CN118702342A - A sewage treatment equipment - Google Patents

Abstract

The invention discloses a sewage treatment equipment, which relates to the technical field of sewage treatment; specifically, it comprises a sedimentation tank, a primary filtration adsorption tank, a reaction tank and a neutralization fine filtration part which are connected in sequence, the neutralization fine filtration part comprises a treatment pipe, an acid-base detector arranged on the downstream side wall of the treatment pipe, a neutralization liquid supply mechanism arranged on the upstream side wall of the treatment pipe, and a fine filtration mechanism arranged inside the upstream of the treatment pipe, the fine filtration mechanism is located upstream of the neutralization liquid supply mechanism, the neutralization liquid supply mechanism comprises an acid tank and an alkali tank, and the liquid outlets of the acid tank and the alkali tank are connected with a three-way opening valve. The invention arranges an acid tank and an alkali tank, uses a delivery pump for delivery, and then combines the acid-base detector to sense the acidity and alkalinity of the sewage in the treatment pipe, thereby coordinating with the position of the valve core, can achieve neutralization, and can also specifically adjust the amount of acid and alkali according to the specific acidity and alkalinity strength, thereby increasing the reliability of neutralization.

Description

A sewage treatment equipment

Technical Field

The present invention relates to the technical field of sewage treatment, and in particular to sewage treatment equipment.

Background Art

Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people.

The Chinese patent publication number CN108947104A discloses sewage treatment equipment, including a sedimentation tank, a filtration and adsorption tank, an oxidation tank, a disinfection tank and a clean water tank connected in sequence; wherein the filtration and adsorption tank includes a tank body, a filter screen, an activated carbon layer, a sand and gravel layer and a stone layer, a water outlet is arranged at the bottom of the tank body to be connected to the oxidation tank, a water inlet is arranged at the top of the tank body to be connected to the sedimentation tank, the filter screen is arranged on the top of the water outlet, and an activated carbon layer, a sand and gravel layer and a stone layer are arranged in sequence on the top of the filter screen.

The above patent has the following shortcomings: since acidic or alkaline substances are introduced during the oxidation and disinfection process, the purified water will also be acidic or alkaline, resulting in poor treatment effect.

To this end, the present invention provides a sewage treatment device.

Summary of the invention

The purpose of the present invention is to solve the shortcomings of the prior art and to propose a sewage treatment device.

In order to achieve the above object, the present invention adopts the following technical solutions:

A sewage treatment device comprises a sedimentation tank, a primary filtration adsorption tank, a reaction tank and a neutralization and fine filtration part which are connected in sequence.

The neutralization and fine filtration section comprises a treatment tube, an acid-base detector arranged on the downstream side wall of the treatment tube, a neutralization liquid supply mechanism arranged on the upstream side wall of the treatment tube, and a fine filtration mechanism arranged inside the upstream of the treatment tube, wherein the fine filtration mechanism is located upstream of the neutralization liquid supply mechanism;

The neutralizing liquid supply mechanism comprises an acid liquid tank and an alkali liquid tank, the liquid outlets of the acid liquid tank and the alkali liquid tank are connected with a three-way opening valve, the liquid outlet of the three-way opening valve is connected with a three-way pipe, and the three-way pipe is connected to the side wall of the treatment pipe through a delivery pump;

The three-way opening valve comprises a valve housing and a valve core slidably connected to the inner wall of the valve housing, the inner wall of the valve housing is provided with a "Y"-shaped flow channel, the inner wall of the valve core is provided with two through holes matching the "Y"-shaped flow channel, and an electromagnet B is fixed to one side of the valve core by bolts, an electromagnet A is fixed to the inner wall of the valve housing by bolts, and the electromagnet B is arranged opposite to the electromagnet A;

The outer wall of the valve core is sleeved with a sealing ring, which fits the inside of the valve housing;

The acid-base detector includes a reference electrode, a hydrogen ion selective electrode and a magnetic shielding cover fixed to the side wall of the processing tube through a connecting block. The magnetic shielding cover is fixed to the side wall of the processing tube by bolts. An iron core is fixed to the inner wall of the magnetic shielding cover. Coil A and coil B are respectively wound around the two ends of the iron core. The two ends of coil B are electrically connected to the reference electrode and the hydrogen ion selective electrode through an inverter. The two ends of coil B are electrically connected to electromagnet A and electromagnet B through a group of sliding contact components, and the current directions of electromagnet A and electromagnet B are opposite.

Preferably, the two groups of sliding contact components are arranged symmetrically, a guide slide bar is fixedly provided on the inner wall of the iron core, and the sliding contact component comprises a guide slide bar and a magnetic block slidably connected to the outer wall of the guide slide bar.

Furthermore: a spring contact is fixed to the side wall of the magnetic block, the spring contact contacts and is electrically connected to the side wall of the coil B, an insulating spring is buckled to the side wall of the magnetic block, and the other end of the insulating spring is buckled to the side wall of the iron core.

On the basis of the above scheme: the fine filtration mechanism includes a filter plate fixed to the inner wall of the processing tube and a scraper rotatably connected to the filter plate through a drive shaft, and the scraper is attached to the filtration surface of the filter plate, and a drive assembly is provided at the end of the drive shaft.

A better solution among the above solutions is that: a leakage groove is opened on the bottom outer wall of the processing pipe located upstream of the filter plate, and a dirt collecting box is fixed to the bottom outer wall of the leakage groove by bolts.

As a further solution of the present invention: the scraper includes a connecting plate fixed to the end of the driving shaft and multiple groups of rollers rotatably connected to the connecting plate through connecting shafts, and the outer walls of two of the rollers in one group are equipped with connecting belts.

At the same time, a uniform conveying plate is fixed on the outer wall of the connecting belt, a fixing ring is fixed on the side wall of the filter plate, and the rotating roller and the connecting shaft are matched through synchronous belt transmission.

As a preferred embodiment of the present invention, the driving assembly comprises a slip ring slidably fitted on the outer wall of the driving shaft and a plurality of turbine blades rotatably connected to the outer wall of the slip ring via a rotating disk.

At the same time, an elastic body is arranged on one side of the driving shaft, and the slip ring is connected to the end of the driving shaft through the elastic body.

As a more optimal solution of the present invention: a limiting groove is opened on the outer side of the driving shaft, and the turntable is movably limited and matched with the inner wall of the limiting groove through two rollers welded on the inner wall of the turntable, and the limiting groove is a combination structure of an arc and a straight line.

The beneficial effects of the present invention are:

1. By setting up an acid tank and an alkali tank and using a delivery pump for delivery, and combining the acid-base detector to sense the pH of the sewage in the treatment pipe, and thus coordinating the position of the valve core, it is possible to achieve neutralization while adjusting the amount of acid and alkali according to the specific acidity and alkalinity, thereby increasing the reliability of neutralization.

2. First, the reference electrode and the hydrogen ion selective electrode are used to sense the hydrogen ion concentration, and then the characteristic of sensing and generating electromotive force can be used to drive electromagnet A and electromagnet B, thereby achieving the effect of both "sensing" and "driving". At the same time, combined with the working characteristics of the three-way opening valve, the automatic switching of the acid tank and the alkali tank and the adaptive adjustment of the flow channel size can be realized.

3. By utilizing the alternating magnetic field generated when the iron core is magnetically conductive, the magnetic attraction force can be used to change the position of the magnetic attraction block, so that the matching position of the spring contact and the coil B changes according to the size of the magnetic force. When the electromotive force of coil A changes, the induced electromotive force of coil B also changes, and the change amplitude is large, so that electromagnet A and electromagnet B have a relatively large electromotive force range, and thus the state of the three-way opening valve can be controlled more accurately, increasing the accuracy of neutralization.

4. The scraper is used to remove the dirt on the surface of the filter plate to prevent clogging. On this basis, by setting the connecting shaft, fixed ring, synchronous belt, roller, connecting belt and conveying plate, the conveying plate can be moved by the rotation of the connecting plate while cleaning, so that the dirt can be pushed outward, which can better allow the dirt to enter the dirt collection box for collection.

5. By setting the turbine blades, the water flow force can be used to drive the drive shaft to rotate, that is, a power source arrangement is provided for the rotation of the drive shaft. In addition, through the coordination of the setting of the limit groove, the limit column and the elastic body, the "deflection" angle of the turbine blade is related to the water flow speed, thereby realizing negative feedback regulation, so that the driving speed of the turbine blade to the drive shaft can be relatively "moderate", ensuring the reliability of dirt removal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall layout structure of a sewage treatment equipment proposed by the present invention;

FIG2 is a schematic structural diagram of a neutralization and fine filtration unit of a sewage treatment device proposed by the present invention;

FIG3 is a schematic structural diagram of a neutralization liquid supply mechanism for a sewage treatment device proposed by the present invention;

FIG4 is a schematic cross-sectional view of a three-way opening valve of a sewage treatment equipment proposed by the present invention;

FIG5 is a schematic cross-sectional view of an acid-base detector for a sewage treatment device according to the present invention;

FIG6 is a schematic diagram of the internal structure of an acid-base detector for a sewage treatment device proposed by the present invention;

FIG7 is a schematic structural diagram of a fine filtration mechanism of a sewage treatment device proposed by the present invention;

FIG8 is a schematic diagram of a cross-sectional structure of a scraper of a sewage treatment equipment proposed by the present invention;

FIG9 is a second schematic cross-sectional structural diagram of a scraper of a sewage treatment equipment proposed by the present invention;

FIG10 is a schematic diagram of the structure of a driving component of a sewage treatment device proposed by the present invention;

FIG11 is a schematic cross-sectional view of a driving assembly of a sewage treatment device proposed by the present invention;

FIG. 12 is a schematic diagram of the limit groove structure of a sewage treatment device proposed by the present invention.

In the figure: 1, sedimentation tank; 2, primary filtration adsorption tank; 3, reaction tank; 4, neutralization and fine filtration unit; 5, treatment tube; 6, acid-base detector; 7, neutralization liquid supply mechanism; 8, fine filtration mechanism; 9, acid tank; 10, alkali tank; 11, three-way opening valve; 12, three-way pipe; 13, delivery pump; 14, valve housing; 15, spring 1; 16, valve core; 17, through hole; 18, sealing ring; 19, electromagnet A; 20, electromagnet B; 21, "Y" type flow channel; 22, connecting block; 23, reference electrode; 24, hydrogen ion selective electrode; 25, coil A; 26. Coil B; 27. Sliding contact assembly; 28. Magnetic shielding cover; 29. Iron core; 30. Spring contact; 31. Insulating spring; 32. Guide slide rod; 33. Magnetic block; 34. Filter plate; 35. Scraper; 36. Leakage groove; 37. Dirt collecting box; 38. Drive assembly; 39. Drive shaft; 40. Connecting plate; 41. Connecting shaft; 42. Roller; 43. Fixed ring; 44. Connecting belt; 45. Conveyor plate; 46. Limiting groove; 47. Synchronous belt; 48. Slip ring; 49. Turbine blade; 50. Turntable; 51. Elastomer; 52. Limiting column.

DETAILED DESCRIPTION

The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

Embodiment 1:

A sewage treatment equipment, as shown in Figures 1-12, includes a sedimentation tank 1, a primary filtration adsorption tank 2, a reaction tank 3 and a neutralization and fine filtration part 4 connected in sequence. In this embodiment, the specific structure of the sedimentation tank 1, the primary filtration adsorption tank 2, and the reaction tank 3 is not limited. They are conventional means in the field of sewage treatment. For example, the Chinese patent publication number CN108947104A has disclosed the specific structure and method, which will not be repeated in this embodiment.

The neutralization and fine filtration section 4 includes a processing tube 5, an acid-base detector 6 arranged on the downstream side wall of the processing tube 5, a neutralization liquid supply mechanism 7 arranged on the upstream side wall of the processing tube 5, and a fine filtration mechanism 8 arranged inside the upstream of the processing tube 5, and the fine filtration mechanism 8 is located upstream of the neutralization liquid supply mechanism 7.

The neutralizing liquid supply mechanism 7 includes an acid liquid tank 9 and an alkali liquid tank 10, the liquid outlets of the acid liquid tank 9 and the alkali liquid tank 10 are connected with a three-way opening valve 11, the liquid outlet of the three-way opening valve 11 is connected with a three-way pipe 12, and the three-way pipe 12 is connected to the side wall of the treatment tube 5 through a delivery pump 13.

The three-way opening valve 11 includes a valve housing 14 and a valve core 16 slidably connected to the inner wall of the valve housing 14, the inner wall of the valve housing 14 is provided with a "Y"-shaped flow channel 21, the inner wall of the valve core 16 is provided with two through holes 17 that cooperate with the "Y"-shaped flow channel 21, and one side of the valve core 16 is fixed with an electromagnet B20 by bolts, and the inner wall of the valve housing 14 is fixed with an electromagnet A19 by bolts, and the electromagnet B20 is arranged opposite to the electromagnet A19.

The outer wall of the valve core 16 is sleeved with a sealing ring 18 , which is fitted into the interior of the valve housing 14 .

The acid-base detector 6 includes a reference electrode 23, a hydrogen ion selective electrode 24 and a magnetic shielding cover 28 fixed to the side wall of the processing tube 5 through a connecting block 22. The magnetic shielding cover 28 is fixed to the side wall of the processing tube 5 by bolts. An iron core 29 is fixed to the inner wall of the magnetic shielding cover 28. Coil A25 and coil B26 are respectively wound around the two ends of the iron core 29. The two ends of the coil B26 are electrically connected to the reference electrode 23 and the hydrogen ion selective electrode 24 through an inverter. The two ends of the coil B26 are electrically connected to the electromagnet A19 and the electromagnet B20 through a group of sliding contact components 27, and the current directions of the electromagnet A19 and the electromagnet B20 are opposite.

When the device is in use, sewage is treated by sedimentation tank 1, primary filtration adsorption tank 2, and reaction tank 3, and then enters the upstream position of treatment pipe 5 after treatment, and then is filtered by fine filtration mechanism 8. After filtration, the filtrate passes through reference electrode 23 and hydrogen ion selective electrode 24, and reference electrode 23 senses hydrogen ions in the filtrate, so that electromotive force is formed between reference electrode 23 and hydrogen ion selective electrode 24, and the electromotive force is converted into alternating current by inverter and applied to coil A25, so that alternating magnetic flux is generated in iron core 29, and induced electromotive force is generated in coil B26, so that the induced electromotive force is applied to electromagnet A19 and electromagnet B20. When the water is alkaline, the concentration of hydrogen ions is low. At this time, valve core 16 is acted on by the elastic force of spring 15 so that through hole 17 is connected to acid tank 9. When the concentration of hydrogen ions in sewage is high, the valve core 16 is connected to acid tank 9 by the elastic force of spring 15. As the degree gradually increases and the alkalinity decreases, the induced electromotive force in the electromagnet A19 and the electromagnet B20 increases, and the magnetic repulsion increases, thereby moving the valve core 16, so that the through hole 17 connected to the acid liquid tank 9 and the "Y"-shaped flow channel 21 are staggered, and the overlapping area is reduced, thereby throttling the acid liquid and reducing the flow rate, until the solution reaches neutrality, the two through holes 17 are not connected to the "Y"-shaped flow channel 21, and then when the hydrogen ion concentration gradually increases, the induced electromotive force of the electromagnet A19 and the electromagnet B20 continues to increase, and the valve core 16 continues to move, so that the through hole 17 is connected to the alkali liquid tank 10, so that the alkali liquid tank 10 flows into the treatment tube 5 for neutralization, and the hydrogen ion concentration continues to rise. When the acidity increases, the overlapping area between the through hole 17 and the "Y"-shaped flow channel 21 increases, thereby increasing the flow channel area of the alkali liquid.

This device, by setting up an acid tank 9 and an alkali tank 10, uses a delivery pump 13 for delivery, and then combines the acid-base detector 6 to sense the acidity and alkalinity of the sewage in the treatment pipe 5, thereby coordinating the position of the valve core 16, can achieve neutralization, and can also specifically adjust the amount of acid and alkali solution according to the specific acidity and alkalinity strength, thereby increasing the reliability of neutralization.

In addition, the device uses the reference electrode 23 and the hydrogen ion selective electrode 24 to sense the hydrogen ion concentration, and then uses the characteristics of the sensing to generate electromotive force, and the generated electromotive force is used to drive the electromagnet A19 and the electromagnet B20, thereby achieving both "sensing" and "driving" effects. At the same time, combined with the working characteristics of the three-way opening valve 11, it can realize the automatic switching of the acid tank 9 and the alkali tank 10 and the adaptive adjustment of the flow channel size.

In order to solve the control effect problem; as shown in Figure 6, the two groups of sliding contact components 27 are arranged symmetrically, and a guide slide rod 32 is fixedly provided on the inner wall of the iron core 29. The sliding contact component 27 includes a guide slide rod 32 and a magnetic block 33 slidably connected to the outer wall of the guide slide rod 32. The side wall of the magnetic block 33 is fixed with a spring contact 30, and the spring contact 30 contacts and is electrically connected to the side wall of the coil B26. The side wall of the magnetic block 33 is buckled with an insulating spring 31, and the other end of the insulating spring 31 is buckled to the side wall of the iron core 29.

Since an alternating magnetic field is generated in the iron core 29, the alternating magnetic field will apply an equivalent magnetic field to the magnetic block 33, and the field strength of the equivalent magnetic field is related to the field strength of the alternating magnetic field. The equivalent magnetic field will be applied to the magnetic block 33, so that the magnetic block 33 overcomes the elastic force of the insulating spring 31 and moves, thereby changing the matching position of the spring contact 30 and the coil B26, thereby changing the number of turns of the coil B26 connected to the circuit, so that the change in the electromotive force between the reference electrode 23 and the hydrogen ion selective electrode 24 can be amplified and then applied to the electromagnet A19 and the electromagnet B20.

This device, by utilizing the alternating magnetic field generated when the iron core 29 is magnetically conductive, can use the magnetic attraction force to change the position of the magnetic attraction block 33, so that the matching position of the spring contact 30 and the coil B26 changes according to the magnitude of the magnetic force, so that when the electromotive force of the coil A25 changes, the induced electromotive force of the coil B26 also changes, and the change amplitude is large, so that the electromagnet A19 and the electromagnet B20 have a relatively large electromotive force range, so that the state of the three-way opening valve 11 can be controlled more accurately, and the accuracy of neutralization is increased.

In order to solve the filtering problem; as shown in Figures 1, 7-12, the fine filtration mechanism 8 includes a filter plate 34 fixed to the inner wall of the processing tube 5 and a scraper 35 rotatably connected to the filter plate 34 through a drive shaft 39, and the scraper 35 is attached to the filtering surface of the filter plate 34, a drive assembly 38 is provided at the end of the drive shaft 39, and a leakage groove 36 is opened on the bottom outer wall of the processing tube 5 located upstream of the filter plate 34, and a dirt collecting box 37 is fixed to the bottom outer wall of the leakage groove 36 by bolts.

When sewage flows through the filter plate 34 , dirt therein will be intercepted by the filter plate 34 , and as the sewage flows, the drive assembly 38 will drive the drive shaft 39 to rotate, thereby scraping the dirt on the surface of the filter plate 34 and dropping it into the dirt collecting box 37 for collection.

The scraper 35 includes a connecting plate 40 fixed to the end of the driving shaft 39 and a plurality of groups of rollers 42 rotatably connected to the connecting plate 40 via connecting shafts 41 , and outer walls of two of the rollers 42 in one group are equipped with connecting belts 44 .

A uniform conveying plate 45 is fixed to the outer wall of the connecting belt 44 , a fixing ring 43 is fixed to the side wall of the filter plate 34 , and the rotating roller 42 and the connecting shaft 41 are matched through a synchronous belt 47 .

When the driving shaft 39 rotates, it can drive the connecting plate 40 to rotate, thereby causing the connecting shaft 41 and the fixing ring 43 to rotate, so that the connecting shaft 41 rotates under the connection of the synchronous belt 47, thereby driving the roller 42 to rotate, so that the connecting belt 44 moves, so that during the entire rotation process, the entire scraper 35 is used to scrape off the dirt on the surface of the filter plate 34, and the conveying plate 45 pushes the scraped dirt to the outside.

The device, by providing a scraper 35, can remove dirt on the surface of the filter plate 34 to prevent clogging, and on this basis, by providing a combination of a connecting shaft 41, a fixing ring 43, a synchronous belt 47 and a combination of a roller 42, a connecting belt 44, and a conveying plate 45, the conveying plate 45 can be moved by the rotation of the connecting plate 40 while cleaning, so that the dirt can be pushed outward, and the dirt can be better collected in the dirt collecting box 37.

When the present embodiment is in use, the sewage is treated by the sedimentation tank 1, the primary filtration adsorption tank 2, and the reaction tank 3, and then enters the upstream position of the treatment pipe 5 after treatment, and then is filtered by the fine filtration mechanism 8. After filtration, the filtrate passes through the reference electrode 23 and the hydrogen ion selective electrode 24, and the reference electrode 23 senses the hydrogen ions in the filtrate, so that an electromotive force is formed between the reference electrode 23 and the hydrogen ion selective electrode 24, and the electromotive force is converted into alternating current by the inverter and applied to the coil A25, thereby generating an alternating magnetic flux in the iron core 29, and an induced electromotive force is generated in the coil B26, so that the induced electromotive force is applied to the electromagnet A19 and the electromagnet B20. When the water is alkaline, the hydrogen ion concentration is low. At this time, the valve core 16 is subjected to the elastic force of the spring 15 so that the through hole 17 is connected to the acid tank 9. When the hydrogen ions in the sewage When the concentration gradually increases and the alkalinity decreases, the induced electromotive force in the electromagnet A19 and the electromagnet B20 increases, and the magnetic repulsion increases, so that the valve core 16 moves, so that the through hole 17 connected to the acid tank 9 is staggered with the "Y"-shaped flow channel 21, and the overlapping area is reduced, thereby throttling the acid solution and reducing the flow rate, until the solution reaches neutrality, the two through holes 17 and the "Y"-shaped flow channel 21 are not connected, and then when the hydrogen ion concentration gradually increases, the induced electromotive force of the electromagnet A19 and the electromagnet B20 continues to increase, and the valve core 16 continues to move, so that the through hole 17 is connected with the alkali liquid tank 10, so that the alkali liquid tank 10 flows into the treatment tube 5 for neutralization, and the hydrogen ion concentration continues to rise. When the acidity increases, the overlapping area of the through hole 17 and the "Y"-shaped flow channel 21 increases, so that the flow channel area of the alkali solution increases;

Since an alternating magnetic field is generated in the iron core 29, the alternating magnetic field will apply an equivalent magnetic field to the magnetic attraction block 33, and the field strength of the equivalent magnetic field is related to the field strength of the alternating magnetic field. The equivalent magnetic field will be applied to the magnetic attraction block 33, so that the magnetic attraction block 33 overcomes the elastic force of the insulating spring 31 and moves, thereby changing the matching position of the spring contact 30 and the coil B26, thereby changing the number of turns of the coil B26 connected to the circuit, so that the change in the electromotive force between the reference electrode 23 and the hydrogen ion selective electrode 24 can be amplified and then applied to the electromagnet A19 and the electromagnet B20;

When sewage flows through the filter plate 34, the dirt inside it will be intercepted by the filter plate 34, and as the sewage flows, the driving assembly 38 will drive the driving shaft 39 to rotate, thereby scraping the dirt on the surface of the filter plate 34 and dropping it into the dirt collecting box 37 for collection. When the driving shaft 39 rotates, it can drive the connecting plate 40 to rotate, thereby causing the connecting shaft 41 and the fixing ring 43 to rotate, so that the connecting shaft 41 rotates under the connection action of the synchronous belt 47, thereby driving the roller 42 to rotate, so that the connecting belt 44 moves, so that during the entire rotation process, the entire scraper 35 is used to scrape off the dirt on the surface of the filter plate 34, and at the same time, the conveying plate 45 pushes the scraped dirt to the outside.

Embodiment 2:

A sewage treatment equipment, as shown in Figures 10-12, in order to solve the driving problem; this embodiment makes the following improvements on the basis of Example 1: the driving assembly 38 includes a slip ring 48 that slides on the outer wall of the driving shaft 39 and a plurality of turbine blades 49 that are rotatably connected to the outer wall of the slip ring 48 through a turntable 50.

An elastic body 51 is disposed on one side of the driving shaft 39 , and the slip ring 48 is connected to the end of the driving shaft 39 through the elastic body 51 .

A limiting groove 46 is provided on the outer side of the driving shaft 39 , and the rotating disk 50 is movably limited and matched with the inner wall of the limiting groove 46 through two rotating rollers 42 welded to the inner wall of the rotating disk 50 .

Furthermore, the limiting groove 46 is a combination structure of an arc and a straight line.

When this embodiment is in use, when the sewage flow rate is relatively small, the force exerted by the water flow on the turbine blades 49 is also small. At this time, the slip ring 48 slides due to the elastic force of the elastomer 51, so that the turbine blades 49 rotate by utilizing the cooperation between the limit column 52 and the turbine blades 49, and the rotation direction of the turbine blades 49 is along the water flow direction. The projected area tends to increase. At this time, the turbine blades 49 will be subjected to an increased force from the water flow, and vice versa.

The present device drives the drive shaft 39 by setting a turbine blade 49, so that the drive shaft 39 can be driven to rotate by utilizing the force of water flow, and by setting the cooperation of the limit groove 46, the limit column 52 and the elastic body 51, the "deflection" angle of the turbine blade 49 can be related to the water flow speed, and negative feedback regulation can be achieved, so that the driving speed of the drive shaft 39 by the turbine blade 49 can be relatively "moderate", thereby ensuring the reliability of dirt removal.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (10)

1. A sewage treatment device, comprising a sedimentation tank (1), a primary filtration adsorption tank (2), a reaction tank (3) and a neutralization fine filtration part (4) connected in sequence, characterized in that: The neutralization and fine filtration section (4) comprises a treatment tube (5), an acid-base detector (6) arranged on the downstream side wall of the treatment tube (5), a neutralization liquid supply mechanism (7) arranged on the upstream side wall of the treatment tube (5), and a fine filtration mechanism (8) arranged inside the upstream of the treatment tube (5), wherein the fine filtration mechanism (8) is located upstream of the neutralization liquid supply mechanism (7); The neutralizing liquid supply mechanism (7) comprises an acid liquid tank (9) and an alkali liquid tank (10), wherein the liquid outlets of the acid liquid tank (9) and the alkali liquid tank (10) are connected to a three-way opening valve (11), the liquid outlet of the three-way opening valve (11) is connected to a three-way pipe (12), and the three-way pipe (12) is connected to the side wall of the treatment pipe (5) via a delivery pump (13); The three-way opening valve (11) comprises a valve housing (14) and a valve core (16) slidably connected to the inner wall of the valve housing (14); the inner wall of the valve housing (14) is provided with a "Y"-shaped flow channel (21); the inner wall of the valve core (16) is provided with two through holes (17) matching the "Y"-shaped flow channel (21); an electromagnet B (20) is fixed to one side of the valve core (16) by bolts; an electromagnet A (19) is fixed to the inner wall of the valve housing (14) by bolts; the electromagnet B (20) and the electromagnet A (19) are arranged opposite to each other; The outer wall of the valve core (16) is provided with a sealing ring (18), and the sealing ring (18) is fitted inside the valve housing (14); The acid-base detector (6) comprises a reference electrode (23) fixed to the side wall of the processing tube (5) through a connecting block (22), a hydrogen ion selective electrode (24) and a magnetic shielding cover (28), wherein the magnetic shielding cover (28) is fixed to the side wall of the processing tube (5) through bolts, an iron core (29) is fixed to the inner wall of the magnetic shielding cover (28), and a coil A (25) and a coil B (26) are respectively wound around the two ends of the iron core (29), the two ends of the coil B (26) are electrically connected to the reference electrode (23) and the hydrogen ion selective electrode (24) through an inverter, and the two ends of the coil B (26) are electrically connected to the electromagnet A (19) and the electromagnet B (20) through a set of sliding contact components (27), and the current directions of the electromagnet A (19) and the electromagnet B (20) are opposite. 2. A sewage treatment equipment according to claim 1, characterized in that the two groups of sliding contact components (27) are arranged symmetrically, a guide slide rod (32) is fixedly provided on the inner wall of the iron core (29), and the sliding contact component (27) includes a guide slide rod (32) and a magnetic suction block (33) slidably connected to the outer wall of the guide slide rod (32). 3. A sewage treatment equipment according to claim 2, characterized in that a spring contact (30) is fixed to the side wall of the magnetic block (33), the spring contact (30) contacts and is electrically connected to the side wall of the coil B (26), and an insulating spring (31) is buckled to the side wall of the magnetic block (33), and the other end of the insulating spring (31) is buckled to the side wall of the iron core (29). 4. A sewage treatment equipment according to claim 1, characterized in that the fine filtration mechanism (8) includes a filter plate (34) fixed to the inner wall of the treatment pipe (5) and a scraper (35) rotatably connected to the filter plate (34) through a drive shaft (39), and the scraper (35) is attached to the filtration surface of the filter plate (34), and a drive assembly (38) is provided at the end of the drive shaft (39). 5. A sewage treatment equipment according to claim 4, characterized in that a leakage groove (36) is provided on the bottom outer wall of the treatment pipe (5) located upstream of the filter plate (34), and a sewage collecting box (37) is fixed to the bottom outer wall of the leakage groove (36) by bolts. 6. A sewage treatment equipment according to claim 4, characterized in that the scraper (35) includes a connecting plate (40) fixed to the end of the driving shaft (39) and multiple groups of rollers (42) rotatably connected to the connecting plate (40) through connecting shafts (41), and the outer walls of two of the rollers (42) in a group are equipped with connecting belts (44). 7. A sewage treatment equipment according to claim 6, characterized in that a uniform conveying plate (45) is fixed to the outer wall of the connecting belt (44), a fixing ring (43) is fixed to the side wall of the filter plate (34), and the roller (42) and the connecting shaft (41) are driven and matched through a synchronous belt (47). 8. A sewage treatment equipment according to claim 4, characterized in that the driving assembly (38) includes a slip ring (48) slidingly fitted on the outer wall of the driving shaft (39) and a plurality of turbine blades (49) rotatably connected to the outer wall of the slip ring (48) through a turntable (50). 9. A sewage treatment equipment according to claim 8, characterized in that an elastic body (51) is provided on one side of the driving shaft (39), and the slip ring (48) is connected to the end of the driving shaft (39) through the elastic body (51). 10. A sewage treatment equipment according to claim 9, characterized in that a limit groove (46) is provided on the outer side of the driving shaft (39), and the turntable (50) is movably limited and matched with the inner wall of the limit groove (46) through two rollers (42) welded to its inner wall, and the limit groove (46) is a combination structure of an arc and a straight line.