Pipeline structure for cooperative pressure control of air compressor

Abstract

The utility model provides a pipeline structure for cooperative pressure control of an air compressor, which is characterized in that an emptying valve is arranged in parallel between an air compressor host and an air circulation loop of an oil separation barrel through a connecting piece, the input end of the connecting piece is connected with the output end of a pressure relief opening on the oil separation barrel, and the first output end of the connecting piece is communicated with an air inlet valve of the air compressor through an electromagnetic valve; and the second output end is connected to an air filter through an emptying valve. The pressure rising and falling efficiency in the oil drum is regulated and controlled by controlling opening and closing of the emptying valve, oil circulation in the air compressor is guaranteed, meanwhile, the phenomenon that the air compressor runs on load due to the fact that the pressure of the oil drum is not discharged in time when the air compressor is restarted within a short time is avoided, and the use durability of the air compressor can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a pipeline structure for collaborative pressure control of an air compressor. Background Art

[0002] An air compressor is a main equipment for providing gas source power and is one of the essential equipment in industrial production activities. Since the air compressor needs to set the operating temperature of the air compressor within a predetermined range according to the temperature adaptation range of the oil components, an alarm shutdown will occur if the temperature exceeds this range. In actual applications, we found that during the pre-operation period of the air compressor intake valve, the intake and discharge holes will be opened simultaneously, resulting in a slow establishment of the pressure inside the oil separation barrel. As a result, the oil circulation is not timely during the operation of the air compressor, leading to a high-temperature alarm during startup. The solution of the existing technology is to reduce the pressure discharge inside the oil separation barrel by adjusting the discharge bolt on the oil separation barrel, so that the internal pressure of the oil barrel can be well established. However, in the process of using the air compressor, since this solution slows down the pressure relief efficiency inside the oil separation barrel, when the air compressor starts again, the internal pressure of the oil barrel has not been completely discharged, which easily causes the air compressor to start with load and affects the service life of the air compressor. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a pipeline structure for collaborative pressure control of an air compressor, which is used to regulate the pressure rise and fall efficiency inside the oil barrel, avoid the air compressor from running with load while ensuring the oil circulation inside the air compressor, and improve the durability of the air compressor.

[0004] To solve the above technical problems, the utility model provides a pipeline structure for collaborative pressure control of an air compressor, which is arranged in parallel between the air circulation loop of the air compressor main unit and the oil separation barrel to adjust the pressure drop of the oil separation barrel. It is characterized in that it includes a connecting piece, the input end of the connecting piece is connected to the output end of the pressure relief port on the oil separation barrel, its first output end is connected to the intake valve of the air compressor through a solenoid valve, and its second output end is connected to the air filter through a vent valve.

[0005] The vent valve is a pressure valve, and the input end of the pressure valve is connected to the intake valve.

[0006] In a preferred embodiment: in the pressure accumulation state, the solenoid valve is opened, the air compressor main unit starts and supplies pressure to the oil separation barrel, and the pressure air flow inside the oil separation barrel returns to the intake valve of the air compressor main unit along the pressure relief port to realize the pressure rise control of the oil separation barrel;

[0007] In the pressure relief state, the solenoid valve is closed, the air pressure inside the intake valve increases and drives the vent valve to open, and the pressure air flow inside the oil separation barrel enters the vent valve along the pressure relief port and is discharged to the air filter to realize the pressure drop adjustment of the oil separation barrel.

[0008] In a preferred embodiment: the connecting piece is a tee.

[0009] In a preferred embodiment, the pressure valve is a positive pressure valve.

[0010] In a preferred embodiment, the air compressor main unit is a screw air compressor.

[0011] Compared with the prior art, the technical solution of the present utility model has the following beneficial effects:

[0012] The present utility model provides a pipeline structure for collaborative pressure control of an air compressor. By connecting the vent valve in parallel between the air circulation loop of the air compressor main unit and the oil separator barrel, it is used to regulate the pressure rise and fall efficiency in the oil barrel, avoid the air compressor from running under load while ensuring the oil circulation in the air compressor, and improve the service durability of the air compressor.

[0013] The present utility model provides a pipeline structure for collaborative pressure control of an air compressor. Based on the original pipeline connection structure of the air compressor, it is designed and improved with the characteristics of low setting cost, reliable structural performance and easy installation. It can effectively clean the filter element relatively without loss by using the pressure air reversely released in the oil separator barrel, and enhance the filtering effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the pipeline connection structure of the existing air compressor structure;

[0015] Figure 2 It is a schematic diagram of the pipeline connection structure for collaborative pressure control of the air compressor of the present utility model;

[0016] Figure 3 For Figure 2 partial enlarged view;

[0017] Figure 4 It is a diagram of the air pressure flow direction in the pipeline structure of the present utility model under the pressure accumulation state;

[0018] Figure 5 It is a diagram of the air pressure flow direction in the pipeline structure of the present utility model under the pressure release state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Figure 1 It is a schematic diagram of the pipeline connection in the air compressor commonly used in the current prior art. Since there is a pre-operation stage during the start-up process of the air compressor main unit 2, the intake valve 22 of the air compressor will have its intake port and drain hole opened simultaneously during the pre-operation period, which directly leads to the slow establishment of the internal pressure of the oil separation barrel 3. Coupled with the short pre-operation stage, after the pre-operation ends, the air compressor main unit 2 enters the formal operation stage. After the air compressor main unit 2 enters the formal operation stage, its rotational speed increases. At the same time, since the internal pressure of the oil separation barrel 3 is not fully established, the high-speed operation of the air compressor main unit 2 causes the fuselage to heat up rapidly, and the cooling oil in the oil separation barrel 3 cannot supply lubricating oil to the main unit in time due to the incomplete establishment of the internal pressure, directly resulting in phenomena such as high-temperature alarm or even shutdown of the main unit. Currently, in order to accelerate the establishment of the internal pressure of the oil separation barrel 3, operators usually adopt the method of reducing the aperture of the drain hole of the oil separation barrel 3, that is, reducing the pipe diameter of the pipeline a to control the internal pressure rise of the oil separation barrel 3, so as to ensure that after the air compressor main unit 2 enters the formal operation stage, the air pressure in the oil separation barrel 3 can meet the requirement of supplying the separated lubricating oil to the main unit for cooling the main unit. However, while reducing the drain aperture of the oil separation barrel 3, when the air compressor main unit 2 stops working, the internal pressure of the oil separation barrel 3 cannot be quickly discharged. When the air compressor main unit 2 is restarted within a short time, there will be a phenomenon that the air compressor main unit 2 operates with load, which not only increases the power cost of the system operation, but also directly affects the service life and performance of the air compressor.

[0023] Based on the above technical problems, the embodiment of the utility model utilizes the circulation characteristics of the gas circuit of the existing air compressor connection system, and performs retrofitting and modification on the basis of the original system connection. By setting a vent valve 24 in parallel between the air compressor main unit 2 and the gas circulation circuit of the oil separator 3, the pressure drop of the oil separator 3 is adjusted to ensure the oil circulation in the air compressor while avoiding the phenomenon of load operation when the air compressor main unit 2 is started for the second time in a short period of time, thereby improving the service durability of the air compressor.

[0024] Specifically, refer to Figures 2-5 As shown, the cooperative pressure control pipeline structure described in the embodiment of the utility model includes a connector 23, the input end of the connector 23 is connected to the pressure relief port output end of the oil separator barrel 3, the first output end thereof is connected to the air intake valve 22 of the air compressor through the solenoid valve 21, and the second output end thereof is connected to the air filter 1 through the vent valve 24. It can be understood that, on the basis of the existing air compressor connection structure, this embodiment adds a connector 23 to shunt the pipeline a connected to the discharge port of the oil separator barrel 3, and shunts the air pressure of the oil separator barrel 3 to the vent valve 24 through the connector 23. The vent valve 24 is opened under the working condition that meets the power pressure, and the air pressure flow can be discharged to the air filter 1 along the discharge port of the vent valve 24, ensuring that the air pressure flow in the oil separator barrel 3 is quickly released after the air compressor main engine 2 stops running, avoiding the phenomenon of load operation when the air compressor main engine 2 is started for the second time.

[0025] Specifically, the connector 23 described in this embodiment is a three-way connection, the air compressor main unit 2 is a screw air compressor, and the vent valve 24 is a pressure valve. In addition, the pressure valve is a positive pressure valve. The input end of the positive pressure valve is connected to the air intake valve 22. Since the air intake valve 22 is connected to the air compressor main unit 2, when the air compressor main unit 2 is powered on, the interior of the air intake valve 22 is in a negative pressure state, and the vent valve 24 is in a closed state. When the air compressor main unit 2 is powered off and stopped, the negative pressure in the air intake valve 22 disappears, and the air pressure flow in the first output end of the connector 23 instantly enters the air intake valve 22 to generate a pressure difference in its cavity, and the pressure valve connected to the air intake valve 22 is opened accordingly. After the pressure air flow flows through the vent valve 24 along the second output end of the connector 23, it is exhausted outward against the air filter 1 inhalation direction, and the pressure air flow in the oil separator barrel 3 is quickly released, so as to avoid the phenomenon of load operation when the air compressor main unit 2 is started for the second time in a short time. In addition, the pressurized airflow output from the oil separator barrel 3 is exhausted in the opposite direction of the air filter 1 to perform high-pressure blowing on the filter element of the air filter 1, and can also effectively blow away the dust and impurities adhering to the outer surface of the filter element, and can effectively self-clean the filter element relatively non-destructively, thereby enhancing the filtering effect of the filter element and extending its service life.

[0026] The operating principle of the present utility model is as follows: By parallely arranging a blow-off valve 24 on the basis of the original air circuit of the air compressor, when the main engine 2 of the air compressor is in the pressure accumulation state, the solenoid valve 21 arranged on the intake valve 22 is opened, the main engine 2 of the air compressor is powered on and starts to supply pressure to the oil separator barrel 3, the air pressure in the oil separator barrel 3 is gradually accumulated and returns to the intake valve 22 of the main engine 2 of the air compressor along the pipeline a through its pressure relief port to realize the internal circulation of the air port, and the pressure rise efficiency in the oil separator barrel 3 is improved; when the main engine 2 of the air compressor is in the pressure release state, the main engine 2 of the air compressor stops running, the solenoid valve 21 is closed, the air pressure in the intake valve 22 rises to drive the blow-off valve 24 to open, and the air pressure in the oil separator barrel 3 enters the blow-off valve 24 along the pressure relief port and is discharged to the air filter 1 to realize the pressure drop adjustment of the oil separator barrel 3.

[0027] As described above, it is only the preferred specific implementation mode of the present utility model, but the design concept of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model who makes non-substantive modifications to the present utility model using this concept shall fall within the scope of infringement of the protection scope of the present utility model.

Claims

1. A pipeline structure for collaborative pressure control of an air compressor, which is arranged in parallel between the air circulation loop of the air compressor main unit and the oil separator barrel to adjust the pressure drop of the oil separator barrel, and is characterized in that; It includes a connecting piece. The input end of the connecting piece is connected to the output end of the pressure relief port on the oil separator barrel. Its first output end is communicated with the intake valve of the air compressor through a solenoid valve, and its second output end is connected to the air filter through a vent valve. The vent valve is a pressure valve, and the input end of the pressure valve is communicated with the intake valve.

2. The pipeline structure for collaborative pressure control of an air compressor according to claim 1, characterized in that: In the pressure accumulation state, the solenoid valve is opened, the main engine of the air compressor starts and supplies pressure to the oil separator barrel, and the pressurized air flow in the oil separator barrel returns to the intake valve of the air compressor main engine along the pressure relief port to realize the pressure rise control of the oil separator barrel. In the pressure release state, the solenoid valve is closed, the air pressure in the intake valve rises and drives the vent valve to open, and the pressurized air flow in the oil separator barrel enters the vent valve along the pressure relief port and is discharged to the air filter to realize the pressure drop adjustment of the oil separator barrel.

3. The pipeline structure for collaborative pressure control of an air compressor according to claim 1, characterized in that: The connecting piece is a tee.

4. A pipeline structure for collaborative pressure control of an air compressor according to claim 1, characterized in that: The pressure valve is a positive pressure valve.

5. The pipeline structure for collaborative pressure control of an air compressor according to claim 1, characterized in that: The main engine of the air compressor is a screw air compressor.

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