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CN-224228813-U - Miniature vacuum pump

CN224228813UCN 224228813 UCN224228813 UCN 224228813UCN-224228813-U

Abstract

The utility model provides a miniature vacuum pump which comprises a pump body, a pumping component, a pump cavity, a check valve, a driving component and a miniature vacuum pump, wherein the pump body is provided with a fluid outlet and at least comprises a cover, the cover is an integral seamless component and is provided with a fluid inlet exposed outwards, the inner side end surface of the cover is provided with a communication port for communicating the fluid inlet, the pumping component is arranged in the pump body, or/and the pump body is provided with a pump cavity, the fluid inlet is in fluid communication with the pump cavity and forms an inflow path, the pump cavity is in fluid communication with the fluid outlet and forms an outflow path, the communication port is positioned on the inflow path, the pump cavity or/and the outflow path are provided with a check valve for limiting the unidirectional movement of fluid, the driving component is in transmission connection with the pumping component so as to drive the pumping component to move, the check valve is arranged in the pump body and is adjacent to the communication port, and when the miniature vacuum pump does not work, and when the miniature vacuum pump works, the check valve opens the communication port.

Inventors

  • YAN HONG

Assignees

  • 厦门坤锦电子科技有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (9)

  1. 1. A micro vacuum pump, comprising: the pump body is provided with a fluid outlet and at least comprises a cover, wherein the cover is an integrated seamless member and is provided with a fluid inlet exposed outwards, and the inner side end surface of the cover is provided with a communication port in fluid communication with the fluid inlet; the pumping component is arranged in the pump body, the pumping component or/and the pump body are/is provided with a pump cavity, the fluid inlet is in fluid communication with the pump cavity and forms an inflow path, the pump cavity is in fluid communication with the fluid outlet and forms an outflow path, and the communication port is positioned on the inflow path; a one-way valve for limiting the one-way movement of the fluid is arranged on the inflow path, the pump cavity or/and the outflow path; A driving part in driving connection with the pumping part to drive the pumping part to move, and The check valve is arranged in the pump body and adjacent to the communication port, and closes the communication port when the micro vacuum pump does not work, and opens the communication port when the micro vacuum pump works.
  2. 2. The micro vacuum pump according to claim 1, wherein the check valve is an umbrella valve, the check valve comprises an umbrella handle part fixedly mounted on the cover and a deformable umbrella face part, and the umbrella face part maintains a state of closing the communication port when the micro vacuum pump is not operated.
  3. 3. The micro vacuum pump of claim 1, wherein the check valve comprises a valve body adapted to the communication port and a spring fixedly disposed within the pump body, the spring abutting the valve body and applying a force to the valve body toward the communication port.
  4. 4. The micro vacuum pump according to claim 1, wherein the check valve is composed of a multi-flap elastic structure fixedly installed on the cover and capable of being closed, and the multi-flap elastic structure is closed and maintains a state of closing the communication port when the micro vacuum pump is not operated.
  5. 5. The micro vacuum pump according to claim 1, wherein the inner end of the cover is formed with a protrusion, the communication port is formed on the sidewall of the protrusion, the check valve is a ring-shaped diaphragm body, the diaphragm body is mounted on the outer side of the protrusion and comprises a top fixedly disposed on the cover and a bottom inclined toward the protrusion with respect to the top, and the bottom contacts the outer wall of the protrusion and maintains a state of closing the communication port when the micro vacuum pump is not operated.
  6. 6. The micro vacuum pump of claim 1, wherein the micro vacuum pump is a diaphragm vacuum pump, the micro vacuum pump further comprises a valve seat, a diaphragm seat and a motor seat sequentially arranged along an axial direction, the check valve is clamped between the cover and the valve seat, and the pumping component is mounted on the diaphragm seat.
  7. 7. The micro vacuum pump according to claim 6, wherein the cover has a protrusion located in the communication port, the check valve comprises a mounting portion for clamping the cover with the valve seat, a deformable portion located inside the mounting portion, and a vent hole provided on the deformable portion and adapted to the protrusion, the vent hole being located on the inflow path, and the vent hole contacts the protrusion and maintains a state of closing the communication port when the micro vacuum pump is not operated.
  8. 8. The micro vacuum pump according to claim 7, wherein the valve seat is provided with a convex ring and a through hole located in the convex ring, the through hole is located on the inflow path, and the check valve is mounted on the convex ring and forms a buffer cavity with the convex ring.
  9. 9. The micro vacuum pump of claim 7, wherein the inner side surface of the cover has a lip facing the valve seat, the lip being located outside the collar and pressing against the check valve.

Description

Miniature vacuum pump Technical Field The utility model relates to the technical field of micro fluid equipment, in particular to a micro vacuum pump. Background The miniature vacuum pump is a miniaturized vacuum generating device, and can generate, maintain or improve the vacuum environment in a closed space. The pump has the advantages of small volume and compact structure, is suitable for scenes with low flow and low vacuum degree, and is commonly used in the fields of medical treatment, scientific research, industry and the like. The micro vacuum pumps currently on the market at least comprise a diaphragm pump and a piston pump. The diaphragm pump changes the volume of a pump cavity by utilizing the reciprocating motion of an elastic diaphragm, has oil-free design and high cleanliness, is commonly used for medical equipment, and is applicable to industrial automation due to high pumping speed and slightly loud noise when the piston pump pumps air through the motion of the piston. However, in any type of micro vacuum pump currently on the market, there is a technical problem that the vacuum degree in the closed space is slowly reduced after the operation is stopped. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide a novel micro vacuum pump. In order to achieve the above purpose, the technical scheme is that the micro vacuum pump comprises a pump body, a pumping component and/or a pump body, wherein the pump body is provided with a fluid outlet and at least comprises a cover, the cover is an integral seamless component and is provided with a fluid inlet which is exposed outwards, the inner end face of the cover is provided with a communication port which is in fluid communication with the fluid inlet, the pumping component or/and the pump body is provided with a pumping cavity which is in fluid communication with the pumping cavity and forms an inflow path, the pumping cavity is in fluid communication with the fluid outlet and forms an outflow path, the communication port is positioned on the inflow path, the pumping cavity or/and the outflow path is provided with a one-way valve which limits the one-way movement of fluid, the pumping component is in transmission connection so as to drive the pumping component to move, the pumping component or/and the micro vacuum pump is arranged in the pump body and is adjacent to the communication port, the vacuum check valve is closed when the micro vacuum pump is not in operation, and the communication port is opened when the micro vacuum check valve is in operation. In the above technical solution, preferably, the check valve is an umbrella valve, the check valve includes an umbrella handle portion fixedly mounted on the cover and a deformable umbrella face portion, and the umbrella face portion maintains a state of closing the communication port when the micro vacuum pump is not in operation. In the above technical solution, preferably, the check valve includes a valve body adapted to the communication port and a spring fixedly disposed in the pump body, and the spring abuts against the valve body and applies a force to the valve body toward the communication port. In the above technical solution, preferably, the check valve is composed of a multi-flap elastic structure fixedly mounted on the cover and capable of being closed, and when the micro vacuum pump is not working, the multi-flap elastic structure is closed and maintains the state of closing the communication port. In the above technical solution, preferably, a protruding column is formed at an inner side end of the cover, the communication port is opened on a side wall of the protruding column, the check valve is an annular diaphragm body, the diaphragm body is mounted on an outer side of the protruding column and includes a top fixedly disposed on the cover and a bottom inclined toward the protruding column relative to the top, and when the micro vacuum pump is not in operation, the bottom contacts an outer wall of the protruding column and maintains a state of closing the communication port. In the above technical solution, preferably, the micro vacuum pump is a diaphragm vacuum pump, and further includes a valve seat, a diaphragm seat, and a motor seat sequentially disposed along an axial direction, the check valve is clamped between the cover and the valve seat, and the pumping component is mounted on the diaphragm seat. Still further preferably, the cover has a protrusion located in the communication port, the check valve includes a mounting portion for clamping the cover with the valve seat, a deformable portion located inside the mounting portion, and a vent hole opened on the deformable portion and adapted to the protrusion, the vent hole being located on the inflow path, and when the micro vacuum pump is not operated, the vent hole contacts the protrusion and the check valve maintains a state of closing the communication port. In the above pre