CN112167393A

CN112167393A - Multifunctional fermentation chamber for producing basket tea

Info

Publication number: CN112167393A
Application number: CN202011236310.5A
Authority: CN
Inventors: 苏润生; 苏涛
Original assignee: Jinhui Ecological Agricultural Products Development Co ltd
Current assignee: Jinhui Ecological Agricultural Products Development Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-01-05
Anticipated expiration: 2040-11-09
Also published as: CN112167393B

Abstract

The invention belongs to the technical field of tea processing, and particularly relates to a fermentation chamber for producing multifunctional basket tea, which comprises a fermentation box, wherein a first rotating shaft coaxially arranged with the fermentation box is movably sleeved in the fermentation box, the outer ring of the first rotating shaft is fixedly connected with first fixing plates of annular structures arranged at equal intervals along the length direction of the first rotating shaft, a filter plate of the annular structures is fixed on the outer ring of the first fixing plate, a second fixing plate of the annular structures is fixed on the top of one side, close to the outer ring, of the filter plate, a material pushing mechanism is arranged above the filter plate, the top of the material pushing mechanism is rotatably connected with a first fixing rod of an L-shaped structure, one end, extending out of the fermentation box, of the first fixing rod is movably sleeved with a protective housing fixed with the outer wall of the fermentation box, the inner wall of the top of the protective housing is movably sleeved; the invention can make the tea fully contact with the fermentation liquor, thereby improving the working efficiency and reducing the economic loss.

Description

Multifunctional fermentation chamber for producing basket tea

Technical Field

The invention relates to the technical field of tea processing, in particular to a multifunctional fermentation chamber for producing basket tea.

Background

When the tea is fermented, the tea can be ensured to be fully fermented only by fully contacting the tea with the fermentation liquor, and the tea is basically stirred in the conventional equipment to be fully contacted with the fermentation liquor, so that the tea is damaged, and the economic cost is increased; therefore, a multifunctional fermenting chamber for producing basket tea is needed.

Disclosure of Invention

The multifunctional fermentation chamber for basket tea production provided by the invention solves the problem that tea cannot be in full contact with fermentation liquor.

In order to achieve the purpose, the invention adopts the following technical scheme:

a fermentation chamber for producing multifunctional basket tea comprises a fermentation box, wherein a first rotating shaft which is coaxially arranged with the fermentation box is movably sleeved in the fermentation box, a first fixing plate which is of an annular structure and is equidistantly arranged along the length direction of the first rotating shaft is fixedly connected to the outer ring of the first rotating shaft, a filter plate of the annular structure is fixed to the outer ring of the first fixing plate, a second fixing plate of the annular structure is fixed to the top of one side, close to the outer ring of the filter plate, a material pushing mechanism is arranged above the filter plate, a first fixing rod of an L-shaped structure is rotatably connected to the top of the material pushing mechanism, a protective cover shell which is fixed to the outer wall of the fermentation box is movably sleeved at one end, extending out of the fermentation box, of the first fixing rod, a worm is movably sleeved on the inner wall of the top of the protective cover shell, the worm is meshed with a first turbine fixedly connected with, the inner circle rigid coupling of second turbine has the second dead lever with the L type structure that the fermentation case activity cup jointed, the second dead lever stretches into the inside one end top of fermentation case and is provided with the third dead lever of loop configuration, the bottom outer lane sliding connection of third dead lever has two sets of head rods along its central axis symmetric distribution, the other end of head rod and the inner wall sliding connection of fermentation case, a plurality of groups putty component elements have been cup jointed in the top slip of head rod, one side of putty component element is provided with the fixed frame with the fixed trapezium structure of fermentation case inner wall, the top of putty component element is provided with material turning mechanism.

Preferably, the pushing mechanism comprises a second scraper plate located above the filter plate, the two ends of the second scraper plate are respectively fixed with a first scraper plate obliquely arranged, the distance between the two sets of first scraper plates is gradually reduced from top to bottom, the first scraper plates are close to the inner wall of the fermentation box and are in sliding connection with the inner wall of the fermentation box, a second connecting rod is fixed at the top of the second scraper plate, and the top of the second connecting rod is rotatably connected with the bottom of the first fixing rod.

Preferably, stirring mechanism includes the first water pipe with the fermentation case rigid coupling, and first water pipe stretches into the one end bottom rigid coupling of fermentation case and has the shower nozzle of following its length direction equidistance and distributing, and one side of shower nozzle is provided with the stirring pole fixed with first water pipe, and the one end rigid coupling that first water pipe stretches out the fermentation case has the second water pipe, and the other end rigid coupling of second water pipe has the suction pump, and the other end rigid coupling of suction pump has the water tank.

Preferably, the inner ring position of the first fixing plate is higher than the outer ring position of the first fixing plate, the outer ring position of the filter plate is higher than the inner ring position of the filter plate, and the outer ring of the filter plate is fixed with the inner wall of the fermentation box.

Preferably, the cross section of the third fixing rod is a T-shaped structure.

Preferably, a discharge port is formed in the filter plate, the blocking component comprises a second blocking plate which is in sliding sleeve connection with the top of the third fixing rod, a first blocking plate is fixed to the top of the second blocking plate, a second rotating shaft is movably sleeved inside the second blocking plate, and a deflection mechanism is fixed between outer rings of two ends of each two adjacent groups of second rotating shafts.

Preferably, the deflection mechanism comprises a first deflection rod fixed with the outer ring of the second rotating shaft, the other end of the first deflection rod is movably sleeved with a second deflection rod of a hollow structure, one ends, close to each other, of two groups of second deflection rods in the same group of deflection mechanisms are hinged, one end, extending into the interior of the second deflection rod, of the first deflection rod is fixed with a spring, the other end of the spring is fixed with the inner wall of the bottom of the second deflection rod, and a fixed shaft fixed with the top of the first connecting rod is fixed at the bottom of one group of second blocking plates located on the outermost side.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the tea leaves can be uniformly distributed on the filter plate through the first rotating shaft, the first fixing plate, the second fixing plate, the filter plate and the turnover rod, so that the tea leaves can be fully contacted with the fermentation liquor, and the tea leaves can be fully fermented; simultaneously, the tea leaves can be sent out of the fermentation chamber after the tea leaf fermentation is finished through the worm, the first worm wheel, the second worm wheel, the material pushing mechanism and the material blocking mechanism, the discharging work efficiency is improved, and the labor intensity of workers is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a multifunctional fermentation chamber for producing basket tea according to the present invention.

Fig. 2 is a schematic structural diagram of the first rotating shaft and the first fixing plate according to the present invention.

Fig. 3 is a schematic structural diagram of the first plugging plate and the second plugging plate according to the present invention.

Fig. 4 is a schematic structural diagram of a first deflecting bar and a second deflecting bar according to the present invention.

Reference numbers in the figures: 1. a fermentation box; 2. a first rotating shaft; 3. a first fixing plate; 4. a filter plate; 5. a second fixing plate; 6. a material pushing mechanism; 7. a first fixing lever; 8. a protective housing; 9. a first turbine; 10. a worm; 11. a second turbine; 12. a second fixing bar; 13. a third fixing bar; 14. a first connecting rod; 15. a plugging component; 16. a material turning mechanism; 17. a first water pipe; 18. a second water pipe; 19. a spray head; 20. a material turning rod; 21. a second connecting rod; 22. a first squeegee; 23. a second squeegee; 24. a water pump; 25. a water tank; 26. a first motor; 27. a first plugging plate; 28. a second plugging plate; 29. a deflection mechanism.

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.

Referring to fig. 1-4, a fermentation chamber for producing multifunctional basket tea, comprising a fermentation box 1, a first rotating shaft 2 coaxially sleeved inside the fermentation box 1, a first fixing plate 3 of an annular structure fixedly connected to the outer ring of the first rotating shaft 2 and equidistantly arranged along the length direction of the first rotating shaft, a filter plate 4 of an annular structure fixed to the outer ring of the first fixing plate 3, a second fixing plate 5 of an annular structure fixed to the top of one side of the filter plate 4 close to the outer ring, a material pushing mechanism 6 arranged above the filter plate 4, a first fixing rod 7 of an L-shaped structure rotatably connected to the top of the material pushing mechanism 6, a protective cover 8 fixed to the outer wall of the fermentation box 1 movably sleeved on one end of the first fixing rod 7 extending out of the fermentation box 1, a worm 10 movably sleeved on the inner wall of the top of the protective cover 8, the worm 10 engaged with a first turbine 9 fixedly connected to the outer ring of the first fixing rod 7, a second turbine 11 positioned below the first turbine 9 is meshed with the worm 10, a second fixing rod 12 of an L-shaped structure movably sleeved with the fermentation box 1 is fixedly connected to the inner ring of the second turbine 11, a third fixing rod 13 of an annular structure is arranged above one end, extending into the fermentation box 1, of the second fixing rod 12, two groups of first connecting rods 14 symmetrically distributed along the central axis of the third fixing rod 13 are slidably connected to the outer ring of the bottom of the third fixing rod 13, the other end of each first connecting rod 14 is slidably connected with the inner wall of the fermentation box 1, a plurality of groups of material blocking components 15 are slidably sleeved at the top of each first connecting rod 14, a fixing frame of a trapezoidal structure fixed with the inner wall of the fermentation box 1 is arranged on one side of each material blocking component 15, and a material turning mechanism 16 is arranged above; when the blue tea is fermented, firstly, the raw materials are sent to the filter plate 4, then, the first rotating shaft 2 rotates to drive the first fixing plate 3 connected with the first rotating shaft to rotate, the first fixing plate 3 rotates to drive the filter plate 4 connected with the first fixing plate to rotate, the filter plate 4 rotates to drive the second fixing plate 5 connected with the filter plate to rotate, the filter plate 4 rotates to drive the first blocking plate 27 to rotate together, the first blocking plate 27 drives the second blocking plate 28 connected with the first blocking plate to rotate, the second blocking plate 28 rotates along the third fixing rod 13, the tea leaves above the filter plate 4 are driven to rotate together when the filter plate 4 rotates, when the filter plate rotates to contact with the stirring rod 20, the stirring rod 20 uniformly spreads the tea leaves on the filter plate 4, meanwhile, the water pump 24 sends the fermentation liquor in the water tank 25 to the first water pipe 17 through the second water pipe 18, then the tea leaves are sprayed out by the spray head 19, when the stirring rod 20 uniformly spreads the tea leaves on the filter plate, meanwhile, the tea leaves are turned, so that the fermentation liquor can be fully contacted with the tea leaves, and the damage to the tea leaves is avoided; when the fermentation is finished and tea leaves are discharged, firstly, a first motor is started, the first motor drives a worm 10 to rotate, the worm 10 drives a first worm wheel 9 and a second worm wheel 11 which are meshed with the worm 10 to rotate, the first worm wheel 9 drives a first fixing rod 7 to rotate, the first fixing rod 7 drives a second connecting rod 21 to deflect, the second connecting rod 21 drives a second scraper 23 connected with the second connecting rod 21 to move downwards, the second scraper 23 drives a first scraper 22 connected with the second scraper to move downwards, two groups of first scrapers 22 are respectively contacted with a first fixing plate 3 and a second fixing plate 5, the third scraper 23 is contacted with a filter plate 4, meanwhile, the second worm wheel 11 drives a second fixing rod 12 to rotate, the second fixing rod 12 rotates to enable a first connecting rod 14 to drive a third fixing rod 13 to move downwards, the third fixing rod 13 moves downwards to drive a second blocking plate 28 connected with the third fixing rod to move downwards together, second putty board 28 drives first putty board 27 connected with it and moves down, make first putty board 27 and discharge gate separation, conflict with fixed frame when first putty board 27 moves down, when first putty board 27 moves and blocks up fixed frame separation, under the effort of spring, make second deflection pole slide along first deflection pole, thereby make the distance between two sets of adjacent first putty boards 27 increase, then first pivot 2 continues to drive filter 4 and rotates, thereby first scraper blade 22 and second scraper blade 23 see tealeaves out from the discharge gate, layer by layer downwards, the device can make tealeaves and zymotic fluid fully contact, make tealeaves fully fermented, also avoid producing the damage to tealeaves when overturning simultaneously, economic loss is reduced.

Further, the material pushing mechanism 6 comprises a second scraper 23 positioned above the filter plate 4, the two ends of the second scraper 23 are respectively fixed with a first scraper 22 which is obliquely arranged, the distance between the two groups of first scrapers 22 is gradually reduced from top to bottom, the group of first scrapers 22 close to the inner wall of the fermentation box 1 is in sliding connection with the inner wall of the fermentation box 1, a second connecting rod 21 is fixed at the top of the second scraper 23, and the top of the second connecting rod 21 is rotatably connected with the bottom of the first fixing rod 7; first worm wheel 9 drives first dead lever 7 and rotates, and first dead lever 7 drives second connecting rod 21 and takes place to deflect, and second connecting rod 21 drives the second scraper blade 23 of being connected rather than the downstream, and second scraper blade 23 drives the first scraper blade 22 of being connected rather than the downstream, and two sets of first scraper blades 22 contact with first fixed plate 3 and second fixed plate 5 respectively, and third scraper blade 23 contacts with filter 4 to release tealeaves from filter 4.

Particularly, the material turning mechanism 16 comprises a first water pipe 17 fixedly connected with the fermentation box 1, the bottom of one end of the first water pipe 17 extending into the fermentation box 1 is fixedly connected with spray heads 19 equidistantly distributed along the length direction of the first water pipe, one side of each spray head 19 is provided with a material turning rod 20 fixed with the first water pipe 17, one end of the first water pipe 17 extending out of the fermentation box 1 is fixedly connected with a second water pipe 18, the other end of the second water pipe 18 is fixedly connected with a water suction pump 24, and the other end of the water suction pump 24 is fixedly connected with a water tank 25; the fermentation liquor in the water tank 25 is delivered to the first water pipe 17 through the second water pipe 18 through the water suction pump 24 and then is sprayed out through the spray head 19, and when the tea is uniformly spread on the filter plate 4 through the turnover rod 20, the tea is turned over simultaneously, so that the fermentation liquor can be fully contacted with the tea.

It is worth to say that the inner ring position of the first fixing plate 3 is higher than the outer ring position thereof, the outer ring position of the filter plate 4 is higher than the inner ring position thereof, and the outer ring of the filter plate 4 is fixed with the inner wall of the fermentation box 1; so that the tea leaves can fall on the filter plate 4 to be in uniform contact with the fermentation liquid.

In addition, the cross section of the third fixing rod 13 is a T-shaped structure; so that the second blocking plate 28 can rotate along the third fixing rod 13 and can push down the stuck tea leaves on the third fixing rod 13.

A discharge port is formed in the filter plate 4, the blocking component 15 comprises a second blocking plate 28 which is in sliding sleeve joint with the top of the third fixing rod 13, a first blocking plate 27 is fixed at the top of the second blocking plate 28, a second rotating shaft is movably sleeved in the second blocking plate 28, and a deflection mechanism 29 is fixed between the outer rings of two ends of each two adjacent groups of second rotating shafts; the first material blocking plate 27 and the second material blocking plate 28 are connected with the material outlet in a sliding manner, so that whether the tea is fermented or the tea is discharged after the fermentation is finished is controlled.

The deflection mechanism 29 comprises a first deflection rod fixed with the outer ring of the second rotating shaft, the other end of the first deflection rod is movably sleeved with a second deflection rod with a hollow structure, one ends of two groups of second deflection rods in the same group of deflection mechanisms 29, which are close to each other, are hinged, one end of the first deflection rod, which extends into the interior of the second deflection rod, is fixed with a spring, the other end of the spring is fixed with the inner wall of the bottom of the second deflection rod, and the bottom of one group of second plugging plates 28 positioned at the outermost side is fixed with a fixed shaft fixed with the top of the first connecting rod 14; when the first plugging plates 27 move downwards and simultaneously abut against the fixed frame, and when the first plugging plates 27 move to be separated from the fixed frame, the second deflection rods slide along the first deflection rods under the action of the springs, so that the distance between two adjacent groups of the first plugging plates 27 is increased; the first blocking plate 27 is prevented from blocking the tea leaves during discharging.

The working principle is as follows: when the blue tea is fermented, firstly, the raw materials are sent to the filter plate 4, then, the first rotating shaft 2 rotates to drive the first fixing plate 3 connected with the first rotating shaft to rotate, the first fixing plate 3 rotates to drive the filter plate 4 connected with the first fixing plate to rotate, the filter plate 4 rotates to drive the second fixing plate 5 connected with the filter plate to rotate, the filter plate 4 rotates to drive the first blocking plate 27 to rotate together, the first blocking plate 27 drives the second blocking plate 28 connected with the first blocking plate to rotate, the second blocking plate 28 rotates along the third fixing rod 13, the tea leaves above the filter plate 4 are driven to rotate together when the filter plate 4 rotates, when the filter plate rotates to contact with the stirring rod 20, the stirring rod 20 uniformly spreads the tea leaves on the filter plate 4, meanwhile, the water pump 24 sends the fermentation liquor in the water tank 25 to the first water pipe 17 through the second water pipe 18, then the tea leaves are sprayed out by the spray head 19, when the stirring rod 20 uniformly spreads the tea leaves on the filter plate, meanwhile, the tea leaves are turned, so that the fermentation liquor can be fully contacted with the tea leaves, and the damage to the tea leaves is avoided;

when the fermentation is finished and tea leaves are discharged, firstly, a first motor is started, the first motor drives a worm 10 to rotate, the worm 10 drives a first worm wheel 9 and a second worm wheel 11 which are meshed with the worm 10 to rotate, the first worm wheel 9 drives a first fixing rod 7 to rotate, the first fixing rod 7 drives a second connecting rod 21 to deflect, the second connecting rod 21 drives a second scraper 23 connected with the second connecting rod 21 to move downwards, the second scraper 23 drives a first scraper 22 connected with the second scraper to move downwards, two groups of first scrapers 22 are respectively contacted with a first fixing plate 3 and a second fixing plate 5, the third scraper 23 is contacted with a filter plate 4, meanwhile, the second worm wheel 11 drives a second fixing rod 12 to rotate, the second fixing rod 12 rotates to enable a first connecting rod 14 to drive a third fixing rod 13 to move downwards, the third fixing rod 13 moves downwards to drive a second blocking plate 28 connected with the third fixing rod to move downwards together, second putty board 28 drives first putty board 27 connected with it and moves down, make first putty board 27 and discharge gate separation, conflict with fixed frame when first putty board 27 moves down, when first putty board 27 moves and blocks up fixed frame separation, under the effort of spring, make second deflection pole slide along first deflection pole, thereby make the distance between two sets of adjacent first putty boards 27 increase, then first pivot 2 continues to drive filter 4 and rotates, thereby first scraper blade 22 and second scraper blade 23 see tealeaves out from the discharge gate, layer by layer downwards, the device can make tealeaves and zymotic fluid fully contact, make tealeaves fully fermented, also avoid producing the damage to tealeaves when overturning simultaneously, economic loss is reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A fermentation chamber for producing multifunctional basket tea comprises a fermentation box (1) and is characterized in that a first rotating shaft (2) which is coaxially arranged with the fermentation box (1) is movably sleeved inside the fermentation box (1), a first fixing plate (3) of an annular structure which is equidistantly arranged along the length direction of the first rotating shaft (2) is fixedly connected to the outer ring of the first rotating shaft (2), a filter plate (4) of the annular structure is fixed to the outer ring of the first fixing plate (3), a second fixing plate (5) of the annular structure is fixed to the top of one side, close to the outer ring, of the filter plate (4), a material pushing mechanism (6) is arranged above the filter plate (4), a first fixing rod (7) of an L-shaped structure is rotatably connected to the top of the material pushing mechanism (6), a protective cover (8) fixed to the outer wall of the fermentation box (1) is movably sleeved at one end, extending out of the fermentation box (1), of the, a worm (10) is movably sleeved on the inner wall of the top of the protective housing (8), the worm (10) is meshed with a first turbine (9) fixedly connected with the outer ring of a first fixing rod (7), the worm (10) is meshed with a second turbine (11) positioned below the first turbine (9), the inner ring of the second turbine (11) is fixedly connected with a second fixing rod (12) of an L-shaped structure movably sleeved with the fermentation box (1), a third fixing rod (13) of an annular structure is arranged above one end, extending into the fermentation box (1), of the second fixing rod (12), the outer ring of the bottom of the third fixing rod (13) is slidably connected with two groups of first connecting rods (14) symmetrically distributed along the central axis of the first connecting rods, the other end of each first connecting rod (14) is slidably connected with the inner wall of the fermentation box (1), and a plurality of blocking material components (15) are slidably sleeved on the top of each first connecting rod (14), one side of the blocking component (15) is provided with a fixing frame of a trapezoidal structure fixed with the inner wall of the fermentation box (1), and a material turning mechanism (16) is arranged above the blocking component (15).

2. The fermentation chamber for producing the multifunctional basket tea as claimed in claim 1, wherein the material pushing mechanism (6) comprises a second scraper (23) positioned above the filter plate (4), the two ends of the second scraper (23) are respectively fixed with a first scraper (22) which is obliquely arranged, the distance between the two groups of first scrapers (22) is gradually reduced from top to bottom, the group of first scrapers (22) close to the inner wall of the fermentation box (1) is slidably connected with the inner wall of the fermentation box (1), the top of the second scraper (23) is fixed with a second connecting rod (21), and the top of the second connecting rod (21) is rotatably connected with the bottom of the first fixing rod (7).

3. The fermentation chamber for producing the multifunctional basketball tea as claimed in claim 1, wherein the stirring mechanism (16) comprises a first water pipe (17) fixedly connected with the fermentation box (1), a spray head (19) equidistantly distributed along the length direction of the first water pipe (17) is fixedly connected to the bottom of one end of the first water pipe (17) extending into the fermentation box (1), a stirring rod (20) fixed with the first water pipe (17) is arranged on one side of the spray head (19), a second water pipe (18) is fixedly connected to one end of the first water pipe (17) extending out of the fermentation box (1), a water suction pump (24) is fixedly connected to the other end of the second water pipe (18), and a water tank (25) is fixedly connected to the other end of the water suction pump (24).

4. The multifunctional fermentation chamber for producing basket tea according to claim 1, wherein the inner circle of the first fixing plate (3) is higher than the outer circle thereof, the outer circle of the filter plate (4) is higher than the inner circle thereof, and the outer circle of the filter plate (4) is fixed with the inner wall of the fermentation box (1).

5. The fermenting chamber for producing the multifunctional basketball tea as claimed in claim 1, wherein the cross section of the third fixing rod (13) is T-shaped.

6. The fermentation chamber for producing the multifunctional basketball tea as claimed in claim 1, wherein a discharge port is formed in the filter plate (4), the blocking component (15) comprises a second blocking plate (28) slidably sleeved with the top of the third fixing rod (13), a first blocking plate (27) is fixed to the top of the second blocking plate (28), a second rotating shaft is movably sleeved inside the second blocking plate (28), and a deflection mechanism (29) is fixed between the outer rings of two ends of each two adjacent groups of second rotating shafts.

7. The fermentation chamber for producing the multifunctional basketball tea as claimed in claim 6, wherein the deflection mechanism (29) comprises a first deflection rod fixed to the outer ring of the second rotating shaft, the other end of the first deflection rod is movably sleeved with a second deflection rod of a hollow structure, two groups of second deflection rods in the same group of deflection mechanisms (29) are hinged to each other at the ends close to each other, a spring is fixed to one end of the first deflection rod extending into the second deflection rod, the other end of the spring is fixed to the inner wall of the bottom of the second deflection rod, and a fixed shaft fixed to the top of the first connecting rod (14) is fixed to the bottom of one group of second blocking plates (28) located at the outermost side.