CN217813838U - Umbrella-shaped one-way valve for micro diaphragm pump - Google Patents
Umbrella-shaped one-way valve for micro diaphragm pump Download PDFInfo
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- CN217813838U CN217813838U CN202221971505.9U CN202221971505U CN217813838U CN 217813838 U CN217813838 U CN 217813838U CN 202221971505 U CN202221971505 U CN 202221971505U CN 217813838 U CN217813838 U CN 217813838U
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- circular ring
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Abstract
The utility model discloses an umbrella-type one-way valve used for a micro diaphragm pump, wherein an inner cavity is arranged in a base, and an air inlet nozzle and an air outlet nozzle which are communicated with the inner cavity are arranged outside the base; the air outlet nozzle is communicated with the inner cavity through an air outlet channel; a valve core and a valve seat are arranged in the air outlet channel; the side wall of the air outlet channel is provided with a first-stage step and a second-stage step; an air outlet cavity is formed between the first-stage step and the second-stage step, and the air outlet nozzle is communicated with the air outlet cavity; the valve core comprises a valve rod, a limiting part and a sealing part; the sealing part is arranged at the end part of the valve rod and is of an umbrella structure with an opening far away from the valve rod; the sealing part is arranged on the first-stage step and used for blocking the air outlet channel; the valve seat is arranged outside the valve rod and located on the second step, and the valve seat is movably sealed with the air outlet channel. Through the design, a one-way valve mechanism is formed inside the diaphragm pump, a good sealing effect, sufficient through-flow capacity and quick response characteristics are provided, and the performance of the miniature diaphragm pump is improved.
Description
Technical Field
The utility model belongs to the technical field of the micropump, specifically be an umbrella type check valve for miniature diaphragm pump.
Background
The miniature diaphragm pump is a miniature pump widely used in water industry, medical treatment, automobile, agriculture, ship and other industries. The micro diaphragm pump is provided with an air inlet nozzle and an air outlet nozzle; when the air pump is used, the diaphragm in the pump reciprocates through the mechanical device, so that micro-positive pressure is formed at the air inlet nozzle, and negative pressure or vacuum is continuously formed at the air exhaust nozzle.
The existing diaphragm pump usually adopts a plane one-way valve, and the one-way valve has the defects of poor sealing performance and high operation noise.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an umbrella type check valve for miniature diaphragm pump to solve the shortcoming that the leakproofness that the planar check valve exists on the current miniature diaphragm pump that proposes among the background art is not good, running noise is big.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
an umbrella-type one-way valve for a miniature diaphragm pump comprises a base of the miniature diaphragm pump, wherein an inner cavity is arranged in the base, and an air inlet nozzle and an air outlet nozzle which are communicated with the inner cavity are arranged outside the base;
the air outlet nozzle is communicated with the inner cavity through an air outlet channel; a valve core and a valve seat are arranged in the air outlet channel; the side wall of the air outlet channel is provided with a first-stage step and a second-stage step; an air outlet cavity is formed between the first-stage step and the second-stage step, and the air outlet nozzle is communicated with the air outlet cavity;
the valve core comprises a valve rod, a limiting part and a sealing part; the sealing part is arranged at the end part of the valve rod, and the section of the sealing part is of a wedge-shaped structure with a thick center and thin edges; the sealing part is arranged on the first-stage step and used for blocking the air outlet channel; the valve seat is arranged outside the valve rod and fixedly arranged on the second step, and a vent hole for gas circulation is formed in the valve seat.
Furthermore, the valve seat comprises a first-stage circular ring, a second-stage circular ring and a third-stage circular ring which are concentric and fixedly connected with each other, the inner diameters of the first-stage circular ring and the second-stage circular ring are the same, and the inner diameter of the third-stage circular ring is larger than the inner diameters of the first-stage circular ring and the second-stage circular ring; the limiting part is partially positioned in the third-stage circular ring.
Further, spacing portion sets up outside the valve rod, and back on spacing portion supported the disk seat in sealing, case and disk seat formed integral type structure, and sealing is used for contacting with the terminal surface of one-level step.
Furthermore, a plurality of connecting holes are formed in the base.
Further, the sealing part is made of rubber materials.
Further, the air inlet nozzle and the air outlet nozzle are arranged on the side edge of the base.
Furthermore, the thickness of the side wall of the end part, close to the air inlet nozzle and the air outlet nozzle, of the air inlet nozzle is larger than that of the end part, close to the air inlet nozzle and the air outlet nozzle, of the air outlet nozzle, and a reducer is arranged at the end part of the air inlet nozzle and the air outlet nozzle.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a check valve is provided with the sealing of umbrella type structure on the valve rod, and the sealing root of umbrella type structure is thicker, can guarantee check valve bulk strength, and the sealing outer lane of umbrella type structure is then very thin for the sealing response is sensitive, can adapt to the high-speed motion of diaphragm, and the check valve is whole under limit structure's restriction, and only the sealing takes place slight deformation motion under the air current effect, has that the leakproofness is good, the noise is low is showing characteristics.
Drawings
FIG. 1 is a schematic overall top view of the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 2;
fig. 4 is a schematic diagram of the overall structure of the micro diaphragm pump.
The mark in the figure is: the air outlet structure comprises an air outlet nozzle 1, an air inlet nozzle 2, a base 3, a valve rod 4, an inner cavity 5, a secondary step 6, a sealing part 7, an air outlet cavity 8, a tertiary ring 9, a secondary ring 10, a primary ring 11, a limiting part 12, a primary step 13 and an air outlet channel 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
An umbrella-shaped one-way valve for a micro diaphragm pump comprises a base 3 of the micro diaphragm pump, wherein the base 3 is connected to the bottom of a body of the micro diaphragm pump, an inner cavity 5 is arranged in the base 3, and an air inlet nozzle 2 and an air outlet nozzle 1 which are communicated with the inner cavity 5 are arranged outside the base 3; wherein the air inlet nozzle 2 is used for air inlet, and the air outlet nozzle 1 is used for air outlet.
The air outlet nozzle 1 is communicated with the inner cavity 5 through an air outlet channel 14; a valve core and a valve seat are arranged in the air outlet channel 14; the side wall of the air outlet channel 14 is provided with a first-stage step 13 and a second-stage step 6; an air outlet cavity 8 is formed between the first-stage step 13 and the second-stage step 6, and the air outlet nozzle 1 is communicated with the air outlet cavity 8;
the valve core comprises a valve rod 4, a limiting part 12 and a sealing part 7; the sealing part 7 is arranged at the end part of the valve rod 4, and the section of the sealing part 7 is of a wedge-shaped structure with a thick center and thin edges; the sealing part 7 is arranged on the first-stage step 13 and used for blocking the air outlet channel 14; the valve seat is arranged outside the valve rod 4 and fixedly arranged on the second step 6, and a vent hole for gas circulation is formed in the valve seat.
It should be noted that the air inlet nozzle 2 is also communicated with an air inlet channel, and a one-way valve structure similar to that in the air outlet channel 14 is also arranged in the air inlet channel.
When the micro diaphragm pump is in actual use, gas is filled into the inner cavity 5 through the gas inlet nozzle 2, (it should be noted that a one-way valve is arranged in a channel of the gas inlet nozzle 2 to prevent the gas entering the inner cavity 5 from the gas inlet nozzle 5 from flowing back from the gas inlet nozzle 2), the micro diaphragm pump pumps the gas in the inner cavity 5 into the gas outlet channel 14, the gas presses the sealing part 7 to deform, a gap is formed between the sealing part 7 and the first-stage step 13, and the gas in the gas outlet channel 14 enters the gas outlet cavity 8 through the gap and then enters the gas outlet nozzle 1 from the gas outlet cavity 8 and is discharged. When the gas flows back to the inner cavity 5 from the gas outlet nozzle 1, the sealing part 7 is pressed to be tightly attached to the end face of the first step 13, so that the sealing part 7 blocks the gas outlet channel 14 to prevent backflow.
In a preferred embodiment, the valve seat comprises a first-stage circular ring 11, a second-stage circular ring 10 and a third-stage circular ring 9 which are concentric and fixedly connected with each other, the inner diameters of the first-stage circular ring 11 and the second-stage circular ring 10 are the same, and the inner diameter of the third-stage circular ring 9 is larger than that of the first-stage circular ring and the second-stage circular ring; specifically, the inner diameter of the third-level circular ring 9 is 5mm larger than that of the first-level circular ring 11, and the inner diameter of the third-level circular ring 9 is 3mm larger than that of the second-level circular ring 10. The limiting part 12 is partially positioned in the third-stage circular ring 9. The second grade ring 10 is as the transition structure between one-level ring 11 and the tertiary ring 9, can increase the bulk strength of disk seat, and the design of tertiary ring 9 can be convenient for hold spacing portion 12 simultaneously.
In a preferred embodiment, after the limiting part 12 abuts the valve seat on the sealing part 7, the valve core and the valve seat form an integrated structure, and the sealing part 7 is used for contacting with the end face of the primary step 13. More specifically, the bottom of the valve seat is a plane, the top of the sealing portion 7 is a plane, and the limiting portion 12 abuts against the valve seat so that the bottom of the valve seat contacts with the top of the sealing portion 7 and sealing is achieved, and gas is prevented from flowing out of a gap between the valve seat and the valve rod 4.
In a preferred embodiment, the base 3 is provided with a plurality of connecting holes, and the connecting holes are used for connecting the base 3 with the body of the miniature diaphragm pump.
In a preferred embodiment, the sealing portion 7 is made of a rubber material. The rubber material can ensure that the sealing part 7 can block the air outlet channel 14 to prevent air from flowing back.
In a preferred embodiment, the air inlet nozzle 2 and the air outlet nozzle 1 are arranged at the side of the base 3, so that the utility model is convenient to be used in cooperation with other devices and is convenient to install.
In a preferred embodiment, the end parts of the air inlet nozzle 2 and the air outlet nozzle 1 are provided with a reducer. The reducer is arranged to be convenient to connect different pipelines or devices.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed", "connected", "fixed", "screwed" and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating the inside of two elements or for interacting with each other, unless otherwise specifically defined, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to the specific circumstances.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An umbrella-type one-way valve for a micro diaphragm pump comprises a base (3) of the micro diaphragm pump, wherein an inner cavity (5) is arranged in the base (3), and an air inlet nozzle (2) and an air outlet nozzle (1) which are communicated with the inner cavity (5) are arranged outside the base (3); the air outlet nozzle (1) is communicated with the inner cavity (5) through an air outlet channel (14); the method is characterized in that:
a valve core and a valve seat are arranged in the air outlet channel (14); the side wall of the air outlet channel (14) is provided with a first-stage step (13) and a second-stage step (6); an air outlet cavity (8) is formed between the first-stage step (13) and the second-stage step (6), and the air outlet nozzle (1) is communicated with the air outlet cavity (8);
the valve core comprises a valve rod (4), a limiting part (12) and a sealing part (7); the sealing part (7) is arranged at the end part of the valve rod (4), and the section of the sealing part (7) is of a wedge-shaped structure with thick center and thin edge; the sealing part (7) is arranged on the first-stage step (13) and used for blocking the air outlet channel (14); the valve seat is arranged outside the valve rod (4) and is fixedly arranged on the second-stage step (6), and a vent hole for gas circulation is formed in the valve seat.
2. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: the valve seat comprises a first-stage circular ring (11), a second-stage circular ring (10) and a third-stage circular ring (9) which are concentric and fixedly connected with each other, the inner diameters of the first-stage circular ring (11) and the second-stage circular ring (10) are the same, and the inner diameter of the third-stage circular ring (9) is larger than the inner diameters of the first-stage circular ring (11) and the second-stage circular ring (10); the limiting part (12) is partially positioned in the third-stage circular ring (9).
3. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: spacing portion (12) set up outside valve rod (4), and spacing portion (12) support the disk seat back on sealing portion (7), and the case forms integral type structure with the disk seat, and sealing portion (7) are used for contacting with the terminal surface of one-level step (13).
4. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: a plurality of connecting holes are formed in the base (3), and the base (3) can be conveniently installed on the miniature diaphragm pump body through the arranged connecting holes.
5. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: the sealing part (7) is made of rubber materials.
6. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: the air inlet nozzle (2) and the air outlet nozzle (1) are arranged on the side of the base (3).
7. An umbrella-type check valve for a micro diaphragm pump according to claim 1, wherein: the end parts of the air inlet nozzle (2) and the air outlet nozzle (1) are provided with a reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221971505.9U CN217813838U (en) | 2022-07-28 | 2022-07-28 | Umbrella-shaped one-way valve for micro diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221971505.9U CN217813838U (en) | 2022-07-28 | 2022-07-28 | Umbrella-shaped one-way valve for micro diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813838U true CN217813838U (en) | 2022-11-15 |
Family
ID=83971183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221971505.9U Active CN217813838U (en) | 2022-07-28 | 2022-07-28 | Umbrella-shaped one-way valve for micro diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813838U (en) |
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2022
- 2022-07-28 CN CN202221971505.9U patent/CN217813838U/en active Active
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