External oil cooler for reduction gearbox of polyester device equipment

Abstract

The utility model discloses an external oil cooler for a reduction gearbox of polyester equipment, which comprises an oil suction hose and an oil supply hose which are communicated with a lubricating oil cavity of the reduction gearbox of the polyester equipment, and an oil pump, a double-cylinder filter and an oil cooler which are sequentially arranged between the oil suction hose and the oil supply hose in series, the oil pump sucks out lubricating oil to be cooled from the reduction box of the polyester device equipment through the oil suction hose, impurities of the lubricating oil are removed through the double-cylinder filter, then the lubricating oil enters the oil cooler to be cooled, and the cooled lubricating oil flows back into the reduction box of the polyester device equipment through the oil supply hose. The problem that the oil temperature cooling effect is reduced or does not exist due to the fact that an existing cooling water coil pipe is blocked by cooling water can be solved, online filtering and cooling of lubricating oil are achieved, and the cooling effect of the lubricating oil is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of polyester chemical production, in particular to an external oil cooler for a reduction box of a polyester device. Background Art

[0002] The polyester key reducer is a key equipment that relies on the motor to drive the gear pump. The reducer is one of the key equipment in the polyester equipment and an important link in the polyester device's aorta. Its quality directly affects the stability of production. Its operation quality directly affects the stability of production. Therefore, it becomes extremely important to interlock the temperature control of the lubricating oil in the reducer of the key equipment.

[0003] Currently, most gearbox lubricating oil cooling systems still use cooling water coils for room-temperature cooling. However, after long periods of operation, the cooling effect of the gearbox coils deteriorates, and using exhaust fans for cooling increases the risk of unsafe operation of the device. Furthermore, operating the gearbox at high temperatures for a long time can accelerate the aging of rubber seals, shorten the service life of bearings, and affect the stable operation of the polyester device. Existing cooling water coil lubricating oil cooling systems have significant design flaws. Once the lubricating oil is not cooled in time over time, the oil temperature will become too high, exacerbating changes in the quality of the lubricating oil in the gearbox and causing the lubricating oil to deteriorate. This will put a strain on the gears in the gearbox, thereby affecting the equipment's performance and posing a significant production risk. In polymerization devices in particular, the design flaws of existing cooling water coil cooling systems make them unable to meet the requirements for long-term stable operation of the device. Summary of the Invention

[0004] In order to solve certain technical problems existing in the prior art, the purpose of this application is to provide an external oil cooler for the reducer of a polyester device, which can solve the problem that the oil temperature cooling effect is reduced or lost due to the blockage of cooling water in the existing cooling water coil, realize online filtration and cooling of lubricating oil, and stabilize the cooling effect of lubricating oil.

[0005] To solve the above existing technical problems, this application adopts the following technical solutions:

[0006] An external oil cooler for a polyester device gearbox comprises an oil suction hose and an oil supply hose connected to a lubricating oil cavity of the polyester device gearbox, an oil pump, a duplex filter and an oil cooler sequentially connected in series between the oil suction hose and the oil supply hose. The oil pump sucks the lubricating oil to be cooled from the polyester device gearbox through the oil suction hose, removes impurities in the lubricating oil through the duplex filter, and then enters the oil cooler for cooling. The cooled lubricating oil then flows back to the polyester device gearbox through the oil supply hose.

[0007] Preferably, the oil suction hose and / or the oil supply hose is provided with a temperature interlock switch and a temperature gauge linked to the oil pump, and the oil pump is started and stopped by the temperature interlock switch.

[0008] Preferably, the starting temperature of the temperature interlock switch is 55-60°C, and the stopping temperature is set to 4-10°C.

[0009] Preferably, the oil cooler is provided with a flow switch.

[0010] Preferably, a self-operated temperature control valve is further provided on one side of the oil cooler, and the inlet and outlet of the self-operated temperature control valve are respectively connected to the inlet and outlet of the oil cooler through pipelines.

[0011] Preferably, the oil cooler is further provided with a pressure switch and a shockproof pressure gauge, and the set pressures of the two pressure switches are 0.5 Bar and 0.8 Bar respectively.

[0012] Preferably, a valve is provided between the oil suction hose and the oil pump, and the flow of the oil suction hose is controlled by the valve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] To address the issue of poor lubricating oil cooling in the gearbox of the polyester plant, an external oil cooler was installed on the existing gearbox to cool the high-temperature lubricating oil externally. During the cooling process, the lubricating oil is filtered through a duplex filter to remove impurities before being cooled inside the oil cooler. This effectively reduces the temperature of the high-temperature lubricating oil. When the oil temperature reaches a stable state, the lubricating oil flows back from the oil supply hose to the gearbox. This has transformed the existing cooling water coil oil cooling method into a more intelligent oil cooling method. This eliminates the problem of reduced or no oil cooling effect due to cooling water blockage, and allows for real-time monitoring of the oil cooling effect to achieve an optimal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] In the figure: 1. Valve; 2. Oil suction hose; 3. Self-operated temperature control valve; 4. Oil supply hose; 5. Flow switch; 6. Pressure switch; 7. Shockproof pressure gauge; 8. Temperature gauge; 9. Temperature interlock switch; 10. Oil cooler; 11. Duplex filter; 12. Oil pump. DETAILED DESCRIPTION

[0017] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0018] In the description of this application, it should be understood that the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0019] The terms "first," "second," and the like in this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0020] like Figure 1 As shown, an external oil cooler for a polyester device gearbox includes an oil suction hose 2 and an oil supply hose 4 connected to the lubricating oil cavity of the polyester device gearbox, an oil pump 12, a duplex filter 11 and an oil cooler 10 sequentially connected in series between the oil suction hose 2 and the oil supply hose 4. The oil pump 12 sucks the lubricating oil to be cooled out of the polyester device gearbox through the oil suction hose 2, and then passes through the duplex filter 11 to remove impurities in the lubricating oil before entering the oil cooler 10 for cooling. The cooled lubricating oil then flows back to the polyester device gearbox through the oil supply hose 4.

[0021] In order to solve the problem of poor cooling of lubricating oil in the gearbox of polyester equipment, an external oil cooler 10 is installed outside the existing gearbox of polyester equipment. When cooling the lubricating oil, the oil pump 12 is turned on to allow the oil suction hose 2 to pump the lubricating oil from the gearbox of polyester equipment. The lubricating oil is then filtered through the double-tube filter 11 installed after the oil pump 12 to remove impurities. Finally, the lubricating oil is air-cooled inside the oil cooler 10, thereby effectively cooling the high-temperature lubricating oil. When the oil temperature reaches a stable oil temperature state, the lubricating oil will flow back from the oil supply hose 4 to the gearbox. This structure transforms the original cooling water coil cooling method of the oil temperature into a more intelligent oil temperature cooling method. The situation where the oil temperature cooling effect is reduced or eliminated when the cooling water is blocked will no longer occur. The oil temperature cooling effect can be detected in real time to achieve a good state.

[0022] As a further improvement, the oil suction hose 2 and / or the oil supply hose 4 are provided with a temperature interlock switch 9 and a temperature gauge 8 linked to the oil pump 12 , and the oil pump 12 is started and stopped by the temperature interlock switch 9 .

[0023] Since the lubricating oil temperature in the gearbox of key equipment is not always high, and the operator cannot always monitor the temperature gauge 8 to turn it on at any time, it is expensive to keep the oil pump 12 on for a long time. In many cases, external cooling is not required, which increases costs and operating noise. Turning it on when the oil temperature is too high can damage the gearbox. Therefore, a temperature interlock switch 9 and a temperature gauge 8 are installed on the oil suction hose 2 and / or the oil supply hose 4 connected to the gearbox. When the lubricating oil temperature in the gearbox rises, it can be monitored in real time by the temperature gauge 8. When the temperature reaches the set value, the temperature interlock switch 9 is activated, thereby starting the oil pump 12 to pump oil for cooling. When the oil temperature is detected to be below the appropriate temperature, the temperature interlock switch 9 is closed. The temperature interlock switch 9 and the temperature gauge 8 linked to the oil pump 12 achieve the entire interlock control, which can effectively avoid the problem of excessive oil temperature not being detected in time, and also avoid the problem of the oil pump 12 being in operation for a long time. In particular, when the oil suction hose 2 and the oil supply hose 4 are both installed with a temperature interlock switch 9 and a temperature meter 8 linked to the oil pump 12, the control accuracy is higher.

[0024] A further improvement is that the starting temperature of the temperature interlock switch 9 is set to 55-60°C, and the stopping temperature is set to 4-10°C.

[0025] Since the lubricating oil temperature of the gearbox of key equipment is required to be controlled below 60 degrees, and the temperature gauge 8 is a certain distance away from the gearbox itself, in order to avoid the temperature difference between the lubricating oil temperature in the gearbox and the temperature of the detection area, the starting temperature of the temperature interlock switch 9 is generally around 57°, slightly lower than the actual required temperature, and its stop temperature is generally set at around 5°C. After a start-stop cooling process, the gearbox can achieve effective and stable operation.

[0026] A further improvement is that the oil cooler 10 is provided with a flow switch 5 .

[0027] A flow switch 5 is designed on the oil cooler 10, which can realize the interlocking state of automatically opening the high and low reporting interlock of the oil volume, so that the cooling efficiency is guaranteed and the problem of not being able to cool quickly and timely due to excessive flow is avoided.

[0028] As a further improvement, a self-operated temperature control valve 3 is further provided on one side of the oil cooler 10 , and the inlet and outlet of the self-operated temperature control valve 3 are respectively connected to the inlet and outlet of the oil cooler 10 through pipelines.

[0029] When the flow switch 5 on the oil cooler 10 is adjusted to a level less than the oil supply, a self-operated temperature control valve 3 is installed on one side of the oil cooler 10 to ensure that the excess oil can be circulated. When the pressure on the pressure gauge is too high, it means that the oil has not been fully circulated back in time. At this time, the self-operated temperature control valve 3 is triggered to start, allowing the excess oil to circulate directly through the bypass pipe.

[0030] As a further improvement, the oil cooler 10 is further provided with a pressure switch 6 and a shockproof pressure gauge 7, and the set pressures of the two pressure switches 6 are 0.5 Bar and 0.8 Bar respectively.

[0031] In order to prevent abnormal oil pressure caused by excessively low or high oil pressure, a pressure switch 6 is installed on the oil cooler 10, with a minimum of 0.5 Bar and a maximum of 0.8 Bar, to control the normal range of oil pressure. When the duplex filter 11 is clogged and the flow rate is less than 0.5 Bar, the shockproof pressure gauge 7 detects that the oil pressure reaches 0.5 Bar, indicating that the duplex filter 11 is clogged, and an alarm is issued to facilitate timely maintenance by the staff. When the shockproof pressure gauge 7 detects that the pressure reaches 0.8 Bar, it means that the oil intake of the oil cooler 10 is greater than the oil output. At this time, the pressure switch 6 is activated, and when it opens, it controls the automatic opening of the self-operated temperature control valve 3, thereby ensuring stable oil delivery.

[0032] A self-operated temperature control valve 3 is installed next to the oil cooler 10 and is linked to one of the pressure switches 6. The self-operated temperature control valve 3 automatically starts to perform an oil temperature cooling cycle, which can effectively control the oil temperature. The oil temperature and oil pressure are monitored in real time by the thermometers 8 and the shockproof pressure gauge 7, and the temperature interlock switch 9 and the pressure switch 6 are automatically interlocked and adjusted. After the improvement, an automatically interlocked oil temperature cooling circulation system is formed. This combination effectively cools the oil temperature and safely controls the oil pressure stability.

[0033] A further improvement is that a valve 1 is provided between the oil suction hose 2 and the oil pump 12 , and the flow of the oil suction hose 2 is controlled by the valve 1 .

[0034] A valve 1 is added between the oil suction hose 2 and the oil pump 12 to control the initial flow rate and avoid overloading of the oil pump 12 due to excessive oil suction.

[0035] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.

Claims

1. An external oil cooler for a reduction gearbox of a polyester device, characterized by: The invention comprises an oil suction hose (2) and an oil supply hose (4) connected to the lubricating oil cavity of the reduction box of the polyester device, an oil pump (12), a double-barrel filter (11) and an oil cooler (10) which are sequentially arranged in series between the oil suction hose (2) and the oil supply hose (4). The oil pump (12) sucks the lubricating oil to be cooled from the reduction box of the polyester device through the oil suction hose (2), removes impurities in the lubricating oil through the double-barrel filter (11), and then enters the oil cooler (10) for cooling. The cooled lubricating oil then flows back to the reduction box of the polyester device through the oil supply hose (4).

2. The external oil cooler for the reduction gearbox of a polyester device according to claim 1, characterized in that: The oil suction hose (2) and / or the oil supply hose (4) are provided with a temperature interlock switch (9) and a temperature gauge (8) linked to the oil pump (12), and the oil pump (12) is controlled to start and stop by the temperature interlock switch (9).

3. The external oil cooler for the reduction gearbox of a polyester device according to claim 2, characterized in that: The starting temperature of the temperature interlock switch (9) is 55-60°C, and the stopping temperature is set to 4-10°C.

4. The external oil cooler for the reduction gearbox of a polyester device according to any one of claims 1 to 3, characterized in that: The oil cooler (10) is provided with a flow switch (5).

5. The external oil cooler for the reduction gearbox of a polyester device according to claim 4, characterized in that: A self-operated temperature control valve (3) is further provided on one side of the oil cooler (10), and the inlet and outlet of the self-operated temperature control valve (3) are respectively connected to the inlet and outlet of the oil cooler (10) through pipelines.

6. The external oil cooler for the reduction gearbox of a polyester device according to claim 5, characterized in that: The oil cooler (10) is also provided with a pressure switch (6) and a shockproof pressure gauge (7), and the set pressures of the two pressure switches (6) are 0.5 Bar and 0.8 Bar respectively.

7. The external oil cooler for the reduction gearbox of a polyester device according to claim 1, characterized in that: A valve (1) is provided between the oil suction hose (2) and the oil pump (12), and the flow rate of the oil suction hose (2) is controlled by the valve (1).

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