A papermaking felt wear resistance testing device

Abstract

The invention discloses a papermaking felt wear resistance test device, and the invention relates to the technical field of papermaking felt testing. The papermaking felt wear resistance test device, through the arrangement of a detection box and a filter plate, can reflect the surface wear and surface fluff shedding of the felt body during the test by monitoring the descending height of the arc frame and the insertion depth of the conductive plug plate during the friction test of the felt body, effectively improving the detection accuracy of the device, and at the same time, the filter plate can be automatically turned over during periodic detection to complete the collection of fluff and impurities, which can ensure continuous operation while improving the maintenance convenience of the device.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking felt testing, in particular to a papermaking felt wear resistance testing device. Background Art

[0002] Papermaking felt is a base fabric made of synthetic fiber with a coarse and thin mesh, then covered with a mixed fiber net of synthetic fiber and a small amount of wool, and then subjected to acupuncture, chemical treatment, resin finishing and heat setting. It is mainly used in the papermaking industry for paper forming and transportation; it can be divided into wet felt, upper felt and dry felt according to the position on the papermaking machine; papermaking felt needs to be sampled for wear resistance test after production, referring to the Chinese patent, "A wear resistance detection device for warp knitted fabric" with announcement number "CN116296749B", which points out that the existing detection equipment does not have the function of simulating the environment and only has the problem of detecting a single wear resistance; however, the above equipment still has the defect of poor detection accuracy, and cannot judge the integrity and shedding of the surface fluff of the fabric during the wear resistance test. In this regard, we propose a papermaking felt wear resistance test device to solve the above problem. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a papermaking felt wear resistance testing device, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A papermaking felt wear resistance testing device, comprising a machine body, both sides of the machine body are rotatably connected with conveying rollers for conveying the felt body to be tested, and a control panel is fixed on the outside of the machine body;

[0005] A grinding roller is rotatably connected to the middle of the inner side of the machine body. The grinding roller is used to perform wear resistance test on the felt body. A pressure regulating assembly is provided above the felt body to adjust the contact area between the felt body and the grinding roller during transportation.

[0006] An image scanning module and a temperature detection module are respectively provided inside the machine body, which are used to perform image scanning and temperature detection on the polished blanket body, respectively, to judge the wear effect of the blanket body;

[0007] A collecting box is fixed inside the machine body. The collecting box is installed directly below the grinding roller and a testing box is installed inside the collecting box. A negative pressure device is connected to the outside of the testing box to collect fluff and impurities generated during the grinding process. An arc frame is installed inside the testing box for sliding up and down, and a reversible filter plate is installed inside the arc frame. Multiple testing frames are fixed inside the testing box, and a conductive plug plate compatible with the testing frame is installed at the bottom of the arc frame. The arc frame can be pressurized as the filter plate is blocked and retracted into the testing box by negative pressure. The degree of surface wear of the blanket body during the test is determined by the descending height of the arc frame.

[0008] Preferably, a plurality of sliders are fixed on both sides of the arc frame, the sliders are slidably connected to the inner wall of the detection box, reset springs are fixedly installed around the bottom of the arc frame and between the inner wall of the detection box, rotating shafts are fixedly installed in the middle of both sides of the filter plate, and a motor is fixedly installed on the outer side of the arc frame to drive the filter plate to flip inside the arc frame.

[0009] Preferably, a conical groove is opened inside the collecting box, the detection box is fixed to the inner bottom of the conical groove, a connecting pipe is installed on the outer side of the detection box, and the end of the connecting pipe is connected to the negative pressure device.

[0010] Preferably, a scraper is slidably connected to the side of the collection box up and down, and a plurality of supporting springs are fixedly installed on the bottom of the scraper.

[0011] Preferably, a cleaning component is provided inside the detection box, and the cleaning component is used to clean the fluff and impurities remaining on the surface of the filter plate.

[0012] Preferably, the cleaning assembly includes a cleaning frame, which is slidably installed below the arc frame, and a pushing cylinder is provided at the bottom of the arc frame. The piston end of the pushing cylinder is fixedly connected to the bottom of the cleaning frame, and is used to drive the cleaning frame to move downward when the filter plate is flipped. A plurality of cleaning shafts are rotatably connected inside the cleaning frame, and a plurality of transmission belts are connected between the plurality of cleaning shafts, and a plurality of elastic cleaning scrapers are fixedly installed on the outer side of the transmission belt, and the elastic cleaning scrapers are used to clean the surface of the filter plate.

[0013] Preferably, telescopic rods are connected between both sides of the bottom of the cleaning rack and the interior of the detection box.

[0014] Preferably, a marking module is fixedly installed inside the body.

[0015] Preferably, the pressure regulating assembly includes a positioning plate frame, which is fixedly installed inside the machine body, and the bottom of the positioning plate frame is slidably connected to a middle layer plate, a pressure detector is fixed at the bottom center position of the middle layer plate, and a plurality of connecting rods are installed on the outside of the pressure detector, and a bottom pressure frame is provided below the middle layer plate, and the bottom pressure frame is fixedly connected to a plurality of connecting rods, and pressure rollers are rotatably connected to both sides of the bottom of the bottom pressure frame.

[0016] Preferably, limiting slide bars are fixedly installed around the top surface of the middle layer plate, the limiting slide bars all penetrate the positioning plate frame and are slidably connected thereto, the ends of the limiting slide bars are sleeved with spring bodies, a hydraulic cylinder is fixedly installed inside the positioning plate frame, and the piston end of the hydraulic cylinder is fixedly connected to the middle layer plate.

[0017] The present invention provides a papermaking felt wear resistance testing device. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The papermaking felt wear resistance test equipment, through the setting of the detection box and the filter plate, during the friction detection of the felt body, reflects the surface wear and surface fluff shedding of the felt body during the test through the descending height of the arc frame and the insertion depth of the conductive plug plate, which effectively improves the detection accuracy of the equipment. At the same time, the filter plate can be automatically flipped during periodic detection to complete the collection of fluff and impurities, which can ensure continuous operation and improve the maintenance convenience of the equipment.

[0019] (2) The papermaking felt wear resistance test equipment has a cleaning component. When the filter plate completes a detection cycle and automatically flips over, the elastic cleaning scraper provided inside the cleaning frame can clean the flipped filter plate to prevent fluff and impurities from adhering to the surface of the filter plate, thereby further improving the detection accuracy of the equipment.

[0020] (3) The papermaking felt wear resistance testing equipment, through the setting of the pressure regulating component, can operate through the hydraulic cylinder when the felt body is being transported for inspection, driving the middle layer plate and the bottom pressure frame to move downward, and applying different pressures to the conveyed felt body through the cooperation of the pressure roller, so as to judge the degree of wear on the surface of the felt body under different friction forces, further improving the scope of use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the machine body of the present invention;

[0023] Figure 3 It is a front view of the cross section of the machine body of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning plate frame of the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the collection box of the present invention;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the detection box of the present invention;

[0027] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0028] Figure 8 It is a schematic cross-sectional view of the arc frame and the cleaning frame of the present invention;

[0029] Fig. 9 For the present invention Figure 8 Sectional front view.

[0030] In the figure: 1, machine body; 101, control panel; 2, negative pressure device; 3, conveying roller; 4, blanket body; 5, marking module; 6, image scanning module; 7, temperature detection module; 8, grinding roller; 9, positioning plate frame; 10, hydraulic cylinder; 11, middle layer plate; 12, bottom pressure frame; 1201, pressure roller; 13, pressure detector; 1301, connecting rod; 14, limit slide rod; 1401, spring body; 15, collection box; 15 01, conical groove; 16, detection box; 1601, connecting pipe; 17, scraper; 1701, support spring; 18, filter plate; 1801, rotating shaft; 19, arc frame; 1901, slider; 1902, reset spring; 1903, push cylinder; 20, detection frame; 21, conductive plug plate; 22, cleaning frame; 2201, telescopic rod; 23, cleaning shaft; 2301, transmission belt; 2302, elastic cleaning scraper. DETAILED DESCRIPTION

[0031] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 The present invention provides two technical solutions, which specifically include the following embodiments:

[0033] Embodiment 1: In the embodiment of the present invention, a papermaking felt wear resistance test device includes a machine body 1, both sides of the machine body 1 are rotatably connected with conveying rollers 3 for conveying the felt body 4 to be tested, a control panel 101 is fixed on the outside of the machine body 1, and the conveying roller 3 is an existing device. A motor is fixedly installed on the outside of the machine body 1 to drive the conveying roller 3 to run and realize the conveying operation of the felt body 4. The control panel 101 is based on an existing PLC control module;

[0034] In the embodiment of the present invention, further, a grinding roller 8 is rotatably connected to the middle part of the inner side of the machine body 1, and the grinding roller 8 is used to perform a wear resistance test on the felt body 4. The grinding roller 8 is driven by a separate motor and is used to contact the felt body 4 when it is transported, and perform a friction test on the surface of the felt body 4.

[0035] In the embodiment of the present invention, further, an image scanning module 6 and a temperature detection module 7 are respectively provided inside the body 1, which are respectively used to perform image scanning and temperature detection on the polished blanket body 4, so as to judge the wear effect of the blanket body 4. The image scanning module 6 is an existing shooting module, which is used to shoot the surface of the worn blanket body 4, so as to further judge the wear condition of the surface of the blanket body 4. The temperature detection module 7 is an existing temperature detection instrument, which is used to detect the surface temperature of the blanket body 4.

[0036] In the embodiment of the present invention, further, a collecting box 15 is fixed inside the machine body 1, the collecting box 15 is installed directly below the grinding roller 8 and a detection box 16 is installed inside the collecting box 15, and a negative pressure device 2 is connected to the outside of the detection box 16 for collecting fluff and impurities generated during the grinding process, and an arc frame 19 is installed inside the detection box 16 so as to slide up and down, and a reversible filter plate 18 is installed inside the arc frame 19, and a plurality of detection frames 20 are fixed inside the detection box 16, and a conductive plug plate 21 adapted to the detection frame 20 is installed at the bottom of the arc frame 19, and the arc frame 19 can be pressurized as the filter plate 18 is blocked, and retracted into the detection box 16 by negative pressure, and the degree of surface wear of the blanket body 4 during the test is determined by the descending height of the arc frame 19;

[0037] In the embodiment of the present invention, specifically, a plurality of conductive ends adapted to the conductive plug plate 21 are provided inside the detection frame 20, which are not shown in the figure, and are used to feedback the depth of the conductive plug plate 21 inserted into the detection frame 20, and to judge the shedding of the fluff on the surface of the blanket body 4 when the blanket body 4 is undergoing the wear test. When the blanket body 4 is undergoing the test, as the filter plate 18 is blocked, the arc frame 19 slides downward and drives the conductive plug plate 21 to be inserted into the detection frame 20. When the length of the conductive plug plate 21 inserted into the detection frame 20 exceeds a preset value, it means that the fluff on the surface of the blanket body 4 is seriously shedding.

[0038] Specifically, a series circuit is formed between the conductive end inside the detection frame 20 and the conductive plug board 21 to monitor the insertion depth of the conductive plug board 21. The series circuit realizes the monitoring operation based on the existing PLC module;

[0039] In the embodiment of the present invention, specifically, when the blanket body 4 is subjected to a wear test, after one test cycle, as the fluff gradually accumulates on the surface of the filter screen plate 18, the filter screen plate 18 can be turned over 180°, and then as the negative pressure device 2 operates, the fluff adsorbed on the surface of the filter screen plate 18 can be extracted;

[0040] In the embodiment of the present invention, specifically, a plurality of sliders 1901 are fixed on both sides of the arc frame 19, and the sliders 1901 are slidably connected to the inner wall of the detection box 16. Reset springs 1902 are fixedly installed between the bottom of the arc frame 19 and the inner wall of the detection box 16. A rotating shaft 1801 is fixedly installed on the middle of both sides of the filter plate 18. A motor is fixedly installed on the outer side of the arc frame 19. The motor is not shown in the figure. The output end of the motor is connected to the corresponding end of the rotating shaft 1801 through a coupling, which is used to drive the rotating shaft 1801 and the filter plate 18 to flip 180°, so as to drive the filter plate 18 to flip inside the arc frame 19. The reset spring 1902 is used to drive the arc frame 19 to reset. When the filter plate 18 is blocked during the operation of the negative pressure device 2, the arc frame 19 slides toward the inside of the detection box 16, which can squeeze the reset spring 1902. When the negative pressure device 2 stops, the arc frame 19 can be driven to move up and reset through the cooperation of the reset spring 1902.

[0041] In the embodiment of the present invention, further, a conical groove 1501 is provided inside the collection box 15, the detection box 16 is fixed to the inner bottom of the conical groove 1501, and a connecting pipe 1601 is installed on the outer side of the detection box 16. The end of the connecting pipe 1601 is connected to the negative pressure device 2. The opening of the conical groove 1501 can improve the collection effect of the fluff. The negative pressure device 2 is an existing negative pressure pump, which will not be described in detail here.

[0042] In the embodiment of the present invention, further, a scraper 17 is slidably connected to the side of the collection box 15 up and down, and a plurality of support springs 1701 are fixedly installed at the bottom of the scraper 17. By setting the scraper 17, when the blanket body 4 is being transported and tested, the end of the scraper 17 is always in contact with the surface of the blanket body 4, and the fluff and impurities remaining on the surface can be scraped off, and the negative pressure is drawn into the detection box 16, so as to further ensure the detection accuracy.

[0043] In the embodiment of the present invention, a cleaning component is provided inside the detection box 16, and the cleaning component is used to clean the fluff and impurities remaining on the surface of the filter plate 18;

[0044] In the embodiment of the present invention, the cleaning assembly includes a cleaning frame 22, which is slidably installed below the arc frame 19, and a push cylinder 1903 is provided at the bottom of the arc frame 19. The push cylinder 1903 is fixedly connected to the arc frame 19 and is used to move downward with the arc frame 19. The piston end of the push cylinder 1903 is fixedly connected to the bottom of the cleaning frame 22, and is used to drive the cleaning frame 22 to move downward when the filter plate 18 is turned over. A plurality of cleaning shafts 23 are rotatably connected inside the cleaning frame 22, and a plurality of transmission belts 2301 are connected between the plurality of cleaning shafts 23, and a plurality of elastic cleaning scrapers 2302 are fixedly installed on the outer side of the transmission belt 2301, and the elastic cleaning scrapers 2302 are used to clean the surface of the filter plate 18;

[0045] In the embodiment of the present invention, specifically, when the filter plate 18 is turned over, the push cylinder 1903 drives the cleaning frame 22 to move downward to avoid affecting the turning operation of the filter plate 18. When the filter plate 18 is turned over, the push cylinder 1903 drives the cleaning frame 22 to move up and reset. At this time, the plurality of elastic cleaning scrapers 2302 can fit with the bottom of the filter plate 18, and then with the operation of the cleaning shaft 23, the transmission belt 2301 and the elastic cleaning scraper 2302 can be driven to operate to realize the cleaning operation of the filter plate 18, which avoids affecting the detection accuracy of the equipment and improves the convenience of maintenance of the equipment.

[0046] In the embodiment of the present invention, specifically, the cleaning shaft 23 is driven by a separate motor, which will not be described in detail here;

[0047] In the embodiment of the present invention, further, telescopic rods 2201 are connected between the two sides of the bottom of the cleaning rack 22 and the inside of the detection box 16. Through the setting of the telescopic rods 2201, when the cleaning rack 22 moves up and down inside the detection box 16, the telescopic rods 2201 can be stretched and retracted under force, thereby ensuring the operation stability of the cleaning rack 22;

[0048] In the embodiment of the present invention, further, a marking module 5 is fixedly installed inside the body 1 , and the marking module 5 is an existing marking device for marking the blanket body 4 .

[0049] Embodiment 2, based on embodiment 1, a pressure regulating assembly is provided above the felt body 4, which is used to adjust the contact area between the felt body 4 and the grinding roller 8 during transportation, so as to test the degree of wear on the surface of the felt body 4 under different pressure values;

[0050] In the embodiment of the present invention, specifically, the pressure regulating assembly includes a positioning plate frame 9, the positioning plate frame 9 is fixedly installed inside the machine body 1, the bottom of the positioning plate frame 9 is slidably connected with a middle layer plate 11, a pressure detector 13 is fixed at the bottom center of the middle layer plate 11, a plurality of connecting rods 1301 are installed on the outside of the pressure detector 13, a bottom pressing frame 12 is provided below the middle layer plate 11, the bottom pressing frame 12 is fixedly connected with a plurality of connecting rods 1301, and both sides of the bottom of the bottom pressing frame 12 are rotatably connected with pressure rollers 1201;

[0051] In the embodiment of the present invention, specifically, the top surface of the middle layer plate 11 is fixedly installed with limiting slide bars 14 all around, the limiting slide bars 14 all penetrate the positioning plate frame 9 and are slidably connected thereto, the end of the limiting slide bar 14 is sleeved with a spring body 1401, the interior of the positioning plate frame 9 is fixedly installed with a hydraulic cylinder 10, the piston end of the hydraulic cylinder 10 is fixedly connected to the middle layer plate 11, and the limiting slide bar 14 is used to ensure the running stability of the middle layer plate 11;

[0052] In the embodiment of the present invention, as the hydraulic cylinder 10 runs, it can drive the middle layer 11 and the bottom pressure frame 12 to move downward, so that the pressure rollers 1201 on both sides can contact the top surface of the blanket body 4. At the same time, through the cooperation of the pressure detector 13, the pressure applied by the pressure rollers 1201 can be controlled in real time to perform friction test operations on the blanket body 4 to different degrees.

[0053] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A papermaking felt wear resistance testing device, comprising a body (1), characterized in that: Conveying rollers (3) are rotatably connected to both sides of the machine body (1) for conveying the blanket body (4) to be inspected, and a control panel (101) is fixed to the outside of the machine body (1); A grinding roller (8) is rotatably connected to the middle of the inner side of the machine body (1), and the grinding roller (8) is used to perform a wear resistance test on the felt body (4). A pressure regulating component is provided above the felt body (4) to adjust the contact area between the felt body (4) and the grinding roller (8) during transportation. An image scanning module (6) and a temperature detection module (7) are respectively provided inside the machine body (1), which are used to perform image scanning and temperature detection on the polished blanket body (4) to determine the wear effect of the blanket body (4); A collecting box (15) is fixed inside the machine body (1), the collecting box (15) is installed directly below the grinding roller (8) and a detection box (16) is installed inside the collecting box (15), a negative pressure device (2) is connected to the outside of the detection box (16) for collecting fluff and impurities generated during the grinding process, an arc frame (19) is installed inside the detection box (16) to slide up and down, and a reversible filter plate (18) is installed inside the arc frame (19), a plurality of detection frames (20) are fixed inside the detection box (16), a conductive plug plate (21) adapted to the detection frame (20) is installed at the bottom of the arc frame (19), the arc frame (19) can be pressurized as the filter plate (18) is blocked, and can be retracted into the detection box (16) by negative pressure, and the degree of surface wear of the blanket body (4) during the test process is determined by the descending height of the arc frame (19); A plurality of sliders (1901) are fixed on both sides of the arc frame (19), the sliders (1901) are slidably connected to the inner wall of the detection box (16), reset springs (1902) are fixedly installed between the bottom of the arc frame (19) and the inner wall of the detection box (16), rotating shafts (1801) are fixedly installed in the middle of both sides of the filter plate (18), and a motor is fixedly installed on the outer side of the arc frame (19) for driving the filter plate (18) to perform a flipping operation inside the arc frame (19); The detection box (16) is provided with a cleaning component inside, and the cleaning component is used to clean the fluff and impurities remaining on the surface of the filter plate (18); The cleaning assembly comprises a cleaning frame (22), the cleaning frame (22) is slidably mounted below the arc frame (19) up and down, a pushing cylinder (1903) is provided at the bottom of the arc frame (19), a piston end of the pushing cylinder (1903) is fixedly connected to the bottom of the cleaning frame (22), and is used to drive the cleaning frame (22) to move downward when the filter plate (18) is turned over, a plurality of cleaning shafts (23) are rotatably connected inside the cleaning frame (22), a plurality of transmission belts (2301) are connected between the plurality of cleaning shafts (23), and a plurality of elastic cleaning scrapers (2302) are fixedly mounted on the outer side of the transmission belt (2301), and the elastic cleaning scrapers (2302) are used to clean the surface of the filter plate (18); Telescopic rods (2201) are connected between the two sides of the bottom of the cleaning rack (22) and the inside of the detection box (16).

2. The papermaking felt wear resistance testing device according to claim 1, characterized in that: The collecting box (15) is provided with a conical groove (1501) inside, the detecting box (16) is fixed to the inner bottom of the conical groove (1501), and a connecting pipe (1601) is installed on the outer side of the detecting box (16), and the end of the connecting pipe (1601) is connected to the negative pressure device (2).

3. The papermaking felt wear resistance testing device according to claim 1, characterized in that: The side of the collection box (15) is slidably connected to a scraper (17) up and down, and a plurality of supporting springs (1701) are fixedly installed on the bottom of the scraper (17).

4. The papermaking felt wear resistance testing device according to claim 1, characterized in that: A marking module (5) is fixedly installed inside the machine body (1).

5. The papermaking felt wear resistance testing device according to claim 1, characterized in that: The pressure regulating assembly comprises a positioning plate frame (9), wherein the positioning plate frame (9) is fixedly installed inside the machine body (1), and the bottom of the positioning plate frame (9) is slidably connected to a middle layer plate (11), a pressure detector (13) is fixed at the bottom center position of the middle layer plate (11), and a plurality of connecting rods (1301) are installed on the outside of the pressure detector (13), and a bottom pressing frame (12) is provided below the middle layer plate (11), and the bottom pressing frame (12) is fixedly connected to the plurality of connecting rods (1301), and pressure rollers (1201) are rotatably connected to both sides of the bottom of the bottom pressing frame (12).

6. The papermaking felt wear resistance testing device according to claim 5, characterized in that: Limiting slide bars (14) are fixedly installed around the top surface of the middle layer plate (11), and the limiting slide bars (14) pass through the positioning plate frame (9) and are slidably connected thereto. The ends of the limiting slide bars (14) are sleeved with spring bodies (1401). A hydraulic cylinder (10) is fixedly installed inside the positioning plate frame (9), and the piston end of the hydraulic cylinder (10) is fixedly connected to the middle layer plate (11).

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