CN211921097U

CN211921097U - Sewage draining outlet purifying device

Info

Publication number: CN211921097U
Application number: CN201922108826.0U
Authority: CN
Inventors: 伍莉
Original assignee: Chongqing Casin Environmental Resources Co ltd
Current assignee: Chongqing Casin Environmental Resources Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-11-13
Anticipated expiration: 2029-11-29

Abstract

The utility model belongs to the technical field of environmental protection, in particular to a sewage outlet purification device, which comprises a purification box, wherein a coarse filtration chamber and a flocculation chamber are arranged in the purification box, the coarse filtration chamber comprises a first filtration screen and a push block arranged on the first filtration screen, and a slag discharge port is arranged on the side wall of the coarse filtration chamber, which is far away from the push block; the top of the flocculation chamber is provided with an opening for receiving the drainage water of the coarse filtration chamber, the flocculation chamber comprises a transverse stirring rod and a flocculant storage cavity arranged on the side wall of the flocculation chamber, one side of the stirring rod and one side of the push block are both provided with a power source, and the flocculant storage cavity is provided with an automatic discharge mechanism for controlling the flocculant to automatically discharge; the flocculation device also comprises a fine filtering chamber, wherein the inlet of the fine filtering chamber is connected with a drain hole of the flocculation chamber, and the fine filtering chamber comprises two layers of fine filtering nets and an activated carbon layer positioned between the fine filtering nets. By adopting the technical scheme, sewage is discharged into the purifying box, and each action chamber in the purifying box is utilized to realize the purification of the sewage.

Description

Sewage draining outlet purifying device

Technical Field

The utility model belongs to the technical field of the environmental protection, especially, relate to a drain purifier.

Background

Along with the continuous development of cities, the total discharge amount of urban domestic sewage is increased year by year, untreated industrial wastewater, domestic sewage, farmland drainage and other harmful substances directly or indirectly enter rivers, part of a large amount of organic matters in the sewage are decomposed by microorganisms, a large amount of dissolved oxygen in the water is consumed, the water environment is in an anaerobic or anoxic state, and anaerobic organisms are propagated in a large amount to destroy the aquatic environment. The decomposition of organic substances can generate odor gases such as methane, ammonia, hydrogen sulfide and the like, and the gases escape from the water surface, so that the water body smells and the water quality is deteriorated.

At present, in production and life, the adopted river pollution treatment mode is that sewage is discharged into a river channel, then the river is purified, and the treatment mode often causes that the speed of the river pollution is far less than the speed of the sewage discharge, so that huge pressure is caused for the treatment of the river pollution. Therefore, it is necessary to develop a sewage treatment apparatus for a sewage drain, which purifies and discharges sewage discharged from the sewage drain to reduce pollutants flowing into rivers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drain purifier carries out purification treatment through the sewage to the drain, reduces the pollutant of discharging into the river.

In order to achieve the above object, the basic scheme of the utility model is: a sewage draining outlet purifying device comprises a purifying box, wherein a coarse filtering chamber and a flocculation chamber positioned below the coarse filtering chamber are sequentially arranged in the purifying box, the coarse filtering chamber comprises a transverse first filtering net and a pushing block arranged on the first filtering net, a slag discharging port is formed in the coarse filtering chamber, the slag discharging port is positioned above the first filtering net, an inclined block is arranged between the slag discharging port and the first filtering net, and the inclined plane of the inclined block faces into the coarse filtering chamber;

the top of the flocculation chamber is provided with an opening for receiving drainage of the coarse filtration chamber, the flocculation chamber comprises a transverse stirring rod and a flocculant storage chamber arranged on the side wall of the flocculation chamber, the stirring rod is provided with a spiral fan blade, one side of the stirring rod and one side of the push block are both provided with a power source, the power source is used for driving the stirring rod and the push block to horizontally reciprocate, a transverse cavity is arranged in the bottom plate of the flocculation chamber, the cavity is provided with a drain hole, one side of the drain hole, which is close to the inside of the flocculation chamber, is provided with a second filter screen, a slide block capable of sealing the drain hole or slidably exposing the drain hole is arranged in the cavity, and;

the fine filtering chamber is connected with a drain hole of the flocculation chamber, and comprises two layers of filtering nets III and an activated carbon layer positioned between the filtering nets III.

The working principle and the beneficial effects of the basic scheme are as follows: sewage in the blowdown mouth at first gets into coarse filtration room, filter screen one intercepts most solid matter in the sewage, start the power supply that the ejector pad is connected simultaneously, power supply control ejector pad horizontal migration, thereby promote the solid matter of a filter screen interception to the sloping block of row cinder notch below on, with this reciprocating motion, thereby accumulational solid matter increases gradually on the sloping block and gets into the row cinder notch with the fixed material extrusion on sloping block top, make the solid matter part on the filter screen discharge, avoid the solid matter on the filter screen to stack too much and lead to a filter screen to block up, guarantee a filter screen normal play water.

Then, in the sewage after filter screen one filters gets into the flocculation chamber from the open-top of flocculation chamber, start the power supply that the poking bar is connected this moment, the flocculating agent is deposited the chamber and is passed through manual or automatic mechanism and release the flocculating agent in to the flocculation chamber simultaneously, the power supply that the poking bar is connected drives poking bar horizontal reciprocating motion and makes sewage and flocculating agent intensive mixing, be equipped with helical fan blade on the poking bar in addition, helical fan blade has increased the area of contact with water, more do benefit to the sewage in the stirring flocculation chamber, improve the mixing effect of sewage and flocculating agent. Simultaneously spiral fan blade removes the in-process and can collude the floe that floats in the room of flocculation and link on the flabellum, avoids the floe to float too much and cause the hindrance to the drainage of wash port, and most floe twine on the poking bar, only need take out the poking bar and just can clear up most flocculated impurity, makes the clearance room of flocculation more convenient. And starting the control mechanism, wherein the control mechanism controls the slide block to slide in the cavity in a reciprocating manner to control the opening or closing of the drain hole. The second filter screen can prevent impurities in the flocculation chamber from entering the fine filter chamber, and further impurity removal of sewage is achieved.

The sewage discharged from the drainage hole enters the fine filtering chamber for further purification, the three-layer filter screen optimization device has the effect of removing impurity particles in the sewage, and the activated carbon layer can adsorb the peculiar smell and partial pollutants of the sewage to enhance the purification effect.

Furthermore, an automatic discharging mechanism for controlling the flocculant storage cavity to automatically discharge the flocculant is arranged on the flocculant storage cavity.

The automatic discharging mechanism is arranged on the flocculating agent storage cavity, so that the device is automatic, manual control is not needed, labor consumption is reduced, and the use is more convenient.

Further, the flocculating agent is deposited the chamber and is stirred the rod homonymy, automatic discharge mechanism include horizontal intercommunicating pore and with the communicating pore sealing plug of sealing sliding connection in, the communicating pore intercommunication flocculating agent is deposited chamber and flocculation chamber, be equipped with compression spring between sealing plug and intercommunicating pore, the sealing plug can offset with the stirring rod, and when compression spring was in natural state, the sealing plug was located outside the through-hole.

The flocculating agent is deposited the chamber and is deposited the homonymy with the poking bar, when guaranteeing that the poking bar does not start, in the intercommunication hole was arranged in to the sealing plug to seal the intercommunication hole, avoid the flocculating agent to spill over in the deposit room. At the in-process of puddler horizontal migration, when the puddler did not offset with the sealing plug, compression spring applyed the effort that moves outside the intercommunicating pore to the sealing plug, and the sealing plug stretches out outside the intercommunicating pore this moment to this is deposited the chamber with flocculation room and flocculating agent and is switched on between, and the flocculating agent is deposited the chamber from the flocculating agent and is got into in the flocculation room and sewage reaction, realizes the effect of flocculating the settlement with the pollutant in the sewage. Then the stirring rod moves to reset and is pressed against the sealing plug again, so that the communicating hole is closed.

Further, control mechanism includes elastic component, reel and acts as go-between, the elastic component is located the lateral wall that wash port was kept away from to slider and cavity, and elastic component one end and slider fixed connection, the other end and cavity fixed connection, cavity one end is arranged in to the reel, act as go-between one end and slider fixed connection, the other end of acting as go-between walks around reel and puddler fixed connection.

When the stirring rod moves horizontally and pulls the stay wire, the stay wire drives the sliding block to move horizontally along the cavity, and when the stirring rod and the stay wire are in a relaxed state, the elastic piece can apply acting force to the sliding block to reset the sliding block, so that the sliding and resetting of the sliding block are realized, and the opening and closing of the drain hole are controlled. The drain hole is intermittently opened and closed along with the stirring rod, the speed of discharging the sewage out of the flocculation chamber is reduced, more time is prolonged for the reaction of the flocculating agent and the sewage, and the effect of sewage flocculation is ensured.

Further, the water drainage hole is located on one side of the cavity close to the communication hole, and the reel is located at one end of the cavity close to the communication hole.

When the puddler was to keeping away from one side horizontal migration of intercommunicating pore, the puddler drove and acts as go-between and removes, act as go-between pulling slider, the slider is closed the wash port gradually, the intercommunicating pore is stretched out to the sealing plug simultaneously, the flocculating agent gets into the flocculation room, and the flocculating agent at first reacts with the sewage that is close to intercommunicating pore one side, and in the puddler reset and move, the wash port is opened and is discharged the sewage that has been handled after this side of intercommunicating pore has been close to this basis flocculation earlier, the puddler can drive the sewage part that keeps away from intercommunicating pore one side to intercommunicating pore one side when resetting.

Further, the outside of row's cinder notch is equipped with crushing room, it is connected with the cutting knife to smash between the lateral wall that the room is close to the top, the below of cutting knife is equipped with rolls the roller.

The solid impurities are easy to load and transport after being crushed by the crushing chamber, and the subsequent conveying of the solid impurities to a processing center is facilitated. Solid impurities are cut by a cutting knife and rolled by a rolling roller, and are crushed twice, so that the crushing effect is better.

Further, the power supply includes cylinder and two connecting rods, the one end of two connecting rods respectively with ejector pad and poking bar fixed connection, the other end of two connecting rods all with the piston rod fixed connection of cylinder.

The horizontal reciprocating movement of the push block and the stirring rod is controlled by one air cylinder, so that the number of power sources is reduced, and energy is saved.

Further, the pushing block is protruded from the edge to the center and towards one side far away from the slag discharge port.

When the protrusion contacts with the solid impurities in the coarse filtration chamber, the periphery of the protrusion is an inclined plane, and the acting force moving to the outer side of the protrusion can be applied to the solid impurities, so that the solid impurities move to the side surface of the push block, and the push block is prevented from extruding the solid impurities to one side away from the slag discharge port to influence slag discharge.

Further, the cross section of the coarse filtering chamber is in a trapezoid shape rotated ninety degrees counterclockwise.

Reduce the indoor space size that is close to one side of row's cinder notch of coarse filtration, when avoiding the ejector pad to extrude solid impurity to row's cinder notch, the side escape of the solid impurity that is located ejector pad and row's cinder notch ejector pad along with the water flow direction ejector pad.

Further, the bottom of the sealing plug is inclined from outside to inside and upward.

One part of the sealing plug extends out of the communicating hole, and the inclined plane at the bottom of the sealing plug can form a gap with the communicating hole, so that a flocculating agent enters the flocculation chamber from the gap, and can enter the flocculation chamber to react with sewage more quickly, and the sewage reacts more fully.

Drawings

FIG. 1 is a front sectional view of an embodiment of a sewage draining exit purifying device of the present invention;

fig. 2 is a top view of a coarse filtration chamber of an embodiment of a sewage draining exit purifying device of the present invention.

Reference numerals in the drawings of the specification include: the device comprises a purification box 1, a first filter screen 2, a second filter screen 3, a third filter screen 4, a push block 5, an inclined block 6, a slag discharge port 7, a stirring rod 8, a spiral fan blade 9, a cavity 10, a slide block 11, a water discharge hole 12, an activated carbon layer 13, a flocculating agent storage cavity 14, a compression spring 15, an elastic piece 16, a reel 17, a crushing chamber 18, a cutting knife 19, a grinding roller 20, a discharge port 21, a connecting rod 22, an air cylinder 23, a water inlet 24 and an inclined plate 25.

Detailed Description

The following is further detailed by way of specific embodiments:

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "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 used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The embodiment example is shown in the attached figure 1: the utility model provides a drain purifier, includes purifying box 1, and the purifying box can vertically place, also can transversely place, adopts the purifying box of vertical placing in this embodiment. The top of purifying box 1 is equipped with water inlet 24, and the bore of water inlet 24 is by down up and outside expansion, and the bore of being connected with the drain of water inlet 24 is bigger, does benefit to sewage and discharges into the clean water tank, and the bore that water inlet 24 and coarse filtration room are connected is slightly littleer for the sewage that gets into coarse filtration room can be more concentrated, also makes the solid impurity that drops on filter screen 2 stack simultaneously and concentrate, does benefit to follow-up operation, and the bottom of purifying box 1 is equipped with the delivery port. Be equipped with coarse filtration room from last to down in proper order in the purifying box 1, flocculation chamber and fine filtration room, coarse filtration room's top and water inlet 24 intercommunication, as shown in fig. 2, coarse filtration room's cross section is the ninety trapezoidal of anticlockwise rotation, the whole open-top of flocculation chamber is in order to receive coarse filtration room's drainage, fine filtration room's entry and flocculation chamber intercommunication, fine filtration room includes three 4 and the activated carbon layer 13 that is located three 4 within a definite time of filter screen of two-layer filter screen, three 4 adoption board-like filter screens of filter screen, polyester material or stainless steel etc. can be chooseed for use to the material, the bottom and the delivery port intercommunication of.

The coarse filtration chamber comprises a transverse filter screen I2, a push block 5 arranged on the filter screen I2 and a slag discharge port 7 arranged on the side wall of the coarse filtration chamber, wherein the filter screen I2 is a coarse filtration screen, and the material is stainless steel, high silica glass fiber and the like. The pushing block 5 is protruded from the edge to the center and to the side far away from the slag discharge opening 7, such as the protruded surface on the right side of the pushing block 5 in fig. 1. Arrange cinder notch 7 and be located filter screen 2 top, ejector pad 5 places the right side at the coarse filtration room in this embodiment, arranges cinder notch 7 and is located the left side of filter screen. Arrange cinder notch 7 and filter screen 2 within a definite time and be equipped with sloping block 6, in the inclined plane of sloping block 6 towards coarse filtration room, the bottom and the filter screen 2 welding of sloping block 6, the height that highly equals of sloping block 6 arranges cinder notch 7 to the distance of filter screen 2, the top of arranging cinder notch 7 is equipped with from last down and inside slope's swash plate 25, the top of swash plate 25 and the lateral wall welding of coarse filtration room, swash plate 25 plays the guide effect to sewage, flow in row cinder notch 7 when avoiding sewage to get into coarse filtration room.

The outside (as the left side in the figure) of row cinder notch 7 is equipped with crushing room 18, smashes room 18 and is located purifying box 1, smashes and is connected with cutting knife 19 between the lateral wall that room 18 is close to the top, preferably smashes left and right both sides and/or preceding, the back both sides of room 18 and sets up cutting knife 19, cutting knife 19's both ends and crushing room 18 lateral wall fixed connection, and fixed connection can adopt welding, riveting or screw connection etc.. A rolling roller 20 is arranged below the cutting knife 19, a discharge port 21 is arranged on one side of the crushing chamber 18 far away from the slag discharge port 7, and the discharge port 21 is positioned below the rolling roller 20.

In this embodiment, the flocculation chamber includes horizontal poking bar 8 and locates the flocculating agent on the flocculation chamber lateral wall and deposits chamber 14, be equipped with spiral flabellum 9 on the poking bar 8, poking bar 8 all is equipped with the power supply with one side of ejector pad 5, the power supply is used for driving

poking bar

8 and 5 horizontal reciprocating motion of ejector pad, it is located same one side to prefer poking bar 8 and ejector pad 5's power supply, the power supply includes cylinder 23 and two connecting rods 22, the one end of two connecting rods 22 welds with ejector pad 5 and poking bar 8 respectively, the other end of two connecting rods 22 all welds with the piston rod of cylinder 23, and power supply one side is equipped with the frame (not shown in the figure), the frame is used for placing power supply.

The flocculant storage chamber 14 is filled with a sufficient amount of flocculant, which may be an inorganic flocculant (e.g., polyaluminum ferric sulfate chloride (PAFCS) or polyferric sulfate), an organic polymeric flocculant (e.g., polyacrylamide), or the like. The flocculating agent is deposited and is equipped with the automatic discharge mechanism who controls its automatic discharge flocculating agent on the chamber 14, it deposits chamber 14 and puddler 8 homonymy to prefer the flocculating agent, automatic discharge mechanism include horizontal intercommunicating pore and with the downthehole sealing plug of sealing and sliding connection of intercommunicating pore, intercommunicating pore intercommunication flocculating agent deposits chamber 14 and flocculation chamber, the bottom outside-in and the tilt up of sealing plug, be equipped with compression spring 15 between sealing plug and intercommunicating pore, 15 one end of compression spring and sealing plug welding, the other end and intercommunicating pore inner wall welding, compression spring 15 adopts the higher spring of hardness. The sealing plug is propped against the stirring rod 8, and when the compression spring 15 is in a natural state, the sealing plug is positioned outside the through hole.

In this embodiment, a transverse cavity 10 is arranged in the bottom plate of the flocculation chamber, the cavity 10 is provided with a drain hole 12, preferably, the drain hole 12 is located on one side of the cavity 10 close to the communicating hole, a second filter screen 3 is arranged on one side of the drain hole 12 close to the flocculation chamber, the second filter screen 3 is a fine filter screen, and the material of the second filter screen can be stainless steel, high silica glass fiber and the like. A slide block 11 capable of sealing the drain hole 12 or sliding to expose the drain hole 12 is arranged in the cavity 10, and a control mechanism for controlling the slide block 11 to horizontally slide is connected on the slide block 11. The control mechanism comprises an elastic piece 16, a reel 17 and a pull wire, wherein the elastic piece 16 can be selected from a common elastic spring (such as a spiral spring), the elastic piece 16 is positioned between the slider 11 and the side wall of the cavity 10 far away from the drain hole 12, one end of the elastic piece 16 is welded with the slider 11, and the other end of the elastic piece 16 is welded with the cavity 10. The winding wheel 17 is arranged at one end of the cavity 10, and preferably the winding wheel 17 is arranged at one end of the cavity 10 close to the communication hole. One end of the stay wire is welded with the slide block 11, and the other end of the stay wire is welded with the stirring rod 8 by bypassing the reel 17.

Initial state: as shown in figure 1, the pushing block 5 and the stirring rod 8 are both positioned on the right side of the purified water tank, the right side surface of the stirring rod 8 is abutted against the sealing plug, the sealing plug is completely retracted in the communicating hole, and the compression spring 15 is in a compressed state. And the stay wire is in a relaxed state, the elastic piece 16 is in a natural state, the slide block 11 is positioned at the left side of the drain hole 12, and the drain hole 12 is in an open state.

The specific operation process comprises the following steps: the drain communicates with the water inlet 24 of water purification case, drain exhaust sewage gets into the coarse filtration room from water inlet 24, filter screen 2 intercepts most solid matter in the sewage, start the power supply that ejector pad 5 is connected simultaneously, 5 levels of power supply control ejector pad move left, promote the solid matter of filter screen 2 interception to the sloping block 6 of arranging cinder notch 7 below, with this reciprocating motion, thereby accumulational solid matter increases gradually on the sloping block 6 and gets into row cinder notch 7 with the fixed material extrusion on sloping block 6 top, make the solid matter part on the filter screen 2 discharge, avoid the solid matter on the filter screen 2 to stack too much and lead to filter screen 2 to block up, guarantee filter screen 2 and normally go out water.

In the sewage after filter of filter screen 2 got into the flocculation chamber from the open-top of flocculation chamber, 8 levels of above-mentioned power supply synchro control poking bar removed left, poking bar 8 keeps away from the sealing plug gradually, poking bar 8 no longer applys pressure to the sealing plug, compression spring 15 applys the effort of outside removal of intercommunicating pore to the sealing plug, the sealing plug stretches out outside the intercommunicating pore this moment, flocculation chamber and flocculating agent deposit the chamber 14 and switch on between this moment, the flocculating agent deposits chamber 14 from the flocculating agent and gets into in the flocculation chamber with sewage reaction, and the flocculating agent at first reacts with the sewage that is close to. Meanwhile, when the stirring rod 8 moves leftwards horizontally, the stay wire is synchronously pulled to drive the sliding block 11 to move rightwards horizontally along the cavity 10, the elastic part 16 gradually becomes a stretching state, the sliding block 11 gradually closes the drain hole 12, so that sewage in the flocculation chamber is temporarily retained in the flocculation chamber, and a certain reaction time is ensured between the sewage in the flocculation chamber and a flocculating agent. In addition, the stirring rod 8 is provided with the spiral fan blades 9, the contact area between the spiral fan blades 9 and water is increased, and sewage in the flocculation chamber is stirred more conveniently, so that the sewage and the flocculating agent are fully mixed. And spiral fan blade 9 can be colluded the floe that floats in the flocculation chamber and link on the flabellum at the removal in-process, avoids the floe to float too much and cause the hindrance to the drainage of wash port 12, and most floe twine on poking bar 8, only needs to take out poking bar 8 and just can clear up most flocculated impurity, makes the clearance flocculation chamber more convenient.

When power supply control ejector pad 5 when horizontal migration right, the bellied face of ejector pad 5 and the interior solid impurity contact of coarse filtration room, bellied periphery is the inclined plane, applys the effort that removes to the bellied outside to solid impurity, makes solid impurity remove to the side of ejector pad 5, avoids ejector pad 5 to extrude solid impurity to one side of keeping away from row cinder notch 7 and influence and arrange the sediment. Meanwhile, the stirring rod 8 also horizontally moves rightwards, the stirring rod 8 gradually resets, so that the stirring rod 8 is pressed against the sealing plug again to seal the communicating hole, the stirring rod 8 and the stay wire gradually become a loose state, the elastic piece 16 applies elastic acting force for resetting the sliding block 11, the drain hole 12 is gradually opened, and sewage which is basically flocculated on the side close to the communicating hole is discharged. And when the stirring rod 8 is reset and moves, the sewage far away from the communicating hole side is driven to the communicating hole side, so that the part of sewage can be more fully contacted with the flocculating agent. Therefore, the intermittent opening and closing of the drain hole 12 are realized, the speed of discharging the sewage out of the flocculation chamber is reduced, more time is increased for the reaction of the flocculating agent and the sewage, and the effect of sewage flocculation is ensured.

The sewage enters the fine filtering chamber from the water discharging hole 12 through the second filtering net 3, then naturally falls down, passes through the filtering layer, falls into the bottom of the purifying box 1, and is discharged from the water outlet.

And the solid impurity who discharges from row's cinder notch 7 drops in crushing room 18 indoor, and solid impurity receives self action of gravity and falls, contacts with cutting knife 19 earlier, is cut by cutting knife 19, then falls to rolling roller 20 on, is rolled by rolling roller 20, falls in the bottom of crushing room 18 at last, and manual or mechanical transmission of rethread conveys the solid impurity who smashes the room 18 bottom to discharge gate 21, and the solid impurity after will smashing at last loads, carries to treatment center.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a drain purifier which characterized in that: the device comprises a purification box, wherein a coarse filtration chamber and a flocculation chamber positioned below the coarse filtration chamber are sequentially arranged in the purification box, the coarse filtration chamber comprises a transverse first filter screen and a push block arranged on the first filter screen, a slag discharge port is formed in the coarse filtration chamber and positioned above the first filter screen, an inclined block is arranged between the slag discharge port and the first filter screen, and the inclined plane of the inclined block faces into the coarse filtration chamber;

2. A drain decontamination device according to claim 1, wherein: and an automatic discharging mechanism for controlling the flocculant storage cavity to automatically discharge the flocculant is arranged on the flocculant storage cavity.

3. A drain decontamination device according to claim 2, characterized in that: the flocculant storage cavity and the same side of the stirring rod are arranged, the automatic discharge mechanism comprises a transverse communicating hole and a sealing plug in sealing and sliding connection with the inside of the communicating hole, the communicating hole is communicated with the flocculant storage cavity and the flocculation chamber, a compression spring is arranged between the sealing plug and the communicating hole, the sealing plug can be abutted against the stirring rod, and when the compression spring is in a natural state, the sealing plug is located outside the through hole.

4. A drain decontamination device according to claim 1 or 3, wherein: the control mechanism comprises an elastic part, a reel and a stay wire, wherein the elastic part is positioned between the slider and the side wall of the cavity far away from the drain hole, one end of the elastic part is fixedly connected with the slider, the other end of the elastic part is fixedly connected with the cavity, one end of the cavity is arranged in the reel, one end of the stay wire is fixedly connected with the slider, and the other end of the stay wire bypasses the reel and is fixedly connected with the stirring rod.

5. A drain decontamination device according to claim 4, characterized in that: the drain hole is positioned at one side of the cavity close to the communication hole, and the reel is positioned at one end of the cavity close to the communication hole.

6. A drain decontamination device according to claim 1, wherein: the outside of row's cinder notch is equipped with crushing room, it is connected with the cutting knife to smash between the lateral wall that the room is close to the top, the below of cutting knife is equipped with rolls the roller.

7. A drain decontamination device according to claim 1, wherein: the power supply comprises an air cylinder and two connecting rods, one ends of the two connecting rods are fixedly connected with the push block and the stirring rod respectively, and the other ends of the two connecting rods are fixedly connected with a piston rod of the air cylinder.

8. A drain decontamination device according to claim 1, wherein: the push block is protruded from the edge to the center and towards one side far away from the slag discharge port.

9. A drain decontamination device according to claim 1, wherein: the cross section of the coarse filtering chamber is in a trapezoid shape rotated ninety degrees anticlockwise.

10. A drain decontamination device according to claim 3, characterized in that: the bottom of the sealing plug is inclined from outside to inside and upwards.