Micro energy-saving pressure reducer

Abstract

The utility model discloses a kind of miniature energy-saving pressure reducer, belong to pressure reducer technical field. Including: pressure reducer main part, high-pressure chamber, low-pressure chamber and adjusting chamber are equipped in it;High-pressure chamber is equipped with pressure reduction passage between adjusting chamber, adjusting chamber is equipped with output passage between low-pressure chamber. Air inlet connector is communicated high-pressure chamber, oxygen output connector is communicated low-pressure chamber. High-pressure chamber is equipped with valve assembly and valve spring, valve assembly controls pressure reduction passage opening and closing, valve spring always provides the elastic force towards pressure reduction passage. Pressure regulating assembly is connected pressure reducer main part to form adjusting chamber, and is driven connection by ejector rod and valve assembly, ejector rod is movably arranged in pressure reduction passage, and high-pressure detection passage, which is communicated high-pressure chamber and high-pressure gauge interface at two ends, is additionally provided. The design forces output airflow to flow in the orderly path of pressure reduction passage, adjusting chamber, low-pressure chamber in turn, and high-pressure detection passage is independently arranged, avoid airflow path cross interference in traditional structure, realize more stable output characteristic.

Description

Technical Field

[0001] This utility model belongs to the field of pressure reducer technology, specifically relating to a miniature energy-saving pressure reducer. Background Technology

[0002] As a key control component in gas supply systems, pressure reducers are widely used in industrial welding, medical and other fields. Their main function is to stably reduce the pressure of high-pressure gas sources to the low-pressure working pressure required by the equipment and maintain the output pressure at a basically constant level to ensure gas safety and normal equipment operation.

[0003] In existing technologies, common oxygen pressure regulators typically include a regulator body, an inlet connector, a valve assembly, an adjusting spring, a handwheel, and pressure gauges. High-pressure gas enters the high-pressure chamber within the regulator body through the inlet connector, flows into the regulating chamber through the pressure-reducing channel controlled by the valve assembly, or directly enters the output channel, and is finally supplied to downstream equipment from the oxygen output connector. To monitor the gas source status and output pressure, the regulator is generally also equipped with high-pressure and low-pressure gauges, which are connected to the high-pressure and low-pressure chambers respectively through internal channels.

[0004] However, existing pressure reducer structures have several technical defects:

[0005] First, the high-pressure detection channel is often shared with the output channel or directly led out from the side opening of the main airflow path, which makes the high-pressure meter reading easily affected by the flow fluctuation or start-stop impact at the output end, and cannot truly reflect the remaining pressure in the gas cylinder.

[0006] Secondly, the channel used to install the top rod often serves as both the pressure tapping channel of the high-pressure gauge and the output airflow bypass, resulting in a chaotic airflow path, causing pressure feedback distortion, sluggish adjustment response, and even output pressure oscillation.

[0007] Furthermore, with the trend towards miniaturization, some pressure reducers integrate multiple functional channels into the same duct to save space, which further exacerbates airflow interference and affects pressure reduction accuracy and stability. Utility Model Content

[0008] This invention addresses the aforementioned problems in the existing technology by proposing a miniature energy-saving pressure reducer with a compact structure, clear airflow path, precise pressure control, and good pressure stabilization performance.

[0009] This utility model can be achieved through the following technical solutions:

[0010] A miniature energy-saving pressure reducer, comprising:

[0011] The pressure reducer body has a high-pressure chamber, a low-pressure chamber and an adjustment chamber inside, a pressure reduction channel is provided between the high-pressure chamber and the adjustment chamber, and an output channel is provided between the adjustment chamber and the low-pressure chamber;

[0012] An air inlet connector, which is connected to the high-pressure chamber;

[0013] An oxygen output connector, which is connected to the low-pressure chamber;

[0014] A valve assembly and a valve spring are disposed within the high-pressure chamber. The valve assembly is used to open or close the pressure-reducing channel, and the valve spring always provides the valve assembly with a spring force toward the pressure-reducing channel.

[0015] The pressure regulating component is connected to the pressure reducing device body, forming the regulating cavity between them. The pressure regulating component is connected to the valve assembly via a push rod, and the push rod is movably disposed within the pressure reducing channel.

[0016] The high-voltage detection channel has one end connected to the high-voltage chamber and the other end provided with an interface for installing a high-voltage meter.

[0017] As a further improvement of this utility model, the pressure regulating assembly includes an adjusting handwheel, an adjusting spring, and a spring top cover. The adjusting handwheel is connected to the pressure reducing device body, and the two ends of the adjusting spring are respectively connected to the adjusting handwheel and the spring top cover.

[0018] As a further improvement of this utility model, the two ends of the top rod are respectively connected to the spring top cover and the valve assembly. By rotating the adjusting handwheel, the top rod is moved to adjust the position of the valve assembly.

[0019] As a further improvement of this utility model, a gap for gas flow is reserved between the top rod and the pressure reducing channel.

[0020] As a further improvement of this utility model, the outer wall of the valve assembly is sealed to the inner wall of the high-pressure chamber.

[0021] As a further improvement of this utility model, when the valve assembly is separated from the pressure reducing channel, the pressure reducing channel is opened, and at this time the high pressure chamber, the regulating chamber, and the low pressure chamber are connected in sequence through the pressure reducing channel and the output channel.

[0022] As a further improvement of this utility model, it also includes a low-pressure gauge, which is connected to the low-pressure chamber and used to detect the output pressure.

[0023] As a further improvement of this utility model, when the valve assembly closes the pressure reducing channel, no airflow enters the high-pressure detection channel; when the valve assembly opens the pressure reducing channel, airflow flows into the high-pressure detection channel from the valve port of the valve assembly and the pressure reducing channel.

[0024] As a further improvement of this utility model, a filter is installed in the air intake channel of the air intake connector, and the valve spring presses the filter against the stepped surface opened in the air intake channel of the air intake connector.

[0025] As a further improvement of this utility model, the pressure regulator body is connected to an external gas cylinder through the air inlet connector. When the pressure regulator body is connected to the gas cylinder, the adjusting handwheel is located at the outermost end of the pressure regulator body along the connecting axis. The outermost edge of the adjusting handwheel does not exceed the vertical projection plane of the cylindrical surface where the maximum diameter of the gas cylinder is located and leaves a distance.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Significantly improved pressure and flow stability: By forcing the output airflow to flow sequentially through the pressure reducing channel → regulating chamber → low-pressure chamber, and by setting up the high-pressure detection channel independently, the cross-interference of airflow paths in the traditional structure is avoided, effectively suppressing pressure fluctuations and transient impacts, and achieving more stable output characteristics.

[0028] 2. Dual gauge readings are accurate and reliable, providing more realistic monitoring: The high-pressure detection channel is connected to the high-pressure chamber only when the pressure-reducing channel is open, and it is not shared with the output gas path; the low-pressure chamber is connected to the regulating chamber through an independent output channel, so that the high-pressure gauge accurately reflects the remaining pressure of the gas cylinder, and the low-pressure gauge accurately monitors the output pressure. The two do not interfere with each other, significantly improving the accuracy and safety of pressure monitoring.

[0029] 3. Excellent anti-drop protection performance: The adjusting handwheel is located at the outermost end of the pressure regulator body along the axis, but its outermost edge does not exceed the vertical projection plane of the cylindrical surface where the maximum diameter of the gas cylinder is located, and a safe distance is left; when the gas cylinder is accidentally dropped or tipped over, the gas cylinder body will contact the ground first, and the pressure regulator body and adjusting handwheel will be effectively protected, avoiding shell breakage, internal component damage or seal failure due to impact, greatly improving the safety of use and product reliability. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the miniature energy-saving pressure reducer of this utility model;

[0031] Figure 2 This is a schematic diagram showing the positions of the high-pressure gauge and the low-pressure gauge in the miniature energy-saving pressure reducer of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the miniature energy-saving pressure reducer of this utility model after it is connected to the gas cylinder.

[0033] In the diagram, 100 is the main body of the pressure reducer; 110 is the high-pressure chamber; 120 is the low-pressure chamber; 130 is the regulating chamber; 140 is the pressure reducing channel; and 150 is the output channel.

[0034] 200. Air intake connector; 210. Valve assembly; 220. Valve spring; 230. Filter;

[0035] 300. Oxygen output connector;

[0036] 400. Pressure regulating assembly; 410. Adjusting handwheel; 420. Adjusting spring; 430. Spring top cover; 440. Push rod;

[0037] 500. High voltage meter; 510. High voltage detection channel;

[0038] 600. Low-pressure gauge;

[0039] 700, gas cylinder. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0041] like Figures 1-3 As shown, this utility model provides a miniature energy-saving pressure reducer, comprising:

[0042] The pressure reducer body 100 has a high pressure chamber 110, a low pressure chamber 120 and an adjustment chamber 130. A pressure reducing channel 140 is provided between the high pressure chamber 110 and the adjustment chamber 130, and an output channel 150 is provided between the adjustment chamber 130 and the low pressure chamber 120.

[0043] The air inlet connector 200 is connected to the high-pressure chamber 110;

[0044] Oxygen output connector 300 is connected to low-pressure chamber 120;

[0045] The valve assembly 210 and the valve spring 220 are both disposed in the high-pressure chamber 110. The valve assembly 210 is used to open or close the pressure relief channel 140, and the valve spring 220 always provides the valve assembly 210 with a spring force toward the pressure relief channel 140.

[0046] The pressure regulating component 400 is connected to the pressure reducing body 100, forming an regulating cavity 130 between them. The pressure regulating component 400 is connected to the valve component 210 via a push rod 440, which is movably disposed within the pressure reducing channel 140.

[0047] The high-voltage detection channel 510 has one end connected to the high-voltage chamber 110 and the other end has an interface for installing the high-voltage meter 500.

[0048] In use, the pressure reducer is connected to the high-pressure gas cylinder 700 through the inlet connector 200. High-pressure gas enters the high-pressure chamber 110. In the initial state, the valve assembly 210 closes the pressure reducing channel 140 under the action of the valve spring 220, preventing gas flow. When the user rotates the pressure regulating component 400, the push rod 440 moves axially, pushing the valve assembly 210 to overcome the elastic force of the valve spring 220, causing the pressure reducing channel 140 to open. The high-pressure gas then flows into the regulating chamber 130 and enters the low-pressure chamber 120 through the output channel 150, and is finally output from the oxygen output connector 300.

[0049] At the same time, the high-pressure detection channel 510 independently leads out the original pressure in the high-pressure chamber 110, which is only used to drive the high-pressure gauge 500 to display the remaining pressure of the gas cylinder 700 and does not participate in the main airflow path, while the low-pressure gauge 600 is directly connected to the low-pressure chamber 120 and detects the output pressure.

[0050] It should be noted that in traditional pressure reducers, the channel used to install the push rod 440 is often also used as the pressure tapping channel for the high-pressure gauge 500 and the output airflow bypass. This causes the high-pressure gas to be directly split from the same channel to the high-pressure gauge 500 and the output end after entering the main chamber, resulting in cross-flow paths and mutual interference. This structure is prone to causing local eddies, pressure feedback distortion, and transient flow shocks. Especially when the gas load changes, the output pressure is prone to fluctuations or oscillations.

[0051] In contrast, this application completely independently sets up the high-voltage detection channel 510, so that it only communicates with the high-voltage chamber 110 and does not intersect with the regulating chamber 130, the low-voltage chamber 120 or the output channel 150, thereby fundamentally avoiding the disturbance of the output airflow to the reading of the high-voltage meter 500.

[0052] Meanwhile, all output gases must flow sequentially through pressure reducing channel 140 → regulating chamber 130 → output channel 150. The regulating chamber 130 is formed by the pressure regulating component 400 and the pressure reducing body 100, and has a certain volume buffering effect. This design forces the airflow to pass through a controlled intermediate pressure stabilization area before entering the output end, effectively suppressing instantaneous pressure changes caused by valve opening fine-tuning or external gas fluctuations, and significantly improving the dynamic stability and regulation accuracy of the system.

[0053] Therefore, this solution achieves superior flow stability and pressure control consistency compared to existing technologies through structural innovation of functional flow channel separation, without adding additional voltage stabilizing components.

[0054] Overall, the improvements in this application have at least the following advantages:

[0055] 1. Significantly improved pressure and flow stability: By setting the high-pressure detection channel 510 independently and forcing the output airflow to pass through the pressure reducing channel 140 and the regulating chamber 130 in sequence before entering the low-pressure chamber 120, the cross-interference of airflow paths in the traditional structure is avoided, effectively suppressing pressure fluctuations and transient impacts, and achieving more stable output characteristics.

[0056] 2. The readings of the high-pressure gauge 500 and the low-pressure gauge 600 are more accurate and reliable: the high-pressure detection channel 510 is only connected to the high-pressure chamber 110 and is not shared with the output gas path; at the same time, the low-pressure chamber 120 is connected to the regulating chamber 130 through an independent output channel 150, avoiding direct disturbance of the pressure feedback area by the main airflow, so that the high-pressure gauge 500 truly reflects the gas source pressure and the low-pressure gauge 600 accurately monitors the output pressure. The readings of the two gauges do not interfere with each other and have high stability.

[0057] 3. Compact structure and safe and energy-saving: It adopts an integrated micro design, with the valve component 210 normally closed and direct adjustment response, which reduces the risk of gas leakage and material consumption, and automatically cuts off the gas supply in case of accidental disconnection, thus taking into account both energy saving and environmental protection and operational safety.

[0058] Preferably, the pressure regulating assembly 400 includes an adjusting handwheel 410, an adjusting spring 420, and a spring top cover 430. The adjusting handwheel 410 is connected to the pressure reducing body 100. The two ends of the adjusting spring 420 are respectively connected to the adjusting handwheel 410 and the spring top cover 430. The two ends of the push rod 440 are respectively connected to the spring top cover 430 and the valve assembly 210. By rotating the adjusting handwheel 410, the push rod 440 is moved to adjust the position of the valve assembly 210.

[0059] By rotating the adjusting handwheel 410, the adjusting spring 420 can be compressed or released, thereby changing the preload force applied by the spring top cover 430 to the top rod 440, thus precisely controlling the opening degree of the valve assembly 210 and achieving continuous and linear adjustment of the output pressure.

[0060] This structure is not only easy to operate and sensitive to adjustment, but also effectively buffers the impact of external vibration or sudden load changes on the valve assembly 210 because the adjusting spring 420 and the spring top cover 430 form a stable force transmission chain. This significantly improves the pressure stability and control accuracy of the pressure reducer under dynamic working conditions. At the same time, the overall layout is compact, which is conducive to the miniaturization and reliability improvement of the pressure reducer.

[0061] Preferably, a gap is reserved between the push rod 440 and the pressure reducing channel 140 for gas flow. Thus, when the pressure reducing channel 140 is opened, gas can pass through the gap between the pressure reducing channel 140 and the push rod 440 and enter the regulating chamber 130. During this process, since the cross-sectional area of ​​the channel is much smaller than that of the upstream pipe, the gas flow rate increases sharply and the static pressure decreases significantly, thereby achieving the purpose of pressure reduction.

[0062] It is worth mentioning that the solution provided in this embodiment also has a dynamic balance adjustment function to achieve automatic voltage stabilization, as explained in detail below:

[0063] Balanced state: When the output pressure stabilizes at the target value, the upward force acting on the spring top cover 430 is equal in magnitude and opposite in direction to the downward set force of the adjusting spring 420. At this time, the position of the spring top cover 430 is fixed, the position of the push rod 440 connected to it is fixed, thus the opening degree of the valve assembly 210 is fixed, the intake flow rate is equal to the output flow rate, and the system is in balance.

[0064] When the output pressure decreases: If the pressure decreases due to the use of air at the output end, the upward feedback force on the spring top cover 430 decreases, and the setting force of the adjusting spring 420 becomes dominant, pushing the spring top cover 430 and the push rod 440 downward to open the valve wider. This increases the air intake flow from the high-pressure gas cylinder 700 into the low-pressure chamber 120 through the valve assembly, thereby pushing the output pressure to rise until it returns to the target value, and the system returns to balance.

[0065] When the output pressure increases: If the output pressure increases for any reason, the upward feedback force on the spring top cover 430 increases, overcoming the spring force and pushing the spring top cover 430 and the push rod 440 to move upward. Under the action of the valve spring 220, the valve opening decreases and the air intake flow decreases, thereby causing the output pressure to drop back to the target value, and the system is balanced again.

[0066] The aforementioned dynamic balance adjustment mechanism enables the pressure reducer of this invention to quickly and automatically adjust the valve opening under complex operating conditions of fluctuating input pressure or changing output load, and to match the intake flow rate and air demand in real time, thereby effectively maintaining a highly stable output pressure.

[0067] Compared to traditional structures where pressure oscillations or response delays are caused by flow channel intersections, feedback lag, or poor mechanical transmission, this solution significantly improves pressure stabilization response speed and control accuracy by directly applying feedback force to the coaxial force transmission chain of spring top cover 430—top rod 440—valve assembly 210, combined with the buffering effect of independent adjustment chamber 130. This not only ensures the safe and reliable operation of downstream equipment but also extends the service life of the pressure reducer itself, making it particularly suitable for precision welding applications with stringent requirements for gas supply stability.

[0068] Preferably, the outer wall of the valve assembly 210 is sealed to the inner wall of the high-pressure chamber 110, ensuring that airflow can only pass through the internal channel of the valve assembly 210, thereby ensuring the controllability of the pressure reduction process and the accuracy of pressure regulation. At the same time, this design avoids internal leakage, pressure drift or regulation failure caused by poor sealing, and significantly improves the sealing reliability, pressure stabilization accuracy and long-term stability of the pressure reducer.

[0069] Preferably, when the valve assembly 210 is separated from the pressure reducing channel 140, the pressure reducing channel 140 is opened. At this time, the high-pressure chamber 110, the regulating chamber 130, and the low-pressure chamber 120 are connected in sequence through the pressure reducing channel 140 and the output channel 150. This connection path forms a clear, unidirectional, and controlled gas flow sequence. This orderly series path not only enhances the effect of pressure release in stages, but also provides a stable intermediate buffer for the regulating chamber 130, which helps to improve the stability and response consistency of the output pressure, while facilitating accurate flow matching and reliable automatic pressure regulation control.

[0070] Preferably, when the valve assembly 210 closes the pressure reducing channel 140, no airflow enters the high-pressure detection channel 510; when the valve assembly 210 opens the pressure reducing channel 140, airflow flows into the high-pressure detection channel 510 from the valve port of the valve assembly 210 and the pressure reducing channel 140.

[0071] This design ensures that the high-pressure detection channel 510 is only connected to the high-pressure chamber 110 when the pressure reducer is working normally (i.e., the pressure reducing channel 140 is open). This ensures that the pressure displayed by the high-pressure gauge 500 accurately reflects the upstream pressure under the current gas supply conditions, and avoids misreading due to residual gas or leakage when not in operation.

[0072] Preferably, a filter 230 is installed in the air intake channel of the air intake connector 200. The gas passes through the filter 230 before entering the high-pressure chamber 110, effectively intercepting particulate impurities in the gas source, thereby avoiding sealing failure, jamming or wear caused by contamination, and extending the service life of the pressure reducer body 100.

[0073] The valve spring 220 presses the filter 230 against the stepped surface opened in the air intake channel of the air intake connector 200. This structure cleverly utilizes the preload of the valve spring 220 to achieve axial positioning and sealing of the filter 230. No additional fasteners or adhesive processes are required, which simplifies the assembly process and ensures that the filter 230 will not loosen or shift under the impact of high-pressure airflow.

[0074] Preferably, the pressure regulator body 100 is connected to the external gas cylinder 700 through the air inlet connector 200. When the pressure regulator body 100 is connected to the gas cylinder 700, the adjusting handwheel 410 is located at the outermost end of the pressure regulator body 100 along the connecting axis. The outermost edge of the adjusting handwheel 410 does not exceed the vertical projection plane of the cylindrical surface where the maximum diameter of the gas cylinder 700 is located and leaves a distance.

[0075] This design ensures that in the event of accidental tipping or falling of the gas cylinder 700, the gas cylinder 700 (with its maximum diameter as the supporting profile) will first contact the ground or obstacle, while the adjusting handwheel 410 and the pressure regulator body 100 are protected because they are recessed within the outer profile of the gas cylinder 700, thus preventing the pressure regulator housing from cracking, internal components from deforming, or the seal from failing due to direct impact.

[0076] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0077] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0078] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0079] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0080] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A miniature energy-saving pressure reducer, characterized in that, include: The pressure reducer body has a high-pressure chamber, a low-pressure chamber and an adjustment chamber inside, a pressure reduction channel is provided between the high-pressure chamber and the adjustment chamber, and an output channel is provided between the adjustment chamber and the low-pressure chamber; An air inlet connector, which is connected to the high-pressure chamber; An oxygen output connector, which is connected to the low-pressure chamber; A valve assembly and a valve spring are disposed within the high-pressure chamber. The valve assembly is used to open or close the pressure-reducing channel, and the valve spring always provides the valve assembly with a spring force toward the pressure-reducing channel. The pressure regulating component is connected to the pressure reducing device body, forming the regulating cavity between them. The pressure regulating component is connected to the valve assembly via a push rod, and the push rod is movably disposed within the pressure reducing channel. The high-voltage detection channel has one end connected to the high-voltage chamber and the other end provided with an interface for installing a high-voltage meter.

2. The miniature energy-saving pressure reducer according to claim 1, characterized in that, The pressure regulating assembly includes an adjusting handwheel, an adjusting spring, and a spring top cover. The adjusting handwheel is connected to the pressure reducing device body, and the two ends of the adjusting spring are respectively connected to the adjusting handwheel and the spring top cover.

3. A miniature energy-saving pressure reducer according to claim 2, characterized in that, The top rod is connected to the spring top cover and the valve assembly at both ends, respectively. The position of the valve assembly can be adjusted by rotating the adjusting handwheel to move the top rod.

4. A miniature energy-saving pressure reducer according to claim 1, characterized in that, A gap is provided between the push rod and the pressure reducing channel to allow gas to flow.

5. A miniature energy-saving pressure reducer according to claim 1, characterized in that, The outer wall of the valve assembly is sealed to the inner wall of the high-pressure chamber.

6. A miniature energy-saving pressure reducer according to claim 1, characterized in that, When the valve assembly separates from the pressure reducing channel, the pressure reducing channel opens, and at this time the high-pressure chamber, the regulating chamber, and the low-pressure chamber are connected in sequence through the pressure reducing channel and the output channel.

7. A miniature energy-saving pressure reducer according to claim 1, characterized in that, It also includes a low-pressure gauge, which is connected to the low-pressure chamber and used to detect the output pressure.

8. A miniature energy-saving pressure reducer according to claim 1, characterized in that, When the valve assembly closes the pressure reducing channel, no airflow enters the high-pressure detection channel. When the valve assembly opens the pressure reducing channel, airflow flows into the high-pressure detection channel from the valve assembly and the valve port of the pressure reducing channel.

9. A miniature energy-saving pressure reducer according to claim 1, characterized in that, A filter is installed in the air intake channel of the air intake connector, and the valve spring presses the filter against the stepped surface opened in the air intake channel of the air intake connector.

10. A miniature energy-saving pressure reducer according to claim 2, characterized in that, The pressure reducer body is connected to an external gas cylinder through the air inlet connector. When the pressure reducer body is connected to the gas cylinder, the adjusting handwheel is located at the outermost end of the pressure reducer body along the connecting axis. The outermost edge of the adjusting handwheel does not exceed the vertical projection plane of the cylindrical surface where the maximum diameter of the gas cylinder is located and leaves a distance.

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