A separate anti-corrosion fan for acid hydrolysis tail gas

Abstract

The present invention discloses a separate anti-corrosion fan for acidolysis tail gas, comprising a fan casing, a motor arranged in the fan casing, and an impeller arranged in the fan casing and driven by the motor, the impeller comprising a wheel seat driven by the motor, and more than one blade installed on the wheel seat, the blade is provided with a reinforcing rib, the reinforcing rib is connected between the blade and the wheel seat, the reinforcing rib is provided with a number of turbulent concave rings, the wheel seat is provided with a number of turbulent strips, the surface of the impeller is coated with an anti-corrosion coating, the anti-corrosion coating is accumulated at the turbulent concave rings and the turbulent strips to form an anti-corrosion pile layer; the separate anti-corrosion fan for acidolysis tail gas can reduce the force of wind on the fan, thereby reducing the generation of microcracks and increasing the service life of the fan.

Description

Technical Field

[0001] The invention relates to a separate anti-corrosion fan for acidolysis tail gas. Background Art

[0002] Acid hydrolysis tail gas is the tail gas produced during the acid hydrolysis process. The tail gas mainly contains a large amount of water vapor, acid mist, H2S, SO2, etc., which causes serious pollution to the environment and needs to be treated before discharge. The current tail gas treatment methods require large investments and are difficult to manage. Commonly used methods include water spray method + alkali spray method, large chimney spray method, water jet absorption method, etc.

[0003] The main parts of the anti-corrosion fan are treated with anti-corrosion or made of anti-corrosion materials. Fans that are corrosion-resistant are collectively called anti-corrosion fans. Anti-corrosion fans are widely used in factories, mines, electroplating, chemical, etching, and other places for ventilation, dust removal, and odor extraction.

[0004] In the process of treating the acid hydrolysis tail gas, it is necessary to use an anti-corrosion fan to treat these acid gases. However, the existing anti-corrosion fans are mainly anti-corrosion by coating anti-corrosion coatings on the fans. However, since the base material and the anti-corrosion coating are two different materials with different linear expansion coefficients, they will produce different deformation amounts in a high-temperature and high-speed rotation environment, resulting in a large number of microcracks. There is currently no better solution, so the service life of the anti-corrosion fan is generally not high. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a separate anti-corrosion blower for acid hydrolysis exhaust gas, which can reduce the force of wind on the blower, thereby reducing the generation of microcracks and increasing the service life of the blower.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A separate anti-corrosion fan for acid hydrolysis tail gas, comprising a fan casing, a motor arranged in the fan casing, and an impeller arranged in the fan casing and driven by the motor, the impeller comprising a wheel seat driven by the motor, and one or more blades mounted on the wheel seat, the blades being provided with reinforcing ribs connected between the blades and the wheel seat, the reinforcing ribs being provided with a number of turbulent flow recesses, the wheel seat being provided with a number of turbulent flow strips, the surface of the impeller being coated with an anti-corrosion coating, the anti-corrosion coating being accumulated at the turbulent flow recesses and the turbulent flow strips to form an anti-corrosion layer.

[0008] Preferably, at least two reinforcing ribs are correspondingly mounted on each blade. The reinforcing ribs are arranged in a curved shape to fit the blade. The reinforcing ribs protrude from the blade and form strip-shaped arches on the surface of the blade.

[0009] Preferably, the anti-corrosion layer includes a concave layer filled in the spoiler concave circle, and a landslide layer extending at the side of the spoiler strip.

[0010] Preferably, the spoiler concave ring is evenly spaced on the surface of the reinforcing rib, the spoiler concave ring is a circular sunken groove, and the sunken stacking layer is filled in the spoiler concave ring to form a concave arc surface.

[0011] Preferably, a smooth transition is formed at the edge junction between the concave stack layer and the spoiler concave ring, and a depression is formed at the center position. The depression depth of the spoiler concave ring is less than the protruding thickness of the reinforcing rib on the impeller.

[0012] Preferably, the spoiler strip is arranged at an interval between two blades, the spoiler strip is arranged in a curved shape, and the bending direction is consistent with the bending direction of the blade on the wheel seat.

[0013] Preferably, the spoiler strip is composed of more than one strip-shaped protrusions, and there are gaps between the strip-shaped protrusions. The landslide type stack is arranged on the rotating side of the spoiler strip and forms an arc-shaped landslide on the rotating side of the spoiler strip.

[0014] Preferably, a smooth transition is formed at the edge junction between the landslide type pile layer and the spoiler strip, and a depression is formed at the center.

[0015] Preferably, the anti-corrosion layer consists of a primer, an intermediate paint and a topcoat, wherein the coating thickness of the primer is consistent with the coating thickness of the topcoat, and the coating thickness of the intermediate paint is greater than the coating thicknesses of the primer and the topcoat.

[0016] Preferably, the primer comprises the following ingredients: epoxy resin, deionized water, adhesion promoter HB168, zinc powder, defoamer and curing agent;

[0017] The intermediate paint comprises the following ingredients: polyacrylic acid resin, nano-diamond, nano-silicon dioxide, polyacrylamide, mica iron oxide, defoamer and curing agent;

[0018] The topcoat comprises the following ingredients: organic silicon resin, vinyl resin, EVA wear-resistant agent, nano silicon dioxide, nano zinc oxide, defoaming agent and curing agent.

[0019] The beneficial effects of the present invention are:

[0020] A spoiler structure is set at the two main wind action positions of the fan, the blades and the wheel seat of the fan. The spoiler structure includes a spoiler concave ring for disturbing the air at the blades, and a spoiler strip for disturbing the air at the wheel seat. The two spoiler structures are used to disturb the entire fan, thereby reducing the force of wind on the fan and reducing the generation of microcracks. On the other hand, considering that the spoiler air will generate a greater force on the spoiler concave ring and the spoiler strip during disturbance, an anti-corrosion layer formed by anti-corrosion coating is used to reinforce them, thereby avoiding the situation where greater crack corrosion loss occurs at the disturbance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural schematic diagram of a separate anti-corrosion blower for acid hydrolysis tail gas of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a separate anti-corrosion blower for acid hydrolysis tail gas of the present invention;

[0023] Figure 3 It is an enlarged view of the partial structure of a separate anti-corrosion fan for acid hydrolysis tail gas of the present invention;

[0024] Figure 4 The present invention is a schematic diagram of the turbulence principle of a separate anti-corrosion fan for acid hydrolysis tail gas. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Example

[0029] See also Figure 1-4 As shown, a separate anti-corrosion fan for acid hydrolysis tail gas includes a fan housing 1, a motor 2 arranged in the fan housing 1, and an impeller 3 arranged in the fan housing 1 and driven by the motor 2, the impeller 3 includes a wheel seat 31 driven by the motor 2, and one or more blades 32 installed on the wheel seat 31, the blade 32 is provided with a reinforcing rib 33, the reinforcing rib 33 is connected between the blade 32 and the wheel seat 31, the reinforcing rib 33 is provided with a plurality of flow-interfering grooves 4, the wheel seat 31 is provided with a plurality of flow-interfering strips 5, the surface of the impeller 3 is coated with an anti-corrosion coating, and the anti-corrosion coating is accumulated at the flow-interfering grooves 4 and the flow-interfering strips 5 to form an anti-corrosion layer.

[0030] At least two reinforcing ribs 33 are installed on each blade 32. The reinforcing ribs 33 are curved and fit the blade 32. The reinforcing ribs 33 protrude from the blade 32 and form strip-shaped arches on the surface of the blade 32. The number of the reinforcing ribs 33 can be set as needed. Generally speaking, installing at least two reinforcing ribs 33 on each blade 32 can achieve better reinforcement and fixing effects.

[0031] It should be noted that the arrangement of the reinforcing rib 33 is mainly used to cooperate with the installation of the spoiler groove 4. Due to the sunken design of the spoiler groove 4, a recessed position needs to be formed. Therefore, if the groove is directly set on the blade 32, the strength of the blade 32 will be reduced. Therefore, the reinforcing rib 33 protruding from the surface of the blade 32 is adopted. On the one hand, it can cooperate with the spoiler groove 4 to avoid the reduction of the strength of the blade 32. On the other hand, it can form a certain spoiler effect and reduce the force of wind on the surface of the blade 32.

[0032] The anti-corrosion layer includes a concave layer 6 filled in the spoiler concave ring 4 and a landslide layer 7 extending at the side of the spoiler strip 5 .

[0033] The spoiler concave ring 4 is evenly spaced on the surface of the reinforcing rib 33. The spoiler concave ring 4 is a circular sunken groove. The recessed layer 6 fills the spoiler concave ring 4 and forms an inner concave arc surface. A smooth transition is formed at the edge junction between the recessed layer 6 and the spoiler concave ring 4, and a recess is formed at the center position. The recessed depth of the spoiler concave ring 4 is less than the protruding thickness of the reinforcing rib 33 on the impeller 3.

[0034] The spoiler strip 5 is arranged at the interval position between two blades 32. The spoiler strip 5 is arranged in a curved shape, and the bending direction is consistent with the bending direction of the blade 32 on the wheel seat 31. The spoiler strip 5 is composed of more than one strip-shaped protrusions, and there is a gap between each strip-shaped protrusion. The landslide type stack 7 is arranged on the rotating side of the spoiler strip 5, and forms an arc-shaped landslide on the rotating side of the spoiler strip 5. The edge junction between the landslide type stack 7 and the spoiler strip 5 forms a smooth transition, and a depression is formed at the center position.

[0035] The anti-corrosion layer is composed of a primer, an intermediate paint and a topcoat, wherein the coating thickness of the primer is consistent with the coating thickness of the topcoat, and the coating thickness of the intermediate paint is greater than the coating thickness of the primer and the topcoat. The non-anti-corrosion layer on the surface of the impeller 3 uses a primer, an intermediate paint and a topcoat of consistent thickness. The reason for using different thicknesses in the anti-corrosion layer is that after long-term use, the surface of the anti-corrosion layer will still be worn. At this time, by thickening the intermediate paint, the wear can be mainly relied on the intermediate paint with higher wear resistance to resist wear, thereby greatly improving the overall durability.

[0036] The primer includes the following components by weight: 32 parts of epoxy resin, 18 parts of deionized water, and adhesion promoter HB168 2 parts, zinc powder 5 parts, defoamer 0.3 parts and curing agent 0.7 parts; the intermediate paint comprises the following components in parts by weight: 30 parts of polyacrylic resin, 13 parts of nano diamond, 13 parts of nano silicon dioxide, 5 parts of polyacrylamide, 10 parts of mica iron oxide, 1 part of defoamer and 2 parts of curing agent; the topcoat comprises the following components in parts by weight: 20 parts of silicone resin, 20 parts of ethylene resin, 3 parts of EVA wear-resistant agent, 15 parts of nano silicon dioxide, 15 parts of nano zinc oxide, 0.3 parts of defoamer and 0.5 parts of curing agent. It should be noted that the primer has stronger adhesion, while the intermediate paint has stronger adhesion to the primer and overall wear resistance, and the topcoat is the layer with the highest wear resistance. On the other hand, the material composition of the primer, intermediate paint and topcoat is not unique. In this embodiment, only a combination with better effect is selected, and the use of other anti-corrosion coatings with equivalent or similar effects in this field does not affect the implementation of this solution.

[0037] The beneficial effects of the present invention are:

[0038] A spoiler structure is set at the two main wind action positions of the fan, the blades and the wheel seat of the fan. The spoiler structure includes a spoiler concave ring for disturbing the air at the impeller, and a spoiler strip for disturbing the air at the wheel seat. The two spoiler structures are used to disturb the entire fan, thereby reducing the force of wind on the fan and reducing the generation of microcracks. On the other hand, considering that the spoiler air will generate a greater force on the spoiler concave ring and the spoiler strip during turbulence, an anti-corrosion layer formed by anti-corrosion coating is used to reinforce them, thereby avoiding the situation where greater crack corrosion loss is generated at the turbulence.

[0039] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A separate anti-corrosion fan for acid hydrolysis tail gas, comprising a fan housing, a motor disposed in the fan housing, and an impeller disposed in the fan housing and driven by the motor, characterized in that: The impeller includes a wheel seat driven by a motor, and more than one blade installed on the wheel seat, the blade is provided with a reinforcing rib, the reinforcing rib is connected between the blade and the wheel seat, the reinforcing rib is provided with a number of turbulent concave rings, the wheel seat is provided with a number of turbulent strips, the surface of the impeller is coated with anti-corrosion paint, and the anti-corrosion paint is accumulated at the turbulent concave rings and the turbulent strips to form an anti-corrosion pile layer.

2. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 1, characterized in that: At least two reinforcing ribs are correspondingly mounted on each blade. The reinforcing ribs are arranged in a curved shape to fit the blades. The reinforcing ribs protrude from the blades and form strip-shaped arches on the surface of the blades.

3. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 1, characterized in that: The anti-corrosion layer comprises a concave layer filled in a spoiler concave circle and a landslide layer extending at the side of a spoiler strip.

4. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 3, characterized in that: The spoiler concave ring is evenly spaced and distributed on the surface of the reinforcing rib. The spoiler concave ring is a circular sunken groove. The sunken stacking layer is filled in the spoiler concave ring to form an inwardly concave arc surface.

5. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 4, characterized in that: A smooth transition is formed at the edge junction between the concave stack layer and the spoiler concave ring, and a concave is formed at the center. The concave depth of the spoiler concave ring is less than the protruding thickness of the reinforcing rib on the impeller.

6. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 3, characterized in that: The spoiler strip is arranged at the interval position between the two blades, the spoiler strip is arranged in a curved shape, and the bending direction is consistent with the bending direction of the blades on the wheel seat.

7. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 6, characterized in that: The spoiler strip is composed of more than one strip-shaped protrusions, and there are gaps between the strip-shaped protrusions. The landslide type stack is arranged on the rotating side of the spoiler strip and forms an arc-shaped landslide on the rotating side of the spoiler strip.

8. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 7, characterized in that: A smooth transition is formed at the edge junction between the landslide-type pile layer and the spoiler strip, and a depression is formed at the center.

9. The separate anti-corrosion blower for acid hydrolysis tail gas according to any one of claims 1 to 8, characterized in that: The anti-corrosion layer consists of a primer, an intermediate paint and a topcoat, wherein the coating thickness of the primer is consistent with the coating thickness of the topcoat, and the coating thickness of the intermediate paint is greater than the coating thicknesses of the primer and the topcoat.

10. The separate anti-corrosion blower for acid hydrolysis tail gas according to claim 9, characterized in that: The primer comprises the following components: epoxy resin, deionized water, adhesion promoter HB168, zinc powder, defoamer and curing agent; the intermediate paint comprises the following components: polyacrylic acid resin, nano diamond, nano silicon dioxide, polyacrylamide, mica iron oxide, defoamer and curing agent; the topcoat comprises the following components: organic silicon resin, ethylene resin, EVA wear-resistant agent, nano silicon dioxide, nano zinc oxide, defoamer and curing agent.

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