A multi-channel fluid control valve

Abstract

This invention proposes a multi-pass fluid control valve, belonging to the field of fluid control valves, comprising a valve body, a stationary plate, a first moving plate, and a second moving plate. The stationary plate, the first moving plate, and the second moving plate are coaxially disposed within the valve body and sequentially mirror-sealed in contact. The stationary plate has at least two first through holes. In a first state, the first and second moving plates rotate synchronously axially relative to the stationary plate, causing a change in the flow area of ​​the first through holes. In a second state, either the first or second moving plate rotates independently axially relative to the stationary plate, causing a change in the flow area of ​​the first through holes. In this invention, the two moving plates can rotate synchronously relative to the stationary plate, and the second moving plate can also rotate independently relative to both the first and stationary plates. This achieves the goal of driving two moving plates to have relatively independent rotation capabilities through a single valve shaft, thereby enabling the regulation of multiple passages within the fluid control valve.

Description

Technical Field

[0001] This utility model relates to the field of fluid control valve technology, and in particular to a multi-channel fluid control valve. Background Technology

[0002] In the field of fluid control valve technology, it is necessary to control the opening and closing of one or more delivery channels through valves. For example, in drip irrigation systems, diaphragm valves or soft-seal ball valves are commonly used for fluid control. During irrigation, to prevent the drip irrigation tape from breaking, the water pressure is very low. For diaphragm valves, it is sometimes difficult to overcome the elasticity of the return spring, resulting in situations where the valve cannot be opened. Furthermore, diaphragm valves generally use rubber and plastic seals, which are not resistant to impurities and are prone to jamming and leakage. Soft-seal ball valves generally use plastic or stainless steel balls and PTFE gaskets for sealing, which have problems such as the sealing structure being not wear-resistant, prone to aging, and easily jammed or scratched by impurities, leading to leakage.

[0003] Currently, some channel valves employ a design with fixed and moving valve plates working together. These two valve plates, through mirror-sealed contact and counter-rotation, connect different through-holes on the fixed and moving valve plates, enabling the opening and closing of each water passage and the control of the water flow rate in each passage. However, the drawback of these channel valves is that they cannot simultaneously control the opening and closing of multiple water passages and the flow rate within the valve; they can only control the opening and closing of a single passage and the flow rate. Some channel valves also use a double-moving valve plate design, with two moving valve plates driven independently by inner and outer drive shafts to achieve synchronous control of the opening and closing of multiple water passages and the flow rate. However, this design presents significant challenges in assembling and manufacturing the inner and outer drive shafts, as well as in achieving high control precision. Utility Model Content

[0004] In view of this, this utility model proposes a multi-channel fluid control valve to solve the problem that the current design, in which the inner and outer drive shafts drive two moving valve plates to rotate independently to achieve the opening and closing of multiple water conveyance channels and the synchronous control of the conveying flow, presents significant challenges in assembly and production complexity and control accuracy.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides a multi-channel fluid control valve, including a valve body, a stationary plate, a first moving plate, and a second moving plate; the stationary plate, the first moving plate, and the second moving plate are coaxially disposed in the valve body and sequentially mirror-sealed in contact, and the stationary plate has at least two first through holes; in a first state, the first moving plate and the second moving plate rotate synchronously axially relative to the stationary plate, and the flow area of ​​the first through hole changes; in a second state, the first moving plate or the second moving plate rotates independently axially relative to the stationary plate, and the flow area of ​​the first through hole changes.

[0006] Based on the above technical solutions, preferably, the first moving piece is provided with a second blind zone, and the second moving piece is provided with a third blind zone, wherein the sum of the areas of the second blind zone and the third blind zone is not less than the sum of the areas of all the first through holes.

[0007] More preferably, the area of ​​the second or third blind zone is not less than the area of ​​a first through hole.

[0008] More preferably, the first movable piece is further provided with a second through hole; or the second movable piece is further provided with a third through hole; or the first movable piece and the second movable piece are respectively provided with a second through hole and a third through hole.

[0009] More preferably, there are two first through holes, which are arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with a second through hole and a third through hole, the second through hole and the second blind zone are each set to one, which are arranged around the center of the first moving piece; the third through hole and the third blind zone are each set to one, which are arranged around the center of the second moving piece.

[0010] More preferably, there are two first through holes arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with second through holes and third through holes, there are two second through holes and one second blind zone, and the two second through holes and the second blind zone are arranged around the center of the first moving piece; there are two third through holes and one third blind zone, and the two third through holes and the third blind zone are arranged around the center of the second moving piece.

[0011] More preferably, four first through holes are provided, arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with second through holes and third through holes, two second through holes and two second blind zones are provided, arranged around the center of the first moving piece; two third through holes and two third blind zones are provided, arranged around the center of the second moving piece.

[0012] More preferably, four first through holes are provided, and the four first through holes are arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with second through holes and third through holes, one second through hole is provided and three second blind zones are provided, and the second through hole and the three second blind zones are arranged around the center of the first moving piece; one third through hole is provided and three third blind zones are provided, and the third through hole and the three third blind zones are arranged around the center of the second moving piece.

[0013] More preferably, four first through holes are provided, arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with second through holes and third through holes, one second through hole is provided and three second blind zones are provided, arranged around the center of the first moving piece; two third through holes and two third blind zones are provided, arranged around the center of the second moving piece.

[0014] More preferably, four first through holes are provided, and the four first through holes are arranged around the center of the stationary piece; when the first moving piece and the second moving piece are respectively provided with second through holes and third through holes, one second through hole is provided and three second blind zones are provided, and the second through hole and the three second blind zones are arranged around the center of the first moving piece; three third through holes are provided and one third blind zone is provided, and the three third through holes and the third blind zone are arranged around the center of the second moving piece.

[0015] Based on the above technical solutions, preferably, it also includes a linkage component; the linkage component is disposed on the edge of the first moving piece, and a trigger part is disposed on the edge of the second moving piece. When the trigger part rotates with the second moving piece and abuts against the linkage component, the second moving piece drives the first moving piece and the linkage component to rotate synchronously axially relative to the stationary piece. When the trigger part disengages from the linkage component, the second moving piece rotates axially relative to the stationary piece and the first moving piece.

[0016] More preferably, the linkage assembly includes a slide cylinder, a sliding pin, and a wedge; the slide cylinder is disposed on the edge of the first moving piece and rotates synchronously with the first moving piece; the sliding pin is inserted inside the slide cylinder, with both ends of the sliding pin extending axially along the stationary piece to the outside of the slide cylinder, and the sliding pin is initially locked relative to the stationary piece; the wedge is disposed on the end of the sliding pin near the second moving piece, and when the trigger part abuts against the wedge, the sliding pin moves axially along the stationary piece towards the second moving piece until the sliding pin is unlocked; when the trigger part disengages from the wedge, the sliding pin moves axially along the stationary piece away from the second moving piece until the sliding pin is relocked.

[0017] More preferably, it also includes grid plates, with several grid plates axially arranged on the inner wall of the valve body around the stationary plate, and several grid plates located on the side of the stationary plate away from the first moving plate; in the initial state, the end of the sliding pin near the stationary plate is inserted between two adjacent grid plates, and the first moving plate is locked; when the trigger part abuts against the wedge block, the end of the sliding pin near the stationary plate is disengaged from between two adjacent grid plates, and the first moving plate is unlocked.

[0018] More preferably, the valve body includes an upper housing and a lower housing to form a valve body, wherein the stationary plate is located at the interface where the upper housing and the lower housing meet, the first moving plate and the second moving plate are both located in the lower housing, and the grid plate is located in the upper housing.

[0019] More preferably, the valve body further includes a cavity shell disposed within the upper housing; wherein, the cavity shell is a cylinder extending axially at both ends along the stationary plate, and the end face of the cavity shell is open towards the lower housing; the stationary plate is disposed on the open surface of the cavity shell, and the stationary plate is coaxially disposed with the central axis of the cavity shell; a plurality of grid plates are axially disposed around the stationary plate between the outer peripheral wall of the cavity shell and the inner wall of the upper housing.

[0020] Based on the above technical solutions, preferably, it also includes a valve shaft, one end of which passes through the valve body and is inserted into the valve body, and the other end extends out of the valve body. Both ends of the valve shaft extend along the central axis of the stationary plate, and a second moving plate is sleeved on the insertion end of the valve shaft.

[0021] Based on the above technical solutions, preferably, the valve body has a passage and at least two flow channels inside, a stationary plate separates the passage from all the flow channels, the passage is located on one side of the stationary plate, and all the flow channels are on the other side of the stationary plate, one end of the flow channel is connected to the passage, and the other end of the flow channel passes through the inside of the valve body and is connected to the outside.

[0022] In an even more preferred embodiment, a water inlet pipe is also provided on the outer peripheral wall of the valve body. The water inlet pipe and the passage are located on the same side of the stationary plate and are connected to each other.

[0023] In an even more preferred embodiment, the valve body is also provided with a water inlet channel, which is located on the same side of the stationary plate as all the flow channels. One end of the water inlet channel is connected to the passageway, and the other end of the water inlet channel passes through the inside of the valve body and is connected to the outside.

[0024] The multi-channel fluid control valve of this invention has the following advantages over the prior art: (1) This utility model uses the linkage component to contact and disengage with the trigger part of the second moving plate, so that the two moving plates can rotate synchronously relative to the stationary plate, and the second moving plate can rotate independently relative to the first moving plate and the stationary plate, ensuring that the stability of the three valve plates will not be affected by other valve plates and will not follow the movement; at the same time, the two moving plates can be driven to rotate relatively independently by a single valve shaft, so as to achieve the purpose of independently controlling the flow ratio of any two adjacent water outlet passages of the valve body, thereby enabling the multi-passage control valve to adjust and regulate in various situations to meet the different needs of synchronous and independent control of multiple passages; in addition, the single valve shaft structure not only has low assembly and production difficulty and low production cost, but also provides better control accuracy.

[0025] (2) The present invention provides a cylindrical cavity shell in the upper shell, so that the valve body can be provided with water inlet pipe or water inlet channel as needed on the upper shell or the lower shell, and different types of passage valves can be designed, which increases the application scenarios of the present invention, improves its versatility, and allows the fixed valve plate to be sealed at the bottom of the cavity shell to avoid water leakage in the flow channel. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional exploded view of the multi-channel fluid control valve of this utility model; Figure 2 This is an axial cross-sectional view of the valve shaft of the multi-channel fluid control valve of this utility model; Figure 3 This is an exploded perspective view of the valve body of this utility model; Figure 4 This is an exploded perspective view of the linkage component and the first moving piece of this utility model; Figure 5 This is a perspective view of the stationary plate and the second movable plate of this utility model; Figure 6 This is a perspective view of the upper shell of this utility model; Figure 7 This is a three-dimensional and bottom-view schematic diagram of step one of the usage method of the multi-channel fluid control valve of this utility model. Figure 8 This is a three-dimensional and bottom view schematic diagram of step two in the method of using the multi-channel fluid control valve of this utility model. Figure 9 This is a three-dimensional and bottom view schematic diagram of step three of the method of using the multi-channel fluid control valve of this utility model; Figure 10 The figures show three perspective views of the multi-channel fluid control valve of this utility model, where a is a straight-through valve, b is a vertical three-way valve, and c is a horizontal three-way valve. Figure 11 This is a perspective view of the internal structure of the flat three-way valve of this utility model; Figure 12 This is a perspective view of another embodiment employing the principle of this utility model; Figure 13 This is a perspective view of another embodiment employing the principle of this utility model; Figure 14 This is a perspective view of another embodiment employing the principle of this utility model; Figure 15 A three-dimensional view of a valve shaft with inner and outer sleeves driving two moving plates respectively; Figure 16 This is a schematic diagram of the structure of the three-way fluid control valve of this utility model, where a is an exploded view and b is an exploded top view of the three-piece structure; Figure 17 This is a schematic diagram of the structure of the five-channel fluid control valve of this utility model, where a is an exploded three-dimensional view and b is an exploded top view of the three-piece structure; Figure 18 This is an exploded top view of the three-piece structure of the five-channel fluid control valve of this utility model, where a, b, and c represent three different implementation methods. Figure 19 This is an exploded perspective view of the three-piece structure of the multi-channel fluid control valve of this utility model, where a, b, and c represent three different implementation methods.

[0028] In the diagram: 1. Valve body; 11. Upper housing; 12. Lower housing; 13. Cavity shell; 14. Water inlet pipe; 15. Clamping block; 101. Passageway; 102. Flow channel; 103. Water inlet channel; 2. Stationary plate; 21. Limiting block; 201. First through hole; 202. First blind zone; 3. First moving plate; 301. Second through hole; 302. Second blind zone; 4. Second moving plate; 41. Trigger part; 42. Protrusion; 401. Third through hole; 402. Third blind zone; 403. Perforation; 5. Linkage assembly; 51. Slide cylinder; 52. Sliding pin; 53. Wedge block; 54. Elastic element; 6. Grid plate; 7. Valve shaft; 701. Slot. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0031] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments of this utility model 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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0035] like Figure 1 As shown, combined with Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The present invention relates to a multi-channel fluid control valve, comprising a valve body 1, a stationary plate 2, a first moving plate 3, and a second moving plate 4.

[0036] The valve body 1 is hollow inside. The valve body 1 is a metal shell structure.

[0037] The stationary plate 2, the first moving plate 3, and the second moving plate 4 are coaxially arranged inside the valve body 1 and sequentially make mirror-sealed contact, so that no water leakage will occur when the three rotate in pairs; the stationary plate 2, the first moving plate 3, and the second moving plate 4 are generally made of ceramic material, so that adjacent pairs can form mirror-sealed contact.

[0038] The stationary plate 2 has at least two first through holes 201. The number of first through holes 201 is generally adjusted according to the requirements of the water outlet branch. Typically, the number of first through holes 201 is the same as the number of water outlet passages in the fluid control valve. For example, in this embodiment, the three-way valve has two water outlet passages, so there are two first through holes 201; similarly, the five-way valve has four water outlet passages, so there are four first through holes 201. The stationary plate 2 may also have a portion without through holes, which is designated as the first blind zone 202. It should be noted that the stationary plate 2 can actually be a part of the valve body 1, or it can be integrally formed with the valve body 1. This is because the stationary plate 2 does not rotate, and the number of first through holes 201 on the stationary plate 2 is the same as the number of water outlet passages in the valve body 1. Therefore, its description here is essentially to reflect the number of water outlet passages in the fluid control valve for subsequent principle description and understanding, and does not imply that the stationary plate 2 structure is necessarily required inside the fluid control valve.

[0039] In this scheme, the cooperation of the two moving plates exists in two different states: in the first state, the first moving plate 3 and the second moving plate 4 rotate synchronously axially relative to the stationary plate 2, at which time the stationary plate 2 remains stationary; and in the second state, the first moving plate 3 or the second moving plate 4 rotates independently axially relative to the stationary plate 2, at which time the stationary plate 2 remains stationary, but only one of the two moving plates rotates independently. Ultimately, the function of the two moving plates is the same: when the moving plate rotates to a position that coincides with or partially coincides with the first through hole 201, the area of ​​the moving plate blocking the first through hole 201 is controlled by controlling the rotation angle of the moving plate, thereby adjusting the flow area (i.e., the flow area of ​​the valve passage) of one or more first through holes 201.

[0040] It should be noted that, although from the perspective of manufacturing cost and ease of operation, one of the two moving plates, the first moving plate 3 and the second moving plate 4, is fixedly connected to the valve drive shaft and driven by it to rotate, thus this moving plate can be regarded as the driving plate, while the other moving plate does not directly contact the valve drive shaft and is indirectly driven by the driving plate, thus it can be regarded as the driven plate; however, theoretically, both the first moving plate 3 and the second moving plate 4 can establish contact with the valve drive through direct or indirect contact, allowing the valve drive shaft to selectively drive one of them to rotate, or drive both to rotate simultaneously, for example... Figure 15 The inner and outer shafts are used to connect and control the rotation of the first moving plate 3 and the second moving plate 4, respectively.

[0041] exist Figure 16 and Figure 17 In one embodiment shown, the first moving plate 3 is provided with a second blind zone 302, and the second moving plate 4 is provided with a third blind zone 402. The second blind zone 302 and the third blind zone 402 are essentially valve plates used to close the through-hole. Their function is to control the opening and closing of each flow passage and the flow rate within the fluid control valve. When the first moving plate 3 and the second moving plate 4 rotate synchronously, or when the first moving plate 3 or the second moving plate 4 rotates independently, the second blind zone 302 or the third blind zone 402 may partially or completely overlap with the first through-hole 201, causing a change in the flow area of ​​the first through-hole 201 or being... Completely sealed, since the first through holes 201 correspond one-to-one with the flow passages in the valve body 1, whether the first moving plate 3 and the second moving plate 4 rotate together or the second moving plate 4 rotates alone, the purpose is to control the flow area of ​​the first through hole 201. When the first through hole 201 is completely unsealed, its flow area is the largest. As any moving plate rotates and gradually blocks the first through hole 201 through the blind zone, the flow area of ​​the first through hole 201 will naturally decrease. Until the flow area of ​​the first through hole 201 becomes zero, the first through hole 201 is completely blocked by the second blind zone 302 or the third blind zone 402.

[0042] Meanwhile, in practical operation, this embodiment requires the second blind zone 302 and the third blind zone 402 to work together to seal all the first through holes 201 on the stationary plate 2. That is, when the fluid flow inside the multi-channel fluid control valve is completely stopped, the second blind zone 302 and the third blind zone 402 need to seal all the first through holes 201. Therefore, the sum of the areas of the second blind zone 302 and the third blind zone 402 is not less than the sum of the areas of all the first through holes 201. The areas of the second blind zone 302 and the third blind zone 402 can be set according to production design requirements. For example, in Figure 16 The three-way valve shown in (a) has two outlet passages, therefore, combined with Figure 16 As shown in (b), the stationary plate 2 has two first through holes 201 with a fan-shaped radius of 180°, the first moving plate 3 has one second through hole 301 with a fan-shaped radius of 180° and one second blind area 302 with a fan-shaped radius of 180°, and the second moving plate 4 has one third through hole 401 with a fan-shaped radius of 180° and one third blind area 402 with a fan-shaped radius of 180°. The sum of the areas of the second blind area 302 and the third blind area 402 is equal to the sum of the areas of the two first through holes 201. For example, in Figure 17 The five-way valve shown in (a) has four outlet passages, therefore, combined with Figure 17 As shown in (b), the stationary plate 2 has four fan-shaped 90° first through holes 201. The design of the first moving plate 3 and the second moving plate 4 is the same as that of the stationary plate 2. Figure 16As shown in the diagram, the sum of the areas of the second blind zone 302 and the third blind zone 402 is equal to the sum of the areas of the four first through holes 201.

[0043] exist Figure 16 and Figure 17 In one embodiment shown, theoretically, as long as the sum of the areas of the second blind zone 302 and the third blind zone 402 is sufficient to cover the entire first through hole 201, complete closure of the fluid control valve can be guaranteed. Therefore, the areas of the second blind zone 302 and the third blind zone 402 can be arbitrarily adjusted. However, in practice, it has been found that if the area of ​​the second blind zone 302 or the third blind zone 402 is too small, such that it is smaller than one first through hole 201, it means that no matter what angle the first moving plate 3 or the second moving plate 4 rotates to, the moving plate with such a small blind zone area cannot completely close one first through hole 201. This means that the moving plate with such a small blind zone cannot effectively close the valve passage in practice. Therefore, the area of ​​the second blind zone 302 or the third blind zone 402 should not be less than the area of ​​one first through hole 201. Figure 16 The three-way valve shown or Figure 17 The five-way valves shown all reflect this.

[0044] exist Figure 19 In one embodiment shown, in practice, any moving piece can essentially have two implementations; one is as follows: Figure 19 As shown in (c), any movable piece can be a non-circular plate without holes. When the plate rotates to an angle that completely or partially overlaps with the first through hole 201, the flow area of ​​the first through hole 201 can be controlled; secondly, as shown in (c)... Figure 1 As shown, any movable piece is a perfectly circular plate with a hole. When the plate rotates to an angle where the hole and the first through hole 201 completely or partially overlap, the connecting area between the hole and the first through hole 201 is the flow area of ​​the first through hole 201. Therefore, when the first movable piece 3 and the second movable piece 4 work together, both movable pieces can have holes, neither can have holes, or one can have a hole and the other cannot: for example... Figure 19 As shown in (a), the stationary plate 2 has two 180° first through holes 201. At this time, the first moving plate 3 is a circular plate with a 180° second through hole 301, while the second moving plate 4 is a 180° sector plate; for example... Figure 19 As shown in (b), the stationary plate 2 has two 180° first through holes 201. The first moving plate 3 is a perfectly circular plate with a 180° second through hole 301, while the second moving plate 4 is a 180° sector plate. For example... Figure 19As shown in (c), the stationary plate 2 has two 180° first through holes 201. At this time, the second moving plate 4 is a circular plate with a 180° third through hole 401, while the first moving plate 3 is a 180° sector plate; for example... Figure 1 The more common form shown is that the first moving piece 3 and the second moving piece 4 have a second through hole 301 and a third through hole 401 respectively.

[0045] It should also be noted that, in combination Figure 18 In this embodiment, for ease of understanding, the through holes and blind areas on each moving piece are defined. For example, the blind area refers to... Figure 18 The fan-shaped shaded area outlined by the dashed line is essentially the portion of the non-opening area on the moving piece that overlaps with the first through-hole 201 on the stationary piece 2 when the moving piece rotates to completely close the first through-hole 201 on the stationary piece 2. Therefore, the moving piece can be considered to have multiple blind zones spaced apart. However, in practice, these blind zones are essentially the non-opening portions of the moving piece, and these multiple blind zones form a unified structure with the inner and outer structural frames of the moving piece. Similarly, in practice, the moving piece that is in direct contact with the mirror surface of the stationary piece 2 will have several through-holes clearly defined; however, the other moving piece that is not in contact with the stationary piece 2 may not have several openings separated by the spacer strip. Figure 18 The structure (a dotted line-like structure located in the through hole) is clearly divided, and several openings on it can form a complete hole. In this case, the area of ​​the hole is the sum of the areas of the several through holes and the area of ​​the spacer. For the moving plate implementation of a non-circular plate, the fan-shaped gaps that are not round can also be regarded as through holes without a frame structure.

[0046] Furthermore, although theoretically the number of first through-holes 201, second through-holes 301, and third through-holes 401 can be increased according to the increase in water outlet passages, the increase in water outlet passages will significantly increase the complexity of the two moving plates controlling the opening and closing of each first through-hole 201 and the flow rate. Therefore, in practice, it is usually chosen to further increase the number of moving plates, while limiting the through-holes on each moving plate to two, so as to facilitate the regulation of each passage and the regulation difficulty is relatively low. However, with an increased number of moving plates, there will be problems in how to independently control the rotation of each moving plate and control the linkage of adjacent moving plates. In this case, this embodiment only considers the case where the fluid control valve is a three-way valve and a five-way valve.

[0047] Furthermore, in practice, the first through-hole 201, the first blind zone 202, the second through-hole 301, the second blind zone 302, the third through-hole 401, and the third blind zone 402 are all designed as fan-shaped holes with the center of the stationary plate 2 as the center. Designing each through-hole as a fan-shaped hole provides the largest flow cross-sectional area compared to other shapes. Specifically, when the valve is a three-way valve, it has two outlet channels, so the fan-shaped center angle of each through-hole and blind zone can be set to 120°; when the valve is a five-way valve, it has four outlet channels, so the fan-shaped center angle of each through-hole and blind zone can be set to 72°. Additionally, depending on the number of valve channels, the fan-shaped center angle of the first through-hole 201, the second through-hole 301, and the third through-hole 401 can also be set to 60° or 90°; alternatively, if the number of valve channels remains unchanged, the fan-shaped center angle of each through-hole can also be set to 60° or 90°, but this design will sacrifice high flow performance.

[0048] Figure 16 In one embodiment shown, there are two first through holes 201, one second through hole 301 and one third through hole 401, and one second blind hole 302 and one third blind hole 402. The two first through holes 201 are arranged around the center of the stationary plate 2. The second through hole 301 and the second blind hole 302 are arranged around the center of the first moving plate 3, and the areas of the second through hole 301 and the second blind hole 302 are the same. The third through hole 401 and the third blind hole 402 are arranged around the center of the second moving plate 4, and the areas of the third through hole 401 and the third blind hole 402 are the same. At this time, the fluid control valve is a three-way valve with two water outlet passages.

[0049] Figure 1 In one embodiment shown, two first through holes 201 are provided, and the two first through holes 201 are arranged around the center of the stationary plate 2; when the first moving plate 3 and the second moving plate 4 are respectively provided with second through holes 301 and third through holes 401, the second through holes 301 are provided with two and the second blind zone 302 is provided with one, the two second through holes 301 and the second blind zone 302 are arranged around the center of the first moving plate 3, and the areas of the second through holes 301 and the second blind hole 302 are the same; the third through holes 401 are provided with two and the third blind zone 402 is provided with one, the two third through holes 401 and the third blind zone 402 are arranged around the center of the second moving plate 4, and the areas of the third through holes 401 and the third blind hole 402 are the same. At this time, the fluid control valve is a three-way valve and has two water outlet passages.

[0050] exist Figure 17In one embodiment shown, four first through holes 201 are provided, two second through holes 301 and two third through holes 401 are provided, and two second blind holes 302 and two third blind holes 402 are also provided; the four first through holes 201 are arranged around the center of the stationary plate 2; the two second through holes 301 and the two second blind holes 302 are arranged around the center of the first moving plate 3, and the areas of the second through holes 301 and the second blind holes 302 are the same; the two third through holes 401 and the two third blind holes 402 are arranged around the center of the second moving plate 4, and the areas of the third through holes 401 and the third blind holes 402 are the same. At this time, the fluid control valve is a five-way valve with four water outlet passages.

[0051] exist Figure 17 In one embodiment shown in (a), four first through holes 201 are provided, and the four first through holes 201 are arranged around the center of the stationary plate 2; when the first moving plate 3 and the second moving plate 4 are respectively provided with second through holes 301 and third through holes 401, the second through hole 301 is provided with one and the second blind zone 302 is provided with three, the second through hole 301 and the three second blind zones 302 are arranged around the center of the first moving plate 3, and the areas of the second through hole 301 and the second blind hole 302 are the same; the third through hole 401 is provided with one and the third blind zone 402 is provided with three, the third through hole 401 and the three third blind zones 402 are arranged around the center of the second moving plate 4, and the areas of the third through hole 401 and the third blind hole 402 are the same. At this time, the fluid control valve is a five-way valve and has four water outlet passages.

[0052] exist Figure 17 In one embodiment shown in (b), four first through holes 201 are provided, and the four first through holes 201 are arranged around the center of the stationary plate 2; when the first moving plate 3 and the second moving plate 4 are respectively provided with second through holes 301 and third through holes 401, the second through hole 301 is provided with one and the second blind zone 302 is provided with three, the second through hole 301 and the three second blind zones 302 are arranged around the center of the first moving plate 3, and the areas of the second through hole 301 and the second blind zone 302 are the same; the third through hole 401 and the third blind zone 402 are both provided with two, the two third through holes 401 and the two third blind zones 402 are arranged around the center of the second moving plate 4, and the areas of the third through hole 401 and the third blind hole 402 are the same. At this time, the fluid control valve is a five-way valve and has four water outlet passages.

[0053] exist Figure 17In one embodiment shown in (c), four first through holes 201 are provided, and the four first through holes 201 are arranged around the center of the stationary plate 2; when the first moving plate 3 and the second moving plate 4 are respectively provided with second through holes 301 and third through holes 401, the second through hole 301 is provided with one and the second blind zone 302 is provided with three, the second through hole 301 and the three second blind zones 302 are arranged around the center of the first moving plate 3, and the areas of the second through hole 301 and the second blind zone 302 are the same; the third through hole 401 is provided with three and the third blind zone 402 is provided with one, the three third through holes 401 and the third blind zone 402 are arranged around the center of the second moving plate 4, and the areas of the third through hole 401 and the third blind zone 402 are the same. At this time, the fluid control valve is a five-way valve and has four water outlet passages.

[0054] In summary, the above provides two different practical solutions for three-way valves and four different practical solutions for five-way valves.

[0055] exist Figure 1 In one embodiment shown, a linkage component 5 is also included. The linkage component 5 is disposed in the passage 101 and disposed at the edge of the first moving piece 3. A trigger part 41 is disposed at the edge of the second moving piece 4. When the trigger part 41 rotates with the second moving piece 4 and contacts the linkage component 5, the second moving piece 4 drives the first moving piece 3 and the linkage component 5 to rotate axially relative to the stationary piece 2. When the trigger part 41 moves away from the linkage component 5, the second moving piece 4 rotates axially relative to the stationary piece 2 and the first moving piece 3. Therefore, when the trigger part 41 contacts the linkage component 5, the second moving plate 4 can drive the first moving plate 3 to rotate synchronously. At this time, the relative position of the second moving plate 4 and the first moving plate 3 is fixed, while the two are rotatable relative to the stationary plate 2. The principle of this solution is essentially that the linkage component 5 and the trigger part 41 of the second moving plate make contact and disengagement possible, so that the two moving plates can rotate synchronously relative to the stationary plate 2, and the second moving plate 4 can also rotate independently relative to the first moving plate 3 and the stationary plate 2. This achieves the purpose of driving the two moving plates to have relatively independent rotation capabilities through a single valve shaft 7, thereby enabling the multi-passage control and adjustment of the fluid control valve under various conditions.

[0056] The essential mechanism of this solution is that when the trigger part 41 contacts the linkage component 5, it can cause the second moving piece 4 to drive the first moving piece to rotate together. Therefore, the linkage component 5 can be regarded as an integral structure linked with the trigger part 41. Based on this, besides the design in this embodiment where the linkage component 5 is located on the first moving piece 3 and the trigger part 41 is located on the second moving piece 4, several other designs exist: 1) For example, the positions of the linkage component 5 and the trigger part 41 can be interchanged. For example... Figure 12As shown, the valve shaft 7 is fixed to the first moving plate 3 via a flat key or spline and is rotatably connected to the second moving plate 4. In this design, the trigger part 41 is located on the first moving plate 3, while the linkage component 5 is located on the second moving plate 4.

[0057] 2) For example, the linkage component 5 and the trigger part 41 may not be located at the edges of the two moving pieces, but rather within their through holes. For example... Figure 13 As shown, the valve shaft 7 is fixed to the second moving plate 4 via a flat key or spline and rotatably connected to the first moving plate 3. In this design, the linkage component 53 is a vertical pin disposed on the inner wall of one of the first through holes 301 of the first moving plate 3. The vertical pin extends downward and inserts into one of the second through holes 401 of the second moving plate 4. At this time, the two sides of the inner wall of the second through hole 401 become the trigger part 41. When the second moving plate 4 rotates, either side of the inner wall of the second through hole 401 contacts the vertical pin-shaped linkage component 5, which can drive the first moving plate 3 to rotate. When the second moving plate 4 rotates and the linkage component 5 moves between the two sides of the inner wall of the second through hole 401, the second moving plate 4 rotates independently while the first moving plate 3 remains stationary. In this design, the positions of the linkage component 5 and the trigger part 41 can also be interchanged.

[0058] 3) For example, the positions of the linkage component 5 and the trigger part 41 can be respectively set on the center holes of the valve shaft 7 and the second moving plate 4. For example... Figure 14 As shown, the valve shaft 7 is fixedly connected to the first moving plate 3 via a flat key or spline and rotatably connected to the second moving plate 4. In this design, the linkage assembly 5 has an arc groove on the outer peripheral wall of the valve shaft 7, and the trigger part 41 is located on the inner wall of the center hole of the second moving plate 4. The trigger part 41 has a relatively large width, while the arc groove has a relatively large curvature, allowing the trigger part 41 to slide along the arc groove. When the valve shaft 7 drives the first moving plate 3 to rotate, if the two ends of the arc groove do not contact the trigger part 41, the first moving plate 3 rotates independently while the second moving plate 4 remains stationary. However, if the first moving plate 3 rotates to a certain angle, the end of the arc groove will contact the trigger part 41, thereby driving the second moving plate 4 to rotate together. In this design, the positions of the linkage assembly 5 and the trigger part 41 can also be interchanged; or the valve shaft 7 is fixedly connected to the second moving plate 4, and the trigger part 41 is located on the center hole of the first moving plate 3.

[0059] In addition, such as Figure 15 As shown, valve shaft 7 can also be used as an inner and outer shaft, where the outer shaft 71 is fixed to the first moving plate 3 by a flat key or spline, and the inner shaft 72 is fixed to the second moving plate 4 by a flat key or spline; the outer shaft 71 and the inner shaft 72 can rotate relative to each other, and both are driven and controlled by the same actuator, which rotates in both directions to rotate the inner and outer shafts respectively. Therefore, in this design, there is no need to set up a trigger part 41 and a linkage assembly 5.

[0060] exist Figure 4 and Figure 6In one embodiment shown, the linkage component 5 includes a slide cylinder 51, a sliding pin 52, and a wedge block 53.

[0061] The slide 51 is located at the edge of the first moving plate 3 and rotates synchronously with the first moving plate 3.

[0062] The sliding pin 52 is inserted inside the slide cylinder 51, and both ends of the sliding pin 52 extend axially along the stationary plate 2 to the outside of the slide cylinder 51. In the initial state, the sliding pin 52 is locked relative to the stationary plate 2. The locking of the sliding pin 52 means that the relative position of the linkage component 5 and the stationary plate 2 remains fixed. Therefore, at this time, the first moving plate 3 is in a locked state relative to the stationary plate 2.

[0063] The wedge 53 is disposed on the end of the sliding pin 52 near the second movable piece 4. When the trigger part 41 abuts against the wedge 53, as the second movable piece 4 continues to rotate, the sliding pin 52 will move along the axis of the stationary piece 2 towards the second movable piece 4 until the sliding pin 52 moves to the unlocked position, thereby causing the first movable piece 3 to disengage from the locked state. Since the trigger part 41 abuts against the wedge 53 and the first movable piece 3 is unlocked at this time, when the second movable piece 5 rotates, it will apply a pushing force to the wedge 53 through the trigger part 4, causing the wedge 53 to be pushed to rotate together, thus enabling the second movable piece 5 to drive the first movable piece 3 to rotate synchronously.

[0064] When the trigger part 41 disengages from the wedge block 53, the sliding pin 52 moves to reset, that is, the sliding pin 52 moves away from the second moving piece 4 along the axis of the stationary piece 2 until the sliding pin 52 is locked again. At this time, the first moving piece 3 is locked again, which means that the second moving piece 4 can only rotate independently.

[0065] exist Figure 4 In one embodiment shown, the linkage component 5 further includes an elastic element 54. The elastic element 54 is sleeved on the portion of the sliding pin 52 located inside the slide cylinder 51. The two ends of the elastic element 54 are connected to the outer peripheral wall of the sliding pin 52 and the inner wall of the end face of the slide cylinder 51. When the elastic element 54 is relaxed, the sliding pin 52 is in a locked state. When the second moving piece 4 rotates to the position where the trigger part 41 abuts against the wedge block 53, the action of the trigger part 41 abutting against the wedge block 53 will cause the sliding pin 52 to move towards the second moving piece 4 and compress the elastic element 54. At this time, the first moving piece 3 becomes movable. As the second moving piece 4 continues to rotate and pushes the linkage component 5, the first moving piece 3 also rotates synchronously with the second moving piece 4. When the trigger part 41 disengages from the wedge block 53, the elastic element 54 rebounds and resets, and at the same time, the sliding pin 52 is moved and reset by pushing the limiting member 55.

[0066] exist Figure 4In one embodiment shown, the linkage component 5 further includes a limiting member 55; the limiting member 55 is disposed on the end of the sliding pin 52 near the stationary piece 2 and located inside the slide cylinder 51, and the limiting member 55 moves with the sliding pin 52 within the slide cylinder 51; the elastic member 54 is connected at both ends to the limiting member 55 and the inner wall of the end face of the slide cylinder 51. The limiting member 55 is plate-shaped, and its function is to block the end of the elastic member 54 near the stationary piece 2 to compress and limit the extension and retraction of the elastic member 54.

[0067] exist Figure 4 In one embodiment shown, the wedge 53 is a triangular or trapezoidal block, and the trigger part 41 is a long strip extending horizontally along arcs at both ends. The end face of the trigger part 41 contacts the side of the wedge 53, and the end face of the trigger part 41 is a slope. The wedge 53 and the trigger part 41 form a wedge-shaped fit, so that when the end face of the trigger part 41 contacts the side slope of the wedge 53 and continues to move forward, the wedge 53 will move downward under the guidance of the slope.

[0068] exist Figure 4 In one embodiment shown, the slide cylinder 51 is detachably connected to the first movable piece 3. Two protruding bosses can be provided on the edge of the first movable piece 3, and platform covers can be provided on both sides of the slide cylinder 51. After the bosses are inserted into the platform covers, the slide cylinder 51 is installed and fixed to the first movable piece 3 by fastening bolts.

[0069] exist Figure 4 and Figure 6 In one embodiment shown, a grid plate 6 is also included. A plurality of grid plates 6 are axially arranged around the stationary plate 2 on the inner wall of the valve body 1. The plurality of grid plates 6 are located on the side of the stationary plate 2 away from the first moving plate 3. In the initial state, the end of the sliding pin 52 near the stationary plate 2 is inserted between two adjacent grid plates 6, and the first moving plate 3 is locked. When the trigger part 41 abuts against the wedge block 53, the end of the sliding pin 52 near the stationary plate 2 is withdrawn from between two adjacent grid plates 6, and the first moving plate 3 is unlocked. When the sliding pin 52 is engaged between two adjacent grid plates 6, the first movable piece 3 is locked and cannot rotate. At this time, as long as the trigger part 41 does not contact the wedge block 53, the second movable piece 4 can rotate independently to adjust the rotation angle of the third through hole 401, thereby controlling the communication relationship between the third through hole 401 and other through holes. When the sliding pin 52 is disengaged from between the two adjacent grid plates 6, the first movable piece 3 is unlocked. At this time, the trigger part 41 abuts against the wedge block 53, and the second movable piece 4 will push the first movable piece 3 to rotate synchronously through the linkage component 5. Thus, with the relative positional relationship between the second through hole 301 and the third through hole 401 fixed, the communication relationship between the second through hole 301 and the third through hole 401 and the first through hole 201 is controlled. Through the above design, the opening and closing and flow of each passage can be freely adjusted.

[0070] exist Figure 3In one embodiment shown, the valve body 1 includes an upper housing 11 and a lower housing 12, which together form the valve body 1. The valve body 1 can be assembled via flanges, facilitating the disassembly and assembly of the valve body 1 for maintenance of the stationary valve plate 3 and the moving valve plate 4. The stationary plate 2 is located at the interface where the upper housing 11 and lower housing 12 meet. The first moving plate 3 and the second moving plate 4 are both located within the lower housing 12. The grid plate 6 is located within the upper housing 11. The passageway 101 is located within the lower housing 12, and all flow channels 102 are located within the upper housing 11.

[0071] exist Figure 6 In one embodiment shown, the valve body 1 further includes a cavity shell 13. The cavity shell 13 is disposed within the upper housing 11; the cavity shell 13 is cylindrical with both ends extending axially along the stationary plate 2, and the end face of the cavity shell 13 facing the lower housing 12 is open and connected to the passageway 101. All flow channels 102 are disposed within the cavity shell 13. The cavity shell 13 divides the internal structure of the valve body 1 into two regions, an inner and an outer region. The interior of the cavity shell 13 is the region where each flow channel 102 is located, while the internal region of the valve body 1 outside the cavity shell 13 can be connected to the passageway 102 within the lower housing 1. Therefore, the valve body 1 can adjust the position of the inlet according to design requirements, so that the inlet can be located on the lower housing 12 or on the upper housing 11. The stationary plate 2 is coaxially arranged with the central axis of the cavity shell 13. Several sets of clamping blocks 15 are arranged on the outer edge of the end face of the cavity shell 13 facing the lower housing 12. Several limiting blocks 21 are arranged on the outer edge of the stationary plate 2, each limiting block 21 clamping within its respective set of clamping blocks 15, locking the stationary plate 2 onto the cavity shell 13 and preventing the stationary valve plate 3 from rotating with the moving valve plate 4. Several grid plates 6 are axially arranged around the stationary plate 2 between the outer peripheral wall of the cavity shell 13 and the inner wall of the valve body 1. The grid plates 6 enhance the structural strength of the valve body 1. Figure 10 In this embodiment, the straight-through valve referred to in (a) is used. At this time, the two flow channels 102 are one inlet and one outlet. The water flows into the cavity shell 13 from one flow channel 102, then flows into the flow channel 101, then returns to the cavity shell 13 and is output from the other flow channel 102 to form a straight-through passage.

[0072] exist Figure 2In one embodiment shown, a valve shaft 7 is also included. A cylindrical structure is inserted through the center of the valve body 1, and the valve shaft 7 is inserted inside the cylindrical structure. One end of the valve shaft 7 passes through the valve body 1 and is inserted into the valve body 1, while the other end extends outside the valve body 1. Both ends of the valve shaft 7 extend along the central axis of the stationary plate 2. A second moving plate 4 is sleeved on the inserted end of the valve shaft 7. The valve shaft 7 may only have the second moving plate 4 sleeved on it, or it may have both the first moving plate 3 and the stationary plate 2 sleeved on it. The first moving plate 3 and the stationary plate 2 are rotatably connected to the valve shaft 7. The difference in the sleeved components on the valve shaft 7 mainly comes from the insertion direction of the valve shaft 7. For example, when the valve shaft 7 is inserted from the lower housing 12, it does not need to be inserted into the cavity housing 13, so only the second moving plate 4 can be sleeved on the valve shaft 7; however, if the valve shaft 7 is inserted from the upper housing 11, it will pass through the valve shaft 7, and thus pass through the stationary plate 2 and the first moving plate 3. The second moving plate 4 has a through hole 403 at its center, and a protrusion 42 is provided inside the through hole 403. The end of the valve shaft 7 is inserted into the through hole 403. A groove 701 is provided on the outer peripheral wall of the valve shaft 7. The protrusion 42 is fixedly installed in the groove 701 and causes the valve shaft 7 to drive the first moving plate 3 to rotate axially, preventing the stationary plate 2 from rotating with the second moving plate 4, and at the same time, it will not hinder the normal rotation of the second moving plate 4.

[0073] exist Figure 1 and Figure 2In one embodiment shown, the valve body 1 has a passageway 101 and at least two flow channels 102 inside. The passageway 101 is located on one side of the stationary plate 2, and all flow channels 102 are located on the other side of the stationary plate 2. One end of each flow channel 102 is connected to the passageway 101, and the other end of each flow channel 102 passes through the interior of the valve body 1 and connects to the outside. The number of flow channels 102 is consistent with the number of valve outlet passages. For example, a five-way valve has four flow channels 102, and a three-way valve has two flow channels 102. The passageway 101 serves as a transition area between each outlet passage and inlet passage to facilitate the opening and closing of the passages and the regulation of the flow rate. This embodiment aims to control the opening and closing of each passage and the flow rate by using the different rotation states of the two moving plates. For example, in the first state, when the first moving piece 3 rotates synchronously with the second moving piece 4, the communication area between the second through hole 301 and the first through hole 201 changes. Since the first moving piece 3 and the second moving piece 4 are relatively fixed at this time, the relative position and communication status of the second through hole 301 and the third through hole 401 on them remain unchanged. If the second through hole 301 and the third through hole 401 are already in a connected state at this time, then with the rotation of the second moving piece 4, the first through hole 201 may be connected to the second through hole 301 and the third through hole 401, thereby connecting the corresponding flow channel 102 with the passage 101. However, the first through hole 201 may also be blocked by the second blind zone 302 or the third blind zone 402, causing the flow channel 102 to disconnect from the passage 101. For example, in the second state, when the second moving plate 4 rotates independently, the communication area between the third through hole 401 and the second through hole 301 changes. Since the first moving plate 3 and the stationary plate 2 are relatively fixed at this time, the relative positions and communication between the first through hole 201 and the second through hole 301 on them remain unchanged. If the first through hole 201 and the second through hole 301 are already connected at this time, the third through hole 401 may connect with the second through hole 301 and the first through hole 201, thereby connecting the corresponding flow channel 102 with the passageway 101. However, the second through hole 301 and the first through hole 201 may also be blocked by the third blind zone 402, causing the flow channel 102 to disconnect from the passageway 101. Based on the above principle, even more types of flow path opening and closing conditions can be controlled.

[0074] exist Figure 3 In one embodiment shown, a water inlet pipe 14 is also provided on the outer peripheral wall of the valve body 1. The water inlet pipe 14 and the passage 101 are located on the same side of the stationary plate 2, and the water inlet pipe 14 is connected to the passage 101. (Combined with...) Figure 10 In this embodiment, the vertical three-way valve referred to in (b) has an inlet pipe 14 vertically connected to the bottom of the lower housing 12. Water is supplied from the inlet pipe 14 into the valve body 1. The water first enters the passage 101 and then exits from the two flow channels 102 to form two branches. This design forms a vertical T-shape with the inlet pipe 14, which is suitable for environments where there is a height difference between the inlet and outlet water.

[0075] exist Figure 11 In one embodiment shown, a water inlet channel 103 is also provided inside the valve body 1. The water inlet channel 103 and all the flow channels 102 are located on the same side of the stationary plate 2. One end of the water inlet channel 103 is connected to the passage 101, and the other end of the water inlet channel 103 passes through the interior of the valve body 1 and is connected to the outside. Figure 10 In this embodiment, the flat three-way valve referred to in (c) is used. Water flows into the upper housing 11 from the inlet channel 103, then into the passage 101 of the lower housing 12, and finally exits from the two flow channels 102 to form two branches. In this design, the two flow channels 102 are at the same horizontal level as the inlet channel 103, which is suitable for environments where there is no height difference between the inlet and outlet water, or environments where the height requirement for installation space is small.

[0076] like Figure 1 As shown, combined with Figure 4 The present invention discloses a method for using a multi-channel fluid control valve, which employs the aforementioned multi-channel fluid control valve and includes the following steps: Step 1: In the initial state, the end of the sliding pin 52 near the stationary plate 2 is inserted between two adjacent grid plates 6, and the first moving plate 3 is locked inside the valve body 1.

[0077] Step 2: The second moving plate 4 rotates. When the trigger part 41 abuts against the wedge block 53, the wedge block 53 moves along the axis of the stationary plate 2 toward the direction closer to the second moving plate 4 and drives the sliding pin 52 to move synchronously until the sliding pin 52 exits between the two adjacent grid plates 6 near the end of the stationary plate 2.

[0078] Step 3: The first moving plate 3 is unlocked inside the valve body 1, and the second moving plate 4 drives the first moving plate 3 and the linkage component 5 to rotate synchronously relative to the stationary plate 2.

[0079] Step four, the second moving plate 4 rotates in the opposite direction. When the trigger part 41 disengages from the wedge block 53, the wedge block 53 moves along the axis of the stationary plate 2 toward the stationary plate 2 and drives the sliding pin 52 to move synchronously until the end of the sliding pin 52 near the stationary plate 2 is reinserted between the two adjacent grid plates 6.

[0080] Step 5: The first moving plate 3 is relocked inside the valve body 1, and the second moving plate 4 rotates independently relative to the first moving plate 3 and the stationary plate 2.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-channel fluid control valve, characterized in that: It includes a valve body (1), a stationary plate (2), a first moving plate (3) and a second moving plate (4); The stationary plate (2), the first moving plate (3) and the second moving plate (4) are coaxially arranged in the valve body (1) and sequentially mirror-sealed in contact. The stationary plate (2) has at least two first through holes (201). In the first state, the second moving piece (4) and the first moving piece (3) rotate axially synchronously relative to the stationary piece (2), causing the flow area of ​​the first through hole (201) to change; In the second state, the first moving piece (3) or the second moving piece (4) rotates independently axially relative to the stationary piece (2), causing the flow area of ​​the first through hole (201) to change.

2. The multi-channel fluid control valve according to claim 1, characterized in that: The first movable piece (3) is provided with a second blind zone (302), and the second movable piece (4) is provided with a third blind zone (402). The sum of the areas of the second blind zone (302) and the third blind zone (402) is not less than the sum of the areas of all the first through holes (201).

3. A multi-channel fluid control valve according to claim 2, characterized in that: The area of ​​the second blind zone (302) or the third blind zone (402) is not less than the area of ​​a first through hole (201).

4. A multi-pass fluid control valve according to claim 2, wherein: The first movable piece (3) is further provided with a second through hole (301); or the second movable piece (4) is further provided with a third through hole (401); or the first movable piece (3) and the second movable piece (4) are respectively provided with a second through hole (301) and a third through hole (401).

5. A multi-pass fluid control valve according to claim 4, wherein: The first through hole (201) is set to two, and the two first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) and the second blind zone (302) are each set to one, and the second through hole (301) and the second blind zone (302) are arranged around the center of the first moving piece (3); The third through hole (401) and the third blind zone (402) are both set to one, and the third through hole (401) and the third blind zone (402) are arranged around the center of the second moving piece (4).

6. A multi-pass fluid control valve according to claim 4, wherein: The first through hole (201) is set to two, and the two first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) is set to two and the second blind zone (302) is set to one. The two second through holes (301) and the second blind zone (302) are arranged around the center of the first moving piece (3); The third through hole (401) is set to two and the third blind zone (402) is set to one. The two third through holes (401) and the third blind zone (402) are arranged around the center of the second moving piece (4).

7. A multi-pass fluid control valve according to claim 4, wherein: The first through hole (201) is set to four, and the four first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) and the second blind zone (302) are both set to two, and the two second through holes (301) and the two second blind zones (302) are arranged around the center of the first moving piece (3); The third through hole (401) and the third blind zone (402) are both set to two, and the two third through holes (401) and the two third blind zones (402) are arranged around the center of the second moving piece (4).

8. A multi-pass fluid control valve according to claim 4, wherein: The first through hole (201) is set to four, and the four first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) is set to one and the second blind zone (302) is set to three. The second through hole (301) and the three second blind zones (302) are arranged around the center of the first moving piece (3). The third through hole (401) is set to one and the third blind zone (402) is set to three. The third through hole (401) and the three third blind zones (402) are arranged around the center of the second moving piece (4).

9. A multi-channel fluid control valve according to claim 4, characterized in that: The first through hole (201) is set to four, and the four first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) is set to one and the second blind zone (302) is set to three. The second through hole (301) and the three second blind zones (302) are arranged around the center of the first moving piece (3). The third through hole (401) and the third blind zone (402) are both set to two, and the two third through holes (401) and the two third blind zones (402) are arranged around the center of the second moving piece (4).

10. A multi-pass fluid control valve according to claim 4, wherein: The first through hole (201) is set to four, and the four first through holes (201) are arranged around the center of the stationary piece (2); When the first moving piece (3) and the second moving piece (4) are respectively provided with a second through hole (301) and a third through hole (401), the second through hole (301) is set to one and the second blind zone (302) is set to three. The second through hole (301) and the three second blind zones (302) are arranged around the center of the first moving piece (3). The third through hole (401) is set to three and the third blind zone (402) is set to one. The three third through holes (401) and the third blind zone (402) are arranged around the center of the second moving piece (4).

11. A multi-pass fluid control valve according to any one of claims 1 to 10, wherein: It also includes a linkage component (5), which is disposed on the edge of the first moving piece (3), and a trigger part (41) is disposed on the edge of the second moving piece (4). When the trigger part (41) rotates with the second moving piece (4) and abuts against the linkage component (5), the second moving piece (4) drives the first moving piece (3) and the linkage component (5) to rotate synchronously axially relative to the stationary piece (2). When the trigger part (41) disengages from the linkage component (5), the second moving piece (4) rotates axially relative to the stationary piece (2) and the first moving piece (3).

12. A multi-pass fluid control valve according to claim 11, wherein: The linkage component (5) includes a slide cylinder (51), a sliding pin (52), and a wedge (53); The slide (51) is located at the edge of the first moving plate (3) and rotates synchronously with the first moving plate (3); The sliding pin (52) is inserted inside the slide cylinder (51), and both ends of the sliding pin (52) extend axially along the stationary piece (2) to the outside of the slide cylinder (51). The sliding pin (52) is initially locked relative to the stationary piece (2). The wedge (53) is disposed on the end of the sliding pin (52) near the second moving piece (4). When the trigger part (41) abuts against the wedge (53), the sliding pin (52) moves along the axial direction of the stationary piece (2) towards the second moving piece (4) until the sliding pin (52) is unlocked. When the trigger part (41) disengages from the wedge (53), the sliding pin (52) moves away from the second moving piece (4) along the axis of the stationary piece (2) until the sliding pin (52) is relocked.

13. A multi-pass fluid control valve according to claim 12, wherein: It also includes grid plates (6), a plurality of grid plates (6) are axially arranged around the stationary plate (2) on the inner wall of the valve body (1), and the plurality of grid plates (6) are located on the side of the stationary plate (2) away from the first moving plate (3); in the initial state, the end of the sliding pin (52) near the stationary plate (2) is inserted between two adjacent grid plates (6), and the first moving plate (3) is locked; when the trigger part (41) abuts against the wedge block (53), the end of the sliding pin (52) near the stationary plate (2) exits between two adjacent grid plates (6), and the first moving plate (3) is unlocked.

14. A multi-pass fluid control valve according to claim 13, wherein: The valve body (1) includes, The upper housing (11) and the lower housing (12) together form the valve body (1). The stationary plate (2) is located at the interface between the upper shell (11) and the lower shell (12), the first moving plate (3) and the second moving plate (4) are both located inside the lower shell (12), and the grid plate (6) is located inside the upper shell (11).

15. A multi-pass fluid control valve according to claim 14, wherein: The valve body (1) also includes, Cavity shell (13) is disposed inside the upper shell (11); The cavity shell (13) is a cylinder extending axially along the stationary plate (2) at both ends, and the end face of the cavity shell (13) is open towards the lower shell (12). The stationary plate (2) is covered on the open surface of the cavity shell (13), and the stationary plate (2) is coaxial with the central axis of the cavity shell (13); Several of the grid plates (6) are axially arranged around the stationary plate (2) between the outer peripheral wall of the cavity shell (13) and the inner wall of the upper shell (11).

16. A multi-pass fluid control valve according to any one of claims 1 to 10, 12 to 15, wherein: It also includes a valve shaft (7), one end of which passes through the valve body (1) and is inserted into the valve body (1), and the other end extends to the outside of the valve body (1). Both ends of the valve shaft (7) extend along the central axis of the stationary plate (2), and a second moving plate (4) is sleeved on the insertion end of the valve shaft (7).

17. A multi-pass fluid control valve according to any one of claims 1 to 10, 12 to 15, wherein: The valve body (1) has a passage (101) and at least two flow channels (102) inside. The stationary plate (2) separates the passage (101) from all the flow channels (102). The passage (101) is located on one side of the stationary plate (2), and all the flow channels (102) are on the other side of the stationary plate (2). One end of the flow channel (102) is connected to the passage (101), and the other end of the flow channel (102) passes through the inside of the valve body (1) and is connected to the outside.

18. A multi-pass fluid control valve according to claim 17, wherein: The valve body (1) is also provided with an inlet pipe (14) on its outer peripheral wall. The inlet pipe (14) and the passage (101) are located on the same side of the stationary plate (2). The inlet pipe (14) and the passage (101) are connected.

19. A multi-pass fluid control valve according to claim 17, wherein: The valve body (1) is also provided with an inlet channel (103). The inlet channel (103) and all the flow channels (102) are located on the same side of the stationary plate (2). One end of the inlet channel (103) is connected to the passage (101), and the other end of the inlet channel (103) passes through the inside of the valve body (1) and is connected to the outside.

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