Bottled liquefied petroleum gas pressure regulator

Abstract

The utility model relates to a bottled liquefied petroleum gas pressure regulator, which is characterized in that a main gas path (13) and a branch gas path (14) are intersected at a valve cavity (15), and the valve cavity (15) is communicated with a gas outlet pipe (12); a rubber film (16) is arranged on one side, communicated with the branch gas path (14), of the valve cavity (15); a valve core (17) is arranged in the valve cavity (15) in a sliding manner; fuel gas flows into a main gas path (13) and a branch gas path (14) in the valve body (10) through the gas inlet pipe (11) and flows out of the gas outlet pipe (12) through the valve element (17). When the pressure in the gas inlet pipe (11) changes, the rubber film (16) deforms to enable the valve element (17) to slide along the valve cavity (15) so as to adjust the amount of gas flowing from the gas inlet pipe (11) and the main gas path (13) to the valve cavity (15), and therefore the pressure of fuel gas in the gas outlet pipe (12) can be kept stable, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure regulators, in particular to a bottled liquefied petroleum gas pressure regulator. Background Art

[0002] With the increasing emphasis on environmental protection and the efficient and safe use of energy, clean energy sources such as natural gas and liquefied petroleum gas are gradually replacing traditional energy sources. Natural gas is mainly supplied by gas pipelines, while liquefied petroleum gas is mainly supplied by liquefied gas cylinders. Natural gas or liquefied petroleum gas should be used within the appropriate pressure range. When the outlet pressure is too low, flashback will occur, which will undermine combustion stability, damage gas stoves, and easily cause safety accidents such as fires and explosions. When the outlet pressure is too high, it cannot be fully burned, resulting in low thermal efficiency, resulting in gas waste, increased CO emissions, and flameout and flameout. Therefore, the gas needs to be pressure-regulated during use. Existing gas valves do not have a pressure-regulating function, making them inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing gas valve has no pressure regulating function and is inconvenient to use.

[0004] In order to solve the above problems, the utility model provides a bottled liquefied petroleum gas pressure regulator, in which an air inlet pipe and an air outlet pipe are integrally formed on both sides of the valve body, and a main air path and a branch air path connected to the air inlet pipe are provided in the valve body. The main air path and the branch air path intersect in a valve cavity, and the valve cavity is connected to the air outlet pipe; a rubber film is provided on the side of the valve cavity connected to the branch air path, and a valve core is provided slidingly in the valve cavity. When the pressure in the air inlet pipe changes, the rubber film is deformed to cause the valve core to slide along the valve cavity to adjust the amount of air intake from the main air path to the valve cavity.

[0005] The bottled liquefied petroleum gas pressure regulator provided by the utility model also has the following technical features:

[0006] The valve cavity includes a cylindrical cavity and a conical cavity. The upper end of the cylindrical cavity is connected to the branch airway, and the conical cavity is inverted and its upper end is connected to the lower end of the cylindrical cavity.

[0007] The valve core includes a cylindrical core and a conical core. The upper end of the cylindrical core is connected to the rubber film. The conical core is inverted and its upper end is fixed to the lower end of the cylindrical core. The cylindrical core and the cylindrical cavity are slidingly sealed, so that the conical core and the conical cavity move relative to each other to adjust the air intake from the main air path to the valve cavity.

[0008] One side of the cylindrical cavity is communicated with the main gas path, and the other side is communicated with the gas outlet pipe.

[0009] A connecting column is provided at the upper end of the cylindrical core, and the connecting column is connected to the rubber film.

[0010] A pressing ring is fixed in the middle of the connecting column. The connecting column penetrates through the rubber film. The upper end of the connecting column is provided with an external thread and a corresponding upper pressing nut is provided to connect the connecting column with the rubber film.

[0011] An adjusting block is integrally formed on the lower side of the valve body. The adjusting block is successively provided with a guiding hole, an adjusting hole, and a threaded hole from top to bottom. The guiding hole communicates with the conical cavity. A top column is provided at the lower end of the conical core. The top column is in sliding seal with the guiding hole, and the lower end of the top column extends into the adjusting hole; an adjusting bolt is correspondingly provided in the threaded hole, and a spring is provided between the upper end of the adjusting bolt and the lower end of the top column.

[0012] An installation ring is provided near the lower end of the top column, and a corresponding installation groove is provided at the upper end of the adjusting bolt. The upper end of the spring is clamped on one side of the installation ring, and the lower end is clamped in the installation groove.

[0013] The diameters of the main air passage and the branch air passage are equal.

[0014] The branch air passage includes an inclined section and an arc section. The lower end of the inclined section communicates with the intake pipe, the upper end of the inclined section communicates with one end of the arc section, and the other end of the arc section communicates with the valve cavity.

[0015] The valve body includes a valve cover and a valve seat. The branch air passages are jointly arranged in the valve cover and the valve seat. The main air passage and the valve cavity are arranged in the valve seat. The valve seat is integrally formed with the intake pipe and the outlet pipe.

[0016] The utility model has the following beneficial effects: The gas flows from the intake pipe into the main air passage and the branch air passages in the valve body, and flows out from the outlet pipe through the valve core; when the pressure in the intake pipe changes, the rubber film deforms, causing the valve core to slide along the valve cavity to adjust the intake air volume flowing from the intake pipe and the main air passage to the valve cavity, thereby maintaining the stable gas pressure in the outlet pipe and being convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a partial cross-sectional view of the utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view of

[0019] Figure 3 is Figure 1 an exploded view of the parts of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0021] As Figures 1 to 3As shown in the figure, the bottled liquefied petroleum gas regulator of the present utility model has an inlet pipe 11 and an outlet pipe 12 integrally formed on both sides of the valve body 10. A main gas path 13 and a branch gas path 14 communicating with the inlet pipe 11 are provided inside the valve body 10. The main gas path 13 and the branch gas path 14 converge at the valve cavity 15, and the valve cavity 15 communicates with the outlet pipe 12. A rubber diaphragm 16 is provided on one side of the valve cavity 15 communicating with the branch gas path 14. A valve core 17 is slidably provided in the valve cavity 15. When the pressure in the inlet pipe 11 changes, the rubber diaphragm 16 deforms, causing the valve core 17 to slide along the valve cavity 15 to adjust the intake air volume from the main gas path 13 to the valve cavity 15.

[0022] The gas flows from the inlet pipe 11 into the main gas path 13 and the branch gas path 14 inside the valve body 10, and flows out from the outlet pipe 12 through the valve core 17. When the pressure in the inlet pipe 11 changes, the rubber diaphragm 16 deforms, causing the valve core 17 to slide along the valve cavity 15 to adjust the intake air volume flowing from the inlet pipe 11 and the main gas path 13 to the valve cavity 15, thereby maintaining the stable gas pressure in the outlet pipe 12 and being convenient to use.

[0023] Preferably, the valve cavity 15 includes a cylindrical cavity 151 and a conical cavity 152. The upper end of the cylindrical cavity 151 communicates with the branch gas path 14, and the conical cavity 152 is inverted and its upper end communicates with the lower end of the cylindrical cavity 151.

[0024] The valve core 17 includes a cylindrical core 171 and a conical core 172. The upper end of the cylindrical core 171 is connected to the rubber diaphragm 16, and the conical core 172 is inverted and its upper end is fixed to the lower end of the cylindrical core 171. The cylindrical core 171 is slidably sealed with the cylindrical cavity 151, so that the conical core 172 moves relative to the conical cavity 152 to adjust the intake air volume from the main gas path 13 to the valve cavity 15.

[0025] Among them, a plurality of sealing rings 18 are provided on the outer wall of the cylindrical core 171, and the outer side of the sealing ring 18 is in sliding contact with the inner wall of the cylindrical cavity 151.

[0026] Preferably, one side of the cylindrical cavity 151 communicates with the main gas path 13, and the other side communicates with the outlet pipe 12.

[0027] Preferably, a connecting column 19 is provided at the upper end of the cylindrical core 171, and the connecting column 19 is connected to the rubber diaphragm 16.

[0028] Preferably, a pressing ring 20 is fixed in the middle of the connecting column 19. The connecting column 19 penetrates through the rubber diaphragm 16. External threads are provided at the upper end of the connecting column 19 and corresponding upper pressing nuts 21 are provided to connect the connecting column 19 with the rubber diaphragm 16.

[0029] Preferably, an adjustment block 22 is integrally formed on the lower side of the valve body 10. The adjustment block 22 is successively provided with a guiding hole 23, an adjustment hole 24, and a threaded hole 25 from top to bottom. The guiding hole 23 communicates with the conical cavity 152. A top column 26 is provided at the lower end of the conical core 172. The top column 26 is in sliding seal with the guiding hole 23, and the lower end of the top column 26 extends into the adjustment hole 24. An adjustment bolt 27 is correspondingly provided in the threaded hole 25, and a spring 28 is provided between the upper end of the adjustment bolt 27 and the lower end of the top column 26.

[0030] Rotate the adjustment bolt 27 to adjust the pre-tightening force of the spring 28, so as to adjust the set pressure value in the intake pipe 11 when the valve core 17 can slide along the valve cavity 15.

[0031] Wherein, a plurality of sealing rings 18 are provided on the outer wall of the top column 26, and the outer side of the sealing ring 18 is in sliding contact with the inner wall of the guiding hole 23; a sealing ring 18 is provided on the upper side of the adjustment hole 24, and the inner side of the sealing ring 18 is in sliding contact with the outer wall of the top column 26.

[0032] Wherein, a knob 29 is provided at the lower end of the adjustment bolt 27.

[0033] Preferably, an installation ring 30 is provided near the lower end of the top column 26, and a corresponding installation groove 31 is provided at the upper end of the adjustment bolt 27. The upper end of the spring 28 is clamped on one side of the installation ring 30, and the lower end is clamped in the installation groove 31.

[0034] Preferably, the main gas path 13 and the branch gas path 14 have the same diameter, so that the gas pressures in the main gas path 13 and the branch gas path 14 are kept consistent.

[0035] Preferably, the branch gas path 14 includes an inclined section 141 and an arc section 142. The lower end of the inclined section 141 communicates with the intake pipe 11, the upper end of the inclined section 141 communicates with one end of the arc section 142, and the other end of the arc section 142 communicates with the valve cavity 15.

[0036] Wherein, the corresponding connection parts of the intake pipe 11, the inclined section 141, and the arc section 142 are all smoothly connected to reduce the flow resistance of the gas from the intake pipe 11 to the branch gas path 14, so that the gas pressures in the branch gas path 14 and the main gas path 13 are kept consistent.

[0037] Preferably, the valve body 10 includes a valve cover 101 and a valve seat 102. The branch gas path 14 is jointly arranged in the valve cover 101 and the valve seat 102, the main gas path 13 and the valve cavity 15 are arranged in the valve seat 102, and the valve seat 102 is integrally formed with the intake pipe 11 and the outlet pipe 12 to facilitate the disassembly and assembly of the valve body 10 and related components.

[0038] Wherein, the valve cover 101 and the valve seat 102 are connected by a flange and are sealed by a gasket.

[0039] The working principle of the present utility model is as follows:

[0040] The gas flows into the main gas path 13 and the branch gas path 14 in the valve body 10 from the intake pipe 11, and flows out from the outlet pipe 12 through the valve core 17; when the pressure in the intake pipe 11 changes, the rubber film 16 deforms, causing the valve core 17 to slide along the valve cavity 15 to adjust the intake air volume flowing from the intake pipe 11 and the main gas path 13 to the valve cavity 15, thereby maintaining the stability of the gas pressure in the outlet pipe 12 and being convenient to use; specifically, when the pressure in the intake pipe 11 rises, the center of the rubber film 16 bulges downward, causing the valve core 17 to slide downward along the valve cavity 15 to reduce the intake air volume flowing from the intake pipe 11 and the main gas path 13 to the valve cavity 15, thereby reducing the gas pressure in the outlet pipe 12 and maintaining stability; when the pressure in the intake pipe 11 drops, the center of the rubber film 16 bulges upward, causing the valve core 17 to slide upward along the valve cavity 15 to increase the intake air volume flowing from the intake pipe 11 and the main gas path 13 to the valve cavity 15, thereby increasing the gas pressure in the outlet pipe 12 and maintaining stability.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A bottled liquefied petroleum gas regulator, characterized in that, On both sides of the valve body (10), an intake pipe (11) and an exhaust pipe (12) are integrally formed. Inside the valve body (10), a main air passage (13) and a branch air passage (14) that communicate with the intake pipe (11) are provided. The main air passage (13) and the branch air passage (14) meet at a valve cavity (15), and the valve cavity (15) communicates with the exhaust pipe (12). On one side of the valve cavity (15) that communicates with the branch air passage (14), a rubber membrane (16) is provided. A valve core (17) is slidably arranged in the valve cavity (15). When the pressure in the intake pipe (11) changes, the rubber membrane (16) deforms, causing the valve core (17) to slide along the valve cavity (15) to adjust the intake air volume from the main air passage (13) to the valve cavity (15).

2. The bottled liquefied petroleum gas pressure regulator according to claim 1, wherein The valve cavity (15) includes a cylindrical cavity (151) and a conical cavity (152). The upper end of the cylindrical cavity (151) communicates with the branch air passage (14), and the conical cavity (152) is inverted and its upper end communicates with the lower end of the cylindrical cavity (151). The valve core (17) includes a cylindrical core (171) and a conical core (172). The upper end of the cylindrical core (171) is connected to the rubber membrane (16), and the conical core (172) is inverted and its upper end is fixed to the lower end of the cylindrical core (171). The cylindrical core (171) is slidably sealed with the cylindrical cavity (151), so that the conical core (172) and the conical cavity (152) move relative to each other to adjust the intake air volume from the main air passage (13) to the valve cavity (15).

3. The bottled liquefied petroleum gas pressure regulator according to claim 2, characterized in that, One side of the cylindrical cavity (151) communicates with the main air passage (13), and the other side communicates with the exhaust pipe (12).

4. The bottled liquefied petroleum gas pressure regulator according to claim 2, wherein A connecting column (19) is provided at the upper end of the cylindrical core (171), and the connecting column (19) is connected to the rubber membrane (16).

5. The bottled liquefied petroleum gas pressure regulator according to claim 4, characterized in that, A pressing ring (20) is fixed in the middle of the connecting column (19). The connecting column (19) penetrates through the rubber membrane (16). The upper end of the connecting column (19) is provided with an external thread and a corresponding upper pressing nut (21) is provided to connect the connecting column (19) and the rubber membrane (16).

6. The bottled liquefied petroleum gas pressure regulator according to claim 2, wherein, An adjusting block (22) is integrally formed on the lower side of the valve body (10). The adjusting block (22) is successively provided with a guiding hole (23), an adjusting hole (24), and a threaded hole (25) from top to bottom. The guiding hole (23) communicates with the conical cavity (152). A top column (26) is provided at the lower end of the conical core (172). The top column (26) is slidably sealed with the guiding hole (23), and the lower end of the top column (26) extends into the adjusting hole (24). An adjusting bolt (27) is correspondingly provided in the threaded hole (25). A spring (28) is provided between the upper end of the adjusting bolt (27) and the lower end of the top column (26).

7. The bottled liquefied petroleum gas pressure regulator according to claim 6, wherein An installation ring (30) is provided near the lower end of the top column (26). A corresponding installation groove (31) is provided at the upper end of the adjusting bolt (27). The upper end of the spring (28) is clamped on one side of the installation ring (30), and the lower end is clamped in the installation groove (31).

8. The bottled liquefied petroleum gas pressure regulator according to claim 1, characterized in that, The main air passage (13) and the branch air passage (14) have the same diameter.

9. The bottled liquefied petroleum gas pressure regulator according to claim 1, characterized in that The bronchial airway (14) includes an inclined section (141) and an arc section (142). The lower end of the inclined section (141) communicates with the intake pipe (11), the upper end of the inclined section (141) communicates with one end of the arc section (142), and the other end of the arc section (142) communicates with the valve cavity (15).

10. The bottled liquefied petroleum gas pressure regulator according to claim 1, characterized in that, The valve body (10) includes a valve cover (101) and a valve seat (102). The bronchial airway (14) is jointly arranged within the valve cover (101) and the valve seat (102). The main airway (13) and the valve cavity (15) are arranged within the valve seat (102). The valve seat (102) is integrally formed with the intake pipe (11) and the outlet pipe (12).

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