped with a filter screen 500, which can filter the paint during the paint flow process for convenient use. The material, mesh size, and installation method of the filter screen 500 and the inner cup 200 are all existing technologies, and the above parameters will not be described in detail here.

[0038] refer to Figure 3As shown, there are two limiting protrusions 130, which are arranged in parallel and located on both sides of the mounting hole 110. There are also two stop portions 411, which are symmetrically arranged about the axis of the vent valve 400. Understandably, during actual assembly, after rotating the inner cup 200 in the first direction, the two stop portions 411 abut against the two limiting protrusions 130, and further rotation of the inner cup 200 will encounter significant resistance, thus indicating to the user that the inner cup has been rotated to the correct position, which improves the user experience. Furthermore, after inserting the cup lid 300 into the inner cup 200 and rotating the cup lid 300 in the second direction, both stop portions 411 abut against the support portion 120, and both sides of the vent valve 400 are supported by the support portion 120, making it convenient for the user to press the vent valve 400 to close it.

[0039] refer to Figures 4-5 As shown, the stop portion 411 is formed on the outer peripheral wall of the vent valve 400, and the stop portion 411 has a stop groove 4111. When the inner cup 200 is rotated in the first direction, the end of the limiting protrusion 130 can extend into the stop groove 4111, and the side wall of the limiting protrusion 130 can abut against the side wall of the stop groove 4111. It can be understood that the stop portion 411 is formed on the outer peripheral wall of the vent valve 400 for ease of manufacturing. The end of the limiting protrusion 130 extends into the stop groove 4111. During the rotation of the inner cup 200, after the end of the limiting protrusion 130 enters the stop groove 4111, the stop groove 4111 plays a guiding and fixing role, which can ensure that the inner cup 200 can rotate stably.

[0040] Optionally, the projection of the support portion 120 along the height direction of the outer cup 100 overlaps with the projection of the limiting protrusion 130 along the height direction of the outer cup 100. Thus, when the stop portion 411 abuts against the limiting protrusion 130, the bottom of the stop portion 411 is also partially supported on the support portion 120, ensuring that the vent valve 400 can be stably supported on the support portion 120. During the rotation of the cup lid 300, the vent valve 400 and the inner cup 200 can stably rotate with the cup lid 300, thereby preventing wrinkles in the inner cup 200.

[0041] Optionally, the vent valve 400 and the inner cup 200 are integrally molded. This ensures the stability and sealing of the connection between the vent valve 400 and the inner cup 200, preventing paint drying caused by prolonged contact between the internal and external environments of the inner cup 200 due to poor sealing at the connection point. It should be noted that in this embodiment, the vent valve 400 can be fixed to the bottom wall of the inner cup 200 by welding or adhesive bonding. Furthermore, it should be noted that in other embodiments of this invention, it can also be fixed to the inner cup 200 by riveting or other methods, and is not limited to the above description. The materials of the vent valve 400 and the inner cup 200 can be selected according to actual needs, and the materials of the vent valve 400 and the inner cup 200 are not limited here.

[0042] refer to Figure 9 As shown, the vent valve 400 includes a valve seat 410 and a valve cover 420. The valve seat 410 is installed at the bottom of the inner cup 200 and has an airflow channel 4132 communicating with the vent. One end of the valve cover 420 is connected to the valve seat 410, and the other end has a sealing part 421 that blocks the airflow channel 4132. The valve seat 410 is connected to the inner cup 200 and has an airflow channel 4132, which effectively ensures that the internal environment of the inner cup 200 is connected to the external environment when the valve cover 420 is open, and prevents external contaminants from directly clogging the vent at the bottom of the inner cup 200. The sealing part 421 at one end of the valve cover 420, corresponding to the airflow channel 4132, effectively blocks the airflow channel 4132, thus ensuring that the internal environment of the inner cup 200 is isolated from the external environment when storing paint, preventing the paint in the spray bottle from drying out due to prolonged contact with air. In addition, one end of the valve cover 420 is directly connected to the valve seat 410, which avoids the phenomenon of valve cover 420 being lost, which often occurs in split-type vent valves.

[0043] Optionally, the sealing part 421 has a conical structure. It is understood that when the vent valve 400 needs to be closed, during the process of inserting the sealing part 421 into the airflow channel 4132, the conical structure of the sealing part 421 allows for smooth and convenient insertion into the airflow channel 4132, while also stably sealing the airflow channel 4132. This ensures that the internal environment of the inner cup 200 is isolated from the external environment when storing paint, preventing the paint in the spray bottle from drying out due to prolonged contact with air.

[0044] Optional, see reference Figure 9As shown, a groove 412 is formed on the surface of the valve seat 410 opposite to the inner cup 200. A plug-in sleeve 413 is disposed in the groove 412. The plug-in sleeve 413 has a plug-in hole 4131. An airflow channel 4132 is formed on the bottom wall of the plug-in hole 4131. The valve cover 420 also includes a plug-in part 422 that can be inserted into the plug-in hole 4131. A sealing part 421 is connected to the plug-in part 422. It can be understood that by providing a plug-in sleeve 413 on the valve seat 410 and a plug-in part 422 on the valve cover 420, when the vent valve 400 is closed and the valve cover 420 is fastened to the valve seat 410, the plug-in part 422 is inserted into the plug-in hole 4131, and the sealing part 421 is inserted into the airflow channel 4132. This double-sealed structure helps to ensure that the internal environment of the inner cup 200 is isolated from the external environment when storing paint, preventing the paint in the fluid spray bottle from drying out due to prolonged contact with air.

[0045] Further optional, see reference Figure 9 As shown, multiple reinforcing ribs 414 are provided between the outer wall of the plug-in cylinder 413 and the inner wall of the groove 412, and the multiple reinforcing ribs 414 are arranged at intervals along the circumference of the plug-in cylinder 413. It can be understood that the added reinforcing ribs 414 can improve the strength of the entire vent valve 400 and reduce the deformation of the vent valve 400 under the action of external force, thereby ensuring that the vent valve 400 can be stably kept in the closed state even when subjected to external force after the sealing part 421 is inserted into the airflow channel 4132, and ensuring that the internal environment of the inner cup 200 is isolated from the external environment when storing paint.

[0046] Optional, see reference Figure 9 As shown, a locking protrusion 4231 is provided at the upper center of the other end of the valve cover 420, and a locking groove 4112 is provided on the outer side wall of the valve seat 410 to engage with the locking protrusion 4231. It can be understood that when the vent valve 400 needs to be closed, inserting the sealing part 421 of the valve cover 420 into the airflow channel 4132 while simultaneously engaging the locking protrusion 4231 into the locking groove 4112 ensures the connection stability between the valve cover 420 and the valve seat 410. This double fixation greatly reduces the probability of the valve cover 420 accidentally dislodging, thus ensuring that the valve cover 420 is tightly fixed to the valve seat 410 when the vent valve 400 needs to be closed, ensuring that the internal environment of the inner cup 200 is isolated from the external environment. Alternatively, in an alternative embodiment, a locking groove 4112 is provided at the other end of the valve cover 420, and a locking protrusion 4231 that engages with the locking groove 4112 is provided on the outer peripheral wall of the valve seat 410.

[0047] Optional, see reference Figure 9 As shown, the other end of the valve cover 420 is provided with a handle 423, and the handle 423 is provided with a protruding ridge. In actual operation, the operator can pull out the valve cover 420 through the handle 423, which is very convenient.

[0048] Optional, see reference Figures 6-7 As shown, the outer cup 100 has a first rotating snap-fit ​​part 140 on its outer peripheral wall. The first rotating snap-fit ​​part 140 has a snap-fit ​​groove, one end of which is open. The edge of the cup lid 300 has a second rotating snap-fit ​​part 310. When the cup lid 300 rotates in the second direction, the second rotating snap-fit ​​part 310 can be inserted into the snap-fit ​​groove from the open end of the snap-fit ​​groove to achieve snap-fit ​​between the cup lid 300 and the outer cup 100. Understandably, during actual assembly, after inserting the cup lid 300 into the interior, it is only necessary to rotate the cup lid 300 in the second direction so that the second rotating snap-fit ​​part 310 is inserted into the snap-fit ​​groove from the open end of the snap-fit ​​groove, thereby completing the locking of the cup lid 300 relative to the outer cup 100. This allows the cup lid 300 and the outer cup 100 to achieve a sealed connection without the aid of snap-fit ​​structures such as snap rings, thus eliminating the need for redundant snap-fit ​​structures such as snap rings. This reduces the use of additional complex or redundant parts required when assembling the cup lid 300 and the outer cup 100, making the structure of the entire fluid spray bottle simpler and easier to assemble and disassemble, while also ensuring the reliable and stable connection between the outer cup 100 and the cup lid 300.

[0049] Optionally, there are multiple first rotating locking portions 140 and multiple second rotating locking portions 310, distributed at intervals along the circumference of the outer cup 100. During actual rotation, the multiple second rotating locking portions 310 can be engaged one-to-one with the multiple first rotating locking portions 140. This improves the locking stability between the cup lid 300 and the outer cup 100, ensuring that the entire interior of the spray bottle is relatively sealed after the cup lid 300 is closed. This prevents external contaminants from contaminating the paint and also prevents the paint inside the spray bottle from drying out due to prolonged contact with air.

[0050] Optional, see reference Figure 1 As shown, the top of the cup lid 300 has a protruding cylindrical liquid outlet. After the cup lid 300 is screwed onto the outer cup 100, completing the assembly of the cup lid 300, outer cup 100, and inner cup 200, the liquid outlet can communicate with the internal space of the inner cup 200. This allows the paint stored in the inner cup 200 to be transported to the spray nozzle via the liquid outlet and the adapter after the cup lid 300 and the spray nozzle are assembled together through an adapter or other connecting structure. The paint is then sprayed onto the surface to be painted, thus achieving the purpose of using a fluid spray bottle on a spray gun. Furthermore, the fluid spray bottle also includes a cup stopper 600. When the inner cup 200 stores sufficient paint, the cup lid 300 is screwed onto the outer cup 100, and then the liquid outlet on the cup lid 300 is blocked by the cup stopper 600 to prevent paint leakage and drying, and also to facilitate the storage and handling of unused paint. When in use, pull out the cup stopper 600 so that the fluid spray bottle can be connected to the adapter and other connecting structures through the liquid outlet on the cup lid 300.

[0051] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fluid spray bottle, characterized in that, The device includes an outer cup (100), an inner cup (200), and a lid (300). The bottom of the outer cup (100) has a through mounting hole (110), and the side wall of the mounting hole (110) has a support (120). The bottom wall of the outer cup (100) also has a limiting protrusion (130). The bottom of the inner cup (200) has a vent hole and a closable vent valve (400) corresponding to the vent hole. The vent valve (400) has a stop (411). The inner cup (...) The inner cup (200) is installed on the outer cup (100) such that the vent valve (400) passes through the mounting hole (110). After the inner cup (200) rotates in the first direction, the stop (411) can abut against the limiting protrusion (130). The cup lid (300) is partially inserted into the inner cup (200) and can be locked relative to the outer cup (100) after rotating in the second direction. The bottom of the stop (411) is supported by the support (120). The first direction and the second direction are opposite.

2. The fluid spray bottle according to claim 1, characterized in that, There are two limiting protrusions (130), which are arranged in parallel and located on both sides of the mounting hole (110). There are two stop parts (411), which are arranged symmetrically about the axis of the vent valve (400).

3. The fluid spray bottle according to claim 1, characterized in that, The stop portion (411) is formed on the outer peripheral wall of the vent valve (400), and the stop portion (411) has a stop groove (4111). When the inner cup (200) is rotated in the first direction, the end of the limiting protrusion (130) can extend into the stop groove (4111), and the side wall of the limiting protrusion (130) can abut against the side wall of the stop groove (4111).

4. The fluid spray bottle according to claim 1, characterized in that, The projection of the support portion (120) along the height direction of the outer cup (100) overlaps with the projection of the limiting protrusion (130) along the height direction of the outer cup (100).

5. The fluid spray bottle according to claim 1, characterized in that, The vent valve (400) and the inner cup (200) are integrally formed.

6. The fluid spray bottle according to any one of claims 1-5, characterized in that, The vent valve (400) includes: A valve seat (410) is installed at the bottom of the inner cup (200) and has an airflow channel (4132) communicating with the vent hole; A valve cover (420) has one end connected to the valve seat (410) and the other end having a blocking part (421) that blocks the airflow passage (4132).

7. The fluid spray bottle according to claim 6, characterized in that, The valve seat (410) has a groove (412) formed on the surface opposite to the inner cup (200). A plug-in tube (413) is provided in the groove (412). The plug-in tube (413) has a plug-in hole (4131). The airflow channel (4132) is formed on the bottom wall of the plug-in hole (4131). The valve cover (420) also includes a plug-in part (422) that can be inserted into the plug-in hole (4131). The sealing part (421) is connected to the plug-in part (422).

8. The fluid spray bottle according to claim 7, characterized in that, The outer sidewall of the plug tube (413) and the inner sidewall of the groove (412) have a plurality of reinforcing ribs (414), which are spaced apart circumferentially along the plug tube (413).

9. The fluid spray bottle according to claim 6, characterized in that, A locking protrusion (4231) is provided on one of the outer side wall of the valve seat (410) and the other end of the valve cover (420), and a locking groove (4112) is provided on the other side of the outer side wall of the valve seat (410) and the other end of the valve cover (420) to cooperate with the locking protrusion (4231).

10. The fluid spray bottle according to any one of claims 1-5, characterized in that, The outer cup (100) has a first rotating snap-fit ​​part (140) on its outer peripheral wall. The first rotating snap-fit ​​part (140) has a snap-fit ​​groove, one end of which is open. The edge of the cup lid (300) is provided with a second rotating snap-fit ​​part (310). When the cup lid (300) rotates in the second direction, the second rotating snap-fit ​​part (310) can be inserted into the snap-fit ​​groove from the open end of the snap-fit ​​groove to achieve snap-fit ​​between the cup lid (300) and the outer cup (100).

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