A refueling limited exhaust valve with a bypass hole

Abstract

The utility model relates to the technical field of exhaust valves, and discloses a refueling limited exhaust valve with a bypass hole, comprising a valve body, a connecting port is provided at the end of the valve body, the connecting port is connected with the inside of the valve body, a threaded groove is provided on the surface of the connecting port for easy connection with an external pipeline, an external sliding sleeve of the connecting port is provided with a collar, a first sealing groove extending from the upper surface is provided inside the collar, a first sealing strip is installed inside the first sealing groove, two exhaust holes connected with the inside are provided on the surface of the valve body, the sealing performance of the connection between the valve body and the external pipeline is improved as much as possible by the provision of the collar and the first sealing strip, thereby avoiding the situation that internal oil and gas leakage due to wear at the connection as much as possible, and there is no need for staff to use sealant or sealing tape to improve the sealing performance of the connection, thereby increasing the sustainability of the device, having high practicality and simple operation.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to a refueling limited exhaust valve with a bypass hole. Background Art

[0002] In order to ensure normal fuel supply, the fuel tank of a motor vehicle needs to be connected to the outside atmosphere through an oil drain valve. The fuel used in motor vehicles is generally volatile hydrocarbons, which can easily dissipate through the oil drain valve during use, causing fuel loss and environmental pollution.

[0003] After consulting the literature, it is known that the existing patent (publication number: CN219673420U) discloses a refueling limited exhaust valve with a bypass hole. However, in actual use, the above-mentioned prior art still has the following shortcomings:

[0004] When the above-mentioned prior art is connected to an external pipeline, it is necessary to use a connection port set at the end and connect it through a threaded groove on its surface. However, after long-term use, due to factors such as vibration, corrosion, over-tightening or unevenness, the connection may be worn, thereby reducing the sealing performance. A common measure to increase the sealing performance is to use sealants or sealing tapes. The above-mentioned prior art is usually disposable, which increases the number of operating steps and makes the operation process relatively cumbersome. It is less practical and cannot effectively ensure the sealing performance of the connection. In view of this, we propose a refueling limited exhaust valve with a bypass hole to solve the above-mentioned problem. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a refueling limited exhaust valve with a bypass hole, which solves the problem of insufficient sealing when some existing refueling limited exhaust valves with bypass holes are connected to external pipelines.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a refueling limited exhaust valve with a bypass hole, comprising a valve body, a connecting port is provided at the end of the valve body, the connecting port is connected to the interior of the valve body, a threaded groove is provided on the surface of the connecting port for easy connection with an external pipeline, a sleeve is provided on the external sliding sleeve of the connecting port, a first sealing groove extending from the upper surface is provided inside the sleeve, a first sealing strip is installed inside the first sealing groove, and two exhaust holes connected to the interior are provided on the surface of the valve body.

[0009] Preferably, a receiving groove is provided on a side of the collar facing the valve body, a spring is fixedly connected to the inner wall of the receiving groove, and the other end of the spring is fixedly connected to the surface of the valve body.

[0010] Preferably, a connecting block is fixedly connected to the surface of the valve body, a guide groove is provided on a side of the connecting block facing the connecting port, a bidirectional screw is rotatably connected inside the guide groove, connecting rods are threadedly sleeved on two opposite thread sections of the bidirectional screw, and the connecting rods are slidably connected to the inside of the guide groove and extend out of the guide groove.

[0011] Preferably, arc-shaped sealing rings are fixedly connected to the outer surfaces of the two connecting rods.

[0012] Preferably, a second sealing groove is formed on one side opposite to the two arc-shaped sealing rings, and a second sealing strip is disposed inside the two second sealing grooves.

[0013] Preferably, the bidirectional screw rotates through the connecting block, and one end of the bidirectional screw outside the connecting block is fixedly connected with an anti-slip knob, a groove is provided on the surface of the anti-slip knob, and a key groove is provided on a side of the anti-slip knob away from the bidirectional screw.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a refueling limited exhaust valve with a bypass hole, which has the following beneficial effects:

[0016] 1. The refueling limited exhaust valve with a bypass hole improves the sealing of the connection between the valve body and the external pipeline as much as possible through the arrangement of the collar and the first sealing strip, thereby avoiding internal oil and gas leakage due to wear at the connection as much as possible, and does not require the staff to use sealants or sealing tapes to improve the sealing of the connection, thereby increasing the sustainability of the device, being highly practical and easy to operate.

[0017] 2. The refueling limited exhaust valve with a bypass hole clamps the gap between the collar and the external pipe with two arc-shaped sealing rings. At this time, the second sealing strip can further improve the sealing of the gap, avoid oil and gas leakage as much as possible, and greatly increase the sealing and stability of the valve body and the external pipe after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a refueling limited exhaust valve with a bypass hole of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the valve body of the utility model;

[0020] Figure 3 It is a schematic cross-sectional structure diagram of the sleeve ring of the utility model;

[0021] Figure 4 This is a structural schematic diagram of the connection block of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the arc-shaped sealing ring of the utility model.

[0023] In the figure: 1. valve body; 2. connecting port; 3. threaded groove; 4. collar; 5. first sealing groove; 6. first sealing strip; 7. exhaust hole; 8. spring; 9. connecting block; 10. guide groove; 11. bidirectional screw; 12. connecting rod; 13. arc-shaped sealing ring; 14. second sealing groove; 15. second sealing strip; 16. anti-drop knob; 17. keyway; 18. receiving groove. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] See also Figure 1-Figure 5The utility model provides a technical solution: a refueling limited exhaust valve with a bypass hole, comprising a valve body 1, a connecting port 2 is provided at the end of the valve body 1, the connecting port 2 is connected to the inside of the valve body 1, a threaded groove 3 is provided on the surface of the connecting port 2 for easy connection with an external pipe, a sleeve 4 is provided on the external sliding sleeve of the connecting port 2, a first sealing groove 5 extending from the upper surface is provided inside the sleeve 4, a first sealing strip 6 is installed inside the first sealing groove 5, two exhaust holes 7 connected to the inside are provided on the surface of the valve body 1, when the staff needs to connect the valve body 1 to the external pipe, firstly, the threaded groove 3 provided on the surface of the connecting port 2 is screwed to the external pipe, and during the screwing process, the connecting end of the external pipe is screwed to the external pipe. It will gradually approach the valve body 1 until it contacts the sleeve 4, and subsequently the sleeve 4 will be pressed down until it contacts the valve body 1. At this time, since the sleeve 4 contacts the valve body 1, the valve body 1 will not move subsequently, so that the external connecting pipe will squeeze the first sealing strip 6 located inside the first sealing groove 5 together with the sleeve 4, and finally achieve a preliminary seal between the external connecting pipe and the connecting port 2. The above structure improves the sealing performance of the connection between the valve body 1 and the external pipeline as much as possible, thereby avoiding internal oil and gas leakage due to wear at the connection as much as possible, and there is no need for staff to use sealants or sealing tapes to improve the sealing performance of the connection, which increases the sustainability of the device, has high practicality, and is easy to operate.

[0029] Furthermore, a receiving groove 18 is provided on a side of the ring 4 facing the valve body 1, and a spring 8 is fixedly connected to the inner wall of the receiving groove 18. The other end of the spring 8 is fixedly connected to the surface of the valve body 1. When the external connecting pipe squeezes the ring 4, the spring 8 will deform, thereby giving the ring 4 a reverse thrust, thereby further improving the sealing performance of the first sealing strip 6 on the gap.

[0030] Furthermore, a connecting block 9 is fixedly connected to the surface of the valve body 1, and a guide groove 10 is provided on a side of the connecting block 9 facing the connecting port 2. A bidirectional screw 11 is rotatably connected inside the guide groove 10, and connecting rods 12 are threadedly sleeved on two opposite threads of the bidirectional screw 11. The connecting rods 12 are slidably connected to the inside of the guide groove 10 and extend out of the guide groove 10. The outer surfaces of the two connecting rods 12 are fixedly connected to arcuate sealing rings 13. The rotation of the bidirectional screw 11 drives the connecting rods 12 to slide inside the guide groove 10, thereby driving the movement of the arcuate sealing rings 13 through the movement of the connecting rods 12, and finally achieving secondary sealing of the gap between the external pipe and the ring 4 by the two arcuate sealing rings 13.

[0031] Furthermore, a second sealing groove 14 is provided on the opposite side of the two arc-shaped sealing rings 13, and a second sealing strip 15 is provided inside the two second sealing grooves 14. By clamping the two arc-shaped sealing rings 13 on the gap between the collar 4 and the external pipeline, the cooperation of the second sealing strip 15 can further improve the sealing of the gap, avoid oil and gas leakage as much as possible, and greatly increase the sealing and stability of the valve body 1 and the external pipeline after connection.

[0032] Furthermore, the bidirectional screw 11 rotates and passes through the connecting block 9. One end of the bidirectional screw 11 located outside the connecting block 9 is fixedly connected with an anti-slip knob 16. The surface of the anti-slip knob 16 is provided with a plurality of grooves. The setting of the anti-slip knob 16 can avoid the situation where the bidirectional screw 11 slips out of the hand when being manually rotated, thereby improving the user experience of the staff and ensuring the rotation efficiency of the bidirectional screw 11.

[0033] Furthermore, a key slot 17 is provided on the side of the anti-slip knob 16 away from the bidirectional screw 11. The key slot 17 facilitates the staff to operate the bidirectional screw 11 to rotate by using external tools, thereby improving the overall practicality and functionality of the device and simplifying operation.

[0034] Working principle:

[0035] When the refueling limited exhaust valve with a bypass hole is in use, the threaded groove 3 opened on the surface of the connecting port 2 is tightened with the external pipe. During the tightening process, the connecting end of the external pipe will gradually approach the valve body 1 until it contacts the collar 4. Subsequently, the collar 4 will be pressed down until it contacts the valve body 1. At this time, since the collar 4 contacts the valve body 1, the valve body 1 will not move subsequently. Therefore, the external connecting pipe will squeeze the first sealing strip 6 located inside the first sealing groove 5 together with the collar 4, and finally achieve a preliminary seal between the external connecting pipe and the connecting port 2.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refueling limited exhaust valve with a bypass hole, comprising a valve body (1), characterized in that: The end of the valve body (1) is provided with a connection port (2), the connection port (2) is connected to the inside of the valve body (1), the surface of the connection port (2) is provided with a threaded groove (3) for facilitating connection with an external pipe, the external sliding sleeve of the connection port (2) is provided with a collar (4), the inside of the collar (4) is provided with a first sealing groove (5) extending from the upper surface, the inside of the first sealing groove (5) is installed with a first sealing strip (6), and the surface of the valve body (1) is provided with two exhaust holes (7) connected to the inside.

2. A refueling limited exhaust valve with a bypass hole according to claim 1, characterized in that: The sleeve ring (4) is provided with a receiving groove (18) on the side facing the valve body (1), the inner wall of the receiving groove (18) is fixedly connected with a spring (8), and the other end of the spring (8) is fixedly connected to the surface of the valve body (1).

3. A refueling limited exhaust valve with a bypass hole according to claim 2, characterized in that: A connecting block (9) is fixedly connected to the surface of the valve body (1), a guide groove (10) is provided on a side of the connecting block (9) facing the connecting port (2), and a bidirectional screw (11) is rotatably connected inside the guide groove (10).

4. A refueling limited exhaust valve with a bypass hole according to claim 3, characterized in that: The two opposite threads of the bidirectional screw (11) are both threadedly sleeved with connecting rods (12), and the connecting rods (12) are slidably connected inside the guide groove (10) and extend out of the guide groove (10).

5. A refueling limited exhaust valve with a bypass hole according to claim 4, characterized in that: The outer surfaces of the two connecting rods (12) are both fixedly connected with arc-shaped sealing rings (13).

6. A refueling limited exhaust valve with a bypass hole according to claim 5, characterized in that: The two arc-shaped sealing rings (13) are each provided with a second sealing groove (14) on one side opposite to the other, and the inside of the two second sealing grooves (14) is provided with a second sealing strip (15).

7. The refueling limited exhaust valve with a bypass hole according to claim 4, characterized in that: The bidirectional screw (11) rotates to pass through the connection block (9), and one end of the bidirectional screw (11) located outside the connection block (9) is fixedly connected to an anti-slip knob (16), and a groove is provided on the surface of the anti-slip knob (16).

8. The refueling limited exhaust valve with a bypass hole according to claim 7, characterized in that: A key groove (17) is formed on a side of the anti-slip knob (16) away from the bidirectional screw rod (11).

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