Flip type oil pouring pipe

Abstract

The utility model belongs to the technical field of oil tank accessories, and relates to a flip type oil pouring pipe which comprises a first pipe body and a second pipe body which are sleeved and relatively slide in the axial direction, the first pipe body is used for being connected with an oil outlet of an oil supply device, the second pipe body is used for being connected with an oil inlet of an oil receiving device, and a support is arranged at the rear end of the first pipe body. A sealing seat is arranged at the rear end of the second pipe body, a turnover valve plate is arranged on the front side of the sealing seat, the valve plate is connected with the support through a valve plate spring, a main spring for stretching the pipe bodies and the valve plate spring is arranged between the first pipe body and the second pipe body, and the valve plate is tensioned after the valve plate spring is stretched. The valve plate covers the sealing seat and seals the inner cavity of the second pipe body; and when the first pipe body and the second pipe body slide relatively, the valve plate spring pushes the valve plate to turn over and open the inner cavity of the second pipe body. The flip type oil pouring pipe has the advantages of being simple in structure, convenient to install and smooth in oil pouring.

Description

Technical Field

[0001] This utility model belongs to the technical field of fuel tank accessories, and relates to a flip-top type fuel drain pipe. Background Technology

[0002] An oil transfer pipe is a device used to control the pouring of liquids. It is widely used in containers, pipelines, and other applications to transfer oil stored in a supply device (such as an oil drum) to a receiving device. Its core function is to guide the direction of the liquid and prevent leakage through its structural design.

[0003] US Patent 8403185B2 (publication date March 26, 2013) discloses an automatically venting and automatically stopping pouring spout. The spout has an inlet pipe detachably connected to a liquid storage container and an outlet pipe slidably connected to the inlet pipe, with liquid and air channels defined within the inlet and outlet pipes. A valve system is also provided for opening the liquid and air channels, respectively, into the liquid storage container when the outlet pipe is slidably moved relative to the inlet pipe. During pouring, liquid flows through the liquid channel, and air enters the liquid storage container through the air ducts.

[0004] The elastic components and other structural designs in the aforementioned pouring nozzle occupy a large amount of internal space, making the structure complex and inconvenient to install, and also affecting the smoothness of oil pouring. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a flip-top type oil pouring pipe, which has the advantages of simple structure, convenient installation, smooth oil pouring, and good stability.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A flip-top type oil drain pipe includes a first pipe body and a second pipe body that are fitted together and slide relative to each other along the axial direction. The first pipe body is used to connect to the oil outlet of an oil supply device, and the second pipe body is used to connect to the oil inlet of an oil receiving device. A bracket is provided at the rear end of the first pipe body, and a sealing seat is provided at the rear end of the second pipe body. A flip-up valve plate is provided on the front side of the sealing seat. The valve plate is connected to the bracket by a valve plate spring. A main spring is provided between the first pipe body and the second pipe body to stretch the pipe body and the valve plate spring. When the valve plate spring is stretched, it tightens the valve plate. The valve plate covers the sealing seat and seals the inner cavity of the second pipe body.

[0008] When the first tube and the second tube slide relative to each other, the valve plate spring pushes the valve plate to flip and open the inner cavity of the second tube.

[0009] In the aforementioned flip-top type oil drain pipe, the first pipe body and the second pipe body can be either the first pipe body fitted onto the second pipe body or the second pipe body fitted onto the first pipe body. Preferably, the front end of the first pipe body is fitted onto the rear end of the second pipe body.

[0010] In the aforementioned flip-top type oil drain pipe, the valve plate is hinged to the inner wall of the second pipe body, the front end of the sealing seat is provided with a sealing lip, the rear side of the valve plate contacts and connects with the sealing lip to form a sealing structure, and the diameters of the sealing surface and the valve plate are both smaller than the pipe diameter of the second pipe body; furthermore, the sealing seat uses conventional sealing materials, preferably fluororubber.

[0011] In the aforementioned flip-top type oil pipe, a hinge groove that mates with the hinge shaft is provided axially on the inner wall of the second pipe body, and an insert that closes the hinge groove is provided at the front end of the second pipe body.

[0012] In the above-mentioned flip-top type oil drain pipe, an air pipe is provided through the upper part of the inner cavity of the second pipe body, the hinge shaft of the valve plate is provided on both sides of the upper end of the valve plate, and the rear end of the air pipe is provided with an inclined surface to avoid the flipping trajectory of the valve plate; after the valve plate flips to the maximum angle, there is still a gap between the inclined surface and the valve plate.

[0013] In the aforementioned flip-top type oil drain pipe, the valve spring is a tension spring, and the middle portions of the bracket and the valve plate are respectively provided with tension spring seats to fix the free ends of the tension springs; preferably, the tension spring seats are respectively located at the axis of the first pipe body and the valve plate.

[0014] In the aforementioned flip-top type oil pipe, the bracket is installed at the rear end of the first pipe body and fixed by an axial limiting structure and a circumferential limiting structure; the axial limiting structure can be a limiting plate or a retaining ring, and the circumferential limiting structure can be a combination structure of a limiting groove and a limiting block.

[0015] In the aforementioned flip-top type oil drain pipe, the main spring is a compression spring, with its two ends respectively abutting against the spring seats of the first pipe body and the second pipe body. The first pipe body, the second pipe body, and the main spring are coaxially arranged. A limiting structure is provided between the first pipe body and the second pipe body to restrict the relative displacement stroke. The spring seat can have a stepped structure on its inner wall or a separately set boss structure.

[0016] In the aforementioned flip-top type oil drain pipe, the sealing seat is an annular structure and is fitted at the opening of the second pipe body. The spring seat of the second pipe body is an annular convex ring structure and is pressed onto the sealing seat. The main spring presses the spring seat and the sealing seat together.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] This invention provides a flip-top type oil transfer pipe. A flip-top valve plate covers the sealing seat to form a sealing structure. A main spring drives a stretched valve plate spring to tighten the valve plate, making the sealing structure more stable. When the first and second pipe bodies slide relative to each other, the valve plate spring can also push the valve plate to rotate, connecting the inner cavities of the first and second pipe bodies to form an oil transfer pipeline. Furthermore, this invention significantly simplifies the structure of the elastic component and concentrates it within the inner cavity of the larger-diameter first pipe body, giving the oil transfer pipe better flowability. Furthermore, this invention incorporates a gas pipe pressure differential balance; during use, the valve plate covers the gas pipe opening to prevent liquid from flowing into the gas pipe. This invention has the advantages of simple structure, convenient installation, smooth oil transfer, and good stability. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a cross-sectional view (axial direction) of this utility model;

[0021] Figure 3 This is a perspective view of the second tube body of this utility model (with the valve plate open);

[0022] Figure 4 This is a perspective view of the valve plate of this utility model;

[0023] Figure 5 This is a perspective view of the bracket of this utility model;

[0024] Reference numerals in the attached drawings: 1. First tube body; 2. Second tube body; 3. Support; 4. Sealing seat; 5. Valve plate; 6. Valve plate spring; 7. Main spring; 8. Hinge shaft; 9. Hinge groove; 10. Insert; 11. Air tube; 12. Inclined surface; 13. Tension spring seat; 14. Spring seat. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 :

[0026] A flip-top type oil drain pipe includes a first pipe body 1 and a second pipe body 2 that are fitted together and slide relative to each other along the axial direction. The first pipe body 1 is used to connect to the oil outlet of an oil supply device, and the second pipe body 2 is used to connect to the oil inlet of an oil receiving device. A bracket 3 is provided at the rear end of the first pipe body 1 (in this utility model, "front" and "rear" are defined according to the liquid output direction, from back to front along the liquid output direction; "upper" and "lower" are defined according to the actual use state of the drain pipe). A sealing seat 4 is provided at the rear end of the second pipe body 2. A flip-up valve plate 5 is provided on the front side of the sealing seat 4. The valve plate 5 is connected to the bracket 3 by a valve plate spring 6. A main spring 7 is provided between the first pipe body 1 and the second pipe body 2 to stretch the pipe body and the valve plate spring 6. After the valve plate spring 6 is stretched, it tightens the valve plate 5. The valve plate 5 covers the sealing seat 4 and seals the inner cavity of the second pipe body 2.

[0027] When the first tube 1 and the second tube 2 slide relative to each other, the valve plate spring 6 pushes the valve plate 5 to flip and open the inner cavity of the second tube 2.

[0028] In this embodiment, initially, the main spring 7 pushes the first tube 1 and the second tube 2 away from each other, keeping them at their maximum tube length. When the first tube 1 and the second tube 2 are stretched, the distance between the support 3 and the valve plate 5 also increases, causing the valve plate spring 6 to be stretched (the force generated by the main spring 7 is much greater than that of the valve plate spring 6). The stretched valve plate spring 6 acts on the valve plate 5, pressing the valve plate 5 against the sealing seat 4 to form a sealing structure. When the drain pipe needs to be used, the first tube 1 and the second tube 2 are slid relative to each other in the direction of tube shortening, and the distance between the support 3 and the valve plate 5 gradually decreases. The stretched valve plate spring 6 gradually retracts to its original state. When it continues to shrink, the valve plate spring 6 pushes the valve plate 5 to rotate around its hinge axis 7, causing the valve plate 5 to disengage from the sealing seat 4, and the inner cavity of the second tube 2 is opened. After use, the external force disappears, the compressed main spring 7 returns to its original state, and drives the drain pipe to reset to its initial state.

[0029] The valve plate 5 is hinged to the inner wall of the second pipe body 2. The front end of the sealing seat 4 is provided with a sealing lip. The rear side of the valve plate 5 contacts and connects with the sealing lip to form a sealing structure. The diameter of the sealing surface and the valve plate 5 are both smaller than the pipe diameter of the second pipe body 2. Furthermore, the sealing seat 4 uses conventional sealing materials, preferably fluororubber. By providing a sealing lip, the sealing performance can be increased.

[0030] Furthermore, the inner wall of the second tube 2 is provided with a hinge groove 9 along the axial direction to cooperate with the hinge shaft 8. An insert 10 is provided at the front end of the second tube 2 to close the hinge groove 9. During installation, the hinge shaft 8 of the valve plate 5 is placed into the hinge groove 9, and then the insert 10 is inserted. The hinge groove 9 is closed into a hole-shaped structure, in which the hinge shaft 8 can rotate freely.

[0031] An air pipe 11 is provided through the upper part of the inner cavity of the second pipe body 2. The hinge shaft 7 of the valve plate 5 is provided on both sides of the upper end of the valve plate 5. The rear end of the air pipe 11 is provided with an inclined surface 12 to avoid the flipping trajectory of the valve plate 5. After the valve plate 5 is flipped to the maximum angle, there is still a gap between the inclined surface 12 and the valve plate 5. In use, the liquid flows out from the liquid channel below the air pipe 11, and the gas enters from the inner cavity of the air pipe 11. The flipped valve plate 5 covers the lower part of the inclined surface 12, which can prevent the liquid from flowing into the air pipe 11 from the pipe opening on the inclined surface 12. By setting the air pipe 11, gas can be added when pouring oil to make up for the pressure difference. Preferably, the air pipe 11 is formed on the upper side wall of the second pipe body 2.

[0032] In this embodiment, the valve spring 6 is a tension spring, and the middle portions of the bracket 3 and the valve plate 5 are respectively provided with tension spring seats 13 for fixing the free ends of the tension springs; preferably, the tension spring seats 13 are respectively located at the axis of the first tube 1 and the valve plate 5.

[0033] In this embodiment, the bracket 3 is installed at the rear end of the first tube 1 and fixed by an axial limiting structure and a circumferential limiting structure. The specific installation structure is as follows: an axial limiting piece for the front end of the bracket 3 is formed on the inner wall of the first tube 1, and a retaining ring for the rear end of the bracket 3 is clamped thereon. A circumferential limiting block is provided at the front end of the bracket 3, and a circumferential limiting groove is provided on the axial limiting piece to cooperate with the circumferential limiting block for limiting. The axial limiting piece and the retaining ring form the axial limiting structure of the bracket 3, and the circumferential limiting block and the circumferential limiting groove form the circumferential limiting structure of the bracket 3. During installation, the bracket 3 is placed into the opening of the first tube 1, so that its rear side abuts against the axial limiting piece and the circumferential limiting block is clamped into the circumferential limiting groove. Then, the retaining ring is clamped into the annular groove of the opening to complete the installation.

[0034] In this embodiment, the front end of the first tube 1 is fitted onto the second tube 2. The main spring 7 is a compression spring, with its two ends respectively abutting against the spring seats 13 of the first tube 1 and the second tube 2. The first tube 1, the second tube 2, and the main spring 7 are coaxially arranged. The spring seat 14 on the first tube 1 is a stepped structure machined on the inner wall of the first tube 1. The spring seat 14 on the second tube 2 is a separately provided boss structure and fixed to the rear end of the second tube 2. A limiting structure is provided between the first tube 1 and the second tube 2 to limit the relative displacement stroke. Specifically, a tube limiting groove is provided on the first tube 1 along the axial direction, and a tube limiting block that cooperates with the limiting groove is provided on the outer wall of the second tube 2. The tube limiting groove and the tube limiting block cooperate to limit the relative movement stroke of the first tube 1 and the second tube 2.

[0035] Preferably, the sealing seat 4 is an annular structure and is fitted at the opening of the second tube body, the spring seat 14 of the second tube body 2 is an annular convex ring structure and is pressed onto the sealing seat 4, and the main spring 7 presses the spring seat 14 and the sealing seat 4 together.

[0036] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flip-top type oil drain pipe, comprising a first pipe body (1) and a second pipe body (2) that are fitted together and slide relative to each other along the axial direction, the first pipe body (1) being used to connect to the oil outlet of an oil supply device, and the second pipe body (2) being used to connect to the oil inlet of an oil receiving device, characterized in that, A bracket (3) is provided at the rear end of the first tube (1), and a sealing seat (4) is provided at the rear end of the second tube (2). A rotatable valve plate (5) is provided on the front side of the sealing seat (4). The valve plate (5) is connected to the bracket (3) by a valve plate spring (6). A main spring (7) for tensioning the tube and the valve plate spring (6) is provided between the first tube (1) and the second tube (2). After the valve plate spring (6) is stretched, it tightens the valve plate (5). The valve plate (5) covers the sealing seat (4) and seals the inner cavity of the second tube (2). When the first tube (1) and the second tube (2) slide relative to each other, the valve plate spring (6) pushes the valve plate (5) to flip and open the inner cavity of the second tube (2).

2. A flip-top oil pouring spout according to claim 1, wherein The valve plate (5) is hinged to the inner wall of the second pipe body (2), the front end of the sealing seat (4) is provided with a sealing lip, the rear side of the valve plate (5) is in contact with the sealing lip and forms a sealing structure, and the diameters of the sealing lip and the valve plate (5) are both smaller than the pipe diameter of the second pipe body (2).

3. A flip-top oil pouring spout according to claim 2, wherein The inner wall of the second tube (2) is provided with a hinge groove (9) that mates with the hinge shaft (8) along the axial direction, and an insert (10) that closes the hinge groove (9) is provided at the front end of the second tube (2).

4. The flip-top oil pouring spout of claim 2, wherein, An air pipe (11) is provided through the upper part of the inner cavity of the second tube (2). The hinge shaft (8) of the valve plate (5) is provided on both sides of the upper end of the valve plate (5). The rear end of the air pipe (11) is provided with an inclined surface (12) to avoid the flipping trajectory of the valve plate (5). After the valve plate (5) is flipped to the maximum angle, there is still a gap between the inclined surface (12) and the valve plate (5).

5. The flip-top oil pouring spout of claim 1, wherein, The valve spring (6) is a tension spring, and the middle part of the bracket (3) and the valve plate (5) are respectively provided with tension spring seats (13) to fix the free end of the tension spring.

6. The flip-top oil pouring spout of claim 1, wherein, The bracket (3) is installed at the rear end of the first tube (1) and fixed by an axial limiting structure and a circumferential limiting structure.

7. The flip-top oil pouring spout of claim 1, wherein, The main spring is a compression spring, with its two ends respectively abutting against the spring seats (14) of the first tube (1) and the second tube (2). The first tube (1), the second tube (2) and the main spring are coaxially arranged. A limiting structure is provided between the first tube (1) and the second tube (2) to limit the relative displacement stroke.

8. A flip-top oil pouring spout according to claim 7, wherein The sealing seat (4) is an annular structure and is fitted at the opening of the second tube (2). The spring seat (14) of the second tube (2) is an annular convex ring structure and is pressed onto the sealing seat (4). The main spring presses the spring seat (14) and the sealing seat (4).

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