Gas pressure reducer

Abstract

The utility model discloses a kind of gas pressure reducer, and the pressure reducer main body includes shell body, air inlet unit is arranged below shell body, gas cavity in shell body, the end of shell body away from air inlet unit is provided with first gas outlet and second gas outlet;Adjusting assembly is arranged in the pressure reducer main body;Second gas outlet is opened and closed by adjusting assembly;Gas is entered into gas cavity by air inlet unit, and is discharged by first gas outlet to form first air passage;Gas is entered into gas cavity by air inlet unit, and second gas outlet is opened by operating adjusting assembly, gas is discharged by second gas outlet and first gas outlet simultaneously to form second air passage;First air passage is in normal open state, the utility model structure design is reasonable, by being provided with first air passage and second air passage, so that user can select different air passage in different use environment, first air passage is in normal open state, so that gas will be continuously discharged from first air passage without interruption.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulators, and more particularly to a gas pressure regulator. Background Technology

[0002] In high-risk work environments such as mining and field exploration, it is necessary to supply oxygen to personnel in emergency situations to ensure their safety. During the oxygen supply process, the high-pressure oxygen in the cylinders needs to be converted into stable, low-pressure oxygen before it can be delivered to personnel. This requires the use of a gas pressure regulator, a device specifically designed to reduce high-pressure gas to a safe operating pressure.

[0003] A gas pressure regulator connects to a gas cylinder and a breathing bag. After the cylinder valve is opened, the gas inside is depressurized by the regulator and enters the breathing bag to provide oxygen to personnel. In addition, most gas pressure regulators have a manually controllable vent. Opening the vent when a person is in a state of extreme oxygen deficiency can further increase the oxygen supply. Closing the vent when only normal oxygen supply is needed reduces oxygen consumption and allows for a longer period of oxygen supply. However, some gas pressure regulators only allow adjustment of the gas output, which cannot meet or guarantee a continuous output for extended periods. Accidental activation or other situations can cause the vent to close, preventing gas delivery and creating a safety hazard. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a gas pressure regulator in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A gas pressure regulator includes a pressure regulator body, the pressure regulator body including an outer shell, an air inlet unit disposed below the outer shell, an inner air chamber disposed above the air inlet unit, and an air outlet unit disposed at the end of the outer shell away from the air inlet unit; the air outlet unit includes a first air outlet and a second air outlet; an adjustment component is disposed within the pressure regulator body; the second air outlet is opened and closed by the adjustment component; gas enters the air chamber through the air inlet unit and is discharged through the first air outlet to form a first air passage; gas enters the air chamber through the air inlet unit, and the adjustment component is operated to open the second air outlet, and gas is discharged simultaneously through the second air outlet and the first air outlet to form a second air passage; the first air passage is in a normally open state.

[0007] The aforementioned components achieve the following effects: by setting up an air intake unit, gas is introduced; by setting up an air chamber, gas is stored; by setting up an air outlet unit, gas is discharged from the air chamber; by setting up an adjustment component, the discharge switching between different air channels is adjusted; by setting up a first air channel and a second air channel, users can select different air channels in different usage environments. The first air channel is in a normally open state, so that gas will be continuously discharged from the first air channel without interruption, and the pressure reducer body will not be unable to discharge gas due to external forces affecting the adjustment component.

[0008] Preferably, the adjustment assembly includes an air guide tube and an adjustment unit; the adjustment unit and the air guide tube are separable or connected in contact; a first placement part and a second placement part are provided inside the outer shell; the air guide tube is disposed in the first placement part, and the adjustment unit is rotatably connected in the second placement part.

[0009] The aforementioned components achieve the following effects: by providing a gas guide tube, they facilitate the export of gas; by providing an adjustment unit that can be separated from or in contact with the gas guide tube, the user can operate the adjustment unit to control the flow rate and opening / closing of the gas into the gas guide tube; by providing a first placement part, they serve to place the gas guide tube; and by providing a second placement part, with the adjustment unit rotatably connected within the second placement part, they serve to place and adjust the adjustment unit.

[0010] Preferably, two sealing grooves extend from the outer peripheral wall of the air guide tube; a sealing ring is provided in the sealing groove; the sealing ring abuts against the inner wall of the first placement part; an air guide part is provided on the inner wall of the air guide tube; an air guide hole is provided on the air guide part; the air guide hole is connected to the first placement part; and the first placement part is connected to the second air outlet part.

[0011] The aforementioned components achieve the following effects: by providing a sealing groove and a sealing ring within the sealing groove, the sealing ring abuts against the inner wall of the first placement part, thus sealing the gas and preventing leakage; by providing a gas guide part, the gas is guided; by providing a gas guide hole, the gas is discharged; and after passing through the gas guide hole, the gas passes through the first placement part and is discharged from the second gas outlet.

[0012] Preferably, the adjusting unit includes an adjusting part, an adjusting rod and a sealing plug; the adjusting part is arranged at one end of the adjusting rod extending out of the second placement part; threads for mating connection are arranged on the inner wall of the second placement part and the outer wall of the adjusting rod; a limiting part is arranged on the inner wall of the second placement part and contracts inwards; the threads of the second placement part are arranged on the limiting part; a placement groove is arranged at one end of the adjusting rod away from the adjusting part; the opening of the placement groove faces the air guide pipe; the sealing plug is arranged in the placement groove; the diameter of the placement groove is at least not less than the diameter of the second placement part at the limiting part; a sealing ring and a sealing groove are further arranged between the placement groove and the limiting part.

[0013] The effects achieved by the above components are as follows: By providing the adjusting part, it is convenient for users to operate. By providing the adjusting rod, the user can perform linkage operation on the adjusting rod after operating through the adjusting part; by providing the threads, the adjusting unit rotates through the threads; by providing the limiting part, it plays a role in connecting with the adjusting rod; by providing the placement groove, it is used to place the sealing plug so that the sealing plug can resist and seal the air guide pipe; the diameter of the placement groove is at least not less than the diameter of the second placement part at the limiting part, preventing the user from rotating too much and causing the adjusting component to fall off from the second placement part.

[0014] Preferably, air outlet shells are arranged on both the first air outlet part and the second air outlet part; a fixing groove is arranged on the outer shell body; the air outlet shell is arranged in the fixing groove; a flow limiting plate is arranged between the bottom of the fixing groove and the air outlet shell; flow limiting holes are arranged on the flow limiting plate.

[0015] The effects achieved by the above components are as follows: By providing the fixing groove for placing the air outlet shell, and by providing the flow limiting plate and the flow limiting holes, it plays a role in limiting the flow of the gas in the air cavity and discharging it, preventing too much gas from being discharged at one time.

[0016] Preferably, a pressure relief unit is further arranged on the outer shell body; the pressure relief unit is communicated with the air cavity.

[0017] The effects achieved by the above components are as follows: By providing the pressure relief unit, it plays a role in preventing the pressure in the air cavity from being too high and causing damage to the pressure reducer main body.

[0018] Preferably, a manual air outlet structure is further arranged above the outer shell body; a plug and a push rod are arranged on the manual air outlet structure; the plug is limited and slides in the air cavity through the push rod.

[0019] The effects achieved by the above components are as follows: By providing the manual air outlet structure, in special cases, the user can operate the manual air outlet structure to quickly discharge the gas in the air cavity. By providing the plug, it plays a sealing role, and by providing the push rod, it plays a driving role in opening and closing the plug.

[0020] Preferably, the air intake unit is provided with an air intake connection part; the end of the air intake connection part is provided with a filter structure; the air intake unit is provided with an air intake guide part; the air intake guide part is located above the filter structure and communicates with the air chamber.

[0021] The above-mentioned components achieve the following effects: by setting up the air inlet connection, they serve to connect to the gas tank; by setting up the filter structure, they serve to filter some impurities in the gas; and by setting up the gas guide, they serve to guide the gas into the gas chamber.

[0022] Compared with the prior art, the advantages of this utility model are as follows: by setting an air intake unit, it plays the role of introducing gas; by setting an air chamber, it plays the role of storing gas; by setting an air outlet unit, it plays the role of exporting gas from the air chamber; by setting an adjustment component, it plays the role of switching and adjusting the export of different air channels; by setting a first air channel and a second air channel, it allows users to select different air channels in different usage environments. The first air channel is in a normally open state, so that gas will be continuously discharged from the first air channel without interruption. The pressure reducer body will not be unable to discharge gas due to the influence of external force on the adjustment component. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is the extension of the present utility model. Figure 1 A schematic diagram of the structural cross-section of section line AA;

[0025] Figure 3 This is the extension of the present utility model. Figure 1 A schematic diagram of the structural cross-section of section line BB.

[0026] Reference numerals: 1. Pressure reducer body; 11. Outer shell; 12. Air chamber; 13. First placement part; 14. Second placement part; 15. Pressure relief unit; 2. Air inlet unit; 21. Air inlet connection part; 22. Filter structure; 23. Air inlet guide part; 3. Air outlet unit; 31. First air outlet part; 32. Second air outlet part; 33. Air outlet shell; 34. Fixing groove; 35. Flow limiting plate; 36. Flow limiting hole; 4. Adjustment component; 41. Air guide pipe; 42. Adjustment unit; 43. Sealing groove; 44. Sealing ring; 45. Air guide part; 46. Air guide hole; 47. Adjustment part; 48. Adjustment rod; 49. Sealing plug; 411. Limiting part; 412. Placement groove; 5. Manual air outlet structure; 51. Plug; 52. Push rod. Detailed Implementation

[0027] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0028] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., 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.

[0029] Furthermore, in addition to indicating orientation or positional relationship, the aforementioned terms may also be used to indicate other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in this utility model can be understood according to the specific circumstances.

[0030] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts. The connection methods described herein are existing technologies without any modifications and are common knowledge to those skilled in the art. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 3As shown, this utility model provides a gas pressure regulator, including a pressure regulator body 1. The pressure regulator body 1 includes an outer shell 11, an air inlet unit 2 is disposed below the outer shell 11, an air chamber 12 is disposed inside the outer shell 11 and above the air inlet unit 2, and an air outlet unit 3 is disposed at the end of the outer shell 11 away from the air inlet unit 2; the air outlet unit 3 includes a first air outlet 31 and a second air outlet 32; an adjustment component 4 is disposed inside the pressure regulator body 1; the second air outlet 32 ​​is opened and closed by the adjustment component 4; gas enters the air chamber 12 through the air inlet unit 2 and is discharged through the first air outlet to form a first air passage; gas enters the air chamber 12 through the air inlet unit 2, and the adjustment component 4 is operated to open the second air outlet 32, and gas is discharged simultaneously through the second air outlet 32 ​​and the first air outlet 31 to form a second air passage; the first air passage is in a normally open state. The air intake unit 2 is designed to introduce gas, and the air chamber 12 is designed to store gas. The air outlet unit 3 is designed to discharge gas from the air chamber 12. The adjustment component 4 is designed to switch between different air outlets. The design of the first air outlet and the second air outlet allows users to select the appropriate air outlet for different usage environments. The first air outlet is always open, ensuring a continuous and uninterrupted discharge of gas. External forces affecting the adjustment component 4 will not prevent the pressure reducer body 1 from discharging gas.

[0033] The regulating component 4 includes a gas guide tube 41 and an regulating unit 42; the regulating unit 42 and the gas guide tube 41 are detachable or connected in contact; a first placement part 13 and a second placement part 14 are provided inside the outer casing 11; the gas guide tube 41 is disposed in the first placement part 13, and the regulating unit 42 is rotatably connected in the second placement part 14. The gas guide tube 41 serves to guide gas out; the regulating unit 42, which can be detached or connected in contact with the gas guide tube 41, allows the user to control the flow rate and opening / closing of the gas into the gas guide tube 41 by operating the regulating unit 42; the first placement part 13 serves to place the gas guide tube 41; and the second placement part 14, with the regulating unit 42 rotatably connected in the second placement part 14, serves to place and regulate the regulating unit 42.

[0034] Two sealing grooves 43 extend from the outer peripheral wall of the gas guide pipe 41; a sealing ring 44 is provided in the sealing groove 43; the sealing ring 44 abuts against the inner wall of the first placement part 13; a gas guide part 45 is provided on the inner wall of the gas guide pipe 41; a gas guide hole 46 is provided on the gas guide part 45; the gas guide hole 46 is connected to the first placement part 13; the first placement part 13 is connected to the second gas outlet part 32. By providing the sealing groove 43 and the sealing ring 44 in the sealing groove 43, which abuts against the inner wall of the first placement part 13, the gas is sealed, preventing leakage; the gas guide part 45 guides the gas; the gas guide hole 46 discharges the gas; and the gas passes through the gas guide hole 46, the first placement part 13, and then is discharged from the second gas outlet part 32.

[0035] The adjustment unit 42 includes an adjustment part 47, an adjustment rod 48, and a sealing plug 49. The adjustment part 47 is located at one end of the adjustment rod 48 extending out of the second placement part 14. The inner wall of the second placement part 14 and the outer wall of the adjustment rod 48 are provided with threads for mating connection. A limiting part 411 is provided inwardly on the inner wall of the second placement part 14. The threads of the second placement part 14 are provided on the limiting part 411. A placement groove 412 is provided at the end of the adjustment rod 48 away from the adjustment part 47. The opening of the placement groove 412 faces the air guide tube 41. The sealing plug 49 is located in the placement groove 412. The diameter of the placement groove 412 is at least not less than the diameter of the second placement part 14 at the limiting part 411. A sealing ring 44 and a sealing groove 43 are also provided between the placement groove 412 and the limiting part 411. The adjustment part 47 facilitates user operation. The adjustment rod 48 is provided so that the user can operate the adjustment part 47 to perform a linkage operation on the adjustment rod 48; the thread is provided so that the adjustment unit 42 can rotate through the thread; the limiting part 411 is provided so as to connect with the adjustment rod 48; the placement groove 412 is provided so as to place the sealing plug 49 so that the sealing plug 49 can abut against the air guide tube 41 to seal it; the diameter of the placement groove 412 is at least not less than the diameter of the second placement part 14 at the limiting part 411 to prevent the user from rotating it too much and causing the adjustment component 4 to fall out of the second placement part 14.

[0036] Both the first air outlet 31 and the second air outlet 32 ​​are provided with air outlet shells 33; the outer shell 11 is provided with a fixing groove 34; the air outlet shell 33 is placed in the fixing groove 34; a flow limiting plate 35 is provided between the bottom of the fixing groove 34 and the air outlet shell 33; the flow limiting plate 35 is provided with a flow limiting hole 36. By providing a fixing groove 34 for placing the air outlet shell 33, and by providing a flow limiting plate 35 and a flow limiting hole 36, the gas in the air chamber 12 is limited and discharged, preventing excessive gas from being discharged at one time.

[0037] The outer casing 11 is also provided with a pressure relief unit 15; the pressure relief unit 15 is interconnected with the air chamber 12. By providing the pressure relief unit 15, excessive pressure in the air chamber 12 is prevented from causing damage to the pressure regulator body 1.

[0038] A manual venting structure 5 is also provided above the outer casing 11; the manual venting structure 5 is equipped with a plug 51 and a push rod 52; the plug 51 slides within the air chamber 12 by means of the push rod 52. By providing the manual venting structure 5, the user can operate the manual venting structure 5 to quickly release the gas in the air chamber 12 under special circumstances. The plug 51 provides a sealing function, and the push rod 52 drives the opening and closing of the plug 51.

[0039] The air intake unit 2 is provided with an air intake connection part 21; a filter structure 22 is provided at the end of the air intake connection part 21; an air intake guide part 23 is provided on the air intake unit 2; the air intake guide part 23 is located above the filter structure 22 and communicates with the air chamber 12. The air intake connection part 21 serves to connect to the gas tank; the filter structure 22 filters some impurities in the gas; and the air guide part facilitates the flow of gas into the air chamber 12.

[0040] In this embodiment 1, when the user selects the first airway for use, the air inlet connection 21 can be connected to the air tank first. At this time, the gas will enter the air inlet guide 23 from the filter structure 22, and then enter the air chamber 12. When the gas passes through the first air outlet 31, the gas will be discharged in a restricted manner because the flow restriction hole 36 is provided. An oxygen inhalation tube will be fitted on the outer shell 11 for the user to inhale oxygen.

[0041] In this embodiment 2, when the user selects the second airway for use, the inlet connection 21 can be connected to the air tank first. At this time, the gas will enter the inlet guide 23 from the filter structure 22, and then enter the air chamber 12. When the gas passes through the first outlet 31, it will be discharged in a restricted manner because of the flow restriction hole 36. The user can also rotate the adjustment component 4 to separate the sealing plug 49 from the air guide 45. Then the gas enters the air guide 45 and flows from the air guide hole 46 to the second outlet 32, and then is discharged through the flow restriction hole 36. An oxygen inhalation tube will be fitted on the outside of the outer shell 11 for the user to inhale oxygen.

[0042] The filter structure 22 described in this utility model can be any structure that can filter impurities in gas, and is not limited to any particular structure. This structural design is a conventional and well-known structural design in the hands of those skilled in the art, and is therefore known to them.

[0043] The connection method between the gas tank and the oxygen inhalation tube in this utility model is a conventional and well-known connection method for those skilled in the art, and does not require further explanation.

[0044] In this invention, when the pressure of the gas tank is 20MPa-5MPa, the oxygen supply of the flow-limiting orifice 36 of the first gas passage should not be less than 0.5L / min, and the oxygen supply of the flow-limiting orifice 36 of the second gas passage should not be less than 2.1 L / min.

[0045] The first and second airways described in this utility model have been described in detail, so there is no need to include them in the accompanying drawings.

[0046] The pressure relief unit 15 described in this utility model can be any structure that can release air pressure when the air pressure in the air chamber 12 is too high, and is not limited to any particular structure. This structural design is a conventional and well-known structural design in the hands of those skilled in the art, and is therefore known to them.

[0047] In the description of this specification, references are made to the terms "one embodiment", "some embodiments", "example", "specific example".

[0048] The descriptions using terms such as "example" or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the existing technology, and will not be described in detail here.

[0050] The above description is only a preferred embodiment of this utility model. For those skilled in the art, various modifications and variations can be made in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A gas pressure regulator, comprising a pressure regulator body, the pressure regulator body including an outer shell, an air inlet unit disposed below the outer shell, an inner air chamber within the outer shell, the air chamber being disposed above the air inlet unit, characterized in that: An air outlet unit is provided at the end of the outer casing away from the air inlet unit; the air outlet unit includes a first air outlet and a second air outlet; an adjustment component is provided inside the pressure reducer body; the second air outlet is opened and closed by the adjustment component; gas enters the air chamber through the air inlet unit and is discharged through the first air outlet to form a first air passage; gas enters the air chamber through the air inlet unit, and the adjustment component is operated to open the second air outlet, and gas is discharged through the second air outlet and the first air outlet simultaneously to form a second air passage; the first air passage is in a normally open state.

2. A gas pressure regulator according to claim 1, characterized in that: The adjustment assembly includes an air guide tube and an adjustment unit; the adjustment unit and the air guide tube are separable or connected in contact; a first placement part and a second placement part are provided inside the outer shell; the air guide tube is disposed in the first placement part, and the adjustment unit is rotatably connected in the second placement part.

3. A gas pressure regulator according to claim 2, characterized in that: Two sealing grooves extend from the outer peripheral wall of the air guide tube; a sealing ring is provided in the sealing groove; the sealing ring abuts against the inner wall of the first placement part; an air guide part is provided on the inner wall of the air guide tube; an air guide hole is provided on the air guide part; the air guide hole is connected to the first placement part; the first placement part is connected to the second air outlet part.

4. A gas pressure regulator according to claim 3, characterized in that: The adjustment unit includes an adjustment part, an adjustment rod, and a sealing plug; the adjustment part is located at one end of the adjustment rod extending out of the second placement part; the inner wall of the second placement part and the outer wall of the adjustment rod are provided with mating threads; a limiting part is provided on the inner wall of the second placement part that contracts inward; the threads of the second placement part are located on the limiting part; a placement groove is provided at the end of the adjustment rod away from the adjustment part; the opening of the placement groove faces the air guide tube; the sealing plug is located in the placement groove; the diameter of the placement groove is at least not less than the diameter of the second placement part at the limiting part; a sealing ring and a sealing groove are also provided between the placement groove and the limiting part.

5. A gas pressure regulator according to claim 1, characterized in that: Both the first and second air outlets are provided with air outlet shells; the outer shell is provided with a fixing groove; the air outlet shell is disposed in the fixing groove; a flow limiting plate is provided between the bottom of the fixing groove and the air outlet shell; and a flow limiting hole is provided on the flow limiting plate.

6. A gas pressure regulator according to claim 1, characterized in that: The outer casing is also provided with a pressure relief unit; the pressure relief unit is connected to the air chamber.

7. A gas pressure regulator according to claim 1, characterized in that: A manual air outlet structure is also provided on the upper part of the outer shell; the manual air outlet structure is provided with a plug and a push rod; the plug slides within the air chamber by means of the push rod.

8. A gas pressure regulator according to claim 1, characterized in that: The air intake unit is provided with an air intake connection part; the end of the air intake connection part is provided with a filter structure; the air intake unit is provided with an air intake guide part; the air intake guide part is located above the filter structure and is connected to the air chamber.

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