Negative pressure testing device for oil mist filter element

Abstract

The utility model relates to the technical field of filter element testing, in particular to a negative pressure testing device for an oil mist filter element, which comprises an oil mist generator, a filter element testing bin, a vortex vacuum pump and a data comprehensive display system. An outlet of the filter element testing bin is communicated with the vortex vacuum pump through an air conveying pipe, precise mass flow meters are installed on the outer side of the air conveying pipe and the outer side of the oil mist conveying pipe, and a flow adjusting valve is installed on the outer side of the air conveying pipe. Centralized control and data acquisition of components such as an oil mist concentration sensor, a precise mass flow meter, a vortex vacuum pump, a front-stage pressure transmitter, a rear-stage pressure transmitter, a vacuum meter, a vacuum pressure meter, an atmosphere sampling tester, a flow regulating valve and an oil mist pressure transmitter of a test bin are realized through a data comprehensive display system, so that the requirement of manual intervention is reduced; the automatic testing process improves the testing efficiency and reduces errors caused by manual operation.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element testing, in particular to a negative pressure testing device for an oil mist filter element. Background Art

[0002] With the continuous development of industrial production, the problem of oil mist generated during the operation of various types of mechanical equipment has become increasingly prominent. Oil mist not only pollutes the working environment, but also affects the normal operation of equipment and even endangers the health of operators. Therefore, efficient oil mist filtration systems have become an indispensable part of industrial production. As the core component of the filtration system, the performance of the oil mist filter element directly affects the filtration effect. To ensure the reliability and effectiveness of oil mist filter elements, negative pressure testing has become a key quality control method.

[0003] Although existing negative pressure test devices for oil mist filter elements can meet basic testing needs to a certain extent, the design of some traditional test devices is relatively complex, which not only increases the cost of the equipment but also brings difficulties to daily maintenance. Some test devices require frequent manual intervention and cannot achieve fully automated testing, which not only reduces work efficiency but also affects the consistency and reliability of test results. Due to the large number of manual adjustments and measurement methods used, errors are easily introduced, resulting in inaccurate test results. The complex operating procedures and manual adjustment steps make the testing process cumbersome and increase the difficulty of operation. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a negative pressure testing device for an oil mist filter element, comprising an oil mist generator, a filter element test chamber, a vortex vacuum pump and a data integrated display system, wherein the outlet of the oil mist generator is connected to the inlet of the filter element test chamber through an oil mist delivery pipe, and the outlet of the filter element test chamber is connected to the vortex vacuum pump through an air delivery pipe, and precision mass flow meters are installed on the outside of the air delivery pipe and the oil mist delivery pipe, and a flow regulating valve is installed on the outside of the air delivery pipe, the filter element test chamber is divided into an upper chamber and a lower chamber, and a test chamber front and rear stage pressure transmitter connected to the upper chamber and the lower chamber respectively is installed on the left side of the filter element test chamber, and a vacuum pressure gauge connected to the upper chamber and a vacuum gauge connected to the lower chamber are also installed on the right side of the test chamber front and rear stage pressure transmitters.

[0005] Furthermore, an oil mist concentration sensor is installed on the oil mist generator.

[0006] Furthermore, an oil mist pressure transmitter is installed at the outlet of the oil mist generator.

[0007] Furthermore, an atmospheric sampling tester is installed on the outside of the air delivery pipe.

[0008] Furthermore, the oil mist concentration sensor, precision mass flowmeter, eddy current vacuum pump, test chamber front and rear stage pressure transmitters, vacuum gauge, vacuum pressure gauge, atmospheric sampling tester, flow regulating valve and oil mist pressure transmitter are respectively connected to the input port of the data integrated display system.

[0009] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0010] Negative pressure test device for the oil mist filter element:

[0011] 1. The integrated data display system enables centralized control and data collection of components such as the oil mist concentration sensor, precision mass flow meter, eddy current vacuum pump, pressure transmitters before and after the test chamber, vacuum gauge, vacuum pressure gauge, atmospheric sampling tester, flow control valve, and oil mist pressure transmitter, reducing the need for manual intervention. The automated testing process improves test efficiency and reduces errors caused by human operation.

[0012] 2. Precision mass flow meters ensure consistent test conditions, while oil mist concentration sensors and atmospheric sampling testers provide accurate data. Pressure transmitters, vacuum gauges, and pressure gauges before and after the test chamber enhance the reliability of test results. Flow control valves and oil mist pressure transmitters streamline operational procedures. The automated control system reduces maintenance costs and labor intensity, while centralized data management improves overall system stability. The flexible system design allows for adjustments to operating conditions based on diverse testing requirements, offering excellent scalability and adaptability to diverse testing scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the utility model.

[0014] In the figure: 1. Oil mist generator; 2. Oil mist concentration sensor; 3. Oil mist delivery pipe; 4. Precision mass flow meter; 5. Filter element test chamber; 6. Data integrated display system; 7. Eddy current vacuum pump; 9. Pressure transmitters before and after the test chamber; 10. Air delivery pipe; 11. Vacuum gauge; 12. Vacuum pressure gauge; 13. Atmospheric sampling tester; 14. Flow control valve; 15. Oil mist pressure transmitter. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1 , a negative pressure testing device for an oil mist filter element in this embodiment includes an oil mist generator 1, a filter element test chamber 5, a data integrated display system 6 and a vortex vacuum pump 7. The outlet end of the oil mist generator 1 is fixed with an oil mist delivery pipe 3 connected to the inlet of the filter element test chamber 5. The interior of the filter element test chamber 5 is divided into an upper chamber and a lower chamber, wherein the filter element is installed in the upper chamber, and a vacuum pressure gauge 12 connected to the upper chamber and a vacuum gauge 11 connected to the lower chamber are fixed on the right side of the filter element test chamber 5, and a test chamber front and rear stage pressure transmitter 9 connected to the upper and lower chambers respectively is fixed on the right side. An air delivery pipe 10 connected to the vortex vacuum pump 7 is fixed at the outlet of the lower chamber on the left side of the filter element test chamber 5. Precision mass flow meters 4 are installed on the outside of the air delivery pipe 10 and the oil mist delivery pipe 3. A flow regulating valve 14 and an atmospheric sampling tester 13 are also installed on the outside of the air delivery pipe 10. An oil mist pressure transmitter 15 and an oil mist concentration sensor 2 are installed on the oil mist generator 1;

[0017] The oil mist concentration sensor 2, precision mass flowmeter 4, eddy current vacuum pump 7, test chamber front and rear stage pressure transmitter 9, vacuum gauge 11, vacuum pressure gauge 12, atmospheric sampling tester 13, flow regulating valve 14 and oil mist pressure transmitter 15 are respectively connected to the input port of the data integrated display system 6.

[0018] In the above structure, the integrated data display system enables centralized control and data collection for components such as the oil mist concentration sensor, precision mass flowmeter, vortex vacuum pump, pressure transmitters before and after the test chamber, vacuum gauge, vacuum pressure gauge, atmospheric sampling tester, flow control valve, and oil mist pressure transmitter, reducing the need for manual intervention. The automated testing process improves test efficiency and reduces errors caused by manual operation.

[0019] Among them, the precision mass flow meter can accurately control the flow of oil mist and air to ensure the consistency of test conditions.

[0020] Among them, the oil mist concentration sensor and atmospheric sampling tester can monitor the concentration changes of oil mist in real time and provide accurate data support.

[0021] Among them, the front and rear pressure transmitters of the test chamber are installed in the upper and lower chambers of the filter element test chamber respectively, which can accurately measure the pressure difference at both ends of the filter element, thereby evaluating the performance of the filter element.

[0022] Among them, the vacuum gauge and vacuum pressure gauge can monitor the negative pressure of the system to ensure that the test conditions meet the requirements.

[0023] Among them, the flow control valve is adjusted through the data integrated display system, which simplifies the operation process.

[0024] Among them, the oil mist pressure transmitter can monitor the pressure changes of the oil mist, which is convenient for adjusting the working state of the oil mist generator.

[0025] The working principle of the above embodiment is:

[0026] By installing the test filter element in the upper compartment of the filter element test compartment, the oil mist output by the oil mist generator enters the filter element test compartment through the oil mist delivery pipe and the precision mass flowmeter. At the same time, the oil mist concentration sensor monitors the concentration change of the oil mist, and the oil mist pressure transmitter monitors the pressure change of the oil mist, so that the pressure of the oil mist in the oil mist generator 1 is 5Kpa. The oil mist concentration is input to the data integrated display system through the signal. At the same time, the precision mass flowmeter inputs the recorded flow into the data control system at the same time. At this time, the pressure of the filter element in the filter element test compartment is positive. Pay attention to the pressure of the vacuum pressure gauge. At the same time, turn on the vortex vacuum pump. At this time, observe the pressure of the vacuum gauge and the vacuum pressure gauge. By adjusting the flow control valve, after the pressure of the entire system is stable, you can start the filter element test.

[0027] The entire workflow is complete, and all contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] It should be noted that in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure test device for an oil mist filter element, characterized in that: The invention comprises an oil mist generator (1), a filter element test chamber (5), an eddy current vacuum pump (7) and a data integrated display system (6). The outlet of the oil mist generator (1) is connected to the inlet of the filter element test chamber (5) through an oil mist delivery pipe (3), and the outlet of the filter element test chamber (5) is connected to the eddy current vacuum pump (7) through an air delivery pipe (10). The outsides of the air delivery pipe (10) and the oil mist delivery pipe (3) are both installed with a precision mass flow meter (4). The outside of the air delivery pipe (10) is installed with a flow regulating valve (14). The filter element test chamber (5) is divided into an upper chamber and a lower chamber, and a test chamber front and rear stage pressure transmitter (9) respectively connected to the upper chamber and the lower chamber is installed on the left side of the filter element test chamber (5). A vacuum pressure gauge (12) connected to the upper chamber and a vacuum gauge (11) connected to the lower chamber are also installed on the right side of the test chamber front and rear stage pressure transmitter (9).

2. The negative pressure testing device for an oil mist filter according to claim 1, characterized in that: An oil mist concentration sensor (2) is installed on the oil mist generator (1).

3. The negative pressure testing device for an oil mist filter element according to claim 2, characterized in that: An oil mist pressure transmitter (15) is installed at the outlet of the oil mist generator (1).

4. The negative pressure testing device for an oil mist filter element according to claim 3, characterized in that: An atmospheric sampling tester (13) is installed on the outside of the air delivery pipe (10).

5. The negative pressure testing device for an oil mist filter element according to claim 4, characterized in that: The oil mist concentration sensor (2), the precision mass flowmeter (4), the vortex vacuum pump (7), the test chamber front and rear stage pressure transmitters (9), the vacuum gauge (11), the vacuum pressure gauge (12), the atmospheric sampling tester (13), the flow regulating valve (14) and the oil mist pressure transmitter (15) are respectively connected to the input port of the data integrated display system (6).

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