Air permeability testing device of automobile filter

Abstract

The utility model discloses an air permeability testing device of an automobile filter, and relates to the technical field of automobile filter detection. The device comprises a base, a bracket is fixed on the upper surface of the base, and a positioner is fixed at one end of the bracket; the positioner comprises a positioning shell, and the positioning shell is fixedly connected with the support. A first hydraulic cylinder is fixed to one side of the positioning shell. An output shaft of the first hydraulic cylinder penetrates through the positioning shell. An adjusting block is fixed to an output shaft of the first hydraulic cylinder, first connecting plates are fixed to the two sides of the adjusting block, and transmission plates are rotationally connected into the first connecting plates. According to the utility model, under the action of the positioner, the device stably fixes the outer side of the automobile filter through the positioner, so that the situation that the filter shakes in the detection process, so that an airflow path in the filter is changed, and pressure and flow fluctuate is avoided, and large deviation of a measurement result is prevented; therefore, the detection accuracy is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of automotive filter testing technology, and in particular relates to an air permeability testing device for automotive filters. Background Technology

[0002] Automotive air filters are crucial components of the engine system. Their primary function is to filter impurities and contaminants from media such as air, engine oil, and fuel to protect engine components, extend their lifespan, and reduce emissions. The performance of the air filter directly affects the engine's intake and combustion efficiency, thus impacting the vehicle's power, fuel economy, and emissions performance. Air permeability is one of the filter's key performance indicators, directly related to its filtration efficiency and airflow capacity. Excessive air permeability may lead to poor filtration, failing to effectively block dust and particulate matter; while insufficient air permeability may increase intake resistance, affecting engine intake efficiency and power output. Therefore, accurately measuring and evaluating the air permeability of the filter is essential to ensuring its performance.

[0003] The utility model patent with publication number "CN221612661U" and titled "An Air Permeability Testing Device for an Automobile Filter" discloses a testing device. In the process of testing the air permeability of an automobile filter, a protective cover is driven by a third cylinder to move closer to the automobile filter and make its inner wall fit against the outer wall of the middle part of the automobile filter. This method is relatively basic and cannot guarantee that the automobile filter remains stable during the testing process. It is easy to cause the filter to shake during the testing process, and the airflow path inside it will change, thereby causing fluctuations in pressure and flow. These fluctuations will allow external gas to flow in, resulting in a large deviation in the measurement results. Utility Model Content

[0004] The purpose of this invention is to provide a permeability testing device for automotive filters. Through the action of the locator, the device stably fixes the outer side of the automotive filter, avoiding changes in the internal airflow path caused by the filter shaking during the testing process, which would lead to fluctuations in pressure and flow rate. This prevents large deviations in the measurement results, thus ensuring the accuracy of the test and solving existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an air permeability testing device for automotive filters, including a base, a bracket fixed on the upper surface of the base, and a locator fixed at one end of the bracket;

[0006] The positioner includes a positioning shell, which is fixedly connected to the bracket.

[0007] A first hydraulic cylinder is fixed to one side of the positioning shell, and the output shaft of the first hydraulic cylinder passes through the positioning shell.

[0008] An adjusting block is fixed to the output shaft of the first hydraulic cylinder, and a first connecting plate is fixed to both sides of the adjusting block. A transmission plate is rotatably connected inside the first connecting plate.

[0009] The transmission plate is rotatably connected to a second connecting plate at the end away from the first connecting plate, and a movable plate is fixed at one end of the second connecting plate.

[0010] A connecting shell is fixed to the bottom of the positioning shell, and limit plates are fixed to both sides of the bottom of the connecting shell;

[0011] An adjustment shell is fixed to one end of the movable plate;

[0012] The inner wall of the movable plate is fixed with a clamp.

[0013] The present invention is further configured such that: an extension plate is fixed on both sides of the base, and a second hydraulic cylinder is fixed on the upper surface of the extension plate;

[0014] An adjusting plate is fixed to the output shaft of the second hydraulic cylinder.

[0015] The present invention is further configured such that a support block is fixed to the top of the adjusting plate;

[0016] A third hydraulic cylinder is fixed to the upper surface of the base, and a test plate is fixed to the output shaft of the third hydraulic cylinder.

[0017] The present invention is further configured such that: a plurality of air inlet pipes are fixed on the upper surface of the test plate, and an air outlet pipe is fixed in the center of the test plate.

[0018] The present invention is further configured such that: a water tank is fixed to one end of the air outlet pipe, and a drain pipe is fixed to one end of the water tank.

[0019] The present invention is further configured such that: a sealing tube is fixed on the side of the air inlet pipe away from the test plate, and a plurality of sealing strips are fixed on the outer ring of the sealing tube;

[0020] Both the sealing strip and the sealing tube are made of rubber.

[0021] The present invention is further configured such that: a groove is opened on the surface of the limiting plate, and sliders are fixed on both sides of the inner wall of the adjusting shell;

[0022] The slider is slidably connected to the groove.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model utilizes a locator to stably fix the outer side of the automotive filter, preventing fluctuations in pressure and flow caused by changes in the internal airflow path due to filter shaking during testing. This prevents significant deviations in measurement results and ensures the accuracy of the test.

[0025] 2. This utility model uses the test plate to press the test plate downwards. When the test plate is completely pressed on the top of the filter, the sealing strip further seals the sealing tube and the inner wall of the air inlet, preventing air leakage during the test and preventing misjudgment of the filter's air permeability, which would affect the evaluation of the filter's performance.

[0026] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an air permeability testing device for an automotive filter according to the present invention.

[0029] Figure 2 This is a top-view structural diagram of the present invention.

[0030] Figure 3 This is a side view structural diagram of the present invention.

[0031] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of point A in the middle.

[0032] Figure 5 This is a schematic diagram of the test plate structure of this utility model.

[0033] Figure 6 This is a schematic diagram of the positioner structure of this utility model.

[0034] Figure 7 For the present utility model Figure 6 Enlarged view of section B in the middle.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Base, 2-Bracket, 3-Positioner, 4-Positioning shell, 5-First hydraulic cylinder, 6-Adjusting block, 7-First connecting plate, 8-Transmission plate, 9-Second connecting plate, 10-Modible plate, 11-Connecting shell, 12-Limiting plate, 13-Adjusting shell, 14-Clamping plate, 15-Extension plate, 16-Second hydraulic cylinder, 17-Adjusting plate, 18-Support block, 19-Third hydraulic cylinder, 20-Test plate, 21-Inlet pipe, 22-Outlet pipe, 23-Water tank, 24-Drain pipe, 25-Sealing pipe, 26-Sealing strip, 27-Slide groove, 28-Slider. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0039] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model. Specific Implementation Example 1

[0041] Please see Figure 1-7 This utility model is a permeability testing device for automotive filters, including a base 1, a bracket 2 fixed on the upper surface of the base 1, and a locator 3 fixed at one end of the bracket 2; the locator 3 includes a positioning shell 4, which is fixedly connected to the bracket 2; a first hydraulic cylinder 5 is fixed on one side of the positioning shell 4, and the output shaft of the first hydraulic cylinder 5 passes through the positioning shell 4; an adjusting block 6 is fixed to the output shaft of the first hydraulic cylinder 5, and a first connecting plate 7 is fixed on both sides of the adjusting block 6; a transmission plate 8 is rotatably connected inside the first connecting plate 7; a second connecting plate 9 is rotatably connected to the end of the transmission plate 8 away from the first connecting plate 7, and a movable plate 10 is fixed at one end of the second connecting plate 9; a connecting shell 11 is fixed to the bottom of the positioning shell 4, and limit plates 12 are fixed on both sides of the bottom of the connecting shell 11; an adjusting shell 13 is fixed to one end of the movable plate 10; and a clamping plate 14 is fixed to the inner wall of the movable plate 10.

[0042] Specifically, the surface of the limiting plate 12 has a sliding groove 27, and both sides of the inner wall of the adjusting shell 13 are fixed with sliders 28; the sliders 28 are slidably connected to the sliding groove 27.

[0043] The operation process of this embodiment is as follows: When using this device, the bottom of the car filter to be tested is placed on the support block 18, and the third hydraulic cylinder 19 is opened, causing the output shaft of the third hydraulic cylinder 19 to drive the test plate 20 at one end downward. Several air inlet pipes 21 on the surface of the test plate 20 are aligned with the inlet of the car filter. Clean water is poured into the water tank 23 until the water tank 23 is full. Then the first hydraulic cylinder 5 is opened, and the output shaft of the first hydraulic cylinder 5 is retracted, driving the adjustment block 6 at one end to move. When the adjustment block 6 moves in the direction of the first hydraulic cylinder 5, the transmission plates 8 on both sides of the adjustment block 6 drive the movable plate 10 at the other end to move towards the center of the base 1. The clamping plate 14 on one side of the movable plate 10 also moves towards the center of the base 1. When plate 14 moves simultaneously, the car filter can be fixed in place. After the car filter is fixed, the other end of the air intake pipe 21 is connected to the air pump, and air is introduced into the air intake pipe 21. The air intake pipe 21 then introduces air into the car filter. At this time, the gas is discharged through the air outlet pipe 22 and enters the water tank 23. The water in the water tank 23 is discharged from the drain pipe 24 after being squeezed by the gas. The air permeability of the car filter can be detected by the air intake and drainage volume. The device uses the positioner 3 to stably fix the outside of the car filter, avoiding the situation where the airflow path inside the filter changes due to shaking during the test, causing fluctuations in pressure and flow, and preventing large deviations in the measurement results, thereby ensuring the accuracy of the test. Specific Implementation Example 2

[0045] Please see Figure 1-4 Based on the first specific embodiment, an extension plate 15 is fixed on both sides of the base 1, and a second hydraulic cylinder 16 is fixed on the upper surface of the extension plate 15; an adjustment plate 17 is fixed on the output shaft of the second hydraulic cylinder 16; a support block 18 is fixed on the top of the adjustment plate 17; a third hydraulic cylinder 19 is fixed on the upper surface of the base 1, and a test plate 20 is fixed on the output shaft of the third hydraulic cylinder 19; several air inlet pipes 21 are fixed on the upper surface of the test plate 20, and an air outlet pipe 22 is fixed in the center of the test plate 20.

[0046] Specifically, a water tank 23 is fixed to one end of the air outlet pipe 22, and a drain pipe 24 is fixed to one end of the water tank 23.

[0047] Furthermore, a sealing tube 25 is fixed to the side of the air intake pipe 21 away from the test plate 20, and several sealing strips 26 are fixed to the outer ring of the sealing tube 25; both the sealing strips 26 and the sealing tube 25 are made of rubber material.

[0048] The operation process of this embodiment is as follows: when the air intake pipe 21 is aligned with the air intake port on the upper side of the car filter, the sealing pipe 25 is inserted into the air intake port, and then the third hydraulic cylinder 19 is opened to press the test plate 20 downward. When the test plate 20 is completely pressed on the top of the filter, the sealing strip 26 further seals the sealing pipe 25 and the inner wall of the air intake port to prevent air leakage during the test and prevent misjudgment of the air permeability of the filter, which would affect the evaluation of the filter performance.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A permeability testing device for an automotive filter, comprising a base (1), characterized in that: A bracket (2) is fixed on the upper surface of the base (1), and a locator (3) is fixed at one end of the bracket (2); The positioner (3) includes a positioning shell (4), which is fixedly connected to the bracket (2); A first hydraulic cylinder (5) is fixed on one side of the positioning shell (4), and the output shaft of the first hydraulic cylinder (5) passes through the positioning shell (4). The output shaft of the first hydraulic cylinder (5) is fixed with an adjusting block (6), and the adjusting block (6) is fixed with a first connecting plate (7) on both sides. The first connecting plate (7) is rotatably connected with a transmission plate (8). The transmission plate (8) is rotatably connected to a second connecting plate (9) at the end away from the first connecting plate (7), and a movable plate (10) is fixed at one end of the second connecting plate (9); The bottom of the positioning shell (4) is fixed with a connecting shell (11), and the bottom sides of the connecting shell (11) are fixed with limit plates (12); An adjustment shell (13) is fixed to one end of the movable plate (10); The inner wall of the movable plate (10) is fixed with a clamping plate (14).

2. The air permeability testing device for an automotive filter according to claim 1, characterized in that, Both sides of the base (1) are fixed with extension plates (15), and a second hydraulic cylinder (16) is fixed on the upper surface of the extension plates (15); The output shaft of the second hydraulic cylinder (16) is fixed with an adjusting plate (17).

3. The air permeability testing device for an automotive filter according to claim 2, characterized in that, A support block (18) is fixed to the top of the adjusting plate (17); A third hydraulic cylinder (19) is fixed on the upper surface of the base (1), and a test plate (20) is fixed on the output shaft of the third hydraulic cylinder (19).

4. The air permeability testing device for an automotive filter according to claim 3, characterized in that, The test plate (20) has several air inlet pipes (21) fixed on its upper surface and an air outlet pipe (22) fixed in the center of its center.

5. The air permeability testing device for an automotive filter according to claim 4, characterized in that, A water tank (23) is fixed to one end of the air outlet pipe (22), and a drain pipe (24) is fixed to one end of the water tank (23).

6. The air permeability testing device for an automotive filter according to claim 5, characterized in that, A sealing tube (25) is fixed on the side of the air inlet pipe (21) away from the test plate (20), and a number of sealing strips (26) are fixed on the outer ring of the sealing tube (25); Both the sealing strip (26) and the sealing tube (25) are made of rubber.

7. The air permeability testing device for an automotive filter according to claim 1, characterized in that, The limiting plate (12) has a sliding groove (27) on its surface, and the adjusting shell (13) has sliders (28) fixed on both sides of its inner wall; The slider (28) is slidably connected to the groove (27).

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