Multifunctional pressure reducing valve

Abstract

The utility model relates to the technical field of pressure reducing valves, and discloses a multifunctional pressure reducing valve. The multifunctional pressure reducing valve comprises a valve shell and a pressure reducing valve element assembly, a water inlet flow channel, a water outlet flow channel and a valve cavity are formed in the valve shell, the valve cavity is communicated with the water inlet flow channel and the water outlet flow channel, the pressure reducing valve element assembly is arranged in the valve cavity, a filtering cavity is further formed in the valve shell and communicated with the water inlet flow channel in an intersecting mode, and the multifunctional pressure reducing valve further comprises a filtering net. The filter screen is detachably arranged in the filter cavity, a water inlet opening is formed in the side face of the filter screen, and the water inlet opening is opposite to the water inlet end of the water inlet runner. The filter cavity is formed in the water inlet flow channel, the filter screen can be arranged on the upstream portion of the pressure reducing valve element assembly, impurities are prevented from blocking the pressure reducing valve element assembly, and therefore the pressure reducing valve element assembly can be effectively protected, when the filter screen needs to be cleaned, the filter screen can be detached and pulled out of the filter cavity, cleaning and maintenance are convenient, and dismounting and mounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, in particular to a multifunctional pressure reducing valve. Background Art

[0002] A pressure reducing valve is a valve that reduces inlet pressure to a desired outlet pressure through regulation, automatically maintaining a stable outlet pressure by relying on the energy of the medium itself. A pressure reducing valve typically consists of a valve body and a pressure reducing valve core assembly. The valve body contains a valve cavity, and the pressure reducing valve core assembly is installed within the valve cavity to reduce and stabilize pressure.

[0003] The medium flowing through a pressure reducing valve will contain certain impurities, so a filter is usually installed inside the valve. However, in existing pressure reducing valves, the filter is usually installed within the valve cavity and mounted outside the valve disc of the pressure reducing valve core assembly, filtering impurities as the medium flows through the valve disc of the pressure reducing valve core assembly. This arrangement leads to problems such as inconvenient filter installation and the inability to remove the filter for cleaning and maintenance. Moreover, because the filter is mounted outside the pressure reducing valve core assembly, impurities frequently clog the pressure reducing valve core assembly in actual use, causing the pressure reducing and regulating functions to fail.

[0004] Therefore, there is an urgent need to provide a multifunctional pressure reducing valve to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional pressure reducing valve, wherein the filter screen is easy to disassemble and maintain, and the filter screen is placed upstream of the pressure reducing valve core assembly, which can effectively protect the pressure reducing valve core assembly.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A multifunctional pressure-reducing valve comprises a valve housing and a pressure-reducing valve core assembly, wherein the valve housing is provided with an inlet channel, an outlet channel and a valve chamber, wherein the valve chamber is respectively connected with the inlet channel and the outlet channel, and the pressure-reducing valve core assembly is arranged in the valve chamber, and the valve housing is also provided with a filter chamber, wherein the filter chamber intersects and connects with the inlet channel, and the multifunctional pressure-reducing valve further comprises a filter screen, wherein the filter screen is detachably arranged in the filter chamber, and a water inlet opening is arranged on the side of the filter screen, and the water inlet opening is arranged opposite to the water inlet end of the inlet channel.

[0008] As an optional solution, the filter screen includes a filter screen body, a first injection molded reinforcement rib and a second injection molded reinforcement rib respectively connected to the axial ends of the filter screen body, and a third injection molded reinforcement rib connected to the circumferential side of the filter screen body, and the water inlet opening is opened on the third injection molded reinforcement rib.

[0009] As an optional solution, the third injection-molded reinforcement rib is in contact with the side wall of the filter cavity, and a gap is provided between the filter body and the side wall of the filter cavity.

[0010] As an optional solution, one of the filter screen and the valve housing is provided with a positioning protrusion, and the other is provided with a positioning groove that matches the positioning protrusion.

[0011] As an optional solution, the water inlet channel is connected to the water inlet opening, and one end of the water inlet channel connected to the water inlet opening is a docking interface, and the water inlet opening is adapted to the docking interface.

[0012] As an optional solution, the filter chamber includes a protruding section, an intermediate section and a groove section that are connected in sequence, the protruding section is arranged to protrude from the water inlet channel, the intermediate section is directly connected to the water inlet channel, the groove section is arranged on the inner wall of the water inlet channel, and the bottom of the groove section is a plane, and one end of the filter mesh is in contact with the plane.

[0013] As an optional solution, one end of the protruding section protruding from the water inlet channel is detachably connected to an end cap, and the end cap seals the filter screen in the filter cavity.

[0014] As an optional solution, the side wall of the valve cavity is provided with a first extension wall at the junction with the water inlet channel, and the first extension wall partially closes the water inlet channel. A water flow groove connected to the valve cavity is provided on the inner side wall of the water inlet channel opposite to the free end of the first extension wall.

[0015] As an optional solution, the water flow channel is connected to the middle section and the groove section at the same time.

[0016] As an optional solution, the multifunctional pressure reducing valve also includes a magnetic locking assembly that can be coaxially linked with the pressure reducing valve core assembly. The magnetic locking assembly can switch from a locked state to an unlocked state under the action of an external magnetic force, and in the unlocked state, the magnetic locking assembly can drive the pressure reducing valve core assembly to move along its axial direction to achieve fluid conduction or cutoff.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a multifunctional pressure reducing valve, in which the medium flows into the valve cavity from the water inlet channel and then flows out through the water outlet channel. During the flow of the medium, the pressure reducing valve core assembly in the valve cavity plays a role in reducing pressure and stabilizing pressure. When the medium flows in from the water inlet channel, it first enters the filter screen through the water inlet opening. The filter screen filters and blocks the particulate impurities in the medium, so that the impurities remain inside the filter screen, avoiding impurities from clogging the pipe. When the filter screen needs to be cleaned, the filter screen can be removed and pulled out from the filter cavity, which is convenient for cleaning and maintenance, and easy to disassemble and assemble. By setting the filter cavity at the water inlet channel, the filter screen can be placed upstream of the pressure reducing valve core assembly to avoid impurities clogging the pressure reducing valve core assembly, thereby effectively protecting the pressure reducing valve core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly and easily, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. The drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a multifunctional pressure reducing valve provided in Example 1 of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the first embodiment of the present invention in the locked state. Figure 1 ;

[0022] Figure 3 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the first embodiment of the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic structural diagram of the filter screen provided in Example 1 of the present utility model;

[0024] Figure 5 This is a structural diagram of the main valve body provided in the first embodiment of the present utility model;

[0025] Figure 6 This is an isometric cross-sectional view of the main valve body provided in the first embodiment of the present invention. Figure 1 ;

[0026] Figure 7 This is an isometric cross-sectional view of the main valve body provided in the first embodiment of the present invention. Figure 2 ;

[0027] Figure 8 This is a cross-sectional view of a valve body provided in Example 1 of the present utility model;

[0028] Figure 9This is a cross-sectional view of another valve body provided in Example 1 of the present utility model;

[0029] Figure 10 yes Figure 2 A partial enlarged view of point A in the middle;

[0030] Figure 11 This is a structural diagram of one of the abutment members provided in the first embodiment of the present utility model;

[0031] Figure 12 This is a structural diagram of another abutment member provided in the first embodiment of the present utility model;

[0032] Figure 13 This is a schematic diagram of the structure of the pressure reducing valve core assembly and the partial magnetic locking assembly provided in the first embodiment of the present invention;

[0033] Figure 14 yes Figure 2 A partial enlarged view of point B in the middle;

[0034] Figure 15 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the second embodiment of the present utility model in a locked state;

[0035] Figure 16 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the third embodiment of the present invention in a locked state;

[0036] Figure 17 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the fourth embodiment of the present utility model in a locked state;

[0037] Figure 18 This is a cross-sectional view of the multifunctional pressure reducing valve provided in the fifth embodiment of the present utility model in a locked state.

[0038] In the picture:

[0039] 10. Valve housing; 11. Valve chamber; 111. Water hole; 12. Main valve body; 121. Water inlet channel; 1211. Docking port; 1212. Water inlet; 122. Water outlet channel; 1221. Water outlet; 123. Filter chamber; 1231. Protruding section; 1232. Middle section; 1233. Grooved section; 1234. Plane; 124. Inspection hole; 125. Positioning groove; 126. First extension wall; 127. Second extension wall; 128. Water flow channel; 1281. First side wall; 1282. Second side wall; 13. Upper valve cover; 14. Lower valve cover; 15. End cover; 16. Plug; 17. Gland;

[0040] 20. Pressure reducing valve core assembly; 21. Pressure reducing valve stem; 211. Core stem; 212. Baffle; 213. Second raised portion; 214. Accommodation groove; 22. Valve disc; 221. Base; 222. First raised portion; 223. Second stepped surface; 23. Sealing gasket; 24. Buffer spring; 25. Pressure reducing spring; 26. Limiting member; 261. Connecting portion; 262. Third raised portion; 263. Third stepped surface;

[0041] 30. Magnetic locking assembly; 31. Valve cover sleeve; 311. Second locking hole; 32. Locking valve stem; 33. Connector; 331. First locking hole; 34. Press sleeve; 341. Sleeve body; 342. Annular mating portion; 343. First stepped surface; 35. Magnetic latch; 36. Spring; 37. Abutment; 371. Sphere; 372. Ball head; 373. Stem; 374. Abutment surface; 38. Magnetic connector; 381. Connector body; 382. Magnet; 391. Magnetic column; 392. Latch;

[0042] 40. Filter screen; 41. Water inlet opening; 42. First injection-molded reinforcing rib; 43. Second injection-molded reinforcing rib; 44. Third injection-molded reinforcing rib; 45. Positioning protrusion; 46. Filter screen body;

[0043] 50. Check valve assembly; 51. Check valve body; 511. Water outlet; 512. Guide protrusion; 52. Check valve core; 521. Valve core body; 522. Check valve stem; 53. Return spring;

[0044] 60. Telescopic tube. DETAILED DESCRIPTION

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0046] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0048] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0049] Example 1

[0050] This embodiment provides a multifunctional pressure reducing valve for use in water supply pipes. Figure 1 and Figure 2 As shown, the multifunctional pressure reducing valve includes a valve housing 10 and a pressure reducing valve core assembly 20. The valve housing 10 is provided with an inlet flow channel 121, an outlet flow channel 122, and a valve cavity 11. The inlet flow channel 121 and the outlet flow channel 122 are respectively used to connect to external pipelines. The valve cavity 11 is connected to the inlet flow channel 121 and the outlet flow channel 122, respectively. The pressure reducing valve core assembly 20 is disposed in the valve cavity 11. The valve housing 10 includes a main valve body 12, an upper valve cover 13, and a lower valve cover 14. The inlet flow channel 121 and the outlet flow channel 122 are disposed in the main valve body 12. The upper valve cover 13 and the lower valve cover 14 are respectively threadedly connected to the upper and lower ends of the main valve body 12, thereby forming a closed valve cavity 11. In actual use, the medium flows into the valve cavity 11 through the water inlet channel 121 and then flows out through the water outlet channel 122. During the flow of the medium, the pressure reducing valve core assembly 20 in the valve cavity 11 plays a role in reducing and stabilizing pressure.

[0051] like Figures 2 to 5As shown, the main valve body 12 of the valve housing 10 further includes a filter chamber 123, which intersects and communicates with the water inlet channel 121. The multifunctional pressure reducing valve also includes a filter screen 40, which is cylindrical and removably mounted within the filter chamber 123. A water inlet opening 41 is provided on the side of the filter screen 40, which is positioned opposite the water inlet end of the water inlet channel 121. When medium flows into the water inlet channel 121, it first enters the filter screen 40 through the water inlet opening 41. The filter screen 40 filters and blocks particulate impurities in the medium, trapping them within the filter screen 40 and preventing them from clogging the pipe. When the filter screen 40 needs to be cleaned, it can be removed from the filter chamber 123, making it easy to clean and maintain, and convenient to assemble and disassemble. By positioning the filter chamber 123 within the water inlet channel 121, the filter screen 40 can be placed upstream of the pressure reducing valve core assembly 20, preventing impurities from clogging the pressure reducing valve core assembly 20 and effectively protecting the pressure reducing valve core assembly 20.

[0052] In an optional embodiment, if Figure 4 As shown, the filter 40 includes a filter body 46, a first injection-molded reinforcing rib 42 and a second injection-molded reinforcing rib 43 connected to the axial ends of the filter body 46, and a third injection-molded reinforcing rib 44 connected to the circumference of the filter body 46. The water inlet opening 41 is provided on the third injection-molded reinforcing rib 44, and the entire filter 40 is injection-molded in one piece. This arrangement can enhance the strength of the filter 40 and prevent the filter 40 from deformation and failure due to water hammer or impact from large particles of impurities. The first injection-molded reinforcing rib 42 covers one end of the filter body 46, thereby enclosing one end of the filter 40. The first injection-molded reinforcing rib 42 is connected to the third injection-molded reinforcing rib 44, thereby enhancing the strength of the filter 40. The second injection-molded reinforcing rib 43 is annular, thereby opening the other end of the filter 40. The closed end of the filter 40 faces the interior of the filter cavity 123, while the open end of the filter 40 faces the exterior of the filter cavity 123.

[0053] In an optional embodiment, the third injection-molded reinforcement rib 44 is in contact with the side wall of the filter cavity 123, and a gap exists between the filter body 46 and the side wall of the filter cavity 123. Figure 4As shown, since the thickness of the first, second, and third injection-molded reinforcing ribs 42, 43, and 44 is thicker than that of the filter body 46, the outer sidewalls of the first, second, and third injection-molded reinforcing ribs 42, 43, and 44 all protrude from the outer sidewall of the filter body 46. Therefore, during actual installation, the first, second, and third injection-molded reinforcing ribs 42, 43, and 44 all fit in contact with the sidewalls of the filter cavity 123, creating a gap between the filter body 46 and the sidewalls of the filter cavity 123. This arrangement prevents the filter body 46 from being obstructed by the sidewalls of the filter cavity 123 after fitting therewith, thereby ensuring the effective filtering area of ​​the filter body 46.

[0054] In an optional embodiment, if Figure 4 and Figure 5 As shown, a positioning protrusion 45 is provided on the second injection-molded reinforcement rib 43 of the filter 40, and a positioning groove 125 is provided on the valve housing 10 at the open end of the filter chamber 123. The positioning protrusion 45 and the positioning groove 125 are plugged into and fit together. Through the cooperation of the positioning protrusion 45 and the positioning groove 125, on the one hand, it can ensure that the filter 40 is oriented and installed in the filter chamber 123, so that the water inlet opening 41 of the filter 40 is always opposite the water inlet end of the water inlet channel 121, preventing the user from installing it incorrectly and causing quality problems; on the other hand, it can also prevent the filter 40 from rotating or shifting due to the erosion of the water flow during operation. The number of positioning protrusions 45 and positioning grooves 125 can be one, two, or more, and can be flexibly set according to actual needs, and is not specifically limited here. In another optional embodiment, the positioning groove 125 is provided on the second injection-molded reinforcement rib 43, and the positioning protrusion 45 is provided at the open end of the filter chamber 123, which can also achieve the above effect.

[0055] In an optional embodiment, if Figure 2 、 Figure 4 and Figure 6 As shown, the water inlet channel 121 is connected to the water inlet opening 41, and the end of the water inlet channel 121 that connects to the water inlet opening 41 is a docking port 1211. The water inlet opening 41 is adapted to the docking port 1211. In other words, the size of the water inlet opening 41 and the docking port 1211 match each other, ensuring that all water flowing through the docking port 1211 can pass through the water inlet opening 41 and enter the filter 40 for filtration, thereby ensuring the water output.

[0056] In an optional embodiment, if Figure 6As shown, the filter cavity 123 includes a protruding section 1231, an intermediate section 1232, and a groove section 1233, which are sequentially connected. The protruding section 1231 protrudes from the water inlet channel 121, the intermediate section 1232 is directly connected to the water inlet channel 121, and the groove section 1233 is provided on the inner wall of the water inlet channel 121. The bottom of the groove section 1233 is a flat surface 1234. The first injection-molded reinforcement rib 42 of the filter screen 40 abuts against the flat surface 1234. During installation, the filter screen 40 is pushed into the filter cavity 123 through the opening of the protruding section 1231, so that the first injection-molded reinforcement rib 42 abuts against the flat surface 1234 of the groove section 1233, and the positioning protrusion 45 is inserted into the positioning groove 125, thereby ensuring the stability of the installation of the filter screen 40.

[0057] In an optional embodiment, if Figure 1 、 Figure 3 and Figure 6 As shown, the end of the protruding section 1231 that protrudes from the water inlet channel 121 is detachably connected to an end cap 15. This end cap 15 seals the filter screen 40 within the filter cavity 123. The end cap 15 is threadedly secured to the opening of the protruding section 1231. In other words, the flat surface 1234 of the recessed section 1233 and the end cap 15 cooperate to secure the filter screen 40 within the filter cavity 123, ensuring the secure fit of the filter screen 40. To clean the filter screen 40, the end cap 15 is first removed, and then the filter screen 40 is removed from the filter cavity 123, facilitating installation, removal, and maintenance of the filter screen 40.

[0058] In an optional embodiment, if Figure 5 As shown, the axis of the filter chamber 123 is preferably perpendicular to the axis of the water inlet channel 121. In actual design, the opening of the filter chamber 123 can be set on the front of the main valve body 12, thereby improving the maintenance efficiency of the filter screen 40 under complex working conditions.

[0059] In an optional embodiment, if Figure 8 As shown, the main valve body 12 is a Y-shaped valve body, that is, the water inlet channel 121 and the water outlet channel 122 are respectively located on both sides of the circumference of the valve cavity 11, and the water inlet channel 121 and the water outlet channel 122 are arranged in parallel, preferably located on the same straight line, and the valve cavity 11 is inclined relative to the water inlet channel 121 and the water outlet channel 122, and the valve cavity 11 is inclined toward one side of the water outlet channel 122.

[0060] like Figure 7 and Figure 8As shown, the side wall of the valve cavity 11 is provided with a first extension wall 126 at the junction with the water inlet channel 121, and the first extension wall 126 partially closes the water inlet channel 121, and the part of one end of the water inlet channel 121 not closed by the first extension wall 126 is the water inlet 1212; the side wall of the valve cavity 11 is provided with a second extension wall 127 at the junction with the water outlet channel 122, and the second extension wall 127 partially closes the water outlet channel 122, and the part of one end of the water outlet channel 122 not closed by the second extension wall 127 is the water outlet 1221. The first extension wall 126 and the second extension wall 127 are staggered, so that the water inlet 1212 and the water outlet 1221 are staggered. In this embodiment, the first extension wall 126 is arranged downward and the second extension wall 127 is arranged upward, so that the water inlet 1212 is at the bottom and the water outlet 1221 is at the top. This arrangement allows the fluid to flow from the water inlet 1212 into the valve cavity 11, then flow from the bottom to the top, and then flow out through the water outlet 1221. During the process of flowing from the bottom to the top, the fluid can pass through the valve disc 22 of the pressure-reducing valve core assembly 20 in the valve cavity 11, thereby achieving the pressure reduction and stabilization function. In other embodiments, the first extension wall 126 is arranged upward and the second extension wall 127 is arranged downward, so that the fluid flows from the top to the bottom, which can also achieve the above effect.

[0061] For the above-mentioned Y-shaped main valve body 12, the second extension wall 127 has a smaller closed area for the water outlet channel 122, and the first extension wall 126 has a larger closed area for the water inlet channel 121. Therefore, the gap at the water inlet 1212 is smaller, and the flow rate there will also be smaller, which will cause the flow rate of the pressure reducing valve to be greatly affected.

[0062] In order to solve the above problem, in an optional embodiment, as Figure 7 and Figure 8 As shown, a water flow groove 128 is provided on the inner side wall of the water inlet channel 121 opposite the free end of the first extension wall 126, which is connected to the valve cavity 11. During normal operation, the fluid flows into the valve cavity 11 through the water inlet channel 121 and the water inlet 1212 in sequence, and then flows out through the water outlet 1221 and the water outlet channel 122 in sequence. Therefore, by providing the water flow groove 128, the water flow area at the junction of the valve cavity 11 and the water inlet channel 121, that is, the water flow area at the water inlet 1212, can be increased, thereby increasing the water inlet flow rate and meeting the high-flow application requirements of the pressure reducing valve.

[0063] In an optional embodiment, if Figure 2 、 Figure 6 and Figure 7As shown, the water trough 128 is connected to both the middle section 1232 and the groove section 1233. This arrangement creates a large gap and space between the periphery of the filter screen 40 and the inner wall of the filter cavity 123, effectively increasing the flow area of ​​the filter screen 40, increasing the flow rate, and improving the filtering capacity.

[0064] In another optional implementation, Figure 9 As shown, the main valve body 12 can also be a T-shaped valve body, that is, the water inlet channel 121 and the water outlet channel 122 are respectively located on both sides of the circumference of the valve cavity 11, and the water inlet channel 121 and the water outlet channel 122 are arranged in parallel, preferably located on the same straight line, and the valve cavity 11 is perpendicular to the water inlet channel 121 and the water outlet channel 122.

[0065] In an optional embodiment, a water flow groove 128 communicating with the valve cavity 11 may also be provided on the inner side wall of the water outlet channel 122 directly opposite the free end of the second extension wall 127. This arrangement can simultaneously increase the water inlet flow rate at the water inlet 1212 and the water outlet flow rate at the water outlet 1221, thereby further increasing the flow rate of the pressure reducing valve.

[0066] In an optional embodiment, if Figure 7 and Figure 8 As shown, the water trough 128 includes a first sidewall 1281 extending along its circumference and a second sidewall 1282 connected to one axial end of the first sidewall 1281. To machine the water trough 128, the main valve body 12 is first tilted and clamped using a fixture. The cutter head is then inserted through the water inlet channel 121 into the valve cavity 11 for machining. As the water inlet channel 121 approaches the valve cavity 11, the first sidewall 1281 is tilted away from the axis of the water inlet channel 121. This arrangement facilitates machining of the water trough 128 and also helps increase the water flow area.

[0067] In an optional embodiment, if Figure 7 As shown, the first side wall 1281 is an arc-shaped surface. This arrangement can facilitate the processing of the first side wall 1281, and this type of water trough 128 is more economical and has a lower processing cost.

[0068] In an optional embodiment, if Figure 2As shown, the valve chamber 11 is provided with a water hole 111 for connecting the water inlet channel 121 and the water outlet channel 122. The multifunctional pressure reducing valve also includes a magnetic locking assembly 30 that can be coaxially linked with the pressure reducing valve core assembly 20. The magnetic locking assembly 30 can be switched from a locked state to an unlocked state under the action of an external magnetic force. In the unlocked state, the magnetic locking assembly 30 can drive the pressure reducing valve core assembly 20 to move along its axial direction, so that the pressure reducing valve core assembly 20 can seal and close or open the water hole 111 to achieve fluid conduction or cutoff, thereby closing or opening the pressure reducing valve. By providing the magnetic locking assembly 30, the pressure reducing valve core assembly 20 also has a cutoff function, and can also improve the anti-theft effect of the pressure reducing valve.

[0069] In an optional embodiment, if Figure 2 and Figure 10 As shown, the magnetic locking assembly 30 includes a valve cover sleeve 31, a locking valve stem 32, a connecting piece 33 and a pressing sleeve 34. The valve cover sleeve 31 is rotatably connected to the outside of the upper valve cover 13, and the connecting piece 33 is arranged in the valve cover sleeve 31. One end of the locking valve stem 32 passes through the upper valve cover 13 and cooperates with the connecting piece 33 and can rotate synchronously. The other end of the locking valve stem 32 is threadedly connected to the pressing sleeve 34. The pressing sleeve 34 is fixedly arranged in the upper valve cover 13 and is connected to the pressure reducing valve core assembly 20 in a circumferential direction; a first locking hole 331 is opened on the side surface of the connecting piece 33 facing the valve cover sleeve 31, and the valve cover sleeve 31 faces A second locking hole 311 is defined on one side of the connector 33, which mates with the first locking hole 331. The magnetic locking assembly 30 also includes a magnetic latch 35, a spring 36, and an abutment 37. The magnetic latch 35 is positioned within the second locking hole 311, while the spring 36 and abutment 37 are positioned within the first locking hole 331. The abutment 37 is positioned adjacent to the opening of the first locking hole 331 and compresses the spring 36. The diameter of the magnetic latch 35 is smaller than that of the first locking hole 331, ensuring that the magnetic latch 35 can be inserted into the first locking hole 331 while the abutment 37 does not fit into the second locking hole 311. In the locked state, the abutment 37 confines the magnetic latch 35 within the second locking hole 311, allowing the valve cover sleeve 31 to rotate freely. In the unlocked state, the magnetic latch 35 can be inserted into the first locking hole 331 under the action of an external magnetic force, thereby simultaneously connecting the valve cover sleeve 31 and the connector 33.

[0070] When in the locked state, that is, when there is no external magnetic force, under the action of the spring 36, the abutment 37 blocks the magnetic latch 35 upward in the second lock hole 311, and the magnetic latch 35 will not enter the first lock hole 331, and the abutment 37 will not be embedded in the second lock hole 311. At this time, the valve cover sleeve 31 and the connecting member 33 are disconnected, so the valve cover sleeve 31 can only rotate idly, and the connecting member 33 and the locking valve stem 32 will not rotate with it, effectively avoiding damage and failure of the magnetic locking assembly 30 due to violent rotation, thereby enhancing the anti-theft performance. When the pressure reducing valve needs to be unlocked, an external magnetic repulsive force is applied. Under the action of this magnetic repulsive force, the magnetic latch 35 overcomes the elastic force of the spring 36 and is inserted into the first locking hole 331. The valve cover sleeve 31 and the connecting member 33 form a rotation-restricted connection via the magnetic latch 35. At this time, the valve cover sleeve 31, the connecting member 33, and the locking valve stem 32 are in a coordinated state and can rotate synchronously. By rotating the valve cover sleeve 31, the connecting member 33 and the locking valve stem 32 can be driven to rotate synchronously. As the locking valve stem 32 rotates, the pressing sleeve 34 moves upward or downward along the thread. The pressing sleeve 34 then pushes the pressure reducing valve core assembly 20 upward or downward along its axial direction, thereby sealing or opening the water flow hole 111, thereby blocking or allowing the fluid to flow, thereby opening or closing the pressure reducing valve. When the external magnetic repulsive force is removed, the valve cover sleeve 31 returns to the idle state.

[0071] However, in the prior art, the magnetic latch 35 and the abutment 37 are usually configured as cylindrical latches. During the actual assembly process of the valve cover sleeve 31 and the connecting member 33, if there is a gap between the relative end faces of the two, during the idling of the valve cover sleeve 31, the cylindrical abutment 37 will push upward to the lower end face of the valve cover sleeve 31, and the cylindrical magnetic latch 35 will fall to the upper end face of the connecting member 33, which will cause the magnetic latch 35 and the abutment 37 to overlap, resulting in the abutment 37 and the magnetic latch 35 blocking each other when the valve cover sleeve 31 rotates, resulting in product jamming, and thus the free idling of the valve cover sleeve 31 cannot be achieved.

[0072] In order to solve the above problem, in an optional embodiment, as Figure 10As shown, the abutment member 37 is a whole sphere 371. The diameter of the whole sphere 371 is larger than the aperture of the second locking hole 311 above it. Therefore, the whole sphere 371 can block the magnetic latch 35 in the second locking hole 311 under the action of the spring 36, but the whole sphere 371 will not completely enter the second locking hole 311. When there is a small gap between the two opposite end faces of the valve cover sleeve 31 and the connecting member 33, during the idling of the valve cover sleeve 31, once the first locking hole 331 and the second locking hole 311 are not aligned, the whole sphere 371 will be pushed upward to the lower end face of the valve cover sleeve 31 under the action of the spring 36, and the magnetic latch 35 will fall to the upper end face of the connecting member 33 under the action of gravity. The magnetic latch 35 and the whole sphere 371 have an overlapping portion. Therefore, when the valve cover sleeve 31 rotates relative to the connecting member 33 until the magnetic latch 35 contacts the whole sphere 371, the magnetic latch 35 The edge of the end is in contact with the spherical surface of the whole sphere 371. As the external force drives the valve cover sleeve 31 to rotate, the edge of the magnetic latch 35 will slide smoothly along the spherical surface, and during the sliding process, the two exert thrust on each other, that is, the magnetic latch 35 pushes the whole sphere 371 into the first locking hole 331, and at the same time, the whole sphere 371 pushes the magnetic latch 35 into the second locking hole 311, so that the magnetic latch 35 and the whole sphere 371 avoid each other, so that the rotation of the valve cover sleeve 31 will not be blocked here, thereby achieving the effect of smooth and unobstructed operation of the valve cover sleeve 31 when idling.

[0073] In order to solve the above problem, in another optional embodiment, the magnetic latch 35 is a cylindrical latch, such as Figure 11 As shown, the abutment member 37 is a round-headed latch. Specifically, the abutment member 37 comprises a connected rod portion 373 and a ball head portion 372. The ball head portion 372 is positioned toward the magnetic latch 35. Specifically, the end of the abutment member 37 facing the magnetic latch 35 is the ball head portion 372. The spherical surface of the ball head portion 372 abuts against the magnetic latch 35, allowing the magnetic latch 35 to slide along the spherical surface. In an alternative embodiment, the ball head portion 372 can be fully spherical or hemispherical.

[0074] When there is a slight gap between the two opposite end faces of the valve cover sleeve 31 and the connecting member 33, during the idling of the valve cover sleeve 31, once the first locking hole 331 and the second locking hole 311 are not aligned, the abutment 37 will be pushed upward to the lower end face of the valve cover sleeve 31 under the action of the spring 36, and the magnetic latch 35 will fall to the upper end face of the connecting member 33 under the action of gravity. The magnetic latch 35 will overlap with the ball head 372 of the abutment 37, so when the valve cover sleeve 31 rotates relative to the connecting member 33 until the magnetic latch 35 and the ball head 372 are aligned, the valve cover sleeve 31 will rotate relative to the connecting member 33 until the magnetic latch 35 and the ball head 372 are aligned. When the valve cover sleeve 31 contacts the contact portion 372, the edge of the end of the magnetic latch 35 contacts the spherical surface of the ball head 372. As the valve cover sleeve 31 rotates due to external force, the edge of the magnetic latch 35 slides smoothly along the spherical surface. During this sliding process, the two exert a thrust on each other, namely, the magnetic latch 35 pushes the abutment 37 into the first locking hole 331, and the abutment 37 simultaneously pushes the magnetic latch 35 into the second locking hole 311. This causes the magnetic latch 35 and the abutment 37 to avoid each other, preventing the rotation of the valve cover sleeve 31 from being blocked at this point. In addition, during installation, the abutment 37 needs to be placed on the spring 36 in the first locking hole 331, with at least a portion of the rod 373 inserted into the first locking hole 331. Therefore, compared to the entire sphere 371, this structural form of the abutment 37 is less likely to disengage from the spring 36. Therefore, the magnetic locking assembly 30 not only achieves smooth and unobstructed idling, but also improves assembly efficiency.

[0075] In another optional embodiment, the abutment 37 is a cylindrical latch, and the magnetic latch 35 is a rounded latch. That is, the end of the magnetic latch 35 facing the abutment 37 is provided with a ball head 372. In another optional embodiment, both the magnetic latch 35 and the abutment 37 are rounded latches. That is, the opposing ends of the magnetic latch 35 and the abutment 37 are provided with ball heads 372. Both of these configurations can achieve the aforementioned smooth, unobstructed idling and improved assembly efficiency, and will not be further elaborated here.

[0076] In an optional embodiment, when the abutment member 37 is a round head latch, as shown in FIG. Figure 11As shown, the stem 373 is cylindrical, the ball head 372 is hemispherical, the stem 373 and the ball head 372 are coaxial, and the diameter of the ball head 372 is larger than the diameter of the stem 373, thereby forming an abutment surface 374 at the intersection of the ball head 372 and the stem 373. The spring 36 is sleeved on the stem 373, with one end of the spring 36 abutting the abutment surface 374 and the other end abutting the bottom wall of the first locking hole 331. This arrangement allows a portion of the spring 36 to be sleeved on the stem 373, while the length of the portion of the spring 36 located below the stem 373 and between the bottom wall of the first locking hole 331 is correspondingly shortened, thereby reducing the design height of the connecting member 33 and the valve cover sleeve 31, and correspondingly reducing the height of the entire pressure reducing valve, which is beneficial to reducing product cost and installation. Secondly, when installing the abutment member 37 , the rod portion 373 is directly inserted into the spring 36 , so that the abutment member 37 is less likely to fall off from the spring 36 , thereby improving assembly efficiency.

[0077] In another optional embodiment, when the abutment member 37 is a round head latch, as shown in FIG. Figure 14 As shown, the diameter of the ball head 372 is equal to the diameter of the rod 373. One end of the spring 36 abuts against the end surface of the rod 373 facing away from the ball head 372, and the other end of the spring 36 abuts against the bottom wall of the first locking hole 331. This arrangement can also ensure smooth and unobstructed idling of the valve cover sleeve 31 and improve assembly efficiency, which will not be further described here.

[0078] In an optional embodiment, if Figure 10 As shown, the length of the magnetic latch 35 is equal to or slightly less than the depth of the second locking hole 311. It should be noted that the length of the magnetic latch 35 being slightly less than the depth of the second locking hole 311 means that, in the absence of external magnetic force, when the abutment 37, under the action of the spring 36, seals the magnetic latch 35 within the second locking hole 311, the end of the magnetic latch 35 that contacts the abutment 37 is a certain distance from the opening of the second locking hole 311. This height ensures that only a small portion of the entire sphere 371 or the ball head 372 is located within the second locking hole 311, rather than being completely embedded therein. This ensures that the valve cover sleeve 31 can rotate freely. During the process of free rotation of the valve cover sleeve 31, the entire sphere 371 or the ball head 372 can easily slide out of the second locking hole 311, preventing free rotation from being obstructed. Therefore, by limiting the length of the magnetic latch 35, the valve cover sleeve 31 can rotate freely and unimpeded when in the locked state.

[0079] In another optional embodiment, the outer diameter of the abutment 37 is larger than the aperture of the second locking hole 311. This arrangement can also ensure that the abutment 37 will not be inserted into the second locking hole 311 in the locked state, thereby achieving the idling of the valve cover sleeve 31. Therefore, by limiting the outer diameter of the abutment 37, it can also ensure that the valve cover sleeve 31 is idling and unobstructed in the locked state. It should be noted that in this embodiment, when the abutment 37 is Figure 10 When the abutment 37 is a cylindrical bolt, the outer diameter of the abutment 37 is the diameter of the cylindrical bolt; when the abutment 37 is a cylindrical bolt, the outer diameter of the abutment 37 is the diameter of the cylindrical bolt; Figure 11 In the structure shown in , the outer diameter of the abutment member 37 refers to the diameter of the ball head 372 at the abutment surface 374, as long as the ball head 372 is not completely embedded in the second lock hole 311; and when the abutment member 37 is Figure 12 In the structure shown in , the outer diameter of the abutment member 37 refers to the diameter of the intersection of the ball head 372 and the rod 373, that is, the diameter of the rod 373, so the ball head 372 will not be completely embedded in the second locking hole 311.

[0080] In an optional embodiment, to provide external magnetic force to the magnetic latch 35, the multifunctional pressure reducing valve further includes a key (not shown) that can be sleeved onto the valve cover sleeve 31 and unlock the magnetic locking assembly 30. A magnet corresponding to the position of the magnetic latch 35 is embedded in the lower end surface of the key, and the polarity of the magnet and the magnetic latch 35 are the same on the opposite side. A protrusion is provided at the upper end of the valve cover sleeve 31, and a mating cavity is provided at the center of the lower end surface of the key to mate with the protrusion. The mating cavity and the protrusion are engaged with each other to achieve a rotationally restricted connection and installation positioning between the key and the valve cover sleeve 31. When the key is installed on the valve cover sleeve 31, it not only drives the valve cover sleeve 31 to rotate, but also ensures that the magnet and the magnetic latch 35 are aligned.

[0081] Combine Figure 2 and Figure 10When the pressure reducing valve needs to be unlocked, the key is installed on the valve cover sleeve 31. If the magnetic latch 35 is not in the upper position of the abutment 37, the valve cover sleeve 31 in the idle state can be rotated by the key. When the magnetic latch 35 is rotated to the upper position of the abutment 37, the magnetic repulsive force between the magnet in the key and the magnetic latch 35 is greater than the elastic force of the spring 36. Therefore, under the action of the magnet, the magnetic latch 35 moves axially downward along the second lock hole 311 and embeds into the first lock hole 331, producing a lock on the abutment 37 that fits therewith. The key generates a force, causing the spring 36 to compress and deform to reset the valve cover. At this point, the valve cover sleeve 31 forms a rotationally restricted connection with the connector 33 via the magnetic latch 35. Turning the key drives the valve cover sleeve 31 to rotate, which in turn drives the connector 33 and the locking valve stem 32 via the magnetic latch 35. As the locking valve stem 32 rotates, the compression sleeve 34 moves upward or downward along the thread, which in turn pushes the pressure reducing valve core assembly 20 upward or downward along its axial direction, thereby opening or closing the pressure reducing valve. When the key is removed, the magnet moves away from the magnetic latch 35, which loses its repulsive force. The compressed spring 36 is released from its restriction, and the abutment 37, under the action of the spring 36, pushes the magnetic latch 35 back into the second lock hole 311, returning the valve cover sleeve 31 to an idle state.

[0082] In an alternative embodiment, the magnetic latch 35 can be a solid magnet for ease of processing. In another alternative embodiment, the magnetic latch 35 can also be an integrated structure formed by fitting a magnet and a latch. In this embodiment, the magnet is preferably attached to the end of the latch closest to the key to ensure magnetic force.

[0083] In an optional embodiment, if Figure 10 As shown, the lower end surface of the valve cover sleeve 31 is provided with two symmetrical second lock holes 311, and each second lock hole 311 is respectively installed in a magnetic latch 35; correspondingly, the lower end surface of the key is also embedded with two symmetrically arranged magnets, and the polarity of the magnets at corresponding positions and the opposite side of the magnetic latch 35 is the same; the upper end surface of the connecting member 33 is provided with two symmetrical first lock holes 331, and each first lock hole 331 is installed with a spring 36 and an abutment 37. This arrangement can ensure the uniformity and stability of the force applied to the valve cover sleeve 31 and the connecting member 33 when turning the key, while reducing the difficulty of operation. In other embodiments, the magnetic latch 35, spring 36, abutment 37 and the magnets at corresponding positions on the key can also be arranged in three, four or more groups evenly distributed along the circumference, and no specific limitation is made here.

[0084] In an optional embodiment, if Figure 1 and Figure 2As shown, the valve housing 10 further includes a gland 17, which is sleeved on the valve cover sleeve 31 and the upper valve cover 13, and the gland 17 is threadedly connected to the upper valve cover 13. There is an axial gap between the upper valve cover 13 and the gland 17, and the valve cover sleeve 31 is rotatably disposed in the gap between the upper valve cover 13 and the gland 17. This arrangement enables the gland 17 to form an axial limit effect on the valve cover sleeve 31. The valve cover sleeve 31 can only rotate relative to the upper valve cover 13, but cannot move axially, and is not easy to separate from the upper valve cover 13.

[0085] In an optional embodiment, if Figure 2 As shown, the pressure reducing valve core assembly 20 includes a pressure reducing valve stem 21, a valve disc 22, a buffer spring 24 and a pressure reducing spring 25. The pressure reducing valve stem 21 is penetrated by the water hole 111, and the valve disc 22 is fixedly connected to the top of the pressure reducing valve stem 21. A sealing gasket 23 is embedded in the end of the valve disc 22 close to the water hole 111. The valve disc 22 cooperates with the sealing gasket 23 to seal and close or open the water hole 111; one end of the buffer spring 24 abuts against the valve disc 22, and the other end abuts against the pressing sleeve 34; the bottom end of the lower valve cover 14 is internally threadedly connected to the limiting member 26; one end of the pressure reducing spring 25 abuts against the bottom end of the pressure reducing valve stem 21, and the other end abuts against the limiting member 26; the elastic force of the buffer spring 24 acts downward on the valve disc 22, and the elastic force of the pressure reducing spring 25 acts upward on the pressure reducing valve stem 21.

[0086] like Figure 2 As shown, when the pressure reducing valve is opened, the valve disc 22 moves upward away from the water hole 111 to open the water hole 111. Water flows into the valve chamber 11 through the water inlet channel 121, then flows out of the water outlet channel 122 through the gap between the water hole 111 and the valve disc 22. Due to the throttling effect of the gap, a pressure drop is generated, reducing the outlet pressure. When the outlet pressure is too high, the sum of the pressure of the medium acting on the pressure reducing valve stem 21 and the elastic force of the buffer spring 24 is greater than the elastic force of the pressure reducing spring 25. The pressure reducing spring 25 is compressed, causing the pressure reducing valve stem 21 to move downward, and at the same time, the valve disc 22 to move downward. The gap between the valve disc 22 and the water hole 111 becomes smaller, the resistance to the medium increases, and the outlet pressure decreases accordingly. When the outlet water pressure is low, the elastic force of the pressure reducing spring 25 is greater than the sum of the pressure exerted by the medium on the pressure reducing valve stem 21 and the elastic force of the buffer spring 24, causing the pressure reducing valve stem 21 to move upward, simultaneously driving the valve flap 22 upward. The gap between the valve flap 22 and the water passage 111 increases, reducing the resistance to the medium and increasing the outlet water pressure. The above steps are repeated throughout the entire water outlet process, so that the outlet water pressure remains stable.

[0087] When the pressure reducing valve needs maintenance or the water supply needs to be cut off due to malicious arrears, the key is put on the valve cover sleeve 31, and the valve cover sleeve 31 is driven to rotate by turning the key. The connecting piece 33 and the locking valve stem 32 rotate together with the valve cover sleeve 31. During the rotation of the locking valve stem 32, the pressing sleeve 34 will move downward along the thread and compress the buffer spring 24. The elastic force of the buffer spring 24 acts downward on the valve disc 22, causing the valve disc 22 to push the pressure reducing valve stem 21 to move downward and compress the pressure reducing spring 25. Then the valve disc 22 cooperates with the sealing gasket 23 to close the water hole 111, so that the entire water path is cut off, thereby achieving the closure of the pressure reducing valve. When the pressure reducing valve needs to be opened, the key is simply turned in the opposite direction. The pressure sleeve 34 moves upward along the thread. The elastic force of the pressure reducing spring 25 acts upward on the pressure reducing valve stem 21, causing the pressure reducing valve stem 21 to push the valve disc 22 upward, opening the water passage 111, making the entire water path conductive and achieving the opening of the pressure reducing valve. Due to the interconnectedness of the locking valve stem 32 and the pressure reducing valve stem 21, the product structure is simplified and the cost is reduced. When the key is removed, the valve cover sleeve 31 is in an idle state again, making the locking valve stem 32 unable to be operated. This effectively prevents damage to the magnetic locking assembly 30 caused by violent rotation, and enhances the anti-theft performance of the pressure reducing valve.

[0088] In an optional embodiment, if Figure 2 and Figure 13 As shown, the compression sleeve 34 includes a sleeve body 341 and an annular mating portion 342, which are connected to each other. The annular mating portion 342 is threadedly connected to the locking valve stem 32 and is circumferentially fixed to the upper valve cover 13. Specifically, the lower end of the upper valve cover 13 is provided with a mating hole. The mating hole is a non-circular hole. The annular mating portion 342 is located in the mating hole. The shape of the annular mating portion 342 is the same as the shape of the mating hole, thereby ensuring that the compression sleeve 34 can only move axially and not rotate circumferentially. For example, the mating hole is a hexagonal hole. The sleeve body 341 is sleeved on one end of the locking valve stem 32, and the bottom end of the sleeve body 341 is closed, thereby limiting the upper limit position of the movement of the compression sleeve 34.

[0089] In an optional embodiment, if Figure 13As shown, the sleeve 341 is coaxially connected to the annular mating portion 342, and a first stepped surface 343 is formed at the connection. The valve disc 22 includes a base 221 and a first raised portion 222 protruding from the center of the base 221. A second stepped surface 223 is formed at the connection between the base 221 and the first raised portion 222. The first end of the buffer spring 24 is sleeved on the sleeve 341 and abuts against the first stepped surface 343, while the second end of the buffer spring 24 is sleeved on the first raised portion 222 and abuts against the second stepped surface 223. This arrangement can effectively position the buffer spring 24 and prevent it from shifting. In addition, since a portion of the buffer spring 24 is sleeved on the sleeve 341 and another portion is sleeved on the first raised portion 222, the length of the buffer spring 24 between the sleeve 341 and the first raised portion 222 is correspondingly shortened, thereby reducing the height of the valve housing 10 in this axial direction, which is beneficial for reducing product cost and installation.

[0090] In an optional embodiment, if Figure 13 As shown, the pressure reducing valve stem 21 is an integrally formed structure, which includes a core rod 211 passing through the water hole 111 and connected to the valve disc 22, a baffle 212 fixedly connected to the lower end of the core rod 211, and a second protrusion 213 fixedly connected to the lower end of the baffle 212. The lower end of the baffle 212 is also provided with a receiving groove 214, which is circumferentially arranged on the circumference of the second protrusion 213; the limiting member 26 includes a connecting portion 261 threadedly connected to the lower valve cover 14 and a third protrusion 262 protruding from the center of the connecting portion 261, and a third step surface 263 is formed at the connection between the connecting portion 261 and the third protrusion 262. The first end of the pressure reducing spring 25 is sleeved on the second protrusion 213 and abuts against the bottom of the receiving groove 214, and the second end of the pressure reducing spring 25 is sleeved on the third protrusion 262 and abuts against the third step surface 263. This arrangement can achieve the positioning effect on the pressure relief spring 25 and prevent the pressure relief spring 25 from shifting. In addition, a portion of the pressure relief spring 25 is sleeved on the second protrusion 213 and located in the accommodating groove 214, and another portion is sleeved on the third protrusion 262. Therefore, the length of the pressure relief spring 25 between the second protrusion 213 and the third protrusion 262 is correspondingly shortened, so that the setting height of the valve housing 10 in this axial direction can be further reduced, which is more conducive to product cost reduction and installation.

[0091] In an optional embodiment, if Figure 1 、 Figure 2 and 5 As shown, the main valve body 12 is provided with a detection hole 124 communicating with the valve cavity 11 and a plug 16 that is detachably threaded to tighten the detection hole 124. When the plug 16 is removed, a pressure gauge can be installed in the detection hole 124 to monitor the outlet water pressure in real time.

[0092] In an optional implementation, Figure 1 and Figure 2 As shown, a telescopic tube 60, specifically a telescopic copper tube, is connected to the outlet flow channel 122. The telescopic tube 60 can be extended and retracted along its axial direction, giving the pressure reducing valve a telescopic joint function. When the pressure reducing valve is connected to an external pipeline, the telescopic tube 60 can compensate for installation errors, thereby conveniently connecting to one end of the water meter.

[0093] In an optional implementation, Figure 2 and Figure 14 As shown, a check assembly 50 is provided in the telescopic tube 60. The check assembly 50 is used to prevent the fluid from flowing back. This arrangement enables the pressure reducing valve to have a check function at the same time. Specifically, the check assembly 50 includes a check valve body 51, a check valve core 52 and a return spring 53. The outer wall of the check valve body 51 is tightly connected to the inner wall of the telescopic tube 60. The check valve body 51 is provided with a water outlet 511 connected to the water outlet channel 122. The check valve core 52 is located in the check valve body 51 and can seal the water outlet 511 closed or opened. One end of the return spring 53 abuts against the check valve core 52, and the other end abuts against the check valve body 51. When the medium flows along Figure 9 When the medium flows from left to right in the direction of the arrow, the force of the medium pushes the check valve core 52 to the right and compresses the return spring 53, thereby opening the water outlet 511 and allowing the medium to flow out of the water outlet 511. When there is no medium flow or the force of the medium is less than the elastic force of the return spring 53, the return spring 53 will drive the check valve core 52 to the right and close the water outlet 511. The check valve core 52 will only open when the medium flows from left to right. Therefore, the check assembly 50 can prevent fluid backflow, effectively preventing the water meter from reversing, while also protecting the front-end pressure reducing valve core assembly 20 from water hammer impact, thereby extending the life of the pressure reducing valve core assembly 20. It should be noted that the check assembly 50 is embedded in the telescopic tube 60 for easy installation and removal. It is optional and does not affect other functions.

[0094] In an optional implementation, Figure 14 As shown, a guide protrusion 512 is further provided in the check valve body 51. The check valve core 52 includes a coaxially connected valve core body 521 and a check valve stem 522. The valve core body 521 can seal and close or open the water outlet 511. The check valve stem 522 is inserted into the guide protrusion 512. A return spring 53 is simultaneously sleeved on the guide protrusion 512 and the check valve stem 522. One end of the return spring 53 abuts against the valve core body 521, and the other end abuts against the check valve body 51. With this arrangement, when the check valve core 52 moves along its axial direction, the cooperation between the check valve stem 522 and the guide protrusion 512 can guide the overall movement of the check valve core 52, thereby ensuring the stable operation of the check valve core 52.

[0095] In summary, the pressure reducing valve not only has the function of reducing and stabilizing pressure, but can also integrate the filtering function, magnetic locking function, cut-off function, telescopic joint function and check function. It has rich functions, higher practical value and smaller size.

[0096] Example 2

[0097] like Figure 15 As shown, the disclosed embodiment provides a multifunctional pressure-reducing valve. The structure of this multifunctional pressure-reducing valve is substantially identical to that of the multifunctional pressure-reducing valve of the first embodiment. The primary difference between the two is that the positions of the first lock hole 331 and the second lock hole 311 are interchanged. Specifically, the first lock hole 331 is defined on the side of the valve cover sleeve 31 facing the connector 33, and the second lock hole 311 is defined on the side of the connector 33 facing the valve cover sleeve 31, which mates with the first lock hole 331. A magnetic latch 35 is disposed within the second lock hole 311, and a spring 36 and abutment 37 are disposed within the first lock hole 331. The abutment 37 is positioned adjacent to the opening of the first lock hole 331 and is capable of compressing the spring 36. In this embodiment, after the key is installed on the valve cover sleeve 31, the magnet within the key is aligned with the abutment 37. The magnetism of the magnet on the side opposite to the magnetic latch 35 is opposite, meaning that the magnet and the magnetic latch 35 are magnetically attracted to each other.

[0098] Combine Figure 15 When the pressure reducing valve needs to be unlocked, the key is put on the valve cover sleeve 31. If the abutment 37 is not in the upper position of the magnetic latch 35, the valve cover sleeve 31 in the idle state can be rotated by the key. When the abutment 37 is rotated to the upper position of the magnetic latch 35, the magnetic latch 35 is acted upon by the magnet in the key, and the magnetic attraction between the magnet and the magnetic latch 35 is greater than the elastic force of the spring 36. Therefore, under the action of the magnet, the magnetic latch 35 moves axially upward along the second lock hole 311 and is embedded in the first lock hole 331, and is in contact with each other. The closed abutment 37 generates a force, and the spring 36 compresses and deforms to reset the valve cover. At this point, the valve cover sleeve 31 forms a rotationally restricted connection with the connector 33 via the magnetic latch 35. Turning the key drives the valve cover sleeve 31 to rotate, which in turn drives the connector 33 and the locking valve stem 32 via the magnetic latch 35. As the locking valve stem 32 rotates, the compression sleeve 34 moves upward or downward along the thread, which in turn pushes the pressure reducing valve core assembly 20 upward or downward along its axial direction, thereby opening or closing the pressure reducing valve. When the key is removed, the magnet moves away from the magnetic latch 35, which loses its attraction. The compressed spring 36 is released, and the abutment 37, under the action of the spring 36, seals the magnetic latch 35 within the second lock hole 311, causing the valve cover sleeve 31 to return to an idle state.

[0099] Example 3

[0100] like Figure 16As shown, the embodiment of the present disclosure provides a multifunctional pressure-reducing valve, the structure of which is basically the same as that of the multifunctional pressure-reducing valve of the first embodiment. The main difference between the two is that the magnetic locking assembly 30 includes a valve cover sleeve 31, a locking valve stem 32 and a pressing sleeve 34. The valve cover sleeve 31 is rotatably connected to the outside of the upper valve cover 13. One end of the locking valve stem 32 is rotatably extended into the valve housing 10, and the other end is threadedly connected to the pressing sleeve 34. The pressing sleeve 34 is fixedly arranged in the circumferential direction in the upper valve cover 13 and is directly connected to the pressure-reducing valve core assembly 20. The magnetic locking assembly 30 also includes a magnetic connector 38 and a spring The spring 36 and the magnetic connector 38 are arranged in the valve cover sleeve 31 and rotate synchronously with the valve cover sleeve 31. The spring 36 is arranged in the valve cover sleeve 31 and is sleeved on the upper end of the locking valve stem 32, and the upper end of the spring 36 is slightly higher than the upper end of the locking valve stem 32. One end of the spring 36 abuts against the lower end surface of the magnetic connector 38, and the other end abuts against the upper end surface of the upper valve cover 13; in the locked state, the valve cover sleeve 31 and the locking valve stem 32 are separated from each other; in the unlocked state, the magnetic connector 38 can overcome the elastic force of the spring 36 under the action of the external magnetic repulsion and move axially to connect the valve cover sleeve 31 and the locking valve stem 32 at the same time.

[0101] In an optional embodiment, if Figure 16 As shown, the magnetic connector 38 includes a connector body 381 and two magnets 382 embedded in the upper end surface of the connector body 381. The connector body 381 is fixedly arranged in the valve cover sleeve 31 in the circumferential direction. After the key is installed on the valve cover sleeve 31, the magnet in the key is exactly opposite to the corresponding magnet 382, ​​and the magnet has the same magnetic property as the magnet 382 on the opposite side. That is to say, there is magnetic repulsion between the magnet and the magnet 382.

[0102] Combine Figure 16When the pressure reducing valve needs to be unlocked, the key is put on the valve cover sleeve 31, and the magnet 382 is acted upon by the magnet in the key, and the magnetic repulsion between the magnet and the magnet 382 is greater than the elastic force of the spring 36. Therefore, under the action of the magnet, the magnet 382 drives the connector body 381 to move axially downward and compresses the spring 36, so that the bottom end of the connector body 381 and the top end of the locking valve stem 32 are plugged into each other. At this time, the valve cover sleeve 31 forms a rotation-restricted connection with the locking valve stem 32 through the connector body 381. By turning the key to drive the valve cover sleeve 31 to rotate, the valve cover sleeve 31 drives the connector body 381 and the locking valve stem 32 to rotate. As the locking valve stem 32 rotates, the pressing sleeve 34 will move up or down along the thread, thereby realizing the opening or closing of the pressure reducing valve. When the key is removed, the pressure reducing valve is in a locked state, the magnet moves away from the magnet 382, ​​the magnet 382 loses its magnetic repulsion, the compressed spring 36 is released from restriction, and the connector body 381 moves axially upward under the reset action of the spring 36 and disconnects from the locking valve stem 32. At this time, the valve cover sleeve 31 and the connector body 381 are in an idling state, and the locking valve stem 32 will not rotate with it, effectively avoiding damage and failure of the magnetic locking assembly 30 caused by violent rotation, thereby enhancing the anti-theft effect of the pressure reducing valve.

[0103] Example 4

[0104] like Figure 17 As shown, the embodiment of the present disclosure provides a multifunctional pressure-reducing valve, the structure of which is basically the same as that of the multifunctional pressure-reducing valve of the first embodiment, and the main difference between the two is that: the magnetic locking assembly 30 includes a valve cover sleeve 31, a locking valve stem 32 and a pressing sleeve 34, the valve cover sleeve 31 is rotatably connected to the outside of the upper valve cover 13, one end of the locking valve stem 32 extends into the valve housing 10 and can rotate synchronously with the valve housing 10, and the other end is threadedly connected to the pressing sleeve 34, and the pressing sleeve 34 is fixedly arranged in the upper valve cover 13 in the circumferential direction and is directly connected to the pressure-reducing valve core assembly 20; a first locking hole 331 is provided on the side surface of the valve housing 10 facing the valve cover sleeve 31, and a second locking hole 311 is provided on the side surface of the valve housing 10 facing the upper valve cover 13 to match the first locking hole 331, and the magnetic locking The assembly 30 also includes a magnetic column 391, a spring 36 and a latch 392. The magnetic column 391 is arranged in the second lock hole 311, and the spring 36 and the latch 392 are arranged in the first lock hole 331. The latch 392 is close to the hole opening of the first lock hole 331 and can compress the spring 36. The diameter of the latch 392 is smaller than the diameter of the second lock hole 311, and the diameter of the magnetic column 391 is larger than the diameter of the first lock hole 331, ensuring that the latch 392 can be inserted into the second lock hole 311, while the magnetic column 391 will not be inserted into the first lock hole 331; in the locked state, the latch 392 is inserted into the second lock hole 311 and abuts against the magnetic column 391; in the unlocked state, the magnetic column 391 can block the latch 392 in the first lock hole 331 under the action of external magnetic force, so that the valve cover sleeve 31 can rotate relative to the valve housing 10.

[0105] In this embodiment, after the key is installed on the valve cover sleeve 31, the magnet in the key is exactly opposite to the position of the magnetic column 391, and the magnetism of the magnet and the magnetic column 391 on the opposite side is opposite, that is, there is a magnetic repulsion between the magnet and the magnetic column 391.

[0106] Combine Figure 17 When the pressure reducing valve needs to be unlocked, the key is put on the valve cover sleeve 31. The magnetic repulsion between the magnet in the key and the magnetic column 391 is greater than the elastic force of the spring 36. Therefore, under the action of the magnet, the magnetic column 391 moves axially downward along the second lock hole 311 and completely blocks the latch 392 in the first lock hole 331. The spring 36 is compressed and deformed to play a reset role, but the magnetic column 391 will not enter the first lock hole 331, so that the valve cover sleeve 31 and the upper valve cover 13 are separated from the circumferential restriction. At this time, the valve cover sleeve 31 can rotate relative to the upper valve cover 13. By turning the key, the valve cover sleeve 31 is driven to rotate, and the valve cover sleeve 31 drives the locking valve stem 32 to rotate. As the locking valve stem 32 rotates, the pressing sleeve 34 will move up or down along the thread, thereby realizing the opening or closing of the pressure reducing valve. Figure 17 As shown, when the key is removed, the magnet moves away from the magnetic column 391, the magnetic column 391 loses its repulsive force, the compressed spring 36 releases the restriction, and the latch 392 moves upward under the action of the spring 36 to push the magnetic column 391 back into the second lock hole 311. At this time, the upper half of the latch 392 extends into the second lock hole 311, and the lower half of the latch 392 is located in the first lock hole 331. A rotation restriction connection is formed between the valve cover sleeve 31 and the upper valve cover 13 through the latch 392, that is, the valve cover sleeve 31 cannot rotate relative to the upper valve cover 13, so the locking valve stem 32 cannot be operated, and the pressure reducing valve returns to the locked state, ensuring the anti-theft effect of the pressure reducing valve.

[0107] Example 5

[0108] like Figure 18 As shown, the embodiment of the present disclosure provides a multifunctional pressure-reducing valve. The structure of the multifunctional pressure-reducing valve is basically the same as that of the multifunctional pressure-reducing valve of Example 4. The main difference between the two is that the positions of the first lock hole 331 and the second lock hole 311 are interchanged. Specifically, the first lock hole 331 is formed on the side surface of the valve cover sleeve 31 facing the upper valve cover 13, and the second lock hole 311 that matches the first lock hole 331 is formed on the side surface of the upper valve cover 13 facing the valve cover sleeve 31. The magnetic column 391 is disposed in the second lock hole 311, and the spring 36 and the latch 392 are disposed in the first lock hole 331. The latch 392 is close to the opening of the first lock hole 331 and can compress the spring 36. In this embodiment, the magnet in the key has opposite magnetic properties to the side opposite to the magnetic column 391, that is, the magnet and the magnetic column 391 are magnetically attracted to each other.

[0109] Combine Figure 18When the pressure reducing valve needs to be unlocked, the key is put on the valve cover sleeve 31. The magnetic attraction between the magnet in the key and the magnetic column 391 is greater than the elastic force of the spring 36. Therefore, under the action of the magnet, the magnetic column 391 moves axially upward along the second lock hole 311 and completely blocks the latch 392 in the first lock hole 331. The spring 36 is compressed and deformed to play a reset role, but the magnetic column 391 will not enter the first lock hole 331, so that the valve cover sleeve 31 and the upper valve cover 13 are separated from the circumferential restriction. At this time, the valve cover sleeve 31 can rotate relative to the upper valve cover 13. By turning the key, the valve cover sleeve 31 is driven to rotate, and the valve cover sleeve 31 drives the locking valve stem 32 to rotate. As the locking valve stem 32 rotates, the pressing sleeve 34 will move up or down along the thread, thereby realizing the opening or closing of the pressure reducing valve. Figure 18 As shown, when the key is removed, the magnet moves away from the magnetic column 391, the magnetic column 391 loses its magnetic attraction, the compressed spring 36 releases the restriction, and the latch 392 moves downward under the action of the spring 36 to push the magnetic column 391 back into the second lock hole 311. At this time, the lower half of the latch 392 extends into the second lock hole 311, and the upper half of the latch 392 is located in the first lock hole 331. A rotation restriction connection is formed between the valve cover sleeve 31 and the upper valve cover 13 through the latch 392, that is, the valve cover sleeve 31 cannot rotate relative to the upper valve cover 13, so the locking valve stem 32 cannot be operated, and the pressure reducing valve returns to the locked state, ensuring the anti-theft effect of the pressure reducing valve.

[0110] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A multifunctional pressure reducing valve, comprising a valve housing (10) and a pressure reducing valve core assembly (20), wherein the valve housing (10) is provided with a water inlet flow channel (121), a water outlet flow channel (122) and a valve cavity (11), wherein the valve cavity (11) is respectively connected to the water inlet flow channel (121) and the water outlet flow channel (122), and the pressure reducing valve core assembly (20) is arranged in the valve cavity (11), characterized in that: A filter chamber (123) is further provided in the valve housing (10), the filter chamber (123) intersecting and communicating with the water inlet channel (121), the multifunctional pressure reducing valve further comprising a filter screen (40), the filter screen (40) being detachably arranged in the filter chamber (123), a water inlet opening (41) being provided on the side of the filter screen (40), the water inlet opening (41) being arranged opposite to the water inlet end of the water inlet channel (121); The filter screen (40) comprises a filter screen body (46), a first injection-molded reinforcing rib (42) and a second injection-molded reinforcing rib (43) respectively connected to two axial ends of the filter screen body (46), and a third injection-molded reinforcing rib (44) connected to the circumferential side of the filter screen body (46), and the water inlet opening (41) is provided on the third injection-molded reinforcing rib (44).

2. The multifunctional pressure reducing valve according to claim 1, characterized in that: The third injection-molded reinforcing rib (44) fits against the side wall of the filter cavity (123), and a gap exists between the filter screen body (46) and the side wall of the filter cavity (123).

3. The multifunctional pressure reducing valve according to claim 1, characterized in that: One of the filter screen (40) and the valve housing (10) is provided with a positioning protrusion (45), and the other of the two is provided with a positioning groove (125) matched with the positioning protrusion (45).

4. The multifunctional pressure reducing valve according to claim 1, characterized in that: The water inlet channel (121) is connected to the water inlet opening (41), and one end of the water inlet channel (121) connected to the water inlet opening (41) is a docking port (1211), and the water inlet opening (41) is matched with the docking port (1211).

5. The multifunctional pressure reducing valve according to claim 1, characterized in that: The filter cavity (123) comprises a protruding section (1231), an intermediate section (1232) and a groove section (1233) which are connected in sequence; the protruding section (1231) is arranged to protrude from the water inlet channel (121); the intermediate section (1232) is directly connected to the water inlet channel (121); the groove section (1233) is arranged on the inner wall of the water inlet channel (121); and the bottom of the groove section (1233) is a plane (1234); one end of the filter screen (40) is in contact with the plane (1234).

6. The multifunctional pressure reducing valve according to claim 5, characterized in that: One end of the protruding section (1231) protruding from the water inlet channel (121) is detachably connected to an end cover (15), and the end cover (15) seals the filter screen (40) in the filter cavity (123).

7. The multifunctional pressure reducing valve according to claim 5, characterized in that: A first extension wall (126) is provided on the side wall of the valve cavity (11) at the junction with the water inlet channel (121), and the first extension wall (126) partially closes the water inlet channel (121). A water flow groove (128) connected to the valve cavity (11) is provided on the inner side wall of the water inlet channel (121) opposite to the free end of the first extension wall (126).

8. The multifunctional pressure reducing valve according to claim 7, characterized in that: The water flow channel (128) is connected to both the middle section (1232) and the groove section (1233).

9. The multifunctional pressure reducing valve according to any one of claims 1 to 8, characterized in that: The multifunctional pressure reducing valve further comprises a magnetic locking assembly (30) capable of being coaxially linked with the pressure reducing valve core assembly (20); the magnetic locking assembly (30) can be switched from a locked state to an unlocked state under the action of an external magnetic force; and in the unlocked state, the magnetic locking assembly (30) can drive the pressure reducing valve core assembly (20) to move along its axial direction to achieve conduction or cutoff of the fluid.

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