阅读说明：本技术 一种横向设置的木材粉碎机构 (Transversely-arranged wood smashing mechanism ) 是由 张保峰 于 2021-08-19 设计创作，主要内容包括：一种横向设置的木材粉碎机构,粉碎筒底部设有支架,粉碎筒内设有活动环形网板,活动环形网板将粉碎筒分为内层和外层,粉碎筒底部中心设有电机,粉碎筒内设有主动轴,主动轴通过电机驱动,主动轴上设有旋转刀片,旋转刀片位于内层,粉碎筒上设有进料管,进料管与粉碎筒内连通,粉碎筒侧壁设有开口,开口处设有出料管。进料管分为两端结构,包括固定管和波纹管,固定管底部与波纹管顶部连接,波纹管底部与粉碎筒连接。固定管侧壁连接有横向板,横向板与内板之间连接有伸缩杆,伸缩杆上套有压缩弹簧。下压固定管,伸缩杆收缩,压缩弹簧下压,波纹管收紧,整个进料管呈下压趋势,将卡在进料管内的木材下压送至粉碎筒内,安全便捷。(The utility model provides a horizontal timber rubbing crusher who sets up constructs, the crushing barrel bottom is equipped with the support, be equipped with movable annular otter board in the crushing barrel, activity annular otter board divide into inlayer and skin with the crushing barrel, crushing barrel bottom center is equipped with the motor, be equipped with the driving shaft in the crushing barrel, the driving shaft passes through motor drive, be equipped with the rotary blade on the driving shaft, the rotary blade is located the inlayer, be equipped with the inlet pipe on the crushing barrel, feed pipe and crushing barrel intercommunication in, the crushing barrel lateral wall is equipped with the opening, the opening part is equipped with the discharging pipe. The inlet pipe is divided into two end structures, including fixed pipe and bellows, and fixed socle portion is connected with the bellows top, and the bellows bottom is connected with crushing section of thick bamboo. The fixed pipe side wall is connected with horizontal board, is connected with the telescopic link between horizontal board and the inner panel, and the cover has compression spring on the telescopic link. The fixed pipe of pushing down, the telescopic link shrink, compression spring pushes down, and the bellows tightens up, and whole inlet pipe is the trend of pushing down, will block in the interior timber of inlet pipe pushes down the pressure-feed to crushing barrel in, it is safe convenient.)

1. The utility model provides a horizontal timber rubbing crusher constructs that sets up which characterized in that: including the horizontal crushing barrel of placing, the crushing barrel bottom is equipped with the support, be equipped with movable annular otter board in the crushing barrel, activity annular otter board divide into inlayer and skin with the crushing barrel, crushing barrel bottom center is equipped with the motor, be equipped with the driving shaft in the crushing barrel, the driving shaft passes through motor drive, be equipped with the rotary blade on the driving shaft, the rotary blade is located the inlayer, be equipped with the inlet pipe on the crushing barrel, feed through in inlet pipe and the crushing barrel, the crushing barrel lateral wall is equipped with the opening, and the opening part is equipped with the discharging pipe, the inlet pipe divide into the both ends structure, including fixed pipe and bellows, fixed socle portion is connected with the bellows top, the bellows bottom with the crushing barrel is connected.

2. A laterally arranged wood crushing mechanism according to claim 1 wherein: the side wall of the fixed pipe is connected with a transverse plate, a telescopic rod is connected between the transverse plate and the inner plate, and a compression spring is sleeved on the telescopic rod.

3. A laterally arranged wood crushing mechanism according to claim 1 wherein: the crushing cylinder top barrel is divided into an inner plate and an outer ring, the outer ring and the crushing cylinder side wall are of an integrated structure, the inner plate is connected with the outer ring through a plurality of C-shaped plates, openings of the C-shaped plates face downwards, gaps are reserved between the inner plate and the outer ring to form a circle of annular grooves, the movable annular net plate is inserted into the annular grooves, the side wall of the movable annular net plate is connected with a stirring rod, and the stirring rod is located on the outer layer.

4. A laterally arranged wood crushing mechanism according to claim 3 wherein: the top of the movable annular screen plate extends out of the top of the crushing barrel, the top of the movable annular screen plate is connected with an annular slide rail, sliding grooves are formed in two sides of an opening of the C-shaped plate, and the annular slide rail is clamped in the sliding grooves.

5. A laterally arranged wood crushing mechanism according to claim 4 wherein: the top surface of the annular slide rail is a tooth surface, a notch is formed in the top surface of one C-shaped plate, bearing plates are arranged on the inner plate and the outer ring, a driven shaft is arranged between the bearing plates, a first gear is arranged on the driven shaft, and the first gear is located in the notch and meshed with the tooth surface of the annular slide rail.

6. A laterally arranged wood crushing mechanism according to claim 5 wherein: the top of the crushing barrel is extended out of the driving shaft, a first gear ring is connected to the top of the crushing barrel, a second gear ring is connected to the inner plate in a sliding mode, the second gear ring is arranged on the outer ring of the first gear ring, the second gear ring and the first gear ring are in meshing transmission through a plurality of second gears, the second gears are connected to shafts fixed on the inner plate, partial teeth are arranged on the top surface of the second gear ring, one end of the driven shaft extends to the upper portion of the second gear ring and is connected with a third gear, and the third gear is meshed with the partial teeth on the top surface of the second gear ring and is separated from other parts of the top surface of the second gear ring.

The technical field is as follows:

the invention relates to the field of cellulose processing equipment, in particular to a transversely arranged wood crushing mechanism.

Background art:

the lignocellulose is an organic flocculent fiber substance obtained by chemical treatment and mechanical processing of natural renewable wood, and is nontoxic, tasteless, pollution-free and radioactivity-free.

The coating is widely applied to the fields of concrete mortar, gypsum products, wood pulp sponge, asphalt roads and the like, and has good effects of preventing coating cracking, improving water retention, improving production stability and construction convenience, increasing strength, enhancing adhesion to the surface and the like.

The crushing section of thick bamboo of current transversely placing, the top feeding, the side ejection of compact, the back is smashed to timber gets into the skin through activity annular otter board under the effect of centrifugal force, and timber constantly sinks, but timber also blocks easily in the inlet tube, needs manually to send into timber, but the inlet pipe below is rotary blade, and direct manual danger is sent into timber.

Disclosure of Invention

In order to solve the problems in the prior art, a transversely arranged wood smashing mechanism is provided.

In order to achieve the purpose, the invention is realized by the following specific scheme:

the utility model provides a horizontal timber rubbing crusher who sets up constructs, includes the crushing barrel of transversely placing, the crushing barrel bottom is equipped with the support, be equipped with movable annular otter board in the crushing barrel, activity annular otter board divide into inlayer and skin with the crushing barrel, crushing barrel bottom center is equipped with the motor, be equipped with the driving shaft in the crushing barrel, the driving shaft passes through motor drive, be equipped with the spinning blade on the driving shaft, the spinning blade is located the inlayer, be equipped with the inlet pipe on the crushing barrel, feed pipe and crushing barrel intercommunication, the crushing barrel lateral wall is equipped with the opening, and the opening part is equipped with the discharging pipe. The inlet pipe divide into both ends structure, including fixed pipe and bellows, fixed socle portion is connected with the bellows top, the bellows bottom with crushing section of thick bamboo is connected. The side wall of the fixed pipe is connected with a transverse plate, a telescopic rod is connected between the transverse plate and the inner plate, and a compression spring is sleeved on the telescopic rod.

The further technology of the invention is as follows:

preferably, crushing barrel top barrel divide into inner panel and outer lane, outer lane and crushing barrel lateral wall body structure, the inner panel is connected through a plurality of C templates with the outer lane, the opening of C template is down, leave the clearance between inner panel and the outer lane, form the round ring channel, activity annular otter board is inserted in the ring channel, activity annular otter board lateral wall is connected with the stirring rod, the stirring rod is located the skin.

Preferably, a fixed annular screen plate is arranged in the crushing barrel, the fixed annular screen plate is tightly attached to the movable annular screen plate, and meshes of the fixed annular screen plate are the same as meshes of the movable annular screen plate in size and are in one-to-one correspondence.

Preferably, the top of the movable annular screen plate extends out of the top of the crushing barrel, the top of the movable annular screen plate is connected with an annular sliding rail, sliding grooves are formed in two sides of an opening of the C-shaped plate, and the annular sliding rail is clamped in the sliding grooves.

Preferably, the top surface of the annular slide rail is a tooth surface, a notch is formed in the top surface of one C-shaped plate, bearing plates are arranged on the inner plate and the outer ring, a driven shaft is arranged between the bearing plates, a first gear is arranged on the driven shaft and located in the notch, and the first gear is meshed with the tooth surface of the annular slide rail.

Preferably, the driving shaft extends out of the top of the crushing barrel and is connected with a first toothed ring, the inner plate is connected with a second toothed ring in a sliding mode, the second toothed ring is arranged on the outer ring of the first toothed ring and is in meshing transmission with the first toothed ring through a plurality of second gears, the second gears are connected to shafts fixed on the inner plate, the top surface of the second toothed ring is provided with partial teeth, one end of the driven shaft extends to the position above the second toothed ring and is connected with a third gear, and the third gear is meshed with the partial teeth on the top surface of the second toothed ring and is separated from other parts on the top surface of the second toothed ring.

Has the advantages that:

according to the invention, the wood is transversely placed in the crushing barrel, fed from the upper part and discharged from the side part, the wood enters the outer layer through the movable annular net plate under the action of centrifugal force after being crushed, the fixed pipe is pressed downwards, the telescopic rod is contracted, the compression spring is pressed downwards, the corrugated pipe is tightened, the whole feeding pipe is in a downward pressing trend, the wood clamped in the feeding pipe is pressed downwards and fed into the crushing barrel, the hand is always out, the device is safe and convenient, and the wood in the feeding pipe can be quickly cleaned.

Description of the drawings:

in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and 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;

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a view showing the inner structure of a milling drum according to the present invention;

FIG. 4 is a structural view of a movable circular net plate of the present invention;

FIG. 5 is a schematic view of the C-shaped plate of the present invention without notches;

FIG. 6 is a schematic view of a slotted C-shaped plate structure of the present invention;

FIG. 7 is a structural view of embodiment 3 of the present invention;

in the drawings are labeled: 1-a crushing cylinder; 2-a scaffold; 3-moving the annular net plate; 4-an inner layer; 5-an outer layer; 6, a motor; 7-driving shaft; 8-rotating the blade; 9-feeding pipe; 10-a discharge pipe; 11-an inner plate; 12-an outer ring; 13-C type plates; 14-a stirring rod; 15-fixing the annular net plate; 16-an annular slide rail; 17-a chute; 18-notches; 19-a bearing plate; 20-a driven shaft; 21-a first gear; 22-a first toothed ring; 23-a second toothed ring; 24-a second gear; 25-a third gear; 26-a fixed tube; 27-a bellows; 28-transverse plate; 29-a telescopic rod; 30-compression spring.

The specific implementation mode is as follows:

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.

Example 1: referring to fig. 1, the present invention provides a wood crushing mechanism with a transverse arrangement for a feeding pipe 9, which is characterized in that: including the horizontal crushing barrel 1 of placing, 1 bottom of crushing barrel is equipped with support 2, be equipped with activity annular otter board 3 in the crushing barrel 1, activity annular otter board 3 divide into inner layer 4 and skin 5 with crushing barrel 1, 1 bottom center of crushing barrel is equipped with motor 6, be equipped with driving shaft 7 in the crushing barrel 1, driving shaft 7 passes through the drive of motor 6, be equipped with spinning blade 8 on the driving shaft 7, spinning blade 8 is located inner layer 4, be equipped with inlet pipe 9 on the inner panel 11 of crushing barrel 1, feed pipe 9 and crushing barrel are interior to be linked together, 1 lateral wall of crushing barrel is equipped with the opening, and the opening part is equipped with discharging pipe 10, inlet pipe 9 divide into both ends structure, including fixed pipe 26 and bellows 27, fixed pipe 26 bottom is connected with bellows 27 top, bellows 27 bottom with crushing barrel 1 connects. The side wall of the fixed pipe 26 is connected with a transverse plate 28, an expansion link 29 is connected between the transverse plate 28 and the inner plate 11, and a compression spring 30 is sleeved on the expansion link 29. Increase the apron on inlet pipe 9, push down fixed pipe 26, the apron pushes down simultaneously, extrudees timber and gets into crushing barrel 1 in, avoids rotary blade 8 to personnel's injury.

Example 2: in the actual work, in the kibbling equipment of timber, the rubbing crusher is mostly vertical crushing, and the feed inlet is last, and the discharge gate is under, smashes the ejection of compact on one side, and this kind of scheme is too simple, and smashes the degree of consistency and can not satisfy the requirement, needs to smash many times. In view of the above, in the prior art, a filter screen is additionally arranged at the bottom of the wood smashing mechanism, so that the wood smashing mechanism can pass through the filter screen only when the wood smashing mechanism meets the requirement, a large amount of wood chippings are accumulated under the condition that a distance is left between an outer cylinder and a smashing knife, the wood chippings are different from granular raw materials and are easy to block, and under the condition that the distance between the outer cylinder and the smashing knife is extremely small, no space is provided for the flow of the wood chippings which can pass through the filter screen, as shown in fig. 2-6, the wood smashing mechanism comprises a transversely arranged smashing cylinder 1, a support is arranged at the bottom of the smashing cylinder 1, a movable annular screen plate 3 is arranged in the smashing cylinder 1, the smashing cylinder 1 is divided into an inner layer 4 and an outer layer 5 by the movable annular screen plate 3, a motor is arranged at the center of the bottom of the smashing cylinder 1, a driving shaft 7 is arranged in the smashing cylinder 1 and is driven by the motor, and a rotary blade 8 is arranged on the driving shaft 7, the utility model discloses a crushing barrel, including a crushing barrel 1, a rotary blade 8, an inlet pipe 9, an opening, a discharging pipe 10, an inner plate 11 and an outer ring 12, an outer ring 12 and a crushing barrel 1 lateral wall body structure, the crushing barrel 1 lateral wall is equipped with the opening, and the opening part is equipped with discharging pipe 10, crushing barrel 1 top barrel divides into, outer lane 12 and crushing barrel 1 lateral wall body structure, inner plate 11 is connected through a plurality of C template with outer lane 12, the opening of C template is down, leave the clearance between inner plate 11 and outer lane 12, form the round ring channel, activity ring otter board 3 inserts in the ring channel, activity ring otter board 3 lateral wall is connected with stirring rod 14, stirring rod 14 is located skin 5, crushing barrel 1 in be equipped with fixed ring otter board 15, fixed ring otter board 15 hugs closely with activity ring otter board 3, the mesh of fixed ring otter board 15 is the same with the mesh size of activity ring otter board 3, and are in one-to-one correspondence.

According to the invention, the smashing cylinder 1 which is transversely placed is fed from the upper part and discharged from the side part, wood is smashed and then enters the outer layer 5 through the movable annular screen plate 3 under the action of centrifugal force, because the distance between the rotary blade 8 and the movable annular screen plate 3 is small, the wood on the inner side of the movable annular screen plate 3 cannot be accumulated and is continuously cut and smashed by the rotary blade 8 until the wood can pass through the movable annular screen plate 3, the movable annular screen plate 3 is rotated, the stirring rod 14 on the movable annular screen plate 3 is utilized to drive the wood chips on the outer layer 5 to be carried to the discharge hole for discharging, and the discharging is uniform. Fixed annular otter board 15 hugs closely with activity annular otter board 3 to the mesh size is the same, and under the relative condition of mesh, does not influence the passing through of garrulous saw-dust, and under the 3 pivoted condition of activity annular otter board, the mesh of activity annular otter board 3 and fixed annular otter board 15 constantly intersects, can cut the long garrulous saw-dust of card in the mesh, and the long garrulous saw-dust of avoiding the diameter to pass through, and the reinforcing passes through the homogeneity of garrulous saw-dust.

The top of the movable annular screen plate 3 extends out of the top of the crushing barrel 1, the top of the movable annular screen plate 3 is connected with an annular slide rail 16, sliding grooves 17 are formed in two sides of an opening of the C-shaped plate, and the annular slide rail 16 is clamped in the sliding grooves 17. The top surface of the annular slide rail 16 is a tooth surface, a notch 18 is formed in the top surface of one C-shaped plate, bearing plates 19 are arranged on the inner plate 11 and the outer ring 12, a driven shaft 20 is arranged between the bearing plates 19, a first gear 21 is arranged on the driven shaft 20, and the first gear 21 is located in the notch 18 and meshed with the tooth surface of the annular slide rail 16.

Can realize the rotation of artificial control activity annular otter board 3, the ejection of compact of the shredded wood bits of steerable outer 5 on the one hand, on the other hand can control the mesh crossing opportunity and the speed of activity annular otter board 3 and fixed annular otter board 15.

The driving shaft 7 extends out of the crushing cylinder 1 top and is connected with a first toothed ring 22, sliding connection has a second toothed ring 23 on the inner plate 11, the second toothed ring 23 is in a first toothed ring 22 outer ring 12, the second toothed ring 23 and the first toothed ring 22 are in meshing transmission through a plurality of second gears 24, the second gears 24 are connected on the shaft fixed on the inner plate 11, the top surface of the second toothed ring 23 is provided with partial teeth, one end of the driven shaft 20 extends to the upper part of the second toothed ring 23 and is connected with a third gear 25, the third gear 25 is in meshing engagement with the partial teeth on the top surface of the second toothed ring 23 and is separated from other parts on the top surface of the second toothed ring 23.

The automatic control of the discharge of the wood chips on the outer layer 5 and the control of the mesh crossing time and speed of the movable annular mesh plate 3 and the fixed annular mesh plate 15 are realized. In the present invention, the reduction is performed by the ring gear and the gear. More importantly, the synchronous mechanism of the invention realizes that the movable annular screen plate 3 and the fixed annular screen plate 15 are intermittently crossed by the driven shaft 20 under the continuous rotation of the driving shaft 7, so that the time for passing the wood chips is reserved, and the wood chips clamped on the meshes are cut off.

Example 3: as shown in fig. 1-5 and 7, the invention provides a transversely arranged wood crushing mechanism, which comprises a crushing cylinder 1 which is transversely arranged, wherein a support 2 is arranged at the bottom of the crushing cylinder 1, a movable annular screen plate 3 is arranged in the crushing cylinder 1, the movable annular screen plate 3 divides the crushing cylinder 1 into an inner layer 4 and an outer layer 5, a motor 6 is arranged at the center of the bottom of the crushing cylinder 1, a driving shaft 7 is arranged in the crushing cylinder 1, the driving shaft 7 is driven by the motor 6, a rotary blade 8 is arranged on the driving shaft 7, the rotary blade 8 is positioned on the inner layer 4, a feeding pipe 9 is arranged on the crushing cylinder 1, the feeding pipe 9 is communicated with the inside of the crushing cylinder 1, an opening is formed in the side wall of the crushing cylinder 1, and a discharging pipe 10 is arranged at the opening.

The utility model discloses a crushing barrel, including crushing barrel 1, inner panel 11 and outer lane 12, outer lane 12 and 1 lateral wall body structure of crushing barrel, inner panel 11 is connected through a plurality of C templates with outer lane 12, the opening of C template is down, leave the clearance between inner panel 11 and the outer lane 12, form the round ring channel, activity annular otter board 3 is inserted in the ring channel, 3 lateral walls of activity annular otter board are connected with stirring rod 14, stirring rod 14 is located skin 5.

The crushing barrel 1 is internally provided with a fixed annular screen plate 15, the fixed annular screen plate 15 is tightly attached to the movable annular screen plate 3, and meshes of the fixed annular screen plate 15 are the same as meshes of the movable annular screen plate 3 in size and are in one-to-one correspondence.

The top of the movable annular screen plate 3 extends out of the top of the crushing barrel 1, the top of the movable annular screen plate 3 is connected with an annular slide rail 16, sliding grooves 17 are formed in two sides of an opening of the C-shaped plate, and the annular slide rail 16 is clamped in the sliding grooves 17.

The top surface of the annular slide rail 16 is a tooth surface, a notch 18 is formed in the top surface of one C-shaped plate, bearing plates 19 are arranged on the inner plate 11 and the outer ring 12, a driven shaft 20 is arranged between the bearing plates 19, a first gear 21 is arranged on the driven shaft 20, and the first gear 21 is located in the notch 18 and meshed with the tooth surface of the annular slide rail 16.

The driving shaft 7 extends out of the crushing cylinder 1 top and is connected with a first toothed ring 22, sliding connection has a second toothed ring 23 on the inner plate 11, the second toothed ring 23 is in a first toothed ring 22 outer ring 12, the second toothed ring 23 and the first toothed ring 22 are in meshing transmission through a plurality of second gears 24, the second gears 24 are connected on the shaft fixed on the inner plate 11, the top surface of the second toothed ring 23 is provided with partial teeth, one end of the driven shaft 20 extends to the upper part of the second toothed ring 23 and is connected with a third gear 25, the third gear 25 is in meshing engagement with the partial teeth on the top surface of the second toothed ring 23 and is separated from other parts on the top surface of the second toothed ring 23.

Inlet pipe 9 divide into the both ends structure, including fixed pipe 26 and bellows 27, fixed pipe 26 bottom is connected with bellows 27 top, bellows 27 bottom with inner panel 11 is connected.

The side wall of the fixed pipe 26 is connected with a transverse plate 28, an expansion link 29 is connected between the transverse plate 28 and the inner plate 11, and a compression spring 30 is sleeved on the expansion link 29.

The working principle is as follows: the motor 6 is started to drive the driving shaft 7 to rotate, the rotary blade 8 rotates along with the driving shaft, wood is fed from the feeding pipe 9, and the wood sinks under the action of gravity and is cut and crushed by the rotary blade 8 below the feeding pipe 9 continuously.

The wood sinks continuously, but the wood is easy to be clamped in the feeding pipe 9, the wood needs to be fed manually, but the rotary blade 8 is arranged below the feeding pipe 9, the wood is directly fed into danger manually, on the contrary, the fixed pipe 26 is pressed downwards, the telescopic rod 29 is contracted, the compression spring 30 is pressed downwards, the corrugated pipe 27 is tightened, the whole feeding pipe 9 tends to be pressed downwards, the wood clamped in the feeding pipe 9 is pressed downwards into the crushing barrel 1, and the hand is always out, so that the wood feeding device is safe.

After wood enters the crushing barrel 1, under the action of the rotary blade 8, the wood is continuously crushed, the wood chips enter the outer layer 5 through the fixed annular screen plate 15 and the movable annular screen plate 3, and the wood chips which cannot pass through are continuously cut and crushed until the wood chips can pass through.

The driving shaft 7 rotates to drive the first gear ring 22 to rotate, the second gear ring 23 is driven to rotate through meshing transmission of the second gear 24, part of teeth on the second gear ring 23 drive the third gear 25 to rotate, only part of teeth exist on the second gear ring 23, the third gear 25 intermittently rotates, the third gear 25 drives the driven shaft 20 to rotate, the driven shaft 20 drives the first gear 21 to rotate, the first gear 21 is meshed with teeth on the top surface of the annular slide rail 16 at the top of the movable annular screen plate 3, the first gear 21 drives the annular slide rail 16 to rotate, the annular slide rail 16 rotates in the chute 17 of the C-shaped plate, and due to intermittent rotation of the driven shaft 20, the third gear 25 drives the annular slide rail 16 intermittently rotates, and the movable annular screen plate 3 intermittently rotates.

The intermittent rotation's movable annular otter board 3 drives stirring rod 14, takes the shredded wood bits to discharging pipe 10, and driven shaft 20 is intermittent rotation, and this just realizes that movable annular otter board 3 and the mesh intermittent type of fixed annular otter board 15 are alternately, leaves the opportunity that the shredded wood bits passed through, cuts off the shredded wood bits of card on the mesh again simultaneously.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.