Closed chromic acid mist collection and treatment device for chromium plating production line

Abstract

The utility model provides a closed type chromic acid mist collection treatment of chromeplate production line relates to the chromeplate field, include: electroplating bath and recovery box, the upper side of electroplating bath is provided with the fairing, and the upper end of fairing is connected with the gas collecting pipe, and the upper end of gas collecting pipe is connected with the suction pipe, the outer end of suction pipe is connected with the acid and alkali resistant draught fan, and the recovery box is connected with the acid and alkali resistant draught fan. The outer end of the acid and alkali resistant induced draft fan is connected with a recycling box through an air outlet pipe, the outer side of the recycling box is provided with cooling-water machine circulation equipment, the two ends of the recycling box are connected with guide covers, the box walls of the two sides of the recycling box are provided with an air inlet and an air outlet respectively, and meanwhile a condensation pipe is arranged in the recycling box; a water inlet pipe and a water return pipe are connected to the outer side of the cooling-water machine circulation equipment and connected with the two ends of the condensation pipe. The chromic acid mist filtering device has the function of conveniently condensing and recycling chromic acid mist, and the effect of conveniently disassembling, assembling and replacing the filtering assembly is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chromium plating technical field, concretely relates to a closed type chrome acid mist collection and treatment of chromium plating production line. BACKGROUND

[0002] Chromium plating refers to the behavior of plating chromium as a coating on other metals, and the chromium plating layer has very high hardness. Depending on the composition of the plating solution and the process conditions, the chromium plating layer has good heat resistance. When heated below 500°C, its gloss and hardness do not change significantly. When the temperature is greater than 500°C, it begins to oxidize and discolor. When the temperature is greater than 700°C, the hardness begins to decrease. The friction coefficient of the chromium plating layer is small, especially the dry friction coefficient, which is the lowest among all metals. Therefore, the chromium plating layer has good wear resistance. The chromium plating layer has good chemical stability and does not react in alkali, sulfide, nitric acid, and most organic acids, but can dissolve in hydrochloric acid and hot sulfuric acid. Chromium acid mist waste gas is generated during the process of electroplating chromium.

[0003] After searching, the prior art (publication number: CN216171358U) records "a chromium acid mist collection and treatment device for chromium plating production line, comprising an electroplating tank, the top front and rear of the electroplating tank are fixedly connected with plastic plates, the top ends of the plastic plates are fixedly connected with the bottom ends of the left and right sides of the top plate respectively, the top ends of the top plate are uniformly fixedly connected with one end of a plurality of first branch pipes, the other end of the first branch pipe is fixedly connected with the bottom end of the main pipeline. In the utility model, the acid gas is transmitted into the main pipeline through the first branch pipe and the second branch pipe for subsequent treatment, the chromium acid mist waste gas collection effect is good, the effect of less unorganized emission, the working environment of the operator is greatly improved, the threaded sleeve can be conveniently detached and assembled between the adapter pipe and the slit type exhaust hood, during the assembly process, the sealing rubber ring is tightly attached to the inner wall of the slit type exhaust hood by tightening the threaded sleeve, thereby improving the sealing performance during acid gas collection."

[0004] Although the chromium acid mist collection and treatment device for chromium plating production line in the prior art achieves the treatment of acid mist, it still has some deficiencies: the existing chromium acid mist collection and treatment device for chromium plating production line lacks recycling effect of chromium acid mist. After the acid mist waste gas is cooled into liquid, it can be returned to the electroplating tank for reuse. However, the existing chromium acid mist recycling adopts direct filtration through a filter screen, which relies on the concentration of the acid mist itself to achieve recycling, resulting in low recycling efficiency and waste of chromium acid mist. In addition, the adsorption treatment components inside the acid mist processor are not convenient to disassemble and replace. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, a closed type chromium acid mist collection and treatment device for chromium plating production line is provided to solve the problems raised in the background art.

[0006] In order to achieve the above object, a closed type chromium acid mist collecting and processing of chromium plating production line is provided, comprising: an electroplating tank and a recovery tank, the upper side of the electroplating tank is provided with a flow guide cover, the upper end of the flow guide cover is connected with a gas collecting pipe, the upper end of the gas collecting pipe is connected with a suction pipe, the outer end of the suction pipe is connected with an acid and alkali resistant induced draft fan, the outer end of the acid and alkali resistant induced draft fan is connected with the recovery tank through an air outlet pipe, the outer side of the recovery tank is provided with a cold water machine circulating device, both ends of the recovery tank are connected with guide covers, the tank walls on both sides of the recovery tank are respectively provided with air inlet holes and air outlet holes, a condenser pipe is arranged in the recovery tank, the outer side of the cold water machine circulating device is connected with a water inlet pipe and a water return pipe, the water inlet pipe and the water return pipe are connected with both ends of the condenser pipe, a filter screen plate is arranged on the lower side of the condenser pipe, a liquid collecting tank is arranged on the lower side of the filter screen plate, the recovery tank is connected with a lye spraying tower through a pipeline, the lye spraying tower is connected with a filter tower through a pipeline, a filter assembly is inserted into the filter tower, and an activated carbon screen plate is arranged in the filter assembly.

[0007] Further, the flow guide cover is in a closed structure, is fixed to the upper end of the electroplating tank, and the upper end of the flow guide cover is connected with the gas collecting pipe through a plurality of short pipes.

[0008] Further, the recovery tank is internally provided with a liquid distribution pipe, and the liquid distribution pipe is connected with the water inlet pipe.

[0009] Further, the condenser pipe is in a curved pipe structure, the lower end of the condenser pipe is connected with a liquid collecting pipe, and the liquid collecting pipe is arranged on the upper side of the filter screen plate.

[0010] Further, the lower end of the liquid collecting tank is connected with a corrosion-resistant pump through a pipeline, an electromagnetic valve is arranged in the pipeline, and the liquid outlet end of the corrosion-resistant pump is connected to the electroplating tank through a pipeline.

[0011] Further, the upper end of the lye spraying tower is connected to the outer wall of the filter tower close to the bottom through a connecting pipe, a gas guide pipe is arranged in the filter tower, the outer end of the gas guide pipe is connected with the connecting pipe, and the pipe wall of the gas guide pipe is provided with gas distribution holes.

[0012] Further, the filter assembly is arranged in three groups in the filter tower, and the filter assembly is arranged on the upper side of the gas guide pipe.

[0013] Further, the filter assembly comprises an end plate, one end of the end plate is connected with a plug-in frame, the other end of the end plate is connected with a handle, a ventilation hole is arranged in the plug-in frame, a placement step is arranged on the inner hole wall of the ventilation hole, and the activated carbon screen plate is arranged on the placement step.

[0014] The beneficial effects of the present application are as follows:

[0015] 1, the acid and alkali resistance induced draft fan and the air outlet pipe, the chromium acid mist generated in the electroplating tank is guided to the recovery box, then through the guide cover and the air inlet hole, the diffusion of the chromium acid mist is realized, the chromium acid mist is dispersed into the recovery box, then through the circulating equipment of the cold water machine, the water inlet pipe and the water return pipe, the liquid distribution pipe and the liquid collecting pipe, the cooling water is guided to the condensing pipe, the part of the chromium acid mist passing through the outer wall of the condensing pipe is quickly cooled and condensed into liquid, then flows downward to the filter screen plate into the liquid collecting tank, when a certain amount is stored, the electromagnetic valve is opened and the corrosion resistant pump is started to transport the chromium acid liquid to the electroplating tank, and then recycling is realized;

[0016] 2, the alkali spray tower is used to first spray and neutralize the chromium acid mist without condensation, then enters the filter tower, at this time, the diffusion of the chromium acid mist is realized through the air guide pipe and the air diffuser, so that the chromium acid mist is in large area contact with the filter assembly, then the active carbon mesh plate included in the filter assembly is used for adsorbing and filtering the chromium acid mist again, the end plate, the handle and the plug-in frame are used, so that the active carbon mesh plate taken out from the placement step inside is convenient to take out, and the effect of convenient replacement is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the embodiment of the utility model.

[0018] Figure 2 It is the internal structure schematic view of the recovery box of the embodiment of the utility model.

[0019] Figure 3 It is the side view structure schematic view of the condensing pipe of the embodiment of the utility model.

[0020] Figure 4 It is the internal structure schematic view of the filter tower of the embodiment of the utility model.

[0021] Figure 5 It is the structure schematic view of the filter assembly of the embodiment of the utility model.

[0022] In the drawing: 1, electroplating tank; 11, flow guide cover; 12, gas collecting pipe; 13, suction pipe; 14, acid and alkali resistance induced draft fan; 15, air outlet pipe; 16, corrosion resistant pump; 2, recovery box; 21, liquid distribution pipe; 22, air inlet hole; 23, guide cover; 24, condensing pipe; 25, liquid collecting pipe; 26, filter screen plate; 27, liquid collecting tank; 28, air outlet hole; 3, circulating equipment of cold water machine; 31, water inlet pipe; 32, water return pipe; 4, alkali spray tower; 5, filter tower; 51, filter assembly; 511, end plate; 512, plug-in frame; 513, handle; 514, air vent; 515, placement step; 516, active carbon mesh plate; 52, air guide pipe; 521, air diffuser. DETAILED DESCRIPTION

[0023] Referring to Figures 1 to 5 The utility model provides a kind of closed type chromium acid mist collection and processing of chrome plating production line, comprising: electroplating tank 1 and recovery tank 2, the upper side of electroplating tank 1 is equipped with fairing 11, and the upper end of fairing 11 is connected with gas collector 12, and the upper end of gas collector 12 is connected with suction pipe 13, the outer end of suction pipe 13 is connected with acid and alkali resistant induced draft fan 14, and the outer end of acid and alkali resistant induced draft fan 14 is connected with recovery tank 2 by gas outlet pipe 15, the outside of recovery tank 2 is equipped with water chiller circulating equipment 3, and the both ends of recovery tank 2 are connected with guide cover 23, and the both sides of recovery tank 2 are respectively provided with air inlet hole 22 and air outlet hole 28, while condenser pipe 24 is arranged in the inside of recovery tank 2, the outside of water chiller circulating equipment 3 is connected with water inlet pipe 31 and return water pipe 32, and the both ends of condenser pipe 24 are connected with water inlet pipe 31 and return water pipe 32, the lower side of condenser pipe 24 is equipped with filter screen 26, and the lower side of filter screen 26 is equipped with liquid collecting tank 27, recovery tank 2 outside is connected with lye spray tower 4 by pipeline, and lye spray tower 4 is connected with filter tower 5 by pipeline, filter assembly 51 is inserted in filter tower 5, and activated carbon screen plate 516 is installed in filter assembly 51.

[0024] In the embodiment, electroplating tank 1, recovery tank 2, water chiller circulating equipment 3, lye spray tower 4 and filter tower 5 constitute the main structure of the closed type chromium acid mist collection and processing of the chrome plating production line involved in the present application.

[0025] Among them, water chiller circulating equipment 3 and lye spray tower 4 adopt the device under the prior art, realize the cooling water circulation and the neutralization treatment effect to chromium acid mist.

[0026] Specifically, guide cover 23 is provided as a conical cover structure, to realize the diffusion of chromium acid mist on one side of recovery tank 2 and the concentrated flow guiding effect of chromium acid mist on the other side.

[0027] Specifically, liquid collecting tank 27 is provided as a bucket-shaped structure, and is fixed at the bottom of recovery tank 2, and a flow guiding space is arranged at the lower side of filter screen 26.

[0028] As shown in Figure 1 , Figure 2 and Figure 3 , fairing 11 is provided as a closed structure, and is fixed at the upper end of electroplating tank 1, and the upper end of fairing 11 is connected with gas collector 12 through a plurality of short pipes, liquid distribution pipe 21 is arranged in the inside of recovery tank 2, and is connected with water inlet pipe 31, condenser pipe 24 is provided as a curved pipe structure, and the lower end of condenser pipe 24 is connected with liquid collecting pipe 25, and liquid collecting pipe 25 is arranged at the upper side of filter screen 26, the lower end of liquid collecting tank 27 is connected with corrosion-resistant pump 16 through pipeline, and an electromagnetic valve is arranged in the pipeline, and the liquid outlet end of corrosion-resistant pump 16 is connected with electroplating tank 1 through pipeline.

[0029] Specifically, the liquid distribution pipe 21 is connected with the lower groups of condensing pipes 24, and the liquid collecting pipe 25 realizes the recycling effect of the cooling water, and then the water pump of the water chiller circulating device 3 realizes the pressure driving of the cooling water.

[0030] As shown in Figure 1 , Figure 4 and Figure 5 , the upper end of the lye spray tower 4 is connected to the outer wall of the filter tower 5 near the bottom through a connecting pipe, and a gas guide pipe 52 is arranged in the inside of the filter tower 5, the outer end of the gas guide pipe 52 is connected with the connecting pipe, and the pipe wall of the gas guide pipe 52 is provided with gas distribution holes 521, three groups of filter assemblies 51 are arranged in the inside of the filter tower 5, and the filter assemblies 51 are located on the upper side of the gas guide pipe 52, the filter assembly 51 comprises an end plate 511, one end of the end plate 511 is connected with a plug-in frame 512, the other end of the end plate 511 is connected with a handle 513, the inside of the plug-in frame 512 is provided with a ventilation hole 514, and the inner hole wall of the ventilation hole 514 is provided with a placing step 515, and an activated carbon mesh plate 516 is arranged on the placing step 515.

[0031] Specifically, the outer wall of the filter tower 5 is provided with a through hole groove, and the inner wall of the filter tower 5 on the side corresponding to the through hole groove is provided with a positioning groove, so that the plug-in frame 512 can be inserted into the positioning groove through the through hole groove, and the horizontal installation of the filter tower 5 is realized, and the through hole groove is sealed by the end plate 511 after installation.

[0032] In use, the flow guide cover, gas collecting pipe, suction pipe, acid and alkali resistant induced draft fan and gas outlet pipe guide the chromium acid mist generated inside the electroplating tank to the recovery box, then diffuse the chromium acid mist through the guide cover and air inlet hole, so that it disperses into the recovery box, then the cooling water is guided into the condensing pipe through the water chiller circulating device, water inlet pipe and water return pipe, and the liquid distribution pipe and liquid collecting pipe, so that part of the chromium acid mist passing through the outer wall of the condensing pipe is quickly cooled and condensed into liquid, then flows downward to the filter screen plate and enters the liquid collecting tank, when a certain amount is stored, the electromagnetic valve is opened at this time to start the corrosion-resistant pump to transport the chromium acid liquid to the electroplating tank, thereby realizing recycling; the lye spray tower first sprays and neutralizes the chromium acid mist that has not been condensed, and then enters the filter tower, at this time the diffusion of the chromium acid mist is realized through the gas guide pipe and the gas distribution holes, so that it is in contact with the filter assembly in a large area, then the activated carbon mesh plate included in the filter assembly is used for further adsorption and filtration treatment of the chromium acid mist, the end plate, handle and plug-in frame are used to facilitate the removal of the activated carbon mesh plate from the inside of the placing step after extraction, thereby realizing the effect of easy replacement.

[0033] The chromium acid mist collecting and processing technology of the chromium plating production line is closed, and the chromium acid mist can be conveniently condensed and recovered, and the filter assembly can be conveniently disassembled and replaced.

Claims

1. A closed type chromium acid mist collection and treatment for a chrome plating production line, comprising: The electroplating tank (1) and the recovery tank (2) are characterized in that: the upper side of the electroplating tank (1) is provided with a flow guide cover (11), the upper end of the flow guide cover (11) is connected with a gas collecting pipe (12), the upper end of the gas collecting pipe (12) is connected with a suction pipe (13), the outer end of the suction pipe (13) is connected with an acid and alkali resistant induced draft fan (14), the outer end of the acid and alkali resistant induced draft fan (14) is connected with the recovery tank (2) through an air outlet pipe (15), the outer side of the recovery tank (2) is provided with a cold water machine circulating device (3), both ends of the recovery tank (2) are connected with guide covers (23), the side walls of the recovery tank (2) are respectively provided with air inlet holes (22) and air outlet holes (28), a condenser pipe (24) is arranged in the recovery tank (2), the outer side of the cold water machine circulating device (3) is connected with a water inlet pipe (31) and a water return pipe (32), the water inlet pipe (31) and the water return pipe (32) are connected with both ends of the condenser pipe (24), the lower side of the condenser pipe (24) is provided with a filter screen plate (26), the lower side of the filter screen plate (26) is provided with a liquid collecting tank (27), the outer side of the recovery tank (2) is connected with a lye spraying tower (4) through a pipeline, the lye spraying tower (4) is connected with a filter tower (5) through a pipeline, the filter tower (5) is inserted with a filter assembly (51), and the filter assembly (51) is internally provided with an activated carbon screen plate (516).

2. The closed type chromium acid mist collecting and treating system for chromium plating production line according to claim 1, wherein The flow guide cover (11) is in a closed structure, is fixed to the upper end of the electroplating tank (1), and the upper end of the flow guide cover (11) is connected with the gas collecting pipe (12) through a plurality of short pipes.

3. The closed type chromium acid mist collecting and treating system for chromium plating production line according to claim 1, characterized in that, The recovery tank (2) is internally provided with a liquid distribution pipe (21), and the liquid distribution pipe (21) is connected with the water inlet pipe (31).

4. The enclosed chromium acid mist collection and disposal system for a chrome plating line of claim 1 wherein, The condenser pipe (24) is in a curved pipe structure, the lower end of the condenser pipe (24) is connected with a liquid collecting pipe (25), and the liquid collecting pipe (25) is arranged on the upper side of the filter screen plate (26).

5. The enclosed chromium acid mist collection and disposal system for a chrome plating line of claim 1 wherein, The lower end of the liquid collecting tank (27) is connected with a corrosion-resistant pump (16) through a pipeline, an electromagnetic valve is arranged in the pipeline, and the liquid outlet end of the corrosion-resistant pump (16) is connected to the electroplating tank (1) through a pipeline.

6. The enclosed chromium acid mist collection and disposal system for a chrome plating line of claim 1 wherein, The upper end of the lye spraying tower (4) is connected to the outer wall near the bottom of the filter tower (5) through a connecting pipe, a gas guide pipe (52) is arranged in the filter tower (5), the outer end of the gas guide pipe (52) is connected with the connecting pipe, and the pipe wall of the gas guide pipe (52) is provided with gas distribution holes (521).

7. The enclosed chromium acid mist collection and disposal system for a chrome plating line of claim 1 wherein, The filter assembly (51) is arranged in three groups in the filter tower (5), and the filter assembly (51) is arranged on the upper side of the gas guide pipe (52).

8. The enclosed chromium acid mist collection and disposal system for a chrome plating line of claim 1 wherein, The filter assembly (51) comprises an end plate (511), one end of the end plate (511) is connected with a plug-in frame (512), the other end of the end plate (511) is connected with a handle (513), a ventilation hole (514) is arranged in the plug-in frame (512), a placement step (515) is arranged on the inner hole wall of the ventilation hole (514), and the activated carbon screen plate (516) is arranged on the placement step (515).

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