阅读说明：本技术 一种谷物板结清理机 (Grain plate knot cleaning machine ) 是由 曹凯宇 曹云飞 于 2019-09-27 设计创作，主要内容包括：本发明公开一种谷物板结清理机,包括机体外壳,所述机体外壳的底部一侧安装有活动卡座,且机体外壳的顶部中间安装有电机座,所述电机座的顶部安装有第一电机,所述第一电机的底部贯穿电机座与机体外壳的上下端安装有搅拌轴,所述搅拌轴的外部焊接有螺旋叶片,所述机体外壳的顶部靠电机座的一侧安装有操控把手,贯穿所述机体外壳的一侧设置有出料管；本发明一种谷物板结清理机能够有效的对谷物板结处进行打散操作,且在调整操作角度时较为方便,省去了对机器进行换位的麻烦,在打散操作结束之后,可以对谷物进行吸附转移,功能多样,且出料管采用卡接的方式进行安装,在安装时较为方便,并且可以拆卸,具有较好的使用效果。(The invention discloses a grain slab knot cleaning machine which comprises a machine body shell, wherein a movable clamping seat is installed on one side of the bottom of the machine body shell, a motor base is installed in the middle of the top of the machine body shell, a first motor is installed on the top of the motor base, a stirring shaft is installed on the bottom of the first motor and penetrates through the motor base and the upper end and the lower end of the machine body shell, a spiral blade is welded outside the stirring shaft, a control handle is installed on one side, close to the motor base, of the top of the machine body shell, and a discharging pipe is arranged on one side penetrating through the machine body shell; the grain slab knot cleaning machine can effectively break up grain hardened parts, is convenient to adjust the operation angle, saves the trouble of changing the position of the machine, can adsorb and transfer grains after breaking up, has various functions, is convenient to install and detachable, and has a good use effect.)

1. The grain slab knot cleaning machine is characterized by comprising a machine body shell (1), wherein a movable clamping seat (2) is installed on one side of the bottom of the machine body shell (1), a motor base (3) is installed in the middle of the top of the machine body shell (1), a first motor (4) is installed on the top of the motor base (3), the bottom of the first motor (4) penetrates through the motor base (3) and the upper end and the lower end of the machine body shell (1) and is provided with a stirring shaft (5), spiral blades (6) are welded outside the stirring shaft (5), a control handle (7) is installed on one side, close to the motor base (3), of the top of the machine body shell (1), and a discharging pipe (8) is arranged on one side penetrating through the machine body shell (1);

a clamping plate (9) is installed at the rear end of the machine body shell (1), a supporting plate (10) is connected to one end of the clamping plate (9), and a second motor (11) is installed at the bottom of the supporting plate (10);

a grain suction pipe (12) is welded inside the stirring shaft (5), one end of the grain suction pipe (12) is connected with a clamping joint (13), one end of the clamping joint (13) penetrates through the side wall of the grain suction pipe (12), the discharge pipe (8) comprises an outer sleeve (14), and the grain guide pipe (15) is arranged in the outer sleeve (14), one end of the grain guide pipe (15) is connected with a fixed shell (16), and one end of the fixed shell (16) far away from one end of the grain guide pipe (15) is provided with a butt joint pipe (19), one end of the butt joint pipe (19) far away from the fixed shell (16) is clamped with one end of the clamping joint (13), a sealing ring (20) is sleeved at the joint of the outer part of one end of the butt joint pipe (19) and one end of the clamping joint (13), a driving disc (17) is arranged in the fixed shell (16), and a plurality of groups of steel blades (18) are equidistantly arranged on the periphery of the driving disk (17);

activity cassette (2) include first splint (21) and second splint (22), first splint (21) and second splint (22) parallel arrangement, and the relative lateral wall of first splint (21) and second splint (22) all is connected with sector plate (23), runs through the lateral wall of first splint (21), second splint (22) and sector plate (23) is connected with damping pivot (24), the bottom welding of sector plate (23) has U type seat (25).

2. The grain plate knot cleaning machine according to claim 1, characterized in that the other side of the machine body shell (1) is arranged in an inclined shape, and the top surface of the machine body shell (1) is welded with the joint of the bottom of the motor base (3).

3. The grain slab knot cleaning machine according to claim 1, characterized in that the control handle (7) is arranged in a T shape, the outer part of the control handle (7) comprises a layer of rubber sleeve, and a plurality of groups of wave-shaped grains are arranged on the outer part of the rubber sleeve.

4. The grain plate knot cleaning machine as claimed in claim 1, characterized in that the top of the first clamping plate (21) and the second clamping plate (22) are welded with the bottom of the machine body shell (1), and the movable clamping seat (2) is fixedly connected with the machine body shell (1) through the first clamping plate (21) and the second clamping plate (22).

5. The grain slab knot cleaning machine according to claim 1, characterized in that one end of the butt joint pipe (19) is arranged in a convex shape, the joint between one end of the clamping joint (13) and one end of the butt joint pipe (19) is arranged in a concave shape, and the discharging pipe (8) is clamped with the clamping joint (13) through the butt joint pipe (19).

6. The grain plate cleaning machine according to claim 1, wherein the position of the driving plate (17) corresponds to the position of the second motor (11) in a front-back manner, and one end of the second motor (11) penetrates through the outer wall of the clamping plate (9) and is provided with a rotating shaft connected with one end of the driving plate (17).

7. The grain board knot cleaner of claim 1, wherein the grain board knot cleaner is used in the following steps:

the method comprises the following steps: fixing a machine body shell (1) on the top edge of a grain storage container to be cleaned through a movable clamping seat (2), clamping a U-shaped seat (25) on the top edge of the storage container, and penetrating a damping rotating shaft (24) among a first clamping plate (21), a second clamping plate (22) and a sector plate (23);

step two; the control handle (7) is pulled, the control handle (7) drives the machine body shell (1) to swing, the machine body shell (1) rotates on the damping rotating shaft (24) through the first clamping plate (21) and the second clamping plate (22) to adjust the inclination, the adjustment of the inclination of the machine body shell (1) is completed, and the bottom end of the rotating shaft (5) is aligned to the position of hardened grains to be cleaned;

step three: starting a first motor (4), driving a stirring shaft (5) to rotate by the first motor (4), driving a helical blade (6) to rotate by the stirring shaft (5) to break up the hardened part of the grains, pulling an operation handle (7) to swing a motor body shell (1) after cleaning one part, driving the stirring shaft (5) to incline by the motor body shell (1), adjusting the angle of the stirring shaft (5), and starting the first motor (4) again to drive the stirring shaft (5) to rotate to break up the grains;

step four: after the hardened parts of grains are completely cleaned, the first motor (4) is closed, the stirring shaft (5) is rotated, one end of the clamping joint (13) is aligned to one side of the machine body shell (1), the discharge pipe (8) is sleeved into the machine body shell (1) from one side of the machine body shell, the butt joint pipe (19) is aligned to the clamping joint (13) and inserted, the second motor (11) is started, the second motor (11) drives the driving disc (17) inside the fixed shell (16) to rotate through the rotating shaft, the driving disc (17) drives the steel blades (18) to rotate, air is sent out from one end of the grain guide pipe (15), grains below the stirring shaft are sucked into the grain suction pipe (12), enter the grain guide pipe (15) through the fixed shell (16), and are finally sent out from one end of the grain guide pipe (15), and grain transfer operation is completed.

Technical Field

The invention belongs to the field of grain processing, and particularly relates to a cleaning machine, in particular to a grain plate knot cleaning machine.

Background

When storing up cereal, receive the interference of factors such as moisture in the air, often can lead to appearing hardened phenomenon between the cereal to lead to the later stage when adding man-hour to cereal, influence the processing of cereal easily, consequently need utilize the board knot descaling machine to break up the operation to the cereal of board knot department, hardened descaling machine utilizes the (mixing) shaft to stir cereal, thereby plays the effect of breaking up.

The existing grain plate knot cleaning machine has certain disadvantages when in use, and the inclination of a stirring shaft of the existing grain plate knot cleaning machine is basically fixed and unadjustable when in use, so that the machine needs to be frequently replaced when different hardened parts are cleaned; the existing grain plate knot cleaning machine has single function, only can clean hardened parts, does not have other functions, cannot transfer grains, and brings certain influence on actual use.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a grain plate knot cleaning machine which can effectively solve the problem that when the existing grain plate knot cleaning machine is used, the inclination of a stirring shaft of the existing grain plate knot cleaning machine is basically fixed and not adjustable, so that the position of the machine needs to be frequently replaced when different hardened parts are cleaned; the existing grain plate knot cleaning machine has a single function, only can clean hardened parts, does not have other functions, and cannot transfer grains.

The purpose of the invention can be realized by the following technical scheme:

a grain slab knot cleaning machine comprises a machine body shell, wherein a movable clamping seat is installed on one side of the bottom of the machine body shell, a motor base is installed in the middle of the top of the machine body shell, a first motor is installed on the top of the motor base, a stirring shaft is installed on the bottom of the first motor, penetrates through the motor base and the upper end and the lower end of the machine body shell, a spiral blade is welded outside the stirring shaft, a control handle is installed on one side, close to the motor base, of the top of the machine body shell, and a discharging pipe is arranged on one side, penetrating through the machine body shell;

a clamping plate is arranged at the rear end of the machine body shell, one end of the clamping plate is connected with a supporting plate, and a second motor is arranged at the bottom of the supporting plate;

the grain suction pipe is welded in the stirring shaft, one end of the grain suction pipe is connected with a clamping joint, one end of the clamping joint penetrates through the side wall of the grain suction pipe, the discharging pipe comprises an outer pipe sleeve, a grain guide pipe is arranged in the outer pipe sleeve, one end of the grain guide pipe is connected with a fixed shell, one end of the fixed shell, far away from the grain guide pipe, is provided with a butt joint pipe, one end, far away from the fixed shell, of the butt joint pipe is clamped with one end of the clamping joint, a sealing ring is sleeved at the joint of the outer part of one end of the butt joint pipe and one end of the clamping joint, a driving disc is installed in the fixed shell, and a plurality of groups of steel blades are installed on the periphery of the;

the movable clamping seat comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are arranged in parallel, opposite side walls of the first clamping plate and the second clamping plate are connected with sector plates, the sector plates penetrate through the side walls of the first clamping plate, the second clamping plate and the sector plates and are connected with damping rotating shafts, and U-shaped seats are welded at the bottoms of the sector plates.

As a further scheme of the invention: the other side of the machine body shell is arranged in an inclined manner, and the top surface of the machine body shell is welded with the joint of the bottom of the motor base.

As a further scheme of the invention: control the handle and be the setting of T style of calligraphy, and control the outside of handle including the one deck rubber sleeve, the outside of rubber sleeve is provided with a plurality of groups of wave type lines.

As a further scheme of the invention: the top of first splint and second splint all welds with engine body shell's bottom, and movable block passes through first splint and second splint and engine body shell fixed connection.

As a further scheme of the invention: the one end of butt joint pipe is outer convex setting, the one end of joint head is concave setting with the one end looks joint department of butt joint pipe, the discharging pipe is through butt joint pipe and joint head looks joint.

As a further scheme of the invention: the position of the driving disc corresponds to the position of the second motor in the front-back direction, and one end of the second motor penetrates through the outer wall of the clamping plate and is provided with a rotating shaft connected with one end of the driving disc.

As a further scheme of the invention: the grain board knot cleaning machine body has the following use steps:

the method comprises the following steps: fixing a machine body shell on the top edge of a grain storage container to be cleaned through a movable clamping seat, clamping a U-shaped seat on the top edge of the storage container, and penetrating a damping rotating shaft among a first clamping plate, a second clamping plate and a sector plate;

step two; the control handle is pulled, the control handle drives the machine body shell to swing, the machine body shell rotates on the damping rotating shaft through the first clamping plate and the second clamping plate to adjust the inclination, the adjustment of the inclination of the machine body shell is completed, and the bottom end of the rotating shaft is aligned to the position of hardened grains to be cleaned;

step three: starting a first motor, driving a stirring shaft to rotate by the first motor, driving a helical blade to rotate by the stirring shaft to break up the hardened part of the grains, pulling a control handle to swing a motor body shell after cleaning one part, driving the stirring shaft to incline by the motor body shell, adjusting the angle of the stirring shaft, and starting the first motor again to drive the stirring shaft to rotate to break up the grains;

step four: and after the hardened part of the grains is completely cleaned, closing the first motor, rotating the stirring shaft to enable one end of the clamping joint to be aligned to one side of the machine body shell, sleeving the discharging pipe into the machine body shell from one side of the machine body shell, aligning the butt joint pipe to the clamping joint and inserting the butt joint pipe, starting the second motor, driving a driving disc inside the fixed shell to rotate through a rotating shaft by the second motor, driving steel blades to rotate by the driving disc, sending air out from one end of the grain guide pipe, sucking the grains below the stirring shaft into the grain suction pipe, entering the grain guide pipe through the fixed shell, and finally sending out from one end of the grain guide pipe to finish grain transfer operation.

The invention has the beneficial effects that:

1. according to the invention, the movable clamping seat is arranged on one side of the bottom of the machine body shell, when the whole plate knot cleaning machine is fixed, the U-shaped seat can be fixed through the machine body shell only by erecting the U-shaped seat arranged on the movable clamping seat on the top edge of the grain container, when the inclination of the stirring shaft is adjusted, the machine body shell is driven to swing by using the control handle only by pulling the control handle, the machine body shell rotates on the damping rotating shaft through the first clamping plate and the second clamping plate to adjust the inclination, the adjustment of the inclination of the machine body shell is completed, and then the inclination of the stirring shaft and the first motor can be driven to incline by using the machine body shell, so that the inclination of the stirring shaft can be flexibly adjusted, the machine is suitable for cleaning different hardened grain parts, and the trouble of changing the position of the whole machine is omitted;

2. the grain suction pipe is arranged in the stirring shaft and matched with the discharging pipe arranged in the machine body shell, the butt joint pipe on the discharging pipe is aligned to the clamping joint and inserted, the sealing ring is arranged outside one end of the butt joint pipe to play a sealing role, the second motor is started, the clamping plate fixes the second motor, the supporting plate supports the second motor, the second motor drives the driving disc in the fixed shell to rotate through the rotating shaft, the driving disc drives the steel blades to rotate, air is sent out from one end of the grain guide pipe, grains below the stirring shaft are sucked into the grain suction pipe and enter the grain guide pipe through the fixed shell, and finally the grains are sent out from one end of the grain guide pipe, so that the grain transfer operation can be carried out, and the function of the machine is more diversified;

3. the mode of being connected through setting up butt joint pipe and joint looks joint is connected, and the tip of butt joint pipe is outer convex, and the tip of joint is interior concavity to can make things convenient for butt joint pipe and joint to be connected fixedly, and then make can freely dismouting between discharging pipe and the joint, when carrying out cereal board knot clearance, can not cause the interference to the work of (mixing) shaft, convenience more when using.

Drawings

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

FIG. 1 is an elevational view of a grain panel scarifier of the present invention.

FIG. 2 is a rear view of a body shell in a grain panel scarifier of the present invention.

FIG. 3 is a cross-sectional view of a grain panel scarifier according to the present invention.

FIG. 4 is a connection diagram of a discharge pipe and a grain suction pipe in the grain plate knot cleaning machine of the invention.

FIG. 5 is a structural view of a movable clamp seat in the grain plate knot cleaning machine of the invention.

In figure 1, a machine body shell; 2. a movable card holder; 3. a motor base; 4. a first motor; 5. a stirring shaft; 6. a helical blade; 7. a control handle; 8. a discharge pipe; 9. clamping a plate; 10. a support plate; 11. a second motor; 12. a grain suction pipe; 13. a clamping head; 14. an outer pipe sleeve; 15. a grain guide pipe; 16. fixing the housing; 17. a drive disc; 18. a steel blade; 19. butt-joint pipes; 20. a seal ring; 21. a first splint; 22. a second splint; 23. a sector plate; 24. a damping rotating shaft; 25. a U-shaped seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

As shown in fig. 1-5, a grain slab knot cleaning machine comprises a machine body shell 1, wherein a movable clamping seat 2 is installed on one side of the bottom of the machine body shell 1, a motor base 3 is installed in the middle of the top of the machine body shell 1, a first motor 4 is installed on the top of the motor base 3, a stirring shaft 5 is installed on the bottom of the first motor 4, penetrates through the motor base 3 and the upper end and the lower end of the machine body shell 1, a spiral blade 6 is welded outside the stirring shaft 5, an operating handle 7 is installed on one side, close to the motor base 3, of the top of the machine body shell 1, a discharging pipe 8 is arranged on one side, penetrating through the machine body shell 1, and the discharging pipe 8 is used for discharging;

a clamping plate 9 is installed at the rear end of the machine body shell 1, a supporting plate 10 is connected to one end of the clamping plate 9, a second motor 11 is installed at the bottom of the supporting plate 10, the clamping plate 9 fixes the second motor 11, and the supporting plate 10 supports the second motor 11;

a grain suction pipe 12 is welded inside the stirring shaft 5, one end of the grain suction pipe 12 is connected with a clamping joint 13, one end of the clamping joint 13 penetrates through the side wall of the grain suction pipe 12, the discharge pipe 8 comprises an outer sleeve 14, and the grain guide pipe 15 is arranged in the outer sleeve 14, one end of the grain guide pipe 15 is connected with a fixed shell 16, and one end of the fixed shell 16, which is far away from the grain guide pipe 15, is provided with a butt joint pipe 19, one end of the butt joint pipe 19 far away from the fixed shell 16 is clamped with one end of the clamping joint 13, a sealing ring 20 is sleeved at the joint of the outer part of one end of the butt joint pipe 19 and one end of the clamping joint 13, a driving disc 17 is arranged in the fixed shell 16, and a plurality of groups of steel blades 18 are equidistantly arranged on the periphery of the driving disk 17, the driving disk 17 drives the steel blades 18 to rotate, therefore, the grains at the bottom of the grain suction pipe 12 are sucked, the steel blades 18 have good shock resistance, and can avoid damage;

the movable clamping base 2 comprises a first clamping plate 21 and a second clamping plate 22, the first clamping plate 21 and the second clamping plate 22 are arranged in parallel, opposite side walls of the first clamping plate 21 and the second clamping plate 22 are connected with fan-shaped plates 23, side walls penetrating through the first clamping plate 21, the second clamping plate 22 and the fan-shaped plates 23 are connected with damping rotating shafts 24, the bottom of each fan-shaped plate 23 is welded with a U-shaped seat 25, and the U-shaped seats 25 are arranged to be convenient for fixing the machine body shell 1 and a grain storage container.

The opposite side of engine body shell 1 is the slope form setting, and the top surface of engine body shell 1 welds mutually with the bottom linking department of motor cabinet 3, adopts the welded mode to fix between engine body shell 1 and the motor cabinet 3, improves stability.

Control handle 7 and be the setting of T style of calligraphy, and control the outside of handle 7 including the one deck rubber sleeve, the outside of rubber sleeve is provided with a plurality of groups of wave type lines, and the setting of T style of calligraphy is convenient for take and hold, sets up the rubber sleeve and plays anti-skidding effect.

The tops of the first clamping plate 21 and the second clamping plate 22 are welded with the bottom of the machine body shell 1, and the movable clamping seat 2 is fixedly connected with the machine body shell 1 through the first clamping plate 21 and the second clamping plate 22.

The one end of butt joint pipe 19 is the setting of outer convex, and the one end of joint pipe 13 is the concave setting with the one end looks joint department of butt joint pipe 19, and discharging pipe 8 is through butt joint pipe 19 and joint 13 looks joint, sets up butt joint pipe 19 and joint 13 looks joint easy to assemble and dismantlement.

The position of the driving disk 17 corresponds to the position of the second motor 11, the outer wall of the clamping plate 9 is penetrated by one end of the second motor 11, a rotating shaft is arranged on the outer wall of the second motor and connected with one end of the driving disk 17, and the driving disk 17 is driven by the second motor 11 so as to drive the steel blade 18 to rotate.

A grain plate knot cleaning machine is characterized in that when in use, a machine body shell 1 is fixed at the top edge of a grain storage container to be cleaned through a movable clamping seat 2, a U-shaped seat 25 is clamped at the top edge of the storage container, a damping rotating shaft 24 penetrates through positions among a first clamping plate 21, a second clamping plate 22 and a sector plate 23, a control handle 7 is pulled, the machine body shell 1 is driven to swing by the control handle 7, the machine body shell 1 rotates on the damping rotating shaft 24 through the first clamping plate 21 and the second clamping plate 22 to adjust the inclination, the adjustment of the inclination of the machine body shell 1 is completed, the bottom end of the rotating shaft 5 is aligned to the position of hardened grains to be cleaned, a first motor 4 is started, the first motor 4 is fixed through a motor seat 3, the first motor 4 drives a stirring shaft 5 to rotate, the stirring shaft 5 drives a spiral blade 6 to rotate to break up the hardened grains, and after one part is cleaned, pulling the control handle 7 to swing the motor body shell 1, driving the stirring shaft 5 to incline through the motor body shell 1, adjusting the angle of the stirring shaft 5, starting the first motor 4 again to drive the stirring shaft 5 to rotate to break up the grains, closing the first motor 4 after the hardened grains are completely cleaned, rotating the stirring shaft 5 to enable one end of the clamping joint 13 to be aligned with one side of the motor body shell 1, sleeving the discharging pipe 8 into the clamping joint from one side of the motor body shell 1, aligning the butt joint pipe 19 with the clamping joint 13 and inserting the butt joint pipe 19, arranging the sealing ring 20 outside one end of the butt joint pipe 19 to play a sealing role, starting the second motor 11, fixing the clamping plate 9 on the second motor 11, supporting the second motor 11 by the supporting plate 10, driving the driving disc 17 inside the fixed shell 16 to rotate by the rotating shaft of the second motor 11, driving the steel blades 18 to rotate by the driving disc 17, sending out air from one end of the grain guide pipe 15, the grains below the stirring shaft are sucked into the grain sucking pipe 12, enter the grain guide pipe 15 through the fixed shell 16, and are finally sent out from one end of the grain guide pipe 15, so that the grain transferring operation is completed.

In the invention, the movable clamping seat 2 is arranged at one side of the bottom of the machine body shell 1, when the whole board knot cleaning machine is fixed, the U-shaped seat 25 can be fixed through the machine body shell 1 only by erecting the U-shaped seat 25 arranged on the movable clamping seat 2 on the top edge of the grain container, when the inclination of the stirring shaft 5 is adjusted, only the control handle 7 needs to be pulled, the control handle 7 is utilized to drive the machine body shell 1 to swing, the machine body shell 1 rotates on the damping rotating shaft 24 through the first clamping plate 21 and the second clamping plate 22 to adjust the inclination, the adjustment of the inclination of the machine body shell 1 is completed, so that the machine body shell 1 can be used for driving the inclination of the stirring shaft 5 and the first motor 4 to incline, therefore, the inclination of the stirring shaft 5 can be flexibly adjusted, the device is suitable for cleaning different hardened grains, and the trouble of changing the position of the whole machine is avoided; a grain suction pipe 12 is arranged in a stirring shaft 5 and is matched with a discharge pipe 8 arranged in a machine body shell 1, a butt joint pipe 19 on the discharge pipe 8 is aligned with a clamping joint 13 and inserted, a sealing ring 20 is arranged outside one end of the butt joint pipe 19 and plays a role in sealing, a second motor 11 is started, a clamping plate 9 fixes the second motor 11, a supporting plate 10 supports the second motor 11, the second motor 11 drives a driving plate 17 in a fixed shell 16 to rotate through a rotating shaft, the driving plate 17 drives steel blades 18 to rotate, air is sent out from one end of a grain guide pipe 15, grains below the stirring shaft 5 are sucked into the grain suction pipe 12 and enter the grain guide pipe 15 through the fixed shell 16, and finally the grains are sent out from one end of the grain guide pipe 15, so that grain transfer operation can be carried out, and the machine has more diversified functions; be connected through the mode that sets up butt joint pipe 19 and joint 13 looks joint, the tip of butt joint pipe 19 is outer convex, and joint 13's tip is interior concavity to can conveniently be connected fixedly to butt joint pipe 19 and joint 13, and then make can freely dismouting between discharging pipe 8 and the joint 13, when carrying out cereal board knot clearance, can not cause the interference to the work of (mixing) shaft 5, convenience more when using.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.