CN211921097U - A sewage outlet purification device - Google Patents

Abstract

The utility model belongs to the technical field of environmental protection, and specifically discloses a sewage outlet purification device, which comprises a purification box. The purification box is provided with a coarse filter chamber and a flocculation chamber. Push block, the side wall of the coarse filter chamber away from the push block is provided with a slag outlet; the top of the flocculation chamber is provided with an opening to receive the drainage of the coarse filter chamber, and the flocculation chamber includes a horizontal stirring rod and a flocculation chamber. The flocculant storage cavity is provided with a power source on one side of the stirring rod and the push block. The flocculant storage cavity is provided with an automatic discharge mechanism to control its automatic discharge of flocculant; it also includes a fine filter room, the inlet of the fine filter room and the flocculation mechanism. The drainage holes of the chamber are connected, and the fine filter chamber includes two layers of fine filter screens and an activated carbon layer between the fine filter screens. By adopting the technical scheme, the sewage is purified by discharging the sewage into the purification box and utilizing the various action chambers in the purification box.

Description

A sewage outlet purification device

technical field

The utility model belongs to the technical field of environmental protection, in particular to a sewage outlet purification device.

Background technique

With the continuous development of the city, the total amount of urban domestic sewage discharge increases year by year. Untreated industrial wastewater, domestic sewage, farmland drainage and other harmful substances enter the river directly or indirectly. A part of the large amount of organic matter in these sewage is decomposed by microorganisms and consumes A large amount of dissolved oxygen in the water makes the water environment in an anaerobic or anoxic state, leading to the proliferation of anaerobic organisms and destroying the aquatic environment. The decomposition of organic matter will produce odorous gases, such as methane, ammonia, hydrogen sulfide, etc., these gases escape from the water surface, causing the water body to stink and causing the water quality to deteriorate.

At present, in production and life, the river pollution control method adopted is to discharge sewage into the river, and then purify the river. Therefore, there is a huge pressure on the management of river pollution. Therefore, we need to develop a sewage treatment equipment for sewage outfalls to purify the sewage discharged from the sewage outfalls and discharge them to reduce the pollutants flowing into the river.

Utility model content

The purpose of the utility model is to provide a sewage outlet purification device, which can reduce the pollutants discharged into the river by purifying the sewage in the sewage outlet.

In order to achieve the above purpose, the basic scheme of the present invention is as follows: a sewage outlet purification device, comprising a purification box, wherein a coarse filtration chamber and a flocculation chamber located below the coarse filtration chamber are sequentially arranged in the purification box, and the coarse filtration chamber It includes a horizontal filter screen 1 and a push block placed on the filter screen 1, the coarse filter chamber is provided with a slag discharge port, the slag discharge port is located above the filter screen 1, and the slag discharge port and the filter screen are provided with an inclined block, the inclined surface of the inclined block faces the coarse filter chamber;

The top of the flocculation chamber is provided with an opening to receive the drainage of the coarse filter chamber. The flocculation chamber includes a horizontal stirring rod and a flocculant storage cavity arranged on the side wall of the flocculation chamber. One side of the stirring stick and the push block is provided with a power source, and the power source is used to drive the stirring stick and the push block to move back and forth horizontally. Drainage hole, the side of the drainage hole close to the flocculation chamber is provided with a second filter screen, the cavity is provided with a slider that can seal the drainage hole or slide to expose the drainage hole, and the slider is connected with a control slider to slide horizontally the control body;

It also includes a fine filtration chamber, the inlet of the fine filtration chamber is connected with the drainage hole of the flocculation chamber, and the fine filtration chamber includes two layers of filter nets and an activated carbon layer located between the third filter nets.

The working principle and beneficial effects of this basic scheme are as follows: the sewage in the sewage outlet first enters the coarse filter chamber, the filter screen intercepts most of the solid matter in the sewage, and simultaneously activates the power source connected to the push block, which controls the level of the push block. Move, so as to push the solid material intercepted by the filter screen to the inclined block below the slag discharge port, so as to reciprocate, the solid material accumulated on the inclined block gradually increases, and the fixed material at the top of the inclined block is squeezed into the slag discharge port. , so that the solid material on the first filter screen is partially discharged, so as to prevent the solid material on the first filter screen from being piled up too much and cause the first filter screen to be blocked, so as to ensure the normal water output of the filter screen one.

Then, the sewage filtered by the first filter enters the flocculation chamber from the top opening of the flocculation chamber. At this time, the power source connected to the stirring rod is activated. At the same time, the flocculant storage chamber releases the flocculant into the flocculation chamber through a manual or automatic mechanism, and the stirring rod is connected to the flocculation chamber. The power source drives the stirring rod to move back and forth horizontally to fully mix the sewage and the flocculant. In addition, the stirring rod is provided with a spiral fan blade, which increases the contact area with water, which is more conducive to stirring the sewage in the flocculation chamber and improving the sewage The mixing effect of flocculants. At the same time, the spiral fan blades can hook the flocs floating in the flocculation chamber to the fan blades during the moving process, so as to avoid the flocs floating too much and hinder the drainage of the drainage holes, and most of the flocs are wrapped around the stirring stick. Most of the flocculated impurities can be cleaned up by taking out the stirring stick, which makes cleaning the flocculation chamber more convenient. Restart the control mechanism, and the control mechanism controls the sliding block to slide back and forth in the cavity to control the opening or closing of the drainage hole. The second filter screen can prevent the impurities in the flocculation chamber from entering the fine filter chamber, so as to further remove impurities from the sewage.

The sewage discharged from the drainage holes enters the fine filter room for further purification. The two-layer filter screen and the three-optimized device remove the effect of impurity particles in the sewage. The activated carbon layer can absorb the odor and some pollutants of the sewage to enhance the purification effect.

Further, the flocculant storage cavity is provided with an automatic discharge mechanism for controlling the automatic discharge of the flocculant.

An automatic discharge mechanism is set on the flocculant storage cavity to realize the automation of the device without manual control, reducing labor consumption and making it more convenient to use.

Further, the flocculant storage cavity is on the same side as the stirring rod, the automatic discharge mechanism includes a transverse communication hole and a sealing plug that is sealed and slidably connected with the communication hole, and the communication hole communicates with the flocculant storage cavity and the flocculation chamber, so A compression spring is arranged between the sealing plug and the communication hole, and the sealing plug can abut against the stirring rod. When the compression spring is in a natural state, the sealing plug is located outside the through hole.

The flocculant storage cavity is on the same side as the stirring rod, so that when the stirring rod is not started, the sealing plug is placed in the communication hole, so as to seal the communication hole and prevent the flocculant from overflowing from the storage room. During the horizontal movement of the stirring rod, when the stirring rod is not in contact with the sealing plug, the compression spring exerts a force on the sealing plug to move out of the communication hole. At this time, the sealing plug extends out of the communication hole, thereby connecting the flocculation chamber and the flocculation hole. The flocculant storage chamber is connected, and the flocculant enters the flocculation chamber from the flocculant storage chamber to react with the sewage, so as to realize the effect of flocculation and sedimentation of the pollutants in the sewage. Then, the stirring rod moves and resets to abut against the sealing plug again, so that the communication hole is closed.

Further, the control mechanism includes an elastic member, a winding wheel and a pull wire, the elastic member is located between the slider and the side wall of the cavity away from the drainage hole, one end of the elastic member is fixedly connected to the slider, and the other end is fixedly connected to the cavity The winding wheel is placed at one end of the cavity, one end of the pulling wire is fixedly connected with the slider, and the other end of the pulling wire is fixedly connected with the stirring rod around the winding wheel.

When the stirring rod moves horizontally and pulls the pulling wire, the pulling wire drives the slider to move horizontally along the cavity. When the stirring rod and the pulling wire are in a relaxed state, the elastic member can exert a force to reset the slider, so as to realize the sliding of the sliding block. And reset, so as to control the opening and closing of the drainage hole. The drainage hole is opened and closed intermittently with the stirring rod, which slows down the speed of sewage discharge from the flocculation chamber, increases more time for the reaction between flocculant and sewage, and ensures the effect of sewage flocculation.

Further, the drainage hole is located at the side of the cavity close to the communication hole, and the winding wheel is located at the end of the cavity close to the communication hole.

When the stirring rod moves horizontally to the side away from the communication hole, the stirring rod drives the pull wire to move, the pull wire pulls the slider, the slider gradually closes the drainage hole, and the sealing plug extends out of the communication hole, and the flocculant enters the flocculation chamber, and the flocculant first It reacts with the sewage on the side close to the communication hole, and during the reset movement of the stirring rod, the drainage hole is opened to discharge the sewage that has been basically flocculated on the side close to the communication hole. The part of the sewage is driven to the side of the communication hole, so that this part of the sewage can be more fully contacted with the flocculant, and the reaction effect is better.

Further, a pulverizing chamber is provided on the outer side of the slag discharge port, a cutting knife is connected between the side walls of the pulverizing chamber near the top, and a rolling roller is arranged below the cutting knife.

After the solid impurities are pulverized by the pulverizing chamber, it is easier to load and transport, which is conducive to the subsequent transportation of solid impurities to the processing center. The solid impurities are first cut by a cutting knife, and then rolled by a rolling roller, and crushed twice, and the crushing effect is better.

Further, the power source includes a cylinder and two connecting rods, one end of the two connecting rods is fixedly connected to the push block and the stirring stick respectively, and the other ends of the two connecting rods are fixedly connected to the piston rod of the cylinder.

A cylinder is used to control the horizontal reciprocating movement of the push block and the stirring stick at the same time, reducing the number of power sources and saving energy.

Further, the push block protrudes from the edge toward the center and toward the side away from the slag discharge port.

When the protrusions are in contact with the solid impurities in the coarse filter chamber, the periphery of the protrusions are inclined planes, which can exert a force to move the solid impurities to the outside of the protrusions, so that the solid impurities move to the side of the push block, so as to prevent the solid impurities from being pushed by the push block. Squeeze to the side away from the slag discharge port and affect the slag discharge.

Further, the cross-section of the coarse filter chamber is a trapezoid rotated 90 degrees counterclockwise.

Reduce the size of the space near the slag discharge port in the coarse filtration chamber to prevent the solid impurities between the push block and the slag discharge port from escaping with the water flow to the side of the push block when the push block squeezes the solid impurities to the slag discharge port. .

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

A part of the sealing plug protrudes out of the communication hole, and the bottom slope of the sealing plug can form a gap with the communication hole, so that the flocculant can enter the flocculation chamber from the gap, so that the flocculant can enter the flocculation chamber faster and react with the sewage, so that the sewage can react more fully.

Description of drawings

1 is a front cross-sectional view of an embodiment of a sewage outlet purification device of the present invention;

Fig. 2 is a top view of a coarse filter chamber of an embodiment of a sewage outlet purification device of the present invention.

The reference signs in the accompanying drawings include: purification box 1, filter 1 2, filter 2 3, filter 3 4, push block 5, oblique block 6, slag discharge port 7, stirring rod 8, spiral fan blade 9 , cavity 10, slider 11, drainage hole 12, activated carbon layer 13, flocculant storage cavity 14, compression spring 15, elastic member 16, winding wheel 17, crushing chamber 18, cutting knife 19, rolling roller 20, outlet Material port 21, connecting rod 22, cylinder 23, water inlet 24, swash plate 25.

Detailed ways

The following is further described in detail by specific embodiments:

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility. The novel and simplified description does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

An example is shown in Figure 1: a sewage outlet purification device, including a purification box 1, the purification box can be placed vertically, and can also be placed horizontally. In this embodiment, a vertically placed purification box is used. The top of the purification tank 1 is provided with a water inlet 24, the diameter of the water inlet 24 expands from bottom to top and outward, and the diameter of the water inlet 24 connected to the sewage outlet is larger, which is conducive to the discharge of sewage into the clean water tank, and the water inlet 24 The diameter connected to the coarse filter chamber is slightly smaller, so that the sewage entering the coarse filter chamber can be more concentrated, and at the same time, the solid impurities falling on the filter screen 1 2 can be stacked together, which is convenient for subsequent operations. Outlet. The purification box 1 is provided with a coarse filtration room, a flocculation room and a fine filtration room in sequence from top to bottom. The top of the coarse filtration room is communicated with the water inlet 24. As shown in Figure 2, the cross section of the coarse filtration room is a counterclockwise rotation of nine A ten-degree trapezoid, the entire top of the flocculation chamber is open to receive the drainage of the coarse filter chamber, the inlet of the fine filter chamber is communicated with the flocculation chamber, and the fine filter chamber includes two layers of filter screen 34 and an activated carbon layer 13 between the filter screens 34 , The filter screen three 4 adopts the plate filter screen, the material can choose polyester material or stainless steel, etc., the bottom of the fine filter chamber is connected with the water outlet.

The coarse filter chamber includes a horizontal filter screen one 2, a push block 5 placed on the filter screen one 2, and a slag discharge port 7 arranged on the side wall of the coarse filter chamber. High silica glass fiber, etc. The push block 5 protrudes from the edge to the center and toward the side away from the slag discharge port 7 , such as the convex surface on the right side of the push block 5 in FIG. 1 . The slag discharge port 7 is located above the filter screen 1 2. In this embodiment, the push block 5 is placed on the right side of the coarse filter chamber, and the slag discharge port 7 is located on the left side of the filter screen. There is an inclined block 6 between the slag discharge port 7 and the filter screen one 2, the inclined surface of the inclined block 6 faces the coarse filter room, the bottom of the inclined block 6 is welded with the filter screen one 2, and the height of the inclined block 6 is equal to the slag discharge port 7 to the filter screen. The distance from the net one 2, the top of the slag discharge port 7 is provided with a sloping plate 25 that slopes inward from top to bottom, the top of the sloping plate 25 is welded with the side wall of the coarse filter chamber, and the sloping plate 25 guides the sewage, Prevent sewage from flowing into the slag discharge port 7 when it enters the coarse filter chamber.

The outside of the slag discharge port 7 (the left side in the figure) is provided with a pulverizing chamber 18. The pulverizing chamber 18 is located in the clean box 1. A cutting knife 19 is connected between the side walls of the pulverizing chamber 18 near the top. , the right two sides and/or the front and rear sides are provided with cutting knives 19, the two ends of the cutting knives 19 are fixedly connected with the side walls of the crushing chamber 18, and the fixed connection can be welded, riveted or screwed. A rolling roller 20 is provided below the cutting blade 19 , and a discharge port 21 is provided on the side of the crushing chamber 18 away from the slag discharge port 7 , and the discharging port 21 is located below the rolling roller 20 .

In this embodiment, the flocculation chamber includes a horizontal stirring rod 8 and a flocculant storage cavity 14 arranged on the side wall of the flocculation chamber. The stirring rod 8 is provided with a spiral fan blade 9, and one side of the stirring rod 8 and the push block 5 are both A power source is provided, and the power source is used to drive the stirring stick 8 and the push block 5 to reciprocate horizontally. Preferably, the power source of the stirring stick 8 and the push block 5 is located on the same side. One end of the connecting rod 22 is welded with the push block 5 and the stirring stick 8 respectively, and the other ends of the two connecting rods 22 are welded with the piston rod of the cylinder 23, and a frame (not shown in the figure) is provided on one side of the power source. The rack is used to place the power source and the connecting rod 22 .

A sufficient amount of flocculant is placed in the flocculant storage chamber 14, and the flocculant can be inorganic flocculants (such as polyferric sulfate aluminum chloride (PAFCS) or polyferric sulfate), organic polymer flocculants (such as polyacrylamide), etc. . The flocculant storage chamber 14 is provided with an automatic discharge mechanism that controls its automatic discharge of flocculant. Preferably, the flocculant storage chamber 14 is on the same side as the stirring rod 8. The automatic discharge mechanism includes a transverse communication hole and a seal that is sealed and slidably connected to the communication hole. The plug, the communication hole communicates with the flocculant storage cavity 14 and the flocculation chamber, the bottom of the sealing plug is inclined upward from the outside to the inside, a compression spring 15 is arranged between the sealing plug and the communication hole, one end of the compression spring 15 is welded with the sealing plug, and the other end is The inner wall of the communication hole is welded, and the compression spring 15 adopts a spring with higher hardness. The sealing plug is in contact with the stirring rod 8, and when the compression spring 15 is in a natural state, the sealing plug is located outside the through hole.

In this embodiment, a lateral cavity 10 is provided in the bottom plate of the flocculation chamber, and the cavity 10 is provided with a drainage hole 12. Preferably, the drainage hole 12 is located on the side of the cavity 10 close to the communication hole, and the drainage hole 12 is located on the side of the flocculation chamber. There is a filter screen 23, and the filter screen 23 adopts a fine filter screen, and the material can be stainless steel, high silica glass fiber, etc. The cavity 10 is provided with a sliding block 11 that can seal the drainage hole 12 or slidably expose the drainage hole 12 . The sliding block 11 is connected with a control mechanism for controlling the sliding of the sliding block 11 horizontally. The control mechanism includes an elastic member 16, a winding wheel 17 and a pull wire. The elastic member 16 can be selected from a common elastic spring (such as a coil spring). The elastic member 16 is located between the slider 11 and the side wall of the cavity 10 away from the drain hole 12. The elastic member One end of 16 is welded with the slider 11 , and the other end is welded with the cavity 10 . The winding wheel 17 is located at one end of the cavity 10 , preferably the winding wheel 17 is located at the end of the cavity 10 close to the communication hole. One end of the pull wire is welded with the slider 11 , and the other end of the pull wire is welded with the stirring rod 8 around the winding wheel 17 .

Initial state: As shown in Figure 1, the push block 5 and the stirring stick 8 are both located on the right side of the water purification tank, the right side of the stirring stick 8 is in contact with the sealing plug, the sealing plug is completely retracted in the communication hole, and the compression spring 15 in a compressed state. And the pull wire is in a relaxed state, the elastic member 16 is in a natural state, the slider 11 is located on the left side of the drain hole 12, and the drain hole 12 is in an open state.

The specific operation process: the sewage outlet is connected with the water inlet 24 of the water purification tank, the sewage discharged from the sewage outlet enters the coarse filter chamber from the water inlet 24, and the filter screen 1 2 intercepts most of the solid substances in the sewage, and simultaneously starts the push block 5 The connected power source, the power source controls the push block 5 to move horizontally to the left, and pushes the solid material intercepted by the filter screen 1 2 to the inclined block 6 below the slag discharge port 7, so as to reciprocate, the solid material accumulated on the inclined block 6 The material gradually increases so that the fixed material at the top of the inclined block 6 is squeezed into the slag discharge port 7, so that the solid material on the filter screen one 2 is partially discharged, and the solid material on the filter screen one 2 is prevented from being piled up too much. 2 is blocked, to ensure that the filter screen 1 and 2 are normal to water.

The sewage filtered by the filter screen-2 enters the flocculation chamber from the top opening of the flocculation chamber. The above-mentioned power source synchronously controls the stirring rod 8 to move horizontally to the left, and the stirring rod 8 gradually moves away from the sealing plug, and the stirring rod 8 no longer exerts pressure on the sealing plug. , the compression spring 15 exerts a force on the sealing plug to move out of the communication hole. At this time, the sealing plug extends out of the communication hole. At this time, the flocculation chamber and the flocculant storage cavity 14 are connected, and the flocculant enters from the flocculant storage cavity 14. The flocculation chamber reacts with the sewage, and the flocculant first reacts with the sewage near the side of the communication hole. At the same time, when the stirring rod 8 moves horizontally to the left, the pulling wire is pulled synchronously, and the pulling wire drives the slider 11 to move horizontally to the right along the cavity 10, the elastic member 16 gradually becomes a stretched state, and the slider 11 gradually closes the drainage hole 12, so as to flocculate The indoor sewage is temporarily retained in the flocculation chamber to ensure a certain reaction time between the sewage in the flocculation chamber and the flocculant. In addition, the stirring rod 8 is provided with a spiral fan blade 9, which increases the contact area with water, which is more conducive to agitating the sewage in the flocculation chamber, so that the sewage and the flocculant can be fully mixed. And the spiral fan blade 9 can hook the flocculent floating in the flocculation chamber to the fan blade during the moving process, so as to avoid too much floc floating and cause obstruction to the drainage of the drainage hole 12, and most flocs are wound on the stirring stick 8. , it is only necessary to take out the stirring rod 8 to clean most of the flocculated impurities, which makes cleaning the flocculation chamber more convenient.

When the power source controls the push block 5 to move horizontally to the right, the convex surface of the push block 5 is in contact with the solid impurities in the coarse filter chamber. The solid impurities are moved to the side of the push block 5 to prevent the push block 5 from squeezing the solid impurities to the side away from the slag discharge port 7 to affect the slag discharge. At the same time, the stirring rod 8 also moves horizontally to the right, and the stirring rod 8 is gradually reset, so that the stirring rod 8 is in contact with the sealing plug again, so that the communication hole is closed, and the stirring rod 8 and the pulling wire gradually become loose. 11 exerts an elastic force to reset it, and the drainage hole 12 is gradually opened, and the sewage that has been basically flocculated near the communication hole is discharged. When the stirring rod 8 resets and moves, it drives the sewage away from the side of the communication hole to the side of the communication hole, so that this part of the sewage can be more fully contacted with the flocculant. This reciprocation realizes the intermittent opening and closing of the drainage hole 12, slows down the speed of sewage discharge from the flocculation chamber, increases more time for the reaction between the flocculant and the sewage, and ensures the effect of sewage flocculation.

The sewage enters the fine filter chamber from the drainage hole 12 through the filter screen 2 3, and then the sewage falls naturally, passes through the filter layer, falls into the bottom of the purification box 1, and is discharged from the water outlet.

The solid impurities discharged from the slag discharge port 7 fall into the crushing chamber 18. The solid impurities fall under the action of their own gravity. They first contact the cutting knife 19, are cut by the cutting knife 19, and then fall on the rolling roller 20. The rolling roller 20 is rolled and finally falls on the bottom of the crushing chamber 18, and then the solid impurities at the bottom of the crushing chamber 18 are transferred to the discharge port 21 by manual or mechanical transmission, and finally the crushed solid impurities are loaded and transported to the treatment center.

The above descriptions are only the embodiments of the present invention, and the common knowledge such as the well-known specific structures and characteristics in the solutions are not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present utility model, several deformations and improvements can also be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the present utility model. The effect of the implementation of the new model and the practicability of the patent. The scope of protection claimed in this application should be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (10)

1. A sewage outlet purification device, characterized in that: it comprises a purification box, and the purification box is successively provided with a coarse filtration chamber and a flocculation chamber positioned below the coarse filtration chamber, and the coarse filtration chamber comprises a horizontal filter screen one and a A push block placed on the filter screen 1, the coarse filter chamber is provided with a slag discharge port, the slag discharge port is located above the filter screen 1, and there is an inclined block between the slag discharge port and the filter screen, and the inclined block The slope of the filter faces the coarse filter chamber; The top of the flocculation chamber is provided with an opening to receive the drainage of the coarse filter chamber. The flocculation chamber includes a horizontal stirring rod and a flocculant storage cavity arranged on the side wall of the flocculation chamber. One side of the stirring stick and the push block is provided with a power source, and the power source is used to drive the stirring stick and the push block to move back and forth horizontally. Drainage hole, the side of the drainage hole close to the flocculation chamber is provided with a second filter screen, the cavity is provided with a slider that can seal the drainage hole or slide to expose the drainage hole, and the slider is connected with a control slider to slide horizontally the control body; It also includes a fine filtration chamber, the inlet of the fine filtration chamber is connected with the drainage hole of the flocculation chamber, and the fine filtration chamber includes two layers of filter nets and an activated carbon layer located between the third filter nets. 2 . The sewage outlet purification device according to claim 1 , wherein the flocculant storage cavity is provided with an automatic discharge mechanism for controlling the automatic discharge of the flocculant. 3 . 3 . A sewage outlet purification device according to claim 2 , wherein the flocculant storage cavity is on the same side as the stirring rod, and the automatic discharge mechanism comprises a transverse communication hole and a sealing and sliding connection with the communication hole. 4 . The sealing plug, the communication hole is connected to the flocculant storage cavity and the flocculation chamber, a compression spring is arranged between the sealing plug and the communication hole, and the sealing plug can be offset with the stirring rod. When the compression spring is in a natural state, the sealing plug is located in the outside the via. 4. A sewage outlet purification device according to claim 1 or 3, wherein the control mechanism comprises an elastic member, a winding wheel and a pull wire, and the elastic member is located between the slider and the cavity away from the drainage hole. Between the side walls, one end of the elastic piece is fixedly connected to the slider, the other end is fixedly connected to the cavity, the winding wheel is placed at one end of the cavity, one end of the pull wire is fixedly connected to the slider, and the other end of the pull wire goes around the winding wheel Fixed connection with stirring stick. 5 . The sewage outlet purification device according to claim 4 , wherein the drain hole is located at the side of the cavity close to the communication hole, and the winding wheel is located at the end of the cavity close to the communication hole. 6 . 6 . A sewage outlet purification device according to claim 1 , wherein a pulverizing chamber is provided on the outer side of the slag outlet, and a cutting knife is connected between the side walls of the pulverizing chamber near the top, and the cutting There is a rolling roller under the knife. 7 . A sewage outlet purification device according to claim 1 , wherein the power source comprises a cylinder and two connecting rods, and one end of the two connecting rods is fixedly connected to the push block and the stirring rod respectively, 8 . The other ends of the two connecting rods are fixedly connected with the piston rod of the cylinder. 8 . The sewage outlet purification device according to claim 1 , wherein the push block protrudes from the edge to the center and toward the side away from the slag outlet. 9 . 9 . The sewage outlet purification device according to claim 1 , wherein the cross-section of the coarse filter chamber is a trapezoid rotated 90 degrees counterclockwise. 10 . 10 . The sewage outlet purification device according to claim 3 , wherein the bottom of the sealing plug is inclined upward from the outside to the inside. 11 .

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