Low-noise fluid pump

Abstract

The utility model relates to a low-noise fluid pump, which belongs to the technical field of fluid pump instruments and is provided with an air inlet cavity and an air outlet cavity, and a deformable low-noise one-way valve body is arranged in an air passing through hole between the air inlet cavity and the air outlet cavity. The linkage assembly drives the fluid to flow from the air inlet cavity to the deformable low-noise one-way valve body, the fluid is driven by the linkage assembly to extrude the deformable low-noise one-way valve body to enable the deformable low-noise one-way valve body to deform and then flow into the air outlet cavity, when the driving piece stops running, the fluid does not extrude the deformable low-noise one-way valve body any more, and the deformable low-noise one-way valve body recovers to the initial state. The flow direction of the fluid is controlled in the mode that the deformable low-noise one-way valve body deforms, noise generated when the fluid impacts the deformable low-noise one-way valve body to deform can be effectively reduced, an umbrella pin structure is omitted, and therefore low-noise operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid pumps, and more specifically, to a low-noise fluid pump. Background Art

[0002] An air pump is a device used to remove air from or add air to a closed space. There are various air pumps on the market currently. Generally, it includes a power component, a piston cylinder component, an intake valve body, and an exhaust valve body. The power component drives and controls the gas to enter unidirectionally through the intake valve body and exit unidirectionally through the exhaust valve body. The working principle of the air pump is mainly based on the compression and transportation of gas. Taking an electric air pump as an example, it drives components such as pistons or blades to move through a motor, continuously compresses air, reduces the volume of air and increases the pressure, and then transports the high-pressure gas to the required place through a conduit. The application fields of air pumps are very extensive, covering almost all occasions where gas compression and transportation are required. In the industrial field, air pumps are widely used in scenarios such as tunnel ventilation, biogas digester aeration, and sewage treatment oxygenation; in the daily life field, air pumps are often used to fill balloons, inflate bicycle or car tires, etc.

[0003] With the progress of technology and the change of market demands, air pump technology is also constantly developing. Most existing air pumps use a "mushroom head" structure to restrict the unidirectional flow of fluid, but using this structure to restrict the unidirectional flow of fluid generates relatively large noise, such as the Chinese utility model patent document with the publication number "CN204961236U". Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that with the progress of technology and the change of market demands, air pump technology is also constantly developing. Most existing air pumps use a "mushroom head" structure to restrict the unidirectional flow of fluid, but using this structure to restrict the unidirectional flow of fluid generates relatively large noise, such as the Chinese utility model patent document with the publication number "CN204961236U". In view of the above defects of the prior art, a low-noise fluid pump is provided.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] Construct a low-noise fluid pump, including: a pump housing, an intake chamber and an exhaust chamber are arranged inside the pump housing, the intake chamber and the exhaust chamber are separated by a mounting plate, a gas passing through hole connecting the intake chamber and the exhaust chamber is arranged on the mounting plate, and a deformable low-noise one-way valve body is arranged at the connection of the gas passing through hole and the exhaust chamber;

[0007] A linkage assembly, which is arranged in the intake chamber and can transport the fluid in the intake chamber to the exhaust chamber;

[0008] A driving member is provided at the bottom of the pump housing. The linkage assembly is connected to the driving member and is driven by the driving member to convey fluid.

[0009] Optionally, the deformable low-noise one-way valve body includes a convex column provided at the top of the mounting plate. The air passing through hole is provided at the top of the convex column. An installation convex portion is provided in the middle of the top end of the convex column. A low-noise kit is sleeved on the outer peripheral side of the installation convex portion. The low-noise kit includes a top cover and a flexible annular blocking member protruding downward from the bottom of the top cover. An installation through hole for the installation convex portion to pass through is provided in the middle of the top cover.

[0010] Optionally, an air passing through groove connected to the air passing through hole is provided at the top of the side wall of the convex column. The length of the flexible annular blocking member is greater than the depth of the air passing through groove. The length of the flexible annular blocking member is less than the length of the convex column. The flexible annular blocking member is made of soft rubber.

[0011] Optionally, the linkage assembly includes a swing rod member and a plurality of leather cups. The top of the swing rod member is connected to the plurality of leather cups. An eccentric wheel is connected to the bottom of the swing rod member. The eccentric wheel is connected to the driving end of the driving member.

[0012] Optionally, the side walls of the plurality of leather cups are connected by a connecting plate. The connecting plate is provided with a first air inlet through hole penetrating through its top and bottom. The first air inlet through hole is communicated with the inside of the leather cup.

[0013] Optionally, an air inlet groove communicated with the outer wall thereof is provided at the bottom of the pump housing. A second air inlet through hole for communicating the air inlet groove with the air inlet cavity is provided at the bottom of the pump housing.

[0014] Optionally, the air outlet cavity includes a first chamber and a second chamber communicated with each other. The convex column is provided in the first chamber. A pressing member for pressing down and pressing the low-noise kit is provided at the top of the first chamber. A one-way valve member is provided in the second chamber.

[0015] Optionally, the one-way valve member includes a hollow cylinder provided at the top of the mounting plate. A plurality of air inlet openings are provided on the side wall of the hollow cylinder. An assembly through hole is provided at the top of the hollow cylinder. An umbrella-shaped member is penetrated through the assembly through hole. A groove opposite to the hollow cylinder is provided at the top of the mounting plate.

[0016] Optionally, an air outlet pipe is provided at the top of the second chamber. The second chamber is communicated with the air outlet pipe.

[0017] Optionally, the pump housing includes a top shell, a middle shell, and a bottom shell arranged in sequence from top to bottom. The mounting plate is disposed between the top shell and the middle shell. An assembly groove is provided at the top of the middle shell, and the connecting plate is disposed in the assembly groove.

[0018] The beneficial effects of the present utility model are as follows:

[0019] The present utility model is provided with an air inlet cavity and an air outlet cavity, and a deformable low-noise one-way valve body is arranged in the air passage through hole between the air inlet cavity and the air outlet cavity. When the present utility model is used, the driving member is started, and the driving member drives the linkage assembly to rotate. The linkage assembly drives the fluid to flow from the air inlet cavity to the deformable low-noise one-way valve body. The fluid squeezes the deformable low-noise one-way valve body under the drive of the linkage assembly to deform it and then flows into the air outlet cavity. When the driving member stops operating, the fluid no longer squeezes the deformable low-noise one-way valve body, and the deformable low-noise one-way valve body returns to its initial state, blocking the air passage through hole to prevent the fluid in the air outlet cavity from flowing back into the air inlet cavity. The present utility model controls the flow direction of the fluid by deforming the deformable low-noise one-way valve body, which can effectively reduce the noise generated when the fluid impacts the deformable low-noise one-way valve body during deformation, cancels the umbrella nail structure, and thus realizes low-noise operation. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further explain the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0021] Figure 1 is the overall exploded schematic diagram of the present utility model.

[0022] Figure 2 is in the present utility model Figure 1 The enlarged schematic diagram of part A.

[0023] Figure 3 is the enlarged schematic diagram of the one-way valve member of the present utility model.

[0024] Figure 4 is the enlarged schematic diagram of the linkage assembly of the present utility model.

[0025] Figure 5 is the overall front schematic diagram of the present utility model.

[0026] Figure 6 is in the present utility model along Figure 5 The schematic diagram cut along the B-B line.

[0027] Figure 7It is another front view diagram of the present utility model.

[0028] Figure 8 It is a sectional view taken along the C-C line of Figure 6 in the present utility model.

[0029] Figure 9 It is a bottom view of the top shell in the present utility model.

[0030] Figure 10 It is a bottom view of the bottom shell in the present utility model.

[0031] The reference numerals are as follows:

[0032] 100, pump housing; 101, air inlet chamber; 102, air outlet chamber; 102.1, first chamber; 102.11, pressing member; 102.2, second chamber; 103, air inlet groove; 104, second air inlet through hole; 105, top shell; 106, middle shell; 106.1, assembly groove; 107, bottom shell;

[0033] 200, linkage assembly; 201, swing rod member; 202, leather cup; 203, eccentric wheel; 204, connecting plate; 204.1, first air inlet through hole;

[0034] 300, driving member;

[0035] 400, mounting plate; 401, air passing through hole; 402, air passing through groove;

[0036] 500, deformable low-noise one-way valve body; 501, convex column; 502, mounting convex portion; 503, low-noise kit; 503.1, top cover; 503.2, flexible annular blocking member; 503.3, mounting through hole;

[0037] 600, one-way valve member; 601, hollow column body; 602, air inlet opening; 603, assembly through hole; 604, umbrella-shaped member; 605, groove;

[0038] 700, air outlet pipe. Specific embodiments

[0039] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0040] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0041] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] The embodiments of the present utility model are as follows Figures 1 - 10As shown in the figure, it relates to a low-noise fluid pump, including a pump housing 100, a linkage assembly 200, and a driving member 300. An air inlet chamber 101 and an air outlet chamber 102 are provided in the pump housing 100. The air inlet chamber 101 and the air outlet chamber 102 are separated by a mounting plate 400. An air passing through hole 401 that connects the air inlet chamber 101 and the air outlet chamber 102 is provided on the mounting plate 400. A deformable low-noise one-way valve body 500 is provided at the connection of the air passing through hole 401 and the air outlet chamber 102. The linkage assembly 200 is arranged in the air inlet chamber 101 and can transport the fluid in the air inlet chamber 101 to the air outlet chamber 102. The driving member 300 is arranged at the bottom of the pump housing 100. The linkage assembly 200 is connected to the driving member 300 and is driven by the driving member 300 to transport the fluid. Further, in the present utility model, by providing an air inlet chamber 101 and an air outlet chamber 102, and a deformable low-noise one-way valve body 500 is provided in the air passing through hole 401 between the air inlet chamber 101 and the air outlet chamber 102. When the present utility model is used, the driving member 300 is started, the driving member 300 drives the linkage assembly 200 to rotate, the linkage assembly 200 drives the fluid to flow from the air inlet chamber 101 to the deformable low-noise one-way valve body 500, and the fluid squeezes the deformable low-noise one-way valve body 500 under the drive of the linkage assembly 200 to deform it and then flows into the air outlet chamber 102. When the driving member 300 stops operating, the fluid no longer squeezes the deformable low-noise one-way valve body 500, and the deformable low-noise one-way valve body 500 returns to its initial state, blocking the air passing through hole 401 to prevent the fluid in the air outlet chamber 102 from flowing back into the air inlet chamber 101. The present utility model controls the flow direction of the fluid by deforming the deformable low-noise one-way valve body 500, which can effectively reduce the noise generated when the fluid impacts the deformable low-noise one-way valve body 500 during deformation, thereby achieving low-noise operation. Optionally, the driving member 300 is a motor.

[0044] Refer to Figures 1 - 4 、 Figure 6, in this embodiment, the deformable low-noise one-way valve body 500 includes a convex column 501 disposed on the top of the mounting plate 400. The air passing through hole 401 is disposed on the top of the convex column 501. An installation convex portion 502 is disposed in the middle of the top end of the convex column 501. A low-noise kit 503 is sleeved on the outer peripheral side of the installation convex portion 502. The low-noise kit 503 includes a top cover 503.1 and a flexible annular blocking member 503.2 protruding downward from the bottom of the top cover 503.1. An installation through hole 503.3 for the installation convex portion 502 to pass through is disposed in the middle of the top cover 503.1. Further, an air passing through groove 402 connected to the air passing through hole 401 is disposed at the top of the side wall of the convex column 501. The length of the flexible annular blocking member 503.2 is greater than the depth of the air passing through groove 402, and the length of the flexible annular blocking member 503.2 is less than the length of the convex column 501. During use, the fluid in the intake cavity 101 squeezes the flexible annular blocking member 503.2 to deform it outward under the cooperation of the driving member 300 and the linkage assembly 200, so as to allow the fluid to flow into the outlet cavity 102. When not in use, the fluid no longer squeezes the flexible annular blocking member 503.2, and the flexible annular blocking member 503.2 returns to its initial state, covering the air passing through groove 402 to prevent the fluid in the outlet cavity 102 from flowing back into the intake cavity 101. The installation convex portion 502 passes through the installation through hole 503.3 of the low-noise kit 503. This design ensures the assembly stability between the components of the valve member, reduces the possibility of the low-noise kit 503 being skewed, and thus ensures that the low-noise kit 503 can prevent the fluid in the outlet cavity 102 from flowing back into the intake cavity 101. When the fluid flows out from the air passing through groove 402 through the air passing through hole 401, the flexible annular blocking member 503.2 can absorb and disperse the noise generated by the fluid impact, thereby reducing the turbulence and impact during the fluid flow process, and thus reducing the noise level. And because the flexible annular blocking member 503.2 has a certain elasticity and deformability, it can adapt to the fluid flow state under different flow rates and pressures, so that the valve member can maintain good working performance and stability under various working conditions. In this embodiment, four air passing through holes 401 and air passing through grooves 402 are provided in a matching manner.

[0045] Refer to Figures 1 - 4 , Figure 6 , Figure 8, in this embodiment, the linkage assembly 200 includes a swing rod member 201 and a plurality of leather cups 202. The top of the swing rod member 201 is connected to the plurality of leather cups 202. The bottom of the swing rod member 201 is connected to an eccentric wheel 203, and the eccentric wheel 203 is connected to the driving end of the driving member 300. Further, the side walls of the plurality of leather cups 202 are connected by a connecting plate 204. The connecting plate 204 is provided with a first air intake through hole 204.1 penetrating through its top and bottom, and the first air intake through hole 204.1 is communicated with the inside of the leather cup 202. Specifically, the eccentric wheel 203 is connected to the driving end of the driving member 300. When the driving member 300 operates, the eccentric wheel 203 will rotate accordingly. This design can efficiently transmit the rotational motion of the driving member 300 to the swing rod member 201 to achieve the conversion and transmission of energy. The top of the swing rod member 201 is connected to the plurality of leather cups 202. This structure enables the swing rod member 201 to generate stable swings under the drive of the eccentric wheel 203. The leather cup 202, as a component directly in contact with the fluid, its stable swing helps to achieve the precise transportation of the fluid. The side walls of the plurality of leather cups 202 are connected by the connecting plate 204, and the first air intake through hole 204.1 on the connecting plate 204 is communicated with the inside of the leather cup 202, which not only ensures the smooth flow of the fluid but also realizes the precise control of the fluid flow direction. The first air intake through hole 204.1 on the connecting plate 204 not only provides a channel for the fluid but also helps to achieve the balance of the fluid pressure inside the leather cup 202. Optionally, four leather cups 202 are provided.

[0046] In this embodiment, an air intake groove 103 communicated with its outer wall is provided at the bottom of the pump housing 100, and a second air intake through hole 104 communicating the air intake groove 103 with the air intake cavity 101 is provided at the bottom of the pump housing 100. The external fluid flows to the second air intake through hole 104 through the air intake groove 103 and flows into the air intake cavity 101 through the second air intake through hole 104.

[0047] Refer to Figures 1 - 10, in this embodiment, the air outlet cavity 102 includes a first chamber 102.1 and a second chamber 102.2 that are connected and communicate with each other. The convex column 501 is disposed in the first chamber 102.1. A pressing member 102.11 for pressing down and tightly pressing the low-noise kit 503 is provided at the top of the first chamber 102.1. A one-way valve member 600 is disposed in the second chamber 102.2. Further, the one-way valve member 600 includes a hollow cylinder 601 disposed on the top of the mounting plate 400. A plurality of air inlet openings 602 are provided on the side wall of the hollow cylinder 601. An assembly through hole 603 is provided at the top of the hollow cylinder 601. A mushroom-shaped member 604 is inserted through the assembly through hole 603. A groove 605 opposite to the hollow cylinder 601 is provided on the top of the mounting plate 400. Specifically, the communication design between the first chamber 102.1 and the second chamber 102.2 enables the air flow to smoothly flow between the two chambers, and at the same time facilitates the distribution and adjustment of the air flow. The setting of the convex column 501 not only provides an installation basis for the low-noise kit 503, but also realizes the stable pressing of the low-noise kit 503 through the pressing member 102.11, ensuring the stability of the low-noise kit 503. The plurality of air inlet openings 602 provided on the side wall of the hollow cylinder 601 are beneficial to the uniform entry of gas from multiple directions, improving the air intake efficiency. The mushroom-shaped member 604 inserted through the assembly through hole 603 can prevent the backflow of fluid, and through the close cooperation of the mounting plate 400, the hollow cylinder 601 and the groove 605, the air intake efficiency is improved.

[0048] In this embodiment, an air outlet pipe 700 is provided at the top of the second chamber 102.2. The second chamber 102.2 is connected and communicates with the air outlet pipe 700. The fluid in the second chamber 102.2 is connected and communicates with the air outlet pipe 700 through the one-way valve member 600.

[0049] In this embodiment, the pump housing 100 includes a top shell 105, a middle shell 106, and a bottom shell 107 that are sequentially arranged from top to bottom. The mounting plate 400 is disposed between the top shell 105 and the middle shell 106. An assembly groove 106.1 is provided at the top of the middle shell 106. The connecting plate 204 is disposed in the assembly groove 106.1. Specifically, the mounting plate 400 is located between the top shell 105 and the middle shell 106, playing a role in enhancing the support and further improving the overall stability of the pump housing 100. The assembly groove 106.1 at the top of the middle shell 106 provides a clear installation position for the connecting plate 204, making the assembly process more simple and fast. The layering enables each part of the pump housing 100 to be assembled and maintained separately, reducing the maintenance difficulty and cost.

[0050] It should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

1. A low-noise fluid pump, characterized in that: include: A pump housing (100), wherein an air inlet cavity (101) and an air outlet cavity (102) are arranged in the pump housing (100), the air inlet cavity (101) and the air outlet cavity (102) are separated by a mounting plate (400), the mounting plate (400) is provided with an air through hole (401) connecting the air inlet cavity (101) and the air outlet cavity (102), and a deformable low-noise one-way valve body (500) is arranged at the connection point between the air through hole (401) and the air outlet cavity (102); A linkage assembly (200), wherein the linkage assembly (200) is disposed in the air inlet cavity (101) and can transport the fluid in the air inlet cavity (101) to the air outlet cavity (102); The driving member (300) is arranged at the bottom of the pump housing (100), and the linkage assembly (200) is connected to the driving member (300) and is driven by the driving member (300) to transport fluid.

2. A low noise fluid pump according to claim 1, characterized in that: The deformable low-noise one-way valve body (500) comprises a boss (501) arranged on the top of the mounting plate (400), the air through hole (401) is arranged on the top of the boss (501), a mounting protrusion (502) is arranged in the middle of the top end of the boss (501), a low-noise kit (503) is sleeved on the outer peripheral side of the mounting protrusion (502), the low-noise kit (503) comprises a top cover (503.1) and a flexible annular blocking member (503.2) arranged at the bottom of the top cover (503.1) and protruding downward, and a mounting through hole (503.3) for the mounting protrusion (502) to pass through is arranged in the middle of the top cover (503.1).

3. A low noise fluid pump according to claim 2, characterized in that: A ventilation groove (402) connected to the ventilation hole (401) is provided at the top of the side wall of the convex column (501); the length of the flexible annular blocking member (503.2) is greater than the depth of the ventilation groove (402); the length of the flexible annular blocking member (503.2) is less than the length of the convex column (501); and the flexible annular blocking member (503.2) is made of soft rubber.

4. A low noise fluid pump according to claim 1, characterized in that: The linkage assembly (200) comprises a rocker member (201) and a plurality of leather cups (202); the top of the rocker member (201) is connected to the plurality of leather cups (202); the bottom of the rocker member (201) is connected to an eccentric wheel (203); and the eccentric wheel (203) is connected to a driving end of the driving member (300).

5. A low noise fluid pump according to claim 4, characterized in that: The side walls of the plurality of leather cups (202) are connected via a connecting plate (204), and the connecting plate (204) is provided with a first air inlet hole (204.1) penetrating the top and bottom thereof, and the first air inlet hole (204.1) is connected to the interior of the leather cup (202).

6. A low noise fluid pump according to claim 1, characterized in that: The bottom of the pump housing (100) is provided with an air intake groove (103) connected to its outer wall, and the bottom of the pump housing (100) is provided with a second air intake hole (104) connecting the air intake groove (103) and the air intake cavity (101).

7. A low noise fluid pump according to claim 2, characterized in that: The air outlet cavity (102) comprises a first chamber (102.1) and a second chamber (102.2) which are connected to each other, the convex column (501) is arranged in the first chamber (102.1), the top of the first chamber (102.1) is provided with a pressing member (102.11) for pressing down and tightly pressing the low-noise kit (503), and the second chamber (102.2) is provided with a one-way valve member (600).

8. A low noise fluid pump according to claim 7, characterized in that: The one-way valve member (600) comprises a hollow cylinder (601) arranged on the top of the mounting plate (400); a plurality of air inlet openings (602) are arranged on the side wall of the hollow cylinder (601); a mounting through hole (603) is arranged on the top of the hollow cylinder (601); an umbrella member (604) is passed through the mounting through hole (603); and a groove (605) opposite to the hollow cylinder (601) is arranged on the top of the mounting plate (400).

9. A low noise fluid pump according to claim 7, characterized in that: An air outlet pipe (700) is provided at the top of the second chamber (102.2), and the second chamber (102.2) is in communication with the air outlet pipe (700).

10. A low noise fluid pump according to claim 5, characterized in that: The pump housing (100) comprises a top housing (105), a middle housing (106) and a bottom housing (107) which are arranged in sequence from top to bottom; the mounting plate (400) is arranged between the top housing (105) and the middle housing (106); a mounting groove (106.1) is arranged at the top of the middle housing (106); and the connecting plate (204) is arranged in the mounting groove (106.1).

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