CN115256903A

CN115256903A - Knurling forming device that filler was used

Info

Publication number: CN115256903A
Application number: CN202210713749.5A
Authority: CN
Inventors: 高建伟; 王晨; 周杰; 褚世宇; 侯晓悦
Original assignee: Cncec Cangzhou Cooling Technology Co ltd
Current assignee: China Chemical Civil Engineering Co ltd; China Chemical Equipment Technology Group Co ltd; China National Chemical Equipment Technology Co ltd; Cncec Cangzhou Cooling Technology Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-01
Anticipated expiration: 2042-06-22
Also published as: CN115256903B

Abstract

The invention relates to the technical field of embossing forming, in particular to an embossing forming device for filler, which is convenient for cleaning plates to be processed in advance, is convenient for automatic feeding, does not need manual feeding, not only ensures the health of operators, reduces labor force, but also is convenient for better forming of products, greatly improves the qualification rate of the products, and has higher practicability.

Description

Knurling forming device that filler was used

Technical Field

The invention relates to the technical field of embossing forming, in particular to an embossing forming device for filler.

Background

As is known, the filler is the most important part of the cooling tower, the filler plays a role in increasing the heat dissipation capacity, prolonging the retention time of cooling water, increasing the heat exchange area and increasing the heat exchange capacity, and the appearance of the plastic filler is a great innovation in the development of the cooling tower.

Present knurling forming device that packs and use, though be convenient for carry out extrusion to plastic plate, the knurling forming device that most packs and use all needs the workman to carry out manual material loading to corrugated plastic slab, and be not convenient for clean in advance to corrugated plastic slab, the shaping of product not only is not convenient for to the dirty corrugated plastic slab in surface, more serious influence the production quality of product, consequently, need one kind be convenient for clean corrugated plastic slab in advance and the knurling forming device that packs and use of being convenient for automatic feeding in advance, need not artifical material loading, not only guarantee operating personnel's healthy, reduce the labour, and be convenient for the better shaping of product, the qualification rate of product is greatly improved, the practicality is higher.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the embossing and forming device for the filler, which is convenient for cleaning a corrugated plastic plate in advance and automatically feeding the filler, does not need manual feeding, not only ensures the health of operators and reduces labor force, but also is convenient for better forming of products, greatly improves the qualification rate of the products, and has higher practicability.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an knurling forming device that filler was used, includes the forming device body, the bottom fixedly connected with bottom plate of forming device body, two flitch of going up of bottom plate top left part fixedly connected with are located the front end left part of the last flitch of front side and are installed motor one, the output of motor one runs through to this rear side and the fixedly connected with pivot one of going up the flitch, two right part rotation between the flitch is connected with pivot two, the transmission is connected with conveyer belt one between pivot two and the pivot one, is provided with stop gear on two flitch, two clearance boards of the top right part fixedly connected with of bottom plate, and three motor two are installed to the front end that is located the clearance board of front end, and is three the output of motor two all runs through to the rear end and the fixedly connected with pivot three that correspond the clearance board, and is three pivot three all is connected with pivot four through the transmission of a plurality of conveyer belts two, and is located two pivot four rotations on right sides and connects between two clearance boards, and is located the left pivot four rotations right part of connecting between two last flitch, and is provided with stoving mechanism and wiper mechanism in the inside of two clearance boards, the right part fixedly connected with two clearance board, the right part of bottom plate fixedly connected with supply with two supply with mechanism.

Preferably, stop gear includes two electric putter one, two electric putter one is installed respectively on two last flitchs, and the output of two electric putter one all runs through to two middle and fixedly connected with limiting plate one of last flitch, two the bottom of limiting plate one all laminates mutually with conveyer belt one fixedly connected with spacing on the flitch, two stoppers of fixedly connected with on the spacing, two the right-hand member of stopper can be dismantled through two bolts respectively and be connected with limiting plate two, and a plurality of screw holes that correspond with the bolt are all seted up to the right-hand member of two stoppers.

Furthermore, the drying mechanism comprises a drying box, the drying box is fixedly connected to the top end of the bottom plate, the middle of the drying box is located between the middle conveying belt II and the left conveying belt II, a first through hole is formed in the middle of the drying box, two electric resistance boxes are arranged inside the drying box, a plurality of first fans are mounted on the two electric resistance boxes, and the first fans on the two electric resistance boxes correspond to the upper surface of the second conveying belt.

Further, the cleaning mechanism comprises a cleaning box, the cleaning box is fixedly connected to the top of the bottom plate, the middle of the cleaning box is located between a middle conveying belt II and a conveying belt II on the right side, a through hole II is formed in the middle of the cleaning box, a water tank is fixedly connected to the middle of the top of the cleaning box, a water pump is installed on the front portion of the top of the cleaning box, a first water pipe is communicated with the lower portion of the water pump, the output end of the water pump is communicated with a three-way water pipe, the lower portion of the three-way water pipe penetrates through the right portion inside the cleaning box and is communicated with two conversion blocks, the two conversion blocks are communicated with two second water pipes, the two water pipes are corresponding to the upper surface of the conveying belt II, the four water pipes are communicated with a plurality of water spray heads, a second fan is installed on the rear portion of the top of the cleaning box, the output end of the first fan is communicated with a first air outlet pipe, the bottom end of the first air outlet pipe penetrates through the left portion inside the cleaning box and is communicated with two air outlet pipes, the air outlet pipe II is corresponding to the upper surface of the conveying belt II, and is communicated with a plurality of air outlet nozzles.

As a further scheme of this scheme, supply mechanism includes the supply tank, supply tank fixed connection is between two supply plates, and the board that remains to be processed is placed in the inside of supply tank, and the left end lower part of supply tank has seted up and has supplied with the through-hole, and the bottom of supply tank has seted up and has promoted the through-hole, and the right-hand member fixedly connected with push rod plate of supply tank, electric putter two is installed to the right-hand member of push rod plate, the output of electric putter two runs through to the left end and the fixedly connected with of push rod plate and supplies with the frame, the inside of supplying with through-hole to supply tank is passed on the top of supplying with the frame.

As a further scheme of this scheme, the top of bottom plate lateral sliding connection has the sewage box, the left end of sewage box runs through to the inside of clean case, the right-hand member fixedly connected with handle of sewage box.

On the basis of the scheme, the top end of the water tank is communicated with a water inlet pipe, and a water pipe cap is arranged on the water inlet pipe.

On the basis of the scheme, the two conversion blocks, the rear ends of the four water pipes II and the air outlet pipe I are fixedly connected with the inside of the cleaning box through the stabilizing blocks.

In addition to the above, a rubber layer is disposed on the top end of the supply frame.

On the basis of the scheme, the right end of the water tank is communicated with a detection pipe.

(III) advantageous effects

Compared with the prior art, the invention provides an embossing forming device for filler, which has the following beneficial effects:

according to the embossing forming device, the cleaned plate to be processed is conveniently and automatically conveyed into the forming device body through the cooperation of the forming device body, the bottom plate, the feeding plate, the first motor, the first rotating shaft, the second rotating shaft, the first conveying belt and the limiting mechanism, the automatic cleaning and drying of the plate to be processed are conveniently realized through the cooperation of the third motor, the third rotating shaft, the second rotating shaft, the cleaning plate, the drying mechanism and the cleaning mechanism, the production quality of products is improved, the automatic feeding of the plate to be processed is conveniently realized through the cooperation of the feeding plate and the feeding mechanism, the labor force of workers is greatly reduced, therefore, the embossing forming device for the filler is convenient for cleaning the plate to be processed in advance, the automatic feeding is convenient, the manual feeding is not needed, the health of operators is guaranteed, the labor force is reduced, the product is convenient to be formed better, the qualified rate of the products is greatly improved, and the practicability is high.

Drawings

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

FIG. 2 is a schematic view of a three-dimensional structure of the invention with a limiting mechanism, a drying mechanism, a cleaning mechanism and the like;

FIG. 3 is a schematic view of a three-dimensional structure of the invention with a limiting mechanism;

FIG. 4 is a schematic view of a partially sectioned perspective structure of a drying mechanism, a cleaning mechanism, etc. in cooperation with one another according to the present invention;

FIG. 5 is a schematic perspective view of the feed mechanism of the present invention;

fig. 6 is a schematic view of the enlarged structure of a portion a in fig. 4 according to the present invention.

In the figure: 1. a molding device body; 2. a base plate; 3. feeding plates; 4. a first motor; 5. a first rotating shaft; 6. a second rotating shaft; 7. a first conveying belt; 8. cleaning the plate; 9. a second motor; 10. a rotating shaft III; 11. a second conveying belt; 12. a rotating shaft IV; 13. a supply plate; 14. a first electric push rod; 15. a first limiting plate; 16. a limiting frame; 17. a limiting block; 18. a second limiting plate; 19. drying box; 20. an electric resistance box; 21. a first fan; 22. cleaning the box; 23. a water tank; 24. a water pump; 25. a three-way water pipe; 26. a conversion block; 27. a second water pipe; 28. a second fan; 29. a first air outlet pipe; 30. a second air outlet pipe; 31. a supply tank; 32. a plate to be processed; 33. a push rod plate; 34. a second electric push rod; 35. a supply rack; 36. a sewage box; 37. a water inlet pipe; 38. a stabilizing block; 39. and (6) detecting the tube.

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.

Examples

Referring to fig. 1-6, an embossing and forming device for packing comprises a forming device body 1, a bottom plate 2 is fixedly connected to the bottom end of the forming device body 1, two feeding plates 3 are fixedly connected to the left portion of the top end of the bottom plate 2, a first motor 4 is installed at the left portion of the front end of each feeding plate 3, an output end of the first motor 4 penetrates through the rear side of each feeding plate 3 and is fixedly connected with a first rotating shaft 5, a second rotating shaft 6 is rotatably connected to the right portion between the two feeding plates 3, a first conveying belt 7 is connected between the second rotating shaft 6 and the first rotating shaft 5, a limiting mechanism is arranged on each feeding plate 3 and comprises two first electric push rods 14, the two first electric push rods 14 are respectively installed on the two feeding plates 3, output ends of the two first electric push rods 14 penetrate through the middles of the two feeding plates 3 and are fixedly connected with a first limiting plate 15, the bottom ends of the two first limiting plates 15 are attached to the first conveying belt 7, the two feeding plates 3 are fixedly connected with a limiting frame 16, the limiting frame 16 is fixedly connected with two limiting blocks 17, the right ends of the two limiting blocks 17 are detachably connected with a second limiting plate 18 through two bolts respectively, the right ends of the two limiting blocks 17 are provided with a plurality of threaded holes corresponding to the bolts, the position of the plate 32 to be processed is convenient to limit, the number of layers of the plate 32 to be processed is convenient to adjust according to the thickness of the plate to be produced, the right part of the top end of the bottom plate 2 is fixedly connected with two cleaning plates 8, the front end of the cleaning plate 8 positioned at the front end is provided with three motors 9, the output ends of the three motors 9 penetrate through the rear ends of the corresponding cleaning plates 8 and are fixedly connected with third rotating shafts 10, the three rotating shafts 10 are all in transmission connection with fourth rotating shafts 12 through a plurality of second conveying belts 11, and the two rotating shafts 12 positioned at the right side are rotatably connected between the two cleaning plates 8, the rotating shaft four 12 positioned on the left side is rotatably connected to the right part between the two feeding plates 3, and a drying mechanism and a cleaning mechanism are arranged inside the two cleaning plates 8.

Still further, it should be further noted that the drying mechanism includes a drying box 19, the drying box 19 is fixedly connected to the top end of the bottom plate 2, a first through hole is formed between the middle second conveying belt 11 and the left second conveying belt 11 of the drying box 19, two electric resistance boxes 20 are arranged inside the drying box 19, a plurality of first fans 21 are respectively installed on the two electric resistance boxes 20, the first fans 21 on the two electric resistance boxes 20 correspond to the upper surfaces of the second conveying belts 11, so as to dry the water stains on the upper and lower surfaces of the processed plate 32 after being cleaned, the cleaning mechanism includes a cleaning box 22, the cleaning box 22 is fixedly connected to the top end of the bottom plate 2, a second through hole is formed between the middle second conveying belt 11 and the right second conveying belt 11 of the cleaning box 22, a water tank 23 is fixedly connected to the middle portion of the top end of the cleaning box 22, and a detection pipe 39 is communicated with the right end of the water tank 23, the water level inside the water tank 23 is convenient to monitor, the top end of the water tank 23 is communicated with a water inlet pipe 37, a water pipe cap is arranged on the water inlet pipe 37, water can be conveniently added into the water tank 23, a water pump 24 is installed at the front portion of the top end of the cleaning tank 22, a first water pipe is communicated between the input end of the water pump 24 and the lower portion of the water tank 23, an output end of the water pump 24 is communicated with a three-way water pipe 25, the lower portion of the three-way water pipe 25 penetrates through the right portion inside the cleaning tank 22 and is communicated with two conversion blocks 26, two second water pipes 27 are communicated with the two conversion blocks 26, every two of the four second water pipes 27 correspond to the upper surface of the conveying belt two 11, a plurality of water spray heads are communicated with the four second water pipes 27, a second fan 28 is installed at the rear portion of the top end of the cleaning tank 22, the output end of the fan second 28 is communicated with a first air outlet pipe 29, and two air outlet pipes 30 are communicated with the left portion inside the cleaning tank 22 at the bottom end of the air outlet pipe 29, two play tuber pipes 30 all correspond with the upper surface of conveyer belt two 11, and the intercommunication has a plurality of tuyere on two play tuber pipes 30, is convenient for treat the upper and lower surface of handling board 32 clean, improves the production quality of product, and two supply plate 13 of the top right part fixedly connected with of bottom plate 2 are provided with feed mechanism between two supply plate 13.

It should be further described that the supply mechanism includes a supply box 31, the supply box 31 is fixedly connected between two supply plates 13, a plate 32 to be processed is placed inside the supply box 31, a supply through hole is formed at the lower part of the left end of the supply box 31, a push through hole is formed at the bottom end of the supply box 31, a push rod plate 33 is fixedly connected to the right end of the supply box 31, a second electric push rod 34 is installed at the right end of the push rod plate 33, the output end of the second electric push rod 34 penetrates through the left end of the push rod plate 33 and is fixedly connected with a supply frame 35, a rubber layer is arranged at the top end of the supply frame 35, so that when the supply frame 35 pushes the plate 32 to be processed, the plate 32 to be processed on the upper layer of the supply frame 35 is protected, the supply frame 35 is prevented from damaging the plate 32 to be processed, and the top end of the supply frame 35 penetrates through the supply through hole to the inside of the supply box 31, supply with the thickness that highly is greater than treating processing board 32 of through-hole, be less than the double-deck thickness of treating processing board 32, supply with the inside highly be less than the thickness of treating processing board 32 of frame 35 position in supply box 31, be convenient for treat processing board 32 and promote, be convenient for treat processing board 32 and carry out the automatic feeding of one, the top lateral sliding connection of bottom plate 2 has sewage box 36, the left end of sewage box 36 runs through to the inside of clean case 22, the right-hand member fixedly connected with handle of sewage box 36, be convenient for accomodate the sewage that wiper mechanism flowed down when clean, centralized processing, two conversion blocks 26, fixedly connected with stabilizing block 38 between the rear end of four water pipe two 27 and the inside of play tuber pipe 29 all and clean case 22, be convenient for stabilize conversion block 26, the position of water pipe two 27 and play tuber pipe one 29.

The motor one 4, the motor two 9, the electric push rod one 14, the electric push rod two 34, the fan one 21, the fan two 28, the electric resistance box 20 and the water pump 24 in the embodiment are conventional devices which are purchased in the market and known to persons skilled in the art, and models can be selected or customized according to actual needs, and in the patent, the motors are only used, and the structures and functions of the motors are not improved.

To sum up, when the embossing forming device for the filler is used for processing a plate to be processed 32, according to the thickness of a product to be processed and formed, the distance between the bottom end of the second limit plate 18 and the upper surface of the first conveyor belt 7 is adjusted through the bolts and the threaded holes on the second limit plate 18, the number of the multilayer plates to be processed 32 to be passed is adjusted, the first electric push rod 14 is started, the output end of the first electric push rod 14 drives the first limit plate 15 to move, the distance between the two first limit plates 15 is slightly larger than the width of the plate to be processed 32, the plate to be processed 32 is placed in the supply box 31, the second electric push rod 34 is started, the output end of the second electric push rod 34 drives the supply frame 35 to move, the supply frame 35 pushes the plate to be processed 32 at the lowest layer to move, the plate to be processed 32 is pushed out from the inside of the supply through hole by the supply frame 35, the second motor 9 is started, and the output end of the second motor 9 drives the third rotating shaft 10 to rotate, the rotation of the third rotating shaft 10 drives the fourth rotating shaft 12 to rotate through the second conveying belt 11, the rotation of the second conveying belt 11 drives the plate 32 to be processed to be conveyed, when the plate 32 to be processed passes through the cleaning box, the water pump 24 is started, water in the water tank 23 passes through the first water pipe, the water pump 24, the three-way water pipe 25, the conversion block 26 and the second water pipe 27, is sprayed out from the inside of the water spray head, the upper surface and the lower surface of the plate 32 to be processed are washed, the second fan 28 is started, wind blown out through the second fan 28 passes through the first air outlet pipe 29 and the second air outlet pipe 30, is blown out from the inside of the air outlet nozzle, excessive moisture attached to the plate 32 to be processed is dried, when the plate 32 to be processed after being cleaned is conveyed to the inside of the drying box 19 through the second conveying belt 11, the first electric heating resistance box 20 and the first fan 21 are started, and the temperature in the first fan 21 is used for sucking and blowing and drying the moisture remaining on the upper surface and the lower surface of the plate 32 to be processed, the shaping of the product of being convenient for, treat after the clearance and process board 32 and carry on conveyer belt 7 through two 11 conveyer belts, pile up on conveyer belt 7, the height that highly is greater than conveyer belt 7 of conveyer belt two 11, the board of processing on the conveyer belt 7 piles up after the take-up height, a starter motor 4, the output of motor 4 drives pivot 5 and rotates pivot 5's rotation and drive pivot two 6 rotations through conveyer belt 7, the rotation of conveyer belt 7 drives the multilayer that will process through the restriction of two 18 limiting plates and treats that processing board 32 carries, process through forming device body 1 can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An embossing forming device for fillers, comprising a forming device body (1), characterized in that the bottom end of the forming device body (1) is fixedly connected with a base plate (2), and the top end of the base plate (2) The left part is fixedly connected with two feeding boards (3), and the front left part of the feeding board (3) on the front side is equipped with a motor one (4), and the output end of the motor one (4) runs through the upper The rear side of the material plate (3) is fixedly connected with a rotating shaft one (5), and the right part between the two described upper material plates (3) is rotatably connected with a rotating shaft two (6), and the rotating shaft two (6) is connected to the A conveyor belt (7) is connected between the rotating shaft one (5), a limit mechanism is arranged on the two feeding plates (3), and two cleaning plates (8) are fixedly connected to the top right of the bottom plate (2). The front end of the cleaning plate (8) positioned at the front end is equipped with three motors two (9), and the output ends of the three motors two (9) all pass through to the rear end of the corresponding cleaning plate (8) and are fixedly connected with the rotating shaft three ( 10), the three rotating shafts three (10) are connected to the rotating shaft four (12) through a plurality of conveyer belts two (11), and the two rotating shafts four (12) on the right side are connected to the two cleaning plates ( 8), the rotating shaft four (12) on the left side is connected to the right part between the two feeding plates (3), and the inside of the two cleaning plates (8) is provided with a drying mechanism and a cleaning mechanism, so Two supply plates (13) are fixedly connected to the top right part of the bottom plate (2), and a supply mechanism is arranged between the two supply plates (13).

2. A kind of embossing forming device for filling according to claim 1, characterized in that, said limit mechanism comprises two electric push rods one (14), two said electric push rods one (14) They are respectively installed on the two feeding plates (3), and the output ends of the two electric push rods one (14) all penetrate to the middle of the two feeding plates (3) and are fixedly connected with the limiting plate one (15). The bottom ends of each of the limiting plates one (15) fit together with the conveyor belt one (7), and the two upper feeding plates (3) are fixedly connected with the limiting frame (16), and the limiting frame (16) is fixedly connected with two spacer blocks (17), and the right ends of the two spacer blocks (17) are respectively detachably connected to the spacer plate two (18) by two bolts, and the two spacer blocks ( 17) The right end all offers a plurality of threaded holes corresponding to bolts.

3. The embossing forming device for packing according to claim 2, characterized in that, the drying mechanism comprises a drying box (19), and the drying box (19) is fixedly connected to the bottom plate (2 ), the middle part of the drying box (19) is located between the conveyor belt two (11) in the middle and the left conveyor belt two (11) and has a through hole one, and the inside of the drying box (19) Two electric thermal resistance boxes (20) are provided, and a plurality of fan ones (21) are all installed on the two electric thermal resistance boxes (20), and the fan ones (21) on the two electric thermal resistance boxes (20) are all connected with The upper surface of conveyor belt two (11) is corresponding.

4. The embossing forming device for packing according to claim 3, characterized in that, the cleaning mechanism includes a cleaning box (22), and the cleaning box (22) is fixedly connected to the top of the bottom plate (2) , the middle part of the cleaning box (22) is located between the conveyor belt two (11) in the middle and the conveyor belt two (11) on the right side and has a through hole two, and the top middle part of the cleaning box (22) is fixedly connected with a water tank (23 ), the top front of the cleaning tank (22) is equipped with a water pump (24), the input end of the water pump (24) is communicated with the bottom of the water tank (23), and the water pipe one is connected, and the output end of the water pump (24) A three-way water pipe (25) is communicated, and the lower part of the three-way water pipe (25) penetrates to the right part inside the cleaning box (22) and communicates with two conversion blocks (26). Two water pipes (27) are all communicated with each other, and the four water pipes two (27) are corresponding to the upper surface of the conveyor belt two (11) in pairs, and the four water pipes two (27) are all connected to each other. Two water spray heads, fan two (28) are installed on the top rear portion of cleaning box (22), and the output end of described fan two (28) is communicated with air outlet pipe one (29), and described air outlet pipe one (29) ) penetrates to the left part inside the cleaning box (22) and is connected with two outlet pipes two (30), and the two outlet pipes two (30) are connected to the upper surface of the conveyor belt two (11) Correspondingly, the two air outlet pipes 2 (30) are connected with a plurality of air outlet nozzles.

5. The embossing forming device for packing according to claim 4, characterized in that, the supply mechanism comprises a supply box (31), and the supply box (31) is fixedly connected to two supply plates (13 ), the inside of the supply box (31) is placed with a plate to be processed (32), the lower left end of the supply box (31) is provided with a supply through hole, and the bottom end of the supply box (31) is provided with a push through hole, and the supply box ( The right end of 31) is fixedly connected with a push rod plate (33), and the right end of the push rod plate (33) is equipped with an electric push rod two (34), and the output end of the electric push rod two (34) penetrates to the push rod The left end of the plate (33) is fixedly connected with a supply frame (35), and the top end of the supply frame (35) passes through the supply through hole to the inside of the supply box (31).

6. The embossing forming device for packing according to claim 5, characterized in that, the top of the bottom plate (2) is slidably connected with a sewage box (36) laterally, and the left end of the sewage box (36) Through to the inside of the cleaning box (22), the right end of the sewage box (36) is fixedly connected with a handle.

7. The embossing forming device for packing according to claim 6, characterized in that, the top of the water tank (23) is connected with a water inlet pipe (37), and the water inlet pipe (37) is provided with a water pipe cap.

8. A kind of embossing forming device for packing according to claim 7, characterized in that, the rear ends of the two transition blocks (26), the four water pipes two (27) and the air outlet pipe one (29) ) are all fixedly connected with a stabilizing block (38) between the inside of the cleaning box (22).

9. The embossing forming device for packing according to claim 8, characterized in that a rubber layer is provided on the top end of the supply frame (35).

10. An embossing forming device for filling according to claim 9, characterized in that a detection tube (39) is communicated with the right end of the water tank (23).