High-precision tester for air permeability and water permeability of papermaking felt

Abstract

The utility model relates to the technical field of papermaking felt detection, in particular to a high-precision tester for air permeability and water permeability of a papermaking felt. The device comprises a detection table, a detection box is arranged below the detection table, and a fixing device is arranged between the detection table and the detection box. According to the paper making felt fixing device, the paper making felt is tightly clamped and extruded in the notch of the upper clamping plate through the arranged rubber ring, cutting is carried out while the paper making felt is fixed, the time of preparation work before detection is effectively saved, the fixing device is inserted into the hole formed in the side wall of the shell, and the paper making felt fixing device is convenient to use. Gas or liquid jetted by the two jet devices penetrates through the papermaking felt and enters the detection box for detection and analysis, and the detection table and the detection box are effectively sealed through the arranged sealing ring, so that the accuracy of test data is ensured, and the detection precision of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking felt detection, in particular to a high-precision air and water permeability tester for papermaking felt. Background Art

[0002] Papermaking felt refers to the fabric felt used for paper forming and conveying in the papermaking industry. The processing method of papermaking felt is to first weave a base net with synthetic fibers, then lay a mixed fiber net of synthetic fibers and a small amount of wool, and then needle punching, chemical treatment, resin finishing and heat setting. After the papermaking felt is processed and formed, its air permeability and water permeability need to be tested. The hydrostatic pressure test method is one of the commonly used water permeability test methods. The principle is to pressurize the permeable material and calculate the water flow rate and pressure difference to solve the water permeability. This method is suitable for the case where the thickness of the permeable material is large, and the test results are more accurate. The Claus method is a more accurate air permeability test method. This method uses mass, flowmeter and pressure differential meter to measure air permeability. During the test, the sample is placed in the test instrument. Under the condition of pressure difference, the mass, flow and differential pressure values ​​passing through the sample are measured to calculate the air permeability index of the textile. Both air permeability and water permeability need to be measured in a sealed environment. The current existing technology is inconvenient for fixing the papermaking felt during testing, and the size and angle of the papermaking felt need to be manually adjusted, which is not conducive to improving the efficiency of testing. Utility Model Content

[0003] The utility model aims to provide a high-precision air and water permeability tester for papermaking felt to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides a high-precision papermaking felt air permeability and water permeability tester, including a testing platform, the testing platform includes a shell, two side walls of the shell are provided with holes, a fixing device is arranged in the hole, the fixing device includes an upper card plate, the upper card plate is arranged in a square shape, one side of the upper card plate is arranged in a notch, a cutter is fixedly installed in the notch of the upper card plate, a lower card plate is arranged on the side of the cutter away from the upper card plate, the lower card plate is arranged in a square shape, a rubber ring is fixedly installed on the side of the lower card plate close to the upper card plate, the rubber ring is clamped in the upper card plate, a wedge groove is arranged on the side of the rubber ring away from the lower card plate, and the cutter is inserted in the wedge groove of the lower card plate.

[0005] As a further improvement of the technical solution, handles are fixedly installed on the same side of the upper clamping plate and the lower clamping plate, and the two handles fit tightly.

[0006] As a further improvement of the technical solution, sealing rings are fixedly installed at both ends of the upper clamping plate and the lower clamping plate. The sealing rings are made of rubber material and are clamped in the hole wall of the shell.

[0007] As a further improvement of the technical solution, a hinge is provided on the side of the upper clamping plate and the lower clamping plate away from the handle, and the side of the upper clamping plate and the lower clamping plate away from the handle are hingedly connected by the hinge.

[0008] As a further improvement of the technical solution, a detection box is provided on the side of the fixing device away from the detection platform, the detection box is movably connected to the shell, and a detection hole is opened on the side of the detection box close to the lower clamping plate.

[0009] As a further improvement of the technical solution, two spray devices are fixedly installed on one side of the shell close to the upper clamping plate, and the two spray devices are respectively configured to spray water and air.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the high-precision papermaking felt air and water permeability tester, the papermaking felt is fixed by an upper cardboard and a lower cardboard, and the two handles are pressed down to make the cutter cut the papermaking felt and insert it into the rubber ring. The papermaking felt is tightly squeezed into the recess of the upper cardboard by the rubber ring, and the papermaking felt is cut while being fixed, which effectively saves the time of preparation work before testing. The fixing device is inserted into the hole opened on the side wall of the shell, and the gas or liquid sprayed by the two spraying devices passes through the papermaking felt into the detection box for detection and analysis. The sealing ring is set to maintain an effective seal between the detection platform and the detection box, thereby ensuring the accuracy of the test data and improving the detection accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the testing platform of the utility model;

[0014] Figure 3 It is a schematic diagram of the exploded structure of the fixing device of the utility model.

[0015] The meaning of each number in the figure is:

[0016] 1. Testing table; 11. Housing; 12. Spraying device;

[0017] 2. Fixing device; 21. Upper cardboard; 22. Sealing ring; 23. Handle; 24. Cutter; 25. Rubber ring; 26. Hinge; 27. Lower cardboard;

[0018] 3. Test kit. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] Example 1

[0022] See also Figure 1-Figure 3 As shown, the present embodiment provides a high-precision air and water permeability tester for papermaking felt, comprising a testing platform 1, the testing platform 1 comprising a shell 11, two spray devices 12 are arranged in the shell 11, the water permeability and air permeability of the papermaking felt placed in the shell 11 are tested by the two spray devices 12 for spraying water and air respectively, holes are provided on the two side walls of the shell 11, the holes are provided below the spray devices 12, a fixing device 2 is provided in the hole, the papermaking felt is cut and fixed by the fast-detachable fixing device 2, and is placed below the spray device 12 for testing, a testing box 3 is movably connected below the shell 11, a testing hole is provided on the side of the testing box 3 close to the fixing device 2, the gas or liquid sprayed from the spray device 12 enters the testing box 3 through the papermaking felt fixed in the fixing device 2, the gas or liquid is tested by the testing box 3, and the air and water permeability of the papermaking felt is analyzed.

[0023] The fixing device 2 includes an upper cardboard 21 and a lower cardboard 27 which are arranged in a square shape. The upper cardboard 21 is arranged above the lower cardboard 27. The papermaking felt is placed between the upper cardboard 21 and the lower cardboard 27. The lower cardboard 27 is clamped in a notch arranged on the upper cardboard 21 for fixing. A cutter 24 is fixedly installed in the notch of the upper cardboard 21. A rubber ring 25 is fixedly installed on the lower cardboard 27 close to the upper cardboard 21. The friction between the papermaking felt and the upper cardboard 21 is increased by clamping the rubber ring 25 in the notch of the upper cardboard 21, so that the device is more stable. The upper cardboard 21 is pressed down so that the cutter 24 is inserted into the oblique groove provided on the rubber ring 25 to cut the papermaking felt between the cutter 24 and the rubber ring 25, which saves the process of workers manually cutting the papermaking felt, thereby improving the efficiency of detection. One end of the upper card plate 21 and the lower card plate 27 are hinged by a hinge 26, so that the upper card plate 21 and the lower card plate 27 can be opened and closed, which is convenient for the placement of the papermaking felt. The upper card plate 21 and the lower card plate 27 are fixedly installed with a handle 23 at one end away from the hinge 26. By holding the handle 23, the two handles 23 are tightly pressed together to make the cutter 24 cut the papermaking felt, thereby avoiding the situation where the worker touches the cutter 24 and scratches his fingers during inspection. The upper card plate 21 and the lower card plate 27 are fixedly installed with a sealing ring 22 at both ends. After the papermaking felt is fixed and cut, the fixing device 2 is inserted into the hole of the shell 11. The sealing ring 22 made of rubber material is clamped in the hole wall of the shell 11 to make the test table 1 and the test box 3 sealed to avoid internal air leakage and inaccurate test data.

[0024] When the high-precision papermaking felt air and water permeability tester of this embodiment is used, the papermaking felt is placed between the upper cardboard 21 and the lower cardboard 27, and the two handles 23 are pressed down to make the cutter 24 cut the papermaking felt and insert it into the rubber ring 25. The papermaking felt is tightly squeezed into the recess of the upper cardboard 21 by the provided rubber ring 25, and the papermaking felt is cut while being fixed, which effectively saves the time of preparation work before detection. The fixing device 2 is inserted into the hole opened on the side wall of the shell 11, and the gas or liquid sprayed by the two injection devices 12 passes through the papermaking felt and enters the detection box 3 for detection and analysis. The provided sealing ring 22 maintains an effective seal between the detection platform 1 and the detection box 3, thereby ensuring the accuracy of the test data and improving the detection accuracy of the device.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-precision air and water permeability tester for papermaking felts, comprising a test bench (1), the test bench (1) comprising a housing (11), two side walls of the housing (11) are provided with holes, the holes are provided with fixing devices (2), and the characteristics are: The fixing device (2) comprises an upper card plate (21), the upper card plate (21) is arranged in a square shape, one side of the upper card plate (21) is arranged in a notch, a cutter (24) is fixedly installed in the notch of the upper card plate (21), a lower card plate (27) is arranged on the side of the cutter (24) away from the upper card plate (21), the lower card plate (27) is arranged in a square shape, a rubber ring (25) is fixedly installed on the side of the lower card plate (27) close to the upper card plate (21), the rubber ring (25) is clamped in the upper card plate (21), a wedge groove is provided on the side of the rubber ring (25) away from the lower card plate (27), and the cutter (24) is inserted into the wedge groove of the lower card plate (27).

2. The high-precision papermaking felt air and water permeability tester according to claim 1, characterized in that: A handle (23) is fixedly mounted on the same side of the upper clamping plate (21) and the lower clamping plate (27), and the two handles (23) fit tightly together.

3. The high-precision papermaking felt air and water permeability tester according to claim 1, characterized in that: Sealing rings (22) are fixedly mounted on both ends of the upper clamping plate (21) and the lower clamping plate (27); the sealing rings (22) are made of rubber material and are clamped in the hole wall of the housing (11).

4. The high-precision papermaking felt air and water permeability tester according to claim 1, characterized in that: A hinge (26) is provided on one side of the upper clamping plate (21) and the lower clamping plate (27) away from the handle (23); the upper clamping plate (21) and the lower clamping plate (27) are hingedly connected on one side away from the handle (23) via the hinge (26).

5. The high-precision papermaking felt air and water permeability tester according to claim 1, characterized in that: A detection box (3) is provided on a side of the fixing device (2) away from the detection platform (1); the detection box (3) is movably connected to the housing (11); and a detection hole is provided on a side of the detection box (3) close to the lower clamping plate (27).

6. The high-precision papermaking felt air and water permeability tester according to claim 1, characterized in that: Two spray devices (12) are fixedly mounted on one side of the housing (11) close to the upper clamping plate (21), and the two spray devices (12) are respectively configured to spray water and air.

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