Roots blower oil cooling system

Abstract

The utility model discloses a roots blower oil cooling system relates to the technical field of blower, the roots blower oil cooling system includes the blower, and the left and right sides of blower are provided with left oil tank and right oil tank respectively, and its characterized in that: oil tank connecting pipe is arranged between left oil tank and right oil tank, and oil tank connecting pipe intercommunication left oil tank and right oil tank, oil tank connecting pipe is connected with oil pump through first connecting pipeline, and oil pump is connected with motor, the oil pump is connected with cooler through second connecting pipeline, and the cooler is connected to left oil tank and right oil tank respectively through third connecting pipeline, still include cold -blast fan, cold -blast fan with cooling device connection setting, and the air outlet of cold -blast fan is towards cooling device setting.

Description

Technical Field

[0001] This utility model relates to the field of blower technology, specifically to an oil cooling system for a Roots blower. Background Technology

[0002] During long-term continuous operation, the lubricating oil temperature of Roots blowers continuously rises due to factors such as heat generated by mechanical friction and heat conduction from compressed gas. Monitoring shows that the current operating oil temperature often exceeds 85℃, far exceeding the normal operating temperature range. This high temperature causes a decrease in lubricating oil viscosity and weakens lubrication performance, accelerating wear on critical components such as gears and bearings, shortening equipment lifespan, and increasing the risk of sudden failures. Under high-temperature conditions, the gas density inside the blower decreases, and volumetric efficiency declines, resulting in insufficient actual air delivery. Excessively high oil temperature easily causes lubricating oil oxidation and deterioration, producing carbon deposits, sludge, and other impurities that clog oil passages. In severe cases, this can lead to lubrication failure, causing major malfunctions such as bearing seizure and gear damage, and even posing a potential safety risk of fire due to high temperatures. Utility Model Content

[0003] Therefore, this utility model provides an oil cooling system for a Roots blower to solve the problems existing in the prior art.

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

[0005] An oil cooling system for a Roots blower includes a blower, with a left oil tank and a right oil tank respectively located on the left and right sides of the blower. An oil tank connecting pipe is provided between the left and right oil tanks, connecting the left and right oil tanks. The oil tank connecting pipe is connected to an oil pump through a first connecting pipe, and the oil pump is connected to a motor. The oil pump is connected to a cooler through a second connecting pipe, and the cooler is connected to both the left and right oil tanks through a third connecting pipe.

[0006] It also includes a cooling fan, which is connected to the cooler and has its air outlet facing the cooler.

[0007] Optionally, the oil pump is a gear pump or a screw pump.

[0008] Optionally, the cooler is a plate heat exchanger.

[0009] Optionally, the system also includes a control system, which includes a control motherboard, two temperature sensors, and two drain valves. Each of the left and right oil tanks has a drain valve at its bottom. Each of the left and right oil tanks has a temperature sensor installed inside it. The signal output terminal of the temperature sensor is electrically connected to the signal input terminal of the control motherboard, and the signal output terminal of the control motherboard is electrically connected to the signal input terminal of the drain valve.

[0010] Optionally, the oil tank connecting pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are all hydraulic oil pipes.

[0011] Optionally, it also includes two oil level gauges, one in each of the left and right oil tanks, and the oil level gauges are electrically connected to the control main board.

[0012] Optionally, there are two oil tank connecting pipes. One end of each of the two oil tank connecting pipes is connected to a drain valve, and the other end of each of the two oil tank connecting pipes is connected to the two side ports of the first tee pipe. The first connecting pipe is connected to the main port of the first tee pipe.

[0013] Optionally, one end of the third connecting pipe is connected to the cooler, and the other end of the third connecting pipe is connected to the main interface of the second tee pipe. The two side interfaces of the second tee pipe are respectively connected to the left oil tank and the right oil tank through the fourth connecting pipe.

[0014] This utility model has at least the following beneficial effects:

[0015] This invention connects the left and right oil tanks of the blower via an oil tank connecting pipe, and the oil is pumped out and transported to the cooler for cooling. At the same time, a cooling fan is used to further cool the oil. After cooling, the lubricating oil is then transported to the left and right oil tanks respectively, thereby ensuring that the oil temperature is within a suitable range. This prevents the lubricating oil from oxidizing and deteriorating due to high temperature, which can lead to carbon deposits, sludge and other impurities clogging the oil passages. It can also prevent major failures such as bearing seizure and gear damage caused by lubrication failure. Attached Figure Description

[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the principle structure of one embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For solutions with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for solutions with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0021] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0022] like Figure 1 As shown, this utility model discloses an oil cooling system for a Roots blower, including a blower. A left oil tank and a right oil tank are respectively located on the left and right sides of the blower. An oil tank connecting pipe connects the left and right oil tanks. The oil tank connecting pipe is connected to an oil pump via a first connecting pipe. The oil pump is connected to a motor, specifically by connecting the output shaft of the motor to the input shaft of the oil pump (directly or indirectly, for example, via a coupling; specific connections are existing technology and will not be elaborated here). The oil pump is connected to a cooler via a second connecting pipe, and the cooler is connected to both the left and right oil tanks via a third connecting pipe.

[0023] It also includes a cooling fan, which is connected to the cooler and has its air outlet facing the cooler.

[0024] The blower described above adopts the same main structure as the existing Roots blower, and connects the oil tanks on the left and right sides. That is, an oil tank connecting pipe is set between the left and right oil tanks, and then a first connecting pipe is connected to the oil tank connecting pipe, which is connected to an oil pump. The oil pump draws out the high-temperature lubricating oil from the left and right oil tanks, and then delivers it to the cooler for cooling through the second connecting pipe. At the same time, a cooling fan is installed on the outer shell of the cooler to cool the lubricating oil entering it. The cooled lubricating oil is delivered to the left and right oil tanks respectively through a third connecting pipe, ensuring that the lubricating oil temperature in the oil tanks is kept within a suitable range.

[0025] In one specific embodiment, the oil pump is a gear pump or a screw pump.

[0026] Specifically, based on parameters such as the power, speed, operating pressure, and lubricating oil flow requirements of the Roots blower, an appropriate oil pump should be selected. Gear pumps or screw pumps with stable performance, wide flow and pressure adjustment ranges, and low noise should be preferred. For example, a Roots blower with a power of 132kW and an operating pressure of 45kPa requires a lubricating oil flow rate of 40L / min. A gear pump with a rated flow rate of 40L / min and a rated pressure of 0.6MPa can be selected to ensure sufficient oil pressure and flow for the oil cooling system under different operating conditions.

[0027] In one specific embodiment, the cooler is a plate heat exchanger.

[0028] Plate heat exchangers exchange heat between air and fluids (such as oil, water, or other media). Their core consists of multiple corrugated plates. This application can use commercially available plate heat exchangers for installation. The high-temperature medium inlet is connected to the first connecting pipe, and its outlet is connected to the third connecting pipe. The cooling medium setting of the plate heat exchanger itself is existing technology and will not be described in detail here.

[0029] In another embodiment, a control system is also included, which includes a control motherboard, two temperature sensors, and two drain valves. A drain valve is provided at the bottom of each of the left and right oil tanks. A temperature sensor is provided in each of the left and right oil tanks. The signal output terminal of the temperature sensor is electrically connected to the signal input terminal of the control motherboard, and the signal output terminal of the control motherboard is electrically connected to the signal input terminal of the drain valve.

[0030] The aforementioned control system detects the oil temperature in the tank using a temperature sensor. When the temperature reaches a preset high temperature, the control board receives the signal from the temperature sensor and then sends a control signal to control the oil pump and motor to work. The oil in the tank is drawn out through the tank connecting pipe and the first connecting pipe and then transported to the cooler for cooling. When the temperature is lower than the preset value, the control motor and oil pump stop working.

[0031] The aforementioned drain valve adopts a solenoid valve structure and is electrically connected to the control system. When it is necessary to cool down the lubricating oil in the oil tank, the control system receives a signal from the temperature sensor and simultaneously controls the drain valve to open.

[0032] In a further embodiment, the oil tank connecting pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are all hydraulic oil pipes.

[0033] The above-mentioned pipelines are equipped with hydraulic oil pipes, and stainless steel connectors are used between each hydraulic oil pipe and between each piece of equipment.

[0034] In some other embodiments, two oil level gauges are also included, one in each of the left and right oil tanks, and the oil level gauges are electrically connected to the control main board.

[0035] By installing an oil level gauge, the oil level in the oil tank can be monitored in real time to ensure that the amount of lubricating oil is within the normal range;

[0036] In addition, the oil level in the tank can be observed through an oil sight glass. However, the existing oil sight glass is located on the front of the tank (where the operator stands beside the tank), which makes it inconvenient to observe, especially after being covered by the soundproof cover of the blower. To facilitate observation, one end of the T-connector is connected to the original position of the oil sight glass, and one of the other two ports of the T-connector is connected to the new oil sight glass, bringing the oil sight glass to the side for easy observation. The other port of the T-connector is connected to a third connecting pipe to receive the cooled lubricating oil.

[0037] The oil tank connecting pipe is provided in two parts. One end of the two oil tank connecting pipes is connected to two oil drain valves respectively, and the other end of the two oil tank connecting pipes is connected to the two side ports of the first tee pipe. The first connecting pipe is connected to the main port of the first tee pipe.

[0038] Two oil tank connecting pipes are provided, and then the first connecting pipe is connected through a tee pipe to mix the oil in the two oil tanks and then cool it down.

[0039] One end of the third connecting pipe is connected to the cooler, and the other end of the third connecting pipe is connected to the main interface of the second tee pipe. The two side interfaces of the second tee pipe are respectively connected to the left oil tank and the right oil tank through the fourth connecting pipe.

[0040] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0041] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0042] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A Roots blower oil cooling system, comprising a blower, wherein a left oil tank and a right oil tank are respectively provided on the left and right sides of the blower, characterized in that: An oil tank connecting pipe is provided between the left oil tank and the right oil tank, the oil tank connecting pipe connects the left oil tank and the right oil tank, the oil tank connecting pipe is connected to an oil pump through a first connecting pipe, the oil pump is connected to a motor, the oil pump is connected to a cooler through a second connecting pipe, and the cooler is connected to the left oil tank and the right oil tank through a third connecting pipe respectively. It also includes a cooling fan, which is connected to the cooler and has its air outlet facing the cooler.

2. The Roots blower oil cooling system according to claim 1, characterized in that: The oil pump is a gear pump or a screw pump.

3. The Roots blower oil cooling system according to claim 1, characterized in that: The cooler is a plate heat exchanger.

4. The Roots blower oil cooling system according to claim 1, characterized in that: It also includes a control system, which includes a control motherboard, two temperature sensors and two drain valves. Each of the left and right oil tanks has a drain valve at its bottom. Each of the left and right oil tanks has a temperature sensor. The signal output terminal of the temperature sensor is electrically connected to the signal input terminal of the control motherboard, and the signal output terminal of the control motherboard is electrically connected to the signal input terminal of the drain valve.

5. The Roots blower oil cooling system according to claim 1, characterized in that: The oil tank connecting pipe, the first connecting pipe, the second connecting pipe and the third connecting pipe are all hydraulic oil pipes.

6. The Roots blower oil cooling system according to claim 4, characterized in that: It also includes two oil level gauges, one in each of the left and right oil tanks, and the oil level gauges are electrically connected to the control main board.

7. The Roots blower oil cooling system according to claim 1, characterized in that: The oil tank connecting pipe is provided in two parts. One end of the two oil tank connecting pipes is connected to two oil drain valves respectively, and the other end of the two oil tank connecting pipes is connected to the two side ports of the first tee pipe. The first connecting pipe is connected to the main port of the first tee pipe.

8. The Roots blower oil cooling system according to claim 1, characterized in that: One end of the third connecting pipe is connected to the cooler, and the other end of the third connecting pipe is connected to the main interface of the second tee pipe. The two side interfaces of the second tee pipe are respectively connected to the left oil tank and the right oil tank through the fourth connecting pipe.

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