Valve body device and combination valve assembly

Abstract

The invention discloses a valve body device and a combination valve assembly, and relates to the technical field of valve bodys.The valve body device comprises a valve body main body defining a medium channel, a first wall part provided with a first medium passing area, a second wall part provided with a second medium passing area, a first through hole formed in the first medium passing area and a second through hole formed in the second medium passing area; a second through hole is formed in the second medium passing region; the positioning part is fixedly arranged between the first wall part and the second wall part, the elastic piece is arranged between the first wall part and the second wall part and arranged on the positioning part in a sleeving mode, and the elastic piece is opposite to the first medium passing area and the second medium passing area. Pressure difference is formed between the side, deviating from the second medium passing area, of the first medium passing area and the side, deviating from the first medium passing area, of the second medium passing area, so that the valve body device can achieve the functions of two-way connection and two-way cut-off, and the valve body device is simple in structure, high in reliability, small in size and convenient to use. And the number of parts, the manufacturing difficulty and the manufacturing cost of the valve body device can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of valve bodies, and in particular to a valve body device and a combined valve assembly. Background Art

[0002] In the related technology, the valve body is a control component in the pipeline fluid delivery system, which is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, non-return, diversion or overflow pressure relief. The existing valve body has a relatively complex mechanical structure, many parts, and often requires electromagnetic control and operation mechanisms, which makes the valve body difficult to manufacture, low reliability and high cost. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a valve body device that can realize the functions of two-way conduction and two-way cutoff, and the valve body device has a simple structure and high reliability, which is conducive to reducing the number of parts of the valve body device, the difficulty of manufacturing, and the manufacturing cost.

[0004] The present invention further provides a combined valve assembly having the valve body device.

[0005] According to an embodiment of the present invention, a valve body device includes: a valve body main body, the valve body main body defines a medium channel, a first wall portion and a second wall portion, the first wall portion and the second wall portion are both arranged in the medium channel, along the extension direction of the medium channel, the first wall portion and the second wall portion are opposite and spaced apart, the first wall portion has a first medium passing area, the first medium passing area is formed with a first through hole, the second wall portion has a second medium passing area corresponding to the first medium passing area, the second medium passing area is formed with a second through hole; an elastic sheet and a positioning portion, the positioning portion is fixedly arranged between the first wall portion and the second wall portion, the elastic sheet is arranged between the first wall portion and the second wall portion and is sleeved on the positioning portion, along the arrangement direction of the first wall portion and the second wall portion, the elastic sheet is arranged opposite to the first medium passing area and the second medium passing area.

[0006] According to the valve body device of the embodiment of the present invention, by arranging the elastic sheet between the first wall portion and the second wall portion and sleeved on the positioning portion, along the arrangement direction of the first wall portion and the second wall portion, the elastic sheet and the first medium passing area and the second medium passing area are arranged opposite to each other, the first medium passing area is formed with a first through hole, and the second medium passing area is formed with a second through hole, and a pressure difference is formed through the side of the first medium passing area away from the second medium passing area and the side of the second medium passing area away from the first medium passing area, so that the valve body device can realize the functions of two-way conduction and two-way cutoff, and the valve body device has a simple structure, high reliability and small size, which is conducive to reducing the number of parts of the valve body device, the difficulty of manufacturing and the manufacturing cost.

[0007] According to some embodiments of the present invention, the spacing distance between the first wall portion and the second wall portion is greater than the thickness of the elastic sheet.

[0008] According to some embodiments of the present invention, along the arrangement direction of the first wall portion and the second wall portion, the elastic sheet is movable relative to the positioning portion.

[0009] According to some embodiments of the present invention, the first medium passing area is a flat plate structure, the elastic sheet is in contact with the first wall portion, and the elastic sheet blocks the first through hole.

[0010] According to some embodiments of the present invention, the first medium passing area is arc-shaped and protrudes toward the second wall portion, the elastic sheet abuts against the first wall portion, and at least a portion of the first through hole is spaced apart from the elastic sheet.

[0011] According to some embodiments of the present invention, the first medium passing area is arc-shaped and protrudes in a direction away from the second wall portion, the elastic sheet is in contact with the first wall portion, and the elastic sheet blocks the first through hole.

[0012] According to some embodiments of the present invention, the positioning portion includes: a first positioning column and a second positioning column, the first positioning column is fixed to the first wall portion, the second positioning column is fixed to the second wall portion, the second positioning column is formed with an assembly hole, the first positioning column is inserted into the assembly hole, the elastic sheet is sleeved on the first positioning column, and the end of the second positioning column facing away from the second wall portion abuts against the elastic sheet so that the elastic sheet abuts against the first wall portion.

[0013] According to some embodiments of the present invention, along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the first through hole and the orthographic projection of the second through hole are both located within the orthographic projection range of the elastic sheet.

[0014] According to some embodiments of the present invention, there are multiple first medium passing areas, multiple second medium passing areas, multiple elastic sheets and multiple positioning parts, and the multiple first medium passing areas, multiple second medium passing areas, multiple elastic sheets and multiple positioning parts correspond to each other one by one.

[0015] According to some embodiments of the present invention, the valve body device also includes: a first limiting ring, which is arranged in the medium channel and located on the side of the first wall portion facing away from the second wall portion, one end of the first limiting ring is fixed to the first wall portion, and along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the first through hole of at least one first medium passing area is located in the area defined by the orthographic projection of the first limiting ring.

[0016] According to some embodiments of the present invention, the valve body device also includes: a second limiting ring, the second limiting ring is arranged in the medium channel and is located on the side of the second wall portion facing away from the first wall portion, one end of the second limiting ring is fixed to the second wall portion, and along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the second through hole of at least one second medium passing area is located in the area defined by the orthographic projection of the second limiting ring.

[0017] According to some embodiments of the present invention, the positioning portion is correspondingly connected to the middle portion of the corresponding first medium passing zone and the middle portion of the corresponding second medium passing zone.

[0018] According to some embodiments of the present invention, the valve body comprises:

[0019] A first valve body body and a second valve body body, the first valve body body defines a first medium channel, the second valve body body defines a second medium channel, the first valve body body and the second valve body body are arranged along an extension direction of the medium channel and are fixedly connected, the first medium channel and the second medium channel are connected to form a medium channel, the first wall portion is fixedly disposed in the first medium channel, and the second wall portion is fixedly disposed in the second medium channel.

[0020] According to some embodiments of the present invention, the side wall of the first wall portion is fixedly connected to the first valve body, and the side wall of the second wall portion is fixedly connected to the second valve body.

[0021] According to some embodiments of the present invention, the combined valve assembly includes: a plurality of valve body devices, the plurality of valve body devices are all the valve body devices described above, and the plurality of valve body devices are sequentially connected in series.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic diagram of a valve body device according to an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view of a basic valve body device in a closed state according to a first embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view of a basic valve body device of the first embodiment of the present invention in an open state;

[0027] Figure 4 is a cross-sectional view of a basic valve body device in a cut-off state according to a first embodiment of the present invention;

[0028] Figure 5 is a functional curve diagram of a basic valve body device according to a first embodiment of the present invention;

[0029] Figure 6 is a cross-sectional view of an isobaric two-way valve body device in an open state according to a second embodiment of the present invention;

[0030] Figure 7 is a cross-sectional view of an isobaric two-way valve body device in a reverse closed state according to a second embodiment of the present invention;

[0031] Figure 8 is a cross-sectional view of an isobaric two-way valve body device in a forward cutoff state according to a second embodiment of the present invention;

[0032] Fig. 9 is a functional curve diagram of an isobaric two-way valve body device according to a second embodiment of the present invention;

[0033] Fig.10 is a cross-sectional view of a positive pressure opening type valve body device in a reverse cut-off state according to a third embodiment of the present invention;

[0034] Fig.11 is a cross-sectional view of a positive pressure opening type valve body device in an open state according to a third embodiment of the present invention;

[0035] Fig.12 is a cross-sectional view of a positive pressure opening type valve body device in a positive cut-off state according to a third embodiment of the present invention;

[0036] Fig.13 is a functional curve diagram of a positive pressure opening type valve body device according to a third embodiment of the present invention;

[0037] Fig.14 is a schematic diagram of a parallel combination valve assembly according to a fourth embodiment of the present invention;

[0038] Fig.15 It is a schematic diagram of the functional curve of the parallel combination of three positive pressure opening type valve body units and their relationship with the corresponding valve body units;

[0039] Fig.16 It is a schematic diagram of the functional curve of two positive pressure opening type valve body units connected in series and their relationship with the corresponding valve body units;

[0040] Fig.17 is a schematic diagram of a parallel combination valve assembly according to a fifth embodiment of the present invention;

[0041] Fig.18 2 is a schematic diagram from another perspective of the parallel combination valve assembly of the fifth embodiment of the present invention.

[0042] Reference numerals:

[0043] Valve body device 100;

[0044] Valve body 10; medium channel 11;

[0045] First wall portion 12; first medium passing area 121; first through hole 122;

[0046] Second wall portion 13; second medium passing area 131; second through hole 132;

[0047] First valve body 14; first medium channel 141;

[0048] Second valve body 15; second medium channel 151;

[0049] Elastic sheet 20;

[0050] Positioning portion 30; first positioning column 31; second positioning column 32; assembly hole 33;

[0051] A first limiting ring 40;

[0052] A second limiting ring 50;

[0053] Combined valve assembly 200; communicating space 300. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] Reference below Figure 1-Figure 18 A valve body device 100 and a combined valve assembly 200 according to an embodiment of the present invention are described.

[0056] like Figure 1-Figure 18 As shown, the valve body device 100 according to the embodiment of the present invention includes: a valve body main body 10, the valve body main body 10 defines a medium channel 11, a first wall portion 12 and a second wall portion 13, the first wall portion 12 and the second wall portion 13 are both arranged in the medium channel 11, along the extending direction of the medium channel 11, the first wall portion 12 and the second wall portion 13 are opposite and spaced apart, the first wall portion 12 has a first medium passing area 121, the first medium passing area 121 is formed with a first through hole 122, the second wall portion 13 has a first through hole 124 and a second through hole 125, and the second through hole 126 is formed in the first through hole 127. A second medium passing area 131 corresponding to the first medium passing area 121 is formed with a second through hole 132; an elastic sheet 20 and a positioning portion 30, the positioning portion 30 is fixed between the first wall portion 12 and the second wall portion 13, the elastic sheet 20 is arranged between the first wall portion 12 and the second wall portion 13 and is sleeved on the positioning portion 30, along the arrangement direction of the first wall portion 12 and the second wall portion 13, the elastic sheet 20 and the first medium passing area 121 and the second medium passing area 131 are arranged opposite to each other.

[0057] Among them, Figure 1As shown, the valve body 10 defines a medium channel 11, which can be used for circulating medium, and the medium can be a liquid medium, a gaseous medium, a steam medium, an acid-base medium, etc. The valve body 10 can be made of metal, plastic, etc. Specifically, the material of the valve body 10 can be reasonably selected according to the medium characteristics and the working environment, so that the valve body device 100 can be suitable for different working environments. The valve body device 100 includes: a first wall portion 12 and a second wall portion 13, for example: the first wall portion 12, the second wall portion 13 and the valve body 10 can be integrally formed, or the first wall portion 12, the second wall portion 13 and the valve body 10 can be connected by welding, but the present invention is not limited thereto, and the first wall portion 12, the second wall portion 13 and the valve body 10 can be connected by other methods.

[0058] like Figure 1 As shown, the first wall portion 12 and the second wall portion 13 are both arranged in the medium channel 11. Along the extension direction of the medium channel 11, the first wall portion 12 and the second wall portion 13 are opposite and spaced apart, so that a connecting space 300 is formed between the first wall portion 12 and the second wall portion 13. The first wall portion 12 has a first medium passing area 121, and the first medium passing area 121 is formed with a first through hole 122. The first through hole 122 can penetrate the first wall portion 12 along the thickness direction of the first wall portion 12, so that the first through hole 122 connects the medium channel 11 on the side of the first wall portion 12 away from the second wall portion 13 and the connecting space 300. The second wall portion 13 has a second medium passing area 131 corresponding to the first medium passing area 121, and the second medium passing area 131 is formed with a second through hole 132. The second through hole 132 can penetrate the first wall portion 12 along the thickness direction of the second wall portion 13, so that the second through hole 132 connects the medium channel 11 on the side of the second wall portion 13 away from the first wall portion 12 and the connecting space 300. Thus, the medium in the medium channel 11 can flow through the first through hole 122 and the second through hole 132 . When the first through hole 122 and the second through hole 132 are blocked, the medium in the medium channel 11 cannot flow through the first through hole 122 and the second through hole 132 .

[0059] like Fig.14As shown, the shapes of the first through hole 122 and the second through hole 132 can be circular, square, triangular, etc., but the present invention is not limited thereto. The first through hole 122 and the second through hole 132 can also be other shapes, as long as the first through hole 122 and the second through hole 132 can satisfy the normal operation of the valve body device 100. And the valve body device 100 has at least one first through hole 122 and a second through hole 132. For example, the valve body device 100 can have one, two, three, four, five, etc. first through holes 122 and second through holes 132, but the present invention is not limited thereto. The valve body device 100 can also have other numbers of first through holes 122 and second through holes 132, as long as the valve body device 100 has at least one first through hole 122 and a second through hole 132, as long as the valve body device 100 can satisfy the normal operation of the valve body device 100.

[0060] The elastic sheet 20 can be made of elastic materials such as rubber, non-woven fabric, paper, etc., but the present invention is not limited thereto. The elastic sheet 20 can also be made of other elastic materials as long as the elastic sheet 20 can be deformed to ensure the normal operation of the valve body device 100.

[0061] like Figure 1 As shown, the positioning portion 30 is fixed between the first wall portion 12 and the second wall portion 13. Specifically, the first wall portion 12 can be provided with a protrusion structure, and the second wall portion 13 can be provided with a groove structure. The protrusion structure and the groove structure can constitute the positioning portion 30. The elastic sheet 20 is arranged between the first wall portion 12 and the second wall portion 13 and is sleeved on the positioning portion 30. After the protrusion structure and the groove structure are assembled together, the first wall portion 12, the second wall portion 13 and the elastic sheet 20 can be positioned, thereby improving the reliability and safety of the valve body device 100.

[0062] Along the arrangement direction of the first wall portion 12 and the second wall portion 13, the elastic sheet 20 and the first medium passing area 121 and the second medium passing area 131 are arranged relative to each other, which is conducive to controlling whether the first through hole 122 and the second through hole 132 are connected through the blocking state of the elastic sheet 20 and the first through hole 122 and the second through hole 132. Specifically, when the elastic sheet 20 blocks the first through hole 122 or the second through hole 132, the first through hole 122 and the second through hole 132 are not connected, and the valve body device 100 is in a closed (cut-off) state. When the elastic sheet 20 is separated from the first through hole 122 and the second through hole 132, the first through hole 122 and the second through hole 132 can be connected, and the valve body device 100 is in an open state, so that the valve body device 100 can achieve the functions of two-way conduction and two-way cutoff, and the valve body device 100 has a simple structure, high reliability, and a small volume, which is conducive to reducing the number of parts, manufacturing difficulty, and manufacturing cost of the valve body device 100.

[0063] It can be explained that when the medium flows from the side of the first wall portion 12 away from the second wall portion 13 to the second wall portion 13 , it is a positive direction, and when the medium flows from the side of the second wall portion 13 away from the first wall portion 12 to the first wall portion 12 , it is a negative direction.

[0064] According to the valve body device 100 of the embodiment of the present invention, by arranging the elastic sheet 20 between the first wall portion 12 and the second wall portion 13 and sleeved on the positioning portion 30, along the arrangement direction of the first wall portion 12 and the second wall portion 13, the elastic sheet 20 and the first medium passing area 121 and the second medium passing area 131 are arranged opposite to each other, the first medium passing area 121 is formed with a first through hole 122, and the second medium passing area 131 is formed with a second through hole 132. By forming a pressure difference between the side of the first medium passing area 121 away from the second medium passing area 131 and the side of the second medium passing area 131 away from the first medium passing area 121, the valve body device 100 can realize the functions of two-way conduction and two-way cutoff, and the valve body device 100 has a simple structure, high reliability and small size, which is conducive to reducing the number of components, manufacturing difficulty and manufacturing cost of the valve body device 100.

[0065] According to some embodiments of the present invention, Figure 2 As shown, the spacing distance between the first wall portion 12 and the second wall portion 13 can be greater than the thickness of the elastic sheet 20, which can leave sufficient deformation space for the elastic sheet 20, thereby facilitating the elastic sheet 20 to deform between the first wall portion 12 and the second wall portion 13. Through the deformation of the elastic sheet 20, the elastic sheet 20 can fit the first wall portion 12 or the second wall portion 13, and can also be separated from the first wall portion 12 and the second wall portion 13, thereby realizing the conduction and cutoff of the valve body device 100.

[0066] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, along the arrangement direction of the first wall portion 12 and the second wall portion 13, the elastic sheet 20 is movable relative to the positioning portion 30. Specifically, when the pressure on the side of the first wall portion 12 away from the second wall portion 13 is significantly greater than the pressure on the side of the second wall portion 13 away from the first wall portion 12, the elastic sheet 20 moves toward the second wall portion 13, so that the elastic sheet 20 can fit the second wall portion 13 to cover the second through hole 132, thereby achieving the cutoff of the valve body device 100. When the pressure on the side of the first wall portion 12 away from the second wall portion 13 is the same or substantially the same as the pressure on the side of the second wall portion 13 away from the first wall portion 12, the elastic sheet 20 is located between the first wall portion 12 and the second wall portion 13, so that the elastic sheet 20 can be separated from both the first through hole 122 and the second through hole 132, thereby achieving the conduction of the valve body device 100. When the pressure on the side of the first wall portion 12 away from the second wall portion 13 is significantly lower than the pressure on the side of the second wall portion 13 away from the first wall portion 12, the elastic sheet 20 moves toward the first wall portion 12, so that the elastic sheet 20 can fit the first wall portion 12 to cover the first through hole 122, thereby achieving the cutoff of the valve body device 100.

[0067] Thus, the elastic piece 20 can be moved relative to the positioning portion 30 , so that the valve body device 100 can be further turned on and off.

[0068] The end of the elastic sheet 20 away from the positioning portion 30 can move toward the first wall portion 12 or the second wall portion 13, so that the elastic sheet 20 can fit the first through hole 122, the second through hole 132 or not fit the first through hole 122, the second through hole 132, thereby achieving the conduction and cutoff of the valve body device 100.

[0069] According to some embodiments of the present invention, Figure 2-Figure 4 As shown, the first medium passing area 121 may be a flat plate structure, the elastic sheet 20 is in contact with the first wall portion 12 , and the elastic sheet 20 blocks the first through hole 122 .

[0070] Among them, the first medium passing area 121 can be a flat plate structure, and the valve body device 100 with the first medium passing area 121 as a flat plate structure can be a basic type. This application takes the valve body device 100 placed in the left and right directions as an example for explanation.

[0071] Specifically, when the pressure of the medium source on the left side of the first wall portion 12 is significantly lower and the pressure of the medium source on the right side of the second wall portion 13 is significantly higher, the elastic sheet 20 fits against the first wall portion 12, and the elastic sheet 20 blocks the first through hole 122. At this time, the medium on the left side of the first wall portion 12 is not connected to the medium source on the right side of the second wall portion 13, and the valve body device 100 is in a closed state.

[0072] When the pressure of the medium source on the left side of the first wall portion 12 increases, or the pressure of the medium source on the right side of the second wall portion 13 decreases, a pressure difference begins to occur between the medium source on the left side of the first wall portion 12 and the medium source on the right side of the second wall portion 13. At this time, the elastic sheet 20 begins to bend and deform to a certain extent toward the second wall portion 13, so that the elastic sheet 20 is separated from the first through hole 122, thereby connecting the medium source on the left side of the first wall portion 12 with the medium source on the right side of the second wall portion 13, and the medium flows from the left side of the first wall portion 12 to the right side of the second wall portion 13. At this time, the valve body device 100 is in an open state.

[0073] When the pressure of the medium source on the left side of the first wall portion 12 further increases relative to the pressure of the medium source on the right side of the second wall portion 13, or when the pressure of the medium source on the right side of the second wall portion 13 further decreases relative to the pressure of the medium source on the left side of the first wall portion 12, the pressure difference between the medium source on the left side of the first wall portion 12 and the medium source on the right side of the second wall portion 13 further increases, thereby causing the elastic sheet 20 to bend and deform to a greater extent toward the second wall portion 13, until the elastic sheet 20 completely compresses and blocks the second through hole 132, the medium source on the left side of the first wall portion 12 is no longer connected to the medium source on the right side of the second wall portion 13, and the valve body device 100 enters the closed state again, that is, the cut-off state formed by the high pressure difference.

[0074] like Figure 5 As shown, it is a functional curve diagram of the basic valve body device of the first embodiment of the present invention, wherein the horizontal axis is the pressure difference, and the vertical axis is the medium fluid flow rate through the valve body device 100. By designing different parameters of the valve body device 100, for example: the size of the valve body device 100, the number of the first through holes 122 and the second through holes 132, the shape of the first through holes 122 and the second through holes 132, the position of the first through holes 122 and the second through holes 132, the volume of the first medium passing area 121 and the second medium passing area 131, the material of the elastic sheet 20, the size of the elastic sheet 20, the hardness of the elastic sheet 20, etc., different flow resistance relationship characteristics can be obtained, and the parameters of the valve body device 100 can be set according to the requirements of different application scenarios and applied to engineering practice.

[0075] According to some embodiments of the present invention, Figure 6-Figure 8 As shown, the first medium passing area 121 may be arc-shaped and protrude toward the second wall portion 13 , the elastic sheet 20 abuts against the first wall portion 12 , and at least a portion of the first through hole 122 is spaced apart from the elastic sheet 20 .

[0076] The first medium passage area 121 may be arc-shaped and protrude toward the second wall portion 13 , and the valve body device 100 having the first medium passage area 121 being arc-shaped and protruding toward the second wall portion 13 may be a single valve-isobaric two-way type valve body.

[0077] Specifically, Figure 6As shown, the first wall portion 12 can be configured to protrude toward the second wall portion 13. When the pressure of the medium source on the left side of the first wall portion 12 is equal to or approximately equal to the pressure of the medium source on the right side of the second wall portion 13, the elastic sheet 20 abuts against the first wall portion 12, and at least a portion of the first through hole 122 is spaced apart from the elastic sheet 20, so that the medium source on the left side of the first wall portion 12 is in a connected state with the medium source on the right side of the second wall portion 13. At this time, the valve body device 100 is in an open state.

[0078] like Figure 7 As shown, when the medium source pressure on the left side of the first wall portion 12 is significantly lower than the medium source pressure on the right side of the second wall portion 13, the medium flows from the right side of the second wall portion 13 to the left side of the first wall portion 12, and the medium flow rate through the second through hole 132 and the first through hole 122 increases sharply, and a negative pressure zone sufficient to overcome the elasticity of the elastic sheet 20 can be formed around the first through hole 122, so that the elastic sheet 20 bends and deforms toward the first wall portion 12 and completely fits and blocks the first through hole 122. At this time, the valve body device 100 is in a reverse closed state.

[0079] like Figure 8 As shown, when the pressure on the left side of the first wall portion 12 is significantly higher than the medium source pressure on the right side of the second wall portion 13, the medium flows from the left side of the first wall portion 12 to the right side of the second wall portion 13, and the medium flow rate through the first through hole 122 and the second through hole 132 increases sharply, and a negative pressure zone sufficient to overcome the elasticity of the elastic sheet 20 can be formed around the second through hole 132, so that the elastic sheet 20 bends and deforms toward the second wall portion 13 and completely fits and blocks the first through hole 122. At this time, the valve body device 100 is in a closed state (positive cut-off state).

[0080] like Fig. 9 , which is a function curve diagram of an isobaric two-way valve body device according to a second embodiment of the present invention, wherein the horizontal axis is the pressure difference, and the vertical axis is the medium fluid flow rate passing through the valve body device 100. By designing different parameters of the valve body device 100, such as: the size of the valve body device 100, the number of the first through holes 122 and the second through holes 132, the shape of the first through holes 122 and the second through holes 132, the position of the first through holes 122 and the second through holes 132, the volume of the first medium passing area 121 and the second medium passing area 131, the material of the elastic sheet 20, the size of the elastic sheet 20, the hardness of the elastic sheet 20, etc., different flow resistance relationship characteristics can be obtained. Fig. 9 The three curves have different free flow pressure limit ranges and different fluid damping characteristics during free flow. The parameters of the valve body device 100 can be set according to different application scenario requirements and applied in engineering practice.

[0081] According to some embodiments of the present invention, Figure 10-12As shown, the first medium passing area 121 may be arc-shaped and protrude in a direction away from the second wall portion 13 , the elastic sheet 20 is in contact with the first wall portion 12 , and the elastic sheet 20 blocks the first through hole 122 .

[0082] The first medium passage area 121 may be arc-shaped and protrude away from the second wall portion 13 , and the valve body device 100 in which the first medium passage area 121 is arc-shaped and protrudes away from the second wall portion 13 may be a single valve-positive pressure opening type valve body.

[0083] Specifically, the first wall portion 12 may be configured to protrude away from the second wall portion 13, such as Fig.10 As shown, when the pressure difference between the medium source on the left side of the first wall portion 12 and the medium source on the right side of the second wall portion 13 does not reach the critical value, the elastic sheet 20 fits with the first wall portion 12, and the elastic sheet 20 blocks the first through hole 122, and the medium source on the left side of the first wall portion 12 is not connected with the medium source on the right side of the second wall portion 13. At this time, the valve body device 100 is in a reverse cut-off state.

[0084] like Fig.11 As shown, when the pressure of the medium source on the left side of the first wall portion 12 increases, so that the pressure difference between the medium source on the left side of the first wall portion 12 and the medium source on the right side of the second wall portion 13 exceeds a critical value, the elastic sheet 20 begins to bend and deform to a certain extent toward the second wall portion 13, so that the elastic sheet 20 is separated from the first through hole 122, thereby connecting the medium source on the left side of the first wall portion 12 with the medium source on the right side of the second wall portion 13, and the medium flows from the left side of the first wall portion 12 to the right side of the second wall portion 13. At this time, the valve body device 100 is in an open state.

[0085] like Fig.12 As shown, when the pressure of the medium source on the left side of the first wall portion 12 continues to increase, the pressure difference between the medium source on the left side of the first wall portion 12 and the medium source on the right side of the second wall portion 13 is further increased, thereby causing the elastic sheet 20 to bend and deform to a greater extent toward the second wall portion 13, until the elastic sheet 20 completely compresses and blocks the second through hole 132. At this time, the valve body device 100 enters the closed state again, that is, the positive cut-off state formed by the high pressure difference.

[0086] like Fig.13As shown, it is a functional curve diagram of the positive pressure opening type valve body device of the third embodiment of the present invention. By designing different parameters of the valve body device 100, for example: the size of the valve body device 100, the number of the first through hole 122 and the second through hole 132, the shape of the first through hole 122 and the second through hole 132, the position of the first through hole 122 and the second through hole 132, the volume of the first medium passing area 121 and the second medium passing area 131, the material of the elastic sheet 20, the size of the elastic sheet 20, the hardness of the elastic sheet 20, etc., different flow resistance relationship characteristics can be obtained, and the parameters of the valve body device 100 can be set according to the requirements of different application scenarios and applied to engineering practice. Fig.13 The three curves have different free flow pressure limit ranges and different fluid damping characteristics during free flow. The parameters of the valve body device 100 can be set according to different application scenario requirements and applied in engineering practice.

[0087] Based on the above basic valve body device 100, different combination valve assemblies 200 can also be obtained by matching different mechanical matching shapes and combinations of multiple valve devices. For example, multiple identical or different valve body devices 100 can be connected in parallel, in series, or in a mixed combination of series and parallel like electrical components to obtain different combination valve assemblies 200.

[0088] It can be explained that by reversing the positive and negative directions of the above-mentioned single valve-positive pressure opening type valve body device 100, the corresponding single valve-reverse pressure opening type valve body device 100 can be obtained without changing the internal structure.

[0089] According to some embodiments of the present invention, Figure 1 As shown, the positioning portion 30 may include: a first positioning column 31 and a second positioning column 32, the first positioning column 31 is fixed to the first wall portion 12, the second positioning column 32 is fixed to the second wall portion 13, the second positioning column 32 is formed with an assembly hole 33, the first positioning column 31 is inserted into the assembly hole 33, the elastic sheet 20 is sleeved on the first positioning column 31, and the end of the second positioning column 32 facing away from the second wall portion 13 abuts against the elastic sheet 20, so that the elastic sheet 20 abuts against the first wall portion 12.

[0090] Among them, the positioning portion 30 may include: a first positioning column 31 and a second positioning column 32, the first positioning column 31 can be fixedly arranged on the first wall portion 12, for example: the first positioning column 31 and the first wall portion 12 can be integrally formed, or the first positioning column 31 and the first wall portion 12 can be connected by bonding, or the first positioning column 31 and the first wall portion 12 can be connected by welding, but the present invention is not limited to this, the first positioning column 31 and the first wall portion 12 can also be connected by other means, as long as the first positioning column 31 is fixedly arranged on the first wall portion 12.

[0091] The second positioning column 32 is fixedly provided on the second wall portion 13. For example, the second positioning column 32 and the second wall portion 13 can be formed as two parts, or the second positioning column 32 and the second wall portion 13 can be connected by bonding, or the second positioning column 32 and the second wall portion 13 can be connected by welding, but the present invention is not limited thereto. The second positioning column 32 and the second wall portion 13 can also be connected by other means, as long as the second positioning column 32 is fixedly provided on the second wall portion 13.

[0092] The second positioning column 32 can be formed with an assembly hole 33, and the assembly hole 33 can be adapted to the first positioning column 31 so that the first positioning column 31 can be smoothly inserted into the assembly hole 33. After the elastic sheet 20 is sleeved on the first positioning column 31, the first positioning column 31 is inserted into the assembly hole 33, and the end of the second positioning column 32 away from the second wall portion 13 can abut against the elastic sheet 20, so that the elastic sheet 20 abuts against the first wall portion 12, thereby realizing the positioning of the first wall portion 12, the second wall portion 13 and the elastic sheet 20. When the elastic sheet 20 is bent and deformed, the risk of the elastic sheet 20 falling off between the first wall portion 12 and the second wall portion 13 can be effectively reduced, thereby improving the reliability and safety of the valve body device 100.

[0093] According to some embodiments of the present invention, Figure 2 As shown, along the arrangement direction of the first wall portion 12 and the second wall portion 13, the orthographic projection of the first through hole 122 and the orthographic projection of the second through hole 132 are both located within the orthographic projection range of the elastic sheet 20. Such an arrangement can ensure that when the elastic sheet 20 is bent and deformed, the elastic sheet 20 can completely fit the first wall portion 12 and the second wall portion 13 to cover the first through hole 122 and the second through hole 132, thereby allowing the valve body device 100 to be in a closed (cut-off) state.

[0094] According to some embodiments of the present invention, the first medium passing area 121, the second medium passing area 131, the elastic sheet 20 and the positioning portion 30 can be multiple, and the multiple first medium passing areas 121, the multiple second medium passing areas 131, the multiple elastic sheets 20 and the multiple positioning portions 30 correspond to each other one by one.

[0095] Among them, the first medium passing area 121, the second medium passing area 131, the elastic sheet 20 and the positioning portion 30 can all be multiple, for example: the first medium passing area 121, the second medium passing area 131, the elastic sheet 20 and the positioning portion 30 can all be two, three, four or the like, but the present invention is not limited to this, and there can also be other numbers of first medium passing areas 121, second medium passing areas 131, elastic sheets 20 and positioning portions 30, as long as the first medium passing areas 121, the second medium passing areas 131, the elastic sheets 20 and the positioning portions 30 are all multiple.

[0096] The positioning portion 30 positions the elastic sheet 20 between the first medium passing area 121 and the second medium passing area 131, and the elastic sheet 20 can be bent and deformed between the first medium passing area 121 and the second medium passing area 131, which is conducive to the elastic sheet 20 changing the blocking state of the elastic sheet 20 and the first through hole 122 and the second through hole 132 through deformation, thereby realizing the connection or disconnection of the medium on the left side of the first wall portion 12 with the medium on the right side of the second wall portion 13, so that the valve body device 100 can achieve the functions of two-way conduction and two-way cutoff. Multiple first medium passing areas 121, multiple second medium passing areas 131, multiple elastic sheets 20 and multiple positioning portions 30 are arranged in a one-to-one correspondence, and can form multiple identical or different valve body units, each valve body unit includes a first medium passing area 121, a second medium passing area 131 and an elastic sheet 20, and a single valve body unit can be used alone, or multiple valve body units can be used in combination.

[0097] Furthermore, a plurality of identical or different valve body units may be connected in parallel, in series, or in a mixed combination of series and parallel like electrical components, thereby obtaining different valve body devices 100 .

[0098] It can be explained that if Fig.15 As shown, the flow characteristic of the valve body device 100 after multiple valve body units are connected in parallel is the same as the sum of the flows of all valve body units, and its flow-damping characteristic curve is approximately equal to the superposition of the curves of each valve body device 100 on the flow.

[0099] The valve units can also be connected in series. The flow resistance characteristics of different types of valve units connected in series are complicated. This application takes the case of two single valve-positive pressure opening type valve units connected in series as an example for explanation. Fig.16 As shown, the conduction pressure sections of the two valve body units are about 0.6 kPa and 1.7 kPa respectively. After the two valve body units are connected in series, the peak value of their conduction capacity is roughly equal to the peak value of the valve body unit with the smallest conduction capacity among the two valve body units it contains. Correspondingly, when the series combination valve assembly is turned on, the pressure drop at a certain flow rate is equal to the sum of the pressure drops of the two valve body units it contains at the same flow rate. Therefore, the functional effect of the valve body device 100 after series connection reflects a "bottleneck effect", and its use scenario is far less than the valve body device 100 after parallel connection.

[0100] In engineering applications, not only can the valve body device 100 of the present application be combined in series or in parallel, but the combined valve assembly can also be combined again according to engineering needs. The several types of combined valve assemblies and their fluid characteristics derived therefrom are numerous and are not described in detail in this application.

[0101] According to some embodiments of the present invention, Figure 17-Figure 18 As shown, the valve body device 100 may also include: a first limiting ring 40, the first limiting ring 40 is arranged in the medium channel 11 and is located on the side of the first wall portion 12 away from the second wall portion 13, one end of the first limiting ring 40 is fixed to the first wall portion 12, and along the arrangement direction of the first wall portion 12 and the second wall portion 13, the orthographic projection of the first through hole 122 of at least one first medium passing area 121 is located in the area defined by the orthographic projection of the first limiting ring 40.

[0102] Among them, the first limiting ring 40 can be arranged in the medium channel 11 and located on the side of the first wall portion 12 away from the second wall portion 13, and one end of the first limiting ring 40 is fixed to the first wall portion 12. For example, the first limiting ring 40 and the first wall portion 12 can be integrally formed, or the first limiting ring 40 and the first wall portion 12 can be fixedly connected by bonding, or the first limiting ring 40 and the first wall portion 12 can be fixedly connected by welding, but the present invention is not limited to this. The first limiting ring 40 and the first wall portion 12 can also be fixedly connected by other means, as long as one end of the first limiting ring 40 is fixed to the first wall portion 12.

[0103] Along the arrangement direction of the first wall portion 12 and the second wall portion 13, the orthographic projection of the first through hole 122 of at least one first medium passing area 121 is located within the area defined by the orthographic projection of the first limiting ring 40. For example, there may be one, two, three, four, or the like first through holes 122 of the first medium passing area 121 whose orthographic projections are located within the area defined by the orthographic projection of the first limiting ring 40, but the present invention is not limited thereto. There may also be other numbers of first through holes 122 of the first medium passing area 121 whose orthographic projections are located within the area defined by the orthographic projection of the first limiting ring 40, as long as the orthographic projection of at least one first through hole 122 of the first medium passing area 121 is located within the area defined by the orthographic projection of the first limiting ring 40.

[0104] Thus, by arranging the first limiting ring 40 in the medium channel 11 and on the side of the first wall portion 12 away from the second wall portion 13, and the orthographic projection of the first through hole 122 of the first medium passage area 121 is located in the area defined by the orthographic projection of the first limiting ring 40, the medium channel 11 connected by the first through hole 122 on the inner side of the first limiting ring 40 and the first through hole 122 on the outer side of the first limiting ring 40 can be separated, so that the first through hole 122 on the inner side of the first limiting ring 40 and the first through hole 122 on the outer side of the first limiting ring 40 can be connected to the medium channels 11 in different spaces, so that different types of media with different pressures can flow in the medium channel 11 inside the first limiting ring 40 and the medium channel 11 outside the first limiting ring 40, respectively. When the same type of media with different pressures flow in the medium channel 11 inside the first limiting ring 40 and the medium channel 11 outside the first limiting ring 40, the valve body unit inside the first limiting ring 40 and the valve body unit outside the first limiting ring 40 present different states, and thus the functions realized are also different.

[0105] Furthermore, if Figure 17-Figure 18 As shown, in the valve body device 100 in which multiple valve body units are combined in parallel, a single or multiple valve body units can be encircled by the first limiting ring 40, that is, the positive projection of the single or multiple valve body units is located within the area defined by the first limiting ring 40, so that the valve body unit on the inner side of the first limiting ring 40 is separated from the valve body unit on the outer side of the first limiting ring 40, and then different types of media with different pressures can flow through the first through holes 122 on the inner and outer sides of the first limiting ring 40, respectively, so that the valve body device 100 can be suitable for different working environments and realize different functions, and a single valve body device 100 has a simple structure, a small size and can realize complex functions, and connecting multiple valve body devices 100 in series will not increase the manufacturing complexity of the combined valve assembly 200, and can also widely combine combined valve assemblies 200 with different functions, and does not require complex mechanical structures, electromechanical control operators, controllers and other complex control sensing units, which greatly reduces the manufacturing difficulty and assembly complexity of the combined valve assembly 200 and can also reduce the manufacturing cost.

[0106] According to some embodiments of the present invention, Figure 17-Figure 18 As shown, the valve body device 100 may also include: a second limiting ring 50, the second limiting ring 50 is arranged in the medium channel 11 and is located on the side of the second wall portion 13 away from the first wall portion 12, one end of the second limiting ring 50 is fixed to the second wall portion 13, and along the arrangement direction of the first wall portion 12 and the second wall portion 13, the orthographic projection of the second through hole 132 of at least one second medium passing area 131 is located in the area defined by the orthographic projection of the second limiting ring 50.

[0107] Among them, the second limiting ring 50 can be arranged in the medium channel 11 and located on the side of the second wall portion 13 away from the first wall portion 12, and one end of the second limiting ring 50 is fixed to the second wall portion 13. For example, the second limiting ring 50 and the second wall portion 13 can be integrally formed, or the second limiting ring 50 and the second wall portion 13 can be fixedly connected by bonding, or the second limiting ring 50 and the second wall portion 13 can be fixedly connected by welding, but the present invention is not limited to this. The second limiting ring 50 and the second wall portion 13 can also be fixedly connected by other means, as long as one end of the second limiting ring 50 is fixed to the second wall portion 13.

[0108] Along the arrangement direction of the first wall portion 12 and the second wall portion 13, the orthographic projection of the second through hole 132 of at least one second medium passing area 131 is located within the area defined by the orthographic projection of the second limiting ring 50. For example, there may be one, two, three, four, etc. orthographic projections of the second through holes 132 of the second medium passing area 131 located within the area defined by the orthographic projection of the second limiting ring 50, but the present invention is not limited thereto. There may also be other numbers of orthographic projections of the second through holes 132 of the second medium passing area 131 located within the area defined by the orthographic projection of the second limiting ring 50, as long as the orthographic projection of the second through hole 132 of at least one second medium passing area 131 is located within the area defined by the orthographic projection of the second limiting ring 50. Such an arrangement can ensure that the medium flowing in the second limiting ring 50 can flow through the corresponding second through holes 132.

[0109] Thus, by arranging the second limiting ring 50 in the medium channel 11 and on the side of the second wall portion 13 away from the first wall portion 12, and the orthographic projection of the second through hole 132 of the second medium passage area 131 is located in the area defined by the orthographic projection of the second limiting ring 50, the medium channel 11 connected by the second through hole 132 on the inner side of the second limiting ring 50 and the second through hole 132 on the outer side of the second limiting ring 50 can be separated, so that the second through hole 132 on the inner side of the second limiting ring 50 and the second through hole 132 on the outer side of the second limiting ring 50 can be connected to the medium channels 11 in different spaces, so that different types of media with different pressures can flow in the medium channel 11 on the inner side of the second limiting ring 50 and the medium channel 11 on the outer side of the second limiting ring 50, respectively. When the same type of media with different pressures flow in the medium channel 11 on the inner side of the second limiting ring 50 and the medium channel 11 on the outer side of the second limiting ring 50, the valve body unit on the inner side of the second limiting ring 50 and the valve body unit on the outer side of the second limiting ring 50 present different states, and thus the functions realized are also different.

[0110] Further, if Figure 17-Figure 18As shown, in the valve body device 100 in which multiple valve body units are combined in parallel, a single or multiple valve body units can be encircled by the second limiting ring 50, that is, the positive projection of the single or multiple valve body units is located within the area defined by the second limiting ring 50, so that the valve body unit on the inner side of the second limiting ring 50 is separated from the valve body unit on the outer side of the second limiting ring 50, and then different types of media with different pressures can flow inside and outside the second limiting ring 50, respectively, so that the valve body device 100 can be suitable for different working environments and realize different functions, and a single valve body device 100 has a simple structure, a small size and can realize complex functions, and connecting multiple valve body devices 100 in series will not increase the manufacturing complexity of the combined valve assembly 200, and can also widely combine combined valve assemblies 200 with different functions, and does not require complex mechanical structures, electromechanical control operators, controllers and other complex control sensing units, further reducing the manufacturing difficulty and assembly complexity of the combined valve assembly 200, and can also further reduce the manufacturing cost.

[0111] According to some embodiments of the present invention, Figure 2 As shown, the positioning portion 30 can be correspondingly connected to the middle of the corresponding first medium passing area 121 and the middle of the corresponding second medium passing area 131, which is conducive to the precise alignment of the elastic sheet 20 with the corresponding first medium passing area 121 and the second medium passing area 131, thereby improving the stability and durability of the valve body device 100.

[0112] According to some embodiments of the present invention, Figure 2 As shown, the valve body 10 includes: a first valve body 14 and a second valve body 15, the first valve body 14 defines a first medium channel 141, the second valve body 15 defines a second medium channel 151, the first valve body 14 and the second valve body 15 are arranged along the extension direction of the medium channel 11 and are fixedly connected, the first medium channel 141 and the second medium channel 151 are connected to form the medium channel 11, the first wall portion 12 is fixedly disposed in the first medium channel 141, and the second wall portion 13 is fixedly disposed in the second medium channel 151.

[0113] Among them, the first valve body main body 14 can define a first medium channel 141, the second valve body main body 15 can define a second medium channel 151, the first valve body main body 14 and the second valve body main body 15 are arranged along the extension direction of the medium channel 11 and fixedly connected, the first valve body main body 14 and the second valve body main body 15 can be fixedly connected by welding, or the first valve body main body 14 and the second valve body main body 15 can be fixedly connected by snapping, but the present invention is not limited to this, the first valve body main body 14 and the second valve body main body 15 can also be fixedly connected by other means, as long as the first valve body main body 14 and the second valve body main body 15 are arranged along the extension direction of the medium channel 11 and fixedly connected.

[0114] The first medium channel 141 and the second medium channel 151 may be communicated to form the medium channel 11 , so that the medium may flow freely between the first medium channel 141 and the second medium channel 151 .

[0115] The first wall portion 12 can be fixedly disposed in the first medium channel 141, and the second wall portion 13 can be fixedly disposed in the second medium channel 151. The first wall portion 12 and the second wall portion 13 can separate the first medium channel 141 from the second medium channel 151, so that the first medium channel 141 and the second medium channel 151 can be connected or disconnected, thereby enabling the valve body device 100 to achieve the functions of two-way conduction and two-way cutoff, and also to guide the flow of the medium, maintain the integrity and strength of the medium flow channel, thereby improving the reliability of the valve body device 100.

[0116] According to some embodiments of the present invention, Figure 1 As shown, the side wall of the first wall portion 12 is fixedly connected to the first valve body 14. For example, the first wall portion 12 and the first valve body 14 can be integrally formed, or the first wall portion 12 and the first valve body 14 can be connected by bonding, or the first wall portion 12 and the first valve body 14 can be connected by welding, but the present invention is not limited to this. The first wall portion 12 and the first valve body 14 can also be connected by other means, as long as the side wall of the first wall portion 12 is fixedly connected to the first valve body 14.

[0117] The side wall of the second wall portion 13 is fixedly connected to the second valve body 15. For example, the second wall portion 13 and the second valve body 15 can be integrally formed, or the second wall portion 13 and the second valve body 15 can be connected by bonding, or the second wall portion 13 and the second valve body 15 can be connected by welding, but the present invention is not limited to this. The second wall portion 13 and the second valve body 15 can also be connected by other means, as long as the side wall of the second wall portion 13 is fixedly connected to the second valve body 15.

[0118] The present application takes the example of the integral molding of the first wall portion 12 and the first valve body 14, and the integral molding of the second wall portion 13 and the second valve body 15 as examples. Such a configuration can form a reliable seal between the side wall of the first wall portion 12 and the first valve body 14, and between the second wall portion 13 and the second valve body 15, thereby ensuring the integrity and sealing of the valve body device 100, thereby improving the reliability and performance of the valve body device 100.

[0119] According to some embodiments of the present invention, the combination valve assembly 200 may include: a plurality of valve body devices 100, for example: the combination valve assembly 200 may include two, three, four, etc. valve body devices 100, but the present invention is not limited thereto, and the combination valve assembly 200 may also include other numbers of valve body devices 100, as long as the combination valve assembly 200 includes a plurality of valve body devices 100.

[0120] Multiple valve body devices 100 can all be the above-mentioned valve body devices 100, and multiple valve body devices 100 can be connected in series in sequence, so as to achieve functions that a single valve body device 100 cannot achieve, and the structure of a single valve body device 100 is simple and easy to manufacture. The combined valve assembly 200 after series connection also has significant manufacturing cost advantages.

[0121] In summary, the valve body device 100 of the present application has a simple structure and can realize two-way conduction and two-way cutoff functions. Compared with similar valves in the prior art, it has a simple structure, is easy to manufacture, and has ample design space. It uses a smaller volume to achieve more complex functions and has a wide range of engineering reference prospects. In addition, the parallel combination valve assembly 200 in the present application allows mechanical system designers to design and select the valve body device 100 relatively more freely, and widely combine products with specific flow resistance characteristics, thereby realizing product diversification of the valve body device 100.

[0122] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0123] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve body device, characterized in that: include: a valve body, wherein the valve body defines a medium passage, A first wall portion and a second wall portion, wherein the first wall portion and the second wall portion are both arranged in the medium channel, and along the extending direction of the medium channel, the first wall portion and the second wall portion are opposite to and spaced apart from each other, the first wall portion has a first medium passing area, and the first medium passing area is formed with a first through hole, and the second wall portion has a second medium passing area corresponding to the first medium passing area, and the second medium passing area is formed with a second through hole; An elastic sheet and a positioning portion, wherein the positioning portion is fixedly arranged between the first wall portion and the second wall portion, the elastic sheet is arranged between the first wall portion and the second wall portion and sleeved on the positioning portion, and along the arrangement direction of the first wall portion and the second wall portion, the elastic sheet is arranged opposite to the first medium passing area and the second medium passing area.

2. The valve body device according to claim 1, characterized in that: The spacing distance between the first wall portion and the second wall portion is greater than the thickness of the elastic sheet.

3. The valve body device according to claim 2, characterized in that: Along an arrangement direction of the first wall portion and the second wall portion, the elastic sheet is movable relative to the positioning portion.

4. The valve body device according to claim 2, characterized in that: The first medium passing area is a flat plate structure, the elastic sheet is in contact with the first wall portion, and the elastic sheet blocks the first through hole.

5. The valve body device according to claim 2, characterized in that: The first medium passing area is arc-shaped and protrudes toward the second wall portion, the elastic sheet abuts against the first wall portion, and at least a portion of the first through hole is spaced apart from the elastic sheet.

6. The valve body device according to claim 2, characterized in that: The first medium passing area is arc-shaped and protrudes in a direction away from the second wall portion. The elastic sheet is in contact with the first wall portion, and the elastic sheet blocks the first through hole.

7. The valve body device according to claim 2, characterized in that: The positioning portion includes: a first positioning column and a second positioning column, the first positioning column is fixedly arranged on the first wall portion, the second positioning column is fixedly arranged on the second wall portion, the second positioning column is formed with an assembly hole, the first positioning column is inserted into the assembly hole, the elastic sheet is sleeved on the first positioning column, and the end of the second positioning column away from the second wall portion abuts against the elastic sheet so that the elastic sheet abuts against the first wall portion.

8. The valve body device according to claim 2, characterized in that: Along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the first through hole and the orthographic projection of the second through hole are both located within the orthographic projection range of the elastic sheet.

9. The valve body device according to any one of claims 1 to 8, characterized in that: There are multiple first medium passing areas, multiple second medium passing areas, multiple elastic sheets and multiple positioning parts, and the multiple first medium passing areas, multiple second medium passing areas, multiple elastic sheets and multiple positioning parts correspond to each other one by one.

10. The valve body device according to claim 9, characterized in that: Also includes: A first limiting ring, wherein the first limiting ring is arranged in the medium channel and is located on the side of the first wall portion away from the second wall portion, one end of the first limiting ring is fixed to the first wall portion, and along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the first through hole of at least one of the first medium passing areas is located within the area defined by the orthographic projection of the first limiting ring.

11. The valve body device according to claim 10, characterized in that: Also includes: A second limiting ring is arranged in the medium channel and is located on the side of the second wall portion away from the first wall portion. One end of the second limiting ring is fixed to the second wall portion. Along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the second through hole of at least one second medium passing area is located within the area defined by the orthographic projection of the second limiting ring.

12. The valve body device according to claim 9, characterized in that: The positioning portion is correspondingly connected to a middle portion of the corresponding first medium passing zone and a middle portion of the corresponding second medium passing zone.

13. The valve body device according to any one of claims 1 to 8, characterized in that: The valve body comprises: A first valve body and a second valve body, the first valve body defines a first medium channel, the second valve body defines a second medium channel, the first valve body and the second valve body are arranged along an extension direction of the medium channel and are fixedly connected, the first medium channel and the second medium channel are connected to form the medium flow channel, the first wall portion is fixedly disposed in the first medium channel, and the second wall portion is fixedly disposed in the second medium channel.

14. The valve body device according to any one of claims 13, characterized in that: The side wall of the first wall portion is fixedly connected to the first valve body, and the side wall of the second wall portion is fixedly connected to the second valve body.

15. A combined valve assembly, characterized in that: include: A plurality of valve body devices, each of which is a valve body device according to any one of claims 1 to 14, and the plurality of valve body devices are connected in series in sequence.

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