阅读说明：本技术 石油回收装置 (Petroleum recovery device ) 是由 田晓燕 赵高楷 赵综凯 李刚 孙健 张伟 余燕 余景刚 韩佳 刘定开 崔毅 甘 于 2018-07-18 设计创作，主要内容包括：本发明提供一种石油回收装置,包括：分离箱体和收集箱体；所述分离箱体内部的一侧壁上连接有挤压模具,所述分离箱体的与所述挤压模具相对的侧壁上设置有挤压板,所述挤压板用于挤压放置于所述挤压模具中的含石油的土壤；所述收集箱体连接在所述分离箱体的底部,所述收集箱体用于收集从所述土壤中挤压出的石油及挤压后的土壤。本发明提供的石油回收装置,可以有效回收渗入土壤中的石油,进而保护环境,避免了石油的浪费。(The invention provides oil recovery devices, which comprise a separation box body and a collection box body, wherein an extrusion die is connected to the side wall inside the separation box body, an extrusion plate is arranged on the side wall of the separation box body opposite to the extrusion die and used for extruding oil-containing soil placed in the extrusion die, the collection box body is connected to the bottom of the separation box body and used for collecting oil extruded from the soil and the extruded soil.)

1, kinds of petroleum recovery devices, which are characterized by comprising a separation box body and a collection box body;

the oil-containing soil treatment device comprises a separation box body, an extrusion die is connected to the side wall in the separation box body, an extrusion plate is arranged on the side wall of the separation box body opposite to the extrusion die and used for extruding oil-containing soil placed in the extrusion die, and a collection box body is connected to the bottom of the separation box body and used for collecting oil extruded from the soil and the extruded soil.

2. The oil recovery device of claim 1, wherein the upper part of the extrusion die is hinged to the side wall of the separation tank, and the lower part of the extrusion die is hinged to the side wall of the separation tank through an th hydraulic cylinder;

the hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are respectively connected with an oil pump, the oil pump is used for controlling the hydraulic cylinder to extend and retract so as to change the inclination angle of the extrusion die relative to the vertical plane, and the oil pump is also used for controlling the second hydraulic cylinder and the third hydraulic cylinder so as to enable the extrusion plate to move and extrude the extrusion die.

3. The oil recovery device according to claim 2, wherein the extrusion die comprises a placement tank, an overflow tank, overflow holes and a filter screen, the overflow tank is arranged on both sides of the placement tank, the placement tank is used for placing oil-containing soil, the overflow tank is communicated with the placement tank through a plurality of overflow holes, and the filter screen is fixed in each overflow hole for filtering;

and the extrusion plate is fixedly provided with an extrusion block matched with the placing groove in size.

4. The oil recovery device of claim 1 wherein the collection tank includes a horizontally spaced oil storage chamber and a reservoir chamber, the oil storage chamber and the reservoir chamber being separated by an isolation device, the oil storage chamber being adapted to store oil expressed from the soil, the reservoir chamber being adapted to store the expressed soil.

5. The oil recovery device according to claim 4, wherein a wedge block is arranged at the lower end of the inside of the separation shell, a pore plate is obliquely fixed between the side of the wedge block and the inner wall of the separation shell, and a sealing flashboard is arranged at the other side of the wedge block;

the orifice plate is located the top of the oil inlet in oil storage chamber, so that the oil process that extrudes in the extrusion die the orifice plate flows in the oil storage chamber, sealed picture peg is located the top in storage chamber is used for the shutoff the feed inlet in storage chamber, soil after the extrusion drops on the inclined plane of wedge to slide along the inclined plane, process the feed inlet gets into the storage chamber.

6. The oil recovery device of claim 5, wherein the insulation device comprises a partition plate and an insulation plate, and an insulation cavity is arranged between the partition plate and the insulation plate;

a combustion container is placed in the storage cavity, an igniter is fixed on the combustion container, and the combustion container is used for combusting residual petroleum in the extruded soil.

7. The oil recovery device of claim 6, wherein the oil storage chamber is provided with an oil outlet pipe at the bottom, the oil outlet pipe is provided with a valve , the side wall of the storage chamber facing the combustion container is provided with a discharge material , and the top of the separation box body is provided with a cover plate.

8. The oil recovery device according to claim 7, wherein the bottom of the storage chamber is provided with a ball for being cushioned on the bottom of the combustion vessel so that the combustion vessel is free to move in the storage chamber and thus away from the feed port and the sealing insert plate during combustion.

9. The oil recovery device according to , wherein the bottom of the collecting tank is installed with rollers for moving.

10. The oil recovery device according to claim 2, wherein the oil pump is fixed to an outside of the separator case, and the oil pump is connected to the th hydraulic cylinder, the second hydraulic cylinder, and the third hydraulic cylinder through a main oil pipe and a branch oil pipe.

Technical Field

The invention relates to the field of petroleum transmission, in particular to an petroleum recovery device.

Background

The petroleum which is the main object of geological exploration is viscous dark brown liquid called industrial blood, which is the indispensable main energy source in the present society.

When oil is transported in oil pipelines and oil storage tanks, leakage is inevitably generated. The prior art treatment of leaked oil is typically done in situ, deep buried.

However, the physical and chemical properties of the soil are changed after the soil is polluted by petroleum, which causes environmental pollution and further harms human health, and petroleum is wasted due to the petroleum permeating into the soil, therefore, devices capable of recovering petroleum in the soil are needed.

Disclosure of Invention

The invention provides petroleum recovery devices, which can effectively recover petroleum permeating into soil, thereby protecting environment and avoiding petroleum waste.

The invention provides kinds of petroleum recovery devices, which comprise a separation box body and a collection box body;

the oil-containing soil treatment device comprises a separation box body, an extrusion die is connected to the side wall in the separation box body, an extrusion plate is arranged on the side wall of the separation box body opposite to the extrusion die and used for extruding oil-containing soil placed in the extrusion die, and a collection box body is connected to the bottom of the separation box body and used for collecting oil extruded from the soil and the extruded soil.

According to the petroleum recovery device provided by the embodiment of the invention, the extrusion die and the extrusion plate are arranged, so that petroleum in polluted soil can be extruded out, the petroleum in the soil can be recovered, the waste of the petroleum is reduced, and the environment is protected; the petroleum recovery device provided by the embodiment of the invention has the advantages of simple structure, easiness in realization and low cost.

The upper part of the extrusion die is hinged with the side wall of the separation box body, and the lower part of the extrusion die is hinged with the side wall of the separation box body through an hydraulic cylinder;

the hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are respectively connected with an oil pump, the oil pump is used for controlling the hydraulic cylinder to extend and retract so as to change the inclination angle of the extrusion die relative to the vertical plane, and the oil pump is also used for controlling the second hydraulic cylinder and the third hydraulic cylinder so as to enable the extrusion plate to move and extrude the extrusion die.

The oil recovery device comprises an extrusion die, a plurality of overflow holes and a filter screen, wherein the extrusion die comprises a placing groove, overflow grooves, the overflow holes and the filter screen, the overflow grooves are arranged on two sides of the placing groove, the placing groove is used for placing oil-containing soil, the overflow grooves are communicated with the placing groove through the overflow holes, and the filter screen for filtering is fixed in each overflow hole;

and the extrusion plate is fixedly provided with an extrusion block matched with the placing groove in size.

The oil recovery device comprises a collecting box body, an oil storage cavity and a storage cavity are horizontally separated from each other, the oil storage cavity and the storage cavity are separated from each other through an isolating device, the oil storage cavity is used for storing oil squeezed out of soil, and the storage cavity is used for storing the squeezed soil.

In the petroleum recovery device, the wedge-shaped block is arranged at the lower end in the separation shell, a pore plate is obliquely fixed between the side of the wedge-shaped block and the inner wall of the separation shell, and a sealing flashboard is arranged on the other side of the wedge-shaped block;

the orifice plate is located the top of the oil inlet in oil storage chamber, so that the oil process that extrudes in the extrusion die the orifice plate flows in the oil storage chamber, sealed picture peg is located the top in storage chamber is used for the shutoff the feed inlet in storage chamber, soil after the extrusion drops on the inclined plane of wedge to slide along the inclined plane, process the feed inlet gets into the storage chamber.

According to the oil recovery device, the isolation device comprises a partition plate and a heat insulation plate, and a heat insulation cavity is arranged between the partition plate and the heat insulation plate;

a combustion container is placed in the storage cavity, an igniter is fixed on the combustion container, and the combustion container is used for combusting residual petroleum in the extruded soil.

According to the oil recovery device, the oil outlet pipe is arranged at the bottom of the oil storage cavity, the valve is arranged on the oil outlet pipe, the discharging material is arranged on the side wall, opposite to the combustion container, of the storage cavity, and the cover plate is arranged at the top of the separation box body.

The oil recovery device is characterized in that the bottom of the storage cavity is provided with a ball bearing, and the ball bearing is used for being cushioned at the bottom of the combustion container, so that the combustion container can freely move in the storage cavity and is far away from the feeding hole and the sealing insertion plate during combustion.

According to the oil recovery device, the bottom of the collecting box body is provided with the roller for moving.

According to the oil recovery device, the oil pump is fixed outside the separation box body, and the oil pump is connected with the th hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder through the main oil pipe and the oil distribution pipe.

According to the petroleum recovery device provided by the embodiment of the invention, the extrusion die and the extrusion plate are arranged, so that petroleum in polluted soil can be extruded out, and the petroleum is separated from the extruded soil, thereby realizing the recovery of the petroleum in the soil, reducing the waste of the petroleum and protecting the environment; the petroleum recovery device provided by the embodiment of the invention has the advantages of simple structure, easiness in realization and low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, is briefly introduced in the drawings required in the description of the embodiments or the prior art, it is obvious that the drawings in the following description are embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of an oil recovery apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an extrusion die according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a front view of FIG. 2;

FIG. 5 is a front view of a compression plate provided in accordance with an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a collection box provided in the embodiment of the present invention.

Reference numerals:

100-separation box

11-extrusion die

111-placing groove

112-overflow trough

113-overflow hole

114-Filter Screen

12-extrusion plate

121-extrusion block

131 st- th hydraulic cylinder

132-second Hydraulic Cylinder

133-third Hydraulic Cylinder

14-oil pump

141-main oil pipe

142-oil distributing pipe

15-wedge block

16-orifice plate

17-sealing plugboard

18-cover plate

181-second handle

200-collecting box

21-oil storage chamber

211-oil inlet

212-flow line

2121-valve

22-storage chamber

221-feed inlet

222-Combustion Container

2221-igniter

223-discharge

2231- th handle

224-ball

231-spacer plate

232-heat insulation board

24-roller

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer and more complete, the technical solutions of the present invention will be described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.

The invention is described below in connection with specific embodiments with reference to the following drawings.

Fig. 1 is a schematic structural diagram of an oil recovery device according to an embodiment of the present invention, and referring to fig. 1, the present invention provides oil recovery devices, which include a separation tank 100 and a collection tank 200, wherein an extrusion die 11 is connected to a side wall inside the separation tank 100, an extrusion plate 12 is disposed on a side wall opposite to the extrusion die 11, the extrusion plate 12 is used for extruding oil-containing soil placed in the extrusion die 11, the collection tank 200 is connected to a bottom of the separation tank 100, and the collection tank 200 is used for collecting oil extruded from the soil and the extruded soil.

The using method of the petroleum recovery device comprises the steps of placing the petroleum-containing soil in the extrusion die 11, extruding the soil through the extrusion plate 12, enabling the soil mixed with petroleum to be wet and soft, extruding the petroleum after the soil is extruded, extruding the extruded soil to be dry, and respectively placing the petroleum and the pressed soil in the collection box body 200, thereby completing the recovery of the petroleum in the soil.

Specifically, the extrusion die 11 may be obliquely disposed so that the oil extruded flows out of the extrusion die 11, and the extrusion plate 12 is disposed in cooperation with the extrusion die 11 so that the extrusion operation is performed, which can be placed in the obliquely disposed extrusion die 11 without falling off since the oil-contaminated soil is relatively wet and soft. The extrusion die 11 may be horizontally disposed, and in this case, a hole for flowing out the oil needs to be disposed at the bottom of the extrusion die 11. The power method for driving the squeezing plate 12 to perform squeezing movement is not particularly limited in this embodiment, and a hydraulic cylinder, an air cylinder, or the like may be used.

It will be appreciated that the collection tank 200 should include at least a two-part construction for collecting oil squeezed from the soil and squeezed soil, respectively.

According to the petroleum recovery device provided by the embodiment of the invention, the extrusion die and the extrusion plate are arranged, so that petroleum in polluted soil can be extruded out, the petroleum in the soil can be recovered, the waste of the petroleum is reduced, and the environment is protected; the petroleum recovery device provided by the embodiment of the invention has the advantages of simple structure, easiness in realization and low cost.

The structure of each member will be described in detail below using a more detailed example.

With continued reference to fig. 1, the upper portion of the extrusion die 11 is fixed to the sidewall of the separation box 100 by hinge, the lower portion of the extrusion die 11 is fixed to the sidewall of the separation box 100 by hinge using the th hydraulic cylinder 131, the upper portion and the lower portion of the extrusion plate 12 are fixed to the sidewall of the separation box by hinge using the second hydraulic cylinder 132 and the third hydraulic cylinder 133, the th hydraulic cylinder 131, the second hydraulic cylinder 132 and the third hydraulic cylinder 133 are connected to the oil pump 14, the oil pump 14 is used to control the th hydraulic cylinder 131 to change the inclination angle of the extrusion die 11, and the oil pump 14 is also used to control the second hydraulic cylinder 132 and the third hydraulic cylinder 133 to move the extrusion plate 12 and extrude the extrusion die 11.

Specifically, the oil pump 14 is fixed outside the separation box 100, the oil pump 14 is connected with the hydraulic cylinder 131, the second hydraulic cylinder 132 and the third hydraulic cylinder 133 through the main oil pipe 141 and the oil distribution pipe 142, after the oil pump 14 is started, the second hydraulic cylinder 131 and the third hydraulic cylinder 132 are controlled to simultaneously push the extrusion plate 12 to move forwards, contaminated soil in the extrusion die 11 is extruded, and oil mixed in the soil is extruded out.

Fig. 2 is a schematic structural view of an extrusion die according to an embodiment of the present invention, fig. 3 is a partially enlarged view of fig. 2, fig. 4 is a front view of fig. 2, fig. 5 is a front view of an extrusion plate according to an embodiment of the present invention, and referring to fig. 2 to 4, an oil recovery apparatus according to an embodiment of the present invention includes a placement tank 111, an overflow tank 112, overflow holes 113, and a filter net 114, wherein the overflow tank 112 is disposed on both sides of the placement tank 111, the placement tank 111 is used for placing oil-containing soil, the overflow tank 112 is communicated with the placement tank 111 through a plurality of overflow holes 113, and the filter net 114 for filtering is fixed in each overflow hole 113; a pressing block 121 matched with the size of the placing groove 111 is fixed on the pressing plate 12.

The pressing plate 12 enters the inside of the placing groove 111 matched with the pressing block 121 through the pressing block 121, the polluted soil in the placing groove 111 is pressed, the petroleum mixed in the soil is pressed out and enters the overflow groove 112 along the overflow holes 113 on the two sides of the soil, and the filter screen 114 arranged in the overflow holes 113 plays a role in filtering the soil and prevents the soil from entering the overflow groove 112.

Fig. 6 is a schematic structural diagram of a collection box according to an embodiment of the present invention, and referring to fig. 1 and 6, the collection box 200 includes an oil storage chamber 21 and a material storage chamber 22, the oil storage chamber 21 and the material storage chamber 22 are separated by a separation device, the oil storage chamber 22 is used for storing oil squeezed from soil, and the material storage chamber 22 is used for storing the squeezed soil.

, a wedge block 15 is arranged at the lower end inside the separation shell 100, a pore plate 16 is obliquely fixed between the wedge block 15 side and the inner wall of the separation shell 100, a sealing insertion plate 17 is arranged at the other side of the wedge block 15, the pore plate 16 is positioned above the oil inlet 211 of the oil storage cavity 21, so that oil extruded from the extrusion die 11 flows into the oil storage cavity 21 through the pore plate 16, the sealing insertion plate 17 is positioned above the material storage cavity 22 and used for plugging the feed inlet 221 of the material storage cavity 22, and the extruded soil falls to the inner arc side of the wedge block 15 and enters the material storage cavity 22 through the feed inlet 221.

Because the extrusion die 111 is obliquely arranged, the extruded oil flows onto the obliquely arranged pore plate 16, the oil on the pore plate 16 enters the oil storage cavity 21 along the oil inlet 211 to be stored and collected, less oil remains in the extruded soil and the soil is extruded to be dry, the oil pump 14 controls the extrusion die 11 to be reversely inclined, the soil in the extrusion die falls off and enters the arc side in the wedge-shaped block 15, the sealing insertion plate 17 is opened, and the fallen soil enters the storage cavity 22 through the feed inlet 221.

, the isolation device comprises a partition 231 and a heat insulation plate 232, an insulation cavity is arranged between the partition 231 and the heat insulation plate 232, a combustion container 222 is arranged in the storage cavity 22, an igniter 2221 is fixed on the combustion container 222, and the combustion container 222 is used for combusting residual oil in the extruded soil.

The combustion container 222 is placed below the feeding hole 221, fallen soil directly enters the combustion container 222 through the feeding hole 221, when the soil in the combustion container 222 is accumulated to degrees, a small part of oil remained in the soil in the combustion container is ignited through the igniter 2221, the oil is fully combusted, then the soil in the combustion container 222 is poured out, the treated soil is cleaner, pollution to the soil is reduced, and the partition plate 231, the heat insulation plate 232 and the heat insulation cavity between the partition plate 231 and the heat insulation plate 232 have good heat insulation effect, so that the oil in the oil storage cavity 21 can be prevented from being influenced by the combustion of the combustion container 222.

On the basis of the above embodiment, the oil outlet pipe 212 is arranged at the bottom of the oil storage chamber 21, the valve 2121 is arranged on the oil outlet pipe 212, the discharging material 223 is arranged on the side wall of the storage chamber 22 facing the combustion container 222, the discharging material 223 is provided with the handle 2231, the cover plate 18 is arranged at the top of the separation box body 100, and the second handle 181 is arranged on the cover plate 18.

It will be appreciated that when there is a large amount of oil in the oil storage chamber 21, the valve 2121 is opened, and the collected oil flows out through the oil outlet pipe 212 to be treated intensively, after the oil remaining in the soil in the combustion container 222 is sufficiently burned, the soil is poured out through the discharge port 223 to reduce the pollution to the soil, and the cover plate 18 and the second handle 181 function to facilitate the addition of the polluted soil to the extrusion mold 11 by the worker.

, the ball 224 is disposed at the bottom of the storage chamber 22, and is used to facilitate the movement of the combustion container 222 in the storage chamber 22, so that the combustion container 22 is far from the feeding hole 221 and the sealing insert plate 17 during combustion, in order to avoid the damage of the combustion to the sealing insert plate 17 on the feeding hole 221 during actual combustion, and the combustion container 222 is pulled out distance to stagger the top of the combustion container from the feeding hole 221, the ball 224 can make the movement of the combustion container 222 more labor-saving.

On the basis of the above embodiment, the bottom of the collection box 200 is mounted with the roller 24 for movement. The arrangement of the pipe wheel 24 enables the petroleum recovery device to move more conveniently and labor-saving, and the petroleum recovery device can process polluted soil at different positions in time.

In the embodiment of the invention, the wedge-shaped block 15 is made of high-strength high-manganese steel to ensure the strength, the partition plate 231 is made of heat-resistant steel 0Cr25Ni20, the heat insulation plate 232 is made of No. 45 steel, and heat insulation fiber layers are arranged in the heat insulation plate to ensure the heat resistance.

The working principle of the petroleum recovery device provided by the embodiment of the invention is as follows:

firstly, the cover plate 18 is opened through the second handle 181, the polluted soil is placed into the placing groove 111 in the extrusion die 11, and the soil is mixed with a large amount of petroleum and is wet and soft, so that the polluted soil can be placed in the obliquely arranged placing groove 111 without falling off;

then the oil pump 14 is started, the oil pump 14 controls the second hydraulic cylinder 131 and the third hydraulic cylinder 132 to simultaneously push the extrusion plate 12 to move forward, the extrusion block 121 on the extrusion plate 12 also moves forward and enters the placing groove 111 matched with the extrusion block to extrude the polluted soil in the placing groove 111, the oil mixed in the soil is extruded out and enters the overflow groove 112 along the overflow holes 113 on both sides of the oil, the filter screen 114 arranged in the overflow hole 113 plays a role of filtering the soil to prevent the soil from entering the overflow groove 112, because the overflow groove 112 and the extrusion die 111 are obliquely arranged, the oil entering the overflow groove 112 flows onto the obliquely arranged pore plate 16, and the oil on the pore plate 16 enters the oil storage cavity 21 along the oil inlet 211 to be stored and collected;

less petroleum is remained in the extruded soil, the soil is extruded to be dry, then the oil pump 14 is started to control the hydraulic cylinder 131 to contract, the extrusion die 11 is inclined reversely, the internal soil falls into the arc side in the wedge-shaped block 15, the sealing inserting plate 17 is opened, and the fallen soil enters the combustion container 222 through the feeding hole 221;

when the soil in the combustion container 222 is accumulated to , the discharging 223 is opened through the handle 2231, the sealing inserting plate 17 is inserted, the combustion container 222 is pulled out section distance, the top of the combustion container is staggered with the feeding hole 221, a small part of oil remained in the soil in the combustion container is ignited through the igniter 2221, the oil is fully combusted, then the soil in the combustion container 222 is poured out, the treated soil is cleaner, the pollution to the soil is reduced, the arranged partition plate 231, the heat insulation plate 232 and the heat insulation cavity between the partition plate 231 and the heat insulation plate 232 have good heat insulation effect, the influence of the combustion container 222 on the oil in the oil storage cavity 21 can be avoided, after more oil is in the oil storage cavity 21, the valve 2121 is opened, the collected oil flows out through the oil outlet pipe 212, the oil is intensively treated, the recovery of the oil in the soil is realized, the waste of the oil is reduced, and the environment is protected.

The oil recovery device has the advantages that the contaminated soil in the placing groove is extruded through the extrusion blocks on the extrusion plates, the oil mixed in the soil is extruded out and enters the overflow grooves along the overflow holes on the two sides of the soil, the filter screen arranged in the overflow holes plays a role of filtering the soil to prevent the soil from entering the overflow grooves, the oil entering the overflow grooves can flow to the inclined hole plates, the oil on the hole plates can enter the oil storage cavity of the collection box body along the oil outlet to be stored and collected, after more oil exists in the oil storage cavity, the collected oil is discharged through the valve and is subjected to centralized treatment, so that the oil in the soil is recovered, the waste of the oil is reduced, the environment is protected, the oil extruded soil in the extrusion die is reversely inclined through the oil pump, the soil in the extrusion die can fall to the side of the arc in the wedge-shaped block, the fallen soil enters the combustion container through the feeding hole, the combustion container is pulled out of the section, the feeding hole is staggered from the top of the ignition die, a small part of the oil remained in the soil in the wedge-shaped block can be fully combusted, the soil in the combustion container, the soil is completely combusted soil, and the soil is treated, and the soil is completely, so.

According to the petroleum recovery device provided by the embodiment of the invention, the extrusion die and the extrusion plate are arranged, so that petroleum in polluted soil can be extruded out, and the petroleum is separated from the extruded soil, thereby realizing the recovery of the petroleum in the soil, reducing the waste of the petroleum and protecting the environment; the petroleum recovery device provided by the embodiment of the invention has the advantages of simple structure, easiness in realization and low cost.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, are used to indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and thus, are not to be construed as limiting the invention.

Thus, a feature defined as "", "second" may explicitly or implicitly include or more of that feature.

Unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are used herein to define , and may include, for example, a fixed connection, a removable connection, or , a mechanical connection, an electrical connection, or a communication, either directly or indirectly through an intermediary, allowing communication between two elements or the interaction of two elements.

In the present invention, unless expressly stated or limited otherwise, "above" or "below" a second feature includes features directly contacting the second feature and may also include features directly contacting the second feature but through another feature in between, further, features "above", "over" and "above" the second feature includes features directly above and obliquely above the second feature or merely means that the feature is at a higher level than the second feature, features "below", "beneath" and "beneath" the second feature includes features directly below and obliquely below the second feature, or merely means that the feature is at a lower level than the second feature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.