Gas-liquid dual-purpose valve of liquefied petroleum gas steel cylinder

Abstract

The utility model discloses a liquefied petroleum gas steel cylinder gas-liquid dual-purpose valve which comprises a valve body, a conveying pipe connector is integrally arranged in the middle of one side of the valve body, a valve cover is fixedly installed at the top of the valve body in a sealed mode, a first threaded rod is connected to the middle of the valve cover in a penetrating and threaded mode, and a first rotary knob is fixedly installed at the top of the first threaded rod. A first sealing plug is fixedly installed at the bottom of the first threaded rod, a communicating groove is formed in the middle of the first sealing plug, a connecting column communicating with the communicating groove is integrally arranged at the bottom of the first sealing plug, and a second threaded rod is in threaded connection with the interior of the first threaded rod. The second rotary knob is rotated, so that the connecting guide pipe, the connecting column and the communicating groove are communicated, due to the pressure of gas, the residual liquid enters the conveying pipe through the conveying pipe connector and enters the stove for combustion, and the liquefied petroleum gas residual liquid in the steel cylinder can be effectively utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder. Background Art

[0002] Liquefied petroleum gas (LPG) is a colorless, volatile liquid obtained by pressurizing and cooling natural gas or petroleum in refineries. At room temperature, it is difficult to vaporize and utilize in cylinders and becomes residual liquid to be discarded, which not only wastes resources but also poses a hidden danger to the environment and safety.

[0003] Existing liquefied petroleum gas cylinder valves are generally gas valves. During use, some of the liquefied liquefied petroleum gas will remain at the bottom of the cylinder. The existing valves cannot discharge this part of the liquefied petroleum gas for further use, resulting in waste and creating safety hazards.

[0004] For this reason, we propose a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder. Utility Model Content

[0005] The purpose of the utility model is to provide a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder, comprising a valve body, a delivery pipe interface being integrally provided in the middle of one side of the valve body, a valve cover being sealingly and fixedly installed on the top of the valve body, a first threaded rod being threadedly connected through the middle of the valve cover, a first knob being fixedly installed on the top of the first threaded rod, a first sealing plug being fixedly installed on the bottom of the first threaded rod, a communicating groove being provided in the middle of the first sealing plug, a connecting column being connected to the communicating groove being integrally provided on the bottom of the first sealing plug, a second threaded rod being connected to the internal thread of the first threaded rod, a second knob being fixedly installed on the top of the second threaded rod, a second sealing plug being fixedly installed on the bottom of the second threaded rod, a connecting conduit being provided at the bottom of the connecting column, and a filter ball being fixedly installed at the bottom of the connecting conduit.

[0007] Optionally, a groove is provided on the top of the first knob, and the second knob is rotatably connected to the inside of the groove of the first knob, and the top of the second knob is flush with the top of the first knob.

[0008] Optionally, the through hole inside the connecting column passes through the lower half of the first sealing plug and is connected to the communicating groove. The first sealing plug and the second sealing plug have the same shape, and the diameter of the second sealing plug is smaller than that of the first sealing plug.

[0009] Optionally, the top of the connecting conduit is sealed and rotatably connected to the connecting column, a stabilizing frame is fixedly installed on the bottom of the valve body, and the connecting conduit is slidably connected to the middle of the stabilizing frame.

[0010] Optionally, the diameter of the second threaded rod is smaller than the diameter of the first threaded rod, and the length of the second threaded rod is longer than the first threaded rod.

[0011] Optionally, the communicating groove is opened in the middle of the first sealing plug, and the communicating groove is flush with the interface of the delivery pipe.

[0012] Optionally, the valve cover is sealed to the top of the valve body, and a sealing ring is provided at the threaded connection between the first threaded rod, the valve cover and the first threaded rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder is provided with a first threaded rod and a second threaded rod. During normal use, the first knob is rotated to cause the first threaded rod to drive the first sealing plug to rise, thereby opening the passage inside the valve body and connecting it to the delivery pipe interface, thereby delivering the liquefied petroleum gas to the stove for combustion. When discharging residual liquid, the first knob is rotated in the opposite direction to seal the first sealing plug, and the second knob is rotated to connect the connecting conduit, the connecting column and the connecting groove. Due to the pressure of the gas, the residual liquid is filtered by the filter ball and then enters the delivery pipe through the connecting conduit, the connecting column, the connecting groove and the delivery pipe interface, and then enters the stove for combustion, so that the residual liquefied petroleum gas in the cylinder can be effectively utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder of the utility model;

[0016] Figure 2 This is a structural schematic diagram of a valve body of a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to the present utility model;

[0017] Figure 3 The utility model is a structural schematic diagram of a second threaded rod of a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder.

[0018] In the figure: 1. Valve body; 2. Valve cover; 3. First threaded rod; 4. First sealing plug; 5. Delivery pipe interface; 6. First knob; 7. Second knob; 8. Second threaded rod; 9. Second sealing plug; 10. Connecting groove; 11. Connecting column; 12. Connecting conduit; 13. Filter ball; 14. Stabilizing frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figures 1 to 3 The utility model provides a gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder, comprising a valve body 1, a delivery pipe interface 5 being integrally provided in the middle of one side of the valve body 1, a valve cover 2 being sealingly fixedly installed on the top of the valve body 1, a first threaded rod 3 being threadedly connected through the middle of the valve cover 2, a first knob 6 being fixedly installed on the top of the first threaded rod 3, a first sealing plug 4 being fixedly installed on the bottom of the first threaded rod 3, a communicating groove 10 being provided in the middle of the first sealing plug 4, a connecting column 11 being connected to the communicating groove 10 being integrally provided on the bottom of the first sealing plug 4, a second threaded rod 8 being threadedly connected to the inner portion of the first threaded rod 3, a second knob 7 being fixedly installed on the top of the second threaded rod 8, a second sealing plug 9 being fixedly installed on the bottom of the second threaded rod 8, and a connecting conduit 12 being provided on the bottom of the connecting column 11. A filter ball 13 is fixedly installed at the bottom of the connecting conduit 12. By setting the first threaded rod 3 and the second threaded rod 8, during normal use, only the first knob 6 is rotated to make the first threaded rod 3 drive the first sealing plug 4 to rise, open the channel inside the valve body 1 and connect it with the delivery pipe interface 5, and deliver the liquefied petroleum gas to the stove for combustion. When discharging the residual liquid, the first knob 6 is rotated in the opposite direction to seal the first sealing plug 4, and the second knob 7 is rotated to connect the connecting conduit 12 and the connecting column 11 with the connecting groove 10. Due to the pressure of the gas, the residual liquid is filtered by the filter ball 13 and then enters the delivery pipe through the connecting conduit 12, the connecting column 11, the connecting groove 10 and the delivery pipe interface 5, and then enters the stove for combustion, so that the residual liquefied petroleum gas in the cylinder can be effectively utilized.

[0021] A groove is provided at the top of the first knob 6 , and the second knob 7 is rotatably connected to the inside of the groove of the first knob 6 , and the top of the second knob 7 is flush with the top of the first knob 6 .

[0022] The through hole inside the connecting column 11 passes through the lower half of the first sealing plug 4 and is connected to the connecting groove 10. The first sealing plug 4 and the second sealing plug 9 have the same shape. The diameter of the second sealing plug 9 is smaller than the diameter of the first sealing plug 4. The connecting groove 10 is opened in the middle of the first sealing plug 4 and is flush with the delivery pipe interface 5.

[0023] The top of the connecting conduit 12 is sealed and rotatably connected to the connecting column 11 , a stabilizing frame 14 is fixedly installed at the bottom of the valve body 1 , and the connecting conduit 12 and the stabilizing frame 14 are slidably connected in the middle.

[0024] The diameter of the second threaded rod 8 is smaller than the diameter of the first threaded rod 3, and the length of the second threaded rod 8 is longer than the first threaded rod 3. The valve cover 2 is sealed to the top of the valve body 1, and a sealing ring is provided at the threaded connection between the first threaded rod 3 and the valve cover 2 and the first threaded rod 3.

[0025] Working principle:

[0026] During normal use, just turn the first knob 6 so that the first threaded rod 3 drives the first sealing plug 4 to rise, open the channel inside the valve body 1 and connect it to the delivery pipe interface 5, and deliver the liquefied petroleum gas to the stove for combustion. When discharging the residual liquid, turn the first knob 6 in the opposite direction to seal the first sealing plug 4, and turn the second knob 9 to connect the connecting conduit 12 and the connecting column 11 with the communicating groove 10. Due to the pressure of the gas, the residual liquid is filtered by the filter ball 13 and then enters the delivery pipe through the connecting conduit 12, the connecting column 11, the communicating groove 10 and the delivery pipe interface 5 to enter the residual liquid fuel-specific stove for combustion, so that the residual liquefied petroleum gas in the cylinder can be effectively utilized.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder, comprising a valve body (1), characterized in that: A delivery pipe interface (5) is integrally provided in the middle of one side of the valve body (1), a valve cover (2) is fixedly installed on the top of the valve body (1), a first threaded rod (3) is threadedly connected to the middle of the valve cover (2), a first knob (6) is fixedly installed on the top of the first threaded rod (3), a first sealing plug (4) is fixedly installed on the bottom of the first threaded rod (3), a connecting groove (10) is provided in the middle of the first sealing plug (4), a connecting column (11) connected to the connecting groove (10) is integrally provided on the bottom of the first sealing plug (4), the first threaded rod (3) is internally threadedly connected to the second threaded rod (8), a second knob (7) is fixedly installed on the top of the second threaded rod (8), a second sealing plug (9) is fixedly installed on the bottom of the second threaded rod (8), a connecting conduit (12) is provided at the bottom of the connecting conduit (12), and a filter ball (13) is fixedly installed at the bottom of the connecting conduit (12).

2. A gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: A groove is provided on the top of the first knob (6), and the second knob (7) is rotatably connected to the inside of the groove of the first knob (6), and the top of the second knob (7) is flush with the top of the first knob (6).

3. The gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The through hole inside the connecting column (11) passes through the lower half of the first sealing plug (4) and is connected to the connecting groove (10). The first sealing plug (4) and the second sealing plug (9) have the same shape, and the diameter of the second sealing plug (9) is smaller than that of the first sealing plug (4).

4. The gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The top of the connecting conduit (12) is connected to the connecting column (11) in a sealed rotational manner, a stabilizing frame (14) is fixedly mounted on the bottom of the valve body (1), and the connecting conduit (12) and the stabilizing frame (14) are connected in a sliding manner through the middle.

5. The gas-liquid dual-purpose valve for liquefied petroleum gas cylinder according to claim 1, characterized in that: The diameter of the second threaded rod (8) is smaller than the diameter of the first threaded rod (3), and the length of the second threaded rod (8) is longer than that of the first threaded rod (3).

6. The gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The communication groove (10) is opened in the middle of the first sealing plug (4), and the communication groove (10) is flush with the delivery pipe interface (5).

7. The gas-liquid dual-purpose valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The valve cover (2) is sealedly connected to the top of the valve body (1), and a sealing ring is provided at the threaded connection between the first threaded rod (3), the valve cover (2) and the first threaded rod (3).

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