Energy-saving and environment-friendly sewage multistage advanced treatment device
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an energy-saving and environment-friendly sewage multistage advanced treatment device.
Background
The sewage treatment is a process for purifying sewage to meet the water quality requirement of being discharged into a certain water body or reused, and the sewage multistage advanced treatment device is used for removing pollutants in the sewage, so that water resources and ecological environment are protected, and the cyclic utilization of the water resources is realized.
In the prior art, when sewage is treated, a medicament is added into the sewage to promote chemical reaction of harmful substances therein and generate colloid substances, however, in the process of medicament administration, due to factors such as density, dissolution characteristics and the like of the medicament, the traditional medicament administration mode is often suspended or retained on the surface of the sewage for a long time after the medicament is administered, and is difficult to rapidly and uniformly diffuse to the bottom of the sewage, so that the medicament is insufficient in contact with the harmful substances in the bottom area of the sewage, the reaction effect is greatly reduced, and the overall sewage treatment efficiency is seriously influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an energy-saving and environment-friendly sewage multistage advanced treatment device, so as to solve the problems in the background art.
In order to solve the technical problems, the invention is realized by the following technical scheme:
The invention relates to an energy-saving and environment-friendly sewage multistage advanced treatment device, which comprises a sewage treatment box body, wherein the bottom of the sewage treatment box body is distributed in a stepped manner, a water inlet pipeline is arranged at the top of one end of the sewage treatment box body, a flange is arranged at the outer end of the water inlet pipeline, the diameter of the inner end of the water inlet pipeline is narrowed, the inner end of the water inlet pipeline faces the inner bottom of the sewage treatment box body, an aeration pipe is arranged at the second stage of the bottom of the inner side of the sewage treatment box body, an aeration hole is formed in the top of the aeration pipe, a plurality of air inlet pipes are arranged at the bottom of the aeration pipe, a conveying pipe is arranged at the bottom of the air inlet pipe, a collecting pipe is arranged at the middle position of the conveying pipe, a medicament storage box is arranged at one side of the bottom of the sewage treatment box body, a liquid metal salt medicament is stored in the medicament storage box, an air pump is arranged at the other side of the bottom of the sewage treatment box body, an air flow pipe is arranged at the output end of the air pump, an atomizing pump is arranged at the side face of the medicament storage box, a water mist guide pipe is arranged at the output end of the atomizing pump, a water mist guide pipe is arranged at the water mist guide pipe, a counter-flow valve is arranged at the water mist guide pipe, and a collecting pipe is arranged at the inner collecting pipe.
Further, a rotary rod is rotatably arranged in one end of the sewage treatment box body, the rotary rod is of a cylindrical structure, guide plates which are uniformly distributed are arranged on the outer side of one end of the rotary rod, the guide plates are rotatably arranged below the inner end of a water inlet pipeline, and a positioning piece is arranged on the outer side of the other end of the rotary rod.
Further, the front end of the positioning piece is of a conical structure, two filtering pieces are arranged on the outer side of the positioning piece, the diameters of filtering holes on the two filtering pieces are different, the filtering hole diameter of the filtering piece positioned at the front end of the positioning piece is larger than that of the filtering piece positioned at the rear end of the positioning piece, a plurality of evenly distributed rotating shafts are arranged on the side surfaces of the two filtering pieces, return springs are arranged on the rotating shafts, supporting plates are arranged on the side surfaces of the filtering pieces through the rotating shafts, and two positioning plates are arranged on the top of one side of the sewage treatment box body.
Further, the side end of the locating plate is rotationally connected with the outer side of the locating piece, a spring is installed on the inner side of the locating plate, a movable cleaning scraping plate is installed on the inner end of the locating plate through the spring, the movable cleaning scraping plate is of an inclined structure, the bottom of the movable cleaning scraping plate is slidably installed on one side of the top of the sewage treatment box body, the edge of one side of the movable cleaning scraping plate is of an inclined structure, and one side of the movable cleaning scraping plate is slidably installed on the outer side of the filtering piece.
Further, a collecting cover is arranged at the top of the sewage treatment box body, the collecting cover is positioned above the aeration pipe, a medicine storage box is further arranged at the top of the sewage treatment box body, coagulant aids are stored in the medicine storage box, a plurality of medicine outlet holes which are uniformly distributed are formed in the bottom of the medicine storage box, a locating frame is arranged at the bottom of the medicine storage box, and a movable plate is arranged in the locating frame in a reciprocating sliding mode.
Further, the movable plate is of an L-shaped structure, a plurality of medicine outlet holes which are uniformly distributed are formed in the bottom of the movable plate, the side face of the movable plate is slidably arranged on the side face of the medicine storage box, a positioning groove is formed in the middle of the side face of the movable plate, a transmission rod penetrates through the side face of the collecting cover and rotates, and fan blades are arranged on the position, located inside the collecting cover, of the transmission rod.
Furthermore, the transmission rod is of a cylindrical structure, the side end of the transmission rod penetrates through the positioning groove and is arranged on the side face of the medicine storage tank, the rotary plate is arranged on the outer side of the side end of the transmission rod, and the rotary plate is rotatably arranged in the positioning groove.
Further, three mounting grooves are formed in the third step of the bottom of the inner side of the sewage treatment box body, rotary pieces are rotatably mounted at the inner ends of the three mounting grooves, symmetrically distributed storage tanks are formed in the rotary pieces, a driving motor is mounted at the bottom of the sewage treatment box body, and the output end of the driving motor is connected with the side end of the rotary pieces through a chain group.
Further, a separating plate is arranged on the inner side of the other end of the sewage treatment box body, a water quality detector is arranged at the bottom of the inner side of the separating plate, a drainage pipeline is arranged on the other end of the sewage treatment box body, and the inner end of the drainage pipeline is positioned on the inner side of the separating plate.
Further, a water pump is arranged on the outer side of the sewage treatment box body, an absorption pipe is arranged at the input end of the water pump, a return pipe is arranged at the output end of the water pump, the absorption pipe is arranged on the side surface of the sewage treatment box body, the inner end of the absorption pipe is positioned on the inner side of the separation plate, the return pipe penetrates through the side surface of the sewage treatment box body, and a plurality of water outlet tanks are arranged on the side surface of the inner end of the return pipe.
The invention provides an energy-saving and environment-friendly sewage multistage advanced treatment device, which has the following beneficial effects:
When in use, the invention converts the metal salt medicament in the medicament storage tank into water mist through the atomizing pump, and the water mist is driven by the air flow generated by the air pump to be uniformly distributed in the aeration pipe, so that the medicament water mist can directly reach the bottom of the sewage, fully contact with substances in the sewage and quickly generate chemical reaction, compared with the traditional administration mode, the problem of insufficient reaction caused by long-time stay of the medicament on the surface of the sewage is effectively avoided, the reaction efficiency of the reagent and pollutants in sewage is remarkably improved, the sewage treatment effect is enhanced, and the airflow carries the reagent water mist to flow out through the aeration pipe, so that the aeration range can cover a wider sewage area, the airflow drives the water mist to flow rapidly, the reaction speed is accelerated, large-area sewage can be treated in a short time, the sewage treatment period is greatly shortened, and the overall efficiency of sewage treatment is improved.
In addition, the diameter of the inner end of the water inlet pipeline is narrowed to increase the water flow pressure, sufficient power is provided for the operation of subsequent filtering work, and two filtering pieces are provided with different apertures and can be subjected to grading treatment according to the size of impurities, so that the accuracy and comprehensiveness of sewage filtering are effectively improved, the impurities with different particle diameters are ensured to be effectively intercepted, and the quality of sewage filtering is obviously improved.
The rotation of the filtering piece is completely driven by the power of sewage flow, no additional electric equipment is needed for providing power, the consumption of electric power resources is greatly reduced, the running cost of sewage treatment is reduced, the concept of sustainable development is met, and obvious economic benefit and environmental benefit are achieved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.
In the drawings:
FIG. 1 shows a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram showing a sectional structure of a sewage treatment tank of the present invention;
FIG. 3 shows a schematic perspective view of the movable cleaning blade of the present invention;
FIG. 4 shows a schematic perspective view of a filter element of the present invention;
FIG. 5 shows a schematic perspective view of a header of the present invention;
fig. 6 shows a schematic perspective view of an aeration tube according to the present invention;
FIG. 7 shows a schematic cross-sectional view of the collection hood of the present invention;
fig. 8 shows a schematic perspective view of the return tube of the present invention;
fig. 9 shows a schematic cross-sectional structure of the rotary member of the present invention.
List of reference numerals
1. The sewage treatment device comprises a sewage treatment box body, 101, a water inlet pipeline, 102, a rotating rod, 103, a guide plate, 104, a positioning piece, 105, a filtering piece, 106, a supporting plate, 107, a positioning plate and 108, and a movable cleaning scraping plate;
2. Aeration pipe, 201, air inlet pipe, 202, conveying pipe, 203, collecting pipe, 204, medicine storage tank, 205, water mist guide pipe, 206, air flow pipe, 207, collecting cover, 208, medicine storage tank, 209, locating rack, 2010, movable plate, 2011, locating slot, 2012, transmission rod, 2013, rotating plate;
3. Mounting groove 301, rotating piece 302, storage tank 303, separating plate 304, drainage pipeline 305, absorption pipe 306, return pipe 307 and water outlet groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Please refer to fig. 1 to 9:
The invention provides an energy-saving and environment-friendly sewage multistage advanced treatment device, which comprises a sewage treatment box body 1, wherein the bottom of the sewage treatment box body 1 is distributed in a ladder shape and is divided into a first ladder, a second ladder and a third ladder, and a water inlet pipeline 101 is arranged at the top of one end of the sewage treatment box body 1; the outer end of the water inlet pipeline 101 is provided with a flange, the diameter of the inner end of the water inlet pipeline 101 is narrowed, and the inner end of the water inlet pipeline 101 faces the inner bottom of the sewage treatment box body 1; the sewage treatment box body 1 is internally and rotatably provided with a rotating rod 102 at one end, the rotating rod 102 is of a cylindrical structure, the outer side of one end of the rotating rod 102 is provided with guide plates 103 which are uniformly distributed, the guide plates 103 are rotatably arranged below the inner end of a water inlet pipeline 101, the outer side of the other end of the rotating rod 102 is provided with positioning pieces 104, the front end of each positioning piece 104 is of a conical structure, the outer sides of the positioning pieces 104 are provided with two treatment filter pieces 105, wherein the diameter of filter holes on the two treatment filter pieces 105 is different, the filter pore diameter of the filter piece 105 at the front end of each positioning piece 104 is larger than that of the filter piece 105 at the rear end, the side surfaces of each two treatment filter pieces 105 are provided with rotating shafts which are uniformly distributed, return springs are arranged on the rotating shafts, the side surfaces of each filter piece 105 are provided with supporting plates 106 through the rotating shafts, the top of one side of the sewage treatment box body 1 is provided with two treatment positioning plates 107, the side ends of each positioning plates 107 are rotatably connected with the outer sides of the positioning pieces 104, the inner sides of the positioning plates 107 are provided with springs, the inner ends of the positioning plates 107 are provided with movable cleaning scrapers 108 through the springs, the movable cleaning scrapers 108 are of the movable cleaning scrapers 108, the movable scrapers 108 are of the movable cleaning scrapers are of the movable scrapers 1, the movable cleaning scrapers are arranged at the bottom and are arranged at the top sides of the top of the movable cleaning box body 1, and are arranged on the side of the movable cleaning box body, and at the top side of the movable cleaning scraper is in a sliding structure, and one side of the movable cleaning blade 108 is slidably mounted on the outside of the filter element 105.
In the embodiment of the invention, when sewage is treated, the sewage flows into the sewage treatment box body 1 through the water inlet pipeline 101, the diameter of the inner end of the water inlet pipeline 101 is narrowed, the water flow pressure of the inner end of the water inlet pipeline 101 is increased, the sewage flow force pushes the guide plate 103 of one section of the rotating rod 102 to rotate, the guide plate 103 drives the rotating rod 102 and the positioning piece 104 to rotate at the inner side of the sewage treatment box body 1, the positioning piece 104 drives the two filter pieces 105 to simultaneously rotate, the filter apertures on the two filter pieces 105 treat impurities with different sizes, the filter pieces 105 rotate and then drive the supporting plate 106 to rotate, the filter pieces 105 and the supporting plate 106 drive the filtered impurities to rotate upwards, the supporting plate 106 reduces the dropping problem of the adhered impurities, when the supporting plate 106 rotates to one side of the movable cleaning scraping plate 108, the side of the movable scraping plate 106 is attached to the side of the filter piece 105, the inclined structure of the movable cleaning plate 108 drives the inner side of the movable scraping plate 108 to simultaneously rotate, the movable scraping plate 108 moves to the movable scraping plate 108 to the inner side of the movable scraping plate 108, the movable scraping plate 106 rotates to enable the filtered impurities to continuously move to the position of the supporting plate 106 to rotate, the movable scraping plate 105 is continuously, the power is reduced, the power is continuously filtered to continuously clean the filtered impurities is continuously removed, and the filter is continuously moved to the filter 105 is moved due to the movement of the movable scraping plate 105 is continuously, and the filter resources is continuously removed due to the movement of the filter effect is continuously is reduced, and the filter resources are continuously removed, and the filter resources are continuously is continuously removed, and the filter is continuously filtered and the filter is continuously filtered and has the filter resources are continuously filtered.
In the second embodiment, on the basis of the first embodiment, an aeration pipe 2 is installed at a second step of the bottom of the inner side of the sewage treatment tank 1; the top of the aeration pipe 2 is provided with aeration holes, and the bottom of the aeration pipe 2 is provided with a plurality of air inlet pipes 201; a conveying pipe 202 is arranged at the bottom of the air inlet pipe 201; the middle position of the conveying pipe 202 is provided with a collecting pipe 203, one side of the bottom of the sewage treatment tank 1 is provided with a medicament storage tank 204, the inside of the medicament storage tank 204 is provided with a liquid metal salt medicament, the other side of the bottom of the sewage treatment tank 1 is provided with an air pump, the output end of the air pump is provided with an air flow pipe 206, the side surface of the medicament storage tank 204 is provided with an atomizing pump, the output end of the atomizing pump is provided with a water mist guide pipe 205, wherein a counter-flow valve is arranged on the water mist guide pipe 205, the water mist guide pipe 205 and the side end of the air flow pipe 206 are arranged inside the collecting pipe 203 together, the top of the sewage treatment tank 1 is provided with a collecting cover 207, wherein the collecting cover 207 is arranged above the aeration pipe 2, the top of the sewage treatment tank 1 is also provided with a medicament storage tank 208, the inside of the medicament storage tank 208 is provided with a coagulant aid, the bottom of the medicament storage tank 208 is provided with a plurality of uniformly distributed medicament outlet holes, the bottom of the medicament storage tank 208 is provided with a positioning rack 209, the inside of the positioning rack 209 is provided with a movable plate 2010 in a reciprocating sliding manner, the movable plate 2010 is in an L-shaped structure, the bottom of the movable plate 2010 is provided with a counter-flow valve, the movable plate 2010 is uniformly provided with a plurality of medicament outlet holes, the bottom 2010 is uniformly distributed on the side surface of the movable plate 2010 is provided with a plurality of blades 2010, the flat blades are uniformly distributed on the side surface of the movable plate 2012 is provided with a plurality of blades, the movable plate 2010 is provided with a positioning rods, the movable rod is arranged on the side of the movable rod is 2012 is arranged on the positioning rods, and the movable rod is arranged on the travelling rod, and the travelling rod is a travelling rod, and the travelling rod is by a travelling device, and the travelling device is travelling and the travelling device is travelling and has a travelling and the travelling device is travelling and the travelling and has a travelling device is travelling and has a travelling and travelling a travelling and has a travelling a travelling pump is a, the side end of the transmission rod 2012 penetrates through the positioning groove 2011 to be mounted on the side surface of the medicine storage tank 208, and the rotating plate 2013 is mounted outside the side end of the transmission rod 2012; when the rotating plate 2013 is rotatably arranged in the positioning groove 2011 and is used for treating sewage, the atomizing pump at the side surface of the medicine storage tank 204 works, so that water mist is formed by the metal salt medicine in the medicine storage tank 204 after passing through the atomizing pump and flows through the water mist guide pipe 205, meanwhile, air flow generated by the air pump at the bottom of the sewage treatment tank 1 flows through the air flow pipe 206, the medicine water mist flowing out of the water mist guide pipe 205 and the air flow flowing out of the air flow pipe 206 flow together in the manifold 203, then the air flow carries the water mist to be shunted to each air inlet pipe 201 through the conveying pipe 202 and then enters the aeration pipe 2, the air flow and the medicine water mist flow into the sewage through the aeration holes on the aeration pipe 2, the water mist flows upwards under the driving of the air flow, the medicine water mist reacts with substances in the sewage at the bottom of the sewage, and the aeration coverage is larger, the speed is faster, the chemical reaction treatment of sewage is greatly improved, the harmful substances in the sewage form colloid to flow, after the airflow generated by aeration flows upwards, most of the airflow is collected in the collecting cover 207, the odor filtering module at the top of the collecting cover 207 is discharged after the odor is treated, the upward flowing airflow drives the fan blades on the transmission rod 2012 to rotate, the fan blades drive the transmission rod 2012 to rotate, the transmission rod 2012 drives the rotating plate 2013 at the side end to rotate in the positioning groove 2011, the far end point of the rotating plate 2013 pushes one side of the positioning groove 2011 to move, the bottom of the movable plate 2010 moves in the inner side of the positioning frame 209, the movable plate 2010 moves reciprocally when the rotating plate 2013 continuously rotates, when the medicine outlet hole at the bottom of the movable plate 2010 coincides with the medicine outlet hole at the bottom of the medicine storage tank 208, the coagulant aid in the medicine storage tank 208 is sprayed into sewage to perform coagulant aid treatment on the sediment of the sewage, so that the sediment of the sewage is quickly precipitated at the third step at the bottom of the inner side of the sewage treatment tank 1, and the sewage treatment speed is greatly improved.
In the third embodiment, on the basis of the first embodiment, three installation grooves 3 are formed in the third step of the inner bottom of the sewage treatment box body 1; the inner ends of the three mounting grooves 3 are rotatably provided with rotating pieces 301; the rotary piece 301 is provided with symmetrically distributed storage tanks 302; the bottom of the sewage treatment box body 1 is provided with a driving motor, the output end of the driving motor is connected with the side end of the rotating member 301 through a chain group, the inner side of the other end of the sewage treatment box body 1 is provided with a separation plate 303, wherein the inner side bottom of the separation plate 303 is provided with a water quality detector, the other end of the sewage treatment box body 1 is provided with a drainage pipeline 304, the inner end of the drainage pipeline 304 is arranged on the inner side of the separation plate 303, the outer side of the sewage treatment box body 1 is provided with a water pump, the input end of the water pump is provided with an absorption pipe 305, the output end of the water pump is provided with a return pipe 306, the absorption pipe 305 is arranged on the side surface of the sewage treatment box body 1, the inner end of the absorption pipe 305 is positioned on the inner side of the separation plate 303, the return pipe 306 penetrates through the side surface of the sewage treatment box body 1, the inner end side surface of the return pipe 306 is provided with a plurality of treatment water outlet tanks 307, when sewage is treated, the treated by the sediment of the sewage is gathered on the inner side of the third section of the inner side of the sewage treatment box body 1, the treated sewage after flowing through the separation plate 303, the inner side of the separation plate 303 is detected by the inner side of the sewage, the detector on the inner side of the separation plate 1 is in the sewage treatment box, the sewage is in the inner side, the sewage is in the water, the water tank, the side, the absorption pipe is detected when the sewage is in the sewage is treated, and the sewage is discharged by the sewage, and the sewage is in the inner side, and the side of the separation plate, and the side tank, and the inner side tank is in the side at the side, and the inner side tank side, and is in the inner side, and is after the inner side, and is treated side, and the inner side water tank side water tank and is respectively, and is after water tank side water tank, and the water tank and is respectively, and the water tank and is and after water tank and is and the water tank and is and after water tank and is and after water and is and the water tank and is and after the water and is and the water and is and is and after the water and is and is and a water and is and a and is and a and is and is and, the driving motor at the bottom of the sewage treatment box body 1 drives three rotating parts 301 to rotate in the installation groove 3 through the chain group, the rotating parts 301 drive a storage tank 302 for storing sediment to rotate to the bottom for discharging, the condition that the sediment is salvaged and is turbid is reduced, and the flow quantity of sewage treatment is reduced, which is influenced by sediment accumulation at the bottom of the sewage treatment device.
The working principle of the embodiment is as follows: sewage flows into the sewage treatment box body 1 through the water inlet pipeline 101, the sewage flows downwards to push the guide plate 103 to drive the rotary rod 102 and the positioning piece 104 to rotate at the inner side of the sewage treatment box body 1, the positioning piece 104 drives the two filtering pieces 105 to rotate, the filtering apertures on the two filtering pieces 105 treat impurities with different sizes, the filtering pieces 105 drive the supporting plate 106 to enable the filtered impurities to rotate upwards, one side of the movable cleaning scraping plate 108 is stuck to the side surface of the filtering piece 105 to scrape and clean under the action of the spring, the supporting plate 106 rotates to one side of the movable cleaning scraping plate 108 to push the inclined structure at one side of the movable cleaning scraping plate 108 to drive the movable cleaning scraping plate 108 to move, one side of the supporting plate 106 sliding over the movable cleaning scraping plate 108 is restored to the original position under the action of the reset spring, the filtering piece 105 drives the supporting plate 106 to rotate continuously for sewage filtering treatment, the filtered sewage flows at the second stage of the inner side of the sewage treatment box body 1, metal salt medicament in the medicament storage box 204 forms water mist to flow through the water mist guide pipe 205 after passing through the atomizing pump, meanwhile, air flow generated by the air pump at the bottom of the sewage treatment box body 1 flows through the air flow pipe 206, medicament water mist flowing out of the water mist guide pipe 205 and air flow flowing out of the air flow pipe 206 flow simultaneously in the collecting pipe 203, the air flow carries water mist to be shunted to each air inlet pipe 201 through the conveying pipe 202 and then enters the aeration pipe 2 to flow into the sewage through the aeration holes on the aeration pipe 2, the water mist flows upwards to react with the sewage under the driving of the air flow, the collecting cover 207 collects most of the air flow flowing upwards through the aeration, the air flow blows the fan blade to drive the transmission rod 2012 to rotate, the transmission rod 2012 drives the far end point of the rotating plate 2013 to push one side of the positioning groove 2011, the bottom of the movable plate 2010 moves at the inner side of the positioning frame 209, when the rotating plate 2013 continuously rotates, the movable plate 2010 moves reciprocally, the medicine outlet hole at the bottom of the movable plate 2010 is overlapped with the medicine outlet hole at the bottom of the medicine storage tank 208, the coagulant aid in the medicine storage tank 208 is sprayed into sewage to perform coagulant aid treatment, the sewage sediment is quickly deposited at the third step at the bottom of the inner side of the sewage treatment tank 1, the treated sewage flows to the inner side of the separating plate 303 after passing through the separating plate 303, when the water quality detector at the inner side of the separating plate 303 detects that the sewage treatment accords with the discharge standard, the sewage which does not accord with the discharge standard is discharged through the drain pipeline 304 after being absorbed by the absorbing pipe 305, flows into the back pipe 306 through the water pump and is discharged to the second step through the drain tank 307 again, the sewage sediment is accumulated in the storage tank 302 at the outer side of the rotating member 301, and the storage tank 302 for storing the sediment is rotated by the driving motor through the chain group after the rotation of the three rotating members 301.
In this context, the following points need to be noted:
1. the drawings of the embodiments of the present invention relate only to the structures related to the embodiments of the present invention, and reference may be made to the general design for other structures.
2. The embodiments of the invention and the features of the embodiments can be combined with each other to give new embodiments without conflict.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.