CN211314444U

CN211314444U - Air buoyancy driven power device

Info

Publication number: CN211314444U
Application number: CN201922305885.7U
Authority: CN
Inventors: 刘静君; 刘靖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-21
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a power device driven by air buoyancy, which comprises a moving piece, a pneumatic mechanism and a crank rotating mechanism, wherein, the moving piece is at least one and is used for moving up and down in a liquid medium, the pneumatic mechanism is used for controlling the moving piece to circularly move up and down, the crank rotating mechanism is connected with the moving piece in a transmission way, and the up-and-down circular movement of the moving piece drives the crank rotating mechanism to rotate; the moving piece comprises a shell, a sealed gas storage bag for storing gas and a gravity block which is arranged in a liquid medium and used for driving the moving piece to integrally move downwards; the utility model discloses a sealed gas storage air pocket to in the moving member fills the exhaust operation and can easily control reciprocating of moving member, and it can realize collection, storage, application and the conversion of gas buoyancy, provides new power mode for the life production, easy operation not only, the dependable performance moreover.

Description

Air buoyancy driven power device

Technical Field

The utility model relates to a pneumatics, floating installation field, in particular to air buoyancy driven power device.

Background

It is well known that the amount of energy that can be developed and utilized by humans is decreasing, and that the use of such energy causes serious environmental pollution. Energy crisis and environmental degradation force people to find new, clean, recyclable new energy. Solar energy, wind energy, tidal energy, and the like are being developed and utilized. But their development and use is limited due to environmental, climatic and geographical constraints.

70% of the earth surface is covered by ocean and 4% is covered by inland water area, which means that the energy contained in water resources is inexhaustible, but because the development intensity and the cognitive degree of human are not enough, the resources are not developed and utilized completely, and only the hydroelectric power generation system with water impacted by water level drop is applied. Buoyancy of water is also a resource, and research and use of buoyancy is limited to ships traveling on water surfaces, underwater vehicles, and the like. Therefore, the buoyancy of water is a natural resource, is also a power resource to be developed and utilized urgently, and is a clean resource which can be recycled, is economic, convenient, clean, environment-friendly, safe and reliable. Therefore, developing more convenient and cheaper available water resources is one of the major tasks facing human beings.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide gas buoyancy driven power device, its simple structure is reasonable, but cyclic utilization moreover, and it is convenient more economical, clean environmental protection, safe and reliable.

In order to solve the technical problem, the utility model discloses a technical scheme does: the air buoyancy driven power device is characterized in that: the automatic feeding device comprises at least one moving piece, a pneumatic mechanism and a crank rotating mechanism, wherein the moving piece is used for moving up and down in a liquid medium, the pneumatic mechanism is used for controlling the moving piece to move up and down in a circulating manner, the crank rotating mechanism is in transmission connection with the moving piece, and the up and down circulating movement of the moving piece drives the crank rotating mechanism to rotate; the movable piece comprises a shell, a sealed gas storage bag used for storing gas and a gravity block used for driving the movable piece to integrally move downwards in a liquid medium, the sealed gas storage bag is placed and fixed in an inner cavity of the shell and is communicated with a pneumatic mechanism, the sealed gas storage bag changes the distribution condition of liquid under the inflation action of the pneumatic mechanism to enable the sealed gas storage bag to expand and drive the shell and the gravity block to move upwards in the liquid medium, the sealed gas storage bag also changes the distribution condition of the liquid under the exhaust action of the pneumatic mechanism to enable the sealed gas storage bag to contract and move downwards together with the shell under the gravity action of the gravity block, and the upward and downward cyclic movement of the movable piece is realized through the alternate change of inflation and exhaust.

As an improvement, the shell is provided with a plurality of drain holes, and the liquid medium can enter and exit the inner cavity of the shell through the drain holes.

As an improvement, the moving piece is connected with the crank rotating mechanism through a connecting rod, the tail end of the connecting rod is rotatably connected to the top end of the shell, and the front end of the connecting rod is rotatably connected with the crank rotating mechanism.

As an improvement, one end of the connecting rod is rotatably connected to the position of the crank rotating mechanism close to the edge.

As an improvement, the pneumatic mechanism comprises a gas input pipeline and a gas output pipeline, and the sealed gas storage bag is respectively connected with the gas input pipeline and the gas output pipeline.

As an improvement, the sealed air storage bags are arranged at one or more than two, and the sealed air storage bags are mutually connected in parallel to the pneumatic mechanism and are mutually independent.

As an improvement, the device also comprises a directional supporting mechanism used for guiding the moving piece to move, wherein the directional supporting mechanism comprises a bracket and a guide rail, the guide rail is vertically arranged on the bracket, and the moving piece moves up and down along the guide rail.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a sealed gas storage air pocket to in the moving member fills the exhaust operation and can easily control reciprocating of moving member, and the mechanical energy that will reciprocate effectively is changed into the rotatory energy output, and it can realize collection, storage, application and the conversion of gas buoyancy, provides new power mode for the life production, easy operation not only, dependable performance moreover. The number of the sealed air storage air bags is increased or decreased, the size of the air buoyancy force of the moving part can be controlled, the rotation speed of the crank rotating mechanism is controlled by adjusting the alternate speed of inflation and exhaust, a user can adaptively adjust the air buoyancy force of the moving part according to different requirements of loads, the adaptability is improved, and the application range is enlarged.

Drawings

Fig. 1 is a schematic view of the overall structure of the first embodiment of the present invention.

Fig. 2 is a schematic structural view of a moving member in a second embodiment of the present invention.

Fig. 3 is a circuit diagram of the air charging and discharging control in the third embodiment of the present invention.

Fig. 4 is a schematic structural view of a moving member in a liquid medium according to a first embodiment of the present invention.

In the figure: the device comprises a moving piece 21, a shell 1, a sealed gas storage bag 2, a gravity block 3, a crank rotating mechanism 4, a connecting rod 5, an electromagnetic valve 11, an air inlet valve 12, an exhaust valve 13, a support 15, a guide rail 16, a gas input pipeline 19, a gas output pipeline 20 and a drain hole 101.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the power device driven by the air buoyancy comprises at least one moving member 21, a pneumatic mechanism and a crank rotating mechanism 4, wherein the moving member 21 is used for moving up and down in a liquid medium, the pneumatic mechanism is used for controlling the moving member 21 to move up and down in a circulating manner, the crank rotating mechanism 4 is in transmission connection with the moving member 21 through a connecting rod 5, the moving member 21 moves up and down in a circulating manner to drive the crank rotating mechanism 4 to rotate, in the technical scheme, the other end of the crank rotating mechanism 4 is connected with a load, and the pneumatic mechanism is connected with an external power supply. The moving member 21 moves up or down (i.e. sinking and floating) in the liquid medium under the action of the pneumatic mechanism, the energy generated by the movement of the air buoyancy in the liquid medium acts on the crank rotating mechanism 4, and the directional support mechanism is used as a pivot, so that the crank rotating mechanism 4 can rotate, the load is driven to work, the mechanical force of the up-and-down movement is converted into a rotating force, and the collection, storage, application and conversion of the air buoyancy are realized. In the technical scheme, the load can be a rotating general universal mechanical device, the power device can directly drive the mechanical device to operate as long as the rotating moments are matched, and the power device can also be developed and utilized in other machine operation fields.

As shown in fig. 1, it is the first embodiment of the present invention, the moving member 21 includes a housing 1, a sealed gas storage bag 2 for storing gas, and a gravity block 3 in the liquid medium for driving the moving member 21 to move downward, the sealed gas storage bag 2 is placed and fixed in the inner cavity of the housing 1 and is communicated with the pneumatic mechanism, the housing 1 is covered outside the sealed gas storage bag 2 in an inverted manner, the housing 1 is mainly used for driving the crank rotating mechanism 4 to rotate, and is a main component of the pneumatic device, a plurality of drainage holes 101 are uniformly distributed on the surface of the housing 1, and the liquid medium, such as water, can freely and smoothly enter and exit the inner cavity of the housing 1 through the drainage holes 101, so that the liquid medium and the liquid pressure outside the inner cavity are kept consistent. The shell 1 has certain strength and is convenient for driving the crank rotating mechanism 4 to rotate, and the shell 1 is made of an anti-corrosion material or coated with an anti-corrosion layer on the surface. The sealed gas storage bag 2 changes the distribution condition of the liquid under the inflation action of the pneumatic mechanism to enable the sealed gas storage bag to expand, and the sealed gas storage bag 2 can drive the shell 1 and the gravity block 3 to move upwards in the liquid medium because the density of the expanded sealed gas storage bag 2 is smaller than that of the liquid. On the contrary, the sealed gas storage bag 2 changes the distribution condition of the liquid under the exhaust action of the pneumatic mechanism to make it contract, and because the density of the contracted sealed gas storage bag 2 is greater than that of the liquid, the sealed gas storage bag 2 moves downwards together with the shell 1 under the action of the gravity block 3, and the descending of the moving member 21 is done by the gravity. The alternate charge and discharge of air causes the moving member 21 to move in an up-and-down cycle. The material adopted by the sealed gas storage bag 2 is a silicone rubber material with elasticity, contractility and good sealing performance, and the material is not easy to damage or leak gas. The sealed gas storage bag 2 is connected with a pneumatic mechanism through a hose, freely expands and contracts in the shell 1, and the sealed gas storage bag 2 is also an important part for controlling the moving part 21 to move up and down. The moving member 21 is disposed at a position close to the water surface, and the pressure at this position is small and has little influence on the moving member 21.

Further, in the first embodiment, one sealed gas storage bag 2 is provided, and the volume of the moving member 21 discharging the liquid medium is fixed to V1, and the buoyancy is fixed to F1. When the sealed gas storage bag 2 is exhausted and contracted, the gas buoyancy generated by the sealed gas storage bag 2 in a liquid medium is reduced, at the moment, the sealed gas storage bag needs to sink by the self weight of the moving piece 21, but the purpose of rapid sinking cannot be achieved by the self weight of the moving piece 21 in practical operation, so that the gravity block 3 is placed and fixed on the outer wall of the shell 1 and can be set according to the size of the shell 1, in order to enable the shell 1 to move up and down in a balanced manner, the gravity blocks 3 can be set to be two and are symmetrically fixed on two sides of the shell 1, and the shell 1 is prevented from inclining. The gravity blocks 3 are rigid objects with certain mass, and can also be arranged in an annular and uniform distribution mode or in a pairwise and symmetrical mode.

Furthermore, the moving member 21 and the crank rotating mechanism 4 are connected through a connecting rod 5, the end of the connecting rod 5 is rotatably connected to the top end of the housing 1, and the front end of the connecting rod 5 is rotatably connected to the crank rotating mechanism 4. Specifically, one end of the connecting rod 5 is rotatably connected to a position of the crank rotating mechanism 4 close to the edge, i.e. a position far away from the rotation axis of the crank rotating mechanism 4, so that the acting force generated by the up-and-down movement of the moving member 21 drives the crank rotating mechanism 4 to rotate, and the direction conversion of mechanical energy is realized.

Further, the pneumatic mechanism comprises a gas input pipeline 19 and a gas output pipeline 20, and the sealed gas storage bag 2 is respectively connected with the gas input pipeline 19 and the gas output pipeline 20. The gas input pipeline 19 is sequentially provided with an inflator pump, an electromagnetic valve and an air inlet valve 12, and the sealed gas storage bag 2 is connected to the gas input pipeline 19 through the corresponding air inlet valve 12. The gas output pipeline 20 is provided with an electromagnetic valve 11, the sealed gas storage bag 2 is connected with the outside atmosphere through the electromagnetic valve 11, and the sealed gas storage bag 2 is connected with the gas output pipeline 20 through a corresponding exhaust valve 13. When the crank rotating mechanism 4 rotates to the top dead center, the exhaust valve 13 is opened, so that the sealed gas storage bag 2 exhausts, the moving piece 21 moves downwards and drives the crank rotating mechanism 4 to rotate downwards; when the crank rotating mechanism 4 rotates to the bottom dead center, the air inlet valve 12 is opened, so that the sealed air storage bag 2 is inflated, the moving member 21 moves upwards, and the crank rotating mechanism 4 is driven to rotate upwards. In addition, the inflation amount is also an important index affecting the continuous movement of the moving member 21, and if the inflation amount is not enough or the inflation time of the sealed air storage bag 2 is prolonged, the movement period of the moving member 21 is slowed down, which affects the output power of the crank rotating mechanism 4, so that the sufficient inflation amount needs to be ensured. It can be seen that the time for one rotation of the crank rotating mechanism 4 is composed of two parts, one part is the time for moving the moving part 21 upwards after the air bag 2 is sealed and driving the crank rotating mechanism 4 to rotate upwards from the bottom dead center to the top dead center, this part is called the rising time, the other part is the time for moving the moving part 21 downwards after the air bag 2 is sealed and driving the crank rotating mechanism 4 to rotate downwards from the top dead center to the bottom dead center, this part is called the falling time, and the rising time and the falling time are collectively called the rotation period of the crank rotating mechanism 4. Assuming that 1Kg of force is required, the airtight gas bag 2 is filled with 1L of gas, and at this time, the airtight gas bag 2 releases 1Kg of water (corresponding to 1Kg of force). Experiments show that after the pneumatic mechanism fills 1L of gas into the sealed gas storage bag 2, the rising time of the crank rotating mechanism 4 is 0.5s, the falling time of the crank rotating mechanism 4 is 0.3s when the pneumatic mechanism exhausts, and the total time of one rotation of the crank rotating mechanism 4 is 0.8 s. Of course, the speed of inflation and deflation of the pneumatic mechanism depends on the power of the inflator, is not limited to the specific period and time, and can be selected according to actual conditions.

Further, as shown in fig. 4, the present invention further includes a directional supporting mechanism for guiding the moving member 21 to move, the directional supporting mechanism includes a support 15 and a guide rail 16, the guide rail 16 is vertically disposed on the support 15, and the moving member 21 moves up and down along the guide rail 16. The directional support mechanism can ensure that the moving part 21 moves in a certain direction in the liquid medium and support the normal work of all parts.

As shown in fig. 2, it is the second embodiment of the present invention, different from the first embodiment, in order to satisfy the normal work of driving different loads, the acting size of the pneumatic device needs to be different, that is, the up-down movement of the moving member 21 will have different energy changes, therefore, the sealing gas storage bag 2 is arranged more than two, and the sealing gas storage bag 2 is connected in parallel with the pneumatic mechanism, independent of each other (i.e., not interfering with each other). The displacement volume of moving member 21 is V = V1+ V2+ … …, and the buoyancy is F = F1+ F2+ … …, and it can be seen that the air buoyancy of moving member 21 is the sum of the air buoyancy received by the plurality of sealed air containers 2, and the air buoyancy of moving member 21 can be adjusted by increasing or decreasing the number of sealed air containers 2.

Further, the moving member 1 is disposed in a honeycomb shape and has a plurality of cavities, the sealed air storage bags 2 are disposed in the corresponding cavities, and each sealed air storage bag 2 is independent and does not affect each other. The moving member 21 of the second embodiment can change the overall energy level, so as to adjust the energy level transmitted by the moving member 21 to the crank rotating mechanism 4.

As shown in fig. 3, the third embodiment of the present invention is different from the first embodiment in that the control of the pneumatic mechanism is an electronic control, which is provided with an electric controller and a solenoid valve, and the intake valve or the exhaust valve is opened and closed respectively according to a preset program, which should be understood by those skilled in the art.

The utility model discloses can use in the place that needs power such as industry, agriculture, transportation, house life, it can directly drive the drive load function.

The utility model discloses a theory of operation:

according to Archimedes' law, objects immersed in a liquid are subjected to an upward buoyancy equal to the weight of the liquid displaced by the object, which can be expressed by the formula:

f = ρ gv, where F-buoyancy, ρ -density of the liquid, g-acceleration of gravity, v-volume of the displaced liquid.

The buoyancy acting on the object is caused by gravity, and the magnitude of the buoyancy is known. When immersed in a liquid, the body will necessarily occupy a volume of liquid, which, if an incompressible liquid, will be displaced around the body along its surfaces. The weight of the displaced liquid is the buoyancy. The utility model discloses just utilized object buoyancy, converted the buoyancy kinetic energy of object into mechanical energy, further driven machine's operation. Moving member 21 is immersed in a container containing a liquid, for example water as the medium of this liquid, which has a density of 997.1kg/m3 and a specific gravity of 1.00 g/cm3, and moving member 21 is subjected to an upward buoyant force, as known from archimedes' law, of magnitude F = ρ gv. When the volume of the moving member 21 is changed to change the weight of the moving member to discharge water, the position of the moving member 21 in the water is changed. Two phenomena thus occur:

1. the weight of the moving part 21 is less than that of the object for discharging the boiled water, the floating F is less than Ga,

2. the weight of the moving part 21 is larger than that of the object discharging water, the object sinks by F > Ga,

the two phenomena reflect the movement of the moving member 21 in water, and in order to realize the two phenomena, the sealed gas storage bag 2 is filled with gas (the sealed gas storage bag 2 is made of an elastic, telescopic and sealable material), the volume of the sealed gas storage bag 2 needs to be increased and expanded, water is discharged to the periphery along the surface of the sealed gas storage bag 2 under the action of the increased surface pressure of the sealed gas storage bag 2, and when the volume weight of the discharged water is greater than F, the moving member 21 moves upwards (floats upwards) integrally. When the gas filled in the sealed gas storage bag 2 is exhausted, the sealed gas storage bag 2 is contracted, the water returns to the original space correspondingly, and after the sealed gas storage bag 2 exhausts the gas, when the weight of the moving member 21 is less than F, the moving member 21 moves (sinks) downwards integrally. It will thus be appreciated that in this way the moveable member 21 can be moved through the water, as can a submarine or a submersible vehicle. The utility model discloses a connecting rod 5 is connected moving member 21 and a crank rotary mechanism 4, utilizes reciprocating of moving member 21 and uses directional supporting mechanism to remove to promote crank rotary mechanism 4 and be rotary motion as the fulcrum, just can become rotary motion with the up-and-down motion conversion of moving member 21. And the rotation moment generated by the crank rotating mechanism 4 can drive the load to operate. If the moving member 21 is continuously moved, the crank rotating mechanism 4 can continuously rotate, so that the buoyancy collecting, storing and converting processes are realized.

In addition, it should be further described that when the moving member 21 moves upward from the starting point to the ending point by a certain distance, the moving member 21 does work, in the above process, the moving member 21 generates energy, and the moving member 21 transmits the energy to the crank rotating mechanism 4 through the connecting rod 5, that is, the buoyancy potential energy is converted into kinetic energy. When the moving member 21 moves downward from the end point to the start point, the moving member 21 also generates energy due to the gravity moving the moving member 21 by a certain distance in the above process, and the moving member 21 also does work and converts the gravitational potential energy into kinetic energy through the connecting rod 5. In general, during the upward movement of the moving member 21, energy is generated by buoyancy potential energy, which drives the crank-rotation mechanism 4 to rotate from the starting point to the top dead center, and during the downward movement of the moving member 21, energy is generated by gravity potential energy, which drives the crank-rotation mechanism 4 to rotate from the top dead center to the starting point. Therefore, the energy obtained by the crank rotating mechanism 4 is a resultant force, which is composed of buoyancy potential energy, gravitational potential energy, energy consumed by friction, energy consumed by resistance of liquid to the moving member 21, and the like. When the crank rotating mechanism 4 is connected with a rotating object, the energy collected on the crank rotating mechanism 4 is released to the air under the condition of no load and is lost in the form of heat energy, and when the crank rotating mechanism 4 is connected with the rotating object, the energy is released to the rotating object and is converted into other forms of energy for the load to use.

Buoyancy exists in nature in a potential energy mode, when the environment where liquid is located is changed and certain conditions are met, the potential energy is converted into kinetic energy, and the energy of the buoyancy is excited in such a way to be used by human beings.

After many tests, two actual cases are shown:

(1) the matching example with the middle and low pressure centrifugal ventilator is as follows:

taking a 4-72-11 NO 2.8 fan as an example, the technical parameters are as follows: the rotating speed is 2900 rpm, the air quantity 1330-. The utility model discloses drive the fan, fill the work of exhausting with 1.5 liter sealed gas storage air pocket, actual air pump consumed power only uses 300 watts, compares with original supporting motor 1.5 kilowatts and has reduced 1.2 kilowatts.

(2) Example of matching with a centrifugal water pump:

taking a 40B17 centrifugal water pump as an example, the technical parameters are as follows: the rotating speed is 2900 rpm, the flow is 11 cubic meters per hour, the lift is 17.4 meters, the shaft power is 0.923 kilowatt, and the selected motor is 1.5 kilowatt. The utility model discloses drive the water pump, fill the work of exhausting with 3 liters of sealed gas storage bag, actual air pump consumed power is 500 watts, compares with original supporting motor 1.5 kilowatts and has reduced 1 kilowatt.

To sum up, the utility model discloses a sealed gas storage air pocket 2 to in the moving member 21 fills the exhaust operation and can easily control reciprocating of moving member 21, and the mechanical energy who will reciprocate effectively is changed into the rotation and can exports, and it can realize collection, storage, application and the conversion of gas buoyancy, provides new power mode for the life production, and not only easy operation, dependable performance moreover. The number of the sealed air storage air bags 2 is increased or decreased, the air buoyancy of the moving piece 21 can be controlled, the rotation speed of the crank rotating mechanism 4 is controlled by adjusting the alternate speed of air inflation and air exhaust, and a user can adaptively adjust the air buoyancy of the moving piece 21 according to different requirements of loads, so that the adaptability is improved, and the application range is enlarged.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The air buoyancy driven power device is characterized in that: the device comprises at least one moving piece (21), a pneumatic mechanism and a crank rotating mechanism (4), wherein the moving piece (21) is used for moving up and down in a liquid medium, the pneumatic mechanism is used for controlling the moving piece (21) to move up and down in a circulating manner, the crank rotating mechanism (4) is in transmission connection with the moving piece (21), and the up and down circulating movement of the moving piece (21) drives the crank rotating mechanism (4) to rotate;

the moving piece (21) comprises a shell (1), a sealed gas storage bag (2) used for storing gas and a gravity block (3) used for driving the moving piece (21) to integrally move downwards in a liquid medium, the sealed gas storage bag (2) is placed and fixed in an inner cavity of the shell (1) and communicated with a pneumatic mechanism, the sealed gas storage bag (2) expands under the inflation action of the pneumatic mechanism and drives the shell (1) and the gravity block (3) to move upwards in the liquid medium, the sealed gas storage bag (2) contracts under the exhaust action of the pneumatic mechanism and moves downwards together with the shell (1) under the gravity action of the gravity block (3), and the upward and downward cyclic movement of the moving piece (21) is realized through alternate change of inflation and exhaust.

2. The gas-buoyancy driven power plant according to claim 1, characterized in that: the shell (1) is provided with a plurality of drain holes (101), and the liquid medium can enter and exit the inner cavity of the shell (1) through the drain holes (101).

3. The gas-buoyancy driven power plant according to claim 1, characterized in that: the moving piece (21) is connected with the crank rotating mechanism (4) through a connecting rod (5), the tail end of the connecting rod (5) is rotatably connected to the top end of the shell (1), and the front end of the connecting rod (5) is rotatably connected to the crank rotating mechanism (4).

4. The gas-buoyancy driven power plant according to claim 3, characterized in that: one end of the connecting rod (5) is rotatably connected to the position of the crank rotating mechanism (4) close to the edge.

5. The gas-buoyancy driven power plant according to claim 1, characterized in that: the pneumatic mechanism comprises a gas input pipeline (19) and a gas output pipeline (20), and the sealed gas storage bag (2) is respectively connected with the gas input pipeline (19) and the gas output pipeline (20).

6. The gas-buoyancy driven power plant according to any one of claims 1 to 5, wherein: the sealed gas storage bags (2) are arranged at one or more than two, and the sealed gas storage bags (2) are mutually connected in parallel to the pneumatic mechanism and are mutually independent.

7. The gas-buoyancy driven power plant according to claim 6, characterized in that: the device is characterized by further comprising a directional supporting mechanism for guiding the moving piece (21) to move, wherein the directional supporting mechanism comprises a support (15) and a guide rail (16), the guide rail (16) is vertically arranged on the support (15), and the moving piece (21) moves up and down along the guide rail (16).