A waste gas treatment device generated in a plastic bottle preform mold preforming process

Abstract

The utility model discloses a kind of plastic bottle embryo mould embryo process generation waste gas treatment devices, belong to waste gas treatment technical field;Including purification tank, the purification tank is provided with inlet pipe and outlet pipe, it further includes first activated carbon layer and second activated carbon layer, the first activated carbon layer and second activated carbon layer respectively include multiple activated carbon purification cylinder, the activated carbon purification cylinder is rotatably connected with purification tank, and the activated carbon purification cylinder of first activated carbon layer and second activated carbon layer is staggered arrangement;The utility model is set using cylindrical adsorption structure, and is set multiple, increase the contact area and path of waste gas and activated carbon, make adsorption more fully, effectively promote waste gas purification effect, motor drives activated carbon cylinder rotation, so that activated carbon all-round contact waste gas, fully exert adsorption capacity, avoid resource waste.

Description

Technical Field

[0001] This utility model relates to a waste gas treatment device, and more particularly to a waste gas treatment device generated during the plastic bottle preform mold making process, belonging to the field of waste gas treatment technology. Background Technology

[0002] Molds refer to various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Among them, PET preform molds are specialized industrial molds used to produce PET (polyethylene terephthalate) plastic preforms, and belong to the category of injection molds. Their core function is to melt PET material at high temperatures and inject it into the mold cavity, where it cools to form a preform (i.e., an uninflated bottle-shaped semi-finished product), which is then further processed through blow molding to create the final container.

[0003] The use of PET preform molds generates waste gas that needs purification, mainly from the following stages: (1) Raw material melting and decomposition: PET plastic undergoes thermal decomposition during high-temperature melting, releasing volatile organic compounds (such as benzene, toluene, etc.), which may be discharged with the gas when the mold is heated. (2) Mold venting and equipment leakage: Unreacted organic matter may be carried during mold venting, and poor equipment sealing or aging can lead to waste gas leakage. One current treatment method involves setting up a gas collection system to collect waste gas from production through pipelines, and then feeding it into purification equipment for centralized treatment. For example, an activated carbon tower can be used to adsorb low-concentration organic waste gas, a separator can remove particulate matter, followed by cooling and dehumidification. High-concentration waste gas can be converted into carbon dioxide and water through catalytic combustion. Existing purification equipment primarily treats waste gas by using activated carbon granules. While this achieves good waste gas treatment results, only the side of the activated carbon granules facing the waste gas is effectively filtered during the filtration process; the other side remains unused. If not addressed promptly, saturated activated carbon not only fails to effectively adsorb pollutants from the waste gas but may also cause the adsorbed pollutants to be released again, resulting in secondary pollution. Frequent replacement of activated carbon granules increases treatment costs and labor workload, affecting production continuity. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a waste gas treatment device generated during the plastic bottle preform mold making process.

[0005] The technical solution adopted in this utility model is as follows: A waste gas treatment device is designed for the plastic preform mold making process, including a purification box. The purification box is equipped with an inlet pipe and an outlet pipe. It also includes a first activated carbon layer and a second activated carbon layer. Each of the first and second activated carbon layers includes multiple activated carbon purification cylinders, which are rotatably connected to the purification box. The activated carbon purification cylinders of the first and second activated carbon layers are staggered. In use, the waste gas generated during the plastic preform mold making process is collected through a gas collection system and then introduced into the purification box for purification. The gas is thoroughly purified by the rolling multi-layer activated carbon purification cylinders, resulting in a wide purification contact area and a long purification path, leading to more thorough purification.

[0006] Furthermore, this design also includes drive gears, drive racks, connecting rods, drive discs, and drive motors. Drive gears are positioned on the rear side of the purification chamber, corresponding one-to-one with the activated carbon purification cylinders of the first and second activated carbon layers. The activated carbon purification cylinders extend out of the purification chamber and connect to the drive gears. The drive racks are positioned on the rear side wall of the purification chamber between the first and second activated carbon layers and mesh with all the drive gears. A support plate is positioned on the right side of the purification chamber. The drive motor and drive disc are respectively positioned on the front and rear sides of the support plate, with the output end of the drive motor connected to the drive disc. One end of the connecting rod is hinged to the edge of the drive disc, and the other end is hinged to the drive rack. With this structure, during use, the drive motor drives the drive rack to move back and forth, thereby continuously rotating the activated carbon purification cylinders in both directions, fully utilizing the effect of the activated carbon within, improving the purification effect and activated carbon utilization rate.

[0007] Furthermore, this design also includes a diversion pipe, which is disposed in the purification chamber below the first and second activated carbon layers and connected to the air inlet pipe. Multiple diversion holes are provided along the pipe body. The diversion pipe diverts the exhaust gas entering the purification chamber, ensuring it is thoroughly purified. Furthermore, a steam delivery pipe is also installed inside the purification chamber below the diversion pipe, and a steam inlet pipe connected to the steam delivery pipe is installed on the purification chamber. Steam is introduced to purify particulate matter carried in the exhaust gas.

[0008] Furthermore, the steam delivery pipe is provided with densely packed air outlets along its body, and these outlets are spirally distributed along the axial direction of the steam delivery pipe. This structure ensures that the steam is evenly distributed to every corner of the purification chamber.

[0009] Furthermore, multiple diversion pipes and steam delivery pipes are laid in an array along their width within the purification chamber to evenly disperse the waste gas and steam.

[0010] Furthermore, this design also includes a condenser, which is disposed within the purification chamber between the first activated carbon layer and the diversion pipe. This structure allows for the condensation and reflux collection of vapors containing particulate waste.

[0011] Furthermore, the condensing component includes a condensing plate, a heat-conducting plate, and a cooling semiconductor. Multiple condensing plates are arranged in an array along the length of the purification chamber, and the condensing plates are connected to each other through the heat-conducting plate. The cooling semiconductor is disposed outside the purification chamber, and the cooling end of the cooling semiconductor is connected to the adjacent condensing plate. The condensing plate is a C-shaped structure plate, which increases the contact area and facilitates reflux.

[0012] Furthermore, this design also includes a heating grid installed at the top of the purification chamber. The heating grid is made of heating resistance wire and is electrically connected to an external power source to dry and discharge the purified airflow.

[0013] Furthermore, a collection hopper is provided at the bottom of the purification box to collect the condensed and returned waste liquid.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the arrangement of a first activated carbon layer and a second activated carbon layer, with their activated carbon purification cylinders evenly spaced and staggered, increases the contact area and path between the waste gas and the activated carbon, resulting in more thorough adsorption and effectively improving the waste gas purification effect. The motor drives the drive disc, which in turn drives the drive gear via the connecting rod and drive rack, causing the activated carbon purification cylinder to rotate. This ensures that the activated carbon comes into full contact with the waste gas, fully utilizing its adsorption capacity and avoiding resource waste.

[0015] This invention can thoroughly purify the waste gas generated during the plastic preform mold making process. It is understood that it can also be used for the purification of other waste gases. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The isometric view of the concealed front sidewall panel of this utility model Figure 1 Schematic diagram.

[0018] Figure 2 for Figure 1 Enlarged view of part A.

[0019] Figure 3The isometric view of the front sidewall panel of this utility model Figure 2 Schematic diagram.

[0020] Figure 4 This is a schematic diagram of the rear-view axonometric view of the present invention.

[0021] In the diagram: 1. Purification chamber; 2. Inlet pipe; 3. Outlet pipe; 4. First activated carbon layer; 5. Second activated carbon layer; 6. Activated carbon purification cylinder; 7. Drive gear; 8. Drive rack; 9. Connecting rod; 10. Drive disc; 11. Drive motor; 12. Support plate; 13. Diverter pipe; 14. Steam delivery pipe; 15. Condenser; 16. Condenser plate; 17. Heat-conducting plate; 18. Refrigeration semiconductor; 19. Heating grid; 20. Collection hopper. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1 like Figure 1-4 As shown, a waste gas treatment device generated during the plastic bottle preform mold making process includes a purification box 1, on which an air inlet pipe 2 and an air outlet pipe 3 (for discharging the purified airflow) are provided. It also includes a first activated carbon layer 4 and a second activated carbon layer 5. The first activated carbon layer 4 and the second activated carbon layer 5 each include a plurality of activated carbon purification cylinders 6. The activated carbon purification cylinders 6 are rotatably connected to the purification box 1, and the activated carbon purification cylinders 6 of the first activated carbon layer 4 and the second activated carbon layer 5 are staggered.

[0025] The waste gas treatment device described in this embodiment further includes a drive gear 7, a drive rack 8, a connecting rod 9, a drive disc 10, and a drive motor 11. The rear side of the purification box 1 is provided with drive gears 7 that correspond one-to-one with the activated carbon purification cylinders 6 of the first activated carbon layer 4 and the second activated carbon layer 5. The activated carbon purification cylinders 6 extend out of the purification box 1 and are connected to the drive gears 7. The drive rack 8 is provided on the rear side wall of the purification box 1 between the first activated carbon layer 4 and the second activated carbon layer 5 and meshes with all the drive gears 7. A support plate 12 is provided on the right side of the purification box 1. The drive motor 11 and the drive disc 10 are respectively provided on the front and rear sides of the support plate 12, and the output end of the drive motor 11 is connected to the drive disc 10. One end of the connecting rod 9 is hinged to the edge of the drive disc 10, and the other end is hinged to the drive rack 8.

[0026] As the exhaust gas passes through the purification chamber 1, the rotation of the activated carbon purification cylinder 6 ensures that the activated carbon inside the cylinder comes into contact with the exhaust gas from all sides. Unlike traditional methods where only one side contacts the exhaust gas, this device can fully utilize the adsorption capacity of the activated carbon and avoid resource waste. Furthermore, dense through-holes can be created on the activated carbon purification cylinder 6, allowing the exhaust gas to pass through along these through-holes, thereby improving the utilization rate of the activated carbon and effectively dispersing and purifying the exhaust gas.

[0027] Example 2 This embodiment is a further optimization of the waste gas treatment device based on Embodiment 1. The waste gas treatment device in this embodiment further includes a diversion pipe 13, which is disposed within a purification chamber 1 below the first activated carbon layer 4 and the second activated carbon layer 5, and connected to an inlet pipe 2. Multiple diversion holes are provided along the pipe body of the diversion pipe 13. A steam conveying pipe 14 is also disposed within the purification chamber 1 below the diversion pipe 13, and a steam inlet pipe communicating with the steam conveying pipe 14 is provided on the purification chamber 1. Densely arranged air outlet holes are provided along the pipe body of the steam conveying pipe 14, and the air outlet holes are spirally distributed along the axial direction of the steam conveying pipe 14. Multiple diversion pipes 13 and steam conveying pipes 14 are respectively arranged in an array along their width direction within the purification chamber 1.

[0028] Steam is introduced into the steam delivery pipe 14, and the steam is dispersed into the purification box 1 through the steam delivery pipe 14. Taking advantage of the characteristic of hot air rising, the water contained in the steam comes into contact with the dust and impurities contained in the exhaust gas, thereby facilitating the pretreatment of the exhaust gas.

[0029] Example 3 This embodiment is a further optimization of the waste gas treatment device based on Embodiment 2. The waste gas treatment device in this embodiment further includes a condenser 15, which is disposed within the purification chamber 1 between the first activated carbon layer 4 and the diversion pipe 13. The condenser 15 includes a condenser plate 16, a heat-conducting plate 17, and a cooling semiconductor 18. Multiple condenser plates 16 are arranged in an array along the length of the purification chamber 1, and each pair of condenser plates 16 is connected by a heat-conducting plate 17. The cooling semiconductor 18 is disposed outside the purification chamber 1, and the cooling end of the cooling semiconductor 18 is connected to an adjacent condenser plate 16. The condenser plate 16 is a C-shaped structure plate.

[0030] In practical implementation, when steam comes into contact with dust and other particles in the exhaust gas, it carries the dust to the condenser 15, causing the steam to turn into wastewater that drips down, thus facilitating the treatment of dust in the exhaust gas. The cross-sectional design of the condenser plate 16 has excellent flow guiding properties. When steam encounters cooling and forms liquid water in the condensation area, the inclined edge guides the water flow to slide down quickly, preventing condensate from accumulating on the plate and increasing the contact time between the steam and the plate. The provided cooling semiconductor 18 further reduces the temperature of the condenser 15, allowing the wastewater to drip down quickly, while the heat-conducting plate 17 facilitates temperature transfer.

[0031] The waste gas treatment device described in this embodiment further includes a heating grid 19 disposed at the upper end of the purification chamber 1. The heating grid 19 is made of heating resistance wire and is electrically connected to an external power source. A collection hopper 20 is disposed at the bottom of the purification chamber 1.

[0032] Working principle: When in use, exhaust gas is introduced into the purification chamber 1 through the air inlet pipe 2, and steam is introduced through the steam delivery pipe 14. The steam pre-treats the exhaust gas first, and then the exhaust gas rises. At the condenser 15, part of the steam carries the particulate matter and condenses back to the collection hopper 20 for collection. The exhaust gas continues to rise to the first activated carbon layer 4 and the second activated carbon layer 5 for full purification. Then the purified airflow rises to the heating grid 19, is dried, and is discharged from the purification chamber 1 through the air outlet pipe 3.

[0033] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple," "multiple roots," and "multiple groups" mean two or more, and "several," "several roots," and "several groups" mean one or more. It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0034] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A waste gas treatment device for the plastic bottle preform mold making process, comprising a purification chamber (1), wherein the purification chamber (1) is provided with an air inlet pipe (2) and an air outlet pipe (3), characterized in that: It also includes a first activated carbon layer (4) and a second activated carbon layer (5). The first activated carbon layer (4) and the second activated carbon layer (5) each include a plurality of activated carbon purification cylinders (6). The activated carbon purification cylinders (6) are rotatably connected to the purification box (1), and the activated carbon purification cylinders (6) of the first activated carbon layer (4) and the second activated carbon layer (5) are staggered.

2. The waste gas treatment device according to claim 1, characterized in that: It also includes a drive gear (7), a drive rack (8), a connecting rod (9), a drive disc (10), and a drive motor (11). The rear side of the purification box (1) is provided with drive gears (7) that correspond one-to-one with the activated carbon purification cylinders (6) of the first activated carbon layer (4) and the second activated carbon layer (5). The activated carbon purification cylinders (6) pass through the purification box (1) and are connected to the drive gears (7). The drive rack (8) is set on the rear side wall of the purification box (1) between the first activated carbon layer (4) and the second activated carbon layer (5) and meshes with all the drive gears (7). The right side of the purification box (1) is provided with a support plate (12). The front and rear sides of the support plate (12) are respectively provided with the drive motor (11) and the drive disc (10). The output end of the drive motor (11) is connected to the drive disc (10). One end of the connecting rod (9) is hinged to the edge of the drive disc (10), and the other end is hinged to the drive rack (8).

3. The waste gas treatment device according to claim 2, characterized in that: It also includes a diversion pipe (13), which is located in the purification box (1) below the first activated carbon layer (4) and the second activated carbon layer (5) and is connected to the air inlet pipe (2). Multiple diversion holes are provided along the pipe body of the diversion pipe (13).

4. The waste gas treatment device according to claim 3, characterized in that: A steam delivery pipe (14) is also provided in the purification box (1) below the diversion pipe (13), and a steam inlet pipe connected to the steam delivery pipe (14) is provided on the purification box (1).

5. The waste gas treatment device according to claim 4, characterized in that: The steam conveying pipe (14) is provided with dense air outlets along its body, and the air outlets are spirally distributed along the axial direction of the steam conveying pipe (14).

6. The waste gas treatment device according to claim 5, characterized in that: The diversion pipe (13) and the steam conveying pipe (14) are laid in an array along their width direction in the purification box (1).

7. The waste gas treatment device according to claim 6, characterized in that: It also includes a condenser (15), which is disposed in the purification box (1) between the first activated carbon layer (4) and the diversion pipe (13).

8. The waste gas treatment device according to claim 7, characterized in that: The condenser (15) includes a condenser plate (16), a heat-conducting plate (17), and a cooling semiconductor (18). Multiple condenser plates (16) are arranged in an array along the length of the purification box (1). The condenser plates (16) are connected to each other through the heat-conducting plate (17). The cooling semiconductor (18) is arranged outside the purification box (1). The cooling end of the cooling semiconductor (18) is connected to the adjacent condenser plate (16). The condenser plate (16) is a C-shaped structure plate.

9. The waste gas treatment device according to claim 8, characterized in that: It also includes a heating mesh (19) set at the top of the purification box (1), the heating mesh (19) is made of heating resistance wire, and the heating mesh (19) is electrically connected to an external power source.

10. The waste gas treatment device according to claim 9, characterized in that: The bottom of the purification box (1) is provided with a collection hopper (20).

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