CN110124363A - Electric trowelling formula dross cleaning plant, matched primary sedimentation tank dross well and primary sedimentation tank dross method for cleaning - Google Patents

Abstract

The invention discloses an electric scraper type scum cleaning device, a matching primary sedimentation tank scum well and a primary sedimentation tank scum cleaning method. The cleaning device includes an equipment frame, and a motor bracket and a motor are arranged on the upper part of the equipment frame. The output shaft of the motor is connected with the first transmission wheel; the driving wheel shaft and the driven wheel shaft are arranged at the lower part of the equipment frame, and the second driving wheel is arranged at one end of the driving wheel shaft, and the first driving wheel and the second driving wheel are passed through a ring The transmission chain is connected; there is an annular transmission chain between the driven wheel shaft and the driving wheel shaft, and there are slag scrapers at equal intervals between the two transmission chains, which are driven by the transmission chain between the driving wheel shaft and the driven wheel shaft. Cyclic movement. The scum well is equipped with the cleaning device and the division of the three well chambers, so that the sewage and scum mixture discharged from the primary sedimentation tank can be separated twice, and the scum in it can be effectively scraped out, and the degree of automation is high, which is beneficial Save labor costs and simplify scum cleaning procedures.

Description

Electric scraper type scum cleaning device, matching primary sedimentation tank scum well and primary sedimentation tank float Slag cleaning method

technical field

The invention relates to the technical field of sewage treatment, in particular to an electric scraper type scum cleaning device, a matching scum well in a primary sedimentation tank and a method for cleaning scum in the primary sedimentation tank.

Background technique

The scum well in the primary sedimentation tank of the sewage treatment plant is mainly to remove the fine impurities floating in the sewage that cannot be filtered out. The scum in the primary sedimentation tank is collected by the scraper and transported to the scum well, and then further filtered through the scum well. The scum is separated from the sewage, and the separated sewage is discharged along the sewage pipe, while the scum is left in the scum well. In the past, the scum in the scum well had to be cleaned manually. It was first salvaged from the water and brought to the ground, dried and then put into the garbage bin for transportation. Generally, it needed to be cleaned manually once a week. Clean up to the ground first, and then put it into the trash can the next day, which takes two days. Moreover, the scum cleaned on the ground will have a greater impact on the surrounding environmental sanitation after drying, and it is more difficult to clean up, and during manual cleaning, it is relatively dirty and smelly, which also has a certain impact on the health of personnel. For example, a sewage treatment branch has a total of 8 primary sedimentation tanks, cleaning once a week is equivalent to cleaning 8 primary sedimentation tanks every week, and regardless of the large amount of scum, the annual cost of hiring a special person to clean it is about 40,000 yuan. Manual cleaning takes a long time and is expensive, and it is a high-temperature outdoor operation, high-altitude operation, and operation with water, which is dangerous.

Other cleaning methods such as filter-type screw conveying cleaning device, due to the high viscosity of the primary sedimentation scum, which is in the form of fine powder, the filter screen is often blocked. The scum passes through the filter screen, and the filtering effect is not ideal, and after the brush is exposed to extrusion for a long time, it will not only fail to clean the filter screen, but will squeeze the scum and aggravate the blockage of the filter screen.

In view of this, it is extremely necessary to study an automatic cleaning device for scum wells in primary sedimentation tanks to improve cleaning efficiency and reduce cleaning costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide an electric scraper type scum cleaning device with high cleaning efficiency, low cleaning cost and high degree of automation, a matching primary sedimentation tank scum well and a primary sedimentation tank scum cleaning method.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An electric scraper type scum cleaning device is designed, which includes an equipment frame for being installed on the side wall of the scum well, a motor bracket is arranged on the upper part of the equipment frame, and a motor is arranged on the motor bracket, The output shaft of the motor is connected with a first transmission wheel;

A driving wheel shaft and a driven wheel shaft are respectively provided at the lower part of the equipment frame close to both ends, and a second transmission wheel is provided at the end of the same side of the driving wheel shaft and the first transmission wheel, and the first transmission wheel Located on the same plane as the second transmission wheel, the first transmission wheel and the second transmission wheel are connected by an endless transmission chain;

Ring-shaped transmission chains are respectively provided between the two ends of the driven wheel shaft and the corresponding positions of the two ends of the driving wheel shaft, and the two transmission chains are parallel, and slag scrapers are arranged at equidistant intervals between the two transmission chains , and the slag scraper is parallel to the driving wheel shaft and the driven wheel shaft; the two ends of the slag scraper are fixedly installed on the transmission chains on both sides, and are driven by the transmission chain between the driving wheel shaft and the driven wheel shaft. Cyclic movement.

In the above technical solution, the motor drives the first transmission wheel to rotate, and the first transmission wheel drives the second transmission wheel to rotate through the transmission chain. When the second transmission wheel rotates, it drives the driving wheel shaft to rotate synchronously. When the driven wheel shaft rotates, when the driving wheel shaft and the driven wheel shaft rotate, the circular rotation of the transmission chain on both sides is realized, which drives the circular rotation of the scum scraper plate on the transmission chain, which is used to scrape the scum floating on the liquid surface in the scum well to a certain point. side, to realize the automatic cleaning of scum in the scum well.

Preferably, the slag scraper is an "L"-shaped plate body, the horizontal side of the "L"-shaped plate body is fixedly installed on the transmission chain, and the end of the vertical side faces away from the transmission chain.

Preferably, a speed reducer is further provided between the electric motor and the first transmission wheel.

The present invention also relates to a primary sedimentation tank scum well using the electric scraper type scum cleaning device, which includes a well body in which a scum collecting well chamber, a sewage filtering well chamber and a sewage discharge well chamber are sequentially separated , on the side wall of the end of the well body where the scum collection well chamber is located, there is a scum mixture inlet connected with the primary sedimentation tank, and the scum separation chamber is passed between the scum collection well chamber and the sewage filtration well chamber. separated by the slag separating plate, and a water outlet is provided at the lower part of the slag separating plate; the sewage filtering well chamber and the sewage discharge well chamber are separated by an overflow plate, and the top height of the overflow plate is lower than the side of the well body Wall height; a water outlet is provided on the side wall of the well body end where the sewage discharge well chamber is located;

A slag outlet is provided on the side wall of the well body on one side of the scum collection well chamber, the electric scraper type scum cleaning device is arranged on the upper part of the scum collection well chamber, and the equipment frame is fixedly installed on the scum collection chamber. On the side wall of the well body where the collection well chamber is located, the slag outlet is located below the driving wheel shaft.

In the scum well, the scum collection well chamber, sewage filtration well chamber and sewage discharge well chamber are set up so that the mixed liquid of sewage and scum in the primary sedimentation tank first enters the scum collection well chamber, and the scum floats on the liquid surface under the action of buoyancy On the top, through the circular movement of the scraper plate of the electric scraper type scum cleaning device, the scum floating on the liquid surface is scraped off layer by layer, and only a small part of the scum on the surface of the liquid surface is cleaned each time. This part of the scum can be directly contacted with the air to be initially dried, and the moisture content is not high, so it does not need to be dried again, which can meet the conditions of direct packing and cleaning, and has little impact on the surrounding environment.

Preferably, a scum collecting box is provided outside the well body outside the slag outlet. The scum is scraped by the scraper and falls into the scum collection box, waiting for the subsequent packing and centralized treatment, which avoids the accumulation of scum on the ground after being salvaged and affects the surrounding environment, which is different from the scum cleaning in the prior art Compared with the procedures of salvage, accumulation, drying, boxing and centralized treatment, the processing procedure is greatly simplified, the cleaning efficiency is improved, and labor costs are saved.

Preferably, a slag collecting plate is fixedly arranged at the slag outlet, and one side of the slag collecting plate extends to the chamber of the scum collecting well, and the other side extends to the top of the scum collecting box. The scum plate plays a transitional role. The scum scraped by the scum scraper first passes through the scum collecting plate and then enters the scum collection box. In this process, the contact time between the scum and air is increased to realize the preliminary drying of the scum , to reduce the moisture content in the scum, which is convenient for subsequent treatment.

Preferably, four corners of the bottom of the scum collecting box are respectively provided with rollers, wherein more than one roller is a roller with brakes. Make the scum collecting box easy to move and replace.

Preferably, the end face of the slag scraping plate moved to the position where the slag outlet is located is flush with the upper surface of the slag collecting plate, if the scum scraping plate is too high, the scum cleaning will not be clean, the environment will be polluted and the space will be wasted. If the scum scraper is too low, it will affect the cleaning of scum and cause bumps. Such a structural setting can ensure that the scum scraper scrapes the scum to the scum collecting plate, and makes the scum layer scraped each time thinner, less scum scraped up, and the moisture content of the scum is low. In the process of entering the scum collecting box through the slag collecting board, after contacting with the air to obtain preliminary drying, it can enter the subsequent boxing and centralized treatment procedures, and no further drying or dehydration treatment is required to reduce the moisture content.

Preferably, the upper surface of the slag collecting plate has a shape that slopes downward from the outside to the scum collecting well chamber, so that the scum scraping plate can scrape the scum onto the scum collecting plate.

Preferably, the width of the slag outlet is greater than or equal to the width of the slag scraping plate; the height difference between the height of the slag separating plate and the upper end surface of the slag outlet is ≥ 5cm; the height of the upper end surface of the slag outlet and The height difference at the top of the scum collection box is ≥10cm.

Preferably, the power of the motor is 0.5KW-1KW, and the moving speed of the slag scraper is lower than 10m/min, so as to prevent the scum scraper from rotating too fast, causing scum to splash and affect the surrounding environment, and ensure the cleaning effect.

The present invention also relates to a method for cleaning scum in a primary sedimentation tank, using the above-mentioned scum well for cleaning, comprising the following steps:

(1) The mixed solution of sewage and scum in the primary sedimentation tank enters the scum collection well chamber through the scum mixed solution inlet on the side wall of the scum well, and the scum in the mixed solution floats up under the action of buoyancy, and the sewage in the lower part passes through the compartment The water outlet on the slag plate enters the sewage filtration well chamber to realize pre-separation of slag water;

(2) Start the electric scraper type scum cleaning device, the motor drives the first transmission wheel to rotate, the first transmission wheel drives the second transmission wheel to rotate through the transmission sprocket, the driving wheel shaft and the second transmission wheel rotate synchronously, through the transmission on both sides The chain drives the driven wheel shaft to rotate synchronously. When the driving wheel shaft and the driven wheel shaft rotate, the transmission chain on both sides rotates circularly, driving the scraper on the transmission chain to perform circular motion, and collects the scum floating on the surface of the liquid level in the scum collecting well. Scrape out from the slag outlet, fall into the scum collection box outside the slag outlet, and wait for subsequent treatment;

(3) The sewage entering the sewage filtration well chamber initially settles, and the upper water body overflows to the sewage discharge well chamber through the upper part of the overflow plate, and is discharged through the sewage discharge well chamber, and enters the subsequent treatment pipe network.

The beneficial effects of the present invention are:

1. The electric scraper type scum cleaning device of the present invention has a reasonable structure and a high degree of automation, which can realize the circulation and continuous rotation of the scum scraper, improve the scraping efficiency and ensure the scum cleaning effect.

2. The scum well using the electric scraper type scum cleaning device, through the division of three well chambers, the sewage and scum mixture discharged from the primary sedimentation tank can be separated for the second time, and the scum in it can be effectively scraped out , and the degree of automation is high, which is conducive to saving labor costs, simplifying the scum cleaning procedure, and the cleaned scum does not need to be dehydrated, and can be directly packed for subsequent processing, which has little impact on the surrounding environment; it is different from manual cleaning in the prior art Compared with the traditional method, the economy and efficiency are greatly improved.

Description of drawings

Fig. 1 is the structural representation of electric scraper type scum cleaning device of the present invention;

Fig. 2 is a structural schematic diagram of an electric scraper type scum cleaning device installed on a scum well;

Fig. 3 is a schematic diagram of the side structure of the electric scraper type scum cleaning device installed on the scum well;

Fig. 4 is the structural representation of scum well;

Labels in the figure: 1 equipment frame, 2 motor bracket, 3 motor, 4 first transmission wheel; 5 driving wheel shaft, 6 driven wheel shaft, 7 second transmission wheel, 8 transmission chain; 9 transmission chain, 10 slag scraper;

11 well body, 12 scum collecting well chamber, 13 sewage filtering well chamber, 14 sewage discharge well chamber, 15 scum mixture inlet, 16 scum separating plate, 17 overflow plate, 18 ground; 19 slag outlet, 20 floating Slag collecting box, 21 slag collecting plates, 22 rollers.

Detailed ways

The specific implementation of the present invention will be described below in conjunction with the examples, but the following examples are only used to describe the present invention in detail, and do not limit the scope of the present invention in any way. The equipment components involved in the following embodiments are conventional equipment components unless otherwise specified.

Embodiment 1: An electric scraper type scum cleaning device, referring to Fig. 1, includes an equipment frame 1 for being installed on the side wall of the scum well, a motor support 2 is arranged on the top of the equipment frame 1, and a motor support 2 is provided on the top of the equipment frame 1. An electric motor 3 is arranged on it, and the output shaft of the electric motor 3 is connected with a first transmission wheel 4, and a speed reducer is also arranged between the electric motor 3 and the first transmission wheel 4.

The lower part of the equipment frame 1 is provided with a driving wheel shaft 5 and a driven wheel shaft 6 respectively near the two ends, and a second driving wheel 7 is arranged at the end of the same side of the driving wheel shaft 5 and the first driving wheel 4, and the first driving wheel 4 and The second transmission wheel 7 is located on the same plane, and the first transmission wheel 4 and the second transmission wheel 7 are connected by an endless transmission chain 8 .

An annular transmission chain 9 is respectively arranged between the two ends of the driven wheel shaft 6 and the corresponding positions of the two ends of the driving wheel shaft 5, and the two transmission chains 9 are parallel, and two transmission chains 9 are equidistantly spaced. Slag scraping plate 10, and the slag scraping plate 10 is parallel to the driving wheel shaft 5 and the driven wheel shaft 6; the two ends of the slag scraping plate 10 are respectively fixed and installed on the transmission chain 9 on both sides, driven by the transmission chain 9 on the driving wheel shaft 5 Do circular movement with driven wheel shaft 6.

Wherein, the slag scraping plate 10 is an "L"-shaped plate body, the horizontal side of the "L"-shaped plate body is fixedly installed on the transmission chain, and the end of the vertical side is set towards the direction away from the transmission chain.

Embodiment 2, a primary sedimentation tank scum well using the electric scraper type scum cleaning device in Embodiment 1, see Figure 2-Figure 4, including a well body 11, in which the scum collection is separated in sequence The well chamber 12, the sewage filtering well chamber 13 and the sewage discharge well chamber 14 are provided with a scum mixture inlet 15 communicating with the primary sedimentation tank on the side wall of the well body end where the scum collecting well chamber 12 is located, and the scum mixture The collection well chamber 12 and the sewage filtration well chamber 13 are separated by a slag separation plate 16, and a water outlet is provided at the lower part of the slag separation plate 16; the sewage filtration well chamber 13 and the sewage discharge well chamber 14 are separated by an overflow plate 17 Separated, the height of the top of the overflow plate 17 is lower than the height of the side wall of the well body 11; a water outlet 18 is provided on the side wall of the end of the well body where the sewage discharge well chamber 14 is located.

A slag outlet 19 is provided on one side wall of the scum collecting well chamber 12, the electric scraper type scum cleaning device is arranged on the upper part of the scum collecting well chamber, and the equipment frame 1 is fixedly installed in the scum collecting well chamber On the side wall of the well body where 12 is located, the slag outlet 19 is located below the driving wheel shaft 5 . A scum collecting box 20 is provided outside the well body 11 outside the slag outlet 19 . The scum collection box 20 can be placed on the ground outside the scum well, or a support platform is set on the ground to place the scum collection box 20, so that the scum collection box 20 and the slag outlet 19 are kept at a suitable distance. Four corners of the bottom of the scum collecting box 20 are respectively provided with rollers 22, wherein more than one roller is a roller with brakes.

A slag collecting plate 21 is fixedly arranged at the slag outlet 19, one side of the slag collecting plate 21 extends into the scum collecting well chamber 12, and the other side extends to the top of the scum collecting box 20; the upper surface of the slag collecting plate 21 It is a shape that slopes downward gradually from the outside to the inside of the scum collection well chamber 12 . And make the end surface of the slag scraping plate 10 moved to the position where the slag outlet is located flush with the upper surface of the slag collecting plate 21 .

The width of the slag outlet 19 is greater than or equal to the width of the slag scraper 10; the height difference between the height of the slag separator 16 and the upper end surface of the slag outlet 19 is ≥ 5 cm; The height difference is greater than or equal to 10cm; the power of the motor 3 is 0.5KW-1KW, and the moving speed of the slag scraper is lower than 10m/min.

Embodiment 3: a kind of primary sedimentation tank scum cleaning method uses the scum well in embodiment 2 to clean up, comprising the following steps:

(1) The mixed solution of sewage and scum in the primary sedimentation tank enters the scum collection well chamber through the scum mixed solution inlet on the side wall of the scum well, and the scum in the mixed solution floats up under the action of buoyancy, and the sewage in the lower part passes through the compartment The water outlet on the slag plate enters the sewage filtration well chamber to realize pre-separation of slag water;

(2) Start the electric scraper type scum cleaning device, the motor drives the first transmission wheel to rotate, the first transmission wheel drives the second transmission wheel to rotate through the transmission sprocket, the driving wheel shaft and the second transmission wheel rotate synchronously, through the transmission on both sides The chain drives the driven wheel shaft to rotate synchronously. When the driving wheel shaft and the driven wheel shaft rotate, the transmission chain on both sides rotates circularly, driving the scraper on the transmission chain to perform circular motion, and collects the scum floating on the surface of the liquid level in the scum collecting well. Scrape out from the slag outlet, fall into the scum collection box outside the slag outlet, and wait for subsequent treatment;

(3) The sewage entering the sewage filtration well chamber initially settles, and the upper water body overflows to the sewage discharge well chamber through the upper part of the overflow plate, and is discharged through the sewage discharge well chamber, and enters the subsequent treatment pipe network.

The present invention has been described in detail above in conjunction with the embodiments, but those skilled in the art can understand that without departing from the gist of the present invention, the specific parameters in the above embodiments can also be changed to form multiple specific parameters. The embodiments are all common variation ranges of the present invention, and will not be described in detail here.

Claims (10)

1. a kind of electric trowelling formula dross cleaning plant, which is characterized in that including the equipment for being mounted on dross well side wall Frame is equipped with electric machine support on the top of the device framework, motor is equipped on the electric machine support, the motor Output shaft is connected with the first driving wheel；

It is respectively equipped with drive sprocket axle and follower shaft by the position of two close end in the lower part of the device framework, in the driving wheel Axis and the ipsilateral one end of first driving wheel are equipped with the second driving wheel, and first driving wheel and the second driving wheel are located at same In plane, it is connected between first driving wheel and the second driving wheel by gypsy chain；

The chain of annular, and two are respectively equipped between the both ends of the follower shaft and the both ends corresponding position of drive sprocket axle A chain is parallel, and equidistant interval is provided with scum board between two chains, and the scum board and drive sprocket axle and Follower shaft is parallel；The both ends of the scum board are respectively and fixedly installed on the chain of two sides, are driven by chain in master Loopy moving is done between driving wheel axis and follower shaft.

2. electric trowelling formula dross cleaning plant according to claim 1, which is characterized in that the scum board is " L " type The horizontal side of plate body, " L " the template body is fixedly mounted on chain, and the end of vertical side is directed away from chain Direction setting.

3. electric trowelling formula dross cleaning plant according to claim 1, which is characterized in that in the motor and first Speed reducer is additionally provided between driving wheel.

4. a kind of primary sedimentation tank dross well using electric trowelling formula dross cleaning plant described in claim 1, which is characterized in that packet Well body is included, dross is successively separated out in the well body and collects well room, sewage water filtration well room and sewage discharge well room, described The dross mixed liquor import being connected with primary sedimentation tank, the dross are offered in well body end sidewalls where dross collection well room It collects and is separated between well room and sewage water filtration well room by dam plate, be equipped with the mouth of a river in the lower part of the dam plate；The dirt It is separated between water filtering well room and sewage discharge well room by overflow plate, the overhead height of the overflow plate is high lower than well body side wall Degree；Discharge outlet is equipped in the well body end sidewalls where the sewage discharge well room；

Slag notch is equipped on the side well body side wall that the dross collects well room, the electric trowelling formula dross cleaning plant is set It sets and collects the top of well room in dross, the device framework is fixedly mounted on the well body side wall where dross collects well room, institute State the lower section that slag notch is located at the drive sprocket axle.

5. primary sedimentation tank dross well according to claim 4, which is characterized in that be located on the outside of slag notch outside the well body Position be equipped with dross collecting box.

6. primary sedimentation tank dross well according to claim 5, which is characterized in that be fixedly installed receipts slag at the slag notch Plate, the receipts slag plate side extend to the dross and collect in well room, and the other side extends to the top of the dross collecting box；Institute Stating and receiving the upper surface of slag plate is to collect progressively lower inclined shape in well room by outer lateral dross.

7. primary sedimentation tank dross well according to claim 5, which is characterized in that at the bottom four corners of the dross collecting box It is respectively equipped with idler wheel, wherein having more than one idler wheel is the idler wheel of strap brake.

8. primary sedimentation tank dross well according to claim 4, which is characterized in that be moved to scraping for the slag notch position The end face of slag plate is flush with the upper surface for receiving slag plate.

9. primary sedimentation tank dross well according to claim 5, which is characterized in that the width of the slag notch is greater than or equal to institute State the width of scum board；Difference in height >=5cm of the height of the dam plate and the slag notch upper surface；The slag notch upper end The height in face and difference in height >=10cm at the top of dross collecting box；The power of the motor is 0.5KW-1KW, the shifting of scum board Dynamic speed is lower than 10m/min.

10. a kind of primary sedimentation tank dross method for cleaning, which is characterized in that cleared up, wrapped using dross well as claimed in claim 4 Include the following steps:

(1) mixed liquor of the sewage in primary sedimentation tank and dross enters dross by the dross mixed liquor import on dross well side wall It collects in well room, the dross in mixed liquor is floated by buoyancy, and lower part sewage enters sewage by the mouth of a river of crossing on dam plate Well room is filtered, realizes pulp water pre-separation；

(2) start electric trowelling formula dross cleaning plant, motor drives the rotation of the first driving wheel, and the first driving wheel passes through transmission Sprocket wheel drives the rotation of the second driving wheel, and drive sprocket axle and the second driving wheel rotate synchronously, and is driven by the chain of two sides driven Wheel shaft rotates synchronously, and while drive sprocket axle and follower shaft rotate, the chain cycle rotation of two sides is driven on chain Scraper plate carries out shuttling movement, and the dross that liquid level surface is floated in dross collection well is scraped from slag notch, is fallen into outside slag notch Dross collecting box in, wait subsequent processing；

(3) it enters the indoor sewage of sewage water filtration well and preliminary sedimentation occurs, top water body passes through the top overflow of overflow plate extremely Sewage discharge well room is discharged by sewage discharge well room, is entered in subsequent processing pipe network.