Pickling wastewater treatment equipment

Abstract

The utility model provides pickling wastewater treatment equipment, which relates to the technical field of stainless steel pickling wastewater treatment and comprises a treatment box provided with a liquid inlet channel and a liquid outlet channel. The device further comprises a non-contact liquid level sensor, an electronic prompting piece, a stirring assembly, an alkali liquor adding assembly, a flocculating agent adding assembly, a pH value detection assembly, a first limiting frame, a filtering assembly, a temporary storage assembly, a first telescopic cylinder, a circulation channel, a second limiting frame and a screening piece. According to the device, the filtering piece and the screening piece can be conveniently replaced on the basis of treating the acid wastewater, so that the stable treatment effect of the acid wastewater is ensured, and meanwhile, the pH value can be accurately obtained in the neutralization and heavy metal precipitation processes of the acid wastewater, so that heavy metal is completely precipitated; after the heavy metal precipitate is generated, a flocculating agent is added to promote the heavy metal precipitate to coagulate into large flocs, and finally the electromagnetic valve is opened to separate the heavy metal precipitate, namely effective solid-liquid separation.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pickling wastewater treatment technology, and more specifically, to a pickling wastewater treatment device. Background Technology

[0002] Stainless steel is a material with good corrosion resistance, and pickling is an indispensable part of the stainless steel production process. The pickling process generates a large amount of pickling wastewater containing heavy metals such as chromium and nickel every day. Pickling wastewater has a great impact on environmental pollution and human life, so wastewater treatment equipment is needed to treat it harmlessly.

[0003] Announcement No. CN218435452U proposes a pickling wastewater treatment device. This device can not only quickly separate solids and liquids with high separation efficiency, but also allows the separated solid and liquid emissions to be discharged separately. However, the screens and filters in the prior art are not easy to remove and replace, thus the treatment effect on acidic wastewater from stainless steel needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose an acid pickling wastewater treatment device.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A pickling wastewater treatment device includes a treatment tank with an inlet channel and an outlet channel. It also includes a non-contact level sensor, an electronic indicator, a stirring assembly, an alkali addition assembly, a flocculant addition assembly, a pH detection assembly, a first limiting frame, a filter assembly, a temporary storage assembly, a first telescopic cylinder, a flow channel, a second limiting frame, and a screening component.

[0007] The non-contact liquid level sensor, electronic indicator, stirring assembly, alkali addition assembly, flocculant addition assembly, and adjustable pH detection assembly are all installed on the treatment tank, and the non-contact liquid level sensor is electrically connected to the electronic indicator.

[0008] The first limiting frame is fixed inside the liquid inlet channel, and a filter assembly is placed on the first limiting frame;

[0009] The temporary storage components are fixed inside the processing box;

[0010] The first telescopic cylinder is symmetrically fixed on the processing box, and the first telescopic cylinder is connected to a flow channel located directly below the liquid outlet channel and whose dimensions are compatible with the end face of the liquid outlet channel.

[0011] The second limiting frame is fixed in the flow channel, and a screening component is placed on the second limiting frame. A collection box is set below the flow channel.

[0012] Furthermore, the electronic prompting device is either a voice prompt or a buzzer.

[0013] Furthermore, the stirring assembly includes a rotating roller, a gear transmission assembly, and a stirring rod.

[0014] The rotating rollers are rotatably connected to the processing tank and are symmetrically distributed about the liquid inlet channel;

[0015] The gear transmission assembly is fixed on the processing box and corresponds one-to-one with and is connected to the rotating rollers;

[0016] Several sets of stirring rods are symmetrically fixed on the rotating roller and located inside the processing box.

[0017] Furthermore, the alkali addition assembly includes a first metering pump and an alkali tank.

[0018] The first metering pump is fixed on the processing tank and its output end is connected to the inside of the processing tank.

[0019] The alkali tank is connected to the input of the first metering pump.

[0020] Furthermore, the flocculant addition assembly includes a second metering pump and a flocculant tank.

[0021] The second metering pump is fixed on the processing tank and its output end is connected to the inside of the processing tank.

[0022] The flocculant tank is connected to the input of the second metering pump.

[0023] Furthermore, the pH detection component includes a second telescopic cylinder and a pH sensor.

[0024] The second telescopic cylinder is fixed on the processing tank, and the telescopic cylinder passes through the processing tank and is connected to a pH sensor.

[0025] Furthermore, the filter assembly includes a filter plate and a handle.

[0026] The filter plate is placed on the first limiting frame and is in contact with the inner wall of the liquid inlet channel;

[0027] The handles are symmetrically fixed on the filter plate and are higher than the liquid inlet channel.

[0028] Furthermore, the temporary storage component includes a hopper and a solenoid valve.

[0029] The feeding hopper is fixed inside the processing box and is located below the rotating roller and spaced apart from it. A solenoid valve is installed on the discharge port of the feeding hopper.

[0030] Furthermore, the collection box has an opening that allows the flow channel to move up and down and is the same size as the flow channel.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] Compared to existing technologies, this device allows for convenient replacement of filter and screening components during the treatment of acidic wastewater, thus ensuring stable treatment results. Furthermore, it accurately measures pH levels during the neutralization and heavy metal precipitation processes to ensure complete precipitation. After precipitation, flocculants are added to promote the formation of large flocs. Finally, opening the solenoid valve separates the heavy metal precipitate, achieving effective solid-liquid separation. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the first limiting frame;

[0035] Figure label:

[0036] 1. Processing tank; 2. Inlet channel; 3. Outlet channel; 4. Non-contact level sensor; 5. Electronic indicator; 6. First limit frame; 7. First telescopic cylinder; 8. Flow channel; 9. Second limit frame; 10. Screening component; 11. Rotating roller; 12. Gear transmission assembly; 13. Stirring rod; 14. First metering pump; 15. Second metering pump; 16. Second telescopic cylinder; 17. pH sensor; 18. Filter plate; 19. Handle; 20. Hopper; 21. Solenoid valve; 22. Collection tank. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0038] like Figure 1 and Figure 2 As shown, an acid pickling wastewater treatment device includes a treatment tank 1, which is equipped with an inlet channel 2 and an outlet channel 3. It also includes a non-contact level sensor 4, an electronic indicator 5, a stirring assembly, an alkali addition assembly, a flocculant addition assembly, a pH detection assembly, a first limiting frame 6, a filtration assembly, a temporary storage assembly, a first telescopic cylinder 7, a flow channel 8, a second limiting frame 9, and a screening component 10.

[0039] The non-contact liquid level sensor 4, electronic indicator 5, stirring assembly, alkali addition assembly, flocculant addition assembly, and adjustable pH detection assembly are all installed on the treatment tank 1. The non-contact liquid level sensor 4 is electrically connected to the electronic indicator 5 (specifically, the electronic indicator 5 is either a voice prompt or a buzzer, and the non-contact liquid level sensor 4 is an ultrasonic liquid level sensor).

[0040] The first limiting frame 6 is fixed in the liquid inlet channel 2, and a filter assembly is placed on the first limiting frame 6;

[0041] The temporary storage component is fixed inside the processing box 1;

[0042] The first telescopic cylinder 7 is symmetrically fixed on the processing box 1, and the first telescopic cylinder 7 is connected to a flow channel 8 located directly below the liquid outlet channel 3 and adapted to the end face size of the liquid outlet channel 3.

[0043] The second limiting frame 9 is fixed in the flow channel 8, and a screening component 10 is placed on the second limiting frame 9 (it should be noted that both the first limiting frame 6 and the second limiting frame 9 are rectangular frames that are open from top to bottom). A collection box 22 is provided below the flow channel 8.

[0044] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the stirring assembly includes a rotating roller 11, a gear transmission assembly 12 (which is prior art and its working principle will not be described, but includes a servo motor, a main gear, and a secondary gear), and a stirring rod 13.

[0045] The rotating roller 11 is rotatably connected to the processing tank 1 and is symmetrically distributed about the liquid inlet channel 2;

[0046] The gear transmission assembly 12 is fixed on the processing box 1 and corresponds one-to-one with the rotating roller 11 and is connected to it;

[0047] Several sets of stirring rods 13 are symmetrically fixed on the rotating roller 11 and are located inside the processing box 1.

[0048] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the alkali addition assembly includes a first metering pump 14 and an alkali tank.

[0049] The first metering pump 14 is fixed on the processing tank 1 and the output end of the first metering pump 14 is connected to the inside of the processing tank 1.

[0050] The alkali tank is connected to the input terminal of the first metering pump 14 (the alkali tank is not shown in the figure).

[0051] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the flocculant addition assembly includes a second metering pump 15 and a flocculant tank.

[0052] The second metering pump 15 is fixed on the processing box 1 and the output end of the second metering pump 15 is connected to the inside of the processing box 1.

[0053] The flocculant tank is connected to the input end of the second metering pump 15 (the flocculant tank is not shown in the figure).

[0054] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the pH detection assembly includes a second telescopic cylinder 16 and a pH sensor 17.

[0055] The second telescopic cylinder 16 is fixed on the processing tank 1, and the telescopic cylinder of the second telescopic cylinder 16 passes through the processing tank 1 and is connected to the pH sensor 17.

[0056] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the filter assembly includes a filter plate 18 and a handle 19.

[0057] The filter plate 18 is placed on the first limiting frame 6, and the filter plate 18 is in contact with the inner wall of the liquid inlet channel 2;

[0058] The handle 19 is symmetrically fixed on the filter plate 18 and is higher than the liquid inlet channel 2.

[0059] Specific implementation of the embodiments of this utility model, such as Figure 1 As shown, the temporary storage component includes a hopper 20 and a solenoid valve 21.

[0060] The feeding hopper 20 is fixed inside the processing box 1, and the feeding hopper 20 is located below the rotating roller 11 and distributed at intervals with it. A solenoid valve 21 is provided on the discharge port of the feeding hopper 20.

[0061] In order to facilitate the removal and replacement of the screen 10 while collecting the treated wastewater, the above embodiment is further refined by providing an opening on the collection box 22 that allows the flow channel 8 to move up and down and has the same size as the flow channel 8. The opening is not shown in the figure.

[0062] In a further optimization of the above embodiment, a suction pump connected to the bottom of the collection box 22 is fixed on it to automatically transport the treated wastewater to the next process for deep purification. The suction pump is not shown in the figure.

[0063] It should be noted that the non-contact liquid level sensor 4, electronic indicator 5, first telescopic cylinder 7, gear transmission assembly 12, first metering pump 14, second metering pump 15, second telescopic cylinder 16, pH sensor 17, and solenoid valve 21 are all electrically connected to the controller, which is not labeled in the figure.

[0064] The working process of this utility model:

[0065] First, stainless steel pickling wastewater is introduced into the treatment tank 1 through the inlet channel 2. Then, the filter plate 18 can retain large impurities in the pickling wastewater. As the stainless steel acidic wastewater continues to flow in, the liquid level in the treatment tank 1 will gradually rise (the solenoid valve 21 is always closed during the water flow process). Then, when the liquid level reaches the height preset in the non-contact liquid level sensor 4, the non-contact liquid level sensor 4 will send a feedback signal to the controller, and the controller will then control the electronic prompt device 5 to remind the staff to stop the water flow.

[0066] The controller then activates the first metering pump 14 to introduce alkaline solution into the acidic wastewater. Simultaneously, the second telescopic cylinder 16 drives the pH sensor 17 to submerge below the liquid surface, and the stirring assembly operates (it should be noted that the stirring assembly and pH sensor 17 are spaced apart). This ensures thorough mixing of the alkaline solution and the acidic wastewater. As the alkaline solution is added, the pH value of the wastewater gradually rises. When the pH value reaches a preset value, the pH sensor 17 sends a signal to the controller, which then stops the first metering pump 14. The controller then activates the second metering pump 15 to add flocculant to the wastewater, causing heavy metal precipitates to coagulate into large flocs, thereby improving the sedimentation effect. After the flocculant addition is complete, the controller... When the solenoid valve 21 is opened, the wastewater and heavy metal precipitate will flow out from the outlet channel 3. The initial flow channel 8 is in contact with the bottom of the outlet channel 3, and the screen 10 can then trap the heavy metal precipitate. The remaining wastewater is injected into the collection tank 22. When the filter plate 18 needs to be replaced, simply pull up the handle 19 to unload the material. When the screen 10 needs to be replaced, the first telescopic cylinder 7 is first retracted by the controller (at this time, the solenoid valve 21 is in the closed state). After the flow channel 8 is away from the outlet channel 3, the screen 10 can be taken out. Thus, the replacement process of the filter and the screen 10 is convenient. At the same time, the pH value of the wastewater can be monitored in real time during the neutralization process to ensure that heavy metals can precipitate, thereby improving the treatment effect of the acid washing wastewater.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pickling wastewater treatment device, comprising a treatment tank (1), wherein the treatment tank (1) is provided with an inlet channel (2) and an outlet channel (3), characterized in that, It also includes a non-contact liquid level sensor (4), an electronic indicator (5), a stirring assembly, an alkali addition assembly, a flocculant addition assembly, a pH detection assembly, a first limiting frame (6), a filter assembly, a temporary storage assembly, a first telescopic cylinder (7), a flow channel (8), a second limiting frame (9), and a screening component (10). The non-contact liquid level sensor (4), electronic indicator (5), stirring assembly, alkali addition assembly, flocculant addition assembly and adjustable pH detection assembly are all installed on the processing tank (1), and the non-contact liquid level sensor (4) is electrically connected to the electronic indicator (5). The first limiting frame (6) is fixed in the liquid inlet channel (2), and a filter assembly is placed on the first limiting frame (6); The temporary storage component is fixed inside the processing box (1); The first telescopic cylinder (7) is symmetrically fixed on the processing box (1), and the first telescopic cylinder (7) is connected to a flow channel (8) located directly below the liquid outlet channel (3) and adapted to the end face size of the liquid outlet channel (3). The second limiting frame (9) is fixed in the flow channel (8), and a screening component (10) is placed on the second limiting frame (9). A collection box (22) is provided below the flow channel (8).

2. The pickling wastewater treatment equipment according to claim 1, characterized in that, The electronic prompt device (5) is either a voice prompt or a buzzer.

3. The pickling wastewater treatment equipment according to claim 1, characterized in that, The stirring assembly includes a rotating roller (11), a gear transmission assembly (12), and a stirring rod (13). The rotating roller (11) is rotatably connected to the processing box (1) and is symmetrically distributed about the liquid inlet channel (2); The gear transmission assembly (12) is fixed on the processing box (1) and corresponds one-to-one with the rotating roller (11) and is connected to it; Several sets of stirring rods (13) are symmetrically fixed on the rotating roller (11) and located inside the processing box (1).

4. The pickling wastewater treatment equipment according to claim 1, characterized in that, The alkali addition assembly includes a first metering pump (14) and an alkali tank. The first metering pump (14) is fixed on the processing tank (1) and the output end of the first metering pump (14) is connected to the inside of the processing tank (1); The alkali tank is connected to the input end of the first metering pump (14).

5. The pickling wastewater treatment equipment according to claim 1, characterized in that, The flocculant addition assembly includes a second metering pump (15) and a flocculant tank. The second metering pump (15) is fixed on the processing box (1) and the output end of the second metering pump (15) is connected to the inside of the processing box (1); The flocculant tank is connected to the input end of the second metering pump (15).

6. The pickling wastewater treatment equipment according to claim 1, characterized in that, The pH detection component includes a second telescopic cylinder (16) and a pH sensor (17). The second telescopic cylinder (16) is fixed on the treatment box (1), and the telescopic cylinder of the second telescopic cylinder (16) passes through the treatment box (1) and is connected to a pH sensor (17).

7. The pickling wastewater treatment equipment according to claim 1, characterized in that, The filter assembly includes a filter plate (18) and a handle (19). The filter plate (18) is placed on the first limiting frame (6), and the filter plate (18) is in contact with the inner wall of the liquid inlet channel (2); The handle (19) is symmetrically fixed on the filter plate (18) and the handle (19) is higher than the liquid inlet channel (2).

8. The pickling wastewater treatment equipment according to claim 3, characterized in that, The temporary storage component includes a hopper (20) and a solenoid valve (21). The feeding hopper (20) is fixed inside the processing box (1), and the feeding hopper (20) is located below the rotating roller (11) and spaced apart from it. A solenoid valve (21) is provided on the discharge port of the feeding hopper (20).

9. The pickling wastewater treatment equipment according to claim 1, characterized in that, The collection box (22) has an opening that allows the flow channel (8) to move up and down and is the same size as the flow channel (8).

Images