Oil smoke treatment method for thermal deformation vicat softening temperature tester

Abstract

The invention discloses an oil fume treatment method for a thermal deformation vicat softening temperature tester, belongs to the technical field of gas purification treatment, and comprises a treatment method based on an oil fume purifier, and the treatment method comprises the steps of pre-installation treatment, oil fume suction collection, primary-efficiency cotton filtration, medium-efficiency filter treatment, high-efficiency filter treatment, oil liquid collection, flue gas discharge and the like. The oil fume purifier is arranged, so that the effects of efficient multi-stage purification and comprehensive pollutant removal are achieved, and solid particles, volatile organic compounds and peculiar smell in oil fume are synchronously removed by primarily intercepting large-particle oil mist, medium-efficiency intercepting tiny particles and efficiently adsorbing harmful gas through activated carbon through a triple filtering mechanism; the stainless steel elbow is in sealed connection with the high-temperature-resistant bamboo joint pipe, negative-pressure closed-loop conveying is matched, the risk of oil fume leakage is eradicated, the method is suitable for different types of thermal deformation testers, and the method is low in cost and easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of gas purification treatment, and particularly relates to an oil fume treatment method for a heat distortion and Vicat softening temperature tester. Background Art

[0002] A heat distortion and Vicat softening temperature tester is a test system for measuring the Vicat softening temperature of thermoplastics and the heat distortion temperature (HDT) of fiber-reinforced and filled thermosetting plastics, as well as thermoplastics and hard rubbers. The heat distortion and Vicat softening temperature tester mainly consists of a specimen holder, an oil tank, a heater, a stirrer, a temperature sensor, a displacement measuring device, a controller, etc. During the test, the specimen is placed on the specimen holder. After applying a constant load, the specimen holder and the specimen are immersed in the oil together. Subsequently, the oil in the oil tank is heated at a constant heating rate. By measuring the deformation of the specimen, when the specimen reaches the specified deformation amount, the temperature value at this time is recorded as the test result. Among them, during the heating process of the oil, when it reaches a certain temperature, oil fume and other solid particles will be generated. The enrichment of these solid particles in the oil tank will cause two adverse effects: one is that it will cause the jamming of related moving parts, resulting in inaccurate test results; the other is that it will contaminate the oil and shorten the service life of the oil. Therefore, the oil fume generated during the test process needs to be properly treated to avoid affecting the use of the equipment. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an oil fume treatment method for a heat distortion and Vicat softening temperature tester.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An oil fume treatment method for a heat distortion and Vicat softening temperature tester, including a treatment method based on an oil fume purifier, comprising the following steps:

[0006] S1. Pre-installation treatment: Connect the tester equipment through a stainless steel elbow. One end of the elbow is welded to the upper cover of the oil tank, and the other end is led to the rear of the equipment; the tester equipment and the oil fume purifier are connected by placing one end of a bamboo joint pipe about 10 mm behind the equipment smoke pipe, and the other end is connected to the inlet of the oil fume purifier;

[0007] S1. Oil fume suction collection: Connect the oil fume purifier and the tester equipment through a bamboo joint pipe. Absorb the oil fume generated by the tester equipment through a negative pressure suction fan, and transport it to the oil fume purifier through the bamboo joint pipe;

[0008] S2. Primary cotton filtration: The fume gas passes through the top - layer primary cotton in the fume purifier. The primary cotton has relatively large pores, and the hot oil volatilized at high temperature in the fume will condense on the primary cotton, achieving preliminary purification of the fume gas.

[0009] S3. Intermediate - efficiency filter treatment: The fume that has undergone preliminary purification passes through the intermediate - efficiency filter. The intermediate - efficiency filter has relatively small pores, and the tiny solid particles in the fume gas will be filtered and collected, achieving secondary purification of the fume gas.

[0010] S4. High - efficiency filter treatment: The fume gas after secondary treatment enters the high - efficiency filter. Under the action of the purification particles in the high - efficiency filter, toxic and harmful gases and odors in the fume gas are adsorbed, achieving tertiary purification of the fume gas.

[0011] S5. Oil liquid collection and flue gas discharge: The gas that has undergone triple treatment by the fume purifier is finally discharged after purification under the action of the negative - pressure fan set at the tail of the fume purifier.

[0012] As a preferred solution, in S2, the top - layer is primary cotton, whose main materials are PET (polyester fiber) and PP (polypropylene fiber), and it has relatively large pores.

[0013] As a preferred solution, in S3, the middle - layer is the intermediate - efficiency filter, whose main material is PP (polypropylene) high - efficiency filter paper, and it has relatively small pores.

[0014] As a preferred solution, the main component of the purification particles in S4 is activated carbon.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By setting up the fume purifier, the present invention achieves the effect of high - efficiency multi - stage purification and comprehensive removal of pollutants. Through a triple - filtration mechanism, large - particle oil mists are intercepted initially, tiny particles are intercepted at the intermediate stage, and harmful gases are adsorbed by high - efficiency activated carbon, realizing the synchronous removal of solid particles, volatile organic compounds, and odors in the fume. The emissions meet national environmental protection standards, achieving the purpose of protecting the test environment.

[0017] 2. The present invention is hermetically connected by a stainless - steel elbow and a high - temperature bamboo - joint pipe, and with negative - pressure closed - loop transportation, it eliminates the risk of fume leakage, adapts to different models of heat distortion temperature measuring instruments. This method is low - cost and easy to use; only one flue gas outlet needs to be reserved on the equipment, with a simple structure, small occupied volume, and will not affect the normal use of the measuring instrument equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic flow chart of a fume treatment method for a heat distortion and Vicat softening temperature measuring instrument proposed by the present invention. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] Example, refer to Figure 1 , an oil fume treatment method for a heat distortion Vicat softening temperature tester, including a treatment method based on an oil fume purifier, comprising the following steps:

[0022] Connect the tester device through a stainless steel elbow. One end of the elbow is welded to the upper cover plate of the fuel tank, and the other end is led to the rear of the device; the tester device and the oil fume purifier are connected by placing one end of a bamboo joint pipe about 10 mm behind the smoke pipe of the device, and the other end is connected to the inlet of the oil fume purifier;

[0023] Connect the oil fume purifier and the tester device through a bamboo joint pipe, absorb the oil fume generated by the tester device through a negative pressure suction fan, and transport it to the oil fume purifier through the bamboo joint pipe;

[0024] Weld a stainless steel elbow (material 304, wall thickness 1.5 mm) on the upper cover plate of the fuel tank of the tester, and the other end extends to the smoke pipe at the rear of the device to ensure tightness (seal by argon arc welding with the fuel tank cover plate).

[0025] Connect the smoke pipe of the device and the inlet of the purifier with a high-temperature resistant bamboo joint pipe (inner diameter φ50 mm, temperature resistance ≥ 150 °C). The front end of the bamboo joint pipe is 10 mm away from the smoke pipe outlet, and an effective adsorption area is formed by negative pressure to avoid oil fume escape.

[0026] Configure a high-pressure centrifugal fan (power ≥ 0.08 kW, air volume ≥ 235 m 3 / h, negative pressure > 2000 PA) at the tail of the oil fume purifier to fix the suction intensity and ensure the whole-process airtight transportation of the oil fume.

[0027] The fume gas will pass through the primary filter cotton on the top layer in the fume purifier. The primary filter cotton has relatively large pores, and the hot oil volatilized at high temperature in the fume will condense on the primary filter cotton, achieving the preliminary purification treatment of the fume gas;

[0028] Use PET / PP composite primary filter cotton (thickness 20mm, porosity ≥ 85%), increase the contact area through the staggered fiber structure, intercept large particle size oil mist (particle size > 10μm) volatilized at high temperature, form oil droplets and aggregate into a liquid film after condensation, and condense on the primary filter cotton. Replace the primary filter cotton regularly to ensure efficient interception of large particle size oil mist.

[0029] The other fume gas after preliminary purification treatment will pass through the medium - efficiency filter. The medium - efficiency filter has relatively small pores, and the tiny solid particles in the fume gas will be filtered and collected, achieving the secondary purification treatment of the fume gas;

[0030] The fume gas after secondary treatment enters the high - efficiency filter. Under the action of the purification particles in the high - efficiency filter, the toxic and harmful gases and odors in the fume gas are adsorbed, achieving the tertiary purification treatment of the fume gas;

[0031] The gas triple - treated by the fume purifier is finally discharged after the action of the negative - pressure fan set at the tail of the fume purifier.

[0032] The top layer is the primary filter cotton, whose main materials are PET (polyester fiber) and PP (polypropylene fiber), and it has relatively large pores.

[0033] The middle layer is the medium - efficiency filter, whose main material is PP (polypropylene) high - efficiency filter paper, and it has relatively small pores.

[0034] The main component of the purification particles is activated carbon. Monitor the change of the motor current or rotation speed through the sensor built in the motor to monitor the blockage state in real time;

[0035] The present invention is hermetically connected through a stainless - steel elbow and a high - temperature - resistant bamboo joint pipe, and cooperates with negative - pressure closed - loop transportation to eliminate the risk of fume leakage, adapt to different models of thermal deformation measuring instruments. This method has low cost and is easy to use; only one flue opening needs to be reserved on the equipment, with a simple structure, small occupied volume, and will not affect the normal use of the measuring instrument equipment.

[0036] The present invention achieves the effect of high - efficiency multi - stage purification and comprehensive removal of pollutants by setting a fume purifier. Through a triple - filtration mechanism, it intercepts large particle oil mist in the primary stage, retains tiny particulate matter in the medium - efficiency stage, and adsorbs harmful gases with high - efficiency activated carbon, realizing the synchronous removal of solid particles, volatile organic compounds and odors in the fume. The emissions meet the national environmental protection standards, achieving the purpose of protecting the test environment.

[0037] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A method for treating oil fume in a heat distortion and Vicat softening temperature tester, including a treatment method based on an oil fume purifier, characterized in that, The following steps are involved: S1. Pre-installation: Connect the measuring instrument to the equipment through a stainless steel elbow. One end of the elbow is welded to the upper cover of the fuel tank, and the other end is led to the rear of the equipment. The measuring instrument and the oil fume purifier are connected by placing one end of a bamboo tube about 10mm behind the equipment smoke pipe and the other end is connected to the oil fume purifier inlet. S1. Fume collection by suction: Connect the fume purifier and the measuring instrument through a bamboo tube. The negative pressure suction fan absorbs the fume generated by the measuring instrument and transports it to the fume purifier through the bamboo tube. S2. Primary cotton filtration: The oil fume gas will pass through the top layer of primary cotton in the oil fume purifier. The primary cotton has larger pores. The hot oil volatilized by high temperature in the oil fume will condense on the primary cotton, achieving preliminary purification of the oil fume gas. S3, medium efficiency filter treatment: The remaining gas after the initial purification treatment will pass through the medium efficiency filter. The pores in the medium efficiency filter are small, and the tiny solid particles in the oil fume gas will be filtered and collected, realizing the secondary purification treatment of the oil fume gas; S4. HEPA filter treatment: The oil fume gas after secondary treatment enters the HEPA filter. Under the action of the purification particles in the HEPA filter, the toxic and harmful gases and odors in the oil fume gas are adsorbed, thus achieving the third purification treatment of the oil fume gas. S5. Oil collection and fume discharge: The gas that has undergone triple treatment in the fume purifier is finally discharged through the negative pressure fan installed at the tail of the fume purifier.

2. The oil fume treatment method for a heat distortion and Vicat softening temperature tester according to claim 1, wherein, The uppermost layer in S2 is primary-effect cotton, the main materials of which are PET (polyester fiber) and PP (polypropylene fiber), and the pores thereof are relatively large.

3. The fume treatment method for a heat distortion and Vicat softening temperature tester according to claim 1, characterized in that, The S3 middle layer is a medium-efficiency filter, the main material of which is PP (polypropylene) high-efficiency filter paper, and its pores are relatively small.

4. A fume treatment method for a heat distortion and Vicat softening temperature tester according to claim 1, characterized in that, The main component of the purification particles in S4 is activated carbon.

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