Pultrusion die outlet waste gas collecting device and method

Abstract

The invention provides a pultrusion die outlet waste gas collecting device and method, and belongs to the technical field of composite material forming equipment, the pultrusion die outlet waste gas collecting device comprises a sealing cover shell, a first connecting pipe and a second connecting pipe, the sealing cover shell is hollow, the rear side of the sealing cover shell is open, and the rear side of the sealing cover shell is fixed to the outlet end of a pultrusion die; the first connecting pipe and the second connecting pipe are fixed to the two sides of the sealing cover shell respectively, the first connecting pipe is communicated with the ventilation pipeline through a pipeline, and the second connecting pipe is connected with the negative pressure end of the environmental protection equipment through a pipeline. Waste gas dissipation is avoided, pollution to the air environment is reduced, and meanwhile tar and debris residues are prevented from polluting the mold containing table.

Description

Technical Field

[0001] This invention belongs to the technical field of composite material molding equipment, and particularly relates to a pultrusion die outlet exhaust gas collection device and method. Background Technology

[0002] Glass fiber pultruded sheets are glass fiber reinforced composite profiles with a fixed cross-section, manufactured through the pultrusion process using continuous glass fiber yarn impregnated with epoxy resin. The pultrusion die is a key component in the pultrusion process; it is a precisely heated, long steel mold with a specific cross-sectional cavity. The resin-impregnated reinforcing fiber material is passed through the pultrusion die under tremendous traction force, where it is heated, compressed, and cured, ultimately forming a composite profile with a constant cross-section.

[0003] During pultrusion molding, a high-temperature waste gas with an irritating odor is generated. The waste gas is discharged from the mold outlet, polluting the air environment and deteriorating the working environment.

[0004] Traditional waste gas collection devices involve placing a high-temperature resistant silicone pipe at the mold outlet, with the pipe end shaped like a flared mouth. The waste gas is then sent to the environmental protection equipment under negative pressure. However, this method results in a significant amount of waste gas escaping, leaving a strong pungent odor inside the workshop.

[0005] In addition, after the production line has been running for a long time, tar, debris and residue will drip from the mold outlet, contaminating the mold placement table. Summary of the Invention

[0006] In view of the defects or deficiencies in the prior art, the present invention provides a pultrusion die outlet exhaust gas collection device and method, which can prevent exhaust gas from escaping and polluting the air environment, and at the same time prevent tar and debris residue from contaminating the die placement platform.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, embodiments of the present invention provide a pultrusion die outlet exhaust gas collection device, including a sealing cover, a first connecting pipe and a second connecting pipe. The sealing cover is hollow inside and has an opening on the rear side. The rear side of the sealing cover is fixed to the outlet end of the pultrusion die. The first connecting pipe and the second connecting pipe are respectively fixed on both sides of the sealing cover. The first connecting pipe is connected to a ventilation duct through a pipe, and the second connecting pipe is connected to the negative pressure end of an environmental protection device through a pipe.

[0008] Furthermore, the sealing cover includes a shell and a cover plate, the cover plate is placed on top of the shell, the longitudinal section of the shell is U-shaped, including a bottom plate and side plates vertically arranged on both sides of the bottom plate, and the two ends of the cover plate are in contact with the side plates respectively.

[0009] Furthermore, a connecting groove is provided at the top of the side plate, and connecting plates are provided at both ends of the cover plate, with the width of the connecting plates being the same as the width of the connecting groove.

[0010] Furthermore, a first mounting plate is provided on the rear side of the housing. The first mounting plate is U-shaped and includes a first lower mounting plate and first side mounting plates vertically arranged on both sides of the first lower mounting plate. The first lower mounting plate is connected to the bottom plate and is arranged perpendicular to the bottom plate. The two first side mounting plates are respectively connected to the two side plates and are respectively arranged perpendicular to the two side plates. Multiple bolt holes are provided on the two first side mounting plates.

[0011] Furthermore, a second mounting plate is provided on the front side of the housing. The second mounting plate is U-shaped and includes a second lower mounting plate and second side mounting plates vertically arranged on both sides of the second lower mounting plate. The second lower mounting plate is connected to the bottom plate and is arranged perpendicular to the bottom plate. The two second side mounting plates are respectively connected to the two side plates and are respectively arranged perpendicular to the two side plates. Two first mounting holes are arranged side by side on the second side mounting plate, and the first mounting holes on the two second side mounting plates are symmetrically arranged.

[0012] Furthermore, the housing is connected to the front baffle via a second mounting plate. The front baffle includes an upper baffle and a lower baffle. The upper baffle is located above the lower baffle. The upper baffle and the lower baffle have the same height, both less than half the height of the housing.

[0013] Furthermore, the upper baffle and the lower baffle are symmetrically provided with second mounting holes on both sides. The second mounting holes are elliptical and are provided in correspondence with the first mounting holes. A nut is fixed on the side of the first mounting hole away from the front baffle, and a hand-tightening bolt is threaded onto the nut.

[0014] Furthermore, oil-absorbing cotton is fixed on the upper surface of the bottom plate of the shell, the bottom surface of the cover plate, and the inner surfaces of the upper and lower baffles. The oil-absorbing cotton is detachably connected to the shell, the cover plate, the upper baffle, and the lower baffle, respectively.

[0015] Furthermore, pressure plates are provided at both ends of the bottom surface of the cover plate, and the pressure plates are fixedly connected to the cover plate by bolts. The oil-absorbing cotton is placed between the cover plate and the pressure plates at both ends.

[0016] Secondly, embodiments of the present invention provide a method for collecting exhaust gas from the outlet of a pultrusion die, utilizing the exhaust gas collection device for the outlet of a pultrusion die as described above, comprising the following steps: First, fix the rear side of the housing to the outlet end of the pultrusion mold. Then, fix oil-absorbing cotton to the bottom plate, cover plate, upper baffle, and lower baffle of the housing. Place the cover plate on the top of the housing to cover the top of the housing. Fix the upper baffle and lower baffle to the front side of the housing. The upper baffle, lower baffle, and cover plate cover the front and top of the housing respectively to prevent the exhaust gas from the outlet end of the waste mold from drifting out and polluting the air in the workshop. Adjust the gap between the upper and lower baffles according to the size of the sheet material being produced to facilitate the removal of the sheet material from the pultrusion die outlet. The first connecting pipe is connected to the ventilation duct through a pipe to introduce air. The second connecting pipe is connected to the negative pressure end of the environmental protection equipment through a pipe. The negative pressure generated by the environmental protection equipment is used to draw the waste gas into the environmental protection equipment for treatment.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention seals the mold outlet by fixing a sealing cover. At the same time, the first and second connecting pipes on both sides of the sealing cover are connected to the ventilation duct and the negative pressure end of the environmental protection equipment, respectively. The negative pressure generated by the environmental protection equipment is used to adsorb the waste gas into the environmental protection equipment for subsequent treatment, thereby reducing the escape of waste gas and ensuring that there is no irritating odor in the workshop.

[0018] 2. This invention sets up an upper baffle and a lower baffle, which are connected to the housing by hand-tightening bolts. The gap between the upper baffle and the lower baffle can be adjusted according to the size of the profile, so as to minimize the emission of waste while ensuring the normal passage of the profile.

[0019] 3. This invention uses oil-absorbing cotton fixed to the shell, cover plate, upper baffle and lower baffle to absorb dripping tar. At the same time, the cover plate is detachably connected to the shell, so the cover plate can be lifted at any time to clean the debris and residue inside the shell and prevent contamination of the mold placement platform. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the waste gas collection device in Embodiment 1 of the present invention; Figure 2 This is a diagram showing the connection between the waste gas collection device and the waste mold in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the shell structure in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the cover plate structure in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the upper baffle structure in Embodiment 1 of the present invention; The components include: 1. Sealing cover; 2. First connecting pipe; 3. Second connecting pipe; 4. Housing; 401. Base plate; 402. Side plate; 403. Connecting groove; 404. First mounting plate; 405. Second mounting plate; 406. First mounting hole; 5. Cover plate; 501. Connecting plate; 502. Pressure plate; 503. Second fixing hole; 6. Upper baffle; 601. Second mounting hole; 7. Lower baffle; 8. Hand-tightening bolt; 9. Oil-absorbing cotton; 10. Pultrusion die. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1 A typical embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a pultrusion die outlet exhaust gas collection device includes a sealing cover 1, a first connecting pipe 2, and a second connecting pipe 3. The sealing cover 1 is hollow inside and has an opening on the rear side. The rear side of the sealing cover 1 is fixed to the outlet end of the pultrusion die 10. The first connecting pipe 2 and the second connecting pipe 3 are respectively fixed on both sides of the sealing cover 1. The first connecting pipe 2 is connected to a ventilation duct through a pipe for air introduction. The second connecting pipe 3 is connected to the negative pressure end of an environmental protection device through a pipe. The negative pressure generated by the environmental protection device is used to adsorb the exhaust gas generated at the outlet end of the pultrusion die 10 into the environmental protection device for subsequent treatment.

[0022] Specifically, the sealing cover 1 includes a housing 4 and a cover plate 5, with the cover plate 5 covering the top of the housing 4, such as... Figure 3 As shown, the longitudinal section of the shell 4 is U-shaped and is formed by bending steel plate. It includes a bottom plate 401 and side plates 402 vertically arranged on both sides of the bottom plate 401. The width of the cover plate 5 is the same as the width of the shell 4. The two ends of the cover plate 5 are in contact with the two side plates 402 respectively, and the two side plates 402 support the cover plate 5.

[0023] A connecting groove 403 is provided at the top of the side plate 402. The connecting groove 403 is U-shaped, with a width smaller than the width of the side plate 402 and a depth greater than the thickness of the cover plate 5. A connecting plate 501 is provided at both ends of the cover plate 5. The connecting plate 501 is formed by extending the cover plate 5 to both sides. The width of the connecting plate 501 is the same as the width of the connecting groove 403. The length of the cover plate 5 is equal to the distance between the two side plates 402. When the cover plate 5 is placed on top of the housing 4, the connecting plates 501 at both ends of the cover plate 5 are located in the connecting groove 403. The connecting groove 403 is used to limit and support the connecting plates 501, so that the cover plate 5 can block the top of the housing 4 and prevent exhaust gas from drifting out from the top of the housing 4. At the same time, the cover plate 5 can be lifted directly from the top of the housing 4 to clean the inside of the housing 4.

[0024] A first mounting plate 404 is provided on the rear side of the housing 4. The first mounting plate 404 is U-shaped and includes a first lower mounting plate and first side mounting plates vertically arranged on both sides of the first lower mounting plate. The first lower mounting plate is connected to the bottom plate 401 and is arranged perpendicular to the bottom plate 401. The two first side mounting plates are respectively connected to the two side plates 402 and are respectively arranged perpendicular to the two side plates 402. Multiple bolt holes are provided on the two first side mounting plates, and the housing 4 can be fixed to the outlet end of the pultrusion die 10 by bolts.

[0025] A second mounting plate 405 is provided on the front side of the housing 4. The second mounting plate 405 is U-shaped and includes a second lower mounting plate and second side mounting plates vertically arranged on both sides of the second lower mounting plate. The second lower mounting plate is connected to the bottom plate 401 and is arranged perpendicularly to the bottom plate 401. The two second side mounting plates are respectively connected to the two side plates 402 and are respectively arranged perpendicularly to the two side plates 402. Two first mounting holes 406 are arranged side by side on the second side mounting plates, and the first mounting holes 406 on the two second side mounting plates are symmetrically arranged.

[0026] The housing 4 is connected to the front baffle via a second mounting plate 405. The front baffle includes an upper baffle 6 and a lower baffle 7. The upper baffle 6 is located above the lower baffle 7. The upper baffle 6 and the lower baffle 7 shield the front of the housing 4 to prevent exhaust gas from escaping from the front of the housing 4. The upper baffle 6 and the lower baffle 7 have the same height, both less than half the height of the housing 4. Figure 5 As shown, the upper baffle 6 and the lower baffle 7 are symmetrically provided with second mounting holes 601 on both sides. The second mounting holes 601 are corresponding to the first mounting holes 406. A nut is fixed on the side of the first mounting hole 406 away from the front baffle. The hand-tightening bolt 8 is passed through the second mounting holes 601 and the first mounting holes 406 in sequence and is threaded to the nut, thereby fixing the upper baffle 6 and the lower baffle 7 on the second mounting plate 405.

[0027] Furthermore, the second mounting hole 601 is elliptical. Since the heights of the upper baffle 6 and the lower baffle 7 are both less than half the height of the housing 4, the gap between the upper baffle 6 and the lower baffle 7 can be adjusted according to the different sizes of the production sheet material to avoid interference between the upper baffle 6 and the lower baffle 7 when the sheet material is taken out from the outlet end of the pultrusion die 10. The upper baffle 6 and the lower baffle 7 are fixed by hand-tightening bolts 8, which makes it convenient for the staff to manually adjust the gap between the upper baffle 6 and the lower baffle 7.

[0028] Oil-absorbing cotton 9 is fixed to the upper surface of the bottom plate 401 of the housing 4, the bottom surface of the cover plate 5, and the inner surfaces of the upper baffle 6 and the lower baffle 7 to absorb dripping tar. The oil-absorbing cotton 9 is detachably connected to the housing 4, the cover plate 5, the upper baffle 6, and the lower baffle 7, respectively. When the tar is fully absorbed, the oil-absorbing cotton 9 can be replaced. In this embodiment, the oil-absorbing cotton 9 is a commercially available oil-absorbing cotton that can withstand high temperatures.

[0029] The cover plate 5, upper baffle 6, and lower baffle 7 all use the same method to fix the oil-absorbing cotton 9. This explanation focuses on the method of fixing the oil-absorbing cotton 9 to the cover plate 5. Specifically, as follows... Figure 4As shown, multiple first fixing holes are provided at both ends of the cover plate 5. The multiple first fixing holes are arranged side by side along the width direction of the cover plate 5. Pressure plates 502 are provided at both ends of the bottom surface of the cover plate 5. Multiple second fixing holes 503 are provided on the pressure plates 502. The multiple second fixing holes 503 are corresponding to the multiple first fixing holes. Nuts are fixed on the side of the second fixing holes 503 away from the cover plate 5. Bolts are passed through the first fixing holes and the second fixing holes 503 in sequence and threadedly connected to the nuts, thereby fixing the pressure plate 502 to the bottom of the cover plate 5. In use, the two ends of the oil-absorbing cotton 9 are placed between the cover plate 5 and the pressure plate 502, and the bolts are tightened. The oil-absorbing cotton 9 is fixed to the bottom surface of the cover plate 5 by the pressure plate 502. When the oil-absorbing cotton 9 needs to be replaced, simply loosen the bolts to remove the oil-absorbing cotton 9.

[0030] Both sides of the housing 4 have connection holes in the middle of the side plates 402. One end of the first connecting pipe 2 and the second connecting pipe 3 are connected to the inside of the housing 4 through the connection holes. The first connecting pipe 2 is connected to the ventilation pipe through a pipe to introduce air. The second connecting pipe 3 is connected to the negative pressure pipe of the environmental protection equipment through a pipe, and finally the waste gas is sent to the environmental protection equipment for treatment.

[0031] Example 2 This embodiment provides a method for collecting exhaust gas from the outlet of a pultrusion die, utilizing an exhaust gas collection device for the outlet of a pultrusion die as described in Embodiment 1, including the following steps: First, fix the rear side of the housing to the outlet end of the pultrusion mold. Then, fix oil-absorbing cotton to the bottom plate, cover plate, upper baffle, and lower baffle of the housing. Place the cover plate on the top of the housing to cover the top of the housing. Fix the upper baffle and lower baffle to the front side of the housing. The upper baffle, lower baffle, and cover plate cover the front and top of the housing respectively to prevent the exhaust gas from the outlet end of the waste mold from drifting out and polluting the air in the workshop. Adjust the gap between the upper and lower baffles according to the size of the sheet material being produced to facilitate the removal of the sheet material from the pultrusion die outlet. The first connecting pipe is connected to the ventilation duct through a pipe to introduce air. The second connecting pipe is connected to the negative pressure end of the environmental protection equipment through a pipe. The negative pressure generated by the environmental protection equipment is used to draw the waste gas into the environmental protection equipment for treatment.

[0032] By fixing a sealing cover at the mold outlet, the mold outlet is sealed. At the same time, connecting pipes are set on both sides of the sealing cover to connect the ventilation duct and the negative pressure end of the environmental protection equipment respectively. The negative pressure generated by the environmental protection equipment is used to adsorb the waste gas into the environmental protection equipment for further treatment, reducing the escape of waste gas and ensuring that there is no irritating odor in the workshop.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pultrusion die outlet exhaust gas collection device, characterized in that, It includes a sealing cover, a first connecting pipe and a second connecting pipe. The sealing cover is hollow inside and has an opening on the rear side. The rear side of the sealing cover is fixed to the outlet end of the pultrusion die. The first connecting pipe and the second connecting pipe are respectively fixed on both sides of the sealing cover. The first connecting pipe is connected to a ventilation duct through a pipe, and the second connecting pipe is connected to the negative pressure end of the environmental protection equipment through a pipe.

2. The pultrusion die outlet exhaust gas collection device as described in claim 1, characterized in that, The sealing cover includes a shell and a cover plate. The cover plate is placed on top of the shell. The longitudinal section of the shell is U-shaped and includes a bottom plate and side plates vertically arranged on both sides of the bottom plate. The two ends of the cover plate are in contact with the side plates respectively.

3. The pultrusion die outlet exhaust gas collection device as described in claim 2, characterized in that, The top of the side plate is provided with a connecting groove, and both ends of the cover plate are provided with connecting plates, the width of which is the same as the width of the connecting groove.

4. The pultrusion die outlet exhaust gas collection device as described in claim 2, characterized in that, A first mounting plate is provided on the rear side of the housing. The first mounting plate is U-shaped and includes a first lower mounting plate and first side mounting plates vertically arranged on both sides of the first lower mounting plate. The first lower mounting plate is connected to the bottom plate and is arranged perpendicular to the bottom plate. The two first side mounting plates are respectively connected to the two side plates and are respectively arranged perpendicular to the two side plates. Multiple bolt holes are provided on the two first side mounting plates.

5. The pultrusion die outlet exhaust gas collection device as described in claim 2, characterized in that, A second mounting plate is provided on the front side of the housing. The second mounting plate is U-shaped and includes a second lower mounting plate and second side mounting plates vertically arranged on both sides of the second lower mounting plate. The second lower mounting plate is connected to the bottom plate and is perpendicular to the bottom plate. The two second side mounting plates are respectively connected to the two side plates and are respectively perpendicular to the two side plates. Two first mounting holes are arranged side by side on the second side mounting plates, and the first mounting holes on the two second side mounting plates are symmetrically arranged.

6. The pultrusion die outlet exhaust gas collection device as described in claim 5, characterized in that, The housing is connected to the front baffle via a second mounting plate. The front baffle includes an upper baffle and a lower baffle. The upper baffle is located above the lower baffle. The upper baffle and the lower baffle have the same height, both less than half the height of the housing.

7. The pultrusion die outlet exhaust gas collection device as described in claim 6, characterized in that, The upper and lower baffles are symmetrically provided with second mounting holes on both sides. The second mounting holes are elliptical and are provided in correspondence with the first mounting holes. A nut is fixed on the side of the first mounting hole away from the front baffle, and a hand-tightening bolt is threaded onto the nut.

8. The pultrusion die outlet exhaust gas collection device as described in claim 2, characterized in that, Oil-absorbing cotton is fixed on the upper surface of the bottom plate of the shell, the bottom surface of the cover plate, and the inner surfaces of the upper and lower baffles. The oil-absorbing cotton is detachably connected to the shell, the cover plate, the upper baffle and the lower baffle respectively.

9. The pultrusion die outlet exhaust gas collection device as described in claim 8, characterized in that, Pressure plates are provided at both ends of the bottom surface of the cover plate, and the pressure plates are fixedly connected to the cover plate by bolts. The oil-absorbing cotton is placed between the cover plate and the pressure plates at both ends.

10. A method for collecting exhaust gas from the outlet of a pultrusion die, utilizing a pultrusion die exhaust gas collection device as described in any one of claims 1-9, characterized in that, Includes the following steps: First, fix the rear side of the housing to the outlet end of the pultrusion mold. Then, fix oil-absorbing cotton to the bottom plate, cover plate, upper baffle, and lower baffle of the housing. Place the cover plate on the top of the housing to cover the top of the housing. Fix the upper baffle and lower baffle to the front side of the housing. The upper baffle, lower baffle, and cover plate cover the front and top of the housing respectively to prevent the exhaust gas from the outlet end of the waste mold from drifting out and polluting the air in the workshop. Adjust the gap between the upper and lower baffles according to the size of the sheet material being produced to facilitate the removal of the sheet material from the pultrusion die outlet. The first connecting pipe is connected to the ventilation duct through a pipe to introduce air. The second connecting pipe is connected to the negative pressure end of the environmental protection equipment through a pipe. The negative pressure generated by the environmental protection equipment is used to draw the waste gas into the environmental protection equipment for treatment.

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