Multi-stage dry filter for waste gas produced by PPH tank

Abstract

The utility model relates to the technical field of PPH tank production auxiliary devices, in particular to a multi-stage dry filter for PPH tank production waste gas, which comprises an end cover and is characterized in that a gas inlet pipe is integrally and coaxially arranged on the end cover, the end cover is detachably connected with a barrel body which is coaxially arranged with the end cover, a gas outlet pipe is integrally and coaxially arranged at the lower end of the barrel body, and the gas outlet pipe is detachably connected with the end cover. A filter assembly is coaxially and movably sleeved with the barrel, a lower sealing ring abutting against the lower end of the filter assembly is arranged on the inner face of the barrel, two sets of automatic adjusting components symmetrically arranged about the axis of the end cover are arranged on the inner wall of the end cover, and the lower ends of the two automatic adjusting components are fixedly connected with an installation ring coaxial with the end cover. The lower end of the mounting ring is coaxially and fixedly connected with an upper sealing ring abutting against the upper end of the filtering assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for PPH tank production, in particular to a multi-stage dry filter for waste gas produced by PPH tank production. Background Art

[0002] PPH is a high molecular weight homopolypropylene. After β modification, the material has a uniform and delicate Beta crystal structure. It not only has excellent chemical resistance, high and low temperature resistance, creep resistance, and an operating temperature of 100°C, but also has the advantages of non-toxicity, light weight, and easy transportation and installation. It is a high-quality product that is more resistant to high temperatures, corrosion, and aging than PP pipes. According to the characteristics of PPH materials, PPH materials are mixed with masterbatches in a certain ratio, and then through extrusion, winding, molding, cutting, spraying, welding, assembly and other steps, it can be made into PPH liquid storage tanks, which are economical and durable, reduce equipment maintenance, and extend service life, and have superior performance.

[0003] Among them, during the welding, spraying and drying processes of the PPH storage tank, the exhaust gas needs to be collected by a gas collecting hood and sent to a dry multi-stage filter for filtration treatment, so that the subsequent emission of the exhaust gas can meet the standards. However, the cylinder of the existing multi-stage filter is mostly an integrated structure that cannot be disassembled. During use, it is not convenient to disassemble and maintain the internal filter components. Each disassembly of some detachable and washable multi-stage filters will affect the sealing of the device, and leakage is likely to occur during subsequent filtration work. In this regard, the present application specifically proposes a multi-stage dry filter for waste gas produced by PPH tanks. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a multi-stage dry filter for waste gas produced by PPH tanks, and the technical solution to the problem is to include an end cover, characterized in that the end cover is coaxially arranged with an air inlet pipe, the end cover is detachably connected with a cylinder coaxially arranged therewith, the lower end of the cylinder is coaxially arranged with an air outlet pipe, a filter assembly is coaxially movably sleeved in the cylinder, a lower sealing ring abutting the lower end of the filter assembly is arranged on the inner surface of the cylinder, two groups of automatic adjustment components symmetrically arranged about the axis are arranged on the inner wall of the end cover, the lower ends of the two automatic adjustment components are fixedly connected with mounting rings coaxially arranged with the end cover, and the lower end of the mounting ring is coaxially fixedly connected with an upper sealing ring abutting the upper end of the filter assembly;

[0005] The filter assembly includes an upper air guide sleeve abutting against the upper sealing ring and arranged coaxially, a middle air guide sleeve is coaxially arranged on the lower end of the upper air guide sleeve, a lower air guide sleeve is coaxially arranged on the lower end of the middle air guide sleeve, a plate filter cotton is coaxially fixedly connected to the inner wall of the upper air guide sleeve, a plurality of groups of activated carbon filter elements uniformly distributed vertically are fixedly connected to the inner wall of the middle air guide sleeve, and a textile fiber filter is fixedly connected to the inner wall of the lower air guide sleeve.

[0006] Preferably, each group of the automatic adjustment components includes a support rod fixedly connected to the inner wall of the end cover, the support rod is fixedly connected to a guide sleeve, the guide sleeve is coaxially movably sleeved with a connecting rod, the lower end of the connecting rod is fixedly connected to the mounting ring, the upper end of the connecting rod is fixedly connected to a baffle plate, the upper end of the baffle plate is fixedly connected to the lower end of a spring, and the upper end of the spring abuts against the upper inner wall of the end cover.

[0007] Preferably, the end cover is coaxially arranged with an upper flange, the cylinder body is coaxially arranged with a lower flange corresponding to the upper flange, and the upper flange is connected to the lower flange by bolts.

[0008] The beneficial effects of the utility model are:

[0009] 1. When the present application is in use, the end cover and the cylinder are connected by bolts through the upper flange and the lower flange, which is easy to disassemble, so as to facilitate the maintenance of the filter assembly therein. The lower end of the filter assembly, i.e., the lower guide sleeve, abuts against the lower sealing ring to ensure the sealing of the bottom, while the upper end of the filter assembly, i.e., the upper guide sleeve, abuts against the upper sealing ring, and the automatic adjustment component can ensure the sealing of the upper part, ensuring that the exhaust gas passes through the filter assembly for multi-stage filtration without leakage. The present application has a simple structure, is easy to use, and is highly practical.

[0010] 2. When the present application is in use, the filter components are provided with plate filter cotton, multiple groups of activated carbon filter elements, and textile fiber filter mesh from top to bottom. The plate filter cotton can not only filter out smoke and dust in the exhaust gas, but also distribute the exhaust gas evenly, so that the exhaust gas can flow downward evenly and pass through the activated carbon filter element, so that the activated carbon filter element can further adsorb odor and foreign matter in the exhaust gas. After that, the exhaust gas is further processed by the textile fiber filter mesh, which can further filter fine particulate matter in the gas. The exhaust gas is filtered through the above-mentioned multi-stage filtration to ensure the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a full cutaway stereoscopic view of the utility model from the first viewing angle.

[0012] Figure 2 It is an enlarged view of area A in the full-section stereoscopic view from the first perspective of the utility model.

[0013] Figure 3It is an enlarged view of area B in the full-section stereoscopic view from the first perspective of the utility model.

[0014] Figure 4 This is a three-dimensional view of the filter assembly of the utility model.

[0015] Figure 5 This is a stereoscopic view from a second viewing angle of the present invention.

[0016] Reference numerals

[0017] 1. End cover, 2. Air inlet pipe, 3. Cylinder, 4. Air outlet pipe, 5. Filter assembly, 6. Lower sealing ring, 7. Automatic adjustment component, 8. Mounting ring, 9. Upper sealing ring, 10. Upper air guide sleeve, 11. Middle air guide sleeve, 12. Lower air guide sleeve, 13. Plate filter cotton, 14. Activated carbon filter element, 15. Textile fiber filter, 16. Support rod, 17. Guide sleeve, 18. Connecting rod, 19. Baffle, 20. Spring, 21. Upper flange, 22. Lower flange, 23. Bolts. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-5 The specific implementation methods of the utility model are further described in detail.

[0019] Embodiment 1, the technical solution is that when the present application is in use, the end cover 1 and the cylinder 3 are connected by the upper flange 21 and the lower flange 22 with the bolts 23, which is easy to disassemble, so as to facilitate the maintenance of the filter assembly 5 therein. And the lower end of the filter assembly 5, namely the lower guide sleeve 17, abuts against the lower sealing ring 6 to ensure the sealing of the bottom, and the upper end of the filter assembly 5, namely the upper guide sleeve 17, abuts against the upper sealing ring 9, and cooperates with the automatic adjustment component 7 to ensure the sealing of the upper part, ensuring that the exhaust gas passes through the filter assembly 5 for multi-stage filtration without leakage. The present application has a simple structure, is easy to use, and has strong practicality. When the present application is in use, the filter assembly is provided with a plate filter cotton 13, multiple groups of activated carbon filter elements, and a textile fiber filter screen 15 from top to bottom. The plate filter cotton 13 located in the upper air guide sleeve 10 can not only filter out smoke and dust in the exhaust gas, but also evenly distribute the exhaust gas so that the exhaust gas can flow downward evenly through the activated carbon filter element in the middle air guide sleeve 11, so that the activated carbon filter element can further adsorb odor and foreign matter in the exhaust gas. After that, the exhaust gas passes through the textile fiber filter screen 15 in the lower air guide sleeve 12. The textile fiber filter screen 15 can further filter fine particulate matter in the gas. The exhaust gas undergoes the above-mentioned multi-stage filtration to ensure the filtering effect.

[0020] Embodiment 2, based on embodiment 1, when the present invention is in use, the exhaust gas enters through the air inlet pipe 2, passes through the multi-stage filtration of the filter assembly 5, and is discharged from the air outlet pipe 4. Figure 2As shown, at this time, the spring 20 is in a compressed state, and the reaction force of the spring 20 enables the upper sealing ring 9 to be tightly abutted against the upper air guide sleeve 10 to ensure the sealing of the connection.

[0021] In the present application, during the disassembly and maintenance process, when the end cover 1 and the cylinder 3 are in a separated state, the lower end of the baffle 19 contacts the upper end of the guide sleeve 17, the spring 20 is in a normal state and the upper end of the spring 20 contacts the upper inner wall of the end cover 1. When the maintenance and assembly are completed, the filter assembly 5 is placed in the cylinder 3 so that the lower air guide sleeve 12 abuts against the lower sealing ring 6 on the inner bottom surface of the cylinder 3 to ensure the sealing of the bottom. Then, the upper flange 21 of the end cover 1 is aligned with the lower flange 22 of the cylinder 3 and fastened by bolts 23. In the process of connecting the end cover 1 and the cylinder 3 and fastening them by bolts 23, the mounting ring 8 together with the upper sealing ring 9 will interact with the upper air guide sleeve 10 and act on the automatic adjustment component 7, so that the connecting rod 18 slides relative to the guide sleeve 17 on the support rod 16, and then the connecting rod 18 and The baffle 19 will move upward relative to the guide sleeve 17 and compress the spring 20. When the fastening is completed, the compressed spring 20 will press the upper sealing ring 9 against the upper air guide sleeve 10 through the reaction force to ensure the sealing there. At the same time, the compression effect can also restrict the entire filter assembly 5 in the cylinder 3 and prevent it from moving easily, ensuring the stability of the filter assembly 5 in the cylinder 3. Under this compression effect, the sealing of the lower sealing ring 6 and the lower air guide sleeve 12 can also be ensured to avoid leakage of exhaust gas during the filtration process, ensuring sufficient contact between the exhaust gas and the filter assembly 5 to complete the filtration. Under the reaction force generated by the compression of the spring 20, the sealing of the filter assembly 5 can still be ensured even if the application is disassembled and maintained for many times. The cylinder 3 and the end cover 1 not only protect the internal filter assembly 5, but its closed structure can also further prevent the leakage of exhaust gas during the filtration process.

Claims

1. A multi-stage dry filter for waste gas produced by a PPH tank, comprising an end cap (1), characterized in that: The end cover (1) is integrally and coaxially arranged with an air inlet pipe (2); the end cover (1) is detachably connected to a cylinder (3) coaxially arranged therewith; an air outlet pipe (4) is integrally and coaxially arranged at the lower end of the cylinder (3); a filter assembly (5) is coaxially movably sleeved inside the cylinder (3); a lower sealing ring (6) abutting against the lower end of the filter assembly (5) is arranged on the inner surface of the cylinder (3); two groups of automatic adjustment components (7) symmetrically arranged about the axis thereof are arranged on the inner wall of the end cover (1); the lower ends of the two automatic adjustment components (7) are fixedly connected to mounting rings (8) coaxially arranged therewith; and the lower end of the mounting ring (8) is coaxially and fixedly connected to an upper sealing ring (9) abutting against the upper end of the filter assembly (5); The filter assembly (5) comprises an upper air guide sleeve (10) abutting against the upper sealing ring (9) and arranged coaxially, a middle air guide sleeve (11) being arranged coaxially integrally at the lower end of the upper air guide sleeve (10), a lower air guide sleeve (12) being arranged coaxially integrally at the lower end of the middle air guide sleeve (11), a plate-type filter cotton (13) being coaxially fixedly connected to the inner wall of the upper air guide sleeve (10), a plurality of groups of vertically uniformly distributed activated carbon suction filter elements (14) being fixedly connected to the inner wall of the middle air guide sleeve (11), and a textile fiber filter screen (15) being fixedly connected to the inner wall of the lower air guide sleeve (12).

2. A multi-stage dry filter for waste gas produced by PPH tanks according to claim 1, characterized in that: Each group of the automatic adjustment components (7) comprises a support rod (16) fixedly connected to the inner wall of the end cover (1), the support rod (16) being fixedly connected to a guide sleeve (17), the guide sleeve (17) being coaxially movably sleeved with a connecting rod (18), the lower end of the connecting rod (18) being fixedly connected to the mounting ring (8), the upper end of the connecting rod (18) being fixedly connected to a baffle plate (19), the upper end of the baffle plate (19) being fixedly connected to the lower end of a spring (20), the upper end of the spring (20) being in contact with the upper inner wall of the end cover (1).

3. A multi-stage dry filter for waste gas produced by PPH tanks according to claim 1, characterized in that: The end cover (1) is integrally and coaxially provided with an upper flange (21), and the cylinder (3) is integrally and coaxially provided with a lower flange (22) corresponding to the upper flange (21), and the upper flange (21) and the lower flange (22) are connected via bolts (23).

Images