CN114828558A

CN114828558A - Cement kiln high-temperature gas analyzer probe control cabinet capable of preventing high temperature

Info

Publication number: CN114828558A
Application number: CN202210353254.6A
Authority: CN
Inventors: 宫红霞; 王承亮; 孟凡华
Original assignee: Bingkai Optoelectronic Technology Shanghai Co ltd
Current assignee: Bingkai Optoelectronic Technology Shanghai Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-29

Abstract

The invention discloses a cement kiln high-temperature gas analyzer probe control cabinet capable of preventing high temperature, which comprises a cabinet body vertically placed, wherein the outer side of the lower end of the cabinet body is provided with an air inlet, the inner side of the cabinet body is provided with a fixed plate, the inner side of the lower end of the cabinet body is fixedly provided with a motor, the output end of the motor is fixedly provided with a turntable, and the outer side of the turntable is fixedly provided with fan blades, and the cement kiln high-temperature gas analyzer probe control cabinet also comprises: the filter screen is fixedly arranged on the inner side of the air inlet and is used for filtering dust; the containing bin is fixedly arranged on the inner side of the upper end of the cabinet body, and a movable plate is arranged on the inner side of the containing bin; and the sprinkling barrel is movably arranged at the lower end of the containing bin. This can prevent cement kiln high-temperature gas analysis appearance probe control cabinet of high temperature can utilize liquid cooling and air-cooling to realize high-efficient heat dissipation, avoids the internal portion high temperature of cabinet, can carry out effectual automatic fire extinguishing simultaneously, improves the safety in utilization of the cabinet body.

Description

Cement kiln high-temperature gas analyzer probe control cabinet capable of preventing high temperature

Technical Field

The invention relates to the technical field of cement processing, in particular to a probe control cabinet of a high-temperature gas analyzer of a cement kiln, which can prevent high temperature.

Background

At present, competition among cement enterprises is really cost and quality competition, the lower the production cost of the cement enterprises is, the better the quality is, the stronger the competitiveness of the enterprises is inevitably, and a lot of enterprises do not need to spend huge capital to introduce an APC (cement plant optimization control system) system to help the cement plant reduce the production cost and improve the product quality. The high-temperature gas analyzer has obvious effects on the optimized control, the economic operation and the high-efficiency energy conservation of the combustion process of the rotary cement kiln, is an energy-saving technical scheme with low investment cost, simple implementation and best effect of a sintering system of a cement plant, and needs to use a control cabinet to control a probe of the high-temperature gas analyzer in the use process of the high-temperature gas analyzer of the cement kiln, but the probe control cabinet of the high-temperature gas analyzer of the existing cement kiln still has some defects.

For example, an electrical control cabinet for cement plant equipment with publication number CN215345590U, which comprises a refrigeration element and an air exchange fan installed at the center of the inner wall of the top of the protection cover, wherein the refrigeration element generates a proper amount of cold air, which is blown into the inner part of the inner casing by the air exchange fan, the heat generated by the working of the instrument installed in the inner casing is evacuated through a plurality of heat dissipation holes formed at one side of the inner casing close to the heat dissipation net, the heat dissipation effect is good, the service life of the instrument is protected and prolonged, the inner casing is connected to the inner wall of the control cabinet body in a sliding manner, the inner casing is lifted up and down through an up-and-down reciprocating lifting system composed of a lead screw and a lifting plate, so as to facilitate the movement of the control cabinet body, when the control cabinet body moves to a designated position, the bottom installed at the bottom corner of the lifting plate moves down under the action of the lead screw and contacts with the ground, thereby positioning and fixing the control cabinet body, it also has the following disadvantages:

1. the existing probe control cabinet of the high-temperature gas analyzer of the cement kiln has a single heat dissipation mode in the use process, so that the inside of the probe control cabinet is inconvenient to carry out high-efficiency heat dissipation, the heat accumulation amount in the cabinet body is easy to accumulate, and the normal use of electrical equipment in the cabinet body is influenced;

2. the probe control cabinet of the existing cement kiln high-temperature gas analyzer is inconvenient to effectively extinguish fire on the inner side in the using process, so that the fire condition cannot be quickly controlled, and certain using defects exist.

Therefore, we propose a probe control cabinet of a high temperature gas analyzer for a cement kiln, which can prevent high temperature, so as to solve the problems mentioned above.

Disclosure of Invention

The invention aims to provide a probe control cabinet for a high-temperature gas analyzer of a cement kiln, which can prevent high temperature, and solves the problems that the probe control cabinet for the high-temperature gas analyzer of the cement kiln in the market at present is inconvenient to radiate the inner side of the probe control cabinet with high efficiency, so that heat accumulation is easy to accumulate in a cabinet body, the normal use of electric equipment in the cabinet body is influenced, the inner side of the electric equipment is inconvenient to effectively extinguish, and the fire condition cannot be quickly controlled.

In order to achieve the purpose, the invention provides the following technical scheme: a probe control cabinet of a cement kiln high-temperature gas analyzer capable of preventing high temperature comprises a cabinet body which is vertically placed, wherein an air inlet is formed in the outer side of the lower end of the cabinet body, a fixing plate is installed on the inner side of the cabinet body, a motor is fixedly installed on the inner side of the lower end of the cabinet body, a rotary table is fixedly installed at the output end of the motor, and fan blades are fixedly installed on the outer side of the rotary table;

further comprising:

the filter screen is fixedly arranged on the inner side of the air inlet and is used for filtering dust;

the containing bin is fixedly arranged on the inner side of the upper end of the cabinet body, a movable plate is arranged on the inner side of the containing bin, and the lower surface of the movable plate is connected with a rotating plate in a shaft mode;

the sprinkling barrel is movably arranged at the lower end of the containing bin, a connecting column is fixedly connected to the inner side of the sprinkling barrel, the upper end of the connecting column is connected with the inner wall of the upper end of the cabinet body in a shaft mode, and a guide groove is formed in the outer wall of the connecting column.

Preferably, the upper surface shaft of carousel is connected with the connecting rod, just the other end shaft of connecting rod is connected with the support, and the outside fixedly connected with pull rod of support, simultaneously the other end of pull rod weld in the outside of filter screen.

Through adopting above-mentioned technical scheme for when the motor drives the carousel and rotates, the carousel can pull support and pull rod through the connecting rod and carry out left and right reciprocating motion, and then realize the automatically regulated to the pull rod position.

Preferably, the filter screen is woven for the elastic metal wire and forms, just the filter screen is the arc structure setting.

Through adopting above-mentioned technical scheme for the pull rod reciprocating motion in-process can push away, draw the central point of filter screen and put, thereby change the convex surface direction of filter screen, make the filter screen can shake off its adnexed dust of outside automatically.

Preferably, the fixed plate is made of copper, and an infusion tube is embedded into the inner side of the fixed plate and is arranged in a bent manner.

Through adopting above-mentioned technical scheme, can be so that the coolant oil in the transfer line can carry out high-efficient heat transfer with the fixed plate for the heat that the inside electron device of switch board produced can be taken away to the fixed plate, thereby further improved the inside control by temperature change effect of switch board.

Preferably, the end part of the bracket is fixedly connected with an extrusion wheel, the extrusion wheel is attached to the infusion tube, and the infusion tube attached to the extrusion wheel is obliquely arranged.

By adopting the technical scheme, when the support reciprocates, the extrusion wheel at the end part can gradually extrude the infusion tube, so that the flowing and conveying of the cooling oil in the infusion tube are promoted, and the heat exchange effect of the infusion tube is ensured.

Preferably, silk is wrapped on the outer side of the extrusion wheel, the infusion tube is made of a plastic hose material, and a conductive rod is connected between the outer wall of the infusion tube and the filter screen.

Through adopting above-mentioned technical scheme for when extrusion wheel laminating transfer line surface carries out reciprocating friction, can be so that produce the charge migration between the two, and give the filter screen through the conducting rod with the charge conduction, make the filter screen can have through the charge adsorb, catch dust etc. thereby further improved the filter effect of filter screen, improved the dustproof effect of switch board.

Preferably, a hidden groove is formed in the rotating plate, a sliding block is arranged on the outer side of the shaft end of the movable plate, the sliding block and the hidden groove form a sliding structure, and an air bag is connected between the sliding block and the hidden groove.

Through adopting above-mentioned technical scheme for when the internal portion of cabinet produced the condition of a fire, the gasbag can be heated the inflation, thereby promotes the slider and slides along the camera obscura, thereby makes the rotor plate carry out autogiration.

Preferably, the surface circumference of the movable plate is equiangularly provided with first through holes, the movable plate is attached to the rotating plate, the surface of the rotating plate is provided with second through holes, the first through holes and the second through holes are correspondingly arranged, and the fire extinguishing agent is filled in the inner side of the containing bin.

Through adopting above-mentioned technical scheme for the rotor plate can rotate voluntarily when the condition of a fire takes place, thereby makes first through-hole and second through-hole coincide each other, thereby makes the fire extinguishing agent that holds in the storehouse can fall to below through first through-hole and second through-hole.

Preferably, the fly leaf with hold the storehouse and constitute sliding construction, just the fly leaf with hold and be connected with the spring between the storehouse, and the fly leaf is run through by the spliced pole, simultaneously the ball is installed in the hole inner wall embedding of fly leaf, moreover the ball constitutes sliding construction with the guide slot, simultaneously the guide slot is the heliciform structure setting, the hole of spilling has evenly been seted up to the lower surface of a section of thick bamboo of spilling.

Through adopting above-mentioned technical scheme for when holding the interior fire extinguishing agent of storehouse and reducing, the fly leaf can shift up along the inner wall that holds the storehouse under the spring force effect, thereby makes the ball slide along the camera obscura, thereby drives and spills a section of thick bamboo and rotate, and a section of thick bamboo that spills this moment can evenly throw the dropping at its inboard fire extinguishing agent and spill, thereby realizes putting out a fire to the high efficiency of cabinet internal portion.

Compared with the prior art, the invention has the beneficial effects that: the probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature can realize high-efficiency heat dissipation by utilizing liquid cooling and air cooling, avoids overhigh temperature in the cabinet body, can effectively and automatically extinguish fire, and improves the use safety of the cabinet body, and has the following specific contents;

1. the air cooling and liquid cooling integrated infusion device is provided with the rotary table and the infusion tube, the rotary table is driven to rotate by the control motor, fan blades outside the rotary table can generate wind power, the rotary table can pull the support to reciprocate through the connecting rod, the extrusion wheel can gradually extrude the infusion tube, cooling oil in the infusion tube can automatically flow, efficient heat dissipation on the interior of the cabinet body is achieved through air cooling and liquid cooling, and normal use is prevented from being influenced by heat accumulation;

2. the filter screen, the extrusion wheel and the infusion tube are arranged, when the extrusion wheel rubs the infusion tube, the extrusion wheel can generate static electricity, and meanwhile, the extrusion wheel can guide generated charges to the filter screen, so that the filter screen is attached with charges, the adsorption and filtering effects on dust are improved, and in the moving process of the pull rod, the filter screen can be pulled to shake, so that the filter screen is automatically cleaned, the blockage is avoided, and the heat dissipation effect is further improved;

3. be provided with the fly leaf, rotor plate and a section of thick bamboo that spills, when the internal portion of cabinet produced the condition of a fire, the gasbag can be heated the inflation and promote the rotor plate and rotate, thereby make first through-hole and second through-hole coincide each other, and then make the fire extinguishing agent who holds in the storehouse throw in automatically and spill a section of thick bamboo inboard, when fly leaf top fire extinguishing agent reduces, it can carry out elasticity automatically and rise, thereby it carries out autogiration to drive a section of thick bamboo that spills through the spliced pole, make a section of thick bamboo that spills can evenly spill its inboard fire extinguishing agent, thereby realize automatic fire extinguishing, and the safety in utilization is improved.

Drawings

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

FIG. 2 is a schematic view of the installation structure of the extrusion wheel and the infusion tube of the present invention;

FIG. 3 is a schematic main sectional view of a fixing plate according to the present invention;

FIG. 4 is a schematic perspective view of a filter screen according to the present invention;

FIG. 5 is a schematic view of the movable plate mounting structure of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention;

FIG. 7 is a schematic cross-sectional view of the rotating plate of the present invention;

fig. 8 is a schematic perspective view of the sprinkler of the present invention.

In the figure: 1. a cabinet body; 2. an air inlet; 3. a fixing plate; 4. a motor; 5. a turntable; 6. a fan blade; 7. a connecting rod; 8. a support; 9. a pull rod; 10. filtering with a screen; 11. an extrusion wheel; 12. a transfusion tube; 1201. a conductive rod; 13. a containing bin; 14. a movable plate; 15. a spring; 16. a first through hole; 17. a rotating plate; 18. a second through hole; 19. a slider; 20. a hidden groove; 21. an air bag; 22. a ball bearing; 23. a pouring cylinder; 24. connecting columns; 25. a guide groove; 26. and (4) pouring the holes.

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.

Referring to fig. 1-8, the present invention provides a technical solution: a probe control cabinet of a cement kiln high-temperature gas analyzer capable of preventing high temperature comprises a cabinet body 1 which is vertically placed, wherein an air inlet 2 is formed in the outer side of the lower end of the cabinet body 1, a fixing plate 3 is installed on the inner side of the cabinet body 1, a motor 4 is fixedly installed on the inner side of the lower end of the cabinet body 1, a rotary table 5 is fixedly installed at the output end of the motor 4, and fan blades 6 are fixedly installed on the outer side of the rotary table 5;

further comprising: the filter screen 10 is fixedly arranged on the inner side of the air inlet 2 and is used for filtering dust; the containing bin 13 is fixedly arranged on the inner side of the upper end of the cabinet body 1, a movable plate 14 is arranged on the inner side of the containing bin 13, and the lower surface of the movable plate 14 is in shaft connection with a rotating plate 17; the sprinkling cylinder 23 is movably arranged at the lower end of the containing bin 13, the inner side of the sprinkling cylinder 23 is fixedly connected with a connecting column 24, the upper end shaft of the connecting column 24 is connected to the inner wall of the upper end of the cabinet body 1, and the outer wall of the connecting column 24 is provided with a guide groove 25.

The upper surface shaft of carousel 5 is connected with connecting rod 7, and the other end shaft of connecting rod 7 is connected with support 8 to the outside fixedly connected with pull rod 9 of support 8, the other end of pull rod 9 welds in the outside of filter screen 10 simultaneously. The filter screen 10 is woven by elastic metal wires, and the filter screen 10 is arranged in an arc structure. The fixing plate 3 is made of copper material, and the infusion tube 12 is embedded in the inner side of the fixing plate 3, and the infusion tube 12 is arranged in a bending shape. The end part of the bracket 8 is fixedly connected with an extrusion wheel 11, the extrusion wheel 11 is jointed with an infusion tube 12, and the infusion tube 12 at the joint section of the extrusion wheel 11 is arranged in an inclined shape. Silk is wrapped outside the extrusion wheel 11, the infusion tube 12 is made of a plastic hose material, and a conductive rod 1201 is connected between the outer wall of the infusion tube 12 and the filter screen 10, as shown in fig. 1-4, when the control cabinet works, the motor 4 is started, so that the motor 4 drives the turntable 5 and the fan blades 6 to synchronously rotate, at the moment, the fan blades 6 can generate upward wind power, simultaneously, the bracket 8 and the pull rod 9 can be pulled by the connecting rod 7 in the rotating process of the turntable 5 to synchronously reciprocate left and right, at the moment, the infusion tube 12 can be extruded by the extrusion wheel 11, so that cooling oil inside the infusion tube 12 can be pushed to automatically convey, at the moment, the temperature can be reduced by matching of air cooling and liquid cooling, simultaneously, a large amount of charged particles can be generated in the mutual friction process of the extrusion wheel 11 and the infusion tube 12, so that charges can be transferred to the filter screen 10 through the conductive rod 1201, so that the filter screen 10 carries charges, thereby improving the adsorption effect of the filter screen 10 on dust and the like, and the pull rod 9 can pull the filter screen 10 to automatically shake in the reciprocating process, so that the filter screen 10 is prevented from being blocked.

The rotating plate 17 is provided with a hidden groove 20 inside, the movable plate 14 is provided with a slide block 19 at the outer side of the shaft end, the slide block 19 and the hidden groove 20 form a sliding structure, and an air bag 21 is connected between the slide block 19 and the hidden groove 20. First through holes 16 are formed in the circumferential direction of the surface of the movable plate 14 at equal angles, the movable plate 14 is attached to the rotating plate 17, second through holes 18 are formed in the surface of the rotating plate 17, the first through holes 16 and the second through holes 18 are correspondingly arranged, and fire extinguishing agents are filled in the containing bin 13. The movable plate 14 and the containing bin 13 form a sliding structure, a spring 15 is connected between the movable plate 14 and the containing bin 13, the movable plate 14 is penetrated through by a connecting column 24, meanwhile, balls 22 are embedded in the inner wall of the hole of the movable plate 14, the balls 22 and the guide groove 25 form a sliding structure, meanwhile, the guide groove 25 is arranged in a spiral structure, and the lower surface of the pouring cylinder 23 is uniformly provided with pouring holes 26, as shown in fig. 1 and fig. 5-8, when a fire condition occurs inside the cabinet body 1, the air bag 21 is heated and expanded, so that the sliding block 19 is pushed to slide along the blind groove 20, and the rotating plate 17 is pushed to automatically rotate, so that the position between the first through hole 16 and the second through hole 18 is adjusted, the two are overlapped with each other, at the moment, the fire extinguishing agent in the containing bin 13 falls into the inner side of the pouring cylinder 23, so that the bearing weight of the movable plate 14 is reduced, at the moment, the movable plate 14 automatically moves upwards under the elastic force of the spring 15, make ball 22 slide along camera obscura 20 to drive spliced pole 24 and a section of thick bamboo 23 of spilling and carry out synchronous revolution, make a section of thick bamboo 23 of spilling evenly spill the fire extinguishing agent through the hole 26 of spilling that its lower surface was evenly seted up, thereby can effectively put out a fire to cabinet body 1 inside, avoid further stretching of intensity of a fire, improved the safety in utilization.

The working principle is as follows: when using this can prevent cement kiln high temperature gas analysis appearance probe switch board of high temperature, at first, as shown in fig. 1-8, when the switch board during operation, starter motor 4, make flabellum 6 can produce ascending wind-force, simultaneously extrusion wheel 11 promotes the cooling fluid in transfer line 12 and carries out the automation, and then realize high-efficient heat dissipation, the cooling, filter screen 10 can improve the adsorption of self to the dust through electrostatic action simultaneously, and carry out automatic clearance to the dust that its outside was adsorbed at the cooling in-process, and when the cabinet body 1 inside produced the condition of a fire, a section of thick bamboo 23 that inclines can carry out the automation to the fire extinguishing agent who holds in the storehouse 13 and put in, realize automatic fire extinguishing, effectively avoid the condition of a fire to stretch, thereby accomplish a series of work.

Those not described in detail in this specification are prior art well known to those skilled in the art, and in the description of the present invention, "plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A probe control cabinet of a cement kiln high-temperature gas analyzer capable of preventing high temperature comprises a cabinet body (1) which is vertically placed, wherein an air inlet (2) is formed in the outer side of the lower end of the cabinet body (1), a fixing plate (3) is installed on the inner side of the cabinet body (1), a motor (4) is fixedly installed on the inner side of the lower end of the cabinet body (1), a rotary table (5) is fixedly installed at the output end of the motor (4), and fan blades (6) are fixedly installed on the outer side of the rotary table (5);

it is characterized by also comprising:

the filter screen (10) is fixedly arranged on the inner side of the air inlet (2) and is used for filtering dust;

the storage bin (13) is fixedly arranged on the inner side of the upper end of the cabinet body (1), a movable plate (14) is arranged on the inner side of the storage bin (13), and the lower surface of the movable plate (14) is in shaft connection with a rotating plate (17);

a section of thick bamboo of fascinating (23), the activity set up in hold storehouse (13) lower extreme, the inboard fixedly connected with spliced pole (24) of a section of thick bamboo of fascinating (23), just the upper end hub connection of spliced pole (24) in the upper end inner wall of the cabinet body (1), and guide slot (25) have been seted up to the outer wall of spliced pole (24).

2. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: the upper surface of carousel (5) hub connection has connecting rod (7), just the other end hub connection of connecting rod (7) has support (8), and the outside fixedly connected with pull rod (9) of support (8), simultaneously the other end of pull rod (9) weld in the outside of filter screen (10).

3. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: the filter screen (10) is woven for the elastic metal wire and is formed, just the filter screen (10) is the arc structure setting.

4. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: the fixing plate (3) is made of copper materials, an infusion tube (12) is embedded into the inner side of the fixing plate (3), and the infusion tube (12) is arranged in a bending mode.

5. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 2, characterized in that: the end part of the bracket (8) is fixedly connected with an extrusion wheel (11), the extrusion wheel (11) is attached to an infusion tube (12), and the infusion tube (12) at the attachment section of the extrusion wheel (11) is obliquely arranged.

6. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 5, wherein: silk is wrapped on the outer side of the extrusion wheel (11), the infusion tube (12) is made of a plastic hose, and a conductive rod (1201) is connected between the outer wall of the infusion tube (12) and the filter screen (10).

7. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: a hidden groove (20) is formed in the rotating plate (17), a sliding block (19) is arranged on the outer side of the shaft end of the movable plate (14), the sliding block (19) and the hidden groove (20) form a sliding structure, and an air bag (21) is connected between the sliding block (19) and the hidden groove (20).

8. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: first through holes (16) are formed in the circumferential direction of the surface of the movable plate (14) at equal angles, the movable plate (14) is attached to the rotating plate (17), second through holes (18) are formed in the surface of the rotating plate (17), the first through holes (16) and the second through holes (18) are correspondingly arranged, and fire extinguishing agents are filled in the inner side of the containing bin (13).

9. The probe control cabinet of the cement kiln high-temperature gas analyzer capable of preventing high temperature according to claim 1, characterized in that: fly leaf (14) with hold storehouse (13) and constitute sliding construction, just fly leaf (14) with hold between the storehouse (13) and be connected with spring (15), and fly leaf (14) are run through by spliced pole (24), simultaneously ball (22) are installed in the hole inner wall embedding of fly leaf (14), moreover ball (22) and guide slot (25) constitute sliding construction, simultaneously guide slot (25) are the heliciform structure setting, hole (26) of spilling have evenly been seted up to the lower surface of a section of thick bamboo of spilling (23).