Plant raw material shredding equipment for new energy methane tank
Technical Field
The invention relates to new energy raw material processing equipment, in particular to plant raw material chopping equipment for a new energy methane tank.
Background
And (3) new energy: also known as unconventional energy sources. Refers to various forms of energy sources other than traditional energy sources. The energy to be popularized is energy which is just developed and utilized or is actively researched, such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy, nuclear fusion energy and the like.
When the plant raw materials are used for fermenting the fermentation materials of the methane tank, the raw materials need to be cut up to a certain degree to ensure high-efficiency gas production efficiency, the traditional cutting mechanism has poor cutting effect, long required time and complex operation, and therefore the development of the plant raw material cutting equipment for the new energy methane tank, which has good cutting effect, short spent time and simple and convenient operation, is urgently needed.
Disclosure of Invention
(1) Technical problem to be solved
The invention aims to overcome the defects of poor cutting effect, long required time and complicated operation of the traditional chopping mechanism, and the technical problem to be solved is to provide the plant raw material chopping equipment for the new energy methane tank, which has the advantages of good cutting effect, short spent time and simple and convenient operation.
(2) Technical scheme
In order to solve the technical problem, the invention provides plant raw material chopping equipment for a new energy methane tank, which comprises supporting legs, a supporting plate, an L-shaped rod, a cutting mechanism, a mounting plate, a pushing mechanism, a placing plate and a collecting box, wherein the supporting plate is arranged at the tops of the supporting legs on the left side and the right side, the L-shaped rod is connected between the bottom of the supporting plate and the inner side wall of the supporting leg on the right side, the cutting mechanism is arranged on the supporting plate, the mounting plate is connected to the middle of the inner side wall of the supporting leg on the left side and the inner side wall of the supporting leg on the right side, the pushing mechanism is arranged on the mounting plate, a through hole is formed in the.
Preferably, cutting mechanism is including the motor, first rotation axis, the disc, the head rod, first sliding sleeve, first slide bar and cutter, the motor is installed on the right side at backup pad top, be connected with first rotation axis on the output shaft of motor, be equipped with the disc on the first rotation axis, the articulated head rod that is connected with in eccentric position of disc front side, the front side of L type pole right-hand member is equipped with first sliding sleeve, be equipped with first slide bar in the first sliding sleeve, the top of first slide bar is articulated with the tail end of head rod, the bottom of first slide bar is equipped with the cutter.
Preferably, push mechanism is including the second sliding sleeve, the second slide bar, draw the piece, the gag lever post, push pedal and wedge, and left side landing leg front side middle part is equipped with the second sliding sleeve, is equipped with the second slide bar in the second sliding sleeve, and the left end of second slide bar is equipped with draws the piece, is equipped with the gag lever post on the second slide bar, and the gag lever post is located left side landing leg and draws between the piece, and the right side of second slide bar is equipped with the push pedal, and the bottom of push pedal is equipped with and mounting panel complex wedge.
Preferably, the compression mechanism comprises a first belt pulley, a second belt pulley, a flat belt, a second connecting rod, a third sliding sleeve, a third sliding rod and a pressing plate, the first belt pulley is arranged on the first rotating shaft, the first belt pulley is located on the front side of the disc, the second belt pulley is arranged on the supporting plate, the flat belt is wound between the first belt pulley and the second belt pulley, the second connecting rod is hinged to the front side of the second belt pulley, the third sliding sleeve is arranged on the front side of the L-shaped rod, the third sliding rod is arranged in the third sliding sleeve, the top of the third sliding rod is hinged to the other end of the second connecting rod, and the pressing plate is arranged at the bottom of the third sliding rod.
Preferably, still including complementary unit, complementary unit is including sleeve, loop bar, spring holder, first spring and contact wheel, and the front side of L type pole is equipped with the sleeve, and the sleeve is located between first sliding sleeve and the third sliding sleeve, is equipped with the loop bar in the sleeve, is equipped with the spring holder on the loop bar, is connected with first spring between spring holder and the sleeve, and the loop bar passes first spring, and the bottom of loop bar is equipped with the contact wheel.
Preferably, the protection mechanism comprises a fourth sliding sleeve, a fourth sliding rod and a baffle, the fourth sliding sleeve is arranged on the left side of the L-shaped rod, the fourth sliding sleeve is internally provided with the fourth sliding rod, the baffle is arranged at the bottom of the fourth sliding rod, and the baffle is connected with the left end of the pressing plate.
The working principle is as follows: place the collecting box on placing the board, place the left side at the mounting panel with the raw materials that need handle, start cutting mechanism work, operator control push mechanism work simultaneously, cut the raw materials under push mechanism and cutting mechanism's combined action, the raw materials after the cutting passes through the through-hole and falls into the collecting box, it places the raw materials to stop on the mounting panel after having certain raw materials to collect in the collecting box, close cutting mechanism simultaneously, the collecting box that the change will be collected full takes off and changes the same specification, can repeat above-mentioned operating procedure and cut the raw materials this moment.
Because cutting mechanism is including the motor, first rotation axis, the disc, the head rod, first sliding sleeve, first slide bar and cutter, the motor is installed on the right side at backup pad top, be connected with first rotation axis on the output shaft of motor, be equipped with the disc on the first rotation axis, the articulated head rod that is connected with in eccentric position of disc front side, the front side of L type pole right-hand member is equipped with first sliding sleeve, be equipped with first slide bar in the first sliding sleeve, the top of first slide bar is articulated with the tail end of head rod, the bottom of first slide bar is equipped with the cutter. The starting motor drives the disc to rotate through the first rotating shaft, the disc rotates and drives the first sliding rod to move up and down in the first sliding sleeve through the first connecting rod, the first sliding sleeve moves up and down to drive the cutter to move up and down, the cutter can cut the raw materials by moving up and down, and when the raw materials are not required to be cut, the motor is closed.
Because push mechanism is including the second sliding sleeve, the second slide bar, draw the piece, the gag lever post, push pedal and wedge, left side landing leg front side middle part is equipped with the second sliding sleeve, is equipped with the second slide bar in the second sliding sleeve, and the left end of second slide bar is equipped with draws the piece, is equipped with the gag lever post on the second slide bar, and the gag lever post is located left side landing leg and draws between the piece, and the right side of second slide bar is equipped with the push pedal, and the bottom of push pedal is equipped with mounting panel complex wedge. After the operator placed the raw materials on the mounting panel, the pulling was drawn the piece and is removed about, draws the piece to remove through the second slide bar drive push pedal about, removes about the push pedal and can promote the cutting position that the raw materials promoted cutting mechanism, and the wedge can make more steady of promotion process, when need not cut the raw materials, stops to promote and draws the piece and with its reset can.
Because still including compression mechanism, compression mechanism is including first belt pulley, the second belt pulley, the flat belt, the second connecting rod, the third sliding sleeve, third slide bar and clamp plate, be equipped with first belt pulley on the first rotation axis, first belt pulley is located the front side of disc, be equipped with the second belt pulley in the backup pad, it has the flat belt to wind between first belt pulley and the second belt pulley, the articulated second connecting rod that is connected with in front side of second belt pulley, the front side of L type pole is equipped with the third sliding sleeve, be equipped with the third slide bar in the third sliding sleeve, the top of third slide bar is articulated with the other end of second connecting rod, the bottom of third slide bar is equipped with the clamp plate. The cutting mechanism during operation drives first belt pulley through first rotation axis and rotates, and first belt pulley rotates and drives the second belt pulley through the flat band and rotates, and the second belt pulley rotates and drives the third slide bar through the second connecting rod and reciprocates along the third sliding sleeve, and the third slide bar reciprocates and can drive the clamp plate and reciprocate, and the clamp plate reciprocates and carries out preliminary compression to the raw materials through push mechanism propelling movement, so can improve cutting mechanism's working effect.
Because still including complementary unit, complementary unit is equipped with the sleeve including sleeve, loop bar, spring holder, first spring and contact wheel, and the front side of L type pole is equipped with the sleeve, and the sleeve is located between first sliding sleeve and the third sliding sleeve, is equipped with the loop bar in the sleeve, is equipped with the spring holder on the loop bar, is connected with first spring between spring holder and the sleeve, and the loop bar passes first spring, and the bottom of loop bar is equipped with the contact wheel. When the upper surface of the raw material preliminarily compressed by the compression mechanism contacts the contact wheel, the contact wheel drives the loop bar to move upwards under the action of the raw material, and meanwhile, the first spring is compressed, so that the contact wheel further arranges the compression mechanism, and the using effect of the invention is improved.
Because still including protection machanism, protection machanism is equipped with the fourth sliding sleeve including fourth sliding sleeve, fourth slide bar and baffle, the left side of L type pole, is equipped with the fourth slide bar in the fourth sliding sleeve, and the bottom of fourth slide bar is equipped with the baffle, and the baffle is connected with the left end of clamp plate. When the compression mechanism works, the pressing plate is driven to drive the baffle plate to move up and down, and the baffle plate can block the raw materials pushed by the pushing mechanism to a certain degree, so that the raw materials are prevented from damaging the invention.
(3) Advantageous effects
According to the invention, through the mutual matching of the cutting mechanism and the pushing mechanism, the raw materials are fully cut, meanwhile, the cut raw materials are collected by the collecting box, and the effects of good cutting effect, short time consumption and simple and convenient operation are achieved by optimizing the compression mechanism, the auxiliary mechanism and the protection mechanism.
Drawings
Fig. 1 is a first front view structure diagram of the present invention.
Fig. 2 is a second front view structure diagram of the present invention.
The labels in the figures are: 1-support leg, 2-support plate, 3-L-bar, 4-cutting mechanism, 41-motor, 42-first rotating shaft, 43-disc, 44-first connecting rod, 45-first sliding sleeve, 46-first sliding rod, 47-cutter, 5-mounting plate, 6-pushing mechanism, 61-second sliding sleeve, 62-second sliding rod, 63-pulling block, 64-limiting rod, 65-pushing plate, 66-wedge block, 7-through hole, 8-placing plate, 9-collecting box, 10-compressing mechanism, 101-first belt pulley, 102-second belt pulley, 103-flat belt, 104-second connecting rod, 105-third sliding sleeve, 106-third sliding rod, 107-pressing plate, 11-auxiliary mechanism, 111-sleeve, 112-loop bar, 113-spring seat, 114-first spring, 115-contact wheel, 12-guard mechanism, 121-fourth sliding sleeve, 122-fourth sliding bar, 123-baffle.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
The utility model provides a new forms of energy are plant material comminution device for methane-generating pit, as shown in fig. 1-2, including landing leg 1, backup pad 2, L type pole 3, cutting mechanism 4, mounting panel 5, push mechanism 6, place board 8 and collecting box 9, landing leg 1 top on the left and right sides is equipped with backup pad 2, be connected with L type pole 3 between the bottom of backup pad 2 and the 1 inside wall of right side landing leg, install cutting mechanism 4 in backup pad 2, the inside wall mid-portion of controlling collateral branch leg 1 is connected with mounting panel 5, install push mechanism 6 on the mounting panel 5, open on the right side of mounting panel 5 has through-hole 7, the inside wall bottom horizontally connect of right side landing leg 1 has places board 8, place collecting box 9 on the board 8, through-hole 7 is located directly over.
Example 2
The utility model provides a new forms of energy are plant material comminution device for methane-generating pit, as shown in fig. 1-2, including landing leg 1, backup pad 2, L type pole 3, cutting mechanism 4, mounting panel 5, push mechanism 6, place board 8 and collecting box 9, landing leg 1 top on the left and right sides is equipped with backup pad 2, be connected with L type pole 3 between the bottom of backup pad 2 and the 1 inside wall of right side landing leg, install cutting mechanism 4 in backup pad 2, the inside wall mid-portion of controlling collateral branch leg 1 is connected with mounting panel 5, install push mechanism 6 on the mounting panel 5, open on the right side of mounting panel 5 has through-hole 7, the inside wall bottom horizontally connect of right side landing leg 1 has places board 8, place collecting box 9 on the board 8, through-hole 7 is located directly over.
The cutting mechanism 4 comprises a motor 41, a first rotating shaft 42, a disc 43, a first connecting rod 44, a first sliding sleeve 45, a first sliding rod 46 and a cutter 47, the motor 41 is installed on the right side of the top of the supporting plate 2, the first rotating shaft 42 is connected to an output shaft of the motor 41, the disc 43 is arranged on the first rotating shaft 42, the first connecting rod 44 is hinged to the eccentric position of the front side of the disc 43, the first sliding sleeve 45 is arranged on the front side of the right end of the L-shaped rod 3, the first sliding sleeve 45 is internally provided with the first sliding rod 46, the top of the first sliding rod 46 is hinged to the tail end of the first connecting rod 44, and the cutter 47 is arranged at the bottom of.
Example 3
The utility model provides a new forms of energy are plant material comminution device for methane-generating pit, as shown in fig. 1-2, including landing leg 1, backup pad 2, L type pole 3, cutting mechanism 4, mounting panel 5, push mechanism 6, place board 8 and collecting box 9, landing leg 1 top on the left and right sides is equipped with backup pad 2, be connected with L type pole 3 between the bottom of backup pad 2 and the 1 inside wall of right side landing leg, install cutting mechanism 4 in backup pad 2, the inside wall mid-portion of controlling collateral branch leg 1 is connected with mounting panel 5, install push mechanism 6 on the mounting panel 5, open on the right side of mounting panel 5 has through-hole 7, the inside wall bottom horizontally connect of right side landing leg 1 has places board 8, place collecting box 9 on the board 8, through-hole 7 is located directly over.
The cutting mechanism 4 comprises a motor 41, a first rotating shaft 42, a disc 43, a first connecting rod 44, a first sliding sleeve 45, a first sliding rod 46 and a cutter 47, the motor 41 is installed on the right side of the top of the supporting plate 2, the first rotating shaft 42 is connected to an output shaft of the motor 41, the disc 43 is arranged on the first rotating shaft 42, the first connecting rod 44 is hinged to the eccentric position of the front side of the disc 43, the first sliding sleeve 45 is arranged on the front side of the right end of the L-shaped rod 3, the first sliding sleeve 45 is internally provided with the first sliding rod 46, the top of the first sliding rod 46 is hinged to the tail end of the first connecting rod 44, and the cutter 47 is arranged at the bottom of.
Push mechanism 6 is including second sliding sleeve 61, second slide bar 62, draw piece 63, gag lever post 64, push pedal 65 and wedge 66, 1 front side middle part of left side landing leg is equipped with second sliding sleeve 61, be equipped with second slide bar 62 in the second sliding sleeve 61, the left end of second slide bar 62 is equipped with draws piece 63, be equipped with gag lever post 64 on the second slide bar 62, gag lever post 64 is located between left side landing leg 1 and the draw piece 63, the right side of second slide bar 62 is equipped with push pedal 65, the bottom of push pedal 65 be equipped with mounting panel 5 complex wedge 66.
Example 4
The utility model provides a new forms of energy are plant material comminution device for methane-generating pit, as shown in fig. 1-2, including landing leg 1, backup pad 2, L type pole 3, cutting mechanism 4, mounting panel 5, push mechanism 6, place board 8 and collecting box 9, landing leg 1 top on the left and right sides is equipped with backup pad 2, be connected with L type pole 3 between the bottom of backup pad 2 and the 1 inside wall of right side landing leg, install cutting mechanism 4 in backup pad 2, the inside wall mid-portion of controlling collateral branch leg 1 is connected with mounting panel 5, install push mechanism 6 on the mounting panel 5, open on the right side of mounting panel 5 has through-hole 7, the inside wall bottom horizontally connect of right side landing leg 1 has places board 8, place collecting box 9 on the board 8, through-hole 7 is located directly over.
The cutting mechanism 4 comprises a motor 41, a first rotating shaft 42, a disc 43, a first connecting rod 44, a first sliding sleeve 45, a first sliding rod 46 and a cutter 47, the motor 41 is installed on the right side of the top of the supporting plate 2, the first rotating shaft 42 is connected to an output shaft of the motor 41, the disc 43 is arranged on the first rotating shaft 42, the first connecting rod 44 is hinged to the eccentric position of the front side of the disc 43, the first sliding sleeve 45 is arranged on the front side of the right end of the L-shaped rod 3, the first sliding sleeve 45 is internally provided with the first sliding rod 46, the top of the first sliding rod 46 is hinged to the tail end of the first connecting rod 44, and the cutter 47 is arranged at the bottom of.
Push mechanism 6 is including second sliding sleeve 61, second slide bar 62, draw piece 63, gag lever post 64, push pedal 65 and wedge 66, 1 front side middle part of left side landing leg is equipped with second sliding sleeve 61, be equipped with second slide bar 62 in the second sliding sleeve 61, the left end of second slide bar 62 is equipped with draws piece 63, be equipped with gag lever post 64 on the second slide bar 62, gag lever post 64 is located between left side landing leg 1 and the draw piece 63, the right side of second slide bar 62 is equipped with push pedal 65, the bottom of push pedal 65 be equipped with mounting panel 5 complex wedge 66.
The compression mechanism 10 comprises a first belt pulley 101, a second belt pulley 102, a flat belt 103, a second connecting rod 104, a third sliding sleeve 105, a third sliding rod 106 and a pressing plate 107, the first belt pulley 101 is arranged on the first rotating shaft 42, the first belt pulley 101 is located on the front side of the disc 43, the second belt pulley 102 is arranged on the supporting plate 2, the flat belt 103 is wound between the first belt pulley 101 and the second belt pulley 102, the second connecting rod 104 is hinged to the front side of the second belt pulley 102, the third sliding sleeve 105 is arranged on the front side of the L-shaped rod 3, the third sliding sleeve 105 is internally provided with the third sliding rod 106, the top of the third sliding rod 106 is hinged to the other end of the second connecting rod 104, and the pressing plate 107 is arranged at the bottom of the third sliding rod 106.
The L-shaped rod type sliding device is characterized by further comprising an auxiliary mechanism 11, wherein the auxiliary mechanism 11 comprises a sleeve 111, a loop bar 112, a spring seat 113, a first spring 114 and a contact wheel 115, the sleeve 111 is arranged on the front side of the L-shaped rod 3, the sleeve 111 is located between the first sliding sleeve 45 and the third sliding sleeve 105, the loop bar 112 is arranged in the sleeve 111, the spring seat 113 is arranged on the loop bar 112, the first spring 114 is connected between the spring seat 113 and the sleeve 111, the loop bar 112 penetrates through the first spring 114, and the contact wheel 115 is arranged at the bottom of the loop bar 112.
The protective mechanism 12 is further included, the protective mechanism 12 includes a fourth sliding sleeve 121, a fourth sliding rod 122 and a baffle 123, the fourth sliding sleeve 121 is arranged on the left side of the L-shaped rod 3, the fourth sliding sleeve 121 is internally provided with the fourth sliding rod 122, the baffle 123 is arranged at the bottom of the fourth sliding rod 122, and the baffle 123 is connected with the left end of the pressing plate 107.
The working principle is as follows: place collecting box 9 on placing board 8, place the left side at mounting panel 5 with the raw materials that need handle, start cutting mechanism 4 work, operator control push mechanism 6 work simultaneously, cut the raw materials under push mechanism 6 and cutting mechanism 4's combined action, the raw materials after the cutting drops to collecting box 9 through-hole 7, stop placing the raw materials on mounting panel 5 after collecting certain raw materials in collecting box 9, close cutting mechanism 4 simultaneously, the change will be collected collecting box 9 that the fill and take off and change collecting box 9 of the same specification, can repeat above-mentioned operating procedure and cut the raw materials this moment.
Because the cutting mechanism 4 comprises a motor 41, a first rotating shaft 42, a disc 43, a first connecting rod 44, a first sliding sleeve 45, a first sliding rod 46 and a cutter 47, the motor 41 is installed on the right side of the top of the supporting plate 2, the first rotating shaft 42 is connected to an output shaft of the motor 41, the disc 43 is arranged on the first rotating shaft 42, the eccentric position of the front side of the disc 43 is hinged to the first connecting rod 44, the first sliding sleeve 45 is arranged on the front side of the right end of the L-shaped rod 3, the first sliding sleeve 45 is internally provided with the first sliding rod 46, the top of the first sliding rod 46 is hinged to the tail end of the first connecting rod 44, and the cutter 47 is arranged at the bottom of. The starting motor 41 drives the disc 43 to rotate through the first rotating shaft 42, the disc 43 rotates to drive the first sliding rod 46 to move up and down in the first sliding sleeve 45 through the first connecting rod 44, the first sliding sleeve 45 moves up and down to drive the cutter 47 to move up and down, the cutter 47 moves up and down to cut the raw material, and when the raw material is not required to be cut, the motor 41 is turned off.
Because push mechanism 6 is including second sliding sleeve 61, second slide bar 62, draw piece 63, gag lever post 64, push pedal 65 and wedge 66, 1 front side middle part of left side landing leg is equipped with second sliding sleeve 61, be equipped with second slide bar 62 in the second sliding sleeve 61, the left end of second slide bar 62 is equipped with draws piece 63, be equipped with gag lever post 64 on the second slide bar 62, gag lever post 64 is located between left side landing leg 1 and the draw piece 63, the right side of second slide bar 62 is equipped with push pedal 65, the bottom of push pedal 65 is equipped with the wedge 66 with mounting panel 5 complex. After the operator places the raw materials on mounting panel 5, the pulling draws piece 63 to remove about, draws piece 63 to drive push pedal 65 through second slide bar 62 and removes about, and push pedal 65 removes about can promoting the raw materials and promote the cutting position of cutting mechanism 4, and wedge 66 can make the more steady of promotion process, when need not cutting the raw materials, stops to promote and draws piece 63 and with it can reset.
Because the compression mechanism 10 is further included, the compression mechanism 10 includes a first belt pulley 101, a second belt pulley 102, a flat belt 103, a second connecting rod 104, a third sliding sleeve 105, a third sliding rod 106 and a pressing plate 107, the first rotating shaft 42 is provided with the first belt pulley 101, the first belt pulley 101 is located on the front side of the disc 43, the support plate 2 is provided with the second belt pulley 102, the flat belt 103 is wound between the first belt pulley 101 and the second belt pulley 102, the front side of the second belt pulley 102 is hinged to the second connecting rod 104, the front side of the L-shaped rod 3 is provided with the third sliding sleeve 105, the third sliding sleeve 105 is provided with the third sliding rod 106, the top of the third sliding rod 106 is hinged to the other end of the second connecting rod 104, and the bottom of the third sliding rod 106 is provided with the pressing plate 107. The cutting mechanism 4 during operation drives first belt pulley 101 through first rotation axis 42 and rotates, first belt pulley 101 rotates and drives second belt pulley 102 through flat belt 103 and rotates, second belt pulley 102 rotates and drives third slide bar 106 through second connecting rod 104 and reciprocate along third sliding sleeve 105, third slide bar 106 reciprocates and can drive clamp plate 107 and reciprocate, clamp plate 107 reciprocates and carries out preliminary compression to the raw materials through push mechanism 6 propelling movement, so can improve cutting mechanism 4's working effect.
Because the auxiliary mechanism 11 is further included, the auxiliary mechanism 11 includes a sleeve 111, a loop bar 112, a spring seat 113, a first spring 114 and a contact wheel 115, the sleeve 111 is arranged on the front side of the L-shaped rod 3, the sleeve 111 is located between the first sliding sleeve 45 and the third sliding sleeve 105, the loop bar 112 is arranged in the sleeve 111, the spring seat 113 is arranged on the loop bar 112, the first spring 114 is connected between the spring seat 113 and the sleeve 111, the loop bar 112 penetrates through the first spring 114, and the contact wheel 115 is arranged at the bottom of the loop bar 112. When the upper surface of the raw material initially compressed by the compression mechanism 10 contacts the contact wheel 115, the contact wheel 115 drives the loop bar 112 to move upwards under the action of the raw material, and the first spring 114 compresses, so that the contact wheel 115 further arranges the compression mechanism 10, and the using effect of the invention is improved.
Because the protection mechanism 12 is further included, the protection mechanism 12 includes a fourth sliding sleeve 121, a fourth sliding rod 122 and a baffle 123, the fourth sliding sleeve 121 is disposed on the left side of the L-shaped rod 3, the fourth sliding sleeve 121 is internally provided with the fourth sliding rod 122, the bottom of the fourth sliding rod 122 is provided with the baffle 123, and the baffle 123 is connected with the left end of the pressing plate 107. When the compression mechanism 10 works, the pressing plate 107 is driven to drive the baffle 123 to move up and down, and the baffle 123 can block the raw materials pushed by the pushing mechanism 6 to a certain degree, so that the raw materials are prevented from damaging the invention.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.