阅读说明：本技术 一种园林用树枝粉碎机 (Branch rubbing crusher is used in gardens ) 是由 林墨洋 李宇 刘益曦 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种园林用树枝粉碎机,包括桶体、初粉碎机构、二次粉碎机构和末粉碎机构,桶体的上端设有进料斗；初粉碎机构设置在桶体内,进料斗的出口伸入初粉碎机构内；二次粉碎机构设置在桶体内,二次粉碎机构位于初粉碎机构的下方,且初粉碎机构与二次粉碎机构之间通过一导管相连通；末粉碎机构设置在桶体内,末粉碎机构位于二次粉碎机构的下方,二次粉碎机构与末粉碎机构连通,末粉碎机构上具有出料口,末粉碎机构通过出料口与位于桶体外的树枝收纳盒连通。由于采用了上述结构,提高了本发明对树枝的粉碎效率,优化了本发明对树枝的粉碎效果,而且可以对本发明在粉碎过程中产生的灰尘进行消除,防止灰尘沾染到桶体的内壁上。(The invention discloses a tree branch crusher for gardens, which comprises a barrel body, a primary crushing mechanism, a secondary crushing mechanism and a final crushing mechanism, wherein the upper end of the barrel body is provided with a feed hopper; the primary crushing mechanism is arranged in the barrel, and an outlet of the feed hopper extends into the primary crushing mechanism; the secondary crushing mechanism is arranged in the barrel body and is positioned below the primary crushing mechanism, and the primary crushing mechanism is communicated with the secondary crushing mechanism through a conduit; the last rubbing crusher constructs to be set up in the barrel, and last rubbing crusher constructs the below that is located secondary crushing mechanism, and secondary crushing mechanism and last rubbing crusher construct the intercommunication, has the discharge gate on the last rubbing crusher structure, and last rubbing crusher constructs through discharge gate and the branch receiver that is located the barrel outside communicates. Due to the adoption of the structure, the tree branch crushing efficiency is improved, the tree branch crushing effect is optimized, dust generated in the crushing process can be eliminated, and the dust is prevented from being stained on the inner wall of the barrel body.)

1. The utility model provides a branch rubbing crusher is used in gardens which characterized in that includes:

the device comprises a barrel body (10), wherein the upper end of the barrel body (10) is provided with a feed hopper (11);

the primary crushing mechanism is arranged in the barrel body (10), and an outlet of the feed hopper (11) extends into the primary crushing mechanism;

the secondary crushing mechanism is arranged in the barrel body (10), is positioned below the primary crushing mechanism and is communicated with the secondary crushing mechanism through a conduit (20);

last rubbing crusher constructs, last rubbing crusher constructs the setting in staving (10), last rubbing crusher constructs to be located secondary crushing mechanism's below, secondary crushing mechanism with last rubbing crusher constructs the intercommunication, last rubbing crusher constructs to have discharge gate (30), last rubbing crusher constructs to pass through discharge gate (30) with be located branch receiver (40) intercommunication outside staving (10).

2. The garden branch crusher as defined in claim 1, wherein the primary crushing mechanism includes:

a first crushing barrel (50), wherein the first crushing barrel (50) is arranged in the barrel body (10) through a pair of annular supporting plates (12) positioned in the barrel body (10), and an outlet of the feed hopper (11) extends into the first crushing barrel (50);

a pair of pulverizing rollers (60), the pair of pulverizing rollers (60) being disposed in the first pulverizing barrel (50), and the pair of pulverizing rollers (60) being located below an outlet of the hopper (11);

a first motor (70), the first motor (70) being disposed on a bottom of the first pulverizing barrel (50);

smash post (80), smash post (80) including consecutive last crushing post (81) and lower crushing post (82), the lower extreme of smashing post (82) down with the output shaft of first motor (70) links to each other, it is equipped with the first crushing tooth of a plurality of (90) to go up crushing post (81), it smashes tooth (100) to be equipped with a plurality of second on crushing post (82) down.

3. The tree branch shredder for gardens as claimed in claim 2, wherein the first shredding tooth (90) has a front tooth surface (91) and a rear tooth surface (92), a main blade (93) is formed between the front tooth surface (91) and the rear tooth surface (92), a first tooth socket (911) and a second tooth socket (912) are formed on the front tooth surface (91), a first arc blade (94) and a second arc blade (95) are formed between the side wall of the first tooth socket (911) and the front tooth surface (91), the first arc blade (94) and the second arc blade (95) intersect on one side surface of the first shredding tooth (90), and a third arc blade (96) and a fourth arc blade (97) are formed between the side wall of the second tooth socket (912) and the front tooth surface (91).

4. The branch grinder for gardens as defined in claim 2, wherein the second grinding tooth (100) comprises an upper toothed plate (101) and a lower toothed plate (102) which are stacked on each other, the lower toothed plate (102) is connected to the lower grinding column (82), the upper toothed plate (101) has a front edge (1011), the upper toothed plate (101) has a through groove (1012), the upper toothed plate (101) has top and bottom surfaces, and the through groove (1012) forms a vertical edge (1013) and a concave arc edge 1014 (1014) on the upper toothed plate (101).

5. The garden branch crusher as defined in claim 1, wherein the secondary crushing mechanism includes:

a second crushing barrel (110), the second crushing barrel (110) being disposed in the barrel body (10) through an annular support plate (12), the conduit (20) communicating the first crushing barrel (50) with the second crushing barrel (110);

a second motor (120), the second motor (120) being disposed at a top end of the second pulverizing barrel (110);

a first rotating shaft (130), wherein the first rotating shaft (130) is connected with an output shaft of the second motor (120);

a first helical blade (140), the first helical blade (140) being disposed on the first shaft (130);

a third motor (150), the third motor (150) being disposed at one side of the second pulverizing barrel (110);

the second rotating shaft (160), the second rotating shaft (160) is connected with the output shaft of the third motor (150), and the second rotating shaft (160) penetrates through the second crushing barrel (110);

a plurality of crushing rods (170), a plurality of crushing rods (170) are annularly arranged on the periphery of the second rotating shaft (160).

6. The branch grinder for gardens as claimed in claim 5, wherein the grinding bar (170) is provided with a spiral groove (171), a plurality of inclined grooves (172) and a plurality of curved V-shaped grooves (173), two intersecting spiral blades (174) are formed between the spiral groove (171) and the surface of the grinding bar (170), two intersecting inclined blades (175) are formed between the inclined grooves (172) and the surface of the grinding bar (170), and two parallel curved blades (176) and two intersecting short blades (177) are formed between the curved V-shaped grooves (173) and the surface of the grinding bar (170).

7. The garden branch shredder according to claim 6, wherein the last shredder mechanism comprises:

the third crushing barrel (180) is arranged in the barrel body (10) through a plurality of supporting columns (13) positioned in the barrel body (10), the discharge hole (30) is formed in the third crushing barrel (180), and an outlet of the second crushing barrel (110) is communicated with an inner cavity of the third crushing barrel (180);

a fourth motor (190), the fourth motor (190) being disposed on an end surface of the third pulverizing barrel (180);

the third rotating shaft (200), the third rotating shaft (200) is connected with the output shaft of the fourth motor (190);

a second helical blade (210), the second helical blade (210) being disposed on the third shaft (200).

8. The branch grinder for gardens as defined in claim 2, further comprising a pair of dust removing devices respectively located at both sides of the first grinding tub (50), the dust removing devices comprising:

a water delivery pipe (220), wherein the water delivery pipe (220) is used for delivering water outside the barrel body (10) to a water supply tank (230) on the annular supporting plate (12);

one end of the upper water pipe (240) is connected with a water pump (250) positioned in the water supply tank (230), the other end of the upper water pipe (240) is provided with a spray head (260), and the spray head (260) can spray water into the first crushing barrel (50).

9. The garden branch grinder as set forth in claim 8, wherein the guide pipe (20) is provided with a filter screen (270), a water storage tank (280) is provided below the filter screen (270), and the water storage tank (280) is provided on the corresponding ring-shaped support plate (12).

Technical Field

The invention relates to a crushing machine, in particular to a branch crushing machine for gardens.

Background

A pulverizer is a machine that pulverizes a large-sized solid raw material to a desired size. The crusher consists of coarse crushing, fine crushing, wind conveying and other devices, and the purpose of the crusher is achieved in a high-speed impact mode.

With the increasing awareness of people on environmental protection and the increasing requirements on environment, random stacking and burning of waste branches and fallen leaves in cities are gradually prohibited, and the treatment and comprehensive utilization of the waste branches become problems to be solved urgently by urban garden and environmental sanitation departments.

Disclosure of Invention

In view of the above, the invention provides the garden branch grinder with a good grinding effect.

In order to achieve the purpose, the invention provides the following technical scheme:

a branch rubbing crusher is used in gardens, wherein, includes:

the upper end of the barrel body is provided with a feed hopper;

the primary crushing mechanism is arranged in the barrel body, and an outlet of the feed hopper extends into the primary crushing mechanism;

the secondary crushing mechanism is arranged in the barrel body, is positioned below the primary crushing mechanism and is communicated with the secondary crushing mechanism through a conduit;

last rubbing crusher constructs, last rubbing crusher constructs the setting is in the barrel, last rubbing crusher constructs to be located secondary crushing mechanism's below, secondary crushing mechanism with last rubbing crusher constructs the intercommunication, last rubbing crusher constructs and has the discharge gate, last rubbing crusher constructs to pass through the discharge gate with be located the external branch receiver intercommunication of barrel.

Further, the preliminary crushing mechanism includes:

the first crushing barrel is arranged in the barrel body through a pair of annular supporting plates positioned in the barrel body, and an outlet of the feed hopper extends into the first crushing barrel;

a pair of pulverizing rollers disposed in the first pulverizing barrel and located below the outlet of the hopper;

a first motor disposed on a bottom of the first pulverizing barrel;

smash the post, smash the post including consecutive last crushing post and lower crushing post, the lower extreme of smashing the post down with the output shaft of first motor links to each other, it is equipped with the first tooth of smashing of a plurality of to go up crushing post, smash the last tooth of smashing of a plurality of second that is equipped with of post down.

Furthermore, the first crushing tooth is provided with a front tooth surface and a rear tooth surface, a main blade is formed between the front tooth surface and the rear tooth surface, a first tooth groove and a second tooth groove are formed in the front tooth surface, a first arc-shaped blade and a second arc-shaped blade are formed between the side wall of the first tooth groove and the front tooth surface, the first arc-shaped blade and the second arc-shaped blade are intersected on one side surface of the first crushing tooth, and a third arc-shaped blade and a fourth arc-shaped blade are formed between the side wall of the second tooth groove and the front tooth surface.

Furthermore, the second crushing teeth comprise an upper toothed plate and a lower toothed plate which are mutually overlapped, the lower toothed plate is connected with the lower crushing column, the upper toothed plate is provided with a front edge part, the upper toothed plate is provided with a through groove, the top surface and the bottom surface of the upper toothed plate are provided with a vertical edge and a concave arc edge, and the through groove enables the upper toothed plate to be provided with a vertical edge and a concave arc edge.

Further, the secondary crushing mechanism includes:

the second crushing barrel is arranged in the barrel body through an annular supporting plate, and the first crushing barrel is communicated with the second crushing barrel through the guide pipe;

a second motor disposed at a top end of the second pulverizing barrel;

the first rotating shaft is connected with an output shaft of the second motor;

a first helical blade disposed on the first shaft;

a third motor disposed at one side of the second pulverizing barrel;

the second rotating shaft is connected with an output shaft of the third motor and penetrates through the second crushing barrel;

and the crushing rods are annularly arranged on the periphery of the second rotating shaft.

Furthermore, the crushing rod is provided with a spiral groove, a plurality of inclined grooves and a plurality of bent V-shaped grooves, two crossed spiral blades are formed between the spiral groove and the surface of the crushing rod, two crossed inclined blades are formed between the inclined grooves and the surface of the crushing rod, and two parallel bent blades and two crossed short blades are formed between the bent V-shaped grooves and the surface of the crushing rod.

Still further, the last comminution mechanism comprises:

the third crushing barrel is arranged in the barrel body through a plurality of supporting columns located in the barrel body, the discharge port is formed in the third crushing barrel, and an outlet of the second crushing barrel is communicated with an inner cavity of the third crushing barrel;

a fourth motor disposed on an end surface of the third pulverizing barrel;

the third rotating shaft is connected with an output shaft of the fourth motor;

and the second helical blade is arranged on the third rotating shaft.

Still further, a pair of dust removing devices respectively located at both sides of the first pulverizing barrel is further included, and the dust removing devices include:

the water supply pipe is used for conveying water outside the barrel body to a water supply tank on the annular supporting plate;

the one end of water feeding pipe with be located the water pump of feed tank links to each other, the other end of water feeding pipe is equipped with a shower nozzle, the shower nozzle can with water spout to in the first crushing bucket.

Furthermore, a filter screen plate is arranged on the guide pipe, a water storage tank is arranged below the filter screen plate, and the water storage tank is arranged on the corresponding annular supporting plate.

The technical scheme can show that the invention has the advantages that:

1. because the primary crushing mechanism, the secondary crushing mechanism and the final crushing mechanism are arranged in the invention, the branches can be crushed for three times, the crushing efficiency of the invention on the branches is improved, and the crushing effect of the invention on the branches is optimized;

2. because the dust removal device is arranged in the invention, the dust removal device can remove the generated dust in the branch crushing process, and the dust generated in the branch crushing process is prevented from being attached to the inner wall of the first crushing barrel, the second crushing barrel or the third crushing barrel to influence the operation of the invention.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:

fig. 1 is a cross-sectional view of the present invention.

FIG. 2 is a schematic view of the structure of the crushing column of the present invention.

Fig. 3 is a schematic view of the structure of the first pulverizing tooth of the present invention.

Fig. 4 is a schematic view of the structure of the second pulverizing tooth of the present invention.

Fig. 5 is a schematic structural view of the secondary pulverization mechanism of the present invention.

Fig. 6 is a schematic view of the structure of the pulverizing rod of the present invention.

Labeled as: barrel 10, feed hopper 11, annular support plate 12, support column 13, conduit 20, discharge hole 30, branch storage box 40, first crushing barrel 50, guide plate 51, crushing roller 60, first motor 70, crushing column 80, upper crushing column 81, cone 811, first circular truncated cone 812, second circular truncated cone 813, lower crushing column 82, oblate circular truncated cone 821, cylinder 822, first crushing tooth 90, front tooth surface 91, first tooth space 911, second tooth space 912, rear tooth surface 92, main edge 93, first arc-shaped edge 94, second arc-shaped edge 95, third arc-shaped edge 96, fourth arc-shaped edge 97, second crushing tooth 100, upper tooth plate 101, front edge 1011, lower tooth plate 102, through groove 1012, vertical edge 1013, concave arc-shaped edge 1014, second crushing barrel 110, second motor 120, first rotating shaft 130, first helical blade 140, third motor 150, second rotating shaft 160, crushing rod 170, helical groove 171, groove 172, oblique groove 172, The crushing device comprises a bent V-shaped groove 173, a spiral blade 174, an inclined blade 175, a bent blade 176, a short blade 177, a third crushing barrel 180, a fourth motor 190, a third rotating shaft 200, a second spiral blade 210, a water conveying pipe 220, a water supply tank 230, a water feeding pipe 240, a water pump 250, a spray head 260, a filter screen plate 270 and a water storage tank 280.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, a tree branch crusher for gardens as shown in fig. 1 comprises a barrel body 10, a primary crushing mechanism, a secondary crushing mechanism and a final crushing mechanism, wherein a feed hopper 11 is arranged at the upper end of the barrel body 10, the primary crushing mechanism is arranged in the barrel body 10, an outlet of the feed hopper 11 extends into the primary crushing mechanism, the secondary crushing mechanism is arranged in the barrel body 10, the secondary crushing mechanism is positioned below the primary crushing mechanism, the primary crushing mechanism and the secondary crushing mechanism are communicated through a conduit 20, the final crushing mechanism is arranged in the barrel body 10, the final crushing mechanism is positioned below the secondary crushing mechanism, the secondary crushing mechanism is communicated with the final crushing mechanism, a discharge port 30 is arranged on the final crushing mechanism, the final crushing mechanism is communicated with a tree branch storage box 40 positioned outside the barrel body 10 through the discharge port 30, branch receiver 40 detachably connects outside staving 10, because set up primary crushing mechanism, secondary crushing mechanism and last rubbing crusher in this branch rubbing crusher for gardens, therefore improved this branch rubbing crusher for gardens to the crushing efficiency of branch, optimized this branch rubbing crusher for gardens to the crushing effect of branch.

As shown in fig. 1 and 2, the primary crushing mechanism includes a first crushing barrel 50, a pair of crushing rollers 60, a first motor 70 and a crushing column 80, the first crushing barrel 50 is disposed in the barrel 10 through a pair of annular support plates 12 located in the barrel 10, an outlet of the feed hopper 11 extends into the first crushing barrel 50, the pair of crushing rollers 60 is disposed in the first crushing barrel 50, the pair of crushing rollers 60 is located below the outlet of the hopper 11, the first motor 70 is disposed on the bottom of the first crushing barrel 50, the crushing column 80 includes an upper crushing column 81 and a lower crushing column 82 which are sequentially connected, a lower end of the lower crushing column 82 is connected with an output shaft of the first motor 70, a plurality of guide plates 51 are disposed on an inner wall of the first crushing barrel 50, branches can enter between the guide plates 51 and the crushing column 80 after being crushed by the pair of crushing rollers 60, the upper crushing column 81 is provided with a plurality of first crushing teeth 90, and the lower crushing column 82 is provided with a plurality of second crushing teeth 100.

In this embodiment, the upper crushing column 81 comprises a cone 811, a first circular truncated cone 812 and a second circular truncated cone 813 which are connected in sequence, the large end surface of the first circular truncated cone 812 is connected with the bottom surface of the cone 811, the small end surface of the first circular truncated cone 812 is connected with the large end surface of the second circular truncated cone 813, a plurality of first crushing teeth 90 are arranged on the first circular truncated cone 812 and the second circular truncated cone 813, and since the upper crushing column 81 comprises the cone 811, branches can enter between the crushing column 80 and the guide plate 51 along the side surface of the cone 811 after being crushed by the pair of crushing rollers 60.

In this embodiment, the lower pulverizing column 82 includes an oblate pillar 821 and a cylinder 822 connected in sequence, the small end surface of the second pillar 813 is connected to the small end surface of the oblate pillar 821, the large end surface of the oblate pillar 821 is connected to the cylinder 822, and the plurality of second pulverizing teeth 100 are disposed on the cylinder 822.

As shown in fig. 3, the first crushing tooth 90 has a front tooth surface 91 and a rear tooth surface 92, a main blade 93 is formed between the front tooth surface 91 and the rear tooth surface 92, a first tooth groove 911 and a second tooth groove 912 are formed on the front tooth surface 91, a first arc-shaped blade 94 and a second arc-shaped blade 95 are formed between the side wall of the first tooth groove 911 and the front tooth surface 91, the first arc-shaped blade 94 and the second arc-shaped blade 95 intersect on one side surface of the first crushing tooth 90, a third arc-shaped blade 96 and a fourth arc-shaped blade 97 are formed between the side wall of the second tooth groove 912 and the front tooth surface 91, and the crushing effect of the first crushing tooth 90 on branches is enhanced because the first crushing tooth 90 has the first arc-shaped blade 94, the second arc-shaped blade 95, the third arc-shaped blade 96 and the fourth arc-shaped blade 97.

As shown in fig. 4, the second crushing tooth 100 includes an upper tooth plate 101 and a lower tooth plate 102 stacked on each other, the lower tooth plate 102 is connected to the lower crushing column 82, the upper tooth plate 101 has a front edge 1011, the upper tooth plate 101 has a through slot 1012, the top surface and the bottom surface of the upper tooth plate 101 are formed with the through slot 1012, and the vertical edge 1013 and the concave arc edge 1014 are formed on the upper tooth plate 101, so that the crushing effect of the second crushing tooth 100 on branches is enhanced because the second crushing tooth 100 has the front edge 1011, the vertical edge 1013 and the concave arc edge 1014.

As shown in fig. 1 and 5, the secondary pulverizing mechanism includes a second pulverizing barrel 110, a second motor 120, a first rotating shaft 130, a first helical blade 140, a third motor 150, a second rotating shaft 160 and a plurality of pulverizing rods 170, the second pulverizing barrel 110 is disposed in the barrel body 10 through an annular support plate 12, the guide pipe 20 communicates the first pulverizing barrel 50 with the second pulverizing barrel 110, the second motor 120 is disposed at the top end of the second pulverizing barrel 110, the first rotating shaft 130 is connected to an output shaft of the second motor 120, the first screw blade 140 is provided on the first rotating shaft 130, the third motor 150 is provided at one side of the second pulverizing barrel 110, the second rotating shaft 160 is connected to an output shaft of the third motor 150, and the second rotating shaft 160 penetrates the second pulverizing barrel 110, and a plurality of pulverizing rods 170 are annularly disposed on the outer circumference of the second rotating shaft 160.

As shown in fig. 6, the pulverizing rod 170 is provided with a spiral groove 171, a plurality of inclined grooves 172 and a plurality of curved V-shaped grooves 173, two intersecting spiral blades 174 are formed between the spiral groove 171 and the surface of the pulverizing rod 170, two intersecting inclined blades 175 are formed between the inclined grooves 172 and the surface of the pulverizing rod 170, two parallel curved blades 176 and two intersecting short blades 177 are formed between the curved V-shaped grooves 173 and the surface of the pulverizing rod 170, and the pulverizing effect of the pulverizing rod 170 on branches is enhanced because the pulverizing rod 170 is provided with the spiral blades 174, the inclined blades 175, the curved blades 176 and the short blades 177.

As shown in fig. 1, the final pulverizing mechanism includes a third pulverizing barrel 180, a fourth motor 190, a third rotating shaft 200 and a second helical blade 210, the third pulverizing barrel 180 is disposed in the barrel 10 through a plurality of support pillars 13 located in the barrel 10, the discharge port 30 is disposed on the third pulverizing barrel 180, an outlet of the second pulverizing barrel 110 is communicated with an inner cavity of the third pulverizing barrel 180, the fourth motor 190 is disposed on an end surface of the third pulverizing barrel 180, the third rotating shaft 200 is connected with an output shaft of the fourth motor 190, and the second helical blade 210 is disposed on the third rotating shaft 200.

As shown in fig. 1, the tree branch crusher for gardens further comprises a pair of dust removing devices respectively located at two sides of the first crushing barrel 50, wherein each dust removing device comprises a water pipe 220 and a water supply pipe 240, the water supply pipe 220 is used for conveying water outside the barrel body 10 to a water supply tank 230 located on the annular support plate 12, one end of the water supply pipe 240 is connected with a water pump 250 located in the water supply tank 230, the other end of the water supply pipe 240 is provided with a spray head 260, and the spray head 260 can spray water into the first crushing barrel 50.

In this embodiment, the duct 20 is provided with a filter screen 270, a water storage tank 280 is disposed below the filter screen 270, and the water storage tank 280 is disposed on the corresponding annular support plate 12.

In above-mentioned structure, the operator puts the branch into feeder hopper 11 earlier, the branch gets into between a pair of crushing roller 60 afterwards, it gets into between stock guide 51 and the crushing post 80 after smashing by a pair of crushing roller 60, at this moment, start water pump 250 and make shower nozzle 260 spray water in to first crushing bucket 50, clear away the dust in the first crushing bucket 50, the water of cleaing away the dust can be smugglied secretly the dust and flow into storage water tank 280 after filtering from filtering screen plate 270, all the other branches then can get into and smash the bucket 110 in the second and carry out the regrinding, branch after the regrinding can get into in third crushing bucket 180, carry out the third and smash, the branch of smashing the completion at last can be followed discharge gate 30 and got into branch receiver 40.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.