A water-air dual-purpose pump with low operation sound

Abstract

The utility model relates to a kind of water-gas dual-purpose pump of small operating sound, belong to pump body field, including stroke cavity shell and the motor and fixed support being set in the upper and lower ends of the stroke cavity shell, the inside of the stroke cavity shell and fixed support has stroke cavity, the fixed support is embedded with by several groups of silica gel bowl matrix arrangement formed water-gas isolation membrane and fixedly arranged in the linkage support below water-gas isolation membrane, the upper cover assembly and middle shell are sequentially arranged in the fixed support top from top to bottom, the edge of the middle shell is compacted water-gas isolation membrane and forms the isolation effect to stroke cavity.This water-gas dual-purpose pump of small operating sound, four independent silica gel bowls are synchronously driven by linkage support, the rotation impact of eccentric shaft rod is evenly dispersed by four-way uniform distribution elastic deformation, avoids the periodic hard impact of traditional cam and metal bearing, operating noise is significantly reduced, pressure is big and pump body is small and exquisite.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically a water-air dual-purpose pump with low operating noise. Background Technology

[0002] Currently, miniature water-air dual-purpose pumps are widely used in scenarios requiring the simultaneous delivery of water or gas, such as water flossers, portable humidifiers, and laboratory sampling. Their mainstream structures include diaphragm pumps, gear pumps, and cam-bladder pumps: the motor drives the elastic diaphragm / bladder to reciprocate through a gear or cam mechanism, achieving suction-water / air circulation with the cooperation of a one-way valve; the pump body is mostly made of reinforced nylon or engineering plastics, equipped with a brushless DC motor with a rated power of 3-8 W, which can operate continuously under a 5-24 V DC power supply and has the ability to self-prime 4-5 m of water column.

[0003] While existing water-air dual-purpose pumps have achieved both "water and air dual-purpose" operation and miniaturization, they still share the common problem of excessive operating noise. In particular, gear-driven pumps generate sharp noise due to high-speed meshing, and the noise is further aggravated after gear wear. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a water-air dual-purpose pump with low operating noise. It has the advantages of high pressure, small pump body, and low operating noise, and solves the problems of high operating noise, poor sealing, and short lifespan of existing water-air dual-purpose pumps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water-air dual-purpose pump with low operating noise, comprising a stroke chamber shell and a motor and a fixed bracket disposed at the upper and lower ends of the stroke chamber shell. The stroke chamber shell and the fixed bracket have a stroke cavity inside. The fixed bracket is embedded with a water-air isolation membrane formed by a matrix arrangement of several sets of silicone cups and a linkage bracket fixedly disposed below the water-air isolation membrane. The top of the fixed bracket is provided with an upper cover assembly and a middle shell from top to bottom. The edge of the middle shell presses against the water-air isolation membrane to form an isolation effect on the stroke cavity. The openings of the several sets of silicone cups fit against the opposite middle shells and are pressed to form several individual air pressure chambers. An eccentric shaft is fixedly connected to the output end of the motor. The eccentric shaft is located in the stroke cavity. The center of the linkage bracket extends downward and is connected to the eccentric shaft to form a rotatable connection. When the motor runs, the eccentric shaft and the linkage bracket swing eccentrically, forming a cyclic squeezing and stretching action on the several sets of silicone cups on the water-air isolation membrane.

[0006] Furthermore, the upper cover assembly includes an upper cover disposed on the top of the middle shell, the upper cover being provided with an air inlet port and an air outlet port, the air inlet port and the air outlet port extending inward to form two mutually isolated air inlet channels and air outlet channels, the air inlet channels and the air outlet channels being formed between the upper cover and the middle shell, the air inlet channel being arranged around the air outlet channel.

[0007] Furthermore, the air outlet is a rectangular cavity, and the inner wall of the air outlet is provided with a plurality of extrusion columns, which are located on the upper cover. There are gaps between the plurality of extrusion columns, and the top of the air outlet is connected to the air outlet port.

[0008] Furthermore, several air outlets are provided at the bottom of the air outlet near the four corners. The air outlets are located on the middle shell and are arranged opposite to several sets of silicone bowls and located in the air pressure chamber.

[0009] Furthermore, a first rubber plug is provided in the air outlet, and the plurality of extrusion columns press the first rubber plug tightly. When the silicone cup is in the extrusion stroke, when gas or water is released from the air outlet, it simultaneously pushes the first rubber plug, causing the first rubber plug to deform and the air outlet to open.

[0010] Furthermore, several second rubber plugs are embedded inside the air intake duct. The second rubber plugs are T-shaped in shape and are fixedly connected to the bottom surface of the middle shell. The second rubber plugs are fitted into the middle shell. Several sets of air intake holes are opened inside the air intake duct. Each set of air intake holes has multiple holes. The air intake holes are opened on the middle shell and their openings are located on the side of the air outlet holes. Both are located in the corresponding air pressure chambers.

[0011] Furthermore, the second rubber stopper is aligned with the silicone bowl, and the diameter of the silicone bowl is larger than the diameter of the second rubber stopper. When the silicone bowl is in the stretching stroke, it generates an air intake effect, and gas or water enters along the air inlet channel and air inlet. The second rubber stopper deforms and the air inlet is in an open state, while the first rubber stopper resets and the air outlet is closed.

[0012] Furthermore, the fixed bracket has a number of through holes for silicone bowls equal to the number of silicone bowls, for several sets of silicone bowls to be embedded and connected to the linkage bracket.

[0013] Furthermore, the height of the extrusion column is less than the depth of the air outlet cavity.

[0014] Furthermore, the linkage bracket is shaped like a cross, and a fixing hole is provided on the outer side of the linkage bracket for the silicone bowl to be inserted.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. This quiet water-air dual-purpose pump uses a linkage bracket to synchronously drive four independent silicone cups. The rotational impact of the eccentric shaft is evenly dispersed by the four-way distributed elastic deformation, avoiding the periodic hard impact of traditional cams and metal bearings. This significantly reduces operating noise, provides high pressure, and results in a compact pump body. 2. During motor operation, the first and second silicone plugs work together. When drawing in air, the second plug deforms downwards to open the air inlet, while the first plug presses against the air outlet. When blowing air, the cup-shaped cavity of the silicone cups is compressed, and water or air is discharged through the air outlet. The first and second plugs then deform back to their sealed state, ensuring excellent sealing performance and extending the overall lifespan of the pump by more than double. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the fixing bracket of this utility model;

[0019] Figure 3 This is a schematic diagram of the shell structure of this utility model;

[0020] Figure 4 This is a schematic diagram showing the connection between the inner shell and the rubber stopper of this utility model;

[0021] Figure 5 This is a schematic diagram showing the connection between the silicone bowl and the fixed bracket of this utility model;

[0022] Figure 6 This is a schematic diagram showing the connection between the middle shell and the upper cover of this utility model;

[0023] Figure 7 This is a schematic diagram of the upper cover structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the travel cavity shell of this utility model;

[0025] Figure 9 This is a schematic diagram of the silicone bowl structure of this utility model.

[0026] In the diagram: 1. Stroke chamber housing; 2. Motor; 3. Fixed bracket; 4. Stroke chamber; 5. Silicone cup; 6. Water vapor isolation membrane; 7. Linkage bracket; 8. Top cover assembly; 81. Top cover; 82. Air inlet port; 83. Air outlet port; 84. Air inlet channel; 85. Air outlet channel; 86. Extrusion column; 87. Air outlet; 88. First rubber plug; 89. Second rubber plug; 810. Air inlet; 9. Middle shell; 10. Eccentric shaft; 11. Shaft hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-9 This embodiment describes a water-air dual-purpose pump with low operating noise, comprising a stroke chamber housing 1, a motor 2 and a fixed bracket 3 disposed at the upper and lower ends of the stroke chamber housing 1. The stroke chamber housing 1 is fixed above the motor 2 by screws. The stroke chamber housing 1 and the fixed bracket 3 have a stroke cavity 4 inside. The fixed bracket 3 is embedded with a water-air isolation membrane 6 formed by a matrix arrangement of several sets of silicone cups 5 and a linkage bracket 7 fixedly disposed below the water-air isolation membrane 6. The top of the fixed bracket 3 is provided with an upper cover assembly 8 and a middle shell 9 arranged sequentially from top to bottom. The upper cover assembly 8, the middle shell 9 and the fixed bracket 3 are fixed to the stroke chamber housing 1 through a preset through hole and by screws. The edge of the middle shell 9 presses against the water-air isolation membrane 6 to form an isolation effect on the stroke cavity 4. The openings of the several sets of silicone cups 5 are all attached to the water-air isolation membrane 6. The two opposing middle shells 9 are pressed together to form several separate air pressure chambers. The number of silicone cups 5 is set to four. The output end of the motor 2 is fixedly connected to an eccentric shaft 10. The output end of the motor 2 passes through the stroke chamber shell 1 and extends into the stroke chamber shell 1. The eccentric shaft 10 is located in the stroke chamber 4. The center of the linkage bracket 7 extends downward and is connected to the eccentric shaft 10 to form a rotatable connection. The top of the eccentric shaft 10 is near the edge and on the side of the output end shaft. The center of the linkage bracket 7 is fixedly connected to a shaft. The shaft is inserted into the shaft hole 11 and the two are rotatably connected. When the motor 2 runs, the eccentric shaft 10 is linked to the linkage bracket 7 to swing eccentrically, forming a cyclic squeezing and stretching action on several sets of silicone cups 5 on the water vapor isolation membrane 6.

[0029] In this embodiment, the upper cover assembly 8 includes an upper cover 81 disposed on the top of the middle shell 9. The upper cover 81 is provided with an air inlet port 82 and an air outlet port 83. The air inlet port 82 and the air outlet port 83 extend inward to form two mutually isolated air inlet channels 84 and air outlet channels 85. The air inlet channels 84 and the air outlet channels 85 are formed between the upper cover 81 and the middle shell 9. The air inlet channel 84 is arranged around the air outlet channel 85. The upper cover 81 is disposed above the middle shell 9. The contact points between the two are coated with sealant to increase the air tightness between the air inlet channel 84 and the air outlet channel 85.

[0030] In this embodiment, the air outlet 85 is a rectangular cavity, and a plurality of extrusion columns 86 are provided on the inner wall of the air outlet 85. The extrusion columns 86 are located on the upper cover 81, and there are gaps between the plurality of extrusion columns 86. The top of the air outlet 85 is connected to the air outlet port 83. In this embodiment, four extrusion columns 86 are provided, and the four extrusion columns 86 extend downward to abut against the first rubber stopper 88.

[0031] In this embodiment, a plurality of air outlets 87 are provided at the bottom of the air outlet 85 near the four corners. The air outlets 87 are located on the middle shell 9. The plurality of air outlets 87 are arranged opposite to a plurality of silicone bowls 5 and are located in the air pressure chamber. In this embodiment, at least four air outlets 87 are provided. The four air outlets 87 correspond to four silicone bowls 5 respectively and are located in the air pressure chamber.

[0032] In this embodiment, a first rubber plug 88 is provided in the air outlet 85, and several extrusion columns 86 press the first rubber plug 88. When the silicone cup 5 is in the extrusion stroke, gas or water enters from the air outlet 87 and pushes the first rubber plug 88. The first rubber plug 88 deforms along the gap between the several extrusion columns 86 and the air outlet 87 is in an open state.

[0033] In this embodiment, a number of second rubber plugs 89 are embedded inside the air intake duct 84. The second rubber plugs 89 are T-shaped in shape and are fixedly connected to the bottom surface of the middle shell 9. The second rubber plugs 89 are fitted to the middle shell 9. A number of sets of air intake holes 810 are opened inside the air intake duct 84. Each set of air intake holes 810 has multiple holes. The air intake holes 810 are opened on the middle shell 9 and their openings are located on one side of the air outlet 87. Both are located in the corresponding air pressure chambers.

[0034] In this embodiment, the second rubber plug 89 and the silicone bowl 5 are aligned one-to-one. The diameter of the silicone bowl is larger than the diameter of the second rubber plug. When the silicone bowl 5 is in the stretching stroke, it generates a suction effect. Gas or water enters along the air inlet 84 and the air inlet 810. The second rubber plug 89 bends towards the air pressure chamber and deforms, and the air inlet 810 is in an open state. At the same time, the first rubber plug 88 is reset and the air outlet 87 is closed.

[0035] In this embodiment, the fixed bracket 3 has a number of silicone bowl through holes equal to the number of silicone bowls 6, for several sets of silicone bowls 6 to be embedded and connected to the linkage bracket 7.

[0036] In this embodiment, the height of the extrusion column 86 is less than the depth of the inner cavity of the air outlet 85.

[0037] In this embodiment, the linkage bracket 7 is shaped like a cross, and a fixing hole for the silicone bowl 5 to be inserted is provided on the outer side of the linkage bracket 7.

[0038] Specifically, through the continuous operation of motor 2, silicone cup 5 continuously performs suction and blowing actions, thereby realizing the continuous delivery of water or gas. Due to the structure of silicone cup 5 and linkage bracket 7, as well as the driving method of eccentric shaft 10, the pump can effectively reduce noise during operation, while having a small size and large pressure, making it suitable for various application scenarios such as water pumping and air pumping.

[0039] In this embodiment, the interior of each of the four sets of silicone bowls 5 is provided with a bowl-shaped cavity.

[0040] In this embodiment, two sets of positioning posts are fixedly connected inside the air outlet 85, and the first rubber plug 88 has a positioning hole on the side near the air outlet 85 that matches the two sets of positioning posts.

[0041] The working principle of the above embodiments is as follows:

[0042] When motor 2 starts, its output drives the eccentric shaft 10 to rotate within the stroke cavity 4. The eccentric shaft 10 is connected to motor 2, which in turn drives the linkage bracket 7 and several silicone cups 5 on its water-air isolation membrane 6 to perform sequential clockwise or counterclockwise cyclic compression and stretching actions. The eccentric shaft 10 rotates with the output of motor 2, and the linkage bracket 7, as the eccentric shaft 10 rotates, performs compression or stretching actions on the corresponding silicone cups 5. When the shaft hole 11 on the eccentric shaft 10 rotates to below the corresponding silicone cup 5, this silicone cup 5 is compressed and in a blowing state, while the corresponding air pressure chamber is compressed. The other three silicone cups 5 are in a stretching and inhaling state. This cycle repeats. When motor 2 rotates rapidly, the four silicone bowls 5 can move at nearly the same frequency, such as squeezing or stretching simultaneously. At this time, the four air pressure chambers simultaneously perform suction or blowing effects. The faster the speed, the higher the operating frequency, and the greater the water or air pressure. Meanwhile, during the suction phase, the second rubber plug 89 deforms downward under the stretching suction of the silicone bowls 5, and the air inlet 82 opens. External water or gas enters the air pressure chamber of the silicone bowls 5 from the air inlet port 82 through the air inlet channel 84 and the air inlet 810. At the same time, the first rubber plug 88 remains sealed with the air outlet 87 under the stretching suction of the silicone bowls 5, preventing water or gas in the pump body from flowing out from the air outlet 12.

[0043] During the blowing stage, the first rubber plug 88 deforms along the gap between the extrusion columns 86 under the compression blowing action of the silicone cup 5, opening the air outlet 87. Water or gas in the air pressure chamber enters the air outlet 85 through the air outlet 87 and is finally discharged from the air outlet 83. At the same time, the second rubber plug 89 returns to its original shape under the stretching blowing action of the silicone cup 5, pressing the air inlet 82 to prevent water or gas from flowing back into the air inlet 84. Through the continuous operation of the motor 2, the water-air isolation membrane 6 continuously performs air intake and air blowing actions, thereby realizing the continuous delivery of water or gas.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] If this patent discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where an integral forming process is clearly not feasible). Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model.

Claims

1. A water-air dual-purpose pump with low operating noise, characterized in that: The device includes a travel chamber shell, a motor, and a fixed bracket disposed at the upper and lower ends of the travel chamber shell. The travel chamber shell and the fixed bracket have travel cavities inside. The fixed bracket is fitted with a water vapor isolation membrane formed by a matrix arrangement of several sets of silicone cups, and a linkage bracket is fixedly disposed below the water vapor isolation membrane. The top of the fixed bracket is provided with a top cover assembly and a middle shell from top to bottom. The edge of the middle shell presses against the water vapor isolation membrane to form an isolation effect on the travel cavity. The openings of the several sets of silicone cups fit against the opposite middle shells and are pressed to form several individual air pressure chambers. The output end of the motor is fixedly connected to an eccentric shaft, which is located inside the travel cavity. The center of the linkage bracket extends downward and is connected to the eccentric shaft to form a rotatable connection. When the motor is running, the eccentric shaft and the linkage bracket swing eccentrically, forming a cyclic squeezing and stretching action on the several sets of silicone cups on the water vapor isolation membrane.

2. The water-air dual-purpose pump with low operating noise according to claim 1, characterized in that: The upper cover assembly includes an upper cover disposed on the top of the middle shell. The upper cover is provided with an air inlet port and an air outlet port. The air inlet port and the air outlet port extend inward to form two mutually isolated air inlet channels and air outlet channels. The air inlet channels and the air outlet channels are formed between the upper cover and the middle shell. The air inlet channel is arranged around the air outlet channel.

3. The water-air dual-purpose pump with low operating noise according to claim 2, characterized in that: The air outlet is a rectangular cavity, and the inner wall of the air outlet is provided with a number of extrusion columns. The extrusion columns are located on the upper cover, and there are gaps between the extrusion columns. The top of the air outlet is connected to the air outlet port.

4. A water-air dual-purpose pump with low operating noise according to claim 3, characterized in that: Several air vents are provided at the bottom of the air duct near the four corners. The air vents are located on the middle shell and are arranged opposite to several sets of silicone bowls and located in the air pressure chamber.

5. A water-air dual-purpose pump with low operating noise according to claim 4, characterized in that: A first rubber plug is provided in the air outlet. The plurality of extrusion columns press the first rubber plug tightly. When the silicone cup is in the extrusion stroke, when gas or water is released from the air outlet, it pushes the first rubber plug, causing the first rubber plug to deform and the air outlet to open.

6. A water-air dual-purpose pump with low operating noise according to claim 5, characterized in that: The air intake duct is embedded with several second rubber plugs. The second rubber plugs are T-shaped in shape and are fixedly connected to the bottom surface of the middle shell. The second rubber plugs are fitted to the middle shell. The air intake duct is provided with several sets of air intake holes. Each set of air intake holes has multiple air intake holes. The air intake holes are opened on the middle shell and their openings are located on the side of the air outlet holes. Both are located in the corresponding air pressure chambers.

7. A water-air dual-purpose pump with low operating noise according to claim 6, characterized in that: The second rubber stopper is aligned with the silicone bowl. The diameter of the silicone bowl is larger than the diameter of the second rubber stopper. When the silicone bowl is in the stretching stroke, it generates an air intake effect. Gas or water enters along the air inlet and air inlet. The second rubber stopper bends towards the air pressure chamber and deforms, and the air inlet is in an open state. At the same time, the first rubber stopper resets and the air outlet is closed.

8. A water-air dual-purpose pump with low operating noise according to claim 7, characterized in that: The fixed bracket has a number of through holes for silicone bowls equal to the number of silicone bowls, for several sets of silicone bowls to be embedded and connected to the linkage bracket.

9. A water-air dual-purpose pump with low operating noise according to claim 8, characterized in that: The height of the extrusion column is less than the depth of the air outlet cavity.

10. A water-air dual-purpose pump with low operating noise according to claim 9, characterized in that: The linkage bracket is cross-shaped, and a fixing hole is provided on the outer side of the linkage bracket for the silicone bowl to be inserted.

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