Membrane separation type electronic PV valve for gas station

Abstract

The utility model provides a gas station membrane separation type electronic PV valve, which belongs to the technical field of PV valves and structurally comprises a lower valve group, the top surface of the lower valve group is communicated with an upper valve group in a threaded connection manner, a membrane separation component is vertically arranged in the middle of the cavity of the upper valve group, and a lower probe rod is vertically arranged in the middle of the bottom surface of the membrane separation component. And the lower end of the lower probe rod extends out of the lower end of the lower valve group, the bottom surface of the lower probe rod is connected with an electronic pressure sensor, and the top surface of the upper valve group is communicated and in threaded connection with a gas filtering assembly, so that the membrane separation type electronic PV valve for the gas station is formed. The opening and closing of the PV valve are realized by sensing the pressure in the oil depot in real time through the electronic pressure sensor, and the controller is used for general control, so that the pressure can be discharged at the first time when the pressure in the oil depot rises to a height limit value, the problem that the pressure is not discharged in time when the pressure is discharged through gravity type mechanical automatic control is effectively solved, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to a membrane separation type electronic PV valve for a gas station, belonging to the technical field of PV valves. Background Art

[0002] The PV valve, also known as the high-speed discharge pressure / vacuum valve, is a gravity-type ventilation device that automatically controls the pressure and is a trinity of a vacuum valve, a pressure valve, and a high-speed discharge device. PV valves are installed on the top of the oil depot at gas stations to discharge the pressure in the warehouse.

[0003] The existing PV valves in oil depots generally adopt gravity-type mechanical automatic pressure relief. When in use, the push pin in the PV valve often gets stuck and cannot be raised. The pressure in the oil depot needs to continue to increase to push the push pin up, which leads to the problem of untimely pressure relief and increased risk of gravity-type mechanical automatic pressure relief. In view of the above shortcomings, the utility model proposes a membrane separation electronic PV valve for gas stations. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a membrane-separated electronic PV valve for a gas station to solve the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions: a membrane separation type electronic PV valve for a gas station, whose structure includes a lower valve group, and the top surface of the lower valve group is connected to the upper valve group via a connecting thread, and a membrane separation component is vertically arranged in the middle of the cavity of the upper valve group, a lower probe rod is vertically arranged in the middle of the bottom surface of the membrane separation component, and the lower end of the lower probe rod extends to the outside of the lower end of the lower valve group, and the bottom surface of the lower probe rod is connected to an electronic pressure sensor, the top surface of the upper valve group is connected to the gas filter component via a connecting thread, and the top surface of the gas filter component is connected to the exhaust head via a connecting thread, a controller is provided on the right side of the upper valve group, and the membrane separation component, the electronic pressure sensor and the controller are electrically connected.

[0006] A further improvement is that the lower valve group includes a lower valve body, and the middle part of the lower end of the lower valve body is a hollow structure, and a bottom membrane sleeve groove is opened through the top surface of the lower valve body, a bottom membrane is fitted in the bottom membrane sleeve groove, and a top membrane sealing sleeve is opened through the middle of the bottom membrane, and the bottom membrane is made of rubber, an external thread is opened on the inner edge of the cavity at the lower end of the lower valve body, and a first external thread is opened on the circumference of the upper end of the lower valve body.

[0007] A further improvement is that the upper valve group includes an upper valve body, and a top membrane active cavity is opened in the middle of the bottom surface of the upper valve body, and a sliding column opening is opened through the middle of the top surface of the top membrane active cavity, and a plurality of exhaust holes are opened in a circular array around the top surface of the top membrane active cavity, a first internal thread is opened around the bottom surface of the upper valve body and is threadedly connected to the first external thread, a second external thread is opened around the top surface of the upper valve body, and a controller sleeve groove connected to the top membrane active cavity is opened on the right side of the valve body of the upper valve body.

[0008] A further improvement is that the membrane separation assembly includes a sliding column, and a push-pull beam is horizontally arranged at the lower end of the sliding column body, and a lifting plate is arranged on the bottom surface of the sliding column, and a top membrane that is movably sealed with the top membrane sealing sleeve is arranged on the bottom surface of the lifting plate, and the top membrane is made of rubber. A telescope is vertically arranged at the right end of the push-pull beam, and a stabilizing slide rod is vertically movably sleeved on the left end of the push-pull beam, and the sliding column is a hollow structure.

[0009] A further improvement is that the gas filter assembly includes a filter shell, and a filter cavity is opened in the middle of the filter shell, and a card edge is provided in the middle of the filter cavity body, and a plurality of filter cores are movably sleeved on the card edge, and the upper end cover of the filter cavity is provided with a pressure cap for pressing each filter core, and an exhaust screw port is opened through the middle of the pressure cap and is threadedly connected to the exhaust head, and a second internal thread is opened on the peripheral edge of the lower end of the filter cavity and is threadedly connected to the second external thread.

[0010] As a further improvement, the wiring electrically connecting the membrane separation assembly, the electronic pressure sensor and the controller is sealed, which is a prior art and will not be described in detail here.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a membrane-separated electronic PV valve for a gas station, which is designed by combining a lower valve group, an upper valve group, a membrane separation component, a lower probe, an electronic pressure sensor, a gas filter component, an exhaust head, and a controller. The PV valve adopts a movable sealing sleeve of a top and bottom membrane to open and close the PV valve, and the opening and closing of the PV valve is realized by the real-time sensing of the pressure in the oil reservoir by the electronic pressure sensor, and the controller is used as the master control, so that when the pressure in the oil reservoir rises to a high limit value, the pressure will be discharged immediately, and the discharged gas will be filtered out of harmful substances through the adsorption of the gas filter component, and the gas that meets the standard will be discharged. This effectively solves the problem of untimely pressure discharge in the existing gravity-type mechanical automatic pressure discharge, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a membrane separation type electronic PV valve for a gas station according to the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the lower valve group of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the upper valve group of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the membrane separation component of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the gas filter component of the present utility model. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1-5 The utility model is a schematic diagram of a membrane separation electronic PV valve technical solution for a gas station: its structure includes a lower valve group 1, and the top surface of the lower valve group 1 is connected to the upper valve group 2 by a threaded connection, and a membrane separation component 3 is vertically arranged in the middle of the cavity of the upper valve group 2, and a lower probe rod 4 is vertically arranged in the middle of the bottom surface of the membrane separation component 3, and the lower end of the lower probe rod 4 extends to the outside of the lower end of the lower valve group 1, and the bottom surface of the lower probe rod 4 is connected to an electronic pressure sensor 5, the top surface of the upper valve group 2 is connected to a gas filter component 6 by a threaded connection, and the top surface of the gas filter component 6 is connected to an exhaust head 7 by a threaded connection, and a controller 8 is sleeved on the right side of the upper valve group 2, and the membrane separation component 3 and the electronic pressure sensor 5 are electrically connected to the controller 8.

[0020] The lower valve group 1 includes a lower valve body 11, and the middle part of the lower end of the lower valve body 11 is a hollow structure, and a bottom membrane sleeve groove 12 is opened through the top surface of the lower valve body 11, and a bottom membrane 13 is fitted in the bottom membrane sleeve groove 12, and a top membrane sealing sleeve is opened through the middle part of the bottom membrane 13, and the bottom membrane 13 is made of rubber. An external thread 14 is opened along the inner edge of the cavity at the lower end of the lower valve body 11, and a first external thread 15 is opened along the circumference of the upper end of the lower valve body 11.

[0021] The upper valve group 2 includes an upper valve body 21, and a top membrane active cavity 22 is opened in the middle of the bottom surface of the upper valve body 21, and a sliding column opening 23 is opened through the middle of the top surface of the top membrane active cavity 22, and a plurality of exhaust holes 24 are opened in a circular array around the top surface of the top membrane active cavity 22. A first internal thread 25 threadedly connected to the first external thread 15 is opened around the bottom surface of the upper valve body 21, and a second external thread 26 is opened around the top surface of the upper valve body 21. A controller sleeve groove 27 connected to the top membrane active cavity 22 is opened on the right side of the valve body of the upper valve body 21.

[0022] The membrane separation assembly 3 includes a sliding column 31, and a push-pull beam 32 is horizontally arranged at the lower end of the sliding column 31, and a lifting plate 33 is arranged on the bottom surface of the sliding column 31. The bottom surface of the lifting plate 33 is provided with a top membrane 34 that is movably sealed with the top membrane sealing sleeve. The top membrane 34 is made of rubber. A telescoping device 35 is vertically arranged at the right end of the pushing-pull beam 32, and a stabilizing slide rod 36 is vertically movably sleeved on the left end of the pushing-pull beam 32. The sliding column 31 is a hollow structure.

[0023] The gas filter assembly 6 includes a filter housing 61, and a filter cavity is provided in the middle of the filter housing 61, and a clamping edge 62 is provided in the middle of the filter cavity body. A plurality of filter cores 63 are movably sleeved on the clamping edge 62, and the upper end cover of the filter cavity is provided with a pressure cap 64 for pressing each filter core 63, and an exhaust screw port 65 is provided through the middle of the pressure cap 64 and is threadedly connected to the exhaust head 7, and a second internal thread 66 is provided at the circumference of the lower end of the filter cavity and is threadedly connected to the second external thread 26.

[0024] Working principle:

[0025] First, install this product on the top surface of the oil depot and power it on. When in use, the electronic pressure sensor 5 will sense the pressure in the oil depot in real time. When the pressure in the oil depot reaches the discharge pressure value set in advance by the electronic pressure sensor 5, it will transmit a signal to the controller 8, and the controller 8 will promptly issue instructions to the membrane separation component 3 to perform membrane separation operations. It will rise through the telescopic device 35, and the push-pull beam 32 will make the slide column 31 slide upward steadily in the slide column opening 23, so that the top membrane 34 will rise and separate from the seal of the top membrane sealing sleeve to form an exhaust gap, so that the air pressure in the oil depot will be discharged through the exhaust gap, and pass through the top membrane active cavity 22 and each exhaust hole 24. When the gas passes through each filter element 63, it will absorb and filter out harmful substances in the gas, and then the filtered and qualified gas will be discharged from the exhaust head 7.

[0026] In addition, when the electronic pressure sensor 5 senses that the pressure in the oil reservoir drops to the set safety pressure value, it still transmits a signal to the controller 8, and the controller 8 promptly issues an instruction to the membrane separation component 3 to close the membrane, and the top membrane 34 moves down and seals with the top membrane sealing sleeve through the telescopic device 35, and is closed in time after the pressure is released.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A membrane separation electronic PV valve for a gas station, characterized by: Its structure includes a lower valve group (1), and the top surface of the lower valve group (1) is connected to the upper valve group (2) through a connecting thread, and a membrane separation component (3) is vertically arranged in the middle of the cavity of the upper valve group (2), a lower probe rod (4) is vertically arranged in the middle of the bottom surface of the membrane separation component (3), and the lower end of the lower probe rod (4) extends to the outside of the lower end of the lower valve group (1), and the bottom surface of the lower probe rod (4) is connected to an electronic pressure sensor (5), the top surface of the upper valve group (2) is connected to a gas filter component (6) through a connecting thread, and the top surface of the gas filter component (6) is connected to an exhaust head (7), and a controller (8) is sleeved on the right side of the upper valve group (2), and the membrane separation component (3), the electronic pressure sensor (5) and the controller (8) are electrically connected.

2. The membrane separation electronic PV valve for gas stations according to claim 1, characterized in that: The lower valve group (1) includes a lower valve body (11), and the middle part of the lower end of the lower valve body (11) is a hollow structure, and a bottom membrane sleeve groove (12) is provided through the top surface of the lower valve body (11), a bottom membrane (13) is fitted in the bottom membrane sleeve groove (12), and a top membrane sealing sleeve is provided through the middle part of the bottom membrane (13), and the bottom membrane (13) is made of rubber. An external thread (14) is provided on the inner edge of the cavity at the lower end of the lower valve body (11), and a first external thread (15) is provided on the circumference of the upper end of the lower valve body (11).

3. The membrane separation type electronic PV valve for gas stations according to claim 2, characterized in that: The upper valve group (2) includes an upper valve body (21), and a top membrane active cavity (22) is provided in the middle of the bottom surface of the upper valve body (21), and a sliding column opening (23) is provided in the middle of the top surface of the top membrane active cavity (22), and a plurality of exhaust holes (24) are provided in a circular array around the top surface of the top membrane active cavity (22), a first internal thread (25) threadedly connected to the first external thread (15) is provided around the bottom surface of the upper valve body (21), a second external thread (26) is provided around the top surface of the upper valve body (21), and a controller sleeve groove (27) connected to the top membrane active cavity (22) is provided on the right side of the valve body of the upper valve body (21).

4. The membrane separation type electronic PV valve for gas stations according to claim 3, characterized in that: The membrane separation assembly (3) includes a slide column (31), and a push-pull beam (32) is horizontally arranged at the lower end of the slide column (31), and a lifting plate (33) is arranged on the bottom surface of the slide column (31). The bottom surface of the lifting plate (33) is provided with a top membrane (34) that is movably sealed with the top membrane sealing sleeve. The top membrane (34) is made of rubber. A telescoping device (35) is vertically arranged at the right end of the push-pull beam (32), and a stabilizing slide rod (36) is vertically and movably sleeved at the left end of the push-pull beam (32). The slide column (31) is a hollow structure.

5. The membrane separation type electronic PV valve for gas stations according to claim 4, characterized in that: The gas filter assembly (6) includes a filter housing (61), and a filter cavity is provided in the middle of the filter housing (61), and a clamping edge (62) is provided in the middle of the filter cavity body, a plurality of filter cores (63) are movably sleeved on the clamping edge (62), and the upper end cover of the filter cavity is provided with a pressure cap (64) for pressing each filter core (63), and an exhaust screw port (65) threadedly connected to the exhaust head (7) is provided through the middle of the pressure cap (64), and a second internal thread (66) threadedly connected to the second external thread (26) is provided on the circumference of the lower end of the filter cavity.

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