Waste gas treatment equipment for PTFE base cloth production

Abstract

The invention relates to the technical field of waste gas treatment devices, in particular to PTFE base cloth production waste gas treatment equipment which comprises a waste gas purification mechanism and a waste gas collection mechanism. The waste gas collecting mechanism comprises an upper collecting cover, a lower collecting cover, a collecting pipeline and a suction fan; the suction fan is fixedly connected to the upper collecting cover; the connecting pipeline is fixedly connected and communicated with an electromagnetic valve; a first air pressure sensor is fixedly connected to the position, close to the connecting pipeline, in the collecting cover. The lower collecting cover is fixedly connected and communicated with an air inlet pipe; the air inlet pipe is also fixedly connected and communicated with an electromagnetic valve; the PTFE base cloth is vertically covered with the upper collecting cover and the lower collecting cover, and then air curtains are blown out of the left sides and the right sides of the upper collecting cover and the lower collecting cover, so that the air curtains isolate external air, the external air is prevented from entering the upper collecting cover and the lower collecting cover, and the air collecting efficiency is improved. The total amount of the waste gas is increased and the concentration of the waste gas is reduced.

Description

Technical Field

[0001] The 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 a fabric made of polytetrafluoroethylene as the main raw material. It has excellent chemical stability and can withstand strong acids and alkalis. It is used for conveyor belts and sealing materials in industry, for exhaust gas filtration in the environmental protection field, and for outdoor clothing in the clothing field. In the emulsion spinning process of PTFE fiber, some organic solvents are used to disperse PTFE resin, such as ammonium perfluorooctanoate (PFOA) as an emulsifier. In the processes of drawing, heating, drying, etc., 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 processes 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; When the exhaust gas treatment equipment collects the exhaust gas, a hood suction method is usually adopted. Therefore, in the process of collecting the exhaust gas, air will be inhaled, thereby reducing the concentration of the collected exhaust gas. Therefore, the total amount of exhaust gas that needs to be treated in the subsequent exhaust gas treatment increases, which causes limitations.

[0003] To this end, we propose an exhaust gas treatment device for PTFE base fabric production. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an exhaust gas treatment device for PTFE base cloth production, which overcomes the deficiencies in the prior art and aims to solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an exhaust gas treatment device for PTFE base cloth production, comprising: 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 of the connecting pipe in the collection cover; the lower collection cover is fixedly connected to and connected with an intake pipe; the intake pipe is also fixedly connected to and connected with a solenoid valve.

[0006] Preferably, both sides of the upper collecting cover and the lower collecting cover are fixedly connected to the No. 1 air outlet; the No. 1 air outlet on the upper collecting cover and the lower collecting cover are both inclined toward the outside; the upper collecting cover is fixedly connected to the No. 1 hair dryer; the output end of the No. 1 hair dryer is connected to the No. 1 air outlet, and the input end of the No. 1 hair dryer is connected to the outside air.

[0007] 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, 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, causing the total amount of exhaust gas to increase while the exhaust gas concentration to decrease.

[0008] 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; a 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.

[0009] Preferably, the second hair dryer is a hot air blower.

[0010] By setting another wind 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 wind curtain, the outer wind curtain prevents the outside air from entering the upper collecting cover and the lower collecting cover from both sides, and the inner wind 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 wind 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.

[0011] Preferably, the upper collecting cover and the lower collecting cover are both provided with sliding grooves; and the mounting plate is slidably connected in the sliding grooves.

[0012] Preferably, spoilers are fixedly connected inside the upper collecting cover and the lower collecting cover; the spoilers are staggered up and down.

[0013] Preferably, an arc-shaped diverter plate is fixedly connected inside the upper collecting cover and the lower collecting cover; and the second air outlet is arranged toward the diverter plate.

[0014] Preferably, the first air outlet and the second air outlet are both fixedly connected with connecting rods; and the connecting rods are fixedly connected with a second air pressure sensor.

[0015] Beneficial effects of the present invention: 1. The present invention covers the PTFE base cloth from top to bottom by 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, causing the total amount of exhaust gas to increase while the exhaust gas concentration to decrease.

[0016] 2. The present invention sets another wind 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 wind curtain. The outer wind curtain prevents the outside air from entering the upper collecting cover and the lower collecting cover from both sides, and the inner wind 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 wind curtain can heat the upper collecting cover and the lower collecting cover to accelerate the volatilization of the exhaust gas in the upper collecting cover and the lower collecting cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 It is a partial cross-sectional view of the upper collecting hood and the lower collecting cover of the present invention; Figure 4 for Figure 3 The enlarged view of point B in the middle; Figure 5 It is a partial cross-sectional view of the upper collecting hood and the collecting pipe in the present invention.

[0018] In the figure: 1. exhaust gas purification mechanism; 3. exhaust gas collecting mechanism; 31. upper collecting hood; 32. lower collecting cover; 33. collecting pipe; 34. mounting plate; 35. solenoid valve; 36. air pressure sensor No. 1; 37. air intake 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

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: Refer to the attached specification Figure 1 , 2 , 3, 4 and 5, a waste gas treatment device for PTFE base fabric production, comprising: An exhaust gas purification mechanism 1 and an exhaust gas collecting mechanism 3; the exhaust gas collecting mechanism 3 comprises an upper collecting hood 31, a lower collecting cover 32, a collecting pipe 33 and a suction fan; the collecting pipe 33 is fixedly connected and connected to the upper collecting hood 31; a mounting plate 34 is installed on both the upper collecting hood 31 and the lower collecting block; the lower collecting cover 32 can block the lower end of the upper collecting hood 31; the suction fan is fixedly connected to the upper collecting hood 31; a solenoid valve 35 is fixedly connected to the connecting pipe; a No. 1 air pressure sensor 36 is fixedly connected to the position of the connecting pipe in the collecting hood; an air intake pipe 37 is fixedly connected and connected to the lower collecting cover 32; and the air intake pipe 37 is also fixedly connected and connected to the solenoid valve 35.

[0021] In the present invention, both sides of the upper collecting cover 31 and the lower collecting cover 32 are fixedly connected to 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 to the No. 1 hair dryer 41; the output end of the No. 1 hair dryer 41 is connected to the No. 1 air outlet 4, and the input end of the No. 1 hair dryer 41 is connected to the outside air.

[0022] In the present invention, during the emulsion spinning of the PTFE fiber 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 rear sides are sealed, and 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; The first blower 41 blows air into the first air outlet 4, so that the flat first air outlet blows out a wind curtain. The first air outlets on the upper collecting cover 31 and the lower collecting cover 32 are tilted toward the outside, so that the wind curtains on the upper collecting cover 31 and the lower collecting cover 32 are blown toward the outside, so that the wind curtain isolates the outside air and prevents the outside air from entering the upper collecting cover 31 and the lower collecting cover 32 from both sides; 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. 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 alkali solution to absorb the fluorine-containing part of the waste gas, and then burns the organic waste gas part. The present invention covers the PTFE base cloth from top to bottom by the upper collecting hood 31 and the lower collecting cover 32, and then blows out wind curtains on the left and right sides of the upper collecting hood 31 and the lower collecting cover 32, so that the wind curtains isolate the outside air, thereby preventing the outside air from entering the upper collecting hood 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.

[0023] In the present invention, both sides of the upper collecting cover 31 and the lower collecting cover 32 are fixedly connected with a No. 2 air outlet 42; the No. 2 air outlet 42 is inclined toward the collecting cover and the collecting cover; a No. 2 hair dryer 43 is fixedly connected to the collecting cover; the input end of the No. 2 hair dryer 43 is located in the collecting cover, and the output end of the No. 2 hair dryer 43 is connected to the No. 2 air outlet.

[0024] In the present invention, the second hair dryer 43 is selected as a hot air blower.

[0025] In the present invention, an air curtain is also arranged on the inner side of the upper collecting cover 31 and the lower collecting cover 32, and the air source of the air curtain comes from the upper collecting cover 31 and the lower collecting cover 32. When blowing inward, an additional airflow barrier can be constructed inside. This barrier can effectively resist the exhaust gas disturbance caused by the outer air curtain, and prevent 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 collecting cover, during the blowing process, the concentration of the internal exhaust gas will not be changed due to the introduction of air of different properties from the outside. In the present invention, the second blower 43 is selected as a hot air blower, so when the inner wind curtain blows, the air in the upper collecting cover 31 and the lower collecting cover 32 can be heated, so that the PTFE fiber line or PTFE base cloth in the upper collecting cover 31 and the lower collecting cover 32 can be heated and dried, and the volatilization of the exhaust gas can be accelerated. At the same time, the air in the upper collecting cover 31 and the lower collecting cover 32 is continuously circulated through the second blower 43 and the second air outlet 42, and passes through the PTFE fiber line or PTFE base cloth, thereby continuously taking away the exhaust gas from the PTFE fiber line or PTFE base cloth, thereby increasing the concentration of the exhaust gas in the upper collecting cover 31 and the lower collecting cover 32; The present invention arranges another wind 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 wind curtain. The outer wind curtain prevents the outside air from entering the upper collecting cover 31 and the lower collecting cover 32 from both sides, and the inner wind 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 wind 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.

[0026] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 1 , 2, 3, 4 and 5, in the present invention, 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.

[0027] In the present invention, spoilers 51 are fixedly connected inside the upper collecting cover 31 and the lower collecting cover 32; the spoilers 51 are arranged alternately up and down.

[0028] In the present invention, an arc-shaped splitter plate 54 is fixedly connected inside the upper collecting cover 31 and the lower collecting cover 32 ; the second air outlet 42 is arranged toward the splitter plate 54 .

[0029] In the present invention, the first air outlet 4 and the second air outlet 42 are both fixedly connected with a connecting rod 52 ; and the second air pressure sensor 53 is fixedly connected to the connecting rod 52 .

[0030] In the present invention, the mounting plate 34 is slidably connected in 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; 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 to disturb the PTFE fiber line or the PTFE base cloth, and a diverter plate 54 is provided at the same time, so that the exhaust gas blown out of the second air outlet 42 moves along the arc-shaped 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 cloth; 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, so as to adjust 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.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected; the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A waste gas treatment device for PTFE base fabric production, characterized in that: 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 connected to the upper collection cover (31); a mounting plate (34) is installed on both the upper collection cover (31) and the lower collection block; the lower collection cover (32) is capable of blocking the lower end of the upper collection cover (31); the suction fan is fixedly connected to the upper collection cover (31); a solenoid valve (35) is fixedly connected to the connecting pipe and connected to the connection pipe; a No. 1 air pressure sensor (36) is fixedly connected to a position in the collection cover close to the connecting pipe; an air intake pipe (37) is fixedly connected to and connected to the lower collection cover (32); and the air intake pipe (37) is also fixedly connected to and connected to the solenoid valve (35).

2. The waste gas treatment equipment for PTFE base fabric production according to claim 1, characterized in that: 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 arranged to be inclined toward the outside; a No. 1 blower (41) is fixedly connected to the upper collecting cover (31); an output end of the No. 1 blower (41) is connected to the No. 1 air outlet (4), and an input end of the No. 1 blower (41) is connected to the outside air.

3. The waste gas treatment equipment for PTFE base fabric production according to claim 2, characterized in that: A No. 2 air outlet (42) is fixedly connected to both sides of the upper collecting cover (31) and the lower collecting cover (32); the No. 2 air outlet (42) is arranged to be inclined toward the collecting cover and the inside of the collecting cover; a No. 2 blower (43) is fixedly connected to the collecting cover; an input end of the No. 2 blower (43) is located inside the collecting cover, and an output end of the No. 2 blower (43) is communicated with the No. 2 blower outlet.

4. The waste gas treatment equipment for PTFE base fabric production according to claim 3, characterized in that: The second hair dryer (43) is selected to be a hot air blower.

5. The waste gas treatment equipment for PTFE base fabric production according to claim 4, 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).

6. The waste gas treatment equipment for PTFE base fabric production according to claim 5, characterized in that: Spoilers (51) are fixedly connected inside the upper collecting hood (31) and the lower collecting cover (32); the spoilers (51) are arranged in an upper and lower staggered manner.

7. The waste gas treatment equipment for PTFE base fabric production according to claim 6, characterized in that: An arc-shaped flow divider plate (54) is fixedly connected inside the upper collection cover (31) and the lower collection cover (32); the second air outlet (42) is arranged toward the flow divider plate (54).

8. The waste gas treatment equipment for PTFE base fabric production according to claim 7, characterized in that: The first air outlet (4) and the second air outlet (42) are both fixedly connected with a connecting rod (52); and the connecting rod (52) is fixedly connected with a second air pressure sensor (53).

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