CN108947117B

CN108947117B - Sewage purification treatment device of municipal sewage pipe network

Info

Publication number: CN108947117B
Application number: CN201810766424.7A
Authority: CN
Inventors: 杜佳儒; 黄晓秋; 夏云弟; 朱陈伟; 黄国康; 杜佳龙
Original assignee: Yongjia County Chengdong Municipal Construction Co ltd
Current assignee: Yongjia County Chengdong Municipal Construction Co ltd
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2021-02-02
Anticipated expiration: 2038-07-12
Also published as: CN108947117A

Abstract

The invention relates to the technical field of sewage treatment, and aims to provide a sewage purification treatment device for a municipal sewage pipe network, which comprises a crushing tank, a sedimentation tank, a biodegradation tank and a sludge tank; a water inlet pipe is arranged at the top of the crushing tank, a water outlet pipe communicated with the sedimentation tank is arranged at the bottom of the crushing tank, and a heavy crushing disc and a light crushing disc are sequentially arranged in the crushing tank from top to bottom; the heavy crushing disc is provided with a plurality of paddles, and sewage enters the crushing tank and then impacts the paddles to provide pushing force for the heavy crushing disc. Utilize heavy crushing dish and light crushing dish to carry out shredding to the sewage that gets into crushing jar successively, and utilize sewage to strike produced driving force of paddle and the energy that heavy crushing dish stored under gear motor drives, still can overcome a large amount of resistances that produce when rotating after gear motor stops the drive, make heavy crushing dish and light crushing dish keep or last long-time rotation, thereby alleviate gear motor's burden, make gear motor can obtain abundant cooling time, and then increase of service life.

Description

Sewage purification treatment device of municipal sewage pipe network

Technical Field

The invention relates to the technical field of sewage treatment, and aims to provide a sewage purification treatment device for a municipal sewage pipe network.

Background

The problem of sewage treatment is increasingly receiving high attention from society. With the progress of urbanization and the development of industrial society, on one hand, the water consumption is continuously increased, and the water resource is increasingly in short supply, and on the other hand, the sewage discharge amount is increasingly increased, and the environmental pollution is increasingly serious. Therefore, the urban sewage treatment system is the key to solve the problems of insufficient water resources and serious environmental pollution.

At present, a chinese patent document with application publication No. CN106746187A in the prior art discloses a sewage purification treatment device for municipal sewage pipe network, which comprises a settling tank and a crushing tank, wherein a sewage branch pipe communicated with a sewer is arranged at the top of the crushing tank, a first motor and a second motor are arranged at one side of the crushing tank, rotating rods penetrating through the crushing tank are arranged at the right sides of the first motor and the second motor, and crushing hammers are arranged on the rotating rods; the sedimentation tank is connected to the bottom of the crushing tank, the bottom of the sedimentation tank is communicated with a sludge collecting pipe, and one side of the sedimentation tank is communicated with the biodegradation tank. The solid garbage in the sewage is subjected to biodegradation after being crushed by the high-speed rotation of the crushing hammer, so that the biodegradation speed in a subsequent biodegradation tank is increased.

However, domestic sewage is continuous, and the crushing tank is required to be uninterruptedly crushed for a long time, so that the first motor and the second motor must be kept operating for a long time, the energy consumption is high, and the service life of the motor is shortened due to excessive heating.

Disclosure of Invention

The invention aims to provide a sewage purification treatment device of a municipal sewage pipe network, which has the effects of saving energy consumption and prolonging the service life of a motor.

The technical purpose of the invention is realized by the following technical scheme:

a sewage purification treatment device of a municipal sewage pipe network comprises a crushing tank, a sedimentation tank, a biodegradation tank and a sludge tank; a water inlet pipe is arranged at the top of the crushing tank, a water outlet pipe communicated with the sedimentation tank is arranged at the bottom of the crushing tank, and a heavy crushing disc and a light crushing disc are sequentially arranged in the crushing tank from top to bottom along the axial lead; a driving device is arranged in the crushing tank, the driving device comprises a driving shaft and a speed reduction motor, the driving shaft can drive the light crushing disc to rotate, and the driving shaft is connected with the heavy crushing disc through a speed reducer; the heavy crushing disc is provided with a plurality of paddles, and sewage enters the crushing tank and then impacts the paddles to provide pushing force for the heavy crushing disc.

By adopting the technical scheme, the sewage entering the crushing tank is crushed by utilizing the heavy crushing disc and the light crushing disc, wherein the heavy crushing disc has larger mass and rotary inertia than the light crushing disc and is used for crushing solid garbage with larger mass or firmer solid garbage in the sewage, and the light crushing disc has higher rotating speed than the light crushing disc and is used for further crushing the crushed garbage; and the driving force generated by the sewage impact paddle and the energy stored by the heavy crushing disk under the driving of the reducing motor can still overcome a large amount of resistance generated during rotation after the reducing motor stops driving, so that the heavy crushing disk and the light crushing disk are kept or continuously rotated for a long time, the burden of the reducing motor is reduced, the reducing motor can obtain sufficient cooling time, and the service life is prolonged.

The invention is further configured to: the number of the water inlet pipes is at least two and the water inlet pipes are uniformly distributed along the circumferential direction; the inlet tube is rotationally symmetrical along the tangential direction of the surface of the crushing tank.

By adopting the technical scheme, the sewage entering the crushing tank can spirally flow along the inner wall of the crushing tank, so that the sewage can push the blades in one direction to provide kinetic energy for the rotation of the heavy crushing disc; and the force that each paddle received is more balanced for many inlet tubes of evenly arranging along the circumferencial direction, has increased the thrust that heavy crushing dish received simultaneously.

The invention is further configured to: at least one spiral groove is formed in the inner wall of the crushing tank along the water inlet direction of the water inlet pipe, and an upper annular crushing groove and a lower annular crushing groove are formed in the inner wall of the crushing tank and correspond to the heavy crushing disc and the light crushing disc respectively; the heavy crushing disc comprises an annular flywheel, and a plurality of crushing blocks extending into the upper crushing groove are uniformly arranged on the outer side of the flywheel along the circumference; the light crushing disc comprises an annular rotating wheel, and a plurality of crushing blocks extending into the lower crushing groove are uniformly arranged on the outer side of the rotating wheel along the circumference.

Through adopting above-mentioned technical scheme, utilize the helicla flute to make sewage further be the heliciform and flow, and the great solid waste of quality can paste crushing jar inner wall along the helicla flute motion, and broken piece is circular motion with crushing piece along last crushing groove with lower crushing groove respectively, when solid waste in the sewage passes through last crushing groove or crushing groove down along the helicla flute, because broken piece and crushing piece and helicla flute between constantly crisscross, thereby utilize crisscross process to extrude solid waste and smash.

The invention is further configured to: the heavy crushing disc also comprises a coarse filtering plate arranged in the middle of the flywheel, a plurality of coarse filtering holes are formed in the coarse filtering plate, and the paddles are uniformly arranged on the upper surface of the coarse filtering plate along the circumference; the light crushing disc also comprises a fine filter screen arranged in the middle of the rotating wheel.

By adopting the technical scheme, the solid garbage with larger volume is intercepted by the coarse filter plate, so that the solid garbage can enter the lower layer only after the broken fragments are crushed; similarly, the solid garbage in the sewage can pass through the fine filter screen after being further crushed by the crushing block.

The invention is further configured to: the coarse filter plate and the fine filter screen are both conical with upward tips.

Through adopting above-mentioned technical scheme, the solid rubbish that utilizes the coarse filtration board of taper and thin filter screen to make in the sewage can be along the conical surface inclined downward motion to last crushing tank and lower crushing tank after being intercepted to utilize constantly washing away of sewage, can effectively avoid the phenomenon of coarse filtration board and thin filter screen jam to take place.

The invention is further configured to: the top end of the coarse filter plate is provided with a driving disc connected with the speed reducer, and the top end of the fine filter plate is provided with a first driving ring in key connection with the driving shaft; the inner side of the rotating wheel is provided with a plurality of fixing rods towards the direction of the driving shaft, and the end parts of the fixing rods are provided with a second driving ring in key connection with the driving shaft.

By adopting the technical scheme, when the driving shaft rotates, the driving disc is utilized to drive the coarse filter plate to rotate, and the flywheel can synchronously rotate under the driving of the coarse filter plate; because the structure of the fine filter screen is not firm enough, the upper end part of the fine filter screen is driven to rotate by the first driving ring, and the rotating wheel is driven to synchronously rotate by the second driving ring.

The invention is further configured to: a plurality of upper cutting blocks and a plurality of lower cutting blocks are respectively arranged in the upper crushing groove and the lower crushing groove along the circumferential direction; the upper cutting groove divides the crushing block into an upper cutting block and a lower cutting block which are matched with the upper cutting block, and the lower cutting block divides the crushing block into an upper cutting block and a lower cutting block which are matched with the lower cutting block.

Through adopting above-mentioned technical scheme, when broken piece and crushing piece do circular motion along last crushing tank and lower crushing tank respectively, go up between cutting piece and the broken piece, cut piece and crushing piece down and between all constantly carry out crisscross cutting to the crushing ability of heavy crushing dish with light crushing dish has been strengthened, makes the solid rubbish of process smashed more thoroughly.

The invention is further configured to: the crushing tank comprises an upper tank body, a connecting body and a lower tank body which are sequentially arranged from top to bottom, and the upper crushing tank and the lower crushing tank are respectively arranged at the topmost end of the connecting body and the topmost end of the lower tank body; the upper cutting block and the lower cutting block are respectively arranged with the broken fragments and the crushing blocks in a staggered mode along the circumferential direction.

By adopting the technical scheme, the upper crushing groove and the lower crushing groove are respectively arranged at the topmost end of the linking body and the topmost end of the lower tank body, and the upper cutting block and the lower cutting block are respectively arranged in a staggered manner along the circumferential direction with the broken blocks and the crushing blocks, so that the heavy crushing disc and the light crushing disc can be easily and respectively installed into the upper crushing groove and the lower crushing groove, and only the lower tank body, the light crushing disc, the linking body, the heavy crushing disc and the upper tank body need to be sequentially installed from bottom to top during installation, and the operation is simple and convenient.

The invention is further configured to: the upper tank body is provided with a first outer annular edge at the bottom, the upper end of the connecting body is provided with a first inner annular edge matched with the first outer annular edge, the bottom of the connecting body is provided with a second outer annular edge, and the top end of the lower tank body is provided with a second inner annular edge matched with the second outer annular edge.

Through adopting above-mentioned technical scheme, utilize the cooperation between first outer ring limit and first inner ring limit, second outer ring limit and the second inner ring limit to make and go up the jar body, link up the body and can link up firmly between the jar body down.

The invention is further configured to: a rotating speed sensor is arranged on the driving shaft; the driving device further comprises a clutch arranged between the speed reducing motor and the driving shaft.

By adopting the technical scheme, the clutch is utilized to enable the driving shaft and the reducing motor to have two states of linkage and non-linkage, and after the reducing motor is closed, the clutch is controlled to enter the non-linkage state, so that the driving shaft can continue to rotate without influencing the reducing motor; the rotating speed sensor is used for monitoring the rotating speed of the driving shaft, when the rotating speed reaches a preset minimum value, the speed reducing motor is started, and the clutch is controlled to enter a linkage state, so that the rotating speed of the driving shaft is increased by using the speed reducing motor, and the driving shaft is not static during linkage, so that the burden of the clutch and the speed reducing motor is greatly reduced; when the rotating speed reaches the preset maximum value, the speed reducing motor is turned off, and the heavy crushing disk and the light crushing disk continue to rotate under the inertia effect and the driving force of the sewage.

In conclusion, the beneficial effects of the invention are as follows:

1. the sewage entering the crushing tank is crushed by utilizing a heavy crushing disc and a light crushing disc in sequence, wherein the heavy crushing disc has larger mass and rotary inertia than the light crushing disc and is used for crushing solid garbage with larger mass or firmer quality in the sewage, and the light crushing disc has higher rotating speed than the light crushing disc and is used for further crushing the crushed garbage; the driving force generated by the sewage impacting the paddle and the energy stored by the heavy crushing disc under the driving of the speed reducing motor can still overcome a large amount of resistance generated during rotation after the speed reducing motor stops driving, so that the heavy crushing disc and the light crushing disc can be kept or continuously rotated for a long time, the burden of the speed reducing motor is reduced, the speed reducing motor can obtain sufficient cooling time, and the service life is prolonged;

2. the clutch is utilized to enable the driving shaft and the speed reducing motor to have two states of linkage and non-linkage, and when the speed reducing motor is closed, the clutch is controlled to enter the non-linkage state, so that the driving shaft can continue to rotate without influencing the speed reducing motor; the rotating speed sensor is used for monitoring the rotating speed of the driving shaft, when the rotating speed reaches a preset minimum value, the speed reducing motor is started, and the clutch is controlled to enter a linkage state, so that the rotating speed of the driving shaft is increased by using the speed reducing motor, and the driving shaft is not static during linkage, so that the burden of the clutch and the speed reducing motor is greatly reduced; when the rotating speed reaches the preset maximum value, the speed reducing motor is turned off, and the heavy crushing disk and the light crushing disk continue to rotate under the inertia effect and the driving force of the sewage.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the construction of the crush can of the present invention;

FIG. 3 is a schematic cross-sectional view of the crush can of the present invention;

fig. 4 is a schematic diagram of an exploded structure of the crush can of the present invention.

Reference numerals: 1. a grinding tank; 11. a water inlet pipe; 12. a water outlet pipe; 13. a helical groove; 14. a heavy crushing disc; 141. feeding the mixture into a crushing tank; 1411. an upper cutting block; 142. a flywheel; 1421. breaking the fragments; 1422. cutting the groove on the substrate; 143. a coarse filter plate; 144. a drive disc; 145. a paddle; 15. a light crushing disc; 151. a lower crushing tank; 1511. a lower cutting block; 152. a rotating wheel; 1521. crushing the blocks; 1522. a lower cutting groove; 153. a fine filter screen; 154. a first drive ring; 155. fixing the rod; 156. a second drive ring; 157. a material reducing tank; 16. a drive device; 161. a drive shaft; 162. a reduction motor; 163. a speed reducer; 164. a clutch; 165. a rotational speed sensor; 17. feeding the tank body; 171. a first outer annular edge; 18. an adaptor body; 181. a first inner annular edge; 182. a second outer annular edge; 19. a tank body is arranged; 191. a second inner annular edge; 2. a sedimentation tank; 21. a sludge pipe; 22. a water pipe; 23. separating the filter screen; 24. a blow-off pipe; 241. opening and closing a valve; 242. a sludge pump; 3. a biodegradation tank; 4. a sludge tank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a sewage purification treatment device of municipal sewage pipe network, as shown in fig. 1, including the crushing jar 1 that is used for smashing the solid waste in the sewage, the sedimentation tank 2 with solid waste and sewage separation, the biodegradation tank 3 that degrades the organic pollutant in the sewage, the sludge impoundment 4 that is used for collecting the solid waste after smashing.

As shown in fig. 2 and 3, four water inlet pipes 11 are uniformly connected to the side wall of the top of the crushing tank 1 along the circumferential direction, and a water outlet pipe 12 communicated with the top end of the sedimentation tank 2 is connected to the bottom of the crushing tank 1. Wherein four inlet tubes 11 all set up along the tangential direction rotational symmetry on crushing jar 1 surface, and smash and to have seted up four helicla flutes 13 along the inlet direction correspondence of inlet tube 11 on 1 inner wall of jar, make the sewage that gets into crushing jar 1 can be the heliciform along crushing jar 1 inner wall and flow, and the great solid waste of quality can paste 1 inner wall of crushing jar and move along helicla flute 13. A heavy crushing disc 14 and a light crushing disc 15 are sequentially arranged in the crushing tank 1 from top to bottom along the axial lead, annular upper crushing grooves 141 and annular lower crushing grooves 151 are respectively formed in the inner wall of the crushing tank 1 corresponding to the heavy crushing disc 14 and the light crushing disc 15, and the upper crushing grooves 141 and the lower crushing grooves 151 are arranged in a staggered mode with the spiral grooves 13; the heavy crushing disk 14 comprises an annular flywheel 142, and a plurality of crushing blocks 1421 extending into the upper crushing groove 141 are uniformly fixed on the outer side of the flywheel 142 along the circumference; the light crushing disk 15 includes an annular runner 152, and a plurality of crushing blocks 1521 extending into the lower crushing groove 151 are uniformly fixed on the outer side of the runner 152 along the circumference. When the solid waste in the sewage passes through the upper pulverizing groove 141 or the lower pulverizing groove 151 along the spiral groove 13, the crushing blocks 1421 and the pulverizing blocks 1521 are continuously staggered with respect to the spiral groove 13, so that the solid waste is crushed by the staggered process.

As shown in fig. 4, a plurality of upper cutting blocks 1411 and lower cutting blocks 1511 are respectively fixed in the upper pulverizing groove 141 and the lower pulverizing groove 151 along the circumferential direction, an upper cutting groove 1422 and a lower cutting groove 1522 are respectively formed on the crushing block 1421 and the pulverizing block 1521, the upper cutting groove 1422 divides the crushing block 1421 into an upper block and a lower block which are matched with the upper cutting block 1411, and the lower cutting block 1511 likewise divides the pulverizing block 1521 into an upper block and a lower block which are matched with the lower cutting block 1511. When the crushing blocks 1421 and the crushing blocks 1521 respectively do circular motion along the upper crushing groove 141 and the lower crushing groove 151, the staggered cutting is continuously performed between the upper cutting blocks 1411 and the crushing blocks 1421 and between the lower cutting blocks 1511 and the crushing blocks 1521, so that the crushing capability of the heavy crushing disk 14 and the light crushing disk 15 is enhanced, and the passing solid garbage is crushed more thoroughly.

As shown in fig. 3, the heavy crushing disc 14 further includes a coarse filtering plate 143 fixed in the middle of the flywheel 142 and having a plurality of coarse filtering holes on the surface thereof, the coarse filtering plate 143 is in a cone shape with an upward tip, and a driving disc 144 is fixed at the top end thereof; the light crushing disk 15 further comprises a fine filter screen 153 which is fixed in the middle of the rotating wheel 152 and is also tapered, and a first driving ring 154 is fixed at the top end of the fine filter screen 153. The coarse filter plate 143 is used for intercepting the solid garbage with larger volume, so that the solid garbage can enter the lower layer only after being crushed by the crushing block 1421; similarly, the fine filter screen 153 is used to enable the solid waste in the sewage to pass through after further crushing by the crushing block 1521. The solid garbage in the sewage can obliquely move downwards along the conical surface to the upper crushing tank 141 and the lower crushing tank 151 after being intercepted by the conical coarse filter plate 143 and the conical fine filter 153, and the blockage of the coarse filter plate 143 and the conical fine filter 153 can be effectively avoided by continuously flushing the sewage.

As shown in fig. 3, a driving device 16 is provided in the grinding tank 1, the driving device 16 includes a driving shaft 161 passing through the first driving ring 154 from bottom to top and being keyed, a speed reduction motor 162 capable of controlling the driving shaft 161 to rotate, and the driving shaft 161 and the driving disc 144 are connected by a speed reducer 163; four fixing rods 155 are uniformly fixed on the inner side of the runner 152 towards the direction of the driving shaft 161, and a second driving ring 156 which is in key connection with the driving shaft 161 is fixed at the end parts of the fixing rods 155. When the driving shaft 161 rotates, the driving disc 144 is used to drive the coarse filter plate 143 to rotate, and the flywheel 142 can be driven by the coarse filter plate 143 to synchronously rotate; since the fine filter 153 is not strong enough in structure, the upper end portion of the fine filter 153 is rotated by the first drive ring 154, and the runner 152 is rotated synchronously by the second drive ring 156.

As shown in fig. 3, the flywheel 142 has a larger mass, and the bottom of the runner 152 is provided with the relief groove 157, so that the mass of the flywheel 142 is larger than that of the runner 152, and therefore, the heavy crushing disc 14 has a larger mass and a larger rotational inertia than the light crushing disc 15, and can crush the solid waste with a larger mass or stronger solid waste in the sewage; and the light crushing disk 15 has a faster rotation speed than the crushing disk 14 by the reducer 163, and is used for further crushing the crushed garbage.

As shown in fig. 4, a plurality of paddles 145 are uniformly fixed on the upper surface of the coarse filter plate 143 along the circumference, and when sewage enters the crushing tank 1, the sewage flows spirally along the inner wall of the crushing tank 1, and impacts the paddles 145 toward one direction, so that additional kinetic energy can be provided for the rotation of the heavy crushing disk 14, and the four water inlet pipes 11 uniformly arranged along the circumference direction make the force received by each paddle 145 more balanced, and simultaneously increase the thrust received by the heavy crushing disk 14. And the driving force generated by the sewage impact paddle 145 and the energy stored by the heavy crushing disk 14 under the driving of the reducing motor 162 can still overcome a large amount of resistance generated during rotation after the reducing motor 162 stops driving, so that the heavy crushing disk 14 and the light crushing disk 15 are kept or continuously rotated for a long time, the burden of the reducing motor 162 is reduced, the reducing motor 162 can obtain sufficient cooling time, and the service life is prolonged.

As shown in fig. 3 and 4, the driving device 16 further includes a clutch 164 installed between the reduction motor 162 and the driving shaft 161, the clutch 164 enables two states of interlocking and non-interlocking to exist between the driving shaft 161 and the reduction motor 162, and after the reduction motor 162 is turned off, the clutch 164 is controlled to enter the non-interlocking state, so that the driving shaft 161 can continue to rotate without affecting the reduction motor 162. The bottom of the driving shaft 161 is also provided with a rotating speed sensor 165, the rotating speed of the driving shaft 161 is monitored by the rotating speed sensor 165, when the rotating speed reaches a preset lowest value, the speed reducing motor 162 is started, and the clutch 164 is controlled to enter a linkage state, so that the rotating speed of the driving shaft 161 is increased by the speed reducing motor 162, and the burden of the clutch 164 and the speed reducing motor 162 is greatly reduced because the driving shaft 161 is not static during linkage; when the rotating speed reaches the preset maximum value, the speed reducing motor 162 is turned off, the heavy crushing disk 14 and the light crushing disk 15 continue to rotate under the inertia effect and the driving force of the sewage, and the solid garbage in the sewage is kept crushed.

As shown in fig. 4, the pulverizing tank 1 includes an upper tank 17, a connecting body 18 and a lower tank 19 sequentially arranged from top to bottom, wherein a first outer ring edge 171 is fixed on the outer side of the bottom of the upper tank 17, a first inner ring edge 181 matched with the first outer ring edge 171 is fixed on the inner side of the upper end of the connecting body 18, a second outer ring edge 182 is fixed on the outer side of the bottom, a second inner ring edge 191 matched with the second outer ring edge 182 is fixed on the inner side of the top end of the lower tank 19, and the first outer ring edge 171 and the first inner ring edge 181, the second outer ring edge 182 and the second inner ring edge 191 which are mutually attached are respectively fixed by bolts, so that the upper tank 17, the connecting body 18 and the lower tank 19 can be stably connected. The upper crushing groove 141 and the lower crushing groove 151 are respectively arranged on the inner side of the first inner annular edge 181 at the topmost end of the connecting body 18 and the inner side of the second inner annular edge 191 at the topmost end of the lower tank body 19, and the upper cutting block 1411 and the lower cutting block 1511 are respectively arranged in a staggered manner along the circumferential direction with the crushing blocks 1421 and the crushing blocks 1521, so that the heavy crushing disk 14 and the light crushing disk 15 can be easily and respectively arranged in the upper crushing groove 141 and the lower crushing groove 151, and only the lower tank body 19, the light crushing disk 15, the connecting body 18, the heavy crushing disk 14 and the upper tank body 17 need to be sequentially arranged from bottom to top during installation, and the operation is simple and convenient.

As shown in fig. 1 and 3, the solid waste crushed by the heavy crushing disk 14 and the light crushing disk 15 forms sludge, and mixed with sewage, enters the sedimentation tank 2 through the water outlet pipe 12. And be connected with the sludge pipe 21 of intercommunication sludge impoundment 4 and the water pipe 22 of intercommunication biodegradable pond 3 on the sedimentation tank 2 lateral wall respectively, and sedimentation tank 2 inside slope is fixed with and separates sedimentation tank 2 for the separation filter screen 23 of two parts down left and upper right, and wherein outlet pipe 12 is connected the lower left part of sedimentation tank 2 with sludge pipe 21, and water pipe 22 is then connected the upper right part of sedimentation tank 2, and outlet pipe 12, sludge pipe 21, water pipe 22 arrange from last to bottom in proper order. When sewage with sludge continuously enters the sedimentation tank 2, the water level rises along with the sewage, the sewage enters the biodegradation tank 3 through the water pipe 22 for degradation, and the sludge stays in the sedimentation tank 2 under the obstruction of the separation filter screen 23; when the sludge is accumulated and ascended to the position of the sludge pipe 21, the sludge enters the sludge tank 4 through the sludge pipe 21, and the sedimentation tank 2 is prevented from being filled with the sludge. The horizontal height of the sludge pipe 21 is higher than that of the water passing pipe 22, so that the waste of water resources caused by the fact that a large amount of sewage enters the sludge tank 4 can be avoided.

As shown in fig. 1, sedimentation tank 2 bottom is hopper-shaped and is connected with the blow off pipe 24 of intercommunication sludge impoundment 4 in the bottommost, and install on the blow off pipe 24 on open-close valve 241 and sludge pump 242, regularly will open the mud of opening-close valve 241 and sludge pump 242 to sedimentation tank 2 bottom and handle, can effectively reduce bacterial growing, and when sedimentation tank 2 interior mud is too much, can't in time discharge through sludge pipe 21, also can strengthen blowdown effect through blow off pipe 24.

The specific operation flow of the crushing tank in this embodiment is as follows:

firstly, the driving shaft 161 is controlled by the speed reducing motor 162 to rotate, so as to drive the light crushing disc 15 and the heavy crushing disc 14 to rotate at different speeds, simultaneously, the sewage enters the crushing tank 1 through the water inlet pipe 11 and spirally flows along the inner wall of the crushing tank 1, the solid garbage in the sewage is blocked by the coarse filter plate 143 and the fine filter plate 153 in sequence and respectively enters the upper crushing tank 141 and the lower crushing tank 151, and the crushing blocks 1421 and the crushing blocks 1521 are continuously staggered with the spiral groove 13, so as to extrude and crush the solid garbage;

the spirally entering sewage can generate thrust on the blades 145 to provide additional kinetic energy for the rotation of the heavy crushing disc 14; when the rotation speed sensor 165 detects that the driving shaft 161 rotates to a certain speed, the speed reducing motor 162 stops operating, the clutch 164 is controlled to enter a non-linkage state, and a large amount of resistance generated during rotation is overcome under the action of the driving force generated by the sewage impacting blades 145 and the energy stored by the heavy crushing disk 14 under the driving of the speed reducing motor 162, so that the heavy crushing disk 14 and the light crushing disk 15 can keep or continuously rotate for a long time, the load of the speed reducing motor 162 is reduced, the speed reducing motor 162 can be cooled for a sufficient time, and the service life is prolonged; when the rotation speed reaches a predetermined minimum value, the reduction motor 162 is started and the clutch 164 is controlled to enter the linkage state, so that the rotation speed of the driving shaft 161 is raised by the reduction motor 162, and since the driving shaft 161 is not stationary during linkage, the burden of the clutch 164 and the reduction motor 162 is greatly reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a sewage purification treatment device of municipal administration sewer pipe network which characterized in that: comprises a crushing tank (1), a sedimentation tank (2), a biodegradation tank (3) and a sludge tank (4); a water inlet pipe (11) is arranged at the top of the crushing tank (1), a water outlet pipe (12) communicated with the sedimentation tank (2) is arranged at the bottom of the crushing tank (1), and a heavy crushing disc (14) and a light crushing disc (15) are sequentially arranged in the crushing tank (1) from top to bottom along the axial lead; a driving device (16) is arranged in the crushing tank (1), the driving device (16) comprises a driving shaft (161) and a speed reduction motor (162) which can drive the light crushing disc (15) to rotate, and the driving shaft (161) is connected with the heavy crushing disc (14) through a speed reducer (163); a plurality of paddles (145) are arranged on the heavy crushing disc (14), and sewage enters the crushing tank (1) and then impacts the paddles (145) to give a driving force to the heavy crushing disc (14); the water inlet pipes (11) are at least two and are uniformly distributed along the circumferential direction; the water inlet pipes (11) are rotationally and symmetrically arranged along the tangential direction of the surface of the crushing tank (1); at least one spiral groove (13) is formed in the inner wall of the crushing tank (1) along the water inlet direction of the water inlet pipe (11), and an upper annular crushing groove (141) and a lower annular crushing groove (151) are respectively arranged corresponding to the heavy crushing disc (14) and the light crushing disc (15); the heavy crushing disc (14) comprises an annular flywheel (142), and a plurality of crushing blocks (1421) extending into the upper crushing groove (141) are uniformly arranged on the outer side of the flywheel (142) along the circumference; the light crushing disc (15) comprises an annular rotating wheel (152), and a plurality of crushing blocks (1521) extending into the lower crushing groove (151) are uniformly arranged on the outer side of the rotating wheel (152) along the circumference.

2. The municipal sewer network sewage purification treatment plant of claim 1, wherein: the heavy crushing disc (14) further comprises a coarse filtering plate (143) arranged in the middle of the flywheel (142), a plurality of coarse filtering holes are formed in the coarse filtering plate (143), and the blades (145) are uniformly arranged on the upper surface of the coarse filtering plate (143) along the circumference; the light crushing disc (15) also comprises a fine filter screen (153) arranged in the middle of the rotating wheel (152).

3. The municipal sewer network sewage purification treatment plant of claim 2, wherein: the coarse filter plate (143) and the fine filter screen (153) are both in a cone shape with the tip upwards.

4. The municipal sewer network sewage purification treatment plant of claim 3, wherein: a driving disc (144) connected with a speed reducer (163) is arranged at the top end of the coarse filter plate (143), and a first driving ring (154) connected with a driving shaft (161) in a key manner is arranged at the top end of the fine filter screen (153); a plurality of fixing rods (155) are arranged on the inner side of the rotating wheel (152) towards the direction of the driving shaft (161), and a second driving ring (156) in key connection with the driving shaft (161) is arranged at the end part of each fixing rod (155).

5. The municipal sewer network sewage purification treatment plant of claim 1, wherein: a plurality of upper cutting blocks (1411) and a plurality of lower cutting blocks (1511) are respectively arranged in the upper crushing groove (141) and the lower crushing groove (151) along the circumferential direction; the crushing block (1421) and the crushing block (1521) are respectively provided with an upper cutting groove (1422) and a lower cutting groove (1522), the upper cutting groove (1422) divides the crushing block (1421) into an upper cutting block and a lower cutting block which are matched with the upper cutting block (1411), and the lower cutting block (1511) divides the crushing block (1521) into an upper cutting block and a lower cutting block which are matched with the lower cutting block (1511).

6. The municipal sewer network sewage purification treatment plant of claim 5, wherein: the crushing tank (1) comprises an upper tank body (17), a connecting body (18) and a lower tank body (19) which are sequentially arranged from top to bottom, and the upper crushing tank (141) and the lower crushing tank (151) are respectively arranged at the topmost end of the connecting body (18) and the topmost end of the lower tank body (19); the upper cutting block (1411) and the lower cutting block (1511) are respectively arranged in a staggered mode with the crushing blocks (1421) and the crushing blocks (1521) along the circumferential direction.

7. The municipal sewer network sewage purification treatment plant of claim 6, wherein: go up jar body (17) bottom and be provided with first outer annular limit (171), it is provided with first inner annular limit (181) with first outer annular limit (171) complex, bottom and be provided with second outer annular limit (182) to link up body (18) upper end, jar body (19) top is provided with second inner annular limit (191) with second outer annular limit (182) complex down.

8. The municipal sewer network sewage purification treatment plant of claim 1, wherein: a rotating speed sensor (165) is arranged on the driving shaft (161); the drive device (16) further comprises a clutch (164) arranged between the reduction motor (162) and the drive shaft (161).