Oil-gas mixing pump for rim lubricating device

Abstract

The utility model relates to an oil-gas mixing pump for a rim lubricating device. The oil-gas mixing pump comprises a pump body part, a piston base, a piston part, a valve body spring, a check valve seat part, a valve body part, an adapter and a mixing block, the pump body part is connected with the adapter, and the adapter is communicated with an air inlet of the mixing block; the piston base is arranged in the pump body part, and a middle hole is formed in the axis of the piston base; the piston part is arranged in a middle hole of the piston base; the valve body spring is sleeved on the piston base; one end of the check valve seat part is hermetically connected with the pump body part, the other end of the check valve seat part is hermetically connected with the valve body part, and a cavity of the check valve seat part is communicated with a middle hole of the piston base and a cavity of the valve body part; a large steel ball for sealing is arranged in the check valve seat part; a small steel ball for sealing is arranged in the valve body part, a through hole is formed in the side wall of the valve body part, and the valve body part is mounted on the mixing block and is communicated with the air inlet and the air outlet of the mixing block. The oil-gas mixing pump adopts a double-check design of the large steel ball and the small steel ball, and has a double-leakage-proof function.

Description

Technical Field

[0001] This utility model belongs to the field of current collector technology in rail transit, and relates to oil-gas mixing pumps, specifically to an oil-gas mixing pump for wheel flange lubrication devices. Background Technology

[0002] The locomotive wheel flange is the contact surface between the train and the railway track, undertaking various functions such as steering, braking, and traction. During operation, the contact friction and wear between the locomotive wheel flange and the track seriously affect the safety and economy of train operation. Therefore, flange lubrication technology is needed to reduce this friction and wear. The oil-air mixing pump is a crucial component of the flange lubrication system. The effectiveness of oil-air mixing affects the uniformity of spraying and the quality of lubrication. Existing oil-air mixing pumps have a single check valve seal structure, which is prone to oil leakage. Furthermore, existing oil-air mixing pumps lack a check valve head and a transition buffer, resulting in fluctuating and unstable oil output, causing uneven oil-air mixing, poor lubrication, and potential environmental pollution. Therefore, the development of a new type of oil-air mixing pump for flange lubrication systems is imperative. Summary of the Invention

[0003] In view of the above-mentioned technical problems and shortcomings, the purpose of this utility model is to provide an oil-gas mixing pump for a wheel flange lubrication device. The oil-gas mixing pump adopts a double check design with large and small steel balls, which has a double anti-leakage function. Moreover, it is equipped with a check valve head, which can not only quantitatively control the incoming lubricating oil, but also provide a transition buffer for the incoming lubricating oil, so that the oil-gas mixture is more uniform and sufficient, improves the lubrication effect, and reduces environmental pollution.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An oil-gas mixing pump for a wheel rim lubrication device includes a pump body, a piston base, a piston, a valve body spring, a check valve seat, a valve body, an adapter, and a mixing block; wherein the pump body is connected to the adapter, and the adapter is connected to the air inlet of the mixing block, so that the gas input from the air inlet of the mixing block is introduced into the cavity of the pump body through the adapter, thereby driving the piston to move.

[0006] The piston base is located inside the pump body, and a central hole is provided at the axis of the piston base; the piston part is located inside the central hole of the piston base; the valve body spring is fitted on the piston base and is used to reset the piston part; the side of the piston base is provided with an oil inlet hole communicating with the oil tank, through which the lubricating oil in the oil tank enters the central hole of the piston base.

[0007] One end of the check valve seat is sealed to the pump body, and the other end is sealed to the valve body. The cavity of the check valve seat is connected to the middle hole of the piston base and the cavity of the valve body. A large steel ball for sealing is provided inside the check valve seat. A small steel ball for sealing is provided inside the valve body. The side wall is provided with a through hole. The valve body is installed on the mixing block and is connected to the air inlet and air outlet of the mixing block.

[0008] As a preferred embodiment of this utility model, the check valve seat includes a check valve seat, a large steel ball, a large check valve spring, and a check valve top. The large steel ball, the large check valve spring, and the check valve top are installed in the cavity of the check valve seat. The check valve set screw is connected to the check valve seat. An oil passage gap is reserved between the check valve set screw and the check valve top, and the oil passage gap communicates with the through hole of the check valve set screw and the cavity of the check valve seat.

[0009] As a preferred embodiment of this utility model, the valve body includes a valve body, a small check spring, a small steel ball, and a valve seat. The small check spring and the small steel ball are sequentially installed in the cavity of the valve body. The valve seat is connected to the valve body and has a through hole. The cavity of the check valve seat is connected to the cavity of the valve body through the through hole. The side wall of the valve body has a through hole. Another gas input from the air inlet of the mixing block enters the valve body and mixes with the lubricating oil in the valve body, and then is discharged through the air outlet of the mixing block.

[0010] As a preferred embodiment of this utility model, the piston part includes a piston rod and a piston rod cover. The piston rod and the piston rod cover are connected and fixed together. The piston rod is inserted into the middle hole of the piston base. A sealing bowl is fastened to the piston rod cover. A piston partition is provided on the sealing bowl. Another sealing bowl is provided on the piston partition. The two sealing bowls are symmetrically assembled and the piston partition is sandwiched in the middle.

[0011] As a preferred embodiment of this utility model, the pump body includes a pump body and a top cover. An O-ring is installed in the groove of the pump body, and the top cover is connected to the pump body and sealed by the O-ring.

[0012] As a preferred embodiment of this invention, the valve body passes through the mixing block and is then fitted with a copper gasket to connect with the check valve seat.

[0013] As a preferred embodiment of this invention, the cross-section of the check valve head is a T-shaped structure.

[0014] As a preferred embodiment of this invention, the valve seat has a T-shaped cross-section.

[0015] Advantages and beneficial effects of this utility model:

[0016] (1) The oil-gas mixing pump provided by this utility model adopts a double check design with large steel balls and small steel balls, which has a double anti-leakage function and effectively solves the problem of easy oil leakage of existing oil-gas mixing pumps.

[0017] (2) The oil-gas mixing pump provided by this utility model is equipped with a check valve head. The lubricating oil passes through both sides of the check valve head, which can not only quantitatively control the lubricating oil entering, but also provide a transition buffer for the lubricating oil entering, so that the oil-gas mixing is more uniform and sufficient, improves the lubrication effect, and reduces the pollution to the environment.

[0018] (3) The oil-gas mixing pump provided by this utility model has a compact structure, simple mechanical structure and high reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of an oil-gas mixing pump;

[0021] Figure 2 for Figure 1 Cross-sectional view of the oil-gas mixing pump along AA;

[0022] Figure 3 This is a top view of an oil-gas mixing pump.

[0023] Figure reference numerals: 1. Pump body; 2. Top cover; 3. Check valve seat; 4. Mixing block; 5. Piston rod top cover; 6. Piston partition; 7. Piston base; 8. Piston rod; 9. Check valve set screw; 10. Check valve top head; 11. Adapter; 12. Large check valve spring; 13. Small check valve spring; 14. Valve body; 15. Valve seat; 16. Valve body spring; 17. Copper gasket; 18. Sealing bowl; 19. O-ring; 20. Large steel ball; 21. Small steel ball. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] like Figures 1 to 3 As shown, this embodiment provides an oil-gas mixing pump for a wheel flange lubrication device. The oil-gas mixing pump is a component used in a wheel flange lubrication device on a subway or light rail train, including a pump body, a piston base 7, a piston, a valve body spring 16, a check valve seat, a valve body, an adapter 11, and a mixing block 4.

[0027] The pump body is threadedly connected to the adapter 11, and the adapter 11 is connected to the air inlet 4.1 of the mixing block 4. The gas input from the air inlet 4.1 of the mixing block 4 is introduced into the cavity of the pump body through the adapter 11, thereby driving the piston to move.

[0028] The piston base 7 is disposed inside the pump body and is threadedly connected to the pump body. The piston base 7 has a central hole at its axial center. The piston part is inserted into the central hole of the piston base 7. The valve body spring 16 is fitted on the piston base 7 and is used to reset the piston part. The side of the piston base 7 has an oil inlet hole 7.1 that communicates with the oil tank. The lubricating oil in the oil tank enters the central hole of the piston base 7 through the oil inlet hole 7.1.

[0029] One end of the check valve seat is sealed to the pump body and the other end is sealed to the valve body. The cavity of the check valve seat is connected to the middle hole of the piston base 7 and the cavity of the valve body. The check valve seat is provided with a large steel ball 20 for sealing. The valve body is provided with a small steel ball 21 for sealing. The side wall is provided with a through hole. The valve body is installed on the mixing block 4 and is connected to the air inlet 4.1 and air outlet 4.2 of the mixing block 4.

[0030] Furthermore, such as Figure 2 As shown, in this embodiment, the check valve seat includes a check valve seat 3, a large steel ball 20, a large check valve spring 12, and a check valve top 10. The large steel ball 20, the large check valve spring 12, and the check valve top 10 are installed in the cavity of the check valve seat 3. The check valve set screw 9 is threadedly connected to the check valve seat 3 (the check valve set screw 9 and the check valve seat 3 are mounted together). An oil passage gap is reserved between the check valve set screw 9 and the check valve top 10. The oil passage gap communicates with the through hole of the check valve set screw 9 and the cavity of the check valve seat 3.

[0031] Furthermore, such as Figure 2As shown, in this embodiment, the valve body includes a valve body 14, a small check spring 13, a small steel ball 21, and a valve seat 15. The small check spring 13 and the small steel ball 21 are sequentially installed in the cavity of the valve body 14. The valve seat 15 is threadedly connected to the valve body 14 (the valve seat 15 and the valve body 14 are mounted together). The valve seat 15 is provided with a through hole, which connects the cavity of the check valve seat 3 with the cavity of the valve body 14. The side wall of the valve body 14 is provided with a through hole, through which another gas input from the air inlet 4.1 of the mixing block 4 enters the valve body 14 and mixes with the lubricating oil in the valve body 14, and then is discharged through the air outlet 4.2 of the mixing block 4.

[0032] Furthermore, such as Figure 2 As shown, in this embodiment, the piston part includes a piston rod 8 and a piston rod cover 5. The piston rod 8 and the piston rod cover 5 are connected and fixed together by countersunk screws. The piston rod 8 is inserted into the middle hole of the piston base 7. A sealing bowl 18 is fastened on the piston rod cover 5. A piston partition 6 is provided on the sealing bowl 18. Another sealing bowl 18 is provided on the piston partition 6. The two sealing bowls 18 are symmetrically assembled and sandwich the piston partition 6 in the middle.

[0033] Furthermore, such as Figure 2 As shown, in this embodiment, the pump body includes a pump body 1 and an upper cover 2. An O-ring 19 is installed in the groove of the pump body 1. The upper cover 2 is threadedly connected to the pump body 1 and is sealed by the O-ring 19.

[0034] Furthermore, such as Figure 2 As shown, in this embodiment, the valve body passes through the mixing block 4, and then a copper gasket 17 is threaded through it to connect with the check valve seat; the valve seat 15 has a T-shaped cross-section, and the check valve top 10 has a T-shaped cross-section.

[0035] Working principle:

[0036] The oil-gas mixing pump of this utility model is mounted on the oil tank through four mounting holes and sealing gaskets on the flange of the pump body 1. The part of the pump body above the flange is inside the oil tank and immersed in lubricating oil. Compressed air is introduced into the air inlet 4.1 of the mixing block 4. After being diverted by the valve body 14, part of it goes upward through the adapter 11 into the cavity of the pump body 1. The gas pushes the sealing bowl 18 downward, which drives the piston partition 6, the other sealing bowl 18, and the piston part to move downward. This pushes the lubricating oil that enters through the oil inlet 7.1 downward. The large steel ball 20 moves downward, and the lubricating oil enters the check valve seat 3. It continues to pass through the oil gaps on both sides of the check valve top 10. Pushing downwards, the small steel ball 21 moves downwards, and the lubricating oil enters the valve body. The other part of the diverted gas enters the valve body and mixes with the lubricating oil, atomizing the lubricating oil to form an oil-gas mixture, which is discharged through the outlet 4.2 of the mixing block 4. After the air inlet 4.1 stops intake, the small steel ball 21 is reset and sealed by the action of the small check valve spring 13, and the large steel ball 20 is reset and sealed by the action of the large check valve spring 12. The piston, sealing bowl 18, and piston partition 6 are reset by the action of the valve body spring 16. The above actions are repeated when the air is intermittently turned on and off. With the help of the pipeline and controller of the wheel flange lubrication device, the train wheels can be sprayed with lubricant according to the settings.

[0037] The above are specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto.

Claims

1. An oil-air mixing pump for a wheel flange lubricating device, characterized by, It includes a pump body, a piston base, a piston, a valve body spring, a check valve seat, a valve body, an adapter, and a mixing block; wherein the pump body is connected to the adapter, and the adapter is connected to the air inlet of the mixing block, so that the gas input from the air inlet of the mixing block is introduced into the cavity of the pump body through the adapter, thereby driving the piston to move. The piston base is located inside the pump body, and a central hole is provided at the axis of the piston base; the piston part is located inside the central hole of the piston base; the valve body spring is fitted on the piston base and is used to reset the piston part; the side of the piston base is provided with an oil inlet hole communicating with the oil tank, through which the lubricating oil in the oil tank enters the central hole of the piston base. One end of the check valve seat is sealed to the pump body, and the other end is sealed to the valve body. The cavity of the check valve seat is connected to the middle hole of the piston base and the cavity of the valve body. A large steel ball for sealing is provided inside the check valve seat. A small steel ball for sealing is provided inside the valve body. The side wall is provided with a through hole. The valve body is installed on the mixing block and is connected to the air inlet and air outlet of the mixing block.

2. The oil-air mixing pump for a rim lubricating device according to claim 1, characterized by The check valve seat includes a check valve seat, a large steel ball, a large check valve spring, and a check valve top. The large steel ball, the large check valve spring, and the check valve top are installed in the cavity of the check valve seat. The check valve set screw is connected to the check valve seat. An oil passage gap is reserved between the check valve set screw and the check valve top, and the oil passage gap communicates with the through hole of the check valve set screw and the cavity of the check valve seat.

3. The oil-air mixing pump for a rim lubricating apparatus according to claim 1, characterized by The valve body includes a valve body, a small check spring, a small steel ball, and a valve seat. The small check spring and the small steel ball are sequentially installed in the cavity of the valve body. The valve seat is connected to the valve body and has a through hole, which connects the cavity of the check valve seat to the cavity of the valve body. The side wall of the valve body has a through hole, through which another gas input from the air inlet of the mixing block enters the valve body and mixes with the lubricating oil in the valve body, and then is discharged through the air outlet of the mixing block.

4. The oil-air hybrid pump for a rim lubrication device according to claim 1, characterized by The piston part includes a piston rod and a piston rod cover. The piston rod and the piston rod cover are connected and fixed together. The piston rod is inserted into the middle hole of the piston base. A sealing bowl is fastened on the piston rod cover. A piston partition is provided on the sealing bowl. Another sealing bowl is provided on the piston partition. The two sealing bowls are symmetrically assembled and the piston partition is sandwiched in the middle.

5. The oil-air hybrid pump for a rim lubrication device according to claim 1, characterized by The pump body includes a pump body and a top cover. An O-ring is installed in the groove of the pump body. The top cover is connected to the pump body and is sealed by the O-ring.

6. The oil-air hybrid pump for a rim lubrication device according to claim 1, characterized by The valve body passes through the mixing block, and then a copper gasket is installed to connect with the check valve seat.

7. The oil-air hybrid pump for a rim lubrication device according to claim 2, characterized by The check valve head has a T-shaped cross-section.

8. The oil-air hybrid pump for a rim lubrication device according to claim 3, characterized by The valve seat has a T-shaped cross-section.

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