Automatic oil injection system for chain

Abstract

The utility model discloses an automatic oiling system for a chain. The automatic oiling system comprises an inductive sensor, an oiling nozzle, an electromagnetic control valve, a lubricating oil tank and a PLC (Programmable Logic Controller) control system, the inductive sensor and the oil injection nozzle are arranged right above the chain; the oil injection nozzle is communicated with the lubricating oil tank through an oil injection pipe, and an electromagnetic control valve is arranged on the oil injection nozzle; the PLC control system is connected with the inductive sensor and the electromagnetic control valve and used for receiving electric signals of the inductive sensor and controlling the electromagnetic control valve to be opened or closed according to the electric signals. Lubricating oil is stored in the lubricating oil tank. The oil injection nozzle and the inductive sensor are combined and controlled by the PLC control system, and fixed-point oil supplementation of the chain and the chain wheel is achieved. And the PLC control system is programmed and designed, so that the oil supplementing speed and time can be adjusted.

Description

Technical Field

[0001] The utility model relates to the field of mechanical structures, in particular to an automatic chain oiling system suitable for sprockets and chain buckles of suspended conveyor chains, and fixed-point oiling of various types of conveyor chains or transmission chains. Background Art

[0002] Chains are a common transmission device that wears easily during operation, necessitating lubrication. The current method is to manually refill the lubricant during maintenance. However, due to varying operating conditions, unit loads, and speeds, the chain rotates at varying speeds for the same operating time. Therefore, regular lubrication based on operating time is not a reasonable approach. Chains may fail to receive lubrication when they should, leading to severe wear and a shortened service life. Summary of the Invention

[0003] The present invention addresses the shortcomings of the prior art by proposing an improved or alternative solution, specifically an automatic lubricating oil replenishment system capable of adjusting the replenishment amount and refill interval according to different operating conditions. This system enables chain lubrication during operation, eliminating the traditional manual lubrication process. This significantly improves labor efficiency, reduces labor intensity, and ensures worker safety.

[0004] In order to solve the above problems, the solution adopted by the utility model is as follows: a chain automatic oiling system, characterized in that it includes an inductive sensor, an oiling nozzle, an electromagnetic control valve, a lubricating oil tank and a PLC control system; the inductive sensor and the oiling nozzle are arranged directly above the chain and above the chain roller; the oiling nozzle is connected to the lubricating oil tank through an oiling pipe, and an electromagnetic control valve is provided on the oiling nozzle; the PLC control system is connected to the inductive sensor and the electromagnetic control valve, and is used to receive the electrical signal of the inductive sensor, and control the electromagnetic control valve to open or close according to the electrical signal; the lubricating oil tank stores lubricating oil.

[0005] Furthermore, the automatic chain oiling system is characterized in that the inductive sensor and the oiling nozzle are fixedly arranged on the mounting plate, and the distance between the inductive sensor and the oiling nozzle is a multiple of the chain pitch.

[0006] Furthermore, the automatic chain oiling system is characterized in that a pressure regulating valve is connected to the lubricating oil tank, which is connected to the compressed air source and is used to fill compressed gas into the lubricating oil tank; the lubricating oil tank is provided with an oil tank filling port and a sealing cover for replenishing lubricating oil into the lubricating oil tank.

[0007] Furthermore, the automatic chain oiling system is characterized in that an oil collecting hopper is provided directly below the oiling nozzle, and an oil storage tank is connected below the oil collecting hopper to collect and store dripping lubricating oil.

[0008] Furthermore, the automatic chain oiling system is characterized in that a pressure sensor is provided in the lubricating oil tank, and the pressure sensor is connected to the PLC control system; the pressure regulating valve is connected to the PLC control system and is controlled and regulated by the PLC control system.

[0009] The technical effects of the utility model are as follows: the chain automatic oiling system of the present application is applicable to the sprockets and chain buckles of the suspension conveyor line chain, as well as various types of conveyor chains or transmission chains (fixed-point oiling of liquid lubricating grease).

[0010] The oiling nozzle is combined with an inductive sensor and controlled by a PLC control system to achieve fixed-point oiling of the chain sprocket. The distance between the inductive sensor and the oiling nozzle is a multiple of the chain pitch (n*p), thus avoiding the situation of empty oiling.

[0011] Programming the PLC control system also allows for adjustment of the oil filling speed and timing. The timed oil filling process involves setting the oil filling time in the PLC control system. The oil filling system will then implement the scheduled oil filling according to the set time. This means the solenoid control valve will open at the set time, thus achieving timed oil filling. This timed oil filling is set appropriately based on the chain's operating speed, thus preventing the possibility of empty oil filling.

[0012] The lubricating oil tank is a sealed reservoir. Injecting compressed air into the tank primarily forces the oil from the tank into the oiling nozzle, where it reaches the chain rollers. Rather than relying on the oil's own gravity, pressurization allows for adjustable oil volume. The amount of oil injected is also controlled by adjusting the pressure regulating valve in the compressed air line. When more oil is needed, the pressure is increased; when less oil is needed, the pressure is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the chain automatic oiling system structure.

[0014] Figure 2 This is a schematic diagram of the installation of the inductive sensor and the oiling nozzle.

[0015] Figure 3 Schematic diagram of the lubricating oil tank structure.

[0016] Among them, 1 is the chain, 2 is the induction sensor, 3 is the oil filling nozzle, 4 is the electromagnetic control valve, 5 is the oil filling pipe, 6 is the lubricating oil tank, 7 is the pressure regulating valve, 8 is the PLC control system, and 9 is the mounting plate. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below with reference to the accompanying drawings.

[0018] Example: Figures 1 to 3 As shown, a chain automatic oiling system includes an inductive sensor, an oiling nozzle, an electromagnetic control valve, a lubricating oil tank and a PLC control system; the inductive sensor and the oiling nozzle are arranged directly above the chain; the oiling nozzle is connected to the lubricating oil tank through an oiling pipe, and an electromagnetic control valve is provided on the oiling nozzle; the PLC control system is connected to the inductive sensor and the electromagnetic control valve, and is used to receive an electrical signal from the inductive sensor and control the electromagnetic control valve to open or close according to the electrical signal; the lubricating oil tank stores lubricating oil.

[0019] The inductive sensor and grease nozzle are fixed to the mounting plate, with the spacing between them being the same as the chain pitch. A pressure regulating valve is connected to the lubricating oil tank, connected to a compressed air source for injecting compressed air into the tank. The tank is equipped with a filler port and a sealing cap for replenishing lubricating oil. A pressure sensor is installed within the tank, connected to a PLC control system. The pressure regulating valve is also connected to and regulated by the PLC control system.

[0020] The oiling process is as follows: When the inductive sensor detects the chain rollers, a signal is transmitted to the PLC control system. The PLC transmits the signal to the solenoid control valve, which opens. At this time, lubricating oil is injected through the oil nozzle onto the chain rollers. This completes one oiling operation. As the chain continues to move forward, the oiling system repeats the oiling action, thus achieving chain oiling.

Claims

1. A chain automatic oiling system, characterized in that: It includes an inductive sensor, an oiling nozzle, an electromagnetic control valve, a lubricating oil tank and a PLC control system; the inductive sensor and the oiling nozzle are arranged directly above the chain; the oiling nozzle is connected to the lubricating oil tank through an oiling pipe, and an electromagnetic control valve is provided on the oiling nozzle; the PLC control system is connected to the inductive sensor and the electromagnetic control valve, and is used to receive the electrical signal of the inductive sensor and control the electromagnetic control valve to open or close according to the electrical signal; the lubricating oil tank stores lubricating oil.

2. The automatic chain oiling system according to claim 1, characterized in that: The inductive sensor and the oiling nozzle are fixedly arranged on the mounting plate, and the distance between the inductive sensor and the oiling nozzle is a multiple of the chain pitch.

3. The automatic chain oiling system according to claim 1, characterized in that: The lubricating oil tank is connected to a pressure regulating valve, which is connected to a compressed air source and is used to fill the lubricating oil tank with compressed gas; the lubricating oil tank is provided with a tank filling port and a sealing cover, which are used to add lubricating oil to the lubricating oil tank.

4. The automatic chain oiling system according to claim 1, characterized in that: An oil collecting hopper is provided just below the oil filling nozzle, and an oil storage tank is connected below the oil collecting hopper for collecting and storing dripping lubricating oil.

5. The automatic chain oiling system according to claim 3, characterized in that: A pressure sensor is provided in the lubricating oil tank, and the pressure sensor is connected to the PLC control system; the pressure regulating valve is connected to the PLC control system and is controlled and regulated by the PLC control system.

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