Paper pulp stirring device for papermaking
Technical Field
The invention relates to the field of papermaking equipment, in particular to a paper pulp stirring device for papermaking.
Background
Paper made of plant fiber, and capable of folding arbitrarily the sheet for writing. The paper is a carrier for writing and printing, and can also be used as other applications such as packaging, sanitation and the like, such as printing paper, copying paper, toilet paper, facial tissue and the like.
When papermaking is produced, the stirring device is required to stir and mix paper pulp, so that the quality of paper production is better, when the stirring equipment of the existing pulp for papermaking is used for stirring and mixing the paper pulp, the paper pulp in the stirring barrel rotates in the same direction, so that the stirring effect of the pulp is poor, and the upper and lower part paper pulps in the stirring barrel cannot be quickly mixed, so that the quality and efficiency of stirring and mixing are affected, and the paper pulp stirring device for papermaking is provided for solving the problems.
Disclosure of Invention
Therefore, the invention provides a pulp stirring device for papermaking, which can rotate pulp in a stirring barrel in different directions, and simultaneously can enable the pulp at the upper part and the lower part in the stirring barrel to be quickly mixed, so as to solve the technical problems that when the pulp is stirred and mixed by the existing stirring equipment for pulp for papermaking production, the pulp in the stirring barrel rotates in the same direction, so that the stirring effect of the pulp is poor, and the pulp at the upper part and the lower part in the stirring barrel cannot be quickly mixed, thereby influencing the stirring and mixing quality and efficiency.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the pulp stirring device for papermaking comprises a stirring barrel, supporting feet arranged at the bottom of the stirring barrel, a feeding port arranged at one side of the stirring barrel and a discharging port arranged at the middle part of the bottom of the stirring barrel; the device comprises a stirring barrel, a multidirectional rapid mixing device and an up-down pushing device, wherein the stirring barrel is internally provided with the stirring barrel and is used for rapidly mixing and stirring paper pulp, the up-down pushing device is arranged on the outer side of the stirring barrel and is used for pushing the multidirectional rapid mixing device up and down, and the up-down pushing device is fixedly connected with the multidirectional rapid mixing device; the multidirectional rapid mixing device comprises a multidirectional stirring mechanism arranged in the stirring barrel, a multidirectional transmission mechanism arranged at the top of the multidirectional stirring mechanism and a first driving motor arranged at the top of the multidirectional transmission mechanism, and the multidirectional stirring mechanism is in transmission connection with the multidirectional transmission mechanism.
Preferably, the multidirectional stirring mechanism comprises a main stirring rod arranged at the bottom middle part of the multidirectional transmission mechanism, a first auxiliary stirring rod and a second auxiliary stirring rod arranged at two sides of the main stirring rod, a plurality of main stirring blades arranged on the main stirring rod and used for stirring, and a plurality of auxiliary stirring blades arranged on the first auxiliary stirring rod and the second auxiliary stirring rod and used for stirring, and a first auxiliary stirring blade and a second auxiliary stirring blade She Er respectively, wherein a bottom stirring blade used for stirring at the bottom of the stirring barrel is arranged at the bottom of the main stirring rod, and the first auxiliary stirring rod and the second auxiliary stirring rod are arranged at two sides of the main stirring rod.
Preferably, the multidirectional transmission mechanism comprises an outer shell, an annular gear ring arranged on the inner outer ring of the outer shell, a main gear, a first auxiliary gear and a second auxiliary gear, wherein the main gear, the first auxiliary gear and the second auxiliary gear are arranged on the middle part and two sides of the outer shell, two sides of the main gear are respectively connected with the first auxiliary gear and the second auxiliary gear in a meshed mode, the outer sides of the first auxiliary gear and the second auxiliary gear are respectively connected with the inner side teeth of the annular gear ring in a meshed mode, the first driving motor is arranged on the top middle part of the outer shell, the output end of the first driving motor is connected with the middle part of the main gear, the upper end of the main stirring rod extends into the outer shell and is connected with the output end of the first driving motor through a coupler, and the first auxiliary stirring rod and the second auxiliary stirring rod extend into the outer shell and are respectively connected with the middle part of the first auxiliary gear and the second auxiliary gear.
Preferably, the up-down pushing device comprises a mounting frame plate mounted on the outer side of the stirring barrel, a sliding pushing mechanism mounted on the upper side of the mounting frame plate, a connecting fixing plate mounted on the sliding pushing mechanism, a rotary table mounted on the lower side of the mounting frame plate in the middle of the sliding pushing mechanism in a positioning manner through a rotary table positioning rod, a pushing frame rod used for connecting the rotary table and the sliding pushing mechanism, and a driving mechanism mounted inside the lower side of the mounting frame plate, wherein the connecting fixing plate is fixedly connected with the upper end of the shell body, one end of the pushing frame rod is in eccentric rotation connection with the rotary table through a shaft rod, and the driving mechanism is in transmission connection with the rotary table positioning rod.
Preferably, the sliding pushing mechanism comprises a sliding pushing frame, a first pulley, a second pulley and a sliding groove, the sliding pushing frame is formed by combining two plate bodies arranged on two sides of a mounting plate, a plurality of first pulleys and second pulleys are arranged on two sides in the sliding pushing frame, sliding grooves are respectively formed in two sides of the mounting plate, the first pulleys and the second pulleys are respectively connected with the inner sides of the sliding grooves on two sides of the mounting plate in a sliding mode, and the other end of the pushing frame rod is connected with the middle part of the plate body of the sliding pushing frame far away from one side of the connecting and fixing plate in a rotating mode.
Preferably, the driving mechanism comprises a driving motor II installed on the lower side of the mounting frame plate, a transmission main bevel gear I, a transmission rod, a transmission auxiliary bevel gear I, a transmission auxiliary bevel gear II and a transmission main bevel gear II which are installed in the mounting frame plate, the middle part of the transmission rod is fixedly installed on the inner side of the mounting frame plate through a rod fixing bracket, the transmission auxiliary bevel gear I and the transmission auxiliary bevel gear II are respectively installed at two ends of the transmission rod, the middle part of the transmission main bevel gear I is connected with the output end of the driving motor II, the transmission main bevel gear I is connected with the transmission auxiliary bevel gear I in a meshed manner, and a turntable positioning rod arranged on the inner side of the mounting frame plate penetrates through and is connected to the middle part of the transmission main bevel gear II, and the transmission main bevel gear II is connected with the transmission auxiliary bevel gear II in a meshed manner.
Preferably, the number of the main stirring blades, the auxiliary stirring blades I and the auxiliary stirring blades II is more than two, and each main stirring blade and each auxiliary stirring blade I and each auxiliary stirring blade She Er are distributed in a staggered manner.
Preferably, the bottom stirring blade is arranged in a V-shaped structure and is matched with the bottom structure in the stirring barrel.
Preferably, the number of the first pulleys and the second pulleys is not less than two.
Preferably, the first transmission main bevel gear is vertically meshed with the first transmission auxiliary bevel gear, and the second transmission main bevel gear is vertically meshed with the second transmission auxiliary bevel gear.
By adopting the technical scheme, the invention has the beneficial effects that:
according to the invention, the multidirectional rapid mixing device is arranged, and the multidirectional transmission mechanism is driven by the first driving motor to rotate, so that the multidirectional stirring mechanism rapidly and uniformly stirs and mixes the paper pulp in the stirring barrel, and the stirring efficiency and quality of the paper pulp are greatly improved.
According to the stirring device, the multidirectional stirring mechanism is arranged, the main stirring blade on the main stirring rod, the auxiliary stirring blade I and the auxiliary stirring blade She Er on the auxiliary stirring rod I and the auxiliary stirring rod II rotate in opposite directions under the transmission of the multidirectional transmission mechanism, and the auxiliary stirring rod I and the auxiliary stirring rod II can turn round the main stirring rod, so that the uniformity of pulp mixing and stirring in the stirring barrel is greatly improved, and meanwhile, the stirring efficiency is also improved.
According to the invention, the multidirectional transmission mechanism is used for driving the first driving motor to drive the first auxiliary gear and the second auxiliary gear to rotate in different directions synchronously, and the first auxiliary gear and the second auxiliary gear are enabled to rotate around the main gear, so that rotating force is provided for the main stirring rod, the first auxiliary stirring rod and the second auxiliary stirring rod, and the efficiency of subsequent stirring work is improved conveniently.
According to the invention, the up-down pushing device is arranged, the turntable drives the pushing rack rod to push under the driving of the driving mechanism, and then the sliding pushing mechanism is driven to slide up and down to push, so that the multi-direction rapid mixing device can be driven to move up and down, and the up-down pulp in the stirring barrel can be rapidly stirred and mixed, so that the uniformity and efficiency of stirring and mixing are improved.
According to the invention, the sliding pushing mechanism is arranged, and the pulley I and the pulley II on two sides in the sliding pushing frame slide in the sliding grooves on two sides on the mounting frame plate under the pushing of the pushing frame rod, so that the multidirectional rapid mixing device is driven to be more stable in pushing up and down, the up-down linear motion is ensured, and the stirring efficiency and the stirring quality of paper pulp in the stirring barrel are improved.
According to the invention, the driving mechanism is arranged, the driving main bevel gear I and the driving auxiliary bevel gear I are meshed for transmission under the driving of the driving motor II, and the driving auxiliary bevel gear II and the driving main bevel gear II are meshed for transmission after the driving rod is used for transmission, so that the turntable is rapidly driven to rotate, the normal operation of the up-down pushing device is ensured, and the rapid stirring work is ensured after the multi-direction rapid mixing device can move up and down.
According to the invention, the plurality of main stirring blades, the plurality of auxiliary stirring blades I and the plurality of auxiliary stirring blades II are arranged, the main stirring blades, the auxiliary stirring blades I and the auxiliary stirring blades She Er are distributed in a staggered manner, and the stirring area can be increased by arranging the plurality of stirring blades and the plurality of stirring blades in a staggered manner, so that the uniformity and the efficiency of stirring paper pulp can be improved.
According to the invention, the bottom stirring blades are arranged at the bottom of the main stirring rod, and are in a V-shaped structure and matched with the inner bottom structure of the stirring barrel, so that the pulp in the inner bottom of the stirring barrel can be stirred and mixed, the overall uniformity of the pulp in the stirring barrel is improved, and the stirring efficiency is also improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a multi-directional rapid mixing device according to the present invention;
FIG. 3 is a schematic view of the multi-directional stirring mechanism of the present invention;
FIG. 4 is a schematic view of the internal planar structure of the multidirectional transmission mechanism of the present invention;
FIG. 5 is a schematic diagram of the structure of the up-down pushing device of the present invention;
FIG. 6 is a schematic diagram of the front structure of the up-down pushing device of the present invention;
FIG. 7 is a schematic view of a sliding pushing mechanism according to the present invention;
fig. 8 is a schematic diagram of the internal side structure of the driving mechanism of the present invention.
Reference numerals in the drawings: the stirring barrel-1, the supporting feet-2, the feeding opening-3, the discharging opening-4, the multi-direction rapid mixing device-5, the upper and lower pushing device-6, the multi-direction stirring mechanism-51, the multi-direction transmission mechanism-52, the driving motor-53, the main stirring rod-511, the auxiliary stirring rod-512, the auxiliary stirring rod-513, the main stirring blade-514, the auxiliary stirring blade-515, the auxiliary stirring She Er-516, the bottom stirring blade-517, the outer shell-521, the annular gear ring-522, the main gear-523, the auxiliary gear-524, the auxiliary gear-525, the mounting frame plate-61, the sliding pushing mechanism-62, the connecting fixing plate-63, the turntable-64, the turntable positioning rod-65, the pushing frame rod-66, the driving mechanism-67, the sliding pushing frame-621, the pulley-622, the pulley-623, the sliding chute-624, the driving motor-671, the driving main bevel gear-672, the driving bevel gear-673, the auxiliary bevel gear-674, the driving bevel gear-second bevel gear 677, the driving bevel gear-677 and the fixing bracket 677.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Referring to fig. 1, the present invention provides a pulp stirring device for papermaking, which comprises a stirring barrel 1, a container for containing pulp, a supporting leg 2 arranged at the bottom of the stirring barrel 1, a feeding port 3 arranged at one side of the stirring barrel 1 for placing the pulp, and a discharging port 4 arranged at the middle of the bottom of the stirring barrel 1, wherein the discharging port 4 is also provided with a switch valve for discharging the stirred pulp;
it should be noted that, the front end of the stirring barrel 1 is further provided with a control panel for controlling the switch of the energizing element in the device, and a power line for connecting an external power source to supply power, where the control panel and the power line are in the prior art, and are not described in detail herein.
Referring to fig. 2, the multidirectional rapid mixing device 5 for rapid mixing and stirring of pulp disposed in the stirring tank 1 in this embodiment includes a multidirectional stirring mechanism 51 disposed in the stirring tank 1, a multidirectional transmission mechanism 52 mounted on the top of the multidirectional stirring mechanism 51, and a first driving motor 53 mounted on the top of the multidirectional transmission mechanism 52, where the multidirectional stirring mechanism 51 is in driving connection with the multidirectional transmission mechanism 52, and the first driving motor 53 drives the multidirectional transmission mechanism 52 to perform driving operation, so that the multidirectional stirring mechanism 51 can perform rapid stirring operation on pulp in the stirring tank 1.
Referring to fig. 3, the multidirectional stirring mechanism 51 in this embodiment includes a primary stirring rod 511 disposed in the bottom middle of the multidirectional transmission mechanism 52, a secondary stirring rod one 512 and a secondary stirring rod two 513 disposed on both sides of the primary stirring rod 511, a plurality of primary stirring blades 514 mounted on the primary stirring rod 511 for stirring, and a plurality of secondary stirring blades one 515 and a secondary stirring blade She Er 516 mounted on the secondary stirring rod one 512 and the secondary stirring rod two 513 for stirring, wherein a bottom stirring blade 517 for stirring the inner bottom of the stirring barrel 1 is mounted on the bottom of the primary stirring rod 511, and the secondary stirring rod one 512 and the secondary stirring rod two 513 are disposed on both sides of the primary stirring rod 511 for ensuring uniform stirring of the pulp in the stirring barrel 1;
in the embodiment, three main stirring blades 514, a first auxiliary stirring blade 515 and a second auxiliary stirring blade She Er are respectively arranged, wherein the first auxiliary stirring blade 515 and the second auxiliary stirring blade She Er are arranged in parallel, the installation position of the main stirring blade 514 on the main stirring rod 511 is higher than the installation position of the first auxiliary stirring blade 515 and the second auxiliary stirring blade She Er 516 on the first auxiliary stirring rod 512 and the second auxiliary stirring rod 513, so that each main stirring blade 514 and each first auxiliary stirring blade 515 and each second auxiliary stirring blade 516 are distributed in a staggered manner, and the pulp in the stirring barrel 1 is better and uniformly stirred;
wherein, bottom stirring leaf 517 sets up to V font structure to with stirring barrel 1 bottom structure phase-match, through setting up the bottom stirring leaf 517 of V font structure, be used for stirring the paper pulp of stirring barrel 1 interior bottom, when multi-direction rapid mixing device 5 reciprocates, bottom stirring leaf 517 can intermittent type formula stir stirring barrel 1 interior bottom paper pulp, when multi-direction rapid mixing device 5 descends to the minimum promptly, bottom stirring leaf 517 can be placed in stirring barrel 1 interior bottom, realizes stirring work to its interior bottom paper pulp.
Referring to fig. 4, in this embodiment, the multidirectional transmission mechanism 52 includes an outer housing 521, an annular gear ring 522 mounted on an inner outer ring of the outer housing 521, a main gear 523 mounted on an inner middle portion and two sides of the outer housing 521, a first pinion 524, and a second pinion 525, wherein two sides of the main gear 523 are respectively engaged with the first pinion 524 and the second pinion 525, outer sides of the first pinion 524 and the second pinion 525 are respectively engaged with inner teeth of the annular gear ring 522, a first driving motor 53 is mounted on a top middle portion of the outer housing 521, an output end of the first driving motor 53 is connected with the middle portion of the main gear 523, an upper end of the main stirring rod 511 extends into the outer housing 521 and is connected with an output end of the first driving motor 53 through a coupling, and a first auxiliary stirring rod 512 and a second stirring rod 513 extend into the outer housing 521 and are respectively connected with middle portions of the first pinion 524 and the second pinion 525;
the upper ends of the main stirring rod 511, the auxiliary stirring rod I512 and the auxiliary stirring rod II 513 are positioned and installed at the bottom of the outer shell 521 and are rotationally connected through bearings so as to ensure the normal rotation of the main stirring rod 511, the auxiliary stirring rod I512 and the auxiliary stirring rod II 513;
after the first driving motor 53 works, the main gear 523 is driven to rotate, and simultaneously the main stirring rod 511 is synchronously driven to rotate in the same direction, after the main gear 523 rotates, the first auxiliary gear 524 and the second auxiliary gear 525 on two sides are synchronously driven to rotate in opposite directions, and the first auxiliary gear 524 and the second auxiliary gear 525 are meshed and connected inside the annular gear ring 522, so that the first auxiliary gear 524 and the second auxiliary gear 525 revolve around the main gear 523, and synchronously drive the first auxiliary stirring rod 512 and the second auxiliary stirring rod 513 to rotate around the main gear 523, for example, when the main gear 523 and the main stirring rod 511 rotate clockwise, the first auxiliary gear 524, the second auxiliary gear 525 and the first auxiliary stirring rod 512 and the second auxiliary stirring rod 513 rotate anticlockwise, so that after the main stirring blade 514 on the main stirring rod 511 rotates clockwise, the first auxiliary stirring blade 515 and the second auxiliary stirring rod She Er on the first auxiliary stirring rod 512 rotate anticlockwise, and the second auxiliary stirring rod 512 revolve around the main stirring rod 511, so that the first stirring rod 512 and the second stirring rod 513 revolve around the main stirring rod 511, and the efficiency of mixing in the inside of the stirring barrel 1 is greatly improved, and the uniformity of pulp stirring is improved.
Referring to fig. 5-6, in this embodiment, the up-down pushing device 6 mounted on the outside of the stirring barrel 1 and used for pushing the multi-directional rapid mixing device 5 up and down includes a mounting frame plate 61 mounted on the outside of the stirring barrel 1, the mounting frame plate 61 is fixedly mounted on the outside of the stirring barrel 1, a sliding pushing mechanism 62 mounted on the upper side of the mounting frame plate 61, the sliding pushing mechanism 62 can drive a connecting fixing plate 63 to slide up and down, the connecting fixing plate 63 mounted on the sliding pushing mechanism 62 can drive the multi-directional rapid mixing device 5 to move up and down, a turntable 64 mounted on the lower side of the mounting frame plate 61 is positioned at the middle part through a turntable positioning rod 65, a pushing frame rod 66 for connecting the turntable 64 and the sliding pushing mechanism 62, and a driving mechanism 67 mounted inside the lower side of the mounting frame plate 61, one end of the pushing frame rod 66 is in eccentric rotation connection with the turntable 64, so that the turntable 64 drives the pushing frame rod 66 to push up and down, and the driving mechanism 67 is in transmission connection with the turntable positioning rod 65, and the driving mechanism 67 is driven by the turntable positioning rod 65;
under the drive of actuating mechanism 67, drive carousel locating lever 65 rotates, drive carousel 64 by carousel locating lever 65 and rotate, and after carousel 64 rotates, drive eccentric connection's push hack lever 66 and push up and down, drive slip push mechanism 62 by push hack lever 66 and reciprocate, drive slip push mechanism 62 one side and connect fixed connection fixed plate 63 and reciprocate, finally drive multidirectional rapid mixing device 5 by connection fixed plate 63 and reciprocate, thereby carry out quick stirring to the inside upper and lower paper pulp of agitator 1 and mix, improve mixing efficiency and quality.
Referring to fig. 7, in this embodiment, the sliding pushing mechanism 62 includes a sliding pushing frame 621, a first pulley 622, a second pulley 623 and a sliding slot 624, the sliding pushing frame 621 is formed by combining two plate bodies mounted on two sides of the mounting frame plate 61, wherein in this embodiment, the number of the first pulley 622 and the second pulley 623 is two, the first pulley 622 is vertically symmetrically arranged on one side between the sliding pushing frames 621, the second pulley 623 is vertically symmetrically arranged on the other side between the sliding pushing frames 621 and is respectively connected with the inner sides of the sliding slots 624 on two sides of the mounting frame plate 61 in a sliding manner, two sides of the mounting frame plate 61 are respectively provided with a sliding slot 624, the first pulley 622 and the second pulley 623 are respectively connected with the inner sides of the sliding slots 624 on two sides of the mounting frame plate 61 in a sliding manner, and the other end of the pushing frame 66 is rotationally connected with the middle part of the plate body of the sliding frame 621 far from one side of the connection fixing plate 63;
when the pushing frame rod 66 pushes, the sliding pushing frame 621 is driven to move up and down, and the first pulley 622 and the second pulley 623 on two sides in the sliding pushing frame 621 slide on the inner sides of the sliding grooves 624 on two sides on the mounting frame plate 61, so as to drive the connecting fixing plate 63 connected on one side of the sliding pushing frame 621 to move up and down, thereby driving the multi-direction rapid mixing device 5 to move up and down, enabling the pulp in the stirring barrel 1 to be rapidly stirred and mixed, and improving the uniformity of pulp mixing.
Referring to fig. 8, in this embodiment, the driving mechanism 67 includes a driving motor two 671 installed on the lower side of the mounting plate 61, a driving primary bevel gear one 672, a driving rod 673, a driving secondary bevel gear one 674, a driving secondary bevel gear two 675 and a driving primary bevel gear two 676 installed inside the mounting plate 61, the middle part of the driving rod 673 is fixedly installed inside the mounting plate 61 through a rod fixing bracket 677, and two ends of the driving rod 673 are respectively installed with a driving secondary bevel gear one 674 and a driving secondary bevel gear two 675, the middle part of the driving primary bevel gear one 672 is connected with the output end of the driving motor two 671, wherein the driving primary bevel gear one 672 is vertically meshed with the driving secondary bevel gear one 674, so that the driving primary bevel gear one 672 rotates to drive the driving secondary bevel gear one 674, and a turntable positioning rod 65 arranged inside the mounting plate 61 penetrates and is connected with the middle part of the driving primary bevel gear two 676, wherein the driving primary bevel gear two 676 is vertically meshed with the driving secondary bevel gear two 675, so that the driving secondary bevel gear two 676 rotates to drive the driving primary bevel gear two 676 to rotate;
after the driving motor II 671 works, the driving main bevel gear II 672 is driven to rotate, then the driving main bevel gear II 672 drives the driving auxiliary bevel gear I674 at one end of the driving rod 673 to rotate, the driving rod 673 rotates along with the driving main bevel gear II 675 to drive the driving auxiliary bevel gear II 675 at the other end to rotate, the driving auxiliary bevel gear II 675 drives the driving main bevel gear II 676 to rotate, the driving main bevel gear II 676 drives the turntable positioning rod 65 to rotate, finally the turntable positioning rod 65 drives the turntable 64 to rotate, and the eccentrically connected pushing rack rod 66 is driven to push up and down through the rotation of the turntable 64, and then the pushing rack rod 66 drives the sliding pushing rack 621 to move up and down.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.