Pressure reducer

Abstract

The utility model belongs to the technical field of pressure reducers, and particularly relates to a pressure reducer which comprises a pressure reducer shell. An air outlet hole I; an air supply hole; a radial hole is also included; the piston assembly is arranged in the radial hole in a sliding mode, and a flow channel communicating the radial hole with the air supply hole is formed below the piston assembly; an elastic member; the circular ring is arranged on the outer side of the pressure reducer shell in a sleeving manner and can rotate relative to the pressure reducer shell; wherein a containing groove matched with the piston assembly is formed in the radial inner side of the circular ring, and in the rotating process of the circular ring, the piston assembly can move in a reciprocating mode in the axial direction of the piston assembly so as to block or open the flow channel so as to open the flow channel. The pressure reducer has the advantages that the circular ring, the piston assembly and the elastic piece are used in cooperation, when the continuous oxygen supply amount of the pressure reducer needs to be increased, the first air outlet hole can be opened and closed only by shifting the rotating ring with the hand, operation is easy and convenient, and interference of the installation position of the pressure reducer is not likely to happen.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure regulators, and particularly relates to a pressure regulator. Background Art

[0002] A pressure regulator (pressure reducing regulator) is a device used to reduce and stabilize high-pressure fluids (gases or liquids) to the required low-pressure output. Its core function is to control pressure and ensure safety.

[0003] The gas pressure regulator is connected to a gas cylinder and a breathing bag. After the valve of the gas cylinder is opened, the gas in the gas cylinder enters the breathing bag after being decompressed by the gas pressure regulator for supplying oxygen to personnel. In addition, most gas pressure regulators are also provided with air outlets that can be manually controlled to open and close. When personnel are in a state of extreme oxygen deficiency, opening the air outlet can further increase the oxygen supply. When the user only needs normal oxygen supply, closing the air outlet can reduce oxygen consumption to maintain oxygen supply for the user for a longer time.

[0004] Chinese Patent CN119393673A discloses a gas pressure regulator, which includes a housing and a shell head provided at the end of the housing. An air outlet valve is provided on the shell head, and an air outlet hole is provided on the air outlet valve. A gas supply hole and a sealing groove communicated with the air outlet hole are provided in the housing. A plug is threadedly connected to the housing and fits into the sealing groove. A gas supply channel communicating the sealing groove and the gas supply hole is provided below the plug. After the plug is screwed into the gas supply channel, it blocks the gas supply channel to separate the sealing groove and the gas supply hole. A knob located outside the housing is provided on the plug. An annular groove located between the shell head and the plug is further provided on the outer side of the housing, and a breathing bag is sleeved on the annular groove.

[0005] The above gas pressure regulator adjusts the oxygen supply by manipulating the knob, but the applicant found that there are still the following problems:

[0006] The position of the knob on the gas pressure regulator is generally fixed. The tail of the gas pressure regulator is connected to the gas outlet of the valve of the gas cylinder through a thread. In an ideal state, after the gas pressure regulator is assembled with the valve of the gas cylinder, the position of its knob should be in the middle of the upper end of the gas pressure regulator for easy operation by personnel. However, due to production errors, after actual assembly, the orientation of its knob is likely to shift to both sides or below the pressure regulator, which is not convenient for personnel to operate in case of emergency;

[0007] The knob of the gas pressure regulator is small. In the case of long-term non-use, the plug on the knob is likely to get stuck with the housing and is difficult to turn, which is not convenient for personnel to operate in case of emergency.

[0008] Therefore, it is urgent to design a pressure regulator to solve the above problems. Summary of the Utility Model

[0009] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide a pressure reducer to solve the above problems.

[0010] The technical solution of the present utility model is realized as follows: A pressure reducer includes: a pressure reducer housing;

[0011] An air outlet one, which is opened on one side of the end of the pressure reducer housing;

[0012] An air supply hole, which is arranged inside the pressure reducer housing; It further includes:

[0013] A radial hole, which is opened on the radial outer side of the pressure reducer housing and is communicated with the air outlet one;

[0014] A piston assembly, which is slidably arranged in the radial hole, and a flow channel communicating the radial hole and the air supply hole is arranged below the piston assembly;

[0015] An elastic member, which is telescopically arranged between the piston assembly and the radial hole, and the piston assembly at least partially extends out of the upper orifice of the radial hole through the elastic member.

[0016] When the piston assembly moves relative to the radial hole under an external force, the elastic member is compressed to drive the piston assembly to reset;

[0017] A ring, which is sleeved on the outer side of the pressure reducer housing and can rotate relative to the pressure reducer housing;

[0018] Wherein, a receiving groove adapted to the piston assembly is opened on the radial inner side of the ring. When the ring rotates, the piston assembly can reciprocate along its axial direction to block or open the flow channel.

[0019] Further, the piston assembly includes:

[0020] A piston rod, which includes a rod body and a plug head connected to the lower end of the rod body for blocking the flow channel;

[0021] A sealing ring one, which is sleeved on the radial outer side of the rod body;

[0022] Wherein, a ring groove one for the sealing ring one to snap into is opened on the radial outer side of the rod body;

[0023] Wherein, the elastic member is a compression spring, one end of the compression spring abuts against the rod body, and the other end abuts against the bottom of the radial hole.

[0024] Further, a ring groove two is arranged between the plug head and the rod body, and a sealing ring two is sleeved on the ring groove two.

[0025] Further, the upper end of the rod body is arc-shaped.

[0026] Further, a guiding inclined surface for extruding the piston assembly is arranged on one side of the receiving groove.

[0027] Furthermore, it also includes:

[0028] The arc-shaped guide groove is arranged on a side of the reducer housing radially outward and away from the radial hole;

[0029] Mounting hole: a mounting hole corresponding to the arc-shaped guide groove is opened on the radial outer side of the ring;

[0030] The limiting member is installed in the installation hole and at least partially extends into the arc-shaped guide groove.

[0031] Furthermore, a plurality of arc-shaped grooves spaced apart in the circumferential direction are provided on the radial outer side of the circular ring.

[0032] Furthermore, a switch mark is arranged on the radial outer side of the ring, and the switch mark is adjacent to the accommodating groove.

[0033] Furthermore, it also includes:

[0034] Air outlet hole 2: one side of the end of the pressure reducer housing is also provided with an air outlet hole 2, and both the air outlet hole 1 and the air outlet hole 2 are fixedly installed with a quantitative valve;

[0035] The air outlet hole 3 is provided in the middle of the end of the pressure reducer housing, the outer opening of the air outlet hole 3 is funnel-shaped, and the air outlet hole 3 is connected with the air supply hole;

[0036] A piston assembly is installed in the housing of the pressure reducer;

[0037] The self-compensating valve is located in the housing of the pressure reducer and is elastically abutted against the inner opening of the air outlet hole 3 through the self-compensating spring to seal the air outlet hole 3.

[0038] A touch rod, one end of which is fixedly connected with a touch ball, and the other end of which extends into the air outlet hole 3 and is connected and fixed with the self-filling valve;

[0039] The air supply hole is arranged in the middle of the piston group.

[0040] Furthermore, it also includes:

[0041] The air outlet hole 4 is provided at one side of the end of the pressure reducer housing and is connected with the air supply hole;

[0042] The safety valve is installed in the air outlet hole 4.

[0043] The beneficial effects of the utility model are:

[0044] Through the coordinated use of the ring, the piston assembly and the elastic member, when the pressure reducer needs to increase the continuous oxygen supply, the air outlet hole 1 can be opened and closed by simply turning the rotating ring by hand. The operation is simple and convenient, and is not easily interfered by the installation position of the pressure reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0046] Figure 1 Schematic diagram of the overall structure of the pressure reducer in the specific embodiment of the present invention Figure 1 ;

[0047] Figure 2 Schematic diagram of the overall structure of the pressure reducer in the specific embodiment of the present invention Figure 2 ;

[0048] Figure 3 Front view of the end of the pressure reducer in the specific embodiment of the present invention;

[0049] Figure 4 A - A cross-sectional view in the specific embodiment of the present invention;

[0050] Figure 5 B - B cross-sectional view in the specific embodiment of the present invention;

[0051] Figure 6 In the specific embodiment of the present invention Figure 4 Enlarged view of A;

[0052] Figure 7 C - C cross-sectional view in the specific embodiment of the present invention;

[0053] Figure 8 Schematic diagram of the overall structure of the pressure reducer in the specific embodiment of the present invention Figure 3 。 Specific embodiment

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0055] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0056] Embodiment 1:

[0057] As Figures 1 to 8 shown, the present utility model discloses a pressure reducer, which includes: a pressure reducer housing 1;

[0058] An air outlet 2 is opened on one side of the end of the pressure reducer housing 1;

[0059] An air supply hole 3 is arranged inside the pressure reducer housing 1; and it is characterized in that it further includes:

[0060] A radial hole 4 is opened on the radial outer side of the pressure reducer housing 1 and is communicated with the air outlet 2;

[0061] A piston assembly 5 is slidably arranged in the radial hole 4, and a flow channel communicating the radial hole 4 and the air supply hole 3 is arranged below the piston assembly 5;

[0062] An elastic member 6 is telescopically arranged between the piston assembly 5 and the radial hole 4, and the piston assembly 5 at least partially extends out of the upper orifice of the radial hole 4 through the elastic member 6.

[0063] When the piston assembly 5 moves relative to the radial hole 4 under an external force, the elastic member 6 is compressed to drive the piston assembly 5 to reset;

[0064] A ring 7 is sleeved on the outer side of the pressure reducer housing 1 and can rotate relative to the pressure reducer housing 1;

[0065] Wherein, a receiving groove 301 adapted to the piston assembly 5 is opened on the radial inner side of the ring 7. When the ring 7 rotates, the piston assembly 5 can reciprocate in its axial direction to block or open the flow channel. Specifically, the groove wall of the receiving groove 301 will squeeze the piston assembly 5 to slide towards the flow channel to block the flow channel, or the elastic member 6 will squeeze the piston assembly 5 to slide towards the receiving groove 301 to open the flow channel.

[0066] The pressure reducer of the present application is used in cooperation with an oxygen supply cylinder. The tail of the pressure reducer housing is used for mating installation with the outlet valve body of the oxygen supply cylinder, and the outer edge of the end is used for socketing and mating with the breathing bag.

[0067] The second air outlet hole at the end of the housing is a long-open air outlet hole. After the outlet valve body of the oxygen supply cylinder is opened, the gas passing through the air supply hole can continuously supply gas to the breathing bag through the second air outlet hole.

[0068] If the oxygen supply demand increases, the first air outlet hole needs to be opened to increase the continuous oxygen supply amount.

[0069] The principle of opening and closing the first air outlet hole of the above pressure reducer is as follows: In the initial state, the receiving groove is located on the right side of the radial hole, and the piston assembly is limited in the radial hole by the ring. At this time, the piston assembly blocks the flow channel, and the first air outlet hole is in a normally closed state. When the first air outlet hole needs to exhaust gas, the ring is toggled by hand to move the receiving groove back to the upper part of the radial hole. The piston assembly is not blocked by the ring and is pushed upward by the elastic member through the elastic force and extends into the receiving groove. At this time, the flow channel is opened, and the compressed oxygen passes through the radial hole and then is discharged through the first air outlet hole to increase the continuous oxygen supply amount of the pressure reducer.

[0070] By adopting the above technical solution, through the combined use of the ring, the piston assembly and the elastic member, when the pressure reducer needs to increase the continuous oxygen supply amount, only the rotating ring needs to be toggled by hand to realize the opening and closing of the first air outlet hole. The operation is simple and convenient, and it is not easily interfered by the installation position of the pressure reducer.

[0071] Embodiment 2:

[0072] This embodiment provides a pressure reducer, which has the following technical features in addition to including the technical solution of the above embodiment.

[0073] Further, the piston assembly 5 includes:

[0074] A piston rod, including a rod body 51 and a plug head 52 connected to the lower end of the rod body 51 for blocking the flow channel;

[0075] A first sealing ring 53, sleeved on the outer side of the rod body 51;

[0076] Wherein, a first annular groove 54 for the first sealing ring 53 to be snapped into is formed on the outer side of the rod body 51;

[0077] Wherein, the elastic member 6 is a compression spring, one end of the compression spring abuts against the rod body 51, and the other end abuts against the bottom of the radial hole 4.

[0078] By adopting the above technical solution, the plug head is used to insert into the flow channel to block the flow channel after the piston rod moves downward, and the first sealing ring is provided to assist in closing the radial hole to prevent the compressed oxygen from leaking out through the upper orifice of the radial hole.

[0079] Example 3:

[0080] This embodiment provides a pressure reducer, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0081] Further, a second annular groove 55 is provided between the plug 52 and the rod body 51, and a second sealing ring 56 is sleeved on the second annular groove 55.

[0082] By adopting the above technical solution, the sealing effect of the plug closing the flow channel is further improved, and it is avoided that compressed oxygen leaks from the flow channel under the normally closed state.

[0083] Example 4:

[0084] This embodiment provides a pressure reducer, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0085] Further, the upper end of the rod body 51 is arc-shaped.

[0086] By adopting the above technical solution, when the circular ring rotates to close the first air outlet hole, the rotation is smoother, and the receiving groove is not easily stuck with the upper end of the rod body.

[0087] Example 5:

[0088] This embodiment provides a pressure reducer, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0089] Further, a guiding inclined surface for pressing the piston assembly 5 is provided on one side of the receiving groove 301. Specifically, the receiving groove 301 is generally in a structure similar to a right trapezoid;

[0090] In the above technical solution, the guiding inclined surface is linear. In addition to the linear shape, it can also be arc-shaped to make the movement guiding smoother;

[0091] By adopting the above technical solution, when the circular ring rotates to close the first air outlet hole, the receiving groove can gradually press the rod body through the guiding inclined surface of its right trapezoid structure, pressing the rod body downward, so that the rod body is more smoothly pressed and moved, and is not easily stuck or worn with the receiving groove.

[0092] Example 6:

[0093] This embodiment provides a pressure reducer, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0094] Further, it further includes:

[0095] An arc-shaped guiding groove 8 is provided on the side of the pressure reducer housing 1 radially away from the radial hole 4;

[0096] Mounting hole 9, a mounting hole 9 corresponding to the arc-shaped guide groove 8 is provided on the radially outer side of the ring 7;

[0097] Position-limiting member 10, installed in the mounting hole 9 and at least partially extending into the arc-shaped guide groove 8.

[0098] In the above technical solution, the arc-shaped guide groove has a certain length;

[0099] In the above technical solution, the position-limiting member is a position-limiting column fixedly installed by bonding or hot melting in the mounting hole, or can also be a columnar structure formed by bending an elastic material and clamped in the mounting hole;

[0100] By adopting the above technical solution, the axial position of the ring can be limited through the setting of the arc-shaped guide groove, avoiding the axial movement of the ring on the pressure reducer housing;

[0101] At the same time, the setting of the arc-shaped guide groove can also limit the rotation of the ring to control the rotation range of the ring, that is, the ring is restricted within the rotation interval of open or closed, avoiding unnecessary rotation and preventing misoperation.

[0102] Embodiment 7:

[0103] This embodiment provides a pressure reducer, which in addition to including the technical solution of the above embodiment, also has the following technical features.

[0104] Furthermore, a plurality of arc-shaped grooves are provided on the radially outer side of the ring 7 at circumferential intervals.

[0105] By adopting the above technical solution, it is convenient for people to grasp the ring by hand and is not easy to slip.

[0106] Embodiment 8:

[0107] This embodiment provides a pressure reducer, which in addition to including the technical solution of the above embodiment, also has the following technical features.

[0108] Furthermore, a switch mark 71 is provided on the radially outer side of the ring 7, and the switch mark 71 is adjacent to the accommodation groove 301.

[0109] By adopting the above technical solution, it is convenient for people to quickly identify the state of the first air outlet of the pressure reducer.

[0110] Embodiment 9:

[0111] This embodiment provides a pressure reducer, which in addition to including the technical solution of the above embodiment, also has the following technical features.

[0112] Furthermore, it further includes:

[0113] The second air outlet hole 11 is provided at one side of the end of the pressure reducer housing 1, and a quantitative valve 111 is fixedly installed in the air outlet hole 2 and the air outlet hole 11;

[0114] The third air outlet hole 12 is provided in the middle of the end of the pressure reducer housing 1, the outer opening of the third air outlet hole 12 is funnel-shaped, and the third air outlet hole 12 is connected with the air supply hole 3;

[0115] The piston group 13 is installed in the pressure reducer housing 1;

[0116] The self-compensating valve 14 is located in the pressure reducer housing 1 and elastically abuts against the inner opening of the air outlet hole 3 12 through the self-compensating spring 141 to seal the air outlet hole 3 12.

[0117] A touch rod 15 has a touch ball 16 fixedly connected to one end and the other end extends into the air outlet hole 3 12 and is connected and fixed to the self-replenishing valve 14;

[0118] The air supply hole 3 is opened in the middle of the piston assembly 13 .

[0119] In the above technical solution, the setting of the quantitative valve ensures that the gas can be released at a predetermined flow rate and pressure;

[0120] In the above technical solution, the second air outlet is in a normally open state;

[0121] In the above technical solution, the air outlet 3 is normally closed by squeezing the self-compensating valve through the self-compensating spring.

[0122] By adopting the above technical solution, when a large amount of oxygen is needed, by toggling the touch rod, one end of the touch rod can drive the self-replenishing valve to deflect to open the air outlet hole 3. Since the air outlet hole 3 is not provided with a quantitative valve, a large amount of oxygen can be discharged quickly to meet the oxygen supply demand.

[0123] The storage ball on the touch rod is generally used in conjunction with the air supply pressure plate in the air suction bag. The touch ball is pushed by pushing the air supply pressure plate to move the touch rod to prevent the sharp end of the touch rod from accidentally touching the air suction bag and personnel, causing injury.

[0124] Embodiment 10:

[0125] This embodiment provides a pressure reducer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0126] Furthermore, it also includes:

[0127] The air outlet hole 17 is provided at one side of the end of the pressure reducer housing 1 and is connected to the air supply hole 3;

[0128] The safety valve 18 is installed in the air outlet hole 17.

[0129] By adopting the above technical solution, the damage caused by overpressure of the pressure reducer is avoided through the setting of the safety valve.

[0130] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pressure reducer, comprising: Reducer housing (1); Air outlet one (2), opened on one side of the end of the reducer housing (1); Air supply hole (3), arranged inside the reducer housing (1); It is characterized in that it further includes: Radial hole (4), opened on the radial outer side of the reducer housing (1) and communicated with the air outlet one (2); Piston assembly (5), slidably arranged in the radial hole (4), and a flow channel communicating the radial hole (4) and the air supply hole (3) is arranged below the piston assembly (5); Elastic member (6), telescopically arranged between the piston assembly (5) and the radial hole (4), and the piston assembly (5) at least partially extends out of the upper orifice of the radial hole (4) through the elastic member (6), When the piston assembly (5) moves relative to the radial hole (4) under an external force, the elastic member (6) is compressed to drive the piston assembly (5) to reset; Ring (7), sleeved on the outer side of the reducer housing (1) and rotatable relative to the reducer housing (1); Wherein, a receiving groove (301) adapted to the piston assembly (5) is opened on the radial inner side of the ring (7), and when the ring (7) rotates, the piston assembly (5) can reciprocate along its axial direction to block or open the flow channel.

2. The pressure reducer according to claim 1, wherein The piston assembly (5) includes: Piston rod, including a rod body (51) and a plug head (52) connected to the lower end of the rod body (51) for blocking the flow channel; Sealing ring one (53), sleeved on the radial outer side of the rod body (51); Wherein, a ring groove one (54) for the sealing ring one (53) to be snapped into is opened on the radial outer side of the rod body (51); Wherein, the elastic member (6) is a compression spring, one end of the compression spring abuts against the rod body (51), and the other end abuts against the bottom of the radial hole (4).

3. A pressure reducer according to claim 2, characterized in that, A ring groove two (55) is arranged between the plug head (52) and the rod body (51), and a sealing ring two (56) is sleeved on the ring groove two (55).

4. A pressure reducer according to claim 2, characterized in that, The upper end of the rod body (51) is arc-shaped.

5. A pressure reducer according to claim 1 or 4, characterized in that, One side of the receiving groove (301) is provided with a guiding inclined surface for extruding the piston assembly (5).

6. A pressure reducer according to claim 1, characterized in that, It further includes: Arc-shaped guiding groove (8), opened on the side of the reducer housing (1) radially away from the radial hole (4); Mounting hole (9), a mounting hole (9) corresponding to the arc-shaped guiding groove (8) is opened on the radial outer side of the ring (7); Limit member (10), installed in the mounting hole (9) and at least partially extending into the arc-shaped guiding groove (8).

7. A pressure reducer according to claim 1, characterized in that A plurality of arc-shaped grooves are arranged on the radial outer side of the ring (7) at circumferential intervals.

8. A pressure reducer according to claim 1, characterized in that, A switch mark (71) is arranged on the radial outer side of the ring (7), and the switch mark (71) is adjacent to the receiving groove (301).

9. A pressure reducer according to claim 1, characterized in that It further includes: Air outlet two (11), an air outlet two (11) is also opened on one side of the end of the reducer housing (1), and a metering valve (111) is fixedly installed in both the air outlet one (2) and the air outlet two (11); Air outlet three (12), opened in the middle of the end of the reducer housing (1), the outer orifice of the air outlet three (12) is funnel-shaped, and the air outlet three (12) is communicated with the air supply hole (3); Piston group (13), installed inside the reducer housing (1); The self-compensating valve (14) is located inside the pressure reducer housing (1) and is elastically abutted against the inner orifice of the third air outlet (12) through the self-compensating spring (141) for sealing the third air outlet (12). The contact rod (15) has a contact ball (16) fixedly connected to one end, and the other end extends into the third air outlet (12) and is fixedly connected to the self-compensating valve (14). Among them, the air supply hole (3) is opened in the middle of the piston group (13).

10. A pressure reducer according to claim 1, characterized in that, It further includes: The fourth air outlet (17) is opened on one side of the end of the pressure reducer housing (1) and is communicated with the air supply hole (3). The safety valve (18) is installed in the fourth air outlet (17).

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