阅读说明：本技术 一种林业自然规划用土壤成分差异分析设备 (Forestry nature is soil composition difference analysis equipment for planning ) 是由 李金丽 曹光杰 李凤英 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种林业自然规划用土壤成分差异分析设备,包括：检测机台、离心驱动机构、离心搭载组件以及固定于离心驱动机构输出端的调节杆和压合定位机构,检测机台的表面设有防护透罩、控制开关和单向真空阀,单向真空阀的端部固定连接有位于检测机台内部的真空泵,真空泵的端部固定连接有气压表。本发明中,采用新型载片式离心分离结构,取土壤样本于离心搭载组件的表面稀释溶解并通过横向离心驱动机构的离心旋转运动,使土壤样品中个成分通过离心作用进入不同分离隔环分区并进行过滤隔离,即同步完成离心和分离程序,操作简单高效,避免传统静置分离耗时长的问题,提高土壤检测工作效率。(The invention discloses a soil composition difference analysis device for forestry natural planning, which comprises: the device comprises a detection machine table, a centrifugal driving mechanism, a centrifugal carrying assembly, an adjusting rod and a pressing positioning mechanism, wherein the adjusting rod and the pressing positioning mechanism are fixed at the output end of the centrifugal driving mechanism, a protective transparent cover, a control switch and a one-way vacuum valve are arranged on the surface of the detection machine table, the end part of the one-way vacuum valve is fixedly connected with a vacuum pump located inside the detection machine table, and the end part of the vacuum pump is fixedly connected with a barometer. According to the invention, a novel carrier type centrifugal separation structure is adopted, a soil sample is diluted and dissolved on the surface of the centrifugal carrying component, and is subjected to centrifugal rotation movement of the transverse centrifugal driving mechanism, so that individual components in the soil sample enter different separation spacer ring partitions through centrifugal action and are filtered and isolated, namely, the centrifugation and separation procedures are synchronously completed, the operation is simple and efficient, the problem of long time consumption of the traditional standing separation is avoided, and the soil detection working efficiency is improved.)

1. A forestry nature planning is with soil composition difference analysis equipment which characterized in that includes: the device comprises a detection machine table (100), a centrifugal driving mechanism (200), a centrifugal carrying assembly (500), an adjusting rod (300) fixed at the output end of the centrifugal driving mechanism (200) and a pressing positioning mechanism (400), wherein a protective transparent cover (110), a control switch (130) and a one-way vacuum valve (140) are arranged on the surface of the detection machine table (100), the end part of the one-way vacuum valve (140) is fixedly connected with a vacuum pump (150) positioned inside the detection machine table (100), and the end part of the vacuum pump (150) is fixedly connected with a gas pressure gauge (151); the centrifugal driving mechanism (200) comprises a driving motor (210) and a rotary table (220), a belt is movably sleeved on the outer sides of the driving motor (210) and the rotary table (220), the adjusting rod (300) is fixedly installed on the top surface of the rotary table (220), the pressing and positioning mechanism (400) comprises an adjusting seat (410), an elastic pressing plate (420), an adjusting knob (440) and a screw rod assembly (450), a locking sleeve hole (411) matched with the adjusting rod (300) is formed in the bottom surface of the adjusting seat (410), and a positioning rubber block (430) is fixedly installed at the end part of the elastic pressing plate (420); the centrifugal carrying assembly (500) comprises a cover glass (510) and a glass slide (520), wherein the surface of the glass slide (520) is provided with a plurality of carrying hoppers (521), the carrying hoppers (521) are a plurality of concentric annular intervals, a through groove is formed in the surface of each carrying hopper (521), a nanometer micropore diaphragm (523) is clamped on the surface of each through groove, and the circle center of each carrying hopper (521) and the circle center of the turntable (220) are located on the same vertical line.

2. The soil composition difference analysis device for forestry natural planning according to claim 1, wherein a sealing pressing edge (111) is disposed at an edge of the protective transparent cover (110), a sealing ring (112) abutting against a top surface of the protective transparent cover (110) is disposed on a bottom surface of the sealing pressing edge (111), a pressing locking block (120) is disposed on a top surface of the detection machine (100), the pressing locking block (120) is symmetrically disposed on two sides of the protective transparent cover (110) and is fixed to the top surface of the sealing pressing edge (111) in a pressing manner, and the protective transparent cover (110) is made of transparent acrylic material and is of a semi-spherical arc structure.

3. The equipment for analyzing the difference in soil composition for natural planning in forestry according to claim 1, wherein the rotating disc (220) and the adjusting rod (300) are tungsten steel members, the center of gravity of the adjusting rod (300) coincides with the center of the rotating disc (220), and a plurality of locking holes (310) are formed in the surface of the adjusting rod (300).

4. The soil composition difference analysis equipment for forestry natural planning according to claim 1, wherein a belt pulley is fixedly sleeved at an output end of the driving motor (210), a belt transmission groove is formed in the periphery of the turntable (220), and the belt is made of elastic rubber.

5. The soil composition difference analysis device for forestry natural planning according to claim 1, wherein the positioning rubber block (430) is a rubber or silica gel member, the positioning rubber block (430) is polygonal, and a bottom surface of the positioning rubber block (430) and a surface of the centrifugal carrying assembly (500) are abutted to each other.

6. The soil composition difference analysis device for forestry natural planning according to claim 1, wherein the screw rod assembly (450) is rotatably installed inside the adjusting seat (410), the bottom end of the adjusting knob (440) and the surface of the screw rod assembly (450) are provided with transmission teeth which are meshed with each other, the surface of the screw rod assembly (450) is in threaded sleeve connection with a linkage block (441), the surface of the linkage block (441) is provided with a tension spring connected with the elastic pressing plate (420), and one end of the adjusting knob (440) is rotatably connected with the inside of the adjusting seat (410).

7. The soil composition difference analysis device for forestry natural planning according to claim 1, wherein the cover glass (510) and the glass slide (520) are flat glass sheet structures, the surfaces of the cover glass (510) and the glass slide (520) are mutually attached and have the same size and shape, the cover glass (510) and the glass slide (520) are high-definition organic resin glass materials, and the thickness of the cover glass (510) and the thickness of the glass slide (520) are less than 1.5 mm.

8. The soil composition difference analysis device for forestry natural planning according to claim 1, wherein the separation ring (522) is a plurality of annular ribs, the top surfaces of the annular ribs are attached to the bottom surface of the cover glass (510), the annular ribs are arranged concentrically, and the surfaces of the annular ribs are provided with slots which are communicated with each other and distributed in irregular directions.

Technical Field

The invention relates to the technical field of soil detection, in particular to soil component difference analysis equipment for forestry natural planning.

Background

The traditional forestry development mostly depends on pesticides, fertilizers, production hormones and the like to complete the growth cycle, the generated value is low, although the traditional forestry product has good advantages and high yield, the taste and the taste are far away compared with the forestry organic product when the traditional forestry product is eaten, the organic agricultural product does not need to be applied with fertilizers and clothes during the growth cycle, and the soil, water and air environment pollution is avoided during the growth and planting process. By adopting planning forestry planting, the organic planting environmental conditions can be effectively protected, and drought and waterlogging and cross infection of harmful pollutants through rainwater can be prevented, so that potential safety hazards of food growth are avoided. Efficient and ecological conditions are created for the growth of organic crops through planning, so that the rationality of agricultural planting is formed, the food safety and the organic property are achieved, and the soil geology is a main influence factor in the natural planning of forestry.

Soil sample composition analytical equipment mainly used soil's composition or the analysis of the physicochemical property of soil to generating development, fertility evolution, soil resource evaluation to soil, soil analysis has very big influence to the development of soil science, and the analysis of soil analyzer to soil is mainly the content and some properties of the various chemical composition of survey soil, and common survey project has: the method comprises the following steps of soil mineral full-content determination, soil active silicon, aluminum, iron and manganese content determination, soil total nitrogen, total phosphorus and total potassium content determination, soil available nutrient content determination, soil organic matter content determination and the like.

However, the existing soil sample component analysis device is simple in structure, various components of soil are mainly analyzed and judged through test tube sampling and water or other diluents in a dissolving and quantitative manner, other impurities or floras and the like mingled inside the soil are generally separated in a centrifugal and standing layering manner, the impurities which are soluble and insoluble are separated, the time-consuming long operation efficiency of centrifugal standing operation is low, the soil monitoring and analyzing work efficiency is seriously affected, and therefore certain defects exist.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art or the related art.

Therefore, the technical scheme adopted by the invention is as follows: a soil composition difference analysis device for forestry nature planning, comprising: the device comprises a detection machine table, a centrifugal driving mechanism, a centrifugal carrying assembly, an adjusting rod and a pressing positioning mechanism, wherein the adjusting rod and the pressing positioning mechanism are fixed at the output end of the centrifugal driving mechanism; the centrifugal driving mechanism comprises a driving motor and a rotary table, a belt is movably sleeved on the outer sides of the driving motor and the rotary table, the adjusting rod is fixedly installed on the top surface of the rotary table, the pressing positioning mechanism comprises an adjusting seat, an elastic pressing plate, an adjusting knob and a lead screw assembly, a locking sleeve hole matched with the adjusting rod is formed in the bottom surface of the adjusting seat, and a positioning rubber block is fixedly installed at the end part of the elastic pressing plate; the centrifugal carrying assembly comprises a cover glass and a glass slide, a plurality of material carrying hoppers are arranged on the surface of the glass slide and are in a plurality of concentric annular intervals, a through groove is formed in the surface of each material carrying hopper, a nanometer micropore diaphragm is clamped on the surface of each through groove, and the circle centers of the material carrying hoppers and the circle center of the rotary table are located on the same vertical line.

The present invention in a preferred example may be further configured to: the edge of the protective transparent cover is provided with a sealing pressing edge, the bottom surface of the sealing pressing edge is provided with a sealing ring which is in butt joint with the top surface of the protective transparent cover, the top surface of the detection machine table is provided with a pressing locking block, the pressing locking blocks are symmetrically arranged on two sides of the protective transparent cover and are fixed with the top surface of the sealing pressing edge in a pressing mode, and the protective transparent cover is a transparent acrylic component and is of a semi-spherical arc structure.

Through adopting above-mentioned technical scheme, close the protection translucent cover and utilize the vacuum pump to carry out the evacuation processing to the inside of protection translucent cover, utilize the protection translucent cover to carry out independent cavity isolation and protect the sample on the surface formation vacuum cavity that detects the board, avoid miscellaneous dirt and oxidation influence, transparent ya keli is convenient for observe inside separation state and safe explosion-proof.

The present invention in a preferred example may be further configured to: the rotary table and the adjusting rod are tungsten steel members, the center of gravity of the adjusting rod coincides with the circle center of the rotary table, a plurality of locking holes are formed in the surface of the adjusting rod, the stability is improved in the rotation of the rotary table and the adjusting rod through the improvement of the quality of the rotary table and the quality of the adjusting rod, and stable centrifugal force is provided for sample inspection and separation.

The present invention in a preferred example may be further configured to: the fixed belt pulley that has cup jointed of driving motor's output, the belt transmission groove has been seted up to the periphery of carousel, the belt is elastic rubber material.

By adopting the technical scheme, the non-rigid transmission in the transmission of the driving motor and the turntable can be effectively ensured in the transmission of the elastic belt, the uniform deceleration movement of the turntable is not influenced when the driving motor drives to decelerate, and the natural and stable deceleration stop of sample separation is ensured.

The present invention in a preferred example may be further configured to: the positioning rubber block is a rubber or silica gel component, is polygonal, and the bottom surface of the positioning rubber block is abutted against the surface of the centrifugal carrying assembly to tightly attach the surface of the centrifugal carrying assembly, so that the positioning effect is ensured.

The present invention in a preferred example may be further configured to: the screw rod assembly is rotatably installed on the inner side of the adjusting seat, the bottom end of the adjusting knob and the surface of the screw rod assembly are provided with transmission teeth which are meshed with each other, the surface of the screw rod assembly is in threaded sleeve connection with a linkage block, the surface of the linkage block is provided with an extension spring connected with an elastic pressing plate, and one end of the adjusting knob is rotatably connected with the inner side of the adjusting seat.

Through adopting above-mentioned technical scheme, the rotary adjusting knob drives linkage piece rotary motion and pulling elastic pressure plate and deflects downwards through the lead screw subassembly and utilizes the location to glue the piece and carry on the subassembly to the centrifugation and carry on the crimping fixedly, guarantees the fixed effect that the subassembly was carried on in the centrifugation.

The present invention in a preferred example may be further configured to: the cover glass and the glass slide are of plane glass sheet structures, the surfaces of the cover glass and the glass slide are mutually attached and have the same size and shape, the cover glass and the glass slide are high-definition organic resin glass components, and the thickness of the cover glass and the thickness of the glass slide are smaller than 1.5 mm.

Furthermore, the separation spacer ring is a plurality of annular bead structures, and the top surface of annular bead is laminated with the bottom surface of glass slide mutually, and is a plurality of annular bead is the concentric circles form and arranges, and the surface of annular bead all is equipped with the slotted hole of mutual UNICOM, the slotted hole is irregular direction distribution.

By adopting the technical scheme, in the centrifugal process, the speed of each component in the soil penetrating through the nano microporous membrane between the separation spacer rings is different according to different densities and different centrifugal forces, so that the soil components are separated and enter into each separation spacer ring interval, the soil components are conveniently extracted for differential analysis of the soil components, the centrifugation and separation procedures are synchronously completed, the operation is simple and efficient, and the problem of long time consumption of the traditional standing separation is avoided.

The beneficial effects obtained by the invention are as follows:

1. according to the invention, a novel carrier type centrifugal separation structure is adopted, a soil sample is diluted and dissolved on the surface of the centrifugal carrying component, and is subjected to centrifugal rotation movement of the transverse centrifugal driving mechanism, so that individual components in the soil sample enter different separation spacer ring partitions through centrifugal action and are filtered and isolated, namely, the centrifugation and separation procedures are synchronously completed, the operation is simple and efficient, the problem of long time consumption of the traditional standing separation is avoided, and the soil detection working efficiency is improved.

2. According to the invention, by adopting a vacuum centrifugal structure, on one hand, a vacuum cavity is formed on the surface of the detection machine table by using the protective transparent cover to carry out independent cavity isolation to protect a sample, thereby avoiding the influence of dust and oxidation, on the other hand, the covering strength of the protective transparent cover is improved by vacuum negative pressure, and the influence of bubbles between a cover glass and a glass slide is eliminated, so that the centrifugal separation effect is better.

3. According to the centrifugal carrying assembly structure, the combination of the adjustable adjusting rod and the pressing positioning mechanism is used for pressing and fixing the centrifugal carrying assembly structure, so that the relative position of the pressing positioning mechanisms at two ends on the surface of the adjusting rod can be accurately adjusted during installation, the dynamic balance of the adjusting rod and the pressing positioning mechanism is kept, the centrifugal rotation is more stable, the separation effect is ensured, and the phenomenon of single-side substance agglomeration is avoided.

Drawings

FIG. 1 is a schematic overall structure diagram of one embodiment of the present invention;

FIG. 2 is a schematic view of a surface structure of a testing machine according to an embodiment of the present invention;

FIG. 3 is a schematic view of a centrifugal drive mechanism mounting arrangement according to one embodiment of the present invention;

FIG. 4 is a schematic view of a protective lens cover according to an embodiment of the present invention;

FIG. 5 is a schematic view of an evacuation configuration according to one embodiment of the present invention;

FIG. 6 is a schematic structural view of a pressing positioning mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a pressing positioning mechanism according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a centrifugal force loading module according to an embodiment of the present invention;

FIG. 9 is a schematic view of a surface structure of a slide according to one embodiment of the present invention;

fig. 10 is a schematic view of the working principle of the nanoporous membrane of one embodiment of the invention.

Reference numerals:

100. detecting a machine table; 110. a protective transparent cover; 120. pressing the locking block; 130. a control switch; 140. a one-way vacuum valve; 150. a vacuum pump; 111. sealing and pressing edges; 112. a seal ring; 151. a barometer;

200. a centrifugal drive mechanism; 210. a drive motor; 220. a turntable;

300. adjusting a rod; 310. a locking hole;

400. a pressing positioning mechanism; 410. an adjusting seat; 420. an elastic pressure plate; 430. positioning the rubber block; 440. adjusting a knob; 450. a screw assembly; 411. a locking trepan boring; 441. a linkage block;

500. a centrifugal carrying assembly; 510. a cover glass; 520. a glass slide; 521. a loading hopper; 522. separating the spacer ring; 523. a nano microporous membrane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

It is to be understood that this description is made only by way of example and not as a limitation on the scope of the invention.

The following describes a soil composition difference analysis device for natural planning of forestry, which is provided by some embodiments of the invention, with reference to the accompanying drawings.

Referring to fig. 1 to 10, the present invention provides a soil composition difference analysis apparatus for natural planning of forestry, including: the device comprises a detection machine table 100, a centrifugal driving mechanism 200, a centrifugal carrying assembly 500, an adjusting rod 300 fixed at the output end of the centrifugal driving mechanism 200 and a pressing positioning mechanism 400, wherein the surface of the detection machine table 100 is provided with a protective transparent cover 110, a control switch 130 and a one-way vacuum valve 140, the end part of the one-way vacuum valve 140 is fixedly connected with a vacuum pump 150 positioned inside the detection machine table 100, and the end part of the vacuum pump 150 is fixedly connected with a barometer 151; the centrifugal driving mechanism 200 comprises a driving motor 210 and a turntable 220, the outer sides of the driving motor 210 and the turntable 220 are movably sleeved with a belt, an adjusting rod 300 is fixedly installed on the top surface of the turntable 220, the press-fit positioning mechanism 400 comprises an adjusting seat 410, an elastic pressing plate 420, an adjusting knob 440 and a screw rod assembly 450, the bottom surface of the adjusting seat 410 is provided with a locking sleeve hole 411 matched with the adjusting rod 300, and the end part of the elastic pressing plate 420 is fixedly provided with a positioning rubber block 430; the centrifugal carrying assembly 500 comprises a cover glass 510 and a glass slide 520, wherein a plurality of loading hoppers 521 are arranged on the surface of the glass slide 520, the loading hoppers 521 are concentric annular sections, through grooves are formed in the surfaces of the adjacent loading hoppers 521, nanometer microporous membranes 523 are clamped on the surfaces of the through grooves, and the circle centers of the loading hoppers 521 and the circle center of the turntable 220 are located on the same vertical line.

In this embodiment, the edge of the transparent protective cover 110 is provided with a sealing edge 111, the bottom surface of the sealing edge 111 is provided with a sealing ring 112 abutting against the top surface of the transparent protective cover 110, the top surface of the inspection machine 100 is provided with a pressing locking block 120, the pressing locking blocks 120 are symmetrically arranged on two sides of the transparent protective cover 110 and are fixed to the top surface of the sealing edge 111 by pressing, and the transparent protective cover 110 is made of transparent acrylic material and has a semi-spherical arc structure.

Specifically, close protection translucent cover 110 and utilize vacuum pump 150 to carry out the evacuation processing to the inside of protection translucent cover 110, utilize protection translucent cover 110 to carry out independent cavity isolation at the surface formation vacuum cavity that detects board 100 and protect the sample, avoid miscellaneous dirt and oxidation influence, transparent ya keli is convenient for observe inside separation state and safe explosion-proof.

In this embodiment, the turntable 220 and the adjusting lever 300 are tungsten steel members, the center of gravity of the adjusting lever 300 coincides with the center of the turntable 220, and the surface of the adjusting lever 300 is provided with a plurality of locking holes 310, so that the quality of the turntable 220 and the quality of the adjusting lever 300 are improved, the stability of the turntable 220 and the adjusting lever 300 during rotation is improved, and a stable centrifugal force is provided for sample inspection and separation.

In this embodiment, a belt pulley is fixedly sleeved at the output end of the driving motor 210, a belt transmission groove is formed in the periphery of the turntable 220, and the belt is made of elastic rubber.

Specifically, in the elastic belt transmission, the non-rigid transmission in the transmission of the driving motor 210 and the turntable 220 can be effectively ensured, the uniform deceleration movement of the turntable 220 is not influenced when the driving motor 210 drives to decelerate, and the natural and stable deceleration stop of the sample separation is ensured.

In this embodiment, the positioning rubber block 430 is a rubber or silicone member, the positioning rubber block 430 is polygonal, the bottom surface of the positioning rubber block 430 and the surface of the centrifugal carrier assembly 500 are abutted against each other, and the surface of the centrifugal carrier assembly 500 is tightly attached to ensure the positioning effect.

In this embodiment, the screw rod assembly 450 is rotatably installed inside the adjusting seat 410, the bottom end of the adjusting knob 440 and the surface of the screw rod assembly 450 are provided with transmission teeth engaged with each other, the surface of the screw rod assembly 450 is threadedly sleeved with the linkage block 441, the surface of the linkage block 441 is provided with an extension spring connected with the elastic pressing plate 420, and one end of the adjusting knob 440 is rotatably connected with the inside of the adjusting seat 410.

Specifically, the adjusting knob 440 is rotated to drive the linkage block 441 to rotate through the screw rod assembly 450 and pull the elastic pressing plate 420 to deflect downwards, and the positioning rubber block 430 is used for crimping and fixing the centrifugal carrying assembly 500, so that the fixing effect of the centrifugal carrying assembly 500 is ensured.

In this embodiment, the cover glass 510 and the slide glass 520 are flat glass sheet structures, the surfaces of the cover glass 510 and the slide glass 520 are mutually attached and have the same size and shape, the cover glass 510 and the slide glass 520 are high-definition organic resin glass materials, and the thickness of the cover glass 510 and the slide glass 520 is less than 1.5 mm.

Further, separation spacer ring 522 is a plurality of annular bead structures, and the top surface of annular bead is laminated with the bottom surface of cover glass 510 mutually, and a plurality of annular beads are arranged with a concentric circles form, and the surface of annular bead all is equipped with the slotted hole of mutual UNICOM, and the slotted hole is irregular direction distribution.

Specifically, in the centrifugal process, the speed of each component in the soil passing through the nano-microporous membrane 523 between the separation rings 522 is different according to different densities and different centrifugal forces, so that the soil is separated into the separation ring 522 sections, the soil components are separated to facilitate extraction and differential analysis of the soil components, the centrifugation and separation procedures are synchronously completed, the operation is simple and efficient, and the problem of long time consumption in the traditional standing separation is solved.

The working principle and the using process of the invention are as follows:

firstly, opening the protective transparent cover 110 on the surface of the detection machine table 100, adjusting the initial position of the pressing and positioning mechanism 400, enabling the pressing and positioning mechanisms 400 on the two sides of the surface of the adjustment rod 300 to be symmetrically arranged about the circle center of the turntable 220 and locking the position of the pressing and positioning mechanism 400, taking out the disinfected and cleaned cover glass 510 and glass slide 520, randomly sampling, placing a soil sample at the circle center of the loading hopper 521, dripping diluent and covering the cover glass 510, ballasting the centrifugal carrying assembly 500 on the surface of the adjustment rod 300 through the positioning rubber blocks 430 on the two sides and locating right above the turntable 220, rotating the adjustment knob 440, driving the linkage block 441 to rotate through the screw rod assembly 450 and pulling the elastic pressing plate 420 to deflect downwards, pressing and fixing the centrifugal carrying assembly 500 through the positioning rubber blocks 430, closing the protective transparent cover 110 and vacuumizing the interior of the protective transparent cover 110 through the vacuum pump 150, forming a vacuum cavity on the surface of the detection machine 100 by using the protective transparent cover 110 to perform independent cavity isolation to protect the sample, avoiding the influence of dust and oxidation, improving the covering strength of the protective transparent cover 110 by vacuum negative pressure and eliminating the influence of bubbles between the cover glass 510 and the glass slide 520; the driving motor 210 is started to drive the turntable 220 and the centrifugal carrying assembly 500 to rotate centrifugally, and in the centrifugal process, the soil components are different in speed rate penetrating through the nano-microporous membranes 523 between the separation spacing rings 522 according to different densities and different centrifugal forces, so that the soil components are separated and enter the intervals of the separation spacing rings 522, and the soil components are separated to be convenient for extraction and differential analysis of the soil components.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "mounted," "connected," "fixed," and the like are used broadly and encompass, for example, a fixed connection, a removable connection, or an integral connection, and a connection may be a direct connection or an indirect connection via intermediate media. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be understood that when an element is referred to as being "mounted to," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.