Pressure reducing valve

Abstract

The utility model discloses a pressure reducing valve, including valve body and valve core subassembly, and the valve cavity has in the valve body, and valve core subassembly at least partial is located in the valve cavity, and the valve cavity includes first chamber, second chamber and valve port, and the valve port is used for the first chamber and second chamber are conducted, and the valve body is provided with with first chamber intercommunication's first gas inlet and second gas inlet, and the second chamber intercommunication's gas outlet, and valve core subassembly can control the opening and close of valve port. The utility model adds the second gas inlet with first chamber intercommunication, on one hand can realize the convenient switching of gas supply direction, need not to dismount to pressure gauge and other parts, and the operation process is greatly simplified, on the other hand, when a plurality of pressure reducing valves are used in series, can through second gas inlet for adjacent pressure reducing valve gas supply, replaces traditional joint and pipeline and realizes the direct connection between valve body, makes a plurality of valve body can be closely connected arrangement, not only significantly reduces the installation complexity, but also can greatly save the equipment occupied space, reduces the purchase and installation cost of joint, pipeline and other accessories simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve technology, and in particular to a pressure reducing valve. Background Technology

[0002] Traditional pressure reducing valves typically have one inlet and one outlet, with a valve port directly connected between them. During operation, the supply pressure or flow rate can be precisely controlled by adjusting the opening parameter of this valve port.

[0003] For example, a pressure reducing valve disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN211449784U) includes a valve body and a valve cover covering the valve body; the valve body has an air inlet and an air outlet, and the valve body has a valve port connecting the air inlet and the air outlet, and the valve body also has a main pressure regulating chamber and a secondary pressure regulating chamber; a main diaphragm is pressed in the main pressure regulating chamber, the main diaphragm divides the main pressure regulating chamber into an upper chamber and a lower chamber, a valve stem is fixed on the main diaphragm, and a valve core for controlling the opening and closing of the valve port is installed on the valve stem; the secondary pressure regulating chamber has a first secondary diaphragm, a second secondary diaphragm, and a diaphragm seat, and an operating rod is provided on the valve cover, the operating rod passing through the valve cover and abutting against the diaphragm seat; the upper chamber is connected to the air inlet through an air inlet channel, the air inlet channel has a throttling orifice, the valve body has an installation hole connecting to the air inlet channel, the installation hole is located between the throttling orifice and the air inlet, the installation hole is filled with a filter element, and the valve body has a plug to seal the installation hole. This pressure reducing valve has the advantages of simple structure, good filtration effect, and convenient filter element replacement.

[0004] However, the pressure reducing valve disclosed in the above-mentioned prior art has the following shortcomings: First, the gas supply direction is singular. If the gas supply direction needs to be adjusted, the pressure gauge, front and rear panels and other components need to be disassembled and reassembled, which is very cumbersome. Second, when multiple pressure reducing valves are used in series, they need to be connected to the pipeline through connectors, and space needs to be reserved for the inlet and outlet pipes of each valve body. This means that multiple valve bodies must maintain a certain distance, which not only increases the installation complexity, but also occupies more space.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of this utility model is to solve the problems of the single gas supply direction of the pressure reducing valve in the prior art, which makes the adjustment of the gas supply direction of the pressure reducing valve cumbersome and the reliance on the joint pipeline for multiple valves in series. Therefore, a pressure reducing valve is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A pressure reducing valve includes a valve body and a valve core assembly. The valve body has a valve cavity, and the valve core assembly is at least partially located within the valve cavity. The valve cavity includes a first cavity, a second cavity, and a valve port. The valve port is used to connect the first cavity and the second cavity. The valve body has a first air inlet and a second air inlet communicating with the first cavity, and an air outlet communicating with the second cavity. The valve core assembly can control the opening and closing of the valve port. The valve core assembly includes a valve core and a balance spring. Both the valve core and the balance spring are located in the first cavity. The valve core cooperates with the valve port, and the balance spring abuts against the valve core and the inner wall of the first cavity, so that the valve core always has a tendency to block the valve port.

[0008] Furthermore, the pressure reducing valve also includes a valve stem, at least partially located in the second chamber, with the first end of the valve stem extending into the first chamber and engaging with the valve core; the second end of the valve stem is tractively connected to a pressure regulating component; the pressure regulating component acts on the valve stem to adjust the pressure value required to open the valve port.

[0009] Furthermore, the valve body is provided with a valve cover, which cooperates with the valve body to form a pressure regulating chamber, and the pressure regulating assembly is disposed in the pressure regulating chamber; the movement direction of the valve core is defined as the first direction, and the pressure regulating assembly includes an operating rod, a nut, a compression spring, a spring seat, and a pressure regulating diaphragm arranged along the first direction. The nut can move along the first direction of the pressure regulating chamber, and the nut is anti-rotationally engaged with the inner wall of the pressure regulating chamber. The operating rod is threadedly connected to the nut, and the operating rod is rotatably engaged with the valve cover. The spring seat abuts against the pressure regulating diaphragm, and the pressure regulating diaphragm abuts against the second end of the valve stem. The compression spring abuts between the spring seat and the nut, and the elastic force of the compression spring acts on the spring seat, so that the spring seat always has a tendency to drive the pressure regulating diaphragm to move in the negative direction of the first direction. When the operating rod is operated, the nut moves along the first direction of the operating rod, so that the compression spring drives the spring seat to drive the pressure regulating diaphragm to act on the valve stem, thereby adjusting the pressure value required to open the valve port.

[0010] Furthermore, the valve core is provided with a first guide groove, and the first cavity is provided with a second guide groove that corresponds to and cooperates with the first guide groove. The two ends of the balance spring are respectively placed in the first guide groove and the second guide groove.

[0011] Furthermore, the voltage regulating component is connected to a locking structure. When the locking structure is in the locked state, the operating lever cannot be operated; when the locking structure is in the unlocked state, the operating lever can be operated.

[0012] Furthermore, both the first and second air inlets are provided with a connecting portion, and the connecting portion has a first pressing slope.

[0013] Furthermore, the pressure reducing valve also includes a connector that mates with the connecting part. Two adjacent valve bodies are connected by the connection part and the connector. The connector has a second pressing slope that mates with the first pressing slope.

[0014] Furthermore, the connecting portion has a positioning notch, and the connecting member has a positioning protrusion that mates with the positioning notch.

[0015] Furthermore, the pressure reducing valve also includes a connecting block, which can be connected to the connecting part through the connecting member; the connecting block has an air chamber, and the connecting block has a plurality of air ports communicating with the air chamber, and the air chamber of the connecting block can be connected to the first chamber of the valve body through one of the air ports.

[0016] With the above structure, the beneficial effects of this utility model are as follows: The pressure reducing valve of this utility model includes a valve body and a valve core assembly. The valve body has a valve cavity, and the valve core assembly is at least partially located in the valve cavity. The valve cavity includes a first cavity, a second cavity, and a valve port. The valve port is used to connect the first cavity and the second cavity. The valve body has a first air inlet and a second air inlet communicating with the first cavity, and an air outlet communicating with the second cavity. The valve core assembly can control the opening and closing of the valve port. This utility model adds a second air inlet connected to the first chamber. On the one hand, it enables convenient switching of the air supply direction without disassembling or assembling components such as pressure gauges and front and rear panels, greatly simplifying the operation process. On the other hand, when multiple pressure reducing valves are used in series, air can be supplied to adjacent pressure reducing valves through the second air inlet, replacing the traditional connectors and pipelines to achieve direct connection between valve bodies. There is no need to reserve additional pipe space for each valve body's inlet and outlet pipes, allowing multiple valve bodies to be tightly connected and arranged. This not only significantly reduces installation complexity but also greatly saves equipment space and reduces the procurement and installation costs of connectors, pipelines, and other accessories, comprehensively improving the flexibility and economy of pressure reducing valves in practical applications. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model. Figure 1 ; Figure 3 This is the utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is a cross-sectional view of the overall structure of this utility model. Figure 2 ; Figure 5 This is the utility model Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 This is an exploded view of the overall structure of this utility model; Figure 7 This is an exploded view of the connector of this utility model; Figure 8 This is a schematic diagram of the mating connection between the pressure reducing valve and the connecting parts of this utility model; Figure 9 This is a three-dimensional schematic diagram of the connecting block of this utility model; Figure 10 This is a schematic diagram of the mating connection between the pressure reducing valve and the connecting block of this utility model. Figure 1 ; Figure 11 This is a schematic diagram of the mating connection between the pressure reducing valve and the connecting block of this utility model. Figure 2 ; Figure 12 This is the utility model Figure 11 A sectional view; Figure 13 This is the utility model Figure 12 A magnified schematic diagram of the structure at point C.

[0019] Figures 1 to 13 The winning number is: 1. Valve body; 11. Valve chamber; 111. First chamber; 1111. Second guide groove; 112. Second chamber; 113. Valve port; 12. First air inlet; 13. Second air inlet; 14. Air outlet; 15. Valve cover; 16. Pressure regulating chamber; 2. Valve core assembly; 21. Valve core; 211. First guide groove; 22. Balance spring; 3. Valve stem; 4. Pressure regulating assembly; 41. Operating lever; 42. Nut; 43. Compression spring; 44. Spring seat; 45. Pressure regulating diaphragm; 5. Connecting part; 51. First pressing slope; 52. Positioning notch; 6. Connecting piece; 61. Second pressing slope; 62. Positioning protrusion; 63. Frame part; 64. Sealing part; 65. Snap-fit ​​groove; 7. Connecting block; 71. Air chamber; 72. Air port; 8. Pressure gauge. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, the term "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this invention are for illustrative purposes only and do not represent the only possible implementation.

[0026] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] like Figures 1 to 13 As shown, a pressure reducing valve includes a valve body 1 and a valve core assembly 2. The valve body 1 has a valve cavity 11, and the valve core assembly 2 is at least partially located within the valve cavity 11. The valve cavity 11 includes a first cavity 111, a second cavity 112, and a valve port 113. The valve port 113 is used to connect the first cavity 111 and the second cavity 112. The valve body 1 has a first air inlet 12 and a second air inlet 13 communicating with the first cavity 111, and an air outlet 14 communicating with the second cavity 112. The valve core assembly 2 can control the opening and closing of the valve port 113. The valve core assembly 2 includes a valve core 21 and a balance spring 22. The valve core 21 and the balance spring 22 are both located in the first cavity 111. The valve core 21 cooperates with the valve port 113. The balance spring 22 abuts against the valve core 21 and the inner wall of the first cavity 111, so that the valve core 21 always has a tendency to block the valve port 113.

[0028] Based on the above embodiments, the present invention provides a pressure reducing valve, including a valve body 1 and a valve core assembly 2. The valve body 1 has a valve cavity 11, and the valve core assembly 2 is at least partially located in the valve cavity 11. The valve cavity 11 includes a first cavity 111, a second cavity 112, and a valve port 113. The valve port 113 is used to connect the first cavity 111 and the second cavity 112. The valve body 1 has a first air inlet 12 and a second air inlet 13 communicating with the first cavity 111, and an air outlet 14 communicating with the second cavity 112. The valve core assembly 2 can control the opening and closing of the valve port 113. This utility model adds a second air inlet 13 connected to the first chamber 111. On the one hand, it can realize convenient switching of air supply direction without disassembling and assembling pressure gauge 8, front and rear panels and other components, greatly simplifying the operation process. On the other hand, when multiple pressure reducing valves are used in series, air can be supplied to adjacent pressure reducing valves through the second air inlet 13, replacing the traditional connectors and pipelines to realize direct connection between valve bodies 1. There is no need to reserve extra pipe space for each valve body 1's inlet and outlet pipes, so that multiple valve bodies 1 can be tightly connected and arranged. This not only significantly reduces the installation complexity, but also greatly saves the space occupied by the equipment, while reducing the procurement and installation costs of connectors, pipelines and other accessories, comprehensively improving the flexibility and economy of pressure reducing valves in practical applications.

[0029] As another preferred embodiment of the present invention, the pressure reducing valve further includes a valve stem 3, which is at least partially located in the second chamber 112. The first end of the valve stem 3 extends into the first chamber 111 and is connected to the valve core 21. The second end of the valve stem 3 is drivenly connected to a pressure regulating component 4. The pressure regulating component 4 acts on the valve stem 3 to adjust the pressure value required to open the valve port 113. The valve body 1 is provided with a valve cover 15, which cooperates with the valve body 1 to form a pressure regulating chamber 16. The pressure regulating assembly 4 is disposed in the pressure regulating chamber 16. The moving direction of the valve core 21 is defined as the first direction. The pressure regulating assembly 4 includes an operating rod 41, a nut 42, a compression spring 43, a spring seat 44, and a pressure regulating diaphragm 45 arranged along the first direction. The nut 42 can move along the first direction of the pressure regulating chamber 16. The nut 42 is anti-rotatingly engaged with the inner wall of the pressure regulating chamber 16. The operating rod 41 is threadedly connected to the nut 42. The operating rod 41 is rotatably engaged with the valve cover 15. The spring seat 44 abuts against the pressure regulating diaphragm 45, and the pressure regulating diaphragm 45 abuts against the second end of the valve stem 3; the compression spring 43 abuts between the spring seat 44 and the nut 42, and the elastic force of the compression spring 43 acts on the spring seat 44, so that the spring seat 44 always has the tendency to drive the pressure regulating diaphragm 45 to move in the first direction; when the operating lever 41 is operated, the nut 42 moves along the first direction of the operating lever 41, so that the compression spring 43 drives the spring seat 44 to drive the pressure regulating diaphragm 45 to act on the valve stem 3, thereby adjusting the pressure value required to open the valve port 113.

[0030] In this embodiment, as Figures 2 to 5 As shown, the working principle of the pressure reducing valve is as follows: the locking cap is manually rotated clockwise, which drives the operating rod 41 to rotate synchronously. The nut 42 moves in the negative direction of the first direction, and the nut 42 compresses the compression spring 43, so that the compression spring 43 generates a spring force F1. The direction of the spring force F1 is the negative direction of the first direction. The spring force F1 acts on the spring seat 44 and the pressure regulating diaphragm 45. The pressure regulating diaphragm 45 drives the valve rod 3 to move in the negative direction of the first direction. The valve rod 3 pushes the valve core 21 open in the negative direction of the first direction, so that the valve port 113 is opened, thereby connecting the first chamber 111 with the second chamber 112. The air outlet 14 is connected to the first air inlet 12 and / or the second air inlet 13, and the compressed gas begins to build pressure at the air outlet 14. The established pressure drives the valve stem 3 to generate a thrust F2 on the pressure regulating diaphragm 45. The direction of the thrust F2 is the positive direction of the first direction. When F2 = F1, the outlet pressure reaches the set pressure value, and the elastic force F1 and the thrust F2 cancel each other out. The valve core 21 will block the valve port 113 under the action of the balance spring 22. When F2 < F1, that is, when the pressure at the outlet 14 is lower than the set value, the elastic force F1 acts on the spring seat 44 and the pressure regulating diaphragm 45. The pressure regulating diaphragm 45 drives the valve stem 3 to move in the negative direction of the first direction. The valve stem 3 pushes the valve core 21 open in the negative direction of the first direction, so that the valve port 113 is opened until F2 = F1. This action is repeated repeatedly so that the pressure reducing valve always outputs gas that meets the pressure requirements. In this embodiment, the moving direction of the valve core 21 is the first direction. The positive direction and the negative direction of the first direction are as follows: Figure 2 As shown.

[0031] It should be noted that the working principle mentioned above can be referred to a miniature pressure reducing valve disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN212616573U) or a precision pressure regulating valve disclosed in Chinese Utility Model Patent (Authorization Announcement No.: CN202867968U). The specific working principle will not be elaborated here.

[0032] In another preferred embodiment of this utility model, the valve core 21 is provided with a first guide groove 211, and the first cavity 111 is provided with a second guide groove 1111 that corresponds to and cooperates with the first guide groove 211. The two ends of the balance spring 22 are respectively placed in the first guide groove 211 and the second guide groove 1111. In this embodiment, as... Figure 3 As shown, the balance spring 22 is guided by the first guide groove 211 and the second guide groove 1111 to prevent the balance spring 22 from shifting during the extension and retraction process.

[0033] As another preferred embodiment of this utility model, the pressure regulating component 4 is connected to a locking structure. When the locking structure is in the locked state, the operating rod 41 cannot be operated; when the locking structure is in the unlocked state, the operating rod 41 can be operated. The locking mechanism includes a locking cap, which is connected to the operating rod 41 to prevent rotation. The locking cap is provided with a first locking tooth, and the valve cover 15 is provided with a second locking tooth that meshes with the first locking tooth. When the second locking tooth meshes with the first locking tooth, the locking structure is in the locked state, and at this time, the locking cap cannot be rotated, that is, the operating rod 41 cannot be rotated; when the second locking tooth disengages from the first locking tooth, the locking structure is in the unlocked state, and at this time, the locking cap can be rotated, that is, the operating rod 41 can be rotated. In this embodiment, as... Figure 6 As shown, the locking structure can lock the operating lever 41, effectively preventing the operating lever 41 from rotating due to accidental contact, vibration or other external factors, ensuring that the pressure regulating parameters of the pressure reducing valve remain stable, so that it can continuously and reliably output gas that meets the preset pressure requirements, thus ensuring the consistency of gas supply.

[0034] In another preferred embodiment of this utility model, both the first air inlet 12 and the second air inlet 13 are provided with connecting portions 5, and the connecting portions 5 have a first pressing slope 51. The pressure reducing valve also includes a connecting member 6 that mates with the connecting portions 5. Two adjacent valve bodies 1 are connected through the mating of the connecting portions 5 and the connecting member 6. The connecting member 6 has a second pressing slope 61 that mates with the first pressing slope 51. The connecting portion 5 has a positioning notch 52, and the connecting member 6 has a positioning protrusion 62 that mates with the positioning notch 52. The connecting member 6 includes a frame portion 63 and a sealing portion 64. The connecting member 6 is frame-shaped and has a snap-fit ​​groove 65 that can accommodate two connecting portions 5. The second pressing slope 61 is disposed within the snap-fit ​​groove 65. In this embodiment, as... Figure 3 , Figure 7 and Figure 8As shown, the connector 6 can connect the connecting parts 5 of two adjacent pressure reducing valves, realizing a direct connection between the two valve bodies 1 without reserving additional pipe space for the inlet and outlet pipes of each valve body 1. This not only reduces installation complexity but also saves equipment space. At this time, the second inlet 13 of the previous pressure reducing valve is connected to the first inlet 12 of the next pressure reducing valve, realizing the communication of gas in the first chamber 111. At this time, the second inlet 13 of the next pressure reducing valve can be used for air intake, can be blocked, or can be used as a gas distribution outlet to continue supplying gas to the next pressure reducing valve. During connection, the connecting part 5 of the preceding valve body 1 fits snugly with the connecting part 5 of the following valve body 1, and both are accommodated within the snap-fit ​​groove 65 of the connector 6. At this time, the second pressing slope 61 of the connector 6 fits tightly with the first pressing slope 51 of the connecting part 5. The sealing part 64 is connected to the frame part 63 by bolts. As the bolts are gradually tightened, the second pressing slope 61 applies a greater pressing force to the first pressing slope 51, so that the connecting parts 5 of the two adjacent valve bodies 1 can be tightly connected. The positioning notch 52 and the positioning protrusion 62 enable the connector 6 to be quickly positioned and installed with the connecting parts 5 of two adjacent pressure reducing valves, improving installation efficiency.

[0035] As another preferred embodiment of this utility model, the pressure reducing valve further includes a connecting block 7, which can be connected to the connecting portion 5 of the valve body 1 via the connecting member 6; the connecting block 7 has an air chamber 71, and the connecting block 7 has several air ports 72 communicating with the air chamber 71, and the air chamber 71 of the connecting block 7 can be connected to the first cavity 111 of the valve body 1 through one of the air ports 72. The connecting block 7 is provided with the connecting portion 5. In this embodiment, as... Figures 9 to 11As shown, the gas supply direction configuration of the pressure reducing valve is further optimized by connecting block 7, improving the flexibility and coverage of the gas supply direction. This design can adapt to gas demand in different scenarios. Whether it is lateral, forward, or other specific directional gas supply demand, stable gas supply can be achieved without additional adjustments, simplifying the installation and use process and improving the operational convenience and equipment adaptability in scenarios with multi-directional gas supply demand. Specifically, the connecting block 7 is provided with the connecting part 5. The connecting block 7 is connected to the valve body 1 through the connecting piece 6, so that the gas chamber 71 of the connecting block 7 is connected to the first chamber 111 of the valve body 1 through the gas port 72, realizing gas communication. During connection, the connecting part 5 of the valve body 1 and the connecting part 5 of the connecting block 7 fit together and are both accommodated in the snap-fit ​​groove 65 of the connecting member 6. At this time, the second pressing slope 61 of the connecting member 6 fits tightly with the first pressing slope 51 of the connecting part 5. The sealing part 64 is connected to the frame part 63 by bolts. As the bolts are gradually tightened, the second pressing slope 61 applies a greater pressing force to the first pressing slope 51, so that the valve body 1 and the connecting block 7 can be tightly connected. In use, the unused air port 72 of the connecting block 7 can be sealed. In a further preferred embodiment, such as Figure 10 As shown, when the two pressure reducing valves are used in conjunction with a connecting block 7, air supply can be achieved in six directions, namely the first air inlet 12 and the five air ports 72 on the connecting block 7; in other preferred embodiments, such as Figures 11 to 13 As shown, when the two pressure reducing valves are used in conjunction with the two connecting blocks 7, air supply can be achieved in ten directions, namely five air ports 72 on one connecting block 7 and five air ports 72 on the other connecting block 7.

[0036] As another preferred embodiment of this utility model, the valve body 1 is provided with a pressure gauge 8 communicating with the second chamber 112. In this embodiment, as... Figure 4 As shown, the configuration of pressure gauge 8 can intuitively monitor the pressure fluctuation of the air outlet 14, thereby accurately ensuring that the pressure reducing valve outputs a stable pressure that meets the usage requirements.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A pressure reducing valve, comprising a valve body (1) and a valve core assembly (2), wherein the valve body (1) has a valve cavity (11), and the valve core assembly (2) is at least partially located within the valve cavity (11), characterized in that: The valve chamber (11) includes a first chamber (111), a second chamber (112), and a valve port (113). The valve port (113) is used to connect the first chamber (111) and the second chamber (112). The valve body (1) has a first air inlet (12) and a second air inlet (13) communicating with the first chamber (111), and an air outlet (14) communicating with the second chamber (112). The valve core assembly (2) can control the opening and closing of the valve port (113). The valve core assembly (2) includes a valve core (21) and a balance spring (22). The valve core (21) and the balance spring (22) are both located in the first chamber (111). The valve core (21) cooperates with the valve port (113). The balance spring (22) abuts against the valve core (21) and the inner wall of the first chamber (111), so that the valve core (21) always has the tendency to block the valve port (113).

2. A pressure reducing valve according to claim 1, characterized in that: The pressure reducing valve also includes a valve stem (3), which is at least partially located in the second chamber (112). The first end of the valve stem (3) extends into the first chamber (111) and is connected to the valve core (21). The second end of the valve stem (3) is connected to a pressure regulating component (4). The pressure regulating component (4) acts on the valve stem (3) to adjust the pressure value required to open the valve port (113).

3. A pressure reducing valve according to claim 2, characterized in that: The valve body (1) is provided with a valve cover (15), and the valve cover (15) cooperates with the valve body (1) to form a pressure regulating chamber (16). The pressure regulating assembly (4) is disposed in the pressure regulating chamber (16). The moving direction of the valve core (21) is defined as the first direction. The pressure regulating assembly (4) includes an operating rod (41), a nut (42), a compression spring (43), a spring seat (44), and a pressure regulating diaphragm (45) arranged along the first direction. The nut (42) can move along the first direction of the pressure regulating chamber (16). The nut (42) is anti-rotatingly engaged with the inner wall of the pressure regulating chamber (16). The operating rod (41) is threadedly connected to the nut (42). The operating rod (41) is rotatably engaged with the valve cover (15). The spring seat (44) abuts against the pressure regulating diaphragm (45), and the pressure regulating diaphragm (45) abuts against the second end of the valve stem (3); the compression spring (43) abuts between the spring seat (44) and the nut (42), and the elastic force of the compression spring (43) acts on the spring seat (44), so that the spring seat (44) always has the tendency to drive the pressure regulating diaphragm (45) to move in the negative direction in the first direction; when the operating lever (41) is operated, the nut (42) moves along the first direction of the operating lever (41), so that the spring seat (44) is driven by the compression spring (43) to drive the pressure regulating diaphragm (45) to act on the valve stem (3), thereby adjusting the pressure value required to open the valve port (113).

4. A pressure reducing valve according to claim 3, characterized in that: The valve core (21) is provided with a first guide groove (211), and the first cavity (111) is provided with a second guide groove (1111) that corresponds to and cooperates with the first guide groove (211). The two ends of the balance spring (22) are respectively placed in the first guide groove (211) and the second guide groove (1111).

5. A pressure reducing valve according to claim 3, characterized in that: The voltage regulating component (4) is connected to a locking structure. When the locking structure is in the locked state, the operating lever (41) cannot be operated; when the locking structure is in the unlocked state, the operating lever (41) can be operated.

6. A pressure reducing valve according to claim 1, characterized in that: Both the first air inlet (12) and the second air inlet (13) are provided with a connecting part (5), and the connecting part (5) has a first pressing slope (51).

7. A pressure reducing valve according to claim 6, characterized in that: The pressure reducing valve also includes a connector (6) that is connected to the connecting part (5). Two adjacent valve bodies (1) are connected by the connection part (5) and the connector (6). The connector (6) has a second pressing slope (61) that is connected to the first pressing slope (51).

8. A pressure reducing valve according to claim 7, characterized in that: The connecting part (5) has a positioning notch (52), and the connecting member (6) has a positioning protrusion (62) that mates with the positioning notch (52).

9. A pressure reducing valve according to claim 8, characterized in that: The pressure reducing valve also includes a connecting block (7), which can be connected to the connecting part (5) through the connecting member (6); the connecting block (7) has an air chamber (71), and the connecting block (7) has a plurality of air ports (72) communicating with the air chamber (71). The air chamber (71) of the connecting block (7) can be connected to the first chamber (111) of the valve body (1) through one of the air ports (72).

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