Connection structure for triple valve and assembly method thereof

Abstract

The present invention belongs to the technical field of engineering components, and in particular to a connection structure for a triple valve and an assembly method thereof; the present invention provides a connection structure for a triple valve, including: a connecting piece, which is annular and suitable for connecting a connecting pipe of the side walls of two adjacent valve bodies; a fixing buckle, two fixing buckles are arranged opposite to each other and sleeved on the outer wall of the connecting piece; a positioning block, a plurality of positioning blocks are evenly distributed on the outer wall of the connecting pipe; wherein, when the connecting pipe abuts against the connecting piece, each positioning block is located at a groove on the side wall of the connecting piece; the valve body is rotated so that the positioning block is inserted into the connecting piece, so that the two adjacent valve bodies are in the same plane. Through the cooperation of the connecting piece and the positioning block, it is not only convenient to adjust the level between the two valve bodies, but also the air tightness between the two connecting pipes can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering components, and specifically relates to valves, and in particular to a connection structure for a triple valve and an assembly method thereof. Background Art

[0002] A triple valve refers to three independent valve bodies connected in series through a connecting structure.

[0003] When installing the triple valve, a connecting structure is set between two adjacent valve bodies to connect the adjacent valve bodies, and it is necessary to ensure that the three valve bodies remain in the same horizontal plane.

[0004] The traditional connection structure requires a high level of operator proficiency and requires constant adjustment of the angles of the adjacent valve bodies on the left and right to keep the valve bodies on the same horizontal plane while ensuring the airtightness of the connection between the valve bodies. Therefore, the traditional connection structure requires more time to adjust and there is also a risk of leakage.

[0005] Therefore, how to avoid the time-consuming and labor-intensive installation of the connection structure is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The embodiments of the present disclosure at least provide a connection structure for a triple valve and an assembly method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a connection structure for a triple valve, comprising:

[0009] A connecting piece, which is annular and suitable for connecting the connecting pipes of the side walls of two adjacent valve bodies;

[0010] Fixed buckles, two fixed buckles are arranged opposite to each other and sleeved on the outer wall of the connecting piece;

[0011] Positioning blocks, a plurality of positioning blocks are evenly distributed on the outer wall of the connecting pipe;

[0012] Wherein, when the connecting pipe abuts against the connecting piece, each positioning block is located at the groove of the side wall of the connecting piece;

[0013] Rotate the valve body so that the positioning block is inserted into the connecting piece, so that the two adjacent valve bodies are in the same plane.

[0014] In an optional embodiment, the connecting member includes: a positioning plate having a through hole formed therein;

[0015] A double-layer sealing ring, wherein the two double-layer sealing rings are respectively arranged on the left and right sides of the positioning plate;

[0016] Limiting members, each two of which are symmetrically arranged on the left and right sides of the positioning plate, and a plurality of limiting members located on the same side of the positioning plate are evenly distributed on the edge of the positioning plate;

[0017] The groove is arranged between two adjacent limiting members;

[0018] Wherein, when the connecting pipe abuts against the positioning plate, the positioning block is located between the two limiting members;

[0019] The connecting pipe is rotated in the circumferential direction, the limiting member squeezes the positioning block to move toward the axial direction of the connecting pipe, and the positioning block squeezes the double-layer sealing ring to deform it inward.

[0020] In an optional embodiment, the positioning block is arranged along the radial direction of the connecting pipe and passes through the connecting pipe;

[0021] A pair of connecting pipes is provided inside the connecting pipe, and a gap is provided between the outer wall of the connecting pipe and the inner wall of the connecting pipe;

[0022] The butt-joint pipe is adapted to the double-layer sealing ring;

[0023] Wherein, when the connecting pipe abuts against the positioning plate, the butt-jointed pipe is inserted between the double-layer sealing rings;

[0024] The connecting pipe is rotated circumferentially, and the limiting member is suitable for gradually squeezing the positioning block so that the positioning block moves toward the axial center direction of the connecting pipe.

[0025] In an optional embodiment, the distance from one end of the outer wall of the positioning block to the axis of the connecting pipe gradually increases toward the other end;

[0026] When the positioning block contacts the inner wall of the limiting member, the limiting member gradually squeezes the positioning block to move inward.

[0027] In an optional embodiment, a positioning groove matched with the positioning block is formed on the inner wall of the limiting member, and the positioning block is suitable for sliding in the positioning groove.

[0028] In an optional embodiment, the inner wall of the fixing buckle is provided with a protrusion adapted to the limiting member;

[0029] Wherein, when the fixing buckle sleeve is arranged on the outer wall of the positioning plate, the protrusion is suitable for squeezing the limiting member so that the outer edge of the limiting member is deformed toward the axial direction.

[0030] In a second aspect, the present disclosure also provides a triple valve, including:

[0031] The valve body has at least one connecting pipe disposed on its side wall, and a plurality of positioning blocks are evenly and slidably disposed on the outer wall of the connecting pipe;

[0032] A connecting piece, which is located between two adjacent connecting pipes and includes a plurality of limiting pieces, wherein the distance between two adjacent limiting pieces is greater than the width of the positioning block;

[0033] After the connecting pipe is in contact with the connecting piece, the valve body is rotated so that each positioning block is inserted into the limiting piece, so that two adjacent valve bodies are in the same plane.

[0034] In an optional embodiment, the connecting member includes: a positioning plate having a through hole formed therein;

[0035] A double-layer sealing ring, wherein the two double-layer sealing rings are respectively arranged on the left and right sides of the positioning plate;

[0036] Every two of the limiting members are symmetrically arranged on the left and right sides of the positioning plate, and the limiting members located on the same side of the positioning plate are evenly distributed on the edge of the positioning plate;

[0037] Wherein, when the connecting pipe abuts against the positioning plate, the positioning block is located between the two limiting members;

[0038] The connecting pipe is rotated in the circumferential direction, the limiting member squeezes the positioning block to move toward the axial direction of the connecting pipe, and the positioning block squeezes the double-layer sealing ring to deform it inward.

[0039] In an optional embodiment, the positioning block is arranged along the radial direction of the connecting pipe and passes through the connecting pipe;

[0040] A pair of connecting pipes is provided inside the connecting pipe, and a gap is provided between the outer wall of the connecting pipe and the inner wall of the connecting pipe;

[0041] The butt-joint pipe is adapted to the double-layer sealing ring;

[0042] Wherein, when the connecting pipe abuts against the positioning plate, the butt-jointed pipe is inserted between the double-layer sealing rings;

[0043] The connecting pipe is rotated circumferentially, and the limiting member is suitable for gradually squeezing the positioning block so that the positioning block moves toward the axial center direction of the connecting pipe.

[0044] In an optional embodiment, the distance from one end of the outer wall of the positioning block to the axis of the connecting pipe gradually increases toward the other end;

[0045] When the positioning block contacts the inner wall of the limiting member, the limiting member gradually squeezes the positioning block to move inward.

[0046] In an optional embodiment, the outer wall of the connecting piece is provided with two oppositely arranged fixing buckles;

[0047] The inner wall of the fixing buckle is provided with a protrusion matched with the limiting member;

[0048] Wherein, when the fixing buckle sleeve is arranged on the outer wall of the positioning plate, the protrusion is suitable for squeezing the limiting member so that the outer edge of the limiting member is deformed toward the axial direction.

[0049] In a third aspect, an embodiment of the present disclosure further provides an assembly method of a connection structure, the assembly method comprising:

[0050] When connecting two adjacent valve bodies, the connecting pipe abuts against the connecting piece, and each positioning block is located at the groove of the side wall of the connecting piece;

[0051] Rotate the valve body so that the positioning block is inserted into the connecting piece, so that the two adjacent valve bodies are in the same plane.

[0052] The beneficial effects of the present invention are as follows: the connection structure for the triple valve and the assembly method thereof provided by the present invention, through the cooperation of the connecting piece, the fixing buckle and the connecting pipe, when the two connecting pipes are respectively abutted against the connecting piece, the connecting pipe is rotated to allow the positioning block to be inserted into the corresponding limit piece, so that the two adjacent valve bodies are in the same plane, and at the same time the air tightness of the installation between the adjacent valve bodies is improved; the efficiency of assembly between the valve bodies is improved, and the adjacent valve bodies are avoided from being in the same plane.

[0053] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 A three-dimensional diagram of a connection structure for a triple valve provided in an embodiment of the present disclosure;

[0057] Figure 2 A three-dimensional diagram of the expanded state of the connection structure for the triple valve provided in the embodiment of the present disclosure;

[0058] Figure 3 A three-dimensional diagram of a connecting pipe and a positioning block provided in an embodiment of the present disclosure;

[0059] Figure 4A three-dimensional diagram of a connector provided in an embodiment of the present disclosure;

[0060] Figure 5 A front view of a connecting pipe provided in an embodiment of the present disclosure;

[0061] Figure 6 A front view of a connector provided in an embodiment of the present disclosure;

[0062] Figure 7 A schematic diagram of the abutment state between the positioning plate and the connecting pipe provided in an embodiment of the present disclosure;

[0063] Figure 8 A schematic diagram of the circumferential rotation of the connecting pipe relative to the connecting piece provided in an embodiment of the present disclosure.

[0064] In the figure:

[0065] 1. Connecting piece; 10. Groove; 11. Positioning plate; 12. Through hole; 13. Double-layer sealing ring; 14. Limiting piece; 15. Positioning groove;

[0066] 2. Fixing buckle; 20. Bump;

[0067] 3. Valve body; 30. Connecting pipe; 31. Butt pipe; 4. Positioning block. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0070] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0071] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0072] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0073] After research, it was found that the disadvantages of the existing technology are: when the triple valve is installed, a connecting structure is set between two adjacent valve bodies to connect the adjacent valve bodies, and it is necessary to ensure that the three valve bodies remain in the same horizontal plane.

[0074] The traditional connection structure requires high operator proficiency. It is necessary to constantly adjust the angles of the adjacent valve bodies on the left and right to keep the valve bodies at the same level, while ensuring the airtightness of the connection between the valve bodies. Therefore, the installation of the traditional connection structure is time-consuming and laborious. Moreover, when assembling the triple valve, the sealing of the middle connection structure is required to be higher. When adjusting the adjacent valve bodies to be at the same level, it is also necessary to ensure that the connection between the two valve bodies will not leak.

[0075] Therefore, how to avoid the time-consuming and labor-intensive installation of the connection structure is a technical problem that urgently needs to be solved in this field.

[0076] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0077] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0078] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0079] like Figures 1 to 8 As shown, some embodiments provide a connection structure for a triple valve, including: a connecting piece 1, which is annular and suitable for connecting a connecting pipe 30 on the side walls of two adjacent valve bodies 3; the connecting piece 1 is a flexible piece. When the connecting piece 1 connects the two connecting pipes 30, not only the two adjacent valve bodies 3 on both sides need to maintain the same plane, but also the two connecting pipes 30 need to be connected and sealed to prevent leakage.

[0080] Reference Figure 2 , fixing buckles 2, two fixing buckles 2 are arranged opposite to each other and are sleeved on the outer wall of the connecting member 1; after the two fixing buckles 2 are sleeved on the outer wall of the connecting member 1, the two fixing buckles 2 are fixed by bolts to realize the connection and fixation of the connecting member 1 and the two connecting pipes 30.

[0081] Continue to refer to the attached Figure 2 , positioning blocks 4, a plurality of positioning blocks 4 are evenly distributed on the outer wall of the connecting tube 30; the positioning blocks 4 are arranged radially along the connecting tube 30 and penetrate the connecting tube 30; one positioning block 4 corresponds to one limiting member 14, and the width of the positioning block 4 is smaller than the spacing between two adjacent limiting members 14.

[0082] Reference Figure 7 When it is necessary to connect adjacent valve bodies 3, the connecting pipe 30 moves toward the connecting member 1 to abut against the grooves 10 of the positioning blocks 4 located on the side wall of the connecting member 1; the valve body 3 is rotated so that the positioning blocks 4 are inserted into the connecting member 1, so that the two adjacent valve bodies 3 are in the same plane. Through the cooperation of the connecting member 1, the fixing buckle 2 and the connecting pipe 30, when the two connecting pipes 30 are respectively abutted against the connecting member 1, the connecting pipe 30 is rotated so that the positioning blocks 4 are inserted into the corresponding limiting members 14, so that the two adjacent valve bodies 3 are in the same plane. The assembly efficiency between the valve bodies 3 is improved, and the adjacent valve bodies 3 are prevented from not being in the same plane.

[0083] Reference Figure 4The connector 1 comprises: a positioning plate 11, a through hole 12 is provided inside the positioning plate 11, and the through hole 12 is suitable for connecting two connecting pipes 30 arranged opposite to each other; the outer diameter of the positioning plate 11 is larger than the outer diameter of the connecting pipe 30. A double-layer sealing ring 13, the two double-layer sealing rings 13 are respectively arranged on the left and right sides of the positioning plate 11, and a gap is provided between the inner and outer layers of the double-layer sealing ring 13, and the butt joint pipe 31 is suitable for being inserted into the gap. A pair of pipes 31 are provided inside the connecting pipe 30, and a gap is provided between the outer wall of the butt joint pipe 31 and the inner wall of the connecting pipe 30; the butt joint pipe 31 is adapted to the double-layer sealing ring 13; when the end wall of the connecting pipe 30 abuts against the positioning plate 11, the butt joint pipe 31 is suitable for being inserted into the gap in the middle of the double-layer sealing ring 13, so as to improve the air tightness between the connector 1 and the connecting pipe 30.

[0084] Continue to refer to the attached Figure 4 , the limiting members 14, each two of the limiting members 14 are symmetrically arranged on the left and right sides of the positioning plate 11, and the limiting members 14 on the same side of the positioning plate 11 are evenly distributed on the edge of the positioning plate 11; the groove 10 is arranged between two adjacent limiting members 14; wherein, when the connecting pipe 30 abuts against the positioning plate 11, the positioning block 4 is located between the two limiting members 14; the connecting pipe 30 is rotated circumferentially, the limiting members 14 squeeze the positioning block 4 to move toward the axial direction of the connecting pipe 30, and the positioning block 4 squeezes the double-layer sealing ring 13 to deform it inward, further improving the clamping and sealing effect of the double-layer sealing ring 13 on the butt pipe 31. When the positioning block 4 is limited by the limiting member 14 and cannot continue to rotate, the two adjacent valve bodies 3 are in the same plane.

[0085] Reference Figure 5 , the distance from one end of the outer wall of the positioning block 4 to the other end to the axis of the connecting tube 30 gradually increases; when the positioning block 4 is inserted between two adjacent limit members 14, the connecting tube 30 rotates counterclockwise. The other connecting tube 30 arranged oppositely rotates clockwise; that is, the end of the outer wall of the positioning block 4 with a smaller distance from the axis of the connecting tube 30 first rotates toward the corresponding limit member 14. Among them, when the positioning block 4 abuts against the inner wall of the limit member 14, the limit member 14 gradually squeezes the positioning block 4 to move inward. When the positioning block 4 is squeezed by the limit member 14 to slide radially inward, the inner end of the positioning block 4 abuts against the outer wall of the double-layer sealing ring 13 to squeeze the outer wall of the double-layer sealing ring 13 to bend and deform inward, thereby improving the clamping seal of the double-layer sealing ring 13 on the butt joint 31.

[0086] Continue to refer to the attached Figure 4The inner wall of the limiting member 14 is provided with a positioning groove 15 adapted to the positioning block 4, and the positioning block 4 is suitable for sliding in the positioning groove 15. The groove depth of the positioning groove changes from deep to shallow according to the rotation direction of the positioning block. When the connecting tube 30 rotates circumferentially relative to the positioning disk 11, the positioning block 4 gradually slides into the positioning groove 15. As the connecting tube 30 continues to rotate, the positioning groove 15 is suitable for clamping the limiting positioning block 4 until the connecting tube 30 can no longer rotate relative to the positioning disk 11. The setting of the positioning groove 15 improves the stability of the connection and fixation between the connecting member 1 and the positioning block 4.

[0087] Reference Figure 2 The inner wall of the fixing buckle 2 is provided with a protrusion 20 adapted to the limiter 14; wherein, when the fixing buckle 2 is sleeved on the outer wall of the positioning plate 11, the protrusion 20 is suitable for squeezing the limiter 14 so that the outer edge of the limiter 14 is deformed in the axial direction. The protrusion 20 squeezes the limiter 14 to deform in the axial direction of the positioning plate 11, thereby improving the stability of the fixation between the limiter 14 and the positioning block 4.

[0088] Reference Figure 1 At least one embodiment provides a triple valve, including: a valve body 3, a side wall of which is provided with at least one connecting pipe 30, and the outer wall of the connecting pipe 30 is evenly and slidably provided with a plurality of positioning blocks 4; a connecting piece 1, which is located between two adjacent connecting pipes 30 and includes a plurality of limiting pieces 14, and the spacing between two adjacent limiting pieces 14 is greater than the width of the positioning block 4; wherein, after the connecting pipe 30 abuts against the connecting piece 1, the valve body 3 is rotated so that each positioning block 4 is inserted into the limiting piece 14, so that the two adjacent valve bodies 3 are in the same plane.

[0089] At least one embodiment provides a method for assembling a connection structure, the method comprising:

[0090] When connecting two adjacent valve bodies 3, the connecting pipe 30 abuts against the connecting piece 1, and each positioning block 4 is located at the groove 10 of the side wall of the connecting piece 1; the valve body 3 is rotated so that the positioning block 4 is inserted into the connecting piece 1, so that the two adjacent valve bodies 3 are in the same plane.

[0091] In summary, when connecting and fixing two adjacent valve bodies 3, the connector 1 is vertically arranged between the two connecting pipes 30 until the two connecting pipes 30 are respectively in contact with the two side walls of the positioning plate 11, and the connecting pipes 30 are rotated. At this time, the two connecting pipes 30 on both sides of the positioning plate 11 rotate in opposite directions until the positioning block 4 is inserted into the corresponding limiting groove. The positioning block 4 is squeezed by the limiting member 14 to move toward the axial direction of the connecting pipe 30, and the inner end of the positioning block 4 squeezes the double-layer sealing ring 13 to deform, further improving the clamping and sealing performance of the double-layer sealing ring 13 on the butt pipe 31. When the positioning block 4 cannot continue to move in the positioning groove 15, the two adjacent valve bodies 3 are kept in the same plane.

[0092] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0094] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A connection structure for a triple valve, characterized in that: include: A connecting piece (1) which is annular and is suitable for connecting a connecting pipe (30) between side walls of two adjacent valve bodies (3); Fixed buckles (2), two fixed buckles (2) are arranged opposite to each other and sleeved on the outer wall of the connecting piece (1); Positioning blocks (4), a plurality of positioning blocks (4) being evenly distributed on the outer wall of the connecting pipe (30); When the connecting pipe (30) abuts against the connecting piece (1), each positioning block (4) is located at the groove (10) on the side wall of the connecting piece (1); The valve body (3) rotates, causing the positioning block (4) to rotate from the groove to be inserted into the connecting piece (1), so that two adjacent valve bodies (3) are located in the same plane; The connecting member (1) comprises: a positioning plate (11) having a through hole (12) formed therein; A double-layer sealing ring (13), wherein the two double-layer sealing rings (13) are respectively arranged on the left and right sides of the positioning plate (11); Limiting members (14), wherein every two of the limiting members (14) are symmetrically arranged on the left and right sides of the positioning plate (11), and a plurality of limiting members (14) located on the same side of the positioning plate (11) are evenly distributed on the edge of the positioning plate (11); The groove (10) is arranged between two adjacent limiting members (14); Wherein, when the connecting pipe (30) abuts against the positioning plate (11), the positioning block (4) is located between the two limiting members (14); The connecting tube (30) rotates in the circumferential direction, the limiting member (14) squeezes the positioning block (4) to slide in the axial direction of the connecting tube (30), and the positioning block (4) squeezes the double-layer sealing ring (13) to deform it inwards; The positioning block (4) is arranged radially along the connecting tube (30) and passes through the connecting tube (30); A pair of connecting pipes (31) are arranged inside the connecting pipe (30), and a gap is provided between the outer wall of the connecting pipes (31) and the inner wall of the connecting pipe (30); The butt-joint pipe (31) is adapted to fit the double-layer sealing ring (13); When the connecting pipe (30) abuts against the positioning plate (11), the butt-jointing pipe (31) is inserted between the double-layer sealing rings (13); The connecting tube (30) rotates in a circumferential direction to trigger the limiting member (14) to gradually squeeze the positioning block (4), so that the positioning block (4) moves toward the axial direction of the connecting tube (30).

2. The connection structure for a triple valve according to claim 1, characterized in that: The distance from one end of the outer wall of the positioning block (4) to the axis of the connecting pipe (30) gradually increases from the other end thereof; When the positioning block (4) abuts against the inner wall of the limiting member (14), the limiting member (14) gradually squeezes the positioning block (4) to move inwards.

3. The connection structure for a triple valve according to claim 1, characterized in that: The inner wall of the limiting member (14) is provided with a positioning groove (15) adapted to the positioning block (4), and the outer end of the positioning block (4) is suitable for sliding in the positioning groove (15).

4. The connection structure for a triple valve according to claim 1, characterized in that: The inner wall of the fixing buckle (2) is provided with a protrusion (20) adapted to the limiting member (14); When the fixing buckle (2) is sleeved on the outer wall of the positioning plate (11), the protrusion (20) is suitable for pressing the limiting member (14) so ​​that the outer edge of the limiting member (14) is deformed in the axial direction.

5. A triple valve, characterized in that: include: The valve body (3) has a side wall provided with at least one connecting pipe (30), and a plurality of positioning blocks (4) are evenly and slidably provided on the outer wall of the connecting pipe (30); A connecting member (1) located between two adjacent connecting pipes (30) and comprising a plurality of limiting members (14), wherein the distance between two adjacent limiting members (14) is greater than the width of the positioning block (4); After the connecting pipe (30) is in contact with the connecting piece (1), the valve body (3) is rotated so that each positioning block (4) is inserted into the limiting piece (14) so ​​that two adjacent valve bodies (3) are located in the same plane; The connecting member (1) comprises: a positioning plate (11) having a through hole (12) formed therein; A double-layer sealing ring (13), wherein the two double-layer sealing rings (13) are respectively arranged on the left and right sides of the positioning plate (11); Every two of the limiting members (14) are symmetrically arranged on the left and right sides of the positioning plate (11), and a plurality of limiting members (14) located on the same side of the positioning plate (11) are evenly distributed on the edge of the positioning plate (11); Wherein, when the connecting pipe (30) abuts against the positioning plate (11), the positioning block (4) is located between the two limiting members (14); The connecting tube (30) is rotated in the circumferential direction, the limiting member (14) squeezes the positioning block (4) to move in the axial direction of the connecting tube (30), and the positioning block (4) squeezes the double-layer sealing ring (13) to deform it inwards; The positioning block (4) is arranged radially along the connecting tube (30) and passes through the connecting tube (30); A pair of connecting pipes (31) are arranged inside the connecting pipe (30), and a gap is provided between the outer wall of the connecting pipes (31) and the inner wall of the connecting pipe (30); The butt-joint pipe (31) is adapted to fit the double-layer sealing ring (13); When the connecting pipe (30) abuts against the positioning plate (11), the butt-jointing pipe (31) is inserted between the double-layer sealing rings (13); The connecting tube (30) is rotated in the circumferential direction, and the limiting member (14) is suitable for gradually squeezing the positioning block (4) so ​​that the positioning block (4) moves towards the axial direction of the connecting tube (30).

6. The triple valve according to claim 5, characterized in that: The distance from one end of the outer wall of the positioning block (4) to the axis of the connecting pipe (30) gradually increases from the other end thereof; When the positioning block (4) abuts against the inner wall of the limiting member (14), the limiting member (14) gradually squeezes the positioning block (4) to move inwards.

7. The triple valve according to claim 6, characterized in that: The outer wall of the connecting piece (1) is provided with two oppositely arranged fixing buckles (2); The inner wall of the fixing buckle (2) is provided with a protrusion (20) adapted to the limiting member (14); When the fixing buckle (2) is sleeved on the outer wall of the positioning plate (11), the protrusion (20) is suitable for pressing the limiting member (14) so ​​that the outer edge of the limiting member (14) is deformed in the axial direction.

8. A method for assembling a connection structure, characterized in that: Using the triple valve connection structure according to any one of claims 1 to 4, the assembly method comprises: When two adjacent valve bodies (3) are connected, the connecting pipe (30) abuts against the connecting piece (1), and each positioning block (4) is located in a groove on the side wall of the connecting piece (1); The valve body (3) is rotated so that the positioning block (4) is inserted into the connecting piece (1), so that two adjacent valve bodies (3) are located in the same plane.

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