A collection device and collection method for vulcanization waste gas of rubber conveyor belt products

Abstract

The present application relates to the technical field of waste gas treatment, and specifically discloses a collection device and a collection method for vulcanization waste gas of a rubber conveyor belt product, comprising: an air collecting hood mechanism, which is a fully enclosed air collecting hood structure with a movable hood edge, including a top air collecting hood, which is located above a vulcanizing main machine, and the lower end of the top air collecting hood is connected with a movable hood edge. When the movable hood edge is unfolded and lowered to the same height as a mold under the conveyor belt, the top air collecting hood, the movable hood edge and the vulcanizing main machine together constitute a closed structure to achieve fully enclosed waste gas collection; a waste gas collection duct mechanism, which includes a main waste gas collection pipe, which is connected with a vulcanization waste gas collection pipe, a first trimming waste gas collection pipe and a second trimming waste gas collection pipe, which can increase the collection speed of unorganized waste gas, ensure effective collection of waste gas, and ensure that each waste gas generation point is reasonably and accurately utilized under the premise of effectively collecting air volume.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment, and in particular to a device and method for collecting vulcanization waste gas of rubber conveyor belt products. Background Art

[0002] The vulcanization of rubber conveyor belt products is mainly achieved through large-scale flat vulcanizing machines. The conventional vulcanization time of the vulcanizing machine is generally 15-45 minutes. After the product vulcanization is completed, the upper and lower molds of the vulcanizing machine are opened, and then the rubber conveyor belt moves to the trimming and cooling point.

[0003] Vulcanization waste gas is mainly generated during the mold opening, trimming and cooling processes of the vulcanizing main machine. The unorganized smoke generated during the vulcanization mold opening is mainly around the vulcanizing main machine, and is intermittent and fluid. The process generates high temperature, large amount of smoke and fast speed. The unorganized smoke in the cooling and trimming process of the product takes a long time to generate, but the amount and temperature of the unorganized smoke are not as high as when the mold is opened.

[0004] Conventional waste gas collection methods are mainly achieved through top-suction air hoods with soft curtains. However, the waste gas generated during the vulcanization mold opening of conveyor belt products is mainly concentrated around the vulcanization host. Therefore, this type of top-suction air hood has a low waste gas collection rate due to its excessively high installation height, and the vulcanization waste gas is not in place. At the same time, the waste gas collection duct adopts a one-stage pipeline structure, and the waste gas collection air volume in different process sections is the same. However, in the actual production process, the smoke volume in different process sections is different. Therefore, the waste gas collection air volume in different process sections cannot be accurately matched, resulting in a low effective utilization rate of the waste gas collection air volume. Summary of the invention

[0005] The present application provides a collection device and a collection method for vulcanization waste gas of rubber conveyor belt products, thereby solving the technical problems in the prior art that the top suction air collection hood used for vulcanization unorganized waste gas is far away from the hot flue gas generation point, the soft curtain has a high air leakage rate, the collected air volume is unevenly matched when the waste gas is intermittently generated, resulting in low effective utilization rate of the collected air volume and inadequate collection of vulcanization waste gas. The application realizes the effective utilization of the collected air volume, improves the gas collection speed of unorganized waste gas, ensures the effective collection of waste gas, and can ensure that each waste gas generation point is reasonably and accurately utilized under the premise of effectively collecting the air volume.

[0006] The present application provides a device for collecting vulcanization waste gas of rubber conveyor belt products, which has: An air collecting hood mechanism, which is a fully enclosed air collecting hood structure with a movable hood edge, including a top air collecting hood, the top air collecting hood is located above the vulcanizing main machine, and the lower end of the top air collecting hood is connected to the movable hood edge. When the movable hood edge is unfolded and lowered to the same height as the mold under the conveyor belt, the top air collecting hood, the movable hood edge and the vulcanizing main machine together constitute a closed structure, thereby realizing fully enclosed exhaust gas collection; The waste gas collection duct mechanism comprises a main waste gas collection pipe, wherein the main waste gas collection pipe is connected with a sulfidation waste gas collection pipe, a first trimming waste gas collection pipe and a second trimming waste gas collection pipe.

[0007] Further, the vulcanization waste gas collection pipe is used to absorb the waste gas collected by the gas collecting hood mechanism, the vulcanization waste gas collection pipe is provided with a first waste gas valve, the first trimming waste gas collection pipe is used to collect the waste gas generated in the first stage of the cooling and trimming process, the first trimming waste gas collection pipe is provided with a second waste gas valve, the second trimming waste gas collection pipe is used to collect the waste gas generated in the second stage of the cooling and trimming process, and the second trimming waste gas collection pipe is provided with a third waste gas valve; The collection area of ​​the first trimming waste gas collection pipe is the first area that the conveyor belt passes through after mold opening, the wind speed of the first trimming waste gas collection pipe and the second trimming waste gas collection pipe is the same, and the diameter of the first trimming waste gas collection pipe is larger than the diameter of the second trimming waste gas collection pipe.

[0008] Further, the sulfide waste gas collection pipeline is connected to the top gas collection hood; The first trimming waste gas collection pipe is connected to a first waste gas collection cover, the first waste gas collection cover is located above the conveyor belt, and the first waste gas collection cover is located behind the vulcanizing main machine, and the first waste gas collection cover is used to collect waste gas generated in the first stage of the cooling and trimming process; The second trimming waste gas collection pipe is connected to a second waste gas collection hood, the second waste gas collection hood is located above the conveyor belt, and the second waste gas collection hood is located behind the first waste gas collection hood, and the second waste gas collection hood is used to collect waste gas generated in the second stage of the cooling and trimming process.

[0009] Furthermore, the air collecting hood mechanism includes a mounting frame arranged on one side of the vulcanizing main machine, a mounting plate is arranged on the top of the mounting frame, the top air collecting hood is connected to the mounting plate, a movable cylinder is arranged on the mounting plate, the output end of the movable cylinder is vertically downward and passes through the mounting plate, the output end of the movable cylinder is connected to the edge of the movable hood, and a first folded ventilation pipe is connected between the edge of the movable hood and the top air collecting hood.

[0010] Furthermore, a guide assembly is provided between the mounting plate and the movable cover edge, and the guide assembly is used to provide guidance for the folding and contraction of the first foldable ventilation tube, so that the first foldable ventilation tube can be folded together; The guide assembly includes a guide rod connected to the edge of the movable cover, the guide rod is arranged vertically upward, each fold protrusion on the outer surface of the first folded ventilation pipe is provided with a guide plate, the guide plate is provided with a guide through hole, the guide rod passes through the guide plate through the guide through hole, and the mounting plate is provided with a guide through hole, and the upper end of the guide rod passes through the guide through hole.

[0011] Further, a second folding ventilation pipe is connected between the first exhaust gas collection hood and the first trimming exhaust gas collection pipe; A support frame is installed on the ground on one side of the first exhaust gas collecting hood, and a telescopic cylinder is installed on the support frame. The output end of the telescopic cylinder is vertically upward and connected to the first exhaust gas collecting hood through a connecting rod. The bottom hood edge size of the first exhaust gas collecting hood is larger than the bottom hood edge size of the second exhaust gas collecting hood, and the bottom hood edge size of the second exhaust gas collecting hood is larger than the size of the rubber trimming area.

[0012] Furthermore, a double baffle assembly is provided on the inner side of the hood edge of the first exhaust gas collecting hood, and the double baffle assembly includes a rotating shaft, and both ends of the rotating shaft are connected to the inner wall of the hood edge of the first exhaust gas collecting hood through baffle brackets. A rotating sleeve is sleeved on the rotating shaft, and a first baffle and a second baffle are respectively provided on both sides of the rotating sleeve, and the first baffle and the second baffle are both connected to the rotating sleeve through a bracket.

[0013] Furthermore, a driving gear is provided on the body of the rotating sleeve, a conversion motor is provided on one of the baffle brackets, a motor gear is installed on the output shaft of the conversion motor, and the driving gear and the motor gear are connected by a synchronous belt; During the falling process of the first exhaust gas collecting cover, the conversion motor drives the driving gear to rotate 180 degrees, so that the positions of the first baffle plate and the second baffle plate are interchanged.

[0014] Another aspect of the present application further provides a method for collecting vulcanization waste gas of a rubber conveyor belt product, comprising the following steps: S1. Mold opening waste gas collection. When the upper and lower molds of the vulcanizing main machine are opened, the main machine mold opening signal is interlocked with the fully enclosed top suction gas collection hood with movable cover edge 5-10s in advance. The cover edge of the gas collection hood is unfolded and lowered to the same height as the mold under the conveyor belt. When the product moves to the trimming point, the cover edge of the gas collection hood is retracted, waiting for the next batch of conveyor belts to enter the mold; S2. Waste gas collection during the trimming and cooling stage. When the product enters the trimming and cooling stage, the flue gas is collected through the waste gas collection duct mechanism. For some of the escaping waste gas that escapes outside the compartment, secondary flue gas collection is carried out through unorganized air exchange in the space. The frequency of secondary flue gas collection is 20 times / h.

[0015] The technical solution provided by this application has at least the following technical effects or advantages: 1. The use of a gas collecting hood mechanism can realize closed exhaust gas collection, which not only has no impact on workshop operations, but also can greatly improve the exhaust gas collection efficiency. At the same time, the expansion and contraction of the gas collecting hood mechanism is interlocked with the mold release signal of the vulcanizing host, without manual operation, realizing intelligent exhaust gas collection, and can also be combined with the actual time of exhaust gas occurrence, so as to achieve accurate matching of air volume collection; 2. Due to the use of the exhaust gas collection duct mechanism, the exhaust gas in the trimming process can be collected and processed. For some of the exhaust gas that escapes outside the compartment, it can be collected for a second time through the space unorganized ventilation method. At the same time, the diameter of the first trimming exhaust gas collection pipe is larger than the diameter of the second trimming exhaust gas collection pipe, so that the exhaust gas can be stably absorbed while the air velocity in the first trimming exhaust gas collection pipe is consistent with the air velocity in the second trimming exhaust gas collection pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an efficient collection device for unorganized waste gas in an embodiment of the present application; Figure 2 It is a schematic diagram of another viewing angle of the device in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the gas collecting hood mechanism in the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the guide assembly in the implementation manner of the present application; Figure 5 This is a schematic diagram of the structure of the first exhaust gas collection cover in the implementation manner of the present application; Figure 6 This is a schematic diagram of another viewing angle of the first exhaust gas collection cover in the embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the double baffle assembly in the implementation manner of the present application; Figure 8 Implementation Method of this Application Figure 7 A magnified schematic diagram of the structure in the middle.

[0017] In the figure: 1. Gas collecting hood mechanism; 2. Exhaust gas collecting duct mechanism; 101, top air collecting hood; 102, movable hood edge; 103, mounting frame; 104, mounting plate; 105, movable cylinder; 106, first folding ventilation pipe; 11. guide assembly; 111. guide rod; 112. guide sheet; 113. guide through hole; 114. guide through hole; 201, main exhaust gas collection pipeline; 202, sulfide exhaust gas collection pipeline; 203, first trimming exhaust gas collection pipeline; 204, second trimming exhaust gas collection pipeline; 205, first exhaust gas valve; 206, second exhaust gas valve; 207, third exhaust gas valve; 208, first exhaust gas collection cover; 209, second exhaust gas collection cover; 210, second folding ventilation pipe; 211, support frame; 212, telescopic cylinder; 22. Double baffle assembly; 221. Rotating shaft; 222. Baffle bracket; 223. Rotating sleeve; 224. First baffle; 225. Second baffle; 226. Driving gear; 227. Conversion motor; 228. Motor gear; 229. Synchronous belt. DETAILED DESCRIPTION

[0018] The embodiment of the present application discloses a device and method for collecting vulcanization waste gas from rubber conveyor belt products. By combining the front-end collection of organized waste gas with the distributed collection of waste gas collection ducts, the control of the waste gas collection system is linked with the mold opening of the vulcanization main machine to achieve effective utilization of the collected air volume, increase the collection speed of unorganized waste gas, ensure effective collection of waste gas, and ensure that each waste gas generating point is reasonably and accurately utilized under the premise of effectively collecting the air volume.

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Embodiment 1, refer to Figures 1 to 8 The present application relates to an efficient collection device for unorganized waste gas, which is used for collecting unorganized waste gas from rubber conveyor belt product flat vulcanization. For the collection of unorganized waste gas from rubber conveyor belt product enterprises, the waste gas collection efficiency is often low due to inappropriate waste gas collection measures, and most of the air volume is wasted, causing the environmental benefits of such enterprises to be greatly damaged. The waste gas collection device provided by the present invention can not only effectively collect waste gas, but also ensure that each waste gas generation point is reasonably and accurately utilized under the premise of effectively collecting air volume.

[0021] In the prior art, the flat vulcanizing machine used for vulcanization of rubber conveyor belt products has a length of 10-25m and a width of 1.2-2.5m. Before the vulcanization of the conveyor belt products, the operator observes around the main machine to confirm that the product is placed correctly, and then closes the upper and lower molds of the vulcanization main machine, and the conveyor belt enters formal vulcanization. The vulcanization process generally lasts 15-30 minutes. The upper and lower molds are sealed throughout the vulcanization process, and no waste gas is generated in this process. After the vulcanized product is completed, the upper and lower molds are opened, and hot flue gas is generated around the vulcanization main machine. The waste gas generated in this process has a high temperature, a large amount of flue gas, and a fast speed. However, before the product is vulcanized, the operator must adjust the product or perform some maintenance activities around the main machine, so it is impossible to set any fixed waste gas collection measures around the main machine.

[0022] After the product is vulcanized, it needs to enter the next step of trimming and cooling. The conventional waste gas collection method for the unorganized waste gas generated in this process and the unorganized waste gas in the vulcanization mold opening process is mainly achieved through a top-suction gas collection hood with a soft curtain. However, since this type of top-suction gas collection hood is far away from the hot flue gas generation point, the soft curtain has a high air leakage rate, and the collected air volume is unevenly matched when the waste gas is intermittently generated, resulting in a low effective utilization rate of the collected air volume and inadequate collection of the vulcanization waste gas.

[0023] The present invention combines a new type of front-end collection measure for the vulcanization unorganized waste gas of a rubber conveyor belt product with a waste gas collection duct distribution method, and interlocks the control of the waste gas collection system with the mold opening of the vulcanization main machine to achieve effective utilization of the collected air volume, increase the collection speed of the unorganized waste gas, and ensure effective collection of the waste gas.

[0024] Specifically, the present invention provides a device for collecting vulcanization waste gas of a rubber conveyor belt product, comprising a gas collecting hood mechanism 1 and a waste gas collecting duct mechanism 2.

[0025] Among them, refer to Figures 1 to 4 The air collecting hood mechanism 1 is a fully enclosed air collecting hood structure with a movable hood edge, including a top air collecting hood 101. The top air collecting hood 101 is located above the vulcanizing main machine. The lower end of the top air collecting hood 101 is connected with a movable hood edge 102. When the movable hood edge 102 is unfolded and lowered to the same height as the mold under the conveyor belt, the top air collecting hood 101, the movable hood edge 102 and the vulcanizing main machine together constitute a closed structure, thereby realizing fully enclosed exhaust gas collection.

[0026] Further, refer to Figure 3The air collecting hood mechanism 1 includes a mounting frame 103 arranged on one side of the vulcanizing main machine, a mounting plate 104 is arranged on the top of the mounting frame 103, the top air collecting hood 101 is connected to the mounting plate 104, a movable cylinder 105 is arranged on the mounting plate 104, the output end of the movable cylinder 105 is vertically downward and passes through the mounting plate 104, the output end of the movable cylinder 105 is connected to the movable hood edge 102, and a first folded ventilation pipe 106 is connected between the movable hood edge 102 and the top air collecting hood 101.

[0027] In the gas collecting hood mechanism 1 of the present embodiment, the output end of the movable cylinder 105 extends to drive the movable hood edge 102 to move downward. When the gas collecting hood mechanism 1 collects waste gas, the output end of the movable cylinder 105 extends to expand the movable hood edge 102 and move it to the same height as the mold under the conveyor belt, so that the movable hood edge 102, the top gas collecting hood 101, the first folding ventilation pipe 106 and the vulcanizing main machine together form a closed structure, and the unorganized smoke generated when the vulcanizing main machine is opened is collected by the top gas collecting hood 101, thereby realizing the waste gas collection and treatment during the mold opening process.

[0028] It should be noted that, refer to Figure 3 and Figure 4 In this embodiment, a guide assembly 11 is provided between the mounting plate 104 and the movable cover edge 102, and the guide assembly 11 is used to provide guidance for the folding and contraction of the first folding ventilation tube 106 so that the first folding ventilation tube 106 can be folded together.

[0029] Specifically, refer to Figure 4 The guide assembly 11 includes a guide rod 111 connected to the movable cover edge 102, the guide rod 111 is arranged vertically upward, each fold protrusion on the outer surface of the first folded ventilation pipe 106 is provided with a guide piece 112, the guide piece 112 is provided with a guide through hole 113, the guide rod 111 passes through the guide piece 112 through the guide through hole 113, and the mounting plate 104 is provided with a guide through hole 114, and the upper end of the guide rod 111 passes through the guide through hole 114.

[0030] During the operation of the air collecting hood mechanism 1, the movable hood edge 102 needs to be separated from the top air collecting hood 101 to stretch the first folded ventilation tube 106. At the same time, during the mold opening process, the unorganized smoke is mainly around the vulcanizing main machine, and is intermittent and fluid. The process generates high temperature, large amount of smoke and fast speed, which has a certain impact on the first folded ventilation tube 106, causing the first folded ventilation tube 106 to be deformed. During the contraction of the first folded ventilation tube 106, it may not be able to be stacked neatly.

[0031] In this embodiment, the guide assembly 11 is provided. When the first foldable ventilation duct 106 is unfolded, the first foldable ventilation duct 106 is in a vertical state due to the limiting effect of the guide rod 111. Facing the impact of smoke, the existence of the guide rod 111 ensures that the first foldable ventilation duct 106 is always in a vertical state. Therefore, when the first foldable ventilation duct 106 is folded, the first foldable ventilation duct 106 can be neatly stacked.

[0032] The specific working principle of the gas collecting hood mechanism 1 in this embodiment is: The smoke generated around the vulcanizing machine is intermittent. When the upper and lower molds of the vulcanizing machine are opened, the machine mold opening signal is advanced by 5-10s (depending on the hood edge length of the hood and the reaction time of the actuator) and is interlocked with the fully enclosed top suction hood with a movable hood edge, that is, the hood mechanism 1. The movable hood edge 102 is unfolded and lowered to the same height as the mold under the conveyor belt (the height of the movable hood edge 102 must be lower than the conveyor belt product to ensure that the hot smoke generated is completely covered). The movable hood edge 102 is generally a soft fireproof coil, or a roll-up fireproof transparent flame-retardant material. When the product moves to the trimming point, the movable hood edge 102 is retracted, waiting for the next batch of conveyor belts to enter the mold.

[0033] Further, refer to Figure 2 In this embodiment, the exhaust gas collecting duct mechanism 2 includes a main exhaust gas collecting pipe 201, and the main exhaust gas collecting pipe 201 is connected to a sulfidation exhaust gas collecting pipe 202, a first trimming exhaust gas collecting pipe 203 and a second trimming exhaust gas collecting pipe 204.

[0034] Among them, the sulfiding waste gas collecting pipe 202 is used to absorb the waste gas collected by the gas collecting hood mechanism 1, and a first waste gas valve 205 is arranged on the sulfiding waste gas collecting pipe 202. The first trimming waste gas collecting pipe 203 is used to collect the waste gas generated in the first stage of the cooling and trimming process, and a second waste gas valve 206 is arranged on the first trimming waste gas collecting pipe 203. The second trimming waste gas collecting pipe 204 is used to collect the waste gas generated in the second stage of the cooling and trimming process, and a third waste gas valve 207 is arranged on the second trimming waste gas collecting pipe 204.

[0035] It should be noted that the collection area of ​​the first trimming waste gas collection pipe 203 is the first area that the conveyor belt passes through after the mold is opened, the wind speed of the first trimming waste gas collection pipe 203 and the second trimming waste gas collection pipe 204 is the same, and the diameter of the first trimming waste gas collection pipe 203 is larger than the diameter of the second trimming waste gas collection pipe 204.

[0036] Wherein, the sulfide waste gas collection pipe 202 is connected to the top gas collection hood 101; The first trimming waste gas collection pipe 203 is connected to a first waste gas collection cover 208, which is located above the conveyor belt and behind the vulcanizing main machine. The first waste gas collection cover 208 is used to collect waste gas generated in the first stage of the cooling and trimming process; The second trimming waste gas collection pipe 204 is connected to the second waste gas collection hood 209, which is located above the conveyor belt and behind the first waste gas collection hood 208. The second waste gas collection hood 209 is used to collect waste gas generated in the second stage of the cooling and trimming process.

[0037] In this embodiment, the second foldable ventilation duct 210 has the same structure as the first foldable ventilation duct 106, and a guide component is also provided on the outside thereof. The guide component has the same principle as the guide component 11, and will not be described in detail here.

[0038] It is worth pointing out that the occurrence time of each process on the same production line is different, and a segmented collection method is adopted for the exhaust gas ducts at each point. The first exhaust gas valve 205, the second exhaust gas valve 206, and the third exhaust gas valve 207 correspond to the exhaust gas collection of different source strengths respectively. During the working process, it is necessary to accurately match the collected air volume according to the actual occurrence time of the exhaust gas.

[0039] When the mold opening signal of the vulcanizing main engine is interlocked to the first exhaust valve 205, the movable cover edge 102 will be unfolded; The second exhaust valve 206 and the third exhaust valve 207 are mainly used for the segmented collection of exhaust gas during the cooling and trimming process. The area where the first trimming exhaust gas collection pipe 203 is located is the first area that the conveyor belt passes through after the mold is opened. The exhaust gas temperature in this area is high, the gas volume is large, and the smoke generation speed is fast. Therefore, a large amount of collected air volume needs to be matched. According to the resistance balance calculation of the air duct, when the air speed of the first trimming exhaust gas collection pipe 203 is consistent with that of the second trimming exhaust gas collection pipe 204, the collected air volume should be at least 50% higher. Therefore, the diameter of the first trimming exhaust gas collection pipe 203 should be slightly larger to ensure that the exhaust gas is effectively collected and the maximum utilization effect is achieved.

[0040] At the same time, since the exhaust gas temperature and gas volume in the area where the first trimming exhaust gas collection pipe 203 are located are high, the smoke generation speed is fast. When the first exhaust gas collection hood 208 is suspended in the air to collect exhaust gas, the exhaust gas can easily escape from the suction range and diffuse in the production compartment.

[0041] Therefore, refer to Figure 5 and Figure 6In this embodiment, a second folding ventilation pipe 210 is further connected between the first exhaust gas collecting hood 208 and the first trimming exhaust gas collecting pipe 203, and a support frame 211 is installed on the ground on one side of the first exhaust gas collecting hood 208, and a telescopic cylinder 212 is installed on the support frame 211. The output end of the telescopic cylinder 212 is vertically upward and connected to the first exhaust gas collecting hood 208 through a connecting rod. The bottom hood edge size of the first exhaust gas collecting hood 208 is larger than the bottom hood edge size of the second exhaust gas collecting hood 209, and the bottom hood edge size of the second exhaust gas collecting hood 209 is larger than the area size of the rubber trimming.

[0042] When collecting the exhaust gas, the output end of the telescopic cylinder 212 extends out, driving the first exhaust gas collecting cover 208 to move downward to cover the trimming area to prevent the exhaust gas from escaping.

[0043] As for the second exhaust gas collection hood 209, since the exhaust gas in the area where it is located is relatively low in temperature, small in gas volume, and slow in smoke generation speed, it can also achieve a better exhaust gas collection effect by hanging it in the air to collect exhaust gas.

[0044] Similarly, since the exhaust gas temperature and gas volume in the area where the first trimmed exhaust gas collection pipe 203 are located are high, the smoke generation speed is fast, the exhaust gas has a greater impact on the inner wall of the first exhaust gas collection hood 208, and the temperature is high, which can easily cause the hood edge of the first exhaust gas collection hood 208 to age.

[0045] Based on the above problems, refer to Figures 6 to 8 In this embodiment, a double baffle assembly 22 is provided on the inner side of the cover edge of the first exhaust gas collecting cover 208, and the double baffle assembly 22 includes a rotating shaft 221. The two ends of the rotating shaft 221 are connected to the inner wall of the cover edge of the first exhaust gas collecting cover 208 through a baffle bracket 222. A rotating sleeve 223 is sleeved on the rotating shaft 221. The first baffle 224 and the second baffle 225 are respectively provided on both sides of the rotating sleeve 223. The first baffle 224 and the second baffle 225 are both connected to the rotating sleeve 223 through a bracket.

[0046] Through the above arrangement in this embodiment, the double baffle assembly 22 is located on the path of the exhaust gas, which can block the impact of the high-temperature exhaust gas flow on the first exhaust gas collecting cover 208 and effectively protect the first exhaust gas collecting cover 208.

[0047] Specifically, refer to Figure 8 A driving gear 226 is provided on the body of the rotating sleeve 223, a conversion motor 227 is provided on one of the baffle brackets 222, a motor gear 228 is installed on the output shaft of the conversion motor 227, and the driving gear 226 and the motor gear 228 are connected by a synchronous belt 229. During the falling process of the first exhaust gas collecting cover 208, the conversion motor 227 drives the driving gear 226 to rotate 180 degrees so that the positions of the first baffle 224 and the second baffle 225 are interchanged.

[0048] The above-mentioned double baffle assembly 22 has two baffle structures, both of which can withstand the impact of airflow. At the same time, during each drop of the first exhaust gas collecting hood 208, the positions of the two baffle structures are interchanged, so that the two baffle structures take turns to resist the impact of airflow, so that the first baffle 224 and the second baffle 225 can effectively dissipate heat when they are not in use, thereby extending the service life of the double baffle assembly 22.

[0049] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: The unorganized waste gas collection of rubber conveyor belt product enterprises is often inappropriate due to their waste gas collection measures, resulting in low waste gas collection efficiency and most of the air volume wasted, causing significant damage to the environmental protection benefits of such enterprises. The fully enclosed waste gas collection method that can achieve intermittent waste gas collection provided by the present invention can not only effectively collect waste gas, but also ensure that each waste gas generating point is reasonably and accurately utilized under the premise of effectively collecting air volume.

[0050] Example 2, refer to Figures 1 to 8 The present application also provides a method for collecting vulcanization waste gas of rubber conveyor belt products, which specifically comprises the following steps: S1. Mold opening waste gas collection. When the upper and lower molds of the vulcanizing main machine are opened, the main machine mold opening signal is interlocked with the fully enclosed top suction gas collection hood with movable cover edge 5-10s in advance. The cover edge of the gas collection hood is unfolded and lowered to the same height as the mold under the conveyor belt. When the product moves to the trimming point, the cover edge of the gas collection hood is retracted, waiting for the next batch of conveyor belts to enter the mold; S2. Waste gas collection during the trimming and cooling stage. When the product enters the trimming and cooling stage, the flue gas is collected through the waste gas collection duct mechanism. For some of the escaping waste gas that escapes outside the compartment, secondary flue gas collection is carried out through unorganized air exchange in the space. The frequency of secondary flue gas collection is 20 times / h.

[0051] The method for collecting vulcanization waste gas of rubber conveyor belt products involved in this application is mainly divided into two parts: 1. Use a fully enclosed gas collecting hood with a movable hood edge to collect the exhaust gas generated during the mold opening process. During this process, the smoke generated around the vulcanizing host is intermittent. When the upper and lower molds of the vulcanizing host are opened, the host mold opening signal is advanced by 5-10s (depending on the length of the hood edge and the reaction time of the actuator) and is interlocked with the fully enclosed top suction gas collecting hood with a movable hood edge, that is, the gas collecting hood mechanism 1. The movable hood edge 102 is unfolded and lowered to the same height as the mold under the conveyor belt (the height of the movable hood edge 102 must be lower than the conveyor belt product to ensure that the hot smoke generated is completely covered). The movable hood edge 102 is generally a soft fireproof coiled material, or a roll-up fireproof transparent flame-retardant material, etc. When the product moves to the trimming point, the movable hood edge 102 is retracted, waiting for the next batch of conveyor belts to enter the mold.

[0052] 2. Use the waste gas collection hood to collect the waste gas generated during the trimming process. In this process, the waste gas collection measures are "waste gas collection hood + closed compartment" to achieve the first waste gas collection. For some of the escaping waste gas outside the compartment, the secondary collection is carried out through the unorganized space ventilation method. Considering the high degree of manual participation in the compartment, emergency evacuation doors are set on the left and right sides of the compartment, and are designed according to the ventilation requirement of at least 20 times / h in the compartment.

[0053] It should be noted that, in the above-mentioned waste gas collection process, a segmented collection method is adopted for the waste gas ducts at each point, and the first waste gas valve 205, the second waste gas valve 206, and the third waste gas valve 207 correspond to the waste gas collection of different source strengths respectively. In the working process, it is necessary to accurately match the collected air volume in combination with the actual occurrence time of the waste gas; The second exhaust valve 206 and the third exhaust valve 207 are mainly used for the segmented collection of exhaust gas in the cooling and trimming process, wherein the area where the first trimming exhaust gas collection pipe 203 is located is the first area that the conveyor belt passes through after the mold is opened. The exhaust gas temperature in this area is high, the gas volume is large, and the smoke generation speed is fast. Therefore, a large amount of collected air volume needs to be matched. According to the resistance balance calculation of the air duct, when the air speed of the first trimming exhaust gas collection pipe 203 is consistent with that of the second trimming exhaust gas collection pipe 204, the collected air volume should be at least 50% higher. Therefore, the diameter of the first trimming exhaust gas collection pipe 203 should be slightly larger to ensure that the exhaust gas is effectively collected and the maximum utilization effect is achieved.

[0054] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages: 1. The hot flue gas generated around the vulcanizing machine is collected by the fully enclosed gas collecting hood with a movable hood edge, which not only has no impact on the workshop operation, but also can greatly improve the collection efficiency of the exhaust gas. The expansion and contraction of the movable hood edge 102 is interlocked with the demoulding signal of the vulcanizing machine, without manual operation, realizing intelligent exhaust gas collection; 2. During the trimming and cooling process, the first exhaust gas collection hood 208 and the second exhaust gas collection hood 209 are mainly used to collect the exhaust gas in a "combined closed compartment with hard cover edges on all sides". The exhaust gas is collected, and the exhaust gas partially escaping outside the compartment is collected again by the space unorganized ventilation method. 3. The vulcanization waste gas collection pipe 202 extends into the top gas collection hood 101. When the mold opening signal of the vulcanization host is interlocked to the first waste gas valve 205, the vulcanization waste gas collection pipe 202 is located on both sides of the vulcanization host, so that the actual generation time of the waste gas can be combined to achieve accurate matching of air volume collection; 4. The area where the first trimming exhaust gas collection pipe 203 is located is the first area that the conveyor belt passes after the mold is opened. The exhaust gas temperature in this area is high, the gas volume is large, and the smoke generation speed is fast. Therefore, a large amount of collected air volume needs to be matched. According to the resistance balance calculation of the air duct, when the air speed of the first trimming exhaust gas collection pipe 203 is consistent with the air speed of the second trimming exhaust gas collection pipe 204, the collected air volume should be at least 50% higher. Therefore, the diameter of the first trimming exhaust gas collection pipe 203 should be slightly larger to ensure that the exhaust gas is effectively collected. The air volume is effectively collected and the utilization is maximized.

[0055] To sum up, the method for collecting vulcanization waste gas from rubber conveyor belt products in this embodiment can achieve effective utilization of the collected air volume, improve the collection speed of unorganized waste gas, ensure effective collection of waste gas, and ensure that each waste gas generating point is reasonably and accurately utilized under the premise of effectively collecting the air volume.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0057] What has been described above is only a preferred specific implementation manner of the embodiments of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A device for collecting vulcanization waste gas from rubber conveyor belt products, characterized in that: have: An air collecting hood mechanism (1), the air collecting hood mechanism (1) being a fully enclosed air collecting hood structure with a movable hood edge, comprising a top air collecting hood (101), the top air collecting hood (101) being located above a vulcanizing machine, the lower end of the top air collecting hood (101) being connected to a movable hood edge (102), and when the movable hood edge (102) is unfolded and lowered to the same height as the mold under the conveyor belt, the top air collecting hood (101), the movable hood edge (102) and the vulcanizing machine together form a closed structure, thereby realizing fully enclosed exhaust gas collection; An exhaust gas collection duct mechanism (2), the exhaust gas collection duct mechanism (2) comprising a main exhaust gas collection pipe (201), the main exhaust gas collection pipe (201) being connected to a sulfidation exhaust gas collection pipe (202), a first trimming exhaust gas collection pipe (203) and a second trimming exhaust gas collection pipe (204).

2. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 1, characterized in that: The sulfiding waste gas collection pipe (202) is used to absorb the waste gas collected by the gas collecting hood mechanism (1); the sulfiding waste gas collection pipe (202) is provided with a first waste gas valve (205); the first trimming waste gas collection pipe (203) is used to collect the waste gas generated in the first stage of the cooling and trimming process; the first trimming waste gas collection pipe (203) is provided with a second waste gas valve (206); the second trimming waste gas collection pipe (204) is used to collect the waste gas generated in the second stage of the cooling and trimming process; the second trimming waste gas collection pipe (204) is provided with a third waste gas valve (207); The collection area of ​​the first trimming waste gas collection pipe (203) is the area that the conveyor belt first passes through after the mold is opened, the wind speed of the first trimming waste gas collection pipe (203) and the second trimming waste gas collection pipe (204) are the same, and the pipe diameter of the first trimming waste gas collection pipe (203) is larger than the pipe diameter of the second trimming waste gas collection pipe (204).

3. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 1, characterized in that: The sulfide waste gas collection pipe (202) is connected to the top gas collecting hood (101); The first trimming waste gas collection pipe (203) is connected to a first waste gas collection cover (208), the first waste gas collection cover (208) is located above the conveyor belt, and the first waste gas collection cover (208) is located behind the vulcanizing main machine, and the first waste gas collection cover (208) is used to collect waste gas generated in the first stage of the cooling and trimming process; The second trimming waste gas collection pipe (204) is connected to a second waste gas collection hood (209), the second waste gas collection hood (209) is located above the conveyor belt, and the second waste gas collection hood (209) is located behind the first waste gas collection hood (208), and the second waste gas collection hood (209) is used to collect waste gas generated in the second stage of the cooling and trimming process.

4. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 1, characterized in that: The air collecting hood mechanism (1) comprises a mounting frame (103) arranged on one side of the vulcanizing main machine, a mounting plate (104) is arranged on the top of the mounting frame (103), the top air collecting hood (101) is connected to the mounting plate (104), a movable cylinder (105) is arranged on the mounting plate (104), the output end of the movable cylinder (105) is vertically downward and passes through the mounting plate (104), the output end of the movable cylinder (105) is connected to the movable hood edge (102), and a first folding ventilation pipe (106) is connected between the movable hood edge (102) and the top air collecting hood (101).

5. A device for collecting vulcanization waste gas of rubber conveyor belt products as claimed in claim 4, characterized in that: A guide assembly (11) is provided between the mounting plate (104) and the movable cover edge (102), and the guide assembly (11) is used to provide guidance for the folding and contraction of the first foldable ventilation tube (106), so that the first foldable ventilation tube (106) can be folded together; The guide assembly (11) comprises a guide rod (111) connected to the movable cover edge (102), the guide rod (111) being arranged vertically upwards, each folded protrusion on the outer surface of the first folded ventilation pipe (106) being provided with a guide sheet (112), the guide sheet (112) being provided with a guide through hole (113), the guide rod (111) passing through the guide sheet (112) through the guide through hole (113), and the mounting plate (104) being provided with a guide through hole (114), the upper end of the guide rod (111) passing through the guide through hole (114).

6. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 3, characterized in that: A second folding ventilation pipe (210) is connected between the first exhaust gas collection cover (208) and the first trimming exhaust gas collection pipe (203); A support frame (211) is installed on the ground at one side of the first exhaust gas collection cover (208), and a telescopic cylinder (212) is installed on the support frame (211). The output end of the telescopic cylinder (212) is vertically upward and connected to the first exhaust gas collection cover (208) through a connecting rod. The bottom cover edge size of the first exhaust gas collection cover (208) is larger than the bottom cover edge size of the second exhaust gas collection cover (209), and the bottom cover edge size of the second exhaust gas collection cover (209) is larger than the size of the rubber trimming area.

7. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 3, characterized in that: A double baffle assembly (22) is arranged on the inner side of the cover edge of the first exhaust gas collection cover (208), and the double baffle assembly (22) comprises a rotating shaft (221), and both ends of the rotating shaft (221) are connected to the inner wall of the cover edge of the first exhaust gas collection cover (208) through baffle brackets (222), and a rotating sleeve (223) is sleeved on the rotating shaft (221), and a first baffle (224) and a second baffle (225) are respectively arranged on both sides of the rotating sleeve (223), and the first baffle (224) and the second baffle (225) are both connected to the rotating sleeve (223) through brackets.

8. A device for collecting vulcanization waste gas of a rubber conveyor belt product as claimed in claim 7, characterized in that: A driving gear (226) is provided on the body of the rotating sleeve (223); a conversion motor (227) is provided on one of the baffle brackets (222); a motor gear (228) is installed on the output shaft of the conversion motor (227); and the driving gear (226) and the motor gear (228) are connected via a synchronous belt (229); During the falling process of the first exhaust gas collecting cover (208), the conversion motor (227) drives the driving gear (226) to rotate 180 degrees, so that the positions of the first baffle (224) and the second baffle (225) are interchanged.

9. A method for collecting vulcanization waste gas from rubber conveyor belt products, characterized in that: The steps include: S1. Mold opening waste gas collection. When the upper and lower molds of the vulcanizing main machine are opened, the main machine mold opening signal is interlocked with the fully enclosed top suction gas collection hood with movable cover edge 5-10s in advance. The cover edge of the gas collection hood is unfolded and lowered to the same height as the mold under the conveyor belt. When the product moves to the trimming point, the cover edge of the gas collection hood is retracted, waiting for the next batch of conveyor belts to enter the mold; S2. Waste gas collection during the trimming and cooling stage. When the product enters the trimming and cooling stage, the flue gas is collected through the waste gas collection duct mechanism. For some of the escaping waste gas that escapes outside the compartment, secondary flue gas collection is carried out through unorganized air exchange in the space. The frequency of secondary flue gas collection is 20 times / h.

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