CN108317081A - The oil return system of air compressor machine - Google Patents
The oil return system of air compressor machine Download PDFInfo
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- CN108317081A CN108317081A CN201810308221.3A CN201810308221A CN108317081A CN 108317081 A CN108317081 A CN 108317081A CN 201810308221 A CN201810308221 A CN 201810308221A CN 108317081 A CN108317081 A CN 108317081A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/021—Control systems for the circulation of the lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
本发明公开了一种空压机的回油系统，包括依次连接的机头、油分离器、油冷却器，所述油冷却器和机头之间连接有第一回油管路和第二回油管路；当所述空压机开机时，所述第一回油管路接通；当所述空压机停机时，所述第一回油管路断开；当所述机头的温度大于第一设定值时，所述第二回油管路接通；当所述机头的温度小于第二设定值时，所述第二回油管路断开。采用本发明的空压机的回油系统，能够根据机头的温度调节机头的供油量，能够满足空压机能效高、可靠性高和成本低的要求。
The invention discloses an oil return system of an air compressor, which comprises a machine head, an oil separator, and an oil cooler connected in sequence. A first oil return pipeline and a second oil return pipeline are connected between the oil cooler and the machine head. Oil pipeline; when the air compressor starts, the first oil return pipeline is connected; when the air compressor stops, the first oil return pipeline is disconnected; when the temperature of the machine head is higher than the first When a set value is reached, the second oil return pipeline is connected; when the temperature of the machine head is lower than the second set value, the second oil return pipeline is disconnected. By adopting the oil return system of the air compressor of the present invention, the oil supply quantity of the machine head can be adjusted according to the temperature of the machine head, and the requirements of high energy efficiency, high reliability and low cost of the air compressor can be met.
Description
技术领域technical field
本发明涉空压机领域，具体而言，涉及一种空压机的回油系统。The invention relates to the field of air compressors, in particular to an oil return system of an air compressor.
背景技术Background technique
空压机是一种用以压缩气体的设备，是工矿企业中最为常见的动力设备，可分为往复式、螺杆式和大型离心式，其中螺杆压缩机的应用非常广泛。Air compressor is a kind of equipment used to compress gas. It is the most common power equipment in industrial and mining enterprises. It can be divided into reciprocating type, screw type and large centrifugal type. Among them, screw compressor is widely used.
目前，螺杆压缩机需要满足三个要求：能效高、可靠性高(要求机头温度小于95度)、成本低(机组占地面积要尽可能小)。为了满足能效高的要求，可通过控制系统阻力、减少机组喷油量来实现；为了满足可靠性高，可通过增加喷油量或使用大型冷却器，但增加喷油量会降低机组能效，使用大型冷却器会增加机组尺寸，成本也会相应地增加。因此，现有的空压机回油系统无法同时满足上述三个要求，现有的空压机还是采用减少喷油量和减小冷却器的尺寸，以满足能效高、成本低的要求，但是无法满足机组在高温环境下，将机头温度控制在95度以下的要求，机头温度过高，会导致润滑油寿命减短，压缩空气含油量高、轴承容易损坏等一系列问题。At present, screw compressors need to meet three requirements: high energy efficiency, high reliability (the temperature of the machine head is required to be less than 95 degrees), and low cost (the footprint of the unit should be as small as possible). In order to meet the requirements of high energy efficiency, it can be realized by controlling the resistance of the system and reducing the fuel injection volume of the unit; in order to meet high reliability, it can be achieved by increasing the fuel injection volume or using a large cooler, but increasing the fuel injection volume will reduce the energy efficiency of the unit. Use Larger coolers increase unit size and cost accordingly. Therefore, the existing air compressor oil return system cannot meet the above three requirements at the same time. The existing air compressor still adopts the reduction of oil injection volume and the size of the cooler to meet the requirements of high energy efficiency and low cost, but It cannot meet the requirements of the unit to control the temperature of the machine head below 95 degrees in a high-temperature environment. If the temperature of the machine head is too high, it will lead to a series of problems such as shortening the life of the lubricating oil, high oil content in the compressed air, and easy damage to the bearings.
针对现有技术中所存在的上述问题，提供一种新的空压机的回油系统具有重要意义。In view of the above-mentioned problems existing in the prior art, it is of great significance to provide a new oil return system for an air compressor.
发明内容Contents of the invention
为解决上述问题，本发明提供一种空压机的回油系统，其能够根据机头的温度调节机头的供油量，能够满足空压机能效高、可靠性高和成本低的要求。In order to solve the above problems, the present invention provides an oil return system of an air compressor, which can adjust the oil supply of the air compressor according to the temperature of the air compressor, and can meet the requirements of high energy efficiency, high reliability and low cost of the air compressor.
为实现上述目的，本发明的空压机的回油系统，包括依次连接的机头、油分离器、油冷却器，所述油冷却器和机头之间连接有第一回油管路和第二回油管路；In order to achieve the above object, the oil return system of the air compressor of the present invention includes a machine head, an oil separator, and an oil cooler connected in sequence, and a first oil return pipeline and a second oil return line are connected between the oil cooler and the machine head. Secondary oil return pipeline;
当所述空压机开机时，所述第一回油管路接通；当所述空压机停机时，所述第一回油管路断开；When the air compressor is turned on, the first oil return line is connected; when the air compressor is stopped, the first oil return line is disconnected;
当所述机头的温度大于第一设定值时，所述第二回油管路接通；当所述机头的温度小于第二设定值时，所述第二回油管路断开。When the temperature of the engine head is greater than the first set value, the second oil return pipeline is connected; when the temperature of the machine head is lower than the second set value, the second oil return pipeline is disconnected.
优选地，所述第一回油管路上设有用于控制所述第一回油管路通断的断油阀。Preferably, the first oil return line is provided with an oil cut-off valve for controlling the opening and closing of the first oil return line.
进一步地，所述断油阀为机械式断油阀。Further, the oil cut-off valve is a mechanical oil cut-off valve.
优选地，所述第二回油管路上设有用于控制所述第二回油管路通断的控制阀，所述机头上设有用于检测所述机头的温度的温度传感器，所述控制阀和温度传感器之间连接有控制器，所述控制器能够根据所述温度传感器输出的温度信号来控制所述控制阀的开闭。Preferably, the second oil return pipeline is provided with a control valve for controlling the on-off of the second oil return pipeline, and the machine head is provided with a temperature sensor for detecting the temperature of the machine head, and the control valve A controller is connected between the temperature sensor and the controller, and the controller can control the opening and closing of the control valve according to the temperature signal output by the temperature sensor.
进一步地，所述控制阀为电动控制阀或气动控制阀。Further, the control valve is an electric control valve or a pneumatic control valve.
优选地，所述油分离器和油冷却器之间设有温控阀，所述温控阀具有一个进油口和两个出油口，所述温控阀的进油口与所述油分离器的出油口连接，所述温控阀的一个出油口与所述油冷却器的进油口连接，另一个出油口与所述机头连接。Preferably, a temperature control valve is provided between the oil separator and the oil cooler, the temperature control valve has an oil inlet and two oil outlets, the oil inlet of the temperature control valve is connected to the oil The oil outlet of the separator is connected, one oil outlet of the temperature control valve is connected with the oil inlet of the oil cooler, and the other oil outlet is connected with the machine head.
优选地，所述油冷却器和机头之间设有油过滤器。Preferably, an oil filter is provided between the oil cooler and the machine head.
优选地，所述空压机为螺杆压缩机。Preferably, the air compressor is a screw compressor.
与现有技术相比，本发明的空压机的回油系统的有益效果在于：Compared with the prior art, the beneficial effects of the oil return system of the air compressor of the present invention are:
1、通过增加第二回油管路和控制阀，使得空压机可以根据机头的温度来随时调节机头的供油量，以避免机头温度过高，并同时满足能效高、可靠性高和成本低的要求；1. By adding the second oil return pipeline and control valve, the air compressor can adjust the oil supply of the head at any time according to the temperature of the head, so as to avoid the temperature of the head being too high, and at the same time meet the requirements of high energy efficiency and high reliability and low cost requirements;
2、通过设置断油阀，可避免空压机停机时润滑油流向机头，从而避免螺杆长时间浸泡在冷却的润滑油里；2. By setting the oil cut-off valve, it can prevent the lubricating oil from flowing to the machine head when the air compressor stops, so as to prevent the screw from being soaked in the cooled lubricating oil for a long time;
3、通过设置温控阀，可使润滑油再温度较低时不用经过油冷却器即可进入机头，节约了能源；3. By setting the temperature control valve, the lubricating oil can enter the machine head without going through the oil cooler when the temperature is low, saving energy;
4、通过设置油过滤器，可避免断油阀和控制阀堵塞，从而确保机头的供油量，保证机头的冷却效果。4. By setting the oil filter, the blockage of the oil cut-off valve and control valve can be avoided, so as to ensure the oil supply of the machine head and the cooling effect of the machine head.
附图说明Description of drawings
图1为本发明的空压机的回油系统的系统流程图。Fig. 1 is a system flow chart of the oil return system of the air compressor of the present invention.
具体实施方式Detailed ways
下面，结合附图，对本发明的结构以及工作原理等作进一步的说明。Below, the structure and working principle of the present invention will be further described in conjunction with the accompanying drawings.
参见图1，以螺杆压缩机为例，本发明的空压机的回油系统，包括依次连接的机头1、油分离器2、油冷却器4，油冷却器4和机头1之间连接有第一回油管路6和第二回油管路7。该第一回油管路6和第二回油管路7均与机头1的转子腔直接连通。由机头1出来的油气混合物首先进入油分离器2进行油气分离，由油分离器2分离出来的润滑油再进入油冷却器4进行冷却，冷却后的润滑油再通过第一回油管路6和第二回油管路7返回机头1的转子腔内。Referring to Fig. 1, taking a screw compressor as an example, the oil return system of the air compressor of the present invention includes a machine head 1, an oil separator 2, an oil cooler 4 connected in sequence, and between the oil cooler 4 and the machine head 1 A first oil return pipeline 6 and a second oil return pipeline 7 are connected. Both the first oil return pipeline 6 and the second oil return pipeline 7 are directly connected with the rotor cavity of the machine head 1 . The oil-air mixture from the machine head 1 first enters the oil separator 2 for oil-gas separation, and the lubricating oil separated by the oil separator 2 enters the oil cooler 4 for cooling, and the cooled lubricating oil passes through the first oil return pipeline 6 And the second oil return pipeline 7 returns to the rotor cavity of the machine head 1 .
上述第一回油管路6可根据空压机的开停机来控制系统油路的通断，从而避免空压机停机瞬间润滑油仍流至机头1，进而避免螺杆长时间在冷却的润滑油中浸泡。具体地，当空压机开机时，第一回油管路6接通，由油冷却器4出来的润滑油即可经第一回油管路6流向机头1；当空压机停机时，第一回油管路6断开，由油冷却器4出来的润滑油无法流向机头1。The above-mentioned first oil return line 6 can control the on-off of the system oil circuit according to the start and stop of the air compressor, so as to avoid the lubricating oil still flowing to the machine head 1 when the air compressor is shut down, thereby avoiding the lubricating oil of the screw cooling for a long time Soak in. Specifically, when the air compressor is turned on, the first oil return line 6 is connected, and the lubricating oil from the oil cooler 4 can flow to the machine head 1 through the first oil return line 6; The oil pipeline 6 is disconnected, and the lubricating oil coming out from the oil cooler 4 cannot flow to the machine head 1.
作为一种方式，第一回油管路6上可设置用于控制第一回油管路6通断的断油阀8。该断油阀8有电磁式断油阀和机械式断油阀两种，其中，电磁式断油阀8可靠性差，寿命短，容易发生误动作，因此，作为优选，本发明的空压机的回油系统采用机械式断油阀，该断油阀8能够及时、准确地向机头1内供油和断油，其可采用公告号为CN201751640U的中国实用新型专利公开的气动机械式断油阀，或者采用公告号为CN202927443U的中国实用新型专利公开的一种螺杆空压机用断油阀8。该断油阀8具有进气口、进油口和出油口，该断油阀8的进气口与机头1的出气口连接，该断油阀8的进油口与油冷却器4的出油口连接，该断油阀8的出油口与机头1连接。当空压机开机后产生的压缩空气由断油阀8的进气口进入该断油阀8内，在压缩空气的压力作用下使得该断油阀8的进油口和出油口相通，第一回油管路6中的润滑油则通过该断油阀8的出油口流向机头1；当空压机停机后，无压缩空气由该断油阀8的进气口进入该断油阀8，从而使得该断油阀8的进油口和出油口不相通，第一回油管路6中的润滑油则无法流向机头1。As a way, the first oil return line 6 may be provided with an oil cut-off valve 8 for controlling the on-off of the first oil return line 6 . The oil cut-off valve 8 has two types: an electromagnetic oil cut-off valve and a mechanical oil cut-off valve. Among them, the electromagnetic oil cut-off valve 8 has poor reliability, short life, and is prone to malfunction. Therefore, as a preference, the air compressor of the present invention The oil return system adopts a mechanical oil cut-off valve. The oil cut-off valve 8 can supply oil to and cut off the oil in the machine head 1 in a timely and accurate manner. Oil valve, perhaps adopt notification number to be that CN202927443U Chinese utility model patent discloses a kind of screw air compressor oil cut-off valve 8. The oil cut-off valve 8 has an air inlet, an oil inlet and an oil outlet, the air inlet of the oil cut-off valve 8 is connected with the air outlet of the machine head 1, the oil inlet of the oil cut-off valve 8 is connected with the oil cooler 4 The oil outlet of the oil cut-off valve 8 is connected with the machine head 1. When the air compressor is turned on, the compressed air generated by the oil cut-off valve 8 enters the oil cut-off valve 8 through the air inlet, and under the pressure of the compressed air, the oil inlet and the oil outlet of the oil cut-off valve 8 are connected. The lubricating oil in an oil return line 6 flows to the machine head 1 through the oil outlet of the oil cut-off valve 8; when the air compressor stops, no compressed air enters the oil cut-off valve 8 from the air inlet of the oil cut-off valve 8 , so that the oil inlet and outlet of the oil cut-off valve 8 are not connected, and the lubricating oil in the first oil return line 6 cannot flow to the machine head 1 .
上述第二回油管路7可根据机头1的温度大小调节机头1的供油量，从而将机头1的温度控制在合适的温度。在空压机运行过程中，机头1温度不断升高，尤其是在高温环境下，机头1的温度远超过95度，此时第一回油管路6的供油量已无法满足要求，产生因机头1的温度过高而引起的一系列问题，此时，可通过接通第二回油管路7来增大机头1的供油量，降低机头1的温度，以提高机组的可靠性。具体地，当机头1的温度大于第一设定值时，第二回油管路7接通；当机头1的温度下降至小于第二设定值时，第二回油管路7断开，减小机头2的供油量，以提高机组能效。The above-mentioned second oil return pipeline 7 can adjust the oil supply amount of the machine head 1 according to the temperature of the machine head 1, so as to control the temperature of the machine head 1 at an appropriate temperature. During the operation of the air compressor, the temperature of the head 1 continues to rise, especially in a high-temperature environment, the temperature of the head 1 far exceeds 95 degrees. At this time, the oil supply of the first oil return pipeline 6 can no longer meet the requirements. There are a series of problems caused by the high temperature of the machine head 1. At this time, the oil supply of the machine head 1 can be increased by connecting the second oil return line 7, and the temperature of the machine head 1 can be lowered to improve the unit. reliability. Specifically, when the temperature of the machine head 1 is greater than the first set value, the second oil return line 7 is connected; when the temperature of the machine head 1 drops below the second set value, the second oil return line 7 is disconnected , reduce the fuel supply of nose 2 to improve the energy efficiency of the unit.
作为一种方式，第二回油管路7上可设置用于控制第二回油管路7通断的控制阀9，同时，机头1上设有用于检测机头1的温度的温度传感器(图中未示出)，控制阀9和温度传感器之间连接有控制器10，该控制器10能够根据温度传感器输出的温度信号来控制控制阀9的开闭，即当机头1的温度大于第一设定值时，该控制器10控制控制阀9打开以接通第二回油管路7；当机头1的温度降低至小于第二设定值时，该控制器10控制控制阀9打开以断开第二回油管路7。其中，第一设定值和第二设定值均可根据机组实际情况和要求设定，例如，第一设定值选为93度，第二设定值选为88度。As a way, the second oil return line 7 can be provided with a control valve 9 for controlling the on-off of the second oil return line 7, and at the same time, the machine head 1 is provided with a temperature sensor for detecting the temperature of the machine head 1 (Fig. not shown in), a controller 10 is connected between the control valve 9 and the temperature sensor, and the controller 10 can control the opening and closing of the control valve 9 according to the temperature signal output by the temperature sensor, that is, when the temperature of the machine head 1 is greater than the first At a set value, the controller 10 controls the control valve 9 to open to connect the second oil return line 7; when the temperature of the machine head 1 drops below the second set value, the controller 10 controls the control valve 9 to open To disconnect the second oil return line 7. Wherein, the first set value and the second set value can be set according to the actual situation and requirements of the unit, for example, the first set value is selected as 93 degrees, and the second set value is selected as 88 degrees.
上述控制阀9可以为电动控制阀或气动控制阀，由于气动控制阀的管路较复杂，因此，本发明的空压机的回油系统的控制阀9优选为电动控制阀，例如两位两通电磁阀。The above-mentioned control valve 9 can be an electric control valve or a pneumatic control valve. Since the pipeline of the pneumatic control valve is relatively complicated, the control valve 9 of the oil return system of the air compressor of the present invention is preferably an electric control valve, such as two positions and two positions. through the solenoid valve.
由于空压机开机的初始阶段，系统内的润滑油温度较低，不需要油冷却器4对其进行冷却，若温度较低的润滑油还经油冷却器4冷却后再进入机头1，容易导致因润滑油温度过低而使机组系统内出现冷凝水，因此，为了避免产生冷凝水，且节约能源，作为本发明的空压机的回油系统的进一步改进，油分离器2和油冷却器4之间设有温控阀3，该温控阀3具有一个进油口和两个出油口，温控阀3的进油口与油分离器2的出油口连接，温控阀3的一个出油口与油冷却器4的进油口连接，另一个出油口与机头1连接。该温控阀3可根据由油分离器2出来的润滑油的温度大小来确定润滑油是否需要冷却。即当温控阀3的进油温度达到温控阀3的设定温度时，温控阀3与油冷却器4连接的出油口打开，这时，润滑油进入油冷却器4进行冷却后再进入机头1；当温控阀3的进油温度没有达到温控阀3的设定温度时，温控阀3与机头1连接的出油口打开，这时，润滑油可直接进入机头1。Due to the initial stage of starting the air compressor, the temperature of the lubricating oil in the system is relatively low, and the oil cooler 4 is not needed to cool it. It is easy to cause condensed water to appear in the unit system due to the low temperature of the lubricating oil. Therefore, in order to avoid condensed water and save energy, as a further improvement of the oil return system of the air compressor of the present invention, the oil separator 2 and the oil A temperature control valve 3 is provided between the coolers 4. The temperature control valve 3 has an oil inlet and two oil outlets. The oil inlet of the temperature control valve 3 is connected to the oil outlet of the oil separator 2. The temperature control One oil outlet of the valve 3 is connected with the oil inlet of the oil cooler 4, and the other oil outlet is connected with the engine head 1. The temperature control valve 3 can determine whether the lubricating oil needs to be cooled according to the temperature of the lubricating oil coming out of the oil separator 2 . That is, when the oil inlet temperature of the temperature control valve 3 reaches the set temperature of the temperature control valve 3, the oil outlet connecting the temperature control valve 3 and the oil cooler 4 is opened. At this time, the lubricating oil enters the oil cooler 4 for cooling Then enter the machine head 1; when the oil inlet temperature of the temperature control valve 3 does not reach the set temperature of the temperature control valve 3, the oil outlet connected between the temperature control valve 3 and the machine head 1 is opened, at this time, the lubricating oil can directly enter Machine head 1.
在空压机的运行过程中，空气中的杂质不可避免地有小部分混入润滑油中，在流经上述断油阀8和控制阀9时就有可能造成沉淀堵塞，以致断油阀8不能随着空压机的开机而打开，控制阀9也不能及时打开，处于关闭或半关闭状态，这样将减少润滑油的流量，使机头1的冷却效果受到严重的影响，因此，作为进一步的改进，油冷却器4和机头1之间设有油过滤器5，具体地，该油过滤器5设于油冷却器4和断油阀8、控制阀9之间，其可以对润滑油进行过滤，确保机头1的供油量，从而保证空压机正常运行，延长空压机的使用寿命。During the operation of the air compressor, a small part of impurities in the air is inevitably mixed into the lubricating oil, which may cause sedimentation and blockage when flowing through the above-mentioned oil cut-off valve 8 and control valve 9, so that the oil cut-off valve 8 cannot As the air compressor starts to open, the control valve 9 cannot be opened in time, and is in a closed or semi-closed state, which will reduce the flow of lubricating oil and seriously affect the cooling effect of the machine head 1. Therefore, as a further Improvement, an oil filter 5 is arranged between the oil cooler 4 and the machine head 1, specifically, the oil filter 5 is arranged between the oil cooler 4 and the oil cut-off valve 8 and the control valve 9, which can filter the lubricating oil Filtering is carried out to ensure the oil supply of the machine head 1, thereby ensuring the normal operation of the air compressor and prolonging the service life of the air compressor.
以上，仅为本发明的示意性描述，本领域技术人员应该知道，在不偏离本发明的工作原理的基础上，可以对本发明作出多种改进，这均属于本发明的保护范围。The above is only a schematic description of the present invention, and those skilled in the art should know that various improvements can be made to the present invention without departing from the working principle of the present invention, which all belong to the protection scope of the present invention.
Claims (8)
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