Oil gun

By designing an oil gun that uses an air pump, a blower, and a solenoid valve in conjunction with an atomizing nozzle, the problem of inconvenient operation in existing track lubrication systems has been solved, achieving a simple and efficient lubrication effect.

CN224253131UActive Publication Date: 2026-05-19CHINA RAILWAY SHANGHAI BUREAU GROUP CO LTD JINHUA HIGH-SPEED RAILWAY INFRASTRUCTURE SECTION +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY SHANGHAI BUREAU GROUP CO LTD JINHUA HIGH-SPEED RAILWAY INFRASTRUCTURE SECTION
Filing Date
2025-06-10
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing rail lubrication methods are inconvenient to operate, have a small coverage area, and suffer significant losses, making it difficult to efficiently lubricate the wheel and rail.

Method used

An oil gun was designed that uses an air pump, a blower, and a solenoid valve to atomize and spray oil through an atomizing nozzle, enabling a simple and wide-range lubrication operation.

Benefits of technology

It achieves a lubrication effect that is simple to operate, has a wide coverage, and has low wear, thus improving the efficiency and effectiveness of track lubrication.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224253131U_ABST
    Figure CN224253131U_ABST
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Abstract

The utility model discloses an oil gun which comprises a gun body and a trigger assembly arranged on the gun body, the bottom face of a horizontal part in the gun body protrudes outwards to form a connecting end, and the connecting end is provided with a connecting port used for butt joint of a bottle body, when the oil gun is used, an oil storage bottle is installed at the connecting port, and an oil conveying pipe and a gas conveying pipe are communicated with the oil storage bottle. The trigger is pulled to start the air pump, the electromagnetic valve, the draught fan and the like, the air pump pressurizes the oil storage bottle so that oil in the oil storage bottle can be pressed into the oil conveying pipe and input into the atomizing nozzle after passing through the electromagnetic valve, the draught fan pressurizes the atomizing nozzle synchronously, and therefore the oil can be sprayed out of the atomizing nozzle in an atomized mode, operation is easy, use is convenient, the coverage area is large, and loss is small.
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Description

Technical Field

[0001] This utility model relates to the field of oil injection device technology, specifically to an oil gun. Background Technology

[0002] The track needs to be lubricated frequently during use to reduce wear, improve the friction between the wheels and the track, reduce running resistance, noise and wear. Common lubrication methods include spraying oil from a handheld oil bottle by the operator. However, this method is inconvenient, covers a small area, and results in significant wear and tear, and needs to be improved. Utility Model Content

[0003] To address at least one of the aforementioned technical deficiencies, this utility model provides the following technical solution:

[0004] This application discloses an oil gun, including a gun body and a trigger assembly mounted on the gun body. The gun body includes a horizontal part connected to the gun body and a vertical part for gripping. A connecting end is provided on the bottom surface of the horizontal part in front of the vertical part, and a connecting port for connecting to a bottle is provided at the connecting end. An atomizing nozzle is provided at the opening of the chamber at the front end of the horizontal part, and an air pump, a blower, and an oil delivery pipe are provided in the chamber behind the atomizing nozzle. An air delivery pipe connected to the air outlet of the air pump extends to the connecting port. One end of the oil delivery pipe is located at the connecting port, and the other end is connected to the atomizing nozzle. A solenoid valve for controlling the on / off state is provided on the oil delivery pipe. The air outlet of the blower is connected to the atomizing nozzle through the pipe body. The blower, air pump, solenoid valve, and trigger assembly are connected to control the start and stop of the oil delivery. The blower causes the oil entering the atomizing nozzle to be sprayed out in a mist.

[0005] When in use, the oil storage bottle is installed at the connection port, and the oil supply pipe and air supply pipe are connected to the oil storage bottle. Pulling the trigger starts the air pump, solenoid valve and blower. The air pump pressurizes the oil storage bottle, which in turn forces the oil in the bottle into the oil supply pipe. After passing through the solenoid valve, it is input into the atomizing nozzle. The blower pressurizes the atomizing nozzle at the same time, so that the oil is atomized and sprayed out from the atomizing nozzle. It is simple to operate, convenient to use, has a large coverage area and low loss.

[0006] For atomizing nozzles, it is preferable to purchase them directly from the market or to adopt the following configuration:

[0007] Furthermore, the atomizing nozzle includes a cylindrical body, within which are disposed a first cavity and a second cavity. The second cavity surrounds the first cavity, and the outlets of both the first and second cavities are located at the front end face of the cylindrical body. The outlet of the second cavity faces the outlet of the first cavity. The inlet of the second cavity is connected to the pipe body, and the first cavity is connected to the oil supply pipe. The airflow ejected from the outlet of the second cavity impacts the oil ejected from the outlet of the first cavity, atomizing it through impact. This atomizing nozzle structure can better atomize the oil.

[0008] Furthermore, the cylinder includes a front section and a rear section connected to each other. A portion of the cavity in the rear section is connected to the oil pipeline. The pipe body is connected to the rear section, and the inlet of a portion of the cavity in the rear section is connected to the inside of the pipe body. The split structure of the front and rear sections is convenient to form and can be replaced in a targeted manner during subsequent maintenance, which helps to reduce maintenance costs.

[0009] Furthermore, the cavity opening at the first end of the cylinder gradually narrows in diameter in the axial direction. This narrowing of the diameter pressurizes the oil and improves the atomization effect.

[0010] Furthermore, a flow regulating valve, such as a manual type, is installed on the oil supply pipe downstream of the solenoid valve to adjust the flow rate as needed.

[0011] Furthermore, it also includes an oil storage bottle, the mouth of which is connected to a connection port, and the ends of the gas supply pipe and oil supply pipe at the connection port are inserted into the channel at the mouth of the oil storage bottle to connect them.

[0012] Furthermore, the trigger assembly includes a trigger and a control circuit board, the control circuit board being connected to a fan, a solenoid valve, and an air pump.

[0013] Furthermore, a hanging ring is hinged at the top surface of the tail end of the horizontal section, which can be used to suspend the gun body for easy storage.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model is designed with an oil gun configuration that uses an air pump and a blower to atomize and spray the oil, making it convenient to use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of 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.

[0017] Figure 1 This is a schematic diagram of the structure of the oil gun in Example 1;

[0018] Figure 2 This is a schematic diagram of the internal structure of this oil gun;

[0019] Figure 3 This is a schematic diagram of the connection structure of the atomizing nozzle;

[0020] Figure 4 This is a schematic diagram of the overall structure of the atomizing nozzle;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the atomizing nozzle;

[0022] The attached figures are labeled as follows:

[0023] 1. Gun body; 2. Trigger assembly; 3. Atomizing nozzle; 4. Fan; 5. Tube body; 6. Air pump; 7. Oil reservoir; 8. Oil supply pipe; 9. Air supply pipe; 10. Solenoid valve; 11. Flow regulating valve; 12. Hanging ring; 20. Trigger; 21. Control circuit board; 31. Rear section; 32. Front section; 33. Cavity 1; 34. Orifice; 35. Cavity 2; 100. Horizontal section; 101. Longitudinal section; 102. Connecting end. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, in this example, the oil gun includes a gun body 1 and a trigger assembly 2. The gun body 1, in terms of its overall structure, includes a horizontal part 100 and a vertical part 101. The horizontal part 100 extends horizontally, and the vertical part 101 extends vertically. When in use, the vertical part is held. To facilitate the installation of internal parts, the gun body is formed in two separate parts, left and right.

[0027] The horizontal portion 100 in front of the longitudinal portion 101 has a protruding connecting end 102 at its bottom surface. The specific configuration of the connecting end can be selected according to requirements, as in this example. Figure 1 The L-shaped connecting end 102 shown has its lateral end facing the longitudinal part 101. A connecting port for connecting the bottle body is formed at the lateral end of the connecting end 102, such as the bottle mouth of an oil storage bottle being installed at the connecting port.

[0028] An atomizing nozzle 3 is installed at the opening of the horizontal section 100 that connects to the chamber. An air pump 6, a blower 4, and an oil supply pipe 8 for pressurization are installed in the chamber behind the atomizing nozzle 3. The air pump 6 is located behind the blower 4. An air supply pipe 9 connected to the air outlet of the air pump 6 extends forward from the chamber of the horizontal section 100 into the connection end 102 and extends to the connection port. One end of the oil supply pipe 8 is fixed at the connection port and the other end enters the chamber of the horizontal section 100 and is connected to the atomizing nozzle 3.

[0029] A solenoid valve 10 for controlling the on / off state is installed on the oil pipeline 8. The air outlet of the blower 4 is connected to the atomizing nozzle 3 through the pipe body 5. The blower 4, air pump 6, solenoid valve 10 are connected to the trigger assembly 2 to control the start and stop. The trigger assembly 2 may include a trigger 20 and a control circuit board 21. The control circuit board 21 is connected to the trigger 20, air pump 6, blower 4, solenoid valve 10, etc. The trigger 20 may be installed at the connection between the longitudinal part 101 and the horizontal part 100. The specific connection structure of the trigger can refer to the conventional method. This will not be elaborated further. When in use, the bottle mouth of the oil storage bottle 7 is installed at the corresponding connection port. The air supply pipe 9 and the oil supply pipe 8 are inserted into the hole at the bottle cap to connect with the oil storage bottle 7. By pulling the trigger with a finger, the air pump, blower and solenoid valve are started. The air pump pressurizes the oil storage bottle through the air supply pipe, so that the oil in the bottle enters the atomizing nozzle through the oil supply pipe and solenoid valve. The blower blows out airflow, so that the oil at the atomizing nozzle is sprayed out in a mist. When the finger is released, the trigger is reset, and the air pump, blower and solenoid valve stop accordingly.

[0030] Atomizing nozzles can be selected from the market according to needs; in this example, we use... Figure 3 , Figure 4 , Figure 5 The configuration shown is illustrated. Specifically, in this example, the atomizing nozzle 3 includes a cylinder 5, and a first cavity 33 and a second cavity 35 are formed inside the cylinder 5. Both the first cavity 33 and the second cavity 35 extend axially, and multiple second cavities 35 are formed around the first cavity 33. The second cavity 35 is connected to the air outlet of the blower 4, and the first cavity 33 is connected to the oil supply pipe 8.

[0031] The outlets of both cavity 1 (33) and cavity 2 (35) are located at the first end face of cylinder 5. The outlet of cavity 2 (35) faces the outlet of cavity 1 (33). If the outlet of cavity 1 (33) is located at the center of the first end face of cylinder 5, and the outlets of cavity 2 (35) are inclined towards the center, then the airflow discharged from cavity 2 (35) will directly impact the oil discharged from cavity 1 (33), causing it to atomize.

[0032] To reduce molding difficulty, the cylinder of the atomizing nozzle 3 in this example is formed by front and rear split molding, such as including a front section 32 and a rear section 31. The rear section 31 and the front section 32 can be fixed by fitting, screw fixing, or adhesive fixing. A cavity 34 is formed in the wall of a portion of the cavity 1 33 within the rear section 31, which connects to the oil supply pipe 8. The outlets of both cavities 1 and 2 are located at the end face of the front section. A pipe 5 for air supply is fixed to the air outlet of the blower 4. The other end of the pipe 5 is fitted and connected to the end of the rear section. The inlet of a portion of the cavity 2 35 within the rear section 31 connects to the cavity of the pipe 5. The airflow blown by the blower 4 flows through the pipe 5 into cavity 2 35 and then exits. In subsequent maintenance, the front or rear section can be replaced selectively, helping to reduce maintenance costs.

[0033] To improve atomization, the diameter of the cavity opening at the head end of the cylinder 5 (cavity 33) gradually decreases axially, such as... Figure 5 As shown, the oil entering cavity 33 is discharged under pressure as the cavity diameter decreases.

[0034] To facilitate the adjustment of oil flow rate, a flow regulating valve 11 can be added to the oil supply pipe 8 behind the solenoid valve 10. For example, in the manual type, the handwheel for manual adjustment protrudes from the top surface of the horizontal part. The handwheel can be rotated to adjust the flow rate of the oil, thereby adjusting the atomization state of the oil spray.

[0035] In addition, a hanging ring 12 can be hinged to the top surface of the rear end of the horizontal part 100, so that the gun body can be suspended through the hanging ring for easy storage.

[0036] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A fuel dispenser, comprising a dispenser body (1) and a trigger assembly (2) disposed on the dispenser body (1), wherein the dispenser body (1) comprises a horizontal portion (100) connected to the dispenser body and a longitudinal portion (101) for gripping, characterized in that, A connecting end (102) is provided on the bottom surface of the horizontal part (100) in front of the longitudinal part (101), and a connecting port for connecting the bottle body is provided at the connecting end (102). An atomizing nozzle (3) is provided at the opening of the first chamber of the horizontal part (100), and an air pump (6), a fan (4) and an oil supply pipe (8) for pressurization are provided in the chamber behind the atomizing nozzle (3). An air supply pipe (9) connected to the air outlet of the air pump (6) extends to the connecting port. One end of the oil pipe (8) is at the connection port and the other end is connected to the atomizing nozzle (3). The oil pipe (8) is equipped with a solenoid valve (10) for controlling the on and off. The air outlet of the blower (4) is connected to the atomizing nozzle (3) through the pipe body (5). The blower (4), air pump (6), solenoid valve (10) are connected to the trigger assembly (2) to control the start and stop through the trigger assembly. The blower (4) causes the oil entering the atomizing nozzle (3) to be sprayed out in a mist.

2. The oil gun as described in claim 1, characterized in that: The atomizing nozzle (3) includes a cylinder, in which a first cavity (33) and a second cavity (35) are provided. The second cavity (35) is arranged around the first cavity (33), and the outlets of the first cavity (33) and the second cavity (35) are both located at the first end face of the cylinder. The outlet of the second cavity (35) is arranged facing the outlet of the first cavity (33). The inlet of the second cavity (35) is connected to the pipe (5), and the first cavity (33) is connected to the oil pipeline (8).

3. The oil gun as described in claim 2, characterized in that: The cylinder includes a front section (32) and a rear section (31) connected to each other. A portion of the cavity one (33) in the rear section (31) is connected to the oil pipeline (8). The pipe body (5) is connected to the rear section (31), and the inlet of a portion of the cavity two (35) in the rear section (31) is connected to the cavity of the pipe body (5).

4. The oil gun as described in claim 2, characterized in that: The cavity 1 (33) located at the head end of the cylinder has a gradually decreasing diameter in the axial direction.

5. The oil gun as described in claim 1, characterized in that: A flow regulating valve (11) is installed on the oil supply pipe (8) behind the solenoid valve (10).

6. The oil gun as described in claim 1, characterized in that: It also includes an oil storage bottle (7), the mouth of which is connected to the connection port, and the ends of the gas pipe (9) and oil pipe (8) at the connection port are inserted into the channel at the mouth of the oil storage bottle (7) to connect them.

7. The oil gun as described in claim 1, characterized in that: The trigger assembly (2) includes a trigger (20) and a control circuit board (21), which is connected to the fan (4), the solenoid valve (10) and the air pump (6).

8. The oil gun as described in claim 1, characterized in that: A hanging ring (12) is hinged to the top surface of the tail end of the horizontal part (100).