CN116378927B - Self-relieving negative pressure pump structure and breast pump - Google Patents

Self-relieving negative pressure pump structure and breast pump Download PDF

Info

Publication number
CN116378927B
CN116378927B CN202310393717.6A CN202310393717A CN116378927B CN 116378927 B CN116378927 B CN 116378927B CN 202310393717 A CN202310393717 A CN 202310393717A CN 116378927 B CN116378927 B CN 116378927B
Authority
CN
China
Prior art keywords
air
eccentric wheel
pressure relief
negative pressure
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310393717.6A
Other languages
Chinese (zh)
Other versions
CN116378927A (en
Inventor
向连玉
高栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Skoocom Electronic Co ltd
Original Assignee
Shenzhen Skoocom Electronic Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Skoocom Electronic Co ltd filed Critical Shenzhen Skoocom Electronic Co ltd
Priority to CN202310393717.6A priority Critical patent/CN116378927B/en
Publication of CN116378927A publication Critical patent/CN116378927A/en
Application granted granted Critical
Publication of CN116378927B publication Critical patent/CN116378927B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/06—Milking pumps
    • A61M1/062—Pump accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Pediatric Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • External Artificial Organs (AREA)

Abstract

The invention provides a self-pressure relief type negative pressure pump structure and a breast pump, comprising a cylinder sleeve, a pump body, a power device, an eccentric wheel and balls. An air cavity is formed inside the cylinder sleeve, and an air suction port communicated with the air cavity is arranged at the lateral direction. The pump body is arranged at the upper end of the cylinder sleeve and is used for pumping the gas in the air cavity upwards. The power device is arranged at the lower end of the cylinder sleeve. The eccentric wheel is driven and connected with the power device, so that the eccentric wheel can be eccentrically and rotatably arranged in the air cavity along the axis extending in the vertical direction under the drive of the power device, a pressure relief air channel is formed on the eccentric wheel, one end of the pressure relief air channel is communicated with the air cavity, the other end of the pressure relief air channel is communicated with the outside, the pressure relief air channel is provided with a channel section extending along the radial direction of the eccentric wheel, and the channel section is outwards penetrated with the eccentric wheel to form a pressure relief hole. The balls are rollingly disposed within the channel section. When the eccentric wheel rotates, the balls move outwards in the radial direction due to centrifugal force, the pressure release air channel is closed, air flow enters the air cavity from the air inlet, and when the eccentric wheel is static, the balls are separated from the pressure release hole, and the air flow enters the air cavity from the outside.

Description

Self-pressure relief type negative pressure pump structure and breast pump
Technical Field
The invention relates to the technical field of negative pressure pumps, in particular to a self-pressure relief type negative pressure pump structure and a breast pump.
Background
Under the current trend, more and more parents are aware of the benefits of breast feeding for healthy growth of children. At the same time, the market has developed breast pumps that can be used to dredge the breast and collect breast milk, and the conventional arrangement of these pumps is to provide a negative pressure pump in the pump housing that provides suction to the milk. In order to increase the comfort of the breast pump, the breast pump is further provided with a pressure release valve matched with the negative pressure pump, so that the air pressure in the breast pump is regulated to normal air pressure after the operation of the negative pressure pump is finished each time, and the user is prevented from being subjected to continuous suction.
However, the negative pressure pump and the pressure release valve are arranged in the breast pump as two independent components, occupy redundant accommodating space, and need to be controlled by using two sets of control circuits and power supply circuits, so that the structure of the breast pump is not sufficiently simplified.
Disclosure of Invention
The invention mainly aims to provide a self-pressure-relief type negative pressure pump structure, and aims to provide the self-pressure-relief type negative pressure pump structure capable of automatically relieving pressure.
In order to achieve the above object, the present invention provides a self-pressure relief negative pressure pump structure, comprising:
The cylinder sleeve is internally provided with an air cavity, and the cylinder sleeve is laterally provided with an air suction port communicated with the air cavity;
The pump body is arranged at the upper end of the cylinder sleeve and is used for pumping the gas in the air cavity upwards;
the power device is arranged at the lower end of the cylinder sleeve;
The eccentric wheel is in driving connection with the power device so as to be eccentrically and rotatably arranged in the air cavity along an axis extending in the up-down direction under the drive of the power device, a pressure relief air passage is formed on the eccentric wheel, one end of the pressure relief air passage is communicated with the air cavity, the other end of the pressure relief air passage is communicated to the outside, the pressure relief air passage is provided with a passage section extending along the radial direction of the eccentric wheel, the passage section is outwards penetrated with the eccentric wheel to form a pressure relief hole, and
A ball rollably disposed within the channel section;
When the eccentric wheel rotates, the balls are acted by centrifugal force to move outwards along the radial direction of the eccentric wheel so as to be in sealing contact with the pressure relief hole, thereby closing the pressure relief air passage, and air flow enters the air cavity from the air suction port;
when the eccentric wheel is static, the centrifugal force born by the ball disappears and then breaks away from and abuts against the pressure relief hole, so that the pressure relief air passage is opened, and air flow enters the air cavity from the outside.
Preferably, the pump body is a diaphragm pump.
Preferably, the diaphragm pump comprises:
An eccentric shaft portion;
A swing frame part, on which a plurality of air bowls are formed, all of which are recessed downward, and
The surface of the diaphragm part is provided with a one-way air hole corresponding to the air bowl, the eccentric wheel, the eccentric shaft part and the turning machine part are sequentially and upwards in driving connection, the diaphragm part is movably abutted and sealed and abutted above any air bowl, and the diaphragm part is provided with a one-way air hole corresponding to any air bowl;
the air bowl is used for extruding air in the air cavity through the one-way air hole.
Preferably, the material of the diaphragm portion includes at least one of rubber, silica gel, and PVC.
Preferably, the diaphragm portion has a valve plate formed thereon, the valve plate being in sealing abutment with the diaphragm portion main body, the valve plate penetrating the diaphragm portion main body in the up-down direction and being formed on itself with upper and lower end surfaces of unequal areas, the upper end surface of the valve plate having an area larger than the lower end surface of the valve plate, the peripheral surface of the valve plate being in sealing abutment with the diaphragm portion main body;
The area of the upper surface of the air valve plate is larger than that of the lower surface of the air valve plate, so that the air valve plate can only be opened to open an upward exhaust channel.
Preferably, the periphery of the diaphragm part is in sealing connection with the cylinder sleeve.
Preferably, the lower end surface of the eccentric is in sealing abutment and is rotatably mounted on the bottom wall of the cylinder liner.
Preferably, the power plant comprises an electric motor.
Preferably, at least one of the eccentric and the ball is made of a metal material.
The invention also provides a breast pump, which comprises a first theme, and the self-pressure relief type negative pressure pump structure comprises:
The cylinder sleeve is internally provided with an air cavity, and the cylinder sleeve is laterally provided with an air suction port communicated with the air cavity;
The pump body is arranged at the upper end of the cylinder sleeve and is used for pumping the gas in the air cavity upwards;
the power device is arranged at the lower end of the cylinder sleeve;
The eccentric wheel is in driving connection with the power device so as to be eccentrically and rotatably arranged in the air cavity along an axis extending in the up-down direction under the drive of the power device, a pressure relief air passage is formed on the eccentric wheel, one end of the pressure relief air passage is communicated with the air cavity, the other end of the pressure relief air passage is communicated to the outside, the pressure relief air passage is provided with a passage section extending along the radial direction of the eccentric wheel, the passage section is outwards penetrated with the eccentric wheel to form a pressure relief hole, and
A ball rollably disposed within the channel section;
When the eccentric wheel rotates, the balls move outwards in the radial direction to be in sealing contact with the pressure relief holes, so that the pressure relief air passage is closed, and air flow enters the air cavity from the air suction port;
when the eccentric wheel is static, the ball is separated from and abutted against the pressure relief hole so as to open the pressure relief air passage, and air flow enters the air cavity from the outside.
In the technical scheme of the invention, when the power device operates, the power device drives the eccentric wheel to rotate, and the eccentric wheel further drives the pump body to upwards pump out the gas in the air cavity, so that negative pressure is formed in the air cavity, and the self-pressure relief type negative pressure pump structure can suck the gas from the air suction port to generate suction force to the outside. Meanwhile, the balls roll outwards due to centrifugal force until the balls are in sealing contact with the pressure relief holes, so that the inner cavity and the outside atmosphere at two ends of the pressure relief air channel are isolated from each other. When the power device stops running, the pump body does not run any more, the eccentric wheel does not rotate any more, the ball is not subjected to centrifugal force acting on the ball, and then the ball is separated from the pressure release hole, so that the pressure release air passage is in a communicating state so as to enable the air cavity to be communicated with the outside atmosphere, and the outside air enters the air cavity through the pressure release air passage, so that the air pressure in the air cavity is changed from negative pressure to normal pressure. As described above, the technical scheme provided by the invention simplifies the functions of the negative pressure pump and the external pressure relief valve into one self-pressure relief type negative pressure pump structure, and allows a user to select a more simplified alternative scheme when the negative pressure pump and the external pressure relief valve are required to be used simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of an embodiment of a self-pressure relief negative pressure pump structure according to the present invention;
FIG. 2 is a schematic view of the self-venting negative pressure pump structure of FIG. 1 illustrating airflow during operation of the power plant;
Fig. 3 is a schematic airflow diagram of the self-pressure relief type negative pressure pump structure in fig. 1 when the power device stops operating.
Reference numerals illustrate:
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present invention) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Under the current trend, more and more parents are aware of the benefits of breast feeding for healthy growth of children. At the same time, the market has developed breast pumps that can be used to dredge the breast and collect breast milk, and the conventional arrangement of these pumps is to provide a negative pressure pump in the pump housing that provides suction to the milk. In order to increase the comfort of the breast pump, the breast pump is further provided with a pressure release valve matched with the negative pressure pump, so that the air pressure in the breast pump is regulated to normal air pressure after the operation of the negative pressure pump is finished each time, and the user is prevented from being subjected to continuous suction.
However, the negative pressure pump and the pressure release valve are arranged in the breast pump as two independent components, occupy redundant accommodating space, and need to be controlled by using two sets of control circuits and power supply circuits, so that the structure of the breast pump is not sufficiently simplified.
In order to solve the above-mentioned problems, the present invention provides a self-pressure-releasing negative pressure pump structure, and is directed to a self-pressure-releasing negative pressure pump structure capable of automatically releasing pressure, and fig. 1 to 3 are schematic structural diagrams of an embodiment of the self-pressure-releasing negative pressure pump structure of the present invention.
Referring to fig. 1 to 3, the present invention provides a self-pressure relief negative pressure pump structure 100, which includes a cylinder liner 1, a pump body 2, a power device 3, an eccentric wheel 4 and balls 5. An air cavity is formed inside the cylinder sleeve 1, and an air suction port 11 communicated with the air cavity is arranged on the lateral side of the cylinder sleeve. The pump body 2 is arranged at the upper end of the cylinder sleeve 1 and is used for pumping the gas in the air cavity upwards. The power device 3 is arranged at the lower end of the cylinder sleeve 1. The eccentric wheel 4 is in driving connection with the power device 3, so that the eccentric wheel can be eccentrically and rotatably installed in the air cavity along an axis extending in the vertical direction under the driving of the power device 3, a pressure relief air channel is formed in the eccentric wheel 4, one end of the pressure relief air channel is communicated with the air cavity, the other end of the pressure relief air channel is communicated to the outside, the pressure relief air channel is provided with a channel section extending along the radial direction of the eccentric wheel 4, and the channel section outwards penetrates through the eccentric wheel 4 to form a pressure relief hole. And the balls 5 are rollably disposed within the channel section. When the eccentric wheel 4 rotates, the balls 5 are subjected to centrifugal force to move outwards along the radial direction of the eccentric wheel so as to be in sealing contact with the pressure relief holes, thereby closing the pressure relief air passage, air flow enters the air cavity from the air suction port 11, and when the eccentric wheel 4 is static, the centrifugal force borne by the balls 5 disappears so as to be separated from and contact with the pressure relief holes, so that the pressure relief air passage is opened, and the air flow enters the air cavity from the outside.
In the technical scheme of the invention, when the power device 3 operates, the power device 3 drives the eccentric wheel 4 to rotate, and the eccentric wheel 4 further drives the pump body 2 to upwards pump the air in the air cavity, so that negative pressure is formed in the air cavity, and the self-pressure relief type negative pressure pump structure 100 can suck the air from the air suction port 11 to generate suction force to the outside. At the same time, the balls 5 roll outwards due to centrifugal force until the balls are in sealing contact with the pressure relief holes, so that the inner cavity and the external atmosphere at two ends of the pressure relief air passage are isolated from each other. When the power device 3 stops running, the pump body 2 does not run any more, the eccentric wheel 4 does not rotate any more, the ball 5 is not subjected to centrifugal force acting on the ball, and then the ball 5 is separated from the pressure release hole, so that the pressure release air passage is in a communication state so as to enable the air cavity to be communicated with the outside atmosphere, and the outside air enters the air cavity through the pressure release air passage, so that the air pressure in the air cavity is changed from negative pressure to normal pressure. As described above, the technical solution proposed by the present invention simplifies the functions of the negative pressure pump and the external relief valve into one of the self-relieving negative pressure pump structures 100, allowing the user to select a more simplified alternative when the negative pressure pump and the external relief valve need to be used simultaneously.
The self-pressure-relief type negative pressure pump structure 100 not only can save the required installation space in the product, but also can simultaneously control the two functions of air suction and pressure relief of the self-pressure-relief type negative pressure pump structure 100 by only controlling the operation of the power device 3 because the air release mode is related to the operation state of the power device 3. Thus, only one set of control circuitry and one set of power components are needed to achieve the suction and discharge of the self-venting negative pressure pump structure 100, and no separate control and power to the discharge valve and negative pressure pump is needed.
In an embodiment of the present invention, a cavity is formed at one radial end of the eccentric wheel 4, the cavity is communicated with the air cavity through a first air hole formed on the peripheral surface of the eccentric wheel 4, the air cavity is communicated with an air channel in the power device 3 through a second air hole formed on the bottom surface of the eccentric wheel 4, the air channel is arranged in the power device 3 and is communicated with the air cavity and the external environment, and the first air hole, the cavity and the second air hole jointly form the pressure relief air channel. Of course, 4 or 8 air holes may be provided for connecting the cavity with the outside, and a gap may be formed between the power device 3 and the cylinder liner 1, so that the pressure relief air passage is directly connected with the atmosphere.
The pump body 2 may include a piston pump, may include a peristaltic pump, and is not limited in this regard, and in an embodiment of the present invention, the pump body 2 is a diaphragm pump. The diaphragm pump is adopted to keep the exhaust amount continuously stable, and the generated abrupt change of the suction force is avoided, so that the use experience is influenced.
To ensure that a negative pressure is created in the air chamber, in one embodiment of the invention the diaphragm pump comprises an eccentric shaft portion 21, a swing frame portion 22 and a diaphragm portion 23. The swing frame 22 is formed with a plurality of air bowls 231, and all the air bowls 231 are recessed downward. The surface of the diaphragm part 23 is provided with a one-way air hole corresponding to the air bowl 231, the eccentric wheel 4, the eccentric shaft part 21 and the turning machine part are sequentially and upwards connected in a driving mode, the diaphragm part 23 is movably abutted and sealed and abutted to any one of the air bowls 231, and the diaphragm part 23 is provided with a one-way air hole corresponding to any one of the air bowls 231. Wherein, the air bowl 231 is used for pressing out the air in the air cavity through the unidirectional air hole. The eccentric shaft 21 swings with the operation of the power device 3, and the swing of the eccentric shaft 21 drives the swing frame 22 to swing, so that the air bowls 231 on the swing frame 22 sequentially move up and down according to the circumferential direction of the swing frame 22, and the air bowls 231 sequentially exhaust the air outside the diaphragm 23. The eccentric rod may be integrally formed, so that the swing frame 22 swings along the vertical direction while being axially rotated, at this time, any one of the air bowls 231 may abut against the unidirectional air holes at different positions when sealing and abutting against the diaphragm 23, the eccentric rod may also be divided into a sleeve section and a main rod section, which are opposite, and the sleeve section is rotatably sleeved on the main rod section, and the sleeve section rotates about its own axial direction as an axis relative to the main rod section, so that the swing frame 22 swings only along with the eccentric rod, and any one of the air bowls 231 always corresponds to the unidirectional hole fixed in the vertical direction, which is not limited in the invention. The sleeve section may be connected to the eccentric 4 and the main rod section is connected to the swing frame 22, and the sleeve section may also be connected to the swing frame 22 and the main rod section is connected to the eccentric 4, which is not limited in this regard.
In order to enable the air bowl 231 to elastically deform, in an embodiment of the present invention, the air bowl 231 is made of at least one of rubber, PVC, and silica gel.
In order to increase the unidirectional air tightness of the unidirectional hole, in an embodiment of the present invention, the material of the diaphragm portion 23 includes at least one of rubber, silica gel, and PVC.
The one-way hole may be formed between the valve and the main body of the diaphragm part 23, may be formed on the diaphragm part 23, and a sealing cover is disposed above the diaphragm part 23, and is in transmission connection with the air bowl 231, so that the sealing cover moves up and down along with the movement of the air bowl 231, and the two states of sealing the sealing cover against the one-way hole and separating from the one-way hole upwards are achieved, which is not limited in the invention, in an embodiment of the present invention, the diaphragm portion 23 is formed with a valve plate having a seal abutting against the diaphragm portion 23 main body, the valve plate penetrating the diaphragm portion 23 main body in the up-down direction and being formed with upper and lower end surfaces having unequal areas on itself, the upper end surface of the valve plate having an area larger than the lower end surface of the valve plate, the peripheral surface of the valve plate abutting against the diaphragm portion 23 main body in a seal. The upper surface area of the valve plate is larger than the lower surface area of the valve plate so that the diaphragm portion 23 body blocks the downward movement of the valve plate, and allows the upward movement of the valve plate, so that the valve plate is exhausted unidirectionally. The air valve plate may be in a strip shape, wherein one end of the air valve plate is integrally connected with the main body of the diaphragm portion 23 and the other end of the air valve plate is in sealing contact with the main body of the diaphragm portion 23, and the air valve plate may also be in a round shape, wherein the front end and the rear end of the air valve plate are integrally connected with the main body of the diaphragm portion 23 and the left end and the right end of the air valve plate are in sealing contact with the main body of the diaphragm portion 23, which is not limited in the invention.
To enhance the air tightness of the self-pressure relief type negative pressure pump structure 100, in an embodiment of the present invention, the outer periphery of the diaphragm portion 23 is hermetically connected to the cylinder liner 1. The sealing connection may include labyrinth connection, or may connect a sealing ring between the diaphragm portion 23 and the cylinder liner 1, or may use an oil seal, which is not limited in the present invention.
To enhance the air tightness of the self-venting negative pressure pump structure 100, in an embodiment of the invention, the lower end surface of the eccentric 4 is sealingly abutted and rotatably mounted on the bottom wall of the cylinder liner 1. The eccentric wheel 4 can be in sealing contact with the upper part of the sealing ring of the bottom wall of the cylinder sleeve 1, and lubricating oil can be also arranged between the eccentric wheel 4 and the bottom wall of the cylinder sleeve 1 for oil sealing, and the invention is not limited to the above.
The power unit 3 may include a cylinder, and may include an oil cylinder, which is not limited in this regard. In an embodiment of the invention, the power plant 3 comprises an electric motor, since electricity is more readily available in the domestic sector than other energy sources, the self-venting negative pressure pump has more usage scenarios in the domestic sector.
In order to reduce the deformation of the balls 5 and/or the eccentric 4, in an embodiment of the invention, the material of at least one of the eccentric 4 and the balls 5 comprises a metallic material. The metal material is adopted to make the eccentric wheel 4 and/or the balls 5 firm and wear-resistant, and prevent the balls 5 and the eccentric wheel 4 from deforming so as to influence the sealing abutting effect.
The invention also provides a breast pump, which comprises a self-pressure-relief negative pressure pump structure 100, wherein the specific structure of the self-pressure-relief negative pressure pump structure 100 refers to the above embodiments, and the breast pump at least has all the beneficial effects brought by the technical solutions of the above embodiments because the breast pump adopts all the technical solutions of the above embodiments, and the detailed description is omitted.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (8)

1.一种自泄压式负压泵结构，其特征在于，包括：1. A self-relieving negative pressure pump structure, characterized by comprising: 缸套，内部形成气腔，所述缸套在自身侧向设置有与所述气腔相连通的吸气口；A cylinder sleeve, an air cavity is formed inside the cylinder sleeve, and an air inlet connected to the air cavity is arranged on the side of the cylinder sleeve; 泵体，安装在所述缸套的上端，用以向上抽出所述气腔内的气体；A pump body, mounted on the upper end of the cylinder sleeve, for pumping the gas in the air cavity upwards; 动力装置，安装在所述缸套的下端；A power device, mounted at the lower end of the cylinder sleeve; 偏心轮，驱动连接所述动力装置，以在所述动力装置的带动下能够沿上下方向延伸的轴线偏心转动安装在所述气腔内，在所述偏心轮上形成有泄压气道，所述泄压气道一端连通所述气腔，另一端连通至外界，所述泄压气道具有沿所述偏心轮径向延伸的通道段，所述通道段向外贯设所述偏心轮以形成泄压孔；以及，An eccentric wheel is driven and connected to the power device, and is installed in the air cavity so as to be eccentrically rotated along an axis extending in the up-down direction under the drive of the power device. A pressure relief air passage is formed on the eccentric wheel, one end of which is connected to the air cavity, and the other end is connected to the outside. The pressure relief air passage has a channel section extending in the radial direction of the eccentric wheel, and the channel section penetrates the eccentric wheel outward to form a pressure relief hole; and 滚珠，滚动设置在所述通道段内；A ball rollingly arranged in the channel section; 其中，在所述偏心轮旋转时，所述滚珠受离心力作用而沿所述偏心轮径向向外活动，以密封抵接所述泄压孔，从而封闭所述泄压气道，气流自所述吸气口进入至所述气腔内；When the eccentric wheel rotates, the ball moves outward in the radial direction of the eccentric wheel under the action of centrifugal force to seal against the pressure relief hole, thereby closing the pressure relief airway, and the airflow enters the air cavity from the air inlet; 在所述偏心轮静止时，所述滚珠所受的离心力消失进而脱离抵接所述泄压孔，以开启所述泄压气道，气流自外界进入至所述气腔内；When the eccentric wheel is stationary, the centrifugal force on the ball disappears and the ball is separated from the pressure relief hole, so as to open the pressure relief airway, and the airflow enters the air cavity from the outside; 所述泵体采用隔膜泵；The pump body adopts a diaphragm pump; 所述隔膜泵包括：The diaphragm pump comprises: 偏心轴部；Eccentric shaft; 摆架部，所述摆架部上形成多个气碗，所有所述气碗均向下方凹陷；以及，A swing frame portion, wherein a plurality of gas bowls are formed on the swing frame portion, and all of the gas bowls are recessed downward; and 隔膜部，所述隔膜部表面形成和所述气碗对应的单向气孔，所述偏心轮、所述偏心轴部、所述摆架部向上依次驱动连接，所述隔膜部活动抵接并密封抵接在任一所述气碗上方，所述隔膜部上形成有与任一所述气碗对应的单向气孔；A diaphragm part, a one-way air hole corresponding to the gas bowl is formed on the surface of the diaphragm part, the eccentric wheel, the eccentric shaft part, and the swing frame part are sequentially driven and connected upward, the diaphragm part movably abuts and seals against any of the gas bowls, and a one-way air hole corresponding to any of the gas bowls is formed on the diaphragm part; 其中，所述气碗用以将所述气腔内的空气通过所述单向气孔压出。Wherein, the air bowl is used to press the air in the air cavity out through the one-way air hole. 2.如权利要求1所述的自泄压式负压泵结构，其特征在于，所述隔膜部的材质包括橡胶、硅胶、PVC中的至少一种。2. The self-relieving negative pressure pump structure as described in claim 1 is characterized in that the material of the diaphragm part includes at least one of rubber, silicone, and PVC. 3.如权利要求2所述的自泄压式负压泵结构，其特征在于，所述隔膜部上面形成有气阀片，所述气阀片的密封抵接所述隔膜部主体，所述气阀片沿上下方向贯穿所述隔膜部主体并且在自身形成有面积不等的上端表面和下端表面，所述气阀片的上端表面的面积大于所述气阀片的下端表面的面积，所述气阀片的周面密封抵接所述隔膜部主体；3. The self-relieving negative pressure pump structure according to claim 2, characterized in that an air valve sheet is formed on the diaphragm portion, the air valve sheet seals against the diaphragm portion body, the air valve sheet penetrates the diaphragm portion body in the up-down direction and forms an upper end surface and a lower end surface of unequal areas on itself, the area of the upper end surface of the air valve sheet is larger than the area of the lower end surface of the air valve sheet, and the circumferential surface of the air valve sheet seals against the diaphragm portion body; 其中，所述气阀片的上表面的面积大于所述气阀片的下表面的面积，用以使所述气阀片只能打开从而开启向上的排气通道。Wherein, the area of the upper surface of the air valve plate is larger than the area of the lower surface of the air valve plate, so that the air valve plate can only be opened to open the upward exhaust passage. 4.如权利要求1所述的自泄压式负压泵结构，其特征在于，所述隔膜部外周密封连接所述缸套。4. The self-relieving negative pressure pump structure as described in claim 1 is characterized in that the outer periphery of the diaphragm part is sealed and connected to the cylinder sleeve. 5.如权利要求1所述的自泄压式负压泵结构，其特征在于，所述偏心轮的下端表面密封抵接并且转动安装在所述缸套底壁。5. The self-relieving negative pressure pump structure according to claim 1 is characterized in that the lower end surface of the eccentric wheel is sealingly abutted and rotatably mounted on the bottom wall of the cylinder sleeve. 6.如权利要求1所述的自泄压式负压泵结构，其特征在于，所述动力装置包括电动机。6. The self-relieving negative pressure pump structure as described in claim 1 is characterized in that the power device includes an electric motor. 7.如权利要求1所述的自泄压式负压泵结构，所述偏心轮和所述滚珠中至少一个的材质包括金属材料。7. The self-relieving negative pressure pump structure as described in claim 1, wherein the material of at least one of the eccentric wheel and the ball comprises a metal material. 8.一种吸奶器，其特征在于，包括如权利要求1-7任一所述的自泄压式负压泵结构。8. A breast pump, characterized by comprising the self-relieving negative pressure pump structure according to any one of claims 1 to 7.
CN202310393717.6A 2023-04-07 2023-04-07 Self-relieving negative pressure pump structure and breast pump Active CN116378927B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310393717.6A CN116378927B (en) 2023-04-07 2023-04-07 Self-relieving negative pressure pump structure and breast pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310393717.6A CN116378927B (en) 2023-04-07 2023-04-07 Self-relieving negative pressure pump structure and breast pump

Publications (2)

Publication Number Publication Date
CN116378927A CN116378927A (en) 2023-07-04
CN116378927B true CN116378927B (en) 2025-07-01

Family

ID=86973055

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310393717.6A Active CN116378927B (en) 2023-04-07 2023-04-07 Self-relieving negative pressure pump structure and breast pump

Country Status (1)

Country Link
CN (1) CN116378927B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117138143A (en) * 2023-09-19 2023-12-01 宁波汇优母婴用品有限公司 Breast pump system
CN117547667A (en) * 2023-12-28 2024-02-13 深圳市桑泰达科技有限公司 A miniature negative pressure integrated pump and breast pump
CN119957709B (en) * 2025-02-19 2025-11-25 深圳市路特佳成供应链管理有限公司 A vent valve, an integrated valve-type vacuum pump, and a breast pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211370693U (en) * 2019-11-13 2020-08-28 广东布鲁斯智能科技有限公司 Double-end inflating pump
CN112011945A (en) * 2019-05-28 2020-12-01 青岛海尔滚筒洗衣机有限公司 Washing machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503842B1 (en) * 2006-06-30 2008-06-15 Tcg Unitech Systemtechnik Gmbh GEAR PUMP WITH CHANGING CONVEYING VOLUME
CN213116624U (en) * 2020-06-03 2021-05-04 厦门坤锦电子科技有限公司 Quick pressure relief valve assembly
CN115875264B (en) * 2022-12-21 2025-10-17 珠海格力电器股份有限公司 Pump body assembly, compressor and air conditioner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112011945A (en) * 2019-05-28 2020-12-01 青岛海尔滚筒洗衣机有限公司 Washing machine
CN211370693U (en) * 2019-11-13 2020-08-28 广东布鲁斯智能科技有限公司 Double-end inflating pump

Also Published As

Publication number Publication date
CN116378927A (en) 2023-07-04

Similar Documents

Publication Publication Date Title
CN116378927B (en) Self-relieving negative pressure pump structure and breast pump
CN101100989B (en) Diaphragm pump
CN106050726B (en) compressor
CN108869237B (en) Electric air pump for heat dissipation
CN106014941A (en) Miniature liquor pump
CN216742024U (en) Double-end electronic pump
CN201133340Y (en) Electric diaphragm pump
CN111852830A (en) Anti-drip water pump
CN114718911B (en) Sewage pump seal assembly and sewage pump
WO2020125064A1 (en) Scroll compressor, air conditioner, and backpressure adjustment method for scroll compressor
CN109899273A (en) A kind of diaphragm pump with leakage-proof effect
CN210290083U (en) A diaphragm water pump with anti-leakage effect
CN107191369B (en) The anti-rotary blade type compressor used for automobile air conditioning for shutting down reversion and leakage
CN117553039A (en) Self-pressure relief device of vacuum pump
CN110131139A (en) A kind of multicell constant-flow diaphragm pumps
CN212563598U (en) Drip-proof water pump
CN210531115U (en) Integrated pump valve and equipment thereof
CN215860795U (en) Gas ballast structure of dry type scroll vacuum pump
CN113982962A (en) Double-end electronic pump
CN210919401U (en) Diaphragm pump and coffee machine with same
CN206360872U (en) Membrane pump and water treatment facilities
CN222879855U (en) A low noise micro air pump
CN206206107U (en) A kind of miniature high flow capacity motor
CN207195275U (en) micro pump
CN223048965U (en) A charging and suction integrated pump head

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant