A bubbling iron removal device for recycling waste acid from hot-dip galvanizing

Abstract

The utility model discloses a bubbling type iron removal device for recycling waste acid from hot-dip galvanizing. The lifting mechanism also includes a sealing cover, an air inlet pipe is fixedly installed at one end of the inner wall of the sealing cover, the upper end and the lower end of the air inlet pipe both pass through the sealing cover, and a rotating sleeve is sleeved on the outer wall of the lower end of the air inlet pipe, and the top of the rotating sleeve is rotatably connected to the inner wall of the sealing cover, and a gear ring is fixedly connected to the upper end of the outer wall of the rotating sleeve, and a gear is rotatably connected to the outer wall of the sealing cover near the rotating sleeve, a hand wheel is fixedly connected to the middle of the top of the gear, one side of the hand wheel passes through the sealing cover and is meshed with the side edge of the gear ring, the bottom end of the air inlet pipe passes through the bottom of the rotating sleeve, and air outlets are opened around the bottom side of the air inlet pipe, a hook is arranged on the top of the sealing cover to facilitate lifting and separation from a reaction container, and the internal structure of the reaction container is simple and convenient for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of hazardous wastes, in particular to a bubbling iron removal device for recovering valuable metals from hot-dip galvanizing waste acid. Background Art

[0002] The oxidation of ferrous ions requires harsh reaction conditions, and generally the reaction is difficult to be carried out thoroughly. The bubbling type iron removal device can effectively solve this problem. The principle of the bubbling type iron removal device is to use the large specific surface area of ​​microbubbles to enhance the oxidation ability of the air and its strong hydraulic stirring effect to quickly oxidize the ferrous ions in the waste acid, and then remove the iron ions through other chemical methods to achieve separation. Usually, the device pumps gas (such as air or oxygen) into the waste acid from the bottom to form a large number of microbubbles. The oxygen in these bubbles reacts with the ferrous ions in the waste acid to oxidize the ferrous ions into iron ions. At the same time, a large number of microbubbles can increase the contact area of ​​the gas-liquid reaction and form strong hydraulic stirring to accelerate the oxidation reaction. After the oxidation is completed, the pH of the system is adjusted. ， According to the different activities of metal ions, iron ions are converted into iron hydroxide colloidal precipitation, and then the iron mud is separated by filter pressing, thereby achieving efficient oxidation and separation and recovery of iron ions in waste acid.

[0003] In the prior art, aeration-type iron removal devices generally use pressurized equipment and are internally equipped with a stirring mechanism and various pipelines, and the structure is relatively complex. This will lead to problems such as difficulty in device operation, high cost, high maintenance cost, and difficulty in cleaning. Therefore, a bubbling-type iron removal device for hot-dip galvanizing waste acid recovery is proposed to solve the above problems. Utility Model Content

[0004] The technical problems to be solved by the utility model are as follows: an aerated iron removal device generally adopts pressurized equipment and is internally equipped with a stirring mechanism and various pipelines, and has a relatively complex structure. This will lead to problems such as difficulty in operating the device, high cost, high maintenance cost, and difficulty in cleaning. Therefore, a bubbling iron removal device for recovering hot-dip galvanizing waste acid is proposed to solve the above problems.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A bubbling iron removal device for hot-dip galvanizing waste acid recovery, comprising a recovery device, a lifting mechanism is arranged above the recovery device, and the lifting mechanism comprises a motor;

[0007] Also includes:

[0008] Wherein, the lifting mechanism further comprises a sealing cover, an air inlet pipe is fixedly mounted on one end of the inner wall of the sealing cover, the upper and lower ends of the air inlet pipe both pass through the sealing cover, and a rotating sleeve is sleeved on the outer wall of the lower end of the air inlet pipe, and the top of the rotating sleeve is rotatably connected to the inner wall of the sealing cover, and a gear ring is fixedly connected to the upper end of the outer wall of the rotating sleeve;

[0009] Wherein, a gear is rotatably connected to the outer wall of the sealing cover near the rotating sleeve, a hand wheel is fixedly connected to the middle of the top of the gear, and one side of the hand wheel penetrates the sealing cover and meshes with the side edge of the gear ring;

[0010] The bottom end of the air inlet pipe passes through the bottom of the rotating sleeve, and air outlets are provided around the bottom side of the air inlet pipe.

[0011] As a further solution of the utility model: the outer wall of the lower end of the rotating sleeve is fixedly connected with an external thread, the outer thread sleeve of the external thread is provided with a connecting sleeve, one side of the outer wall of the connecting sleeve is fixedly connected with a limiting block, and the bottom of the connecting sleeve is fixedly installed with an air pipe.

[0012] As a further solution of the utility model: the air supply pipe is annular as a whole, and a plurality of air outlet pipes are connected to the top of the air supply pipe. The air outlet pipes are arranged equidistantly, and the top inner wall of each air outlet pipe is rotatably connected to a valve plate, and the inner wall of the air outlet pipe and the lower end of one side of the valve plate are provided with a protrusion, and the bottom surface of the valve plate is in active contact with the protrusion on the inner wall of the air outlet pipe.

[0013] As a further solution of the utility model: the middle of the top of the sealing cover is fixedly installed with a hook, the output shaft of the hook passes through the sealing cover downward and is fixedly connected to a rotating rod, the bottom of the rotating rod is fixedly connected to a stirring blade, and the top of the sealing cover and one end close to the motor is connected with a liquid inlet pipe.

[0014] As a further solution of the utility model: the top of the sealing cover and both sides of the motor are fixedly connected with hooks, and the top side of the sealing cover is penetrated and connected with a plurality of bolts.

[0015] As a further solution of the utility model: the recovery equipment includes a reaction container, support legs are fixedly installed on both sides of the bottom of the reaction container, a discharge pipe is fixedly connected to the middle of the bottom of the reaction container, a sealing gasket is fixedly connected to the bottom of the inner wall of the reaction container, a limiting groove is opened on one side of the inner wall of the reaction container, and the length direction of the limiting groove is consistent with the overall length direction of the reaction container, and a plurality of internal thread grooves are opened on the top side of the reaction container.

[0016] As a further solution of the utility model: the top of the reaction container is movably connected to the sealing cover, the inner wall of the internal thread groove is threadedly connected to the bolt, the inner wall of the limit groove is slidably connected to the limit block, and the top of the sealing gasket is movably contacted with the bottom surface of the gas pipe.

[0017] Beneficial effects of the utility model:

[0018] The utility model is designed to operate at normal pressure in the reaction container, and a sealing cover is arranged on the top to ensure that oxygen can effectively react with ferrous ions in the waste acid during the reaction process. At the same time, the interior of the sealing cover includes a stirring blade and pipeline structures such as an air inlet pipe and a liquid inlet pipe. A hook is arranged on the top of the sealing cover for easy lifting and separation from the reaction container. The internal structure of the reaction container is simple, and cleaning and maintenance are simple and cost-effective.

[0019] The top of the gas pipe in the device is fixed under the rotating sleeve through a connecting sleeve. After lifting the sealing cover, the rotating sleeve is driven to rotate by rotating the handwheel above the sealing cover. The external thread at the lower end of the rotating sleeve can push the connecting sleeve to fall and separate from itself, making it convenient to disassemble the gas pipe as a whole for separate maintenance and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall internal structure of the reaction container of the utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of region A;

[0023] Figure 3 This is a schematic diagram of the structure of the reaction container in the utility model from a top view;

[0024] Figure 4 It is a schematic diagram of the internal structure of the connecting sleeve in the utility model;

[0025] Figure 5 It is a schematic diagram of the internal structure of the air outlet pipe in the utility model.

[0026] In the figure: 1. recovery equipment; 101. reaction container; 102. support leg; 103. drain pipe; 104. sealing gasket; 105. limit groove; 106. internal thread groove; 2. lifting mechanism; 201. sealing cover; 202. bolt; 203. hook; 204. liquid inlet pipe; 205. motor; 206. rotating rod; 207. stirring blade; 208. air inlet pipe; 209. rotating sleeve; 210. gear ring; 211. gear; 212. hand wheel; 213. external thread; 214. connecting sleeve; 215. limit block; 216. air outlet; 217. air supply pipe; 218. air outlet pipe; 219. valve plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-5 As shown, a bubbling iron removal device for hot-dip galvanizing waste acid recovery includes a recovery device 1, a lifting mechanism 2 is arranged above the recovery device 1, and the lifting mechanism 2 includes a motor 205; wherein the lifting mechanism 2 also includes a sealing cover 201, an air inlet pipe 208 is fixedly installed at one end of the inner wall of the sealing cover 201, and the upper and lower ends of the air inlet pipe 208 both pass through the sealing cover 201, and the outer wall of the lower end of the air inlet pipe 208 is sleeved with a rotating sleeve 209, and the top of the rotating sleeve 209 is in contact with the sealing cover 201. 1 is rotatably connected to the inner wall of the rotating sleeve 209, and a gear ring 210 is fixedly connected to the upper end of the outer wall of the rotating sleeve 209; wherein, a gear 211 is rotatably connected to the outer wall of the sealing cover 201 near the rotating sleeve 209, and a hand wheel 212 is fixedly connected to the top middle of the gear 211, and one side of the hand wheel 212 penetrates the sealing cover 201 and meshes with the side of the gear ring 210; wherein, the bottom end of the air inlet pipe 208 passes through the bottom of the rotating sleeve 209, and air outlets 216 are opened around the bottom side of the air inlet pipe 208, such as Figure 4 As shown, the gas inside the air inlet pipe 208 is discharged through the air outlet 216;

[0029] The outer wall of the lower end of the rotating sleeve 209 is fixedly connected with an external thread 213, and the outer thread sleeve of the external thread 213 is provided with a connecting sleeve 214. One side of the outer wall of the connecting sleeve 214 is fixedly connected with a limiting block 215. The bottom of the connecting sleeve 214 is fixedly installed with an air supply pipe 217. The air supply pipe 217 is annular as a whole. The top of the air supply pipe 217 is connected with a plurality of air outlet pipes 218. The air outlet pipes 218 are arranged equidistantly. The inner wall of the top of each air outlet pipe 218 is rotatably connected with a valve plate 219, and the inner wall of the air outlet pipe 218 and the lower end of one side of the valve plate 219 are provided with a protrusion, and the bottom surface of the valve plate 219 is in active contact with the protrusion of the inner wall of the air outlet pipe 218, such as Figure 5 As shown, the inner wall protrusion of the air outlet pipe 218 limits the rotation of the valve plate 219 to prevent the valve plate 219 from being pushed open by the liquid above;

[0030] The middle of the top of the sealing cover 201 is fixedly installed with the hook 203, the output shaft of the hook 203 passes through the sealing cover 201 downward and is fixedly connected to the rotating rod 206, the bottom of the rotating rod 206 is fixedly connected to the stirring blade 207, the top of the sealing cover 201 and one end close to the motor 205 is connected through the liquid inlet pipe 204, the top of the sealing cover 201 and both sides of the motor 205 are fixedly connected with the hook 203, and the top side of the sealing cover 201 is connected through a plurality of bolts 202, such as Figure 1 As shown, the motor 205 drives the rotating rod 206 and drives the stirring blade 207 to stir the reaction material to increase the reaction rate;

[0031] The recovery device 1 includes a reaction container 101, support legs 102 are fixedly installed on both sides of the bottom of the reaction container 101, a drain pipe 103 is fixedly connected to the middle of the bottom of the reaction container 101, a sealing gasket 104 is fixedly connected to the bottom of the inner wall of the reaction container 101, a limiting groove 105 is provided on one side of the inner wall of the reaction container 101, and the length direction of the limiting groove 105 is consistent with the overall length direction of the reaction container 101, a plurality of internal thread grooves 106 are provided on the top side of the reaction container 101, the top of the reaction container 101 is movably connected to the sealing cover 201, the inner wall of the internal thread groove 106 is threadedly connected to the bolt 202, the inner wall of the limiting groove 105 is slidably connected to the limiting block 215, and the top of the sealing gasket 104 is movably in contact with the bottom surface of the gas pipe 217, such as Figure 1 , Figure 4 As shown, the sealing gasket 104 blocks the opening of the bottom of the gas delivery pipe 217 that accommodates the air inlet pipe 208, thereby reducing gas leakage from the opening.

[0032] The working principle of this utility model:

[0033] When the device is in use, waste liquid or reactants are added to the liquid inlet pipe 204, and then gas is input into the air inlet pipe 208, the motor 205 is started, and the stirring blade 207 is driven by the rotating rod 206 to stir the reactants, and the gas enters the gas delivery pipe 217 from the gas outlet 216 at the bottom of the gas inlet pipe 208, and the gas pushes the valve plate 219 to flip open and deliver gas to the reaction container 101. After the reaction is completed, the product can be discharged from the liquid discharge pipe 103;

[0034] Secondly, when it is necessary to clean the inside of the reaction vessel 101, loosen the bolt 202, connect the lifting device to the hook 203, and lift the sealing cover 201 as a whole to separate it from the reaction vessel 101. During this period, the hand wheel 212 can be rotated to push the gear 210 and the rotating sleeve 209 inside it to rotate through the gear 211, so that the external thread 213 pushes the connecting sleeve 214, and the limit block 215 slides downward in the limit groove 105 until the connecting sleeve 214 is separated from the external thread 213 as a whole. At this time, the gas pipe 217 is completely disassembled.

[0035] Secondly, when you need to clean the inside of the reaction vessel

[0036] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A bubbling iron removal device for recovering hot-dip galvanizing waste acid, comprising a recovery device (1), a lifting mechanism (2) being arranged above the recovery device (1), and the lifting mechanism (2) comprising a motor (205); It is characterized in that Also includes: The lifting mechanism (2) further comprises a sealing cover (201), an air intake pipe (208) being fixedly mounted on one end of the inner wall of the sealing cover (201), the upper end and the lower end of the air intake pipe (208) both passing through the sealing cover (201), and a rotating sleeve (209) being sleeved on the outer wall of the lower end of the air intake pipe (208), and the top of the rotating sleeve (209) being rotatably connected to the inner wall of the sealing cover (201), and a gear ring (210) being fixedly connected to the upper end of the outer wall of the rotating sleeve (209); A gear (211) is rotatably connected to the outer wall of the sealing cover (201) near the rotating sleeve (209), a hand wheel (212) is fixedly connected to the middle of the top of the gear (211), and one side of the hand wheel (212) penetrates the sealing cover (201) and meshes with the side of the gear ring (210); The bottom end of the air inlet pipe (208) passes through the bottom of the rotating sleeve (209), and air outlets (216) are provided around the bottom side of the air inlet pipe (208).

2. A bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 1, characterized in that: An external thread (213) is fixedly connected to the outer wall of the lower end of the rotating sleeve (209), a connecting sleeve (214) is provided on the outer thread sleeve of the external thread (213), a limiting block (215) is fixedly connected to one side of the outer wall of the connecting sleeve (214), and an air delivery pipe (217) is fixedly installed on the bottom of the connecting sleeve (214).

3. A bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 2, characterized in that: The gas delivery pipe (217) is annular in shape as a whole, and a plurality of gas outlet pipes (218) are connected through the top of the gas delivery pipe (217). The gas outlet pipes (218) are arranged at equal distances, and a valve plate (219) is rotatably connected to the inner wall of the top of each gas outlet pipe (218). A protrusion is provided on the inner wall of the gas outlet pipe (218) and at the lower end of one side of the valve plate (219), and the bottom surface of the valve plate (219) is in active contact with the protrusion on the inner wall of the gas outlet pipe (218).

4. A bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 1, characterized in that: The middle of the top of the sealing cover (201) is fixedly mounted with a hook (203); an output shaft of the hook (203) passes downward through the sealing cover (201) and is fixedly connected to a rotating rod (206); a stirring blade (207) is fixedly connected to the bottom of the rotating rod (206); and a liquid inlet pipe (204) is connected through the top of the sealing cover (201) and at one end close to the motor (205).

5. The bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 1, characterized in that: The top of the sealing cover (201) and both sides of the motor (205) are fixedly connected with hooks (203), and the top side of the sealing cover (201) is penetrated and connected with a plurality of bolts (202).

6. A bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 1, characterized in that: The recovery device (1) comprises a reaction container (101), support legs (102) are fixedly installed on both sides of the bottom of the reaction container (101), a drain pipe (103) is fixedly connected to the middle of the bottom of the reaction container (101), a sealing gasket (104) is fixedly connected to the bottom of the inner wall of the reaction container (101), a limiting groove (105) is provided on one side of the inner wall of the reaction container (101), and the length direction of the limiting groove (105) is consistent with the overall length direction of the reaction container (101), and a plurality of internal thread grooves (106) are provided on the side of the top of the reaction container (101).

7. A bubbling iron removal device for hot-dip galvanizing waste acid recovery according to claim 6, characterized in that: The top of the reaction container (101) is movably connected to the sealing cover (201), the inner wall of the internal thread groove (106) is threadedly connected to the bolt (202), the inner wall of the limit groove (105) is slidably connected to the limit block (215), and the top of the sealing gasket (104) is movably in contact with the bottom surface of the gas transmission pipe (217).

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