CN111807562A - Micro-power sewage treatment equipment with improved decomposition speed - Google Patents

Abstract

The invention discloses micro-power sewage treatment equipment with improved decomposition speed, and particularly relates to the technical field of sewage treatment equipment. The fixing cover, the activated carbon net, the clamping grooves and the clamping blocks are arranged, so that odor emitted from sewage can be adsorbed and purified by utilizing the adsorbability of the activated carbon net when the sewage treatment device is used, the nearby environment can be protected, meanwhile, the clamping grooves and the clamping blocks can be used for conveniently disassembling and replacing the activated carbon net, and the sewage treatment device is simple to operate and convenient to use.

Description

Micro-power sewage treatment equipment with improved decomposition speed

Technical Field

The invention relates to the technical field of sewage treatment equipment, in particular to micro-power sewage treatment equipment with improved decomposition speed.

Background

In recent years, with the increasing severity of environmental problems, the national discharge management of domestic sewage of residents is more and more strict, so a micro-power sewage treatment device is designed for the problem, the sewage treatment device can well treat the domestic sewage of residents and has the characteristic of energy conservation, but the existing micro-power sewage treatment device still has many problems and defects.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved:

(1) the traditional micro-power sewage treatment equipment cannot break up the sewage with larger volume in the sewage, so that the decomposition rate of the sewage is lower and the sewage treatment efficiency is lower;

(2) the sewage in the traditional micro-power sewage treatment equipment can emit odor to pollute the nearby environment;

(3) the traditional micro-power sewage treatment equipment is inconvenient for quantitatively putting medicaments and cannot meet the use requirement;

(4) the traditional micro-power sewage treatment equipment is inconvenient in sewage introduction and discharge and inconvenient in use;

(5) the traditional micro-power sewage treatment equipment does not buffer and protect the filter residue screen, so that the filter residue screen is damaged due to the large impact force of sewage.

Disclosure of Invention

The invention aims to provide a micro-power sewage treatment device with improved decomposition speed, which aims to solve the problems that the decomposition speed of sewage is low and the sewage treatment efficiency is low because the sewage with larger volume cannot be smashed in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a micro-power sewage treatment device with improved decomposition speed comprises a treatment tank and a water inlet, wherein an adsorption purification structure is arranged at the top end of the inside of the treatment tank, the water inlet is arranged at one side of the top end of the treatment tank, a quantitative medicine feeding mechanism is arranged at the other side of the top end of the treatment tank, a support is fixedly connected to one end of the quantitative medicine feeding mechanism, a solar panel is arranged at the top end of the support, a water outlet is arranged at the bottom end of one side of the treatment tank, splicing structures convenient to splice are arranged at the top end of the water inlet and one side of the water outlet, a filter residue net is arranged at a position close to the bottom end inside the treatment tank, a buffering protection structure is arranged at the bottom end of the;

stirring is smashed the mechanism and is included first pivot, first pivot swing joint is in the inside intermediate position department of treatment jar, the outside both ends fixedly connected with blade of first pivot, the even fixedly connected with cutter in one side of blade, the inside position department swing joint who is close to the top of treatment jar has the second pivot, one side of second pivot is provided with servo motor, the equal fixedly connected with grid piece in the outside both ends of second pivot, the equal fixedly connected with drive gear in the outside one side of first pivot and second pivot, one side swing joint of treatment jar has driven gear.

Preferably, one side of the grid piece is uniformly provided with a slot, the length and the width of the cutter are both smaller than those of the slot, and the cutter corresponds to the slot one by one.

Preferably, the driving gear and the driven gear are equal in size, and the driven gear is meshed with the driving gear on one side of the outer portion of the first rotating shaft and the outer portion of the second rotating shaft respectively.

Preferably, adsorb purification structure comprises fixed cover, activated carbon net, draw-in groove and fixture block, fixed cover fixed connection is respectively at the both ends of handling jar inside top, evenly be provided with the draw-in groove on the inside wall of fixed cover, the inside of fixed cover is provided with activated carbon net, activated carbon net's outside evenly is provided with the fixture block.

Preferably, the clamping block is embedded in the clamping groove, and the clamping groove is connected with the clamping block in a clamping mode.

Preferably, the ration is advanced medicine mechanism and is become by advancing medicine mouth, ration piece, ration axle and driving motor and constitute, advance medicine mouth fixed connection in one side on handling jar top, swing joint has the ration axle between the inside both ends of medicine mouth, the even fixedly connected with ration piece in outside of ration axle, driving motor fixed connection is in the rear end of advancing the medicine mouth.

Preferably, the quantitative chips are arranged at equal intervals outside the quantitative axis.

Preferably, the mosaic structure of being convenient for comprises sealing washer, disk seat, flange seat, fixed orifices and carousel, the disk seat is fixed connection respectively in the outside of water inlet and delivery port, the one end fixedly connected with flange seat of disk seat, the one end fixedly connected with sealing washer of flange seat, the inside of flange seat evenly is provided with the fixed orifices, the one end of disk seat is provided with the carousel.

Preferably, the buffering protective structure comprises a buffering seat, a spring, an inner groove, a limiting block and a connecting rod, wherein the buffering seat is fixedly connected to the bottom ends of the two sides in the treatment tank respectively, the inner groove is formed in the buffering seat, the spring is fixedly connected to the bottom end of the inner groove, the connecting rod is fixedly connected to the two sides of the bottom end of the filter residue net respectively, and the limiting block is fixedly connected to the bottom end of the connecting rod.

Preferably, the bottom end of the connecting rod penetrates through the inner part of the inner groove, and the limiting block is connected with the inner groove in a sliding mode.

Compared with the prior art, the invention has the beneficial effects that: the micro-power sewage treatment equipment with the improved decomposition speed can break up the sewage with larger volume in the sewage, improve the decomposition rate of the sewage, has higher sewage treatment efficiency, realizes odor adsorption and purification on the internal sewage, avoids polluting the environment nearby, realizes convenient and quantitative medicament placement, can meet the use requirement, realizes convenient introduction and derivation of the sewage, is more convenient to use, realizes buffer protection on the filter residue net, and prevents the filter residue net from being damaged due to larger impact force of the sewage;

(1) when the device is used, sewage is injected into the treatment tank through the water inlet, a medicament is added into the treatment tank through the quantitative medicament feeding mechanism, then the servo motor is started, the servo motor drives the second rotating shaft to rotate, the second rotating shaft drives the driving gear to rotate, and the first rotating shaft drives the first rotating shaft to rotate through the driving gear and the driven gear, the synchronous rotation of the first rotating shaft and the second rotating shaft can lead the cutter and the grid plate to break up the sewage with larger volume in the sewage and stir the sewage and the medicament, thus greatly improving the decomposition speed of the sewage in the sewage and further improving the treatment efficiency of the sewage;

(2) by arranging the fixed cover, the activated carbon net, the clamping grooves and the clamping blocks, when the device is used, odor emitted from sewage can be adsorbed and purified by utilizing the adsorbability of the activated carbon net, so that the nearby environment can be protected, and meanwhile, the clamping grooves and the clamping blocks can be convenient for disassembling and replacing the activated carbon net, so that the device is simple to operate and convenient to use;

(3) when the quantitative drug feeding device is used, the driving motor is started, the driving motor drives the quantitative shaft to rotate, the quantitative shaft drives the quantitative piece to turn over at a constant speed, and the drug is quantitatively turned into the treatment tank, so that constant-speed and quantitative drug feeding can be realized, and the using requirement can be met;

(4) by arranging the sealing ring, the valve seat, the flange seat, the fixing hole and the rotary table, when the water inlet and the water outlet are used, the water inlet and the water outlet are connected through the flange, so that the water inlet and the water outlet can be conveniently spliced with a water pipe, meanwhile, the sealing ring can increase the sealing performance between the flanges, the sewage can be conveniently led in and led out, and the use is very convenient;

(5) through being provided with buffer seat, spring, inside groove, stopper and connecting rod, when using, the inside that sewage got into the treatment tank falls on the filter residue net, and the stopper slides including the inslot portion this moment, and the spring can play the buffering effect, prevents that the filter residue net from damaging because the too big appearance of the impact force of sewage from prolonging the life of filter residue net.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic bottom view of a partial cross-sectional structure of the adsorption purification structure of the present invention;

FIG. 3 is a side view partially in section of the metered dose mechanism of the present invention;

FIG. 4 is a side view schematic of the drive and driven gears of the present invention;

FIG. 5 is a side view partially in section view of the present invention for facilitating splicing of structures;

FIG. 6 is a side view schematic of the blade and cutter of the present invention.

In the figure: 1. a treatment tank; 2. a first rotating shaft; 3. a blade; 4. a cutter; 5. a servo motor; 6. a second rotating shaft; 7. a grid sheet; 8. an adsorption purification structure; 801. a fixed cover; 802. an activated carbon mesh; 803. a card slot; 804. a clamping block; 9. a water inlet; 10. a support; 11. a solar panel; 12. a quantitative medicine feeding mechanism; 1201. a medicine inlet; 1202. quantifying the tablets; 1203. a dosing shaft; 1204. a drive motor; 13. a drive gear; 14. a driven gear; 15. filtering a residue net; 16. a water outlet; 17. the splicing structure is convenient; 1701. a seal ring; 1702. a valve seat; 1703. a flange seat; 1704. a fixing hole; 1705. a turntable; 18. a buffer protection structure; 1801. a buffer seat; 1802. a spring; 1803. an inner tank; 1804. a limiting block; 1805. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-6, a micro-power sewage treatment device with improved decomposition speed comprises a treatment tank 1 and a water inlet 9, wherein an adsorption purification structure 8 is arranged at the top end inside the treatment tank 1, the water inlet 9 is arranged at one side of the top end of the treatment tank 1, a quantitative medicine feeding mechanism 12 is arranged at the other side of the top end of the treatment tank 1, a support 10 is fixedly connected to one end of the quantitative medicine feeding mechanism 12, a solar panel 11 is arranged at the top end of the support 10, a water outlet 16 is arranged at the bottom end of one side of the treatment tank 1, a splicing facilitating structure 17 is arranged at each of the top end of the water inlet 9 and one side of the water outlet 16, a filter residue net 15 is arranged at a position close to the bottom end inside the treatment tank 1, a buffer protection structure 18 is;

referring to fig. 1-6, a micro-power sewage treatment device with improved decomposition speed further comprises a stirring and smashing mechanism, wherein the stirring and smashing mechanism comprises a first rotating shaft 2, the first rotating shaft 2 is movably connected at the middle position inside a treatment tank 1, two ends outside the first rotating shaft 2 are fixedly connected with blades 3, one side of each blade 3 is uniformly and fixedly connected with a cutter 4, a position inside the treatment tank 1 close to the top end is movably connected with a second rotating shaft 6, one side of the second rotating shaft 6 is provided with a servo motor 5, the type of the servo motor 5 can be ACM, two ends outside the second rotating shaft 6 are fixedly connected with grid pieces 7, one side outside the first rotating shaft 2 and one side outside the second rotating shaft 6 are fixedly connected with a driving gear 13, and one side of the treatment tank 1 is movably connected with a driven gear 14;

one side of the grid 7 is uniformly provided with slots, the length and the width of the cutter 4 are both smaller than those of the slots, and the cutters 4 correspond to the slots one by one;

the driving gear 13 and the driven gear 14 are equal in size, and the driven gear 14 is respectively meshed and connected with the driving gear 13 on one side of the outer part of the first rotating shaft 2 and the second rotating shaft 6;

specifically, as shown in fig. 1, fig. 4 and fig. 6, inject sewage into the inside of treatment tank 1 through water inlet 9, with the inside that the medicament entered medicine mechanism 12 to add treatment tank 1 through the ration, then start servo motor 5, servo motor 5 drives second pivot 6 and is rotating, second pivot 6 drives drive gear 13 and rotates, second pivot 6 drives first pivot 2 through drive gear 13 and driven gear 14 and rotates, first pivot 2 and the synchronous rotation of second pivot 6 can make cutter 4 and grid 7 smash the great filth of volume in the sewage, and can stir sewage and medicament, can improve the decomposition speed of filth in the sewage so greatly, thereby improve the treatment effeciency of sewage.

Example 2: the adsorption purification structure 8 consists of a fixed cover 801, an activated carbon net 802, clamping grooves 803 and clamping blocks 804, the fixed cover 801 is respectively and fixedly connected with two ends of the top inside the treatment tank 1, the clamping grooves 803 are uniformly arranged on the inner side wall of the fixed cover 801, the activated carbon net 802 is arranged inside the fixed cover 801, and the clamping blocks 804 are uniformly arranged outside the activated carbon net 802;

the fixture block 804 is embedded in the fixture groove 803, and the fixture groove 803 is connected with the fixture block 804 in a clamping manner;

specifically, as shown in fig. 1 and fig. 2, the absorption of the activated carbon net 802 is utilized to adsorb and purify the odor emitted from the sewage, so that the environment nearby can be protected, and meanwhile, the clamping groove 803 and the clamping block 804 can be used for conveniently detaching and replacing the activated carbon net 802, so that the operation is simple and the use is convenient.

Example 3: the quantitative medicine feeding mechanism 12 is composed of a medicine feeding port 1201, a quantitative sheet 1202, a quantitative shaft 1203 and a driving motor 1204, the medicine feeding port 1201 is fixedly connected to one side of the top end of the treatment tank 1, the quantitative shaft 1203 is movably connected between two ends of the interior of the medicine feeding port 1201, the quantitative sheet 1202 is uniformly and fixedly connected to the exterior of the quantitative shaft 1203, the driving motor 1204 is fixedly connected to the rear end of the medicine feeding port 1201, and the type of the driving motor 1204 can be Y90L-2;

the quantitative chips 1202 are arranged at equal intervals outside the quantitative axis 1203;

specifically, as shown in fig. 1 and fig. 3, the driving motor 1204 is started, the driving motor 1204 drives the quantitative shaft 1203 to rotate, the quantitative shaft 1203 drives the quantitative sheet 1202 to turn over at a constant speed, and the medicine is quantitatively turned into the treatment tank 1, so that medicine can be fed at a constant speed and quantitatively, and the use requirement can be met.

Example 4: the splicing structure 17 consists of a sealing ring 1701, a valve seat 1702, a flange seat 1703, a fixing hole 1704 and a rotating disc 1705, the valve seat 1702 is fixedly connected to the outer parts of the water inlet 9 and the water outlet 16 respectively, one end of the valve seat 1702 is fixedly connected with the flange seat 1703, one end of the flange seat 1703 is fixedly connected with the sealing ring 1701, the fixing holes 1704 are uniformly arranged in the flange seat 1703, and one end of the valve seat 1702 is provided with the rotating disc 1705;

specifically, as shown in fig. 1 and 5, the water inlet 9 and the water outlet 16 are connected by flanges, so that the water inlet 9 and the water outlet 16 can be conveniently spliced with a water pipe, meanwhile, the sealing ring 1701 can increase the sealing performance between the flanges, so that the sewage can be conveniently led in and led out, and the use is very convenient.

Example 5: the buffer protection structure 18 consists of buffer seats 1801, springs 1802, inner grooves 1803, limit blocks 1804 and connecting rods 1805, wherein the buffer seats 1801 are respectively and fixedly connected to the bottom ends of two sides inside the treatment tank 1, the inner grooves 1803 are arranged inside the buffer seats 1801, the bottom ends of the inner grooves 1803 are respectively and fixedly connected with the springs 1802, the connecting rods 1805 are respectively and fixedly connected to two sides of the bottom end of the filter residue net 15, and the bottom ends of the connecting rods 1805 are fixedly connected with the limit blocks 1804;

the bottom end of the connecting rod 1805 penetrates into the inner groove 1803, and the limiting block 1804 is connected with the inner groove 1803 in a sliding manner;

specifically, as shown in fig. 1, inside that sewage got into treatment tank 1 falls on filter residue net 15, and stopper 1804 slides inside inner trough 1803 this moment, and spring 1802 can play the cushioning effect, prevents that filter residue net 15 from damaging because the impact force of sewage is too big, extension filter residue net 15's life.

The working principle is as follows: when the device is used, firstly, sewage is injected into the treatment tank 1 through the water inlet 9, a medicament is added into the treatment tank 1 through the quantitative medicament feeding mechanism 12, then the servo motor 5 is started, the servo motor 5 drives the second rotating shaft 6 to rotate, the second rotating shaft 6 drives the driving gear 13 to rotate, the second rotating shaft 6 drives the first rotating shaft 2 to rotate through the driving gear 13 and the driven gear 14, the first rotating shaft 2 and the second rotating shaft 6 synchronously rotate to enable the cutter 4 and the grid plate 7 to break up large-volume dirt in the sewage, and the sewage and the medicament can be stirred, so that the decomposition speed of the dirt in the sewage can be greatly improved, and the treatment efficiency of the sewage is improved.

Then, the driving motor 1204 is started, the driving motor 1204 drives the quantitative shaft 1203 to rotate, the quantitative shaft 1203 drives the quantitative sheet 1202 to turn over at a constant speed, and the medicine is quantitatively turned into the treatment tank 1, so that the medicine can be fed at a constant speed and quantitatively, and the use requirement can be met.

Then, utilize the adsorptivity of activated carbon net 802, can adsorb the stink that gives out in the sewage and purify to can protect near environment, draw-in groove 803 and fixture block 804 can be convenient for dismantle the change, easy operation, convenient to use to activated carbon net 802 simultaneously.

Then, the water inlet 9 and the water outlet 16 are connected through flanges, so that the water inlet 9 and the water outlet 16 can be conveniently spliced with a water pipe, meanwhile, the sealing ring 1701 can increase the sealing performance between the flanges, the sewage can be conveniently led in and led out, and the use is very convenient.

Finally, the inside that sewage got into treatment tank 1 falls on filter residue net 15, stopper 1804 slides inside inner trough 1803 this moment, and spring 1802 can play the cushioning effect, prevents that filter residue net 15 from damaging because the impact force of sewage is too big, extension filter residue net 15's life.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The utility model provides a little power sewage treatment device that decomposition speed improves, includes treatment tank (1) and water inlet (9), its characterized in that: the device is characterized in that an adsorption purification structure (8) is arranged at the top end inside the treatment tank (1), a water inlet (9) is arranged on one side of the top end of the treatment tank (1), a quantitative medicine feeding mechanism (12) is arranged on the other side of the top end of the treatment tank (1), a support (10) is fixedly connected to one end of the quantitative medicine feeding mechanism (12), a solar panel (11) is arranged at the top end of the support (10), a water outlet (16) is arranged at the bottom end of one side of the treatment tank (1), splicing structures (17) convenient to splice are arranged at the top end of the water inlet (9) and one side of the water outlet (16), a filter residue net (15) is arranged at a position, close to the bottom end, inside the treatment tank (1), a buffer protection structure (18) is arranged at the bottom end of the filter residue net;

stirring is smashed the mechanism and is included first pivot (2), first pivot (2) swing joint is in the inside intermediate position department of processing jar (1), outside both ends fixedly connected with blade (3) of first pivot (2), the even fixedly connected with cutter (4) in one side of blade (3), the inside position department swing joint who is close to the top of processing jar (1) has second pivot (6), one side of second pivot (6) is provided with servo motor (5), the equal fixedly connected with grid piece (7) in the outside both ends of second pivot (6), the equal fixedly connected with drive gear (13) in one side of first pivot (2) and second pivot (6) outside, one side swing joint of processing jar (1) has driven gear (14).

2. A micropower sewage treatment plant with enhanced decomposition rate according to claim 1, wherein: one side of the grid sheet (7) is uniformly provided with grooves, the length and the width of the cutter (4) are smaller than those of the grooves, and the cutters (4) correspond to the grooves one to one.

3. A micropower sewage treatment plant with enhanced decomposition rate according to claim 1, wherein: the driving gear (13) and the driven gear (14) are equal in size, and the driven gear (14) is respectively meshed and connected with the driving gear (13) on one side of the outer portions of the first rotating shaft (2) and the second rotating shaft (6).

4. A micropower sewage treatment plant with enhanced decomposition rate according to claim 1, wherein: adsorb purification structure (8) and constitute by fixed cover (801), activated carbon net (802), draw-in groove (803) and fixture block (804), fixed cover (801) fixed connection respectively is at the both ends of handling jar (1) inside top, evenly be provided with draw-in groove (803) on the inside wall of fixed cover (801), the inside of fixed cover (801) is provided with activated carbon net (802), the outside of activated carbon net (802) evenly is provided with fixture block (804).

5. The micropower sewage treatment plant with enhanced decomposition rate of claim 4, wherein: the clamping block (804) is embedded in the clamping groove (803), and the clamping groove (803) is clamped and connected with the clamping block (804).

6. A micropower sewage treatment plant with enhanced decomposition rate according to claim 1, wherein: the quantitative medicine feeding mechanism (12) is composed of a medicine feeding port (1201), a quantitative piece (1202), a quantitative shaft (1203) and a driving motor (1204), the medicine feeding port (1201) is fixedly connected to one side of the top end of the treatment tank (1), the quantitative shaft (1203) is movably connected between two ends inside the medicine feeding port (1201), the quantitative piece (1202) is uniformly and fixedly connected to the outer portion of the quantitative shaft (1203), and the driving motor (1204) is fixedly connected to the rear end of the medicine feeding port (1201).

7. A micropower sewage treatment plant with increased decomposition rate according to claim 6, wherein: the quantitative chips (1202) are arranged at equal intervals outside the quantitative axis (1203).

8. A micropower sewage treatment plant with enhanced decomposition rate according to claim 1, wherein: splicing structure (17) of being convenient for comprises sealing washer (1701), disk seat (1702), flange seat (1703), fixed orifices (1704) and carousel (1705), disk seat (1702) fixed connection is respectively in the outside of water inlet (9) and delivery port (16), the one end fixedly connected with flange seat (1703) of disk seat (1702), the one end fixedly connected with sealing washer (1701) of flange seat (1703), the inside of flange seat (1703) evenly is provided with fixed orifices (1704), the one end of disk seat (1702) is provided with carousel (1705).

9. The method of claim 1, wherein the wastewater treatment system comprises: firstly, sewage is injected into the treatment tank 1 through the water inlet 9, a medicament is added into the treatment tank 1 through the quantitative medicament feeding mechanism 12, then the servo motor 5 is started, the servo motor 5 drives the second rotating shaft 6 to rotate, the second rotating shaft 6 drives the driving gear 13 to rotate, the second rotating shaft 6 drives the first rotating shaft 2 to rotate through the driving gear 13 and the driven gear 14, the first rotating shaft 2 and the second rotating shaft 6 synchronously rotate to enable the cutter 4 and the grid plate 7 to break up large-volume dirt in the sewage, and the sewage and the medicament can be stirred, so that the decomposition speed of the dirt in the sewage can be greatly improved, and the treatment efficiency of the sewage is improved; then, the driving motor 1204 is started, the driving motor 1204 drives the quantitative shaft 1203 to rotate, the quantitative shaft 1203 drives the quantitative sheet 1202 to turn over at a constant speed, and the medicine is quantitatively turned into the treatment tank 1, so that constant-speed and quantitative medicine feeding can be realized, and the use requirement can be met; then, the odor emitted from the sewage can be adsorbed and purified by utilizing the adsorbability of the activated carbon net 802, so that the nearby environment can be protected, meanwhile, the clamping groove 803 and the clamping block 804 can facilitate the detachment and replacement of the activated carbon net 802, the operation is simple, and the use is convenient; then, the water inlet 9 and the water outlet 16 are connected through flanges, so that the water inlet 9 and the water outlet 16 can be conveniently spliced with a water pipe, meanwhile, the sealing ring 1701 can increase the sealing performance between the flanges, the sewage can be conveniently led in and led out, and the use is very convenient;

finally, the inside that sewage got into treatment tank 1 falls on filter residue net 15, stopper 1804 slides inside inner trough 1803 this moment, and spring 1802 can play the cushioning effect, prevents that filter residue net 15 from damaging because the impact force of sewage is too big, extension filter residue net 15's life.

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