Preparation method of intelligent early-warning filtering material

Abstract

The invention discloses a preparation method of an intelligent early-warning filtering material, so that the filtering material can develop color according to the acidity and alkalinity of an application environment, and mass production of the material can be realized through simple coating equipment. The preparation method of the intelligent early-warning filtering material conveys the filtering material according to the direction of an assembly line, is characterized in that a transmission shaft, a coating roller, a drying oven and a winding roller are sequentially arranged in the conveying direction of the filtering material, and comprises the following steps: step 1, preparing a litmus indicator solution, placing the litmus indicator solution above the coating roller, and drying the litmus indicator solution; the container containing the litmus indicator solution is communicated with the coating roller; and 2, the filter material is conveyed to the coating roller through the transmission shaft, the dust facing face of the filter material is coated with the litmus indicator solution and then enters the drying oven to be dried, and after drying, the filter material is loaded and rolled through the winding roller.

Description

Technical Field

[0001] The present invention belongs to the technical field of filtration material early warning, and particularly relates to a preparation method of an intelligent early warning filtration material. Background Art

[0002] The continuous and rapid development of China's economy is inseparable from the rapid growth of industry. At the same time, it has also brought serious environmental pollution problems. How to achieve ultra-low emissions and reduce industrial soot pollution is a hot issue that people are concerned about at present. In recent years, China has continuously increased its efforts in environmental pollution control. Now, industries such as coal-fired, steel, and cement have fully implemented ultra-low emission transformation. Bag dust removal technology is currently the internationally recognized high-efficiency dust removal technology, and the filter bag, as the core component of the bag dust collector, plays a decisive role in the dust removal effect of the bag dust collector.

[0003] The filtration material is the core of the bag dust removal technology, and its service life directly affects the dust removal effect. Corrosion is one of the most common reasons for filter bag damage, and acid-base corrosion is one of the main reasons for filter bag corrosion. The currently used filtration materials are basically synthetic fibers, and among them, many fibers are prone to corrosion in acidic or alkaline environments. For example, PI (polyimide) fibers and GL (glass) fibers are prone to alkali corrosion in alkaline environments, while MX (aromatic polyamide) fibers are prone to hydrolysis in acidic environments, etc. Therefore, it is very important to timely understand the acid-base change of the filter bag use environment.

[0004] Litmus is in the form of blue-violet powder, which is a blue pigment extracted from lichen plants and can be partially dissolved in water to show purple. Litmus is a commonly used acid-base indicator, and its color change range is between pH = 4.5 and 8.3. When pH ≤ 4.5, the litmus solution turns red; when 4.5 < pH ≤ 8.3, the litmus solution does not change color and remains purple; when pH > 8.3, the litmus solution turns blue. Summary of the Invention

[0005] The main purpose of the present invention is to provide a preparation method of an intelligent early warning filtration material, to solve the problems existing in the prior art, so that the filtration material itself can show color according to the acid-base property of the application environment, and the material can be mass-produced through a simple coating device.

[0006] To achieve the above object, the solution of the present invention is: A preparation method of an intelligent early warning filtration material, transporting the filtration material in the direction of the production line, characterized in that a drive shaft, a coating roll, an oven and a winding roll are sequentially arranged in the conveying direction of the filtration material, and includes the following steps: Step 1, prepare a litmus indicator solution, place it above the coating roll, and the container containing the litmus indicator solution is communicated with the coating roll; Step 2, the filter material is transported to the coating roller through the transmission shaft, and the dust-facing side of the filter material is coated with the litmus indicator solution and then enters the oven for drying, and is rolled up by the winding roller after drying.

[0007] The solvent of the litmus indicator solution is a mixture of ethanol and water, and the ratio of the two is 1:1; the mass of the litmus is 0.1-0.3 wt% of the total mass of the mixture and the litmus.

[0008] In step 2, the speed of the transmission shaft is set to 5-7 m / min, and the rolling allowance of the coating roller is set to 105-110%.

[0009] The oven is provided with 6 to 8 sections in total, and the temperature of the oven is set at 180 to 210°C.

[0010] After adopting the above technical solution, the present invention has the following technical effects: ① The present invention can utilize existing coating equipment, and only needs to configure a litmus indicator solution, so that the dust-facing surface of the filter material is coated with the litmus indicator solution, so that the dust-facing surface of the filter material is attached with litmus, thereby utilizing the characteristic that litmus will produce different color changes in different acid-base environments to warn the acidity and alkalinity of the filter material.

[0011] ② The process of the present invention is simple and easy to implement, and can realize the mass production of intelligent early warning filter materials. For manufacturers, there is no need to add new production equipment lines. In addition, litmus is extracted from natural plants, is non-toxic and harmless, and is easily available, so the production cost is well controlled. DETAILED DESCRIPTION

[0012] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0013] The present invention discloses a method for preparing an intelligent early warning filter material. The filter material is conveyed in the direction of an assembly line. A transmission shaft, a coating roller, an oven and a winding roller are sequentially arranged in the conveying direction of the filter material. The method comprises the following steps: Step 1, preparing a litmus indicator solution, placing the solution above the coating roller, and connecting the container containing the litmus indicator solution to the coating roller; Step 2: The filter material is transported to the coating roller through the transmission shaft. The dust-facing side of the filter material is coated with a litmus indicator solution and then placed in an oven for drying. After drying, the material is rolled up by a winding roller.

[0014] Through the above scheme, the present invention can utilize existing coating equipment, and only needs to configure a litmus indicator solution, so that the dust-facing surface of the filter material is coated with the litmus indicator solution, so that the dust-facing surface of the filter material is attached with litmus, thereby utilizing the characteristic that litmus will produce different color changes in different acid-base environments to warn the acidity and alkalinity of the filter material; at the same time, the process of the present invention is simple and easy to implement, and can realize the mass production of intelligent early warning filter materials. For manufacturers, there is no need to add new production equipment lines, and litmus is extracted from natural plants, non-toxic and harmless and easy to obtain, so the production cost is well controlled.

[0015] Specific embodiments of the present invention are shown below.

[0016] The solvent of the above litmus indicator solution is a mixture of ethanol and water, the ratio of which is 1:1; the mass of litmus is 0.1-0.3 wt% of the total mass of the mixture and litmus.

[0017] In the above step 2, the speed of the transmission shaft is set to 5-7 m / min, and the rolling allowance of the coating roller is set to 105-110%.

[0018] The above-mentioned oven is provided with 6 to 8 sections in total, and the temperature of the oven is set at 180 to 210°C.

[0019] The working principle of the present invention is: When using the intelligent early warning filter material, the surface of the filter material appears red when the smoke dust encountered by the filter material is acidic; the surface of the filter material appears purple when the smoke dust is weakly acidic, neutral or weakly alkaline; and the surface of the filter material appears blue when the smoke dust is alkaline.

[0020] The above embodiments do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A method for preparing an intelligent early warning filter material, wherein the filter material is conveyed in a flow line direction, characterized in that The transmission shaft, coating roller, oven and winding roller are sequentially arranged in the conveying direction of the filter material, including the following steps: Step 1, preparing a litmus indicator solution, placing the solution above the coated roller, and connecting a container containing the litmus indicator solution to the coated roller; Step 2, the filter material is transported to the coating roller through the transmission shaft, and the dust-facing side of the filter material is coated with the litmus indicator solution and then enters the oven for drying, and is rolled up by the winding roller after drying.

2. The method for preparing the intelligent early warning filter material according to claim 1, characterized in that: The solvent of the litmus indicator solution is a mixture of ethanol and water, and the ratio of the two is 1:1; the mass of the litmus is 0.1-0.3 wt% of the total mass of the mixture and the litmus.

3. The method for preparing the intelligent early warning filter material according to claim 1, characterized in that: In step 2, the speed of the transmission shaft is set to 5-7 m / min, and the rolling allowance of the coating roller is set to 105-110%.

4. The method for preparing the intelligent early warning filter material according to claim 1, characterized in that: The oven is provided with 6 to 8 sections in total, and the temperature of the oven is set at 180 to 210°C.