A marine diesel engine filter element quality detection system

Abstract

The present application relates to a kind of marine diesel engine filter core quality detection system, including the assembly module for assembling air filter, for conveying the fan module with dust airflow in shell;Several dust generation modules for providing different particle size dust, and the flow proportion of different dust generation modules is controlled by flow control valve.The same batch of air filter is detected in quality under different dust proportion by using multiple dust generation modules, and hollow ring for introducing airflow is arranged in dust generation module, so that the dust content of inhaled airflow is stable, and the dust content of different particle size is accurately controlled by flow control valve, the service life of air filter under different particle size dust and different mixing ratio is tested, so that the quality of multistage air filter can be accurately obtained.

Description

Technical Field

[0001] This invention belongs to the field of filter element testing technology, specifically relating to a quality testing system for marine diesel engine filters. Background Technology

[0002] Marine diesel engines generally have three types of filters: air filter, oil filter, and diesel filter. The air filter is used to prevent suspended particles in the air from entering the engine combustion chamber. During the production of air filters, quality testing is required. The quality testing indicators include the dust filtration accuracy, service life, and airflow efficiency.

[0003] Marine diesel engines, due to their high power and high air intake, generally employ multi-stage filtration in their air filters to extend their service life. However, existing testing devices lack precise control over dust content and the proportion of dust particles of different sizes. For multi-stage filters, the aforementioned testing methods cannot accurately determine their true service life. Summary of the Invention

[0004] The purpose of this invention is to provide a quality inspection system for marine diesel engine filters in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A quality inspection system for marine diesel engine filters, comprising:

[0007] An assembly module for assembling an air filter element includes a housing and a connecting pipe that connects to the outlet end of the air filter element, wherein a first air pressure sensor is provided in the middle section of the connecting pipe.

[0008] A blower module, used to deliver airflow containing dust into the housing, includes a blower and a second air pressure sensor located at the outlet of the blower. The airflow inlet end of the blower is provided with an air inlet pipe, and the end of the air inlet pipe is provided with several branch pipes in parallel, each branch pipe being provided with a flow control valve.

[0009] Several dust generating modules are connected to corresponding pipes, including a box for storing dust. The box is provided with a hollow ring, which is stacked on top of the dust. The hollow ring has a through hole on its inner side and a suction pipe extending to the outside of the box. An L-shaped rod is provided on the upper surface of the hollow ring, and a rotating rod is suspended below the L-shaped rod. The rotating rod is provided with a driving device, and a flexible strip is provided at the bottom of the rotating rod to disturb the dust and make it rise.

[0010] As a further optimization of the present invention, a lifting sliding base is provided at the bottom of the housing. The sliding base is driven by a lifting cylinder and is used to press the air filter against the bottom of the connecting pipe. A weighing pan is provided between the output end of the lifting cylinder and the sliding base. By providing a lifting sliding base, the air filter can be quickly assembled and disassembled, and the weight of dust adsorbed by the air filter can be calculated by changing the reading on the weighing pan.

[0011] As a further optimization of the present invention, the outlet of the blower is connected to the housing through an air outlet pipe for blowing high-pressure air into the housing. The air enters the housing through the outside of the air filter element and enters the connecting pipe from the outlet of the air filter end.

[0012] As a further optimization of the present invention, the dust particles in each of the dust generating modules have different diameters, which is used to test the dust filtration efficiency under different particle sizes. The air volume ratio is controlled by a flow control valve, and the flow rate is calculated.

[0013] As a further optimization of the present invention, the driving device of the rotating rod is a spiral blade set on the surface of the rotating rod, which is driven to rotate by airflow. The driving device rotates by airflow without the need for external power. The flexible strip brushes over the dust, causing the dust to fly up and then mix with the airflow and be sucked into the blower.

[0014] As a further optimization of the present invention, the top of the box is provided with a top cover, and a through groove is opened on one side of the top of the box. Two sets of guide wheels are provided in the through groove, and the suction pipe is arranged between the two guide wheels. The surfaces of the two guide wheels are provided with annular grooves adapted to the suction pipe. A blocking block for sealing the annular groove is provided in the through groove. The blocking block is used to reduce air leakage. The suction pipe is provided to blow the sucked airflow upwards towards the dust. Since the height of the dust will decrease during use, in order to make the negative pressure airflow just pass over the dust, the airflow is led into the hollow ring through the suction pipe. As the height of the hollow ring decreases, one end of the suction pipe is pulled downwards, while the other end remains in the outside air. The shape of the guide wheels and the blocking block reduce the gap and reduce air leakage, so that the negative pressure of the blower can draw the airflow out from the hollow pipe.

[0015] As a further optimization of the present invention, a first dust concentration sensor is provided in the middle section of the connecting pipe, and a second dust concentration sensor is provided at the inlet or outlet end of the flow control valve. The dust content is calculated by the second dust concentration sensor, and then the adsorption amount of dust of various particle sizes is calculated based on the flow rate.

[0016] As a further optimization of the present invention, an airflow compensation component is connected to the side end of the air inlet pipe. The airflow compensation component includes a conical cylinder, the large end of which is connected to the air inlet pipe and the small end of which is connected to the outside. A trapezoidal side groove for air intake is provided on the side wall of the conical cylinder. A valve block is slidably arranged inside the conical cylinder to control the opening of the trapezoidal side groove. The valve block is kept normally closed by a spring. When the air inlet pipe of the blower generates negative pressure, the flow rate is controlled by the flow control valve. When the flow rate is insufficient, air is drawn in through the airflow compensation component to supplement it.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention employs multiple dust generation modules to perform quality testing on the same batch of air filter elements under different dust ratios. A hollow ring is set in the dust generation module to introduce airflow, so that the dust content of the inhaled airflow is stable. The flow control valve is used to precisely control the dust content of different particle sizes. The service life of the air filter element under different particle sizes and different mixing ratios can be tested, thereby accurately determining the quality of multi-stage air filter elements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the dust generating module of the present invention;

[0021] Figure 3 This is a schematic diagram of the guide wheel and suction pipe structure of the present invention;

[0022] Figure 4 This is the invention Figure 1 Enlarged view of the structure of section A in the middle;

[0023] Figure 5 This is a test cross-sectional view of the airflow compensation component of the present invention;

[0024] In the diagram: 1. Assembly module; 11. Housing; 12. Connecting pipe; 13. First air pressure sensor; 14. First dust concentration sensor; 15. Sliding base; 16. Weighing pan; 17. Lifting cylinder; 2. Fan module; 21. Blower; 22. Air outlet pipe; 23. Second air pressure sensor; 24. Air inlet pipe; 25. Second dust concentration sensor; 26. Flow control valve; 3. Dust generating module; 31. Box; 32. Top cover; 33. Hollow ring; 34. L-shaped rod; 35. Rotating rod; 36. Spiral blade; 37. Flexible strip; 38. Suction pipe; 39. Guide wheel; 310. Shielding block; 4. Airflow compensation component; 41. Conical cylinder; 42. Trapezoidal side groove; 43. Valve block; 44. Spring; 5. Air filter element. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Example 1

[0027] like Figure 1-5 As shown, a quality inspection system for marine diesel engine filters includes...

[0028] Assembly module 1, which is used to assemble air filter element 5, includes housing 11 and connecting pipe 12 that is connected to the outlet end of air filter element 5, and a first air pressure sensor 13 is provided in the middle section of connecting pipe 12.

[0029] The blower module 2 is used to deliver airflow containing dust into the housing 11. It includes a blower 21 and a second air pressure sensor 23 located at the outlet of the blower 21. The air inlet end of the blower 21 is provided with an air inlet pipe 24. Several branch pipes are arranged side by side at the end of the air inlet pipe 24. Each branch pipe is provided with a flow control valve 26. The air pressure sensor is Model 223 and the flow control valve 26 is ACU20FDR-B.

[0030] Several dust generating modules 3 are connected to the corresponding pipes, including a box 31 for storing dust. The box 31 is provided with a hollow ring 33, which is stacked on top of the dust. The hollow ring 33 has a through hole on its inner side and a suction pipe 38 extending to the outside of the box 31. An L-shaped rod 34 is provided on the upper surface of the hollow ring 33, and a rotating rod 35 is suspended below the L-shaped rod 34. The rotating rod 35 is provided with a driving device, and a flexible strip 37 for disturbing and raising the dust is provided at the bottom of the rotating rod 35.

[0031] The bottom of the housing 11 is provided with a lifting sliding base 15, which is driven by a lifting cylinder 17 to press the air filter element 5 against the bottom of the connecting pipe 12. A weighing pan 16 is provided between the output end of the lifting cylinder 17 and the sliding base 15. By providing a lifting sliding base 15, the air filter element 5 can be quickly assembled and disassembled, and the weight of dust adsorbed by the air filter element 5 can be calculated by changing the reading on the weighing pan 16.

[0032] The outlet of the blower 21 is connected to the housing 11 through the air outlet pipe 22. The blower 21 is used to blow high-pressure air into the housing 11. The air enters the interior through the outside of the air filter element 5 and enters the connecting pipe 12 from the outlet at the end of the air filter element 5.

[0033] Each dust generating module 3 contains dust particles with different diameters, used to test the dust filtration efficiency under different particle sizes. The air volume ratio is controlled by the flow control valve 26, and the flow rate is calculated.

[0034] A first dust concentration sensor 14 is installed in the middle section of the connecting pipe 12, and a second dust concentration sensor 25 is installed at the inlet or outlet end of the flow control valve 26. The dust content is calculated by the second dust concentration sensor 25, and then the adsorption amount of dust of various particle sizes is calculated based on the flow rate. The dust concentration sensor is an insertion type detector, preferably model JH-GF1000A.

[0035] The drive device for the rotating rod 35 is a spiral blade 36 mounted on the surface of the rotating rod 35. It is driven to rotate by airflow. The drive device rotates by airflow without the need for external power. The flexible strip 37 brushes over the dust, causing the dust to fly up and mix with the airflow before being sucked into the blower 21. Because the air intake of the diesel engine air filter is large, a large negative pressure airflow is formed in the housing 31, which is sufficient to make the rotating rod 35 rotate. However, in practice, the flow control valve 26 may make the flow rate small, and the airflow may not be enough to make the rotating rod 35 rotate. In this case, an electric motor can be used for active drive.

[0036] The top of the housing 31 is provided with a top cover 32. A through groove is opened on one side of the top of the housing 31, and two sets of guide wheels 39 are arranged in the through groove. The suction pipe 38 is arranged between the two guide wheels 39, and the surfaces of the two guide wheels 39 are provided with annular grooves adapted to the suction pipe 38. A blocking block 310 is provided in the through groove to block the annular grooves and reduce air leakage. The suction pipe 38 is provided to blow the sucked airflow upwards towards the dust, since the height of the dust may change during use. As the dust settles, the airflow is guided into the hollow ring 33 through the suction pipe 38 so that the negative pressure airflow passes directly above the dust. As the dust is consumed, the height decreases, and the height of the hollow ring 33 also decreases. One end of the suction pipe 38 is pulled downward by the hollow ring 33, while the other end remains in the outside air. The shape of the guide wheel 39 and the baffle block 310 reduce the gap and reduce air leakage, so that the negative pressure of the blower 21 can draw the airflow out of the hollow pipe 33, making it easier to blow up the dust.

[0037] An airflow compensation component 4 is connected to the side end of the air inlet pipe 24. The airflow compensation component 4 includes a conical cylinder 41. The large end of the conical cylinder 41 is connected to the air inlet pipe 24, and the small end is connected to the outside atmosphere. A trapezoidal side groove 42 for air intake is provided on the side wall of the conical cylinder 41. A valve block 43 is slidably arranged inside the conical cylinder 41 to control the opening of the trapezoidal side groove 42. The valve block 43 is kept normally closed by a spring 44. When the air inlet pipe of the blower 21 generates negative pressure, the flow control valve 26 controls the flow. When the flow is insufficient, air is drawn in through the airflow compensation component 4 to supplement it. When the flow in the flow control valve 26 is insufficient, the negative pressure generated by the blower 21 causes the valve port 43 to open. The opening size of the trapezoidal side groove 42 depends on the size of the negative pressure. In order to prevent dust in the air from affecting the content detection, an additional filter can be provided at the small end of the conical cylinder 41 so that the incoming compensation gas is filtered clean air.

[0038] The specific implementation method is as follows: Dust is poured into the housing 31, and the hollow ring 33 is placed on the dust. The flow control valves 26 are adjusted to regulate the content of dust particles of different sizes. Then, the blower 21 is run, and the negative pressure generated draws air from the housing 31. The housing 31 then introduces external air into the hollow ring 33 through the suction pipe 38, and blows it out from the inside of the hollow ring 33. The rotating rod 35 is blown and rotated, causing the dust to be lifted and then drawn into the blower 21 by the airflow and blown into the housing 11. The airflow carrying dust is filtered by the air filter. After filtration, the air is discharged through the connecting pipe 12. The air pressure before and after the air filter element 5 is detected by the first air pressure sensor 13 and the second air pressure sensor 23 to measure the airflow efficiency. The dust filtration status is measured by the first dust concentration sensor 14. The concentration and flow rate of dust of different particle sizes are measured by the second dust concentration sensor 14 and the flow control valve 26. The service life of the air filter element 5 under different ratios can be calculated. When the air filter element 5 is removed, the change in the reading of the air filter element 5 can also be obtained through the weighing pan 16 to calculate the dust adsorption amount.

[0039] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A quality inspection system for marine diesel engine filter elements, characterized in that: include Assembly module (1), which is used to assemble air filter (5), includes housing (11) and connecting pipe (12) that is connected to the outlet end of air filter (5), wherein a first pressure sensor (13) is provided in the middle section of the connecting pipe (12); The blower module (2) is used to deliver airflow containing dust into the housing (11), including a blower (21) and a second air pressure sensor (23) installed at the outlet of the blower (21). The blower (21) has an air inlet pipe (24) at its airflow inlet end. The end of the air inlet pipe (24) is provided with several branch pipes in parallel, and each branch pipe is provided with a flow control valve (26). Several dust generating modules (3) are connected to the corresponding pipes, including a box (31) for storing dust. The box (31) is provided with a hollow ring (33). The hollow ring (33) is piled on the top of the dust. The hollow ring (33) is provided with a through hole on the inner side. The hollow ring (33) is provided with a suction pipe (38) extending to the outside of the box (31). The upper surface of the hollow ring (33) is provided with an L-shaped rod (34). A rotating rod (35) is suspended below the L-shaped rod (34). The rotating rod (35) is provided with a driving device. The bottom of the rotating rod (35) is provided with a flexible strip (37) for disturbing the dust. The diameter of the dust particles in each of the dust generating modules (3) is different; The middle section of the connecting pipe (12) is provided with a first dust concentration sensor (14), and the inlet or outlet end of the flow control valve (26) is provided with a second dust concentration sensor (25).

2. The quality inspection system for marine diesel engine filter elements according to claim 1, characterized in that: The bottom of the housing (11) is provided with a lifting sliding base (15), which is driven by a lifting cylinder (17) to press the air filter (5) against the bottom of the connecting pipe (12), and a weighing pan (16) is provided between the output end of the lifting cylinder (17) and the sliding base (15).

3. The quality inspection system for marine diesel engine filter elements according to claim 1, characterized in that: The outlet of the blower (21) is connected to the housing (11) via an air outlet pipe (22).

4. The quality inspection system for marine diesel engine filter elements according to claim 1, characterized in that: The driving device for the rotating rod (35) is a spiral blade (36) disposed on the surface of the rotating rod (35), which is driven to rotate by airflow.

5. The quality inspection system for marine diesel engine filter elements according to claim 1, characterized in that: The top of the box (31) is provided with a top cover (32). A through groove is provided on one side of the top of the box (31). Two sets of guide wheels (39) are provided in the through groove. The suction pipe (38) is provided between the two guide wheels (39). The surfaces of the two guide wheels (39) are provided with annular grooves adapted to the suction pipe (38). A blocking block (310) for sealing the annular groove is provided in the through groove. The blocking block (310) is used to reduce air leakage.

6. The quality inspection system for marine diesel engine filter elements according to claim 1, characterized in that: An airflow compensation component (4) is connected to the side end of the air inlet pipe (24). The airflow compensation component (4) includes a conical cylinder (41). The large end of the conical cylinder (41) is connected to the air inlet pipe (24), and the small end is connected to the outside. A trapezoidal side groove (42) for air intake is provided on the side wall of the conical cylinder (41). A valve block (43) is slidably provided inside the conical cylinder (41) to control the opening degree of the trapezoidal side groove (42). The valve block (43) is kept normally closed by a spring (44).

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