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CN-121994618-A - Tube-shape filter bag mechanical properties testing arrangement

CN121994618ACN 121994618 ACN121994618 ACN 121994618ACN-121994618-A

Abstract

The invention discloses a mechanical property testing device for a cylindrical filter bag, which comprises a sample, a compressor, a base bracket, a flow dividing device, an air injection device, an adjusting device and a protective cover, wherein the compressor is arranged in the base bracket and is positioned below the base bracket, the flow dividing device is positioned above the base bracket and is connected with the compressor, the sample is positioned above the flow dividing device, the lower end of the sample is inserted into the flow dividing device, the air injection device is vertically arranged in the sample and is connected with the flow dividing device, the adjusting device is vertically arranged in the center of the air injection device and is connected with the air injection device, and the protective cover is arranged above the base bracket and is covered on the sample.

Inventors

  • MAO HAIWEN
  • SHI RUIMING

Assignees

  • 常州纺织服装职业技术学院

Dates

Publication Date
20260508
Application Date
20260205

Claims (10)

  1. 1. The utility model provides a tube-shape filter bag mechanical properties testing arrangement, including sample (1) and compressor (2), characterized by still includes base support (3), diverging device (4), jet apparatus (5), adjusting device (6) and safety cover (7), compressor (2) set up in the inside of base support (3) and lie in the below of base support (3), diverging device (4) lie in the top of base support (3) and be connected with compressor (2), sample (1) lie in the top of diverging device (4) and the lower extreme male setting of sample (1) in the inside of diverging device (4), jet apparatus (5) have three groups and all vertically set up in the inside of sample (1), and three groups jet apparatus (5) all are connected with diverging device (4), adjusting device (6) vertical setting is in the central point of jet apparatus (5) and connect on jet apparatus (5), safety cover (7) set up in the top of base support (3) and cover is established on sample (1).
  2. 2. The device for testing mechanical properties of a cylindrical filter bag according to claim 1, wherein the compressor (2) is a screw type, a pressure regulating valve (21) is arranged at the air outlet of the compressor (2), and the pressure regulating valve (21) is connected with the compressor (2) and the flow dividing device (4) through an air duct (22).
  3. 3. The device for testing mechanical properties of a cylindrical filter bag according to claim 2, wherein the flow dividing device (4) comprises a fixed cylinder (41), a partition plate (42), four-way connectors (43), three-way reversing valves (44), guide pipes (45), air needles (46), impact force sensors (47) and sponges (48), the fixed cylinder (41) is arranged on a base support (3), the partition plate (42) is transversely arranged in the fixed cylinder (41), the four-way connectors (43) are arranged below the partition plate (42) and connected with the air guide pipes (22), the three air outlets of the three-way reversing valves (44) are respectively arranged above the four-way connectors (43), the air needles (46) are vertically arranged above the partition plate (42), one guide pipe (45) is arranged in each air needle (46), the impact force sensors (47) are arranged above the partition plate (42) and are arranged at the center position of the partition plate (42), and the sponges (48) are arranged above the partition plate (42) and are arranged with a sample (1) as the center.
  4. 4. The device for testing mechanical properties of a cylindrical filter bag according to claim 3, wherein each air needle (46) is internally and transversely provided with a baffle (8), the baffle (8) is provided with a first air outlet cylinder (81) and a second air outlet cylinder (82), and the guide tube (45) is connected with the first air outlet cylinder (81).
  5. 5. The device for testing mechanical properties of a cylindrical filter bag according to claim 4, wherein a flow guide pipe (83) is further arranged in each air needle (46), two ends of the flow guide pipe (83) are respectively connected with a three-way reversing valve (44) and a second air outlet cylinder (82), and external threads matched with the air injection device (5) are arranged on the outer wall of each air needle (46).
  6. 6. The device for testing mechanical properties of a cylindrical filter bag according to claim 5, wherein the air injection device (5) comprises a connector (51), a threaded cylinder (52), an air injection pipe (53), a blocking block (54) and a permanent magnet (55), the connector (51) is arranged on an air needle (46) in an inserted mode, the threaded cylinder (52) is located below the connector (51) and connected with the air needle (46), the air injection pipe (53) is vertically arranged on the connector (51), the blocking block (54) is slidably arranged in the air injection pipe (53), and the permanent magnet (55) is arranged in the blocking block (54) and matched with the adjusting device (6).
  7. 7. The device for testing mechanical properties of a tubular filter bag according to claim 6, wherein a first air inlet cylinder (56), a second air inlet cylinder (57) and a gasket (58) are arranged in the connector (51), the first air inlet cylinder (56) and the second air inlet cylinder (57) are respectively connected with a first air outlet cylinder (81) and a second air outlet cylinder (82), the gaskets (58) are arranged on the first air inlet cylinder (56) and the second air inlet cylinder (57), and the first air inlet cylinder (56) is connected with the air injection pipe (53).
  8. 8. The device for testing mechanical properties of a cylindrical filter bag according to claim 7, wherein a telescopic tube (59) is arranged in the air injection tube (53), two ends of the telescopic tube (59) are respectively connected with the blocking block (54) and the second air inlet tube (57), a channel is formed in the blocking block (54), and a sealing gasket (10) is further arranged at the lower end of the blocking block (54).
  9. 9. The device for testing mechanical properties of a cylindrical filter bag according to claim 5, wherein the adjusting device (6) comprises a fixed plate (61), a fixed support (62), a screw (63), a motor (64), a main gear (65), a secondary gear (66), a sliding block (67) and a limiting rod (68), the fixed plate (61) is arranged on the connecting head (51), the fixed support (62) is arranged at the center of the fixed plate (61), the screw (63) is vertically connected to the fixed support (62), the motor (64) is located below the fixed support (62), the main gear (65) is connected to an output shaft of the motor (64), the secondary gear (66) is arranged below the screw (63), the main gear (65) is meshed with the secondary gear (66), the sliding block (67) is in threaded connection with the screw (63), the limiting rod (68) is arranged on two sides of the screw (63), and the limiting rod (68) penetrates through a preset through hole of the sliding block (67).
  10. 10. The device for testing mechanical properties of a cylindrical filter bag according to claim 9, wherein three fixing rods (9) are arranged on the sliding block (67), batteries (91) are arranged above the three fixing rods (9), electromagnets (92) are arranged at the end parts of the three fixing rods (9), the electromagnets (92) are electrically connected with the batteries (91), and the positions of the three electromagnets (92) correspond to the three blocking blocks (54) respectively.

Description

Tube-shape filter bag mechanical properties testing arrangement Technical Field The invention relates to the technical field of dust removal, in particular to a device for testing mechanical properties of a cylindrical filter bag. Background In recent years, haze weather in China is mainly caused by the fact that enterprises exceed the emission of industrial waste gas, including steel plants, power plants, cement plants, garbage incineration plants, chemical plants and the like. So that national policy standards for exhaust emission are increasingly increasing in order to ensure air quality. In order to ensure production, bag house has become a necessity for factories, filter bags have been the main consumable of bag houses, and market demands have also been steadily rising. The mechanical properties of the filter bag have great influence on the use effect, the mechanical properties comprise breaking strength and breaking elongation, especially in the ash cleaning process of the filter bag, ash cleaning actions are carried out once every 30 min on average, each ash cleaning pulse airflow applies instantaneous pressure to the filter bag for a plurality of times, the impact frequency and the times of the airflow received by the filter bag are high, and the filter bag is easy to break under the stress in the process of a plurality of times of impact, especially at joints. Currently, the performance testing of filter bags includes filtration performance and mechanical properties, where mechanical properties determine the useful life of the filter bag. The mechanical property of the filter bag still adopts a traditional fabric mechanical property tester, the cylindrical fabric is cut into the size specified by the standard, the mechanical property of the filter bag is measured by the mechanical property of the single fabric, and then the service life of the filter bag is evaluated, but in actual use, the cylindrical structure is used, and the mechanical property and the service life cannot be measured systematically by the planar mechanical property test. Disclosure of Invention The invention aims to overcome the defects that the prior mechanical property tester adopts the mechanical property of a single piece of fabric to measure the mechanical property of a filter bag and then evaluates the service life of the filter bag, but the mechanical property tester adopts a cylindrical structure in use and the mechanical property test of a plane cannot systematically measure the mechanical property and the service life in actual use. The utility model provides a tube-shape filter bag mechanical properties testing arrangement, including sample and compressor, still include base support, diverging device, jet-propelled device, adjusting device and safety cover, the compressor sets up in the inside of base support and be located the below of base support, diverging device is located the top of base support and is connected with the compressor, the sample is located the top of diverging device and the lower extreme male setting of sample in diverging device's inside, jet-propelled device has three and all vertical setting in the inside of sample, and three sets of jet-propelled device all are connected with diverging device, adjusting device vertical setting is on jet-propelled device in the central point put and connect, the safety cover setting is in the top of base support and cover is established on the sample. According to the technical scheme, when a test is carried out, a sample is placed in the protective cover in a cylindrical shape, the cylindrical shape is identical to the shape of the sample in use, then when the test is carried out, the air injection device injects air into the sample so as to expand the sample, so that the expansion state of the sample can be simulated when the test is used, the mechanical property of the sample is measured in a cylindrical structure, the mechanical property of a single piece of fabric is adopted by the conventional mechanical property tester in order to measure the mechanical property of the filter bag, and then the service life of the filter bag is evaluated, but when the test is carried out, the cylindrical structure is used, and the mechanical property and the service life of the filter bag cannot be measured systematically in the planar mechanical property test. According to the technical scheme, the compressor is preferably a screw type compressor, the air outlet of the compressor is provided with the pressure regulating valve, the pressure regulating valve is connected with the compressor and the flow dividing device through the air guide pipe, air compressed by the compressor can be injected into the flow dividing device through the guide pipe, and the pressure of air flow can be regulated through the pressure regulating valve when the air conditioner is used. The invention discloses a technical scheme of a gas-liquid separation device, which is characterized in that