A waste gas treatment equipment for PTFE base cloth production

Abstract

The present invention relates to the technical field of waste gas treatment devices, and in particular to a waste gas treatment equipment for PTFE base cloth production, comprising: a waste gas purification mechanism and a waste gas collecting mechanism; the waste gas collecting mechanism comprises an upper collecting hood, a lower collecting cover, a collecting pipe and a suction fan; the suction fan is fixedly connected to the upper collecting hood; the connecting pipe is fixedly connected and communicated with a solenoid valve; a No. 1 air pressure sensor is fixedly connected to a position near the connecting pipe in the collecting hood; the lower collecting cover is fixedly connected and communicated with an air intake pipe; the air intake pipe is also fixedly connected and communicated with a solenoid valve; the present invention covers the PTFE base cloth from top to bottom through the upper collecting hood and the lower collecting cover, and then blows out wind curtains on the left and right sides of the upper collecting hood and the lower collecting cover, so that the wind curtains isolate the outside air, thereby preventing the outside air from entering the upper collecting hood and the lower collecting block, thereby preventing the outside air from entering, so that the total amount of waste gas increases while the waste gas concentration decreases.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment devices, and in particular to waste gas treatment equipment for PTFE base cloth production. Background Art

[0002] PTFE fabric is made of polytetrafluoroethylene as the main raw material. It has excellent chemical stability and can withstand strong acids and alkalis. It is used in conveyor belts and sealing materials in industry, in the field of environmental protection for exhaust gas filtration, and in the field of clothing for outdoor clothing.

[0003] In the emulsion spinning process of PTFE fiber, some organic solvents are used to disperse PTFE resin, such as perfluorooctanoate (PFOA) as an emulsifier. During the drawing, heating, drying and other processes, these organic solvents will volatilize to produce waste gas, including fluorine-containing waste gas. At the same time, if the PTFE fiber is subjected to post-processing such as printing and dyeing, the dyes and auxiliaries used in the printing and dyeing process will volatilize to produce organic waste gas during the drying and baking processes.

[0004] When waste gas treatment equipment collects waste gas, it usually adopts the method of suction using a gas collection hood. Therefore, during the process of collecting waste gas, air will be inhaled, thereby reducing the concentration of the collected waste gas. Therefore, the total amount of waste gas that needs to be treated in subsequent waste gas treatment increases, which in turn causes limitations.

[0005] To this end, we propose an exhaust gas treatment device for PTFE base cloth production. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides an exhaust gas treatment device for PTFE base cloth production, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an exhaust gas treatment device for PTFE base cloth production, comprising:

[0008] Exhaust gas purification mechanism and exhaust gas collection mechanism; the exhaust gas collection mechanism includes an upper collection cover, a lower collection cover, a collection pipe and a suction fan; the collection pipe is fixedly connected to and connected to the upper collection cover; the upper collection cover and the lower collection block are both equipped with mounting plates; the lower collection cover can block the lower end of the upper collection cover; the suction fan is fixedly connected to the upper collection cover; the connecting pipe is fixedly connected to and connected with a solenoid valve; a No. 1 air pressure sensor is fixedly connected to the position near the connecting pipe in the collection cover; the lower collection cover is fixedly connected to and connected with an air intake pipe; the air intake pipe is also fixedly connected to and connected with a solenoid valve.

[0009] Preferably, both sides of the upper collecting cover and the lower collecting cover are fixedly connected with air outlet No. 1; the air outlet No. 1 on the upper collecting cover and the lower collecting cover are both inclined toward the outside; the upper collecting cover is fixedly connected with a blower No. 1; the output end of the blower No. 1 is connected to the air outlet No. 1, and the input end of the blower No. 1 is connected to the outside air.

[0010] The PTFE base cloth is covered from top to bottom by the upper collecting hood and the lower collecting cover, and then air curtains are blown out on the left and right sides of the upper collecting hood and the lower collecting cover to isolate the outside air, thereby preventing the outside air from entering the upper collecting hood and the lower collecting block, thereby preventing the outside air from entering, causing the total amount of exhaust gas to increase while the exhaust gas concentration to decrease.

[0011] Preferably, both sides of the upper collecting cover and the lower collecting cover are fixedly connected with a No. 2 air outlet; the No. 2 air outlet is inclined toward the collecting cover and the inside of the collecting cover; the No. 2 hair dryer is fixedly connected to the collecting cover; the input end of the No. 2 hair dryer is located in the collecting cover, and the output end of the No. 2 hair dryer is connected to the No. 2 air outlet.

[0012] Preferably, the second hair dryer is a hot air blower.

[0013] By setting an air curtain on the inner side of the left and right sides of the upper collecting cover and the lower collecting cover, cooperating with the outer air curtain, the outer air curtain prevents outside air from entering the upper collecting cover and the lower collecting cover from both sides, and the inner air curtain prevents the exhaust gas in the upper collecting cover and the lower collecting cover from leaking from both sides. At the same time, the inner air curtain can heat the upper collecting cover and the lower collecting cover, thereby accelerating the volatilization of the exhaust gas in the upper collecting cover and the lower collecting cover.

[0014] Preferably, the upper collecting cover and the lower collecting cover are both provided with sliding grooves; the mounting plate is slidably connected in the sliding grooves.

[0015] Preferably, spoilers are fixedly connected to the upper collecting cover and the lower collecting cover; the spoilers are staggered up and down.

[0016] Preferably, an arc-shaped diverter plate is fixedly connected to the upper collecting cover and the lower collecting cover; and the second air outlet is arranged toward the diverter plate.

[0017] Preferably, the first air outlet and the second air outlet are both fixedly connected with a connecting rod; and the connecting rod is fixedly connected with a second air pressure sensor.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention covers the PTFE base cloth from top to bottom through the upper collecting cover and the lower collecting cover, and then blows out air curtains on the left and right sides of the upper collecting cover and the lower collecting cover, so that the air curtains isolate the outside air, thereby preventing the outside air from entering the upper collecting cover and the lower collecting block, thereby preventing the outside air from entering, causing the total amount of exhaust gas to increase while the exhaust gas concentration to decrease.

[0020] 2. The present invention sets an air curtain on the inner side of the left and right sides of the upper collecting cover and the lower collecting cover, which cooperates with the outer air curtain. The outer air curtain prevents outside air from entering the upper collecting cover and the lower collecting cover from both sides, and the inner air curtain prevents the exhaust gas in the upper collecting cover and the lower collecting cover from leaking from both sides. At the same time, the inner air curtain can heat the upper collecting cover and the lower collecting cover, thereby accelerating the volatilization of the exhaust gas in the upper collecting cover and the lower collecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 A partial cross-sectional view of the upper collecting hood and the lower collecting cover of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 It is a partial cross-sectional view of the upper collecting cover and the collecting pipe in the present invention.

[0026] In the figure: 1. Exhaust gas purification mechanism; 3. Exhaust gas collection mechanism; 31. Upper collection cover; 32. Lower collection cover; 33. Collection pipe; 34. Mounting plate; 35. Solenoid valve; 36. Air pressure sensor No. 1; 37. Inlet pipe; 4. Air outlet No. 1; 41. Blower No. 1; 42. Air outlet No. 2; 43. Blower No. 2; 5. Sliding groove; 51. Spoiler; 52. Connecting rod; 53. Air pressure sensor No. 2; 54. Diverter plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Refer to the attached Figure 1 、 2, 3, 4 and 5, a waste gas treatment device for PTFE base cloth production, comprising:

[0029] Exhaust gas purification mechanism 1 and exhaust gas collection mechanism 3; the exhaust gas collection mechanism 3 includes an upper collection cover 31, a lower collection cover 32, a collection pipe 33 and a suction fan; the collection pipe 33 is fixedly connected and connected to the upper collection cover 31; the upper collection cover 31 and the lower collection block are both equipped with mounting plates 34; the lower collection cover 32 can block the lower end of the upper collection cover 31; the suction fan is fixedly connected to the upper collection cover 31; the connecting pipe is fixedly connected and connected to a solenoid valve 35; a No. 1 air pressure sensor 36 is fixedly connected to the position near the connecting pipe in the collection cover; the lower collection cover 32 is fixedly connected and connected to an air intake pipe 37; the air intake pipe 37 is also fixedly connected and connected to a solenoid valve 35.

[0030] In the present invention, both sides of the upper collecting cover 31 and the lower collecting cover 32 are fixedly connected with the No. 1 air outlet 4; the No. 1 air outlet 4 on the upper collecting cover 31 and the lower collecting cover 32 are both inclined toward the outside; the upper collecting cover 31 is fixedly connected with the No. 1 blower 41; the output end of the No. 1 blower 41 is connected to the No. 1 air outlet 4, and the input end of the No. 1 blower 41 is connected to the outside air.

[0031] In the present invention, during the emulsion spinning of the PTFE fibers and the drying of the PTFE base fabric, the upper collecting cover 31 is located above the PTFE fiber line or the PTFE base fabric, and the lower collecting cover 32 is located below. The upper collecting cover 31 and the lower collecting cover 32 are closed, so that the front and back sides are sealed. The PTFE fiber line or the PTFE base fabric enters and exits from the left and right sides of the upper collecting cover 31 and the lower collecting cover 32, passing through the upper collecting cover 31 and the lower collecting cover 32.

[0032] The blower 41 blows air into the air outlet 4, causing the flat air outlet 4 to blow out a curtain of air. The air outlets 41 on the upper collecting cover 31 and the lower collecting cover 32 are tilted outward, causing the air curtains on the upper collecting cover 31 and the lower collecting cover 32 to blow outward, thereby isolating the outside air and preventing the outside air from entering the upper collecting cover 31 and the lower collecting cover 32 from both sides.

[0033] The suction fan rotates to blow the air in the upper collecting hood 31 and the lower collecting cover 32 into the collecting pipe 33. The No. 1 pressure sensor detects the air pressure in the collecting hood and the collecting cover. When the set threshold is reached, the solenoid valve 35 on the collecting pipe 33 opens, so that the air in the upper collecting hood 31 and the lower collecting cover 32 flows into the collecting pipe 33. As a result, the waste gas generated by the volatilization of the PTFE fiber line or PTFE base cloth in the upper collecting hood 31 and the lower collecting cover 32 enters the collecting pipe 33, and then enters the waste gas purification mechanism 1 through the collecting pipe 33. The waste gas purification mechanism 1 performs waste gas treatment on the waste gas. The waste gas purification mechanism 1 sprays alkaline solution to absorb the fluorine-containing part of the waste gas, and then burns the organic waste gas part.

[0034] The present invention covers the PTFE base cloth from top to bottom through the upper collecting cover 31 and the lower collecting cover 32, and then blows out air curtains on the left and right sides of the upper collecting cover 31 and the lower collecting cover 32, so that the air curtains isolate the outside air, thereby preventing the outside air from entering the upper collecting cover 31 and the lower collecting block, thereby preventing the outside air from entering, causing the total amount of exhaust gas to increase while the exhaust gas concentration to decrease.

[0035] In the present invention, a No. 2 air outlet 42 is fixedly connected to both sides of the upper collecting hood 31 and the lower collecting cover 32; the No. 2 air outlet 42 is inclined toward the collecting hood and the collecting cover; a No. 2 blower 43 is fixedly connected to the collecting hood; the input end of the No. 2 blower 43 is located in the collecting hood, and the output end of the No. 2 blower 43 is connected to the No. 2 air outlet.

[0036] In the present invention, the second hair dryer 43 is selected to be a hot air blower.

[0037] In the present invention, an air curtain is also provided on the inner side of the upper collection hood 31 and the lower collection cover 32. The air source of the air curtain comes from the upper collection hood 31 and the lower collection cover 32. When blowing inward, an additional airflow barrier can be built inside. This barrier can effectively resist the exhaust gas disturbance caused by the outer air curtain, preventing the exhaust gas from being carried to the outside and leaking. In addition, since the air source of the inner air curtain is the exhaust gas in the collection hood, the concentration of the internal exhaust gas will not be changed due to the introduction of air of different properties from the outside during the blowing process.

[0038] In the present invention, the second blower 43 is selected as a hot air blower. Therefore, when the inner air curtain blows, it can heat the air in the upper collection cover 31 and the lower collection cover 32, thereby heating and drying the PTFE fiber line or PTFE base cloth in the upper collection cover 31 and the lower collection cover 32, accelerating the volatilization of the exhaust gas. At the same time, the air in the upper collection cover 31 and the lower collection cover 32 is continuously circulated through the second blower 43 and the second air outlet 42, passing through the PTFE fiber line or PTFE base cloth, thereby continuously removing the exhaust gas from the PTFE fiber line or PTFE base cloth, thereby increasing the concentration of the exhaust gas in the upper collection cover 31 and the lower collection cover 32.

[0039] The present invention sets an air curtain on the inner side of the left and right sides of the upper collecting cover 31 and the lower collecting cover 32, which cooperates with the outer air curtain. The outer air curtain prevents outside air from entering the upper collecting cover 31 and the lower collecting cover 32 from both sides, and the inner air curtain prevents the exhaust gas in the upper collecting cover 31 and the lower collecting cover 32 from leaking from both sides. At the same time, the inner air curtain can heat the upper collecting cover 31 and the lower collecting cover 32, thereby accelerating the volatilization of the exhaust gas in the upper collecting cover 31 and the lower collecting cover 32.

[0040] Example 2: Based on Example 1, refer to the attached Figure 1、 2 , 3, 4 and 5, in the present invention, a sliding groove 5 is provided on the upper collecting cover 31 and the lower collecting cover 32; the mounting plate 34 is slidably connected in the sliding groove 5.

[0041] In the present invention, spoilers 51 are fixedly connected to the upper collecting cover 31 and the lower collecting cover 32; the spoilers 51 are staggered up and down.

[0042] In the present invention, an arc-shaped diverter plate 54 is fixedly connected to both the upper collecting cover 31 and the lower collecting cover 32 ; the second air outlet 42 is arranged toward the diverter plate 54 .

[0043] In the present invention, a connecting rod 52 is fixedly connected to both the first air outlet 4 and the second air outlet 42 ; and a second air pressure sensor 53 is fixedly connected to the connecting rod 52 .

[0044] In the present invention, the mounting plate 34 is slidably connected to the sliding groove 5, and the upper and lower positions of the first air outlet 4 and the second air outlet 42 are moved by sliding the mounting plate 34, and the mounting plate 34 is fixed by squeezing the bolts, so that the positions of the first air outlet 4 and the second air outlet 42 can be adjusted;

[0045] In the present invention, spoilers 51 are provided in the upper collecting cover 31 and the lower collecting cover 32 to prevent the exhaust gas blown out of the second air outlet 42 from forming a backflow in the upper collecting cover 31 and the lower collecting cover 32, thereby disturbing the PTFE fiber line or the PTFE base fabric. At the same time, a diverter plate 54 is provided so that the exhaust gas blown out of the second air outlet 42 moves along the curved surface of the diverter plate 54, thereby preventing the exhaust gas blown out of the second air outlet 42 from directly impacting the PTFE fiber line or the PTFE base fabric.

[0046] In the present invention, a No. 2 air pressure sensor 53 is provided on the No. 1 air outlet 4 and the No. 2 air outlet 42, which can detect the wind pressure of the wind curtain blown by the No. 1 air outlet 4 and the No. 2 air outlet 42, thereby adjusting the power of the No. 1 hair dryer 41 and the No. 2 hair dryer 43 according to the wind pressure, so that the wind pressure blown out by the No. 1 air outlet 4 and the No. 2 air outlet 42 is equal, so that there will be no difference in wind pressure, which will affect the effect of the wind curtain.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention as claimed. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for PTFE base cloth production, characterized by: include An exhaust gas purification mechanism (1) and an exhaust gas collection mechanism (3); the exhaust gas collection mechanism (3) comprises an upper collection cover (31), a lower collection cover (32), a collection pipe (33) and a suction fan; the collection pipe (33) is fixedly connected to and communicated with the upper collection cover (31); a mounting plate (34) is installed on both the upper collection cover (31) and the lower collection cover (32); the lower collection cover (32) can block the lower end of the upper collection cover (31); the suction fan is fixedly connected to the upper collection cover (31); the collection pipe (33) is fixedly connected to and communicated with a solenoid valve (35); a No. 1 air pressure sensor (36) is fixedly connected to a position near the collection pipe (33) in the upper collection cover (31); an air intake pipe (37) is fixedly connected to and communicated with the lower collection cover (32); the air intake pipe (37) is also fixedly connected to and communicated with the solenoid valve (35); Both sides of the upper collecting cover (31) and the lower collecting cover (32) are fixedly connected to a No. 1 air outlet (4); the No. 1 air outlet (4) on the upper collecting cover (31) and the lower collecting cover (32) are both inclined toward the outside; a No. 1 blower (41) is fixedly connected to the upper collecting cover (31); the output end of the No. 1 blower (41) is connected to the No. 1 air outlet (4), and the input end of the No. 1 blower (41) is connected to the outside air; A second air outlet (42) is fixedly connected to both sides of the upper collecting cover (31) and the lower collecting cover (32); the second air outlet (42) is tilted toward the inside of the upper collecting cover (31) and the lower collecting cover (32); a second blower (43) is fixedly connected to the upper collecting cover (31); an input end of the second blower (43) is located in the upper collecting cover (31), and an output end of the second blower (43) is connected to the second air outlet (42); The first air outlet (4) and the second air outlet (42) are both fixedly connected with a connecting rod (52); the connecting rod (52) is fixedly connected with a second air pressure sensor (53); A second air pressure sensor (53) is provided on the first air outlet (4) and the second air outlet (42), and is capable of detecting the wind pressure of the wind curtain blown by the first air outlet (4) and the second air outlet (42), thereby adjusting the power of the first blower (41) and the second blower (43) according to the wind pressure, so that the wind pressure blown out by the first air outlet (4) and the second air outlet (42) is equal, thereby preventing a situation in which a wind pressure difference occurs and the effect of the wind curtain is affected.

2. The waste gas treatment equipment for PTFE base cloth production according to claim 1, characterized in that: The second hair dryer (43) is selected to be a hot air blower.

3. The waste gas treatment equipment for PTFE base cloth production according to claim 2, characterized in that: The upper collecting cover (31) and the lower collecting cover (32) are both provided with a sliding groove (5); the mounting plate (34) is slidably connected in the sliding groove (5).

4. The waste gas treatment equipment for PTFE base cloth production according to claim 3, characterized in that: Spoilers (51) are fixedly connected inside the upper collecting cover (31) and the lower collecting cover (32); the spoilers (51) are arranged in an upper and lower staggered manner.

5. The waste gas treatment equipment for PTFE base cloth production according to claim 4, characterized in that: An arc-shaped diverter plate (54) is fixedly connected to both the upper collecting cover (31) and the lower collecting cover (32); the second air outlet (42) is arranged toward the diverter plate (54).

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