CN106630062A - Chemical adding device for sewage treatment - Google Patents

Abstract

The application of the present invention belongs to the field of sewage treatment, and specifically discloses a sewage treatment dosing device, including a medicine box, the bottom of the medicine box is provided with a discharge port, and also includes a sewage pipe, an air inlet pipe and a discharge assembly. One end of the air inlet pipe communicates with the sewage pipe, and the other end communicates with the outside world. The discharge assembly includes a wind wheel, a first transmission shaft, a driving wheel and a driven wheel meshing with the driving wheel. The wind wheel and the driving wheel pass through the The first transmission shaft is coaxially connected, the wind wheel is rotatably set in the air inlet pipe, the driven wheel is rotatably set at the bottom of the medicine box, the driven wheel is provided with a discharge port, and when the driven wheel rotates, the discharge The mouth is periodically connected with the discharge port. Compared with the traditional dosing device, the scheme has simple structure and low cost. At the same time, this scheme uses the flow of sewage itself to generate negative pressure, and then realizes the automatic dosing of the dosing device without other power mechanisms, effectively reducing energy consumption and saving energy.

Description

Sewage treatment dosing device

technical field

The invention belongs to the field of sewage treatment.

Background technique

Sewage treatment is a variety of economical, reasonable, scientific and effective processes for urban domestic sewage and industrial wastewater. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering.

Modern sewage treatment technology can be divided into primary, secondary and tertiary treatment according to the degree of treatment. Primary treatment mainly removes suspended solid pollutants in sewage, and most physical treatment methods can only meet the requirements of primary treatment. After primary treatment, BOD can generally be removed by about 30%, which does not meet the discharge standard. Primary treatment belongs to the pretreatment of secondary treatment. The secondary treatment mainly removes colloidal and dissolved organic pollutants (BOD, COD substances) in the sewage, and the removal rate can reach more than 90%, so that the organic pollutants can meet the discharge standards. Tertiary treatment, further treatment of refractory organic matter, nitrogen and phosphorus and other soluble inorganic substances that can lead to eutrophication of water bodies. The main methods are biological nitrogen and phosphorus removal, coagulation sedimentation, sand filtration, activated carbon adsorption, ion exchange and electroosmotic analysis.

In the secondary treatment, a dosing device is often used to add a flocculant to the sewage through the dosing device for decontamination treatment. The authorized invention patent with the patent application number CN201110221483.4 discloses a three-chamber dosing device for sewage treatment, including a dissolving chamber and a control box, and the interior of the dissolving chamber is divided into a dissolving chamber, a curing chamber and a The storage chamber has a feeding hopper on the dissolving chamber, and a water supply system and a dry powder dosing system are installed above the feeding hopper. A mixer controlled by a motor is installed in the dissolving chamber; a mixer and a liquid level gauge in the curing chamber are installed in the curing chamber. A liquid level gauge in the storage chamber is arranged in the storage chamber, and a metering pump is arranged at the bottom of the storage chamber. The chamber is connected at the bottom of the dissolving chamber, and the curing chamber and the storage chamber are connected at the top of the dissolving chamber. The bottom of the dissolving chamber is provided with a horizontal pipeline leading from the dissolving chamber to the storage chamber. An electromagnetic valve is arranged at one end, and the middle part of the horizontal pipeline is connected with the vertical pipeline in the curing chamber through a tee, and an electromagnetic valve is arranged on the vertical pipeline.

The sewage treatment effect of this scheme is good, and it is energy-saving and environment-friendly. However, its structure is too complex, and it is equipped with motors, mixers, solenoid valves and other equipment, which consumes a lot of energy, so it is not suitable for small and medium-sized enterprises.

Contents of the invention

The object of the present invention is to provide a sewage treatment dosing device to simplify the structure and reduce energy consumption.

In order to achieve the above object, the basic solution of the present invention provides a sewage treatment dosing device, including a medicine box, the bottom of the medicine box is provided with a discharge port, and also includes a sewage pipe, an air inlet pipe and a discharge assembly. One end of the air inlet pipe communicates with the sewage pipe, and the other end communicates with the outside world. The discharge assembly includes a wind wheel, a first transmission shaft, a driving wheel and a driven wheel meshing with the driving wheel. The wind wheel and the driving wheel pass through the The first transmission shaft is coaxially connected, the wind wheel is rotatably set in the air inlet pipe, the driven wheel is rotatably set at the bottom of the medicine box, the driven wheel is provided with a discharge port, and when the driven wheel rotates, the discharge The mouth is periodically connected with the discharge port.

The principle of this basic scheme is: the water inlet section of the sewage pipe is connected to a sewage pump or a sewage pool at a high place, and the sewage flows in the sewage pipe. When the sewage flows to the intake pipe, according to Bernoulli’s principle, negative pressure is generated in the intake pipe, and the outside air enters the intake pipe and drives the wind wheel to rotate, thereby driving the driving wheel to rotate, and then driving the driven wheel to rotate. When the discharge port on the driven wheel rotates to communicate with the discharge port, the medicine in the medicine box will leak out and enter the sewage.

The beneficial effect of this basic scheme is that: compared with the traditional dosing device, this scheme has simple structure and low cost. At the same time, this scheme uses the flow of sewage itself to generate negative pressure, and then realizes the automatic dosing of the dosing device without other power mechanisms, effectively reducing energy consumption and saving energy.

Solution 2: This is the optimization of the basic solution, and it also includes a feed pipe, one end of which is located directly below the discharge port, and the other end communicates with the sewage pipe. The setting of the feeding tube utilizes Bernoulli's principle to generate a negative pressure at the inlet of the feeding tube, thereby sucking the medicine leaked from the discharge port into the feeding tube. This has two effects. On the one hand, since the driven wheel is always in a rotating state, the medicine leaked from the medicine box is easily offset by the interference of the driven wheel, and the negative pressure generated by the feeding pipe is a good solution. the problem. On the other hand, under normal circumstances, the medicine in the medicine box has been accumulated for a long time and is easy to condense together, and it is easy to cause that even after the discharge port and the discharge port are connected, the medicine is difficult to leak from the medicine box, and the feed pipe produces Suction draws the medicine out of the medicine box.

Solution 3: This is the optimization of the basic solution. The sewage pipe includes a water inlet section and a drainage section connected to each other, and the drainage section is in a spiral shape. The spiral-shaped drainage section can fully mix the sewage and the medicine when it flows, so there is no need to set up additional mechanisms such as stirring devices, and the structure is simple, further reducing energy consumption.

Scheme 4: This is the optimization of the basic scheme, the bottom of the medicine box and the surface of the driven wheel are all coated with a wear-resistant layer. Since the bottom of the medicine box and the driven wheel are rubbed for a long time, the wear-resistant layer is provided to effectively prolong the cycle of replacing the driven wheel and the medicine box.

Description of drawings

Fig. 1 is a schematic structural view of a sewage treatment dosing device according to an embodiment of the present invention.

Fig. 2 is an enlarged view of point A in Fig. 1 .

detailed description

The present invention will be described in further detail below by means of specific embodiments:

The reference signs in the drawings of the description include: medicine box 10, discharge port 101, driven wheel 21, discharge port 211, driving wheel 22, second connecting shaft 23, first connecting shaft 24, wind wheel 25, sewage pipe 30, air intake pipe 40, feed pipe 50.

As shown in FIG. 1 , a sewage treatment dosing device includes a sewage pipe 30 , an air inlet pipe 40 , a discharge assembly and a medicine box 10 from right to left. The air intake pipe 40 is in the shape of 7, and the lower end of the air intake pipe 40 communicates with the sewage pipe 30, and the upper end extends to the outside to communicate with the outside world. The discharge assembly includes a wind wheel 25 , a first transmission shaft, a driving wheel 22 and a driven wheel 21 . A rotating bearing is installed in the intake pipe 40 , and the first transmission shaft is rotatably disposed in the rotating bearing, and extends upward to be coaxially connected with the driving wheel 22 . The wind wheel 25 is installed on the lower section of the first transmission shaft and is located in the intake pipe 40 . The driving wheel 22 is connected to the first drive shaft by splines.

As shown in FIG. 2 , it also includes a second transmission shaft. The lower end of the second transmission shaft is rotatably connected to the frame, and the upper end is fixedly connected to the driven wheel 21 through a spline. In this solution, the diameter of the driven wheel 21 is larger than the diameter of the driving wheel 22 , and the driving wheel 22 and the driven wheel 21 mesh with each other. Certainly, the diameter ratio of driving wheel 22 and driven wheel 21 can be set according to actual conditions, when the turbidity of sewage is many, then the diameter of small driven wheel 21 can be adjusted to leak more medicine.

In addition, a feeding pipe 50 is also provided, the upper end of the feeding pipe 50 is located directly below the discharge port 101 , and the lower end communicates with the sewage pipe 30 . The setting of the feeding tube 50 utilizes Bernoulli's principle to generate a negative pressure at the inlet of the feeding tube 50 , thereby sucking the drug leaked from the discharge port 211 into the feeding tube 50 . This has two effects. On the one hand, since the driven wheel 21 is always in a rotating state, the medicine leaked from the medicine box 10 is easily offset by the interference of the driven wheel 21, and the negative pressure generated by the feed pipe 50 is very large. Ok solved the problem. On the other hand, usually, the medicine in the medicine box 10 has been accumulated for a long time and is easy to condense together, so it is easy to cause even after the discharge port 101 and the discharge port 211 are communicated, the medicine is difficult to leak from the medicine box 10, and further The suction generated by the material tube 50 can suck the medicine out of the medicine box 10 .

In order to further reduce energy consumption, the drainage section of the sewage pipe 30 is set as a spiral section, which can facilitate the mixing of medicine and sewage. Simultaneously, in order to reduce the wearing and tearing of driven wheel 21 and medicine box 10, the bottom of medicine box 10 and the surface of driven wheel 21 are all coated with wear-resistant layer, to increase its service life.

During specific operation, the water inlet section of the sewage pipe 30 is connected to a sewage pump or a high place sewage pool, and the sewage flows in the sewage pipe 30 . When the sewage flows to the intake pipe 40, according to Bernoulli's principle, a negative pressure is generated in the intake pipe 40, and the outside air enters the intake pipe 40, and drives the wind wheel 25 to rotate, thereby driving the driving wheel 22 to rotate, and then driving The driving wheel 21 rotates. When the discharge port 211 on the driven wheel 21 rotates to communicate with the discharge port 101, the medicine in the medicine box 10 then leaks out and enters in the sewage.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (4)

1. Sewage treatment dosing device, comprising a medicine box, the bottom of the medicine box is provided with a discharge port, it is characterized in that it also includes a sewage pipe, an air inlet pipe and a material discharge assembly, and one end of the air inlet pipe is connected to the sewage The pipe is connected, and the other end is connected with the outside world. The discharge assembly includes a wind wheel, a first transmission shaft, a driving wheel and a driven wheel meshing with the driving wheel. The wind wheel and the driving wheel are coaxial through the first transmission shaft. connected, the wind wheel is rotated and set in the air inlet pipe, and the driven wheel is set at the bottom of the medicine box. The driven wheel is provided with a discharge port, and when the driven wheel rotates, the discharge port is periodically connected with the discharge port. The mouth is connected. 2 . The sewage treatment dosing device according to claim 1 , further comprising a feed pipe, one end of the feed pipe is located directly below the discharge port, and the other end communicates with the sewage pipe. 3 . 3. The sewage treatment dosing device according to claim 1, characterized in that: the sewage pipe includes a water inlet section and a drainage section connected to each other, and the drainage section is in a spiral shape. 4. The sewage treatment dosing device according to claim 1, characterized in that: both the bottom of the medicine box and the surface of the driven wheel are coated with a wear-resistant layer.