Waste gas collecting device of calender

Abstract

The utility model relates to the technical field of calenders, in particular to a waste gas collecting device of a calender, which comprises a vertical column casing, a smooth roll and an extrusion roll which are distributed up and down are rotatably connected in the column casing, a gap for fabrics to pass through is arranged between the smooth roll and the extrusion roll, and a sealing component for preventing waste gas from diffusing outwards is arranged at a lower opening of the column casing. A collecting part for providing negative pressure and guiding hot gas and waste gas to move is arranged at an opening in the column casing; according to the utility model, the smooth roller is half wrapped by the column casing, the elastic roller and the extrusion roller are utilized to block the lower opening of the column casing and the inlet and outlet of the fabric on the premise of not influencing the calendering process, the fabric is prevented from overflowing from the position outside the upper opening of the column casing, and then the negative pressure of the upper opening of the shrinkage hole is utilized to collect hot gas and toxic and harmful gas in the column casing. The emission of waste gas is effectively reduced, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of calenders, in particular to an exhaust gas collection device for calenders. Background Art

[0002] The calender is a device that uses smooth rollers to apply pressure and temperature to the surface of the fabric to increase the surface quality of the fabric. It can increase the flatness of the fabric surface and reduce burrs, thereby increasing the aesthetics of the fabric.

[0003] The waste heat circulation calender with prior art publication number CN218779178U collects the hot air generated by the ironing roller and the waste gas from the vaporization of the dye by using a baffle, and then applies negative pressure to the air duct through an exhaust fan to collect the hot air and waste gas. However, the effect of negative pressure absorption is small, which will cause the waste gas and hot air to be disturbed by the air flow and diffuse from the vicinity of the ironing roller to the surrounding area, thereby causing environmental pollution.

[0004] Therefore, an exhaust gas collection device for the calender is needed to solve the problem of exhaust gas being discharged into the external environment during the calendering process. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a waste gas collection device for a calender, which prevents the waste gas and hot air generated during the calendering process from diffusing to the surroundings through a sealing component, and then collects the waste gas and hot air through a collecting component to reduce the emission of toxic and harmful gases.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: the waste gas collection device of the calender includes a vertically placed column, in which smooth rollers and squeezing rollers distributed up and down are rotatably connected, and there is a gap between the two for the fabric to pass through, a sealing component is provided at the lower opening of the column to prevent the waste gas from diffusing outward, and a collecting component is provided at the upper opening of the column to provide negative pressure and guide the movement of hot air and waste gas.

[0007] By adopting the above technical scheme, sealing components are used to prevent toxic and harmful gases from diffusing downward, the smooth roller and the extrusion roller are wrapped by the column wall to prevent the toxic and harmful gases from diffusing around, and then the collecting components are used to guide and collect the toxic and harmful gases and hot air upward, thereby reducing exhaust gas emissions.

[0008] The utility model is further configured as follows: the sealing component includes an elastic roller of sponge material, and the lower opening of the column is rotatably connected to two support rollers respectively located on both sides of the squeezing roller, and the surface of the support roller is fixedly connected to the elastic roller, and the fabric enters the column from the gap between one of the elastic rollers and the squeezing roller, and moves out of the inner cavity of the column from the gap between the other elastic roller and the squeezing roller, and the two elastic rollers, the squeezing roller and the fabric block the lower opening of the column.

[0009] By adopting the above technical scheme, the fabric enters from the lower opening of the cylinder between the smooth roller and the squeezing roller for calendering, and then moves out from the lower opening of the cylinder to the position on the other side of the squeezing roller. At the same time, the elastic roller made of sponge material presses the fabric toward the squeezing roller and fills the space between the elastic roller and the squeezing roller, thereby preventing the gas in the cylinder from overflowing from the inlet and outlet of the fabric, increasing the airtightness of the inner cavity of the cylinder, reducing the emission of toxic and harmful gases, and protecting the environment.

[0010] The utility model is further configured as follows: the collecting component includes a collecting block fixedly mounted on the upper end of the column, and a shrinkage hole is penetrated through one end of the collecting block away from the column, the shrinkage hole is communicated with the column, and the cross-sectional area of ​​the shrinkage hole gradually decreases in the direction away from the column.

[0011] By adopting the above technical scheme, the upper opening of the shrinkage hole is connected to the external negative pressure system and negative pressure is formed at the upper opening of the shrinkage hole. The hot air formed by the heat released by the smooth roller to the surroundings and the toxic and harmful gases generated when the smooth roller calenders the fabric are moved toward the upper opening of the shrinkage hole under the action of pressure. The gas accumulates at the upper opening of the shrinkage hole and is absorbed, completing the recovery of waste gas and hot gas. The waste gas generated in the processing process can be continuously collected to increase production efficiency.

[0012] The utility model is further configured as follows: two arc-shaped pressing grooves are arranged at the lower opening of the column, the elastic roller is in close contact with the inner wall of the pressing groove, and the elastic roller is firstly pressed and then relaxed.

[0013] By adopting the above technical scheme, when the elastic roller rotates along with the extrusion roller, the arc surface structure of the pressure groove and the elastic characteristics of the elastic roller are utilized to ensure the sealing between the elastic roller and the inner wall of the column, further preventing toxic and harmful gases and hot air from overflowing from the lower opening of the column, thereby increasing the air tightness.

[0014] The utility model is further configured as follows: the squeezing roller is made of rubber material and has greater elasticity than the elastic roller; the elastic roller presses the fabric toward the squeezing roller and deforms the fabric.

[0015] By adopting the above technical scheme, when the fabric is pressed against the squeezing roller by utilizing the elastic deformation of the elastic roller, the elastic roller can still fill the space between the elastic roller and the squeezing roller. When the fabric is replaced, the elastic roller is utilized to ensure the airtightness between the elastic roller, the fabric and the squeezing roller, thereby increasing the applicability of the equipment.

[0016] The utility model is further configured as follows: the smooth roller and the squeezing roller are both driven by a motor to rotate, and the squeezing roller presses the fabric toward the smooth roller.

[0017] By adopting the above technical solution, the squeezing roller presses the fabric against the smooth roller and provides pressure to the fabric. A heating tube is arranged inside the smooth roller to provide heat to the surface of the smooth roller. Then, a motor is used to drive the smooth roller and the squeezing roller to rotate, thereby driving the fabric to move, so as to achieve continuous calendering of the fabric and increase production efficiency.

[0018] The utility model is further configured as follows: the collecting block is a heat-insulating foam material.

[0019] By adopting the above technical solution, when the hot air rises into the shrinkage hole, the heat insulation characteristics of the collection block are used to prevent the hot air from radiating heat to the external environment, which can reduce thermal pollution and is beneficial to the recovery of waste heat in subsequent processes and increase energy utilization.

[0020] In summary, the utility model has the following beneficial effects:

[0021] The smooth roller is half-wrapped with a cylinder, and the lower opening of the cylinder and the inlet and outlet of the fabric are blocked with elastic rollers and extrusion rollers without affecting the calendering process, preventing the fabric from overflowing from positions other than the upper opening of the cylinder. The negative pressure of the upper opening of the shrinkage hole is then used to collect the hot air and toxic and harmful gases in the cylinder, effectively reducing the emission of waste gas and increasing energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0024] Figure 3 It is a cross-sectional schematic diagram of the central column of the utility model.

[0025] In the figure:

[0026] 11. Column; 12. Pressing groove; 13. Collecting block; 14. Shrinkage hole; 15. Smooth roller; 16. Elastic roller; 17. Extrusion roller; 18. Support roller. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] Example:

[0029] The exhaust gas collection device of the calender, such as Figure 1 and Figure 2As shown, it includes a vertically placed column 11, in which a smooth roller 15 and a squeezing roller 17 distributed up and down are rotatably connected, and there is a gap between the two for fabrics to pass through, and a sealing component is provided at the lower opening of the column 11 to prevent the exhaust gas from diffusing outward, and a collecting component is provided at the upper opening of the column 11 to provide negative pressure and guide the movement of hot air and exhaust gas, and the sealing component includes an elastic roller 16 of sponge material, and the lower opening of the column 11 is rotatably connected to two support rollers 18 located on both sides of the squeezing roller 17, and the surface of the support roller 18 is fixedly connected to the elastic roller 16, and the fabric passes through it. The collecting component enters the column barrel 11 through the gap between one of the elastic rollers 16 and the squeezing roller 17, and moves out of the inner cavity of the column barrel 11 from the gap between the other elastic roller 16 and the squeezing roller 17. The two elastic rollers 16, the squeezing roller 17 and the fabric block the lower opening of the column barrel 11. The collecting component includes a collecting block 13 fixedly mounted on the upper end of the column barrel 11. A shrinkage hole 14 is penetrated at one end of the collecting block 13 away from the column barrel 11. The shrinkage hole 14 is connected to the column barrel 11, and the cross-sectional area of ​​the shrinkage hole 14 gradually decreases in the direction away from the column barrel 11.

[0030] like Figure 2 and Figure 3 As shown, two arc-shaped pressing grooves 12 are provided at the lower opening of the column 11, and the elastic roller 16 is in close contact with the inner wall of the pressing groove 12, and the elastic roller 16 is first compressed and then relaxed.

[0031] like Figure 2 As shown, the squeezing roller 17 is made of rubber material and has greater elasticity than the elastic roller 16. The elastic roller 16 presses the fabric toward the squeezing roller 17 and deforms. Both the smooth roller 15 and the squeezing roller 17 are driven by a motor and rotate. At the same time, the squeezing roller 17 presses the fabric toward the smooth roller 15. The collecting block 13 is a heat-insulating foam material.

[0032] The fabric enters the cylinder 11 from the gap between one of the elastic rollers 16 and the squeezing roller 17, and then passes through the gap between the light roller 15 and the squeezing roller 17 and is pressed. The heating tube in the light roller 15 is used to provide heat to the roller surface of the light roller 15 to achieve calendering of the fabric. The fabric moves out from the gap between the other elastic roller 16 and the squeezing roller 17. At the same time, the motor drives the light roller 15 and the squeezing roller 17 to rotate and drive the fabric to move, so as to complete the continuous calendering of the fabric and increase the production efficiency. Since the heat released by the light roller 15 to the surroundings will form hot air, and the light roller 15 will heat the dye on the surface of the fabric to form toxic and harmful gases, the cylinder 11 is used to half-wrap the light roller 15 and prevent the gas from diffusing to the surroundings, and then the elasticity of the elastic roller 16 itself is used to press the fabric to the squeezing roller 17, and the elastic roller 16 itself will not affect the calendering. The gap between the cylinder 11 and the squeezing roller 17 is blocked to prevent gas from overflowing from the inlet and outlet of the fabric, and the pressure groove 12 at the lower opening of the cylinder 11 can press and then release the elastic roller 16, and the elasticity and airtightness of the elastic roller 16 itself are used again to maintain the airtightness between the elastic roller 16 and the inner wall of the cylinder 11, ensuring that the gas in the cylinder 11 will not overflow from the opening position below the cylinder 11, and the upper opening of the shrinkage hole 14 is connected to the external negative pressure system, and the negative pressure is used to collect the gas in the cylinder 11, and the rising trend of hot air and toxic and harmful gases and the gradually shrinking diameter of the shrinkage hole 14 are used to ensure that the exhaust gas concentration at the upper opening position of the shrinkage hole 14 is high, thereby increasing the efficiency of gas recovery, and the collection block 13 of the foam material can prevent the exhaust gas in the shrinkage hole 14 from releasing heat to the external environment, thereby increasing energy utilization.

[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust gas collection device for a calender, comprising a vertically placed cylinder (11), characterized in that: The column (11) is rotatably connected with a smooth roller (15) and a squeezing roller (17) which are distributed up and down, and there is a gap between the two for the fabric to pass through. The lower opening of the column (11) is provided with a sealing component to prevent the exhaust gas from diffusing outwards, and the upper opening of the column (11) is provided with a collecting component to provide negative pressure and guide the movement of hot air and exhaust gas.

2. The exhaust gas collection device for a calender according to claim 1, characterized in that: The sealing component comprises an elastic roller (16) made of sponge material. Two supporting rollers (18) are rotatably connected to the lower opening of the column tube (11) and are respectively located on both sides of the squeezing roller (17). The surface of the supporting roller (18) is fixedly connected to the elastic roller (16). The fabric enters the column tube (11) from the gap between one of the elastic rollers (16) and the squeezing roller (17), and moves out of the inner cavity of the column tube (11) from the gap between the other elastic roller (16) and the squeezing roller (17). The two elastic rollers (16), the squeezing roller (17) and the fabric block the lower opening of the column tube (11).

3. The exhaust gas collection device for a calender according to claim 2, characterized in that: The collecting component comprises a collecting block (13) fixedly mounted on the upper end of the column (11); a shrinkage hole (14) is penetrated through one end of the collecting block (13) away from the column (11); the shrinkage hole (14) is connected to the column (11), and the cross-sectional area of ​​the shrinkage hole (14) gradually decreases in the direction away from the column (11).

4. The exhaust gas collection device for a calender according to claim 2, characterized in that: Two arc-shaped pressing grooves (12) are provided at the lower opening of the column (11), and the elastic roller (16) is in close contact with the inner wall of the pressing groove (12), and the elastic roller (16) is first compressed and then released.

5. The exhaust gas collection device for a calender according to claim 2, characterized in that: The squeezing roller (17) is made of rubber material and has a greater elasticity than the elastic roller (16); the elastic roller (16) presses the fabric toward the squeezing roller (17) and deforms.

6. The exhaust gas collection device for a calender according to claim 1, characterized in that: The smooth roller (15) and the squeezing roller (17) are both driven by a motor to rotate, and the squeezing roller (17) presses the fabric against the smooth roller (15).

7. The exhaust gas collection device for a calender according to claim 3, characterized in that: The collecting block (13) is made of heat-insulating foam material.

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