A rotating arm device for liquid spraying and a squeeze bottle

Abstract

The utility model discloses a kind of arm rotating device for spraying and pressure spray bottle, arm rotating device for spraying includes pressing part, arm rotating part, pressing part is provided with spray channel I, arm rotating part is provided with spray channel II, pressing part is used to connect pumping part and bottle body, characterized in that, spray channel I and the series connection channel of spray channel II are provided with a negative pressure cavity;When compression stroke, negative pressure cavity is pressed and extruded by liquid pumped by pumping part, when reset stroke, form negative pressure, and negative pressure cavity is communicated with the liquid outlet end of arm rotating part;Pressure spray bottle includes arm rotating device for spraying, pumping part and bottle body, the pressing part of arm rotating device for spraying is connected with bottle body, and pumping part is arranged between pressing part and bottle body.

Description

Technical Field

[0001] This utility model belongs to the field of medical liquid spray technology, specifically relating to a rotating arm device for spraying liquid and a pressure spray bottle. Background Technology

[0002] Currently, the rotary arm type pressure spraying device on the market has a long rotary arm and a relatively long fluid channel. After the spraying is completed, the liquid in the rotary arm still remains in the channel, which not only causes waste, but if not stored properly, the long interval between continuous use may also lead to the residual liquid being contaminated and deteriorated, and misused. Utility Model Content

[0003] To address the problem of waste, contamination, and deterioration caused by residual liquid in the rotating arm after spraying in existing rotary arm pressure spraying devices, this application proposes a method that involves setting up a negative pressure chamber consisting of a compression cavity, a seal, and a reset component in the series channel between spraying channel I and spraying channel II. This chamber is then used in conjunction with a valve structure or a one-way valve to achieve controllable communication with the liquid outlet end of the rotating arm. This overcomes the shortcomings of existing technologies, such as the inability to actively recover residual liquid in the channels and insufficient spray safety and hygiene. The application achieves the technical effect of actively sucking and recovering residual liquid during the reset stroke, reducing waste, preventing contamination and deterioration, and improving spray safety and service life.

[0004] This application provides a rotating arm device for spraying liquid, including a pressing part and a rotating arm part. The pressing part is provided with a spraying channel I, and the rotating arm part is provided with a spraying channel II. The pressing part is used to connect the pumping part and the bottle body. A negative pressure chamber is provided on the series channel of spraying channel I and spraying channel II.

[0005] During the compression stroke, the negative pressure chamber is pressed and squeezed by the liquid pumped by the pumping unit. During the reset stroke, a negative pressure is formed, and the negative pressure chamber is connected to the liquid outlet of the rotating arm.

[0006] The technical solution provided in this application also has the following technical features:

[0007] Preferably, in one embodiment of this application, the negative pressure chamber is disposed between the pumping section and the spray channel I.

[0008] Preferably, in one embodiment of this application, the negative pressure chamber includes a compression cavity, a seal, and a reset member; the reset member abuts against the seal, so that when the reset member is not driven by the seal and is compressed, the seal is disposed between the two ends of the compression cavity, so that the two ends are separated and not connected; one end of the compression cavity is connected to the output port of the pumping unit, and the other end is connected to the inlet of the spray channel I;

[0009] The reset element is driven by the seal and compressed to the target limit position, and the two ends of the compression cavity are connected.

[0010] Preferably, in one embodiment of this application, a valve is provided between the compression cavity and the injection channel II to connect or close the compression cavity and the injection channel II.

[0011] Preferably, in one embodiment of this application, the negative pressure chamber is connected to the liquid outlet of the rotating arm through liquid spraying channel I and liquid spraying channel II.

[0012] Preferably, in one embodiment of this application, the negative pressure chamber is connected to the liquid outlet of the rotating arm through an independent liquid spraying channel III, and the liquid spraying channel III is equipped with a one-way valve to allow the liquid outlet to flow unidirectionally into the negative pressure chamber; a one-way valve is also provided on the corresponding liquid spraying channel I or liquid spraying channel II so that the liquid can only flow unidirectionally from the negative pressure chamber into liquid spraying channel I or liquid spraying channel II.

[0013] The spray channel III can be set parallel to spray channels I and II, as long as it can be used to draw back residual liquid.

[0014] Preferably, in one embodiment of this application, the spray channel I is disposed inside the blocking rod, so that the spray channel I and the spray channel II are always connected, and a protrusion is provided on the end face of the other end of the blocking rod to cooperate with the output port of the compressed cavity to form a valve.

[0015] Preferably, in one embodiment of this application, a rotating pair is provided between the rotating arm and the nozzle, and the blocking rod and the rotating arm are relatively fixedly connected, so that the blocking rod rotates together with the rotating arm.

[0016] Preferably, in one embodiment of this application, the pressing part includes a nozzle, a negative pressure chamber is disposed inside the nozzle, the sealing element is a piston, and the reset element is a spring;

[0017] The boom arm is equipped with a water core, and a spray channel II is installed inside the water core; the water core extends out of the end of the boom arm, and a nozzle is fitted on the extended section of the water core; the nozzle is equipped with a dust cover.

[0018] Preferably, in one embodiment of this application, a pressure spray bottle includes a pumping unit, a bottle body, and a spraying rotating arm device. The pressing part of the spraying rotating arm device is connected to the bottle body, and the pumping unit is provided between the pressing part and the bottle body.

[0019] 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.

[0020] 1. In order to solve the problems of residual liquid waste in the rotary arm channel after the spraying of the rotary arm type pressure spraying device and easy contamination and deterioration during long-term use, this application adopts the method of setting a negative pressure chamber composed of a compression cavity, a sealing component and a reset component in the series channel of spraying channel I and spraying channel II, and setting a valve or one-way valve between the compression cavity and the liquid outlet end of the rotary arm. This overcomes the defect of the existing technology that the residual liquid cannot be actively recovered, and achieves the technical effect of actively sucking the residual liquid back during the reset stroke and significantly reducing the residual liquid retention.

[0021] 2. In order to solve the problem that residual liquid in long channels is easily polluted by the environment, this application adopts a method of using a negative pressure chamber and an independent spray channel III in conjunction with a one-way valve. Through the independent spray channel III, the residual liquid can only flow into the negative pressure chamber in one direction and be discharged. This overcomes the defect of the prior art that there is a risk of reverse pollution between the channel and the environment, and achieves the technical effect of preventing residual liquid pollution and improving the hygiene of the spray liquid. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a perspective view of a rotary arm device for spraying liquid according to the present invention;

[0024] Figure 2 This is a front view of a rotary arm device for spraying liquid according to the present invention;

[0025] Figure 3 This is a top view of a rotary arm device for spraying liquid according to the present invention;

[0026] Figure 4 A bottom view of a rotary arm device for pressure spraying liquid according to this utility model;

[0027] Figure 5 This utility model Figure 3 AA section view;

[0028] Figure 6 This utility model Figure 2 BB cross-sectional view;

[0029] Components in the diagram:

[0030] 100. Sprayer head

[0031] 200. Blocking bar

[0032] 300, boom arm

[0033] 400, Water Core

[0034] 500, Nozzle

[0035] 600, dust cover

[0036] 700, Piston

[0037] 800, Spring

[0038] 101. Spray Channel I

[0039] 301. Spray channel II. Detailed Implementation

[0040] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] like Figure 1-6 A spraying rotating arm device includes a pressing part and a rotating arm part. The pressing part is provided with a spraying channel I 101, and the rotating arm part is provided with a spraying channel II 301. The pressing part is used to connect the pumping part and the bottle body. A negative pressure chamber is provided on the series channel of spraying channel I 101 and spraying channel II 301.

[0045] During the compression stroke, the negative pressure chamber is pressed and squeezed by the liquid pumped by the pumping unit. During the reset stroke, a negative pressure is formed, and the negative pressure chamber is connected to the liquid outlet of the rotating arm.

[0046] When implementing this application, the key points are as follows: In terms of structural configuration, the negative pressure chamber is preferably located between the pumping section and the spray channel I. The negative pressure chamber consists of a compression cavity, a sealing element, and a reset element. When not compressed, the reset element pushes the sealing element to keep the two ends of the compression cavity separated, maintaining a seal and preventing air and other contaminants from entering the liquid in the container. A valve is installed between the compression cavity and the spray channel II to realize the controllable opening and closing of the spray path.

[0047] During operation, when the user presses the pressing part, the pumping part outputs liquid and simultaneously squeezes the negative pressure chamber, causing the residual gas and liquid in the negative pressure chamber to be discharged and pushing the liquid in the spray channel II to be sprayed out. When the pressing part resets, the reset part rebounds and drives the sealing part to connect the two ends of the compression cavity, forming a negative pressure in the negative pressure chamber. This draws the residual liquid at the liquid outlet of the rotating arm back into the negative pressure chamber through spray channel I, spray channel II, or the independent spray channel III, thereby emptying the liquid in the long channel. With the one-way valve structure, it can prevent residual liquid from flowing back to the outside of the nozzle or coming into contact with the outside environment and being contaminated. At the same time, the rotating joint between the rotating arm and the nozzle ensures that the spray direction is adjustable, and the water core and dust cover structure improves the sealing and protection performance of the nozzle, realizing a comprehensive improvement in active residual liquid recovery, flexible adjustment of spray direction, and spray safety.

[0048] Specifically, in one embodiment of this application, a negative pressure chamber is disposed between the pumping section and the spray channel I101; the negative pressure chamber includes a compression cavity, a seal, and a reset member; the reset member abuts against the seal, so that when the reset member is not driven by the seal and is compressed, the seal is disposed between the two ends of the compression cavity, so that the two ends are separated and not connected; one end of the compression cavity is connected to the output port of the pumping section, and the other end is connected to the inlet of the spray channel I101;

[0049] The reset element is driven by the seal and compressed to the target limit position, and the two ends of the compression cavity are connected; a valve is provided between the compression cavity and the liquid injection channel II 301 to connect or close the compression cavity and the liquid injection channel II 301; the negative pressure cavity is connected to the liquid outlet of the rotating arm through the liquid injection channel I 101 and the liquid injection channel II 301.

[0050] By machining the compression cavity as a whole into a structure including a partially cylindrical cavity, and setting a protrusion that can unlock the seal, and setting a precision-fitting seal and reset element at both ends, the system achieves sealed compression, unlocked sealing spray, and negative pressure suction of residual liquid during return.

[0051] The reset component should preferably be a helical compression spring made of spring steel, which can achieve rapid rebound during reset by maintaining a constant preload with the end face of the seal.

[0052] The compression cavity and the pump outlet and the inlet of the spray channel I are manufactured by integral injection molding or high-precision insert molding to reduce assembly gaps and improve sealing reliability. On the path connecting the liquid outlet of the rotating arm and the negative pressure chamber, the inner wall of the flow channel should be kept smooth and burr-free to reduce the resistance to liquid back suction, thereby ensuring that the negative pressure generated by the reset stroke can efficiently recover the residual liquid in the channel and achieve the expected technical effect of emptying the spray end.

[0053] Specifically, in one embodiment of this application, the negative pressure chamber is connected to the liquid outlet of the rotating arm through an independent liquid spraying channel III, and the liquid spraying channel III is equipped with a one-way valve to allow the liquid outlet to flow unidirectionally into the negative pressure chamber; a one-way valve is also provided on the corresponding liquid spraying channel I or liquid spraying channel II to allow the liquid to flow unidirectionally from the negative pressure chamber into liquid spraying channel I or liquid spraying channel II.

[0054] The spray channel III can be set parallel to spray channels I and II, as long as it can be used to draw back residual liquid.

[0055] Specifically, in one embodiment of this application, the spray channel I 101 is disposed within the blocking rod 200, ensuring that the spray channel I 101 and the spray channel II 301 are always connected. A protrusion is provided on the end face of the other end of the blocking rod 200 to cooperate with the output port of the compressed cavity to form a valve. A rotating pair is provided between the rotating arm rod 300 and the nozzle 100, and the blocking rod 200 and the rotating arm rod 300 are relatively fixedly connected, so that the blocking rod 200 rotates together with the rotating arm rod 300. The pressing part includes the nozzle 100, the negative pressure chamber is disposed within the nozzle 100, the sealing element is a piston 700, and the reset element is a spring 800.

[0056] The boom arm 300 is equipped with a water core 400 inside, and a spray channel II 301 is provided inside the water core 400; the water core 400 extends out of the end of the boom arm 300, and a nozzle 500 is fitted on the extended section of the water core 400; the nozzle 500 is equipped with a dust cover 600.

[0057] This is achieved by machining the blocking rod 200 as a hollow rod body and forming a spray channel I 101 inside it, ensuring that this channel and the spray channel II 301 inside the rotating arm rod 300 remain coaxially connected after assembly; the protrusion on the end face of the blocking rod 200 needs to be machined with high precision or injection molded to form a reliable valve seat seal with the output port of the compression cavity; the rotating pair between the rotating arm rod 300 and the nozzle 100 can adopt a sleeve structure to ensure smooth rotation and reduce wear, while the fixed connection between the blocking rod 200 and the rotating arm rod 300 can be achieved through an interference fit to ensure rotational following;

[0058] The negative pressure chamber inside the nozzle 100 is compressed and reset by the piston 700 and the spring 800. The piston 700 should be made of wear-resistant and liquid corrosion-resistant engineering plastic and equipped with a sealing ring to maintain a long-term stable sealing and negative pressure effect.

[0059] The spring 800 needs to be selected based on the stroke mechanical parameters to ensure the reset speed and negative pressure formation efficiency;

[0060] The water core 400 inside the boom arm 300 can be made of pressure-resistant and corrosion-resistant plastic parts. Its extended section is fitted with a nozzle 500, which is fixed by threads or snaps for easy replacement and maintenance. The nozzle 500 is equipped with a dust cover 600. The dust cover should be made of flexible and durable material and designed with a snap-fit ​​or twist-lock structure to facilitate frequent disassembly and assembly while effectively preventing dust and microorganisms from entering the nozzle. This achieves the expected technical effects of adjustable spray direction, continuous sealing of the spray channel, and end protection, while ensuring residual liquid recovery and spray safety.

[0061] In order to solve the problem of inflexible spray direction adjustment, this application adopts a rotating pair structure between the rotating arm and the nozzle, and makes the blocking rod and the rotating arm relatively fixedly connected. This overcomes the defects of the existing technology that the spray direction is singular and inconvenient to adjust, and achieves the technical effect that the spray direction can be flexibly adjusted as needed.

[0062] In order to solve the problem of insufficient sealing and protection of the nozzle structure, this application adopts the method of setting a water core inside the rotating arm and fitting the nozzle onto the water core extension section with a dust cover. This overcomes the defect of the nozzle being exposed and prone to dust accumulation and contamination in the prior art, and achieves the technical effect of improving the sealing and protection capability of the nozzle and extending its service life.

[0063] Specifically, in one embodiment of this application, a pressure spray bottle includes a pumping unit, a bottle body, and a spraying rotating arm device. The pressing part of the spraying rotating arm device is connected to the bottle body, and the pumping unit is provided between the pressing part and the bottle body.

[0064] Specifically, in one embodiment of this application, when a pressure differential back-suction liquid structure is pressed, the piston 700 compresses the spring 800 to move upward under the action of the liquid pressure. At the limit position, the liquid outlet channel is enlarged, allowing the liquid to spray out from the side of the piston 700. When the pressure pump is canceled, the hydraulic pressure disappears at the same time. The spring 800 inside the piston 700 drives the piston 700 to reset and move downward. A low pressure is formed inside the rotating arm 300, which drives the liquid at the nozzle 500 to flow back, achieving the function of back-suction of residual liquid.

[0065] This invention addresses the technical problem of existing rotary arm pressure spraying devices where residual liquid in the rotary arm after spraying easily leads to waste, contamination, and deterioration. It proposes a rotary arm spraying device and pressure spraying bottle with a negative pressure chamber between the pressing part and the rotary arm. The core of this invention is the introduction of a negative pressure chamber into the series channel between spraying channel I and spraying channel II. The negative pressure chamber consists of a compression cavity, a sealing element, and a reset element, and can be used in conjunction with a valve structure or a one-way valve to achieve controllable communication with the liquid outlet end of the rotary arm.

[0066] During the compression stroke, the pumped liquid expels air or liquid from the negative pressure chamber by moving the seal. During the reset stroke, the pressure of the pumped liquid disappears or weakens. As the reset element drives the seal to return to its original position, a negative pressure is generated in the negative pressure chamber, actively drawing back the residual liquid at the end of the rotating arm and preventing liquid stagnation in long channels. This structure significantly reduces residual liquid, lowers the risk of liquid waste, and inhibits the possibility of residual liquid contamination or deterioration during long-term use, thereby improving spray safety and hygiene. In addition, the design of the valve and the blocking rod ensures the stability of channel connectivity and the precision of spray control, while the rotating joint and water core structure take into account both flexible adjustment of the spray direction and reliable sealing. The overall solution achieves the coordinated operation of active clearing of the spray path and reset sealing in the structure. The technical features and technical effects are closely correlated, which not only improves the safety of product use but also extends the service life of the medical liquid spray device.

[0067] In summary, this invention aims to solve the technical problem of existing rotary arm spraying devices where residual liquid in the rotary arm cannot be actively emptied after spraying, leading to liquid waste and easy contamination and deterioration during long-term use. By setting a negative pressure chamber consisting of a compression cavity, a seal, and a reset component between spraying channel I and spraying channel II, and using a valve structure or one-way valve to achieve controllable communication with the liquid outlet end of the rotary arm, the device generates negative pressure during the reset stroke to actively recover residual liquid, thereby significantly reducing residual liquid retention, improving spraying safety and hygiene, and extending the service life of the device.

[0068] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A rotating arm device for spraying liquid, comprising a pressing part and a rotating arm part, wherein the pressing part is provided with a spraying channel I, and the rotating arm part is provided with a spraying channel II, the pressing part being used to connect a pumping part and a bottle body, characterized in that, A negative pressure chamber is provided on the series channel of spray channel I and spray channel II; During the compression stroke, the negative pressure chamber is pressed and squeezed by the liquid pumped by the pumping unit. During the reset stroke, a negative pressure is formed, and the negative pressure chamber is connected to the liquid outlet of the rotating arm.

2. The rotary arm device for spraying liquid as described in claim 1, characterized in that, The negative pressure chamber is located between the pumping section and the liquid spraying channel I.

3. The rotary arm device for spraying liquid as described in claim 2, characterized in that, The negative pressure chamber includes a compression cavity, a seal, and a reset component; the reset component abuts against the seal, so that when the reset component is not driven by the seal and is compressed, the seal is positioned between the two ends of the compression cavity, separating the two ends from each other; one end of the compression cavity is connected to the output port of the pumping unit, and the other end is connected to the inlet of the liquid spraying channel I; The reset element is driven by the seal and compressed to the target limit position, and the two ends of the compression cavity are connected.

4. The rotary arm device for spraying liquid as described in claim 3, characterized in that, A valve is installed between the compression cavity and the injection channel II to allow the compression cavity and the injection channel II to be connected or closed.

5. The rotary arm device for spraying liquid as described in claim 1, characterized in that, The negative pressure chamber is connected to the liquid outlet of the rotating arm through liquid spraying channel I and liquid spraying channel II.

6. The rotary arm device for spraying liquid as described in claim 1, characterized in that, The negative pressure chamber is connected to the liquid outlet of the rotating arm through an independent liquid spraying channel III, and the liquid spraying channel III is equipped with a one-way valve to allow the liquid outlet to flow unidirectionally into the negative pressure chamber.

7. The rotary arm device for spraying liquid as described in claim 4, characterized in that, The liquid injection channel I is set inside the blocking rod (200) so that the liquid injection channel I and the liquid injection channel II are always connected. A protrusion is provided on the end face of the other end of the blocking rod (200) to cooperate with the output port of the compressed cavity to form a valve.

8. The rotary arm device for spraying liquid as described in claim 7, characterized in that, A rotating pair is provided between the rotating arm (300) and the nozzle (100), and the blocking rod (200) and the rotating arm (300) are relatively fixedly connected, so that the blocking rod (200) rotates together with the rotating arm (300).

9. The rotary arm device for spraying liquid as described in claim 1, characterized in that, The pressing part includes a nozzle (100), a negative pressure chamber is disposed inside the nozzle (100), a piston (700) is used as the sealing element, and a spring (800) is used as the reset element; A water core (400) is installed inside the boom arm (300), and a spray channel II is installed inside the water core (400); the water core (400) extends out of the end of the boom arm (300), and a nozzle (500) is fitted on the extended section of the water core (400); a dust cover (600) is fitted on the nozzle (500).

10. A pressure spray bottle, characterized in that, The device includes the spraying arm device, pumping unit, and bottle body as described in any one of claims 1-9, wherein the pressing part of the spraying arm device is connected to the bottle body, and the pumping unit is provided between the pressing part and the bottle body.

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