Solid-liquid separation device for electroplating sewage treatment

Abstract

The utility model relates to the technical field of electroplating sewage treatment, in particular to a solid-liquid separation device for electroplating sewage treatment, which comprises a settling pond for settling electroplating sewage, settled sewage is arranged in the settling pond, one side of the settling pond is fixedly connected with a pre-discharge pond, and the other side of the settling pond is fixedly connected with a water outlet of the pre-discharge pond. According to the electroplating sewage sedimentation tank, the pre-drainage tank is arranged on one side of the sedimentation tank, water drainage openings in a linear array are formed in the side, close to the pre-drainage tank, of the sedimentation tank, a sealing plate is arranged in each water drainage opening, and the sealing plates and the water drainage openings are all designed in a trapezoidal mode. Only sediments and part of water on the bottom layer of the sedimentation tank are reserved, pretreatment of solid-liquid separation is completed, all electroplating sewage in the sedimentation tank does not need to be filtered, the electroplating sewage filtering cost is reduced, and the electroplating sewage solid-liquid separation speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroplating sewage treatment technical field, concretely is a kind of solid-liquid separation device for electroplating sewage treatment. BACKGROUND

[0002] Electroplating sewage is mainly derived from plating piece cleaning water, waste electroplating solution, equipment leakage and workshop flushing water, contains zinc, chromium, nickel, cyanide and other high-toxicity heavy metals and organic matter, needs to be realized by high-efficiency process harmless treatment.

[0003] In electroplating sewage treatment, heavy metal ions such as zinc, chromium and nickel can be effectively removed by chemical precipitation method, and neutralization precipitation method adjusts PH value by adding alkaline substances (such as sodium hydroxide), so that heavy metals generate water-insoluble hydroxide precipitate.

[0004] However, in the prior art, after the electroplating sewage is precipitated, the solid and the sewage generated by the precipitation need to be separated, and the existing separation method is to filter all the electroplating sewage and the precipitate in the inside of the precipitation tank together, which has the problems of high filtering cost and limited solid-liquid separation speed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of solid-liquid separation device for electroplating sewage treatment to solve the problems raised in the above background.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A kind of solid-liquid separation device for electroplating sewage treatment, including the precipitation tank for electroplating sewage precipitation, the inside of the precipitation tank is the sewage after having completed precipitation, the side of the precipitation tank is fixedly connected with pre-discharge pool, the side of the precipitation tank close to pre-discharge pool is provided with the linear array of drainage outlet, the sealing plate is arranged in each drainage outlet, the sealing plate and drainage outlet are all designed with trapezoidal.

[0008] The side of the sealing plate located in the inside of pre-discharge pool is fixedly connected with connecting block, the side of the connecting block is fixedly connected with horizontal pressure bar, the length of horizontal pressure bar connected on different height sealing plate is different, the length of horizontal pressure bar located on different height is sequentially increased from top to bottom, the both ends of horizontal pressure bar are fixedly connected with inclined adjusting rod, the inside of pre-discharge pool is provided with two vertically movable vertical pressure bars, vertical pressure bar and horizontal pressure bar are in abutment.

[0009] Preferably, the end of the inclined adjusting rod away from the horizontal pressure bar is fixedly connected with transverse connecting rod, the end of the transverse connecting rod is formed with bending and fixedly connected with fixed ring, the side of the fixed ring is fixedly connected with pressure spring, the end of the pressure spring is fixedly connected with the inner wall of pre-discharge pool.

[0010] Preferably, the inner wall of the pre-drainage tank is fixedly connected to a guide plate, and the guide plate and the transverse connecting rod are slidably connected.

[0011] Preferably, a motor bracket is fixedly connected to one side of the pre-drainage tank, a servo motor is mounted on the motor bracket, a bidirectional screw is mounted on the servo motor, two movable blocks are threadedly connected to the bidirectional screw, and a vertical pressure rod is fixed to the bottom of the movable blocks.

[0012] Preferably, an auxiliary plate is fixedly connected to one side of the pre-drainage tank, and a guide shaft is fixedly connected between the auxiliary plate and the motor bracket. The guide shaft and the vertical pressure rod are slidably connected.

[0013] Preferably, a drain pipe is fixedly connected to one side of the pre-drainage tank, and an electrically controlled valve is installed on the drain pipe.

[0014] The beneficial effects of this utility model are:

[0015] This invention features a pre-discharge tank on one side of the electroplating wastewater sedimentation tank. After the electroplating wastewater settles, sealing plates at different heights can be opened sequentially to discharge the water from the surface to the depths of the sedimentation tank. This first separates most of the water inside the sedimentation tank, retaining only the sediment and some water at the bottom, thus completing the pretreatment for solid-liquid separation. Subsequently, existing filtration methods can be used to separate the water and sediment at the bottom of the sedimentation tank, eliminating the need to filter all the electroplating wastewater inside the sedimentation tank, reducing the cost of electroplating wastewater filtration, and increasing the speed of solid-liquid separation of electroplating wastewater. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Side view of the pre-drainage tank;

[0019] Figure 3 This is a utility model Figure 2 Cross-sectional view of the intermediate pre-drainage tank;

[0020] Figure 4 This is a utility model Figure 3 Schematic diagram of the middle sealing plate and vertical pressure bar;

[0021] Figure 5 This is a utility model Figure 4Rear view of the middle sealing plate.

[0022] The attached figures are labeled as follows:

[0023] 1. Sedimentation tank; 2. Pre-drainage tank; 201. Drainage pipe; 202. Electrically controlled valve; 3. Sealing plate; 5. Connecting block; 6. Horizontal pressure bar; 7. Inclined adjustment bar; 8. Vertical pressure bar; 9. Horizontal connecting bar; 901. Fixing ring; 10. Pressure spring; 11. Guide plate; 12. Motor bracket; 13. Servo motor; 14. Bidirectional screw; 15. Movable block; 16. Auxiliary plate; 17. Guide shaft. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1 A solid-liquid separation device for electroplating wastewater treatment includes a sedimentation tank 1 for settling electroplating wastewater. The sedimentation tank 1 contains electroplating wastewater that has already undergone sedimentation. The entire sedimentation tank 1 adopts a rectangular design. Figure 1 The image only shows a part of sedimentation tank 1, not the complete sedimentation tank 1. Sedimentation tank 1 can also discharge water and sediment from the bottom of the tank through pipes or pumps.

[0026] like Figure 1 , Figure 2 and Figure 3 The sedimentation tank 1 is fixedly connected to a pre-drainage tank 2 on one side. The sedimentation tank 1 is provided with a linear array of drain outlets on the side near the pre-drainage tank 2. Each drain outlet is provided with a sealing plate 3. The outer surface of the sealing plate 3 is made of rubber. Both the sealing plate 3 and the drain outlet adopt a trapezoidal design so that the sealing plate 3 can fit tightly with the drain outlet to seal the drain outlet.

[0027] like Figure 3 , Figure 4 and Figure 5The sealing plate 3 is fixedly connected to a connecting block 5 on one side inside the pre-drainage tank 2. A horizontal pressure rod 6 is fixedly connected to one side of the connecting block 5. Each sealing plate 3 is connected to a horizontal pressure rod 6 through a connecting block 5, and the connecting block 5 is connected to the middle part of the horizontal pressure rod 6. The drain outlet and the corresponding sealing plate 3 are located at different heights. The length of the horizontal pressure rod 6 connected to the sealing plate 3 at different heights is different. The length of the horizontal pressure rod 6 at different heights increases from top to bottom. Both ends of the horizontal pressure rod 6 are fixedly connected to tilt adjustment rods 7. The interior of the pre-drainage tank 2 is provided with two vertical pressure rods 8 that can move in opposite directions. The vertical pressure rod 8 and the horizontal pressure rod 6 abut against each other.

[0028] like Figure 3 The tilt adjustment rod 7 is fixedly connected to a transverse connecting rod 9 at the end away from the horizontal pressure rod 6. One end of the transverse connecting rod 9 is bent and fixedly connected to a fixing ring 901. A pressure spring 10 is fixedly connected to one side of the fixing ring 901. One end of the pressure spring 10 is fixedly connected to the inner wall of the pre-drainage tank 2. The pressure spring 10 exerts a pulling force on the fixing ring 901, the transverse connecting rod 9, the tilt adjustment rod 7, the horizontal pressure rod 6, and the sealing plate 3 in a direction away from the sedimentation tank 1.

[0029] like Figure 3 The inner wall of the pre-drainage tank 2 is fixedly connected with a guide plate 11. The guide plate 11 and the transverse connecting rod 9 are slidably connected. Each transverse connecting rod 9 is slidably connected with a guide plate 11, so that the transverse connecting rod 9 and the tilt adjustment rod 7, the horizontal pressure rod 6 and the sealing plate 3 connected to the transverse connecting rod 9 can only move in the horizontal direction.

[0030] like Figure 2 and Figure 3 A motor bracket 12 is fixedly connected to one side of the pre-drainage pool 2. A servo motor 13 is installed on the motor bracket 12. The servo motor 13 is connected to an external power supply and controlled by an external switch. A bidirectional screw 14 is installed on the servo motor 13. The bidirectional screw 14 is divided into two parts with opposite thread directions in the middle. Two movable blocks 15 are threadedly connected to the bidirectional screw 14. The two movable blocks 15 are located on the threads of the bidirectional screw 14 in different directions. A vertical pressure rod 8 is fixed to the bottom of the movable blocks 15, so that when the bidirectional screw 14 rotates, it can drive the two movable blocks 15 and the two vertical pressure rods 8 to move towards each other.

[0031] like Figure 2 An auxiliary plate 16 is fixedly connected to one side of the pre-drainage pool 2. A guide shaft 17 is fixedly connected between the auxiliary plate 16 and the motor bracket 12. The guide shaft 17 is slidably connected to the vertical pressure rod 8, which can ensure that the vertical pressure rod 8 and the movable block 15 can only move horizontally. The end of the bidirectional screw 14 away from the servo motor 13 is rotatably connected to the auxiliary plate 16, which can ensure the stability of the bidirectional screw 14.

[0032] like Figure 1 and Figure 2 A drain pipe 201 is fixedly connected to one side of the pre-drainage tank 2. An electric control valve 202 is installed on the drain pipe 201. When the electric control valve 202 is opened, the water inside the pre-drainage tank 2 can be discharged through the drain pipe 201 into the next electroplating wastewater treatment equipment.

[0033] The working principle of the solid-liquid separation device for electroplating wastewater treatment provided by this utility model is as follows:

[0034] When the servo motor 13 drives the bidirectional screw 14 to rotate in different directions, it can drive the two movable blocks 15 and the two vertical pressure rods 8 to move towards each other, so that the two vertical pressure rods 8 move closer to each other or further away from each other.

[0035] After the electroplating wastewater has settled inside the sedimentation tank 1, the two vertical pressure rods 8 are controlled to move away from each other. Since the length of the horizontal pressure rods 6 at different heights increases from top to bottom, the tilt adjustment rods 7 at both ends of the horizontal pressure rod 6 at the higher position can contact the vertical pressure rods 8 first, and the sealing plate 3 at the corresponding height opens, so that the wastewater inside the sedimentation tank 1 can flow out through the drain outlet at the opening of the sealing plate 3. The sealing plate 3 opens from top to bottom, so that the surface water of the sedimentation tank 1 can be released first, and then the deep water can be released, leaving only the sediment and some water at the bottom of the sedimentation tank 1.

[0036] Then, control the two vertical pressure rods 8 to move closer to each other. The vertical pressure rods 8 squeeze the tilt adjustment rod 7, which drives the horizontal pressure rod 6 and the sealing plate 3 to move, so that the sealing plate 3 seals the corresponding drain outlets from low to high in sequence.

[0037] Compared with related technologies, the solid-liquid separation device for electroplating wastewater treatment provided by this utility model has the following beneficial effects:

[0038] This invention, by setting a pre-discharge tank 2 on one side of the electroplating wastewater sedimentation tank 1, allows for the sequential opening of sealing plates 3 at different heights after the electroplating wastewater has settled. This allows the water inside the sedimentation tank 1 to be discharged sequentially from the surface to the depths, first separating most of the water inside the sedimentation tank 1, retaining only the sediment and some water at the bottom of the sedimentation tank 1. This completes the pretreatment for solid-liquid separation. Subsequently, the water and sediment at the bottom of the sedimentation tank 1 can be separated using existing filtration methods, eliminating the need to filter all the electroplating wastewater inside the sedimentation tank 1, thus reducing the cost of electroplating wastewater filtration and increasing the speed of electroplating wastewater filtration.

[0039] 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 embodiments and descriptions in the specification 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 the claimed utility model.

Claims

1. A solid-liquid separation device for electroplating wastewater treatment, comprising a sedimentation tank (1) for settling electroplating wastewater, wherein the sedimentation tank (1) contains wastewater that has already undergone sedimentation, characterized in that, A pre-drainage tank (2) is fixedly connected to one side of the sedimentation tank (1). A linear array of drain outlets is provided on the side of the sedimentation tank (1) near the pre-drainage tank (2). Each drain outlet is equipped with a sealing plate (3). Both the sealing plate (3) and the drain outlet are designed in a trapezoidal shape. The sealing plate (3) is fixedly connected to a connecting block (5) on one side inside the pre-drainage tank (2). A horizontal pressure rod (6) is fixedly connected to one side of the connecting block (5). The lengths of the horizontal pressure rods (6) connected to the sealing plate (3) at different heights are different. The lengths of the horizontal pressure rods (6) at different heights increase from top to bottom. Both ends of the horizontal pressure rods (6) are fixedly connected to tilt adjustment rods (7). The pre-drainage tank (2) is equipped with two vertical pressure rods (8) that can move in opposite directions. The vertical pressure rods (8) and the horizontal pressure rods (6) are in contact with each other.

2. The solid-liquid separation device for electroplating wastewater treatment according to claim 1, characterized in that, The tilt adjustment rod (7) is fixedly connected to a transverse connecting rod (9) at one end away from the horizontal pressure rod (6). One end of the transverse connecting rod (9) is bent and fixedly connected to a fixing ring (901). A pressure spring (10) is fixedly connected to one side of the fixing ring (901). One end of the pressure spring (10) is fixedly connected to the inner wall of the pre-drainage pool (2).

3. The solid-liquid separation device for electroplating wastewater treatment according to claim 2, characterized in that, The inner wall of the pre-drainage tank (2) is fixedly connected to a guide plate (11), and the guide plate (11) and the transverse connecting rod (9) are slidably connected.

4. The solid-liquid separation device for electroplating wastewater treatment according to claim 1, characterized in that, A motor bracket (12) is fixedly connected to one side of the pre-drainage pool (2). A servo motor (13) is installed on the motor bracket (12). A bidirectional screw (14) is installed on the servo motor (13). Two movable blocks (15) are threadedly connected to the bidirectional screw (14). A vertical pressure rod (8) is fixed to the bottom of the movable block (15).

5. A solid-liquid separation device for electroplating wastewater treatment according to claim 4, characterized in that, An auxiliary plate (16) is fixedly connected to one side of the pre-drainage tank (2). A guide shaft (17) is fixedly connected between the auxiliary plate (16) and the motor bracket (12). The guide shaft (17) and the vertical pressure rod (8) are slidably connected.

6. The solid-liquid separation device for electroplating wastewater treatment according to claim 1, characterized in that, A drain pipe (201) is fixedly connected to one side of the pre-drainage tank (2), and an electric control valve (202) is installed on the drain pipe (201).

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