CN115614483A - Valve device and ventilation equipment - Google Patents

Abstract

The utility model provides a valve device and aeration equipment, wherein, valve device includes the valve body, and the valve body is equipped with the fine motion between valve block spare and top pushing member including top pushing member and installing in the valve block spare that pushes up the pushing member, and the fine motion is adjusted the structure and is included arc concave surface structure and circular protruding structure, and arc concave surface structure faces each other and contacts with circular protruding structure along predetermineeing the axis direction to make the valve block spare can use circular protruding structure to rotate as the relative pushing member of fulcrum. In the process that the pushing piece drives the valve sheet piece to approach or enter the valve port, the valve sheet piece can self-adaptively adjust the relative position between the valve sheet piece and the valve port structure under the interference of the valve port by utilizing the characteristic that the valve sheet piece can rotate by taking the circular bulge as a fulcrum, so that the valve sheet piece can be positioned at a position for completely blocking the valve port or a position for keeping the valve port at a preset opening degree; therefore, the matching precision of the valve piece and the valve port is effectively improved, and favorable conditions are created for realizing the precise control of the medium flow.

Description

Valve device and ventilation equipment

Technical Field

The invention relates to the field of medical instruments, in particular to a valve device and ventilation equipment.

Background

The valve is an important component of ventilators such as respirators and anesthesia machines, and is usually arranged in a medium pipeline of the ventilators to perform the functions of cutting off, throttling, regulating and the like on a medium in the pipeline. Taking a stop valve disposed in the ventilation device as an example, the stop valve generally includes a driving mechanism and a valve plate matched with the valve port, the valve plate is fixedly disposed at a power end of the driving mechanism, and the valve plate is driven by the driving mechanism to move, so that the valve plate can be controlled to block the valve port or adjust the opening of the valve port, thereby realizing regulation and control of the medium flow.

In the practical application process of the stop valve, when assembly errors occur between the valve plate and the valve port, or when the valve port and the diaphragm are worn due to long-term use, the matching precision of the valve plate and the valve port is easily reduced, so that the valve port cannot be completely blocked or the opening of the valve port cannot be effectively controlled, further the medium flow rate is deviated, and the performance of the stop valve and even the whole performance of the ventilation equipment is influenced.

Disclosure of Invention

The invention mainly solves the technical problem of providing a valve device and a ventilation device applying the valve device so as to achieve the purpose of improving the performance of the valve.

According to a first aspect, there is provided in an embodiment a valve arrangement comprising a valve body, the valve body comprising:

the valve piece is used for being matched with a valve port structure arranged on the valve seat; and

the valve piece is arranged on the pushing piece; the pushing piece is used for connecting a driving mechanism and can drive the valve piece to enter and exit the valve port structure along the direction of a preset axis under the driving of the driving mechanism;

a micro-motion adjusting structure is arranged between the valve piece and the pushing piece and comprises an arc concave surface structure and a circular convex structure, wherein one of the arc concave surface structure and the circular convex structure is arranged on the valve piece, and the other one of the arc concave surface structure and the circular convex structure is arranged on the pushing piece; the circular convex structure and the arc-shaped concave structure face and contact each other along the preset axis direction, so that the valve piece can rotate relative to the pushing piece by taking the circular convex structure as a fulcrum.

In one embodiment, the valve body further comprises a fixed part, the pushing part is provided with a first end and a second end which are opposite to each other along the direction of the preset axis, the first end of the pushing part is used for connecting a driving mechanism, and the circular protrusion structure is arranged at the second end of the pushing part;

the arc-shaped concave surface structure is arranged at the geometric center of the valve piece, and the outline edge of the valve piece is fixed with the fixing piece; the fixing piece is arranged on the pushing piece adjacent to the second end of the pushing piece, so that a preset gap is formed between the valve piece and the fixing piece.

In one embodiment, the valve member includes:

the valve body diaphragm is used for being in contact fit with the valve port structure and is provided with a main body part and an edge part, the main body part and the fixing part are opposite to each other at intervals along the direction of a preset axis, and the edge part and one surface of the fixing part, which is opposite to the main body part, are fixed; and

the supporting gasket is fixedly arranged on one surface of the main body part facing the fixing part, the arc-shaped concave surface structure is arranged at the geometric center of the supporting gasket, and the preset gap is located between the supporting gasket and the fixing part.

In one embodiment, a first annular groove distributed around the preset axial direction is formed between the main body part and the edge part, the supporting gasket is arranged to abut against one surface of the main body part facing the fixing part, and the contour edge of the supporting gasket is embedded in the first annular groove; and/or

The projected area of the fixing piece in the preset axis direction is smaller than the projected area of the main body part and/or the supporting gasket in the preset axis direction, the outer ring of the edge part is provided with a step structure distributed around the preset axis direction, and the step structure is located on one side of the edge part, back to the main body part.

In one embodiment, the valve body diaphragm is a one-piece structure made of a soft elastic material, and/or the supporting gasket is made of a hard rigid material.

In one embodiment, the fixing member includes a fixing disk and a close-fitting retainer ring, the contour edge of the valve sheet member is fixed with the fixing disk, the pushing member is provided with a fixing structure adjacent to the circular raised structure, the fixing structure is used for fixing the fixing disk and the close-fitting retainer ring to the pushing member in a manner of sleeving the pushing member, and the fixing structure is also used for keeping a preset gap between the fixing disk and the valve sheet member.

In one embodiment, the fixing structure includes:

the blocking structure surface is arranged on the pushing piece around the preset axial line direction; and

the second annular groove is recessed on the surface of the pushing piece around the preset axis direction, and the blocking structure surface and the second annular groove are arranged at intervals along the preset axis direction;

the tight fit retainer ring is sleeved on the pushing piece in a mode that at least part of the tight fit retainer ring is embedded in the second annular groove, so that the tight fit retainer ring can abut against and press the fixed disk on the blocking structure surface along the direction of the preset axis.

In one embodiment, a blocking groove is formed in one surface, facing the valve plate piece, of the fixed disc along the preset axial direction, a part of the tight fit retaining ring is embedded in the second annular groove, and the other part of the tight fit retaining ring is filled in the blocking groove.

In one embodiment, the size of the preset gap in the direction of the preset axis is 1mm-15mm.

In one embodiment, the device further comprises an elastic piece, the elastic piece is sleeved on the pushing piece, one end of the elastic piece is abutted to the fixing piece, and the other end of the elastic piece is used for being abutted to the driving mechanism.

In one embodiment, one surface of the valve piece, which faces away from the pushing piece along the preset axial direction, is provided with a first area and a second area, the second area is arranged around the first area, the first area is in a conical surface structure, and the conical bottom end of the first area is connected with the second area.

In one embodiment, the radius of curvature of the arc-shaped concave structure is larger than that of the circular convex structure.

In one embodiment, the valve further comprises a valve seat, the valve seat is provided with a valve port structure for allowing the fluid medium to pass through, and the valve piece is matched with the valve port structure; and/or

The voice coil motor structure further comprises a driving mechanism, wherein the driving mechanism comprises an electromagnetic coil, and the electromagnetic coil and the pushing piece are arranged in a matched mode to form a voice coil motor structure or an electromagnet structure in a combined mode.

According to a second aspect, there is provided in an embodiment a ventilator comprising:

a medium line for transmitting a fluid medium; and

at least one valve device which is arranged in the medium pipeline and is used for switching on and off the medium pipeline and/or adjusting the opening degree of the medium pipeline; at least one of the at least one valve device employs the valve device of the first aspect.

According to the valve device of above-mentioned embodiment, including the valve body, the valve body is equipped with the fine motion between valve block spare and top pushing member including top pushing member and installing in the valve block spare of top pushing member, fine motion regulation structure includes arc concave surface structure and circular protruding structure, and arc concave surface structure and circular protruding structure face each other and contact along predetermineeing the axis direction to make the valve block spare can use circular protruding structure to rotate as the relative top pushing member of fulcrum. In the process that the pushing piece drives the valve plate piece to approach or enter the valve port, the valve plate piece can be interfered by the valve port to self-adaptively adjust the relative position between the valve plate piece and the valve port structure by utilizing the characteristic that the valve plate piece can rotate by taking the circular bulge as a pivot, so that the valve plate piece can be positioned at a position for completely blocking the valve port or a position for keeping the valve port to have a preset opening degree; therefore, the matching precision of the valve piece and the valve port is effectively improved, and favorable conditions are created for realizing the precise control of the medium flow.

Drawings

Fig. 1 is a schematic view of a structural assembly of a valve device according to an embodiment.

Fig. 2 is a schematic sectional view of a valve device according to an embodiment in a predetermined axial direction.

Fig. 3 is a schematic sectional view of the valve seat and the driving mechanism of fig. 2 without the valve seat.

Fig. 4 is an exploded view of a valve body portion of a valve device according to an embodiment.

Fig. 5 is an exploded view of a valve device according to an embodiment.

Fig. 6 is a schematic cross-sectional view of a valve body diaphragm in the valve device according to an embodiment.

Fig. 7 is a schematic sectional view of a valve device according to an embodiment, in which an elastic member is omitted.

Fig. 8 is an exploded view of a valve device according to an embodiment, in which an elastic member is omitted.

In the figure:

10. a valve plate member; 10a, an arc concave surface structure; 10b, a first region; 10c, a second region; 11. a valve body diaphragm; 11a, a main body portion; 11b, an edge portion; 11c, a first ring groove; 11d, a step structure; 12. a support pad; 20. pushing the piece; 20a, a circular convex structure; 20b, a barrier structure surface; 20c, a second ring groove; 30. a fixing member; 31. fixing the disc; 31a, a blocking groove; 32. a tight fitting retainer ring; 40. a valve seat; 40a, a media channel; 40b, a valve port structure; 41. a base body; 42. a valve cover; 50. a drive mechanism; 51. an electromagnetic coil; 60. an elastic member; l, presetting a gap.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous specific details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the description of the methods may be transposed or transposed in order, as will be apparent to a person skilled in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

According to the valve device, a micro-motion adjusting structure formed by combining or matching an arc-shaped concave surface structure and a circular convex structure is arranged between a valve plate piece and a pushing piece, and in the process that the pushing piece drives the valve plate piece to enter and exit a valve port, the valve plate piece can rotate relative to the pushing piece by taking the circular convex structure as a supporting point under the structural interference action of the valve port or the impact action of a fluid medium, so that the adjustment of the relative position between the valve plate piece and the valve port is realized, and the valve plate piece can be positioned at the position for completely blocking the valve port or keeping the valve port at the position with a preset opening degree; therefore, the matching precision of the valve piece and the valve port can be effectively improved, and favorable conditions are created for realizing the precise control of the medium flow.

Referring to fig. 1 to 8, an embodiment of the present invention provides a ventilator, such as a respirator, an anesthesia machine, a respiratory therapy apparatus, etc., which includes a medium pipeline, a valve device installed on the medium pipeline, and other functional components (such as a turbocharger, a body shell, etc.) if necessary; the medium line is understood to be a corresponding line in the ventilation device for delivering a fluid medium (for example breathing gas); the valve devices are stop valves for controlling the on/off of the medium lines, proportional valves for regulating the medium flow, etc., and the number and the functional types of the valve devices can be selected and configured according to actual requirements.

The structure, operation principle, and functional effects of the valve device will be described below mainly by taking the valve device as a shut-off valve applied to a ventilation apparatus as an example. It should be noted that the valve device may also be a valve of other functional types in the aeration device, such as a proportional valve, a flow regulating valve, etc.; in addition, other functional components of the ventilation device can refer to the prior art, and are not described herein.

Referring to fig. 1 to 8, the valve device includes a valve body including a valve plate member 10, a pushing member 20, and a fixing member 30; wherein the valve member 10 is disposed in a valve seat 40, the valve seat 40 can be disposed in a medium pipeline (such as an outlet pipeline of a breather device), the valve seat 40 has a medium channel 40a in butt communication with the medium pipeline, and a valve port structure 40b for cooperating with the valve member 10 is formed in the medium channel 40 a.

The pushing member 20 is a substantially rod-shaped structure having two opposite ends along a predetermined axial direction, and for convenience of distinction and description, one end of the pushing member 20 is defined as a first end, and the other end is defined as a second end; wherein, the first end of the pushing member 20 is coupled with the power end of the driving mechanism 50, and the body part of the driving mechanism 50 is fixedly arranged on the valve seat 40 or the medium pipeline; the second end of the pushing element 20 extends into the valve seat 40 and is structurally connected with the valve plate 10 through the fixing element 30 to ensure that the valve plate 10 cannot be separated from the pushing element 20; meanwhile, a micro-motion adjusting structure is arranged between the second ends of the valve plate member 10 and the pushing member 20, so as to establish a movable connection relationship between the valve plate member 10 and the pushing member 20.

The pushing element 20 is driven to drive the valve member 10 to reciprocate linearly along the preset axial direction by the driving force provided by the driving mechanism 50, so that the valve member 10 can move in and out of the valve port structure 40b; the existence of the fine adjustment structure can make the valve plate member 10 have the conditions of rotating movement and certain amplitude of swinging movement relative to the pushing member 20. When the valve sheet 10 is subjected to structural interference of the valve port structure 40b or impact of a fluid medium, the spatial position of the valve sheet 10 relative to the pushing member 20 or the valve port structure 40b can be adaptively adjusted and changed, so that by utilizing the matching (specifically, change of relative positional relationship between the two) of the valve sheet 10 and the valve port structure 40b, the conduction, the cutoff and the regulation of the opening degree of the medium channel 40a or the medium pipeline are realized.

It should be noted that the preset axial direction may be understood as a direction in which a central axis of the pushing member 20 and/or a geometric central axis of the valve port structure 40 are located, and may also be a spatial arrangement direction of the valve sheet member 10 and the valve port structure 40b; for example, the preset axial direction is indicated by a bold dashed line in each of fig. 2, 5, and 8; in fig. 1 and 2, the flow direction of the fluid medium is indicated by a bold solid line with an arrow.

In one embodiment, referring to fig. 2 to 8, the fine adjustment structure includes an arc concave structure 10a and a circular convex structure 20a; the arc-shaped concave structures 10a are recessed in the geometric central area of one surface of the valve plate member 10 facing the pushing member 20, and the circular convex structures 20a are protruded from the second end surface of the pushing member 20, so that the arc-shaped concave structures 10a and the circular convex structures 20a face each other along the preset axial direction; meanwhile, the radius of curvature of the arc-shaped concave structure 10a is set to be larger than that of the circular convex structure 20 a. The fixing member 30 is disposed on the pushing member 20 adjacent to the second end of the pushing member 20, and the contour edge of the valve plate 10 is fixedly connected to the fixing member 30.

Based on the difference in the radius of curvature of the curved concave structures 10a and the circular convex structures 20a; firstly, at least part of the circular convex structure 20a can be embedded or accommodated in the arc-shaped concave structure 10a, so as to ensure that the vertex of the circular convex structure 20a is kept in contact with the central point of the arc-shaped concave structure 10a. Secondly, a certain structural gap (for convenience of description, the structural gap is defined as a preset gap L) is formed between the valve plate 10 and the fixing member 30, so as to ensure that the valve plate 10 can smoothly rotate relative to the pushing member 20 with the circular protrusion structure 20a as a fulcrum; for example, the rotation motion of any angle is carried out around the direction of the preset axis; as another example, the pushing member 20 is turned at a certain angle based on the fulcrum. Thirdly, the contact area between the arc-shaped groove structure 10a and the circular convex structure 20a can be effectively reduced, and excessive abrasion between the two structures can be avoided.

When the device is specifically implemented, the size of the preset gap L in the preset axis direction can be set to be 1mm-15mm, for example, 6mm according to actual requirements.

Taking the movement process of the valve element 10 for blocking the valve port structure 40b as an example, when the driving mechanism 50 pushes the valve element 10 to approach the valve port structure 40b along the preset axis direction through the pushing element 20, even if the geometric center line of the valve port structure 40b is not perpendicular to the initial plane of the valve element 10 (it can be understood that the initial plane of the valve element 10 is not perpendicular to the preset axis direction), in the process that the valve element 10 gradually enters the valve port structure 40b, the valve element 10 will undergo structural interference by the valve port structure 40b, and will rotate correspondingly with the circular protrusion structure 20a as a pivot, so as to adjust the valve element 10 to the plane perpendicular to the geometric center line or the preset axis direction of the valve port structure 40b, and finally make the valve element 10 located at the position for completely blocking the valve port structure 40b.

Therefore, based on the configuration of the fine adjustment structure, when the valve piece 10 is engaged with the valve port structure 40b, the spatial position of the valve piece 10 or the relative position relation between the valve piece 10 and the valve port structure 40b can be adaptively adjusted, so that the engagement precision of the valve piece 10 and the valve port structure 40b can be ensured, the effective and accurate control of the opening degree of the valve port structure 40b can be realized, and the problems of abrasion and the like caused by the existence of assembly errors after the valve piece 10 is used for a long time can be avoided.

In another embodiment, the positions of the arc concave structures 10a and the circular convex structures 20a can be exchanged, that is: the arc-shaped concave surface structure 10a is arranged on the pushing piece 20, and the circular convex structure 20a is arranged on the valve piece 10 to form micro-motion adjusting structures or valve devices with different structural forms, so that different requirements are met.

In other embodiments, the fixing element 30 may be omitted, for example, the arc-shaped concave structure 10a is configured as a spherical groove structure, the circular convex structure 20a is configured as a spherical head structure, the spherical head is covered by the spherical groove, and a spherical rotating connection relationship is established between the valve plate 10 and the pushing element 20, although the controllability of the valve plate 10 may be reduced due to a larger movement range of the valve plate 10 relative to the pushing element 20, the fixing element can meet special application requirements.

In one embodiment, referring to fig. 2, 3 and 5 to 7, the valve piece 10 is a combined structure including a valve membrane 11 and a support pad 12; the valve body diaphragm 11 is used as a component for the valve piece 10 to contact and match with the inner wall of the valve port structure 11, and can be an integrated structure made of soft materials with certain elasticity such as silica gel; the support pad 12 is used as a carrier for the arc concave structure 10a or a component in rotational contact with the pushing member 20, and may be made of hard rigid material with low friction coefficient and high wear resistance, such as aluminum, copper, etc.

Specifically, the valve body diaphragm 11 has a main body portion 11a and an edge portion 11b provided around the main body portion 11 a; the fixing member 30 is fixedly disposed at a position of the pushing member 20 adjacent to the second end thereof, the main body portion 11a and the fixing member 30 are disposed opposite to each other at a distance along a predetermined axial direction, the supporting pad 12 is fixed to a surface of the main body portion 11a facing the fixing member 30 in an overlapping manner, and the arc-shaped concave structure 10a is disposed at a geometric center position of a surface of the supporting pad 12 facing the fixing member 30. The edge part 11b extends from the edge of the main body part 11a facing the fixing member 30 towards the fixing member 30 to finally extend to the surface of the fixing member 30 facing away from the main body part 11a or the support gasket 12, so that the edge part 11b covers the edge part of the fixing member 30 in a tight fit and sleeve manner by virtue of the material property (i.e. elasticity) of the valve body diaphragm 11 itself, and the connection and fixation of the valve body diaphragm 11 and the fixing member 30 are realized; meanwhile, the circular convex structure 20a and the arc concave structure 10a may be in a relatively abutting relationship, and the material characteristics of the valve body diaphragm 11 may also stabilize the support gasket 12 inside the valve body diaphragm 11. In specific implementation, the body 11a has a contour shape that is adapted to the sectional shape of the valve port structure 40b (e.g., a disk shape), and the support gasket 12 has a contour shape that is substantially the same as the body 11 a.

Firstly, the material characteristics of the valve body diaphragm 11 are utilized, so that the valve body diaphragm can adapt to or match the structural form of the valve port structure 40b, and the valve port structure 40 can be effectively blocked and cut off; but also can avoid the valve piece 10 and the valve port structure 40b from being damaged due to hard friction or contact; the valve body diaphragm 11, the support pad 12, and the fixing member 30 may be connected and fixed by fitting (of course, the main body portion 11a and the support pad 12, and the edge portion 11b and the fixing member 30 may be further fixed by adhesion, as necessary).

Secondly, the valve body diaphragm 11 can be structurally supported by the support gasket 11, so that the valve body gasket 11 (especially the main body part 11 a) can maintain the basic structural form, and the valve port structure 40b cannot be completely blocked by the valve piece 10 due to structural deformation of the main body part 11a in the process of entering and exiting the valve port structure 40b of the valve piece 10 is avoided; meanwhile, the support gasket 12 is used as a setting carrier of the arc concave structure 10a, and a guarantee is provided for the whole valve piece 10 to smoothly rotate by taking the circular convex structure 20a as a fulcrum.

In another embodiment, the valve plate 10 may also be made of an integral structure, for example, made of silicone, and the edge portion 11a and the corresponding functional portion having a stable structural shape and configured with the arc-shaped concave structure 10a are formed by selecting and configuring the material thickness of the corresponding structural portion of the valve plate 10.

In other embodiments, the support pad 12 may have other structures, or the support pad 12 may be omitted; for example, in the case that the main body portion 11a has a relatively stable structural configuration, the arc-shaped concave structure 10a may be directly formed on the main body portion 11a or the valve body diaphragm 11 by providing an arc-shaped groove at a geometric center position of the main body portion 11a, and arranging the support gasket 12 to fit the groove surface of the arc-shaped groove.

In an embodiment, referring to fig. 6 in combination with fig. 2, 3 and 7, a first annular groove 11c is formed at a connecting portion of the main body portion 11a and the edge portion 11b, the first annular groove being distributed around the predetermined axial direction or the geometric center of the valve piece 10, the supporting pad 12 is disposed against a surface of the main body portion 11a facing the fixing member 30, and a contour edge of the supporting pad 12 is embedded in the first annular groove 11 c; therefore, the first annular groove 11c is used for accommodating the contour edge of the support gasket 12, and the support gasket 12 can be conveniently, quickly and stably fixed in the valve body diaphragm 11 in a manner similar to wrapping by only depending on the elasticity of the valve body diaphragm 11, so that the valve piece 10 can be quickly assembled.

In an embodiment, referring to fig. 6 in combination with fig. 2, 3 and 7, a projection area of the fixing member 30 in the predetermined axial direction is set to be smaller than a projection area of the main body portion 11a and/or the support pad 12 in the predetermined axial direction, so that one end of the edge portion 11b away from the main body portion 11a needs to extend a certain length in the geometric center direction of the fixing member 30 to cover an edge of a side of the fixing member 30 opposite to the main body portion 11 a; meanwhile, by the structural features of the rim portion 11b, the step structures 11d distributed around the predetermined axial direction may be provided on the outer ring of the rim portion 11b, and it can also be understood that the step structures 11d are located on the contour edge of the surface of the rim portion 11b facing away from the main body portion 11a (or the fixing member 30 and the support pad 12).

The material consumption of the valve body diaphragm 11 can be effectively reduced by the arranged step structure 11d, and the overall weight of the valve piece 10 is reduced, so that the self-rotation motion caused by the self weight of the valve piece 10 is reduced, and the valve piece 10 is ensured to rotate relative to the pushing piece 20 by taking the circular protrusion structure 20a as a fulcrum only when being subjected to an external force (for example, the structure interference effect of the valve port structure 40 b).

In one embodiment, referring to fig. 2 to 5 and fig. 7 and 8, the fixing member 30 includes a fixing plate 31 and a close-fit retainer ring 32; wherein, the fixed disc 31 and the supporting pad 12 have substantially the same contour shape (for example, disc shape); the fixed disc 31 is sleeved on the pushing member 20 at a position adjacent to the circular convex structure 20a in a manner of being opposite to the valve plate member 10 (specifically, the supporting gasket 12) at intervals along the preset axial direction; and the contour edge (specifically, edge portion 11 b) of the valve piece 10 is fixed to the edge of the face of the fixed disk 31 facing away from the support gasket 12. The tight fitting retainer ring 32 can be a C-shaped open retainer ring structure, which is sleeved on the pushing member 20 and located between the circular protrusion structure 20a and the fixed disk 31, and is mainly used for applying an extrusion acting force to the fixed disk 31 towards a side away from the support gasket 12 or the valve sheet member 10 along a preset axis direction; on one hand, the fixed disk 31 is fixed on the pushing member 20 in a positioning manner, so that the integral structure formed by the valve piece 10 and the fixed member 31 is more stable, and noise is not generated while the actual movement displacement of the pushing member 20 in the preset axis direction is converted into the movement displacement of the valve piece 10; on the other hand, a preset gap L is ensured to be maintained between the fixed disc 31 and the valve plate member 10 (such as the support gasket 12), which provides for the rotation of the valve plate member 10 relative to the pushing member 20.

For the sake of distinction and description, the structural portion of the pushing member 20 where the tight fitting retainer 32 and the fixed disk 31 are disposed is defined as a fixing structure, and it is understood that the fixing structure is a functional structural portion disposed at a position of the pushing member 20 adjacent to the circular protrusion structure 20a, and mainly functions to fix the fixed disk 31 and the tight fitting retainer 32 to the pushing member 20 in a manner of sleeving the pushing member 20.

In one embodiment, referring to fig. 4 in combination with fig. 2, 3, 5 and 7, the fixing structure includes a blocking structure surface 20b and a second annular groove 20c; the second ring groove 20c is recessed around the preset axial direction on the surface of the pushing part 20 adjacent to the circular convex structure 20a, and the tight-fit retainer ring 32 is sleeved on the pushing part 20 in a manner of being at least partially embedded in the second ring groove 20c; the blocking structure surface 20b may be a torus structure protruding from the surface of the pushing member 20 around the predetermined axial direction, and the torus structure is disposed on a side of the second ring groove 20c far from the supporting pad 12 or the circular protrusion structure 20a along the predetermined axial direction; the blocking structure surface 20b may also be a groove sidewall of the second annular groove 20 on a side far away from the circular convex structure 20a in the preset axis direction; after the fixed disk 31 is sleeved on the pushing member 20 from one end of the circular convex structure 20a, the fixed disk 31 can be abutted by the blocking structure surface 20b to prevent the fixed disk 31 from moving away from the circular convex structure 20a or the supporting gasket 12; the tight-fitting retainer ring 32 inserted or clamped in the second annular groove 20c can press the fixed disk 31 toward the blocking structure surface 20b, so as to position and fix the fixed disk 31.

In other embodiments, the fixing structure and the tight-fit retainer 32 may also adopt other suitable structures, for example, the fixing structure includes a blocking structure surface 20b and an external thread structure disposed on the pushing member 20, and the tight-fit retainer 32 is disposed on the pushing member 20 in a threaded manner and presses the fixing disc 31 against the blocking structure surface 20b.

In one embodiment, referring to fig. 4 in combination with fig. 2, 3, 5 and 7, blocking grooves 31a are formed on a surface of the fixed disk 31 on a side facing the tight fit retainer 31, the blocking grooves 31a are distributed around a predetermined axial direction, after a part of the tight fit retainer 32 is embedded in the second groove 20c, another part of the tight fit retainer 32 is correspondingly embedded or filled in the blocking grooves 31a, so that surfaces of the tight fit retainer 32 and the fixed disk 31 on a side facing the support gasket 12 are kept flush while the fixed disk 31 is pressed against the blocking structure surface 20b by the tight fit retainer 32; this improves the overall compactness of the fixture 30.

In one embodiment, referring to fig. 2 to 8, a side of the valve plate 10 (specifically, the main body 11a of the valve body diaphragm 11) facing away from the pushing member 20 in the predetermined axial direction is substantially a conical structure, so as to guide the fluid medium flowing through the valve seat 40 or the valve port structure 40b, and enable the fluid medium to pass through the valve port structure 40b through a structural gap between an inner wall of the valve port structure 40b and the valve plate 10. Specifically, the side of the valve plate member 10 facing away from the pushing member 20 has first regions 10b and 10c; the first region 10b is a conical surface structure, and the second region 10c is arranged around the first region 10 b; and, the tapered end of the first region 10b meets the second region 10c to form a complete area. In this way, the surface structure of the first region 10b can guide the fluid medium to flow between the second region 10c and the inner wall of the valve port structure 40b.

In an embodiment, referring to fig. 2, fig. 3 and fig. 5, the valve device further includes an elastic member 60, and the elastic member 60 may be a spring, an elastic column, an elastic flap, or the like, and is mainly used for providing an elastic restoring force for restoring the valve plate member 10 to a plane perpendicular to the predetermined axial direction, so as to ensure the structural stability of the valve plate member 10. Taking the elastic member 60 as an example of a spring, it is sleeved on the pushing member 20; one end of the elastic element 60 abuts against the fixing element 30 (for example, the fixing disc 31), and the other end abuts against the body of the driving mechanism 50, so that an elastic force is applied to the valve sheet element 10 through the fixing element 30 along the predetermined axial direction by the elastic element 60 to overcome structural interference of the valve port structure 40b or impact of the fluid medium, so as to adjust the valve sheet element 10 from a plane not perpendicular to the predetermined axial direction to another plane perpendicular to the predetermined axial direction. Namely: corresponding to the function of providing the valve plate 10 with automatic resetting.

In other embodiments, the resilient member 60 may be omitted as desired, such as the valve arrangement shown in fig. 7 and 8.

In one embodiment, referring to fig. 1, fig. 2 and fig. 5, the valve seat 40 includes a seat body 41 and a valve cover 42, the seat body 41 has an inlet section and an outlet section respectively communicating with the medium pipeline; the inlet section is mainly used for allowing fluid media to enter the valve seat 40, the valve port structure 40b is arranged at the inlet section of the seat body 41, and the outlet section is mainly used for allowing the fluid media in the valve seat 40 to flow out of the valve seat 40; the valve cover 42 covers the seat body 41 facing the valve port structure 40b to form a valve seat space communicating the inlet section and the outlet section with the seat body 41; it is also understood that the media passage 40a is formed by a combination of an inlet section, a valve seat space and an outlet section. Suitably, the body of the drive mechanism 50 may be secured to the valve cover 42, with the pusher 20 extending through the valve cover 42 and into the valve seat space; the valve plate member 10 (together with the fixing member 30, the elastic member 60, etc.) is located in the valve seat space and can approach or move away from the valve port structure 40b along a predetermined axial direction. Therefore, the whole valve device can be disassembled and assembled conveniently and quickly.

In one embodiment, referring to fig. 2, the driving mechanism 50 may have different structures according to the type of function of the valve device; for example, when the valve device is a stop valve that only performs on-off control of the medium line or the valve port structure 40b, the driving mechanism 50 may be an electromagnet structure; for another example, when the valve device is a low-pressure proportional valve for adjusting the opening of the valve port structure 40b, the driving mechanism 50 may adopt a voice coil motor structure. The basic structural configuration and principles of the electromagnet drive or voice coil motor drive are known to those skilled in the art, and thus the specific structure and principles of the driving mechanism 50 will not be described in great detail herein; it should be noted that the driving mechanism 50 may include a solenoid 51 and other structural components (such as an outer housing, etc.) as required, the solenoid 51 is disposed in cooperation with the pushing member 20, and the pushing member 20 is driven to move the valve plate 10 along the predetermined axial direction by selecting the type of energizing the solenoid 51.

It should be noted that the description of the valve seat 40 and the driving mechanism 50 is introduced in the embodiment of the present application only for understanding the structural configuration and the operation principle of the valve device, and does not mean that the valve seat 40 and the driving mechanism 50 are necessarily components of the valve device.

In particular, in some embodiments, the valve seat 40 and/or the actuating mechanism 50 may be part of a valve device that is installed as an integral functional component on the media line when the valve device is used in an air venting apparatus. In other embodiments, the valve seat 40 and/or the actuating structure 50 are not part of the valve assembly, but are functional elements that cooperate with the valve body; for example, the valve seat 40 may be a part of a medium pipeline, and the valve device may be applied by installing a combination body formed by the valve plate member 10 and the pushing member 20 and the driving mechanism 50 on the valve seat 40; for another example, the valve seat 40 and the driving mechanism 50 may be functional components configured in an existing valve or a ventilation apparatus, and the valve body is structurally combined with the valve seat 40 and the driving mechanism 50 to implement application of a valve device or structural modification of an existing valve.

The present invention has been described in terms of specific examples, which are provided to aid in understanding the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims (14)

1. A valve device, comprising a valve body, the valve body comprising:

the valve piece is used for being matched with a valve port structure arranged on the valve seat; and

the valve piece is arranged on the pushing piece; the pushing piece is used for being connected with a driving mechanism and can drive the valve piece to enter and exit the valve port structure along the direction of a preset axis under the driving of the driving mechanism;

a micro-motion adjusting structure is arranged between the valve piece and the pushing piece and comprises an arc concave surface structure and a circular convex structure, wherein one of the arc concave surface structure and the circular convex structure is arranged on the valve piece, and the other one of the arc concave surface structure and the circular convex structure is arranged on the pushing piece; the circular convex structure and the arc-shaped concave structure face and contact each other along the preset axis direction, so that the valve piece can rotate relative to the pushing piece by taking the circular convex structure as a fulcrum.

2. The valve assembly of claim 1, wherein the valve body further comprises a fixed member, the pushing member having a first end and a second end opposite to each other along the predetermined axis, the first end of the pushing member being adapted to be coupled to a driving mechanism, the circular protrusion being disposed at the second end of the pushing member;

the arc-shaped concave surface structure is arranged at the geometric center of the valve piece, and the outline edge of the valve piece is fixed with the fixing piece; the fixing piece is arranged on the pushing piece adjacent to the second end of the pushing piece, so that a preset gap is formed between the valve piece and the fixing piece.

3. The valve device of claim 2, wherein said valve plate member comprises:

the valve body diaphragm is used for being in contact fit with the valve port structure and is provided with a main body part and an edge part, the main body part and the fixing part are opposite to each other at intervals along the direction of a preset axis, and the edge part and one surface of the fixing part, which is opposite to the main body part, are fixed; and

the supporting gasket is fixedly arranged on one surface of the main body part facing the fixing part, the arc-shaped concave surface structure is arranged at the geometric center of the supporting gasket, and the preset gap is located between the supporting gasket and the fixing part.

4. The valve device according to claim 3, wherein a first annular groove is formed between the main body portion and the edge portion, the first annular groove is distributed around the predetermined axis, the support gasket is disposed against a surface of the main body portion facing the fixing member, and the contour edge of the support gasket is embedded in the first annular groove; and/or

The projected area of the fixing piece in the preset axis direction is smaller than the projected area of the main body part and/or the supporting gasket in the preset axis direction, the outer ring of the edge part is provided with a step structure distributed around the preset axis direction, and the step structure is located on one side of the edge part, back to the main body part.

5. The valve assembly of claim 3 wherein said valve body diaphragm is a one-piece structure formed of a soft elastomeric material and/or said support spacer is formed of a hard rigid material.

6. The valve assembly of claim 2, wherein the fixing member comprises a fixed plate and a close-fitting retainer ring, the contour edge of the valve plate member is fixed to the fixed plate, the pushing member is provided with a fixing structure at a position adjacent to the circular protrusion structure, the fixing structure is used for fixing the fixed plate and the close-fitting retainer ring to the pushing member in a manner of sleeving the pushing member, and the fixing structure is further used for keeping a preset gap between the fixed plate and the valve plate member.

7. The valve arrangement of claim 6, wherein the securing structure comprises:

the blocking structure surface is arranged on the pushing piece around the preset axial line direction; and

the second annular groove is recessed on the surface of the pushing piece around the preset axis direction, and the blocking structure surface and the second annular groove are arranged at intervals along the preset axis direction;

the tight fit retainer ring is sleeved on the pushing piece in a mode that at least part of the tight fit retainer ring is embedded in the second annular groove, so that the tight fit retainer ring can abut against and press the fixed disk on the blocking structure surface along the direction of the preset axis.

8. The valve assembly of claim 7, wherein the retaining disk has a retaining groove on a surface thereof facing the valve plate member in the predetermined axial direction, a portion of the close-fitting retainer is fitted in the second annular groove, and another portion of the close-fitting retainer is filled in the retaining groove.

9. The valve arrangement of claim 2, wherein the predetermined clearance is between 1mm and 15mm in the direction of the predetermined axis.

10. The valve assembly of claim 2, further comprising a resilient member disposed about the push member, the resilient member having one end abutting the mounting member and another end for abutting the drive mechanism.

11. The valve device according to claim 1, wherein a face of the valve plate member facing away from the pushing member in the direction of the predetermined axis has a first region and a second region, the second region is disposed around the first region, the first region has a tapered surface structure, and a tapered bottom end of the first region is connected to the second region.

12. The valve arrangement of claim 1, wherein the arcuate concave structure has a radius of curvature greater than a radius of curvature of the circular convex structure.

13. The valve device of claim 1, further comprising a valve seat provided with a valve port structure for passage of a fluid medium, the valve flap member engaging the valve port structure; and/or

The voice coil motor structure further comprises a driving mechanism, wherein the driving mechanism comprises an electromagnetic coil, and the electromagnetic coil and the pushing piece are arranged in a matched mode to form a voice coil motor structure or an electromagnet structure in a combined mode.

14. An aeration device, comprising:

a medium line for transmitting a fluid medium; and

the valve device is arranged in the medium pipeline and is used for switching on and off the medium pipeline and/or adjusting the opening degree of the medium pipeline; at least one of the at least one valve device employs a valve device as claimed in any one of claims 1-13.

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