Chemical adding device for wastewater treatment in iron and steel industry

Abstract

The utility model is applicable to the technical field of wastewater treatment, and provides a steel industry wastewater treatment dosing device which comprises a wastewater conveying pipeline and a dosing component mounted on the wastewater conveying pipeline, the dosing component comprises a dosing pipeline, the dosing pipeline is fixedly mounted on the upper surface of the wastewater conveying pipeline, and the dosing pipeline is connected with the wastewater conveying pipeline. The upper end of the dosing pipeline is fixedly provided with a dosing hopper, the dosing pipeline is communicated with the interior of the dosing hopper, the top wall of the dosing hopper is rotationally connected with a rotating shaft, the lower end of the rotating shaft extends into the wastewater conveying pipeline through the dosing pipeline, and the outer surface of the rotating shaft is fixedly sleeved with an auger blade; the outer surface of the auger blade is in contact with the inner wall of the dosing pipeline, the mode that the auger blade is used for conveying the flocculant is adopted, the input amount of the flocculant can be accurately controlled, manual control and monitoring are not needed, and the working intensity of workers and the operation difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and more specifically, to a wastewater treatment and dosing device for the steel industry. Background Art

[0002] Industrial wastewater treatment is the use of physical, chemical and biological methods to treat wastewater. It is a wastewater treatment method that separates and removes pollutants in dissolved and colloidal states in wastewater or converts them into harmless substances through chemical reactions and mass transfer. In the chemical treatment method, the treatment units based on the addition of chemicals to produce chemical reactions are: coagulation, neutralization, oxidation-reduction, etc., so a dosing device is needed during treatment.

[0003] As the existing related patent was retrieved: CN216073095U, which discloses an automatic dosing device for treating wastewater in the steel industry. The prior art rotates a threaded rod, and through the threaded meshing effect between the threaded rod and the fixed rod, the threaded rod drives the flow limiting block to move. When the threaded rod is rotated forward, the flow limiting block moves downward, so that the lower end of the flow limiting block enters the installation pipe, and the space for the agent to enter the installation pipe is compressed until the flow limiting block blocks the installation pipe. The threaded rod is reversed, and the flow limiting block moves upward, thereby reopening the blocked installation pipe, so as to control the flow rate of the agent entering the installation pipe per unit time.

[0004] However, the inventors have found that the prior art has the following problems during use: in the prior art, after the flow limiting block is moved upward, the flow rate of the flocculant in the dosing hopper entering the installation pipe cannot be controlled. Because the existing flocculants are generally granular, the flocculant in the dosing hopper is squeezed by the inner wall during the process of flowing to the installation pipe, and there is a problem of blockage. This will cause the flow rate of the flocculant flowing into the installation pipe to be uncontrolled, so the flocculant cannot be accurately transported. At the same time, the prior art requires manual monitoring, which increases the workload and difficulty of operation of the staff. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a steel industry wastewater treatment dosing device which can accurately control the amount of flocculant input, does not require manual operation and monitoring, and reduces the workload and operating difficulty of the staff.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dosing device for treating wastewater in the steel industry comprises a wastewater conveying pipeline and a dosing component installed on the wastewater conveying pipeline, wherein the dosing component comprises a dosing pipeline, the dosing pipeline is fixedly installed on the upper surface of the wastewater conveying pipeline, and the lower end thereof penetrates into the wastewater conveying pipeline, a dosing hopper is fixedly installed on the upper end of the dosing pipeline, the dosing pipeline is communicated with the inside of the dosing hopper, a rotating shaft is rotatably connected to the top wall of the dosing hopper, the lower end of the rotating shaft extends into the wastewater conveying pipeline through the dosing pipeline, an auger blade is fixedly sleeved on the outer surface of the rotating shaft, and the outer surface of the auger blade contacts the inner wall of the dosing pipeline.

[0008] The utility model is further configured as follows: a flow meter is fixedly installed on the wastewater conveying pipeline, and a detection end of the flow meter penetrates into the wastewater conveying pipeline.

[0009] The utility model is further configured as follows: a servo motor is fixedly mounted on the upper surface of the dosing hopper, the lower end of the servo motor rotates and penetrates into the dosing hopper and is fixedly connected to the upper end of the rotating shaft, and the servo motor is electrically connected to the flow meter.

[0010] The utility model is further configured as follows: a feeding hopper is fixedly installed on the upper surface of the medicine adding hopper, and the feeding hopper is communicated with the inside of the medicine adding hopper.

[0011] The utility model is further configured as follows: one end of the rotating shaft located in the wastewater conveying pipeline is fixedly connected with a diffusion disk, and the upper surface of the diffusion disk is fixedly connected with a plurality of baffles arranged in a circumferential array.

[0012] The utility model is further configured as follows: a plurality of grooves are opened on the diffusion disk, the grooves are arranged between two adjacent baffles, a rotating plate is arranged in the groove, the side of the rotating plate close to the rotating axis is configured as a semicircle, the rotating shafts are rotatably connected to the opposite side surfaces of the rotating plate, and the other end of the rotating shaft is fixedly connected to the inner wall of the groove.

[0013] The utility model is further configured as follows: a torsion spring is arranged between the rotating shaft and the rotating plate, one end of the torsion spring is fixed to the rotating shaft, and the other end is fixed to the rotating plate.

[0014] The utility model is further configured as follows: an extrusion rod is fixedly installed on the upper surface of the rotating plate, an arc-shaped convex block is fixedly connected to the top wall of the wastewater conveying pipeline, and the upper end of the extrusion rod contacts the arc surface of the arc-shaped convex block.

[0015] The advantages of the utility model are:

[0016] Firstly, the utility model adopts the method of conveying flocculants by auger blades, which can accurately control the amount of flocculants input, does not require manual control and monitoring, and reduces the work intensity and operation difficulty of the staff.

[0017] Secondly, the utility model is provided with a diffusion disk, so that the flocculant falling on the diffusion disk will be thrown into the wastewater conveying pipe under the action of centrifugal force, further increasing the flocculant feeding range, so that the flocculant can better contact with the wastewater in the wastewater conveying pipe, and the wastewater purification effect in the wastewater conveying pipe can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a dosing device for treating wastewater in the steel industry according to the utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the dosing pipeline of the utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 It is a side plan view of the internal structure of the groove of the utility model.

[0022] In the figure: 1. wastewater conveying pipeline; 2. flow meter; 3. dosing component; 301. dosing pipeline; 302. dosing hopper; 303. feeding hopper; 304. rotating shaft; 305. servo motor; 306. auger blade; 307. diffusion disk; 308. baffle; 309. groove; 310. rotating plate; 311. extrusion rod; 312. arc-shaped protrusion; 313. rotating shaft; 314. torsion spring. DETAILED DESCRIPTION

[0023] See also Figure 1-4 , the utility model provides the following technical solutions:

[0024] Specifically, it refers to a dosing device for treating wastewater in the steel industry, including a wastewater conveying pipeline 1 and a dosing component 3 installed on the wastewater conveying pipeline 1. A flow meter 2 is fixedly installed on the wastewater conveying pipeline 1. The detection end of the flow meter 2 penetrates into the wastewater conveying pipeline 1 to monitor the flow rate of sewage flowing into the wastewater conveying pipeline 1.

[0025] Specifically, the dosing component 3 includes a dosing pipe 301, which is fixedly installed on the upper surface of the wastewater conveying pipe 1, and the lower end of the dosing pipe 301 passes through the wastewater conveying pipe 1. A dosing bucket 302 is fixedly installed on the upper end of the dosing pipe 301, and the dosing pipe 301 is connected to the inside of the dosing bucket 302. The top wall of the dosing bucket 302 is rotatably connected to a rotating shaft 304, and the lower end of the rotating shaft 304 extends into the wastewater conveying pipe 1 through the dosing pipe 301. The outer surface of the rotating shaft 304 is fixedly sleeved with an auger blade 306, and the outer surface of the auger blade 306 contacts the inner wall of the dosing pipe 301. The upper surface of the dosing bucket 302 is fixedly sleeved with an auger blade 306. A servo motor 305 is fixedly installed, and the lower end of the servo motor 305 rotates and penetrates into the dosing hopper 302, and is fixedly connected to the upper end of the rotating shaft 304. When it is necessary to transport flocculant to the wastewater conveying pipe 1, the servo motor 305 rotates and synchronously drives the rotating shaft 304 to rotate, so that the auger blade 306 can transport the flocculant in the feeding hopper 302 to the dosing pipe 301, and finally drop it into the wastewater conveying pipe 1. The above-mentioned method of transporting flocculant by the auger blade 306 can accurately control the amount of flocculant input, without the need for manual control and monitoring, reducing the workload and difficulty of operation of the staff.

[0026] Specifically, the servo motor 305 is electrically connected to the flow meter 2, so the servo motor 305 can be set according to the flow rate of wastewater flowing into the wastewater conveying pipe 1 monitored by the flow meter 2. When the wastewater flow in the wastewater conveying pipe 1 reaches a specified value, the servo motor 305 starts synchronously, so that the flocculant can be accurately added into the wastewater conveying pipe 1 to purify the industrial wastewater.

[0027] Specifically, a feeding hopper 303 is fixedly mounted on the upper surface of the dosing hopper 302 , and the feeding hopper 303 is connected to the inside of the dosing hopper 302 , so that flocculant can be fed into the dosing hopper 302 through the feeding hopper 303 , thereby replenishing the flocculant in the dosing hopper 302 .

[0028] Specifically, one end of the rotating shaft 304 located in the wastewater conveying pipe 1 is fixedly connected to a diffusion disk 307, and the upper surface of the diffusion disk 307 is fixedly connected to a plurality of baffles 308 arranged in a circular array. When the auger blades 306 convey the flocculants out of the dosing pipe 301, the flocculants will fall onto the diffusion disk 307. Since the auger blades 306 need to rotate the rotating shaft 304 when conveying the flocculants, the diffusion disk 307 will rotate synchronously with the rotating shaft 304. Therefore, the flocculants on the diffusion disk 307 will be thrown into the wastewater conveying pipe 1 under the action of centrifugal force, further increasing the flocculant feeding range, allowing the flocculants to better contact with the wastewater in the wastewater conveying pipe 1, and ensuring the wastewater purification effect in the wastewater conveying pipe 1.

[0029] Specifically, a plurality of grooves 309 are provided on the diffusion disk 307, and the grooves 309 are provided between two adjacent baffles 308. A rotating plate 310 is provided in the grooves 309. The side of the rotating plate 310 close to the rotating shaft 304 is set in a semicircular shape. The rotating plate 310 has rotating shafts 313 rotatably connected on the opposite side surfaces. The other end of the rotating shaft 313 is fixedly connected to the inner wall of the groove 309. A torsion spring 314 is provided between the rotating shaft 313 and the rotating plate 310. One end of the torsion spring 314 is fixed to the rotating shaft 313, and the other end is fixed to the rotating plate 310, so that the rotating plate 310 is matched with the groove 309 under the action of the torsion spring 314, so that the flocculant falls onto the rotating plate 310.

[0030] Specifically, an extrusion rod 311 is fixedly installed on the upper surface of the rotating plate 310, and an arc-shaped protrusion 312 is fixedly connected to the top wall of the wastewater conveying pipe 1. The upper end of the extrusion rod 311 contacts the arc surface of the arc-shaped protrusion 312. When the rotating shaft 304 rotates, the extrusion rod 311 rotates synchronously with the rotating shaft 304. When the extrusion rod 311 contacts the arc surface of the arc-shaped protrusion 312, the arc surface of the arc-shaped protrusion 312 will squeeze the extrusion rod 311, so that the extrusion rod 311 pushes the rotating plate 310 to rotate downward, and at the same time the torsion spring 314 is deformed, which further improves the diffusion effect of the flocculant.

[0031] The working principle of the iron and steel industry wastewater treatment dosing device provided by the utility model is as follows: the wastewater inflow flow in the wastewater conveying pipeline 1 is monitored by the flow meter 2. When the wastewater flow in the wastewater conveying pipeline 1 reaches a specified value, the servo motor 305 is started synchronously and the rotating shaft 304 is driven to rotate synchronously, so that the auger blades 306 can convey the flocculant in the feeding hopper 302 to the dosing pipeline 301. These flocculants fall onto the diffusion disk 307, so that the flocculants on the diffusion disk 307 are thrown out into the wastewater conveying pipeline 1 under the action of centrifugal force.

Claims

1. A dosing device for treating wastewater in the steel industry, comprising a wastewater delivery pipeline (1) and a dosing assembly (3) installed on the wastewater delivery pipeline (1), characterized in that: The dosing assembly (3) comprises a dosing pipe (301), which is fixedly mounted on the upper surface of the wastewater conveying pipe (1), and the lower end of which penetrates into the wastewater conveying pipe (1); a dosing hopper (302) is fixedly mounted on the upper end of the dosing pipe (301); the dosing pipe (301) is connected to the inside of the dosing hopper (302); a rotating shaft (304) is rotatably connected to the top wall of the dosing hopper (302); the lower end of the rotating shaft (304) extends into the wastewater conveying pipe (1) through the dosing pipe (301); an auger blade (306) is fixedly sleeved on the outer surface of the rotating shaft (304); the outer surface of the auger blade (306) contacts the inner wall of the dosing pipe (301).

2. A dosing device for treating wastewater in the steel industry according to claim 1, characterized in that: A flow meter (2) is fixedly mounted on the wastewater conveying pipeline (1), and a detection end of the flow meter (2) penetrates into the wastewater conveying pipeline (1).

3. A dosing device for treating wastewater in the steel industry according to claim 2, characterized in that: A servo motor (305) is fixedly mounted on the upper surface of the dosing hopper (302). The lower end of the servo motor (305) rotates and penetrates into the dosing hopper (302) and is fixedly connected to the upper end of the rotating shaft (304). The servo motor (305) is electrically connected to the flow meter (2).

4. A dosing device for treating wastewater in the steel industry according to claim 1, characterized in that: A feeding hopper (303) is fixedly mounted on the upper surface of the medicine adding hopper (302), and the feeding hopper (303) is connected to the inside of the medicine adding hopper (302).

5. A dosing device for treating wastewater in the steel industry according to claim 1, characterized in that: One end of the rotating shaft (304) located in the wastewater conveying pipeline (1) is fixedly connected to a diffusion disk (307), and the upper surface of the diffusion disk (307) is fixedly connected to a plurality of baffles (308) arranged in a circular array.

6. A dosing device for treating wastewater in the steel industry according to claim 5, characterized in that: The diffusion disk (307) is provided with a plurality of grooves (309), wherein the grooves (309) are provided between two adjacent baffles (308), and a rotating plate (310) is provided in the grooves (309). The rotating plate (310) is provided in a semicircular shape on one side close to the rotating shaft (304), and rotating shafts (313) are rotatably connected on two opposite side surfaces of the rotating plate (310), and the other end of the rotating shaft (313) is fixedly connected to the inner wall of the groove (309).

7. A dosing device for treating wastewater in the steel industry according to claim 6, characterized in that: A torsion spring (314) is provided between the rotating shaft (313) and the rotating plate (310), one end of the torsion spring (314) is fixed to the rotating shaft (313), and the other end of the torsion spring (314) is fixed to the rotating plate (310).

8. A dosing device for treating wastewater in the steel industry according to claim 7, characterized in that: A squeezing rod (311) is fixedly mounted on the upper surface of the rotating plate (310), an arc-shaped protrusion (312) is fixedly connected to the top wall of the wastewater conveying pipe (1), and the upper end of the squeezing rod (311) contacts the arc surface of the arc-shaped protrusion (312).

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