Low-noise check valve with filtering mechanism

Abstract

The utility model relates to the technical field of check valves, in particular to a low-noise check valve with a filtering mechanism, which comprises a valve body mechanism, the filtering mechanism, a water inlet pipe, a water outlet pipe and a connecting pipe. The water inlet pipe is connected to the shell and communicated with the shell through the connecting hole, connecting rings are arranged at the two ends of the filter cartridge, threads are formed in the connecting rings, the filter cartridge is arranged in the shell, one end of the filter cartridge is in threaded connection with the water inlet pipe through one connecting ring, and the other end of the filter cartridge is in threaded connection with the shell through the other connecting ring. One end of the connecting pipe communicates with the shell through the water outlet, the other end of the connecting pipe communicates with the valve body mechanism, and the water outlet pipe is arranged on the valve body mechanism and communicates with the valve body mechanism. According to the check valve, the independent and detachable filtering mechanism is arranged, a good filtering effect is achieved on liquid flowing through the check valve, and it is guaranteed that the check valve can work efficiently for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a low-noise check valve with a filtering mechanism. Background Art

[0002] Check valves are also called non-return valves. Their function is to prevent the medium in the pipeline from flowing back. The opening and closing parts are opened or closed automatically by the flow and force of the medium to prevent the medium from flowing back. Check valves belong to the automatic valve category. They are mainly used in pipelines where the medium flows in one direction. They only allow the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline. At present, the Chinese utility model patent application with publication date of October 20, 2023 and publication number CN219866442U proposes a slow-closing check valve, which includes an inlet pipe, a valve body, an outlet pipe, a mounting plate, a mounting cylinder, a piston rod, a valve disc, a partition, a piston block, a cover plate, a spring, a connecting rod and an end head. The inlet pipe and the outlet pipe are connected to the valve body, and the mounting plate is respectively connected to the inlet pipe and the outlet pipe; the partition and the mounting cylinder are connected to the valve body, the piston rod is slidably connected to the mounting cylinder, and the valve disc is connected to the piston rod; an oil tank is provided in the mounting cylinder, the piston block is connected to the piston rod, the piston block slides in the oil tank, a mounting plate is provided in the mounting cylinder, the cover plate is connected to the connecting rod, the end head is connected to the connecting rod, and the spring is connected to the mounting plate and the end head. In this utility model, the valve disc is slowly closed by slowing down the sliding speed of the piston rod in the mounting cylinder, further protecting the valve disc and the valve body and increasing the service life of the valve disc.

[0003] The slow-closing check valve in the related art has the problem that the filter screen cannot be disassembled, and foreign matter may clog the filter screen and the water inlet after long-term use. Summary of the invention

[0004] The embodiment of the present application provides a low-noise check valve with a filtering mechanism, which can improve the problem of the non-detachable filter screen in the related art.

[0005] The embodiment of the present application provides a low-noise check valve with a filtering mechanism, comprising: a valve body mechanism, a filtering mechanism, a water inlet pipe, a water outlet pipe and a connecting pipe, the filtering mechanism comprising a shell, a filter cartridge, connecting holes are provided at both ends of the shell, a water outlet is provided on the shell, the water inlet pipe is connected to the shell and communicates with the shell through the connecting holes, connecting rings are provided at both ends of the filter cartridge, threads are provided on the connecting rings, the filter cartridge is arranged inside the shell, one end of the filter cartridge is threadedly connected to the water inlet pipe through a connecting ring, the other end of the filter cartridge is threadedly connected to the shell through another connecting ring, one end of the connecting pipe is communicated with the shell through the water outlet, the other end of the connecting pipe is communicated with the valve body mechanism, the water outlet pipe is provided on the valve body mechanism, and the water outlet pipe is communicated with the valve body mechanism.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0007] When the check valve is in use, the liquid will first pass through the filter mechanism when it flows into the valve through the water inlet pipe. When the liquid passes through the filter cartridge in the filter mechanism, the filter cartridge will filter out most of the impurities in the liquid. The filtered liquid can then enter the valve body through the connecting pipe, which can effectively prevent the impurities in the liquid from interfering with the normal operation of the valve body. After long-term use, the filter cartridge filtering effect of the check valve will decrease, and foreign matter will accumulate inside the filter mechanism. Since the filter cartridge is connected to the filter mechanism housing through threads, the filter cartridge can be unscrewed to clean the inside of the filter mechanism, and a new filter cartridge can be replaced, ensuring that the check valve can work efficiently for a long time.

[0008] A low-noise check valve with a filtering mechanism provided in an embodiment of the present application is provided with an independent and detachable filtering mechanism, which can effectively filter the liquid passing through the check valve. After long-term use, the filtering effect of the filter cartridge of the check valve decreases, and foreign matter will accumulate inside the filtering mechanism. At this time, the inside of the filtering mechanism can be cleaned by unscrewing the filter cartridge and replaced with a new filter cartridge, thereby ensuring that the check valve can work efficiently for a long time.

[0009] In some embodiments, the filtering mechanism further includes a first sealing gasket, which is disposed between the water inlet pipe and the connecting ring.

[0010] In some embodiments, the filter mechanism further includes a second sealing gasket and a rotating handle, wherein the second sealing gasket is disposed between the filter cartridge and the housing, and the rotating handle is disposed on an end of the filter cartridge away from the water inlet pipe.

[0011] In some embodiments, the valve body mechanism includes a valve body, a sealing assembly and an adjusting assembly. The valve body is connected to the shell through a connecting pipe. The sealing assembly includes a rotating shaft, a limiting ring, a connecting rod and a sealing plate. The limiting ring is arranged inside the valve body. The rotating shaft is rotatably connected to the limiting ring. One end of the connecting rod is arranged on the rotating shaft. The sealing plate is arranged on the other end of the connecting rod, and the sealing plate blocks one end of the connecting pipe away from the shell. The adjusting assembly is arranged on the valve body, and is used to adjust the pressure when the sealing plate blocks the connecting pipe.

[0012] In some embodiments, the adjustment assembly includes a rotating rod and a counterweight, one end of the rotating rod passes through the valve body and is connected to the rotating shaft, and the counterweight is threadedly connected to one end of the rotating rod away from the rotating shaft.

[0013] In some embodiments, a buffer gasket is provided at one end of the sealing plate close to the connecting pipe.

[0014] In some embodiments, a flange is provided at one end of the water inlet pipe away from the shell and at one end of the water outlet pipe away from the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the overall structure of a low-noise check valve with a filtering mechanism provided in an embodiment of the present application;

[0017] Figure 2 A cross-sectional view of a filter mechanism of a low-noise check valve with a filter mechanism provided in an embodiment of the present application;

[0018] Figure 3 A cross-sectional view of a valve body mechanism of a low-noise check valve with a filtering mechanism provided in an embodiment of the present application;

[0019] Figure 4 A low-noise check valve with a filtering mechanism provided in an embodiment of the present application Figure 3 Enlarged view of part A.

[0020] Among them, the reference numerals in the figure are:

[0021] 11. Valve body; 131. Rotating rod; 132. Counterweight; 121. Rotating shaft; 122. Limiting ring; 123. Connecting rod; 124. Sealing plate; 125. Buffering gasket; 21. Shell; 22. Filter cartridge; 221. Connecting ring; 23. First sealing gasket; 24. Second sealing gasket; 25. Rotating handle; 3. Water inlet pipe; 4. Water outlet pipe; 5. Connecting pipe; 6. Flange. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0028] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Check valves are also called non-return valves. Their function is to prevent the medium in the pipeline from flowing back. The opening and closing parts are opened or closed automatically by the flow and force of the medium to prevent the medium from flowing back. Check valves belong to the automatic valve category. They are mainly used in pipelines where the medium flows in one direction. They only allow the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline.

[0030] The slow-closing check valve in the related art has the problem that the filter screen cannot be disassembled, and foreign matter may clog the filter screen and the water inlet after long-term use.

[0031] Based on this, in order to improve the problems in the related art, the embodiments of the present application provide the following solutions.

[0032] Please also read Figure 1 and Figure 4 The embodiment of the present application provides a low-noise check valve with a filtering mechanism, including a valve body mechanism, a filtering mechanism, a water inlet pipe 3, a water outlet pipe 4 and a connecting pipe 5. The filtering mechanism includes a shell 21 and a filter cartridge 22. Connecting holes are provided at both ends of the shell 21, and a water outlet is provided on the shell 21. The water inlet pipe 3 is connected to the shell 21 and communicates with the shell 21 through the connecting holes. Connecting rings 221 are provided at both ends of the filter cartridge 22, and threads are provided on the connecting rings 221. The filter cartridge 22 is arranged inside the shell 21. One end of the filter cartridge 22 is threadedly connected to the water inlet pipe 3 through the connecting ring 221, and the other end of the filter cartridge 22 is threadedly connected to the shell 21 through another connecting ring 221. One end of the connecting pipe 5 is communicated with the shell 21 through the water outlet, and the other end of the connecting pipe 5 is communicated with the valve body mechanism. The water outlet pipe 4 is arranged on the valve body mechanism, and the water outlet pipe 4 is communicated with the valve body mechanism.

[0033] A low-noise check valve with a filter mechanism provided in an embodiment of the present application is provided with an independent and detachable filter mechanism. When the check valve is in use, when the liquid flows into the valve through the water inlet pipe 3, it will first pass through the filter mechanism. When the liquid passes through the filter cartridge 22 in the filter mechanism, the filter cartridge 22 will filter out most of the impurities in the liquid. The filtered liquid can then enter the valve body mechanism through the connecting pipe 5, which can effectively prevent the impurities in the liquid from interfering with the normal operation of the valve body mechanism. After long-term use of the check valve, the filtering effect of the filter cartridge 22 decreases, and foreign matter will accumulate inside the filter mechanism. Since the filter cartridge 22 is connected to the filter mechanism housing 21 by threads, the filter cartridge 22 can be unscrewed at this time to clean the inside of the filter mechanism, and a new filter cartridge 22 can be replaced, ensuring that the check valve can work efficiently for a long time.

[0034] In some embodiments, please refer to Figure 1 and Figure 2 The filtering mechanism further includes a first sealing gasket 23 , which is disposed between the water inlet pipe 3 and the connecting ring 221 .

[0035] With such arrangement, the first sealing gasket 23 can enhance the tightness of the connection between the water inlet pipe 3 and the connecting ring 221 to prevent liquid leakage.

[0036] Optionally, in some embodiments, see Figure 1 and Figure 2 The filtering mechanism further includes a second sealing gasket 24 and a rotating handle 25 . The second sealing gasket 24 is disposed between the filter cartridge 22 and the housing 21 . The rotating handle 25 is disposed on an end of the filter cartridge 22 away from the water inlet pipe 3 .

[0037] In this configuration, the second sealing gasket 24 is used to enhance the tightness of the connection between the filter cartridge 22 and the housing 21, and the rotating handle 25 allows the user to disassemble and install the filter cartridge 22 more effortlessly, thereby facilitating the daily maintenance and repair of the check valve.

[0038] Optionally, see Figure 1 and Figure 3 The valve body mechanism includes a valve body 11, a blocking assembly and an adjusting assembly. The valve body 11 is connected to the shell 21 through a connecting pipe 5. The blocking assembly includes a rotating shaft 121, a limiting ring 122, a connecting rod 123 and a blocking plate 124. The limiting ring 122 is arranged inside the valve body 11. The rotating shaft 121 is rotatably connected to the limiting ring 122. One end of the connecting rod 123 is arranged on the rotating shaft 121. The blocking plate 124 is arranged on the other end of the connecting rod 123, and the blocking plate 124 blocks one end of the connecting pipe 5 away from the shell 21. The adjusting assembly is arranged on the valve body 11, and is used to adjust the pressure when the blocking plate 124 blocks the connecting pipe 5.

[0039] With such arrangement, when liquid enters the valve body 11 from the connecting pipe 5, the liquid pressure reaches a certain level and will break open the sealing plate 124. At this time, the sealing plate 124 drives the connecting rod 123 and the rotating shaft to rotate inside the valve body 11, and the check valve is in an open state; when the liquid pressure decreases or refluxes, the sealing plate 124 will be pressed against the pipe mouth of the connecting pipe 5 under the action of its own gravity and the reverse pressure of the liquid. At this time, the check valve is in a closed state, achieving the effect of preventing the liquid from flowing back; the adjusting component can be used to adjust the opening pressure of the sealing plate 124, so that the check valve is suitable for different occasions, and can also apply a certain pressure to the sealing plate 124 when the sealing plate 124 is closed, so as to enhance the sealing performance of the sealing plate 124.

[0040] In some embodiments, see Figures 1 to 4 The adjustment component includes a rotating rod 131 and a counterweight 132. One end of the rotating rod 131 passes through the valve body and is connected to the rotating shaft 121. The counterweight 132 is threadedly connected to the end of the rotating rod 131 away from the rotating shaft 121. The rotating rod 131 is L-shaped.

[0041] With such arrangement, when the opening pressure of the sealing plate 124 needs to be increased, the counterweight block 132 can be screwed up to increase the length of the lever arm. When the opening pressure of the sealing plate 124 needs to be reduced, the counterweight block 132 can be screwed down to reduce the length of the lever arm, thereby simplifying the adjustment process of the opening pressure of the sealing plate 124.

[0042] Optionally, in some embodiments, see Figures 1 to 4 A buffer gasket 125 is provided at one end of the sealing plate 124 close to the connecting pipe 5 .

[0043] With such arrangement, when the blocking plate 124 is suddenly closed quickly due to a large reverse pressure, the buffer gasket 125 can buffer the impact force when the blocking plate 124 contacts the connecting pipe 5, thereby protecting the blocking plate 124 and the pipe opening of the connecting pipe 5. At the same time, the buffer gasket 125 can also effectively reduce the noise generated when the blocking plate 124 collides with the connecting pipe 5, thereby achieving a silent effect.

[0044] Optionally, see Figures 1 to 3 A flange 6 is provided at one end of the water inlet pipe 3 away from the shell 21 and at one end of the water outlet pipe 4 away from the valve body 11 .

[0045] With such arrangement, the flange 6 facilitates the connection and removal of the check valve and the external pipeline.

[0046] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A low noise check valve with a filtering mechanism, characterized in that: The invention comprises a valve body mechanism, a filtering mechanism, a water inlet pipe (3), a water outlet pipe (4) and a connecting pipe (5); the filtering mechanism comprises a shell (21), a filter cartridge (22); connecting holes are provided at both ends of the shell (21); a water outlet is provided on the shell (21); the water inlet pipe (3) is connected to the shell (21) and communicates with the shell (21) through the connecting hole; connecting rings (221) are provided at both ends of the filter cartridge (22); threads are provided on the connecting rings (221); The filter cartridge (22) is arranged inside the housing (21); one end of the filter cartridge (22) is threadedly connected to the water inlet pipe (3) via a connecting ring (221); the other end of the filter cartridge (22) is threadedly connected to the housing (21) via another connecting ring (221); one end of the connecting pipe (5) is connected to the housing (21) via a water outlet; the other end of the connecting pipe (5) is connected to the valve body mechanism; the water outlet pipe (4) is arranged on the valve body mechanism, and the water outlet pipe (4) is connected to the valve body mechanism.

2. A low-noise check valve with a filtering mechanism according to claim 1, characterized in that: The filtering mechanism further comprises a first sealing gasket (23), wherein the first sealing gasket (23) is arranged between the water inlet pipe (3) and the connecting ring (221).

3. A low noise check valve with a filtering mechanism according to claim 2, characterized in that: The filtering mechanism further comprises a second sealing gasket (24) and a rotating handle (25), wherein the second sealing gasket (24) is arranged between the filter cartridge (22) and the housing (21), and the rotating handle (25) is arranged on an end of the filter cartridge (22) away from the water inlet pipe (3).

4. A low noise check valve with a filtering mechanism according to any one of claims 1 to 3, characterized in that: The valve body mechanism comprises a valve body (11), a blocking component and an adjusting component. The valve body (11) is connected to the shell (21) through a connecting pipe (5). The blocking component comprises a rotating shaft (121), a limiting ring (122), a connecting rod (123) and a blocking plate (124). The limiting ring (122) is arranged inside the valve body (11). The rotating shaft (121) is rotatably connected to the limiting ring (122). One end of the connecting rod (123) is arranged on the rotating shaft (121). The blocking plate (124) is arranged on the other end of the connecting rod (123). The blocking plate (124) blocks one end of the connecting pipe (5) away from the shell (21). The adjusting component is arranged on the valve body (11) and is used to adjust the pressure when the blocking plate (124) blocks the connecting pipe (5).

5. A low noise check valve with a filtering mechanism according to claim 4, characterized in that: The adjustment assembly comprises a rotating rod (131) and a counterweight (132), one end of the rotating rod (131) passes through the valve body and is connected to the rotating shaft (121), and the counterweight (132) is threadedly connected to an end of the rotating rod (131) away from the rotating shaft (121).

6. A low noise check valve with a filtering mechanism according to claim 5, characterized in that: A buffer gasket (125) is provided at one end of the blocking plate (124) close to the connecting pipe (5).

7. A low noise check valve with a filtering mechanism according to claim 6, characterized in that: The end of the water inlet pipe (3) away from the shell (21) and the end of the water outlet pipe (4) away from the valve body (11) are both provided with flanges (6).

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