Spliced check valve

Abstract

The utility model discloses a spliced check valve, which belongs to the technical field of check valves and comprises a valve shell, a water inlet pipe and a water outlet pipe are detachably mounted at two ends of the valve shell, a detachably connected valve cover covers the top of the valve shell, and a detachable swing valve is mounted on the inner wall of the valve shell and can be turned up and down. The detachable swing valve comprises a valve body, an installation insertion rail and an insertion base piece, the valve body is rotationally connected with the insertion base piece through a hinge seat, the installation insertion rail is fixedly arranged on the inner wall of the valve shell, the insertion base piece is connected with the installation insertion rail in an insertion mode, and the insertion base piece is connected with the valve shell through a bolt. According to the technical scheme, in the water stop valve, due to the fact that the water inlet pipe, the water outlet pipe, the detachable swing valve, the valve deck and the limiting piece are all detachably connected with the valve shell, the check valve has high splicing performance, when a local structure is damaged, the damaged part can be conveniently detached and replaced with a new part, and the use and maintenance cost of the check valve is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically a modular check valve. Background Technology

[0002] A check valve, also known as a non-return valve, one-way valve, backflow valve, or isolation valve, is a type of valve whose opening and closing element (valve disc) is circular and relies on its own weight and the pressure of the medium to actuate and prevent backflow. Its main function is to allow fluid to flow in only one direction. When backflow occurs, the valve disc automatically closes, thereby cutting off the flow path and preventing damage caused by backflow. Due to its reliable unidirectional flow characteristic, check valves are widely used in various piping systems.

[0003] The utility model with announcement number CN218971908U discloses a clamp check valve. This utility model uses a mating block inserted into the clamp limiting structure and locked by a locking rod, which facilitates the splicing of the clamp check valve with the pipeline and improves installation efficiency. Water flow or medium will push the anti-backflow baffle to open quickly and push the anti-backflow baffle to fit against the second sealing ring on the valve body core. The buffer spring plays a buffering and protective role for the telescopic rod and the anti-backflow baffle.

[0004] While the aforementioned check valve facilitates efficient connection to pipelines, it suffers from a high degree of structural integrity and poor disassembly. Furthermore, its complex internal structure makes it difficult to disassemble and replace damaged parts of the valve during use, often requiring the replacement of the entire valve body. Even when disassembly and repair are performed, the time required is considerable, leading to high maintenance costs. Therefore, to address these issues, a modular check valve is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a modular check valve. The main body of the check valve is the valve shell, and the inlet and outlet pipes at both ends are detachably connected to it. In addition, the detachable swing valve and the limiting component in the valve shell are also detachably connected. In summary, the check valve has high modularity. When a local structure is damaged, the damaged part can be easily disassembled and replaced, which significantly reduces the use and maintenance cost of the check valve. This solves the technical problem in the comparative technology that the valve itself has strong integrity, and when the internal structure of the valve is damaged, it is difficult to disassemble and replace it conveniently and efficiently, resulting in high maintenance costs.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A modular check valve includes a valve housing with an inlet pipe and an outlet pipe detachably mounted at both ends, and a detachably connected valve cover on top. A detachable swing valve is installed on the inner wall of the valve housing.

[0008] The detachable swing valve is detachably connected to the valve housing and can be flipped up and down. The detachable swing valve includes a valve body, a mounting rail, and a plug-in base. The valve body and the plug-in base are rotatably connected by a hinge seat. The mounting rail is fixedly set on the inner wall of the valve housing. The plug-in base is plugged into the mounting rail and bolted to the valve housing. In this check valve, since the inlet pipe, outlet pipe, detachable swing valve, valve cover, and limiting component are all detachably connected to the valve housing, the check valve has high splicing capability. When a local structure is damaged, the damaged part can be easily disassembled and replaced, significantly reducing the use and maintenance cost of the check valve.

[0009] In one possible implementation, the valve body includes a valve plate with a connecting rod fixedly mounted thereon. The top end of the connecting rod is hinged to a hinge seat, and a sealing plug is provided on the inner end face of the valve plate. The sealing plug can block the water inlet pipe when the valve body is closed, thereby preventing backflow. The valve plate can enhance the overall rigidity of the sealing plug, preventing it from being deformed under pressure during use and affecting the sealing effect on the water inlet pipe.

[0010] In one possible implementation, the outer end face of the valve plate is fixedly provided with several transversely arranged reinforcing ribs, and all reinforcing ribs are fixedly connected to the connecting rod. The reinforcing ribs can enhance the overall bending strength of the valve plate and prevent it from deforming under water pressure, which would cause the sealing plug to deform and affect the sealing effect.

[0011] In one possible implementation, a plug head is fixedly provided on the inner end face of the sealing rubber plug, the size of which matches the size of the inner port of the water inlet pipe. This structure can ensure that when the sealing rubber plug is in contact with the water inlet pipe, the plug head can completely block the water inlet pipe opening, thereby improving the sealing effect of the water inlet pipe.

[0012] In one possible implementation, detachable limiting members are installed on the inner walls of both sides of the valve housing to limit the maximum opening range of the detachable swing valve. The limiting member includes a mounting plate bolted to the valve housing, on which a stop bar is fixedly installed. The stop bar can limit the maximum opening angle of the detachable swing valve to prevent it from over-opening and failing to reset immediately under the impact of backflow, thus causing the check valve function to fail.

[0013] In one possible implementation, a rectangular groove is provided at the top of the valve housing, in which a sealing strip is provided, and the valve cover and the valve housing are fixedly connected by bolts. The sealing strip can enhance the airtightness of the connection between the valve cover and the valve housing.

[0014] In one possible implementation, the valve housing has a connecting boss at one end near the water inlet pipe, and a water inlet sealing ring is installed on its outer end face. A first connecting ring is fixedly installed on the water inlet pipe, and the first connecting ring is bolted to the corresponding connecting boss. The water inlet sealing ring can enhance the sealing performance of the connection between the valve housing and the water inlet pipe and prevent liquid from flowing out.

[0015] In one possible implementation, the valve housing has a connecting boss at one end near the outlet pipe, with an outlet sealing ring installed on its outer end face, and a second connecting ring fixedly installed on the outlet pipe.

[0016] The corresponding connecting bosses are bolted together, and the outlet sealing ring enhances the sealing between the valve housing and the outlet pipe, preventing liquid from flowing out.

[0017] In summary, this utility model has the following beneficial technical effects:

[0018] The main body of the check valve is the valve shell, and the inlet and outlet pipes at both ends are detachably connected to it. In addition, the detachable swing valve and the limiting component in the valve shell are also detachably connected. In summary, the check valve has high splicing ability. When a local structure is damaged, the damaged part can be easily disassembled and replaced, which significantly reduces the use and maintenance cost of the check valve.

[0019] In addition, the sealing strips located between the valve cover and the valve housing, the inlet sealing ring between the valve housing and the inlet pipe, and the outlet sealing ring between the valve housing and the outlet pipe can enhance the sealing effect of the above three connections, thereby ensuring that the entire valve body has a high sealing performance despite having strong splicing capabilities. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of this utility model; Figure 2 is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 is a schematic diagram of the overall structure of this utility model; Figure 4 is a schematic diagram of a partial structure of this utility model;

[0023] Figure 5 is a schematic diagram of the detachable swing valve structure of this utility model.

[0024] In the diagram: 1. Valve housing; 11. Sealing strip; 12. Connecting boss; 13. Outlet sealing ring; 14. Inlet sealing ring; 2. Inlet pipe; 21. First connecting ring; 3. Outlet pipe; 31. Second connecting ring; 4. Detachable swing valve; 41. Mounting rail; 42. Insert base plate; 43. Hinge seat; 44. Connecting rod; 45. Valve plate; 451. Reinforcing rib; 46. Sealing plug; 461. Plug head; 5. Valve cover; 6. Limiting element; 61. Mounting plate; 62. Stop bar. Detailed Implementation

[0025] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0026] As shown in Figures 1, 2, and 4, this embodiment provides a modular check valve, including a valve housing 1 with an inlet pipe 2 and an outlet pipe 3 detachably installed at both ends. A detachable valve cover 5 is provided on the top of the valve housing. A detachable swing valve 4 is installed on the inner wall of the valve housing 1 and is detachably connected to the valve housing 1.

[0027] The detachable swing valve 4 can be flipped up and down. The detachable swing valve 4 includes a valve body, a mounting rail 41, and a plug-in base plate 42. The valve body and the plug-in base plate 42 are rotatably connected by a hinge seat 43. The mounting rail 41 is fixedly set on the inner wall of the valve housing 1. The plug-in base plate 42 is plugged into the mounting rail 41 and bolted to the valve housing 1. In this check valve, since the inlet pipe 2, outlet pipe 3, detachable swing valve 4, valve cover 5, and limiting member 6 are all detachably connected to the valve housing 1, the check valve has high splicing capability. When a local structure is damaged, the damaged part can be easily disassembled and replaced, significantly reducing the use and maintenance cost of the check valve.

[0028] As shown in Figure 3-5, the valve body includes a valve plate 45, on which a connecting rod 44 is fixedly mounted. The top end of the connecting rod 44 is hinged to a hinge seat 43. A sealing plug 46 is provided on the inner end face of the valve plate 45. The sealing plug 46 can block the water inlet pipe 2 when the valve body is closed, preventing backflow. The valve plate 45 enhances the overall rigidity of the sealing plug 46, preventing it from deforming under pressure during use and affecting the sealing effect on the water inlet pipe 2. Several transversely arranged reinforcing ribs 451 are fixedly mounted on the outer end face of the valve plate 45, and all reinforcing ribs 451 are fixedly connected to the connecting rod 44. The reinforcing ribs 451 enhance the overall bending strength of the valve plate 45, preventing it from deforming under water pressure, which would cause the sealing plug 46 to deform and affect the sealing effect. In addition, a plug head 461 is fixedly mounted on the inner end face of the sealing plug 46, the size of which matches the inner port size of the water inlet pipe 2. This structure ensures that when the sealing plug 46... When in contact with the inlet pipe 2, the plug 461 can completely seal the opening of the inlet pipe 2, improving the sealing effect of the inlet pipe 2.

[0029] like Figure 4 As shown, detachable limiting members 6 are installed on both inner walls of the valve housing 1 to limit the maximum opening range of the detachable swing valve 4. The limiting member 6 includes a mounting plate 61 bolted to the valve housing 1, on which a stop rod 62 is fixedly installed. The stop rod 62 can limit the maximum opening angle of the detachable swing valve 4 to prevent it from opening too much and failing to reset immediately under the impact of backflow, thus causing the check valve function to fail.

[0030] As shown in Figure 3, a rectangular groove is provided at the top of the valve housing 1, in which a sealing strip 11 is provided, and the valve cover 5 is fixedly connected to the valve housing 1 with bolts. The sealing strip 11 can enhance the airtightness of the connection between the valve cover 5 and the valve housing 1.

[0031] Additionally, the valve housing 1 has a connecting boss 12 near the inlet pipe 2, with an inlet sealing ring 14 installed on its outer end face. A first connecting ring 21 is fixedly installed on the inlet pipe 2, and the first connecting ring 21 is bolted to the corresponding connecting boss 12. The inlet sealing ring 14 enhances the sealing performance between the valve housing 1 and the inlet pipe 2, preventing liquid leakage. The valve housing 1 also has a connecting boss 12 near the outlet pipe 3, with an outlet sealing ring 13 installed on its outer end face. A second connecting ring 31 is fixedly installed on the outlet pipe 3.

[0032] The two connecting rings 31 are bolted to the corresponding connecting bosses 12. The water outlet sealing ring 13 can enhance the sealing of the connection between the valve housing 1 and the water outlet pipe 3 and prevent liquid from flowing out.

[0033] The working principle and usage process of this utility model:

[0034] The detachable swing valve 4, installed on the inner wall of the valve housing 1, can control the degree of opening of the inlet pipe 2 by rotation; when rotated downward, it fits against the inner end of the inlet pipe 2, blocking the inlet pipe 2, and when rotated upward, it separates from the inlet pipe 2, opening the passage of the inlet pipe 2.

[0035] The main body of the check valve is the valve housing 1, and the inlet pipe 2 and outlet pipe 3 at both ends are detachably connected to it. In addition, the detachable swing valve 4 and the limiting component 6 in the valve housing 1 are also detachably connected. In summary, the check valve has high splicing capability. When a local structure is damaged, the damaged part can be easily disassembled and replaced, which significantly reduces the use and maintenance cost of the check valve.

[0036] In addition, the sealing strip 11 located between the valve cover 5 and the valve housing 1, the inlet sealing ring 14 between the valve housing 1 and the inlet pipe 2, and the outlet sealing ring 13 between the valve housing 1 and the outlet pipe 3 can respectively enhance the sealing effect of the above three connections, thereby ensuring that the entire valve body still has high sealing performance under the premise of strong splicing.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A modular check valve, characterized in that, include: The valve housing (1) has an inlet pipe (2) and an outlet pipe (3) that can be detachably installed at both ends, and a detachably connected valve cover (5) is provided on its top. A detachable swing valve (4) is installed on the inner wall of the valve housing (1) and is detachably connected to the valve housing (1). The detachable swing valve (4) can be flipped up and down. The detachable swing valve (4) includes a valve body, a mounting rail (41) and a plug-in base plate (42). The valve body and the plug-in base plate (42) are rotatably connected by a hinge seat (43). The mounting rail (41) is fixedly installed on the inner wall of the valve housing (1). The plug-in base plate (42) is plugged into the mounting rail (41) and is bolted to the valve housing (1).

2. The modular check valve according to claim 1, characterized in that: The valve body includes a valve plate (45) with a connecting rod (44) fixedly mounted on it. The top end of the connecting rod (44) is hinged to the hinge seat (43), and a sealing rubber plug (46) is provided on the inner end face of the valve plate (45).

3. The modular check valve according to claim 2, characterized in that: The valve plate (45) has several horizontally arranged reinforcing ribs (451) fixedly provided on its outer end face, and all reinforcing ribs (451) are fixedly connected to the connecting rod (44).

4. A modular check valve according to claim 2, characterized in that: The inner end face of the sealing rubber plug (46) is fixedly provided with a plug head (461), the size of which matches the size of the inner port of the water inlet pipe (2).

5. A modular check valve according to claim 1, characterized in that: The valve housing (1) has detachable limiting members (6) installed on both inner walls to limit the maximum opening range of the detachable swing valve (4). The limiting member (6) includes a mounting plate (61) bolted to the valve housing (1) and a stop bar (62) fixedly mounted thereon.

6. A modular check valve according to claim 1, characterized in that: The valve housing (1) has a rectangular groove at its top, in which a sealing strip (11) is provided, and the valve cover (5) is fixedly connected to the valve housing (1) with bolts.

7. A modular check valve according to claim 1, characterized in that: The valve housing (1) has a connecting boss (12) at one end near the water inlet pipe (2), and a water inlet sealing ring (14) is installed on its outer end face. A first connecting ring (21) is fixedly installed on the water inlet pipe (2), and the first connecting ring (21) is bolted to the corresponding connecting boss (12).

8. A modular check valve according to claim 1, characterized in that: The valve housing (1) A connecting boss (12) is provided at one end near the water outlet pipe (3), and a water outlet sealing ring (13) is installed on its outer end face. A second connecting ring (31) is fixedly installed on the water outlet pipe (3), and the second connecting ring (31) is bolted to the corresponding connecting boss (12).

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