Valve assembly

Abstract

The utility model discloses a valve assembly, and belongs to the technical field of water affair systems. The valve assembly comprises a first valve, a second valve and a hoop, wherein a first connecting joint is formed at one end of the first valve; a second connecting joint is formed at one end of the second valve, and the second connecting joint is inserted into the first connecting joint in a sealing manner; the hoop is arranged outside the first connecting joint in a sleeving mode and can fix the first valve and the second valve which are connected to each other to a mounting face. According to the valve assembly, the machining efficiency and the assembling efficiency are high, the situation that all the valves are settled in the long-term using process can be avoided, then the sealing performance of the first valve and the second valve at the connecting position is guaranteed, and the using safety is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to water affair system technical field, concretely relates to a valve assembly. BACKGROUND

[0002] Valves are widely used in various industries, in order to meet the complex working condition requirement, sometimes need two or more kinds of valve series connection use. In the water affair industry, the front side and rear side of the water meter installed in the water meter box before the house usually install a plurality of valve (such as ball valve, gate valve or pressure reducing valve etc.), when installing, there are two valve series connection docking situation. For example: the gate valve and check valve of water meter front side are in series, when docking, a threaded joint is usually arranged between the gate valve and check valve, one end of the threaded joint is connected with the gate valve, and the other end of the threaded joint is connected with the check valve. Threaded connection usually has the following problems in assembly and disassembly process:

[0003] 1) the installation process is complicated. First, in order to ensure the sealing effect, during installation, a raw tape is usually wound at the threaded connection, the raw tape is wound too thick, the connection position cannot be docked, and the raw tape is wound too thin, which is easy to leak; in addition, the two ends of the threaded joint are connected with the valves on both sides, so that there are two leakage points on the entire valve assembly, further increasing the risk of leakage.

[0004] 2) the installation angle is not accurate. Since the two ends of the threaded joint are connected with the valves on both sides by threads, when they are screwed, the included angle between the two valves often deviates from the expected angle.

[0005] 3) usually a plurality of copper metal valves are series connected in the water meter box, since the weight of the metal valve is heavy, the valve will sink during long-term use, which affects the sealing of the connection position of the valve, and even causes leakage.

[0006] Therefore, it is urgent to provide a valve assembly to solve the above problems. UTILITY MODEL CONTENTS

[0007] The utility model aims at solving or at least alleviating part or all of the above problems. Therefore, the utility model aims at providing a valve assembly to solve the problems of complicated installation process, inaccurate installation angle and leakage caused by sinking of the valve after long-term use when a plurality of valves are series connected.

[0008] In order to achieve the above target, the utility model adopts the following technical scheme:

[0009] A valve assembly comprises:

[0010] A first valve, one end of the first valve is formed with a first connecting joint;

[0011] The second valve is formed with a second connecting joint at one end, and the second connecting joint is sealingly inserted into the first connecting joint;

[0012] The clamp is sleeved outside the first connecting joint and can fix the connected first valve and second valve on the mounting surface.

[0013] As a preferred scheme of the valve assembly provided by the utility model, the clamp comprises:

[0014] The clamp body is in a U-shaped structure and is sleeved outside the first connecting joint;

[0015] The connecting ears are connected to the two ends of the clamp body respectively, and each connecting ear is connected to the mounting surface through a fixing member.

[0016] As a preferred scheme of the valve assembly provided by the utility model, the inner side of the clamp body is provided with a limiting groove on one of the outer walls of the first connecting joint, and the other outer wall is provided with a first limiting part in limiting cooperation with the limiting groove.

[0017] As a preferred scheme of the valve assembly provided by the utility model, the limiting groove is arranged on the outer wall of the first connecting joint, and the number of the limiting grooves is plural, and each limiting groove is arranged along the circumference of the first connecting joint.

[0018] As a preferred scheme of the valve assembly provided by the utility model, the clamp body and the two connecting ears at the two ends thereof are in an integral molding structure.

[0019] As a preferred scheme of the valve assembly provided by the utility model, the outer wall of the second connecting joint is provided with a second limiting part capable of abutting against the end surface of the first connecting joint.

[0020] As a preferred scheme of the valve assembly provided by the utility model, at least one sealing member is arranged between the first connecting joint and the second connecting joint.

[0021] As a preferred scheme of the valve assembly provided by the utility model, the first valve is further formed with the second connecting joint at the end away from the first connecting joint; and / or the second valve is further formed with the first connecting joint at the end away from the second connecting joint.

[0022] As a preferred scheme of the valve assembly provided by the utility model, the valve assembly further comprises a fixing support, a mounting surface is formed on one side surface of the fixing support, a limiting space is formed between the clamp and the mounting surface, and the first connecting joint and the second connecting joint are limited in the limiting space.

[0023] As a preferred scheme of the valve assembly provided by the utility model, the first valve is a pressure reducing valve, a check valve, a gate valve, a ball valve or a stop valve; and / or the second valve is a pressure reducing valve, a check valve, a gate valve, a ball valve or a stop valve.

[0024] The utility model discloses beneficial effect lies in:

[0025] The valve assembly provided by the utility model is inserted and connected with the first connecting joint and the second connecting joint, on one hand, the first valve and the second valve only need simple plug-in operation to realize the installation and disassembly between them, which can improve the assembly efficiency, on the other hand, the first connecting joint and the second connecting joint do not need to be provided with threaded structures, which can simplify the processing technology and improve the processing efficiency, in addition, the first connecting joint and the second connecting joint are inserted and connected, and the first valve and the second valve can be relatively rotated after being inserted and connected, so that the installation angle between the first valve and the second valve can be adjusted, thereby guaranteeing the accuracy of the installation angle, the clamp can fix the first valve and the second valve on the mounting surface, thereby improving the installation stability of the valve assembly, preventing the valve assembly from sinking during long-term use, and guaranteeing the sealing performance of the first valve and the second valve at the connecting position and the use safety of the whole valve assembly. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings without paying the creative labor for the person skilled in the art.

[0027] Figure 1 It is the structure schematic view that a plurality of valve assemblies provided by the embodiments of the utility model are connected with water inlet pipeline;

[0028] Figure 2 It is the structure schematic view that the clamp of the valve assembly is hidden provided by the embodiments of the utility model;

[0029] Figure 3 It is Figure 1 It is the local enlarged view at A;

[0030] Figure 4is a partial exploded schematic view of the valve assembly provided by the embodiment of the utility model,

[0031] Figure 5 is a partial cross-sectional schematic view of the valve assembly provided by the embodiment of the utility model,

[0032] Figure 6 is a partial structure schematic view of the first valve provided by the embodiment of the utility model,

[0033] Figure 7 is a partial cross-sectional schematic view of the first valve provided by the embodiment of the utility model,

[0034] Figure 8 is a structure schematic view of the clamp under one view angle provided by the embodiment of the utility model,

[0035] Figure 9 is a structure schematic view of the clamp under another view angle provided by the embodiment of the utility model,

[0036] Figure 10 is a structure schematic view of the fixing piece provided by the embodiment of the utility model.

[0037] Reference signs:

[0038] 100, valve assembly; 1001, limiting space; 101, first valve; 102, second valve; 103, intermediate connecting piece;

[0039] 111, first body; 112, first connecting joint; 1121, limiting groove;

[0040] 121, second body; 122, second connecting joint; 1221, second limiting part; 1222, mounting groove;

[0041] 130, clamp; 131, clamp body; 1311, first limiting part; 132, connecting lug; 1321, first perforation;

[0042] 140, fixing support; 141, mounting face;

[0043] 150, fixing piece; 151, penetrating part; 152, clamping part; 153, hand holding part;

[0044] 160, sealing piece;

[0045] 200, water inlet pipeline; 201, water outlet. DETAILED DESCRIPTION

[0046] Before any embodiments of the present utility model are explained in detail, it is to be understood that the present utility model is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described drawings.

[0047] In the present application, the terms "comprise", "contain", "have" or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article or device that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device comprising the element.

[0048] In the present application, the term "and / or" is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, A and / or B can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents a "and / or" relationship between the front and rear associated objects.

[0049] In the present application, the terms "connection", "combination", "coupling" and "installation" can be direct connection, combination, coupling or installation, or indirect connection, combination, coupling or installation. Among them, the direct connection means that two parts or components are connected together without setting intermediate parts, and the indirect connection means that two parts or components are connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0050] In the present application, those skilled in the art will understand that the relative terms used in conjunction with the number or condition (for example, "about", "approximately", "substantially" and the like) include the value indicated by the context. For example, the relative term at least includes the error degree related to the measurement of the specific value, the tolerance caused by manufacturing, assembly, use and the like related to the specific value. Such terms should also be regarded as disclosing the range defined by the absolute values of the two endpoints. The relative term can refer to the addition or subtraction of a certain percentage (for example, 1%, 5%, 10% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to the addition or subtraction of a certain degree (for example, 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0051] In the present utility model, the function executed by the assembly can be executed by one assembly, multiple assemblies, one part, or multiple parts, which will be understood by those skilled in the art.

[0052] In the present utility model, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the present utility model. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can be directly connected to another element "on" or "under", or indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below, etc.

[0053] Figure 1 The structure schematic diagram of the plurality of valve assemblies 100 connected with the water inlet pipeline 200 is shown. Figure 1 As shown in the water meter box at the front end of the house, a plurality of valve assemblies 100 are usually arranged, the inlets of the valve assemblies 100 are communicated with the water outlet 201 of the water inlet pipeline 200, the inlet of the water inlet pipeline 200 is communicated with the municipal water distribution system, and the outlets of the valve assemblies 100 are respectively communicated with the water using equipment in the corresponding user's house to supply water for the user.

[0054] Figure 2 The structure schematic diagram of the valve assembly 100 hiding the clamp 130 is shown. Figure 2 And in combination with Figure 1 As shown, each valve assembly 100 includes at least two valve structures connected in series. In the present embodiment, the valve structure specifically refers to various valves used in the water system, connecting pieces for connecting the valves, water meters for recording the water consumption of the user, etc. Exemplarily, the valve assembly 100 includes a first valve 101, a second valve 102 and an intermediate connecting piece 103, wherein the first valve 101 and the second valve 102 are connected, one end of the first valve 101 away from the second valve 102 is connected with the water inlet pipeline 200 through the intermediate connecting piece 103, and one end of the second valve 102 away from the first valve 101 is connected with the corresponding water outlet pipeline through another intermediate connecting piece 103, so as to realize the connection of the valve structures in series. In the present embodiment, the first valve 101, the second valve 102 and the intermediate connecting piece 103 are all defined as valve structures.

[0055] It should be noted that the specific structure and type of the above-mentioned valve are not limited in this embodiment, that is, the first valve 101 can be a pressure reducing valve, a check valve, a gate valve, a ball valve, a stop valve, etc.; the second valve 102 can be a pressure reducing valve, a check valve, a gate valve, a ball valve, a stop valve, etc.

[0056] In the prior art, a pair of threaded joints are usually used to connect the structures of two adjacent valves, that is, a pair of threaded joints are arranged between the structures of two adjacent valves, one end of the threaded joint is threadedly connected with one of the valve structures, and the other end of the threaded joint is threadedly connected with the other valve structure. However, the threaded connection usually has problems of complicated installation process and inaccurate installation angle during disassembly and assembly, and in addition, for the valve assembly 100 in the water meter box, there is also a settlement phenomenon during long-term use, which affects the sealing performance of the connection position of the valve structures, and even causes leakage.

[0057] Figure 3 A partial enlarged view at A is shown. Figure 1 A partial enlarged view at A is shown. Figure 3 A partial enlarged view at A is shown. Figure 1 , Figure 2 To solve the above-mentioned problems, in this embodiment, the valve assembly 100 further comprises a clamp 130, which can fix the two connected valve structures on the installation surface 141. Thus, the installation stability of the valve assembly 100 is improved, the settlement of the valve assembly 100 during long-term use is prevented, and thus the sealing performance of the connection position of the two valve structures is ensured, and the use safety of the entire valve assembly 100 is ensured. The installation surface 141 can be a wall surface, an inner wall surface of a water meter box, etc.

[0058] Figure 4 A partial exploded view of the valve assembly 100 provided in this embodiment is shown. Figure 5 A partial cross-sectional view of the valve assembly 100 provided in this embodiment is shown. As shown in Figures 4-5 A partial cross-sectional view of the valve assembly 100 provided in this embodiment is shown. As shown in Figure 3 For convenience of description, the specific structure of the valve assembly 100 provided in this embodiment will be introduced below by taking the connection between the first valve 101 and the second valve 102 as an example. The connection mode between the first valve 101 and the intermediate connecting piece 103 and the connection mode between the second valve 102 and the intermediate connecting piece 103 are the same as the connection mode between the first valve 101 and the second valve 102.

[0059] Specifically, the first valve 101 comprises a first body 111 and a first connecting joint 112 connected with each other, and the second valve 102 comprises a second body 121 and a second connecting joint 122 connected with each other. When connected, the second connecting joint 122 is sealingly inserted into the first connecting joint 112, so that the first connecting joint 112 and the second connecting joint 122 are connected with each other, and the fluid medium in the first valve 101 and the second valve 102 can flow to each other. The clamp 130 is sleeved on the first connecting joint 112 and can fix the first valve 101 and the second valve 102 connected with each other on the mounting surface 141.

[0060] The valve assembly provided by the embodiment can realize the installation and disassembly between the first valve 101 and the second valve 102 through the insertion and connection of the first connecting joint 112 and the second connecting joint 122, which can improve the assembly efficiency. In addition, the first connecting joint 112 and the second connecting joint 122 do not need to be provided with a threaded structure, which can simplify the processing technology and improve the processing efficiency. In addition, the first connecting joint 112 and the second connecting joint 122 can be relatively rotated after being inserted, so as to adjust the installation angle between the two, thereby ensuring the accuracy of the installation angle. The clamp 130 can fix the first valve 101 and the second valve 102 on the mounting surface 141, thereby improving the installation stability of the valve assembly 100, preventing the valve assembly 100 from sinking during long-term use, and ensuring the sealing performance of the first valve 101 and the second valve 102 at the connection position and the safety of the valve assembly 100.

[0061] To realize the sealing connection between the first connecting joint 112 and the second connecting joint 122, at least one sealing element 160 is arranged between the first connecting joint 112 and the second connecting joint 122, as shown in Figure 4 and Figure 5 The arrangement of the sealing element 160 can prevent the fluid medium in the first valve 101 and the second valve 102 from leaking from the gap between the first connecting joint 112 and the second connecting joint 122. In the embodiment, the number of the sealing element 160 is two, and the two sealing elements 160 are arranged in the axial direction of the second connecting joint 122, which can reduce the number of the sealing element 160 while ensuring the sealing performance, thereby reducing the processing cost. The sealing element 160 is a rubber sealing ring, which has good sealing effect and low cost. It should be noted that the number of the sealing element 160 is not limited in the embodiment, and the number of the sealing element 160 can be one, three, four, five or even more.

[0062] To ensure the stability of the installation of the sealing member 160, in the embodiment, the outer wall of the second connecting joint 122 is provided with a mounting groove 1222 for mounting the sealing member 160, so as to avoid the falling or displacement of the sealing member 160. Of course, in other embodiments, the mounting groove 1222 can also be arranged on the inner wall of the first connecting joint 112 to mount the sealing member 160, and the above-mentioned effect can also be achieved.

[0063] Figure 6 A partial structural schematic diagram of the first valve 101 provided by the embodiment is shown. The figure shows a partial cross-sectional schematic diagram of the first valve 101 provided by the embodiment. As shown in the figure, Figures 6-7 and in combination with Figure 5 As shown, the outer wall of the second connecting joint 122 is provided with a second limiting portion 1221 capable of abutting against the end face of the first connecting joint 112. By arranging the second limiting portion 1221, the depth of the insertion of the second connecting joint 122 into the first connecting joint 112 can be limited, so as to avoid the collision between the end face of the first connecting joint 112 and other structures on the second valve 102, thereby affecting the surface quality of the components. Alternatively, the second limiting portion 1221 is a ring-shaped protrusion arranged on the outer wall of the second connecting joint 122, which is simple in structure and convenient to process.

[0064] Figure 8 A structural schematic diagram of the clamp 130 provided by the embodiment is shown from one perspective. Figure 9 A structural schematic diagram of the clamp 130 provided by the embodiment is shown from another perspective. As shown in the figure, Figures 8-9 and in combination with Figure 3 As shown, the clamp 130 includes a clamp body 131 and connecting ears 132. The clamp body 131 is in a U-shaped structure, and the clamp body 131 is sleeved outside the first connecting joint 112. The two connecting ears 132 are respectively connected to the two ends of the clamp body 131, and each connecting ear 132 is connected to the mounting face 141 through a fixing member 150. By arranging the clamp body 131 in a U-shaped structure, when the clamp body 131 is sleeved outside the first connecting joint 112, the inner side surface of the clamp body 131 can be in close contact with the outer wall of the first connecting joint 112, thereby increasing the contact area between the clamp body 131 and the first connecting joint 112 and further improving the installation stability of the valve assembly 100.

[0065] Alternatively, the clamp body 131 and the connecting ears 132 are in an integral molding structure, so that the assembly process between the clamp body 131 and the connecting ears 132 can be omitted, the processing efficiency is improved, and the structural strength of the clamp 130 can be ensured to avoid the disconnection of the connection position between the clamp body 131 and the connecting ears 132 during long-term use.

[0066] As shown in the figure, Figure 6 and Figure 9As shown, the inner side of the clamping body 131 is provided with a limiting groove 1121 on one of the outer walls of the first connecting joint 112, and the other is provided with a first limiting portion 1311 which is limitedly matched with the limiting groove 1121. By setting the limiting groove 1121 and the first limiting portion 1311 which are matched, the clamping body 130 and the first connecting joint 112 can be limited, so as to avoid the first connecting joint 112 or the second connecting joint 122 from moving along the axial direction in the use process, so as to further ensure the installation stability of the entire valve assembly 100.

[0067] Optionally, the limiting groove 1121 is arranged on the outer wall of the first connecting joint 112, and the number of the limiting grooves 1121 is multiple, and each limiting groove 1121 is arranged in a spaced manner along the circumference of the first connecting joint 112. This design can improve the assembly efficiency and assembly accuracy between the clamping body 130 and the valve structure, that is, after the first valve 101 and the second valve 102 are inserted, the clamping body 130 can be limitedly matched with the first connecting joint 112 at multiple installation angles.

[0068] As shown in Figure 1 and Figure 3 , the valve assembly 100 further comprises a fixing support 140, one side surface of the fixing support 140 forms the above-mentioned mounting surface 141, and the clamping body 130 and the mounting surface 141 form a limiting space, and the first connecting joint 112 and the second connecting joint 122 which are inserted are limited in the limiting space 1001. By setting the fixing support 140, when the valve assembly 100 is applied to the water meter box, the fixing support 140 of the assembled valve assembly 100 can be directly connected to the box body of the water meter box, so as to reduce the workload when the valve assembly 100 is connected to the box body of the water meter box, and improve the installation efficiency. Of course, in other embodiments, the clamping body 130 can be directly fixed in the box body of the water meter box, and the same effect can also be achieved.

[0069] Figure 10 The structure schematic diagram of the fixing member 150 provided by the embodiment is shown. As shown in Figure 10 and in combination with Figure 1 , Figure 3As shown, the fastener 150 includes a through-hole 151 and a snap-fit ​​part 152 and a handle part 153 respectively connected to both ends of the through-hole 151. At least two snap-fit ​​parts 152 are distributed in an umbrella shape along the circumference of the through-hole 151. The clamp 130 is provided with a first through hole 1321, and the fixing bracket 140 is provided with a second through hole. The through-hole 151 is sequentially inserted into the first through hole 1321 and the second through hole, and the snap-fit ​​part 152 is snapped onto the side of the fixing bracket 140 opposite to the clamp 130. The handle part 153 is provided to facilitate the operator's grip to connect the fastener 150 to the clamp 130 and the fixing bracket 140. On the other hand, it can also cooperate with the snap-fit ​​part 152 to play a mutual restraining role, thereby increasing the fixing effect.

[0070] Of course, in other embodiments, the fastener 150 can also be a bolt, one of the first through hole 1321 and the second through hole is a through hole and the other is a threaded hole. The fastener 150 passes through the through hole and is threaded into the threaded hole, thereby achieving a stable connection between the clamp 130 and the fixed bracket 140.

[0071] Continue as Figures 1-3 As shown, to facilitate the sequential connection of multiple valve structures, a second connecting joint 122 is formed at the end of the first valve 101 away from the first connecting joint 112; a first connecting joint 112 is also formed at the end of the second valve 102 away from the second connecting joint 122. That is, the two ends of the first valve 101 form a first connecting joint 112 and a second connecting joint 122, respectively; the two ends of the second valve 102 also form a first connecting joint 112 and a second connecting joint 122, respectively. During connection, the first connecting joint 112 of the first valve 101 is inserted into the second connecting joint 122 of the second valve 102, and the second connecting joint 122 of the first valve 101 can be inserted into a third valve or an intermediate connecting member 103. Similarly, the first connecting joint 112 of the second valve 102 can be inserted into a third valve or an intermediate connecting member 103.

[0072] In this embodiment, to simplify the installation process, such as Figure 1 As shown, each pair of adjacent valve structures along the second direction corresponds to a clamp 130 at their connection point, and multiple clamps 130 spaced apart along the first direction are connected to the same fixed bracket 140. This design can save the number of fixed brackets 140, facilitate assembly, and reduce processing and assembly costs; in addition, this design can also position each valve assembly 100 in the first direction to ensure accurate installation of each valve assembly 100 and keep the water meter box orderly. Specifically, the first direction refers to the axial direction of the inlet pipe 200, and the second direction refers to the axial direction of the outlet 201 of the inlet pipe 200.

[0073] The basic principle, main features and advantages of the present application are shown and described above. The skilled in the art should understand that the above examples do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A valve assembly comprising: The utility model relates to a valve assembly, which comprises: a first valve (101) having a first connecting joint (112) formed at one end thereof; a second valve (102) having a second connecting joint (122) formed at one end thereof, the second connecting joint (122) being sealingly inserted into the first connecting joint (112); a clamp (130) sleeved outside the first connecting joint (112) and capable of fixing the connected first valve (101) and second valve (102) to a mounting surface (141).

2. The valve assembly of claim 1, wherein, The clamp (130) comprises: a clamp body (131) in a U-shaped structure, the clamp body (131) being sleeved outside the first connecting joint (112); two connecting ears (132) connected to two ends of the clamp body (131) respectively, each connecting ear (132) being connected to the mounting surface (141) through a fixing member (150).

3. The valve assembly of claim 2, wherein, The inner side of the clamp body (131) is provided with a limiting groove (1121) on one of the outer walls of the first connecting joint (112), and the other outer wall is provided with a first limiting portion (1311) limitingly matched with the limiting groove (1121).

4. The valve assembly of claim 3, wherein, The limiting groove (1121) is arranged on the outer wall of the first connecting joint (112), and a plurality of limiting grooves (1121) are arranged along the circumference of the first connecting joint (112) at intervals.

5. The valve assembly of claim 2, wherein, The clamp body (131) and the two connecting ears (132) at the two ends thereof are in an integral molding structure.

6. The valve assembly of claim 1, wherein, The outer wall of the second connecting joint (122) is provided with a second limiting portion (1221) capable of abutting against the end surface of the first connecting joint (112).

7. The valve assembly of claim 1, wherein, At least one sealing member (160) is arranged between the first connecting joint (112) and the second connecting joint (122).

8. The valve assembly of claim 1, wherein, The end of the first valve (101) away from the first connecting joint (112) is also provided with the second connecting joint (122); and / or the end of the second valve (102) away from the second connecting joint (122) is also provided with the first connecting joint (112).

9. The valve assembly of any one of claims 1-8, wherein, The valve assembly further comprises a fixing support (140), one side surface of the fixing support (140) forming the mounting surface (141), a limiting space being formed between the clamp (130) and the mounting surface (141), and the first connecting joint (112) and the second connecting joint (122) being limited in the limiting space (1001).

10. The valve assembly of any one of claims 1-8, wherein, The first valve (101) is a pressure reducing valve, check valve, gate valve, ball valve or stop valve; and / or the second valve (102) is a pressure reducing valve, check valve, gate valve, ball valve or stop valve.

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