阅读说明：本技术 一种生物菌肥发酵罐及其发酵工艺 (Biological bacterial fertilizer fermentation tank and fermentation process thereof ) 是由 王胜 于 2020-07-23 设计创作，主要内容包括：本发明提出了一种生物菌有机肥发酵罐及其发酵工艺,该发酵罐包括有底座,以及多个上下叠放安装在底座上的发酵筒,顶部的发酵筒的顶口上安装有顶盖,顶盖上开设有进料口,底部的发酵筒朝一侧设有排料嘴。运输装置的导向座上安装有可来回移动的滑动座,导向座一端安装有驱动电机,驱动电机驱动连接的滚珠丝杆与滑动座匹配连接。滑动座上铰接有升降组件,升降组件顶部的支撑板上安装有料斗以及驱动料斗翻转的翻转气缸。本发明的运输装置上的料斗可由升降组件驱动升降,料斗还跟随滑动座在导向座上滑动,一个运输装置可对一排发酵罐装入有机混合物,大大减少的运输装置的数量,采购和维护成本低,节省了运输装置的使用成本。(The invention provides a biological bacterium organic fertilizer fermentation tank and a fermentation process thereof. The guide seat of the conveying device is provided with a sliding seat capable of moving back and forth, one end of the guide seat is provided with a driving motor, and a ball screw which is in driving connection with the driving motor is in matching connection with the sliding seat. Articulated on the sliding seat have a lifting unit, install the upset cylinder of hopper and drive hopper upset in the backup pad at lifting unit top. The hopper on the conveying device can be driven by the lifting assembly to lift, the hopper also slides on the guide seat along with the sliding seat, one conveying device can load organic mixtures into a row of fermentation tanks, the number of the conveying devices is greatly reduced, the purchase and maintenance cost is low, and the use cost of the conveying device is saved.)

1. A biological bacteria organic fertilizer fermentation tank, which is arranged on the ground side by side; the fermentation tank comprises a base (1) and a plurality of fermentation cylinders (2) which are stacked up and down and installed on the base (1), wherein the fermentation cylinders (2) are communicated up and down; a top cover (3) is arranged on the top opening of the fermentation cylinder (2) at the top, a feed port (4) is formed in the top cover (3), and a cover plate (5) is covered on the feed port (4); a material discharging nozzle (6) is arranged on one side of the fermentation cylinder (2) at the bottom, and a baffle (7) is arranged on the material discharging nozzle (6); a containing chamber (8) is formed in the base (1), a stirring motor (9) is installed in the containing chamber (8), a stirring shaft (10) is connected with the main shaft of the stirring motor (9) upwards, the stirring shaft (10) penetrates through the base (1) and then extends into the fermentation cylinder (2), and a plurality of stirring rods (11) are arranged on the stirring shaft (10); the conveying device comprises a guide seat (12) located beside a base (1), a sliding seat (13) capable of moving back and forth is mounted on the guide seat (12), a driving motor (14) is mounted at one end of the guide seat (12), a main shaft of the driving motor (14) is connected with a ball screw (15), and the ball screw (15) is connected with the sliding seat (13) in a matched mode; articulated on sliding seat (13) have lifting unit, lifting unit top articulates there is backup pad (16), install hopper (17) and upset cylinder (18) of drive hopper (17) upset on backup pad (16).

2. The biological bacteria organic fertilizer fermentation tank of claim 1, wherein the lifting assembly comprises a plurality of groups of scissor assemblies hinged up and down and a lifting cylinder (19) hinged on the bottom scissor assembly; the scissor assembly comprises two pairs of scissor arms (20) which are hinged with each other, and a connecting shaft (21) is arranged between the two pairs of scissor arms (20) in a penetrating way; through holes (22) are formed in two ends of each scissors fork arm (20), and rotating shafts (23) penetrate through the through holes (22) of the scissors fork arms (20) of the upper and lower adjacent scissors fork assemblies.

3. The biological bacteria organic fertilizer fermentation tank as claimed in claim 2, wherein the sliding seat (13) is a frame structure, a T-shaped sliding block (24) is arranged on the downward sliding seat (13), and the sliding block (24) is connected with a ball screw (15) in a matching way; hinge holes (25) are formed in two sides of the inner wall of the sliding seat (13) close to the front end, sliding grooves (26) are formed in the rear half parts of the two sides of the inner wall of the sliding seat (13), and hinge shafts (27) penetrate through holes (22) in a scissor arm (20) of the bottom scissor assembly and the hinge holes (25) or the sliding grooves (26); support arm (28) are installed to the scissors subassembly rear side of bottom, lift cylinder (19) bottom articulates in sliding seat (13) rear side, the piston rod top of lift cylinder (19) articulates on support arm (28).

4. The biological bacterium organic fertilizer fermentation tank as claimed in claim 3, wherein the support plate (16) is of a frame structure, hinge holes (25) are formed in two sides of the inner wall of the support plate (16) near the rear end, sliding grooves (26) are formed in the front half parts of the two sides of the inner wall of the support plate (16), and hinge shafts (27) penetrate through the through holes (22) and the hinge holes (25) or the sliding grooves (26) in the scissor arms (20) of the top scissor assembly; a connecting arm (29) is arranged at the bottom of the supporting plate (16), the overturning cylinder (18) is hinged to the connecting arm (29), and the top of a piston rod of the overturning cylinder (18) is hinged to the bottom of the hopper (17); a pair of hinged seats (30) is arranged on the front side of the top surface of the supporting plate (16); hopper (17) bottom is equipped with dwang (31) forward, dwang (31) articulate on articulated seat (30).

5. The biological bacterium organic fertilizer fermentation tank as claimed in claim 1, wherein a plurality of said stirring rods (11) are arranged on the stirring shaft (10) in parallel, and the positions of a plurality of said stirring rods (11) are staggered; the stirring rod (11) is provided with a plurality of stirring sheets (32).

6. The biological bacterium organic fertilizer fermentation tank as claimed in claim 1, wherein an inlet (33) is formed in one side of the base (1), and a door plate (34) is hinged to the base (1) at the position of the inlet (33).

7. The biological bacterium organic fertilizer fermentation tank as claimed in claim 1, wherein the peripheries of the base (1), the fermentation cylinder (2) and the top cover (3) are provided with mounting blocks (35) outwards, mounting holes (36) are formed in the mounting blocks (35), and connecting bolts (37) penetrate through the mounting holes (36).

8. The biological bacterium organic fertilizer fermentation tank as claimed in claim 1, wherein the top cover (3) is provided with an exhaust nozzle (38), and the exhaust nozzle (38) is provided with an exhaust valve (39).

9. A fermentation process of a biological bacterial organic fertilizer, which adopts a fermentation tank of the biological bacterial organic fertilizer as claimed in any one of claims 1 to 8, and comprises the following steps,

firstly, preparing organic mixtures such as livestock manure, crop stalk saving and the like, and a zymophyte agent;

secondly, the prepared organic mixture and the fermentation inoculant are loaded into a hopper (17) on the fermentation tank by using a forklift, and a conveying device is started to pour the organic mixture and the fermentation inoculant in the hopper (17) into the fermentation cylinder (2);

thirdly, starting a stirring motor (9), wherein the stirring motor (9) drives a stirring shaft (10) to uniformly stir the organic mixture and the fermentation inoculum in the stirring cylinder (2), so that the organic mixture and the fermentation inoculum are fermented in the fermentation cylinder (2) by self, the fermentation period is not less than two weeks, and in the fermentation process, the stirring motor (9) drives the stirring shaft (10) to stir the organic mixture in the fermentation cylinder (2) at least three times;

fourthly, after the fermentation of the organic mixture in the fermentation cylinder (2) is finished, the preparation of the organic fertilizer is finished, and a discharge nozzle (6) on the fermentation cylinder (2) is opened to discharge the organic fertilizer in the fermentation cylinder (2) outwards.

Technical Field

The invention relates to the technical field of biological bacterial manure production, in particular to a biological bacterial manure fermentation tank and a fermentation process thereof.

Background

The preparation is accomplished to the production biological bacterial manure of enterprise at present adopts the fermentation cylinder more, and the fermentation cylinder is installed subaerial, need follow the fermentation cylinder apical opening and add the organic mixture, and the fertilizer after the fermentation can be followed the fermentation cylinder lower half and discharged, and agitator motor is installed to the bottom of fermentation cylinder, and agitator motor driven (mixing) shaft can stir the organic mixture of fermentation in-process in stretching into the churn. The top opening of the fermenter is spaced from the ground, and a transport device is required to load the organic mixture into the fermenter. The conveyer is installed to every fermentation cylinder one side to the fermentation cylinder of current enterprise's production usefulness, but conveyer's hopper oscilaltion utilizes the hopper to pack organic mixture into in the fermentation cylinder. Each fermenter is equipped with a transport device, which is used each time the mixed organic matter is loaded, the frequency of use of the transport device is not high, and frequent maintenance is required, which results in a high use cost of the transport device. In view of the above problems, we have invented a biological bacteria organic fertilizer fermentation tank and a fermentation process thereof, wherein a transportation device is arranged beside a row of fermentation tanks, the transportation device can load mixed organic matters into the fermentation tanks from the top openings of the fermentation tanks, compared with the prior art that each fermentation tank is provided with the transportation device, the invention greatly reduces the number of the transportation devices, has low purchase and maintenance cost, and saves the use cost of the transportation devices.

Disclosure of Invention

The invention provides a biological bacterium organic fertilizer fermentation tank and a fermentation process thereof.

The technical scheme of the invention is realized as follows: a biological bacteria organic fertilizer fermentation tank, which is arranged on the ground side by side; the fermentation tank comprises a base and a plurality of fermentation cylinders which are stacked up and down and installed on the base, wherein the fermentation cylinders are communicated up and down; a top cover is arranged on a top opening of the fermentation cylinder at the top, a feed port is formed in the top cover, and a cover plate is covered on the feed port; a discharge nozzle is arranged on one side of the fermentation cylinder at the bottom, and a baffle is arranged on the discharge nozzle; a containing chamber is formed in the base, a stirring motor is installed in the containing chamber, a stirring shaft is connected to the upper part of a main shaft of the stirring motor, penetrates through the base and then extends into the fermentation cylinder, and a plurality of stirring rods are arranged on the stirring shaft; the transportation device comprises a guide seat positioned beside a base, a sliding seat capable of moving back and forth is mounted on the guide seat, a driving motor is mounted at one end of the guide seat, a main shaft of the driving motor is connected with a ball screw, and the ball screw is connected with the sliding seat in a matching manner; articulated on the sliding seat have lifting unit, lifting unit top articulates there is the backup pad, install the upset cylinder of hopper and drive hopper upset in the backup pad.

Furthermore, the lifting assembly comprises a plurality of groups of scissor assemblies which are hinged up and down and a lifting cylinder which is hinged on the bottom scissor assembly; the scissor assembly comprises two pairs of scissor arms which are hinged with each other, and a connecting shaft is arranged between the two pairs of scissor arms in a penetrating way; through holes are formed in two ends of each scissor arm, and rotating shafts penetrate through the through holes of the scissor arms of the upper scissor assembly and the lower scissor assembly.

Further, the sliding seat is of a frame structure, a T-shaped sliding block is arranged on the downward side of the sliding seat, and the sliding block is connected with the ball screw in a matching manner; hinge holes are formed in two sides of the inner wall of the sliding seat close to the front end, sliding chutes are formed in the rear half parts of the two sides of the inner wall of the sliding seat, and hinge shafts penetrate through holes in scissor arms of the bottom scissor assemblies and the hinge holes or the sliding chutes; the support arm is installed to the scissors subassembly rear side of bottom, lift cylinder bottom articulates at the sliding seat rear side, lift cylinder's piston rod top articulates on the support arm.

The supporting plate is of a frame structure, hinge holes are formed in two sides of the inner wall of the supporting plate close to the rear end, sliding grooves are formed in the front half parts of the two sides of the inner wall of the supporting plate, and hinge shafts penetrate through holes in scissor arms of the top scissor assembly and the hinge holes or the sliding grooves; the bottom of the supporting plate is provided with a connecting arm, the overturning cylinder is hinged to the connecting arm, and the top of a piston rod of the overturning cylinder is hinged to the bottom of the hopper; a pair of hinge seats is arranged on the front side of the top surface of the supporting plate; the hopper bottom is equipped with the dwang forward, the dwang articulates on articulated seat.

Furthermore, a plurality of stirring rods are arranged on the stirring shaft in parallel, and the positions of the stirring rods are staggered; and a plurality of stirring sheets are arranged on the stirring rod.

Further, an inlet is formed in one side of the base, and the base is hinged with a door plate at the inlet position.

Further, the periphery of the base, the fermentation cylinder and the top cover is outwards provided with an installation block, the installation block is provided with an installation hole, and a connection bolt penetrates through the installation hole.

Further, an exhaust nozzle is arranged on the top cover, and an exhaust valve is installed on the exhaust nozzle.

A fermentation process of a biological bacteria organic fertilizer comprises the first step of preparing organic mixtures of livestock manure, crop stalks and the like, and a fermentation microbial inoculum; secondly, the prepared organic mixture and the fermentation inoculant are loaded into a hopper on the fermentation cylinder by using a forklift, and the transportation device is started to pour the organic mixture and the fermentation inoculant in the hopper into the fermentation cylinder; starting a stirring motor, wherein the stirring shaft is driven by the stirring motor to uniformly stir the organic mixture and the fermentation inoculant in the stirring cylinder, so that the organic mixture and the fermentation inoculant are fermented in the fermentation cylinder by self, the fermentation period is not less than two weeks, and the stirring shaft is driven by the stirring motor to stir the organic mixture in the fermentation cylinder at least three times in the fermentation process; and fourthly, completing the preparation of the organic fertilizer after the fermentation of the organic mixture in the fermentation cylinder is completed, and opening a discharge nozzle on the fermentation cylinder to discharge the organic fertilizer in the fermentation cylinder outwards.

By adopting the technical scheme, the invention has the beneficial effects that:

the invention discloses a biological bacterium organic fertilizer fermentation tank and a fermentation process thereof. The fermentation cylinder comprises a base and a plurality of fermentation cylinders stacked up and down and installed on the base, the fermentation cylinders are communicated up and down, a top cover is installed on a top opening of the fermentation cylinder at the top, a feed inlet is formed in the top cover, and a discharge nozzle is arranged on one side of the fermentation cylinder at the bottom. The indoor agitator motor that installs that holds of base, the (mixing) shaft that agitator motor drive is connected passes and stretches into in the fermentation cylinder behind the base. The device is characterized by further comprising a conveying device arranged on the ground, a sliding seat capable of moving back and forth is arranged on a guide seat of the conveying device, a driving motor is arranged at one end of the guide seat, and a ball screw connected with the driving motor in a driving mode is connected with the sliding seat in a matching mode. Articulated on the sliding seat have a lifting unit, install the upset cylinder of hopper and drive hopper upset in the backup pad at lifting unit top. According to the invention, the conveying device is arranged beside the row of fermentation tanks, the hopper on the conveying device can be driven by the lifting assembly to lift, the hopper can also slide on the guide seat along with the sliding seat, and one conveying device can be used for filling organic mixtures into the row of fermentation tanks, so that the number of the conveying devices is greatly reduced, the purchase and maintenance cost is low, and the use cost of the conveying device is saved.

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 creative efforts.

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

FIG. 2 is a schematic view of the base and the fermenter according to the present invention;

FIG. 3 is a schematic illustration of a disassembled structure of the transportation device of the present invention;

FIG. 4 is a schematic view of the connection of the scissor assembly of the present invention to a hopper;

FIG. 5 is a schematic view of the connection between the scissors assembly and the sliding seat of the present invention;

wherein: 1. the fermentation tank comprises a base, 2, a fermentation cylinder, 3, a top cover, 4, a feed inlet, 5, a cover plate, 6, a discharge nozzle, 7, a baffle plate, 8, a containing chamber, 9, a stirring motor, 10, a stirring shaft, 11, a stirring rod, 12, a guide seat, 13, a sliding seat, 14, a driving motor, 15, a ball screw, 16, a support plate, 17, a hopper, 18, a turnover cylinder, 19, a lifting cylinder, 20, a shearing fork arm, 21, a connecting shaft, 22, a through hole, 23, a rotating shaft, 24, a sliding block, 25, a hinge hole, 26, a sliding groove, 27, a hinge shaft, 28, a support arm, 29, a connecting arm, 30, a hinge seat, 31, a rotating rod, 32, a stirring sheet, 33, an inlet, 34, a door plate, 35, a mounting block, 36, a mounting hole, 37, a connecting bolt, 38, an.

Detailed Description

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

As shown in fig. 1-5, a biological organic fertilizer fermentation tank is arranged on the ground side by side; the fermentation tank comprises a base 1 and a plurality of fermentation cylinders 2 which are stacked up and down and installed on the base 1, wherein the fermentation cylinders 2 are communicated up and down. A top cover 3 is arranged on the top opening of the fermentation cylinder 2 at the top, a feed inlet 4 is arranged on the top cover 3, and a cover plate 5 is covered on the feed inlet 4. The fermentation 2 at the bottom is provided with a material discharging nozzle 6 towards one side, and a baffle 7 is arranged on the material discharging nozzle 6. Set up in the base 1 and hold room 8, install agitator motor 9 in holding room 8, agitator motor 9's main shaft is connected with (mixing) shaft 10 up, and (mixing) shaft 10 is equipped with a plurality of puddlers 11 in stretching into fermentation cylinder 2 after passing base 1 on the (mixing) shaft 10. Still including installing the conveyer on subaerial, conveyer is including being located the guide holder 12 of base 1 one side, but installs reciprocating's sliding seat 13 on the guide holder 12, and driving motor 14 is installed to guide holder 12 one end, and driving motor 14's main shaft is connected with ball screw 15, ball screw 15 and sliding seat 13 accordant connection. The sliding seat 13 is hinged with a lifting assembly, the top of the lifting assembly is hinged with a supporting plate 16, and the supporting plate 16 is provided with a hopper 17 and a turnover cylinder 18 for driving the hopper 17 to turn over.

The lifting assembly of this embodiment includes a plurality of sets of scissor assemblies hinged up and down and a lifting cylinder 19 hinged to the bottom scissor assembly. The scissor assembly comprises two pairs of scissor arms 20 which are hinged with each other, and a connecting shaft 21 is arranged between the two pairs of scissor arms 20 in a penetrating way. Through holes 22 are formed at two ends of the scissors arm 20, and a rotating shaft 23 penetrates through the through holes 22 of the scissors arms 20 of the upper and lower adjacent scissors assemblies. The scissor arms 20 of the scissor assemblies are connected through a connecting shaft 21, the scissor arms 20 of the upper and lower adjacent scissor assemblies are connected through a rotating shaft 23, and the lifting cylinder 19 can drive the scissor assemblies to extend and retract up and down to complete the transportation of the organic mixture in the hopper 17.

The sliding seat 13 of the present embodiment is a frame structure, a T-shaped sliding block 24 is disposed downward on the sliding seat 13, and the sliding block 24 is connected with the ball screw 15 in a matching manner. Hinge holes 25 are formed in two sides of the inner wall of the sliding seat 13 close to the front end, sliding grooves 26 are formed in the rear half parts of the two sides of the inner wall of the sliding seat 13, and hinge shafts 27 penetrate through holes 22 in the scissor arms 20 of the bottom scissor assembly and the hinge holes 25 or the sliding grooves 26. The rear side of the bottom scissor assembly is provided with a supporting arm 28, the bottom of the lifting cylinder 19 is hinged on the rear side of the sliding seat 13, and the top of a piston rod of the lifting cylinder 19 is hinged on the supporting arm 28. The front and the back of the scissors arm 20 of the bottom scissors assembly are respectively hinged in the hinge hole 25 of the sliding seat 13 and the sliding chute 26 by means of the hinge shaft 27, and when the scissors arm 20 extends up and down, the hinge shaft 27 can slide back and forth in the sliding chute 26. The two ends of the lifting cylinder 19 are respectively hinged on the rear side of the sliding seat 13 and the supporting arm 28 on the scissor arm 20, and the lifting cylinder 19 can drive the scissor assembly to extend up and down.

The supporting plate 16 of this embodiment is a frame structure, two sides of the inner wall of the supporting plate 16 are close to the rear end, and a hinge hole 25 is provided, two sides of the inner wall of the supporting plate 16 are close to the rear end, a sliding groove 26 is provided at the front half part of the two sides of the inner wall of the supporting plate 16, and a hinge shaft 27 is provided in the through hole 22 and the hinge hole 25 or the sliding groove 26 of the scissors. The bottom of the supporting plate 16 is provided with a connecting arm 29, the overturning cylinder 18 is hinged on the connecting arm 29, and the top of a piston rod of the overturning cylinder 18 is hinged at the bottom of the hopper 17. A pair of hinge seats 30 are provided on the top front side of the support plate 16. The bottom of the hopper 17 is provided with a rotating rod 31 forward, and the rotating rod 31 is hinged on the hinge seat 30. The front and the back of the scissors arm 20 of the top scissors assembly are respectively hinged in the sliding groove 26 and the hinge hole 25 by means of the hinge shaft 27, and when the scissors arm 20 extends up and down, the hinge shaft 27 can slide back and forth in the sliding groove 26. The two ends of the turnover cylinder 18 are respectively hinged on a connecting arm 29 at the bottom of the supporting plate 16 and at the bottom of the hopper 17, and the turnover cylinder 18 can drive the hopper 17 to turn over so as to pour the organic mixture in the hopper 17 into the fermentation cylinder 2.

In the present embodiment, the plurality of stirring rods 11 are arranged in parallel on the stirring shaft 10, and the positions of the plurality of stirring rods 11 are staggered. The stirring rod 11 is provided with a plurality of stirring blades 32. When the stirring shaft 10 rotates, the organic mixture in the fermentation cylinder 2 is stirred by the stirring rod 11 and the stirring blade 32.

An inlet 33 is formed in one side of the base 1, and a door plate 34 is hinged to the base 1 at the position of the inlet 33. The door 34 is opened to allow access to the compartment 8 of the base 1 for maintenance and repair of the agitator motor 9.

In the embodiment, the periphery of the base 1, the fermentation cylinder 2 and the top cover 3 is provided with an installation block 353 outwards, an installation hole 36 is formed on the installation block 35, and a connection bolt 37 penetrates through the installation hole 36. The base 1, the fermentation cylinder 2 and the top cover 3 can be fixedly connected by the connecting bolt 37.

The top cover 3 of the present embodiment is provided with an exhaust nozzle 38, and an exhaust valve 39 is mounted on the exhaust nozzle 38. The air outlet valve 39 can control the air exchange inside and outside the fermentation cylinder 2, and the air outlet valve 39 is selectively opened or closed according to different fermentation inocula.

A fermentation process of a biological bacteria organic fertilizer comprises the first step of preparing organic mixtures of livestock manure, crop stalks and the like, and a fermentation microbial inoculum; secondly, the prepared organic mixture and the fermentation inoculant are loaded into a hopper 17 on the fermentation tank by using a forklift, and a conveying device is started to pour the organic mixture and the fermentation inoculant in the hopper 17 into the fermentation cylinder 2; thirdly, starting the stirring motor 9, wherein the stirring shaft 10 is driven by the stirring motor 9 to uniformly stir the organic mixture and the fermentation inoculant in the stirring cylinder 2, so that the organic mixture and the fermentation inoculant are fermented in the fermentation cylinder 2 by self, the fermentation period is not less than two weeks, and the stirring shaft 10 is driven by the stirring motor 9 to stir the organic mixture in the fermentation cylinder 2 at least three times in the fermentation process; and fourthly, completing the preparation of the organic fertilizer after the fermentation of the organic mixture in the fermentation cylinder 2 is completed, and opening a discharge nozzle 6 on the fermentation cylinder 2 to discharge the organic fertilizer in the fermentation cylinder 2 outwards.

According to the invention, the conveying device is arranged beside the row of fermentation tanks, the hopper 17 on the conveying device can be driven by the lifting assembly to lift, the hopper 17 can also slide on the guide seat 12 along with the sliding seat 13, and one conveying device can be used for filling organic mixtures into the row of fermentation tanks, so that the number of the conveying devices is greatly reduced, the purchase and maintenance cost is low, and the use cost of the conveying device is saved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.