阅读说明：本技术 一种整瓶脱标清洗一体化系统 (Whole bottle label-removing and cleaning integrated system ) 是由 欧晢文 陈克营 于 2021-09-17 设计创作，主要内容包括：本发明涉及一种整瓶脱标清洗一体化系统,包括支撑平台,还包括依次连接脱标清洗机、分离筛、清洗液分离机以及清洗液缓冲水槽,所述脱标清洗机安装在所述支撑平台上,所述分离筛用于实现清洗水、标签、杂质与主物料的分离,所述清洗液缓冲水槽用于盛放经所述清洗液分离机净化后的清洗液。本系统通过对脱标机的全新设计,使得脱标清洗机实现脱标的过程同时实现强力清洗,并通全新设计的分离筛实现清洗水、标签、杂质与主物料的分离,清洗水经过清洗液分离机中的过滤系统使得清洗水和标签、杂质的彻底分离,实现清洗水的大流量重复循环使用。该系统通过多功能设备的开发设计和系统优化整合,大幅降低设备投资与操作使用成本。(The invention relates to an integral bottle label-removing and cleaning integrated system which comprises a supporting platform, and further comprises a label-removing cleaning machine, a separating screen, a cleaning liquid separator and a cleaning liquid buffer water tank which are sequentially connected, wherein the label-removing cleaning machine is arranged on the supporting platform, the separating screen is used for separating cleaning water, labels, impurities and main materials, and the cleaning liquid buffer water tank is used for containing cleaning liquid purified by the cleaning liquid separator. The system realizes powerful cleaning in the label removing process of the label removing cleaning machine through the brand new design of the label removing machine, realizes the separation of cleaning water, labels and impurities from main materials through a brand new designed separation sieve, and completely separates the cleaning water from the labels and the impurities through a filtering system in a cleaning liquid separator by the cleaning water, so that the large-flow repeated recycling of the cleaning water is realized. The system greatly reduces the equipment investment and the operation and use cost through the development design and the system optimization integration of the multifunctional equipment.)

1. The utility model provides a whole bottle takes off mark and washs integration system, includes supporting platform (1), its characterized in that: the label removing machine is characterized by further comprising a label removing cleaning machine (2), a separating screen (3), a cleaning liquid separator (4) and a cleaning liquid buffer water tank (5) which are sequentially connected, wherein the label removing cleaning machine (2) is installed on the supporting platform (1), the separating screen (3) is used for separating cleaning water, labels, impurities and main materials, and the cleaning liquid buffer water tank (5) is used for containing cleaning liquid purified by the cleaning liquid separator (4).

2. The integrated whole bottle label-removing and cleaning system as claimed in claim 1, wherein: the label removing and cleaning machine (2) comprises a machine base (21), a driving device (22), a roller (23) and a rotor (24), wherein a feeding hole (25) is formed in one side of the machine base (21), a discharging hole (26) is formed in the other side of the machine base, and the separating screen (3) is arranged at the bottom of the discharging hole (26);

the rotor (24) is in transmission connection with the driving device (22), the rotor (24) is arranged in the roller (23) and is coaxially arranged with the roller (23), a cleaning chamber (6) which is respectively connected with the feeding hole (25) and the discharging hole (26) is formed between the rotor (24) and the roller (23), and a scraping mechanism (7) for extruding and scraping materials is arranged in the cleaning chamber (6).

3. The integrated whole bottle label-removing and cleaning system as claimed in claim 2, wherein: the scraping mechanism (7) comprises a plurality of movable cutters (71) and a plurality of fixed cutters (72), the movable cutters (71) are detachably fixed on the outer side wall of the rotor (24), and the fixed cutters (72) are detachably fixed on the inner wall of the roller (23).

4. The integrated whole bottle label-removing and cleaning system as claimed in claim 3, wherein: a plurality of staring disks (27) are detachably and fixedly connected to the drum (23), a plurality of fixed knives (72) are detachably and fixedly fixed to the staring disks (27), and a plurality of handles (28) are fixedly connected to one surface, away from the cleaning chamber (6), of each staring disk (27).

5. The integrated whole bottle label-removing and cleaning system as claimed in claim 2, wherein: the label removing cleaning machine (2) is provided with a plurality of water injection ports (29) communicated with the cleaning chamber (6).

6. The integrated whole bottle label-removing and cleaning system as claimed in claim 1, wherein: separating screen (3) are including sloping frame (31), screening mechanism (32) and take-up (33), screening mechanism (32) are installed the upper strata of sloping frame (31) is used for screening the material, take-up (33) are installed the lower floor of sloping frame (31) is used for the discharge of label, bottle lid and impurity.

7. The integrated whole bottle label-removing and cleaning system as claimed in claim 6, wherein: screening mechanism (32) are including gear motor (321) and a plurality of bounce axle (322), gear motor (321) are installed one side of tilting frame (31) is used for the drive a plurality of bounce axle (322) are in rotate on tilting frame (31), a plurality of bounce sieve pieces (323) have evenly been arranged along its axial outside in bounce axle (322).

8. The integrated whole bottle label-removing and cleaning system as claimed in claim 7, wherein: the bouncing screen pieces (323) of two adjacent bouncing shafts (322) are arranged in a staggered mode, and a gap (8) is formed between every two adjacent bouncing screen pieces (323) on the same bouncing shaft (322).

9. The integrated whole bottle label-removing and cleaning system as claimed in claim 7, wherein: the bouncing screen sheet (323) is shaped like a Luo-Kes triangle.

10. The integrated whole bottle label-removing and cleaning system as claimed in claim 6, wherein: the bottom of the inclined frame (31) is provided with a main material outlet (311) and a slag discharge port (312), and the slag discharge port (312) is communicated with the cleaning liquid separator (4).

Technical Field

The invention relates to the technical field of plastic recycling and cleaning, in particular to an integral bottle label removing and cleaning integrated system.

Background

The plastic recovery means that a certain recovery process is adopted to recycle the waste plastic so as to realize the purpose of changing waste into valuable. At present, the waste plastics in China mainly comprise plastic films, plastic wires, woven products, foamed plastics, plastic packing cases and containers, daily plastic products, plastic bags, agricultural mulching films and the like.

The regeneration system for plastic recovery generally adopts a physical method, and the equipment comprises the procedures of sorting, raw material pretreatment, cleaning, drying, granulation and the like. The waste plastic cleaning process is very important, and the waste plastic cleaning process needs to be fully cleaned, so that residual impurities of organic matters of the cleaned material are minimized, the quality of the organic matters is infinitely close to that of raw materials, the waste plastic cleaning process has a wider field of recycling, and the quality safety of subsequent plastic products can be ensured.

In the prior art, for example, chinese patent publication No. CN209191070U discloses a label-removing machine label-leakage collecting device, which includes a label-blowing channel communicated with a label-removing machine and a air-leakage pipe for weakening the label-blowing airflow discharged from the label-blowing channel; the discharger is communicated with the air discharge pipe and is used for collecting the free falling labels; and a conveying device communicated with the outlet of the discharger and used for guiding out the collected labels.

The above prior art solutions have the following drawbacks: the whole system is complex in structure, the plastic bottles need to be cleaned after label removal, time and labor are wasted, the cleaning efficiency is reduced, and the equipment investment and the use operation cost are high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an integral bottle label-removing and cleaning integrated system, which combines a plurality of original independent functional devices to realize functions, reduces the use of the devices, saves time and labor, improves the cleaning efficiency, greatly reduces the device investment and the operation and use cost and realizes the improvement of the cleaning performance through the development design and the system optimization integration of the multifunctional devices.

The above object of the present invention is achieved by the following technical solutions:

the whole bottle label-removing and cleaning integrated system comprises a supporting platform, and further comprises a label-removing cleaning machine, a separating sieve, a cleaning liquid separator and a cleaning liquid buffer water tank which are sequentially connected, wherein the label-removing cleaning machine is installed on the supporting platform, the separating sieve is used for separating cleaning water, labels, impurities and main materials, and the cleaning liquid buffer water tank is used for containing cleaning liquid purified by the cleaning liquid separator.

The present invention in a preferred example may be further configured to: the label removing and cleaning machine comprises a machine base, a driving device, a roller and a rotor, wherein a feed port is formed in one side of the machine base, a discharge port is formed in the other side of the machine base, and the separating screen is arranged at the bottom of the discharge port;

the rotor with the drive arrangement transmission is connected, the rotor set up in the inside of cylinder and with the cylinder coaxial setting, the rotor with form between the cylinder respectively with the feed inlet with the washing cavity that the discharge gate is connected, be provided with in the washing cavity and be used for forming the mechanism of scraping of extrusion and scraping to the material.

The present invention in a preferred example may be further configured to: the scraping mechanism comprises a plurality of movable cutters and a plurality of fixed cutters, the movable cutters are detachably fixed on the outer side wall of the rotor, and the fixed cutters are detachably fixed on the inner wall of the roller.

The present invention in a preferred example may be further configured to: the rotary drum is detachably and fixedly connected with a plurality of staring discs, the fixed knives are detachably and fixedly fixed on the staring discs, and one surface of each staring disc, which is far away from the cleaning cavity, is fixedly connected with a plurality of handles.

The present invention in a preferred example may be further configured to: and a plurality of water injection ports communicated with the cleaning cavity are formed in the label removing cleaning machine.

The present invention in a preferred example may be further configured to: the separating screen comprises an inclined frame, a screening mechanism and a material receiving disc, wherein the screening mechanism is installed on the upper layer of the inclined frame and used for screening materials, and the material receiving disc is installed on the lower layer of the inclined frame and used for discharging labels, bottle caps and impurities.

The present invention in a preferred example may be further configured to: screening mechanism includes gear motor and a plurality of bounce axle, gear motor installs one side of tilting rack is used for driving a plurality ofly the bounce axle is in rotate on the tilting rack, a plurality of bounce sieve pieces of evenly having arranged along its axial outside are beaten to the bounce axle.

The present invention in a preferred example may be further configured to: the bouncing screen pieces of two adjacent bouncing shafts are arranged in a staggered manner, and a gap is formed between every two adjacent bouncing screen pieces on the same bouncing shaft.

The present invention in a preferred example may be further configured to: the shape of the bouncing screen sheet is a Luo-Ke triangle.

The present invention in a preferred example may be further configured to: the bottom of the inclined frame is provided with a main material outlet and a slag discharge port, and the slag discharge port is communicated with the cleaning liquid separator.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the system realizes powerful cleaning in the label removing process of the label removing cleaning machine through the brand new design of the label removing machine, realizes the separation of cleaning water, labels and impurities from main materials through a brand new designed separation sieve, and completely separates the cleaning water from the labels and the impurities through a filtering system in a cleaning liquid separator by the cleaning water, so that the large-flow repeated recycling of the cleaning water is realized. The system design combines a plurality of original independent functional devices to realize functions, reduces the use of the devices through the development design and the system optimization integration of the multifunctional devices, greatly reduces the equipment investment and the operation and use cost, and realizes the improvement of the cleaning performance.

2. In the material got into the washing cavity in the cylinder from the feed inlet, drive arrangement drove the rotor and rotates, moved the sword through the angle that takes on the rotor, and the waste plastic bottle is in a plurality of stationary knives on the cylinder inner wall and a plurality of on the rotor lateral wall move the sword between the friction repeatedly, can peel off the label from the bottle through abundant friction. The movable cutter is arranged on the outer side wall of the rotor in a spiral sequence and can also push waste plastic bottles to be conveyed to the discharge port, and the bottles are squeezed and scraped by the fixed cutter in the pushing process of the movable cutter to peel off labels until the labels are discharged from the discharge port.

3. The speed reduction motor drives the plurality of bouncing shafts to rotate through the chain, the bouncing shafts drive the plurality of bouncing sieve sheets to rotate, when materials (cleaned bottles comprising bottles, labels, water and bottle caps and other impurities) contact the rotating bouncing sieve sheets, the bottles are smooth in surface and small in contact area due to large weight and size, and can be bounced by the bouncing sieve sheets and only bounce along one side of the sieve face, which is lower, and the bouncing sieve sheets can bounce and slide along the other side. The label is too light and cannot be bounced due to the flexibility of the label, the weight is small, and the contact surface area is large, so that the label is driven to one side far away from the bottle along the bouncing screen sheet. Other impurities, water and small materials with the same volume as the bottle cap fall down from a gap between two adjacent bouncing sieve sheets, are collected in a water receiving tray at the lower layer in a centralized way, and flow to the filtering equipment in the cleaning liquid separator by water flow through a pipeline. Wherein, the setting of apron can effectually avoid the bottle to pop out from the separation sieve, has improved the practicality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic structural view showing a label removing and cleaning machine according to the present invention.

Fig. 3 is a cross-sectional view of the present invention showing a label removal cleaning machine.

Fig. 4 is a schematic structural view showing a rotor according to the present invention.

Fig. 5 is a schematic structural view of the moving blade of the present invention.

Fig. 6 is a schematic plan view showing the staring disk of the present invention.

Fig. 7 is a side view of the present invention showing the staring disk.

Fig. 8 is a schematic diagram showing the structure of a separating screen according to the present invention.

Fig. 9 is a schematic structural view showing the bounce shaft according to the present invention.

Fig. 10 is a schematic plan view showing a bouncing screen sheet according to the present invention.

Reference numerals: 1. a support platform; 2. a label removing and cleaning machine; 21. a machine base; 211. a left base; 212. a right frame; 213. a base; 214. an access hole; 22. a drive device; 23. a drum; 24. a rotor; 25. a feed inlet; 26. a discharge port; 27. staring at the disk; 28. a handle; 29. a water injection port; 3. separating and screening; 31. an inclined frame; 311. a main material outlet; 312. a slag discharge port; 32. a screening mechanism; 321. a reduction motor; 322. a bounce shaft; 323. a bounce screen sheet; 324. a cover plate; 33. a take-up pan; 4. a cleaning liquid separator; 5. a cleaning liquid buffer water tank; 6. cleaning the chamber; 7. a scraping mechanism; 71. moving a knife; 711. mounting a plate; 712. a friction plate; 72. fixing a cutter; 8. a gap.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the whole bottle label-removing and cleaning integrated system disclosed by the invention comprises a supporting platform 1, and further comprises a label-removing cleaning machine 2, a separating screen 3, a cleaning liquid separator 4 and a cleaning liquid buffer water tank 5 which are sequentially connected, wherein the label-removing cleaning machine 2 is installed on the supporting platform 1, the separating screen 3 is used for separating cleaning water, labels, impurities and main materials, and the cleaning liquid buffer water tank 5 is used for containing the cleaning liquid purified by the cleaning liquid separator 4.

The label-removing cleaning machine 2 comprises a machine base 21, a driving device 22, a roller 23 and a rotor 24, wherein a feeding hole 25 is formed in one side of the machine base 21, a discharging hole 26 is formed in the other side of the machine base 21, and the separating screen 3 is arranged at the bottom of the discharging hole 26. The rotor 24 is in transmission connection with the driving device 22, the rotor 24 is arranged inside the roller 23 and is coaxially arranged with the roller 23, a cleaning chamber 6 connected with the feeding hole 25 and the discharging hole 26 is formed between the rotor 24 and the roller 23, and a scraping mechanism 7 for extruding and scraping materials is arranged in the cleaning chamber 6.

During cleaning, the whole bottle of material enters the cleaning chamber 6 through the feed inlet 25, the driving device 22 acts and drives the rotor 24 to rotate inside the roller 23, and the material is separated from the bottle under the action of the scraping mechanism 7 in the cleaning chamber 6. Meanwhile, materials are mixed with cleaning liquid and enter a cleaning chamber 6 when entering a label removing cleaning machine 2, strong cleaning of the materials is completed while label removing is completed, the materials after label removing cleaning are mixed with the cleaning liquid and enter a separating screen 3 from a discharge port 26, the separation of the cleaning liquid, labels and impurities from main materials is completed through the machine, the main materials after label removing cleaning enter a subsequent process link for further processing, the cleaning liquid enters a cleaning liquid separator 4, the labels, the impurities and the cleaning mixed in the main materials are thoroughly separated and purified, and the main materials are buffered by a cleaning liquid buffer tank 5 and then recycled.

The base 21 includes a left base 211 and a right base 212 fixed on a base 213, the drum 23 and the rotor 24 are installed between the left base 211 and the right base 212, the driving device 22 is configured as a motor in this embodiment and detachably fixed on the base 213 on one side of the left base 211, and the motor drives the rotor 24 to rotate in the drum 23 through a belt. All be provided with access hole 214 on left frame 211 and the right frame 212, feed inlet 25 sets up on left frame 211 and the opening is upwards, and discharge gate 26 sets up bottom and the opening of right frame 212 downwards, and the belt cover is installed in the outside of belt, the effectual security that has promoted whole equipment.

The scraping mechanism 7 includes a plurality of movable blades 71 and a plurality of fixed blades 72, the plurality of movable blades 71 are detachably fixed on the outer side wall of the rotor 24, and the plurality of fixed blades 72 are detachably fixed on the inner wall of the drum 23. The material enters the cleaning chamber 6 in the roller 23 from the feed inlet 25, the driving device 22 drives the rotor 24 to rotate, the waste plastic bottles are repeatedly rubbed between the plurality of fixed knives 72 on the inner wall of the roller 23 and the plurality of movable knives 71 on the outer side wall of the rotor 24 through the movable knives 71 with angles on the rotor 24, and the labels can be peeled from the bottles through sufficient friction. The movable cutter 71 is arranged on the outer side wall of the rotor 24 in a spiral sequence, waste plastic bottles can be pushed to be conveyed to the discharge port 26, and the labels are peeled off by the contact between the movable cutter 71 and the fixed cutter 72 in the conveying and pushing process of the bottles until the bottles are discharged from the discharge port 26.

The movable knife 71 comprises a mounting plate 711 and a friction plate 712 vertically fixed on the mounting plate 711, in the embodiment, the mounting plate 711 is detachably fixed on the outer side wall of the rotor 24 through a plurality of bolts, and one surface of the friction plate 712, which is far away from the mounting plate 711, is in an inclined step shape, so that the scraping force of the movable knife 71 can be greatly enhanced, and the label on the waste plastic bottle can be effectively scraped. Seen from the cross section of the rotor 24, the arrangement sequence of the friction plates 712 on the outer side wall of the rotor 24 is the same along the anticlockwise or clockwise spiral direction, and when the rotor rotates, the design can better scrape the label on the waste plastic bottle, so that the practicability is improved.

A plurality of staring disks 27 are detachably and fixedly connected to the drum 23, a plurality of fixed knives 72 are detachably and fixedly connected to the staring disks 27, and a plurality of handles 28 are fixedly connected to one surface of each staring disk 27 away from the washing chamber 6. The plurality of fixed cutters 72 are detachably fixed on the staring disc 27 through bolts, the staring disc 27 is detachably fixed on the drum 23 through bolts, when the fixed cutter 72 at a certain position is worn and damaged, the staring disc 27 at the position can be detached, and then the damaged fixed cutter 72 is replaced, so that the fixed cutter is convenient to detach and maintain.

The arrangement of the handle 28 facilitates the detachment of the staring disk 27 from the drum 23, thereby improving the practicability. Wherein, the shape of each stationary knife 72 is the circular shape protruding cambered surface, and the intermediate position department fixedly connected with of protruding cambered surface is the tool bit of rectangle, so set up the frictional force that has improved between waste plastic bottle and the tool bit and the extrusion force between the material to strip off the label from waste plastic bottle more effectively.

Take off and be provided with a plurality of water filling ports 29 with the washing chamber 6 intercommunication on the washing machine 2, the setting of a plurality of water filling ports 29 is convenient for add the washing liquid in washing chamber 6 to realize accomplishing the powerful washing of material when taking off the mark, and the washing liquid can further promote the effect of getting rid of the label. Add the washing liquid and can reduce the degree of difficulty of scraping the label in washing cavity 6, simultaneously through the high-speed rotation of 24 cylinders 23 of rotor, increased the ability of washing, can obtain effectual washing with impurity such as bottle and label, increase the cleanliness factor of material.

The separating screen 3 comprises an inclined frame 31, a screening mechanism 32 and a receiving disc 33, wherein the screening mechanism 32 is arranged on the upper layer of the inclined frame 31 and used for screening materials, and the receiving disc 33 is arranged on the lower layer of the inclined frame 31 and used for discharging labels, bottle caps and impurities. The material after removing the label falls on the screening mechanism 32 through the discharge hole 26, the screening mechanism 32 can separate the cleaning water, the label, the impurities and the main material, the main material after removing the label and cleaning enters the subsequent process links for further processing, and the cleaning water, the label and the impurities fall into the receiving tray 33 under the screening effect of the screening mechanism 32.

The screening mechanism 32 comprises a speed reducing motor 321 and a plurality of bouncing shafts 322, the speed reducing motor 321 is installed on one side of the tilting frame 31 and used for driving the bouncing shafts 322 to rotate on the tilting frame 31, a plurality of bouncing screen sheets 323 are uniformly distributed on the bouncing shafts 322 along the axial outer side of the bouncing shafts, and a cover plate 324 detachably and fixedly connected with the tilting frame 31 is arranged above the bouncing screen sheets 323. The bouncing screen pieces 323 of two adjacent bouncing shafts 322 are arranged in a staggered manner, and a gap 8 is arranged between two adjacent bouncing screen pieces 323 on the same bouncing shaft 322.

The separating screen 3 is designed into an upper layer and a lower layer, the upper layer is formed by combining bouncing screen pieces 323 which vibrate and bounce and is driven by a speed reducing motor 321, the lower layer main body is a steel structure and a water receiving disc, and the upper layer and the lower layer are connected by a pin shaft.

The speed reduction motor 321 drives the plurality of bouncing shafts 322 to rotate through the chain, the bouncing shafts 322 drive the plurality of bouncing screen pieces 323 to rotate, when materials (cleaned bottles comprising bottles, labels, water and bottle caps and other impurities) contact the rotating bouncing screen pieces 323, the bottles can be bounced by the bouncing screen pieces 323 due to large weight and volume, smooth surface and small contact area, and can bounce along the lower side of the screen surface and slide down while bouncing.

The label is too light and cannot be bounced due to the flexibility of the label, the weight is small, and the contact surface area is large, so that the label is driven to the side far away from the bottle along the bouncing screen 323. Other impurities, water and small materials with the same volume as the bottle cap fall down from the gap 8 between the two adjacent bouncing sieve sheets 323, are collected in the water receiving tray at the lower layer in a centralized way, and flow to the filtering equipment in the cleaning liquid separator 4 by water flow through a pipeline. Wherein, the setting of apron 324 can effectually avoid the bottle to pop out from separating screen 3, has improved the practicality.

The bottom of the inclined frame 31 is provided with a main material outlet 311 and a slag discharge port 312, and the slag discharge port 312 is communicated with the cleaning liquid separator 4. Small materials with the same volume of the label, water and the bottle cap are discharged from the slag discharge port 312 and flow to the filtering equipment in the cleaning solution separator 4 by water flow through the pipeline. The main material between the cover plate 324 and the separating screen 3 is discharged from the main material outlet 311 under the action of gravity, and the main material after label removing and cleaning enters the subsequent process links for further treatment.

In this embodiment, the shape of the bouncing screen sheet 323 is a reuleaux triangle, which is also called a reuleaux triangle, or a circular triangle, and is a special triangle, in which the vertex of a regular triangle is used as the center of a circle, and the side length of the regular triangle is used as a radius to form a circular arc, and a curved triangle formed by the three circular arcs is called a reuleaux triangle. The Lurocks triangle is characterized by: having the same width in any direction, i.e. free to rotate between two parallel lines at a distance equal to its arc radius a (equal to the side length of the regular triangle) and always remaining in contact with both straight lines. The machining industry has taken advantage of the fact that square holes can be drilled in parts by shaping the cross-section of the drill into the shape of a reuleaux triangle, a property that has been discovered by reuleaux when studying the mechanical classification.

The implementation principle of the embodiment is as follows: the system realizes powerful cleaning in the label removing process of the label removing cleaning machine 2 through brand new design of the label removing machine, realizes separation of cleaning water, labels and impurities from main materials through the brand new design of the separating screen 3, and completely separates the cleaning water from the labels and the impurities through a filtering system in the cleaning liquid separator 4, so that large-flow repeated recycling of the cleaning water is realized. The system design combines a plurality of original independent functional devices to realize functions, reduces the use of the devices through the development design and the system optimization integration of the multifunctional devices, greatly reduces the equipment investment and the operation and use cost, and realizes the improvement of the cleaning performance.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.