阅读说明：本技术 一种岩板导流能力检测用压裂支撑剂供储装置 (Fracturing propping agent supply and storage device for rock plate flow conductivity detection ) 是由 黄静云 罗志锋 何天舒 韩明哲 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种岩板导流能力检测用压裂支撑剂供储装置,包括底板、罐体、立板、液压杆、第一电机、第一输出齿轮、传动齿轮、连接轴、端面齿轮、固定板、固定杆、转轴、搅拌杆、调节齿轮、下料管、第二电机、第二输出齿轮、限位板、导板、延伸轴、侧板、螺杆、螺母、横杆、转板、下料板、套轴、行走轮和齿轮轴。本发通过罐体的转动方便将压裂支撑剂输送至罐体内部,有利于输送设备对压裂支撑剂的储存,方便将压裂支撑剂储存在罐体内部；通过搅拌杆的转动方便罐体内的压裂支撑剂的搅拌,方便压裂支撑剂供应时的均匀下料；通过转板的转动方便调节转板与下料板之间的位置,有利于调节压裂支撑剂下料时的输送速度,方有利于压裂支撑剂的输送。(The invention discloses a fracturing propping agent supply and storage device for rock plate diversion capability detection, which comprises a bottom plate, a tank body, a vertical plate, a hydraulic rod, a first motor, a first output gear, a transmission gear, a connecting shaft, an end face gear, a fixing plate, a fixing rod, a rotating shaft, a stirring rod, an adjusting gear, a discharging pipe, a second motor, a second output gear, a limiting plate, a guide plate, an extension shaft, a side plate, a screw rod, a nut, a cross rod, a rotating plate, a discharging plate, a sleeve shaft, a traveling wheel and a gear shaft. The fracturing propping agent is conveniently conveyed to the interior of the tank body through the rotation of the tank body, so that the fracturing propping agent can be conveniently stored by conveying equipment, and the fracturing propping agent can be conveniently stored in the tank body; the fracturing propping agent in the tank body can be conveniently stirred through the rotation of the stirring rod, and the uniform blanking is convenient when the fracturing propping agent is supplied; the position between convenient regulation commentaries on classics board and the unloading board through the rotation of changeing the board is favorable to adjusting the conveying speed when fracturing propping agent unloading, and the side is favorable to the transport of fracturing propping agent.)

1. A rock plate conductivity detects and supplies storage device with fracturing propping agent, its characterized in that: the tank comprises a tank body (2) on the top surface of a bottom plate (1), a rotating mechanism, a stirring mechanism and an adjusting mechanism;

the rotating mechanism comprises a vertical plate (3), a hydraulic rod (4) and a first motor (5), the top surface of the bottom plate (1) is fixedly connected with the vertical plate (3), the top surface of the bottom plate (1) is rotatably connected with the hydraulic rod (4), the top of the vertical plate (3) is fixedly connected with the first motor (5), the output end of the first motor (5) is fixedly connected with a first output gear (6), the first output gear (6) is meshed with a transmission gear (7), the transmission gear (7) is fixedly connected with the end part of a connecting shaft (8), and the middle part of the connecting shaft (8) is fixedly connected with an end face gear (9);

the stirring mechanism comprises a fixing plate (10) and a fixing rod (11), the inner part of the tank body (2) is fixedly connected with the fixing plate (10) and the fixing rod (11) respectively, the fixing plate (10) and the fixing rod (11) are connected with a rotating shaft (12) in a penetrating manner, the rotating shaft (12) is fixedly connected with a plurality of stirring rods (13), the bottom surface of the bottom plate (1) is rotatably connected with a walking wheel (28), the middle part of the bottom plate (1) is fixedly connected with a discharging pipe (15), and the top end of the discharging pipe (15) is sleeved with a sleeve shaft (27); the adjusting mechanism comprises a cross rod (24), a rotating plate (25) and a blanking plate (26), the inside of the port of the tank body (2) is fixedly connected with the connecting plate, the cross rod (24) is fixedly connected with the blanking plate (26), and the cross rod (24) is rotatably connected with the rotating plate (25) with the blanking plate (26).

2. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: two vertical plates (3) are respectively arranged on two sides of the top surface of the bottom plate (1), the vertical plates (3) are rotatably connected with the middle of the tank body (2), and a connecting shaft (8) penetrating through the tank body (2) is arranged between the bottom surface of the tank body (2) and the fixing plate (10).

3. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: the rotary shaft (12) is rotatably connected with the fixed plate (10) and the fixed rod (11), the adjusting gear (14) fixedly connected with the end part of the rotary shaft (12) is positioned between the tank body (2) and the fixed plate (10), and the adjusting gear (14) is meshed with the end face gear (9).

4. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: riser (3) lateral wall respectively with limiting plate (18) and baffle (19) fixed connection, the quantity of baffle (19) is two and is located two riser (3) inner walls respectively, the spout inside that baffle (19) were seted up with extend axle (20) sliding connection, extend axle (20) and two other movable limiting plate (18) fixed connection, two limiting plate (18) top surface and curb plate (21) fixed connection, curb plate (21) and screw rod (22) through connection, and screw rod (22) tip and nut (23) threaded connection.

5. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: bottom plate (1) bottom is rotated with four walking wheels (28) and is connected, blanking pipe (15) at bottom plate (1) middle part are L shape structure, blanking pipe (15) bottom and sleeve axle (27) threaded connection, and sleeve axle (27) contact has blanking board (26).

6. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: the port of the tank body (2) is fixedly connected with a blanking plate (26), the blanking plate (26) is rotatably connected with the tank body (2) through a rotating plate (25), and the rotating plate (25) and the blanking plate (26) are provided with two fan-shaped openings with the same size.

7. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: the side wall of the tank body (2) is rotatably connected with the end part of the hydraulic rod (4), the side wall is rotatably connected with the transmission gear (7), and the transmission gear (7) is meshed with the first output gear (6).

8. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: limiting plates (18) between the vertical plates (3) are in contact with the side wall of the port of the tank body (2), the other two limiting plates (18) are in contact with the other side of the port of the tank body (2), and the two limiting plates (18) are respectively in sliding connection with the two guide plates (19).

9. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: the top surface of the bottom plate (1) is fixedly connected with a second motor (16), the output end of the second motor (16) is fixedly connected with a second output gear (17), and the second output gear (17) is meshed with a gear ring at the edge of the rotating plate (25).

10. The fracturing propping agent supply and storage device for rock plate conductivity detection as claimed in claim 1, characterized in that: the utility model discloses a jar body, including jar body (2), fixed plate (10) and dead lever (11), pivot (12) evenly distributed between fixed plate (10) and dead lever (11) has a plurality of puddler (13), jar body (2) outer wall rotates with gear shaft (29) to be connected, and gear shaft (29) tip and commentaries on classics board (25) meshing are connected.

Technical Field

The invention relates to a supply and storage device, in particular to a fracturing propping agent supply and storage device for rock plate diversion capability detection, and belongs to the technical field of fracturing propping agent application.

Background

The fracturing propping agent is a ceramic particle product with high fracturing strength, is mainly used for underground support of oil fields to increase the yield of petroleum and natural gas, belongs to an environment-friendly product, is prepared by sintering various raw materials such as high-quality bauxite by using ceramics, is a substitute of medium-low strength propping agents such as natural quartz sand, glass balls, metal balls and the like, has good effect on increasing the yield of the petroleum and natural gas, when the petroleum and natural gas deep well is exploited, a high-closing-pressure low-permeability ore bed cracks an oil-gas rock stratum after fracturing treatment, oil gas is collected from a channel formed by the cracks, a ceramsite supporting material enters the stratum along with a high-pressure solution and is filled in the rock stratum cracks to play a role of supporting the cracks and not closing the cracks due to stress release, thereby keeping high flow conductivity, leading the oil gas to be smooth and increasing the yield, practices prove that the yield of oil wells fractured by using the ceramsite supporting agent can be increased by 30 to 50, and the service life of the oil and gas well can be prolonged.

The existing fracturing propping agent is used for fracturing modification of an oil field high-pressure oil-gas layer, and for the fracturing propping agent for rock plate conductivity detection, the fracturing propping agent needs to be stored when being used, and is not beneficial to conveying the propping agent to the inside of a tank body when being stored, so that the operation is inconvenient; the adjustment of the position of the tank body is not facilitated when the fracturing propping agent is supplied, and the uniform blanking of the propping agent is also not facilitated when the fracturing propping agent is supplied; when the proppant is supplied, the speed of blanking is not easy to adjust, and the adjustment is not easy to carry out. Therefore, the fracturing propping agent supply device for rock plate conductivity detection is provided for solving the problems.

Disclosure of Invention

The invention aims to solve the problems and provide a fracturing propping agent supply and storage device for rock plate conductivity detection.

The invention achieves the aim through the following technical scheme that the fracturing propping agent supply and storage device for rock plate diversion capacity detection comprises a tank body on the top surface of a bottom plate, a rotating mechanism, a stirring mechanism and an adjusting mechanism;

the rotating mechanism comprises a vertical plate, a hydraulic rod and a first motor, the top surface of the bottom plate is fixedly connected with the vertical plate, the top surface of the bottom plate is rotatably connected with the hydraulic rod, the top of the vertical plate is fixedly connected with the first motor, the output end of the first motor is fixedly connected with a first output gear, the first output gear is meshed with a transmission gear, the transmission gear is fixedly connected with the end part of a connecting shaft, and the middle part of the connecting shaft is fixedly connected with an end face gear;

the stirring mechanism comprises a fixed plate and a fixed rod, the inner part of the tank body is respectively fixedly connected with the fixed plate and the fixed rod, the fixed plate and the fixed rod are connected with a rotating shaft in a penetrating way, the rotating shaft is fixedly connected with a plurality of stirring rods, the bottom surface of the bottom plate is rotatably connected with the traveling wheels, the middle part of the bottom plate is fixedly connected with the blanking pipe, and the top end of the blanking pipe is sleeved with the sleeve shaft;

the adjusting mechanism comprises a cross rod, a rotating plate and a discharging plate, the inside of the port of the tank body is fixedly connected with the connecting plate, the cross rod is fixedly connected with the discharging plate, and the cross rod is rotatably connected with the rotating plate.

Preferably, two vertical plates are respectively arranged on two sides of the top surface of the bottom plate, the two vertical plates are rotatably connected with the middle part of the tank body, and a connecting shaft penetrating through the tank body is arranged between the bottom surface of the tank body and the fixing plate.

Preferably, the rotating shaft is rotatably connected with the fixed plate and the fixed rod, the adjusting gear fixedly connected with the end part of the rotating shaft is positioned between the tank body and the fixed plate, and the adjusting gear is meshed with the end face gear.

Preferably, the riser lateral wall respectively with limiting plate and baffle fixed connection, the quantity of baffle is two and is located two riser inner walls respectively, the spout inside that the baffle was seted up with extend an axle sliding connection, extend axle and two other movable limiting plate fixed connection, two limiting plate top surface and curb plate fixed connection, curb plate and screw rod through connection, and screw rod tip and nut threaded connection.

Preferably, the bottom of the bottom plate is rotatably connected with the four traveling wheels, the discharging pipe in the middle of the bottom plate is of an L-shaped structure, the bottom end of the discharging pipe is in threaded connection with the sleeve shaft, and the sleeve shaft is in contact with the discharging plate.

Preferably, the port of the tank body is fixedly connected with a blanking plate, the blanking plate is rotatably connected with the tank body through a rotating plate, and the rotating plate and the blanking plate are provided with two fan-shaped openings with the same size.

Preferably, the side wall of the tank body is rotatably connected with the end part of the hydraulic rod, the side wall is rotatably connected with the transmission gear, and the transmission gear is meshed with the first output gear.

Preferably, the limiting plates between the vertical plates are in contact with the side wall of the port of the tank body, the other two limiting plates are in contact with the other side of the port of the tank body, and the two limiting plates are respectively in sliding connection with the two guide plates.

Preferably, the top surface of the bottom plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second output gear, and the second output gear is meshed with a gear ring at the edge of the rotating plate.

Preferably, the fixed plate and the fixed rod are respectively located at two ends of the interior of the tank body, a plurality of stirring rods are uniformly distributed on a rotating shaft between the fixed plate and the fixed rod, the outer wall of the tank body is rotatably connected with a gear shaft, and the end part of the gear shaft is meshed with the rotating plate.

The invention has the beneficial effects that:

1. the fracturing propping agent conveying device is simple in structure and convenient to operate, conveying the fracturing propping agent to the interior of the tank body is facilitated through rotation of the tank body, when the fracturing propping agent is stored in the tank body, conveying equipment with different heights conveys the fracturing propping agent to the interior of the tank body, and the fracturing propping agent is conveniently stored in the tank body through the design of the blanking plate and the rotating plate, so that the fracturing propping agent is conveniently stored;

2. the stirring rod is rotated to facilitate the stirring of the fracturing propping agent in the tank body, so that the uniform conveying of the propping agent is facilitated, and the uniform blanking during the supply of the fracturing propping agent is facilitated;

3. according to the invention, the position between the rotating plate and the blanking plate can be conveniently adjusted through the rotation of the rotating plate, so that the conveying speed of the fracturing propping agent during blanking can be conveniently adjusted, the adjustment can be conveniently carried out as required, and the conveying of the fracturing propping agent is facilitated.

Drawings

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

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic bottom view of the tank of the present invention.

In the figure: 1. the automatic feeding device comprises a bottom plate, 2, a tank body, 3, a vertical plate, 4, a hydraulic rod, 5, a first motor, 6, a first output gear, 7, a transmission gear, 8, a connecting shaft, 9, a face gear, 10, a fixing plate, 11, a fixing rod, 12, a rotating shaft, 13, a stirring rod, 14, an adjusting gear, 15, a feeding pipe, 16, a second motor, 17, a second output gear, 18, a limiting plate, 19, a guide plate, 20, an extending shaft, 21, a side plate, 22, a screw rod, 23, a nut, 24, a cross rod, 25, a rotating plate, 26, a feeding plate, 27, a sleeve shaft, 28, a travelling wheel, 29 and a gear shaft.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Referring to fig. 1-4, a fracturing propping agent supply and storage device for rock plate conductivity detection comprises a tank body 2 on the top surface of a bottom plate 1, a rotating mechanism, a stirring mechanism and an adjusting mechanism;

the rotating mechanism comprises a vertical plate 3, a hydraulic rod 4 and a first motor 5, the top surface of the bottom plate 1 is fixedly connected with the vertical plate 3, the top surface of the bottom plate 1 is rotatably connected with the hydraulic rod 4, the top of the vertical plate 3 is fixedly connected with the first motor 5, the output end of the first motor 5 is fixedly connected with a first output gear 6, the first output gear 6 is meshed with a transmission gear 7, the transmission gear 7 is fixedly connected with the end part of a connecting shaft 8, and the middle part of the connecting shaft 8 is fixedly connected with an end face gear 9;

the stirring mechanism comprises a fixed plate 10 and a fixed rod 11, the inner part of the tank body 2 is respectively fixedly connected with the fixed plate 10 and the fixed rod 11, the fixed plate 10 and the fixed rod 11 are connected with a rotating shaft 12 in a penetrating way, the rotating shaft 12 is fixedly connected with a plurality of stirring rods 13, the bottom surface of the bottom plate 1 is rotatably connected with walking wheels 28, the middle part of the bottom plate 1 is fixedly connected with a blanking pipe 15, and the top end of the blanking pipe 15 is sleeved with a sleeve shaft 27;

the adjusting mechanism comprises a cross rod 24, a rotating plate 25 and a blanking plate 26, the inside of the port of the tank body 2 is fixedly connected with the connecting plate, the cross rod 24 is fixedly connected with the blanking plate 26, and the cross rod 24 is rotatably connected with the rotating plate 25 with the blanking plate 26.

Two vertical plates 3 are respectively arranged on two sides of the top surface of the bottom plate 1, the two vertical plates 3 are rotatably connected with the middle part of the tank body 2, and a connecting shaft 8 penetrating through the tank body 2 is arranged between the bottom surface of the tank body 2 and the fixing plate 10, so that the tank body 2 can rotate conveniently, and the fracturing propping agent can be stored conveniently; the rotating shaft 12 is rotatably connected with the fixed plate 10 and the fixed rod 11, the adjusting gear 14 fixedly connected with the end part of the rotating shaft 12 is positioned between the tank body 2 and the fixed plate 10, and the adjusting gear 14 is meshed and connected with the end face gear 9, so that the rotating shaft 12 can rotate conveniently, and the fracturing propping agent can be stirred conveniently; the side walls of the vertical plates 3 are fixedly connected with a limiting plate 18 and a guide plate 19 respectively, the number of the guide plates 19 is two, the two guide plates are respectively positioned on the inner walls of the two vertical plates 3, the inner part of a sliding groove formed in each guide plate 19 is in sliding connection with an extending shaft 20, each extending shaft 20 is fixedly connected with the other two movable limiting plates 18, the top surfaces of the two limiting plates 18 are fixedly connected with a side plate 21, the side plate 21 is in penetrating connection with a screw rod 22, and the end part of the screw rod 22 is in threaded connection with a nut 23, so that the limiting of the tank body 2 is; the bottom of the bottom plate 1 is rotatably connected with four traveling wheels 28, a blanking pipe 15 in the middle of the bottom plate 1 is of an L-shaped structure, the bottom end of the blanking pipe 15 is in threaded connection with a sleeve shaft 27, and the sleeve shaft 27 is in contact with a blanking plate 26, so that the position of the tank body 2 can be conveniently adjusted, and the supply of fracturing propping agents is convenient; the port of the tank body 2 is fixedly connected with a blanking plate 26, the blanking plate 26 is rotatably connected with the tank body 2 through a rotating plate 25, and the rotating plate 25 and the blanking plate 26 are both provided with two fan-shaped openings with the same size, so that the rotating plate 25 can rotate conveniently, and the fracturing propping agent can be blanked conveniently; the side wall of the tank body 2 is rotationally connected with the end part of the hydraulic rod 4, the side wall is rotationally connected with the transmission gear 7, and the transmission gear 7 is meshed with the first output gear 6, so that the tank body 2 can rotate conveniently and the rotating shaft 12 can be driven to rotate conveniently; the limiting plates 18 between the vertical plates 3 are contacted with the side wall of the port of the tank body 2, the other two limiting plates 18 are contacted with the other side of the port of the tank body 2, and the two limiting plates 18 are respectively in sliding connection with the two guide plates 19, so that the limiting of the tank body 2 is facilitated, and the stability of the tank body 2 is conveniently improved; the top surface of the bottom plate 1 is fixedly connected with a second motor 16, the output end of the second motor 16 is fixedly connected with a second output gear 17, and the second output gear 17 is meshed with a gear ring at the edge of the rotating plate 25, so that the blanking speed of the fracturing propping agent can be conveniently adjusted, and the operation is convenient; the fixed plate 10 and the fixed rod 11 are respectively positioned at two ends of the inner part of the tank body 2, a plurality of stirring rods 13 are uniformly distributed on the rotating shaft 12 between the fixed plate 10 and the fixed rod 11, the outer wall of the tank body 2 is rotatably connected with the gear shaft 29, and the end part of the gear shaft 29 is meshed with the rotating plate 25, so that the rotating plate 25 can rotate conveniently.

When the fracturing propping agent is used, firstly, an electrical element in the fracturing propping agent device is externally connected with a power supply and a control switch, when the fracturing propping agent is fractured and stored, the tank body 2 is driven to rotate between the two vertical plates 3 by shortening the hydraulic rod 4, after the tank body 2 is driven to rotate around the middle part of the tank body 2, the port of the tank body 2 is positioned at the top, the fracturing propping agent is conveyed into the tank body 2 through conveying equipment, the rotating plate 25 is driven to rotate between the tank body 2 and the blanking plate 26 by the rotating gear shaft 29, the gear shaft 29 enables the rotating plate 25 to rotate between the blanking plate 26 and the rotating plate 25, the sector opening between the blanking plate 26 and the rotating plate 25 is blocked, and the tank body 2 is driven to rotate by extending the hydraulic rod 4, so that;

by moving the two movable limiting plates 18, the limiting plates 18 drive the extension shaft 20 to slide between the guide plates 19, the two limiting plates 18 enable the end parts of the tank body 2 to abut against the fixedly connected limiting plates 18, the screw rod 22 penetrates through the side plates 21, the nut 23 is screwed tightly, the tank body 2 is limited, the stability of the tank body 2 during movement is improved, the tank body 2 is convenient to move through the design of the travelling wheel 28, when the tank body 2 rotates to a vertical position, the first output gear 6 is meshed with the transmission gear 7, the second output gear 17 is meshed with the rotating plate 25, when a fracturing propping agent needs to be supplied, the sleeve shaft 27 vertically moves after rotating at the top end of the blanking pipe 15 by rotating the sleeve shaft 27, the sleeve shaft 27 is enabled to contact with the blanking plate 26, the second motor 16 drives the second output gear 17 to rotate, the rotating plate 25 is driven by the second output gear 17 to rotate, the rotating plate 25 rotates between the blanking plate 26 and the cross rod 24, after the two sector openings on the rotating plate 25 and the blanking plate 26 are overlapped with each other, the fracturing propping agent is conveniently conveyed, so that the fracturing propping agent is conveyed through the sleeve shaft 27 and the blanking pipe 15, and the conveying speed of the fracturing conveyer is conveniently adjusted by adjusting the rotating angle of the rotating plate 25;

when carrying, drive first output gear 6 through first motor 5 and rotate, and then drive gear 7 and rotate the back, drive connecting axle 8 and rotate, connecting axle 8 drives face gear 9 and rotates, and then drive adjusting gear 14 and rotate, adjusting gear 14 drives pivot 12 and rotates between fixed plate 10 and dead lever 11, drive puddler 13 and rotate the back and stir the fracturing propping agent, be favorable to the even transport of fracturing propping agent, improved also to be listed as the even transport when propping agent supplies from the internal 2 of jar, the problem of fracturing propping agent jam jar body 2 ports when avoiding carrying.

It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.