Waste gas purification and recovery device for production of environment-friendly PE steel wire mesh framework composite pipe
By designing a waste gas purification and recovery device that includes scrapers and phase change materials, the problems of heat loss and difficulty in cleaning solid particles in waste gas were solved, achieving heat reuse and improved purification efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN SHENGXIANG PIPE IND CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-28
AI Technical Summary
In existing waste gas purification and recovery devices used in the production of PE steel wire mesh reinforced composite pipes, there are problems with heat loss in the waste gas and difficulty in removing solid particles.
An environmentally friendly waste gas purification and recovery device was designed, which includes a waste gas pretreatment box, a purification box, an insulation box and a heat exchange mechanism. It cleans solid particles by scraping and uses phase change materials to store heat, thereby realizing heat reuse and effective removal of solid particles.
It enables the reuse of heat in waste gas, ensures heat exchange efficiency, avoids solid particulate pollution, and improves purification efficiency and environmental friendliness.
Smart Images
Figure CN224167179U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas purification technology, specifically to an environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes. Background Technology
[0002] PE steel wire mesh reinforced composite pipe is a new type of pipe material that combines the advantages of plastic and metal. It primarily uses high-density polyethylene (HDPE) as the matrix material, with one or more layers of steel wire mesh embedded inside as a reinforcing skeleton structure, thus forming a composite pipe that combines the corrosion resistance of plastic pipes with the high strength of metal pipes. In the production process, high-density polyethylene material is first extruded into a tubular shape using an extruder. Then, a pre-made steel wire mesh skeleton is added at specific locations, and the two are then tightly bonded through processes such as heating and pressurization, ultimately forming the PE steel wire mesh reinforced composite pipe. Because plastic is used, some waste gas is generated during the production process. If this waste gas is discharged directly into the atmosphere without treatment, it will pollute the environment. Therefore, waste gas purification and recovery devices are needed to purify and recover the generated waste gas.
[0003] Existing waste gas purification and recovery devices for PE steel wire mesh reinforced composite pipe production mainly consist of waste gas collection systems, pretreatment equipment, purification equipment, emission systems, and recovery systems. The waste gas generated during production is collected by a gas collection hood, and then particulate matter is removed from the waste gas to achieve purification. However, the heat in the waste gas is usually lost. If the waste gas is heat exchanged, the solid particles in the waste gas will enter the heat exchange system, which is not easy to clean. Utility Model Content
[0004] The purpose of this utility model is to provide an environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes, so as to solve the problem mentioned in the background art that the waste gas generated in the production of PE steel wire mesh reinforced composite pipes on the market contains heat, the heat in the waste gas is usually lost, and if the waste gas is heat exchanged, the solid particles in the waste gas will enter the heat exchange system and are not easy to clean.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes, comprising a waste gas purification and recovery device body and a feeding system. The waste gas purification and recovery device body is provided with a waste gas pretreatment box and a waste gas purification box, and the feeding system is located between the waste gas pretreatment box and the waste gas purification box. A waste gas collection pipe is connected to the upper side of the waste gas pretreatment box, and a spiral filter screen and a filter plate are fitted inside the waste gas pretreatment box. A blower is also installed on the waste gas purification and recovery device body, and an inlet pipe and an outlet pipe are respectively connected to the inlet and outlet ends of the blower. An insulation box is provided outside the feeding system, and a heat exchange mechanism is fitted inside the insulation box. A sealing cavity is provided on the lower outer part of the insulation box and the heat exchange mechanism. The inlet pipe and the outlet pipe are respectively connected to the lower side of the waste gas pretreatment box and the sealing cavity between the insulation box and the heat exchange mechanism. A connecting pipe is also connected between the sealing cavity between the insulation box and the heat exchange mechanism and the waste gas purification box.
[0006] Preferably, the main body of the waste gas purification and recovery device is provided with scrapers arranged in a cross shape, and the outer end of the scraper is provided with a groove that moves in conjunction with the gas outlet pipe.
[0007] Preferably, a cylinder is fixed to the outside of the scraper by welding, and the cylinder is rotated and engaged in the sealed cavity between the heat exchange mechanism and the heat preservation box.
[0008] Preferably, an external gear is also fixed to the outer side of the cylinder by welding, and the side of the external gear is provided with a meshing transmission gear.
[0009] Preferably, the bottom of the sealed cavity between the heat exchange mechanism and the insulation box is fixed with an ash discharge hopper by welding, and the upper diameter of the ash discharge hopper is equal to the bottom width of the scraper.
[0010] Preferably, the heat exchange mechanism has an interlaced connecting pipe fixed in the middle part of the feeding system, and the heat exchange mechanism is filled with phase change material.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes undergoes heat exchange with the feeding system. The feeding system is located between the waste gas pretreatment box and the waste gas purification box, allowing for the reuse of heat in the waste gas during the purification process, resulting in greater energy efficiency and environmental friendliness. This waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes uses a rotatable scraper to clean the waste gas flow area at the feeding system, effectively removing solid particles. After collection, the waste gas undergoes unified pre-filtration before heat exchange, avoiding the difficulty of cleaning solid particles while ensuring effective heat exchange. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of an environmentally friendly PE steel wire mesh reinforced composite pipe production waste gas purification and recovery device according to the present invention.
[0013] Figure 2 This is a schematic diagram of the waste gas purification box structure of an environmentally friendly PE steel wire mesh reinforced composite pipe production waste gas purification and recovery device.
[0014] Figure 3 This is a schematic diagram of the scraper structure of an environmentally friendly PE steel wire mesh reinforced composite pipe production waste gas purification and recovery device.
[0015] In the diagram: 1. Main body of the waste gas purification and recovery device; 2. Waste gas collection pipeline; 3. Waste gas pretreatment box; 301. Spiral filter screen; 302. Filter plate; 4. Blower; 401. Inlet pipe; 402. Outlet pipe; 5. Feeding system; 501. Insulation box; 6. Heat exchange mechanism; 601. Interlaced connecting pipe; 602. Phase change material; 7. Connecting pipe; 8. Scraper; 801. External gear; 802. Cylinder; 9. Waste gas purification box; 10. Transmission gear; 11. Ash discharge hopper. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: an environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes, comprising a waste gas purification and recovery device body 1 and a feeding system 5. The waste gas purification and recovery device body 1 is equipped with a waste gas pretreatment box 3 and a waste gas purification box 9. The waste gas purification box 9 is an existing purification device with a built-in spray system, which can further purify and cool the waste gas. The feeding system 5 is located between the waste gas pretreatment box 3 and the waste gas purification box 9. A waste gas collection pipe 2 is connected to the upper side of the waste gas pretreatment box 3. A spiral filter screen 301 and a filter plate 302 are fitted inside the waste gas pretreatment box 3. A blower 4 is also installed on the waste gas purification and recovery device body 1, and the inlet and outlet ends of the blower 4 are respectively connected to an air inlet pipe 401. Along with the exhaust pipe 402, the main body 1 of the waste gas purification and recovery device is equipped with scrapers 8 arranged in a cross shape, and the outer end of the scraper 8 has a groove that movably cooperates with the exhaust pipe 402. This structure allows for the collection of particles in the intermediate flow process during waste gas purification and heat recovery. The scraper 8 can rotate, ensuring that it is not affected by the exhaust pipe 402 during rotation, thus ensuring that the exhaust pipe 402 can enter the sealed cavity between the heat exchange mechanism 6 and the insulation box 501 at a certain angle. The feeding system 5 is externally equipped with an insulation box 501, and the heat exchange mechanism 6 is fitted inside the insulation box 501. A sealed cavity is provided on the lower outer part between the insulation box 501 and the heat exchange mechanism 6. The outer side of the scraper 8 is welded... A cylinder 802 is fixedly attached to the heat exchange mechanism 6 and rotates and engages within the sealed cavity between the heat exchange mechanism 6 and the insulation box 501. This structure allows the scrapers 8 to be integrally fixed via the cylinder 802, enabling them to rotate synchronously. The inlet pipe 401 and outlet pipe 402 are respectively connected to the lower side of the exhaust gas pretreatment box 3 and the sealed cavity between the insulation box 501 and the heat exchange mechanism 6. An external gear 801 is also welded to the outside of the cylinder 802, and a meshing transmission gear 10 is provided on the side of the external gear 801. This structure allows the external gear 801 to be driven by a motor rotating the transmission gear 10, thereby enabling the movement of the scrapers 8. The bottom of the sealed cavity between the heat exchange mechanism 6 and the insulation box 501 is welded to... The ash discharge hopper 11 has an upper diameter equal to the bottom width of the scraper 8. This structure reduces the flow of solid particles after the exhaust gas is pre-filtered by the exhaust gas pretreatment box 3. After the exhaust gas enters the sealed cavity between the heat exchange mechanism 6 and the insulation box 501, the particles can be scraped into the ash discharge hopper 11 by the scraper 8 for solid particle collection. A connecting pipe 7 connects the sealed cavity between the insulation box 501 and the heat exchange mechanism 6 to the exhaust gas purification box 9. A cross-connecting pipe 601 located in the feeding system 5 is fixed in the middle of the heat exchange mechanism 6, and the heat exchange mechanism 6 is filled with phase change material 602. This structure stores heat through the phase change material 602 and transfers the heat to the feeding system 5, achieving preheating of the feed.This reduces heat waste in exhaust gases, making it more energy-efficient and environmentally friendly.
[0018] Working Principle: When using this environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes, the waste gas generated during the production process is first collected by the gas collection hood. The main body 1 of the waste gas purification and recovery device introduces the waste gas into the waste gas pretreatment box 3 through the waste gas collection pipe 2. The waste gas flows under the guidance of the spiral filter 301 and undergoes preliminary filtration through the spiral filter 301. After further filtration by the filter plate 302, the waste gas enters the blower 4 through the inlet pipe 401. The blower 4 causes the filtered waste gas to enter the sealed cavity formed between the insulation box 501 and the heat exchange mechanism 6 through the outlet pipe 402. Through heat exchange between the waste gas and the phase change material 602, the waste gas can be further purified. The phase change material 602 preheats the feed material in the feeding system 5. The drive mechanism of the transmission gear 10 is activated, which drives the external gear 801 to rotate, causing the cylinder 802 to rotate synchronously. During the rotation, the scraper 8 scrapes and cleans the side wall of the sealed cavity formed between the insulation box 501 and the heat exchange mechanism 6, and the scraped particles enter the ash discharge hopper 11. The ash discharge hopper 11 is cleaned regularly. The heat exchange mechanism 6 performs efficient preheating treatment of the feeding system 5 through the interlaced connecting pipe 601. After that, the exhaust gas enters the exhaust gas purification box 9 through the connecting pipe 7, is sprayed and purified by the exhaust gas purification box 9, and is discharged, thus completing a series of operations.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An environmentally friendly waste gas purification and recovery device for the production of PE steel wire mesh reinforced composite pipes, comprising a main body (1) of the waste gas purification and recovery device and a feeding system (5), characterized in that: The main body (1) of the waste gas purification and recovery device is provided with a waste gas pretreatment box (3) and a waste gas purification box (9), and the feeding system (5) is located between the waste gas pretreatment box (3) and the waste gas purification box (9). The upper side of the waste gas pretreatment box (3) is connected to a waste gas collection pipe (2), and a spiral filter screen (301) and a filter plate (302) are fitted inside the waste gas pretreatment box (3). The main body (1) of the waste gas purification and recovery device is also equipped with a blower (4), and the inlet and outlet ends of the blower (4) are respectively connected to an inlet pipe (401) and an outlet pipe (402). The feeding system (5) is provided with an insulation box (501) on the outside, and a heat exchange mechanism (6) is installed inside the insulation box (501). A sealing cavity is provided on the outer side below the insulation box (501) and the heat exchange mechanism (6). The air inlet pipe (401) and the air outlet pipe (402) are respectively connected to the lower side of the waste gas pretreatment box (3) and the sealing cavity between the insulation box (501) and the heat exchange mechanism (6). A connecting pipe (7) is also connected between the sealing cavity between the insulation box (501) and the heat exchange mechanism (6) and the waste gas purification box (9).
2. The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes according to claim 1, characterized in that: The main body (1) of the waste gas purification and recovery device is provided with scrapers (8) arranged in a cross shape, and the outer end of the scraper (8) is provided with a groove that is movable and cooperates with the gas outlet pipe (402).
3. The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes according to claim 2, characterized in that: The outer side of the scraper (8) is fixed with a cylinder (802) by welding, and the cylinder (802) is rotated and engaged in the sealed cavity between the heat exchange mechanism (6) and the heat preservation box (501).
4. The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes according to claim 3, characterized in that: An external gear (801) is also fixed to the outside of the cylinder (802) by welding, and a transmission gear (10) is provided on the side of the external gear (801) for meshing.
5. The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes according to claim 1, characterized in that: The bottom of the sealed cavity between the heat exchange mechanism (6) and the heat preservation box (501) is fixed by welding with an ash discharge hopper (11), and the upper diameter of the ash discharge hopper (11) is equal to the bottom width of the scraper (8).
6. The waste gas purification and recovery device for the production of environmentally friendly PE steel wire mesh reinforced composite pipes according to claim 1, characterized in that: The heat exchange mechanism (6) has an interlaced connecting pipe (601) fixed in the middle part of the feeding system (5), and the heat exchange mechanism (6) is filled with phase change material (602).