KR101858670B1 - Eco-friendly sewage disposal system - Google Patents

Abstract

The present invention relates to an environmentally friendly sewage treatment system, and more specifically relates to an environmentally friendly sewage treatment system which is able to discharge a certain size of ground food waste through an additional environmental friendly process such as microorganism treatment while preventing introduction of malodor generated in a first septic tank through a sewer pipe in a process of discharging the food waste ground by a disposer installed in a sink of each household with waste water through the sewer pipe.

Description

Environmentally friendly sewage treatment system {ECO-FRIENDLY SEWAGE DISPOSAL SYSTEM}

The present invention relates to an environmentally friendly sewage treatment system in the field of sewage treatment technology, and more particularly, to an environmentally friendly sewage treatment system in which a food waste disintegrated into a small size by a disposer installed in a sink of each household is discharged through sewage pipes together with sewage Sized food waste can be discharged through a separate eco-friendly process such as microbial treatment and an environmentally friendly sewage treatment system for preventing the odor generated in the first purification tank and the like from being introduced into the room through a sewage pipe or the like.

Generally, the kitchen of a home or a restaurant is provided with a sink for washing food or washing dishes in the kitchen. A sink for discharging the sewage generated in the process of washing and washing dishes is provided with a kitchen container and food garbage Is blocked by the wastewater from flowing along with the wastewater.

As described above, the food waste filtered through the ordinary filter installed in the sink drain is mixed with the food waste generated during the cooking process and the food waste left after the meal and collected in a separate collection machine or a collection bag, .

In addition, the food waste put out of the building for collection does not only damage the aesthetics of the city but also pollute the surrounding environment by the odor or polluted water discharged from the food waste.

As a conventional technique which partially improves such a problem, Korean Patent Registration No. 10-1134677 (Apr. 04, 2012) discloses a 'food waste disposal system'.

However, the conventional food waste sewage treatment system has a problem that the odor generated in the first purification tank flows into the room through the sewage pipe.

Korea Patent Registration No. 10-1134677 (Apr. 9, 2012) 'Food Waste Sewage Treatment System'

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a disposer for disinfecting food waste, The above food waste can be discharged through a separate eco-friendly process such as microbial treatment, and an eco-friendly sewage treatment system for preventing the odor generated in the first purification tank or the like from entering the room through a sewage pipe or the like.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, the present invention provides a disposer (120) for disposing food waste in a kitchen sink drain so that the food waste is crushed finely and then the ground food waste is discharged together with sewage through a sewage pipe (130); A first purification tank (140) for purifying the sewage water by a filtration member installed therein in the form of a container having a constant volume collecting the sewage discharged from the sink drainage; A screen 150 in the form of a mesh screen provided at an upper side of the first purification tank 140 so as to filter out food waste particles having a predetermined size or more from the finely crushed food waste particles in the disposer 120; A screen vibration means 160 installed on one side of the screen 150 to shake the screen 150 by applying vibration to the screen 150; Brush operating means 170 installed on the lower side of the screen 150 so that food garbage particles in the eye of the screen 150 are dropped; A microbial treatment tank 180 installed on one side of the first purification tank 140 so as to collect food waste particles filtered through the screen 150; A microorganism injecting means 190 for injecting microorganisms into the microorganism treatment tank 180; And a second purification tank (200) configured to purify the sewage water by a filtration member installed therein in a tubular shape having a predetermined volume to collect the first purified purified water passing through the inside of the first purification tank (140) The sewage treatment system according to claim 1, further comprising a malodor blocking part (400) for blocking offensive odors generated in the first purification tank (140), wherein the malodor blocking part (400) A support member 410 including a support ring 411 coupled to the first ring 411 and a support jaw 412 disposed inside the support ring 411 and seated on the first purification chamber 140; A hollow 421 through which a lower portion of the sewage pipe 130 passes is formed in the upper portion of the first purified water tank 140 which is accommodated inside the upper portion of the support ring 411 and is seated in the support jaw 412, A cover 420 is formed; And an opening and closing means 430 for opening and closing a lower portion of the sewage pipe 130. The opening and closing means 430 includes an opening and closing plate 431 having an upper surface opened and closed at a lower portion of the sewage pipe 130; A fixing bar 432 whose upper portion is connected to the cover 420 and which is rotatably hinged to both ends of the opening / closing plate 431 at a lower portion thereof; And a weight 433 disposed at the other end of the opening and closing plate 431. The weight 433 presses the other end of the opening and closing plate 431 downward with a predetermined load When the pressure of the food waste or wastewater flowing through the sewage pipe 130 is higher than the load of the weight 433, the opening / closing plate 431 is rotated And the sewage pipe (130) is opened.

According to the present invention, food wastes having a predetermined size or larger among food wastes ground by a disposer installed in a sink of each household are separated from wastewater and then decomposed through an eco-friendly process, thereby facilitating the treatment of food wastes have.

Further, there is an effect that the odor generated in the first purification tank or the like can be prevented from flowing into the room through the sewer pipe or the like.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a configuration diagram illustrating an environmentally friendly sewage treatment system according to the present invention.
2 is an operational state diagram illustrating an environmentally friendly wastewater treatment system according to the present invention.
3 is another operational state diagram illustrating an environmentally friendly wastewater treatment system according to the present invention.
4 is a block diagram showing another embodiment of an environmentally friendly wastewater treatment system according to the present invention.
5 is an operational state diagram illustrating another embodiment of an environmentally friendly wastewater treatment system according to the present invention.
FIG. 6 is a view illustrating a state where the malodor blocking unit is provided in the environmentally friendly sewage treatment system according to the present invention.
And
Fig. 7 is a plan view showing the cover in Fig. 6. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And should not be construed as limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein.

It should be understood that the embodiments according to the concept of the present invention are not limited to the particular mode of disclosure but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Since the present invention uses the below-described prior-art 1134677 as it is, all of the features of the device configuration described below can be understood as those described in Patent Registration No. 1134677. [

However, the present invention is not limited to the structure disclosed in the above-mentioned Japanese Patent No. 1134677, in which the "food waste sewage treatment system" is replaced with an "environmentally friendly sewage treatment system", and a structure for blocking the odor generated in the first purification tank Which is the most important constituent feature.

Therefore, the device structure, characteristics, and operation relationship described below will be referred to as the content of the above-mentioned U.S. Patent No. 1134677, and the configuration related to the main features of the present invention will be described in detail at the rear end.

Reference numeral 100 in the figure designates an environmentally friendly sewage treatment system according to an embodiment of the present invention.

1 to 5, an environmentally friendly wastewater treatment system 100 according to the present invention includes a disposer 120 for finely grinding food waste into a sink 110 of a home or business kitchen, Is installed as a basic requirement.

That is, the eco-friendly wastewater treatment system 100 collects the sewage discharged through the disposer 120, the sink 110, and the like installed in a sink drain of a home or business kitchen, A first purified water tank 140 installed on the scale of a unit or a unit of a house so that the tea can be purified, a food waste particle having a predetermined size or more can be filtered out of the finely pulverized food waste particles passing through the disposer 120 Screen vibrating means 160 for increasing the filtration efficiency by vibrating the screen 150 in the process of filtering the food waste particles through the screen 150 and the screen 150 installed on the upper side of the first purification tank 140, A brush operating means 170 for blowing the screen 150 so that the finely pulverized food waste particles are not caught in the eyes of the screen 150 through the disposer 120, A microbial treatment tank 180 installed on one side of the first purification tank 140 so as to collect food waste particles having a predetermined size or more, microorganism input means 190 for injecting microorganisms into the microbial treatment tank 180, And a second purifying tank 200 installed on the basis of the area to receive the first purified purified water from the first purification tank.

The environmentally friendly wastewater treatment system 100 is constructed such that individual devices such as the screen vibration means 160, the brush operation means 170 and the microorganism input means 190 are automatically operated in the sewage treatment process of food waste. The control unit 300 may further include a control unit

The controller 300 controls the screen vibrating unit 160 and the brush operating unit 170 based on the fact that the time of the discharge of the food waste and the time of the non-discharge of the food waste are distinguished in the kitchens of homes, The setting can be made such that the operation is on or off.

For example, the operation of the screen vibrating unit 160 and the brush operating unit 170 and the like may be controlled in accordance with the control of the control unit 300 at a time of early morning from the midnight when almost no food is cooked at home, It can be set not to be done automatically to reduce power usage or to prevent noise from operating peripherals.

As shown in the drawing, the sewage pipe 130 is provided with a sensor 310 for measuring the amount of wastewater passing through the sewer pipe 130, and the measured value of the sensor 310 is supplied to the controller 300, .

The disposer 120 may be a commercially available model, and a dedicated model for the environmentally friendly sewage treatment system 100 may be used.

The first purified water tank 140 is installed in an individual house or a communal house. The first purified water tank 140 collects wastewater discharged from the sink 110 or the like, and has a filtration member (not shown) .

The screen 150 is inclined at the upper side of the first purification tank 140 and has a net shape having a predetermined size of eyes.

That is, in the course of discharging finely pulverized food waste together with the wastewater by the disposer 120, the food waste particles having a predetermined size or larger can be prevented from passing through the eyes of the screen 150, And a screen 150 is installed on the upper side.

Screen vibrating means 160 is installed on one side of the screen 150 in order to more efficiently filter the food waste particles through the screen 150.

The screen vibrating unit 160 may include an electric motor 162 and a cam shaft 164 so that the screen 150 may shake at regular intervals.

A brush operating means 170 is installed on the lower side of the screen 150 to prevent food waste particles from being clogged in the eyes of the screen 150.

The brush operating means 170 comprises a chain 172 mounted orbitally below the screen 150 as shown in the figure, a drive motor 174 for driving the chain 172, And a brush 176 mounted on the brush 176. [

One side of the first purification tank 140 is provided with a microorganism treatment tank 180 which collects food waste particles having a predetermined size or more filtered through the screen 150 into one site.

One side of the microorganism treatment tank 180 is provided with a microorganism injecting means 190 capable of injecting microorganisms regularly so that decomposition of food waste contained in the microorganism treatment tank 180 can be promoted.

Accordingly, the eco-friendly wastewater treatment system 100 can treat the food waste by the microorganisms in the microorganism treatment tank 180 so that the environmentally-friendly wastewater treatment can be performed.

The microbial treatment tank 180 may be installed in a structure detachable from the first purification tank 140.

That is, when a certain amount or more of food waste is accumulated in the microorganism treatment tank 180, the microorganism treatment tank 180 may be moved to another site by using a separate transportation means so that more effective treatment can be performed .

In particular, as shown in FIG. 4, a compression means 182 may be provided on the upper side of the microorganism treatment tank 180 to compress food waste in the microorganism treatment tank 180.

A waste water transfer passage 184 is formed so that the wastewater in the microbial treatment tank 180 can be moved into the first purification tank 140 while the compression means 182 operates, A shutoff valve 186 may be provided on one side of the sewage transfer passage 184 so as not to move into the treatment bath 180.

The second purifying tank 200 is formed in a tubular shape having a relatively large volume as compared with the first purifying tank to which the first purified water collected in the first purifying tank installed in an individual house or a multi- do.

The second purification tank 200 is installed on the basis of an area such as a conventional purification tank installed in a sewage end treatment plant or the like.

In the second purification tank 200, a plurality of aeration tanks, a settling tank and the like divide the inner section, while a filtration member or the like is installed in the required section.

The second aeration tank 200 is partitioned into a plurality of chambers as shown in the figure. The first aeration tank 210, the second aeration tank 220, and the second aeration tank 210 are disposed in the order of flow of the wastewater flowing from the first purification tank 140. And a settling tank (230).

The air diffuser 240 is installed inside the first and second aeration tanks 210 and 220.

The eco-friendly wastewater treatment system 100 is configured such that a large amount of oxygen or the like generated in the air pump 242 driven by the timer 244 is supplied to the first aeration tank 210 and the second aeration tank 210 And flows into the inside of the aeration tank 220 to promote decomposition of the wastewater.

The first aeration tank 210 and the second aeration tank 220 of the second purification tank 200 are provided with filtration members 212 and 222 capable of forming aerobic microorganisms.

A desorption filter 260 may be installed on the passageway 202 connecting the first and second aeration tanks 210 and 220 and the passage 204 connecting the second aeration tank 220 and the settling tank 230.

As the filter 260 installed in the second purification tank 200, a member made of coconut skin or the like may be used.

The sedimentation tank 230 separates the sediment from the wastewater that has passed through the first and second aeration tanks 210 and 220.

A wastewater bypass line 250 is installed between the settling tank 230 and the first aeration tank 210. The wastewater bypass line 250 is connected to the settling tank 230 when there are many floating matters in the settling tank 230. [ To be bypassed to the primary settling tank (210).

Hereinafter, an operation of the environmentally friendly wastewater treatment system according to an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a view for explaining a state in which the environmentally-friendly wastewater treatment system 100 according to the embodiment of the present invention is operated at a time when many food wastes are generated and treated. As shown in the figure, the screen vibration means 160 and the brush operation means 170 are turned on.

That is, the screen vibration means 160 and the brush operation means (not shown) are disposed in the screen 150 so that the food waste particles having a predetermined size or more can be effectively separated from the screen 150 in the process of discharging the finely ground food waste together with the waste water by the disposer 120 170 are turned on.

On the other hand, the food waste generated in the kitchen of the home or business is finely crushed by the disposer 120, and discharged through the sewer pipe 130 together with the sewage generated in the washing process.

The food waste particles discharged together with the wastewater are sprayed on the upper side of the screen 150. The food waste particles having a size smaller than the eye of the screen 150 pass through the eyes of the screen 150 to the first purified water tank 140 The food waste particles having a size larger than that of the screen 150 are slid downwardly of the screen 150 and flow into the microorganism treatment tank 180.

The screen 150 is shaken at a predetermined cycle by the screen vibrating means 160 and the lower portion of the screen 150 is rotated by the brush 150 of the brush operating means 170, (176).

On the other hand, the wastewater flowing into the first purification tank 140 through the eyes of the screen 150 is firstly purified by a filter such as a filter provided in the first purification tank 140, As shown in FIG.

In the second purification tank 200 provided in a sewage terminal treatment plant or the like, filtration processes such as aeration and sedimentation proceed in succession as in the usual case, and the sewage is purified through a filtration member or the like installed therein.

Particularly, the food waste particles flowing into the microorganism treatment tank 180 are accelerated by the microorganisms injected from the microorganism injecting means 190.

3 is a view for explaining a state in which the environmentally friendly wastewater treatment system 100 is operated at a time when the generation and treatment of food waste are almost not performed. As shown in the drawing, the screen vibration means 160 and the brush operation means 170 are in an off-state.

That is, the disposer 120 is hardly used at home or at a business place at a time when food is hardly cooked at midnight and early morning.

At this time, the operation of the screen vibrating means 160 and the brush operating means 170 is not performed, so that waste of electric power and generation of noise can be reduced.

The functions of the first purification tank 140, the screen 150, the microorganism treatment tank 180, and the second purification tank 200 are normally performed as usual.

When the microorganism treatment tank 180 is detachable from the first purification tank 140, the microorganism treatment tank 180 containing the food waste may be transferred to a separate place through another transportation means to treat the food waste .

In addition, as shown in FIG. 5, when the compression means 182 is operated, the volume of food waste is reduced.

The liquid wastewater present in the microorganism treatment tank 180 during the operation of the compression means 182 is moved to the first purification tank 140 through the wastewater movement passage 184 while the shutoff valve 186 is opened , And is treated together with the wastewater in the first purification tank (140).

As described above, according to the eco-friendly wastewater treatment system 100, even if the food waste ground by the disposer 120 installed in the kitchen sink of a home or business is directly discharged through the sewage pipe 130, the food waste particles are separated from the wastewater On the other hand, since the separated food waste particles are treated by the microorganisms, the problems caused by the use of the disposer 120 can be solved.

Accordingly, the installation of the disposer 120 in the kitchen of a home or business can be justified, so that difficulties associated with food waste disposal at homes and businesses can be solved.

In the present invention, the configuration of the malodor blocking unit 400 for blocking the malodor generated in the first purified water tank 140 is further implemented, as shown in FIG. 6 through FIG.

The malodor blocking unit 400 prevents odors generated in the first purification tank 140 and the like from entering the room through a sewage pipe or the like.

The malodor blocking unit 400 includes a support ring 411 coupled to the upper portion of the first purification tank 140 and a support ring 411 mounted on the upper portion of the first purification tank 140, A supporting member 410 including a supporting jaw 412 and a supporting member 411 for sealing the upper portion of the first purified water tank 140 which is received in the upper portion of the supporting ring 411 and is seated on the supporting jaw 412, A lid 420 for forming a hollow 421 through which a lower portion of the sewage pipe 130 passes and an opening and closing means 430 for opening and closing the lower portion of the sewage pipe 130.

The support ring 411 has the same shape as the circumference of the first purification tank 140 and the lower part of the support ring 411 is coupled to the upper portion of the first purification tank 140.

The support jaw 412 extends along the inner circumference of the support ring 411 and is mounted on the upper portion of the first purification tank 140 while protruding from the inside of the support ring 411.

The support jaw 412 is preferably stably installed on the first purification tank 140 while protruding inward from the inner circumference of the first purification tank 140.

The cover 420 is formed in a plate shape and is inserted into the upper portion of the support ring 411 to be seated on the support jaw 412 so that the upper portion of the first purified water tank 140 opened can be sealed.

The lid 420 may be disposed on the left and right sides of the sewer pipe 130 while being branched to a pair of lid plates 422.

Accordingly, the lid 420 can be smoothly separated from the sewer pipe 130 while being coupled to the outside of the sewer pipe 130.

This allows the screen 150, the screen vibrating means 160 and the brush operating means 170 provided in the first purifying tank 140 to be smoothly opened and closed with respect to the first purifying tank 140, Inspection and the like can be performed smoothly.
That is, the lid 420 is divided into a pair of lid plates 422, disposed on the left and right sides of the sewer pipe 130, detachably coupled to the outside of the sewer pipe 130, The screen vibration means 160 and the brush operation means 170 can be checked smoothly by opening and closing the screen 140,

The pair of lid plates 422 can be maintained in a state where they are mutually attached to the outside of the sewer pipe 130 by a magnetic force while the magnets 423 are provided on the contacting surfaces.

Preferably, each cover plate 422 is provided with a handle 424.

The handle 424 allows the cover plate 422 to be detached from the support member 410 in accordance with artificial pressurization and to be smoothly coupled to the support member 410.

The malodor blocking unit 400 may further include a packing member 440 for hermetically sealing the periphery of the sewage pipe 130 and the hollow 421.

The packing member 440 may be made of silicone or rubber, and may be ring-shaped and coupled to the outside of the sewer pipe 130.

Accordingly, the packing member 440 seals the peripheries of the sewage pipe 130 and the hollow 421, thereby preventing the odor generated in the first purification tank 140 from flowing into the outside, that is, the room .

The malodor blocking unit 400 may further include a lid 450 for sealing the upper portion of the opened microbial treatment tank 180.

The lid 450 may take various forms to open and close the upper portion of the microorganism treatment tank 180.

The opening and closing means 430 includes an opening and closing plate 431 whose one end opens and closes the lower portion of the sewage pipe 130 and an upper portion is connected to the lid 420 and between both ends of the opening and closing plate 431, And a weight 433 disposed at the other end of the opening / closing plate 431. The weight 433 is hinge-

The opening and closing plate 431 has both ends extended in both sides of the first purifying tank 140 and is connected to the lower portion of the sewage pipe 130 so that one upper surface thereof can contact the sewage pipe 130, .

The upper portion of the fixing bar 432 is connected to a cover plate of the pair of cover plates 421 and the lower plate is extended downward while the open / close plate 431 is rotatably hinged.

It is preferable that the weight 433 has a load such that the opening / closing plate 431 can be rotated and opened by the pressurization of sewage or food waste flowing through the sewage pipe 130.

That is, the weight 433 has a predetermined load and normally presses the other end of the opening / closing plate 431 downward so that one end of the weight 433 can contact the sewer pipe 130.

When the weight of the food waste or wastewater flowing through the sewage pipe 130 is higher than the load of the weight 433, the weight 433 rotates the opening / closing plate 431, Open.

Accordingly, the open / close plate 431 normally blocks the sewer pipe 130 to prevent the odor generated in the first purified water tank 140 from flowing into the room through the sewer pipe 130.

Therefore, the malodor blocking unit 400 can prevent the odor generated in the first purification tank 140 or the like from entering the room through the sewage pipe 130 or the like.

100: Environment-friendly sewage treatment system 110: Sink
120: Disposer 130: Sewer
140: first purified water tank 150: screen
160: Screen vibration means 170: Brush operation means
180: Microorganism treatment unit 190: Microorganism input means
200: second purification tank 210: first aeration tank
220: second aeration tank 230: settling tank
240: Acanthra 250: Sewer bypass line
260: filter 300:
310: Sensor 400: Odor blocker
410: support member 411: support ring
412: Support jaw 420: Cover
421: hollow 422: cover plate
430 opening / closing means 440 packing member

Claims (1)

A disposer 120 installed in the sink drain of the kitchen so that the food garbage is finely crushed and then the crushed food garbage is discharged together with the sewage through the sewage pipe 130;
A first purification tank (140) for purifying the sewage water by a filtration member installed therein in the form of a container having a constant volume collecting the sewage discharged from the sink drainage;
A screen 150 in the form of a mesh screen provided at an upper side of the first purification tank 140 so as to filter out food waste particles having a predetermined size or more from the finely crushed food waste particles in the disposer 120;
A screen vibration means 160 installed on one side of the screen 150 to shake the screen 150 by applying vibration to the screen 150;
Brush operating means 170 installed on the lower side of the screen 150 so that food garbage particles in the eye of the screen 150 are dropped;
A microbial treatment tank 180 installed on one side of the first purification tank 140 so as to collect food waste particles filtered through the screen 150;
A microorganism injecting means 190 for injecting microorganisms into the microorganism treatment tank 180; And
And a second purifying tank (200) configured to purify the sewage water by a filtration member disposed therein in a tubular shape having a predetermined volume to collect the first purified purified water passing through the inside of the first purified water tank (140) A processing system comprising:
Further comprising a malodor blocking unit (400) for blocking odors generated in the first purification tank (140) and preventing odors from entering the room through the sewage pipe (130)
The malodor blocking unit 400 may include:
A supporting ring 411 coupled to the upper portion of the first purifying tank 140 and a supporting jaw 412 disposed inside the supporting ring 411 and seated on the upper portion of the first purifying tank 140 A support member 410 for supporting the support member 410;
A hollow 421 through which a lower portion of the sewage pipe 130 passes is formed in the upper portion of the first purified water tank 140 which is accommodated inside the upper portion of the support ring 411 and is seated in the support jaw 412, A cover 420 is formed;
Opening and closing means 430 for opening and closing the lower portion of the sewage pipe 130; And
And a packing member (440) hermetically sealing the periphery of the sewage pipe (130) and the hollow (421) to prevent the odor generated in the first purification tank (140) from flowing into the room,
The cover (420)
And is separated from the sewage pipe 130 by being opened and closed with respect to the first purified water tank 140 while being branched to a pair of cover plates 422 and disposed on the left and right sides of the sewage pipe 130, So that the screen 150, the screen vibration means 160 and the brush operation means 170 can be checked smoothly,
The pair of cover plates 422,
A magnet 423 is provided on the contact surface, and a grip 424 is provided on the outside of the sewage pipe 130 while being mutually attached by a magnetic force,
The handle (424)
So that the cover plate 422 can be detached from the support member 410 due to artificial pressurization and can be smoothly coupled to the support member 410,
The opening / closing means (430)
An open / close plate 431 having a top surface thereof opened and closed at a lower portion of the sewage pipe 130;
A fixing bar 432 whose upper portion is connected to the cover 420 and which is rotatably hinged to both ends of the opening / closing plate 431 at a lower portion thereof; And
And a weight 433 provided at the other end of the opening / closing plate 431,
The weight 433,
The other end of the opening and closing plate 431 is pressed downward with a constant load so that one end of the opening and closing plate 431 can be in contact with the sewage pipe 130 while the pressure of the food waste or wastewater flowing through the sewage pipe 130 And when the weight of the weight 433 is stronger than the load of the weight 433, the opening and closing plate 431 is rotated to open the sewage pipe 130.

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