Environment-friendly cyclic utilization device for continuous hot galvanizing passivation solution

Abstract

The invention discloses an environment-friendly cyclic utilization device for a continuous hot galvanizing passivation solution. The environment-friendly cyclic utilization device comprises a passivation solution filtering treatment box, a passivation solution circulating box, a second passivation solution filtering treatment box, a second passivation solution circulating box, a roller coater and a waste gas washing treatment device, the device is composed of the circulating box, the environment-friendly treatment box, the smashing and drying box, the roller coater, the pipeline, the waste gas collecting and treating device and the like, after passivation liquid is effectively filtered and treated, the pure passivation liquid is obtained and recycled, and through environment-friendly particulate matter drying treatment, environmental protection events caused by conveying pipeline blockage are prevented; solid residues intercepted on a filtering object can be automatically and fully cleaned and uniformly collected, the automation degree is high, the practicability is high, the corrosion resistance of a product is improved, resources are saved, the environment-friendly treatment difficulty is reduced, and the cost and the production efficiency are reduced.

Description

Technical Field

[0001] The invention relates to the field of hot-dip galvanizing passivation liquid circulation and recovery equipment, in particular to a continuous hot-dip galvanizing passivation liquid environmentally friendly circulation utilization device. Background Art

[0002] Zinc is an anodic coating for steel products. When corrosion occurs, the coating will corrode first. Since zinc is an active metal with a relatively negative potential, it is easy to oxidize. When used as a coating, it will accelerate the corrosion rate when it is combined with positive potential metals. If zinc corrodes quickly, it will not play a protective role for the substrate.

[0003] Galvanizing refers to a surface treatment technology that coats a layer of zinc on the surface of metal, alloy or other materials to achieve aesthetic and rust-proof effects. The main method used is hot-dip galvanizing, and the passivation solution can make the metal surface passive. It is generally used for post-plating treatment of zinc plating, cadmium plating and other coatings. The purpose is to form a surface state on the coating surface that can prevent the normal reaction of the metal, improve its corrosion resistance, and increase the beauty of the product. By changing the surface potential through passivation treatment, the corrosion resistance of the surface will be greatly improved, and the protective effect of the coating on the substrate will be enhanced. Therefore, all zinc-plated layers basically need to undergo various passivation treatments to achieve a protective effect.

[0004] At present, when the recycling device of hot-dip galvanizing passivation liquid is in use, a filter object is usually used to filter out the solid residue in the passivation liquid to be treated. In order to avoid excessive solid residue on the filter object and affect the filter residue efficiency of the filter object, the crystals produced by the oxidation of the passivation liquid circulation tank and the buffer tank are attached to the material tray and the circulation pipeline system of the roller coater. The generated particulate matter still needs to be manually cleaned up from the solid residue on the filter object. This cleaning method is not only time-consuming and labor-intensive, but also has the technical problem of pipeline blockage caused by insufficient cleaning. Summary of the invention

[0005] The purpose of the present invention is to provide an environmentally friendly recycling device for continuous hot-dip galvanizing passivation liquid, aiming to solve the technical problems that the existing recycling device for hot-dip galvanizing passivation liquid needs to manually clean the solid residue on the filter object, which is time-consuming and labor-intensive, and there is a problem of pipeline blockage caused by untimely cleaning.

[0006] To achieve its purpose, the present invention adopts the following technical solution: A continuous hot-dip galvanizing passivation liquid environmentally friendly recycling device, comprising a passivation liquid filtering and processing box, a passivation liquid circulation box, a second passivation liquid filtering and processing box, a second passivation liquid circulation box, a roller coater and an exhaust gas washing and processing device; the passivation liquid filtering and processing box and the second passivation liquid filtering and processing box have the same structure and are arranged in a coplanar mirror image, and the passivation liquid circulation box and the second passivation liquid circulation box have the same structure and are arranged in a coplanar manner; The passivation liquid filtering and treatment box comprises an environmental protection treatment box, a waste gas discharge port is provided on the top of the environmental protection treatment box, and a circulation box liquid inlet is provided on one side of the bottom, and the circulation box liquid inlet is connected to the circulation box return liquid pipeline delivery pump inlet arranged on the top of the environmental protection treatment box through a pipe; an inclined guide plate inclined upward is provided at the liquid inlet of the bottom circulation box in the environmental protection treatment box, and a heating plate is provided at the bottom of the inclined guide plate; a filter screen is provided above the inclined guide plate in the environmental protection treatment box, and the high end of the filter screen is the particle discharge port, and it is connected to the inner wall of the environmental protection treatment box through the filter screen rotating support block via the filter screen support block, and a filter screen discharge port support block connected to the inner wall of the environmental protection treatment box is provided at the bottom of the filter screen rotating support block, and the other end of the filter screen is connected to the inner wall of the environmental protection treatment box through a filter screen positioning device; a liquid flow main line is provided above the filter screen, and one end of the liquid flow main line is provided with a pipe opening facing the filter screen surface screen A liquid distribution pipe, the other end of the main liquid flow line is connected to the outer wall of the top of the environmental protection treatment box through the filter screen lifting connection plate through the pneumatic lifting and vibration device; the middle part of the main liquid flow line is connected to the passivation liquid circulation box through the filter hose; a waste material crushing and drying treatment box is provided at the bottom outside the environmental protection treatment box, and an arc cover and a material receiving guide plate are provided at the top opening of the waste material crushing and drying treatment box, and a waste gas discharge connection port of the drying treatment box is provided at the top of the arc cover; a sealed discharge port guide plate connected to the filter screen discharge port is provided outside the environmental protection treatment box, and the top of the sealed discharge port guide plate is connected to the outer wall of the environmental protection treatment box through the first guide plate connecting block, and the bottom of the sealed discharge port guide plate is connected to the outer wall of the environmental protection treatment box through the second guide plate connecting block; a connecting bracket is provided on the top of the side of the environmental protection treatment box close to the filter screen discharge port, and a sealing plate telescopic cylinder is provided between the connecting bracket and the second guide plate connecting block; The passivation liquid circulation box comprises a passivation liquid circulation box body, and a passivation liquid circulation box exhaust gas discharge connection port and a temperature and liquid level detection device are arranged on the top of the passivation liquid circulation box body; the passivation liquid circulation box body is connected to the outlet of the circulation box return liquid pipeline delivery pump through a pipeline through a circulation box return liquid pipeline inserted into the top of the passivation liquid circulation box body; a passivation liquid overflow port is arranged on the top of one side of the passivation liquid circulation box body, and a passivation liquid discharge port is arranged on the bottom, and the passivation liquid overflow port is respectively connected to the passivation liquid discharge port and the passivation liquid delivery pipeline through the passivation liquid overflow pipeline, and the passivation liquid delivery pipeline is connected to the filter hose; The roller coater comprises a roller coater tray, a roller coater roller system is arranged above the roller coater tray, a liquid discharge port with a filter is arranged at the bottom of the roller coater tray, and a tray liquid discharge port electromagnetic valve is arranged on the liquid discharge port pipeline with the filter; a liquid adding flow regulator is arranged just above the roller coater roller system, a waste gas collecting cover is arranged above the liquid adding flow regulator, and a waste gas scrubber is arranged on the top of the waste gas collecting cover; the liquid adding flow regulator is connected to the passivation liquid outlet of the second circulation box of the passivation liquid and the passivation liquid delivery pipeline respectively through a rotating liquid adding pipeline, a passivation liquid delivery pipeline inlet electromagnetic valve, a passivation liquid delivery pump and a passivation liquid delivery pipeline outlet electromagnetic valve are arranged in sequence on the passivation liquid delivery pipeline, and a second circulation box electromagnetic valve is arranged on the passivation liquid outlet pipeline of the second circulation box of the passivation liquid; The waste gas washing and treatment device is connected with the waste gas scrubber through the waste gas collecting pipeline of the roller coater. The top of the waste gas washing and treatment device is provided with a standard waste gas emission pipe, and the bottom is connected with the waste gas emission connection port of the waste material crushing and drying treatment box through the waste gas collecting main pipeline of the environmental protection treatment box and the metal hose in sequence; the waste gas collecting main pipeline of the environmental protection treatment box is also provided with a passivation liquid circulation box waste gas pipeline and an environmental protection treatment box waste gas collecting branch pipeline, the passivation liquid circulation box waste gas pipeline is connected with the two passivation liquid circulation box waste gas emission connection ports, and the waste gas collecting branch pipeline of the environmental protection treatment box is respectively connected with the waste gas emission ports of the two environmental protection treatment boxes.

[0007] As a further improvement of the technical solution of the present invention, a collecting guide plate in an inverted eight-shaped shape is provided inside the waste crushing and drying treatment box, and the collecting guide plate is connected to the feeding port of the particle crushing device. The particle crushing device is driven and operated by a crushing drive motor, and the bottom of the particle crushing device is a waste discharge port; a waste transport trolley is provided below the particle crushing device in the waste crushing and drying treatment box, and the waste transport trolley is used to receive powdered waste and has an electric heating dryer at the bottom, and a waste trolley transport door is provided on one side of the bottom of the waste crushing and drying treatment box opposite to the waste transport trolley.

[0008] Furthermore, the filter comprises a triangular edge guide plate and an arc-shaped material guide plate, the triangular edge guide plate is provided with a particle storage cavity, and a plurality of groups of filter mesh holes are equidistantly arranged at the end of the arc-shaped material guide plate.

[0009] Furthermore, a liquid flow cut-off solenoid valve is provided on the filter hose; a backwashing water inlet pipeline is also provided on one side of the filter hose, and a backwashing solenoid valve is provided on the backwashing water inlet pipeline.

[0010] Furthermore, the filter screen positioning device includes a positioning buffer block connected to the inner wall of the environmental protection treatment box, a limiting block is provided on the inner wall of the environmental protection treatment box below the positioning buffer block, and a buffer spring is provided between the positioning buffer block and the limiting block.

[0011] Furthermore, one end of the arc cover is connected to the waste crushing and drying treatment box through an arc cover opening handle, and the other end is connected to the free end of the material receiving guide plate through an arc cover elastic rubber sealing device.

[0012] Furthermore, the rotary liquid adding pipeline is connected to a pipeline leading to a passivation liquid outlet of a second circulation tank of the passivation liquid and a passivation liquid delivery pipeline through a liquid adding pipeline rotary joint.

[0013] Furthermore, the temperature and liquid level detection device is controlled and powered by an electric control box of the detection device on the top thereof.

[0014] Furthermore, the connecting bracket is connected to the fixed end of the sealing plate telescopic cylinder via a rotating connecting pin of the telescopic cylinder.

[0015] Furthermore, the overflow port of the passivation liquid is provided with an overflow port electromagnetic valve, and the passivation liquid discharge port is provided with a passivation liquid outlet electromagnetic valve.

[0016] The present invention provides an environmentally friendly recycling device for continuous hot-dip galvanizing passivation solution, which has the following beneficial effects: It is composed of several parts of equipment, including a circulation box, an environmental protection treatment box, a crushing and drying box, a roller coater, pipelines and exhaust gas collection and treatment equipment. The passivation liquid is effectively filtered and treated to obtain pure passivation liquid for recycling. After environmentally friendly particle drying treatment, it prevents environmental incidents caused by clogging of the conveying pipeline. In addition, it can automatically and fully clean up and collect the solid residues intercepted on the filter object. It has a high degree of automation and strong practicality, improves the corrosion resistance of the product, saves resources, reduces the difficulty of environmental protection treatment, and reduces costs and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an environmentally friendly recycling device for continuous hot-dip galvanizing passivation solution of the present invention; Figure 2 is the front view of the filter screen; Figure 3 is a top view of the filter screen; Figure 4 is a side view of the filter screen; Figure 5 It is the axial side view of the filter screen; Figure 6 This is the main view of the passivation liquid environmental protection treatment box; Figure 7 This is a top view of the passivation liquid environmental protection treatment box; Figure 8 This is a side view of the passivation liquid environmental protection treatment box; Fig. 9 This is the isometric view of the passivation liquid environmental treatment box; Fig.10 It is an axonometric view of the fluid distribution pipeline; Fig.11 It is a schematic diagram of the structure of a waste crushing and drying treatment box; Fig.12 It is a schematic diagram of the waste gas treatment structure in a continuous hot-dip galvanizing passivation solution environmentally friendly recycling device of the present invention; Figure numerals: 1. Passivation liquid filtration treatment box: 101. Environmental protection treatment box, 102. Waste gas discharge port, 103. Pneumatic lifting and vibration device, 104. Filter hose, 1041. Liquid main pipeline, 1042. Liquid distribution pipe, 1043. Liquid cut-off solenoid valve, 1044. Backwashing solenoid valve, 1045. Backwashing water inlet pipeline, 105. Waste crushing and drying treatment box, 1051. Drying treatment box waste gas discharge connection port, 1052. Arc cover, 10521. Arc cover elastic rubber sealing device, 1053. Arc cover opening handle, 1054. Material receiving guide plate, 1055. Collection guide plate, 1056. Crushing drive motor, 1057. Particle crushing device, 1058. Waste discharge port, 10 59. Waste transport trolley, 10591. Waste trolley transport door, 10592. Electric heating dryer, 10593. Powder waste, 106. Filter screen, 1061. Filter screen lifting connection plate, 1062. Filter screen support block, 1063. Arc guide plate, 1064. Filter mesh, 1065. Triangular edge guide plate, 1066. Particle storage cavity, 1067. Particle discharge port, 1068. Filter screen rotation support block, 107. Inclined guide plate, 1071. Heating plate, 108. Positioning buffer block, 1081. Buffer spring, 1082. Limit block, 1083. Second guide plate connection block, 1084. First guide plate connection block, 10841. Sealing discharge port guide plate, 1085. Filter screen discharge 1. Support block, 1086. Sealing plate telescopic cylinder, 1087. Telescopic cylinder rotation connecting pin; 2. Passivation liquid circulation box: 201. Passivation liquid circulation box body, 202. Passivation liquid circulation box exhaust gas discharge connection port; 203. Temperature and liquid level detection device, 204. Detection device electrical control box, 205. Circulation box return liquid pipeline, 206. Circulation box return liquid pipeline delivery pump, 207. Circulation box liquid inlet, 208. Passivation liquid overflow pipeline, 2081. Overflow port solenoid valve, 2082. Passivation liquid overflow port, 2083. Passivation liquid outlet solenoid valve, 2084. Passivation liquid delivery pipeline, 20841. Passivation liquid discharge port, 2085. Passivation liquid delivery pipeline inlet solenoid valve, 2086. Passivation liquid delivery pump, 2087. Passivation Liquid delivery pipeline outlet solenoid valve, 2088, second circulation box solenoid valve, 209, environmental protection treatment box exhaust gas collection main pipeline, 2091, metal hose, 2010, environmental protection treatment box exhaust gas collection branch pipeline; 3, passivation liquid second filtration treatment box; 4, second passivation liquid circulation box; 5, roller coater: 501, roller coater material tray, 5011, material tray with filter net drain port, 5012, material tray drain port solenoid valve, 502, liquid adding flow regulator, 503, exhaust gas collection hood, 5031, exhaust gas scrubber, 504, liquid adding pipeline rotary joint, 505, rotary liquid adding pipeline; 6, exhaust gas washing treatment device: 601, standard exhaust gas discharge pipe, 602, roller coater exhaust gas collection pipeline, 603, passivation liquid circulation box exhaust pipeline. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The pneumatic rising and vibration device 103 used in the present invention selects the Ande brand high-frequency electromagnetic vibrator ZDQ50 ZDQ150 ZDQ260 of Anyang Ande Electronic Machinery Co., Ltd., the temperature and liquid level detection device 203 is the straight rod thermocouple MT-600 needle series temperature sensor of Hequan Instrument Technology Co., Ltd. and the WSR200 / WSR550 radar level meter of Hangzhou Meikong Automation Technology Co., Ltd.), the liquid addition flow regulator 502 is selected from the clamp-type flow sensor FD-Q series of Keyence (China) Co., Ltd., the exhaust gas scrubber 5031 is purchased from Guangdong Guohuan Environmental Protection Technology Co., Ltd., model PLT-G), and the exhaust gas washing treatment device 6 is a stainless steel washing spray tower of Guangdong Zhengzhou Environmental Protection Technology Co., Ltd.-model ZZPLT-100.

[0020] like Figure 1-12 As shown, the present invention provides a continuous hot-dip galvanizing passivation solution environmentally friendly recycling device, comprising a passivation solution filtering and processing box 1, a passivation solution circulation box 2, a passivation solution second filtering and processing box 3, a second passivation solution circulation box 4, a roller coater 5 and an exhaust gas washing and processing device 6; the passivation solution filtering and processing box 1 and the passivation solution second filtering and processing box 3 have the same structure and are arranged in a coplanar mirror image, and the passivation solution circulation box 2 and the second passivation solution circulation box 4 have the same structure and are arranged in a coplanar manner; The passivation liquid filtering treatment box 1 comprises an environmental protection treatment box 101, the top of the environmental protection treatment box 101 is provided with an exhaust gas discharge port 102, and one side of the bottom is provided with a circulation box liquid inlet 207, and the circulation box liquid inlet 207 is connected to the inlet of the circulation box return liquid pipeline delivery pump 206 arranged on the top of the environmental protection treatment box 101 through a pipeline; an inclined guide plate 107 is provided at the bottom of the circulation box 101 at an angle upward, and a heating plate 1071 is provided at the bottom of the inclined guide plate 107; a filter screen 106 is provided above the inclined guide plate 107 in the environmental protection treatment box 101, and a filter screen 106 is provided to filter the liquid. The high end of the screen 106 is a particle discharge port 1067, and is connected to the inner wall of the environmental protection treatment box 101 through the filter screen support block 1062 and the filter screen rotating support block 1068. The bottom of the filter screen rotating support block 1068 is provided with a filter screen discharge port support block 1085 connected to the inner wall of the environmental protection treatment box 101. The other end of the filter screen 106 is connected to the inner wall of the environmental protection treatment box 101 through a filter screen positioning device; a liquid flow main line 1041 is provided above the filter screen 106, and one end of the liquid flow main line 1041 is provided with a pipe opening toward the surface of the filter screen 106. The liquid distribution pipe 1042, the other end of the main liquid flow path 1041 is connected to the top outer wall of the environmental protection treatment box 101 through the filter screen lifting connection plate 1061 through the pneumatic lifting and vibration device 103; the middle part of the main liquid flow path 1041 is connected to the passivation liquid circulation box 2 through the filter hose 104; the waste crushing and drying treatment box 105 is provided at the bottom of the outer side of the environmental protection treatment box 101, and the top opening of the waste crushing and drying treatment box 105 is provided with an arc cover 1052 and a material receiving guide plate 1054, and the top of the arc cover 1052 is provided with a drying treatment box exhaust gas discharge connection port 1 051; the environmental protection treatment box 101 is provided with a sealed discharge port guide plate 10841 connected to the discharge port of the filter screen 106, the top of the sealed discharge port guide plate 10841 is connected to the outer wall of the environmental protection treatment box 101 through a first guide plate connecting block 1084, and the bottom of the sealed discharge port guide plate 10841 is connected to the outer wall of the environmental protection treatment box 101 through a second guide plate connecting block 1083; the top of the environmental protection treatment box 101 near the discharge port of the filter screen 106 is provided with a connecting bracket, and a sealing plate telescopic cylinder 1086 is provided between the connecting bracket and the second guide plate connecting block 1083; The passivation liquid circulation box 2 includes a passivation liquid circulation box body 201, and a passivation liquid circulation box exhaust gas discharge connection port 202 and a temperature and liquid level detection device 203 are provided on the top of the passivation liquid circulation box body 201; the passivation liquid circulation box body 201 is connected to the outlet of the circulation box return liquid pipeline delivery pump 206 through a pipeline through a circulation box return liquid pipeline 205 inserted into the top of the passivation liquid circulation box body 201; a passivation liquid overflow port 2082 is provided on the top of one side of the passivation liquid circulation box body 201, and a passivation liquid discharge port 20841 is provided on the bottom, and the passivation liquid overflow port 2082 is respectively connected to the passivation liquid discharge port 20841 and the passivation liquid delivery pipeline 2084 through the passivation liquid overflow pipeline 208, and the passivation liquid delivery pipeline 2084 is connected to the filter hose 104; The roller coater 5 comprises a roller coater tray 501, a roller coater roller system is arranged above the roller coater tray 501, a liquid discharge port 5011 with a filter is arranged at the bottom of the roller coater tray 501, and a tray liquid discharge port electromagnetic valve 5012 is arranged on the liquid discharge port 5011 with a filter; a liquid addition flow regulator 502 is arranged just above the roller coater roller system, an exhaust gas collection cover 503 is arranged above the liquid addition flow regulator 502, and an exhaust gas scrubber 503 is arranged on the top of the exhaust gas collection cover 503 1; the liquid adding flow regulator 502 is connected to the passivation liquid second circulation box 4 passivation liquid outlet and the passivation liquid delivery pipeline 2084 through the pipeline respectively through the rotating liquid adding pipeline 505, the passivation liquid delivery pipeline 2084 is provided with a passivation liquid delivery pipeline inlet solenoid valve 2085, a passivation liquid delivery pump 2086 and a passivation liquid delivery pipeline outlet solenoid valve 2087 in sequence, and the passivation liquid second circulation box 4 passivation liquid outlet pipeline is provided with a second circulation box solenoid valve 2088; The waste gas washing treatment device 6 is connected to the waste gas scrubber 5031 through the roller coater waste gas collecting pipeline 602. The top of the waste gas washing treatment device 6 is provided with a standard waste gas discharge pipe 601, and the bottom is connected to the waste material crushing and drying treatment box waste gas discharge connection port 1051 through the environmental protection treatment box waste gas collection main pipeline 209 and the metal hose 2091 in sequence; the environmental protection treatment box waste gas collection main pipeline 209 is also provided with a passivation liquid circulation box waste gas pipeline 603 and an environmental protection treatment box waste gas collection branch pipeline 2010, the passivation liquid circulation box waste gas pipeline 603 is connected to the two passivation liquid circulation box waste gas discharge connection ports, and the environmental protection treatment box waste gas collection branch pipeline 2010 is respectively connected to the two environmental protection treatment box waste gas discharge ports.

[0021] Specifically, the waste crushing and drying treatment box 105 is provided with an inverted eight-shaped collecting guide plate 1055 inside, and the collecting guide plate 1055 is connected to the feeding port of the particle crushing device 1057. The particle crushing device 1057 is driven by a crushing drive motor 1056, and the bottom of the particle crushing device 1057 is a waste discharge port 1058; a waste transport trolley 1059 is provided below the particle crushing device 1057 in the waste crushing and drying treatment box 105, and the waste transport trolley 1059 is used to receive powdered waste 10593 and has an electric heating dryer 10592 at the bottom, and a waste trolley transport door 10591 is provided on one side of the bottom of the waste crushing and drying treatment box 105 opposite to the waste transport trolley 1059.

[0022] Specifically, the filter screen 106 includes a triangular edge guide plate 1065 and an arc-shaped material guide plate 1063 . The triangular edge guide plate 1065 is provided with a particle storage cavity 1066 . A plurality of groups of filter mesh holes 1064 are equidistantly arranged at the end of the arc-shaped material guide plate 1063 .

[0023] Specifically, a liquid flow cut-off solenoid valve 1043 is provided on the filter hose 104 ; a backwashing water inlet pipeline 1045 is also provided on one side of the filter hose 104 , and a backwashing solenoid valve 1044 is provided on the backwashing water inlet pipeline 1045 .

[0024] Specifically, the filter screen positioning device includes a positioning buffer block 108 connected to the inner wall of the environmental protection treatment box 101, a limit block 1082 is provided on the inner wall of the environmental protection treatment box 101 below the positioning buffer block 108, and a buffer spring 1081 is provided between the positioning buffer block 108 and the limit block 1082.

[0025] Specifically, one end of the arc cover 1052 is connected to the waste crushing and drying processing box 105 through the arc cover opening handle 1053, and the other end is connected to the free end of the material receiving guide plate 1054 through the arc cover elastic rubber sealing device 10521.

[0026] Specifically, the rotary liquid adding pipeline 505 is connected to the pipeline leading to the passivation liquid outlet of the second passivation liquid circulation box 4 and the passivation liquid delivery pipeline 2084 through the liquid adding pipeline rotary joint 504.

[0027] Specifically, the temperature and liquid level detection device 203 is controlled and powered by the detection device electric control box 204 on the top thereof.

[0028] The connecting bracket is connected to the fixed end of the sealing plate telescopic cylinder 1086 through the telescopic cylinder rotating connecting pin 1087. The passivation liquid overflow port 2082 is provided with an overflow port electromagnetic valve 2081, and the passivation liquid discharge port 20841 is provided with a passivation liquid outlet electromagnetic valve 2083.

[0029] In practical applications, the passivation liquid filtration treatment box 1 mainly processes the passivation liquid from the passivation liquid circulation box 2 or the passivation liquid in the roller coater tray 501 of the roller coater 5. The passivation liquid in the roller coater tray 501 is transported to the passivation liquid delivery pipeline 2084 through the drainage pipe, passes through the liquid flow cut-off solenoid valve 1043, and then enters the passivation liquid filtration treatment box 1 for treatment. The passivation liquid in the passivation liquid circulation box 2 passes through the passivation liquid outlet solenoid valve 2083, is transported to the passivation liquid delivery pipeline 2084 through the drainage pipe, passes through the liquid flow cut-off solenoid valve 1043, and then enters the passivation liquid filtration treatment box 1 for treatment.

[0030] The main function of the passivation liquid filtering and processing box 1 is to make the crystal particles or other solid impurities in the passivation liquid pass through the filter hose 104, and the main liquid flow line 1041 connected to the filter hose 104 is diverted to the slit liquid flow distribution pipe 1042, and then the passivation liquid flows into the filter screen 106 by gravity for filtration. One end of the filter screen 106 is in sliding contact with the positioning buffer block 108 installed on the inner wall of the passivation liquid filtering and processing box 1, and the other end is rotatably connected through the pin on the filter screen outlet support block 1085.

[0031] The filter screen 106 includes a triangular side guide plate 1065 and an arc-shaped guide plate 1063. The triangular side guide plate 1065 is provided with a particle storage cavity 1066. The bottom of the filter screen 106 is a filter screen composed of multiple groups of closely packed filter meshes 1064. The size of the filter meshes 1064 ranges from 80 meshes to 200 meshes. Since the passivation liquid is divided into a multi-stage split flow design in the filter screen 106, in order to effectively filter the impurities in the passivation liquid, a smaller mesh is designed to have a better filtering effect. The triangular side guide plate 1065 is designed in a triangular shape, which can better guide the splashed passivation liquid into the particle storage cavity 1066, thereby increasing the storage space of the particle storage cavity 1066. A symmetrically designed filter screen lifting connecting plate 1061 is fixedly connected to the filter screen 106, which is rotatably connected to the pneumatic lifting and vibration device 103 through a pin shaft. The vibration of the pneumatic lifting and vibration device 103 makes it easier to filter the passivation liquid to prevent the passivation liquid particles from clogging the filter mesh 1064. The pneumatic lifting and vibration device 103 also has a rising and falling function. When the particles filtered out of the particle storage cavity 1066 inside the filter screen 106 need to be cleaned, the cylinder in the pneumatic lifting and vibration device 103 contracts, causing the filter screen 106 rotatably connected thereto to rise, and the particles are poured out from the particle discharge port 1067 of the filter screen 106 and fall into the waste crushing and drying treatment box 105 for drying.

[0032] One end of the filter screen 106 is supported on the contact surface of the positioning buffer block 108. The angle formed by the horizontal plane of the contact point of the contact surface and the bottom of the filter screen 106 is 4°~10° in the normal filtering state ( Figure 6), when pouring out the particles, the filter screen 106 rotates and the particles are poured out from the other side of the arc-shaped guide plate 1063 as a support plate. In the process of pouring out the particles, the vibration device of the pneumatic lifting and vibration device 103 is started, and the vibration generated is transmitted to the vibration screen 106 through the cylinder rod, shaking off the particles to loosen and fall.

[0033] The positioning buffer block 108 is inserted into the limiting block 1082 , and a buffer spring 1081 is installed inside the positioning buffer block 108 to eliminate the impact force generated when the filter screen 106 descends, and also to provide a buffer gap when the filter screen 106 vibrates.

[0034] The bottom of the passivation liquid filtration treatment box 1 is installed with an inclined guide plate 107 with a heating plate 1071, which is inclined to face the liquid inlet 207 of the circulation box. This is mainly to leave a small amount of passivation liquid after the passivation liquid is extracted from the bottom of the box, which is convenient for cleaning and saving the consumption of passivation liquid. The heating plate 1071 is used to dry the box after flushing it. During the annual equipment overhaul, the downtime is long and the box needs to be thoroughly cleaned and dried for maintenance. It can also be used to heat the passivation liquid in the cold winter when the plant temperature drops and the passivation liquid cannot be kept above the effective temperature of 5°C to ensure that the passivation liquid is produced at a normal temperature.

[0035] The main liquid flow line 1041 and the liquid flow distribution pipe 1042 inside the passivation liquid filtering treatment box 1 are installed on the top of the filter screen 106, and rotate with the rotation of the filter screen 106, and the filter hose 104 moves accordingly.

[0036] The top of the box body of the passivation liquid filtering and processing box 1 extends out to form a connecting bracket for installing the sealing plate telescopic cylinder 1086. The sealing plate telescopic cylinder 1086 is rotatably connected to the telescopic cylinder rotation connection pin 1087 through the telescopic cylinder connecting plate. The connecting plate of the telescopic cylinder rotation connection pin 1087 is fixedly connected to the top plate of the connecting bracket. The sealing plate telescopic cylinder 1086 is rotatably connected to the second guide plate connecting block 1083 through the pin, the discharge port guide plate is connected to the first guide plate connecting block 1084, and the first guide plate connecting block 1084 is rotatably connected to the outer side of the box body of the passivation liquid filtering and processing box 1 through the pin.

[0037] The waste crushing and drying treatment box 105 is arranged at the lower side of the discharge port of the passivation liquid filtering treatment box 1. It is mainly used to collect and crush the passivation liquid particles filtered by the waste crushing and drying treatment box 105, and collect them after drying for environmentally friendly and harmless treatment to prevent the waste discharge pipe from being blocked.

[0038] The waste crushing and drying treatment box 105 is rotatably connected to the arc cover 1052. The arc cover 1052 is opened or closed by the arc cover opening handle 1053. The contact part between the arc cover 1052 and the box body is sealed with elastic rubber as the arc cover elastic rubber sealing device 10521, which is embedded in the arc cover 1052. A drying treatment box exhaust gas discharge connection port 1051 is designed on the top of the arc cover 1052 to facilitate the collection of exhaust gas.

[0039] An inclined collecting guide plate 1055 is fixedly connected to the middle and lower part of the waste crushing and drying treatment box 105, and the collected passivation liquid particles are introduced into the particle crushing device 1057 driven by the crushing drive motor 1056. The crushed powder waste 10593 falls into the waste transport cart 1059 below through the waste discharge port 1058, and then is dried by the electric heating dryer 10592 and transported out through the waste cart transport door 10591, and then packaged and sent to an environmental protection treatment plant for harmless treatment.

[0040] The passivation liquid filtration treatment box 1 and the passivation liquid second filtration treatment box 3 can respectively process one or more different types of passivation liquids, and are mainly used to switch the passivation liquid used for surface post-treatment of the product, corresponding to the filtration of the passivation liquid in the passivation liquid circulation box 2 and the passivation liquid second circulation box 4, respectively, and can also be connected to one or more roller coaters to process passivation liquid particles.

[0041] The passivation liquid circulation box 2 mainly plays the role of circulating the passivation liquid, and continuously filters the passivation liquid through the passivation liquid filtering and processing box 1, so that the passivation liquid circulation system is always in a clean state, ensuring that the product quality meets the performance requirements. After the passivation liquid in the passivation liquid circulation box 2 is discharged through the passivation liquid discharge port 20841, it is transported to the roller coater 5 through the passivation liquid outlet solenoid valve 2083, the passivation liquid delivery pipeline 2084, and the passivation liquid delivery pipeline inlet solenoid valve 2085 through the delivery pump, and then through the opened passivation liquid delivery pipeline outlet solenoid valve 2087, the liquid adding pipeline rotary joint 504, and the rotating liquid adding pipeline 505, and then through the liquid adding flow regulator 502 to add liquid to the roller coater 5 for production and use. Before supplying liquid to the roller coater 5, the backwash solenoid valve 1044 needs to be closed to prevent the deionized water in the backwash water inlet pipe 1045 from entering the passivation liquid filtration treatment box 1 and the passivation liquid circulation box 2. The liquid flow cut-off solenoid valve 1043 can control two working modes. The first is to stop the operation of the passivation liquid filtration treatment box 1 during the process of adding liquid to the roller coater, and only add liquid to the roller coater 5. The second is to process the filtration of the passivation liquid circulation box 2 or the roller coater 5 while adding liquid to the roller coater 5.

[0042] The detection device electrical control box 204 installed on the top of the passivation liquid circulation box 2 is connected to the temperature and liquid level detection device 203, and extends to the inside of the box through the top of the box. The temperature and liquid level detection device 203 contains temperature and liquid level detection sensors to detect the temperature and liquid level in the passivation liquid circulation box 2 in real time.

[0043] When backwashing the passivation liquid filter treatment box 1, the backwash deionized water is flushed through the backwash water inlet pipe 1045 to reach the passivation liquid filter treatment box 1. First, the liquid shut-off solenoid valve 1043 must be opened, and the material tray discharge port solenoid valve 5012, the passivation liquid delivery pipeline inlet solenoid valve 2085, the overflow port solenoid valve 2081, and the passivation liquid outlet solenoid valve 2083 must be closed. The deionized water passes through the filter hose 104, the liquid main line 1041, and the liquid distribution pipe 1042 and finally reaches the filter screen 106 for cleaning.

[0044] When the passivation liquid circulation box 2 is backwashed, the backwash desalted water passes through the backwash water inlet pipe 1045 to reach the passivation liquid circulation box 2 for cleaning. First, the liquid flow cut-off solenoid valve 1043, the material tray drain port solenoid valve 5012, the passivation liquid delivery pipeline inlet solenoid valve 2085, and the material tray drain port solenoid valve 2083 must be closed. The desalted water passes through the passivation liquid delivery pipeline 2084 and the passivation liquid overflow pipeline 208 to reach the passivation liquid circulation box 2 for cleaning.

[0045] When the roller coater 5 is backwashed, the backwash desalted water passes through the backwash water inlet pipe 1045 to reach the roller coater 5 for cleaning. First, the backwash solenoid valve 1044 and the material tray drain port solenoid valve 5012 must be opened, and the flow cut-off solenoid valve 1043, the passivation liquid delivery pipeline inlet solenoid valve 2085, the material tray drain port solenoid valve 2083, and the overflow port solenoid valve 2081 must be closed. The desalted water passes through the coating machine material tray drain port 5011 with a filter screen to reach the roller coater 5 for cleaning.

[0046] The backwashing desalted water can also backwash the second passivation liquid filtration treatment box 3 and the second passivation liquid circulation box 4 in the same way, which is controlled by opening or closing the corresponding pipeline solenoid valves.

[0047] Before pouring out the passivation liquid residue in the passivation liquid circulation box 2, first close the liquid shut-off solenoid valve 1043 to stop supplying liquid to the passivation liquid circulation box 2, stop the circulation box return line delivery pump 206 to circulate, close the drying treatment box exhaust gas discharge connection port 1051 on the upper cover of the waste crushing and drying treatment box 105 to prevent interference, retract the sealing plate telescopic cylinder 1086, drive the sealing discharge port guide plate 10841 to rotate and open, the cylinder of the pneumatic lifting and vibration device 103 retracts, and the filter screen 106 rotates with the pin shaft of the filter screen lifting and connecting plate 1061 as the midpoint, and the particulate matter accumulated in the particulate matter storage chamber 1066 is poured from the particulate matter discharge port 1067 into the waste crushing and drying treatment box 105 for crushing and drying.

[0048] refer to Fig.12 It is a schematic diagram of the waste gas treatment structure of a continuous hot-dip galvanizing passivation liquid environmentally friendly recycling device. The waste gas treatment of the continuous hot-dip galvanizing passivation liquid environmentally friendly recycling device is mainly composed of four parts to complete the centralized treatment and discharge of the waste gas emitted from each box.

[0049] The first part is to set an exhaust gas collection hood 503 above the roller coater 5 to complete the collection of the roller coater exhaust gas, and then after pre-treatment by the exhaust gas scrubber 5031, it is sent to the exhaust gas washing treatment device 6 through the roller coater exhaust gas collection pipeline 602 to complete the exhaust gas treatment of the roller coater 5. The second part is that the exhaust gas from the exhaust gas outlet arranged at the top of the passivation liquid circulation box 2 and the second passivation liquid circulation box 4 passes through the passivation liquid circulation box exhaust gas pipeline 603, merges into the environmental protection treatment box exhaust gas collection main pipeline 209 and is finally transported to the exhaust gas washing treatment device 6. The third part is that the exhaust gas from the exhaust gas outlet arranged at the top of the passivation liquid filtering treatment box 1 and the second passivation liquid filtering treatment box 3, as well as the exhaust gas generated by the waste crushing and drying treatment box 105, is merged into the environmental protection treatment box exhaust gas collection main pipeline 209 through the metal hose 2091 connected to the waste crushing and drying treatment box exhaust gas discharge connection port 1051. The exhaust gas collected by the environmental protection treatment box branch pipe 2010 is also transported to the exhaust gas collection main pipe 209 of the environmental protection treatment box to the exhaust gas washing treatment device 6. The fourth part is that the exhaust gas in the exhaust gas washing treatment device 6 is discharged to the atmosphere through the qualified exhaust gas discharge pipe 601 connected to the exhaust gas washing treatment device 6 after being tested and qualified.

[0050] Through the above technical scheme, after the passivation liquid to be processed and recovered is filtered, the solid residues intercepted on the filter object can be automatically and fully cleaned and collected uniformly, with a high degree of automation and strong practicality.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device, characterized in that: It comprises a passivation liquid filtering treatment box (1), a passivation liquid circulation box (2), a second passivation liquid filtering treatment box (3), a second passivation liquid circulation box (4), a roller coating machine (5) and an exhaust gas washing treatment device (6); the passivation liquid filtering treatment box (1) and the second passivation liquid filtering treatment box (3) have the same structure and are arranged in a coplanar mirror image, and the passivation liquid circulation box (2) and the second passivation liquid circulation box (4) have the same structure and are arranged in a coplanar manner; The passivation liquid filtering treatment box (1) comprises an environmental protection treatment box (101), wherein the top of the environmental protection treatment box (101) is provided with an exhaust gas discharge port (102), and one side of the bottom is provided with a circulation box liquid inlet (207), and the circulation box liquid inlet (207) is connected to the inlet of a circulation box return liquid pipeline delivery pump (206) provided at the top of the environmental protection treatment box (101) through a pipeline; an inclined guide plate (107) inclined upward is provided at the bottom of the circulation box liquid inlet (207) in the environmental protection treatment box (101), and a heating plate (1071) is provided at the bottom of the inclined guide plate (107); a filter screen (106) is provided above the inclined guide plate (107) in the environmental protection treatment box (101) The high end of the filter screen (106) is a particle discharge port (1067), and is connected to the inner wall of the environmental protection treatment box (101) via the filter screen support block (1062) and the filter screen rotating support block (1068). The bottom of the filter screen rotating support block (1068) is provided with a filter screen discharge port support block (1085) connected to the inner wall of the environmental protection treatment box (101). The other end of the filter screen (106) is connected to the inner wall of the environmental protection treatment box (101) through a filter screen positioning device; a liquid flow main line (1041) is provided above the filter screen (106), and one end of the liquid flow main line (1041) is provided with a pipe opening facing the surface of the filter screen (106) The other end of the main liquid flow path (1041) is connected to the outer wall of the top of the environmental protection treatment box (101) through the filter screen lifting connection plate (1061) and the pneumatic lifting and vibration device (103); the middle of the main liquid flow path (1041) is connected to the passivation liquid circulation box (2) through the filter hose (104); the outer bottom of the environmental protection treatment box (101) is provided with a waste crushing and drying treatment box (105); the top opening of the waste crushing and drying treatment box (105) is provided with an arc cover (1052) and a material receiving guide plate (1054); the top of the arc cover (1052) is provided with a waste gas discharge connection port of the drying treatment box (1051); the environmental protection treatment box (101) is provided with a sealed discharge port guide plate (10841) outside and connected to the discharge port of the filter screen (106); the top of the sealed discharge port guide plate (10841) is connected to the outer wall of the environmental protection treatment box (101) through a first guide plate connecting block (1084); the bottom of the sealed discharge port guide plate (10841) is connected to the outer wall of the environmental protection treatment box (101) through a second guide plate connecting block (1083); a connecting bracket is provided on the top of the side of the environmental protection treatment box (101) close to the discharge port of the filter screen (106); a sealing plate telescopic cylinder (1086) is provided between the connecting bracket and the second guide plate connecting block (1083); The passivation liquid circulation box (2) comprises a passivation liquid circulation box body (201), and the top of the passivation liquid circulation box body (201) is provided with a passivation liquid circulation box exhaust gas discharge connection port (202) and a temperature and liquid level detection device (203); the passivation liquid circulation box body (201) is connected to the outlet of the circulation box return liquid pipeline delivery pump (206) through a pipeline via a circulation box return liquid pipeline (205) inserted into the top of the passivation liquid circulation box body (201); a passivation liquid overflow port (2082) is provided at the top of one side of the passivation liquid circulation box body (201), and a passivation liquid discharge port (20841) is provided at the bottom; the passivation liquid overflow port (2082) is respectively connected to the passivation liquid discharge port (20841) and the passivation liquid delivery pipeline (2084) through the passivation liquid overflow pipeline (208), and the passivation liquid delivery pipeline (2084) is connected to the filter hose (104); The roller coater (5) comprises a roller coater material tray (501), a roller coater roller system is arranged above the roller coater material tray (501), a liquid discharge port (5011) with a filter is arranged at the bottom of the roller coater material tray (501), and a material tray liquid discharge port electromagnetic valve (5012) is arranged on the pipeline of the liquid discharge port (5011) with the filter; a liquid addition flow regulator (502) is arranged directly above the roller coater roller system, an exhaust gas collection cover (503) is arranged above the liquid addition flow regulator (502), and an exhaust gas scrubber (5012) is arranged on the top of the exhaust gas collection cover (503). 31); the liquid adding flow rate regulator (502) is connected to the passivation liquid outlet of the second circulation box (4) and the passivation liquid delivery pipeline (2084) through a rotating liquid adding pipeline (505) through pipelines, and the passivation liquid delivery pipeline (2084) is provided with a passivation liquid delivery pipeline inlet solenoid valve (2085), a passivation liquid delivery pump (2086) and a passivation liquid delivery pipeline outlet solenoid valve (2087) in sequence, and the passivation liquid second circulation box (4) is provided with a second circulation box solenoid valve (2088); The waste gas washing treatment device (6) is connected to the waste gas scrubber (5031) via the roller coating machine waste gas collection pipeline (602); the waste gas washing treatment device (6) is provided with a qualified waste gas discharge pipe (601) at the top, and is connected to the waste material crushing and drying treatment box waste gas discharge connection port (1051) at the bottom in sequence via the environmental protection treatment box waste gas collection main pipeline (209) and the metal hose (2091); the environmental protection treatment box waste gas collection main pipeline (209) is also provided with a passivation liquid circulation box waste gas pipeline (603) and an environmental protection treatment box waste gas collection branch pipeline (2010); the passivation liquid circulation box waste gas pipeline (603) is connected to the two passivation liquid circulation box waste gas discharge connection ports, and the environmental protection treatment box waste gas collection branch pipeline (2010) is respectively connected to the two environmental protection treatment box waste gas discharge ports.

2. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in claim 1, characterized in that: The waste crushing and drying treatment box (105) is provided with an inverted eight-shaped collecting guide plate (1055) inside, the collecting guide plate (1055) is connected to the feeding port of the particle crushing device (1057), the particle crushing device (1057) is driven to operate by a crushing drive motor (1056), and the bottom of the particle crushing device (1057) is a waste discharge port (1058); a waste transport trolley (1059) is provided below the particle crushing device (1057) in the waste crushing and drying treatment box (105), the waste transport trolley (1059) is used to receive powdered waste (10593) and has an electric heating dryer (10592) at the bottom, and a waste trolley transport door (10591) is provided on one side of the bottom of the waste crushing and drying treatment box (105) opposite to the waste transport trolley (1059).

3. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in claim 2, characterized in that: The filter screen (106) comprises a triangular edge guide plate (1065) and an arc-shaped material guide plate (1063); a particle storage cavity (1066) is provided on the triangular edge guide plate (1065); and a plurality of groups of filter mesh holes (1064) are equidistantly arranged at the end of the arc-shaped material guide plate (1063).

4. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in claim 3, characterized in that: The filter hose (104) is provided with a liquid flow cut-off solenoid valve (1043); a backwashing water inlet pipeline (1045) is also provided on one side of the filter hose (104), and a backwashing solenoid valve (1044) is provided on the backwashing water inlet pipeline (1045).

5. The environmentally friendly recycling device for continuous hot-dip galvanizing passivation solution according to claim 4, characterized in that: The filter screen positioning device comprises a positioning buffer block (108) connected to the inner wall of the environmental protection treatment box (101), a limiting block (1082) is provided on the inner wall of the environmental protection treatment box (101) below the positioning buffer block (108), and a buffer spring (1081) is provided between the positioning buffer block (108) and the limiting block (1082).

6. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in claim 5, characterized in that: One end of the arc-shaped cover (1052) is connected to the waste crushing and drying treatment box (105) through the arc-shaped cover opening handle (1053), and the other end is connected to the free end of the material receiving guide plate (1054) through the arc-shaped cover elastic rubber sealing device (10521).

7. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in claim 6, characterized in that: The rotary liquid adding pipeline (505) is connected to a pipeline leading to the passivation liquid outlet of the second passivation liquid circulation box (4) and the passivation liquid delivery pipeline (2084) via a liquid adding pipeline rotary joint (504).

8. The environmentally friendly recycling device for continuous hot-dip galvanizing passivation solution according to claim 7, characterized in that: The temperature and liquid level detection device (203) is controlled and powered by a detection device electric control box (204) on the top thereof.

9. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device as claimed in any one of claims 1 to 8, characterized in that: The connecting bracket is connected to the fixed end of the sealing plate telescopic cylinder (1086) via a rotating connecting pin (1087) of the telescopic cylinder.

10. A continuous hot-dip galvanizing passivation solution environmentally friendly recycling device according to any one of claims 1 to 8, characterized in that: The passivation liquid overflow port (2082) is provided with an overflow port electromagnetic valve (2081), and the passivation liquid discharge port (20841) is provided with a passivation liquid outlet electromagnetic valve (2083).

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