Gas pressure regulator

Abstract

The utility model relates to a gas pressure regulator technical field, specific, and it is a kind of gas pressure regulator, it includes: valve body, pressure regulating subassembly and button, button is sleeved in regulating port, and the bottom of button is pressed to the first elastic member of regulating port, make the clearance between button and regulating port, button and diaphragm subassembly limit connection, the up and down movement of button can drive the up and down movement of diaphragm subassembly.The switch indication function and the switching function of switch of button are respectively arranged between button and regulating port and between button and diaphragm subassembly, and the influence to diaphragm subassembly after pressing button is smaller, and when pulling button, the elasticity of elastic member and the pressure of diaphragm subassembly under pressure difference do not need to be balanced, so switch indication function and switching function of switch can be stably realized after multiple uses.

Description

Technical Field

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

[0002] Liquefied petroleum gas (LPG) cylinders are generally equipped with gas pressure regulators, which reduce and stabilize pressure to ensure user safety. The inlet of the gas pressure regulator is typically connected to the angle valve on the LPG cylinder, while the outlet connects to a metal-coated flexible hose to supply gas to the appliance. Gas pressure regulators are widely used as an essential component in the connection between LPG cylinders and gas appliances.

[0003] To check if a gas pressure regulator is properly open, a status indicator is needed. However, most existing gas pressure regulators have either a rigid or flexible connection between the status indicator and the regulator. When the connection is rigid, pressing the indicator to check the regulator's status increases the outlet pressure, leading to increased gas flow and causing the product to lose its pressure-stabilizing function, potentially causing personal injury and property damage. When the connection is flexible, the regulator's on / off and indicating functions are combined. Flexible connections are prone to deformation and gaps, making it difficult to balance the on / off indication and regulation functions after prolonged use, leading to inaccurate readings.

[0004] Therefore, there is an urgent need to invent a gas pressure regulator. Utility Model Content

[0005] The purpose of this utility model is to provide a gas pressure regulator that, while maintaining stable pressure during the on / off indication function, also exhibits good long-term stability, addressing the shortcomings of existing technologies.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] A gas pressure regulator is provided, comprising:

[0008] The valve body has a first valve chamber and a second valve chamber. The first valve chamber is connected to the air inlet channel and the air outlet channel, respectively, and the second valve chamber is connected to the adjustment port.

[0009] A pressure regulating assembly includes a diaphragm assembly disposed between the first valve chamber and the second valve chamber, and a movable assembly disposed in the air intake channel. The diaphragm assembly separates the first valve chamber and the second valve chamber, and the diaphragm assembly moves back and forth according to the pressure difference between the first valve chamber and the second valve chamber. The movable assembly is movably connected to the diaphragm assembly, and the back and forth movement of the diaphragm assembly can drive the movable assembly to move, so that the movable assembly can adjust the air intake of the valve body or close the valve body.

[0010] A lifting button is sleeved on the adjustment port, and the bottom of the lifting button presses against the first elastic element of the adjustment port to support the gap between the lifting button and the adjustment port. The lifting button is limited to the diaphragm assembly, and the up and down movement of the lifting button can drive the up and down movement of the diaphragm assembly.

[0011] Furthermore, the diaphragm assembly includes an adjusting rod and a diaphragm. The adjusting rod includes a head and a rod portion. The rod portion passes through a shaft hole in the middle of the lifting button, and the end of the rod portion away from the head is fixedly connected to the diaphragm. The size of the head is larger than the diameter of the shaft hole, and the head presses against the upper surface of the lifting button.

[0012] Furthermore, the diaphragm assembly also includes a second elastic element, the two ends of which abut against the walls of the diaphragm and the second valve cavity, respectively.

[0013] Furthermore, a first groove is provided along the circumference of the adjustment port, and the first elastic element is disposed within the first groove.

[0014] Furthermore, the lifting button is provided with a second groove at a position relative to the first groove, and both ends of the first elastic member abut against the bottom of the first groove and the bottom of the second groove, respectively.

[0015] Furthermore, a first protrusion is provided circumferentially along the adjustment port, and the lifting knob is provided with a third groove that matches the first protrusion.

[0016] Furthermore, the cross-sectional area of ​​the first protrusion gradually decreases from bottom to top.

[0017] Furthermore, the movable component includes a first valve seat movably disposed within the air intake channel, a second valve seat fixedly disposed within the air intake channel, and a lever disposed within the first valve cavity. The first valve seat is provided with a first limiting hole, and the bottom of the diaphragm assembly is provided with a second limiting hole. The two ends of the lever are respectively inserted through the first limiting hole and the second limiting hole, so that the movement of the diaphragm assembly can drive the first valve seat to move within the air intake channel.

[0018] Furthermore, the second valve seat is provided with an airflow channel, and the airflow channel passes through a speed regulating chamber, in which a speed regulating bead is provided, and the size of the speed regulating bead is larger than the size of the airflow channel.

[0019] Furthermore, the speed regulating cavity is set in a conical shape along the airflow direction in the airflow channel, and the speed regulating cavity is formed by two detachably connected second valve seats.

[0020] The beneficial effects of this utility model are as follows: This application provides elastic force between the lifting button and the regulating port through the first elastic element. When the lifting button and the regulating port are kept in the open state, a gap will be generated between the lifting button and the regulating port. When the lifting button and the regulating port are kept in the closed state, the movement of the diaphragm assembly will drive the lifting button to move downward, so that no gap is generated between the lifting button and the regulating port. Therefore, whether the gas pressure regulator is in the open state can be determined by whether there is a gap between the lifting button and the regulating port, thus realizing the switch indication function. Because the lifting button is connected to the diaphragm assembly for limiting, lifting the button causes the diaphragm assembly to move upwards, which in turn moves the moving component, thereby adjusting or closing the air intake of the valve body, and thus switching the open and closed states of the gas regulator. This application achieves this by setting the switch indication function and the switch state switching function of the lifting button between the lifting button and the regulating port and between the lifting button and the diaphragm assembly, respectively. Since the switch indication function and the switch state switching function are set in different positions, they will not interfere with each other. When the switch indication function is used, pressing the lifting button allows the diaphragm assembly to move up and down normally, which has little impact on the diaphragm assembly. Therefore, pressing the lifting button will not cause instability in the gas. When the lifting button is pulled up, there is no need to balance the elasticity of the elastic element and the pressure of the diaphragm assembly under the gas pressure difference. Therefore, after multiple uses, both the switch indication function and the switch state switching function can be stably realized. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 This is a cross-sectional view of the present invention in its open state;

[0023] Figure 2 This is a cross-sectional view of the present invention in its closed state;

[0024] Figure 3 for Figure 1 Enlarged view of the structure at point A.

[0025] Wherein: 1-valve body; 11-first valve chamber; 12-second valve chamber; 13-inlet channel; 14-outlet channel; 15-adjustment port; 151-first elastic element; 152-first protrusion; 153-first groove; 2-pressure regulating assembly; 21-diaphragm assembly; 211-adjusting rod; 2111-head; 2112-rod; 212-diaphragm; 213-second elastic element; 214-second limiting hole; 22-moving assembly; 221-first valve seat; 2211-first limiting hole; 222-second valve seat; 2221-airflow channel; 2222-speed regulating chamber; 2223-speed regulating bead; 223-lever; 3-lifting knob; 31-second groove; 32-third groove. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing specific embodiments only and is not intended to limit this application.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Although this application discloses preferred embodiments as described above, it is not intended to limit the claims. Any person skilled in the art can make several possible changes and modifications without departing from the concept of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0029] The applicant has discovered that existing gas pressure regulators integrate the switch indication and pressure regulation functions in the same location, connecting the lever and diaphragm assembly via the same elastic element. This elastic element serves as both a support force for the gap between the lever and the valve body and a buffer for the diaphragm assembly when the lever is pressed. It also affects the stretching distance when the lever is pulled to switch the state. Because the functions are mutually influential, it is impossible to provide sufficient redundancy for each function. Therefore, after long-term use, it is easy to cause functional failure and poor stability.

[0030] This application decouples the switch indication and switch voltage regulation functions by implementing them with different components, thereby reducing the mutual influence between the different functions and improving overall stability.

[0031] like Figure 1-3 As shown, this application provides a gas pressure regulator, including: a valve body 1 for gas to pass through and accommodate components for adjusting gas pressure, the valve body 1 having a first valve chamber 11 and a second valve chamber 12 formed therein, the first valve chamber 11 being connected to an inlet channel 13 and an outlet channel 14 respectively, and the second valve chamber 12 being connected to an adjustment port 15; a pressure regulating component 2 for adjusting the gas pressure to a preset value, the pressure regulating component 2 including a diaphragm assembly 21 disposed between the first valve chamber 11 and the second valve chamber 12 and a moving component 22 disposed in the inlet channel 13, the diaphragm assembly 21 separating the first valve chamber 11 and the second valve chamber 12, gas being introduced into the first valve chamber 11 and a preset gas being introduced into the second valve chamber 12, therefore the pressure on the first valve chamber 11 side of the diaphragm assembly 21 is the gas pressure, and the pressure on the second valve chamber 12 side is the preset gas pressure, and the diaphragm assembly 21 moves back and forth with the pressure difference between the first valve chamber 11 and the second valve chamber 12, the moving component 22 and the diaphragm assembly 21. The diaphragm assembly 21 moves back and forth, which drives the moving assembly 22 to move, allowing the moving assembly 22 to adjust the air intake of the valve body 1 or close the valve body 1. When more gas is introduced, the pressure in the first valve chamber 11 increases, pushing the diaphragm assembly 21 to move and driving the moving assembly 22 to move, thus reducing the air intake and the pressure in the first valve chamber 11. Similarly, when less gas is introduced, the air intake will increase, thus increasing the pressure in the first valve chamber 11, forming an automatic adjustment of the gas pressure and flow. The lifting button 3 is mainly used to indicate the open or closed state of the gas regulator and to open or close the gas regulator. The lifting button 3 is sleeved on the adjustment port 15, and the bottom of the lifting button 3 presses against the first elastic member 151 of the adjustment port 15 to support the gap between the lifting button 3 and the adjustment port 15. The lifting button 3 is limited to the diaphragm assembly 21, and the up and down movement of the lifting button 3 can drive the up and down movement of the diaphragm assembly 21.

[0032] This application provides support between the lifting button 3 and the regulating port 15 through the first elastic element 151, creating a gap between the lifting button 3 and the regulating port 15. Since the first elastic element 151 is not directly connected to the pressure regulating component 2, the diaphragm component 21 can move back and forth normally after the lifting button 3 is pressed, without causing instability in the gas. When the lifting button 3 is pulled to control the switch state switching, the movement of the pressure regulating component 2 is achieved directly through the limiting effect of the lifting button 3, without the participation of the first elastic element 151. Therefore, the gas pressure regulator of this application can maintain stable operation after multiple uses.

[0033] Preferably, the diaphragm assembly 21 includes an adjusting rod 211 and a membrane 212. The adjusting rod 211 includes a head 2111 and a rod portion 2112. The rod portion 2112 passes through the shaft hole in the middle of the lifting button 3, and the end of the rod portion 2112 away from the head 2111 is fixedly connected to the membrane 212. The size of the head 2111 is larger than the diameter of the shaft hole, and the head 2111 presses against the upper surface of the lifting button 3. This arrangement makes the lifting button 3 form a stop structure when the adjusting rod 211 moves downward. When the lifting button 3 moves up and down, it forms a unidirectional drag on the adjusting rod 211. This ensures that the adjusting rod 211 can be dragged when the lifting button 3 is lifted, and that the sliding connection between the rod portion 2112 and the shaft hole of the lifting button 3 does not restrict the up and down movement of the diaphragm structure when the lifting button 3 is pressed down. In addition, when the adjusting rod 211 is dragged by the lifting button 3, the response speed is fast due to the direct contact, and the distance that the lifting button 3 needs to move is small, which can reduce the thickness of the lifting button 3.

[0034] Preferably, the diaphragm assembly 21 further includes a second elastic element 213, the two ends of which abut against the walls of the diaphragm 212 and the second valve chamber 12, respectively. The second elastic element 213 can adjust the force required for the diaphragm 212 to move up and down. By using different second elastic elements 213, the standard pressure of the gas under the pressure regulation of the gas regulator can be adjusted.

[0035] Preferably, a first groove 153 is provided along the circumference of the adjustment port 15, and a first elastic member 151 is disposed in the first groove 153. By disposing the first elastic member 151 in the first groove 153, the first elastic member 151 can extend and retract in a suitable direction to maintain the stability of the elastic force.

[0036] Preferably, the lifting button 3 is provided with a second groove 31 at the position of the first groove 153, and the two ends of the first elastic member 151 abut against the bottom of the first groove 153 and the second groove 31 respectively. When fully compressed, the first elastic member 151 is completely housed in the first groove 153 and the second groove 31, ensuring that its expansion and contraction deformation always proceeds in the preset direction, thereby applying a stable and consistent elastic force. This arrangement can prevent the first elastic member 151 from interfering or dislodging during movement.

[0037] Preferably, a first protrusion 152 is provided along the circumference of the adjustment port 15, and a third groove 32 matching the first protrusion 152 is provided for the lifting button 3. This arrangement provides radial constraint and circumferential positioning for the movement of the lifting button 3, effectively preventing it from swaying or getting stuck during movement and ensuring the stability of the movement of the lifting button 3.

[0038] Preferably, the cross-sectional area of ​​the first protrusion 152 gradually decreases from bottom to top, and a guide slope is formed on at least one side wall of the first protrusion 152. When the guide slope contacts the third groove 32 of the lifting button 3, it generates a radial component force, which can automatically correct small alignment errors and avoid wear or jamming problems caused by stress concentration.

[0039] Preferably, the movable component 22 includes a first valve seat 221 movably disposed within the intake channel 13, a second valve seat 222 fixedly disposed within the intake channel 13, and a lever 223 disposed within the first valve chamber 11. The first valve seat 221 is provided with a first limiting hole 2211, and the bottom of the diaphragm assembly 21 is provided with a second limiting hole 214. The two ends of the lever 223 pass through the first limiting hole 2211 and the second limiting hole 214 respectively, so that the movement of the diaphragm assembly 21 can drive the first valve seat 221 to move within the intake channel 13. When the diaphragm assembly 21 moves under the air pressure difference, The lever 223 will be pushed, causing the lever 223 to push the first valve seat 221. The first valve seat 221 is provided with a sealing gasket at the position relative to the second valve seat 222. When the distance between the first valve seat 221 and the second valve seat 222 decreases, the space of the air intake channel 13 decreases, which can reduce the air intake volume. Conversely, when the first valve seat 221 and the second valve seat 222 are pressed together, a seal can be achieved. A sealing ring is provided on the side of the first valve seat 221 away from the second valve seat 222. When the first valve seat 221 is pressed against the sealing ring and the wall of the air intake channel 13, a seal can also be achieved.

[0040] Preferably, the second limiting hole 214 is provided with a certain lever movement space in the moving direction of the diaphragm assembly 21. When the lifting button 3 is pressed down, the diaphragm assembly 21 moves without pushing the lever 223, thereby reducing the impact of the lifting button 3 on the gas flow.

[0041] Preferably, the second valve seat 222 is provided with an airflow channel 2221, and the airflow channel 2221 passes through the speed regulating chamber 2222. The speed regulating chamber 2222 is provided with a speed regulating bead 2223. The size of the speed regulating bead 2223 is larger than the size of the airflow channel 2221. When the gas flow rate is too high, it will blow the speed regulating bead 2223 to press against the airflow channel 2221, thereby reducing the flow rate. When the flow rate decreases, it will slide down again under the action of gravity and open the airflow channel 2221.

[0042] Preferably, the speed regulating cavity 2222 is set in a conical shape along the airflow direction in the airflow channel 2221, and the speed regulating cavity 2222 is formed by two parts of the second valve seat 222 being detachably connected. Setting the speed regulating cavity 2222 in a conical shape can form an inclined surface, which helps the speed regulating bead 2223 to press against the airflow channel 2221 along the inclined surface. Since the speed regulating cavity 2222 is detachably connected, the size of the speed regulating cavity 2222, the angle of the inclined surface, or the size of the opening of the airflow channel 2221 can be adjusted as needed to achieve different speed regulation requirements.

[0043] like Figure 1-2 As shown, the principle of the gas pressure regulator switching from the closed state to the open state is as follows: When in the closed state, the first valve seat 221 moves to the connection port between the air intake channel 13 and the first valve chamber 11. The gas pressure in the air intake channel 13 pushes the sealing ring of the first valve seat 221 against the wall surface to achieve a seal. At the same time, since there is no gas in the first valve chamber 11, the pressure is relatively low. The diaphragm assembly 21 moves downward under the pressure difference, pushing the lever to make the sealing ring of the first valve seat 221 further press against the wall surface to achieve a seal. In addition, the downward movement of the diaphragm assembly 21 drives the lifting knob 3 to move downward. Make the lifting button 3 abut against the regulating port 15. At this time, pressing the lifting button 3 will not move it, indicating that the gas regulator is in the closed state. Slowly lift the lifting button 3 upward a distance, which will drive the regulating rod 211 to move upward, drive the diaphragm assembly 21 to move upward, and the upward movement of the diaphragm assembly 21 will push the lever 223 to rotate, thereby pushing the first valve seat 221 to move towards the second valve seat 222, so that the sealing ring does not abut against the wall, opening the air intake channel 13. At this time, the gas pressure is automatically controlled by the diaphragm assembly 21 and the first valve chamber 11, switching to the open state.

[0044] like Figure 1-2 As shown, the principle of the gas pressure regulator switching from the open state to the closed state is as follows: Lifting the knob 3 upward causes the first valve seat 221 to press against the second valve seat 222, closing the air intake passage 13. After the gas flows out of the first valve chamber 11, releasing the knob 3 causes the first valve seat 221 to move in the direction of the second valve seat 222 under the action of the diaphragm assembly 21 and the gas flow, and the sealing ring presses against the wall of the air intake passage 13 to achieve a seal, switching to the closed state.

[0045] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the present invention's conception through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be protected within the scope of the appended claims.

Claims

1. A gas pressure regulator, characterized in that, include: The valve body (1) has a first valve chamber (11) and a second valve chamber (12) formed inside it. The first valve chamber (11) is connected to the air inlet channel (13) and the air outlet channel (14) respectively, and the second valve chamber (12) is connected to the adjustment port (15). The pressure regulating component (2) includes a diaphragm assembly (21) disposed between the first valve chamber (11) and the second valve chamber (12) and a moving component (22) disposed in the air intake channel (13). The diaphragm assembly (21) separates the first valve chamber (11) and the second valve chamber (12), and the diaphragm assembly (21) moves back and forth with the pressure difference between the first valve chamber (11) and the second valve chamber (12). The moving component (22) is movably connected to the diaphragm assembly (21). The back and forth movement of the diaphragm assembly (21) can drive the moving component (22) to move, so that the moving component (22) can adjust the air intake of the valve body (1) or close the valve body (1). A lifting button (3) is sleeved on the adjustment port (15), and the bottom of the lifting button (3) presses against the first elastic element (151) of the adjustment port (15), so that a gap is generated between the lifting button (3) and the adjustment port (15). The lifting button (3) is limitedly connected to the diaphragm assembly (21), and the diaphragm assembly (21) can be driven to move up and down by the up and down movement of the lifting button (3).

2. The gas pressure regulator according to claim 1, characterized in that: The diaphragm assembly (21) includes an adjusting rod (211) and a diaphragm (212). The adjusting rod (211) includes a head (2111) and a rod portion (2112). The rod portion (2112) passes through the shaft hole in the middle of the lifting button (3), and the end of the rod portion (2112) away from the head (2111) is fixedly connected to the diaphragm (212). The size of the head (2111) is larger than the diameter of the shaft hole, and the head (2111) presses against the upper surface of the lifting button (3).

3. The gas pressure regulator according to claim 2, characterized in that: The diaphragm assembly (21) further includes a second elastic element (213), the two ends of which abut against the walls of the diaphragm (212) and the second valve chamber (12), respectively.

4. The gas pressure regulator according to claim 1, characterized in that: A first groove (153) is provided along the circumference of the adjustment port (15), and the first elastic element (151) is disposed in the first groove (153).

5. The gas pressure regulator according to claim 4, characterized in that: The lifting button (3) is provided with a second groove (31) at a position relative to the first groove (153), and the two ends of the first elastic member (151) abut against the bottom of the first groove (153) and the second groove (31) respectively.

6. The gas pressure regulator according to claim 1, characterized in that: A first protrusion (152) is provided along the circumference of the adjustment port (15), and the lifting button (3) is provided with a third groove (32) that matches the first protrusion (152).

7. The gas pressure regulator according to claim 6, characterized in that: The cross-sectional area of ​​the first protrusion (152) gradually decreases from bottom to top.

8. The gas pressure regulator according to claim 1, characterized in that: The movable component (22) includes a first valve seat (221) movably disposed in the air intake channel (13), a second valve seat (222) fixedly disposed in the air intake channel (13), and a lever (223) disposed in the first valve chamber (11). The first valve seat (221) is provided with a first limiting hole (2211), and the bottom of the diaphragm assembly (21) is provided with a second limiting hole (214). The two ends of the lever (223) are respectively inserted through the first limiting hole (2211) and the second limiting hole (214), so that the movement of the diaphragm assembly (21) can drive the first valve seat (221) to move in the air intake channel (13).

9. The gas pressure regulator according to claim 8, characterized in that: The second valve seat (222) is provided with an airflow channel (2221), and the airflow channel (2221) passes through the speed regulating cavity (2222). The speed regulating cavity (2222) is provided with a speed regulating bead (2223), and the size of the speed regulating bead (2223) is larger than the size of the airflow channel (2221).

10. The gas pressure regulator according to claim 9, characterized in that: The speed regulating cavity (2222) is set in a conical shape along the airflow direction in the airflow channel (2221), and the speed regulating cavity (2222) is formed by two parts of the second valve seat (222) being detachably connected.

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