Heavy oil unloading pipe with rotating function

Abstract

The utility model relates to the technical field of asphalt container oil unloading, specifically to a heavy oil unloading pipe with rotation function. Including oil pipe and lower oil pipe, its between being provided with rotary connection structure, the rotary connection structure includes the bearing seat with step hole and with lower oil pipe fixed connection, bearing is arranged in the bearing seat, and the outer surface of bearing and the circumferential surface of bearing seat step hole are closely matched, and the lower end surface and the step surface between bearing seat of bearing are provided with lower sealing ring, bearing inner surface and upper oil pipe outer circumferential surface closely cooperate, and the upper surface of bearing seat passes through bolt mounting bearing gland, and upper sealing ring is arranged between bearing gland and bearing and the upper surface of bearing seat, and upper sealing ring and upper oil pipe outer circumferential surface seal cooperation, and there is a gap between upper oil pipe and the inner wall of the through -hole of bearing gland and bearing seat lower bottom surface and the inner wall of lower oil pipe. The scheme effectively avoids the repeated bending of the hose, improves the service life of the hose, reduces the use cost, prevents the risk of personnel scalding caused by hose rupture.

Description

Technical Field

[0001] This utility model relates to the field of asphalt container unloading technology, specifically a heavy oil unloading pipe with a rotation function. Background Technology

[0002] Asphalt is a petroleum processing product, a complex, dark brown mixture composed of hydrocarbons of varying molecular weights and their derivatives. It typically requires high-temperature liquid transportation and unloading, and solidifies upon cooling.

[0003] Currently, when unloading asphalt containers, hoses (rubber or metal) are used to discharge heated asphalt into the trench. During operation, the hoses need to be repeatedly bent to adapt to angles and space constraints. This easily leads to structural fatigue, inner lining damage, or outer layer cracking in rubber hoses, significantly shortening their lifespan and increasing costs. Although metal hoses are more heat-resistant and have some bending resistance, asphalt easily cools and solidifies on the inner wall during the transportation process or work breaks, causing the hose to lose its flexibility and become stiff. Subsequent movement, disassembly, or adjustment becomes difficult, and forced operation can easily cause brittle fracture of the metal hose or its joints. Once the hose is damaged and leaks, there is a risk of burns to personnel. Utility Model Content

[0004] The purpose of this invention is to design a heavy oil unloading pipe with a rotation function that avoids hose bending and allows for angle adjustment.

[0005] This utility model includes an upper oil pipe and a lower oil pipe, with a rotatable connection structure between them. The rotatable connection structure includes a bearing housing with a stepped hole and fixedly connected to the lower oil pipe. A bearing is disposed in the bearing housing, with its outer surface tightly fitted to the circumferential surface of the stepped hole in the bearing housing. A lower sealing ring is disposed between the lower end face of the bearing and the stepped surface of the bearing housing. The inner surface of the bearing is tightly fitted to the outer circumferential surface of the upper oil pipe. A bearing cap is bolted to the upper surface of the bearing housing, and an upper sealing ring is disposed between the bearing cap, the bearing, and the upper surface of the bearing housing. The upper sealing ring is in a sealing fit with the outer circumferential surface of the upper oil pipe. A gap is left between the upper oil pipe and the inner wall of the through hole on the lower bottom surface of the bearing cap and the lower oil pipe.

[0006] Furthermore, the outer diameter of the upper oil pipe is smaller than the inner diameter of the lower oil pipe, the lower end of the upper oil pipe extends into the lower oil pipe, and the outer circumferential surface of the upper oil pipe is sealed to the lower sealing ring.

[0007] Furthermore, at least one of the upper and lower oil pipes is a bend.

[0008] Furthermore, the bending angle of the upper or lower oil pipe is 90 degrees.

[0009] Furthermore, the upper end of the lower oil pipe is welded to the bearing housing.

[0010] Furthermore, the upper surface of the bearing housing is flush with the upper surface of the bearing, and the upper and lower surfaces of the upper sealing ring are planar.

[0011] The beneficial effects of this utility model are as follows: This utility model consists of two parts: an upper oil pipe and a lower oil pipe. The connection between the upper and lower oil pipes adopts a rotating connection structure, allowing the upper oil pipe to rotate relative to the lower oil pipe. In use, the lower oil pipe is placed at the upper end of the drain trough and fixed in place, then connected to the trough with a rubber hose. The angle of the upper oil pipe can be adjusted according to the position of the unloading valve of the asphalt container, and it is connected to the unloading valve of the asphalt container with a rubber hose. The hose connected to the trough remains relatively stationary, thus effectively avoiding repeated bending and stress on the hose, increasing its service life, reducing operating costs, and preventing the risk of burns caused by hose breakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the full cross-section of the present invention;

[0013] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the disassembled upper and lower oil pipes (partial cross-section of the lower oil pipe).

[0015] Among them, 1. upper oil pipe, 2. bearing cap, 3. upper sealing ring, 4. bearing, 5. lower sealing ring, 6. bearing housing, 7. lower oil pipe, 8. stepped hole, 9. bolt, 10. rubber hose. Detailed Implementation

[0016] Unless otherwise specified, this utility model is based on Figure 1 The vertical direction is defined as shown in this embodiment.

[0017] As shown in the figure, this embodiment includes an upper oil pipe 1 and a lower oil pipe 7. At least one of the upper oil pipe 1 and the lower oil pipe 7 is a bend, and the bending angle of the upper oil pipe 1 or the lower oil pipe 7 is 90 degrees to facilitate connection with asphalt containers and oil drainage trenches. It is optimal that both the upper oil pipe 1 and the lower oil pipe 7 are bends, and they are made of metal materials with a certain degree of rigidity. The upper oil pipe 1 and the lower oil pipe 7 are arranged vertically, connected at opposite ends by a rotating connection structure, and the other ends are respectively used with hoses, preferably rubber hoses 10.

[0018] A rotatable connection structure is provided between the upper oil pipe 1 and the lower oil pipe 7. The rotatable connection structure includes a bearing housing 6 with a stepped hole 8 and fixedly connected to the lower oil pipe 7, a bearing 4, an upper sealing ring 3, a lower sealing ring 5, and a bearing cap 2. The bearing 4 is disposed in the bearing housing 6, and the outer surface of the bearing 4 is tightly fitted with the circumferential surface of the stepped hole 8 of the bearing housing. A lower sealing ring 5 is provided between the lower end face of the bearing 4 and the stepped surface of the bearing housing 6. The inner surface of the bearing 4 is tightly fitted with the outer circumferential surface of the upper oil pipe 1. The bearing cap 2 is installed on the upper surface of the bearing housing 6 by bolts 9. An upper sealing ring 3 is provided between the bearing cap 2, the bearing 4, and the upper surface of the bearing housing 6, and the upper sealing ring 3 is sealed with the outer circumferential surface of the upper oil pipe 1. A gap is left between the upper oil pipe 1, the bearing cap 2, the inner wall of the through hole on the bottom surface of the bearing housing 6, and the inner wall of the lower oil pipe 7.

[0019] In this embodiment, the bearing housing 6 is located on the upper end face of the lower oil pipe 7. The upper end of the lower oil pipe 1 is welded to the bearing housing 6, so that the bearing housing 6 and the upper end face of the lower oil pipe 7 are fixedly connected. The bearing housing 6 has a stepped hole 8 along its axis that communicates with the inner cavity of the lower oil pipe 7. The stepped hole 8 allows the bearing housing 6 to pass through vertically. The upper diameter of the stepped hole 8 is larger than the lower diameter to form a stepped surface. The diameter of the through hole on the bottom surface of the bearing housing 6 (the lower diameter of the stepped hole 8) corresponds to the inner diameter of the connected lower oil pipe 7. The upper diameter of the stepped hole 8 is tightly fitted with the outer surface of the bearing 4, and a lower sealing ring 5 is provided above the stepped surface.

[0020] The outer diameter of the upper oil pipe 1 is smaller than the inner diameter of the lower oil pipe 7. The lower end of the upper oil pipe 1 extends into the lower oil pipe 7, and the outer circumferential surface of the upper oil pipe 1 is sealed to the lower sealing ring 5. A bearing 4 is tightly fitted to the outer circumferential surface of the lower end of the upper oil pipe 1. The tight fit between the inner surface of the bearing 4 and the outer circumferential surface of the upper oil pipe 1 is an interference fit. The outer surface of the bearing 4 fits the upper circumferential surface of the stepped hole 8 of the bearing seat 6.

[0021] In this embodiment, the lower end of the upper oil pipe 1 passes through the stepped hole 8 of the bearing seat 6 at the upper end of the lower oil pipe 7 to the inner cavity of the lower oil pipe 7. As the bearing 4, which is tightly fitted to the outer circumferential surface of the upper oil pipe 1, extends into the inner cavity of the lower oil pipe 7 along with the lower end of the upper oil pipe 1, the lower end face of the bearing 4 engages with the stepped surface of the bearing seat 6 when it extends into the stepped hole 8, thereby limiting the movement of the upper oil pipe 1. A gap is left between the outer circumferential surface of the upper oil pipe 1, the through hole on the lower bottom surface of the bearing seat 6, and the inner wall of the lower oil pipe 7 to prevent friction caused by the rotation of the upper oil pipe 1 relative to the lower oil pipe 7, thus improving its service life.

[0022] A bearing 4 is fitted tightly above the stepped surface of the bearing housing 6. A lower sealing ring 5 is provided between the lower end face of the bearing 4 and the stepped surface of the bearing housing 6, and the lower sealing ring 5 is sealed to the outer circumferential surface of the upper oil pipe 1. The upper surface of the bearing housing 6 is flush with the upper surface of the bearing 4, and the tight fit between the bearing 4 and the bearing housing 6 is a transition fit, which facilitates the installation and disassembly of the rotating connection structure between the upper oil pipe 1 and the lower oil pipe 7.

[0023] A bearing cap 2 is mounted on the upper surface of the bearing housing 6 using bolts 9. An upper sealing ring 3 is provided between the bearing cap 2, the bearing 4, and the upper surface of the bearing housing 6. The upper sealing ring 3 is in a sealing fit with the outer circumferential surface of the upper oil pipe 1. The upper surface of the bearing housing 6 is flush with the upper surface of the bearing 4. The upper and lower surfaces of the upper sealing ring 3 are flat. The upper sealing ring 3 is located on the upper surfaces of the bearing housing 6 and the bearing 4 and is in a sealing fit with the outer circumferential surface of the upper oil pipe 1. The bearing cap 2 is located above the upper sealing ring 3. The bearing cap 2, the upper sealing ring 3, and the bearing housing 6 are fixed by bolts 9, thereby realizing the rotatable connection between the upper oil pipe 1 and the lower oil pipe 7. The bearing cap 2 has a through hole in its center that fits with the outer circumferential surface of the upper oil pipe 1. A gap is left between the upper oil pipe 1 and the bearing cap 2 to prevent wear during rotation.

[0024] In this embodiment, the lower oil pipe 1 is first fixedly installed above the oil drain trough using a supporting structure. The upper oil pipe 1 and the lower oil pipe 7 are rotatably connected at opposite ends via a rotating connection structure. The other ends of the upper oil pipe 1 and the lower oil pipe 7 are respectively fixedly connected to rubber hoses 10 via iron hoops. The other end of the upper oil pipe 1 is connected to the unloading valve of the asphalt container via the rubber hose 10, and the other end of the lower oil pipe 7 is connected to the oil drain trough via the rubber hose 10. Because the lower oil pipe 7 is fixed, while the upper oil pipe 1 is rotatably connected to the lower oil pipe 7 via the rotating connection structure, the upper oil pipe 1 can rotate relative to the lower oil pipe 7. The angle of the upper oil pipe 1 can be adjusted according to the position of the unloading valve of the asphalt container. The rubber hose 10 is then connected to the unloading valve of the asphalt container, and the rubber hose 10 connected to the oil drain trough remains relatively stationary. This effectively avoids repeated bending and stress on the rubber hose 10, increases its service life, reduces operating costs, and prevents the risk of burns caused by hose breakage.

[0025] After unloading the oil, remove and store the rubber hose 10. If there are other oil draining troughs that need to be drained, the unloading pipe can be removed, moved, and fixed above the oil draining trough that needs to be drained to carry out the unloading operation, thereby improving the resource utilization rate.

[0026] The support structure mentioned above can refer to existing technology, which can be used to fix and support the lower oil pipe 7, and will not be described in detail here.

Claims

1. A heavy oil unloading pipe with a rotation function, characterized in that: It includes an upper oil pipe and a lower oil pipe, with a rotatable connection structure between them. This rotatable connection structure includes a bearing housing with a stepped hole and fixedly connected to the lower oil pipe. A bearing is housed in the bearing housing, with its outer surface tightly fitted to the circumferential surface of the stepped hole in the bearing housing. A lower sealing ring is provided between the lower end face of the bearing and the stepped surface of the bearing housing. The inner surface of the bearing tightly fits the outer circumferential surface of the upper oil pipe. A bearing cap is bolted to the upper surface of the bearing housing, and an upper sealing ring is provided between the bearing cap, the bearing, and the upper surface of the bearing housing. The upper sealing ring provides a sealing fit with the outer circumferential surface of the upper oil pipe. Gaps are left between the upper oil pipe and the inner wall of the through hole in the lower bottom surface of the bearing cap and bearing housing, as well as the inner wall of the lower oil pipe.

2. The heavy oil unloading pipe with rotation function according to claim 1, characterized in that: The outer diameter of the upper oil pipe is smaller than the inner diameter of the lower oil pipe, the lower end of the upper oil pipe extends into the lower oil pipe, and the outer circumferential surface of the upper oil pipe is sealed to the lower sealing ring.

3. The heavy oil unloading pipe with rotation function according to claim 1 or 2, characterized in that: At least one of the upper and lower oil pipes is a bend.

4. The heavy oil unloading pipe with rotation function according to claim 3, characterized in that: The bending angle of the upper or lower oil pipe is 90 degrees.

5. The heavy oil unloading pipe with rotation function according to claim 1 or 2, characterized in that: The upper end of the lower oil pipe is welded to the bearing housing.

6. The heavy oil unloading pipe with rotation function according to claim 1 or 2, characterized in that: The upper surface of the bearing housing is flush with the upper surface of the bearing, and the upper and lower surfaces of the upper sealing ring are planes.

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