CN112456692A

CN112456692A - Sewage treatment equipment

Info

Publication number: CN112456692A
Application number: CN202011548367.9A
Authority: CN
Inventors: 陈泽枝; 林春明
Original assignee: Fujian Zhongmeng Environmental Protection Co ltd
Current assignee: Fujian Zhongmeng Environmental Protection Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-03-09
Anticipated expiration: 2040-12-24
Also published as: CN112456692B

Abstract

The invention discloses a sewage treatment device, which comprises a water inlet device and a wastewater pretreatment device, wherein the water inlet device comprises a slag collecting box, a water inlet box provided with a water conveying port and a slag outlet, an oblique filter screen and an oblique electric push rod which are arranged in the water inlet box, the end part of the oblique electric push rod is fixedly connected with a push screen, the slag outlet is arranged above the oblique filter screen, the slag outlet is communicated with the slag collecting box through a slag collecting pipeline, the wastewater pretreatment device comprises a water outlet pipe, a water inlet pipe, a purification box and a liquid medicine box, a centrifugal box is arranged in the purification box and comprises an inner centrifugal box and an outer centrifugal box, the bottom of the inner centrifugal box is connected with a rotating motor, a water filtering plate is arranged between the first side wall of the purification box and the side wall of the outer centrifugal box, sliding supports are arranged at two ends of the water filtering plate, filtering holes are arranged on the water filtering plate, sliding chutes matched with the sliding supports, the device is not easy to be blocked.

Description

Sewage treatment equipment

Technical Field

The invention relates to the technical field of municipal environmental protection, in particular to sewage treatment equipment.

Background

Sewage treatment is a process of purifying sewage to meet the requirement of draining a certain water body or reusing the water body. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. Sewage treatment equipment is required in sewage treatment.

When the existing sewage treatment equipment is used, the sewage contains a large amount of impurities, and the volume of some impurities is large, so that the blockage phenomenon is easy to occur, and the blockage phenomenon can also occur if the sewage is not stirred and mixed in the purification process, so that the sewage is difficult to be completely purified.

In the sewage treatment process, flocculating agents are generally used for settling micro impurities in the sewage, and the flocculating agents can be divided into inorganic flocculating agents and organic flocculating agents according to the chemical components of the flocculating agents. Wherein the inorganic flocculant also comprises an inorganic coagulant and an inorganic polymeric flocculant; the organic flocculant also comprises a synthetic organic polymer flocculant, a natural organic polymer flocculant and a microbial flocculant. The flocculant mainly comprises positive and negative groups and particles or particles which are difficult to separate and have negative and positive electricity in water, wherein the particles or the particles are close to each other, the potential of the particles is reduced, the particles are in an unstable state, the particles are concentrated by utilizing the polymerization property of the particles and are separated by a physical or chemical method, and the existing flocculant preparation equipment for municipal sewage treatment has the problem that the treated sewage blocks the equipment.

For example, chinese patent No. cn201920125581.x discloses a sewage treatment device with high treatment efficiency, through the liquid medicine jar that sets up, is convenient for make the medicament in the liquid medicine jar drop into in the sewage case, and then cooperation motor one and rabbling mechanism's setting, and the effectual medicament that makes mixes with sewage intensive mixing, but it has ignored the easy problem that blocks up of equipment, and the sewage purity after handling is not high.

Disclosure of Invention

In order to solve the problems, the invention provides the sewage treatment equipment which has good water purification effect and is not easy to block.

The technical scheme for solving the problem is that the sewage treatment equipment comprises a water inlet device and a waste water pretreatment device, wherein the water inlet device comprises a slag collecting box, a water inlet box provided with a water conveying port and a slag outlet, an oblique filter screen and an oblique electric push rod, the oblique filter screen and the oblique electric push rod are arranged in the water inlet box, the end part of the oblique electric push rod is fixedly connected with a pushing screen, the slag outlet is arranged above the oblique filter screen, the slag outlet is communicated with the slag collecting box through a slag collecting pipeline, the waste water pretreatment device comprises a water outlet pipe, a water inlet pipe, a purification box and a liquid medicine box, the water inlet pipe is communicated with the top of the purification box and the bottom of the water inlet box, the liquid medicine box is communicated with the purification box through a liquid medicine pipeline, a centrifugal box is arranged in the purification box, the centrifugal box comprises an inner centrifugal box and an outer centrifugal box, the bottom of the inner centrifugal box, the outlet pipe runs through the first lateral wall of purifying box, the first lateral wall of purifying box with be equipped with the drainage board between the outer centrifuge box lateral wall, the drainage board both ends are equipped with smooth the support, the drainage board is equipped with the filtration pore, the lateral wall upper end of outer centrifuge box all be equipped with the first lateral wall of purifying box slide the spout that holds in the palm the looks adaptation.

Preferably, the side wall of the inner centrifugal box is provided with a centrifugal through hole, the lower end of the side wall of the outer centrifugal box is provided with a drainage through hole, and an accommodating space is arranged between the inner centrifugal box and the outer centrifugal box.

Preferably, the first side wall of the purification box and the side wall of the outer centrifugal box are fixedly connected with limit pieces for stopping the water filtering plates.

Preferably, the first lateral wall of purifying box is equipped with first jack, outer centrifuge box lateral wall all is equipped with the second jack, rotatory brush include rotation axis and rigid coupling in the brush head of rotation axis periphery, the rotation axis is inserted and is located between first jack and the second jack, the rotation axis is connected with the motor electricity, be equipped with the silica gel gasket between the first lateral wall of motor and purifying box.

Preferably, the inner centrifugal box top wall is connected with a sludge pumping pipe, the sludge pumping pipe is connected with a sludge box, and the sludge box is connected with an air pump.

Preferably, a pressure valve and a mud guide pipe communicated with the pressure valve are arranged on the second side wall of the purification box, one end of the mud guide pipe penetrates through the second side wall of the purification box, and the other end of the mud guide pipe penetrates through one side wall of the sludge box.

Preferably, the locating part is a pressure sensor, an electric telescopic rod is arranged at the upper end of the water filtering plate and penetrates through the top wall of the purifying box, the electric telescopic rod and the pressure sensor are connected with a power supply in parallel, and a PLC (programmable logic controller) is arranged between the pressure sensor and the power supply.

Preferably, the push net is perpendicular to the filter net.

Preferably, the rotating electrical machines is connected with a stirring paddle, and the stirring paddle is arranged inside the inner centrifugal box.

In this scheme, sewage treatment's process does: the sewage is input into the water inlet box through the water conveying port, large-scale impurities contained in the sewage are intercepted on the filter screen through the filtration of the inclined filter screen, then the electric push rod drives the push screen to transfer the large-scale impurities to the slag outlet, and then the large-scale impurities are conveyed into the slag collecting box through the slag collecting pipeline, after preliminary filtration is completed, the filtered sewage is conveyed into the inner centrifugal box of the purifying box through the pipeline, in the scheme, the outer centrifugal box divides the purifying box into a centrifugal area and a water purifying area, the inner part of the outer centrifugal box is the centrifugal area, the space between the inner wall of the purifying box and the outer centrifugal box is the water purifying area, the rotating motor is connected with the bottom of the inner centrifugal box through a shaft and is fixedly connected with the outer wall of the outer centrifugal box through the rotating motor, after flocculating agent in the liquid medicine box is input into the inner centrifugal box, the inner centrifugal box is driven to rotate, the position of the outer centrifugal box is kept unchanged, and the side, when the inner centrifugal box rotates, the flocculating agent reacts with the sewage in the inner centrifugal box and forms a precipitate, small particle impurities contained in the sewage and flocculation products reacted with the flocculating agent are intercepted in the inner centrifugal box, the impurities which do not penetrate through the centrifugal through holes settle at the bottom of the inner centrifugal box under the action of centrifugal force, the impurities or sludge are pumped into the sludge box through a sludge pumping pipe, the sewage treated by the inner centrifugal box enters an accommodating space between the inner centrifugal box and the outer centrifugal box through the centrifugal through holes and flows into a water purifying area through a water discharging through hole at the lower end of the side wall of the outer centrifugal box, the sewage treated by the inner centrifugal box is continuously discharged into the water purifying area until contacting a water filtering plate provided with filtering holes, the filtering holes can be selected to be in a micron level according to actual requirements, the sewage treated by the inner centrifugal box is filtered through the filtering holes of the water filtering plate, the water level continues to rise, and the positions above the water filtering plate are purified water, the position below the drainage plate is for intercepting water, the impurity of intercepting aquatic is the impurity in the concentrated sewage after interior centrifugal box is handled, the impurity granule further diminishes and diminishes for the impurity granule in interior centrifugal box, and subsides in the purifying box bottom because the action of gravity, when needs are taken out and is removed, when the purifying box bottom is because bearing certain impurity or drainage plate because the filtration pore blocks up the back pressure rise, the pressure valve is opened or is opened through ordinary valve manual, and with the leading-in to the silt incasement of the impurity of purifying box bottom, and the outlet pipe discharge through the purifying box of purified water, it all is equipped with the power pump external with the pipeline in this scheme to be worth noting, provide corresponding suction for the pipeline.

In addition, this scheme can also wash the purifying box that blocks up because impurity is too many, and specific process is as follows: when the pressure sensor senses that the pressure exceeds a set range, or the water yield of the atomizing pipe is reduced by naked eyes, or the pressure valve is in a state of being continuously opened, the blockage of the water filtering plate is considered to be cleaned in time, in the scheme, the set threshold value of the pressure valve is far higher than the alarm threshold value of the pressure sensor, when the water filtering plate is blocked, water is stopped from being fed into the water inlet tank, when the water filtering plate is blocked, the pressure sensed by the pressure sensor is increased, the sensed pressure is transmitted to the PLC and converted into a digital signal, whether a power supply connected with the electric telescopic rod needs to be started or not is judged by setting the digital signal sensed by the PLC, when the pressure is increased to a certain value, the power supply is started, the electric telescopic rod starts to move downwards to continuously push the blocked water filtering plate to move downwards, the scheme can be changed into a mode that the electric device artificially applies pressure such as increasing a gravity block and the like, the pressure in the water purification area is increased, the intercepted water in the water purification area flows back to the accommodating space between the outer centrifugal box and the inner centrifugal box through the drainage through hole due to the pressure increase, the inner wall of the inner centrifugal box and the inner wall of the outer centrifugal box cause the blockage phenomenon that the centrifugal through hole is close to the inner wall of the inner centrifugal box and the drainage passes through one side close to the inner wall of the outer centrifugal box due to the long-term contact with silt or impurities, but through the process, the intercepted water can flow back to the inner centrifugal box through the centrifugal through hole, the underground sewage in the inner centrifugal box is diluted, the dirt attached to the drainage through hole and the centrifugal through hole is dispersed, the inner centrifugal box is back-cleaned, the water filter plate is cleaned until the water filter plate contacts with the brush head of the rotary brush, the motor with the limited amount of the rotary shaft is started to clean the filter hole of the water filter plate, the cleaning of the water filter plate is completed, meanwhile, the rotary, the silt of interior centrifugal box is led into to the silt incasement through taking out the silt pipe, further vacate the space that holds the interception water for interior centrifugal box, increase the solubility to impurity and break up the dirt that originally adheres to on drainage through-hole and centrifugal through-hole through interception water and the sewage that dilutes, and then carry out the backwashing to interior centrifugal box, play and alleviate the problem that interior centrifugal box and outer centrifugal box hole wall blockked up, when overflow appears in interior centrifugal box or take out silt pipe and take out silt rarer, then consider the centrifugal through-hole of interior centrifugal box and block up, can artificially open electric telescopic handle's power and wash with above-mentioned samely method, when drainage board and interior centrifugal box, outer centrifugal box wash and finish, release the drainage board to open the work of intaking of case, carry out a new round of sewage treatment step.

The invention has the beneficial effects that:

1. when the inner centrifugal box or the water filtering plate is blocked, a downward external force is applied to the water filtering plate, so that the rotary brush brushes the water filtering plate, and in the process of downward movement of the water filtering plate, the intercepted water flows back into the inner centrifugal box due to pressure, and the inner centrifugal box can be cleaned while the water filtering plate is cleaned, so that the blockage of the equipment in the using process is prevented;

3. according to the scheme, three-layer filtering is performed through the oblique filter screen, the inner centrifugal box and the water filtering plate, the sewage treatment effect is good, and the purification efficiency of the obtained purified water is high;

drawings

FIG. 1 is a schematic structural view of a sewage treatment plant according to the present embodiment;

FIG. 2 is a schematic structural diagram of the purification box in the present embodiment;

in the figure: 1. a water inlet device; 2. a wastewater pretreatment device; 11. a slag collection box; 121. a water delivery port; 122. a slag outlet; 12. a water inlet tank; 13. an oblique filter screen; 14. an oblique electric push rod; 15. pushing the net; 16. a slag collection pipeline; 21. a water outlet pipe; 22. a water inlet pipe; 23. a medicine water tank; 5. A purification box; 51. A centrifuge box; 52. an inner centrifuge box; 53. an outer centrifuge box; 54. a rotating electric machine; 55. a first side wall; 56. a water filter plate; 561. sliding and supporting; 562. filtering holes; 563. a chute; 521. a centrifugal through hole; 531. a drain through hole; 6. a limiting member; 551. a first jack; 552. a second jack; 553. rotating the brush; 557. a motor; 558. a silica gel gasket; 7. pumping sludge pipes; 71. a sludge tank; 72. a second side wall; 73. a pressure valve; 74. a mud guide pipe; 8. an electric telescopic rod; 9. a power source; 91. a PLC controller; 10. and (4) a stirring paddle.

Detailed Description

In order to facilitate the understanding of the present invention, the technical solutions of the present invention are further described below with reference to the specific embodiments, but the present invention is not limited thereto, and it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The utility model provides a sewage treatment equipment, includes water installations 1, useless pretreatment of water device 2, water installations 1 includes collection sediment case 11, is equipped with water delivery port 121, the case 12 of intaking of slag notch 122, locates slant filter screen 13 and slant electric putter 14 in the case 12 of intaking, slant electric putter 14 tip rigid coupling has promotion net 15, and this scheme's electric putter's model can be FAI 50's electric putter, and the electricity is connected with power 9, and the setting of slant filter screen is favorable to increasing the accommodation space of actual sewage in case 12 of intaking, and the slant sets up the filter screen, avoids bringing into sewage when promoting net 15 to promote large-scale impurity for sewage gets into collection sediment case 11 in a large number, reduces sewage treatment efficiency, slope 122 is located slant filter screen 13's top, slag notch 122 with collection sediment case 11 is through collection sediment pipeline 16 intercommunication, useless pretreatment of water device 2 includes outlet pipe 21, The water purification device comprises a water inlet pipe 22, a purification box 5 and a liquid medicine box 23, wherein the water inlet pipe 22 is communicated with the top of the purification box 5 and the bottom of a water inlet box 12, the liquid medicine box 23 is communicated with the purification box 5 through a liquid medicine pipeline, a flocculating agent is stored in the liquid medicine box 23, all pipelines in the scheme are provided with power pumps externally connected with the pipelines to provide corresponding pumping and sucking power for the pipelines, a centrifugal box 51 is arranged in the purification box 5, the centrifugal box 51 comprises an inner centrifugal box 52 and an outer centrifugal box 53, the bottom of the inner centrifugal box 52 is connected with a rotating motor 54, the water inlet pipe 22 penetrates through the top wall of the inner centrifugal box 52, a water outlet pipe 21 penetrates through a first side wall 55 of the purification box 5, a water filtering plate 56 is arranged between the first side wall 55 of the purification box 5 and the side wall of the outer centrifugal box 53, two ends of the water filtering plate 56 are provided with sliding supports 561, the upper end of the side wall of the outer centrifugal box 53 and the first side wall 55 of the purifying box 5 are both provided with a sliding groove 563 matched with the sliding support 561, and the sliding groove 563 and the sliding support 561 are matched to enable the water filtering plate 56 to slide up and down between the box wall of the outer centrifugal box 53 and the box wall of the purifying box 5.

The side wall of the inner centrifugal box 52 is provided with a centrifugal through hole 521, the lower end of the side wall of the outer centrifugal box 53 is provided with a drainage through hole 531, an accommodating space for purified water to flow is arranged between the inner centrifugal box 52 and the outer centrifugal box 53, and the apertures of the centrifugal through hole 521 and the drainage through hole 531 are enough to intercept a flocculation product obtained by a flocculant reaction.

The first side wall 55 of the purification box 5 and the side wall of the outer centrifugal box 53 are fixedly connected with a limiting piece 6 for stopping the water filtering plate 56, the water filtering plate 56 is provided with a filtering hole 562, and the limiting piece 6 limits the water filtering plate 56 to move upwards continuously, so that the water filtering effect is realized.

In order to brush the water filtering plate 56, the first sidewall 55 of the purifying box 5 is provided with a first sidewall, the outer centrifugal box 53 is provided with a second insertion hole 552 on the sidewall, the rotating brush 553 comprises a rotating shaft and a brush head fixedly connected to the periphery of the rotating shaft, the rotating shaft is inserted between the first insertion hole 551 and the second insertion hole 552, the rotating shaft is electrically connected with the motor 557, a silica gel gasket 558 is arranged between the motor 557 and the first sidewall 55 of the purifying box 5, and the silica gel gasket 558 is fixedly arranged on the first sidewall 55 of the purifying box 5 to prevent the overflow of the intercepted water in the purifying region.

The top wall of the inner centrifugal box 52 is connected with a sludge pumping pipe 7, the sludge pumping pipe 7 is connected with a sludge box 71, and the sludge box 71 is connected with an air pump for pumping out sludge in the inner centrifugal box 52 and keeping the inner centrifugal box 52 to have enough space for primary treatment of underground water.

The second side wall 72 of the purification box 5 is provided with a pressure valve 73 and a mud guide pipe 74 communicated with the pressure valve 73, one end of the mud guide pipe 74 penetrates through the second side wall 72 of the purification box 5, and the other end penetrates through one side wall of the mud box 71, although the impurities in the water purification area are less in the scheme, the impurities in the purification box 5 are prevented from increasing after being accumulated for a long time, therefore, the mud guide pipe 74 communicated with the pressure valve 73 is arranged to dredge the interior of the purification box 5, and the pressure threshold value of the pressure valve 73 can be determined according to actual conditions and can be replaced by a common valve.

The locating part 6 is pressure sensor, the water strainer 56 upper end is equipped with electric telescopic handle 8, electric telescopic handle 8 runs through 5 roof of purifying box, electric telescopic handle 8 and pressure sensor are parallelly connected with power 9, be equipped with PLC controller 91 between pressure sensor and the power 9.

The push screen 15 is perpendicular to the filter screen, facilitating the collection of impurities on the filter screen to the upper end of the filter screen, thereby leading into the slag outlet 122.

In order to make the reaction between the flocculant and the sewage in the inner centrifugal box 52 more sufficient, the rotating motor 54 is connected with a stirring paddle 10, and the stirring paddle 10 is arranged inside the inner centrifugal box 52.

In this scheme, sewage treatment's process does: the sewage is input into the water inlet tank 12 through the water conveying port 121, large-sized impurities contained in the sewage are intercepted on the filter screen through the filtration of the inclined filter screen 13, then the electric push rod drives the push screen 15 to transfer the large-sized impurities to the slag outlet 122, and then the large-sized impurities are conveyed into the slag collecting tank 11 through the slag collecting pipeline 16, after primary filtration is completed, the filtered sewage is conveyed into the inner centrifugal tank 52 of the purifying tank 5 through a pipeline, in the scheme, the purifying tank 5 is divided into a centrifugal area and a water purifying area by the outer centrifugal tank 53, the inner part of the outer centrifugal tank 53 is the centrifugal area, the space between the inner wall of the outer centrifugal tank 53 and the inner wall of the purifying tank 5 is the water purifying area, the rotating motor 54 is connected with the bottom of the inner centrifugal tank 52 through a shaft and is fixedly connected with the outer centrifugal tank 53 through the outer wall of the rotating motor 54, after a flocculating agent in the liquid medicine tank 23 is input into the inner centrifugal tank 52, the rotating motor, the outer centrifugal box 53 keeps the position unchanged, because the side wall of the inner centrifugal box 52 is provided with the centrifugal through hole 521, when the inner centrifugal box 52 rotates, the flocculating agent reacts with the sewage in the inner centrifugal box 52 and forms a precipitate, small particle impurities contained in the sewage and flocculation products reacted with the flocculating agent are intercepted in the inner centrifugal box 52, the impurities which do not penetrate through the centrifugal through hole 521 settle at the bottom of the inner centrifugal box 52 under the action of centrifugal force, the impurities or sludge are pumped into the sludge box 71 through the sludge pumping pipe 7, the sewage treated by the inner centrifugal box 52 enters the accommodating space between the inner centrifugal box 52 and the outer centrifugal box 53 through the centrifugal through hole 521 and flows into a water purification area through the drainage through hole 531 at the lower end of the side wall of the outer centrifugal box 53, because the sewage treated by the inner centrifugal box 52 is continuously discharged into the water purification area until the sewage contacts the water filtering plate 56 provided with the filtering holes 562, the filtering holes 562 can be selected to be in the micron level according to actual requirements, the sewage treated by the inner centrifugal box 52 is filtered by the filtering holes 562 of the water filtering plate 56, the water level continues to rise, the position above the water filtering plate 56 is purified water, the position below the water filtering plate 56 is intercepted water, the intercepted impurities in the water are concentrated impurities in the sewage treated by the inner centrifugal box 52, the impurity particles are further reduced and reduced relative to the impurity particles in the inner centrifugal box 52 and are settled at the bottom of the purifying box 5 under the action of gravity, when the impurities need to be pumped out, when the bottom of the purifying box 5 bears certain impurities or the pressure of the water filtering plate 56 rises after the filtering holes 562 are blocked, the pressure valve 73 is opened or manually opened through a common valve, the impurities at the bottom of the purifying box 5 are led into the sludge box 71, and the purified water is discharged through the water outlet pipe 21 of the purifying box, and all the pipelines in the scheme are provided with power pumps externally connected with the pipelines, provides corresponding pumping and sucking power for the pipeline.

In addition, this scheme can also wash purifying box 5 because impurity is too many and blocks up, and specific process is as follows: when the pressure sensor senses that the pressure exceeds a set range, or the water yield of the atomizing pipe is reduced by naked eyes, or the pressure valve 73 is continuously opened, the situation that the water filtering plate 56 is blocked and needs to be cleaned in time is considered, in the scheme, the set threshold value of the pressure valve 73 is far higher than the alarm threshold value of the pressure sensor, when the water filtering plate 56 is blocked, water is stopped from entering the water inlet tank 12, when the water filtering plate 56 is blocked, the pressure sensed by the pressure sensor is increased, the sensed pressure is transmitted to the PLC 91 and is converted into a digital signal, whether the power supply 9 connected with the electric telescopic rod 8 needs to be started or not is judged by setting the digital signal sensed by the PLC 91, when the pressure is increased to a certain value, the power supply 9 is started, the electric telescopic rod 8 starts to move downwards, and the blocked water filtering plate 56 is continuously pushed to move downwards, the scheme can be changed into the scheme that the electric device manually applies pressure to push the water filtering plate 56 to move downwards, the pressure in the purified water area is increased, the trapped water in the purified water area flows back to the accommodating space between the outer centrifugal box 53 and the inner centrifugal box 52 through the drainage through hole 531 due to the increased pressure, the inner wall of the inner centrifugal box 52 and the inner wall of the outer centrifugal box 53 cause the blockage phenomenon that the centrifugal through hole 521 is close to the inner wall of the inner centrifugal box 52 and the drainage water passes through the side close to the inner wall of the outer centrifugal box 53 due to the long-term contact with the sludge or impurities, but through the above process, the trapped water can flow back to the inner centrifugal box 52 through the centrifugal through hole 521, dilute the underground sewage in the inner centrifugal box 52, disperse the dirt originally attached to the drainage through hole 531 and the centrifugal through hole 521, further perform back cleaning on the inner centrifugal box 52 until the filter plate 56 contacts the brush head of the rotary brush 553, start the motor 557 of the rotary shaft to start to brush the filter holes 562 of the filter plate 56, complete the cleaning of, the rotating motor 54 connected with the bottom of the inner centrifugal box 52 and the air pump connected with the sludge pumping pipe 7 are started, the sludge of the inner centrifugal box 52 is led into the sludge box 71 through the sludge pumping pipe 7, a space for holding the intercepted water is further vacated for the inner centrifugal box 52, the solubility of impurities is increased and dirt attached to the drainage through hole 531 and the centrifugal through hole 521 is dispersed through the intercepted water and the diluted sewage, then the inner centrifugal box 52 is back-cleaned, the problem of blocking of the hole walls of the inner centrifugal box 52 and the outer centrifugal box 53 is relieved, when the inner centrifugal box 52 overflows or the sludge pumped out by the sludge pumping pipe 7 is thinner, the blocking of the centrifugal through hole 521 of the inner centrifugal box 52 is considered, the power supply 9 of the electric telescopic rod 8 can be manually started for cleaning by the same method, and when the water filtering plate 56, the inner centrifugal box 52 and the outer centrifugal box 53 are cleaned, the water filtering plate 56 is released, and the water inlet tank 12 is opened to perform a new cycle of sewage treatment.

Specific embodiments of the present invention have been described above in detail.

It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, any technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments in the prior art based on the inventive concept should be within the scope of protection defined by the claims.

Claims

1. The sewage treatment equipment is characterized by comprising a water inlet device (1) and a wastewater pretreatment device (2), wherein the water inlet device (1) comprises a slag collecting box (11), a water inlet box (12) provided with a water conveying port (121) and a slag outlet (122), an inclined filter screen (13) and an inclined electric push rod (14) which are arranged in the water inlet box (12), the end part of the inclined electric push rod (14) is fixedly connected with a pushing screen (15), the slag outlet (122) is arranged above the inclined filter screen (13), the slag outlet (122) is communicated with the slag collecting box (11) through a slag collecting pipeline (16), the wastewater pretreatment device (2) comprises a water outlet pipe (21), a water inlet pipe (22), a purification box (5) and a liquid medicine box (23), the water inlet pipe (22) is communicated with the top of the purification box (5) and the bottom of the water inlet box (12), and the liquid medicine box (23) is communicated with the purification box (5) through a liquid medicine pipeline, be equipped with centrifugal box (51) in purifying box (5), centrifugal box (51) are including interior centrifugal box (52) and outer centrifugal box (53), interior centrifugal box (52) bottom is connected with rotating electrical machines (54), inlet tube (22) run through the roof of interior centrifugal box (52), outlet pipe (21) run through first lateral wall (55) of purifying box (5), first lateral wall (55) of purifying box (5) with be equipped with drainage board (56) between outer centrifugal box (53) the lateral wall, drainage board (56) both ends are equipped with smooth support (561), drainage board (56) are equipped with filtration hole (562), the lateral wall upper end of outer centrifugal box (53) and first lateral wall (55) of purifying box (5) all be equipped with spout (563) that smooth support (561) looks adaptation.

2. The sewage treatment apparatus according to claim 1, wherein the inner centrifugal box (52) is provided with a centrifugal through hole (521) on the side wall, the outer centrifugal box (53) is provided with a drainage through hole (531) on the lower end of the side wall, and an accommodating space is provided between the inner centrifugal box (52) and the outer centrifugal box (53).

3. Sewage treatment plant according to claim 1, characterised in that said first side wall (55) of said purification tank (5) and said outer centrifugal tank (53) side wall are each fixed with a stop (6) for stopping said draining plate (56).

4. The sewage treatment device according to claim 1, wherein a first insertion hole (551) is formed in a first side wall (55) of the purification box (5), a second insertion hole (552) is formed in each side wall of the outer centrifugal box (53), a rotating brush (553) is arranged between the first insertion hole (551) and the second insertion hole (552), the rotating brush (553) comprises a rotating shaft and a brush head fixedly connected to the periphery of the rotating shaft, the rotating shaft is inserted between the first insertion hole (551) and the second insertion hole (552), the rotating shaft is electrically connected with a motor (557), and a silicone gasket (558) is arranged between the motor (557) and the first side wall (55) of the purification box (5).

5. Sewage treatment plant according to claim 1, characterised in that a sludge suction pipe (7) is connected to the top wall of said inner centrifugal box (52), said sludge suction pipe (7) being connected to a sludge tank (71), said sludge tank (71) being connected to an air pump.

6. Sewage treatment plant according to claim 5, characterised in that said second side wall (72) of said purification tank (5) is provided with a pressure valve (73), a sludge conduit (74) communicating with said pressure valve (73), said sludge conduit (74) penetrating at one end through said second side wall (72) of said purification tank (5) and at the other end through a side wall of said sludge tank (71).

7. The sewage treatment device according to claim 3, wherein the position-limiting member (6) is a pressure sensor, an electric telescopic rod (8) is arranged at the upper end of the water filtering plate (56), the electric telescopic rod (8) penetrates through the top wall of the purification box (5), the electric telescopic rod (8) and the pressure sensor are connected in parallel with a power supply (9), and a PLC (programmable logic controller) 91 is arranged between the pressure sensor and the power supply (9).

8. Sewage treatment plant according to claim 1, characterised in that said pushing net (15) is perpendicular to said filtering net.

9. Sewage treatment plant according to claim 1, characterised in that a stirring paddle (10) is connected to said rotating electrical machine (54), said stirring paddle (10) being arranged inside said inner centrifugal box (52).