A nebulizer

Abstract

The utility model relates to a sprayer for sucking and spraying liquid in a container, comprising: a spray gun body; an attachment member for attaching the spray gun body to the container; a connecting member, the connecting member is provided with a flange part formed by protruding radially outward, in the state that the spray gun body is attached to the container, the flange part is clamped between the attachment member and the periphery of the mouth of the container, thereby fixing the connecting member to the container, a rotating area is provided on the flange part, which allows the spray gun body to rotate freely relative to the attachment member. The connecting member of the sprayer has a dual-purpose flange part: firstly, it is clamped between the attachment member and the periphery of the mouth of the container, thereby fixing the connecting member to the container; secondly, the flange part is provided with a rotating area that allows the spray gun body to rotate freely relative to the attachment member, which can form a static end face seal on the one hand, and on the other hand, can also avoid the problem of liquid leakage during rotation caused by only having an end face seal.

Description

Technical Field

[0001] This utility model relates to the field of sprayer technology, and in particular to a pump sprayer that is manually operated by a trigger lever. Background Technology

[0002] Existing sprayers include: a main body having a nozzle mounted on the container opening for spraying liquid and forming a pump chamber; a lever mounted on the main body and a plunger rod, capable of sealing the pump chamber and sliding; and a one-way valve that controls the drawing of liquid from the container by the action of the lever (for example, refer to patent document CN202180087630.5 "Hand-operated sprayer"). The hand-operated sprayer has a cap at the lower end of the base, which can be screwed onto the opening of the container. Therefore, by screwing the cap onto the opening of the container, the hand-operated sprayer is installed on the container. It should be noted that this installation method allows the base to rotate freely relative to the cap. The main reason for this is that when the cap is installed on the opening of the container, the base is fixed to the container by clamping the flange formed at the lower end of the base between the cap and the opening of the container.

[0003] However, this type of sprayer still has some shortcomings in actual use:

[0004] First, although the base rotates freely relative to the lid, the flange at the lower end of the base is clamped between the lid and the mouth of the container, keeping the lid in a fixed state relative to the container, the sealing between the base and the lid is relatively weak because the base and the lid are usually sealed at the end face and can rotate relative to each other. Gaps may appear at the connection between the two, leading to liquid leakage.

[0005] Secondly, when sprayers are stacked, such as during transportation, the base of some sprayers may be subjected to forces such as compression or counterclockwise rotation, causing the base to rotate and the cap to rotate. This can easily loosen the fit between the cap and the liquid container, resulting in the liquid inside the container flowing out from the opening and causing waste, making it difficult to meet the transportation needs of sprayers that have already contained liquid. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a sprayer that can prevent relative rotation between the spray body and the container, thereby avoiding liquid leakage, in light of the above-mentioned existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the sprayer, which can be used to draw in and spray out liquid in a container, includes:

[0008] The main body of the spray gun is used to spray liquid;

[0009] An attachment, located at the lower section of the spray gun body, is used to attach the spray gun body to the container;

[0010] Its features are:

[0011] It also includes a connector, which has a flange portion that protrudes radially outward. When the spray gun body is attached to the container, the flange portion is clamped between the connector and the periphery of the container opening, thereby fixing the connector to the container. The flange portion is provided with a rotation area that allows the spray gun body to rotate freely relative to the connector.

[0012] Furthermore, the connector includes an insertion portion that can be inserted into the lower section of the spray gun body. Both the lower section of the spray gun body and / or the insertion portion have at least two sealing portions for sealing, forming a seal on both sides of the rotating circumferential surface. It should be noted that since the connector is inserted into the insertion portion of the lower section of the spray gun body, the flange of the connector is sandwiched between the attachment and the periphery of the container opening. That is, the flange of the connector, the attachment, and the periphery of the container opening constitute a fixed "whole." The only part that can actually rotate is the lower section of the spray gun body, which can rotate freely in the circumferential direction relative to the insertion portion. Therefore, a double seal is formed on the two sides (also called the circumferential surface portions) that contact the insertion portion, ensuring that no gaps causing liquid leakage occur when the spray gun body rotates.

[0013] From the perspective of simple processing, preferably, the connecting member has a convex wall surrounding it to form a cylinder with the opening facing downwards. The outer wall of the bottom periphery of the cylinder or adjacent to its bottom has the flange portion. The flange portion is at least partially recessed downwards to form a groove around which the spray gun body can rotate freely. The groove constitutes the rotating area.

[0014] Furthermore, the groove includes a first groove wall located on the inner side and a second groove wall located on the outer side and sandwiched between the attachment and the periphery of the container opening. The first groove wall continues to extend upward towards the top of the cylinder to form the insertion part. The sealing part is provided on both the inner and outer sides of the circumference of the first groove wall. This groove has a dual function: firstly, it allows the spray gun body to rotate freely; secondly, the first groove wall forming this groove constitutes the "insertion part" for the connector to be inserted into the lower section of the spray gun body. This effectively simplifies the mold design that would otherwise require separate processing of the two parts, while also achieving a compact connection between the entire spray gun body and the connector.

[0015] To achieve a sealing of at least two sides on the rotating circumferential surface between the lower section of the spray gun body and the insertion part, a simpler structural implementation is as follows: the first groove wall and the convex wall form an accommodating space into which the lower section of the spray gun body extends. Correspondingly, the lower section of the spray gun body includes an inner convex ring that can extend into the accommodating space and an outer convex ring spaced apart from the inner convex ring. The outer convex ring has a laterally outward protrusion inserted into the groove at a corresponding position. A gap is left between the attachment and the laterally outward protrusion to allow it to rotate freely. As mentioned above, a sealing structure, such as a sealing groove, is also required on the peripheral wall of the inner convex ring to match the sealing part. This structure, along with the two sides (also known as the peripheral surface) that contact the insertion part, forms a double seal. This is not only relatively simple in structure but also more reliable. Another point to note is the gap: this gap ensures that there is enough space for the attachment and the lateral outward protrusion to rotate freely. Otherwise, the spray gun body may rotate and cause the attachment to rotate as well, eventually leading to leakage.

[0016] To achieve a double seal on the two sides in contact with the insertion part, the structure is further refined as follows: the outer and inner convex rings form a double seal on the inner and outer sides of the circumferential surface of the first groove wall, respectively, on the rotating circumferential surface. The first groove wall also has a replenishment channel that allows outside air to be supplied to the container via the spray body. Simultaneously, the replenishment channel, which allows outside air to be supplied to the container when the sprayer is not activated, is cleverly integrated into the first groove wall. This design takes into account the possibility of designing a liquid guiding mechanism within the spray body, thus avoiding structural interference issues.

[0017] In addition to structural improvements to the connector and the spray body, the attachment also features corresponding structural improvements. Specifically, the attachment is shaped like a cap with its opening facing downwards. It includes a peripheral wall that screws onto the container and a mating portion located at the upper edge of the peripheral wall for clamping the second groove wall with the container. The inner wall of the mating portion has an annular inner step, wherein the top end face of the second groove wall maintains a static seal with the first wall surface below the annular inner step. Since the flange of the connector, the attachment, and the periphery of the container's opening constitute a fixed "unit" relative to the spray body, the attachment structure must necessarily include a seal with the top end face of the second groove wall. This can be achieved by adding an annular inner step, which utilizes the first wall surface below the step to form an end face seal with the second groove wall, preventing leakage.

[0018] Furthermore, the second wall surface above the annular inner step is provided with a limiting part, which can prevent the lower section of the spray gun body from detaching from the rotation area when it rotates freely relative to the attachment. As mentioned above, compared with existing attachments, in addition to a common feature that is to clamp the flange of the lower end of the spray body between it and the mouth of the container, there is another important structural feature, namely, the limiting part. This limiting part only needs to prevent the lower section of the spray gun body pressed in the groove from detaching from the groove. The two do not need to form an end face seal. On the contrary, a gap is needed to allow the lower section of the spray gun body to rotate in order to truly prevent the spray gun body from driving the attachment to rotate.

[0019] In order to allow for a gap for the lower section of the spray gun body to rotate, the limiting part further includes a base end integrally connected to the second wall surface above the annular inner step and a free end that gradually extends downward from the base end from the outside to the inside. The free end continues to extend downward to form an extension end, and the extension end leaves the gap with the lateral outward protrusion.

[0020] Compared with the prior art, the advantages of this utility model are: the flange portion of the sprayer's connecting part has a dual function:

[0021] Firstly, it is used to clamp between the attachment and the periphery of the container's opening, thereby securing the connector to the container;

[0022] Secondly, the flange is provided with a rotating area that allows the spray gun body to rotate freely relative to the attachment. By utilizing the design of the flange and the rotating area in the connector, a static end face seal can be formed on the one hand, and the liquid leakage problem during rotation caused by only end face seal can be avoided on the other hand. This prevents liquid from leaking from the connection between the spray body and the attachment, and also facilitates the overall installation of the sprayer. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the sprayer in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the sprayer in an embodiment of this utility model;

[0025] Figure 3 This is a top view of the sprayer in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 Sectional view at point AA;

[0027] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 for Figure 4 Schematic diagram of the structure after the explosion (excluding attachments);

[0029] Figure 7 This is a schematic diagram of the connector structure in an embodiment of this utility model;

[0030] Figure 8 This is a cross-sectional view of the attachment in an embodiment of the present utility model;

[0031] Figure 9 This is a schematic diagram of the sprayer's liquid inlet state in an embodiment of this utility model;

[0032] Figure 10 This is a schematic diagram of the sprayer spraying liquid state in an embodiment of this utility model. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to specific embodiments.

[0034] like Figures 1-10 The present invention is shown as the preferred embodiment.

[0035] The structure and function of the sprayer will be further explained below.

[0036] The structure and function of the sprayer will be further explained below.

[0037] Figure 4 This is a side sectional view of the sprayer.

[0038] The sprayer of this utility model has the following functions: it includes a spray gun body 1 mounted on a container (not shown), an inlet pipe 14 for introducing liquid into the container and a nozzle 15 for spraying liquid, and also includes a cylinder 16, a piston 17, and a wrench 18. The cylinder 16 is in fluid communication with the inlet pipe 14 and stores liquid; the piston 17 is reciprocally disposed at the outer end of the cylinder 16 and forms a sealed inner cavity within the cylinder 16; the wrench 18 is disposed on one side of the piston 17 and is used to push the piston 17 towards the cylinder 16 from front to back. When the cylinder 16 is filled with liquid, the rotation of the wrench 18 causes the piston 17 to move towards the cylinder 16 from front to back. Figure 10The piston moves to the right, pressurizing the liquid inside the cylinder 16, causing the liquid to be ejected from the nozzle 15. To meet user needs, the nozzle 15 can spray, spray water, or be closed. Therefore, a connector 151 is provided on the nozzle 15. By adjusting the rotation angle of the connector 151 relative to the nozzle 15, the nozzle 15 can achieve at least one of the following spray states: spraying or closed. Alternatively, in the direction of liquid ejection, the nozzle 15 has a mesh structure downstream of the spray nozzle that can convert the spray state into a foam state. This mesh structure also allows the nozzle 15 to spray foam. Furthermore, conversely, by resetting the wrench 18, the piston 17 moves upstream (…). Figure 9 The cylinder moves to the left side, creating a negative pressure inside the cylinder section 16, thereby filling the cylinder section 16 with liquid from the container.

[0039] In addition to the basic spraying function mentioned above, the applicant's main focus is on how to prevent liquid leakage when the spray gun body 1 rotates relative to the container.

[0040] A connector 2 for attaching the spray gun body 1 to a container is provided at the lower section. The connector 2 is a cap-shaped part with the opening facing downwards. Importantly, it also includes a connector 3. The connector 3 has a flange portion 31 that protrudes radially outwards. When the spray gun body 1 is attached to the container, the flange portion 31 is sandwiched between the connector 2 and the periphery of the container opening, thereby fixing the connector 3 to the container. The flange portion 31 is provided with a rotation area that allows the spray gun body 1 to rotate freely relative to the connector 2. From the perspective of simple processing, preferably, the connector 3 is surrounded by a convex wall 34 to form a cylindrical body with the opening facing downwards. The outer wall of the cylindrical body near its bottom has a flange portion 31. The flange portion 31 is at least partially recessed downwards to form a groove 35 that allows the spray gun body 1 to rotate freely. The groove 35 constitutes the rotation area.

[0041] In addition, the connector 3 also includes an insertion part 32 that can be inserted into the lower section of the spray gun body 1. Both the lower section of the spray gun body 1 and the insertion part 32 have three sealing parts 33 for sealing, which together constitute at least two side seals on the rotating circumferential surface. It should be noted that: since the connector 3 is inserted into the insertion part 32 of the lower section of the spray gun body 1, the flange part 31 of the connector 3 is sandwiched between the attachment 2 and the periphery of the container opening. That is, the flange part 31 of the connector 3, the attachment 2, and the periphery of the container opening constitute a fixed "whole". The only part that can actually rotate is the lower section of the spray gun body 1, which can rotate freely in the circumferential direction relative to the insertion part 32. Therefore, a double seal is formed on the two sides (also called the circumferential surface) that contact the insertion part 32, ensuring that no gaps causing liquid leakage occur when the spray gun body 1 rotates. Figure 6As shown, the groove 35 in this embodiment includes a first groove wall 351 located on the inner side and a second groove wall 352 located on the outer side and sandwiched between the attachment 2 and the periphery of the container opening. The first groove wall 351 continues to extend upward in the direction of the top of the cylinder to form an insertion part 32. Sealing parts 33 are provided on both the inner and outer sides of the periphery of the first groove wall 351. In order to facilitate installation and processing, the sealing part 33 can be set as an independently installed component such as a sealing ring or sealing ring, depending on actual needs. To ensure that the lower section of the spray gun body 1 and the insertion part 32 are sealed on both sides of the rotating circumferential surface, a simpler structural implementation is as follows: the first groove wall 351 and the convex wall 34 form an accommodating space 36 into which the lower section of the spray gun body 1 extends. Correspondingly, the lower section of the spray gun body 1 includes an inner convex ring 11 that can extend into the accommodating space 36 and an outer convex ring 12 spaced apart from the inner convex ring 11. The outer convex ring 12 has a laterally outward protrusion 121 inserted into the groove 35 at a corresponding position. A gap 4 is left between the attachment 2 and the laterally outward protrusion 121 to allow for free rotation. Figure 5 As shown, the inner convex ring 11 contacts the outer circumference of the rotating surface relative to the first groove wall 351, while the outer convex ring 12 contacts the inner circumference of the rotating surface relative to the first groove wall 351. Therefore, the inner convex ring 11 needs to be provided with a sealing structure, such as a sealing groove, on its outer circumference and the outer convex ring 12 needs to be provided with a sealing structure that matches the sealing part 33 on its inner circumference. This arrangement can form a point contact seal on both the inner and outer sides of the rotating surface of the first groove wall 351. Since the first groove wall 351 will be squeezed to a certain extent when inserted between the inner convex ring 11 and the outer convex ring 12, the sealing strength will be further enhanced. The structure is not only relatively simple, but also more reliable.

[0042] In addition to the aforementioned two-sided sealing, another important point to note is the gap 4: this gap 4 ensures that there is sufficient space for the attachment 2 and the lateral outward protrusion 121 to rotate freely; otherwise, the spray gun body 1 may rotate, causing the attachment 2 to rotate as well, ultimately leading to leakage. The formation of this gap 4 mainly relies on structural improvements to the attachment 2. As mentioned earlier, in order to achieve two-sided sealing, the connector 3 and the spray body need structural improvements of their own structures, and the attachment 2 also requires corresponding structural improvements. Specifically, for example... Figure 8As shown, the attachment 2 is a cap-shaped part with its opening facing downwards. The attachment 2 includes a peripheral wall 21 that screws onto the container and a mating part 22 located at the upper edge of the peripheral wall 21 for clamping the second groove wall 352 with the container. The inner sidewall of the mating part 22 has an annular inner step 23, wherein the top end face of the second groove wall 352 maintains a static sealing fit with the first wall surface 231 below the annular inner step 23. Since the flange 31 of the connector 3, the attachment 2, and the periphery of the container opening constitute a "whole" that is fixed relative to the spray body, the structure of the attachment 2 must have a structure that seals with the top end face of the second groove wall 352. For example, by adding an annular inner step 23 to the structure, the first wall surface 231 below the step forms an end face seal with the second groove wall 352 to prevent leakage. Furthermore, the second wall surface 232 above the annular inner step 23 also needs to be provided with a limiting part 24. The limiting part 24 can prevent the lower section of the spray gun body 1 from coming out of the rotation area when it rotates freely relative to the attachment 2. As mentioned above, compared with the existing attachment 2, in addition to a common feature that it needs to clamp the flange 31 at the lower end of the spray body between it and the mouth of the container, there is another important structural feature, namely, the limiting part 24. The limiting part 24 only needs to prevent the lower section of the spray gun body 1 pressed in the groove 35 from coming out of the groove 35. The two do not need to form an end face seal. On the contrary, a gap 4 is needed to allow the lower section of the spray gun body 1 to rotate in order to truly prevent the spray gun body 1 from driving the attachment 2 to rotate. Finally, in order to leave a gap 4 for the lower section of the spray gun body 1 to rotate, the structure of the limiting part 24 includes a base end 241 integrally connected to the second wall surface 232 above the annular inner step 23 and a free end 242 that gradually extends downward from the outside to the inside of the base end 241. The free end 242 continues to extend downward to form an extension end 243, and a gap 4 is left between the extension end 243 and the lateral outward protrusion 121.

[0043] In summary, when installing the sprayer in this embodiment, the connector 3 of the spray gun body 1 is clamped between the attachment 2 and the periphery of the container opening, thereby fixing the connector 3 to the container. A rotating area is provided on the flange 31 of the connector 3, allowing the spray gun body 1 to rotate freely relative to the attachment 2. This design of the flange 31 and the rotating area in the connector 3 achieves a static end-face seal and avoids liquid leakage during rotation due to only having an end-face seal, thus preventing liquid leakage from the connection between the spray body and the attachment 2. The spraying process is as follows: First, the user can adjust the nozzle 15 with a mesh structure according to whether foam generation is needed. Then, according to usage requirements, the user selects the indicator icon corresponding to the connector 151 on the nozzle 15 to spray or turn off the spray. After adjusting the rotation angle of the connector 151, spraying is performed in upright mode. Pressing the wrench 18 adds liquid, forcing the first valve structure 19 open, and liquid enters the cylinder 16 from the container through the inlet pipe 14 (e.g., Figure 9 As shown), the reduced pressure generated in the cylinder section 16 serves as the driving force, propelling the liquid from the fluid-connected container into the cylinder section 16 to a predetermined amount. The liquid in the cylinder section 16 momentarily presses against the first valve structure 19, effectively preventing the liquid from flowing back into the container. Pressing the lever 18 again causes the liquid to spray out from the nozzle section 15 due to its incompressibility. Considering that gas needs to be added to the container to balance the pressure during the use of the sprayer, such as... Figure 7 As shown, in this embodiment, the air supply channel 13 for replenishing external air into the container is cleverly integrated into the first groove wall 351. Specifically, it is an axial air supply groove that communicates with the sealing groove circumferentially provided by the inner convex ring 11. This design takes into account that a liquid guiding mechanism for spraying liquid may also need to be designed in the spray body, thus avoiding structural interference problems.

Claims

1. A sprayer capable of drawing in and spraying liquid from a container, comprising: The spray gun body (1) is used for spraying liquid; An attachment (2) is provided in the lower section of the spray gun body (1) for attaching the spray gun body (1) to the container; Its features are: It also includes a connector (3), which has a flange (31) that protrudes outward in a radial direction. When the spray gun body (1) is attached to the container, the flange (31) is sandwiched between the attachment (2) and the periphery of the container opening, thereby fixing the connector (3) to the container. The flange (31) is provided with a rotation area that allows the spray gun body (1) to rotate freely relative to the attachment (2).

2. The sprayer according to claim 1, characterized in that: The connector (3) includes an insertion part (32) that can be inserted into the lower section of the spray gun body (1). The lower section of the spray gun body (1) and / or the insertion part (32) each have at least two sealing parts (33) for sealing, which together form a seal on both sides of the rotating circumferential surface.

3. The sprayer according to claim 2, characterized in that: The connector (3) is surrounded by a convex wall (34) to form a cylinder with an opening facing downward. The bottom periphery of the cylinder or the outer wall adjacent to its bottom has the flange (31). The flange (31) is at least partially recessed downward to form a groove (35) around the spray gun body (1) for free rotation. The groove (35) constitutes the rotation area.

4. The sprayer according to claim 3, characterized in that: The groove (35) includes a first groove wall (351) located on the inner side and a second groove wall (352) located on the outer side and sandwiched between the attachment (2) and the periphery of the container opening. The first groove wall (351) continues to extend upward in the direction of the top of the cylinder to form the insertion part (32). The sealing part (33) is provided on both the inner and outer sides of the periphery of the first groove wall (351).

5. The sprayer according to claim 4, characterized in that: The first groove wall (351) and the convex wall (34) form an accommodating space (36) into which the lower section of the spray gun body (1) extends. Correspondingly, the lower section of the spray gun body (1) includes an inner convex ring (11) that can extend into the accommodating space (36) and an outer convex ring (12) spaced apart from the inner convex ring (11). The outer convex ring (12) has a lateral outward protrusion (121) inserted into the groove (35) at a corresponding position. A gap (4) is left between the attachment (2) and the lateral outward protrusion (121) for free rotation.

6. The sprayer according to claim 5, characterized in that: The outer convex ring (12) and the inner convex ring (11) form a two-sided seal on the rotating circumferential surface with the inner and outer sides of the circumferential surface of the first groove wall (351), and the first groove wall (351) is also provided with an air supply channel (13) that allows outside air to be supplied to the container through the spray body.

7. The sprayer according to claim 6, characterized in that: The attachment (2) is in the shape of a cap with the opening facing downward. The attachment (2) includes a peripheral wall (21) that screws into the container and a mating part (22) located at the upper edge of the peripheral wall (21) for mating with the container to clamp the second groove wall (352). The inner sidewall of the mating part (22) has an annular inner step (23). The top end face of the second groove wall (352) and the first wall surface (231) below the annular inner step (23) maintain a static sealing fit.

8. The sprayer according to claim 7, characterized in that: The second wall surface (232) above the annular inner step (23) is provided with a limiting part (24), which can prevent the lower section of the spray gun body (1) from coming out of the rotation area when it rotates freely relative to the attachment (2).

9. The sprayer according to claim 8, characterized in that: The limiting part (24) includes a base end (241) integrally connected to the second wall surface (232) above the annular inner step (23) and a free end (242) that gradually extends downward from the base end (241) from the outside to the inside. The free end (242) continues to extend downward to form an extension end (243). The extension end (243) and the lateral outward protrusion (121) have the gap (4).

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