Chemical adding tank for nickel-containing wastewater treatment

Abstract

The utility model relates to the technical field of nickel-containing wastewater treatment, in particular to a chemical adding tank for nickel-containing wastewater treatment, which is provided with an electrically-driven screw-mounted lifting piston type pressurizing cylinder capable of acting on a chemical tank to quantitatively add chemicals, so that the practicability is improved; comprising a nickel removing and dosing tank and a dosing head, the lower side of the right end of the nickel removing and dosing tank is communicated with the inner side of the dosing head, and the nickel removing and dosing device further comprises a connecting frame, a connecting frame, a pressurizing cylinder, an air inlet pipe, an air outlet pipe, a reciprocating driving motor, a lifting screw rod, a lifting screw pipe and a piston; the middle of the top end in the connecting frame is connected with the top end of the pressurizing cylinder, the output end of the pressurizing cylinder is communicated with the input end of the nickel removing and dosing tank through an air outlet pipe, the middle of the bottom end of the connecting frame is connected with the lower portion of the top end of the reciprocating driving motor, and the output end of the reciprocating driving motor is connected with the bottom end of the lifting screw. The top end of the lifting solenoid is connected with the middle of the bottom end of the piston.

Description

Technical Field

[0001] This utility model relates to the technical field of nickel-containing wastewater treatment, specifically to a dosing tank for nickel-containing wastewater treatment. Background Technology

[0002] Nickel-containing wastewater can be categorized into three main types: electroplating nickel wastewater, chemical nickel plating wastewater, and zinc-nickel alloy wastewater. Electroplating nickel wastewater contains only ordinary nickel ions, which exist in a divalent form. Besides nickel ions, there are no other heavy metals or complexing agents in the wastewater. This type of wastewater can be treated directly by adding alkali for precipitation, and the nickel ions will meet discharge standards. Chemical nickel plating involves providing the electrons needed to reduce nickel ions through a physicochemical reaction, typically using sodium hypophosphite. Sodium hypophosphite provides electrons to complex nickel, reducing it to nickel metal which is then plated onto the substrate. Commonly used complexing agents include sodium citrate, sodium tartrate, and sodium malate. Zinc-nickel alloy electroplating is a very complex process. The resulting zinc-nickel alloy wastewater contains a large amount of complexing agents, primarily organic carboxylic acid molecules with long chains and large molecular weights. Their complexing ability is stronger than that of sodium citrate and tartaric acid, making it difficult to achieve discharge standards even with alkali treatment.

[0003] Nickel-containing wastewater typically requires the use of a dosing tank to add chemicals to remove nickel. Existing dosing tanks generally consist of containers with corresponding valves and discharge pipes, which have poor quantity control and are not practical. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dosing tank for treating nickel-containing wastewater, which is equipped with an electrically driven screw-mounted lifting piston-type pressure cylinder that can act on the reagent tank to add a quantitative amount of reagent, thereby improving its practicality.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dosing tank for treating nickel-containing wastewater, comprising a nickel removal dosing tank and a dosing head. The lower right side of the nickel removal dosing tank is connected to the inner side of the dosing head. It also includes a connecting frame, a connecting frame, a pressurizing cylinder, an air inlet pipe, an air outlet pipe, a reciprocating drive motor, a lifting screw, a lifting spiral tube, and a piston. The left side of the nickel removal dosing tank is connected to the middle right side of the connecting frame via the connecting frame. The middle top of the connecting frame is connected to the top of the pressurizing cylinder. The output end of the pressurizing cylinder is connected to the input end of the nickel removal dosing tank via the air outlet pipe. The input end of the pressurizing cylinder is connected to the inner side of the air inlet pipe. The inner side of the pressurizing cylinder is vertically slidably connected to the outer side of the piston. The middle bottom of the connecting frame is connected to the lower top of the reciprocating drive motor. The output end of the reciprocating drive motor is connected to the bottom end of the lifting screw. The outer wall of the lifting screw is screwed to the inner wall of the lifting spiral tube. The top end of the lifting spiral tube is connected to the middle bottom end of the piston.

[0008] Preferably, it also includes an external threaded port and an internal threaded cap, wherein the top side of the nickel removal dosing tank is connected to the bottom end of the external threaded port, and the outer wall of the external threaded port is detachably screwed to the inner wall of the internal threaded cap.

[0009] Preferably, it also includes a screw-on handle, wherein one side of the outer end of the internal threaded cap is connected to the inner side of the screw-on handle.

[0010] Preferably, it also includes an observation window, with the front middle of the nickel removal dosing tank connected to the rear side of the observation window.

[0011] Preferably, it also includes a corrugated sleeve, wherein the outer side of the bottom end of the lifting screw tube is connected to the outer side of the lifting screw at the bottom end of the inner part of the connecting frame and the bottom side of the corrugated sleeve.

[0012] Preferably, it also includes one-way valves, with a set of one-way valves provided on the air inlet pipe in the input direction and on the air outlet pipe in the output direction.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a dosing tank for treating nickel-containing wastewater, which has the following beneficial effects:

[0015] The nickel removal dosing tank is filled with chemicals. When the reciprocating drive motor runs, it causes the lifting screw to rotate. The lifting screw, screwed into the lifting solenoid tube, causes the lifting solenoid tube to drive the piston to slide down inside the pressure cylinder. Gas is then introduced into the pressure cylinder through the air inlet pipe. Afterward, the reciprocating drive motor runs in reverse, causing the lifting screw to rotate in the opposite direction. The lifting screw, screwed into the lifting solenoid tube, causes the lifting solenoid tube to drive the piston to slide up inside the pressure cylinder. Part of the gas in the pressure cylinder is output into the nickel removal dosing tank through the air outlet pipe, thus discharging a metered amount of chemicals from the nickel removal dosing tank through the dosing head. The electrically driven screw-mounted lifting piston pressure cylinder can act on the chemical tank to add a metered amount of chemicals, improving practicality. Attached Figure Description

[0016] Figure 1 This is an axial view of the structural schematic diagram of this utility model;

[0017] Figure 2 This utility model Figure 1 The left view;

[0018] Figure 3 This utility model Figure 1 Front view;

[0019] Figure 4 This utility model Figure 1 The top view.

[0020] The following are labels in the attached diagram: 1. Nickel removal dosing tank; 3. Dosing head; 4. Connecting frame; 5. Connecting frame; 6. Pressurizing cylinder; 7. Air inlet pipe; 8. Air outlet pipe; 9. Reciprocating drive motor; 10. Lifting screw; 11. Lifting solenoid; 12. Piston; 13. External threaded port; 14. Internal threaded cap; 15. Tightening handle; 16. Observation window; 17. Corrugated sleeve; 18. One-way valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Please see Figure 1-4A dosing tank for treating nickel-containing wastewater includes a nickel removal dosing tank 1 and a dosing head 3. The lower right side of the nickel removal dosing tank 1 is connected to the inner side of the dosing head 3. It also includes a connecting frame 4, a connecting frame 5, a pressure cylinder 6, an air inlet pipe 7, an air outlet pipe 8, a reciprocating drive motor 9, a lifting screw 10, a lifting solenoid 11, and a piston 12. The left side of the nickel removal dosing tank 1 is connected to the middle right side of the connecting frame 5 via the connecting frame 4. The middle top of the connecting frame 5 is connected to the top of the pressure cylinder 6. The output end of the pressure cylinder 6 is connected to the input end of the nickel removal dosing tank 1 via the air outlet pipe 8. The input end of the pressure cylinder 6 is connected to the inner side of the air inlet pipe 7. The inner side of the pressure cylinder 6 is vertically slidably connected to the outer side of the piston 12. The middle bottom of the connecting frame 5 is connected to the lower top of the reciprocating drive motor 9. The output end of the reciprocating drive motor 9 is connected to the lifting screw 10. The bottom end is connected to the lifting screw 10, and the outer wall of the lifting screw 10 is screwed to the inner wall of the lifting screw tube 11. The top end of the lifting screw tube 11 is connected to the middle of the bottom end of the piston 12. When the nickel removal dosing tank 1 is filled with reagent, when the reciprocating drive motor 9 runs, the lifting screw 10 can be rotated. The lifting screw 10 is screwed to the lifting screw tube 11, which drives the piston 12 to slide down in the pressure cylinder 6. Gas is injected into the pressure cylinder 6 through the air inlet pipe 7. Then the reciprocating drive motor 9 runs in reverse, which makes the lifting screw 10 reverse. The lifting screw 10 is screwed to the lifting screw tube 11, which drives the piston 12 to slide up in the pressure cylinder 6. Part of the gas in the pressure cylinder 6 is output to the nickel removal dosing tank 1 through the air outlet pipe 8, thereby discharging the metered reagent in the nickel removal dosing tank 1 from the dosing head 3.

[0024] It also includes an external threaded port 13 and an internal threaded cover 14. The top side of the nickel removal dosing tank 1 is connected to the bottom end of the external threaded port 13. The outer wall of the external threaded port 13 and the inner wall of the internal threaded cover 14 are detachably screwed together. The agent can be injected into the nickel removal dosing tank 1 through the external threaded port 13, and the internal threaded cover 14 is screwed closed to the outside of the external threaded port 13 to seal it, thereby improving reliability.

[0025] It also includes a screw-on handle 15, one side of the outer end of the inner threaded cover 14 is connected to the inner side of the screw-on handle 15; by pinching the screw-on handle 15, the outer side of the inner threaded cover 14 can be connected to make the whole rotate, which facilitates screw-on installation and removal.

[0026] It also includes an observation window 16, which is connected to the rear side of the front middle of the nickel removal dosing tank 1; the liquid level inside the nickel removal dosing tank 1 can be observed through the observation window 16, which facilitates judgment and treatment and improves convenience.

[0027] It also includes a corrugated sleeve 17, and the outer side of the bottom end of the lifting screw tube 11 and the outer side of the lifting screw 10 at the bottom of the inner end of the connecting frame 5 are connected to the bottom side of the corrugated sleeve 17; the corrugated sleeve 17 can shield and protect the outside of the lifting screw 10, avoid dust contamination on its surface, and improve reliability.

[0028] It also includes a one-way valve 18. A set of one-way valves 18 is provided on the air inlet pipe 7 in the input direction and on the air outlet pipe 8 in the output direction. The one-way valves 18 can conduct one-way flow in the input direction of the air inlet pipe 7 and the output direction of the air outlet pipe 8 to avoid backflow and improve reliability.

[0029] In summary, when using a nickel-containing wastewater treatment dosing tank, chemicals can be injected into the nickel removal dosing tank 1 through the external threaded port 13. The internal threaded cover 14 is screwed shut onto the outside of the external threaded port 13 by the pinching and turning handle 15, sealing it. When the reciprocating drive motor 9 runs, it rotates the lifting screw 10. The lifting screw 10, through its screw-fitting with the lifting screw tube 11, causes the lifting screw tube 11 to drive the piston 12 to slide down within the pressure cylinder 6. A one-way valve 18 unidirectionally guides the flow, and air is injected into the pressure cylinder 6 through the air inlet pipe 7. Then, the reciprocating drive motor 9 runs in reverse, causing the lifting screw 10 to reverse. The lifting screw 10 is screwed into the lifting solenoid tube 11, which drives the piston 12 to slide upward in the pressure cylinder 6. Part of the gas in the pressure cylinder 6 is output to the nickel removal dosing tank 1 through the gas outlet pipe 8, thereby discharging the metered amount of reagent in the nickel removal dosing tank 1 from the dosing head 3. In addition, the liquid level inside the nickel removal dosing tank 1 can be observed through the observation window 16, which is convenient for judgment and treatment. The corrugated sleeve 17 can shield and protect the lifting screw 10 from external dust contamination.

[0030] This reciprocating drive motor 9 is a commercially available device known to those skilled in the art. We are simply using it here without making any structural or functional improvements, and we will not go into detail about it here.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dosing tank for treating nickel-containing wastewater, comprising a nickel removal dosing tank (1) and a dosing head (3), wherein the lower right side of the nickel removal dosing tank (1) is connected to the inner side of the dosing head (3), characterized in that, It also includes a connecting frame (4), a connecting frame (5), a pressurizing cylinder (6), an air inlet pipe (7), an air outlet pipe (8), a reciprocating drive motor (9), a lifting screw (10), a lifting screw tube (11), and a piston (12). The left side of the nickel removal dosing tank (1) is connected to the middle right side of the connecting frame (5) via the connecting frame (4). The middle top of the connecting frame (5) is connected to the top of the pressurizing cylinder (6). The output end of the pressurizing cylinder (6) is connected to the nickel removal dosing tank (1) via the air outlet pipe (8). The inlet end is connected to the inlet end, the inlet end of the pressurizing cylinder (6) is connected to the inside of the air inlet pipe (7), the inside of the pressurizing cylinder (6) is vertically slidably connected to the outside of the piston (12), the bottom middle of the connecting frame (5) is connected to the top of the reciprocating drive motor (9), the output end of the reciprocating drive motor (9) is connected to the bottom end of the lifting screw (10), the outer wall of the lifting screw (10) is screwed to the inner wall of the lifting screw tube (11), and the top of the lifting screw tube (11) is connected to the bottom middle of the piston (12).

2. The dosing tank for treating nickel-containing wastewater according to claim 1, characterized in that: It also includes an external threaded port (13) and an internal threaded cover (14). The top side of the nickel removal dosing tank (1) is connected to the bottom end of the external threaded port (13), and the outer wall of the external threaded port (13) and the inner wall of the internal threaded cover (14) are detachably screwed together.

3. The dosing tank for treating nickel-containing wastewater according to claim 2, characterized in that: It also includes a screw-on handle (15), one side of the outer end of the inner threaded cap (14) is connected to the inner side of the screw-on handle (15).

4. The dosing tank for treating nickel-containing wastewater according to claim 1, characterized in that: It also includes an observation window (16), with the front middle of the nickel removal dosing tank (1) connected to the rear side of the observation window (16).

5. The dosing tank for treating nickel-containing wastewater according to claim 1, characterized in that: It also includes a corrugated sleeve (17), the outer side of the bottom end of the lifting screw (11) is connected to the outer side of the lifting screw (10) at the bottom end of the inner end of the connecting frame (5) and the bottom side of the corrugated sleeve (17).

6. The dosing tank for treating nickel-containing wastewater according to claim 1, characterized in that: It also includes a one-way valve (18), and a set of one-way valves (18) are provided on the air inlet pipe (7) in the input direction and on the air outlet pipe (8) in the output direction.

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