Device for detecting air permeability of filter paper of vehicle filter

Abstract

The filter paper air permeability detection device comprises a base, a supporting column is fixedly connected to the circle center of the top of the base, a tray is fixedly connected to the top of the supporting column, a plurality of first lifting push cylinders are fixedly installed at the top of the tray, and a supporting frame is fixedly installed at the tops of the first lifting push cylinders through stand columns; through the arrangement of the multiple sets of material clamping frames, filter paper with different layer numbers, folding angles, materials and gap numbers can be flexibly placed, factors influencing the air permeability are comprehensively covered, the detection dimension is enriched, accurate detection data are obtained, meanwhile, automatic overturning feeding is achieved through cooperation of the pushing ring plate and other assemblies, the detection efficiency is improved, and the labor intensity of workers is reduced. And through cooperation of the inclined plane sliding block and the inclined plane block and cooperation of the cover frame and the sealing rubber strip, self-adaptive clamping and double sealing of the frame plate are realized, and the sealing performance of the detection environment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of detecting the air permeability of filter paper for filters, and specifically to a device for detecting the air permeability of filter paper for vehicle filters. Background Art

[0002] The filter paper for vehicle filters is a core component of vehicle filters and is crucial in systems such as engines and air conditioners. Its main function is to filter impurities, ensure the purity of the gas or liquid entering the system, thereby protecting system components, reducing the failure rate, and extending the service life of various system components of the vehicle. The manufacturing materials include wood pulp fibers, glass fiber, and synthetic fibers, etc. Different materials have their own characteristics, and the performance requirements of the filter paper for vehicle filters are relatively high. It needs to have high filtration ability, be able to filter impurities with specific particle sizes according to the type of filter, and at the same time have good air permeability to ensure the smooth passage of fluid and reduce pressure loss.

[0003] For example, in the Chinese patent with the application number 2014103908564, specifically a cork paper air permeability detector, a cylinder can be used to drive a frame to move in a direction perpendicular to the vertical plate part, so as to change the position of the cork paper placed on the glass plate. The purpose is to measure the air permeability on both sides of the measured paper section, avoid cutting the measured cork paper section longitudinally in the middle and measuring it in two times, and improve the detection efficiency.

[0004] However, the above patent content cannot comprehensively cover all factors affecting air permeability, is difficult to simulate different usage scenarios, the obtained detection data is not comprehensive and accurate enough, and cannot provide sufficient basis for evaluating the performance of filter paper. There are obvious defects in the depth and breadth of filter paper performance evaluation. At the same time, its cork paper is not sealed, it is difficult to ensure the tightness of the detection environment, and it is easily interfered by external factors, affecting the accuracy of the detection results.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for detecting the air permeability of filter paper for vehicle filters to solve the problems mentioned in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A device for detecting the air permeability of filter paper for vehicle filters, including a base, a support column is fixedly connected to the center of the top of the base, and a tray is fixedly connected to the top of the support column. On the top of the tray, a plurality of lifting push cylinders I are fixedly installed, and a support frame is fixedly installed on the top of the lifting push cylinders I through columns. A plurality of feeding components are arranged on the side wall of the tray in a circular array centered on the center of the tray;

[0008] The feeding component includes a frame fixed to the side wall of the tray. The inner side of the frame is movably connected with a turning frame through a bearing. The inner side of the turning frame is rotatably connected with a connecting rod. The outer side of the turning frame is fixedly connected with a supporting plate. Symmetrically fixed on one side of the supporting plate away from the turning frame are partition plates. The feeding component further includes a material clamping frame fixedly connected to the side walls of the partition plates and the supporting plate.

[0009] Further, a sliding groove is formed in the inner side wall of the material clamping frame, and a pressing seal is slidably connected in the sliding groove. Two through grooves communicating with the sliding groove are formed in the outer side of the material clamping frame away from the supporting plate, and inclined plane sliders are slid in the through grooves. The inclined plane sliders are fixedly connected with the pressing seal. A tension spring is fixedly connected in the sliding groove, and one end of the tension spring is fixedly connected with the pressing seal.

[0010] Multiple groups of mounting grooves are formed in the inner side wall of the material clamping frame, and pneumatic suction cups are installed in the mounting grooves. One end of each pneumatic suction cup is communicated with an external compressed air source through a pipeline.

[0011] Further, a clamping mechanism is arranged at the outer end of the support frame. The clamping mechanism includes a cover frame fixed to the end of the support frame, and inclined plane blocks matched with the inclined plane sliders are fixedly connected to the four corners of the bottom of the cover frame.

[0012] Further, a baffle is fixedly connected to one side of the cover frame away from the support frame. Multiple groups of wing type air flow sensors are fixedly installed on the side wall of the baffle. The top of the tray is fixedly installed with air blowing boxes arranged in an annular array with the center of the tray as the center. The side wall of each air blowing box is communicated with an external air blowing mechanism through a conduit.

[0013] Further, a pushing ring plate is sleeved and slidably connected to the outer side of the support column. A lifting push cylinder II is fixedly installed on the top of the base, and the top end of the lifting push cylinder II is fixedly connected with the pushing ring plate.

[0014] Further, a push rod is fixedly connected to the top end of the pushing ring plate. The end of the connecting rod away from the turning frame is rotatably connected with a pushing frame. The top end of the push rod is fixedly connected with the bottom of the pushing frame.

[0015] Further, sealing rubber strips are installed on the outer side of the pressing seal, the bottom of the cover frame and the side walls of the partition plates. A display panel is installed on one side of the top of the base.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When the present invention is in use, in terms of the intelligence of the detection process, the gas blown out by the blower box precisely passes through the filter paper of the filter, and the vane type air flow sensor installed on the side wall of the baffle efficiently obtains the gas flow data and transmits it to the computer terminal. The received actual air permeability data is deeply compared with the preset stored air permeability data of the filter paper of the filter. Moreover, the preset qualified air permeability ratio (such as 98%) is not fixed, but can be flexibly adjusted according to complex factors such as the type of filter paper of the filter, the number of laminated layers, and different application scenarios. This setting fully considers the diversity of filter paper in actual production and use, greatly improving the pertinence and accuracy of the detection results.

[0018] In terms of the scientific nature of the result determination, when the actual air permeability is higher than the corresponding ratio of the preset stored air permeability of the filter paper of the filter, it is determined that the air permeability of the filter paper in the card material frame 506 is qualified, which means that the filter paper can effectively ensure gas circulation and the filtering performance meets the standard in the actual working environment. On the contrary, it is determined that the air permeability of the filter paper is unqualified, and a prompt text message is automatically generated and sent to the display panel. The display panel will clearly display the information of the unqualified filter paper in the card material frame with the corresponding number, facilitating the accurate positioning of unqualified products, greatly improving the quality control efficiency in the production process, and effectively preventing unqualified products from flowing into subsequent links.

[0019] When the air permeability detection of the filter paper of the filter is completed, under the elastic force of the tension spring, the pressing seal automatically releases the contact with the frame plate installed with the filter paper of the filter, facilitating the replacement of the frame plate installed with the filter paper of the filter, quickly carrying out the air permeability detection of other types, effectively improving the use efficiency of the equipment, and meeting diverse detection requirements.

[0020] 2. Different laminated layers of filter paper of the filter can be placed in different card material frames of the present invention. By changing the number of layers, the air permeability performance of the filter paper under different use scenarios can be simulated. Filter papers with different folding angles can also be placed to explore the influence of the folding method of the filter paper on the air permeability. Even filter papers of different materials and different void numbers can be detected, comprehensively covering all factors that may affect the air permeability, so as to obtain more comprehensive and accurate detection data, greatly enriching the dimension and depth of the air permeability detection of the filter paper of the filter, and providing a more solid basis for the performance evaluation of the filter paper.

[0021] 3. The present invention also realizes automatic flipping and feeding through the coordinated operation of the pushing ring plate, the push rod, and the feeding component, greatly improving the detection efficiency. Through the adaptive contact between the inclined plane slider and the inclined plane block, the pressing seal is controlled to adaptively clamp and preliminarily seal the frame plate installed with the filter paper of the filter. The sealing rubber strip outside the cover frame and the pressing seal cooperate with each other to further realize the automatic sealing of the frame plate installed with the filter paper of the filter, providing double guarantees for the tightness of the detection environment, providing stable and reliable detection conditions for the air permeability detection, and effectively avoiding interference from external factors. Brief Description of the Drawings

[0022] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings;

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the tray structure in the present invention;

[0025] Figure 3 It is a schematic diagram of the material feeding component structure in the present invention;

[0026] Figure 4 It is a schematic diagram of the pneumatic suction cup structure in the present invention;

[0027] Figure 5 It is a schematic diagram of the push rod structure in the present invention;

[0028] Figure 6 It is a schematic diagram of the inclined plane block structure in the present invention;

[0029] Figure 7 It is a schematic diagram of the support frame structure in the present invention;

[0030] Figure 8 It is a schematic diagram of the first lifting push cylinder in the present invention;

[0031] Figure 9 It is a schematic diagram of the pressing seal strip in the present invention.

[0032] Reference numerals: 1, base; 2, tray; 3, the first lifting push cylinder; 4, support frame; 501, frame; 502, flipping frame; 503, connecting rod; 504, pushing frame; 505, supporting plate; 506, material clamping frame; 6, partition board; 7, pressing seal strip; 8, inclined plane slider; 901, cover frame; 902, inclined plane block; 10, baffle; 11, air blowing box; 12, pneumatic suction cup; 13, pushing ring plate; 14, the second lifting push cylinder; 15, push rod. Detailed Embodiments

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1: As Figures 1-9As shown in the figure, a device for detecting the air permeability of filter paper for vehicle filters includes a base 1. At the center of the top of the base 1, a support column is fixedly connected, and at the top of the support column, a tray 2 is fixedly connected. On the top of the tray 2, a plurality of lifting push cylinders 1 are fixedly installed. The top of the lifting push cylinder 1 is fixedly installed with a support frame 4 through a column. On the side wall of the tray 2, a plurality of feeding components are arranged in a circular array centered on the center of the tray 2;

[0035] The feeding component includes a frame 501 fixed on the side wall of the tray 2. Inside the frame 501, a turning frame 502 is movably connected through a bearing. Inside the turning frame 502, a connecting rod 503 is rotatably connected. On the outside of the turning frame 502, a support plate 505 is fixedly connected. On the side of the support plate 505 away from the turning frame 502, partitions 6 are symmetrically fixedly installed. The feeding component further includes a card frame 506 fixedly connected to the side walls of the partition 6 and the support plate 505. The card frame 506 is provided with different numbers for marking the filter paper of the filter placed in different card frames 506. The card frame 506 is used to carry the frame plate installed with the filter paper.

[0036] A pushing ring plate 13 is sleeved and slidably connected on the outside of the support column. On the top of the base 1, a lifting push cylinder 2 14 is fixedly installed, and the top end of the lifting push cylinder 2 14 is fixedly connected to the pushing ring plate 13. The top end of the pushing ring plate 13 is fixedly connected to a push rod 15. One end of the connecting rod 503 away from the turning frame 502 is rotatably connected to a pushing frame 504. The top end of the push rod 15 is fixedly connected to the bottom of the pushing frame 504;

[0037] On the inner side wall of the card frame 506, a plurality of installation grooves are opened, and pneumatic suction cups 12 are installed in the installations. The pneumatic suction cups 12 are used to adsorb and fix the frame plate installed with the filter paper to ensure that the frame plate installed with the filter paper will not fall during the rotation process. One end of the pneumatic suction cup 12 is connected to an external compressed air source through a pipeline.

[0038] During specific setting, the frame plate installed with the filter paper is inserted into the corresponding card frame 506. The pneumatic suction cup 12 adsorbs and fixes the side wall of the frame installed with the filter paper under the action of the external compressed air source. Then, the lifting push cylinder 2 14 is used to drive the pushing ring plate 13 to move up and down on the outside of the support column, and further drive the push rod 15 and the pushing frame 504 to descend synchronously. During the descent of the pushing frame 504, the turning frame 502 is pulled to flip relative to the frame 501 through the connecting rod 503.

[0039] During the flipping process, the flipping frame 502 drives the pallet 505 and the frame plate installed with filter paper in the material clamping frame 506 to flip synchronously. When the pushing ring plate 13 descends to the specified height, at this time, the frame plate installed with filter paper and the material clamping frame 506 flip 90 degrees synchronously, and after the partition plate 6 flips 90 degrees synchronously, it contacts the side wall of the air blowing port of the air blowing box 11 through the sealing rubber strip on the side wall.

[0040] Embodiment 2: The inner side wall of the material clamping frame 506 is provided with a sliding groove, and a pressing seal 7 is slidably connected in the sliding groove. Two through grooves communicating with the sliding groove are opened on the outer side of the material clamping frame 506 away from the pallet 505, and an inclined plane slider 8 is slid in the through groove. The inclined plane slider 8 is fixedly connected with the pressing seal 7. A tension spring is fixedly connected in the sliding groove, and one end of the tension spring is fixedly connected with the pressing seal 7. A clamping mechanism is arranged at the outer end of the support frame 4;

[0041] The clamping mechanism includes a cover frame 901 fixed at the end of the support frame 4, and inclined plane blocks 902 matched with the inclined plane sliders 8 are fixedly connected to the four corners of the bottom of the cover frame 901. Sealing rubber strips are installed on the outer side of the pressing seal 7, the bottom of the cover frame 901, and the side wall of the partition plate 6. A display panel is installed on one side of the top of the base 1.

[0042] A baffle 10 is fixedly connected to one side of the cover frame 901 away from the support frame 4. A plurality of vane type air flow sensors are fixedly installed on the side wall of the baffle 10. The principle of the vane type air flow sensor is that when gas flows through, the gas pushes the vane (measurement piece) to swing around the axis. A potentiometer is connected to the rotation axis of the vane. The rotation angle of the vane is proportional to the intake air volume. The potentiometer converts the rotation angle of the vane into a change in resistance value, and then into a measurable electrical signal to reflect the size of the gas flow;

[0043] It should be explained here that the vane type air flow sensor is an existing structure, and equipment with the same function can also be used for replacement. The air blowing boxes 11 are fixedly installed on the top of the tray 2 in an annular array centered on the center of the tray 2. The side walls of the air blowing boxes 11 are connected to an external air blowing mechanism through conduits.

[0044] Specifically, when multiple frame plates installed with filter paper are flipped 90 degrees synchronously under the action of the pushing ring plate 13, the push rod 15, and the feeding component, at this time, the lifting push cylinder 1 is started to further drive the support frame 4, the cover frame 901, and the baffle 10 to descend synchronously. During the descending process of the cover frame 901, the multiple inclined plane blocks 902 at the bottom thereof first contact the corresponding inclined plane sliders 8. Under the action of the inclined plane blocks 902 and the inclined plane sliders 8, the pressing seal 7 is pushed out from the inside of the material clamping frame 506 and presses against the side wall of the frame plate installed with filter paper.

[0045] After the cover frame 901 contacts the end of the card material frame 506, at this time, the pressing seal 7 and the cover frame 901 use the sealing rubber strip to tightly seal the outer side wall of the frame plate installed with the filter paper, so that under the action of the cover frame 901, the pressing seal 7 and the sealing rubber strip, the frame plate of the filter paper is comprehensively sealed, avoiding gas from overflowing from other gaps and affecting the accurate detection of the air permeability of the filter paper. The gas blown out by the air blowing box 11 passes through the filter paper and is obtained by the vane type air flow sensor installed on the side wall of the baffle 10 and sent to the computer terminal electrically connected externally. After receiving the air permeability of the gas, the computer terminal compares it with the air permeability data of the filter paper preset and stored:

[0046] When the actual air permeability is higher than 98% of the preset and stored air permeability of the filter paper (and 98% is set manually and can be adjusted according to the type and number of stacked layers of the filter paper), it means that the air permeability of the filter paper in the card material frame 506 is qualified;

[0047] When the actual air permeability is not higher than 98% of the preset and stored air permeability of the filter paper, it means that the air permeability of the filter paper in the card material frame 506 is unqualified. A prompt text message is generated and sent to the display panel, and the display panel displays the unqualified filter paper in the card material frame 506 with the corresponding number for easy removal.

[0048] After the air permeability of the filter paper is detected, the cover frame 901 drives the inclined plane block 902 to rise, and the pressing seal 7 releases the contact with the frame plate installed with the filter paper under the elastic force of the tension spring. Subsequently, the frame plate installed with the filter paper is synchronously and reversely flipped 90 degrees under the action of the pushing ring plate 13, the push rod 15 and the feeding assembly. Then, the pneumatic suction cup 12 releases the adsorption and fixation of the frame plate installed with the filter paper, so as to replace the frame plate installed with the filter paper and perform other types of air permeability detection.

[0049] Combining Embodiment 1 and Embodiment 2, it can be seen that the present invention conducts a more comprehensive detection of the air permeability of the filter paper. That is, the present invention is provided with multiple groups of card material frames 506, and different numbers of stacked filter papers, or filter papers folded at different angles, or filter papers with different materials and different numbers of voids can be placed in each card material frame 506, with extremely high flexibility, further enriching the detection of the air permeability of the filter paper.

[0050] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A vehicle filter paper air permeability detection device, comprising a base (1), characterized in that, At the center of the top of the base (1), a support column is fixedly connected, and at the top of the support column, a tray (2) is fixedly connected. On the top of the tray (2), a plurality of lifting push cylinders one (3) are fixedly installed. The top of the lifting push cylinder one (3) is fixedly installed with a support frame (4) through a column. On the side wall of the tray (2), a plurality of feeding components are arranged in a circular array centered on the center of the tray (2); The feeding component includes a frame (501) fixed on the side wall of the tray (2). Inside the frame (501), a turning frame (502) is movably connected through a bearing. Inside the turning frame (502), a connecting rod (503) is rotatably connected. On the outside of the turning frame (502), a support plate (505) is fixedly connected. On the side of the support plate (505) away from the turning frame (502), partitions (6) are symmetrically and fixedly installed. The feeding component further includes a material clamping frame (506) fixedly connected to the side walls of the partitions (6) and the support plate (505); 2. The air permeability detection device for vehicle filters according to claim 1, characterized in that, On the inner side wall of the material clamping frame (506), a chute is opened, and a pressing seal (7) is slidably connected in the chute. On the outside of the material clamping frame (506) away from the support plate (505), two through grooves communicating with the chute are opened, and inclined plane sliders (8) are slid in the through grooves. The inclined plane sliders (8) are fixedly connected to the pressing seal (7). A tension spring is fixedly connected in the chute, and one end of the tension spring is fixedly connected to the pressing seal (7); On the inner side wall of the material clamping frame (506), a plurality of installation grooves are opened, and pneumatic suction cups (12) are installed in the installations. One end of the pneumatic suction cup (12) is communicated with an external compressed air source through a pipeline; 3. The air permeability detection device for vehicle filters according to claim 1, characterized in that, At the outer end of the support frame (4), a clamping mechanism is arranged. The clamping mechanism includes a cover frame (901) fixed at the end of the support frame (4), and at the four corners of the bottom of the cover frame (901), inclined plane blocks (902) matched with the inclined plane sliders (8) are fixedly connected; 4. The vehicle filter paper air permeability detection device according to claim 3, characterized in that, On the side of the cover frame (901) away from the support frame (4), a baffle (10) is fixedly connected. On the side wall of the baffle (10), a plurality of vane type air flow sensors are fixedly installed. On the top of the tray (2), a blowing box (11) is fixedly installed in a circular array centered on the center of the tray (2). The side wall of the blowing box (11) is communicated with an external blowing mechanism through a conduit; 5. The air permeability detection device for vehicle filter paper according to claim 1, characterized in that, A pushing ring plate (13) is sleeved and slidably connected on the outside of the support column. On the top of the base (1), a lifting push cylinder two (14) is fixedly installed, and the top end of the lifting push cylinder two (14) is fixedly connected to the pushing ring plate (13); 6. The air permeability detection device for vehicle filter paper according to claim 5, characterized in that, At the top end of the pushing ring plate (13), a push rod (15) is fixedly connected. The end of the connecting rod (503) away from the turning frame (502) is rotatably connected to a pushing frame (504), and the top end of the push rod (15) is fixedly connected to the bottom of the pushing frame (504); 7. The air permeability detection device for vehicle filters according to claim 2, characterized in that Sealing rubber strips are installed on the outside of the pressing seal (7), the bottom of the cover frame (901), and the side walls of the partitions (6). On one side of the top of the base (1), a display panel is installed.

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