Valve body device and combined valve assembly

Abstract

The application discloses a valve body device and a combined valve assembly, and relates to the technical field of valve bodies.The valve body device comprises a valve body main body, a first wall part, a second wall part, a positioning part and an elastic sheet.The valve body main body defines a medium channel.The first wall part is provided with a first medium passing area, and the first medium passing area is formed with a first through hole.The second wall part is provided with a second medium passing area, and the second medium passing area is formed with a second through hole.The positioning part is fixed between the first wall part and the second wall part, and the elastic sheet is arranged between the first wall part and the second wall part and is sleeved on the positioning part.The elastic sheet is oppositely arranged with the first medium passing area and the second medium passing area.A pressure difference is formed between 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 bidirectional conduction and bidirectional cut-off, and has the advantages of simple structure, high reliability, small size, reduced number of parts, manufacturing difficulty and manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of valve body technology, and in particular to a valve body device and a combined valve assembly. Background Technology

[0002] In related technologies, the valve body is a control component in a pipeline fluid transport system, used to change the cross-sectional area of ​​the passage and the direction of medium flow, and has functions such as guiding, shutting off, throttling, checking back, diverting, or overflowing and relieving pressure. Existing valve bodies have relatively complex mechanical structures, many parts, and often require electromagnetic control and computing mechanisms, resulting in high manufacturing difficulty, low reliability, and high cost. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a valve body device that enables bidirectional conduction and bidirectional shut-off functions, and which has a simple structure, high reliability, and helps to reduce the number of parts, manufacturing difficulty, and manufacturing cost of the valve body device.

[0004] The present invention further proposes a combined valve assembly having the above-described valve body device.

[0005] According to an embodiment of the present invention, a valve body device includes: a valve body body defining a medium channel; a first wall portion and a second wall portion, both disposed within the medium channel; the first wall portion and the second wall portion being opposite to and spaced apart along the extension direction of the medium channel; the first wall portion having a first medium passage area with a first through hole formed therein; the second wall portion having a second medium passage area corresponding to the first medium passage area with a second through hole formed therein; an elastic sheet and a positioning portion, the positioning portion being fixed between the first wall portion and the second wall portion; the elastic sheet being disposed between the first wall portion and the second wall portion and sleeved on the positioning portion; the elastic sheet being opposite to both the first medium passage area and the second medium passage area along the arrangement direction of the first wall portion and the second wall portion.

[0006] According to the valve body device of the present invention, by disposing an elastic sheet between the first wall portion and the second wall portion and sleeved on the positioning portion, the elastic sheet is disposed opposite to both the first medium passage area and the second medium passage area along the arrangement direction of the first wall portion and the second wall portion. The first medium passage area has a first through hole, and the second medium passage area has a second through hole. A pressure difference is formed between the side of the first medium passage area away from the second medium passage area and the side of the second medium passage area away from the first medium passage area, which enables the valve body device to achieve bidirectional conduction and bidirectional shut-off functions. Furthermore, the valve body device has a simple structure, high reliability, and small size, which helps to reduce the number of parts, manufacturing difficulty, and manufacturing cost of the valve body device.

[0007] According to some embodiments of the present invention, the 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, the elastic sheet is movable relative to the positioning portion along the arrangement direction of the first wall portion and the second wall portion.

[0009] According to some embodiments of the present invention, the first medium passage area is a flat plate structure, the elastic sheet is attached to 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 passage 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 passage area is arc-shaped and protrudes in a direction away from the second wall portion, the elastic sheet is attached to the first wall portion, and the elastic sheet blocks the first through hole.

[0012] According to some embodiments of the present invention, the positioning part includes: a first positioning post and a second positioning post, the first positioning post being fixed to a first wall portion, the second positioning post being fixed to a second wall portion, the second positioning post having an assembly hole, the first positioning post being inserted into the assembly hole, an elastic sheet being sleeved on the first positioning post, and the end of the second positioning post facing away from the second wall portion abutting 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 passage areas, multiple second medium passage areas, multiple elastic sheets and multiple positioning parts, and the multiple first medium passage areas, multiple second medium passage areas, multiple elastic sheets and multiple positioning parts correspond one-to-one.

[0015] According to some embodiments of the present invention, the valve body device further includes: a first limiting ring, which is disposed in the medium channel and located on the side of the first wall portion away from the second wall portion, one end of the first limiting ring being 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 passage area is located within 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 further includes: a second limiting ring, the second limiting ring being disposed in the medium channel and located on the side of the second wall portion away from the first wall portion, one end of the second limiting ring being 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 passage area is located within the area defined by the orthographic projection of the second limiting ring.

[0017] In some embodiments of the present invention, the positioning part is correspondingly connected to the middle part of the corresponding first medium passage area and the middle part of the corresponding second medium passage area.

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

[0019] A first valve body and a second valve body, the first valve body defining a first medium channel, the second valve body defining a second medium channel, the first valve body and the second valve body being arranged and fixedly connected along the extension direction of the medium channel, the first medium channel and the second medium channel being connected to form a medium channel, the first wall being fixedly disposed in the first medium channel, and the second wall being fixedly disposed in the second medium channel.

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

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

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

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

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

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

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

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

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

[0029] Figure 6 This is a cross-sectional view of the equal pressure double-pass valve body device of the second embodiment of the present invention in the open state;

[0030] Figure 7 This is a cross-sectional view of the equal pressure double-pass valve body device of the second embodiment of the present invention in the reverse closed state;

[0031] Figure 8 This is a cross-sectional view of the equal pressure double-pass valve body device of the second embodiment of the present invention in the positive cut-off state;

[0032] Figure 9 This is a functional curve diagram of the equal pressure double-pass valve body device according to the second embodiment of the present invention;

[0033] Figure 10 This is a cross-sectional view of the positive pressure opening valve body device of the third embodiment of the present invention in the reverse shut-off state;

[0034] Figure 11 This is a cross-sectional view of the positive pressure opening valve body device of the third embodiment of the present invention in the open state;

[0035] Figure 12 This is a cross-sectional view of the positive pressure opening valve body device of the third embodiment of the present invention in the positive shut-off state;

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

[0037] Figure 14 This is a schematic diagram of the parallel combined valve assembly according to the fourth embodiment of the present invention;

[0038] Figure 15 It is a schematic diagram of the parallel combination function curves of three positive pressure opening valve body units and their relationship with the corresponding valve body units;

[0039] Figure 16 This is a schematic diagram showing the functional curves of two positive pressure opening valve body units connected in series and their relationship with the corresponding valve body units.

[0040] Figure 17 This is a schematic diagram of the parallel combined valve assembly according to the fifth embodiment of the present invention;

[0041] Figure 18 This is a schematic diagram of the parallel combination valve assembly according to the fifth embodiment of the present invention from another perspective.

[0042] Figure label:

[0043] Valve body assembly 100;

[0044] Valve body 10; Medium passage 11;

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

[0046] Second wall portion 13; Second medium passage 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 part 30; First positioning post 31; Second positioning post 32; Assembly hole 33;

[0051] First limiting ring 40;

[0052] Second limiting ring 50;

[0053] Combined valve assembly 200; communication space 300. Detailed Implementation

[0054] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0055] The following is for reference. Figures 1-18 A valve body device 100 and a combined valve assembly 200 according to embodiments of the present invention are described.

[0056] like Figures 1-18 As shown, the valve body device 100 according to an embodiment of the present invention includes: a valve body body 10, the valve body body 10 defining a medium channel 11, a first wall portion 12 and a second wall portion 13, both the first wall portion 12 and the second wall portion 13 being disposed within 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 to and spaced apart. The first wall portion 12 has a first medium passage area 121, and the first medium passage area 121 is formed with a first through hole 122. The second wall portion 13 has a first medium passage area 121 and a first through hole 122. A second medium passage area 131 corresponding to a medium passage area 121 is formed in the second medium passage area 131, and a second through hole 132 is formed therein; an elastic sheet 20 and a positioning part 30 are provided, the positioning part 30 is fixed between the first wall part 12 and the second wall part 13, the elastic sheet 20 is disposed between the first wall part 12 and the second wall part 13 and sleeved on the positioning part 30, and along the arrangement direction of the first wall part 12 and the second wall part 13, the elastic sheet 20 is disposed opposite to both the first medium passage area 121 and the second medium passage area 131.

[0057] Among them, such as Figure 1As shown, the valve body 10 defines a medium channel 11, which can be used for the flow of a medium. The medium can be a liquid medium, a gaseous medium, a steam medium, an acid or alkali medium, etc. The valve body 10 can be made of materials such as metal or plastic. Specifically, the material of the valve body 10 can be reasonably selected according to the characteristics of the medium 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 and the second wall portion 13 can be integrally formed with the valve body 10, or the first wall portion 12 and the second wall portion 13 can be connected to the valve body 10 by welding. However, the present invention is not limited to this, and the first wall portion 12 and the second wall portion 13 can be connected to the valve body 10 by other means.

[0058] like Figure 1 As shown, both the first wall portion 12 and the second wall portion 13 are disposed within 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 to each other and spaced apart, forming a communicating space 300 between them. The first wall portion 12 has a first medium passage area 121, and a first through hole 122 is formed in the first medium passage area 121. The first through hole 122 can penetrate the first wall portion 12 along its thickness direction, so that the first through hole 122 connects the medium channel 11 on the side of the first wall portion 12 opposite to the second wall portion 13 and the communicating space 300. The second wall portion 13 has a second medium passage area 131 corresponding to the first medium passage area 121, and a second through hole 132 is formed in the second medium passage area 131. The second through hole 132 can penetrate the first wall portion 12 along its thickness direction, so that the second through hole 132 connects the medium channel 11 on the side of the second wall portion 13 opposite to the first wall portion 12 and the communicating space 300. Therefore, 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 Figure 14As shown, the first through hole 122 and the second through hole 132 can be circular, square, triangular, or other shapes, but the present invention is not limited to these. 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 meet the normal operation of the valve body device 100. Furthermore, the valve body device 100 has at least one first through hole 122 and one second through hole 132. For example, the valve body device 100 can have one, two, three, four, five, or other numbers of first through holes 122 and second through holes 132, but the present invention is not limited to these. 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 one second through hole 132, which can meet 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, and paper, but the present invention is not limited to these. The elastic sheet 20 can also be made of other elastic materials, as long as the elastic sheet 20 can be deformed to meet the normal operation of the valve body device 100.

[0061] like Figure 1 As shown, the positioning part 30 is fixed between the first wall part 12 and the second wall part 13. Specifically, the first wall part 12 may have a protruding structure, and the second wall part 13 may have a groove structure. The protruding structure and the groove structure can form the positioning part 30. The elastic piece 20 is disposed between the first wall part 12 and the second wall part 13 and sleeved on the positioning part 30. After the protruding structure and the groove structure are assembled together, the positioning of the first wall part 12, the second wall part 13 and the elastic piece 20 can be realized, 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 is arranged opposite to the first medium passage area 121 and the second medium passage area 131. This facilitates the control of whether the first through hole 122 and the second through hole 132 are connected by the blocking state of the elastic sheet 20 with respect to 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 are connected, and the valve body device 100 is in an open state. Thus, the valve body device 100 can achieve bidirectional conduction and bidirectional cut-off functions. Furthermore, the valve body device 100 has a simple structure, high reliability, and small size, which helps to reduce 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 in the 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 in the negative direction.

[0064] According to the embodiment of the present invention, the valve body device 100 is provided with an elastic sheet 20 disposed 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 is disposed opposite to the first medium passage area 121 and the second medium passage area 131. The first medium passage area 121 is formed with a first through hole 122, and the second medium passage area 131 is formed with a second through hole 132. By forming a pressure difference between the side of the first medium passage area 121 away from the second medium passage area 131 and the side of the second medium passage area 131 away from the first medium passage area 121, the valve body device 100 can realize the functions of bidirectional conduction and bidirectional cutoff. Furthermore, the valve body device 100 has a simple structure, high reliability, and small size, which is beneficial to reducing the number of parts, manufacturing difficulty, and manufacturing cost of the valve body device 100.

[0065] According to some embodiments of the present invention, such as Figure 2 As shown, the 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 provide sufficient deformation space for the elastic sheet 20. This facilitates the deformation of the elastic sheet 20 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 be made to fit against the first wall portion 12 or the second wall portion 13, or it can be made to separate from both the first wall portion 12 and the second wall portion 13, thereby enabling the valve body device 100 to be turned on and off.

[0066] According to some embodiments of the present invention, such as 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 towards the second wall portion 13, allowing the elastic sheet 20 to fit against the second wall portion 13 to block the second through hole 132, thereby achieving the shut-off 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 as or approximately 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, allowing the elastic sheet 20 to separate 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 less 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 against the first wall portion 12 to block the first through hole 122, thereby enabling the valve body device 100 to be shut off.

[0067] Therefore, by allowing the elastic sheet 20 to move relative to the positioning part 30, the valve body device 100 can be further opened and closed.

[0068] The end of the elastic piece 20 away from the positioning part 30 can move toward the first wall part 12 or the second wall part 13, so that the elastic piece 20 can fit into the first through hole 122 or the second through hole 132 or not fit into the first through hole 122 or the second through hole 132, thereby enabling the valve body device 100 to open and close.

[0069] According to some embodiments of the present invention, such as Figures 2-4 As shown, the first medium passage area 121 can be a flat plate structure, the elastic sheet 20 is attached to the first wall portion 12, and the elastic sheet 20 blocks the first through hole 122.

[0070] The first medium passage area 121 can be a flat plate structure, and the valve body device 100 with the first medium passage area 121 being a flat plate structure can be a basic type. This application will describe the valve body device 100 as being placed in the left-right direction.

[0071] Specifically, when the medium source pressure on the left side of the first wall 12 is significantly lower and the medium source pressure on the right side of the second wall 13 is significantly higher, the elastic sheet 20 is in contact with the first wall 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 12 and the medium source on the right side of the second wall 13 are not connected, and the valve body device 100 is in the closed state.

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

[0073] When the pressure of the medium source on the left side of the first wall 12 increases further relative to the pressure of the medium source on the right side of the second wall 13, or when the pressure of the medium source on the right side of the second wall 13 decreases further relative to the pressure of the medium source on the left side of the first wall 12, the pressure difference between the medium source on the left side of the first wall 12 and the medium source on the right side of the second wall 13 increases further. This causes the elastic plate 20 to bend and deform more towards the second wall 13 until the elastic plate 20 completely presses down and blocks the second through hole 132. At this point, the medium source on the left side of the first wall 12 and the medium source on the right side of the second wall 13 are no longer connected. At this time, the valve body device 100 enters the closed state again, which is the cut-off state formed by the high pressure difference.

[0074] like Figure 5 The diagram shown is a functional curve of the basic valve body device according to the first embodiment of the present invention. The horizontal axis represents the pressure difference, and the vertical axis represents the flow rate of the medium fluid 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 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 passage area 121 and the second medium passage area 131, the material of the elastic sheet 20, the size of the elastic sheet 20, and the softness and hardness of the elastic sheet 20, different flow resistance characteristics can be obtained. The parameters of the valve body device 100 can be set according to different application scenario requirements and applied in engineering practice.

[0075] According to some embodiments of the present invention, such as Figures 6-8 As shown, the first medium passage area 121 can 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 can be arc-shaped and protrude toward the second wall 13. The valve body device 100, in which the first medium passage area 121 is arc-shaped and protrudes toward the second wall 13, can be a single valve-equal pressure double-pass valve body.

[0077] Specifically, such as 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 and the medium source on the right side of the second wall portion 13 are in a communication state. 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 12 is significantly lower than the medium source pressure on the right side of the second wall 13, the medium flows from the right side of the second wall 13 to the left side of the first wall 12. The medium flow velocity 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 towards the first wall 12 and completely fits and blocks the first through hole 122. At this time, the valve body device 100 is in the reverse closed state.

[0079] like Figure 8 As shown, when the pressure on the left side of the first wall 12 is significantly higher than the pressure of the medium source on the right side of the second wall 13, the medium flows from the left side of the first wall 12 to the right side of the second wall 13. The medium flow velocity 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 towards the second wall 13 and completely fits and blocks the first through hole 122. At this time, the valve body device 100 is in the closed state (positive shut-off state).

[0080] like Figure 9 The diagram shown is a functional curve of the equal pressure dual-way valve body device according to the second embodiment of the present invention. The horizontal axis represents the pressure difference, and the vertical axis represents the flow rate of the medium fluid 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 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 passage area 121 and the second medium passage area 131, the material of the elastic plate 20, the size of the elastic plate 20, and the hardness of the elastic plate 20, different flow resistance characteristics can be obtained. Figure 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 scenarios and applied in engineering practice.

[0081] According to some embodiments of the present invention, such as Figures 10-12As shown, the first medium passage area 121 can be arc-shaped and protrude in the direction away from the second wall portion 13. The elastic sheet 20 fits against the first wall portion 12 and blocks the first through hole 122.

[0082] The first medium passage area 121 can be arc-shaped and protrude in the direction away from the second wall 13. The valve body device 100 with the first medium passage area 121 being arc-shaped and protruding in the direction away from the second wall 13 can be a single valve - positive pressure opening type valve body.

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

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

[0085] like Figure 12 As shown, when the pressure of the medium source on the left side of the first wall 12 continues to increase, the pressure difference between the medium source on the left side of the first wall 12 and the medium source on the right side of the second wall 13 will further increase, which will cause the elastic plate 20 to bend and deform towards the second wall 13 to a greater extent until the elastic plate 20 completely presses and blocks the second through hole 132. At this time, the valve body device 100 enters the closed state again, which is the positive cut-off state formed by the high pressure difference.

[0086] like Figure 13The diagram shown is a functional curve of the positive pressure opening valve body device according to the third embodiment of the present invention. 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 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 passage area 121 and the second medium passage area 131, the material of the elastic sheet 20, the size of the elastic sheet 20, and the softness and hardness of the elastic sheet 20, different flow resistance characteristics can be obtained. The parameters of the valve body device 100 can be set according to different application scenario requirements and applied in engineering practice. Figure 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 scenarios and applied in engineering practice.

[0087] Based on the above basic valve body device 100, different combined valve assemblies 200 can be obtained by matching different mechanical fit shapes and combining multiple valve devices. For example, multiple identical or different valve body devices 100 can be connected in parallel, in series or in a series-parallel hybrid combination, similar to electrical components, to obtain different combined valve assemblies 200.

[0088] It can be explained that by reversing the positive and negative directions of the above-mentioned single-unit valve-positive pressure opening type valve body device 100, the internal structure remains unchanged, and the corresponding single-unit valve-reverse pressure opening type valve body device 100 can be obtained.

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

[0090] The positioning part 30 may include a first positioning post 31 and a second positioning post 32. The first positioning post 31 may be fixed to the first wall part 12. For example, the first positioning post 31 and the first wall part 12 may be integrally formed, or the first positioning post 31 and the first wall part 12 may be connected by adhesive bonding, or the first positioning post 31 and the first wall part 12 may be connected by welding. However, the present invention is not limited to this. The first positioning post 31 and the first wall part 12 may also be connected in other ways, as long as the first positioning post 31 is fixed to the first wall part 12.

[0091] The second positioning post 32 is fixed to the second wall portion 13. For example, the second positioning post 32 and the second wall portion 13 can be integrally formed, or the second positioning post 32 and the second wall portion 13 can be connected by adhesive bonding, or the second positioning post 32 and the second wall portion 13 can be connected by welding. However, the present invention is not limited to these. The second positioning post 32 and the second wall portion 13 can also be connected in other ways, as long as the second positioning post 32 is fixed to the second wall portion 13.

[0092] The second positioning post 32 may have an assembly hole 33, which can be adapted to the first positioning post 31 so that the first positioning post 31 can be smoothly inserted into the assembly hole 33. After the elastic piece 20 is sleeved on the first positioning post 31, the first positioning post 31 is inserted into the assembly hole 33. The end of the second positioning post 32 away from the second wall portion 13 can abut against the elastic piece 20 so that the elastic piece 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 piece 20. When the elastic piece 20 is bent and deformed, the risk of the elastic piece 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, such as 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. This arrangement ensures that when the elastic sheet 20 undergoes bending deformation, it can completely fit the first wall portion 12 and the second wall portion 13 to block the first through hole 122 and the second through hole 132, thereby enabling the valve body device 100 to have a closed (stopped) state.

[0094] According to some embodiments of the present invention, there can be multiple first medium passage areas 121, second medium passage areas 131, elastic sheets 20 and positioning parts 30, and the multiple first medium passage areas 121, multiple second medium passage areas 131, multiple elastic sheets 20 and multiple positioning parts 30 correspond one-to-one.

[0095] The first medium passage area 121, the second medium passage area 131, the elastic sheet 20, and the positioning part 30 can each be multiple. For example, there can be two, three, four, or other quantities of the first medium passage area 121, the second medium passage area 131, the elastic sheet 20, and the positioning part 30. However, the present invention is not limited to this, and there can be other quantities of the first medium passage area 121, the second medium passage area 131, the elastic sheet 20, and the positioning part 30, as long as there are multiple first medium passage areas 121, the second medium passage area 131, the elastic sheet 20, and the positioning part 30.

[0096] The positioning part 30 positions the elastic piece 20 between the first medium passage area 121 and the second medium passage area 131. The elastic piece 20 can be bent and deformed between these two areas, allowing it to change its blocking state with the first through hole 122 and the second through hole 132. This enables the medium on the left side of the first wall 12 to communicate with or not communicate with the medium on the right side of the second wall 13, thus enabling the valve body device 100 to achieve bidirectional conduction and bidirectional shut-off functions. Multiple first medium passage areas 121, multiple second medium passage areas 131, multiple elastic pieces 20, and multiple positioning parts 30 are arranged in a one-to-one correspondence, forming multiple identical or different valve body units. Each valve body unit includes one first medium passage area 121, one second medium passage area 131, and one elastic piece 20. A single valve body unit can be used individually, or multiple valve body units can be combined for use.

[0097] Furthermore, multiple identical or different valve body units can be connected in parallel, series, or a combination of series and parallel, similar to electrical components, to obtain different valve body devices 100.

[0098] It can be explained that, for example Figure 15 As shown, the flow characteristics of the valve body device 100 after multiple valve body units are connected in parallel are the same as the sum of the flow rates of all valve body units. Its flow-damping characteristic curve is approximately equal to the superposition of the curves of each valve body device 100 on the flow rate.

[0099] Valve body units can also be connected in series. The flow resistance characteristics of different types of valve body units connected in series are complex. This application uses the case of two single-unit valves—positive pressure opening type valve body units—connected in series as an example for illustration. Figure 16 As shown, the conduction pressure ranges of the two valve body units are approximately 0.6 kPa and 1.7 kPa, respectively. When the two valve body units are connected in series, the peak 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-connected valve assembly is in operation, the pressure drop at a certain flow rate is equal to the sum of the pressure drops of each of the two valve body units it contains at the same flow rate. Therefore, the function of the series-connected valve body device 100 exhibits a "bottleneck effect," and its application scenarios are far smaller than those of the parallel-connected valve body device 100.

[0100] In engineering applications, the valve body device 100 of this application can be connected in series or in parallel. The combined valve assembly can also be recombined according to the engineering needs. As a result, there are many kinds of combined valve assemblies and their fluid characteristics, which will not be specifically described in this application.

[0101] According to some embodiments of the present invention, such as Figures 17-18 As shown, the valve body device 100 may further include: a first limiting ring 40, which is disposed in the medium channel 11 and 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. 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 passage area 121 is located within the area defined by the orthographic projection of the first limiting ring 40.

[0102] The first limiting ring 40 can be disposed in the medium channel 11 and 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. 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 adhesive, or the first limiting ring 40 and the first wall portion 12 can be fixedly connected by welding. However, the present invention is not limited to these. 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 at least one first medium passing through area 121 of the first through hole 122 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 other numbers of first medium passing through area 121 of the first through hole 122 located within the area defined by the orthographic projection of the first limiting ring 40. However, the present invention is not limited to this. There may also be other numbers of first medium passing through area 121 of the first through hole 122 located within the area defined by the orthographic projection of the first limiting ring 40, as long as at least one first medium passing through area 121 of the first through hole 122 is located within the area defined by the orthographic projection of the first limiting ring 40.

[0104] Therefore, by placing the first limiting ring 40 inside the medium channel 11 and on the side of the first wall portion 12 away from the second wall portion 13, and with the orthographic projection of the first through hole 122 of the first medium passage area 121 located within the area defined by the orthographic projection of the first limiting ring 40, the medium channel 11 connected to the first through hole 122 inside the first limiting ring 40 and the first through hole 122 outside the first limiting ring 40 can be separated, so that the first through hole 122 inside the first limiting ring 40 and the first through hole 122 outside the first limiting ring 40 can connect medium channels 11 in different spaces. Thus, different types and pressures of medium 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 medium with different pressures flows 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 exhibit different states, and thus achieve different functions.

[0105] Furthermore, such as Figures 17-18 As shown, in the valve body device 100 composed of multiple valve body units connected in parallel, one or more valve body units can be enclosed by a first limiting ring 40, meaning that the orthographic projection of one or more valve body units is located within the area defined by the first limiting ring 40. This separates the valve body units inside the first limiting ring 40 from those outside the first limiting ring 40, allowing different types and pressures of media to flow through the first through holes 122 inside and outside the first limiting ring 40. This enables the valve body device 100 to be suitable for different working environments and to perform different functions. Furthermore, a single valve body device 100 has a simple structure, small size, and can perform complex functions. Connecting multiple valve body devices 100 in series does not increase the manufacturing complexity of the combined valve assembly 200. It can also be widely combined to create combined valve assemblies 200 with different functions, without requiring complex mechanical structures, electromechanical control arithmetic units, controllers, or other complex control sensing units. This greatly reduces the manufacturing difficulty and assembly complexity of the combined valve assembly 200, and also reduces manufacturing costs.

[0106] According to some embodiments of the present invention, such as Figures 17-18 As shown, the valve body device 100 may further include: a second limiting ring 50, which is disposed in the medium channel 11 and located on the side of the second wall portion 13 opposite to the first wall portion 12. One end of the second limiting ring 50 is fixed to the second wall portion 13. 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 passage area 131 is located within the area defined by the orthographic projection of the second limiting ring 50.

[0107] The second limiting ring 50 can be disposed in the medium channel 11 and located on the side of the second wall portion 13 opposite to the first wall portion 12. 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 adhesive, or the second limiting ring 50 and the second wall portion 13 can be fixedly connected by welding. However, the present invention is not limited to these. 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 at least one second medium passing through the second through hole 132 of the region 131 lies within the area defined by the orthographic projection of the second limiting ring 50. For example, there may be one, two, three, four, or other numbers of second medium passing through the region 131 whose orthographic projections lie within the area defined by the orthographic projection of the second limiting ring 50. However, the invention is not limited to this; other numbers of second medium passing through the region 131 whose orthographic projections lie within the area defined by the orthographic projection of the second limiting ring 50 are also possible, as long as at least one second medium passing through the region 131 whose orthographic projection lies within the area defined by the orthographic projection of the second limiting ring 50. This arrangement ensures that the medium flowing within the second limiting ring 50 can flow through the corresponding second through hole 132.

[0109] Therefore, by placing the second limiting ring 50 inside the medium channel 11 and on the side of the second wall portion 13 away from the first wall portion 12, and with the orthographic projection of the second through hole 132 of the second medium passage area 131 located within the area defined by the orthographic projection of the second limiting ring 50, the medium channel 11 connected to the second through hole 132 inside the second limiting ring 50 and the second through hole 132 outside the second limiting ring 50 can be separated, so that the second through hole 132 inside the second limiting ring 50 and the second through hole 132 outside the second limiting ring 50 can connect medium channels 11 in different spaces. Thus, different types and pressures of medium can flow in the medium channel 11 inside the second limiting ring 50 and the medium channel 11 outside the second limiting ring 50, respectively. When the same type of medium with different pressures flows in the medium channel 11 inside the second limiting ring 50 and the medium channel 11 outside the second limiting ring 50, the valve body unit inside the second limiting ring 50 and the valve body unit outside the second limiting ring 50 exhibit different states, and thus achieve different functions.

[0110] Furthermore, such as Figures 17-18As shown, in a valve body device 100 composed of multiple valve body units connected in parallel, one or more valve body units can be enclosed by a second limiting ring 50. That is, the orthographic projection of one or more valve body units is located within the area defined by the second limiting ring 50, so that the valve body units inside the second limiting ring 50 are separated from the valve body units outside the second limiting ring 50. This allows different types and pressures of media to flow inside and outside the second limiting ring 50 respectively, making the valve body device 100 suitable for different working environments and achieving different functions. Furthermore, a single valve body device 100 has a simple structure, small size, and can achieve complex functions. Connecting multiple valve body devices 100 in series does not increase the manufacturing complexity of the combined valve assembly 200. It can also be widely combined to create combined valve assemblies 200 with different functions, without the need for complex mechanical structures, electromechanical control arithmetic units, controllers, or other complex control sensing units. This further reduces the manufacturing difficulty and assembly complexity of the combined valve assembly 200, and also further reduces manufacturing costs.

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

[0112] According to some embodiments of the present invention, such as 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, and the second valve body 15 defines a second medium channel 151. The first valve body 14 and the second valve body 15 are arranged and fixedly connected along the extension direction of the medium channel 11. The first medium channel 141 and the second medium channel 151 are connected to form the medium channel 11. A first wall portion 12 is fixedly disposed in the first medium channel 141, and a second wall portion 13 is fixedly disposed in the second medium channel 151.

[0113] The first valve body 14 defines a first medium channel 141, and the second valve body 15 defines a second medium channel 151. The first valve body 14 and the second valve body 15 are arranged and fixedly connected along the extension direction of the medium channel 11. The first valve body 14 and the second valve body 15 can be fixedly connected by welding or by snap-fit. However, the present invention is not limited to this. The first valve body 14 and the second valve body 15 can also be fixedly connected by other means, as long as the first valve body 14 and the second valve body 15 are arranged and fixedly connected along the extension direction of the medium channel 11.

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

[0115] The first wall portion 12 can be fixedly disposed within the first medium channel 141, and the second wall portion 13 can be fixedly disposed within 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, thereby enabling the first medium channel 141 to be connected to or disconnected from the second medium channel 151. This allows the valve body device 100 to achieve bidirectional conduction and bidirectional shut-off functions, guide the flow of medium, maintain the integrity and strength of the medium flow channel, and thus improve the reliability of the valve body device 100.

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

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

[0118] This application uses the example of the first wall portion 12 being integrally formed with the first valve body body 14 and the second wall portion 13 being integrally formed with the second valve body body 15. With this configuration, a reliable seal can be formed between the side wall of the first wall portion 12 and the first valve body body 14, and between the second wall portion 13 and the second valve body body 15, which can ensure 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 combined valve assembly 200 may include a plurality of valve body devices 100. For example, the combined valve assembly 200 may include two, three, four or other numbers of valve body devices 100. However, the present invention is not limited thereto, and the combined valve assembly 200 may also include other numbers of valve body devices 100, as long as the combined valve assembly 200 includes a plurality of valve body devices 100.

[0120] Multiple valve body devices 100 can be the valve body devices 100 described above, and multiple valve body devices 100 can be connected in series, thereby enabling the realization of functions that a single valve body device 100 cannot achieve. Furthermore, a single valve body device 100 has a simple structure and is easy to manufacture, and the combined valve assembly 200 connected in series also has significant manufacturing cost advantages.

[0121] In summary, the valve body device 100 of this application has a simple structure and can achieve bidirectional flow and bidirectional shut-off functions. Compared with similar valves in the prior art, it has a simple structure, is easy to manufacture, and offers ample design space. It achieves relatively complex functions in a small volume, and has broad engineering application prospects. Furthermore, the parallel combination valve assembly 200 in this application allows mechanical system designers more freedom in designing and selecting the valve body device 100, enabling a wide range of combinations to create products with specific flow resistance characteristics, thereby achieving product diversification of the valve body device 100.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

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

Claims

1. A valve body device, characterized in that, include: The valve body body defines a medium passage. A first wall portion and a second wall portion are both disposed within the medium channel. Along the extending direction of the medium channel, the first wall portion and the second wall portion are opposite to and spaced apart. The first wall portion has a first medium passage area, in which a first through hole is formed. The second wall portion has a second medium passage area corresponding to the first medium passage area, in which a second through hole is formed. An elastic sheet and a positioning part are provided. The positioning part is fixed between the first wall part and the second wall part. The elastic sheet is disposed between the first wall part and the second wall part and sleeved on the positioning part. Along the arrangement direction of the first wall part and the second wall part, the elastic sheet is disposed opposite to both the first medium passage area and the second medium passage area. A first limiting ring is disposed within the medium channel and 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. Along the arrangement direction of the first wall portion and the second wall portion, the orthographic projection of the first through hole in at least one first medium passage area is located within the area defined by the orthographic projection of the first limiting ring, and the orthographic projection of the first through hole in at least one first medium passage area is located outside the area defined by the orthographic projection of the first limiting ring.

2. The valve body device according to claim 1, characterized in that, The 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 the 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 passage area has a flat plate structure, the elastic sheet is attached to 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 passage 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 passage area is arc-shaped and protrudes in a direction away from the second wall portion. The elastic sheet is attached to the first wall portion and blocks the first through hole.

7. The valve body device according to claim 2, characterized in that, The positioning part includes: a first positioning post and a second positioning post. The first positioning post is fixed to the first wall portion, and the second positioning post is fixed to the second wall portion. The second positioning post has an assembly hole. The first positioning post is inserted into the assembly hole. The elastic sheet is sleeved on the first positioning post. The end of the second positioning post 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 claim 1, characterized in that, Also includes: The second limiting ring is disposed within the medium channel and 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 passage area is located within the area defined by the orthographic projection of the second limiting ring.

10. The valve body device according to claim 1, characterized in that, The positioning part is connected to the middle part of the corresponding first medium passage area and the middle part of the corresponding second medium passage area.

11. The valve body device according to any one of claims 1-8, characterized in that, The valve body body includes: A first valve body and a second valve body, the first valve body defining a first medium channel, the second valve body defining a second medium channel, the first valve body and the second valve body being arranged and fixedly connected along the extension direction of the medium channel, the first medium channel and the second medium channel communicating to form the medium channel, the first wall portion being fixedly disposed within the first medium channel, and the second wall portion being fixedly disposed within the second medium channel.

12. The valve body device according to any one of claims 11, characterized in that, The side wall of the first wall portion is fixedly connected to the first valve body body, and the side wall of the second wall portion is fixedly connected to the second valve body body.

13. A combined valve assembly, characterized in that, include: Multiple valve body devices, each of which is a valve body device according to any one of claims 1-12, and the multiple valve body devices are connected in series.

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