Low-point discharge device with exhaust valve

Abstract

The utility model relates to the field of low-point discharge devices of airport apron refueling pipe networks, in particular to a low-point discharge device with an exhaust valve, which comprises a connector seat body, a threaded cover is arranged at the top of the connector seat body, and a combined flange mutually sleeved with an airport apron pipeline is arranged at the bottom of the connector seat body. The combined flange is fixedly connected with the connector base body, an exhaust ball valve is installed on the surface of the combined flange, a maintenance ball valve, an operation ball valve and a self-closing assembly are sequentially installed above the connector base body from bottom to top, and a sealing mechanism is further arranged at the top of the self-closing assembly. According to the low-point discharging device with the exhaust valve, the use convenience degree of the low-point connector base is improved, air between a pipeline and a protective sleeve can be conveniently discharged through the exhaust ball valve, and the service life of the low-point connector base is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of a low-point joint seat, in particular to a low-point discharge device with an exhaust valve. Background Art

[0002] The low-point joint seat is an essential part for connecting the valve group and various actuators in the hydraulic system. It is widely used in the interface of aircraft refueling pipelines. The low-point joint seat is usually installed above the apron pipeline buried underground.

[0003] The low-point discharge device used for apron pipelines has pipes buried underground for a long time. There is air between the pipes and the protective casing, which can easily damage the anti-corrosion layer of the pipes and is difficult to inspect, thus reducing the life of the pipes of the low-point discharge device. Utility Model Content

[0004] The utility model aims to provide a low-point discharge device with an exhaust valve to solve the problem of easily damaged pipeline anti-corrosion layer proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-point discharge device with an exhaust valve, comprising a joint seat body, a threaded cover is provided at the top position of the joint seat body, a combination flange which is mutually socketed with the apron pipe is provided at the bottom position of the joint seat body, the combination flange is fixedly connected to the joint seat body, an exhaust ball valve is installed on the surface of the combination flange, a maintenance ball valve, an operating ball valve and a self-closing component are installed in sequence from bottom to top on the top of the joint seat body, and a sealing mechanism is also provided at the top position of the self-closing component.

[0006] Preferably, the exhaust ball valve is composed of a double-headed external thread straight-through connector, an internal and external thread right-angle elbow, and a ball valve.

[0007] Preferably, the interior of the self-closing component is provided with a valve stem, a threaded hole, a fastening screw, a return spring and a baffle, one end of the valve stem passes through the baffle and is fixed with a valve ball for opening and closing, the surface of the valve stem is sleeved with a return spring, and the two ends of the return spring are respectively fixedly connected to the surface of the valve stem and the baffle.

[0008] Preferably, a threaded hole is provided on one side of the valve stem, and a fastening screw is threadedly connected to one side of the joint seat body. One end of the fastening screw passes through the joint seat body and is threadedly fastened to the threaded hole. When the fastening screw is fastened to the threaded hole, the joint seat body is in a closed state and the reset spring is in a contracted state.

[0009] Preferably, a sealing gasket is provided inside the connector seat body, the surface of the sealing gasket is tightly fitted with the surface of the threaded cover, and a sealing component is provided inside the threaded cover.

[0010] Preferably, the interior of the sealing component includes an airbag ring, a connecting pad and a stretch spring, the connecting pad is adhered to the inner wall at the top position of the joint seat body, the airbag ring is adhered to the edge position of the sealing pad, and the surface of the airbag ring and the surface of the connecting pad are adhered and fixed to each other.

[0011] Preferably, a stretch spring is fixed on one side of the sealing gasket, and one end of the stretch spring is fixedly connected to the surface of the connecting gasket.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the low-point discharge device with an exhaust valve not only improves the convenience of using the low-point joint seat, but also can conveniently discharge the air between the pipeline and the protective sleeve through the exhaust ball valve, thereby increasing the service life of the low-point joint seat;

[0013] 1. By providing a self-closing component, the valve stem is fixed under the threaded cooperation of the fastening screw and the threaded hole. Since the joint seat body is in a closed state when the fastening screw and the threaded hole are fastened, if it needs to be opened, the fastening screw can be loosened to make the fastening screw located inside the valve seat. At this time, the valve stem is pushed under the action of the reset spring to move the valve stem outward to open the joint seat body. When closing, only the valve stem needs to be pushed and the fastening screw and the threaded hole need to be fastened to realize the self-closing function of the low-point joint seat, thereby improving the convenience of using the low-point joint seat;

[0014] 2. By providing a sealing mechanism, the joint seat body and the threaded cover are sealed under the action of the sealing gasket. At the same time, the sealing gasket can be thrust under the action of the extension spring, so that the sealing gasket is always in close contact with the threaded cover, avoiding the formation of a gap between the sealing gasket and the threaded cover after long-term aging. At the same time, under the action of the airbag ring, the connection pad and the sealing gasket can be sealed and connected to achieve a high-efficiency sealing function of the low-point joint seat, thereby improving the sealing effect of the low-point joint seat when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 It is an enlarged structural diagram of the self-closing component of the utility model;

[0018] Figure 4 It is an enlarged structural schematic diagram of the sealing mechanism of the utility model.

[0019] In the figure: 1. Connector seat body; 101. Threaded cover; 102. Combination flange; 103. Exhaust ball valve; 1031. Double-ended external thread straight-through connector; 1032. Internal and external thread right-angle elbow; 1033. Ball valve; 104. Maintenance ball valve; 105. Operating ball valve; 202. Self-closing component; 2021. Valve stem; 2022. Threaded hole; 2023. Fastening screw; 2024. Reset spring; 2025. Baffle; 3. Sealing mechanism; 301. Sealing pad; 302. Sealing component; 3021. Airbag ring; 3022. Connecting pad; 3023. Extension spring; 4. Apron pipeline; DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The utility model provides a low-point discharge device with an exhaust valve. Figure 1 and Figure 2 As shown, it includes a joint seat body 1, a dust cover 101 is provided at the top position of the joint seat body 1, a combined flange 102 which is mutually socketed with the apron pipe 4 is provided at the bottom position of the joint seat body 1, the combined flange 102 is fixedly connected to the joint seat body 1, an exhaust ball valve 103 is installed on the surface of the combined flange 102, a maintenance ball valve 104, an operating ball valve 105 and a self-closing component 202 are installed in sequence from bottom to top on the top of the joint seat body 1, a sealing mechanism 3 is also provided at the top position of the self-closing component 202, and the exhaust ball valve 103 is composed of a double-headed external threaded straight-through joint 1031, an internal and external thread right-angle elbow 1032, and a ball valve 1033.

[0022] like Figure 3As shown, the interior of the self-closing component 202 is provided with a valve stem 2021, a threaded hole 2022, a fastening screw 2023, a return spring 2024 and a baffle 2025. One end of the valve stem 2021 passes through the baffle 2025 and is fixed with a valve ball for opening and closing. The surface of the valve stem 2021 is sleeved with a return spring 2024, and the two ends of the return spring 2024 are respectively fixedly connected to the surfaces of the valve stem 2021 and the baffle 2025. A threaded hole 2022 is provided on one side of the valve stem 2021, and a fastening screw 2023 is threadedly connected to one side of the joint seat body 1. One end of the fastening screw 2023 passes through the joint seat body 1 and is threadedly fastened with the threaded hole 2022. When the fastening screw 2023 is fastened to the threaded hole 2022, the joint seat body 1 is in a closed state and the return spring 2024 is in a contracted state.

[0023] When in use, the valve stem 2021 is fixed under the thread cooperation of the fastening screw 2023 and the threaded hole 2022. Since the joint seat body 1 is in a closed state when the fastening screw 2023 and the threaded hole 2022 are fastened, if it needs to be opened, the fastening screw 2023 can be loosened so that the fastening screw 2023 is located inside the joint seat body 1. At this time, the valve stem 2021 is pushed under the action of the reset spring 2024 to move the valve stem 2021 outward to open the joint seat body 1. When closing, only the valve stem 2021 needs to be pushed, and then the fastening screw 2023 and the threaded hole 2022 need to be fastened to realize the self-closing function of the low-point joint seat.

[0024] Furthermore, if Figure 4 As shown, a sealing mechanism 3 is provided at the top position of the joint seat body 1, and the interior of the sealing mechanism 3 includes a sealing gasket 301 and a sealing component 302. The interior of the joint seat body 1 is provided with a sealing gasket 301, and the surface of the sealing gasket 301 is tightly fitted with the surface of the threaded cover 101. The interior of the threaded cover 101 is provided with a sealing component 302, and the interior of the sealing component 302 includes an airbag ring 3021, a connecting pad 3022 and a stretch spring 3023. The connecting pad 3022 is adhered to the inner wall at the top position of the joint seat body 1, and the airbag ring 3021 is adhered to the edge position of the sealing gasket 301, and the surface of the airbag ring 3021 and the surface of the connecting pad 3022 are adhered and fixed to each other. A stretch spring 3023 is fixed on one side of the sealing gasket 301, and one end of the stretch spring 3023 is fixedly connected to the surface of the connecting pad 3022.

[0025] When in use, the joint seat body 1 and the threaded cover 101 are sealed under the action of the sealing gasket 301. At the same time, the sealing gasket 301 can be thrust under the action of the extension spring 3023, so that the sealing gasket 301 is always in close contact with the threaded cover 101, thereby avoiding the formation of a gap between the sealing gasket 301 and the threaded cover 101 after long-term aging. At the same time, the connecting pad 3022 and the sealing gasket 301 can be sealed and connected under the action of the airbag ring 3021, so as to realize the efficient sealing function of the low-point joint seat.

[0026] Working principle: When in use, first, the exhaust can be automatically exhausted under the action of the exhaust ball valve 103 to prevent oxygen from being present between the apron pipe 4 and the protective sleeve, ensuring that the water content of the internal gasoline is lower than 30ppm. At this time, the valve stem 2021 is fixed under the thread cooperation of the fastening screw 2023 and the threaded hole 2022. Since the joint seat body 1 is in a closed state when the fastening screw 2023 and the threaded hole 2022 are fastened, if it needs to be opened, the fastening screw 2023 can be loosened so that the fastening screw 2023 is located inside the joint seat body 1. At this time, the valve stem 2021 is pushed under the action of the reset spring 2024 to move the valve stem 2021 outward to open the joint seat body 1. When closing, only the valve stem 2021 needs to be pushed, and then the fastening screw 2023 and the threaded hole 2022 need to be fastened to realize the self-closing function of the low-point joint seat, thereby improving the convenience of using the low-point joint seat.

[0027] At this time, under the action of the sealing gasket 301, the joint seat body 1 and the threaded cover 101 are sealed. At the same time, under the action of the extension spring 3023, a thrust can be generated on the sealing gasket 301, so that the sealing gasket 301 is always close to the threaded cover 101, to avoid the formation of a gap between the sealing gasket 301 and the threaded cover 101 after long-term aging. At the same time, under the action of the airbag ring 3021, the connecting pad 3022 and the sealing gasket 301 can be sealed and connected to achieve the efficient sealing function of the low-point joint seat, thereby improving the sealing effect of the low-point joint seat when in use, and finally completing the use of the low-point joint seat.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A low-point discharge device with an exhaust valve, comprising a connector body (1), characterized in that: A threaded cover (101) is provided at the top of the joint seat body (1), a combined flange (102) which is mutually sleeved with the apron pipe (4) is provided at the bottom of the joint seat body (1), the combined flange (102) is fixedly connected to the joint seat body (1), an exhaust ball valve (103) is installed on the surface of the combined flange (102), a maintenance ball valve (104), an operating ball valve (105) and a self-closing component (202) are installed in sequence from bottom to top on the top of the joint seat body (1), and a sealing mechanism (3) is also provided at the top of the self-closing component (202).

2. A low-point discharge device with an exhaust valve according to claim 1, characterized in that: The exhaust ball valve (103) is composed of a double-headed external thread straight-through joint (1031), an internal and external thread right-angle elbow (1032), and a ball valve (1033).

3. A low-point discharge device with an exhaust valve according to claim 1, characterized in that: The self-closing component (202) is provided with a valve stem (2021), a threaded hole (2022), a fastening screw (2023), a return spring (2024) and a baffle (2025) inside. One end of the valve stem (2021) passes through the baffle (2025) and is fixed with a valve ball for opening and closing. The surface of the valve stem (2021) is sleeved with a return spring (2024). The two ends of the return spring (2024) are respectively fixedly connected to the surface of the valve stem (2021) and the baffle (2025).

4. A low-point discharge device with an exhaust valve according to claim 3, characterized in that: A threaded hole (2022) is provided on one side of the valve stem (2021), and a fastening screw (2023) is threadedly connected to one side of the joint seat body (1). One end of the fastening screw (2023) passes through the joint seat body (1) and is threadedly fastened to the threaded hole (2022). When the fastening screw (2023) is fastened to the threaded hole (2022), the joint seat body (1) is in a closed state, and the return spring (2024) is in a contracted state.

5. A low-point discharge device with an exhaust valve according to claim 1, characterized in that: A sealing gasket (301) is arranged inside the joint seat body (1); the surface of the sealing gasket (301) is tightly fitted with the surface of the threaded cover (101); and a sealing component (302) is arranged inside the threaded cover (101).

6. A low-point discharge device with an exhaust valve according to claim 5, characterized in that: The interior of the sealing component (302) includes an airbag ring (3021), a connecting pad (3022) and a stretching spring (3023); the connecting pad (3022) is adhered to the inner wall at the top position of the joint seat body (1); the airbag ring (3021) is adhered to the edge position of the sealing pad (301); and the surface of the airbag ring (3021) and the surface of the connecting pad (3022) are adhered and fixed to each other.

7. A low-point discharge device with an exhaust valve according to claim 6, characterized in that: A stretch spring (3023) is fixed on one side of the sealing pad (301), and one end of the stretch spring (3023) is fixedly connected to the surface of the connecting pad (3022).

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