Water and fertilizer integrated drip irrigation system based on intelligent agriculture
Technical Field
The invention belongs to the technical field of water and fertilizer drip irrigation, and particularly relates to a water and fertilizer integrated drip irrigation system based on intelligent agriculture.
Background
Wisdom agriculture is the wisdom economy in agriculture, or the concrete manifestation of wisdom economy modalities in agriculture. Wisdom agriculture is an important component of wisdom economy, and for developing countries, wisdom agriculture is a main component of wisdom economy, is the main way that developing countries eliminate poverty, realize the advantage of sending after, the economy development comes and stays late, realizes overtaking the strategy. Wisdom agriculture is to use internet of things to traditional agriculture, and application sensor and software control agricultural production through mobile platform or computer platform, make traditional agriculture more have wisdom. In addition to accurate sensing, control and decision management, the intelligent agriculture also comprises contents in aspects of agricultural electronic commerce, food source tracing and anti-counterfeiting, agricultural leisure travel, agricultural information service and the like in a broad sense. On using irrigation equipment with wisdom agricultural, can accelerate production speed, practice thrift manpower and material resources, bring better result of use. In the agricultural planting process, irrigation equipment is needed for irrigation and fertilization, irrigation water can be pressurized through a water pump, the natural fall of a high-water-level water source can also be utilized, and a drip irrigation pipeline is blocked easily if sundries exist in the water. In addition, the solid fertilizer can also cause the problem of water inlet blockage of No. two and the problem of inconsistent solubility before and after drip irrigation due to untimely dissolution when being fused with water.
Some technical schemes related to drip irrigation devices also appear in the prior art, for example, a chinese patent with application number CN201921177306.9 discloses a simple anti-congestion type water and fertilizer integrated drip irrigation device, which comprises a water and fertilizer tank, a conveying pipeline and a drip irrigation belt; the water fertilizer box is communicated with the drip irrigation belt through a conveying pipeline; a liquid outlet hole is arranged on the drip irrigation belt; the liquid outlet hole is provided with a permeable stone.
Although the technology solves the problem of blockage of the liquid outlet hole by arranging the permeable stone; however, the blockage of the first water inlet, the second water inlet and the drip irrigation pipe is easily caused when the solid fertilizer is not completely dissolved, and meanwhile, when the fertilizer is not completely melted, the solution flows out from the first water inlet and the second water inlet, so that the concentration of the mixed solution flowing out before and after drip irrigation is inconsistent, and the growth of crops is influenced.
Disclosure of Invention
In order to make up for the defects of the prior art, the water-fertilizer integrated drip irrigation system based on intelligent agriculture is provided, and the problems that a first water inlet, a second water inlet and a drip irrigation pipe are easily blocked when solid fertilizer is not completely dissolved, and meanwhile, when the fertilizer is not completely melted, solution flows out from the first water inlet and the second water inlet, so that the concentration of mixed solution flowing out before and after drip irrigation is inconsistent, and the growth of crops is affected are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the water and fertilizer integrated drip irrigation system based on the intelligent agriculture comprises a stirring device, a pump and a drip irrigation pipe, wherein the stirring device is used for stirring and mixing water and fertilizer and then carrying out drip irrigation; the stirring device comprises a controller, a first water inlet, a feed inlet, a mixing tank, a second water inlet, a first driving motor, a rotating shaft, a stirring module and a rotating module; the stirring module comprises a crushing blade, a stirring rod and a stirring block; the first driving motor is fixedly arranged at one end of the mixing tank and is rotationally connected with the rotating shaft; a first water inlet, a feed inlet and a second water inlet are formed above the mixing tank, the first water inlet and the feed inlet are formed in one end close to the first driving motor, and the second water inlet is formed in one end far away from the first driving motor; the crushing blades and the stirring rods are fixedly arranged on the rotating shaft, the crushing blades are positioned below the feeding hole, and the stirring rods are positioned in the middle of the rotating shaft; the other end of each stirring rod is connected with a stirring block;
when the mixing tank works, solid fertilizer is mixed with water in the mixing tank, and the solid fertilizer can be completely mixed within a certain time; the existing stirring device is easy to block a first water inlet, a second water inlet and a drip irrigation pipe due to the fact that solid fertilizers are not melted, and meanwhile, when the fertilizers are not melted completely, solution flows out of the first water inlet and the second water inlet into the drip irrigation pipe, so that the concentration of mixed solution flowing out from front to back is inconsistent, and growth of crops is affected;
therefore, the stirring module is arranged; firstly, a first driving motor is controlled by a controller to drive a rotating shaft to rotate, and the rotating shaft drives crushing leaves to rotate; putting the solid fertilizer into a mixing tank through a feed inlet, and then plugging the feed inlet; crushing the solid fertilizer into powder by crushing the leaves in the process that the solid fertilizer falls into the mixing tank by crushing the leaves; then, water is added into the mixing tank through the first water inlet and the second water inlet simultaneously, so that the water inlet speed is higher; meanwhile, the rotating shaft drives the stirring rod to drive the stirring block to rotate in the mixing tank, and the fertilizer in the mixing tank moves from one end of the first water inlet to one end of the second water inlet through the crushing blade and the stirring block; when the fertilizer deposited at the bottom of the mixing tank moves to the position of the stirring block, the stirring block scoops up the fertilizer from the bottom once and again, so that the contact area of the fertilizer and water is increased, and the fertilizer and water in the mixing tank are mixed more uniformly; finally, the uniformly mixed solution flows out from one end of the first water inlet and one end of the second water inlet, and is pressed into a drip irrigation pipe through a pump to be subjected to drip irrigation on crops;
the invention is provided with the crushing leaves and the stirring block, so that the solid fertilizer is easier to dissolve in water after the crushing leaves are crushed; afterwards again through the stirring piece for fertilizer mixes the back completely with water and flows from No. two water inlets and a water inlet again, when guaranteeing not to cause a water inlet, No. two water inlets and drip irrigation the jam of pipe, makes the fertilizer solution misce bene that flows from a water inlet and No. two water inlets, has realized intelligent process of driping irrigation.
Preferably, the rotating module comprises a bracket, a second driving motor, a gear and gear teeth; the two brackets are arranged at two ends of the mixing tank and are rotationally connected with the mixing tank; the gear teeth are fixed below the middle part of the mixing tank; a gear is meshed below the gear teeth; the gear is rotationally connected with a second driving motor; when the mixing tank works, the rotating module is arranged below the mixing tank; after water inlet of the first water inlet and the second water inlet is finished; the controller controls the second driving motor to drive the gear to rotate back and forth, the gear drives the mixing tank to rotate back and forth by driving the gear teeth below the mixing tank, the rotating angle is small at the moment, the solution cannot flow out of the first water inlet and the second water inlet, and after the stirring is finished, the rotating angle is increased, so that the stirred solution is pressed into the drip irrigation pipe through the pump; the fertilizer at the bottom of the mixing tank also rotates along with the mixing tank, so that the fertilizer can be dissolved in water more quickly; the stirring speed of the stirring device is improved.
Preferably, a spring is fixedly connected between each stirring rod and each stirring block; when the stirring device works, a spring is connected between the stirring rod and the stirring block; when the spring rotated the lower half part of blending tank, the spring began tensile extension for the stirring piece can be shoveled the fertilizer that the bottom was depositd, and when the spring rotated the upper half of blending tank, the spring was compressed, and the spring makes the stirring piece shake at the in-process of compression extension, and the stirring piece makes the rivers in the blending tank disturbed at the in-process of shake, thereby by the fertilizer of shoveling can be faster dissolve in aqueous, has strengthened agitating unit's stirring effect.
Preferably, sleeves are arranged at the positions, corresponding to the first water inlet and the second water inlet, of the upper half part of the mixing tank; the first water inlet and the second water inlet are formed in the sleeve; a filter screen is arranged inside the sleeve at the positions of the first water inlet and the second water inlet; when the drip irrigation device works, the first water inlet and the second water inlet are formed in the sleeve, the water inlet and outlet speed is higher due to the larger area of the sleeve, and if impurities exist on the filter screen, the impurities on the filter screen can be effectively flushed away when the mixing tank rotates back and forth, so that the impurities in water can be prevented from entering the drip irrigation pipe through the first water inlet and the second water inlet to block a drip irrigation opening; the stirring device can work normally.
Preferably, the stirring block is arranged in a hook shape, and one end of the stirring block, which is far away from the spring, is thinner than one end connected with the spring; when the stirring device works, the stirring block is arranged into a hook shape; when the stirring block rotates to the lower end of the mixing tank, the hook-shaped stirring block scoops up the precipitated fertilizer into the stirring block, the stirring block drives the fertilizer to rotate, and the fertilizer on the upper surface of the stirring block is dissolved in water in the rotating process; when the stirring block rotates to the upper part of the mixing tank, the fertilizer in the residual stirring block falls off from the stirring block, and the stirring is repeated in such a way that the fertilizer is lifted by the stirring block layer by layer and then falls off, so that the fertilizer deposited at the bottom of the mixing tank can be dissolved more quickly; further improving the stirring speed of the stirring device.
Preferably, each stirring rod is provided with a turbulence hole, and a spoiler is fixedly connected to the outer part of each stirring rod; when the stirring device works, the stirring rod is provided with the flow disturbing hole, so that the stirring rod disturbs the flow velocity of water in the mixing tank in the rotating process, and the fertilizer can be better dissolved in the water; the outer spoiler of puddler can further disturb the velocity of flow of water for the dissolution rate of fertilizer, further reinforcing agitating unit's stirring effect.
The invention has the following beneficial effects:
1. according to the water and fertilizer integrated drip irrigation system based on the intelligent agriculture, solid fertilizer is crushed into powder through crushing leaves; then, water is added into the mixing tank through the first water inlet, the rotating shaft drives the stirring rod to drive the stirring block to rotate in the mixing tank, and the fertilizer in the mixing tank moves from one end of the first water inlet to one end of the second water inlet; the stirring block shovels the fertilizer deposited at the bottom of the mixing tank from the bottom once and again, so that the contact area of the fertilizer and water is increased, and the fertilizer and the water in the mixing tank are mixed more uniformly; finally, the uniformly mixed solution flows out from one end of the second water inlet and is dripped onto crops.
2. The invention relates to a water and fertilizer integrated drip irrigation system based on intelligent agriculture, which is characterized in that a rotating module is arranged below a mixing tank; after water inlet in the first water inlet is finished; the controller controls the second driving motor to drive the gear to rotate back and forth, and the gear drives the mixing tank to rotate back and forth by driving the gear teeth below the mixing tank, so that the fertilizer at the bottom of the mixing tank also rotates along with the mixing tank, and the fertilizer can be dissolved in water more quickly; the stirring speed of the stirring device is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
in the figure: the device comprises a first water inlet 1, a feed inlet 2, a mixing tank 3, a second water inlet 4, a first driving motor 5, a rotating shaft 6, a stirring module 7, a crushing blade 71, a stirring rod 72, a stirring block 73, a rotating module 8, a support 81, a second driving motor 82, a gear 83, gear teeth 84, a spring 9, a sleeve 10, a filter screen 11, a turbulent flow hole 12 and a turbulent flow plate 13.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, the water and fertilizer integrated drip irrigation system based on intelligent agriculture comprises a stirring device, a pump and a drip irrigation pipe, wherein the stirring device is used for stirring and mixing water and fertilizer and then carrying out drip irrigation; the stirring device comprises a controller, a first water inlet 1, a feed inlet 2, a mixing tank 3, a second water inlet 4, a first driving motor 5, a rotating shaft 6, a stirring module 7 and a rotating module 8; the stirring module 7 comprises a crushing blade 71, a stirring rod 72 and a stirring block 73; the first driving motor 5 is fixedly arranged at one end of the mixing tank 3, and the first driving motor 5 is rotatably connected with the rotating shaft 6; a first water inlet 1, a feed inlet 2 and a second water inlet 4 are formed above the mixing tank 3, the first water inlet 1 and the feed inlet 2 are formed in one end close to the first driving motor 5, and the second water inlet 4 is formed in one end far away from the first driving motor 5; the crushing blades 71 and the stirring rods 72 are fixedly arranged on the rotating shaft 6, the crushing blades 71 are positioned below the feeding hole 2, and the stirring rods 72 are positioned in the middle of the rotating shaft 6; the other end of each stirring rod 72 is connected with a stirring block 73;
when the mixing tank works, solid fertilizer needs a certain time to be completely mixed when being mixed with water in the mixing tank 3; the existing stirring device is easy to block a first water inlet 1, a second water inlet 4 and a drip irrigation pipe due to the fact that solid fertilizers are not melted, and meanwhile when the fertilizers are not melted completely, solution flows out of the first water inlet 1 and the second water inlet 4 into the drip irrigation pipe, so that the concentration of mixed solution flowing out from front to back is inconsistent, and growth of crops is affected;
therefore, the stirring module 7 is arranged; firstly, a controller controls a first driving motor 5 to drive a rotating shaft 6 to rotate, and the rotating shaft 6 drives the crushing blades 71 to rotate; then putting the solid fertilizer into the mixing tank 3 through the feed inlet 2, and then plugging the feed inlet 2; during the process that the solid fertilizer falls into the mixing tank 3 through the crushing leaves 71, the crushing leaves 71 crush the solid fertilizer into powder; then, water is added into the mixing tank 3 through the first water inlet 1 and the second water inlet 4 simultaneously, so that the water inlet speed is higher; meanwhile, the rotating shaft 6 drives the stirring rod 72 to drive the stirring block 73 to rotate in the mixing tank 3, and the fertilizer in the mixing tank 3 moves from one end of the first water inlet 1 to one end of the second water inlet 4 through the crushing blade 71 and the stirring block 73; when the fertilizer deposited at the bottom of the mixing tank 3 moves to the position of the stirring block 73, the stirring block 73 scoops up the fertilizer from the bottom once and again, so that the contact area of the fertilizer and water is increased, and the fertilizer and the water in the mixing tank 3 are mixed more uniformly; finally, the uniformly mixed solution flows out from one end of the first water inlet 1 and one end of the second water inlet 4, and is pressed into a drip irrigation pipe through a pump to be subjected to drip irrigation on crops;
according to the invention, the crushing blade 71 and the stirring block 73 are arranged, so that the solid fertilizer is easier to dissolve in water after being crushed by the crushing blade 71; afterwards again through stirring piece 73 for fertilizer mixes the back completely with water and flows out from No. two water inlets 4 and a water inlet 1 again, when guaranteeing not to cause the jam of a water inlet 1, No. two water inlets 4 and drip irrigation the pipe, makes the fertilizer solution misce bene that flows out from a water inlet 1 and No. two water inlets 4, has realized intelligent drip irrigation process.
As an embodiment of the present invention, the rotating module 8 includes a bracket 81, a second driving motor 82, a gear 83 and gear teeth 84; the two brackets 81 are arranged at two ends of the mixing tank 3, and the brackets 81 are rotatably connected with the mixing tank 3; the gear teeth 84 are fixed below the middle part of the mixing tank 3; a gear 83 is meshed below the gear teeth 84; the gear 83 is rotationally connected with the second driving motor 82; when the device works, the rotating module 8 is arranged below the mixing tank 3; after water is fed into the first water inlet 1 and the second water inlet 4; the controller controls the second driving motor 82 to drive the gear 83 to rotate back and forth, the gear 83 drives the mixing tank 3 to rotate back and forth by driving the gear teeth 84 below the mixing tank 3, the rotating angle is small at the moment, the solution cannot flow out from the first water inlet 1 and the second water inlet 4, and after stirring is finished, the rotating angle is increased, so that the stirred solution is pressed into the drip irrigation pipe through a pump; so that the fertilizer at the bottom of the mixing tank 3 also rotates along with the mixing tank 3, and the fertilizer can be dissolved in water more quickly; the stirring speed of the stirring device is improved.
As an embodiment of the present invention, a spring 9 is fixedly connected between each stirring rod 72 and the stirring block 73; when the stirring device works, the spring 9 is connected between the stirring rod 72 and the stirring block 73; when the spring 9 rotates to the lower half part of the mixing tank 3, the spring 9 starts to stretch and extend, so that the stirring block 73 can scoop up the fertilizer deposited at the bottom, when the spring 9 rotates to the upper half part of the mixing tank 3, the spring 9 is compressed, the spring 9 enables the stirring block 73 to shake in the process of the compression and extension, the stirring block 73 enables the water flow in the mixing tank 3 to be disturbed in the shaking process, so that the scooped fertilizer can be dissolved in water more quickly, and the stirring effect of the stirring device is enhanced.
As an embodiment of the invention, sleeves 10 are arranged at the positions of the upper half part of the mixing tank 3 corresponding to the first water inlet 1 and the second water inlet 4; the first water inlet 1 and the second water inlet 4 are formed in the sleeve 10; a filter screen 11 is arranged at the lower end of the sleeve 10 at the positions of the first water inlet 1 and the second water inlet 4; when the water inlet device works, the first water inlet 1 and the second water inlet 4 are formed in the sleeve 10, and the water inlet speed and the water outlet speed are higher due to the large area of the sleeve 10; because the lower end of the sleeve 10 is provided with the filter screen 11, if the filter screen 11 is provided with impurities, the impurities on the filter screen 11 can be effectively washed away when the mixing tank rotates back and forth, and the impurities in water are prevented from entering the drip irrigation pipe through the first water inlet 1 and the second water inlet 4 to cause the blockage of a drip irrigation opening; the stirring device can work normally.
As an embodiment of the present invention, the stirring block 73 is provided in a hook shape, and one end of the stirring block 73 away from the spring 9 is thinner than the end connected with the spring 9; when the stirring device works, the stirring block 73 is arranged into a hook shape; when the stirring block 73 rotates to the lower end of the mixing tank 3, the hook-shaped stirring block 73 scoops up the precipitated fertilizer into the stirring block 73, the stirring block 73 drives the fertilizer to rotate, and in the rotating process, the fertilizer on the upper surface of the stirring block 73 is dissolved in water; when the stirring block 73 rotates to the upper part of the mixing tank 3, the fertilizer in the residual stirring block 73 falls off from the stirring block 73, and the fertilizer is lifted by the stirring block 73 layer by layer and then falls off in such a reciprocating way, so that the fertilizer deposited at the bottom of the mixing tank 3 can be dissolved more quickly; further improving the stirring speed of the stirring device.
As an embodiment of the present invention, each of the stirring rods 72 is provided with a spoiler 12, and the exterior of each stirring rod 72 is fixedly connected with a spoiler 13; when the fertilizer mixer works, the stirring rod 72 is provided with the flow disturbing hole 12, so that the stirring rod 72 disturbs the flow velocity of water in the mixing tank 3 in the rotating process, and the fertilizer can be better dissolved in the water; the spoiler 13 outside the stirring rod 72 can further disturb the flow rate of water, accelerate the dissolution rate of the fertilizer and further enhance the stirring effect of the stirring device.
The specific working process is as follows:
when the solid fertilizer is mixed with water in the mixing tank 3, a certain time is needed for complete mixing; the existing stirring device is easy to block a first water inlet 1, a second water inlet 4 and a drip irrigation pipe due to the fact that solid fertilizers are not melted, and meanwhile when the fertilizers are not melted completely, solution flows out of the first water inlet 1 and the second water inlet 4 into the drip irrigation pipe, so that the concentration of mixed solution flowing out from front to back is inconsistent, and growth of crops is affected; therefore, the stirring module 7 is arranged; firstly, a controller controls a first driving motor 5 to drive a rotating shaft 6 to rotate, and the rotating shaft 6 drives the crushing blades 71 to rotate; then putting the solid fertilizer into the mixing tank 3 through the feed inlet 2, and then plugging the feed inlet 2; during the process that the solid fertilizer falls into the mixing tank 3 through the crushing leaves 71, the crushing leaves 71 crush the solid fertilizer into powder; then, water is added into the mixing tank 3 through the first water inlet 1 and the second water inlet 4 simultaneously, so that the water inlet speed is higher; meanwhile, the rotating shaft 6 drives the stirring rod 72 to drive the stirring block 73 to rotate in the mixing tank 3, and the fertilizer in the mixing tank 3 moves from one end of the first water inlet 1 to one end of the second water inlet 4 through the crushing blade 71 and the stirring block 73; when the fertilizer deposited at the bottom of the mixing tank 3 moves to the position of the stirring block 73, the stirring block 73 scoops up the fertilizer from the bottom once and again, so that the contact area of the fertilizer and water is increased, and the fertilizer and the water in the mixing tank 3 are mixed more uniformly; finally, the uniformly mixed solution flows out from one end of the first water inlet 1 and one end of the second water inlet 4, and is pressed into a drip irrigation pipe through a pump to be subjected to drip irrigation on crops; according to the invention, the crushing blade 71 and the stirring block 73 are arranged, so that the solid fertilizer is easier to dissolve in water after being crushed by the crushing blade 71; then, the fertilizer is completely mixed with water and then flows out of the second water inlet 4 and the first water inlet 1 through the stirring block 73, so that the fertilizer solution flowing out of the first water inlet 1 and the second water inlet 4 is uniformly mixed while the blockage of the first water inlet 1, the second water inlet 4 and the drip irrigation pipe is avoided, and the intelligent drip irrigation process is realized; because the invention is provided by arranging a rotating module 8 below the mixing tank 3; after water is fed into the first water inlet 1 and the second water inlet 4; the controller controls the second driving motor 82 to drive the gear 83 to rotate back and forth, the gear 83 drives the mixing tank 3 to rotate back and forth by driving the gear teeth 84 below the mixing tank 3, the rotating angle is small at the moment, the solution cannot flow out from the first water inlet 1 and the second water inlet 4, and after stirring is finished, the rotating angle is increased, so that the stirred solution is pressed into the drip irrigation pipe through a pump; so that the fertilizer at the bottom of the mixing tank 3 also rotates along with the mixing tank 3, and the fertilizer can be dissolved in water more quickly; the stirring speed of the stirring device is improved; because the present invention is provided by connecting a spring 9 between the stirring rod 72 and the stirring block 73; when the spring 9 rotates to the lower half part of the mixing tank 3, the spring 9 starts to stretch and extend, so that the stirring block 73 can scoop up fertilizer deposited at the bottom, when the spring 9 rotates to the upper half part of the mixing tank 3, the spring 9 is compressed, the spring 9 enables the stirring block 73 to shake in the process of compression and extension, and the stirring block 73 enables water flow in the mixing tank 3 to be disturbed in the process of shaking, so that the scooped fertilizer can be dissolved in water more quickly, and the stirring effect of the stirring device is enhanced; because the first water inlet 1 and the second water inlet 4 are formed in the sleeve 10, the water inlet speed and the water outlet speed are higher due to the larger area of the sleeve 10, and because the filter screen 11 is arranged at the lower end of the sleeve 10, if impurities exist on the filter screen 11, the impurities on the filter screen 11 can be effectively flushed away when the mixing tank rotates back and forth, so that the impurities in water are prevented from entering the drip irrigation pipe through the first water inlet 1 and the second water inlet 4 to cause the blockage of a drip irrigation opening; the normal work of the stirring device is effectively guaranteed; the present invention is provided by setting the stirring block 73 to a hook type; when the stirring block 73 rotates to the lower end of the mixing tank 3, the hook-shaped stirring block 73 scoops up the precipitated fertilizer into the stirring block 73, the stirring block 73 drives the fertilizer to rotate, and in the rotating process, the fertilizer on the upper surface of the stirring block 73 is dissolved in water; when the stirring block 73 rotates to the upper part of the mixing tank 3, the fertilizer in the residual stirring block 73 falls off from the stirring block 73, and the fertilizer is lifted by the stirring block 73 layer by layer and then falls off in such a reciprocating way, so that the fertilizer deposited at the bottom of the mixing tank 3 can be dissolved more quickly; the stirring speed of the stirring device is further improved; in addition, the stirring rod 72 is provided with the flow disturbing hole 12, so that the stirring rod 72 disturbs the flow velocity of water in the mixing tank 3 in the rotating process, and the fertilizer can be better dissolved in the water; the spoiler 13 outside the stirring rod 72 can further disturb the flow rate of water, accelerate the dissolution rate of the fertilizer and further enhance the stirring effect of the stirring device.
The front, the back, the left, the right, the upper and the lower are based on the observation angle of the person, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present 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.